/* tc-alpha.c - Processor-specific code for the DEC Alpha AXP CPU.
- Copyright 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+ Copyright 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
Free Software Foundation, Inc.
Contributed by Carnegie Mellon University, 1993.
Written by Alessandro Forin, based on earlier gas-1.38 target CPU files.
GAS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with GAS; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
-
-/*
- * Mach Operating System
- * Copyright (c) 1993 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie the
- * rights to redistribute these changes.
- */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
+/* Mach Operating System
+ Copyright (c) 1993 Carnegie Mellon University
+ All Rights Reserved.
+
+ Permission to use, copy, modify and distribute this software and its
+ documentation is hereby granted, provided that both the copyright
+ notice and this permission notice appear in all copies of the
+ software, derivative works or modified versions, and any portions
+ thereof, and that both notices appear in supporting documentation.
+
+ CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
+ CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+
+ Carnegie Mellon requests users of this software to return to
+
+ Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
+ School of Computer Science
+ Carnegie Mellon University
+ Pittsburgh PA 15213-3890
+
+ any improvements or extensions that they make and grant Carnegie the
+ rights to redistribute these changes. */
#include "as.h"
#include "subsegs.h"
#ifdef OBJ_ELF
#include "elf/alpha.h"
-#include "dwarf2dbg.h"
#endif
-#include <ctype.h>
+#ifdef OBJ_EVAX
+#include "vms.h"
+#endif
+
+#include "dwarf2dbg.h"
+#include "dw2gencfi.h"
+#include "safe-ctype.h"
\f
-/* Local types */
+/* Local types. */
-#define TOKENIZE_ERROR -1
-#define TOKENIZE_ERROR_REPORT -2
+#define TOKENIZE_ERROR -1
+#define TOKENIZE_ERROR_REPORT -2
+#define MAX_INSN_FIXUPS 2
+#define MAX_INSN_ARGS 5
-#define MAX_INSN_FIXUPS 2
-#define MAX_INSN_ARGS 5
+/* Used since new relocation types are introduced in this
+ file (DUMMY_RELOC_LITUSE_*) */
+typedef int extended_bfd_reloc_code_real_type;
-struct alpha_fixup {
+struct alpha_fixup
+{
expressionS exp;
- bfd_reloc_code_real_type reloc;
+ /* bfd_reloc_code_real_type reloc; */
+ extended_bfd_reloc_code_real_type reloc;
+#ifdef OBJ_EVAX
+ symbolS *xtrasym, *procsym;
+#endif
};
-struct alpha_insn {
+struct alpha_insn
+{
unsigned insn;
int nfixups;
struct alpha_fixup fixups[MAX_INSN_FIXUPS];
long sequence;
};
-enum alpha_macro_arg {
- MACRO_EOA = 1,
- MACRO_IR,
- MACRO_PIR,
- MACRO_OPIR,
- MACRO_CPIR,
- MACRO_FPR,
- MACRO_EXP,
-};
+enum alpha_macro_arg
+ {
+ MACRO_EOA = 1,
+ MACRO_IR,
+ MACRO_PIR,
+ MACRO_OPIR,
+ MACRO_CPIR,
+ MACRO_FPR,
+ MACRO_EXP
+ };
-struct alpha_macro {
+struct alpha_macro
+{
const char *name;
- void (*emit) PARAMS ((const expressionS *, int, const PTR));
- const PTR arg;
+ void (*emit) (const expressionS *, int, const void *);
+ const void * arg;
enum alpha_macro_arg argsets[16];
};
/* Extra expression types. */
-#define O_pregister O_md1 /* O_register, in parentheses */
-#define O_cpregister O_md2 /* + a leading comma */
-
-/* Note, the alpha_reloc_op table below depends on the ordering
- of O_literal .. O_gpre16. */
-#define O_literal O_md3 /* !literal relocation */
-#define O_lituse_addr O_md4 /* !lituse_addr relocation */
-#define O_lituse_base O_md5 /* !lituse_base relocation */
-#define O_lituse_bytoff O_md6 /* !lituse_bytoff relocation */
-#define O_lituse_jsr O_md7 /* !lituse_jsr relocation */
-#define O_gpdisp O_md8 /* !gpdisp relocation */
-#define O_gprelhigh O_md9 /* !gprelhigh relocation */
-#define O_gprellow O_md10 /* !gprellow relocation */
-#define O_gprel O_md11 /* !gprel relocation */
+#define O_pregister O_md1 /* O_register, in parentheses. */
+#define O_cpregister O_md2 /* + a leading comma. */
+
+/* The alpha_reloc_op table below depends on the ordering of these. */
+#define O_literal O_md3 /* !literal relocation. */
+#define O_lituse_addr O_md4 /* !lituse_addr relocation. */
+#define O_lituse_base O_md5 /* !lituse_base relocation. */
+#define O_lituse_bytoff O_md6 /* !lituse_bytoff relocation. */
+#define O_lituse_jsr O_md7 /* !lituse_jsr relocation. */
+#define O_lituse_tlsgd O_md8 /* !lituse_tlsgd relocation. */
+#define O_lituse_tlsldm O_md9 /* !lituse_tlsldm relocation. */
+#define O_lituse_jsrdirect O_md10 /* !lituse_jsrdirect relocation. */
+#define O_gpdisp O_md11 /* !gpdisp relocation. */
+#define O_gprelhigh O_md12 /* !gprelhigh relocation. */
+#define O_gprellow O_md13 /* !gprellow relocation. */
+#define O_gprel O_md14 /* !gprel relocation. */
+#define O_samegp O_md15 /* !samegp relocation. */
+#define O_tlsgd O_md16 /* !tlsgd relocation. */
+#define O_tlsldm O_md17 /* !tlsldm relocation. */
+#define O_gotdtprel O_md18 /* !gotdtprel relocation. */
+#define O_dtprelhi O_md19 /* !dtprelhi relocation. */
+#define O_dtprello O_md20 /* !dtprello relocation. */
+#define O_dtprel O_md21 /* !dtprel relocation. */
+#define O_gottprel O_md22 /* !gottprel relocation. */
+#define O_tprelhi O_md23 /* !tprelhi relocation. */
+#define O_tprello O_md24 /* !tprello relocation. */
+#define O_tprel O_md25 /* !tprel relocation. */
#define DUMMY_RELOC_LITUSE_ADDR (BFD_RELOC_UNUSED + 1)
#define DUMMY_RELOC_LITUSE_BASE (BFD_RELOC_UNUSED + 2)
#define DUMMY_RELOC_LITUSE_BYTOFF (BFD_RELOC_UNUSED + 3)
#define DUMMY_RELOC_LITUSE_JSR (BFD_RELOC_UNUSED + 4)
+#define DUMMY_RELOC_LITUSE_TLSGD (BFD_RELOC_UNUSED + 5)
+#define DUMMY_RELOC_LITUSE_TLSLDM (BFD_RELOC_UNUSED + 6)
+#define DUMMY_RELOC_LITUSE_JSRDIRECT (BFD_RELOC_UNUSED + 7)
-#define LITUSE_ADDR 0
-#define LITUSE_BASE 1
-#define LITUSE_BYTOFF 2
-#define LITUSE_JSR 3
-
-#define USER_RELOC_P(R) ((R) >= O_literal && (R) <= O_gprel)
+#define USER_RELOC_P(R) ((R) >= O_literal && (R) <= O_tprel)
-/* Macros for extracting the type and number of encoded register tokens */
+/* Macros for extracting the type and number of encoded register tokens. */
#define is_ir_num(x) (((x) & 32) == 0)
#define is_fpr_num(x) (((x) & 32) != 0)
#define regno(x) ((x) & 31)
-/* Something odd inherited from the old assembler */
+/* Something odd inherited from the old assembler. */
#define note_gpreg(R) (alpha_gprmask |= (1 << (R)))
#define note_fpreg(R) (alpha_fprmask |= (1 << (R)))
^ 0x80000000) - 0x80000000)
#endif
-/* Macros to build tokens */
+/* Macros to build tokens. */
#define set_tok_reg(t, r) (memset (&(t), 0, sizeof (t)), \
(t).X_op = O_register, \
(t).X_op = O_constant, \
(t).X_add_number = (n))
\f
-/* Prototypes for all local functions */
-
-static struct alpha_reloc_tag *get_alpha_reloc_tag PARAMS ((long));
-static void alpha_adjust_symtab_relocs PARAMS ((bfd *, asection *, PTR));
-
-static int tokenize_arguments PARAMS ((char *, expressionS *, int));
-static const struct alpha_opcode *find_opcode_match
- PARAMS ((const struct alpha_opcode *, const expressionS *, int *, int *));
-static const struct alpha_macro *find_macro_match
- PARAMS ((const struct alpha_macro *, const expressionS *, int *));
-static unsigned insert_operand
- PARAMS ((unsigned, const struct alpha_operand *, offsetT, char *, unsigned));
-static void assemble_insn
- PARAMS ((const struct alpha_opcode *, const expressionS *, int,
- struct alpha_insn *, bfd_reloc_code_real_type));
-static void emit_insn PARAMS ((struct alpha_insn *));
-static void assemble_tokens_to_insn
- PARAMS ((const char *, const expressionS *, int, struct alpha_insn *));
-static void assemble_tokens
- PARAMS ((const char *, const expressionS *, int, int));
-
-static long load_expression
- PARAMS ((int, const expressionS *, int *, expressionS *));
-
-static void emit_ldgp PARAMS ((const expressionS *, int, const PTR));
-static void emit_division PARAMS ((const expressionS *, int, const PTR));
-static void emit_lda PARAMS ((const expressionS *, int, const PTR));
-static void emit_ldah PARAMS ((const expressionS *, int, const PTR));
-static void emit_ir_load PARAMS ((const expressionS *, int, const PTR));
-static void emit_loadstore PARAMS ((const expressionS *, int, const PTR));
-static void emit_jsrjmp PARAMS ((const expressionS *, int, const PTR));
-static void emit_ldX PARAMS ((const expressionS *, int, const PTR));
-static void emit_ldXu PARAMS ((const expressionS *, int, const PTR));
-static void emit_uldX PARAMS ((const expressionS *, int, const PTR));
-static void emit_uldXu PARAMS ((const expressionS *, int, const PTR));
-static void emit_ldil PARAMS ((const expressionS *, int, const PTR));
-static void emit_stX PARAMS ((const expressionS *, int, const PTR));
-static void emit_ustX PARAMS ((const expressionS *, int, const PTR));
-static void emit_sextX PARAMS ((const expressionS *, int, const PTR));
-static void emit_retjcr PARAMS ((const expressionS *, int, const PTR));
-
-static void s_alpha_text PARAMS ((int));
-static void s_alpha_data PARAMS ((int));
-#ifndef OBJ_ELF
-static void s_alpha_comm PARAMS ((int));
-static void s_alpha_rdata PARAMS ((int));
-#endif
-#ifdef OBJ_ECOFF
-static void s_alpha_sdata PARAMS ((int));
-#endif
-#ifdef OBJ_ELF
-static void s_alpha_section PARAMS ((int));
-static void s_alpha_ent PARAMS ((int));
-static void s_alpha_end PARAMS ((int));
-static void s_alpha_mask PARAMS ((int));
-static void s_alpha_frame PARAMS ((int));
-static void s_alpha_prologue PARAMS ((int));
-static void s_alpha_file PARAMS ((int));
-static void s_alpha_loc PARAMS ((int));
-static void s_alpha_stab PARAMS ((int));
-static void s_alpha_coff_wrapper PARAMS ((int));
-#endif
-#ifdef OBJ_EVAX
-static void s_alpha_section PARAMS ((int));
-#endif
-static void s_alpha_gprel32 PARAMS ((int));
-static void s_alpha_float_cons PARAMS ((int));
-static void s_alpha_proc PARAMS ((int));
-static void s_alpha_set PARAMS ((int));
-static void s_alpha_base PARAMS ((int));
-static void s_alpha_align PARAMS ((int));
-static void s_alpha_stringer PARAMS ((int));
-static void s_alpha_space PARAMS ((int));
-static void s_alpha_ucons PARAMS ((int));
-static void s_alpha_arch PARAMS ((int));
-
-static void create_literal_section PARAMS ((const char *, segT *, symbolS **));
-#ifndef OBJ_ELF
-static void select_gp_value PARAMS ((void));
-#endif
-static void alpha_align PARAMS ((int, char *, symbolS *, int));
-\f
/* Generic assembler global variables which must be defined by all
targets. */
/* Characters which mean that a number is a floating point constant,
as in 0d1.0. */
-#if 0
-const char FLT_CHARS[] = "dD";
-#else
/* XXX: Do all of these really get used on the alpha?? */
char FLT_CHARS[] = "rRsSfFdDxXpP";
-#endif
#ifdef OBJ_EVAX
const char *md_shortopts = "Fm:g+1h:HG:";
const char *md_shortopts = "Fm:gG:";
#endif
-struct option md_longopts[] = {
+struct option md_longopts[] =
+ {
#define OPTION_32ADDR (OPTION_MD_BASE)
- { "32addr", no_argument, NULL, OPTION_32ADDR },
+ { "32addr", no_argument, NULL, OPTION_32ADDR },
#define OPTION_RELAX (OPTION_32ADDR + 1)
- { "relax", no_argument, NULL, OPTION_RELAX },
+ { "relax", no_argument, NULL, OPTION_RELAX },
#ifdef OBJ_ELF
#define OPTION_MDEBUG (OPTION_RELAX + 1)
#define OPTION_NO_MDEBUG (OPTION_MDEBUG + 1)
- { "mdebug", no_argument, NULL, OPTION_MDEBUG },
- { "no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG },
+ { "mdebug", no_argument, NULL, OPTION_MDEBUG },
+ { "no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG },
#endif
- { NULL, no_argument, NULL, 0 }
-};
+#ifdef OBJ_EVAX
+#define OPTION_REPLACE (OPTION_RELAX + 1)
+#define OPTION_NOREPLACE (OPTION_REPLACE+1)
+ { "replace", no_argument, NULL, OPTION_REPLACE },
+ { "noreplace", no_argument, NULL, OPTION_NOREPLACE },
+#endif
+ { NULL, no_argument, NULL, 0 }
+ };
size_t md_longopts_size = sizeof (md_longopts);
\f
#undef AXP_REG_GP
#define AXP_REG_GP AXP_REG_PV
+
+static struct hash_control *alpha_evax_proc_hash;
+
#endif /* OBJ_EVAX */
-/* The cpu for which we are generating code */
+/* The cpu for which we are generating code. */
static unsigned alpha_target = AXP_OPCODE_BASE;
static const char *alpha_target_name = "<all>";
-/* The hash table of instruction opcodes */
+/* The hash table of instruction opcodes. */
static struct hash_control *alpha_opcode_hash;
-/* The hash table of macro opcodes */
+/* The hash table of macro opcodes. */
static struct hash_control *alpha_macro_hash;
#ifdef OBJ_ECOFF
-/* The $gp relocation symbol */
+/* The $gp relocation symbol. */
static symbolS *alpha_gp_symbol;
/* XXX: what is this, and why is it exported? */
valueT alpha_gp_value;
#endif
-/* The current $gp register */
+/* The current $gp register. */
static int alpha_gp_register = AXP_REG_GP;
-/* A table of the register symbols */
+/* A table of the register symbols. */
static symbolS *alpha_register_table[64];
-/* Constant sections, or sections of constants */
+/* Constant sections, or sections of constants. */
#ifdef OBJ_ECOFF
static segT alpha_lita_section;
-static segT alpha_lit4_section;
#endif
#ifdef OBJ_EVAX
-static segT alpha_link_section;
-static segT alpha_ctors_section;
-static segT alpha_dtors_section;
+segT alpha_link_section;
#endif
+#ifndef OBJ_EVAX
static segT alpha_lit8_section;
+#endif
/* Symbols referring to said sections. */
#ifdef OBJ_ECOFF
static symbolS *alpha_lita_symbol;
-static symbolS *alpha_lit4_symbol;
#endif
#ifdef OBJ_EVAX
static symbolS *alpha_link_symbol;
-static symbolS *alpha_ctors_symbol;
-static symbolS *alpha_dtors_symbol;
#endif
+#ifndef OBJ_EVAX
static symbolS *alpha_lit8_symbol;
+#endif
-/* Literal for .litX+0x8000 within .lita */
+/* Literal for .litX+0x8000 within .lita. */
#ifdef OBJ_ECOFF
-static offsetT alpha_lit4_literal;
static offsetT alpha_lit8_literal;
#endif
-#ifdef OBJ_ELF
-/* The active .ent symbol. */
-static symbolS *alpha_cur_ent_sym;
-#endif
-
-/* Is the assembler not allowed to use $at? */
+/* Is the assembler not allowed to use $at? */
static int alpha_noat_on = 0;
-/* Are macros enabled? */
+/* Are macros enabled? */
static int alpha_macros_on = 1;
-/* Are floats disabled? */
+/* Are floats disabled? */
static int alpha_nofloats_on = 0;
-/* Are addresses 32 bit? */
+/* Are addresses 32 bit? */
static int alpha_addr32_on = 0;
/* Symbol labelling the current insn. When the Alpha gas sees
and the section happens to not be on an eight byte boundary, it
will align both the symbol and the .quad to an eight byte boundary. */
static symbolS *alpha_insn_label;
+#if defined(OBJ_ELF) || defined (OBJ_EVAX)
+static symbolS *alpha_prologue_label;
+#endif
+
+#ifdef OBJ_EVAX
+/* Symbol associate with the current jsr instruction. */
+static symbolS *alpha_linkage_symbol;
+#endif
/* Whether we should automatically align data generation pseudo-ops.
.align 0 will turn this off. */
int alpha_flag_mdebug = -1;
#endif
+#ifdef OBJ_EVAX
+/* Whether to perform the VMS procedure call optimization. */
+int alpha_flag_replace = 1;
+#endif
+
/* Don't fully resolve relocations, allowing code movement in the linker. */
static int alpha_flag_relax;
#ifdef OBJ_EVAX
/* Collect information about current procedure here. */
-static struct {
- symbolS *symbol; /* proc pdesc symbol */
+struct alpha_evax_procs
+{
+ symbolS *symbol; /* Proc pdesc symbol. */
int pdsckind;
- int framereg; /* register for frame pointer */
- int framesize; /* size of frame */
+ int framereg; /* Register for frame pointer. */
+ int framesize; /* Size of frame. */
int rsa_offset;
int ra_save;
int fp_save;
long fmask;
int type;
int prologue;
-} alpha_evax_proc;
+ symbolS *handler;
+ int handler_data;
+};
+
+struct alpha_linkage_fixups *alpha_linkage_fixup_root;
+static struct alpha_linkage_fixups *alpha_linkage_fixup_tail;
+
+static struct alpha_evax_procs *alpha_evax_proc;
static int alpha_flag_hash_long_names = 0; /* -+ */
static int alpha_flag_show_after_trunc = 0; /* -H */
/* If the -+ switch is given, then a hash is appended to any name that is
- * longer than 64 characters, else longer symbol names are truncated.
- */
+ longer than 64 characters, else longer symbol names are truncated. */
#endif
\f
#define DEF(NAME, RELOC, REQ, ALLOW) \
{ #NAME, sizeof(#NAME)-1, O_##NAME, RELOC, REQ, ALLOW}
-static const struct alpha_reloc_op_tag {
- const char *name; /* string to lookup */
- size_t length; /* size of the string */
- operatorT op; /* which operator to use */
- bfd_reloc_code_real_type reloc; /* relocation before frob */
- unsigned int require_seq : 1; /* require a sequence number */
- unsigned int allow_seq : 1; /* allow a sequence number */
-} alpha_reloc_op[] = {
- DEF(literal, BFD_RELOC_ALPHA_ELF_LITERAL, 0, 1),
- DEF(lituse_addr, DUMMY_RELOC_LITUSE_ADDR, 1, 1),
- DEF(lituse_base, DUMMY_RELOC_LITUSE_BASE, 1, 1),
- DEF(lituse_bytoff, DUMMY_RELOC_LITUSE_BYTOFF, 1, 1),
- DEF(lituse_jsr, DUMMY_RELOC_LITUSE_JSR, 1, 1),
- DEF(gpdisp, BFD_RELOC_ALPHA_GPDISP, 1, 1),
- DEF(gprelhigh, BFD_RELOC_ALPHA_GPREL_HI16, 0, 0),
- DEF(gprellow, BFD_RELOC_ALPHA_GPREL_LO16, 0, 0),
- DEF(gprel, BFD_RELOC_GPREL16, 0, 0)
+static const struct alpha_reloc_op_tag
+{
+ const char *name; /* String to lookup. */
+ size_t length; /* Size of the string. */
+ operatorT op; /* Which operator to use. */
+ extended_bfd_reloc_code_real_type reloc;
+ unsigned int require_seq : 1; /* Require a sequence number. */
+ unsigned int allow_seq : 1; /* Allow a sequence number. */
+}
+alpha_reloc_op[] =
+{
+ DEF (literal, BFD_RELOC_ALPHA_ELF_LITERAL, 0, 1),
+ DEF (lituse_addr, DUMMY_RELOC_LITUSE_ADDR, 1, 1),
+ DEF (lituse_base, DUMMY_RELOC_LITUSE_BASE, 1, 1),
+ DEF (lituse_bytoff, DUMMY_RELOC_LITUSE_BYTOFF, 1, 1),
+ DEF (lituse_jsr, DUMMY_RELOC_LITUSE_JSR, 1, 1),
+ DEF (lituse_tlsgd, DUMMY_RELOC_LITUSE_TLSGD, 1, 1),
+ DEF (lituse_tlsldm, DUMMY_RELOC_LITUSE_TLSLDM, 1, 1),
+ DEF (lituse_jsrdirect, DUMMY_RELOC_LITUSE_JSRDIRECT, 1, 1),
+ DEF (gpdisp, BFD_RELOC_ALPHA_GPDISP, 1, 1),
+ DEF (gprelhigh, BFD_RELOC_ALPHA_GPREL_HI16, 0, 0),
+ DEF (gprellow, BFD_RELOC_ALPHA_GPREL_LO16, 0, 0),
+ DEF (gprel, BFD_RELOC_GPREL16, 0, 0),
+ DEF (samegp, BFD_RELOC_ALPHA_BRSGP, 0, 0),
+ DEF (tlsgd, BFD_RELOC_ALPHA_TLSGD, 0, 1),
+ DEF (tlsldm, BFD_RELOC_ALPHA_TLSLDM, 0, 1),
+ DEF (gotdtprel, BFD_RELOC_ALPHA_GOTDTPREL16, 0, 0),
+ DEF (dtprelhi, BFD_RELOC_ALPHA_DTPREL_HI16, 0, 0),
+ DEF (dtprello, BFD_RELOC_ALPHA_DTPREL_LO16, 0, 0),
+ DEF (dtprel, BFD_RELOC_ALPHA_DTPREL16, 0, 0),
+ DEF (gottprel, BFD_RELOC_ALPHA_GOTTPREL16, 0, 0),
+ DEF (tprelhi, BFD_RELOC_ALPHA_TPREL_HI16, 0, 0),
+ DEF (tprello, BFD_RELOC_ALPHA_TPREL_LO16, 0, 0),
+ DEF (tprel, BFD_RELOC_ALPHA_TPREL16, 0, 0),
};
#undef DEF
= sizeof (alpha_reloc_op) / sizeof (*alpha_reloc_op);
#endif /* RELOC_OP_P */
-/* Maximum # digits needed to hold the largest sequence # */
+/* Maximum # digits needed to hold the largest sequence #. */
#define ALPHA_RELOC_DIGITS 25
-/* Structure to hold explict sequence information. */
+/* Structure to hold explicit sequence information. */
struct alpha_reloc_tag
{
- fixS *slaves; /* head of linked list of !literals */
- segT segment; /* segment relocs are in or undefined_section*/
- long sequence; /* sequence # */
- unsigned n_master; /* # of literals */
- unsigned n_slaves; /* # of lituses */
- char multi_section_p; /* True if more than one section was used */
- char string[1]; /* printable form of sequence to hash with */
+ fixS *master; /* The literal reloc. */
+#ifdef OBJ_EVAX
+ struct symbol *sym;
+ struct symbol *psym;
+#endif
+ fixS *slaves; /* Head of linked list of lituses. */
+ segT segment; /* Segment relocs are in or undefined_section. */
+ long sequence; /* Sequence #. */
+ unsigned n_master; /* # of literals. */
+ unsigned n_slaves; /* # of lituses. */
+ unsigned saw_tlsgd : 1; /* True if ... */
+ unsigned saw_tlsldm : 1;
+ unsigned saw_lu_tlsgd : 1;
+ unsigned saw_lu_tlsldm : 1;
+ unsigned multi_section_p : 1; /* True if more than one section was used. */
+ char string[1]; /* Printable form of sequence to hash with. */
};
-/* Hash table to link up literals with the appropriate lituse */
+/* Hash table to link up literals with the appropriate lituse. */
static struct hash_control *alpha_literal_hash;
/* Sequence numbers for internal use by macros. */
\f
/* A table of CPU names and opcode sets. */
-static const struct cpu_type {
+static const struct cpu_type
+{
const char *name;
unsigned flags;
-} cpu_types[] = {
+}
+cpu_types[] =
+{
/* Ad hoc convention: cpu number gets palcode, process code doesn't.
This supports usage under DU 4.0b that does ".arch ev4", and
usage in MILO that does -m21064. Probably something more
|AXP_OPCODE_MAX) },
{ "21264", (AXP_OPCODE_BASE|AXP_OPCODE_EV6|AXP_OPCODE_BWX
|AXP_OPCODE_MAX|AXP_OPCODE_CIX) },
+ { "21264a", (AXP_OPCODE_BASE|AXP_OPCODE_EV6|AXP_OPCODE_BWX
+ |AXP_OPCODE_MAX|AXP_OPCODE_CIX) },
+ { "21264b", (AXP_OPCODE_BASE|AXP_OPCODE_EV6|AXP_OPCODE_BWX
+ |AXP_OPCODE_MAX|AXP_OPCODE_CIX) },
{ "ev4", AXP_OPCODE_BASE },
{ "ev45", AXP_OPCODE_BASE },
{ "ev56", AXP_OPCODE_BASE|AXP_OPCODE_BWX },
{ "pca56", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX },
{ "ev6", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX|AXP_OPCODE_CIX },
+ { "ev67", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX|AXP_OPCODE_CIX },
+ { "ev68", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX|AXP_OPCODE_CIX },
{ "all", AXP_OPCODE_BASE },
{ 0, 0 }
};
-/* The macro table */
-
-static const struct alpha_macro alpha_macros[] = {
-/* Load/Store macros */
- { "lda", emit_lda, NULL,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldah", emit_ldah, NULL,
- { MACRO_IR, MACRO_EXP, MACRO_EOA } },
+/* Some instruction sets indexed by lg(size). */
+static const char * const sextX_op[] = { "sextb", "sextw", "sextl", NULL };
+static const char * const insXl_op[] = { "insbl", "inswl", "insll", "insql" };
+static const char * const insXh_op[] = { NULL, "inswh", "inslh", "insqh" };
+static const char * const extXl_op[] = { "extbl", "extwl", "extll", "extql" };
+static const char * const extXh_op[] = { NULL, "extwh", "extlh", "extqh" };
+static const char * const mskXl_op[] = { "mskbl", "mskwl", "mskll", "mskql" };
+static const char * const mskXh_op[] = { NULL, "mskwh", "msklh", "mskqh" };
+static const char * const stX_op[] = { "stb", "stw", "stl", "stq" };
+static const char * const ldXu_op[] = { "ldbu", "ldwu", NULL, NULL };
- { "ldl", emit_ir_load, "ldl",
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldl_l", emit_ir_load, "ldl_l",
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldq", emit_ir_load, "ldq",
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldq_l", emit_ir_load, "ldq_l",
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldq_u", emit_ir_load, "ldq_u",
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldf", emit_loadstore, "ldf",
- { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldg", emit_loadstore, "ldg",
- { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "lds", emit_loadstore, "lds",
- { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldt", emit_loadstore, "ldt",
- { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+static void assemble_insn (const struct alpha_opcode *, const expressionS *, int, struct alpha_insn *, extended_bfd_reloc_code_real_type);
+static void emit_insn (struct alpha_insn *);
+static void assemble_tokens (const char *, const expressionS *, int, int);
+#ifdef OBJ_EVAX
+static char *s_alpha_section_name (void);
+static symbolS *add_to_link_pool (symbolS *, symbolS *, offsetT);
+#endif
+\f
+static struct alpha_reloc_tag *
+get_alpha_reloc_tag (long sequence)
+{
+ char buffer[ALPHA_RELOC_DIGITS];
+ struct alpha_reloc_tag *info;
- { "ldb", emit_ldX, (PTR) 0,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldbu", emit_ldXu, (PTR) 0,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldw", emit_ldX, (PTR) 1,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ldwu", emit_ldXu, (PTR) 1,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ sprintf (buffer, "!%ld", sequence);
- { "uldw", emit_uldX, (PTR) 1,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "uldwu", emit_uldXu, (PTR) 1,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "uldl", emit_uldX, (PTR) 2,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "uldlu", emit_uldXu, (PTR) 2,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "uldq", emit_uldXu, (PTR) 3,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ info = (struct alpha_reloc_tag *) hash_find (alpha_literal_hash, buffer);
+ if (! info)
+ {
+ size_t len = strlen (buffer);
+ const char *errmsg;
- { "ldgp", emit_ldgp, NULL,
- { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA } },
+ info = (struct alpha_reloc_tag *)
+ xcalloc (sizeof (struct alpha_reloc_tag) + len, 1);
- { "ldi", emit_lda, NULL,
- { MACRO_IR, MACRO_EXP, MACRO_EOA } },
- { "ldil", emit_ldil, NULL,
- { MACRO_IR, MACRO_EXP, MACRO_EOA } },
- { "ldiq", emit_lda, NULL,
- { MACRO_IR, MACRO_EXP, MACRO_EOA } },
-#if 0
- { "ldif" emit_ldiq, NULL,
- { MACRO_FPR, MACRO_EXP, MACRO_EOA } },
- { "ldid" emit_ldiq, NULL,
- { MACRO_FPR, MACRO_EXP, MACRO_EOA } },
- { "ldig" emit_ldiq, NULL,
- { MACRO_FPR, MACRO_EXP, MACRO_EOA } },
- { "ldis" emit_ldiq, NULL,
- { MACRO_FPR, MACRO_EXP, MACRO_EOA } },
- { "ldit" emit_ldiq, NULL,
- { MACRO_FPR, MACRO_EXP, MACRO_EOA } },
+ info->segment = now_seg;
+ info->sequence = sequence;
+ strcpy (info->string, buffer);
+ errmsg = hash_insert (alpha_literal_hash, info->string, (void *) info);
+ if (errmsg)
+ as_fatal ("%s", errmsg);
+#ifdef OBJ_EVAX
+ info->sym = 0;
+ info->psym = 0;
#endif
+ }
- { "stl", emit_loadstore, "stl",
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "stl_c", emit_loadstore, "stl_c",
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "stq", emit_loadstore, "stq",
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "stq_c", emit_loadstore, "stq_c",
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "stq_u", emit_loadstore, "stq_u",
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "stf", emit_loadstore, "stf",
- { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "stg", emit_loadstore, "stg",
- { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "sts", emit_loadstore, "sts",
- { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "stt", emit_loadstore, "stt",
- { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ return info;
+}
- { "stb", emit_stX, (PTR) 0,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "stw", emit_stX, (PTR) 1,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ustw", emit_ustX, (PTR) 1,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ustl", emit_ustX, (PTR) 2,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- { "ustq", emit_ustX, (PTR) 3,
- { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+#ifndef OBJ_EVAX
+
+static void
+alpha_adjust_relocs (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec,
+ void * ptr ATTRIBUTE_UNUSED)
+{
+ segment_info_type *seginfo = seg_info (sec);
+ fixS **prevP;
+ fixS *fixp;
+ fixS *next;
+ fixS *slave;
+
+ /* If seginfo is NULL, we did not create this section; don't do
+ anything with it. By using a pointer to a pointer, we can update
+ the links in place. */
+ if (seginfo == NULL)
+ return;
+
+ /* If there are no relocations, skip the section. */
+ if (! seginfo->fix_root)
+ return;
+
+ /* First rebuild the fixup chain without the explicit lituse and
+ gpdisp_lo16 relocs. */
+ prevP = &seginfo->fix_root;
+ for (fixp = seginfo->fix_root; fixp; fixp = next)
+ {
+ next = fixp->fx_next;
+ fixp->fx_next = (fixS *) 0;
-/* Arithmetic macros */
-#if 0
- { "absl" emit_absl, 1, { IR } },
- { "absl" emit_absl, 2, { IR, IR } },
- { "absl" emit_absl, 2, { EXP, IR } },
- { "absq" emit_absq, 1, { IR } },
- { "absq" emit_absq, 2, { IR, IR } },
- { "absq" emit_absq, 2, { EXP, IR } },
+ switch (fixp->fx_r_type)
+ {
+ case BFD_RELOC_ALPHA_LITUSE:
+ if (fixp->tc_fix_data.info->n_master == 0)
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("No !literal!%ld was found"),
+ fixp->tc_fix_data.info->sequence);
+#ifdef RELOC_OP_P
+ if (fixp->fx_offset == LITUSE_ALPHA_TLSGD)
+ {
+ if (! fixp->tc_fix_data.info->saw_tlsgd)
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("No !tlsgd!%ld was found"),
+ fixp->tc_fix_data.info->sequence);
+ }
+ else if (fixp->fx_offset == LITUSE_ALPHA_TLSLDM)
+ {
+ if (! fixp->tc_fix_data.info->saw_tlsldm)
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("No !tlsldm!%ld was found"),
+ fixp->tc_fix_data.info->sequence);
+ }
#endif
+ break;
- { "sextb", emit_sextX, (PTR) 0,
- { MACRO_IR, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_EOA,
- /* MACRO_EXP, MACRO_IR, MACRO_EOA */ } },
- { "sextw", emit_sextX, (PTR) 1,
- { MACRO_IR, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_EOA,
- /* MACRO_EXP, MACRO_IR, MACRO_EOA */ } },
+ case BFD_RELOC_ALPHA_GPDISP_LO16:
+ if (fixp->tc_fix_data.info->n_master == 0)
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("No ldah !gpdisp!%ld was found"),
+ fixp->tc_fix_data.info->sequence);
+ break;
- { "divl", emit_division, "__divl",
- { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_IR, MACRO_EOA,
- /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
- { "divlu", emit_division, "__divlu",
- { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_IR, MACRO_EOA,
- /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
- { "divq", emit_division, "__divq",
- { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_IR, MACRO_EOA,
- /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
- { "divqu", emit_division, "__divqu",
- { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_IR, MACRO_EOA,
- /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
- { "reml", emit_division, "__reml",
- { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_IR, MACRO_EOA,
- /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
- { "remlu", emit_division, "__remlu",
- { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_IR, MACRO_EOA,
- /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
- { "remq", emit_division, "__remq",
- { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_IR, MACRO_EOA,
- /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
- { "remqu", emit_division, "__remqu",
- { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_IR, MACRO_EOA,
- /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
- MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
+ case BFD_RELOC_ALPHA_ELF_LITERAL:
+ if (fixp->tc_fix_data.info
+ && (fixp->tc_fix_data.info->saw_tlsgd
+ || fixp->tc_fix_data.info->saw_tlsldm))
+ break;
+ /* FALLTHRU */
- { "jsr", emit_jsrjmp, "jsr",
- { MACRO_PIR, MACRO_EXP, MACRO_EOA,
- MACRO_PIR, MACRO_EOA,
- MACRO_IR, MACRO_EXP, MACRO_EOA,
- MACRO_EXP, MACRO_EOA } },
- { "jmp", emit_jsrjmp, "jmp",
- { MACRO_PIR, MACRO_EXP, MACRO_EOA,
- MACRO_PIR, MACRO_EOA,
- MACRO_IR, MACRO_EXP, MACRO_EOA,
- MACRO_EXP, MACRO_EOA } },
- { "ret", emit_retjcr, "ret",
- { MACRO_IR, MACRO_EXP, MACRO_EOA,
- MACRO_IR, MACRO_EOA,
- MACRO_PIR, MACRO_EXP, MACRO_EOA,
- MACRO_PIR, MACRO_EOA,
- MACRO_EXP, MACRO_EOA,
- MACRO_EOA } },
- { "jcr", emit_retjcr, "jcr",
- { MACRO_IR, MACRO_EXP, MACRO_EOA,
- MACRO_IR, MACRO_EOA,
- MACRO_PIR, MACRO_EXP, MACRO_EOA,
- MACRO_PIR, MACRO_EOA,
- MACRO_EXP, MACRO_EOA,
- MACRO_EOA } },
- { "jsr_coroutine", emit_retjcr, "jcr",
- { MACRO_IR, MACRO_EXP, MACRO_EOA,
- MACRO_IR, MACRO_EOA,
- MACRO_PIR, MACRO_EXP, MACRO_EOA,
- MACRO_PIR, MACRO_EOA,
- MACRO_EXP, MACRO_EOA,
- MACRO_EOA } },
-};
-
-static const unsigned int alpha_num_macros
- = sizeof (alpha_macros) / sizeof (*alpha_macros);
-\f
-/* Public interface functions */
+ default:
+ *prevP = fixp;
+ prevP = &fixp->fx_next;
+ break;
+ }
+ }
-/* This function is called once, at assembler startup time. It sets
- up all the tables, etc. that the MD part of the assembler will
- need, that can be determined before arguments are parsed. */
+ /* Go back and re-chain dependent relocations. They are currently
+ linked through the next_reloc field in reverse order, so as we
+ go through the next_reloc chain, we effectively reverse the chain
+ once again.
-void
-md_begin ()
-{
- unsigned int i;
+ Except if there is more than one !literal for a given sequence
+ number. In that case, the programmer and/or compiler is not sure
+ how control flows from literal to lituse, and we can't be sure to
+ get the relaxation correct.
- /* Verify that X_op field is wide enough. */
- {
- expressionS e;
- e.X_op = O_max;
- assert (e.X_op == O_max);
- }
+ ??? Well, actually we could, if there are enough lituses such that
+ we can make each literal have at least one of each lituse type
+ present. Not implemented.
- /* Create the opcode hash table */
+ Also suppress the optimization if the !literals/!lituses are spread
+ in different segments. This can happen with "intersting" uses of
+ inline assembly; examples are present in the Linux kernel semaphores. */
- alpha_opcode_hash = hash_new ();
- for (i = 0; i < alpha_num_opcodes;)
+ for (fixp = seginfo->fix_root; fixp; fixp = next)
{
- const char *name, *retval, *slash;
+ next = fixp->fx_next;
+ switch (fixp->fx_r_type)
+ {
+ case BFD_RELOC_ALPHA_TLSGD:
+ case BFD_RELOC_ALPHA_TLSLDM:
+ if (!fixp->tc_fix_data.info)
+ break;
+ if (fixp->tc_fix_data.info->n_master == 0)
+ break;
+ else if (fixp->tc_fix_data.info->n_master > 1)
+ {
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("too many !literal!%ld for %s"),
+ fixp->tc_fix_data.info->sequence,
+ (fixp->fx_r_type == BFD_RELOC_ALPHA_TLSGD
+ ? "!tlsgd" : "!tlsldm"));
+ break;
+ }
- name = alpha_opcodes[i].name;
- retval = hash_insert (alpha_opcode_hash, name, (PTR) &alpha_opcodes[i]);
- if (retval)
- as_fatal (_("internal error: can't hash opcode `%s': %s"),
- name, retval);
+ fixp->tc_fix_data.info->master->fx_next = fixp->fx_next;
+ fixp->fx_next = fixp->tc_fix_data.info->master;
+ fixp = fixp->fx_next;
+ /* Fall through. */
- /* Some opcodes include modifiers of various sorts with a "/mod"
- syntax, like the architecture manual suggests. However, for
- use with gcc at least, we also need access to those same opcodes
- without the "/". */
+ case BFD_RELOC_ALPHA_ELF_LITERAL:
+ if (fixp->tc_fix_data.info
+ && fixp->tc_fix_data.info->n_master == 1
+ && ! fixp->tc_fix_data.info->multi_section_p)
+ {
+ for (slave = fixp->tc_fix_data.info->slaves;
+ slave != (fixS *) 0;
+ slave = slave->tc_fix_data.next_reloc)
+ {
+ slave->fx_next = fixp->fx_next;
+ fixp->fx_next = slave;
+ }
+ }
+ break;
- if ((slash = strchr (name, '/')) != NULL)
- {
- char *p = xmalloc (strlen (name));
- memcpy (p, name, slash - name);
- strcpy (p + (slash - name), slash + 1);
+ case BFD_RELOC_ALPHA_GPDISP_HI16:
+ if (fixp->tc_fix_data.info->n_slaves == 0)
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("No lda !gpdisp!%ld was found"),
+ fixp->tc_fix_data.info->sequence);
+ else
+ {
+ slave = fixp->tc_fix_data.info->slaves;
+ slave->fx_next = next;
+ fixp->fx_next = slave;
+ }
+ break;
- (void) hash_insert (alpha_opcode_hash, p, (PTR) &alpha_opcodes[i]);
- /* Ignore failures -- the opcode table does duplicate some
- variants in different forms, like "hw_stq" and "hw_st/q". */
+ default:
+ break;
}
-
- while (++i < alpha_num_opcodes
- && (alpha_opcodes[i].name == name
- || !strcmp (alpha_opcodes[i].name, name)))
- continue;
}
+}
- /* Create the macro hash table */
+/* Before the relocations are written, reorder them, so that user
+ supplied !lituse relocations follow the appropriate !literal
+ relocations, and similarly for !gpdisp relocations. */
- alpha_macro_hash = hash_new ();
- for (i = 0; i < alpha_num_macros;)
- {
- const char *name, *retval;
+void
+alpha_before_fix (void)
+{
+ if (alpha_literal_hash)
+ bfd_map_over_sections (stdoutput, alpha_adjust_relocs, NULL);
+}
- name = alpha_macros[i].name;
- retval = hash_insert (alpha_macro_hash, name, (PTR) &alpha_macros[i]);
- if (retval)
- as_fatal (_("internal error: can't hash macro `%s': %s"),
- name, retval);
+#endif
+\f
+#ifdef DEBUG_ALPHA
+static void
+debug_exp (expressionS tok[], int ntok)
+{
+ int i;
- while (++i < alpha_num_macros
- && (alpha_macros[i].name == name
- || !strcmp (alpha_macros[i].name, name)))
- continue;
- }
+ fprintf (stderr, "debug_exp: %d tokens", ntok);
+ for (i = 0; i < ntok; i++)
+ {
+ expressionS *t = &tok[i];
+ const char *name;
- /* Construct symbols for each of the registers */
+ switch (t->X_op)
+ {
+ default: name = "unknown"; break;
+ case O_illegal: name = "O_illegal"; break;
+ case O_absent: name = "O_absent"; break;
+ case O_constant: name = "O_constant"; break;
+ case O_symbol: name = "O_symbol"; break;
+ case O_symbol_rva: name = "O_symbol_rva"; break;
+ case O_register: name = "O_register"; break;
+ case O_big: name = "O_big"; break;
+ case O_uminus: name = "O_uminus"; break;
+ case O_bit_not: name = "O_bit_not"; break;
+ case O_logical_not: name = "O_logical_not"; break;
+ case O_multiply: name = "O_multiply"; break;
+ case O_divide: name = "O_divide"; break;
+ case O_modulus: name = "O_modulus"; break;
+ case O_left_shift: name = "O_left_shift"; break;
+ case O_right_shift: name = "O_right_shift"; break;
+ case O_bit_inclusive_or: name = "O_bit_inclusive_or"; break;
+ case O_bit_or_not: name = "O_bit_or_not"; break;
+ case O_bit_exclusive_or: name = "O_bit_exclusive_or"; break;
+ case O_bit_and: name = "O_bit_and"; break;
+ case O_add: name = "O_add"; break;
+ case O_subtract: name = "O_subtract"; break;
+ case O_eq: name = "O_eq"; break;
+ case O_ne: name = "O_ne"; break;
+ case O_lt: name = "O_lt"; break;
+ case O_le: name = "O_le"; break;
+ case O_ge: name = "O_ge"; break;
+ case O_gt: name = "O_gt"; break;
+ case O_logical_and: name = "O_logical_and"; break;
+ case O_logical_or: name = "O_logical_or"; break;
+ case O_index: name = "O_index"; break;
+ case O_pregister: name = "O_pregister"; break;
+ case O_cpregister: name = "O_cpregister"; break;
+ case O_literal: name = "O_literal"; break;
+ case O_lituse_addr: name = "O_lituse_addr"; break;
+ case O_lituse_base: name = "O_lituse_base"; break;
+ case O_lituse_bytoff: name = "O_lituse_bytoff"; break;
+ case O_lituse_jsr: name = "O_lituse_jsr"; break;
+ case O_lituse_tlsgd: name = "O_lituse_tlsgd"; break;
+ case O_lituse_tlsldm: name = "O_lituse_tlsldm"; break;
+ case O_lituse_jsrdirect: name = "O_lituse_jsrdirect"; break;
+ case O_gpdisp: name = "O_gpdisp"; break;
+ case O_gprelhigh: name = "O_gprelhigh"; break;
+ case O_gprellow: name = "O_gprellow"; break;
+ case O_gprel: name = "O_gprel"; break;
+ case O_samegp: name = "O_samegp"; break;
+ case O_tlsgd: name = "O_tlsgd"; break;
+ case O_tlsldm: name = "O_tlsldm"; break;
+ case O_gotdtprel: name = "O_gotdtprel"; break;
+ case O_dtprelhi: name = "O_dtprelhi"; break;
+ case O_dtprello: name = "O_dtprello"; break;
+ case O_dtprel: name = "O_dtprel"; break;
+ case O_gottprel: name = "O_gottprel"; break;
+ case O_tprelhi: name = "O_tprelhi"; break;
+ case O_tprello: name = "O_tprello"; break;
+ case O_tprel: name = "O_tprel"; break;
+ }
- for (i = 0; i < 32; ++i)
- {
- char name[4];
- sprintf (name, "$%d", i);
- alpha_register_table[i] = symbol_create (name, reg_section, i,
- &zero_address_frag);
- }
- for (; i < 64; ++i)
- {
- char name[5];
- sprintf (name, "$f%d", i - 32);
- alpha_register_table[i] = symbol_create (name, reg_section, i,
- &zero_address_frag);
+ fprintf (stderr, ", %s(%s, %s, %d)", name,
+ (t->X_add_symbol) ? S_GET_NAME (t->X_add_symbol) : "--",
+ (t->X_op_symbol) ? S_GET_NAME (t->X_op_symbol) : "--",
+ (int) t->X_add_number);
}
+ fprintf (stderr, "\n");
+ fflush (stderr);
+}
+#endif
- /* Create the special symbols and sections we'll be using */
+/* Parse the arguments to an opcode. */
- /* So .sbss will get used for tiny objects. */
- bfd_set_gp_size (stdoutput, g_switch_value);
+static int
+tokenize_arguments (char *str,
+ expressionS tok[],
+ int ntok)
+{
+ expressionS *end_tok = tok + ntok;
+ char *old_input_line_pointer;
+ int saw_comma = 0, saw_arg = 0;
+#ifdef DEBUG_ALPHA
+ expressionS *orig_tok = tok;
+#endif
+#ifdef RELOC_OP_P
+ char *p;
+ const struct alpha_reloc_op_tag *r;
+ int c, i;
+ size_t len;
+ int reloc_found_p = 0;
+#endif
-#ifdef OBJ_ECOFF
- create_literal_section (".lita", &alpha_lita_section, &alpha_lita_symbol);
+ memset (tok, 0, sizeof (*tok) * ntok);
- /* For handling the GP, create a symbol that won't be output in the
- symbol table. We'll edit it out of relocs later. */
- alpha_gp_symbol = symbol_create ("<GP value>", alpha_lita_section, 0x8000,
- &zero_address_frag);
-#endif
+ /* Save and restore input_line_pointer around this function. */
+ old_input_line_pointer = input_line_pointer;
+ input_line_pointer = str;
-#ifdef OBJ_EVAX
- create_literal_section (".link", &alpha_link_section, &alpha_link_symbol);
+#ifdef RELOC_OP_P
+ /* ??? Wrest control of ! away from the regular expression parser. */
+ is_end_of_line[(unsigned char) '!'] = 1;
#endif
-#ifdef OBJ_ELF
- if (ECOFF_DEBUGGING)
+ while (tok < end_tok && *input_line_pointer)
{
- segT sec = subseg_new (".mdebug", (subsegT) 0);
- bfd_set_section_flags (stdoutput, sec, SEC_HAS_CONTENTS | SEC_READONLY);
- bfd_set_section_alignment (stdoutput, sec, 3);
- }
-#endif /* OBJ_ELF */
-
- /* Create literal lookup hash table. */
- alpha_literal_hash = hash_new ();
+ SKIP_WHITESPACE ();
+ switch (*input_line_pointer)
+ {
+ case '\0':
+ goto fini;
- subseg_set (text_section, 0);
-}
+#ifdef RELOC_OP_P
+ case '!':
+ /* A relocation operand can be placed after the normal operand on an
+ assembly language statement, and has the following form:
+ !relocation_type!sequence_number. */
+ if (reloc_found_p)
+ {
+ /* Only support one relocation op per insn. */
+ as_bad (_("More than one relocation op per insn"));
+ goto err_report;
+ }
-/* The public interface to the instruction assembler. */
+ if (!saw_arg)
+ goto err;
-void
-md_assemble (str)
- char *str;
-{
- char opname[32]; /* current maximum is 13 */
- expressionS tok[MAX_INSN_ARGS];
- int ntok, trunclen;
- size_t opnamelen;
+ ++input_line_pointer;
+ SKIP_WHITESPACE ();
+ p = input_line_pointer;
+ c = get_symbol_end ();
- /* split off the opcode */
- opnamelen = strspn (str, "abcdefghijklmnopqrstuvwxyz_/46819");
- trunclen = (opnamelen < sizeof (opname) - 1
- ? opnamelen
- : sizeof (opname) - 1);
- memcpy (opname, str, trunclen);
- opname[trunclen] = '\0';
+ /* Parse !relocation_type. */
+ len = input_line_pointer - p;
+ if (len == 0)
+ {
+ as_bad (_("No relocation operand"));
+ goto err_report;
+ }
- /* tokenize the rest of the line */
- if ((ntok = tokenize_arguments (str + opnamelen, tok, MAX_INSN_ARGS)) < 0)
- {
- if (ntok != TOKENIZE_ERROR_REPORT)
- as_bad (_("syntax error"));
+ r = &alpha_reloc_op[0];
+ for (i = alpha_num_reloc_op - 1; i >= 0; i--, r++)
+ if (len == r->length && memcmp (p, r->name, len) == 0)
+ break;
+ if (i < 0)
+ {
+ as_bad (_("Unknown relocation operand: !%s"), p);
+ goto err_report;
+ }
- return;
- }
+ *input_line_pointer = c;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer != '!')
+ {
+ if (r->require_seq)
+ {
+ as_bad (_("no sequence number after !%s"), p);
+ goto err_report;
+ }
- /* finish it off */
- assemble_tokens (opname, tok, ntok, alpha_macros_on);
-}
+ tok->X_add_number = 0;
+ }
+ else
+ {
+ if (! r->allow_seq)
+ {
+ as_bad (_("!%s does not use a sequence number"), p);
+ goto err_report;
+ }
-/* Round up a section's size to the appropriate boundary. */
+ input_line_pointer++;
-valueT
-md_section_align (seg, size)
- segT seg;
- valueT size;
-{
- int align = bfd_get_section_alignment (stdoutput, seg);
- valueT mask = ((valueT) 1 << align) - 1;
+ /* Parse !sequence_number. */
+ expression (tok);
+ if (tok->X_op != O_constant || tok->X_add_number <= 0)
+ {
+ as_bad (_("Bad sequence number: !%s!%s"),
+ r->name, input_line_pointer);
+ goto err_report;
+ }
+ }
- return (size + mask) & ~mask;
-}
+ tok->X_op = r->op;
+ reloc_found_p = 1;
+ ++tok;
+ break;
+#endif /* RELOC_OP_P */
-/* Turn a string in input_line_pointer into a floating point constant
- of type TYPE, and store the appropriate bytes in *LITP. The number
- of LITTLENUMS emitted is stored in *SIZEP. An error message is
- returned, or NULL on OK. */
+ case ',':
+ ++input_line_pointer;
+ if (saw_comma || !saw_arg)
+ goto err;
+ saw_comma = 1;
+ break;
-/* Equal to MAX_PRECISION in atof-ieee.c */
-#define MAX_LITTLENUMS 6
+ case '(':
+ {
+ char *hold = input_line_pointer++;
-extern char *vax_md_atof PARAMS ((int, char *, int *));
+ /* First try for parenthesized register ... */
+ expression (tok);
+ if (*input_line_pointer == ')' && tok->X_op == O_register)
+ {
+ tok->X_op = (saw_comma ? O_cpregister : O_pregister);
+ saw_comma = 0;
+ saw_arg = 1;
+ ++input_line_pointer;
+ ++tok;
+ break;
+ }
-char *
-md_atof (type, litP, sizeP)
- char type;
- char *litP;
- int *sizeP;
-{
- int prec;
- LITTLENUM_TYPE words[MAX_LITTLENUMS];
- LITTLENUM_TYPE *wordP;
- char *t;
+ /* ... then fall through to plain expression. */
+ input_line_pointer = hold;
+ }
- switch (type)
- {
- /* VAX floats */
- case 'G':
- /* VAX md_atof doesn't like "G" for some reason. */
- type = 'g';
- case 'F':
- case 'D':
- return vax_md_atof (type, litP, sizeP);
+ default:
+ if (saw_arg && !saw_comma)
+ goto err;
- /* IEEE floats */
- case 'f':
- prec = 2;
- break;
+ expression (tok);
+ if (tok->X_op == O_illegal || tok->X_op == O_absent)
+ goto err;
- case 'd':
- prec = 4;
- break;
+ saw_comma = 0;
+ saw_arg = 1;
+ ++tok;
+ break;
+ }
+ }
- case 'x':
- case 'X':
- prec = 6;
- break;
+fini:
+ if (saw_comma)
+ goto err;
+ input_line_pointer = old_input_line_pointer;
- case 'p':
- case 'P':
- prec = 6;
- break;
+#ifdef DEBUG_ALPHA
+ debug_exp (orig_tok, ntok - (end_tok - tok));
+#endif
+#ifdef RELOC_OP_P
+ is_end_of_line[(unsigned char) '!'] = 0;
+#endif
- default:
- *sizeP = 0;
- return _("Bad call to MD_ATOF()");
- }
- t = atof_ieee (input_line_pointer, type, words);
- if (t)
- input_line_pointer = t;
- *sizeP = prec * sizeof (LITTLENUM_TYPE);
+ return ntok - (end_tok - tok);
- for (wordP = words + prec - 1; prec--;)
- {
- md_number_to_chars (litP, (long) (*wordP--), sizeof (LITTLENUM_TYPE));
- litP += sizeof (LITTLENUM_TYPE);
- }
+err:
+#ifdef RELOC_OP_P
+ is_end_of_line[(unsigned char) '!'] = 0;
+#endif
+ input_line_pointer = old_input_line_pointer;
+ return TOKENIZE_ERROR;
- return 0;
+#ifdef RELOC_OP_P
+err_report:
+ is_end_of_line[(unsigned char) '!'] = 0;
+#endif
+ input_line_pointer = old_input_line_pointer;
+ return TOKENIZE_ERROR_REPORT;
}
-/* Take care of the target-specific command-line options. */
+/* Search forward through all variants of an opcode looking for a
+ syntax match. */
-int
-md_parse_option (c, arg)
- int c;
- char *arg;
+static const struct alpha_opcode *
+find_opcode_match (const struct alpha_opcode *first_opcode,
+ const expressionS *tok,
+ int *pntok,
+ int *pcpumatch)
{
- switch (c)
+ const struct alpha_opcode *opcode = first_opcode;
+ int ntok = *pntok;
+ int got_cpu_match = 0;
+
+ do
{
- case 'F':
- alpha_nofloats_on = 1;
- break;
+ const unsigned char *opidx;
+ int tokidx = 0;
- case OPTION_32ADDR:
- alpha_addr32_on = 1;
- break;
+ /* Don't match opcodes that don't exist on this architecture. */
+ if (!(opcode->flags & alpha_target))
+ goto match_failed;
- case 'g':
- alpha_debug = 1;
- break;
+ got_cpu_match = 1;
- case 'G':
- g_switch_value = atoi (arg);
- break;
+ for (opidx = opcode->operands; *opidx; ++opidx)
+ {
+ const struct alpha_operand *operand = &alpha_operands[*opidx];
- case 'm':
- {
- const struct cpu_type *p;
- for (p = cpu_types; p->name; ++p)
- if (strcmp (arg, p->name) == 0)
+ /* Only take input from real operands. */
+ if (operand->flags & AXP_OPERAND_FAKE)
+ continue;
+
+ /* When we expect input, make sure we have it. */
+ if (tokidx >= ntok)
{
- alpha_target_name = p->name, alpha_target = p->flags;
- goto found;
+ if ((operand->flags & AXP_OPERAND_OPTIONAL_MASK) == 0)
+ goto match_failed;
+ continue;
}
- as_warn (_("Unknown CPU identifier `%s'"), arg);
- found:;
- }
- break;
-
-#ifdef OBJ_EVAX
- case '+': /* For g++. Hash any name > 63 chars long. */
- alpha_flag_hash_long_names = 1;
- break;
-
- case 'H': /* Show new symbol after hash truncation */
- alpha_flag_show_after_trunc = 1;
- break;
-
- case 'h': /* for gnu-c/vax compatibility. */
- break;
-#endif
-
- case OPTION_RELAX:
- alpha_flag_relax = 1;
- break;
-#ifdef OBJ_ELF
- case OPTION_MDEBUG:
- alpha_flag_mdebug = 1;
- break;
- case OPTION_NO_MDEBUG:
- alpha_flag_mdebug = 0;
- break;
-#endif
+ /* Match operand type with expression type. */
+ switch (operand->flags & AXP_OPERAND_TYPECHECK_MASK)
+ {
+ case AXP_OPERAND_IR:
+ if (tok[tokidx].X_op != O_register
+ || !is_ir_num (tok[tokidx].X_add_number))
+ goto match_failed;
+ break;
+ case AXP_OPERAND_FPR:
+ if (tok[tokidx].X_op != O_register
+ || !is_fpr_num (tok[tokidx].X_add_number))
+ goto match_failed;
+ break;
+ case AXP_OPERAND_IR | AXP_OPERAND_PARENS:
+ if (tok[tokidx].X_op != O_pregister
+ || !is_ir_num (tok[tokidx].X_add_number))
+ goto match_failed;
+ break;
+ case AXP_OPERAND_IR | AXP_OPERAND_PARENS | AXP_OPERAND_COMMA:
+ if (tok[tokidx].X_op != O_cpregister
+ || !is_ir_num (tok[tokidx].X_add_number))
+ goto match_failed;
+ break;
- default:
- return 0;
+ case AXP_OPERAND_RELATIVE:
+ case AXP_OPERAND_SIGNED:
+ case AXP_OPERAND_UNSIGNED:
+ switch (tok[tokidx].X_op)
+ {
+ case O_illegal:
+ case O_absent:
+ case O_register:
+ case O_pregister:
+ case O_cpregister:
+ goto match_failed;
+
+ default:
+ break;
+ }
+ break;
+
+ default:
+ /* Everything else should have been fake. */
+ abort ();
+ }
+ ++tokidx;
+ }
+
+ /* Possible match -- did we use all of our input? */
+ if (tokidx == ntok)
+ {
+ *pntok = ntok;
+ return opcode;
+ }
+
+ match_failed:;
}
+ while (++opcode - alpha_opcodes < (int) alpha_num_opcodes
+ && !strcmp (opcode->name, first_opcode->name));
- return 1;
+ if (*pcpumatch)
+ *pcpumatch = got_cpu_match;
+
+ return NULL;
}
-/* Print a description of the command-line options that we accept. */
+/* Given an opcode name and a pre-tokenized set of arguments, assemble
+ the insn, but do not emit it.
-void
-md_show_usage (stream)
- FILE *stream;
+ Note that this implies no macros allowed, since we can't store more
+ than one insn in an insn structure. */
+
+static void
+assemble_tokens_to_insn (const char *opname,
+ const expressionS *tok,
+ int ntok,
+ struct alpha_insn *insn)
{
- fputs (_("\
-Alpha options:\n\
--32addr treat addresses as 32-bit values\n\
--F lack floating point instructions support\n\
--mev4 | -mev45 | -mev5 | -mev56 | -mpca56 | -mev6 | -mall\n\
- specify variant of Alpha architecture\n\
--m21064 | -m21066 | -m21164 | -m21164a | -m21164pc | -m21264\n\
- these variants include PALcode opcodes\n"),
- stream);
-#ifdef OBJ_EVAX
- fputs (_("\
-VMS options:\n\
--+ hash encode (don't truncate) names longer than 64 characters\n\
--H show new symbol after hash truncation\n"),
- stream);
-#endif
+ const struct alpha_opcode *opcode;
+
+ /* Search opcodes. */
+ opcode = (const struct alpha_opcode *) hash_find (alpha_opcode_hash, opname);
+ if (opcode)
+ {
+ int cpumatch;
+ opcode = find_opcode_match (opcode, tok, &ntok, &cpumatch);
+ if (opcode)
+ {
+ assemble_insn (opcode, tok, ntok, insn, BFD_RELOC_UNUSED);
+ return;
+ }
+ else if (cpumatch)
+ as_bad (_("inappropriate arguments for opcode `%s'"), opname);
+ else
+ as_bad (_("opcode `%s' not supported for target %s"), opname,
+ alpha_target_name);
+ }
+ else
+ as_bad (_("unknown opcode `%s'"), opname);
}
-/* Decide from what point a pc-relative relocation is relative to,
- relative to the pc-relative fixup. Er, relatively speaking. */
+/* Build a BFD section with its flags set appropriately for the .lita,
+ .lit8, or .lit4 sections. */
-long
-md_pcrel_from (fixP)
- fixS *fixP;
+static void
+create_literal_section (const char *name,
+ segT *secp,
+ symbolS **symp)
{
- valueT addr = fixP->fx_where + fixP->fx_frag->fr_address;
- switch (fixP->fx_r_type)
- {
- case BFD_RELOC_ALPHA_GPDISP:
- case BFD_RELOC_ALPHA_GPDISP_HI16:
- case BFD_RELOC_ALPHA_GPDISP_LO16:
- return addr;
- default:
- return fixP->fx_size + addr;
- }
+ segT current_section = now_seg;
+ int current_subsec = now_subseg;
+ segT new_sec;
+
+ *secp = new_sec = subseg_new (name, 0);
+ subseg_set (current_section, current_subsec);
+ bfd_set_section_alignment (stdoutput, new_sec, 4);
+ bfd_set_section_flags (stdoutput, new_sec,
+ SEC_RELOC | SEC_ALLOC | SEC_LOAD | SEC_READONLY
+ | SEC_DATA);
+
+ S_CLEAR_EXTERNAL (*symp = section_symbol (new_sec));
}
-/* Attempt to simplify or even eliminate a fixup. The return value is
- ignored; perhaps it was once meaningful, but now it is historical.
- To indicate that a fixup has been eliminated, set fixP->fx_done.
+/* Load a (partial) expression into a target register.
- For ELF, here it is that we transform the GPDISP_HI16 reloc we used
- internally into the GPDISP reloc used externally. We had to do
- this so that we'd have the GPDISP_LO16 reloc as a tag to compute
- the distance to the "lda" instruction for setting the addend to
- GPDISP. */
+ If poffset is not null, after the call it will either contain
+ O_constant 0, or a 16-bit offset appropriate for any MEM format
+ instruction. In addition, pbasereg will be modified to point to
+ the base register to use in that MEM format instruction.
-int
-md_apply_fix3 (fixP, valueP, seg)
- fixS *fixP;
- valueT *valueP;
- segT seg;
+ In any case, *pbasereg should contain a base register to add to the
+ expression. This will normally be either AXP_REG_ZERO or
+ alpha_gp_register. Symbol addresses will always be loaded via $gp,
+ so "foo($0)" is interpreted as adding the address of foo to $0;
+ i.e. "ldq $targ, LIT($gp); addq $targ, $0, $targ". Odd, perhaps,
+ but this is what OSF/1 does.
+
+ If explicit relocations of the form !literal!<number> are allowed,
+ and used, then explicit_reloc with be an expression pointer.
+
+ Finally, the return value is nonzero if the calling macro may emit
+ a LITUSE reloc if otherwise appropriate; the return value is the
+ sequence number to use. */
+
+static long
+load_expression (int targreg,
+ const expressionS *exp,
+ int *pbasereg,
+ expressionS *poffset,
+ const char *opname)
{
- char * const fixpos = fixP->fx_frag->fr_literal + fixP->fx_where;
- valueT value = *valueP;
- unsigned image, size;
+ long emit_lituse = 0;
+ offsetT addend = exp->X_add_number;
+ int basereg = *pbasereg;
+ struct alpha_insn insn;
+ expressionS newtok[3];
- switch (fixP->fx_r_type)
+ switch (exp->X_op)
{
- /* The GPDISP relocations are processed internally with a symbol
- referring to the current function; we need to drop in a value
- which, when added to the address of the start of the function,
- gives the desired GP. */
- case BFD_RELOC_ALPHA_GPDISP_HI16:
+ case O_symbol:
{
- fixS *next = fixP->fx_next;
+#ifdef OBJ_ECOFF
+ offsetT lit;
- /* With user-specified !gpdisp relocations, we can be missing
- the matching LO16 reloc. We will have already issued an
- error message. */
- if (next)
- fixP->fx_offset = (next->fx_frag->fr_address + next->fx_where
- - fixP->fx_frag->fr_address - fixP->fx_where);
+ /* Attempt to reduce .lit load by splitting the offset from
+ its symbol when possible, but don't create a situation in
+ which we'd fail. */
+ if (!range_signed_32 (addend) &&
+ (alpha_noat_on || targreg == AXP_REG_AT))
+ {
+ lit = add_to_literal_pool (exp->X_add_symbol, addend,
+ alpha_lita_section, 8);
+ addend = 0;
+ }
+ else
+ lit = add_to_literal_pool (exp->X_add_symbol, 0,
+ alpha_lita_section, 8);
- value = (value - sign_extend_16 (value)) >> 16;
- }
-#ifdef OBJ_ELF
- fixP->fx_r_type = BFD_RELOC_ALPHA_GPDISP;
-#endif
- goto do_reloc_gp;
+ if (lit >= 0x8000)
+ as_fatal (_("overflow in literal (.lita) table"));
- case BFD_RELOC_ALPHA_GPDISP_LO16:
- value = sign_extend_16 (value);
- fixP->fx_offset = 0;
-#ifdef OBJ_ELF
- fixP->fx_done = 1;
-#endif
+ /* Emit "ldq r, lit(gp)". */
- do_reloc_gp:
- fixP->fx_addsy = section_symbol (seg);
- md_number_to_chars (fixpos, value, 2);
- break;
+ if (basereg != alpha_gp_register && targreg == basereg)
+ {
+ if (alpha_noat_on)
+ as_bad (_("macro requires $at register while noat in effect"));
+ if (targreg == AXP_REG_AT)
+ as_bad (_("macro requires $at while $at in use"));
- case BFD_RELOC_16:
- if (fixP->fx_pcrel)
- fixP->fx_r_type = BFD_RELOC_16_PCREL;
- size = 2;
- goto do_reloc_xx;
- case BFD_RELOC_32:
- if (fixP->fx_pcrel)
- fixP->fx_r_type = BFD_RELOC_32_PCREL;
- size = 4;
- goto do_reloc_xx;
- case BFD_RELOC_64:
- if (fixP->fx_pcrel)
- fixP->fx_r_type = BFD_RELOC_64_PCREL;
- size = 8;
- do_reloc_xx:
- if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0)
- {
- md_number_to_chars (fixpos, value, size);
- goto done;
- }
- return 1;
+ set_tok_reg (newtok[0], AXP_REG_AT);
+ }
+ else
+ set_tok_reg (newtok[0], targreg);
-#ifdef OBJ_ECOFF
- case BFD_RELOC_GPREL32:
- assert (fixP->fx_subsy == alpha_gp_symbol);
- fixP->fx_subsy = 0;
- /* FIXME: inherited this obliviousness of `value' -- why? */
- md_number_to_chars (fixpos, -alpha_gp_value, 4);
- break;
-#else
- case BFD_RELOC_GPREL32:
-#endif
- case BFD_RELOC_GPREL16:
- case BFD_RELOC_ALPHA_GPREL_HI16:
- case BFD_RELOC_ALPHA_GPREL_LO16:
- return 1;
+ set_tok_sym (newtok[1], alpha_lita_symbol, lit);
+ set_tok_preg (newtok[2], alpha_gp_register);
- case BFD_RELOC_23_PCREL_S2:
- if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0)
- {
- image = bfd_getl32 (fixpos);
- image = (image & ~0x1FFFFF) | ((value >> 2) & 0x1FFFFF);
- goto write_done;
- }
- return 1;
+ assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
- case BFD_RELOC_ALPHA_HINT:
- if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0)
- {
- image = bfd_getl32 (fixpos);
- image = (image & ~0x3FFF) | ((value >> 2) & 0x3FFF);
- goto write_done;
- }
- return 1;
+ gas_assert (insn.nfixups == 1);
+ insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITERAL;
+ insn.sequence = emit_lituse = next_sequence_num--;
+#endif /* OBJ_ECOFF */
+#ifdef OBJ_ELF
+ /* Emit "ldq r, gotoff(gp)". */
-#ifdef OBJ_ECOFF
- case BFD_RELOC_ALPHA_LITERAL:
- md_number_to_chars (fixpos, value, 2);
- return 1;
-#endif
- case BFD_RELOC_ALPHA_ELF_LITERAL:
- case BFD_RELOC_ALPHA_LITUSE:
- case BFD_RELOC_ALPHA_LINKAGE:
- case BFD_RELOC_ALPHA_CODEADDR:
- return 1;
+ if (basereg != alpha_gp_register && targreg == basereg)
+ {
+ if (alpha_noat_on)
+ as_bad (_("macro requires $at register while noat in effect"));
+ if (targreg == AXP_REG_AT)
+ as_bad (_("macro requires $at while $at in use"));
- case BFD_RELOC_VTABLE_INHERIT:
- case BFD_RELOC_VTABLE_ENTRY:
- return 1;
+ set_tok_reg (newtok[0], AXP_REG_AT);
+ }
+ else
+ set_tok_reg (newtok[0], targreg);
- default:
- {
- const struct alpha_operand *operand;
+ /* XXX: Disable this .got minimizing optimization so that we can get
+ better instruction offset knowledge in the compiler. This happens
+ very infrequently anyway. */
+ if (1
+ || (!range_signed_32 (addend)
+ && (alpha_noat_on || targreg == AXP_REG_AT)))
+ {
+ newtok[1] = *exp;
+ addend = 0;
+ }
+ else
+ set_tok_sym (newtok[1], exp->X_add_symbol, 0);
- if ((int) fixP->fx_r_type >= 0)
- as_fatal (_("unhandled relocation type %s"),
- bfd_get_reloc_code_name (fixP->fx_r_type));
+ set_tok_preg (newtok[2], alpha_gp_register);
- assert (-(int) fixP->fx_r_type < (int) alpha_num_operands);
- operand = &alpha_operands[-(int) fixP->fx_r_type];
+ assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
- /* The rest of these fixups only exist internally during symbol
- resolution and have no representation in the object file.
- Therefore they must be completely resolved as constants. */
+ gas_assert (insn.nfixups == 1);
+ insn.fixups[0].reloc = BFD_RELOC_ALPHA_ELF_LITERAL;
+ insn.sequence = emit_lituse = next_sequence_num--;
+#endif /* OBJ_ELF */
+#ifdef OBJ_EVAX
+ /* Find symbol or symbol pointer in link section. */
- if (fixP->fx_addsy != 0
- && S_GET_SEGMENT (fixP->fx_addsy) != absolute_section)
- as_bad_where (fixP->fx_file, fixP->fx_line,
- _("non-absolute expression in constant field"));
+ if (exp->X_add_symbol == alpha_evax_proc->symbol)
+ {
+ if (range_signed_16 (addend))
+ {
+ set_tok_reg (newtok[0], targreg);
+ set_tok_const (newtok[1], addend);
+ set_tok_preg (newtok[2], basereg);
+ assemble_tokens_to_insn ("lda", newtok, 3, &insn);
+ addend = 0;
+ }
+ else
+ {
+ set_tok_reg (newtok[0], targreg);
+ set_tok_const (newtok[1], 0);
+ set_tok_preg (newtok[2], basereg);
+ assemble_tokens_to_insn ("lda", newtok, 3, &insn);
+ }
+ }
+ else
+ {
+ const char *symname = S_GET_NAME (exp->X_add_symbol);
+ const char *ptr1, *ptr2;
+ int symlen = strlen (symname);
- image = bfd_getl32 (fixpos);
- image = insert_operand (image, operand, (offsetT) value,
- fixP->fx_file, fixP->fx_line);
- }
- goto write_done;
- }
+ if ((symlen > 4 &&
+ strcmp (ptr2 = &symname [symlen - 4], "..lk") == 0))
+ {
+ set_tok_reg (newtok[0], targreg);
- if (fixP->fx_addsy != 0 || fixP->fx_pcrel != 0)
- return 1;
- else
- {
- as_warn_where (fixP->fx_file, fixP->fx_line,
- _("type %d reloc done?\n"), (int) fixP->fx_r_type);
- goto done;
- }
+ newtok[1] = *exp;
+ newtok[1].X_op = O_subtract;
+ newtok[1].X_op_symbol = alpha_evax_proc->symbol;
-write_done:
- md_number_to_chars (fixpos, image, 4);
+ set_tok_preg (newtok[2], basereg);
+ assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
+ alpha_linkage_symbol = exp->X_add_symbol;
+
+ if (poffset)
+ set_tok_const (*poffset, 0);
+
+ if (alpha_flag_replace && targreg == 26)
+ {
+ char *ensymname;
+ symbolS *ensym;
+ volatile asymbol *dummy;
+
+ ptr1 = strstr (symname, "..") + 2;
+ if (ptr1 > ptr2)
+ ptr1 = symname;
+ ensymname = (char *) xmalloc (ptr2 - ptr1 + 5);
+ memcpy (ensymname, ptr1, ptr2 - ptr1);
+ memcpy (ensymname + (ptr2 - ptr1), "..en", 5);
+
+ gas_assert (insn.nfixups + 1 <= MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = BFD_RELOC_ALPHA_NOP;
+ ensym = symbol_find_or_make (ensymname);
+ ensym->sy_used = 1;
+ /* The fixup must be the same as the BFD_RELOC_ALPHA_BOH
+ case in emit_jsrjmp. See B.4.5.2 of the OpenVMS Linker
+ Utility Manual. */
+ insn.fixups[insn.nfixups].exp.X_op = O_symbol;
+ insn.fixups[insn.nfixups].exp.X_add_symbol = ensym;
+ insn.fixups[insn.nfixups].exp.X_add_number = 0;
+ insn.fixups[insn.nfixups].xtrasym = alpha_linkage_symbol;
+ insn.fixups[insn.nfixups].procsym = alpha_evax_proc->symbol;
+ insn.nfixups++;
+
+ /* ??? Force bsym to be instantiated now, as it will be
+ too late to do so in tc_gen_reloc. */
+ dummy = symbol_get_bfdsym (exp->X_add_symbol);
+ }
+ else if (alpha_flag_replace && targreg == 27)
+ {
+ char *psymname;
+ symbolS *psym;
+
+ ptr1 = strstr (symname, "..") + 2;
+ if (ptr1 > ptr2)
+ ptr1 = symname;
+ psymname = (char *) xmalloc (ptr2 - ptr1 + 1);
+ memcpy (psymname, ptr1, ptr2 - ptr1);
+ psymname [ptr2 - ptr1] = 0;
+ gas_assert (insn.nfixups + 1 <= MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = BFD_RELOC_ALPHA_LDA;
+ psym = symbol_find_or_make (psymname);
+ psym->sy_used = 1;
+ insn.fixups[insn.nfixups].exp.X_op = O_subtract;
+ insn.fixups[insn.nfixups].exp.X_add_symbol = psym;
+ insn.fixups[insn.nfixups].exp.X_op_symbol = alpha_evax_proc->symbol;
+ insn.fixups[insn.nfixups].exp.X_add_number = 0;
+ insn.fixups[insn.nfixups].xtrasym = alpha_linkage_symbol;
+ insn.fixups[insn.nfixups].procsym = alpha_evax_proc->symbol;
+ insn.nfixups++;
+ }
+
+ emit_insn(&insn);
+ return 0;
+ }
+ else
+ {
+ symbolS *linkexp;
-done:
- fixP->fx_done = 1;
- return 0;
-}
+ if (!range_signed_32 (addend))
+ addend = sign_extend_32 (addend);
+ linkexp = add_to_link_pool (alpha_evax_proc->symbol,
+ exp->X_add_symbol, 0);
+ set_tok_reg (newtok[0], targreg);
+ set_tok_sym (newtok[1], linkexp, 0);
+ set_tok_preg (newtok[2], basereg);
+ assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
+ }
+ }
+#endif /* OBJ_EVAX */
-/*
- * Look for a register name in the given symbol.
- */
+ emit_insn (&insn);
-symbolS *
-md_undefined_symbol (name)
- char *name;
-{
- if (*name == '$')
- {
- int is_float = 0, num;
+#ifndef OBJ_EVAX
+ if (basereg != alpha_gp_register && basereg != AXP_REG_ZERO)
+ {
+ /* Emit "addq r, base, r". */
- switch (*++name)
- {
- case 'f':
- if (name[1] == 'p' && name[2] == '\0')
- return alpha_register_table[AXP_REG_FP];
- is_float = 32;
- /* FALLTHRU */
+ set_tok_reg (newtok[1], basereg);
+ set_tok_reg (newtok[2], targreg);
+ assemble_tokens ("addq", newtok, 3, 0);
+ }
+#endif
+ basereg = targreg;
+ }
+ break;
- case 'r':
- if (!isdigit (*++name))
- break;
- /* FALLTHRU */
+ case O_constant:
+ break;
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- if (name[1] == '\0')
- num = name[0] - '0';
- else if (name[0] != '0' && isdigit (name[1]) && name[2] == '\0')
- {
- num = (name[0] - '0') * 10 + name[1] - '0';
- if (num >= 32)
- break;
- }
- else
- break;
+ case O_subtract:
+ /* Assume that this difference expression will be resolved to an
+ absolute value and that that value will fit in 16 bits. */
- if (!alpha_noat_on && (num + is_float) == AXP_REG_AT)
- as_warn (_("Used $at without \".set noat\""));
- return alpha_register_table[num + is_float];
+ set_tok_reg (newtok[0], targreg);
+ newtok[1] = *exp;
+ set_tok_preg (newtok[2], basereg);
+ assemble_tokens (opname, newtok, 3, 0);
- case 'a':
- if (name[1] == 't' && name[2] == '\0')
- {
- if (!alpha_noat_on)
- as_warn (_("Used $at without \".set noat\""));
- return alpha_register_table[AXP_REG_AT];
- }
- break;
+ if (poffset)
+ set_tok_const (*poffset, 0);
+ return 0;
- case 'g':
- if (name[1] == 'p' && name[2] == '\0')
- return alpha_register_table[alpha_gp_register];
- break;
+ case O_big:
+ if (exp->X_add_number > 0)
+ as_bad (_("bignum invalid; zero assumed"));
+ else
+ as_bad (_("floating point number invalid; zero assumed"));
+ addend = 0;
+ break;
- case 's':
- if (name[1] == 'p' && name[2] == '\0')
- return alpha_register_table[AXP_REG_SP];
- break;
- }
+ default:
+ as_bad (_("can't handle expression"));
+ addend = 0;
+ break;
}
- return NULL;
-}
-
-#ifdef OBJ_ECOFF
-/* @@@ Magic ECOFF bits. */
-void
-alpha_frob_ecoff_data ()
-{
- select_gp_value ();
- /* $zero and $f31 are read-only */
- alpha_gprmask &= ~1;
- alpha_fprmask &= ~1;
-}
+ if (!range_signed_32 (addend))
+ {
+#ifdef OBJ_EVAX
+ symbolS *litexp;
+#else
+ offsetT lit;
+ long seq_num = next_sequence_num--;
#endif
-/* Hook to remember a recently defined label so that the auto-align
- code can adjust the symbol after we know what alignment will be
- required. */
+ /* For 64-bit addends, just put it in the literal pool. */
+#ifdef OBJ_EVAX
+ /* Emit "ldq targreg, lit(basereg)". */
+ litexp = add_to_link_pool (alpha_evax_proc->symbol,
+ section_symbol (absolute_section), addend);
+ set_tok_reg (newtok[0], targreg);
+ set_tok_sym (newtok[1], litexp, 0);
+ set_tok_preg (newtok[2], alpha_gp_register);
+ assemble_tokens ("ldq", newtok, 3, 0);
+#else
-void
-alpha_define_label (sym)
- symbolS *sym;
-{
- alpha_insn_label = sym;
-}
+ if (alpha_lit8_section == NULL)
+ {
+ create_literal_section (".lit8",
+ &alpha_lit8_section,
+ &alpha_lit8_symbol);
-/* Return true if we must always emit a reloc for a type and false if
- there is some hope of resolving it a assembly time. */
+#ifdef OBJ_ECOFF
+ alpha_lit8_literal = add_to_literal_pool (alpha_lit8_symbol, 0x8000,
+ alpha_lita_section, 8);
+ if (alpha_lit8_literal >= 0x8000)
+ as_fatal (_("overflow in literal (.lita) table"));
+#endif
+ }
-int
-alpha_force_relocation (f)
- fixS *f;
-{
- if (alpha_flag_relax)
- return 1;
+ lit = add_to_literal_pool (NULL, addend, alpha_lit8_section, 8) - 0x8000;
+ if (lit >= 0x8000)
+ as_fatal (_("overflow in literal (.lit8) table"));
- switch (f->fx_r_type)
- {
- case BFD_RELOC_ALPHA_GPDISP_HI16:
- case BFD_RELOC_ALPHA_GPDISP_LO16:
- case BFD_RELOC_ALPHA_GPDISP:
- case BFD_RELOC_ALPHA_LITERAL:
- case BFD_RELOC_ALPHA_ELF_LITERAL:
- case BFD_RELOC_ALPHA_LITUSE:
- case BFD_RELOC_GPREL16:
- case BFD_RELOC_GPREL32:
- case BFD_RELOC_ALPHA_GPREL_HI16:
- case BFD_RELOC_ALPHA_GPREL_LO16:
- case BFD_RELOC_ALPHA_LINKAGE:
- case BFD_RELOC_ALPHA_CODEADDR:
- case BFD_RELOC_VTABLE_INHERIT:
- case BFD_RELOC_VTABLE_ENTRY:
- return 1;
-
- case BFD_RELOC_23_PCREL_S2:
- case BFD_RELOC_32:
- case BFD_RELOC_64:
- case BFD_RELOC_ALPHA_HINT:
- return 0;
+ /* Emit "lda litreg, .lit8+0x8000". */
- default:
- assert ((int) f->fx_r_type < 0
- && -(int) f->fx_r_type < (int) alpha_num_operands);
- return 0;
- }
-}
-
-/* Return true if we can partially resolve a relocation now. */
+ if (targreg == basereg)
+ {
+ if (alpha_noat_on)
+ as_bad (_("macro requires $at register while noat in effect"));
+ if (targreg == AXP_REG_AT)
+ as_bad (_("macro requires $at while $at in use"));
-int
-alpha_fix_adjustable (f)
- fixS *f;
-{
+ set_tok_reg (newtok[0], AXP_REG_AT);
+ }
+ else
+ set_tok_reg (newtok[0], targreg);
+#ifdef OBJ_ECOFF
+ set_tok_sym (newtok[1], alpha_lita_symbol, alpha_lit8_literal);
+#endif
#ifdef OBJ_ELF
- /* Prevent all adjustments to global symbols */
- if (S_IS_EXTERN (f->fx_addsy) || S_IS_WEAK (f->fx_addsy))
- return 0;
+ set_tok_sym (newtok[1], alpha_lit8_symbol, 0x8000);
#endif
+ set_tok_preg (newtok[2], alpha_gp_register);
- /* Are there any relocation types for which we must generate a reloc
- but we can adjust the values contained within it? */
- switch (f->fx_r_type)
- {
- case BFD_RELOC_ALPHA_GPDISP_HI16:
- case BFD_RELOC_ALPHA_GPDISP_LO16:
- case BFD_RELOC_ALPHA_GPDISP:
- return 0;
-
- case BFD_RELOC_ALPHA_LITERAL:
- case BFD_RELOC_ALPHA_ELF_LITERAL:
- case BFD_RELOC_ALPHA_LITUSE:
- case BFD_RELOC_ALPHA_LINKAGE:
- case BFD_RELOC_ALPHA_CODEADDR:
- return 1;
+ assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
- case BFD_RELOC_VTABLE_ENTRY:
- case BFD_RELOC_VTABLE_INHERIT:
- return 0;
+ gas_assert (insn.nfixups == 1);
+#ifdef OBJ_ECOFF
+ insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITERAL;
+#endif
+#ifdef OBJ_ELF
+ insn.fixups[0].reloc = BFD_RELOC_ALPHA_ELF_LITERAL;
+#endif
+ insn.sequence = seq_num;
- case BFD_RELOC_GPREL16:
- case BFD_RELOC_GPREL32:
- case BFD_RELOC_ALPHA_GPREL_HI16:
- case BFD_RELOC_ALPHA_GPREL_LO16:
- case BFD_RELOC_23_PCREL_S2:
- case BFD_RELOC_32:
- case BFD_RELOC_64:
- case BFD_RELOC_ALPHA_HINT:
- return 1;
+ emit_insn (&insn);
- default:
- assert ((int) f->fx_r_type < 0
- && - (int) f->fx_r_type < (int) alpha_num_operands);
- return 1;
- }
- /*NOTREACHED*/
-}
+ /* Emit "ldq litreg, lit(litreg)". */
-/* Generate the BFD reloc to be stuck in the object file from the
- fixup used internally in the assembler. */
+ set_tok_const (newtok[1], lit);
+ set_tok_preg (newtok[2], newtok[0].X_add_number);
-arelent *
-tc_gen_reloc (sec, fixp)
- asection *sec ATTRIBUTE_UNUSED;
- fixS *fixp;
-{
- arelent *reloc;
+ assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
- reloc = (arelent *) xmalloc (sizeof (arelent));
- reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
- *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
- reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
+ insn.fixups[insn.nfixups].exp.X_op = O_absent;
+ insn.nfixups++;
+ insn.sequence = seq_num;
+ emit_lituse = 0;
- /* Make sure none of our internal relocations make it this far.
- They'd better have been fully resolved by this point. */
- assert ((int) fixp->fx_r_type > 0);
+ emit_insn (&insn);
- reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
- if (reloc->howto == NULL)
- {
- as_bad_where (fixp->fx_file, fixp->fx_line,
- _("cannot represent `%s' relocation in object file"),
- bfd_get_reloc_code_name (fixp->fx_r_type));
- return NULL;
- }
+ /* Emit "addq litreg, base, target". */
- if (!fixp->fx_pcrel != !reloc->howto->pc_relative)
- {
- as_fatal (_("internal error? cannot generate `%s' relocation"),
- bfd_get_reloc_code_name (fixp->fx_r_type));
- }
- assert (!fixp->fx_pcrel == !reloc->howto->pc_relative);
+ if (basereg != AXP_REG_ZERO)
+ {
+ set_tok_reg (newtok[1], basereg);
+ set_tok_reg (newtok[2], targreg);
+ assemble_tokens ("addq", newtok, 3, 0);
+ }
+#endif /* !OBJ_EVAX */
-#ifdef OBJ_ECOFF
- if (fixp->fx_r_type == BFD_RELOC_ALPHA_LITERAL)
- {
- /* fake out bfd_perform_relocation. sigh */
- reloc->addend = -alpha_gp_value;
+ if (poffset)
+ set_tok_const (*poffset, 0);
+ *pbasereg = targreg;
}
else
-#endif
{
- reloc->addend = fixp->fx_offset;
-#ifdef OBJ_ELF
- /*
- * Ohhh, this is ugly. The problem is that if this is a local global
- * symbol, the relocation will entirely be performed at link time, not
- * at assembly time. bfd_perform_reloc doesn't know about this sort
- * of thing, and as a result we need to fake it out here.
- */
- if ((S_IS_EXTERN (fixp->fx_addsy) || S_IS_WEAK (fixp->fx_addsy)
- || (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE))
- && !S_IS_COMMON (fixp->fx_addsy))
- reloc->addend -= symbol_get_bfdsym (fixp->fx_addsy)->value;
-#endif
- }
+ offsetT low, high, extra, tmp;
- return reloc;
-}
+ /* For 32-bit operands, break up the addend. */
-/* Parse a register name off of the input_line and return a register
- number. Gets md_undefined_symbol above to do the register name
- matching for us.
+ low = sign_extend_16 (addend);
+ tmp = addend - low;
+ high = sign_extend_16 (tmp >> 16);
- Only called as a part of processing the ECOFF .frame directive. */
+ if (tmp - (high << 16))
+ {
+ extra = 0x4000;
+ tmp -= 0x40000000;
+ high = sign_extend_16 (tmp >> 16);
+ }
+ else
+ extra = 0;
-int
-tc_get_register (frame)
- int frame ATTRIBUTE_UNUSED;
-{
- int framereg = AXP_REG_SP;
+ set_tok_reg (newtok[0], targreg);
+ set_tok_preg (newtok[2], basereg);
- SKIP_WHITESPACE ();
- if (*input_line_pointer == '$')
- {
- char *s = input_line_pointer;
- char c = get_symbol_end ();
- symbolS *sym = md_undefined_symbol (s);
+ if (extra)
+ {
+ /* Emit "ldah r, extra(r). */
+ set_tok_const (newtok[1], extra);
+ assemble_tokens ("ldah", newtok, 3, 0);
+ set_tok_preg (newtok[2], basereg = targreg);
+ }
- *strchr (s, '\0') = c;
- if (sym && (framereg = S_GET_VALUE (sym)) <= 31)
- goto found;
+ if (high)
+ {
+ /* Emit "ldah r, high(r). */
+ set_tok_const (newtok[1], high);
+ assemble_tokens ("ldah", newtok, 3, 0);
+ basereg = targreg;
+ set_tok_preg (newtok[2], basereg);
+ }
+
+ if ((low && !poffset) || (!poffset && basereg != targreg))
+ {
+ /* Emit "lda r, low(base)". */
+ set_tok_const (newtok[1], low);
+ assemble_tokens ("lda", newtok, 3, 0);
+ basereg = targreg;
+ low = 0;
+ }
+
+ if (poffset)
+ set_tok_const (*poffset, low);
+ *pbasereg = basereg;
}
- as_warn (_("frame reg expected, using $%d."), framereg);
-found:
- note_gpreg (framereg);
- return framereg;
+ return emit_lituse;
}
-/* This is called before the symbol table is processed. In order to
- work with gcc when using mips-tfile, we must keep all local labels.
- However, in other cases, we want to discard them. If we were
- called with -g, but we didn't see any debugging information, it may
- mean that gcc is smuggling debugging information through to
- mips-tfile, in which case we must generate all local labels. */
-
-#ifdef OBJ_ECOFF
+/* The lda macro differs from the lda instruction in that it handles
+ most simple expressions, particularly symbol address loads and
+ large constants. */
-void
-alpha_frob_file_before_adjust ()
+static void
+emit_lda (const expressionS *tok,
+ int ntok,
+ const void * unused ATTRIBUTE_UNUSED)
{
- if (alpha_debug != 0
- && ! ecoff_debugging_seen)
- flag_keep_locals = 1;
-}
+ int basereg;
-#endif /* OBJ_ECOFF */
-\f
-static struct alpha_reloc_tag *
-get_alpha_reloc_tag (sequence)
- long sequence;
-{
- char buffer[ALPHA_RELOC_DIGITS];
- struct alpha_reloc_tag *info;
+ if (ntok == 2)
+ basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register);
+ else
+ basereg = tok[2].X_add_number;
- sprintf (buffer, "!%ld", sequence);
+ (void) load_expression (tok[0].X_add_number, &tok[1], &basereg, NULL, "lda");
+}
- info = (struct alpha_reloc_tag *) hash_find (alpha_literal_hash, buffer);
- if (! info)
- {
- size_t len = strlen (buffer);
- const char *errmsg;
+/* The ldah macro differs from the ldah instruction in that it has $31
+ as an implied base register. */
- info = (struct alpha_reloc_tag *)
- xcalloc (sizeof (struct alpha_reloc_tag) + len, 1);
+static void
+emit_ldah (const expressionS *tok,
+ int ntok ATTRIBUTE_UNUSED,
+ const void * unused ATTRIBUTE_UNUSED)
+{
+ expressionS newtok[3];
- info->segment = now_seg;
- info->sequence = sequence;
- strcpy (info->string, buffer);
- errmsg = hash_insert (alpha_literal_hash, info->string, (PTR) info);
- if (errmsg)
- as_fatal (errmsg);
- }
+ newtok[0] = tok[0];
+ newtok[1] = tok[1];
+ set_tok_preg (newtok[2], AXP_REG_ZERO);
- return info;
+ assemble_tokens ("ldah", newtok, 3, 0);
}
-/* Before the relocations are written, reorder them, so that user
- supplied !lituse relocations follow the appropriate !literal
- relocations, and similarly for !gpdisp relocations. */
-
-void
-alpha_adjust_symtab ()
-{
- if (alpha_literal_hash)
- bfd_map_over_sections (stdoutput, alpha_adjust_symtab_relocs, NULL);
-}
+/* Called internally to handle all alignment needs. This takes care
+ of eliding calls to frag_align if'n the cached current alignment
+ says we've already got it, as well as taking care of the auto-align
+ feature wrt labels. */
static void
-alpha_adjust_symtab_relocs (abfd, sec, ptr)
- bfd *abfd ATTRIBUTE_UNUSED;
- asection *sec;
- PTR ptr ATTRIBUTE_UNUSED;
+alpha_align (int n,
+ char *pfill,
+ symbolS *label,
+ int force ATTRIBUTE_UNUSED)
{
- segment_info_type *seginfo = seg_info (sec);
- fixS **prevP;
- fixS *fixp;
- fixS *next;
- fixS *slave;
- unsigned long n_slaves = 0;
-
- /* If seginfo is NULL, we did not create this section; don't do
- anything with it. By using a pointer to a pointer, we can update
- the links in place. */
- if (seginfo == NULL)
+ if (alpha_current_align >= n)
return;
- /* If there are no relocations, skip the section. */
- if (! seginfo->fix_root)
- return;
+ if (pfill == NULL)
+ {
+ if (subseg_text_p (now_seg))
+ frag_align_code (n, 0);
+ else
+ frag_align (n, 0, 0);
+ }
+ else
+ frag_align (n, *pfill, 0);
- /* First rebuild the fixup chain without the expicit lituse and
- gpdisp_lo16 relocs. */
- prevP = &seginfo->fix_root;
- for (fixp = seginfo->fix_root; fixp; fixp = next)
+ alpha_current_align = n;
+
+ if (label != NULL && S_GET_SEGMENT (label) == now_seg)
{
- next = fixp->fx_next;
- fixp->fx_next = (fixS *) 0;
+ symbol_set_frag (label, frag_now);
+ S_SET_VALUE (label, (valueT) frag_now_fix ());
+ }
- switch (fixp->fx_r_type)
- {
- case BFD_RELOC_ALPHA_LITUSE:
- n_slaves++;
- if (fixp->tc_fix_data.info->n_master == 0)
- as_bad_where (fixp->fx_file, fixp->fx_line,
- _("No !literal!%ld was found"),
- fixp->tc_fix_data.info->sequence);
- break;
+ record_alignment (now_seg, n);
- case BFD_RELOC_ALPHA_GPDISP_LO16:
- n_slaves++;
- if (fixp->tc_fix_data.info->n_master == 0)
- as_bad_where (fixp->fx_file, fixp->fx_line,
- _("No ldah !gpdisp!%ld was found"),
- fixp->tc_fix_data.info->sequence);
- break;
+ /* ??? If alpha_flag_relax && force && elf, record the requested alignment
+ in a reloc for the linker to see. */
+}
- default:
- *prevP = fixp;
- prevP = &fixp->fx_next;
- break;
- }
- }
+/* Actually output an instruction with its fixup. */
- /* If there were any dependent relocations, go and add them back to
- the chain. They are linked through the next_reloc field in
- reverse order, so as we go through the next_reloc chain, we
- effectively reverse the chain once again.
+static void
+emit_insn (struct alpha_insn *insn)
+{
+ char *f;
+ int i;
- Except if there is more than one !literal for a given sequence
- number. In that case, the programmer and/or compiler is not sure
- how control flows from literal to lituse, and we can't be sure to
- get the relaxation correct.
+ /* Take care of alignment duties. */
+ if (alpha_auto_align_on && alpha_current_align < 2)
+ alpha_align (2, (char *) NULL, alpha_insn_label, 0);
+ if (alpha_current_align > 2)
+ alpha_current_align = 2;
+ alpha_insn_label = NULL;
- ??? Well, actually we could, if there are enough lituses such that
- we can make each literal have at least one of each lituse type
- present. Not implemented.
+ /* Write out the instruction. */
+ f = frag_more (4);
+ md_number_to_chars (f, insn->insn, 4);
- Also suppress the optimization if the !literals/!lituses are spread
- in different segments. This can happen with "intersting" uses of
- inline assembly; examples are present in the Linux kernel semaphores. */
+#ifdef OBJ_ELF
+ dwarf2_emit_insn (4);
+#endif
- for (fixp = seginfo->fix_root; fixp; fixp = next)
+ /* Apply the fixups in order. */
+ for (i = 0; i < insn->nfixups; ++i)
{
- next = fixp->fx_next;
- switch (fixp->fx_r_type)
+ const struct alpha_operand *operand = (const struct alpha_operand *) 0;
+ struct alpha_fixup *fixup = &insn->fixups[i];
+ struct alpha_reloc_tag *info = NULL;
+ int size, pcrel;
+ fixS *fixP;
+
+ /* Some fixups are only used internally and so have no howto. */
+ if ((int) fixup->reloc < 0)
{
- case BFD_RELOC_ALPHA_ELF_LITERAL:
- if (fixp->tc_fix_data.info->n_master == 1
- && ! fixp->tc_fix_data.info->multi_section_p)
+ operand = &alpha_operands[-(int) fixup->reloc];
+ size = 4;
+ pcrel = ((operand->flags & AXP_OPERAND_RELATIVE) != 0);
+ }
+ else if (fixup->reloc > BFD_RELOC_UNUSED
+ || fixup->reloc == BFD_RELOC_ALPHA_GPDISP_HI16
+ || fixup->reloc == BFD_RELOC_ALPHA_GPDISP_LO16)
+ {
+ size = 2;
+ pcrel = 0;
+ }
+ else
+ {
+ reloc_howto_type *reloc_howto =
+ bfd_reloc_type_lookup (stdoutput,
+ (bfd_reloc_code_real_type) fixup->reloc);
+ gas_assert (reloc_howto);
+
+ size = bfd_get_reloc_size (reloc_howto);
+
+ switch (fixup->reloc)
{
- for (slave = fixp->tc_fix_data.info->slaves;
- slave != (fixS *) 0;
- slave = slave->tc_fix_data.next_reloc)
- {
- slave->fx_next = fixp->fx_next;
- fixp->fx_next = slave;
- }
+#ifdef OBJ_EVAX
+ case BFD_RELOC_ALPHA_NOP:
+ case BFD_RELOC_ALPHA_BSR:
+ case BFD_RELOC_ALPHA_LDA:
+ case BFD_RELOC_ALPHA_BOH:
+ break;
+#endif
+ default:
+ gas_assert (size >= 1 && size <= 4);
}
+
+ pcrel = reloc_howto->pc_relative;
+ }
+
+ fixP = fix_new_exp (frag_now, f - frag_now->fr_literal, size,
+ &fixup->exp, pcrel, (bfd_reloc_code_real_type) fixup->reloc);
+
+ /* Turn off complaints that the addend is too large for some fixups,
+ and copy in the sequence number for the explicit relocations. */
+ switch (fixup->reloc)
+ {
+ case BFD_RELOC_ALPHA_HINT:
+ case BFD_RELOC_GPREL32:
+ case BFD_RELOC_GPREL16:
+ case BFD_RELOC_ALPHA_GPREL_HI16:
+ case BFD_RELOC_ALPHA_GPREL_LO16:
+ case BFD_RELOC_ALPHA_GOTDTPREL16:
+ case BFD_RELOC_ALPHA_DTPREL_HI16:
+ case BFD_RELOC_ALPHA_DTPREL_LO16:
+ case BFD_RELOC_ALPHA_DTPREL16:
+ case BFD_RELOC_ALPHA_GOTTPREL16:
+ case BFD_RELOC_ALPHA_TPREL_HI16:
+ case BFD_RELOC_ALPHA_TPREL_LO16:
+ case BFD_RELOC_ALPHA_TPREL16:
+ fixP->fx_no_overflow = 1;
break;
case BFD_RELOC_ALPHA_GPDISP_HI16:
- if (fixp->tc_fix_data.info->n_slaves == 0)
- as_bad_where (fixp->fx_file, fixp->fx_line,
- _("No lda !gpdisp!%ld was found"),
- fixp->tc_fix_data.info->sequence);
- else
+ fixP->fx_no_overflow = 1;
+ fixP->fx_addsy = section_symbol (now_seg);
+ fixP->fx_offset = 0;
+
+ info = get_alpha_reloc_tag (insn->sequence);
+ if (++info->n_master > 1)
+ as_bad (_("too many ldah insns for !gpdisp!%ld"), insn->sequence);
+ if (info->segment != now_seg)
+ as_bad (_("both insns for !gpdisp!%ld must be in the same section"),
+ insn->sequence);
+ fixP->tc_fix_data.info = info;
+ break;
+
+ case BFD_RELOC_ALPHA_GPDISP_LO16:
+ fixP->fx_no_overflow = 1;
+
+ info = get_alpha_reloc_tag (insn->sequence);
+ if (++info->n_slaves > 1)
+ as_bad (_("too many lda insns for !gpdisp!%ld"), insn->sequence);
+ if (info->segment != now_seg)
+ as_bad (_("both insns for !gpdisp!%ld must be in the same section"),
+ insn->sequence);
+ fixP->tc_fix_data.info = info;
+ info->slaves = fixP;
+ break;
+
+ case BFD_RELOC_ALPHA_LITERAL:
+ case BFD_RELOC_ALPHA_ELF_LITERAL:
+ fixP->fx_no_overflow = 1;
+
+ if (insn->sequence == 0)
+ break;
+ info = get_alpha_reloc_tag (insn->sequence);
+ info->master = fixP;
+ info->n_master++;
+ if (info->segment != now_seg)
+ info->multi_section_p = 1;
+ fixP->tc_fix_data.info = info;
+ break;
+
+#ifdef RELOC_OP_P
+ case DUMMY_RELOC_LITUSE_ADDR:
+ fixP->fx_offset = LITUSE_ALPHA_ADDR;
+ goto do_lituse;
+ case DUMMY_RELOC_LITUSE_BASE:
+ fixP->fx_offset = LITUSE_ALPHA_BASE;
+ goto do_lituse;
+ case DUMMY_RELOC_LITUSE_BYTOFF:
+ fixP->fx_offset = LITUSE_ALPHA_BYTOFF;
+ goto do_lituse;
+ case DUMMY_RELOC_LITUSE_JSR:
+ fixP->fx_offset = LITUSE_ALPHA_JSR;
+ goto do_lituse;
+ case DUMMY_RELOC_LITUSE_TLSGD:
+ fixP->fx_offset = LITUSE_ALPHA_TLSGD;
+ goto do_lituse;
+ case DUMMY_RELOC_LITUSE_TLSLDM:
+ fixP->fx_offset = LITUSE_ALPHA_TLSLDM;
+ goto do_lituse;
+ case DUMMY_RELOC_LITUSE_JSRDIRECT:
+ fixP->fx_offset = LITUSE_ALPHA_JSRDIRECT;
+ goto do_lituse;
+ do_lituse:
+ fixP->fx_addsy = section_symbol (now_seg);
+ fixP->fx_r_type = BFD_RELOC_ALPHA_LITUSE;
+
+ info = get_alpha_reloc_tag (insn->sequence);
+ if (fixup->reloc == DUMMY_RELOC_LITUSE_TLSGD)
+ info->saw_lu_tlsgd = 1;
+ else if (fixup->reloc == DUMMY_RELOC_LITUSE_TLSLDM)
+ info->saw_lu_tlsldm = 1;
+ if (++info->n_slaves > 1)
{
- slave = fixp->tc_fix_data.info->slaves;
- slave->fx_next = next;
- fixp->fx_next = slave;
+ if (info->saw_lu_tlsgd)
+ as_bad (_("too many lituse insns for !lituse_tlsgd!%ld"),
+ insn->sequence);
+ else if (info->saw_lu_tlsldm)
+ as_bad (_("too many lituse insns for !lituse_tlsldm!%ld"),
+ insn->sequence);
}
+ fixP->tc_fix_data.info = info;
+ fixP->tc_fix_data.next_reloc = info->slaves;
+ info->slaves = fixP;
+ if (info->segment != now_seg)
+ info->multi_section_p = 1;
+ break;
+
+ case BFD_RELOC_ALPHA_TLSGD:
+ fixP->fx_no_overflow = 1;
+
+ if (insn->sequence == 0)
+ break;
+ info = get_alpha_reloc_tag (insn->sequence);
+ if (info->saw_tlsgd)
+ as_bad (_("duplicate !tlsgd!%ld"), insn->sequence);
+ else if (info->saw_tlsldm)
+ as_bad (_("sequence number in use for !tlsldm!%ld"),
+ insn->sequence);
+ else
+ info->saw_tlsgd = 1;
+ fixP->tc_fix_data.info = info;
+ break;
+
+ case BFD_RELOC_ALPHA_TLSLDM:
+ fixP->fx_no_overflow = 1;
+
+ if (insn->sequence == 0)
+ break;
+ info = get_alpha_reloc_tag (insn->sequence);
+ if (info->saw_tlsldm)
+ as_bad (_("duplicate !tlsldm!%ld"), insn->sequence);
+ else if (info->saw_tlsgd)
+ as_bad (_("sequence number in use for !tlsgd!%ld"),
+ insn->sequence);
+ else
+ info->saw_tlsldm = 1;
+ fixP->tc_fix_data.info = info;
+ break;
+#endif
+#ifdef OBJ_EVAX
+ case BFD_RELOC_ALPHA_NOP:
+ case BFD_RELOC_ALPHA_LDA:
+ case BFD_RELOC_ALPHA_BSR:
+ case BFD_RELOC_ALPHA_BOH:
+ info = get_alpha_reloc_tag (next_sequence_num--);
+ fixP->tc_fix_data.info = info;
+ fixP->tc_fix_data.info->sym = fixup->xtrasym;
+ fixP->tc_fix_data.info->psym = fixup->procsym;
break;
+#endif
default:
+ if ((int) fixup->reloc < 0)
+ {
+ if (operand->flags & AXP_OPERAND_NOOVERFLOW)
+ fixP->fx_no_overflow = 1;
+ }
break;
}
}
}
-\f
-#ifdef DEBUG_ALPHA
-static void
-debug_exp (tok, ntok)
- expressionS tok[];
- int ntok;
-{
- int i;
- fprintf (stderr, "debug_exp: %d tokens", ntok);
- for (i = 0; i < ntok; i++)
+/* Insert an operand value into an instruction. */
+
+static unsigned
+insert_operand (unsigned insn,
+ const struct alpha_operand *operand,
+ offsetT val,
+ char *file,
+ unsigned line)
+{
+ if (operand->bits != 32 && !(operand->flags & AXP_OPERAND_NOOVERFLOW))
{
- expressionS *t = &tok[i];
- const char *name;
- switch (t->X_op)
+ offsetT min, max;
+
+ if (operand->flags & AXP_OPERAND_SIGNED)
{
- default: name = "unknown"; break;
- case O_illegal: name = "O_illegal"; break;
- case O_absent: name = "O_absent"; break;
- case O_constant: name = "O_constant"; break;
- case O_symbol: name = "O_symbol"; break;
- case O_symbol_rva: name = "O_symbol_rva"; break;
- case O_register: name = "O_register"; break;
- case O_big: name = "O_big"; break;
- case O_uminus: name = "O_uminus"; break;
- case O_bit_not: name = "O_bit_not"; break;
- case O_logical_not: name = "O_logical_not"; break;
- case O_multiply: name = "O_multiply"; break;
- case O_divide: name = "O_divide"; break;
- case O_modulus: name = "O_modulus"; break;
- case O_left_shift: name = "O_left_shift"; break;
- case O_right_shift: name = "O_right_shift"; break;
- case O_bit_inclusive_or: name = "O_bit_inclusive_or"; break;
- case O_bit_or_not: name = "O_bit_or_not"; break;
- case O_bit_exclusive_or: name = "O_bit_exclusive_or"; break;
- case O_bit_and: name = "O_bit_and"; break;
- case O_add: name = "O_add"; break;
- case O_subtract: name = "O_subtract"; break;
- case O_eq: name = "O_eq"; break;
- case O_ne: name = "O_ne"; break;
- case O_lt: name = "O_lt"; break;
- case O_le: name = "O_le"; break;
- case O_ge: name = "O_ge"; break;
- case O_gt: name = "O_gt"; break;
- case O_logical_and: name = "O_logical_and"; break;
- case O_logical_or: name = "O_logical_or"; break;
- case O_index: name = "O_index"; break;
- case O_pregister: name = "O_pregister"; break;
- case O_cpregister: name = "O_cpregister"; break;
- case O_literal: name = "O_literal"; break;
- case O_lituse_base: name = "O_lituse_base"; break;
- case O_lituse_bytoff: name = "O_lituse_bytoff"; break;
- case O_lituse_jsr: name = "O_lituse_jsr"; break;
- case O_gpdisp: name = "O_gpdisp"; break;
- case O_gprelhigh: name = "O_gprelhigh"; break;
- case O_gprellow: name = "O_gprellow"; break;
- case O_gprel: name = "O_gprel"; break;
- case O_md11: name = "O_md11"; break;
- case O_md12: name = "O_md12"; break;
- case O_md13: name = "O_md13"; break;
- case O_md14: name = "O_md14"; break;
- case O_md15: name = "O_md15"; break;
- case O_md16: name = "O_md16"; break;
+ max = (1 << (operand->bits - 1)) - 1;
+ min = -(1 << (operand->bits - 1));
+ }
+ else
+ {
+ max = (1 << operand->bits) - 1;
+ min = 0;
}
- fprintf (stderr, ", %s(%s, %s, %d)", name,
- (t->X_add_symbol) ? S_GET_NAME (t->X_add_symbol) : "--",
- (t->X_op_symbol) ? S_GET_NAME (t->X_op_symbol) : "--",
- (int) t->X_add_number);
+ if (val < min || val > max)
+ as_warn_value_out_of_range (_("operand"), val, min, max, file, line);
}
- fprintf (stderr, "\n");
- fflush (stderr);
-}
-#endif
-/* Parse the arguments to an opcode. */
+ if (operand->insert)
+ {
+ const char *errmsg = NULL;
-static int
-tokenize_arguments (str, tok, ntok)
- char *str;
- expressionS tok[];
- int ntok;
-{
- expressionS *end_tok = tok + ntok;
- char *old_input_line_pointer;
- int saw_comma = 0, saw_arg = 0;
-#ifdef DEBUG_ALPHA
- expressionS *orig_tok = tok;
-#endif
- char *p;
- const struct alpha_reloc_op_tag *r;
- int c, i;
- size_t len;
- int reloc_found_p = 0;
+ insn = (*operand->insert) (insn, val, &errmsg);
+ if (errmsg)
+ as_warn ("%s", errmsg);
+ }
+ else
+ insn |= ((val & ((1 << operand->bits) - 1)) << operand->shift);
- memset (tok, 0, sizeof (*tok) * ntok);
+ return insn;
+}
- /* Save and restore input_line_pointer around this function */
- old_input_line_pointer = input_line_pointer;
- input_line_pointer = str;
+/* Turn an opcode description and a set of arguments into
+ an instruction and a fixup. */
-#ifdef RELOC_OP_P
- /* ??? Wrest control of ! away from the regular expression parser. */
- is_end_of_line[(unsigned char) '!'] = 1;
-#endif
+static void
+assemble_insn (const struct alpha_opcode *opcode,
+ const expressionS *tok,
+ int ntok,
+ struct alpha_insn *insn,
+ extended_bfd_reloc_code_real_type reloc)
+{
+ const struct alpha_operand *reloc_operand = NULL;
+ const expressionS *reloc_exp = NULL;
+ const unsigned char *argidx;
+ unsigned image;
+ int tokidx = 0;
- while (tok < end_tok && *input_line_pointer)
+ memset (insn, 0, sizeof (*insn));
+ image = opcode->opcode;
+
+ for (argidx = opcode->operands; *argidx; ++argidx)
{
- SKIP_WHITESPACE ();
- switch (*input_line_pointer)
+ const struct alpha_operand *operand = &alpha_operands[*argidx];
+ const expressionS *t = (const expressionS *) 0;
+
+ if (operand->flags & AXP_OPERAND_FAKE)
{
- case '\0':
- goto fini;
+ /* Fake operands take no value and generate no fixup. */
+ image = insert_operand (image, operand, 0, NULL, 0);
+ continue;
+ }
-#ifdef RELOC_OP_P
- case '!':
- /* A relocation operand can be placed after the normal operand on an
- assembly language statement, and has the following form:
- !relocation_type!sequence_number. */
- if (reloc_found_p)
- { /* only support one relocation op per insn */
- as_bad (_("More than one relocation op per insn"));
- goto err_report;
+ if (tokidx >= ntok)
+ {
+ switch (operand->flags & AXP_OPERAND_OPTIONAL_MASK)
+ {
+ case AXP_OPERAND_DEFAULT_FIRST:
+ t = &tok[0];
+ break;
+ case AXP_OPERAND_DEFAULT_SECOND:
+ t = &tok[1];
+ break;
+ case AXP_OPERAND_DEFAULT_ZERO:
+ {
+ static expressionS zero_exp;
+ t = &zero_exp;
+ zero_exp.X_op = O_constant;
+ zero_exp.X_unsigned = 1;
+ }
+ break;
+ default:
+ abort ();
}
+ }
+ else
+ t = &tok[tokidx++];
- if (!saw_arg)
- goto err;
+ switch (t->X_op)
+ {
+ case O_register:
+ case O_pregister:
+ case O_cpregister:
+ image = insert_operand (image, operand, regno (t->X_add_number),
+ NULL, 0);
+ break;
- ++input_line_pointer;
- SKIP_WHITESPACE ();
- p = input_line_pointer;
- c = get_symbol_end ();
+ case O_constant:
+ image = insert_operand (image, operand, t->X_add_number, NULL, 0);
+ gas_assert (reloc_operand == NULL);
+ reloc_operand = operand;
+ reloc_exp = t;
+ break;
- /* Parse !relocation_type */
- len = input_line_pointer - p;
- if (len == 0)
- {
- as_bad (_("No relocation operand"));
- goto err_report;
- }
+ default:
+ /* This is only 0 for fields that should contain registers,
+ which means this pattern shouldn't have matched. */
+ if (operand->default_reloc == 0)
+ abort ();
- r = &alpha_reloc_op[0];
- for (i = alpha_num_reloc_op - 1; i >= 0; i--, r++)
- if (len == r->length && memcmp (p, r->name, len) == 0)
- break;
- if (i < 0)
+ /* There is one special case for which an insn receives two
+ relocations, and thus the user-supplied reloc does not
+ override the operand reloc. */
+ if (operand->default_reloc == BFD_RELOC_ALPHA_HINT)
{
- as_bad (_("Unknown relocation operand: !%s"), p);
- goto err_report;
- }
+ struct alpha_fixup *fixup;
- *input_line_pointer = c;
- SKIP_WHITESPACE ();
- if (*input_line_pointer != '!')
- {
- if (r->require_seq)
- {
- as_bad (_("no sequence number after !%s"), p);
- goto err_report;
- }
+ if (insn->nfixups >= MAX_INSN_FIXUPS)
+ as_fatal (_("too many fixups"));
- tok->X_add_number = 0;
+ fixup = &insn->fixups[insn->nfixups++];
+ fixup->exp = *t;
+ fixup->reloc = BFD_RELOC_ALPHA_HINT;
}
else
{
- if (! r->allow_seq)
- {
- as_bad (_("!%s does not use a sequence number"), p);
- goto err_report;
- }
-
- input_line_pointer++;
+ if (reloc == BFD_RELOC_UNUSED)
+ reloc = operand->default_reloc;
- /* Parse !sequence_number */
- expression (tok);
- if (tok->X_op != O_constant || tok->X_add_number <= 0)
- {
- as_bad (_("Bad sequence number: !%s!%s"),
- r->name, input_line_pointer);
- goto err_report;
- }
+ gas_assert (reloc_operand == NULL);
+ reloc_operand = operand;
+ reloc_exp = t;
}
-
- tok->X_op = r->op;
- reloc_found_p = 1;
- ++tok;
- break;
-#endif /* RELOC_OP_P */
-
- case ',':
- ++input_line_pointer;
- if (saw_comma || !saw_arg)
- goto err;
- saw_comma = 1;
break;
+ }
+ }
- case '(':
- {
- char *hold = input_line_pointer++;
+ if (reloc != BFD_RELOC_UNUSED)
+ {
+ struct alpha_fixup *fixup;
- /* First try for parenthesized register ... */
- expression (tok);
- if (*input_line_pointer == ')' && tok->X_op == O_register)
- {
- tok->X_op = (saw_comma ? O_cpregister : O_pregister);
- saw_comma = 0;
- saw_arg = 1;
- ++input_line_pointer;
- ++tok;
- break;
- }
+ if (insn->nfixups >= MAX_INSN_FIXUPS)
+ as_fatal (_("too many fixups"));
- /* ... then fall through to plain expression */
- input_line_pointer = hold;
- }
+ /* ??? My but this is hacky. But the OSF/1 assembler uses the same
+ relocation tag for both ldah and lda with gpdisp. Choose the
+ correct internal relocation based on the opcode. */
+ if (reloc == BFD_RELOC_ALPHA_GPDISP)
+ {
+ if (strcmp (opcode->name, "ldah") == 0)
+ reloc = BFD_RELOC_ALPHA_GPDISP_HI16;
+ else if (strcmp (opcode->name, "lda") == 0)
+ reloc = BFD_RELOC_ALPHA_GPDISP_LO16;
+ else
+ as_bad (_("invalid relocation for instruction"));
+ }
- default:
- if (saw_arg && !saw_comma)
- goto err;
-
- expression (tok);
- if (tok->X_op == O_illegal || tok->X_op == O_absent)
- goto err;
-
- saw_comma = 0;
- saw_arg = 1;
- ++tok;
- break;
+ /* If this is a real relocation (as opposed to a lituse hint), then
+ the relocation width should match the operand width.
+ Take care of -MDISP in operand table. */
+ else if (reloc < BFD_RELOC_UNUSED && reloc > 0)
+ {
+ reloc_howto_type *reloc_howto
+ = bfd_reloc_type_lookup (stdoutput,
+ (bfd_reloc_code_real_type) reloc);
+ if (reloc_operand == NULL
+ || reloc_howto->bitsize != reloc_operand->bits)
+ {
+ as_bad (_("invalid relocation for field"));
+ return;
+ }
}
+
+ fixup = &insn->fixups[insn->nfixups++];
+ if (reloc_exp)
+ fixup->exp = *reloc_exp;
+ else
+ fixup->exp.X_op = O_absent;
+ fixup->reloc = reloc;
}
-fini:
- if (saw_comma)
- goto err;
- input_line_pointer = old_input_line_pointer;
+ insn->insn = image;
+}
-#ifdef DEBUG_ALPHA
- debug_exp (orig_tok, ntok - (end_tok - tok));
-#endif
-#ifdef RELOC_OP_P
- is_end_of_line[(unsigned char) '!'] = 0;
-#endif
+/* Handle all "simple" integer register loads -- ldq, ldq_l, ldq_u,
+ etc. They differ from the real instructions in that they do simple
+ expressions like the lda macro. */
- return ntok - (end_tok - tok);
+static void
+emit_ir_load (const expressionS *tok,
+ int ntok,
+ const void * opname)
+{
+ int basereg;
+ long lituse;
+ expressionS newtok[3];
+ struct alpha_insn insn;
+ const char *symname
+ = tok[1].X_add_symbol ? S_GET_NAME (tok[1].X_add_symbol): "";
+ int symlen = strlen (symname);
-err:
-#ifdef RELOC_OP_P
- is_end_of_line[(unsigned char) '!'] = 0;
-#endif
- input_line_pointer = old_input_line_pointer;
- return TOKENIZE_ERROR;
+ if (ntok == 2)
+ basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register);
+ else
+ basereg = tok[2].X_add_number;
-err_report:
-#ifdef RELOC_OP_P
- is_end_of_line[(unsigned char) '!'] = 0;
-#endif
- input_line_pointer = old_input_line_pointer;
- return TOKENIZE_ERROR_REPORT;
+ lituse = load_expression (tok[0].X_add_number, &tok[1],
+ &basereg, &newtok[1], (const char *) opname);
+
+ if (basereg == alpha_gp_register &&
+ (symlen > 4 && strcmp (&symname [symlen - 4], "..lk") == 0))
+ return;
+
+ newtok[0] = tok[0];
+ set_tok_preg (newtok[2], basereg);
+
+ assemble_tokens_to_insn ((const char *) opname, newtok, 3, &insn);
+
+ if (lituse)
+ {
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
+ insn.fixups[insn.nfixups].exp.X_op = O_absent;
+ insn.nfixups++;
+ insn.sequence = lituse;
+ }
+
+ emit_insn (&insn);
}
-/* Search forward through all variants of an opcode looking for a
- syntax match. */
+/* Handle fp register loads, and both integer and fp register stores.
+ Again, we handle simple expressions. */
-static const struct alpha_opcode *
-find_opcode_match (first_opcode, tok, pntok, pcpumatch)
- const struct alpha_opcode *first_opcode;
- const expressionS *tok;
- int *pntok;
- int *pcpumatch;
+static void
+emit_loadstore (const expressionS *tok,
+ int ntok,
+ const void * opname)
{
- const struct alpha_opcode *opcode = first_opcode;
- int ntok = *pntok;
- int got_cpu_match = 0;
+ int basereg;
+ long lituse;
+ expressionS newtok[3];
+ struct alpha_insn insn;
- do
+ if (ntok == 2)
+ basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register);
+ else
+ basereg = tok[2].X_add_number;
+
+ if (tok[1].X_op != O_constant || !range_signed_16 (tok[1].X_add_number))
{
- const unsigned char *opidx;
- int tokidx = 0;
+ if (alpha_noat_on)
+ as_bad (_("macro requires $at register while noat in effect"));
- /* Don't match opcodes that don't exist on this architecture */
- if (!(opcode->flags & alpha_target))
- goto match_failed;
+ lituse = load_expression (AXP_REG_AT, &tok[1],
+ &basereg, &newtok[1], (const char *) opname);
+ }
+ else
+ {
+ newtok[1] = tok[1];
+ lituse = 0;
+ }
- got_cpu_match = 1;
+ newtok[0] = tok[0];
+ set_tok_preg (newtok[2], basereg);
- for (opidx = opcode->operands; *opidx; ++opidx)
- {
- const struct alpha_operand *operand = &alpha_operands[*opidx];
+ assemble_tokens_to_insn ((const char *) opname, newtok, 3, &insn);
- /* only take input from real operands */
- if (operand->flags & AXP_OPERAND_FAKE)
- continue;
+ if (lituse)
+ {
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
+ insn.fixups[insn.nfixups].exp.X_op = O_absent;
+ insn.nfixups++;
+ insn.sequence = lituse;
+ }
- /* when we expect input, make sure we have it */
- if (tokidx >= ntok)
- {
- if ((operand->flags & AXP_OPERAND_OPTIONAL_MASK) == 0)
- goto match_failed;
- continue;
- }
+ emit_insn (&insn);
+}
- /* match operand type with expression type */
- switch (operand->flags & AXP_OPERAND_TYPECHECK_MASK)
- {
- case AXP_OPERAND_IR:
- if (tok[tokidx].X_op != O_register
- || !is_ir_num (tok[tokidx].X_add_number))
- goto match_failed;
- break;
- case AXP_OPERAND_FPR:
- if (tok[tokidx].X_op != O_register
- || !is_fpr_num (tok[tokidx].X_add_number))
- goto match_failed;
- break;
- case AXP_OPERAND_IR | AXP_OPERAND_PARENS:
- if (tok[tokidx].X_op != O_pregister
- || !is_ir_num (tok[tokidx].X_add_number))
- goto match_failed;
- break;
- case AXP_OPERAND_IR | AXP_OPERAND_PARENS | AXP_OPERAND_COMMA:
- if (tok[tokidx].X_op != O_cpregister
- || !is_ir_num (tok[tokidx].X_add_number))
- goto match_failed;
- break;
+/* Load a half-word or byte as an unsigned value. */
- case AXP_OPERAND_RELATIVE:
- case AXP_OPERAND_SIGNED:
- case AXP_OPERAND_UNSIGNED:
- switch (tok[tokidx].X_op)
- {
- case O_illegal:
- case O_absent:
- case O_register:
- case O_pregister:
- case O_cpregister:
- goto match_failed;
+static void
+emit_ldXu (const expressionS *tok,
+ int ntok,
+ const void * vlgsize)
+{
+ if (alpha_target & AXP_OPCODE_BWX)
+ emit_ir_load (tok, ntok, ldXu_op[(long) vlgsize]);
+ else
+ {
+ expressionS newtok[3];
+ struct alpha_insn insn;
+ int basereg;
+ long lituse;
- default:
- break;
- }
- break;
+ if (alpha_noat_on)
+ as_bad (_("macro requires $at register while noat in effect"));
- default:
- /* everything else should have been fake */
- abort ();
- }
- ++tokidx;
+ if (ntok == 2)
+ basereg = (tok[1].X_op == O_constant
+ ? AXP_REG_ZERO : alpha_gp_register);
+ else
+ basereg = tok[2].X_add_number;
+
+ /* Emit "lda $at, exp". */
+ lituse = load_expression (AXP_REG_AT, &tok[1], &basereg, NULL, "lda");
+
+ /* Emit "ldq_u targ, 0($at)". */
+ newtok[0] = tok[0];
+ set_tok_const (newtok[1], 0);
+ set_tok_preg (newtok[2], basereg);
+ assemble_tokens_to_insn ("ldq_u", newtok, 3, &insn);
+
+ if (lituse)
+ {
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
+ insn.fixups[insn.nfixups].exp.X_op = O_absent;
+ insn.nfixups++;
+ insn.sequence = lituse;
}
- /* possible match -- did we use all of our input? */
- if (tokidx == ntok)
+ emit_insn (&insn);
+
+ /* Emit "extXl targ, $at, targ". */
+ set_tok_reg (newtok[1], basereg);
+ newtok[2] = newtok[0];
+ assemble_tokens_to_insn (extXl_op[(long) vlgsize], newtok, 3, &insn);
+
+ if (lituse)
{
- *pntok = ntok;
- return opcode;
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BYTOFF;
+ insn.fixups[insn.nfixups].exp.X_op = O_absent;
+ insn.nfixups++;
+ insn.sequence = lituse;
}
- match_failed:;
+ emit_insn (&insn);
}
- while (++opcode - alpha_opcodes < alpha_num_opcodes
- && !strcmp (opcode->name, first_opcode->name));
+}
- if (*pcpumatch)
- *pcpumatch = got_cpu_match;
+/* Load a half-word or byte as a signed value. */
- return NULL;
+static void
+emit_ldX (const expressionS *tok,
+ int ntok,
+ const void * vlgsize)
+{
+ emit_ldXu (tok, ntok, vlgsize);
+ assemble_tokens (sextX_op[(long) vlgsize], tok, 1, 1);
}
-/* Search forward through all variants of a macro looking for a syntax
- match. */
+/* Load an integral value from an unaligned address as an unsigned
+ value. */
-static const struct alpha_macro *
-find_macro_match (first_macro, tok, pntok)
- const struct alpha_macro *first_macro;
- const expressionS *tok;
- int *pntok;
+static void
+emit_uldXu (const expressionS *tok,
+ int ntok,
+ const void * vlgsize)
{
- const struct alpha_macro *macro = first_macro;
- int ntok = *pntok;
+ long lgsize = (long) vlgsize;
+ expressionS newtok[3];
- do
- {
- const enum alpha_macro_arg *arg = macro->argsets;
- int tokidx = 0;
+ if (alpha_noat_on)
+ as_bad (_("macro requires $at register while noat in effect"));
- while (*arg)
- {
- switch (*arg)
- {
- case MACRO_EOA:
- if (tokidx == ntok)
- return macro;
- else
- tokidx = 0;
- break;
+ /* Emit "lda $at, exp". */
+ memcpy (newtok, tok, sizeof (expressionS) * ntok);
+ newtok[0].X_add_number = AXP_REG_AT;
+ assemble_tokens ("lda", newtok, ntok, 1);
- /* index register */
- case MACRO_IR:
- if (tokidx >= ntok || tok[tokidx].X_op != O_register
- || !is_ir_num (tok[tokidx].X_add_number))
- goto match_failed;
- ++tokidx;
- break;
+ /* Emit "ldq_u $t9, 0($at)". */
+ set_tok_reg (newtok[0], AXP_REG_T9);
+ set_tok_const (newtok[1], 0);
+ set_tok_preg (newtok[2], AXP_REG_AT);
+ assemble_tokens ("ldq_u", newtok, 3, 1);
- /* parenthesized index register */
- case MACRO_PIR:
- if (tokidx >= ntok || tok[tokidx].X_op != O_pregister
- || !is_ir_num (tok[tokidx].X_add_number))
- goto match_failed;
- ++tokidx;
- break;
+ /* Emit "ldq_u $t10, size-1($at)". */
+ set_tok_reg (newtok[0], AXP_REG_T10);
+ set_tok_const (newtok[1], (1 << lgsize) - 1);
+ assemble_tokens ("ldq_u", newtok, 3, 1);
- /* optional parenthesized index register */
- case MACRO_OPIR:
- if (tokidx < ntok && tok[tokidx].X_op == O_pregister
- && is_ir_num (tok[tokidx].X_add_number))
- ++tokidx;
- break;
+ /* Emit "extXl $t9, $at, $t9". */
+ set_tok_reg (newtok[0], AXP_REG_T9);
+ set_tok_reg (newtok[1], AXP_REG_AT);
+ set_tok_reg (newtok[2], AXP_REG_T9);
+ assemble_tokens (extXl_op[lgsize], newtok, 3, 1);
- /* leading comma with a parenthesized index register */
- case MACRO_CPIR:
- if (tokidx >= ntok || tok[tokidx].X_op != O_cpregister
- || !is_ir_num (tok[tokidx].X_add_number))
- goto match_failed;
- ++tokidx;
- break;
+ /* Emit "extXh $t10, $at, $t10". */
+ set_tok_reg (newtok[0], AXP_REG_T10);
+ set_tok_reg (newtok[2], AXP_REG_T10);
+ assemble_tokens (extXh_op[lgsize], newtok, 3, 1);
- /* floating point register */
- case MACRO_FPR:
- if (tokidx >= ntok || tok[tokidx].X_op != O_register
- || !is_fpr_num (tok[tokidx].X_add_number))
- goto match_failed;
- ++tokidx;
- break;
+ /* Emit "or $t9, $t10, targ". */
+ set_tok_reg (newtok[0], AXP_REG_T9);
+ set_tok_reg (newtok[1], AXP_REG_T10);
+ newtok[2] = tok[0];
+ assemble_tokens ("or", newtok, 3, 1);
+}
- /* normal expression */
- case MACRO_EXP:
- if (tokidx >= ntok)
- goto match_failed;
- switch (tok[tokidx].X_op)
- {
- case O_illegal:
- case O_absent:
- case O_register:
- case O_pregister:
- case O_cpregister:
- case O_literal:
- case O_lituse_base:
- case O_lituse_bytoff:
- case O_lituse_jsr:
- case O_gpdisp:
- case O_gprelhigh:
- case O_gprellow:
- case O_gprel:
- goto match_failed;
+/* Load an integral value from an unaligned address as a signed value.
+ Note that quads should get funneled to the unsigned load since we
+ don't have to do the sign extension. */
- default:
- break;
- }
- ++tokidx;
- break;
+static void
+emit_uldX (const expressionS *tok,
+ int ntok,
+ const void * vlgsize)
+{
+ emit_uldXu (tok, ntok, vlgsize);
+ assemble_tokens (sextX_op[(long) vlgsize], tok, 1, 1);
+}
- match_failed:
- while (*arg != MACRO_EOA)
- ++arg;
- tokidx = 0;
- break;
- }
- ++arg;
- }
- }
- while (++macro - alpha_macros < alpha_num_macros
- && !strcmp (macro->name, first_macro->name));
+/* Implement the ldil macro. */
- return NULL;
+static void
+emit_ldil (const expressionS *tok,
+ int ntok,
+ const void * unused ATTRIBUTE_UNUSED)
+{
+ expressionS newtok[2];
+
+ memcpy (newtok, tok, sizeof (newtok));
+ newtok[1].X_add_number = sign_extend_32 (tok[1].X_add_number);
+
+ assemble_tokens ("lda", newtok, ntok, 1);
}
-/* Insert an operand value into an instruction. */
+/* Store a half-word or byte. */
-static unsigned
-insert_operand (insn, operand, val, file, line)
- unsigned insn;
- const struct alpha_operand *operand;
- offsetT val;
- char *file;
- unsigned line;
+static void
+emit_stX (const expressionS *tok,
+ int ntok,
+ const void * vlgsize)
{
- if (operand->bits != 32 && !(operand->flags & AXP_OPERAND_NOOVERFLOW))
+ int lgsize = (int) (long) vlgsize;
+
+ if (alpha_target & AXP_OPCODE_BWX)
+ emit_loadstore (tok, ntok, stX_op[lgsize]);
+ else
{
- offsetT min, max;
+ expressionS newtok[3];
+ struct alpha_insn insn;
+ int basereg;
+ long lituse;
- if (operand->flags & AXP_OPERAND_SIGNED)
- {
- max = (1 << (operand->bits - 1)) - 1;
- min = -(1 << (operand->bits - 1));
- }
+ if (alpha_noat_on)
+ as_bad (_("macro requires $at register while noat in effect"));
+
+ if (ntok == 2)
+ basereg = (tok[1].X_op == O_constant
+ ? AXP_REG_ZERO : alpha_gp_register);
else
+ basereg = tok[2].X_add_number;
+
+ /* Emit "lda $at, exp". */
+ lituse = load_expression (AXP_REG_AT, &tok[1], &basereg, NULL, "lda");
+
+ /* Emit "ldq_u $t9, 0($at)". */
+ set_tok_reg (newtok[0], AXP_REG_T9);
+ set_tok_const (newtok[1], 0);
+ set_tok_preg (newtok[2], basereg);
+ assemble_tokens_to_insn ("ldq_u", newtok, 3, &insn);
+
+ if (lituse)
{
- max = (1 << operand->bits) - 1;
- min = 0;
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
+ insn.fixups[insn.nfixups].exp.X_op = O_absent;
+ insn.nfixups++;
+ insn.sequence = lituse;
}
- if (val < min || val > max)
+ emit_insn (&insn);
+
+ /* Emit "insXl src, $at, $t10". */
+ newtok[0] = tok[0];
+ set_tok_reg (newtok[1], basereg);
+ set_tok_reg (newtok[2], AXP_REG_T10);
+ assemble_tokens_to_insn (insXl_op[lgsize], newtok, 3, &insn);
+
+ if (lituse)
{
- const char *err =
- _("operand out of range (%s not between %d and %d)");
- char buf[sizeof (val) * 3 + 2];
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BYTOFF;
+ insn.fixups[insn.nfixups].exp.X_op = O_absent;
+ insn.nfixups++;
+ insn.sequence = lituse;
+ }
- sprint_value (buf, val);
- if (file)
- as_warn_where (file, line, err, buf, min, max);
- else
- as_warn (err, buf, min, max);
+ emit_insn (&insn);
+
+ /* Emit "mskXl $t9, $at, $t9". */
+ set_tok_reg (newtok[0], AXP_REG_T9);
+ newtok[2] = newtok[0];
+ assemble_tokens_to_insn (mskXl_op[lgsize], newtok, 3, &insn);
+
+ if (lituse)
+ {
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BYTOFF;
+ insn.fixups[insn.nfixups].exp.X_op = O_absent;
+ insn.nfixups++;
+ insn.sequence = lituse;
}
- }
- if (operand->insert)
- {
- const char *errmsg = NULL;
+ emit_insn (&insn);
- insn = (*operand->insert) (insn, val, &errmsg);
- if (errmsg)
- as_warn (errmsg);
- }
- else
- insn |= ((val & ((1 << operand->bits) - 1)) << operand->shift);
+ /* Emit "or $t9, $t10, $t9". */
+ set_tok_reg (newtok[1], AXP_REG_T10);
+ assemble_tokens ("or", newtok, 3, 1);
- return insn;
+ /* Emit "stq_u $t9, 0($at). */
+ set_tok_const(newtok[1], 0);
+ set_tok_preg (newtok[2], AXP_REG_AT);
+ assemble_tokens_to_insn ("stq_u", newtok, 3, &insn);
+
+ if (lituse)
+ {
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
+ insn.fixups[insn.nfixups].exp.X_op = O_absent;
+ insn.nfixups++;
+ insn.sequence = lituse;
+ }
+
+ emit_insn (&insn);
+ }
}
-/*
- * Turn an opcode description and a set of arguments into
- * an instruction and a fixup.
- */
+/* Store an integer to an unaligned address. */
static void
-assemble_insn (opcode, tok, ntok, insn, reloc)
- const struct alpha_opcode *opcode;
- const expressionS *tok;
- int ntok;
- struct alpha_insn *insn;
- bfd_reloc_code_real_type reloc;
+emit_ustX (const expressionS *tok,
+ int ntok,
+ const void * vlgsize)
{
- const struct alpha_operand *reloc_operand = NULL;
- const expressionS *reloc_exp = NULL;
- const unsigned char *argidx;
- unsigned image;
- int tokidx = 0;
-
- memset (insn, 0, sizeof (*insn));
- image = opcode->opcode;
+ int lgsize = (int) (long) vlgsize;
+ expressionS newtok[3];
- for (argidx = opcode->operands; *argidx; ++argidx)
- {
- const struct alpha_operand *operand = &alpha_operands[*argidx];
- const expressionS *t = (const expressionS *) 0;
+ /* Emit "lda $at, exp". */
+ memcpy (newtok, tok, sizeof (expressionS) * ntok);
+ newtok[0].X_add_number = AXP_REG_AT;
+ assemble_tokens ("lda", newtok, ntok, 1);
- if (operand->flags & AXP_OPERAND_FAKE)
- {
- /* fake operands take no value and generate no fixup */
- image = insert_operand (image, operand, 0, NULL, 0);
- continue;
- }
+ /* Emit "ldq_u $9, 0($at)". */
+ set_tok_reg (newtok[0], AXP_REG_T9);
+ set_tok_const (newtok[1], 0);
+ set_tok_preg (newtok[2], AXP_REG_AT);
+ assemble_tokens ("ldq_u", newtok, 3, 1);
- if (tokidx >= ntok)
- {
- switch (operand->flags & AXP_OPERAND_OPTIONAL_MASK)
- {
- case AXP_OPERAND_DEFAULT_FIRST:
- t = &tok[0];
- break;
- case AXP_OPERAND_DEFAULT_SECOND:
- t = &tok[1];
- break;
- case AXP_OPERAND_DEFAULT_ZERO:
- {
- static expressionS zero_exp;
- t = &zero_exp;
- zero_exp.X_op = O_constant;
- zero_exp.X_unsigned = 1;
- }
- break;
- default:
- abort ();
- }
- }
- else
- t = &tok[tokidx++];
+ /* Emit "ldq_u $10, size-1($at)". */
+ set_tok_reg (newtok[0], AXP_REG_T10);
+ set_tok_const (newtok[1], (1 << lgsize) - 1);
+ assemble_tokens ("ldq_u", newtok, 3, 1);
- switch (t->X_op)
- {
- case O_register:
- case O_pregister:
- case O_cpregister:
- image = insert_operand (image, operand, regno (t->X_add_number),
- NULL, 0);
- break;
+ /* Emit "insXl src, $at, $t11". */
+ newtok[0] = tok[0];
+ set_tok_reg (newtok[1], AXP_REG_AT);
+ set_tok_reg (newtok[2], AXP_REG_T11);
+ assemble_tokens (insXl_op[lgsize], newtok, 3, 1);
- case O_constant:
- image = insert_operand (image, operand, t->X_add_number, NULL, 0);
- assert (reloc_operand == NULL);
- reloc_operand = operand;
- reloc_exp = t;
- break;
+ /* Emit "insXh src, $at, $t12". */
+ set_tok_reg (newtok[2], AXP_REG_T12);
+ assemble_tokens (insXh_op[lgsize], newtok, 3, 1);
- default:
- /* This is only 0 for fields that should contain registers,
- which means this pattern shouldn't have matched. */
- if (operand->default_reloc == 0)
- abort ();
+ /* Emit "mskXl $t9, $at, $t9". */
+ set_tok_reg (newtok[0], AXP_REG_T9);
+ newtok[2] = newtok[0];
+ assemble_tokens (mskXl_op[lgsize], newtok, 3, 1);
- /* There is one special case for which an insn receives two
- relocations, and thus the user-supplied reloc does not
- override the operand reloc. */
- if (operand->default_reloc == BFD_RELOC_ALPHA_HINT)
- {
- struct alpha_fixup *fixup;
+ /* Emit "mskXh $t10, $at, $t10". */
+ set_tok_reg (newtok[0], AXP_REG_T10);
+ newtok[2] = newtok[0];
+ assemble_tokens (mskXh_op[lgsize], newtok, 3, 1);
- if (insn->nfixups >= MAX_INSN_FIXUPS)
- as_fatal (_("too many fixups"));
+ /* Emit "or $t9, $t11, $t9". */
+ set_tok_reg (newtok[0], AXP_REG_T9);
+ set_tok_reg (newtok[1], AXP_REG_T11);
+ newtok[2] = newtok[0];
+ assemble_tokens ("or", newtok, 3, 1);
- fixup = &insn->fixups[insn->nfixups++];
- fixup->exp = *t;
- fixup->reloc = BFD_RELOC_ALPHA_HINT;
- }
- else
- {
- if (reloc == BFD_RELOC_UNUSED)
- reloc = operand->default_reloc;
+ /* Emit "or $t10, $t12, $t10". */
+ set_tok_reg (newtok[0], AXP_REG_T10);
+ set_tok_reg (newtok[1], AXP_REG_T12);
+ newtok[2] = newtok[0];
+ assemble_tokens ("or", newtok, 3, 1);
- assert (reloc_operand == NULL);
- reloc_operand = operand;
- reloc_exp = t;
- }
- break;
- }
- }
+ /* Emit "stq_u $t10, size-1($at)". */
+ set_tok_reg (newtok[0], AXP_REG_T10);
+ set_tok_const (newtok[1], (1 << lgsize) - 1);
+ set_tok_preg (newtok[2], AXP_REG_AT);
+ assemble_tokens ("stq_u", newtok, 3, 1);
- if (reloc != BFD_RELOC_UNUSED)
- {
- struct alpha_fixup *fixup;
+ /* Emit "stq_u $t9, 0($at)". */
+ set_tok_reg (newtok[0], AXP_REG_T9);
+ set_tok_const (newtok[1], 0);
+ assemble_tokens ("stq_u", newtok, 3, 1);
+}
- if (insn->nfixups >= MAX_INSN_FIXUPS)
- as_fatal (_("too many fixups"));
+/* Sign extend a half-word or byte. The 32-bit sign extend is
+ implemented as "addl $31, $r, $t" in the opcode table. */
- /* ??? My but this is hacky. But the OSF/1 assembler uses the same
- relocation tag for both ldah and lda with gpdisp. Choose the
- correct internal relocation based on the opcode. */
- if (reloc == BFD_RELOC_ALPHA_GPDISP)
- {
- if (strcmp (opcode->name, "ldah") == 0)
- reloc = BFD_RELOC_ALPHA_GPDISP_HI16;
- else if (strcmp (opcode->name, "lda") == 0)
- reloc = BFD_RELOC_ALPHA_GPDISP_LO16;
- else
- as_bad (_("invalid relocation for instruction"));
- }
+static void
+emit_sextX (const expressionS *tok,
+ int ntok,
+ const void * vlgsize)
+{
+ long lgsize = (long) vlgsize;
- /* If this is a real relocation (as opposed to a lituse hint), then
- the relocation width should match the operand width. */
- else if (reloc < BFD_RELOC_UNUSED)
- {
- reloc_howto_type *reloc_howto
- = bfd_reloc_type_lookup (stdoutput, reloc);
- if (reloc_howto->bitsize != reloc_operand->bits)
- {
- as_bad (_("invalid relocation for field"));
- return;
- }
- }
+ if (alpha_target & AXP_OPCODE_BWX)
+ assemble_tokens (sextX_op[lgsize], tok, ntok, 0);
+ else
+ {
+ int bitshift = 64 - 8 * (1 << lgsize);
+ expressionS newtok[3];
- fixup = &insn->fixups[insn->nfixups++];
- if (reloc_exp)
- fixup->exp = *reloc_exp;
- else
- fixup->exp.X_op = O_absent;
- fixup->reloc = reloc;
- }
+ /* Emit "sll src,bits,dst". */
+ newtok[0] = tok[0];
+ set_tok_const (newtok[1], bitshift);
+ newtok[2] = tok[ntok - 1];
+ assemble_tokens ("sll", newtok, 3, 1);
- insn->insn = image;
+ /* Emit "sra dst,bits,dst". */
+ newtok[0] = newtok[2];
+ assemble_tokens ("sra", newtok, 3, 1);
+ }
}
-/*
- * Actually output an instruction with its fixup.
- */
+/* Implement the division and modulus macros. */
+
+#ifdef OBJ_EVAX
+
+/* Make register usage like in normal procedure call.
+ Don't clobber PV and RA. */
static void
-emit_insn (insn)
- struct alpha_insn *insn;
+emit_division (const expressionS *tok,
+ int ntok,
+ const void * symname)
{
- char *f;
- int i;
+ /* DIVISION and MODULUS. Yech.
- /* Take care of alignment duties. */
- if (alpha_auto_align_on && alpha_current_align < 2)
- alpha_align (2, (char *) NULL, alpha_insn_label, 0);
- if (alpha_current_align > 2)
- alpha_current_align = 2;
- alpha_insn_label = NULL;
+ Convert
+ OP x,y,result
+ to
+ mov x,R16 # if x != R16
+ mov y,R17 # if y != R17
+ lda AT,__OP
+ jsr AT,(AT),0
+ mov R0,result
- /* Write out the instruction. */
- f = frag_more (4);
- md_number_to_chars (f, insn->insn, 4);
+ with appropriate optimizations if R0,R16,R17 are the registers
+ specified by the compiler. */
-#ifdef OBJ_ELF
- dwarf2_emit_insn (4);
-#endif
+ int xr, yr, rr;
+ symbolS *sym;
+ expressionS newtok[3];
- /* Apply the fixups in order */
- for (i = 0; i < insn->nfixups; ++i)
+ xr = regno (tok[0].X_add_number);
+ yr = regno (tok[1].X_add_number);
+
+ if (ntok < 3)
+ rr = xr;
+ else
+ rr = regno (tok[2].X_add_number);
+
+ /* Move the operands into the right place. */
+ if (yr == AXP_REG_R16 && xr == AXP_REG_R17)
{
- const struct alpha_operand *operand = (const struct alpha_operand *) 0;
- struct alpha_fixup *fixup = &insn->fixups[i];
- struct alpha_reloc_tag *info;
- int size, pcrel;
- fixS *fixP;
+ /* They are in exactly the wrong order -- swap through AT. */
+ if (alpha_noat_on)
+ as_bad (_("macro requires $at register while noat in effect"));
- /* Some fixups are only used internally and so have no howto */
- if ((int) fixup->reloc < 0)
+ set_tok_reg (newtok[0], AXP_REG_R16);
+ set_tok_reg (newtok[1], AXP_REG_AT);
+ assemble_tokens ("mov", newtok, 2, 1);
+
+ set_tok_reg (newtok[0], AXP_REG_R17);
+ set_tok_reg (newtok[1], AXP_REG_R16);
+ assemble_tokens ("mov", newtok, 2, 1);
+
+ set_tok_reg (newtok[0], AXP_REG_AT);
+ set_tok_reg (newtok[1], AXP_REG_R17);
+ assemble_tokens ("mov", newtok, 2, 1);
+ }
+ else
+ {
+ if (yr == AXP_REG_R16)
{
- operand = &alpha_operands[-(int) fixup->reloc];
- size = 4;
- pcrel = ((operand->flags & AXP_OPERAND_RELATIVE) != 0);
+ set_tok_reg (newtok[0], AXP_REG_R16);
+ set_tok_reg (newtok[1], AXP_REG_R17);
+ assemble_tokens ("mov", newtok, 2, 1);
}
- else if (fixup->reloc > BFD_RELOC_UNUSED
- || fixup->reloc == BFD_RELOC_ALPHA_GPDISP_HI16
- || fixup->reloc == BFD_RELOC_ALPHA_GPDISP_LO16)
+
+ if (xr != AXP_REG_R16)
{
- size = 2;
- pcrel = 0;
+ set_tok_reg (newtok[0], xr);
+ set_tok_reg (newtok[1], AXP_REG_R16);
+ assemble_tokens ("mov", newtok, 2, 1);
}
- else
- {
- reloc_howto_type *reloc_howto
- = bfd_reloc_type_lookup (stdoutput, fixup->reloc);
- assert (reloc_howto);
-
- size = bfd_get_reloc_size (reloc_howto);
- assert (size >= 1 && size <= 4);
- pcrel = reloc_howto->pc_relative;
+ if (yr != AXP_REG_R16 && yr != AXP_REG_R17)
+ {
+ set_tok_reg (newtok[0], yr);
+ set_tok_reg (newtok[1], AXP_REG_R17);
+ assemble_tokens ("mov", newtok, 2, 1);
}
+ }
- fixP = fix_new_exp (frag_now, f - frag_now->fr_literal, size,
- &fixup->exp, pcrel, fixup->reloc);
+ sym = symbol_find_or_make ((const char *) symname);
- /* Turn off complaints that the addend is too large for some fixups,
- and copy in the sequence number for the explicit relocations. */
- switch (fixup->reloc)
- {
- case BFD_RELOC_ALPHA_HINT:
- case BFD_RELOC_GPREL32:
- case BFD_RELOC_GPREL16:
- case BFD_RELOC_ALPHA_GPREL_HI16:
- case BFD_RELOC_ALPHA_GPREL_LO16:
- fixP->fx_no_overflow = 1;
- break;
+ set_tok_reg (newtok[0], AXP_REG_AT);
+ set_tok_sym (newtok[1], sym, 0);
+ assemble_tokens ("lda", newtok, 2, 1);
- case BFD_RELOC_ALPHA_GPDISP_HI16:
- fixP->fx_no_overflow = 1;
- fixP->fx_addsy = section_symbol (now_seg);
- fixP->fx_offset = 0;
+ /* Call the division routine. */
+ set_tok_reg (newtok[0], AXP_REG_AT);
+ set_tok_cpreg (newtok[1], AXP_REG_AT);
+ set_tok_const (newtok[2], 0);
+ assemble_tokens ("jsr", newtok, 3, 1);
- info = get_alpha_reloc_tag (insn->sequence);
- if (++info->n_master > 1)
- as_bad (_("too many ldah insns for !gpdisp!%ld"), insn->sequence);
- if (info->segment != now_seg)
- as_bad (_("both insns for !gpdisp!%ld must be in the same section"),
- insn->sequence);
- fixP->tc_fix_data.info = info;
- break;
+ /* Move the result to the right place. */
+ if (rr != AXP_REG_R0)
+ {
+ set_tok_reg (newtok[0], AXP_REG_R0);
+ set_tok_reg (newtok[1], rr);
+ assemble_tokens ("mov", newtok, 2, 1);
+ }
+}
- case BFD_RELOC_ALPHA_GPDISP_LO16:
- fixP->fx_no_overflow = 1;
+#else /* !OBJ_EVAX */
- info = get_alpha_reloc_tag (insn->sequence);
- if (++info->n_slaves > 1)
- as_bad (_("too many lda insns for !gpdisp!%ld"), insn->sequence);
- if (info->segment != now_seg)
- as_bad (_("both insns for !gpdisp!%ld must be in the same section"),
- insn->sequence);
- fixP->tc_fix_data.info = info;
- info->slaves = fixP;
- break;
+static void
+emit_division (const expressionS *tok,
+ int ntok,
+ const void * symname)
+{
+ /* DIVISION and MODULUS. Yech.
+ Convert
+ OP x,y,result
+ to
+ lda pv,__OP
+ mov x,t10
+ mov y,t11
+ jsr t9,(pv),__OP
+ mov t12,result
+
+ with appropriate optimizations if t10,t11,t12 are the registers
+ specified by the compiler. */
- case BFD_RELOC_ALPHA_LITERAL:
- case BFD_RELOC_ALPHA_ELF_LITERAL:
- fixP->fx_no_overflow = 1;
-
- info = get_alpha_reloc_tag (insn->sequence);
- info->n_master++;
- if (info->segment != now_seg)
- info->multi_section_p = 1;
- fixP->tc_fix_data.info = info;
- break;
+ int xr, yr, rr;
+ symbolS *sym;
+ expressionS newtok[3];
- case DUMMY_RELOC_LITUSE_ADDR:
- fixP->fx_offset = LITUSE_ADDR;
- goto do_lituse;
- case DUMMY_RELOC_LITUSE_BASE:
- fixP->fx_offset = LITUSE_BASE;
- goto do_lituse;
- case DUMMY_RELOC_LITUSE_BYTOFF:
- fixP->fx_offset = LITUSE_BYTOFF;
- goto do_lituse;
- case DUMMY_RELOC_LITUSE_JSR:
- fixP->fx_offset = LITUSE_JSR;
- do_lituse:
- fixP->fx_addsy = section_symbol (now_seg);
- fixP->fx_r_type = BFD_RELOC_ALPHA_LITUSE;
+ xr = regno (tok[0].X_add_number);
+ yr = regno (tok[1].X_add_number);
- info = get_alpha_reloc_tag (insn->sequence);
- info->n_slaves++;
- fixP->tc_fix_data.info = info;
- fixP->tc_fix_data.next_reloc = info->slaves;
- info->slaves = fixP;
- if (info->segment != now_seg)
- info->multi_section_p = 1;
- break;
+ if (ntok < 3)
+ rr = xr;
+ else
+ rr = regno (tok[2].X_add_number);
- default:
- if ((int) fixup->reloc < 0)
- {
- if (operand->flags & AXP_OPERAND_NOOVERFLOW)
- fixP->fx_no_overflow = 1;
- }
- break;
- }
- }
-}
+ sym = symbol_find_or_make ((const char *) symname);
-/* Given an opcode name and a pre-tokenized set of arguments, assemble
- the insn, but do not emit it.
+ /* Move the operands into the right place. */
+ if (yr == AXP_REG_T10 && xr == AXP_REG_T11)
+ {
+ /* They are in exactly the wrong order -- swap through AT. */
+ if (alpha_noat_on)
+ as_bad (_("macro requires $at register while noat in effect"));
- Note that this implies no macros allowed, since we can't store more
- than one insn in an insn structure. */
+ set_tok_reg (newtok[0], AXP_REG_T10);
+ set_tok_reg (newtok[1], AXP_REG_AT);
+ assemble_tokens ("mov", newtok, 2, 1);
-static void
-assemble_tokens_to_insn (opname, tok, ntok, insn)
- const char *opname;
- const expressionS *tok;
- int ntok;
- struct alpha_insn *insn;
-{
- const struct alpha_opcode *opcode;
+ set_tok_reg (newtok[0], AXP_REG_T11);
+ set_tok_reg (newtok[1], AXP_REG_T10);
+ assemble_tokens ("mov", newtok, 2, 1);
- /* search opcodes */
- opcode = (const struct alpha_opcode *) hash_find (alpha_opcode_hash, opname);
- if (opcode)
+ set_tok_reg (newtok[0], AXP_REG_AT);
+ set_tok_reg (newtok[1], AXP_REG_T11);
+ assemble_tokens ("mov", newtok, 2, 1);
+ }
+ else
{
- int cpumatch;
- opcode = find_opcode_match (opcode, tok, &ntok, &cpumatch);
- if (opcode)
+ if (yr == AXP_REG_T10)
{
- assemble_insn (opcode, tok, ntok, insn, BFD_RELOC_UNUSED);
- return;
+ set_tok_reg (newtok[0], AXP_REG_T10);
+ set_tok_reg (newtok[1], AXP_REG_T11);
+ assemble_tokens ("mov", newtok, 2, 1);
+ }
+
+ if (xr != AXP_REG_T10)
+ {
+ set_tok_reg (newtok[0], xr);
+ set_tok_reg (newtok[1], AXP_REG_T10);
+ assemble_tokens ("mov", newtok, 2, 1);
+ }
+
+ if (yr != AXP_REG_T10 && yr != AXP_REG_T11)
+ {
+ set_tok_reg (newtok[0], yr);
+ set_tok_reg (newtok[1], AXP_REG_T11);
+ assemble_tokens ("mov", newtok, 2, 1);
}
- else if (cpumatch)
- as_bad (_("inappropriate arguments for opcode `%s'"), opname);
- else
- as_bad (_("opcode `%s' not supported for target %s"), opname,
- alpha_target_name);
}
- else
- as_bad (_("unknown opcode `%s'"), opname);
+
+ /* Call the division routine. */
+ set_tok_reg (newtok[0], AXP_REG_T9);
+ set_tok_sym (newtok[1], sym, 0);
+ assemble_tokens ("jsr", newtok, 2, 1);
+
+ /* Reload the GP register. */
+#ifdef OBJ_AOUT
+FIXME
+#endif
+#if defined(OBJ_ECOFF) || defined(OBJ_ELF)
+ set_tok_reg (newtok[0], alpha_gp_register);
+ set_tok_const (newtok[1], 0);
+ set_tok_preg (newtok[2], AXP_REG_T9);
+ assemble_tokens ("ldgp", newtok, 3, 1);
+#endif
+
+ /* Move the result to the right place. */
+ if (rr != AXP_REG_T12)
+ {
+ set_tok_reg (newtok[0], AXP_REG_T12);
+ set_tok_reg (newtok[1], rr);
+ assemble_tokens ("mov", newtok, 2, 1);
+ }
}
-/* Given an opcode name and a pre-tokenized set of arguments, take the
- opcode all the way through emission. */
+#endif /* !OBJ_EVAX */
+
+/* The jsr and jmp macros differ from their instruction counterparts
+ in that they can load the target address and default most
+ everything. */
static void
-assemble_tokens (opname, tok, ntok, local_macros_on)
- const char *opname;
- const expressionS *tok;
- int ntok;
- int local_macros_on;
+emit_jsrjmp (const expressionS *tok,
+ int ntok,
+ const void * vopname)
{
- int found_something = 0;
- const struct alpha_opcode *opcode;
- const struct alpha_macro *macro;
- int cpumatch = 1;
- bfd_reloc_code_real_type reloc = BFD_RELOC_UNUSED;
+ const char *opname = (const char *) vopname;
+ struct alpha_insn insn;
+ expressionS newtok[3];
+ int r, tokidx = 0;
+ long lituse = 0;
- /* If a user-specified relocation is present, this is not a macro. */
- if (ntok && USER_RELOC_P (tok[ntok - 1].X_op))
+ if (tokidx < ntok && tok[tokidx].X_op == O_register)
+ r = regno (tok[tokidx++].X_add_number);
+ else
+ r = strcmp (opname, "jmp") == 0 ? AXP_REG_ZERO : AXP_REG_RA;
+
+ set_tok_reg (newtok[0], r);
+
+ if (tokidx < ntok &&
+ (tok[tokidx].X_op == O_pregister || tok[tokidx].X_op == O_cpregister))
+ r = regno (tok[tokidx++].X_add_number);
+#ifdef OBJ_EVAX
+ /* Keep register if jsr $n.<sym>. */
+#else
+ else
{
- reloc = ALPHA_RELOC_TABLE (tok[ntok - 1].X_op)->reloc;
- ntok--;
+ int basereg = alpha_gp_register;
+ lituse = load_expression (r = AXP_REG_PV, &tok[tokidx],
+ &basereg, NULL, opname);
}
- else if (local_macros_on)
+#endif
+
+ set_tok_cpreg (newtok[1], r);
+
+#ifndef OBJ_EVAX
+ if (tokidx < ntok)
+ newtok[2] = tok[tokidx];
+ else
+#endif
+ set_tok_const (newtok[2], 0);
+
+ assemble_tokens_to_insn (opname, newtok, 3, &insn);
+
+ if (lituse)
{
- macro = ((const struct alpha_macro *)
- hash_find (alpha_macro_hash, opname));
- if (macro)
- {
- found_something = 1;
- macro = find_macro_match (macro, tok, &ntok);
- if (macro)
- {
- (*macro->emit) (tok, ntok, macro->arg);
- return;
- }
- }
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_JSR;
+ insn.fixups[insn.nfixups].exp.X_op = O_absent;
+ insn.nfixups++;
+ insn.sequence = lituse;
}
- /* search opcodes */
- opcode = (const struct alpha_opcode *) hash_find (alpha_opcode_hash, opname);
- if (opcode)
+#ifdef OBJ_EVAX
+ if (alpha_flag_replace
+ && r == AXP_REG_RA
+ && tok[tokidx].X_add_symbol
+ && alpha_linkage_symbol)
{
- found_something = 1;
- opcode = find_opcode_match (opcode, tok, &ntok, &cpumatch);
- if (opcode)
- {
- struct alpha_insn insn;
- assemble_insn (opcode, tok, ntok, &insn, reloc);
+ const char *symname = S_GET_NAME (tok[tokidx].X_add_symbol);
+ int symlen = strlen (symname);
+ char *ensymname;
- /* Copy the sequence number for the reloc from the reloc token. */
- if (reloc != BFD_RELOC_UNUSED)
- insn.sequence = tok[ntok].X_add_number;
+ ensymname = (char *) xmalloc (symlen + 5);
+ memcpy (ensymname, symname, symlen);
+ memcpy (ensymname + symlen, "..en", 5);
- emit_insn (&insn);
- return;
+ gas_assert (insn.nfixups < MAX_INSN_FIXUPS);
+ if (insn.nfixups > 0)
+ {
+ memmove (&insn.fixups[1], &insn.fixups[0],
+ sizeof(struct alpha_fixup) * insn.nfixups);
}
- }
- if (found_something)
- {
- if (cpumatch)
- as_bad (_("inappropriate arguments for opcode `%s'"), opname);
- else
- as_bad (_("opcode `%s' not supported for target %s"), opname,
- alpha_target_name);
+ /* The fixup must be the same as the BFD_RELOC_ALPHA_NOP
+ case in load_expression. See B.4.5.2 of the OpenVMS
+ Linker Utility Manual. */
+ insn.fixups[0].reloc = BFD_RELOC_ALPHA_BOH;
+ insn.fixups[0].exp.X_op = O_symbol;
+ insn.fixups[0].exp.X_add_symbol = symbol_find_or_make (ensymname);
+ insn.fixups[0].exp.X_add_number = 0;
+ insn.fixups[0].xtrasym = alpha_linkage_symbol;
+ insn.fixups[0].procsym = alpha_evax_proc->symbol;
+ insn.nfixups++;
+ alpha_linkage_symbol = 0;
}
+#endif
+
+ emit_insn (&insn);
+}
+
+/* The ret and jcr instructions differ from their instruction
+ counterparts in that everything can be defaulted. */
+
+static void
+emit_retjcr (const expressionS *tok,
+ int ntok,
+ const void * vopname)
+{
+ const char *opname = (const char *) vopname;
+ expressionS newtok[3];
+ int r, tokidx = 0;
+
+ if (tokidx < ntok && tok[tokidx].X_op == O_register)
+ r = regno (tok[tokidx++].X_add_number);
else
- as_bad (_("unknown opcode `%s'"), opname);
+ r = AXP_REG_ZERO;
+
+ set_tok_reg (newtok[0], r);
+
+ if (tokidx < ntok &&
+ (tok[tokidx].X_op == O_pregister || tok[tokidx].X_op == O_cpregister))
+ r = regno (tok[tokidx++].X_add_number);
+ else
+ r = AXP_REG_RA;
+
+ set_tok_cpreg (newtok[1], r);
+
+ if (tokidx < ntok)
+ newtok[2] = tok[tokidx];
+ else
+ set_tok_const (newtok[2], strcmp (opname, "ret") == 0);
+
+ assemble_tokens (opname, newtok, 3, 0);
}
-\f
-/* Some instruction sets indexed by lg(size) */
-static const char * const sextX_op[] = { "sextb", "sextw", "sextl", NULL };
-static const char * const insXl_op[] = { "insbl", "inswl", "insll", "insql" };
-static const char * const insXh_op[] = { NULL, "inswh", "inslh", "insqh" };
-static const char * const extXl_op[] = { "extbl", "extwl", "extll", "extql" };
-static const char * const extXh_op[] = { NULL, "extwh", "extlh", "extqh" };
-static const char * const mskXl_op[] = { "mskbl", "mskwl", "mskll", "mskql" };
-static const char * const mskXh_op[] = { NULL, "mskwh", "msklh", "mskqh" };
-static const char * const stX_op[] = { "stb", "stw", "stl", "stq" };
-static const char * const ldX_op[] = { "ldb", "ldw", "ldll", "ldq" };
-static const char * const ldXu_op[] = { "ldbu", "ldwu", NULL, NULL };
/* Implement the ldgp macro. */
static void
-emit_ldgp (tok, ntok, unused)
- const expressionS *tok;
- int ntok ATTRIBUTE_UNUSED;
- const PTR unused ATTRIBUTE_UNUSED;
+emit_ldgp (const expressionS *tok,
+ int ntok ATTRIBUTE_UNUSED,
+ const void * unused ATTRIBUTE_UNUSED)
{
#ifdef OBJ_AOUT
FIXME
insn.sequence = next_sequence_num--;
emit_insn (&insn);
-#endif /* OBJ_ECOFF || OBJ_ELF */
+#else /* OBJ_ECOFF || OBJ_ELF */
+ /* Avoid warning. */
+ tok = NULL;
+#endif
}
-#ifdef OBJ_EVAX
-
-/* Add symbol+addend to link pool.
- Return offset from basesym to entry in link pool.
-
- Add new fixup only if offset isn't 16bit. */
-
-valueT
-add_to_link_pool (basesym, sym, addend)
- symbolS *basesym;
- symbolS *sym;
- offsetT addend;
-{
- segT current_section = now_seg;
- int current_subsec = now_subseg;
- valueT offset;
- bfd_reloc_code_real_type reloc_type;
- char *p;
- segment_info_type *seginfo = seg_info (alpha_link_section);
- fixS *fixp;
-
- offset = - *symbol_get_obj (basesym);
-
- /* @@ This assumes all entries in a given section will be of the same
- size... Probably correct, but unwise to rely on. */
- /* This must always be called with the same subsegment. */
-
- if (seginfo->frchainP)
- for (fixp = seginfo->frchainP->fix_root;
- fixp != (fixS *) NULL;
- fixp = fixp->fx_next, offset += 8)
- {
- if (fixp->fx_addsy == sym && fixp->fx_offset == addend)
- {
- if (range_signed_16 (offset))
- {
- return offset;
- }
- }
- }
-
- /* Not found in 16bit signed range. */
-
- subseg_set (alpha_link_section, 0);
- p = frag_more (8);
- memset (p, 0, 8);
-
- fix_new (frag_now, p - frag_now->fr_literal, 8, sym, addend, 0,
- BFD_RELOC_64);
-
- subseg_set (current_section, current_subsec);
- seginfo->literal_pool_size += 8;
- return offset;
-}
-
-#endif /* OBJ_EVAX */
-
-/* Load a (partial) expression into a target register.
-
- If poffset is not null, after the call it will either contain
- O_constant 0, or a 16-bit offset appropriate for any MEM format
- instruction. In addition, pbasereg will be modified to point to
- the base register to use in that MEM format instruction.
-
- In any case, *pbasereg should contain a base register to add to the
- expression. This will normally be either AXP_REG_ZERO or
- alpha_gp_register. Symbol addresses will always be loaded via $gp,
- so "foo($0)" is interpreted as adding the address of foo to $0;
- i.e. "ldq $targ, LIT($gp); addq $targ, $0, $targ". Odd, perhaps,
- but this is what OSF/1 does.
-
- If explicit relocations of the form !literal!<number> are allowed,
- and used, then explict_reloc with be an expression pointer.
-
- Finally, the return value is nonzero if the calling macro may emit
- a LITUSE reloc if otherwise appropriate; the return value is the
- sequence number to use. */
+/* The macro table. */
-static long
-load_expression (targreg, exp, pbasereg, poffset)
- int targreg;
- const expressionS *exp;
- int *pbasereg;
- expressionS *poffset;
+static const struct alpha_macro alpha_macros[] =
{
- long emit_lituse = 0;
- offsetT addend = exp->X_add_number;
- int basereg = *pbasereg;
- struct alpha_insn insn;
- expressionS newtok[3];
-
- switch (exp->X_op)
- {
- case O_symbol:
- {
-#ifdef OBJ_ECOFF
- offsetT lit;
-
- /* attempt to reduce .lit load by splitting the offset from
- its symbol when possible, but don't create a situation in
- which we'd fail. */
- if (!range_signed_32 (addend) &&
- (alpha_noat_on || targreg == AXP_REG_AT))
- {
- lit = add_to_literal_pool (exp->X_add_symbol, addend,
- alpha_lita_section, 8);
- addend = 0;
- }
- else
- {
- lit = add_to_literal_pool (exp->X_add_symbol, 0,
- alpha_lita_section, 8);
- }
-
- if (lit >= 0x8000)
- as_fatal (_("overflow in literal (.lita) table"));
-
- /* emit "ldq r, lit(gp)" */
-
- if (basereg != alpha_gp_register && targreg == basereg)
- {
- if (alpha_noat_on)
- as_bad (_("macro requires $at register while noat in effect"));
- if (targreg == AXP_REG_AT)
- as_bad (_("macro requires $at while $at in use"));
-
- set_tok_reg (newtok[0], AXP_REG_AT);
- }
- else
- set_tok_reg (newtok[0], targreg);
- set_tok_sym (newtok[1], alpha_lita_symbol, lit);
- set_tok_preg (newtok[2], alpha_gp_register);
-
- assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
-
- assert (insn.nfixups == 1);
- insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITERAL;
- insn.sequence = emit_lituse = next_sequence_num--;
-#endif /* OBJ_ECOFF */
-#ifdef OBJ_ELF
- /* emit "ldq r, gotoff(gp)" */
-
- if (basereg != alpha_gp_register && targreg == basereg)
- {
- if (alpha_noat_on)
- as_bad (_("macro requires $at register while noat in effect"));
- if (targreg == AXP_REG_AT)
- as_bad (_("macro requires $at while $at in use"));
-
- set_tok_reg (newtok[0], AXP_REG_AT);
- }
- else
- set_tok_reg (newtok[0], targreg);
-
- /* XXX: Disable this .got minimizing optimization so that we can get
- better instruction offset knowledge in the compiler. This happens
- very infrequently anyway. */
- if (1
- || (!range_signed_32 (addend)
- && (alpha_noat_on || targreg == AXP_REG_AT)))
- {
- newtok[1] = *exp;
- addend = 0;
- }
- else
- {
- set_tok_sym (newtok[1], exp->X_add_symbol, 0);
- }
-
- set_tok_preg (newtok[2], alpha_gp_register);
-
- assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
+/* Load/Store macros. */
+ { "lda", emit_lda, NULL,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldah", emit_ldah, NULL,
+ { MACRO_IR, MACRO_EXP, MACRO_EOA } },
- assert (insn.nfixups == 1);
- insn.fixups[0].reloc = BFD_RELOC_ALPHA_ELF_LITERAL;
- insn.sequence = emit_lituse = next_sequence_num--;
-#endif /* OBJ_ELF */
-#ifdef OBJ_EVAX
- offsetT link;
+ { "ldl", emit_ir_load, "ldl",
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldl_l", emit_ir_load, "ldl_l",
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldq", emit_ir_load, "ldq",
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldq_l", emit_ir_load, "ldq_l",
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldq_u", emit_ir_load, "ldq_u",
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldf", emit_loadstore, "ldf",
+ { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldg", emit_loadstore, "ldg",
+ { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "lds", emit_loadstore, "lds",
+ { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldt", emit_loadstore, "ldt",
+ { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- /* Find symbol or symbol pointer in link section. */
+ { "ldb", emit_ldX, (void *) 0,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldbu", emit_ldXu, (void *) 0,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldw", emit_ldX, (void *) 1,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ldwu", emit_ldXu, (void *) 1,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- if (exp->X_add_symbol == alpha_evax_proc.symbol)
- {
- if (range_signed_16 (addend))
- {
- set_tok_reg (newtok[0], targreg);
- set_tok_const (newtok[1], addend);
- set_tok_preg (newtok[2], basereg);
- assemble_tokens_to_insn ("lda", newtok, 3, &insn);
- addend = 0;
- }
- else
- {
- set_tok_reg (newtok[0], targreg);
- set_tok_const (newtok[1], 0);
- set_tok_preg (newtok[2], basereg);
- assemble_tokens_to_insn ("lda", newtok, 3, &insn);
- }
- }
- else
- {
- if (!range_signed_32 (addend))
- {
- link = add_to_link_pool (alpha_evax_proc.symbol,
- exp->X_add_symbol, addend);
- addend = 0;
- }
- else
- {
- link = add_to_link_pool (alpha_evax_proc.symbol,
- exp->X_add_symbol, 0);
- }
- set_tok_reg (newtok[0], targreg);
- set_tok_const (newtok[1], link);
- set_tok_preg (newtok[2], basereg);
- assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
- }
-#endif /* OBJ_EVAX */
+ { "uldw", emit_uldX, (void *) 1,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "uldwu", emit_uldXu, (void *) 1,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "uldl", emit_uldX, (void *) 2,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "uldlu", emit_uldXu, (void *) 2,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "uldq", emit_uldXu, (void *) 3,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- emit_insn (&insn);
+ { "ldgp", emit_ldgp, NULL,
+ { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA } },
-#ifndef OBJ_EVAX
- if (basereg != alpha_gp_register && basereg != AXP_REG_ZERO)
- {
- /* emit "addq r, base, r" */
+ { "ldi", emit_lda, NULL,
+ { MACRO_IR, MACRO_EXP, MACRO_EOA } },
+ { "ldil", emit_ldil, NULL,
+ { MACRO_IR, MACRO_EXP, MACRO_EOA } },
+ { "ldiq", emit_lda, NULL,
+ { MACRO_IR, MACRO_EXP, MACRO_EOA } },
- set_tok_reg (newtok[1], basereg);
- set_tok_reg (newtok[2], targreg);
- assemble_tokens ("addq", newtok, 3, 0);
- }
-#endif
+ { "stl", emit_loadstore, "stl",
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "stl_c", emit_loadstore, "stl_c",
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "stq", emit_loadstore, "stq",
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "stq_c", emit_loadstore, "stq_c",
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "stq_u", emit_loadstore, "stq_u",
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "stf", emit_loadstore, "stf",
+ { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "stg", emit_loadstore, "stg",
+ { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "sts", emit_loadstore, "sts",
+ { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "stt", emit_loadstore, "stt",
+ { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- basereg = targreg;
- }
- break;
+ { "stb", emit_stX, (void *) 0,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "stw", emit_stX, (void *) 1,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ustw", emit_ustX, (void *) 1,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ustl", emit_ustX, (void *) 2,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
+ { "ustq", emit_ustX, (void *) 3,
+ { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } },
- case O_constant:
- break;
+/* Arithmetic macros. */
- case O_subtract:
- /* Assume that this difference expression will be resolved to an
- absolute value and that that value will fit in 16 bits. */
+ { "sextb", emit_sextX, (void *) 0,
+ { MACRO_IR, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_EOA,
+ /* MACRO_EXP, MACRO_IR, MACRO_EOA */ } },
+ { "sextw", emit_sextX, (void *) 1,
+ { MACRO_IR, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_EOA,
+ /* MACRO_EXP, MACRO_IR, MACRO_EOA */ } },
- set_tok_reg (newtok[0], targreg);
- newtok[1] = *exp;
- set_tok_preg (newtok[2], basereg);
- assemble_tokens ("lda", newtok, 3, 0);
+ { "divl", emit_division, "__divl",
+ { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_IR, MACRO_EOA,
+ /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
+ { "divlu", emit_division, "__divlu",
+ { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_IR, MACRO_EOA,
+ /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
+ { "divq", emit_division, "__divq",
+ { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_IR, MACRO_EOA,
+ /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
+ { "divqu", emit_division, "__divqu",
+ { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_IR, MACRO_EOA,
+ /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
+ { "reml", emit_division, "__reml",
+ { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_IR, MACRO_EOA,
+ /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
+ { "remlu", emit_division, "__remlu",
+ { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_IR, MACRO_EOA,
+ /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
+ { "remq", emit_division, "__remq",
+ { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_IR, MACRO_EOA,
+ /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
+ { "remqu", emit_division, "__remqu",
+ { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_IR, MACRO_EOA,
+ /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA,
+ MACRO_IR, MACRO_EXP, MACRO_EOA */ } },
- if (poffset)
- set_tok_const (*poffset, 0);
- return 0;
+ { "jsr", emit_jsrjmp, "jsr",
+ { MACRO_PIR, MACRO_EXP, MACRO_EOA,
+ MACRO_PIR, MACRO_EOA,
+ MACRO_IR, MACRO_EXP, MACRO_EOA,
+ MACRO_EXP, MACRO_EOA } },
+ { "jmp", emit_jsrjmp, "jmp",
+ { MACRO_PIR, MACRO_EXP, MACRO_EOA,
+ MACRO_PIR, MACRO_EOA,
+ MACRO_IR, MACRO_EXP, MACRO_EOA,
+ MACRO_EXP, MACRO_EOA } },
+ { "ret", emit_retjcr, "ret",
+ { MACRO_IR, MACRO_EXP, MACRO_EOA,
+ MACRO_IR, MACRO_EOA,
+ MACRO_PIR, MACRO_EXP, MACRO_EOA,
+ MACRO_PIR, MACRO_EOA,
+ MACRO_EXP, MACRO_EOA,
+ MACRO_EOA } },
+ { "jcr", emit_retjcr, "jcr",
+ { MACRO_IR, MACRO_EXP, MACRO_EOA,
+ MACRO_IR, MACRO_EOA,
+ MACRO_PIR, MACRO_EXP, MACRO_EOA,
+ MACRO_PIR, MACRO_EOA,
+ MACRO_EXP, MACRO_EOA,
+ MACRO_EOA } },
+ { "jsr_coroutine", emit_retjcr, "jcr",
+ { MACRO_IR, MACRO_EXP, MACRO_EOA,
+ MACRO_IR, MACRO_EOA,
+ MACRO_PIR, MACRO_EXP, MACRO_EOA,
+ MACRO_PIR, MACRO_EOA,
+ MACRO_EXP, MACRO_EOA,
+ MACRO_EOA } },
+};
- case O_big:
- if (exp->X_add_number > 0)
- as_bad (_("bignum invalid; zero assumed"));
- else
- as_bad (_("floating point number invalid; zero assumed"));
- addend = 0;
- break;
+static const unsigned int alpha_num_macros
+ = sizeof (alpha_macros) / sizeof (*alpha_macros);
- default:
- as_bad (_("can't handle expression"));
- addend = 0;
- break;
- }
+/* Search forward through all variants of a macro looking for a syntax
+ match. */
- if (!range_signed_32 (addend))
- {
- offsetT lit;
- long seq_num = next_sequence_num--;
+static const struct alpha_macro *
+find_macro_match (const struct alpha_macro *first_macro,
+ const expressionS *tok,
+ int *pntok)
- /* For 64-bit addends, just put it in the literal pool. */
+{
+ const struct alpha_macro *macro = first_macro;
+ int ntok = *pntok;
-#ifdef OBJ_EVAX
- /* emit "ldq targreg, lit(basereg)" */
- lit = add_to_link_pool (alpha_evax_proc.symbol,
- section_symbol (absolute_section), addend);
- set_tok_reg (newtok[0], targreg);
- set_tok_const (newtok[1], lit);
- set_tok_preg (newtok[2], alpha_gp_register);
- assemble_tokens ("ldq", newtok, 3, 0);
-#else
+ do
+ {
+ const enum alpha_macro_arg *arg = macro->argsets;
+ int tokidx = 0;
- if (alpha_lit8_section == NULL)
+ while (*arg)
{
- create_literal_section (".lit8",
- &alpha_lit8_section,
- &alpha_lit8_symbol);
+ switch (*arg)
+ {
+ case MACRO_EOA:
+ if (tokidx == ntok)
+ return macro;
+ else
+ tokidx = 0;
+ break;
-#ifdef OBJ_ECOFF
- alpha_lit8_literal = add_to_literal_pool (alpha_lit8_symbol, 0x8000,
- alpha_lita_section, 8);
- if (alpha_lit8_literal >= 0x8000)
- as_fatal (_("overflow in literal (.lita) table"));
-#endif
- }
+ /* Index register. */
+ case MACRO_IR:
+ if (tokidx >= ntok || tok[tokidx].X_op != O_register
+ || !is_ir_num (tok[tokidx].X_add_number))
+ goto match_failed;
+ ++tokidx;
+ break;
- lit = add_to_literal_pool (NULL, addend, alpha_lit8_section, 8) - 0x8000;
- if (lit >= 0x8000)
- as_fatal (_("overflow in literal (.lit8) table"));
+ /* Parenthesized index register. */
+ case MACRO_PIR:
+ if (tokidx >= ntok || tok[tokidx].X_op != O_pregister
+ || !is_ir_num (tok[tokidx].X_add_number))
+ goto match_failed;
+ ++tokidx;
+ break;
- /* emit "lda litreg, .lit8+0x8000" */
+ /* Optional parenthesized index register. */
+ case MACRO_OPIR:
+ if (tokidx < ntok && tok[tokidx].X_op == O_pregister
+ && is_ir_num (tok[tokidx].X_add_number))
+ ++tokidx;
+ break;
- if (targreg == basereg)
- {
- if (alpha_noat_on)
- as_bad (_("macro requires $at register while noat in effect"));
- if (targreg == AXP_REG_AT)
- as_bad (_("macro requires $at while $at in use"));
+ /* Leading comma with a parenthesized index register. */
+ case MACRO_CPIR:
+ if (tokidx >= ntok || tok[tokidx].X_op != O_cpregister
+ || !is_ir_num (tok[tokidx].X_add_number))
+ goto match_failed;
+ ++tokidx;
+ break;
- set_tok_reg (newtok[0], AXP_REG_AT);
- }
- else
- set_tok_reg (newtok[0], targreg);
-#ifdef OBJ_ECOFF
- set_tok_sym (newtok[1], alpha_lita_symbol, alpha_lit8_literal);
-#endif
-#ifdef OBJ_ELF
- set_tok_sym (newtok[1], alpha_lit8_symbol, 0x8000);
-#endif
- set_tok_preg (newtok[2], alpha_gp_register);
+ /* Floating point register. */
+ case MACRO_FPR:
+ if (tokidx >= ntok || tok[tokidx].X_op != O_register
+ || !is_fpr_num (tok[tokidx].X_add_number))
+ goto match_failed;
+ ++tokidx;
+ break;
- assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
+ /* Normal expression. */
+ case MACRO_EXP:
+ if (tokidx >= ntok)
+ goto match_failed;
+ switch (tok[tokidx].X_op)
+ {
+ case O_illegal:
+ case O_absent:
+ case O_register:
+ case O_pregister:
+ case O_cpregister:
+ case O_literal:
+ case O_lituse_base:
+ case O_lituse_bytoff:
+ case O_lituse_jsr:
+ case O_gpdisp:
+ case O_gprelhigh:
+ case O_gprellow:
+ case O_gprel:
+ case O_samegp:
+ goto match_failed;
- assert (insn.nfixups == 1);
-#ifdef OBJ_ECOFF
- insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITERAL;
-#endif
-#ifdef OBJ_ELF
- insn.fixups[0].reloc = BFD_RELOC_ALPHA_ELF_LITERAL;
-#endif
- insn.sequence = seq_num;
+ default:
+ break;
+ }
+ ++tokidx;
+ break;
- emit_insn (&insn);
+ match_failed:
+ while (*arg != MACRO_EOA)
+ ++arg;
+ tokidx = 0;
+ break;
+ }
+ ++arg;
+ }
+ }
+ while (++macro - alpha_macros < (int) alpha_num_macros
+ && !strcmp (macro->name, first_macro->name));
- /* emit "ldq litreg, lit(litreg)" */
+ return NULL;
+}
- set_tok_const (newtok[1], lit);
- set_tok_preg (newtok[2], newtok[0].X_add_number);
+/* Given an opcode name and a pre-tokenized set of arguments, take the
+ opcode all the way through emission. */
- assemble_tokens_to_insn ("ldq", newtok, 3, &insn);
+static void
+assemble_tokens (const char *opname,
+ const expressionS *tok,
+ int ntok,
+ int local_macros_on)
+{
+ int found_something = 0;
+ const struct alpha_opcode *opcode;
+ const struct alpha_macro *macro;
+ int cpumatch = 1;
+ extended_bfd_reloc_code_real_type reloc = BFD_RELOC_UNUSED;
- assert (insn.nfixups < MAX_INSN_FIXUPS);
- insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
- insn.fixups[insn.nfixups].exp.X_op = O_absent;
- insn.nfixups++;
- insn.sequence = seq_num;
- emit_lituse = 0;
+#ifdef RELOC_OP_P
+ /* If a user-specified relocation is present, this is not a macro. */
+ if (ntok && USER_RELOC_P (tok[ntok - 1].X_op))
+ {
+ reloc = ALPHA_RELOC_TABLE (tok[ntok - 1].X_op)->reloc;
+ ntok--;
+ }
+ else
+#endif
+ if (local_macros_on)
+ {
+ macro = ((const struct alpha_macro *)
+ hash_find (alpha_macro_hash, opname));
+ if (macro)
+ {
+ found_something = 1;
+ macro = find_macro_match (macro, tok, &ntok);
+ if (macro)
+ {
+ (*macro->emit) (tok, ntok, macro->arg);
+ return;
+ }
+ }
+ }
- emit_insn (&insn);
+ /* Search opcodes. */
+ opcode = (const struct alpha_opcode *) hash_find (alpha_opcode_hash, opname);
+ if (opcode)
+ {
+ found_something = 1;
+ opcode = find_opcode_match (opcode, tok, &ntok, &cpumatch);
+ if (opcode)
+ {
+ struct alpha_insn insn;
+ assemble_insn (opcode, tok, ntok, &insn, reloc);
- /* emit "addq litreg, base, target" */
+ /* Copy the sequence number for the reloc from the reloc token. */
+ if (reloc != BFD_RELOC_UNUSED)
+ insn.sequence = tok[ntok].X_add_number;
- if (basereg != AXP_REG_ZERO)
- {
- set_tok_reg (newtok[1], basereg);
- set_tok_reg (newtok[2], targreg);
- assemble_tokens ("addq", newtok, 3, 0);
+ emit_insn (&insn);
+ return;
}
-#endif /* !OBJ_EVAX */
+ }
- if (poffset)
- set_tok_const (*poffset, 0);
- *pbasereg = targreg;
+ if (found_something)
+ {
+ if (cpumatch)
+ as_bad (_("inappropriate arguments for opcode `%s'"), opname);
+ else
+ as_bad (_("opcode `%s' not supported for target %s"), opname,
+ alpha_target_name);
}
else
- {
- offsetT low, high, extra, tmp;
+ as_bad (_("unknown opcode `%s'"), opname);
+}
+\f
+#ifdef OBJ_EVAX
- /* for 32-bit operands, break up the addend */
+/* Add symbol+addend to link pool.
+ Return offset from basesym to entry in link pool.
- low = sign_extend_16 (addend);
- tmp = addend - low;
- high = sign_extend_16 (tmp >> 16);
+ Add new fixup only if offset isn't 16bit. */
- if (tmp - (high << 16))
- {
- extra = 0x4000;
- tmp -= 0x40000000;
- high = sign_extend_16 (tmp >> 16);
- }
- else
- extra = 0;
+static symbolS *
+add_to_link_pool (symbolS *basesym,
+ symbolS *sym,
+ offsetT addend)
+{
+ segT current_section = now_seg;
+ int current_subsec = now_subseg;
+ valueT offset;
+ char *p;
+ segment_info_type *seginfo = seg_info (alpha_link_section);
+ fixS *fixp;
+ symbolS *linksym, *expsym;
+ expressionS e;
+
+ offset = 0; /* ??? DBR */
- set_tok_reg (newtok[0], targreg);
- set_tok_preg (newtok[2], basereg);
+ /* @@ This assumes all entries in a given section will be of the same
+ size... Probably correct, but unwise to rely on. */
+ /* This must always be called with the same subsegment. */
+
+ if (seginfo->frchainP)
+ for (fixp = seginfo->frchainP->fix_root;
+ fixp != (fixS *) NULL;
+ fixp = fixp->fx_next)
+ {
+ if (fixp->tc_fix_data.info
+ && fixp->tc_fix_data.info->sym
+ && fixp->tc_fix_data.info->sym->sy_value.X_op_symbol == basesym)
+ offset += 8;
+
+ if (fixp->fx_addsy == sym
+ && fixp->fx_offset == (valueT)addend
+ && fixp->tc_fix_data.info
+ && fixp->tc_fix_data.info->sym
+ && fixp->tc_fix_data.info->sym->sy_value.X_op_symbol == basesym)
+ return fixp->tc_fix_data.info->sym;
+ }
- if (extra)
- {
- /* emit "ldah r, extra(r) */
- set_tok_const (newtok[1], extra);
- assemble_tokens ("ldah", newtok, 3, 0);
- set_tok_preg (newtok[2], basereg = targreg);
- }
+ /* Not found in 16bit signed range. */
- if (high)
- {
- /* emit "ldah r, high(r) */
- set_tok_const (newtok[1], high);
- assemble_tokens ("ldah", newtok, 3, 0);
- basereg = targreg;
- set_tok_preg (newtok[2], basereg);
- }
+ subseg_set (alpha_link_section, 0);
+ linksym = symbol_new
+ (FAKE_LABEL_NAME, now_seg, (valueT) frag_now_fix (), frag_now);
+ p = frag_more (8);
+ memset (p, 0, 8);
- if ((low && !poffset) || (!poffset && basereg != targreg))
- {
- /* emit "lda r, low(base)" */
- set_tok_const (newtok[1], low);
- assemble_tokens ("lda", newtok, 3, 0);
- basereg = targreg;
- low = 0;
- }
+ e.X_op = O_subtract;
+ e.X_add_symbol = linksym;
+ e.X_op_symbol = basesym;
+ e.X_add_number = 0;
+ expsym = make_expr_symbol (&e);
- if (poffset)
- set_tok_const (*poffset, low);
- *pbasereg = basereg;
- }
+ fixp = fix_new
+ (frag_now, p-frag_now->fr_literal, 8, sym, addend, 0, BFD_RELOC_64);
+ fixp->tc_fix_data.info = get_alpha_reloc_tag (next_sequence_num--);
+ fixp->tc_fix_data.info->sym = expsym;
- return emit_lituse;
+ subseg_set (current_section, current_subsec);
+ seginfo->literal_pool_size += 8;
+ return expsym;
}
+#endif /* OBJ_EVAX */
+\f
+/* Assembler directives. */
-/* The lda macro differs from the lda instruction in that it handles
- most simple expressions, particualrly symbol address loads and
- large constants. */
+/* Handle the .text pseudo-op. This is like the usual one, but it
+ clears alpha_insn_label and restores auto alignment. */
static void
-emit_lda (tok, ntok, unused)
- const expressionS *tok;
- int ntok;
- const PTR unused ATTRIBUTE_UNUSED;
+s_alpha_text (int i)
{
- int basereg;
-
- if (ntok == 2)
- basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register);
- else
- basereg = tok[2].X_add_number;
+#ifdef OBJ_ELF
+ obj_elf_text (i);
+#else
+ s_text (i);
+#endif
+#ifdef OBJ_EVAX
+ {
+ symbolS * symbolP;
- (void) load_expression (tok[0].X_add_number, &tok[1], &basereg, NULL);
+ symbolP = symbol_find (".text");
+ if (symbolP == NULL)
+ {
+ symbolP = symbol_make (".text");
+ S_SET_SEGMENT (symbolP, text_section);
+ symbol_table_insert (symbolP);
+ }
+ }
+#endif
+ alpha_insn_label = NULL;
+ alpha_auto_align_on = 1;
+ alpha_current_align = 0;
}
-/* The ldah macro differs from the ldah instruction in that it has $31
- as an implied base register. */
+/* Handle the .data pseudo-op. This is like the usual one, but it
+ clears alpha_insn_label and restores auto alignment. */
static void
-emit_ldah (tok, ntok, unused)
- const expressionS *tok;
- int ntok ATTRIBUTE_UNUSED;
- const PTR unused ATTRIBUTE_UNUSED;
+s_alpha_data (int i)
{
- expressionS newtok[3];
-
- newtok[0] = tok[0];
- newtok[1] = tok[1];
- set_tok_preg (newtok[2], AXP_REG_ZERO);
-
- assemble_tokens ("ldah", newtok, 3, 0);
+#ifdef OBJ_ELF
+ obj_elf_data (i);
+#else
+ s_data (i);
+#endif
+ alpha_insn_label = NULL;
+ alpha_auto_align_on = 1;
+ alpha_current_align = 0;
}
-/* Handle all "simple" integer register loads -- ldq, ldq_l, ldq_u,
- etc. They differ from the real instructions in that they do simple
- expressions like the lda macro. */
+#if defined (OBJ_ECOFF) || defined (OBJ_EVAX)
+
+/* Handle the OSF/1 and openVMS .comm pseudo quirks. */
static void
-emit_ir_load (tok, ntok, opname)
- const expressionS *tok;
- int ntok;
- const PTR opname;
+s_alpha_comm (int ignore ATTRIBUTE_UNUSED)
{
- int basereg;
- long lituse;
- expressionS newtok[3];
- struct alpha_insn insn;
-
- if (ntok == 2)
- basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register);
- else
- basereg = tok[2].X_add_number;
+ char *name;
+ char c;
+ char *p;
+ offsetT size;
+ symbolS *symbolP;
+#ifdef OBJ_EVAX
+ offsetT temp;
+ int log_align = 0;
+#endif
- lituse = load_expression (tok[0].X_add_number, &tok[1], &basereg,
- &newtok[1]);
+ name = input_line_pointer;
+ c = get_symbol_end ();
- newtok[0] = tok[0];
- set_tok_preg (newtok[2], basereg);
+ /* Just after name is now '\0'. */
+ p = input_line_pointer;
+ *p = c;
- assemble_tokens_to_insn ((const char *) opname, newtok, 3, &insn);
+ SKIP_WHITESPACE ();
- if (lituse)
+ /* Alpha OSF/1 compiler doesn't provide the comma, gcc does. */
+ if (*input_line_pointer == ',')
{
- assert (insn.nfixups < MAX_INSN_FIXUPS);
- insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
- insn.fixups[insn.nfixups].exp.X_op = O_absent;
- insn.nfixups++;
- insn.sequence = lituse;
+ input_line_pointer++;
+ SKIP_WHITESPACE ();
+ }
+ if ((size = get_absolute_expression ()) < 0)
+ {
+ as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
+ ignore_rest_of_line ();
+ return;
}
- emit_insn (&insn);
-}
-
-/* Handle fp register loads, and both integer and fp register stores.
- Again, we handle simple expressions. */
+ *p = 0;
+ symbolP = symbol_find_or_make (name);
+ *p = c;
-static void
-emit_loadstore (tok, ntok, opname)
- const expressionS *tok;
- int ntok;
- const PTR opname;
-{
- int basereg;
- long lituse;
- expressionS newtok[3];
- struct alpha_insn insn;
+ if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
+ {
+ as_bad (_("Ignoring attempt to re-define symbol"));
+ ignore_rest_of_line ();
+ return;
+ }
- if (ntok == 2)
- basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register);
+#ifdef OBJ_EVAX
+ if (*input_line_pointer != ',')
+ temp = 8; /* Default alignment. */
else
- basereg = tok[2].X_add_number;
+ {
+ input_line_pointer++;
+ SKIP_WHITESPACE ();
+ temp = get_absolute_expression ();
+ }
- if (tok[1].X_op != O_constant || !range_signed_16 (tok[1].X_add_number))
+ /* ??? Unlike on OSF/1, the alignment factor is not in log units. */
+ while ((temp >>= 1) != 0)
+ ++log_align;
+
+ if (*input_line_pointer == ',')
{
- if (alpha_noat_on)
- as_bad (_("macro requires $at register while noat in effect"));
+ /* Extended form of the directive
+
+ .comm symbol, size, alignment, section
+
+ where the "common" semantics is transferred to the section.
+ The symbol is effectively an alias for the section name. */
+
+ segT sec;
+ char *sec_name;
+ symbolS *sec_symbol;
+ segT current_seg = now_seg;
+ subsegT current_subseg = now_subseg;
+ int cur_size;
+
+ input_line_pointer++;
+ SKIP_WHITESPACE ();
+ sec_name = s_alpha_section_name ();
+ sec_symbol = symbol_find_or_make (sec_name);
+ sec = subseg_new (sec_name, 0);
+ S_SET_SEGMENT (sec_symbol, sec);
+ symbol_get_bfdsym (sec_symbol)->flags |= BSF_SECTION_SYM;
+ bfd_vms_set_section_flags (stdoutput, sec,
+ EGPS_S_V_OVR | EGPS_S_V_GBL | EGPS_S_V_NOMOD);
+ record_alignment (sec, log_align);
+
+ /* Reuse stab_string_size to store the size of the section. */
+ cur_size = seg_info (sec)->stabu.stab_string_size;
+ if ((int) size > cur_size)
+ {
+ char *pfrag
+ = frag_var (rs_fill, 1, 1, (relax_substateT)0, NULL,
+ (valueT)size - (valueT)cur_size, NULL);
+ *pfrag = 0;
+ seg_info (sec)->stabu.stab_string_size = (int)size;
+ }
- lituse = load_expression (AXP_REG_AT, &tok[1], &basereg, &newtok[1]);
+ S_SET_SEGMENT (symbolP, sec);
+
+ subseg_set (current_seg, current_subseg);
}
else
{
- newtok[1] = tok[1];
- lituse = 0;
- }
+ /* Regular form of the directive
- newtok[0] = tok[0];
- set_tok_preg (newtok[2], basereg);
+ .comm symbol, size, alignment
- assemble_tokens_to_insn ((const char *) opname, newtok, 3, &insn);
+ where the "common" semantics in on the symbol.
+ These symbols are assembled in the .bss section. */
- if (lituse)
- {
- assert (insn.nfixups < MAX_INSN_FIXUPS);
- insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
- insn.fixups[insn.nfixups].exp.X_op = O_absent;
- insn.nfixups++;
- insn.sequence = lituse;
- }
+ char *pfrag;
+ segT current_seg = now_seg;
+ subsegT current_subseg = now_subseg;
- emit_insn (&insn);
-}
+ subseg_set (bss_section, 1);
+ frag_align (log_align, 0, 0);
+ record_alignment (bss_section, log_align);
-/* Load a half-word or byte as an unsigned value. */
+ symbolP->sy_frag = frag_now;
+ pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP,
+ size, NULL);
+ *pfrag = 0;
-static void
-emit_ldXu (tok, ntok, vlgsize)
- const expressionS *tok;
- int ntok;
- const PTR vlgsize;
-{
- if (alpha_target & AXP_OPCODE_BWX)
- emit_ir_load (tok, ntok, ldXu_op[(long) vlgsize]);
+ S_SET_SEGMENT (symbolP, bss_section);
+
+ subseg_set (current_seg, current_subseg);
+ }
+#endif
+
+ if (S_GET_VALUE (symbolP))
+ {
+ if (S_GET_VALUE (symbolP) != (valueT) size)
+ as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
+ S_GET_NAME (symbolP),
+ (long) S_GET_VALUE (symbolP),
+ (long) size);
+ }
else
{
- expressionS newtok[3];
- struct alpha_insn insn;
- int basereg;
- long lituse;
-
- if (alpha_noat_on)
- as_bad (_("macro requires $at register while noat in effect"));
-
- if (ntok == 2)
- basereg = (tok[1].X_op == O_constant
- ? AXP_REG_ZERO : alpha_gp_register);
- else
- basereg = tok[2].X_add_number;
+#ifndef OBJ_EVAX
+ S_SET_VALUE (symbolP, (valueT) size);
+#endif
+ S_SET_EXTERNAL (symbolP);
+ }
+
+#ifndef OBJ_EVAX
+ know (symbolP->sy_frag == &zero_address_frag);
+#endif
+ demand_empty_rest_of_line ();
+}
- /* emit "lda $at, exp" */
+#endif /* ! OBJ_ELF */
- lituse = load_expression (AXP_REG_AT, &tok[1], &basereg, NULL);
+#ifdef OBJ_ECOFF
- /* emit "ldq_u targ, 0($at)" */
+/* Handle the .rdata pseudo-op. This is like the usual one, but it
+ clears alpha_insn_label and restores auto alignment. */
- newtok[0] = tok[0];
- set_tok_const (newtok[1], 0);
- set_tok_preg (newtok[2], basereg);
- assemble_tokens_to_insn ("ldq_u", newtok, 3, &insn);
+static void
+s_alpha_rdata (int ignore ATTRIBUTE_UNUSED)
+{
+ int temp;
- if (lituse)
- {
- assert (insn.nfixups < MAX_INSN_FIXUPS);
- insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
- insn.fixups[insn.nfixups].exp.X_op = O_absent;
- insn.nfixups++;
- insn.sequence = lituse;
- }
+ temp = get_absolute_expression ();
+ subseg_new (".rdata", 0);
+ demand_empty_rest_of_line ();
+ alpha_insn_label = NULL;
+ alpha_auto_align_on = 1;
+ alpha_current_align = 0;
+}
- emit_insn (&insn);
+#endif
- /* emit "extXl targ, $at, targ" */
+#ifdef OBJ_ECOFF
- set_tok_reg (newtok[1], basereg);
- newtok[2] = newtok[0];
- assemble_tokens_to_insn (extXl_op[(long) vlgsize], newtok, 3, &insn);
+/* Handle the .sdata pseudo-op. This is like the usual one, but it
+ clears alpha_insn_label and restores auto alignment. */
- if (lituse)
- {
- assert (insn.nfixups < MAX_INSN_FIXUPS);
- insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BYTOFF;
- insn.fixups[insn.nfixups].exp.X_op = O_absent;
- insn.nfixups++;
- insn.sequence = lituse;
- }
+static void
+s_alpha_sdata (int ignore ATTRIBUTE_UNUSED)
+{
+ int temp;
- emit_insn (&insn);
- }
+ temp = get_absolute_expression ();
+ subseg_new (".sdata", 0);
+ demand_empty_rest_of_line ();
+ alpha_insn_label = NULL;
+ alpha_auto_align_on = 1;
+ alpha_current_align = 0;
}
+#endif
-/* Load a half-word or byte as a signed value. */
+#ifdef OBJ_ELF
+struct alpha_elf_frame_data
+{
+ symbolS *func_sym;
+ symbolS *func_end_sym;
+ symbolS *prologue_sym;
+ unsigned int mask;
+ unsigned int fmask;
+ int fp_regno;
+ int ra_regno;
+ offsetT frame_size;
+ offsetT mask_offset;
+ offsetT fmask_offset;
+
+ struct alpha_elf_frame_data *next;
+};
+
+static struct alpha_elf_frame_data *all_frame_data;
+static struct alpha_elf_frame_data **plast_frame_data = &all_frame_data;
+static struct alpha_elf_frame_data *cur_frame_data;
+
+/* Handle the .section pseudo-op. This is like the usual one, but it
+ clears alpha_insn_label and restores auto alignment. */
static void
-emit_ldX (tok, ntok, vlgsize)
- const expressionS *tok;
- int ntok;
- const PTR vlgsize;
+s_alpha_section (int ignore ATTRIBUTE_UNUSED)
{
- emit_ldXu (tok, ntok, vlgsize);
- assemble_tokens (sextX_op[(long) vlgsize], tok, 1, 1);
-}
+ obj_elf_section (ignore);
-/* Load an integral value from an unaligned address as an unsigned
- value. */
+ alpha_insn_label = NULL;
+ alpha_auto_align_on = 1;
+ alpha_current_align = 0;
+}
static void
-emit_uldXu (tok, ntok, vlgsize)
- const expressionS *tok;
- int ntok;
- const PTR vlgsize;
+s_alpha_ent (int dummy ATTRIBUTE_UNUSED)
{
- long lgsize = (long) vlgsize;
- expressionS newtok[3];
+ if (ECOFF_DEBUGGING)
+ ecoff_directive_ent (0);
+ else
+ {
+ char *name, name_end;
+ name = input_line_pointer;
+ name_end = get_symbol_end ();
- if (alpha_noat_on)
- as_bad (_("macro requires $at register while noat in effect"));
+ if (! is_name_beginner (*name))
+ {
+ as_warn (_(".ent directive has no name"));
+ *input_line_pointer = name_end;
+ }
+ else
+ {
+ symbolS *sym;
- /* emit "lda $at, exp" */
+ if (cur_frame_data)
+ as_warn (_("nested .ent directives"));
- memcpy (newtok, tok, sizeof (expressionS) * ntok);
- newtok[0].X_add_number = AXP_REG_AT;
- assemble_tokens ("lda", newtok, ntok, 1);
+ sym = symbol_find_or_make (name);
+ symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
- /* emit "ldq_u $t9, 0($at)" */
+ cur_frame_data = (struct alpha_elf_frame_data *)
+ calloc (1, sizeof (*cur_frame_data));
+ cur_frame_data->func_sym = sym;
- set_tok_reg (newtok[0], AXP_REG_T9);
- set_tok_const (newtok[1], 0);
- set_tok_preg (newtok[2], AXP_REG_AT);
- assemble_tokens ("ldq_u", newtok, 3, 1);
+ /* Provide sensible defaults. */
+ cur_frame_data->fp_regno = 30; /* sp */
+ cur_frame_data->ra_regno = 26; /* ra */
- /* emit "ldq_u $t10, size-1($at)" */
+ *plast_frame_data = cur_frame_data;
+ plast_frame_data = &cur_frame_data->next;
- set_tok_reg (newtok[0], AXP_REG_T10);
- set_tok_const (newtok[1], (1 << lgsize) - 1);
- assemble_tokens ("ldq_u", newtok, 3, 1);
+ /* The .ent directive is sometimes followed by a number. Not sure
+ what it really means, but ignore it. */
+ *input_line_pointer = name_end;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == ',')
+ {
+ input_line_pointer++;
+ SKIP_WHITESPACE ();
+ }
+ if (ISDIGIT (*input_line_pointer) || *input_line_pointer == '-')
+ (void) get_absolute_expression ();
+ }
+ demand_empty_rest_of_line ();
+ }
+}
- /* emit "extXl $t9, $at, $t9" */
+static void
+s_alpha_end (int dummy ATTRIBUTE_UNUSED)
+{
+ if (ECOFF_DEBUGGING)
+ ecoff_directive_end (0);
+ else
+ {
+ char *name, name_end;
+ name = input_line_pointer;
+ name_end = get_symbol_end ();
- set_tok_reg (newtok[0], AXP_REG_T9);
- set_tok_reg (newtok[1], AXP_REG_AT);
- set_tok_reg (newtok[2], AXP_REG_T9);
- assemble_tokens (extXl_op[lgsize], newtok, 3, 1);
+ if (! is_name_beginner (*name))
+ {
+ as_warn (_(".end directive has no name"));
+ *input_line_pointer = name_end;
+ }
+ else
+ {
+ symbolS *sym;
- /* emit "extXh $t10, $at, $t10" */
+ sym = symbol_find (name);
+ if (!cur_frame_data)
+ as_warn (_(".end directive without matching .ent"));
+ else if (sym != cur_frame_data->func_sym)
+ as_warn (_(".end directive names different symbol than .ent"));
- set_tok_reg (newtok[0], AXP_REG_T10);
- set_tok_reg (newtok[2], AXP_REG_T10);
- assemble_tokens (extXh_op[lgsize], newtok, 3, 1);
+ /* Create an expression to calculate the size of the function. */
+ if (sym && cur_frame_data)
+ {
+ OBJ_SYMFIELD_TYPE *obj = symbol_get_obj (sym);
+ expressionS *exp = (expressionS *) xmalloc (sizeof (expressionS));
- /* emit "or $t9, $t10, targ" */
+ obj->size = exp;
+ exp->X_op = O_subtract;
+ exp->X_add_symbol = symbol_temp_new_now ();
+ exp->X_op_symbol = sym;
+ exp->X_add_number = 0;
- set_tok_reg (newtok[0], AXP_REG_T9);
- set_tok_reg (newtok[1], AXP_REG_T10);
- newtok[2] = tok[0];
- assemble_tokens ("or", newtok, 3, 1);
-}
+ cur_frame_data->func_end_sym = exp->X_add_symbol;
+ }
-/* Load an integral value from an unaligned address as a signed value.
- Note that quads should get funneled to the unsigned load since we
- don't have to do the sign extension. */
+ cur_frame_data = NULL;
-static void
-emit_uldX (tok, ntok, vlgsize)
- const expressionS *tok;
- int ntok;
- const PTR vlgsize;
-{
- emit_uldXu (tok, ntok, vlgsize);
- assemble_tokens (sextX_op[(long) vlgsize], tok, 1, 1);
+ *input_line_pointer = name_end;
+ }
+ demand_empty_rest_of_line ();
+ }
}
-/* Implement the ldil macro. */
-
static void
-emit_ldil (tok, ntok, unused)
- const expressionS *tok;
- int ntok;
- const PTR unused ATTRIBUTE_UNUSED;
+s_alpha_mask (int fp)
{
- expressionS newtok[2];
+ if (ECOFF_DEBUGGING)
+ {
+ if (fp)
+ ecoff_directive_fmask (0);
+ else
+ ecoff_directive_mask (0);
+ }
+ else
+ {
+ long val;
+ offsetT offset;
- memcpy (newtok, tok, sizeof (newtok));
- newtok[1].X_add_number = sign_extend_32 (tok[1].X_add_number);
+ if (!cur_frame_data)
+ {
+ if (fp)
+ as_warn (_(".fmask outside of .ent"));
+ else
+ as_warn (_(".mask outside of .ent"));
+ discard_rest_of_line ();
+ return;
+ }
- assemble_tokens ("lda", newtok, ntok, 1);
-}
+ if (get_absolute_expression_and_terminator (&val) != ',')
+ {
+ if (fp)
+ as_warn (_("bad .fmask directive"));
+ else
+ as_warn (_("bad .mask directive"));
+ --input_line_pointer;
+ discard_rest_of_line ();
+ return;
+ }
-/* Store a half-word or byte. */
+ offset = get_absolute_expression ();
+ demand_empty_rest_of_line ();
+
+ if (fp)
+ {
+ cur_frame_data->fmask = val;
+ cur_frame_data->fmask_offset = offset;
+ }
+ else
+ {
+ cur_frame_data->mask = val;
+ cur_frame_data->mask_offset = offset;
+ }
+ }
+}
static void
-emit_stX (tok, ntok, vlgsize)
- const expressionS *tok;
- int ntok;
- const PTR vlgsize;
+s_alpha_frame (int dummy ATTRIBUTE_UNUSED)
{
- int lgsize = (int) (long) vlgsize;
-
- if (alpha_target & AXP_OPCODE_BWX)
- emit_loadstore (tok, ntok, stX_op[lgsize]);
+ if (ECOFF_DEBUGGING)
+ ecoff_directive_frame (0);
else
{
- expressionS newtok[3];
- struct alpha_insn insn;
- int basereg;
- long lituse;
+ long val;
- if (alpha_noat_on)
- as_bad (_("macro requires $at register while noat in effect"));
+ if (!cur_frame_data)
+ {
+ as_warn (_(".frame outside of .ent"));
+ discard_rest_of_line ();
+ return;
+ }
- if (ntok == 2)
- basereg = (tok[1].X_op == O_constant
- ? AXP_REG_ZERO : alpha_gp_register);
- else
- basereg = tok[2].X_add_number;
+ cur_frame_data->fp_regno = tc_get_register (1);
- /* emit "lda $at, exp" */
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer++ != ','
+ || get_absolute_expression_and_terminator (&val) != ',')
+ {
+ as_warn (_("bad .frame directive"));
+ --input_line_pointer;
+ discard_rest_of_line ();
+ return;
+ }
+ cur_frame_data->frame_size = val;
- lituse = load_expression (AXP_REG_AT, &tok[1], &basereg, NULL);
+ cur_frame_data->ra_regno = tc_get_register (0);
- /* emit "ldq_u $t9, 0($at)" */
+ /* Next comes the "offset of saved $a0 from $sp". In gcc terms
+ this is current_function_pretend_args_size. There's no place
+ to put this value, so ignore it. */
+ s_ignore (42);
+ }
+}
- set_tok_reg (newtok[0], AXP_REG_T9);
- set_tok_const (newtok[1], 0);
- set_tok_preg (newtok[2], basereg);
- assemble_tokens_to_insn ("ldq_u", newtok, 3, &insn);
+static void
+s_alpha_prologue (int ignore ATTRIBUTE_UNUSED)
+{
+ symbolS *sym;
+ int arg;
- if (lituse)
- {
- assert (insn.nfixups < MAX_INSN_FIXUPS);
- insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
- insn.fixups[insn.nfixups].exp.X_op = O_absent;
- insn.nfixups++;
- insn.sequence = lituse;
- }
+ arg = get_absolute_expression ();
+ demand_empty_rest_of_line ();
+ alpha_prologue_label = symbol_new
+ (FAKE_LABEL_NAME, now_seg, (valueT) frag_now_fix (), frag_now);
- emit_insn (&insn);
+ if (ECOFF_DEBUGGING)
+ sym = ecoff_get_cur_proc_sym ();
+ else
+ sym = cur_frame_data ? cur_frame_data->func_sym : NULL;
- /* emit "insXl src, $at, $t10" */
+ if (sym == NULL)
+ {
+ as_bad (_(".prologue directive without a preceding .ent directive"));
+ return;
+ }
- newtok[0] = tok[0];
- set_tok_reg (newtok[1], basereg);
- set_tok_reg (newtok[2], AXP_REG_T10);
- assemble_tokens_to_insn (insXl_op[lgsize], newtok, 3, &insn);
+ switch (arg)
+ {
+ case 0: /* No PV required. */
+ S_SET_OTHER (sym, STO_ALPHA_NOPV
+ | (S_GET_OTHER (sym) & ~STO_ALPHA_STD_GPLOAD));
+ break;
+ case 1: /* Std GP load. */
+ S_SET_OTHER (sym, STO_ALPHA_STD_GPLOAD
+ | (S_GET_OTHER (sym) & ~STO_ALPHA_STD_GPLOAD));
+ break;
+ case 2: /* Non-std use of PV. */
+ break;
- if (lituse)
- {
- assert (insn.nfixups < MAX_INSN_FIXUPS);
- insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BYTOFF;
- insn.fixups[insn.nfixups].exp.X_op = O_absent;
- insn.nfixups++;
- insn.sequence = lituse;
- }
+ default:
+ as_bad (_("Invalid argument %d to .prologue."), arg);
+ break;
+ }
- emit_insn (&insn);
+ if (cur_frame_data)
+ cur_frame_data->prologue_sym = symbol_temp_new_now ();
+}
- /* emit "mskXl $t9, $at, $t9" */
+static char *first_file_directive;
- set_tok_reg (newtok[0], AXP_REG_T9);
- newtok[2] = newtok[0];
- assemble_tokens_to_insn (mskXl_op[lgsize], newtok, 3, &insn);
+static void
+s_alpha_file (int ignore ATTRIBUTE_UNUSED)
+{
+ /* Save the first .file directive we see, so that we can change our
+ minds about whether ecoff debugging should or shouldn't be enabled. */
+ if (alpha_flag_mdebug < 0 && ! first_file_directive)
+ {
+ char *start = input_line_pointer;
+ size_t len;
- if (lituse)
- {
- assert (insn.nfixups < MAX_INSN_FIXUPS);
- insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BYTOFF;
- insn.fixups[insn.nfixups].exp.X_op = O_absent;
- insn.nfixups++;
- insn.sequence = lituse;
- }
+ discard_rest_of_line ();
- emit_insn (&insn);
+ len = input_line_pointer - start;
+ first_file_directive = (char *) xmalloc (len + 1);
+ memcpy (first_file_directive, start, len);
+ first_file_directive[len] = '\0';
+
+ input_line_pointer = start;
+ }
- /* emit "or $t9, $t10, $t9" */
+ if (ECOFF_DEBUGGING)
+ ecoff_directive_file (0);
+ else
+ dwarf2_directive_file (0);
+}
- set_tok_reg (newtok[1], AXP_REG_T10);
- assemble_tokens ("or", newtok, 3, 1);
+static void
+s_alpha_loc (int ignore ATTRIBUTE_UNUSED)
+{
+ if (ECOFF_DEBUGGING)
+ ecoff_directive_loc (0);
+ else
+ dwarf2_directive_loc (0);
+}
- /* emit "stq_u $t9, 0($at) */
+static void
+s_alpha_stab (int n)
+{
+ /* If we've been undecided about mdebug, make up our minds in favour. */
+ if (alpha_flag_mdebug < 0)
+ {
+ segT sec = subseg_new (".mdebug", 0);
+ bfd_set_section_flags (stdoutput, sec, SEC_HAS_CONTENTS | SEC_READONLY);
+ bfd_set_section_alignment (stdoutput, sec, 3);
- set_tok_const(newtok[1], 0);
- set_tok_preg (newtok[2], AXP_REG_AT);
- assemble_tokens_to_insn ("stq_u", newtok, 3, &insn);
+ ecoff_read_begin_hook ();
- if (lituse)
+ if (first_file_directive)
{
- assert (insn.nfixups < MAX_INSN_FIXUPS);
- insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE;
- insn.fixups[insn.nfixups].exp.X_op = O_absent;
- insn.nfixups++;
- insn.sequence = lituse;
+ char *save_ilp = input_line_pointer;
+ input_line_pointer = first_file_directive;
+ ecoff_directive_file (0);
+ input_line_pointer = save_ilp;
+ free (first_file_directive);
}
- emit_insn (&insn);
+ alpha_flag_mdebug = 1;
}
+ s_stab (n);
}
-/* Store an integer to an unaligned address. */
-
static void
-emit_ustX (tok, ntok, vlgsize)
- const expressionS *tok;
- int ntok;
- const PTR vlgsize;
+s_alpha_coff_wrapper (int which)
{
- int lgsize = (int) (long) vlgsize;
- expressionS newtok[3];
-
- /* emit "lda $at, exp" */
-
- memcpy (newtok, tok, sizeof (expressionS) * ntok);
- newtok[0].X_add_number = AXP_REG_AT;
- assemble_tokens ("lda", newtok, ntok, 1);
-
- /* emit "ldq_u $9, 0($at)" */
+ static void (* const fns[]) (int) = {
+ ecoff_directive_begin,
+ ecoff_directive_bend,
+ ecoff_directive_def,
+ ecoff_directive_dim,
+ ecoff_directive_endef,
+ ecoff_directive_scl,
+ ecoff_directive_tag,
+ ecoff_directive_val,
+ };
- set_tok_reg (newtok[0], AXP_REG_T9);
- set_tok_const (newtok[1], 0);
- set_tok_preg (newtok[2], AXP_REG_AT);
- assemble_tokens ("ldq_u", newtok, 3, 1);
+ gas_assert (which >= 0 && which < (int) (sizeof (fns)/sizeof (*fns)));
- /* emit "ldq_u $10, size-1($at)" */
+ if (ECOFF_DEBUGGING)
+ (*fns[which]) (0);
+ else
+ {
+ as_bad (_("ECOFF debugging is disabled."));
+ ignore_rest_of_line ();
+ }
+}
- set_tok_reg (newtok[0], AXP_REG_T10);
- set_tok_const (newtok[1], (1 << lgsize) - 1);
- assemble_tokens ("ldq_u", newtok, 3, 1);
+/* Called at the end of assembly. Here we emit unwind info for frames
+ unless the compiler has done it for us. */
- /* emit "insXl src, $at, $t11" */
+void
+alpha_elf_md_end (void)
+{
+ struct alpha_elf_frame_data *p;
- newtok[0] = tok[0];
- set_tok_reg (newtok[1], AXP_REG_AT);
- set_tok_reg (newtok[2], AXP_REG_T11);
- assemble_tokens (insXl_op[lgsize], newtok, 3, 1);
+ if (cur_frame_data)
+ as_warn (_(".ent directive without matching .end"));
- /* emit "insXh src, $at, $t12" */
+ /* If someone has generated the unwind info themselves, great. */
+ if (bfd_get_section_by_name (stdoutput, ".eh_frame") != NULL)
+ return;
- set_tok_reg (newtok[2], AXP_REG_T12);
- assemble_tokens (insXh_op[lgsize], newtok, 3, 1);
+ /* Generate .eh_frame data for the unwind directives specified. */
+ for (p = all_frame_data; p ; p = p->next)
+ if (p->prologue_sym)
+ {
+ /* Create a temporary symbol at the same location as our
+ function symbol. This prevents problems with globals. */
+ cfi_new_fde (symbol_temp_new (S_GET_SEGMENT (p->func_sym),
+ S_GET_VALUE (p->func_sym),
+ symbol_get_frag (p->func_sym)));
+
+ cfi_set_return_column (p->ra_regno);
+ cfi_add_CFA_def_cfa_register (30);
+ if (p->fp_regno != 30 || p->mask || p->fmask || p->frame_size)
+ {
+ unsigned int mask;
+ offsetT offset;
- /* emit "mskXl $t9, $at, $t9" */
+ cfi_add_advance_loc (p->prologue_sym);
- set_tok_reg (newtok[0], AXP_REG_T9);
- newtok[2] = newtok[0];
- assemble_tokens (mskXl_op[lgsize], newtok, 3, 1);
+ if (p->fp_regno != 30)
+ if (p->frame_size != 0)
+ cfi_add_CFA_def_cfa (p->fp_regno, p->frame_size);
+ else
+ cfi_add_CFA_def_cfa_register (p->fp_regno);
+ else if (p->frame_size != 0)
+ cfi_add_CFA_def_cfa_offset (p->frame_size);
- /* emit "mskXh $t10, $at, $t10" */
+ mask = p->mask;
+ offset = p->mask_offset;
- set_tok_reg (newtok[0], AXP_REG_T10);
- newtok[2] = newtok[0];
- assemble_tokens (mskXh_op[lgsize], newtok, 3, 1);
+ /* Recall that $26 is special-cased and stored first. */
+ if ((mask >> 26) & 1)
+ {
+ cfi_add_CFA_offset (26, offset);
+ offset += 8;
+ mask &= ~(1 << 26);
+ }
+ while (mask)
+ {
+ unsigned int i;
+ i = mask & -mask;
+ mask ^= i;
+ i = ffs (i) - 1;
- /* emit "or $t9, $t11, $t9" */
+ cfi_add_CFA_offset (i, offset);
+ offset += 8;
+ }
- set_tok_reg (newtok[0], AXP_REG_T9);
- set_tok_reg (newtok[1], AXP_REG_T11);
- newtok[2] = newtok[0];
- assemble_tokens ("or", newtok, 3, 1);
+ mask = p->fmask;
+ offset = p->fmask_offset;
+ while (mask)
+ {
+ unsigned int i;
+ i = mask & -mask;
+ mask ^= i;
+ i = ffs (i) - 1;
- /* emit "or $t10, $t12, $t10" */
+ cfi_add_CFA_offset (i + 32, offset);
+ offset += 8;
+ }
+ }
- set_tok_reg (newtok[0], AXP_REG_T10);
- set_tok_reg (newtok[1], AXP_REG_T12);
- newtok[2] = newtok[0];
- assemble_tokens ("or", newtok, 3, 1);
+ cfi_end_fde (p->func_end_sym);
+ }
+}
- /* emit "stq_u $t9, 0($at)" */
+static void
+s_alpha_usepv (int unused ATTRIBUTE_UNUSED)
+{
+ char *name, name_end;
+ char *which, which_end;
+ symbolS *sym;
+ int other;
- set_tok_reg (newtok[0], AXP_REG_T9);
- set_tok_const (newtok[1], 0);
- set_tok_preg (newtok[2], AXP_REG_AT);
- assemble_tokens ("stq_u", newtok, 3, 1);
+ name = input_line_pointer;
+ name_end = get_symbol_end ();
- /* emit "stq_u $t10, size-1($at)" */
+ if (! is_name_beginner (*name))
+ {
+ as_bad (_(".usepv directive has no name"));
+ *input_line_pointer = name_end;
+ ignore_rest_of_line ();
+ return;
+ }
- set_tok_reg (newtok[0], AXP_REG_T10);
- set_tok_const (newtok[1], (1 << lgsize) - 1);
- assemble_tokens ("stq_u", newtok, 3, 1);
-}
+ sym = symbol_find_or_make (name);
+ *input_line_pointer++ = name_end;
-/* Sign extend a half-word or byte. The 32-bit sign extend is
- implemented as "addl $31, $r, $t" in the opcode table. */
+ if (name_end != ',')
+ {
+ as_bad (_(".usepv directive has no type"));
+ ignore_rest_of_line ();
+ return;
+ }
-static void
-emit_sextX (tok, ntok, vlgsize)
- const expressionS *tok;
- int ntok;
- const PTR vlgsize;
-{
- long lgsize = (long) vlgsize;
+ SKIP_WHITESPACE ();
+ which = input_line_pointer;
+ which_end = get_symbol_end ();
- if (alpha_target & AXP_OPCODE_BWX)
- assemble_tokens (sextX_op[lgsize], tok, ntok, 0);
+ if (strcmp (which, "no") == 0)
+ other = STO_ALPHA_NOPV;
+ else if (strcmp (which, "std") == 0)
+ other = STO_ALPHA_STD_GPLOAD;
else
{
- int bitshift = 64 - 8 * (1 << lgsize);
- expressionS newtok[3];
+ as_bad (_("unknown argument for .usepv"));
+ other = 0;
+ }
- /* emit "sll src,bits,dst" */
+ *input_line_pointer = which_end;
+ demand_empty_rest_of_line ();
- newtok[0] = tok[0];
- set_tok_const (newtok[1], bitshift);
- newtok[2] = tok[ntok - 1];
- assemble_tokens ("sll", newtok, 3, 1);
+ S_SET_OTHER (sym, other | (S_GET_OTHER (sym) & ~STO_ALPHA_STD_GPLOAD));
+}
+#endif /* OBJ_ELF */
- /* emit "sra dst,bits,dst" */
+/* Standard calling conventions leaves the CFA at $30 on entry. */
- newtok[0] = newtok[2];
- assemble_tokens ("sra", newtok, 3, 1);
- }
+void
+alpha_cfi_frame_initial_instructions (void)
+{
+ cfi_add_CFA_def_cfa_register (30);
}
-/* Implement the division and modulus macros. */
-
#ifdef OBJ_EVAX
-/* Make register usage like in normal procedure call.
- Don't clobber PV and RA. */
-
-static void
-emit_division (tok, ntok, symname)
- const expressionS *tok;
- int ntok;
- const PTR symname;
+/* Get name of section. */
+static char *
+s_alpha_section_name (void)
{
- /* DIVISION and MODULUS. Yech.
- *
- * Convert
- * OP x,y,result
- * to
- * mov x,R16 # if x != R16
- * mov y,R17 # if y != R17
- * lda AT,__OP
- * jsr AT,(AT),0
- * mov R0,result
- *
- * with appropriate optimizations if R0,R16,R17 are the registers
- * specified by the compiler.
- */
-
- int xr, yr, rr;
- symbolS *sym;
- expressionS newtok[3];
+ char *name;
- xr = regno (tok[0].X_add_number);
- yr = regno (tok[1].X_add_number);
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == '"')
+ {
+ int dummy;
- if (ntok < 3)
- rr = xr;
+ name = demand_copy_C_string (&dummy);
+ if (name == NULL)
+ {
+ ignore_rest_of_line ();
+ return NULL;
+ }
+ }
else
- rr = regno (tok[2].X_add_number);
-
- /* Move the operands into the right place */
- if (yr == AXP_REG_R16 && xr == AXP_REG_R17)
{
- /* They are in exactly the wrong order -- swap through AT */
+ char *end = input_line_pointer;
- if (alpha_noat_on)
- as_bad (_("macro requires $at register while noat in effect"));
+ while (0 == strchr ("\n\t,; ", *end))
+ end++;
+ if (end == input_line_pointer)
+ {
+ as_warn (_("missing name"));
+ ignore_rest_of_line ();
+ return NULL;
+ }
- set_tok_reg (newtok[0], AXP_REG_R16);
- set_tok_reg (newtok[1], AXP_REG_AT);
- assemble_tokens ("mov", newtok, 2, 1);
+ name = xmalloc (end - input_line_pointer + 1);
+ memcpy (name, input_line_pointer, end - input_line_pointer);
+ name[end - input_line_pointer] = '\0';
+ input_line_pointer = end;
+ }
+ SKIP_WHITESPACE ();
+ return name;
+}
- set_tok_reg (newtok[0], AXP_REG_R17);
- set_tok_reg (newtok[1], AXP_REG_R16);
- assemble_tokens ("mov", newtok, 2, 1);
+static flagword
+s_alpha_section_word (char *str, size_t len)
+{
+ int no = 0;
+ flagword flag = 0;
- set_tok_reg (newtok[0], AXP_REG_AT);
- set_tok_reg (newtok[1], AXP_REG_R17);
- assemble_tokens ("mov", newtok, 2, 1);
- }
- else
+ if (len == 5 && strncmp (str, "NO", 2) == 0)
{
- if (yr == AXP_REG_R16)
- {
- set_tok_reg (newtok[0], AXP_REG_R16);
- set_tok_reg (newtok[1], AXP_REG_R17);
- assemble_tokens ("mov", newtok, 2, 1);
- }
+ no = 1;
+ str += 2;
+ len -= 2;
+ }
- if (xr != AXP_REG_R16)
+ if (len == 3)
+ {
+ if (strncmp (str, "PIC", 3) == 0)
+ flag = EGPS_S_V_PIC;
+ else if (strncmp (str, "LIB", 3) == 0)
+ flag = EGPS_S_V_LIB;
+ else if (strncmp (str, "OVR", 3) == 0)
+ flag = EGPS_S_V_OVR;
+ else if (strncmp (str, "REL", 3) == 0)
+ flag = EGPS_S_V_REL;
+ else if (strncmp (str, "GBL", 3) == 0)
+ flag = EGPS_S_V_GBL;
+ else if (strncmp (str, "SHR", 3) == 0)
+ flag = EGPS_S_V_SHR;
+ else if (strncmp (str, "EXE", 3) == 0)
+ flag = EGPS_S_V_EXE;
+ else if (strncmp (str, "WRT", 3) == 0)
+ flag = EGPS_S_V_WRT;
+ else if (strncmp (str, "VEC", 3) == 0)
+ flag = EGPS_S_V_VEC;
+ else if (strncmp (str, "MOD", 3) == 0)
{
- set_tok_reg (newtok[0], xr);
- set_tok_reg (newtok[1], AXP_REG_R16);
- assemble_tokens ("mov", newtok, 2, 1);
+ flag = no ? EGPS_S_V_NOMOD : EGPS_S_V_NOMOD << EGPS_S_V_NO_SHIFT;
+ no = 0;
}
+ else if (strncmp (str, "COM", 3) == 0)
+ flag = EGPS_S_V_COM;
+ }
- if (yr != AXP_REG_R16 && yr != AXP_REG_R17)
- {
- set_tok_reg (newtok[0], yr);
- set_tok_reg (newtok[1], AXP_REG_R17);
- assemble_tokens ("mov", newtok, 2, 1);
- }
+ if (flag == 0)
+ {
+ char c = str[len];
+ str[len] = 0;
+ as_warn (_("unknown section attribute %s"), str);
+ str[len] = c;
+ return 0;
}
- sym = symbol_find_or_make ((const char *) symname);
+ if (no)
+ return flag << EGPS_S_V_NO_SHIFT;
+ else
+ return flag;
+}
- set_tok_reg (newtok[0], AXP_REG_AT);
- set_tok_sym (newtok[1], sym, 0);
- assemble_tokens ("lda", newtok, 2, 1);
+/* Handle the section specific pseudo-op. */
- /* Call the division routine */
- set_tok_reg (newtok[0], AXP_REG_AT);
- set_tok_cpreg (newtok[1], AXP_REG_AT);
- set_tok_const (newtok[2], 0);
- assemble_tokens ("jsr", newtok, 3, 1);
+#define EVAX_SECTION_COUNT 5
- /* Move the result to the right place */
- if (rr != AXP_REG_R0)
+static char *section_name[EVAX_SECTION_COUNT + 1] =
+ { "NULL", ".rdata", ".comm", ".link", ".ctors", ".dtors" };
+
+static void
+s_alpha_section (int secid)
+{
+ int temp;
+ char *name, *beg;
+ segT sec;
+ flagword vms_flags = 0;
+ symbolS *symbol;
+
+ if (secid == 0)
{
- set_tok_reg (newtok[0], AXP_REG_R0);
- set_tok_reg (newtok[1], rr);
- assemble_tokens ("mov", newtok, 2, 1);
+ name = s_alpha_section_name ();
+ if (name == NULL)
+ return;
+ sec = subseg_new (name, 0);
+ if (*input_line_pointer == ',')
+ {
+ /* Skip the comma. */
+ ++input_line_pointer;
+ SKIP_WHITESPACE ();
+
+ do
+ {
+ char c;
+
+ SKIP_WHITESPACE ();
+ beg = input_line_pointer;
+ c = get_symbol_end ();
+ *input_line_pointer = c;
+
+ vms_flags |= s_alpha_section_word (beg, input_line_pointer - beg);
+
+ SKIP_WHITESPACE ();
+ }
+ while (*input_line_pointer++ == ',');
+ --input_line_pointer;
+ }
+
+ symbol = symbol_find_or_make (name);
+ S_SET_SEGMENT (symbol, sec);
+ symbol_get_bfdsym (symbol)->flags |= BSF_SECTION_SYM;
+ bfd_vms_set_section_flags (stdoutput, sec, vms_flags);
+ }
+ else
+ {
+ temp = get_absolute_expression ();
+ subseg_new (section_name[secid], 0);
}
-}
-#else /* !OBJ_EVAX */
+ demand_empty_rest_of_line ();
+ alpha_insn_label = NULL;
+ alpha_auto_align_on = 1;
+ alpha_current_align = 0;
+}
static void
-emit_division (tok, ntok, symname)
- const expressionS *tok;
- int ntok;
- const PTR symname;
+s_alpha_literals (int ignore ATTRIBUTE_UNUSED)
{
- /* DIVISION and MODULUS. Yech.
- * Convert
- * OP x,y,result
- * to
- * lda pv,__OP
- * mov x,t10
- * mov y,t11
- * jsr t9,(pv),__OP
- * mov t12,result
- *
- * with appropriate optimizations if t10,t11,t12 are the registers
- * specified by the compiler.
- */
+ subseg_new (".literals", 0);
+ demand_empty_rest_of_line ();
+ alpha_insn_label = NULL;
+ alpha_auto_align_on = 1;
+ alpha_current_align = 0;
+}
- int xr, yr, rr;
- symbolS *sym;
- expressionS newtok[3];
+/* Parse .ent directives. */
- xr = regno (tok[0].X_add_number);
- yr = regno (tok[1].X_add_number);
+static void
+s_alpha_ent (int ignore ATTRIBUTE_UNUSED)
+{
+ symbolS *symbol;
+ expressionS symexpr;
- if (ntok < 3)
- rr = xr;
- else
- rr = regno (tok[2].X_add_number);
+ alpha_evax_proc
+ = (struct alpha_evax_procs *) xmalloc (sizeof (struct alpha_evax_procs));
+
+ alpha_evax_proc->pdsckind = 0;
+ alpha_evax_proc->framereg = -1;
+ alpha_evax_proc->framesize = 0;
+ alpha_evax_proc->rsa_offset = 0;
+ alpha_evax_proc->ra_save = AXP_REG_RA;
+ alpha_evax_proc->fp_save = -1;
+ alpha_evax_proc->imask = 0;
+ alpha_evax_proc->fmask = 0;
+ alpha_evax_proc->prologue = 0;
+ alpha_evax_proc->type = 0;
+ alpha_evax_proc->handler = 0;
+ alpha_evax_proc->handler_data = 0;
- sym = symbol_find_or_make ((const char *) symname);
+ expression (&symexpr);
- /* Move the operands into the right place */
- if (yr == AXP_REG_T10 && xr == AXP_REG_T11)
+ if (symexpr.X_op != O_symbol)
{
- /* They are in exactly the wrong order -- swap through AT */
+ as_fatal (_(".ent directive has no symbol"));
+ demand_empty_rest_of_line ();
+ return;
+ }
- if (alpha_noat_on)
- as_bad (_("macro requires $at register while noat in effect"));
+ symbol = make_expr_symbol (&symexpr);
+ symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION;
+ alpha_evax_proc->symbol = symbol;
- set_tok_reg (newtok[0], AXP_REG_T10);
- set_tok_reg (newtok[1], AXP_REG_AT);
- assemble_tokens ("mov", newtok, 2, 1);
+ (void) hash_insert
+ (alpha_evax_proc_hash,
+ symbol_get_bfdsym (alpha_evax_proc->symbol)->name, (PTR)alpha_evax_proc);
- set_tok_reg (newtok[0], AXP_REG_T11);
- set_tok_reg (newtok[1], AXP_REG_T10);
- assemble_tokens ("mov", newtok, 2, 1);
+ demand_empty_rest_of_line ();
+}
- set_tok_reg (newtok[0], AXP_REG_AT);
- set_tok_reg (newtok[1], AXP_REG_T11);
- assemble_tokens ("mov", newtok, 2, 1);
- }
+static void
+s_alpha_handler (int is_data)
+{
+ if (is_data)
+ alpha_evax_proc->handler_data = get_absolute_expression ();
else
{
- if (yr == AXP_REG_T10)
- {
- set_tok_reg (newtok[0], AXP_REG_T10);
- set_tok_reg (newtok[1], AXP_REG_T11);
- assemble_tokens ("mov", newtok, 2, 1);
- }
+ char *name, name_end;
+ name = input_line_pointer;
+ name_end = get_symbol_end ();
- if (xr != AXP_REG_T10)
+ if (! is_name_beginner (*name))
{
- set_tok_reg (newtok[0], xr);
- set_tok_reg (newtok[1], AXP_REG_T10);
- assemble_tokens ("mov", newtok, 2, 1);
+ as_warn (_(".handler directive has no name"));
+ *input_line_pointer = name_end;
}
-
- if (yr != AXP_REG_T10 && yr != AXP_REG_T11)
+ else
{
- set_tok_reg (newtok[0], yr);
- set_tok_reg (newtok[1], AXP_REG_T11);
- assemble_tokens ("mov", newtok, 2, 1);
+ symbolS *sym;
+
+ sym = symbol_find_or_make (name);
+ symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
+ alpha_evax_proc->handler = sym;
+ *input_line_pointer = name_end;
}
- }
+ }
+ demand_empty_rest_of_line ();
+}
- /* Call the division routine */
- set_tok_reg (newtok[0], AXP_REG_T9);
- set_tok_sym (newtok[1], sym, 0);
- assemble_tokens ("jsr", newtok, 2, 1);
+/* Parse .frame <framreg>,<framesize>,RA,<rsa_offset> directives. */
- /* Reload the GP register */
-#ifdef OBJ_AOUT
-FIXME
-#endif
-#if defined(OBJ_ECOFF) || defined(OBJ_ELF)
- set_tok_reg (newtok[0], alpha_gp_register);
- set_tok_const (newtok[1], 0);
- set_tok_preg (newtok[2], AXP_REG_T9);
- assemble_tokens ("ldgp", newtok, 3, 1);
-#endif
+static void
+s_alpha_frame (int ignore ATTRIBUTE_UNUSED)
+{
+ long val;
- /* Move the result to the right place */
- if (rr != AXP_REG_T12)
+ alpha_evax_proc->framereg = tc_get_register (1);
+
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer++ != ','
+ || get_absolute_expression_and_terminator (&val) != ',')
{
- set_tok_reg (newtok[0], AXP_REG_T12);
- set_tok_reg (newtok[1], rr);
- assemble_tokens ("mov", newtok, 2, 1);
+ as_warn (_("Bad .frame directive 1./2. param"));
+ --input_line_pointer;
+ demand_empty_rest_of_line ();
+ return;
}
-}
-#endif /* !OBJ_EVAX */
+ alpha_evax_proc->framesize = val;
-/* The jsr and jmp macros differ from their instruction counterparts
- in that they can load the target address and default most
- everything. */
+ (void) tc_get_register (1);
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer++ != ',')
+ {
+ as_warn (_("Bad .frame directive 3./4. param"));
+ --input_line_pointer;
+ demand_empty_rest_of_line ();
+ return;
+ }
+ alpha_evax_proc->rsa_offset = get_absolute_expression ();
+}
static void
-emit_jsrjmp (tok, ntok, vopname)
- const expressionS *tok;
- int ntok;
- const PTR vopname;
+s_alpha_prologue (int ignore ATTRIBUTE_UNUSED)
{
- const char *opname = (const char *) vopname;
- struct alpha_insn insn;
- expressionS newtok[3];
- int r, tokidx = 0;
- long lituse = 0;
+ int arg;
- if (tokidx < ntok && tok[tokidx].X_op == O_register)
- r = regno (tok[tokidx++].X_add_number);
- else
- r = strcmp (opname, "jmp") == 0 ? AXP_REG_ZERO : AXP_REG_RA;
+ arg = get_absolute_expression ();
+ demand_empty_rest_of_line ();
+ alpha_prologue_label = symbol_new
+ (FAKE_LABEL_NAME, now_seg, (valueT) frag_now_fix (), frag_now);
+}
- set_tok_reg (newtok[0], r);
+static void
+s_alpha_pdesc (int ignore ATTRIBUTE_UNUSED)
+{
+ char *name;
+ char name_end;
+ register char *p;
+ expressionS exp;
+ symbolS *entry_sym;
+ fixS *fixp;
+ segment_info_type *seginfo = seg_info (alpha_link_section);
+ const char *entry_sym_name;
+ char *sym_name;
+ int len;
- if (tokidx < ntok &&
- (tok[tokidx].X_op == O_pregister || tok[tokidx].X_op == O_cpregister))
- r = regno (tok[tokidx++].X_add_number);
-#ifdef OBJ_EVAX
- /* keep register if jsr $n.<sym> */
-#else
- else
+ if (now_seg != alpha_link_section)
{
- int basereg = alpha_gp_register;
- lituse = load_expression (r = AXP_REG_PV, &tok[tokidx], &basereg, NULL);
+ as_bad (_(".pdesc directive not in link (.link) section"));
+ demand_empty_rest_of_line ();
+ return;
}
-#endif
-
- set_tok_cpreg (newtok[1], r);
-#ifdef OBJ_EVAX
- /* FIXME: Add hint relocs to BFD for evax. */
-#else
- if (tokidx < ntok)
- newtok[2] = tok[tokidx];
- else
-#endif
- set_tok_const (newtok[2], 0);
+ expression (&exp);
+ if (exp.X_op != O_symbol)
+ {
+ as_warn (_(".pdesc directive has no entry symbol"));
+ demand_empty_rest_of_line ();
+ return;
+ }
+
+ entry_sym = make_expr_symbol (&exp);
+ entry_sym_name = symbol_get_bfdsym (entry_sym)->name;
+
+ len = strlen (entry_sym_name);
+ sym_name = (char *) xmalloc (len - 4 + 1);
+ strncpy (sym_name, entry_sym_name, len - 4);
+ sym_name [len - 4] = 0;
+
+ alpha_evax_proc = (struct alpha_evax_procs *)
+ hash_find (alpha_evax_proc_hash, sym_name);
+
+ if (!alpha_evax_proc || !S_IS_DEFINED (alpha_evax_proc->symbol))
+ {
+ as_fatal (_(".pdesc has no matching .ent"));
+ demand_empty_rest_of_line ();
+ return;
+ }
- assemble_tokens_to_insn (opname, newtok, 3, &insn);
+ *symbol_get_obj (alpha_evax_proc->symbol) =
+ (valueT) seginfo->literal_pool_size;
- if (lituse)
+ alpha_evax_proc->symbol->sy_obj = (valueT)seginfo->literal_pool_size;
+
+ /* Save bfd symbol of proc entry in function symbol. */
+ ((struct evax_private_udata_struct *)
+ symbol_get_bfdsym (alpha_evax_proc->symbol)->udata.p)->enbsym
+ = symbol_get_bfdsym (entry_sym);
+
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer++ != ',')
{
- assert (insn.nfixups < MAX_INSN_FIXUPS);
- insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_JSR;
- insn.fixups[insn.nfixups].exp.X_op = O_absent;
- insn.nfixups++;
- insn.sequence = lituse;
+ as_warn (_("No comma after .pdesc <entryname>"));
+ demand_empty_rest_of_line ();
+ return;
}
- emit_insn (&insn);
-}
+ SKIP_WHITESPACE ();
+ name = input_line_pointer;
+ name_end = get_symbol_end ();
-/* The ret and jcr instructions differ from their instruction
- counterparts in that everything can be defaulted. */
+ if (strncmp (name, "stack", 5) == 0)
+ alpha_evax_proc->pdsckind = PDSC_S_K_KIND_FP_STACK;
-static void
-emit_retjcr (tok, ntok, vopname)
- const expressionS *tok;
- int ntok;
- const PTR vopname;
-{
- const char *opname = (const char *) vopname;
- expressionS newtok[3];
- int r, tokidx = 0;
+ else if (strncmp (name, "reg", 3) == 0)
+ alpha_evax_proc->pdsckind = PDSC_S_K_KIND_FP_REGISTER;
+
+ else if (strncmp (name, "null", 4) == 0)
+ alpha_evax_proc->pdsckind = PDSC_S_K_KIND_NULL;
- if (tokidx < ntok && tok[tokidx].X_op == O_register)
- r = regno (tok[tokidx++].X_add_number);
else
- r = AXP_REG_ZERO;
+ {
+ as_fatal (_("unknown procedure kind"));
+ demand_empty_rest_of_line ();
+ return;
+ }
- set_tok_reg (newtok[0], r);
+ *input_line_pointer = name_end;
+ demand_empty_rest_of_line ();
- if (tokidx < ntok &&
- (tok[tokidx].X_op == O_pregister || tok[tokidx].X_op == O_cpregister))
- r = regno (tok[tokidx++].X_add_number);
- else
- r = AXP_REG_RA;
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
- set_tok_cpreg (newtok[1], r);
+ frag_align (3, 0, 0);
+ p = frag_more (16);
+ fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0);
+ fixp->fx_done = 1;
+ seginfo->literal_pool_size += 16;
- if (tokidx < ntok)
- newtok[2] = tok[tokidx];
- else
- set_tok_const (newtok[2], strcmp (opname, "ret") == 0);
+ *p = alpha_evax_proc->pdsckind
+ | ((alpha_evax_proc->framereg == 29) ? PDSC_S_M_BASE_REG_IS_FP : 0)
+ | ((alpha_evax_proc->handler) ? PDSC_S_M_HANDLER_VALID : 0)
+ | ((alpha_evax_proc->handler_data) ? PDSC_S_M_HANDLER_DATA_VALID : 0);
+ *(p + 1) = PDSC_S_M_NATIVE | PDSC_S_M_NO_JACKET;
- assemble_tokens (opname, newtok, 3, 0);
-}
-\f
-/* Assembler directives */
+ switch (alpha_evax_proc->pdsckind)
+ {
+ case PDSC_S_K_KIND_NULL:
+ *(p + 2) = 0;
+ *(p + 3) = 0;
+ break;
+ case PDSC_S_K_KIND_FP_REGISTER:
+ *(p + 2) = alpha_evax_proc->fp_save;
+ *(p + 3) = alpha_evax_proc->ra_save;
+ break;
+ case PDSC_S_K_KIND_FP_STACK:
+ md_number_to_chars (p + 2, (valueT) alpha_evax_proc->rsa_offset, 2);
+ break;
+ default: /* impossible */
+ break;
+ }
+
+ *(p + 4) = 0;
+ *(p + 5) = alpha_evax_proc->type & 0x0f;
+
+ /* Signature offset. */
+ md_number_to_chars (p + 6, (valueT) 0, 2);
+
+ fix_new_exp (frag_now, p - frag_now->fr_literal+8, 8, &exp, 0, BFD_RELOC_64);
-/* Handle the .text pseudo-op. This is like the usual one, but it
- clears alpha_insn_label and restores auto alignment. */
+ if (alpha_evax_proc->pdsckind == PDSC_S_K_KIND_NULL)
+ return;
-static void
-s_alpha_text (i)
- int i;
+ /* Add dummy fix to make add_to_link_pool work. */
+ p = frag_more (6);
+ fixp = fix_new (frag_now, p - frag_now->fr_literal, 6, 0, 0, 0, 0);
+ fixp->fx_done = 1;
+ seginfo->literal_pool_size += 6;
+
+ /* pdesc+16: Size. */
+ md_number_to_chars (p, (valueT) alpha_evax_proc->framesize, 4);
-{
- s_text (i);
- alpha_insn_label = NULL;
- alpha_auto_align_on = 1;
- alpha_current_align = 0;
-}
+ md_number_to_chars (p + 4, (valueT) 0, 2);
-/* Handle the .data pseudo-op. This is like the usual one, but it
- clears alpha_insn_label and restores auto alignment. */
+ /* Entry length. */
+ exp.X_op = O_subtract;
+ exp.X_add_symbol = alpha_prologue_label;
+ exp.X_op_symbol = entry_sym;
+ emit_expr (&exp, 2);
-static void
-s_alpha_data (i)
- int i;
-{
- s_data (i);
- alpha_insn_label = NULL;
- alpha_auto_align_on = 1;
- alpha_current_align = 0;
-}
+ if (alpha_evax_proc->pdsckind == PDSC_S_K_KIND_FP_REGISTER)
+ return;
-#if defined (OBJ_ECOFF) || defined (OBJ_EVAX)
+ /* Add dummy fix to make add_to_link_pool work. */
+ p = frag_more (8);
+ fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0);
+ fixp->fx_done = 1;
+ seginfo->literal_pool_size += 8;
-/* Handle the OSF/1 and openVMS .comm pseudo quirks.
- openVMS constructs a section for every common symbol. */
+ /* pdesc+24: register masks. */
-static void
-s_alpha_comm (ignore)
- int ignore;
-{
- register char *name;
- register char c;
- register char *p;
- offsetT temp;
- register symbolS *symbolP;
+ md_number_to_chars (p, alpha_evax_proc->imask, 4);
+ md_number_to_chars (p + 4, alpha_evax_proc->fmask, 4);
-#ifdef OBJ_EVAX
- segT current_section = now_seg;
- int current_subsec = now_subseg;
- segT new_seg;
-#endif
+ if (alpha_evax_proc->handler)
+ {
+ p = frag_more (8);
+ fixp = fix_new (frag_now, p - frag_now->fr_literal, 8,
+ alpha_evax_proc->handler, 0, 0, BFD_RELOC_64);
+ }
- name = input_line_pointer;
- c = get_symbol_end ();
+ if (alpha_evax_proc->handler_data)
+ {
+ /* Add dummy fix to make add_to_link_pool work. */
+ p = frag_more (8);
+ fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0);
+ fixp->fx_done = 1;
+ seginfo->literal_pool_size += 8;
+ md_number_to_chars (p, alpha_evax_proc->handler_data, 8);
+ }
+}
- /* just after name is now '\0' */
- p = input_line_pointer;
- *p = c;
+/* Support for crash debug on vms. */
- SKIP_WHITESPACE ();
+static void
+s_alpha_name (int ignore ATTRIBUTE_UNUSED)
+{
+ char *p;
+ expressionS exp;
+ segment_info_type *seginfo = seg_info (alpha_link_section);
- /* Alpha OSF/1 compiler doesn't provide the comma, gcc does. */
- if (*input_line_pointer == ',')
+ if (now_seg != alpha_link_section)
{
- input_line_pointer++;
- SKIP_WHITESPACE ();
+ as_bad (_(".name directive not in link (.link) section"));
+ demand_empty_rest_of_line ();
+ return;
}
- if ((temp = get_absolute_expression ()) < 0)
+
+ expression (&exp);
+ if (exp.X_op != O_symbol)
{
- as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
- ignore_rest_of_line ();
+ as_warn (_(".name directive has no symbol"));
+ demand_empty_rest_of_line ();
return;
}
- *p = 0;
- symbolP = symbol_find_or_make (name);
+ demand_empty_rest_of_line ();
-#ifdef OBJ_EVAX
- /* Make a section for the common symbol. */
- new_seg = subseg_new (xstrdup (name), 0);
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
#endif
- *p = c;
+ frag_align (3, 0, 0);
+ p = frag_more (8);
+ seginfo->literal_pool_size += 8;
-#ifdef OBJ_EVAX
- /* alignment might follow */
- if (*input_line_pointer == ',')
- {
- offsetT align;
+ fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &exp, 0, BFD_RELOC_64);
+}
- input_line_pointer++;
- align = get_absolute_expression ();
- bfd_set_section_alignment (stdoutput, new_seg, align);
- }
-#endif
+static void
+s_alpha_linkage (int ignore ATTRIBUTE_UNUSED)
+{
+ expressionS exp;
+ char *p;
+ fixS *fixp;
- if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
- {
- as_bad (_("Ignoring attempt to re-define symbol"));
- ignore_rest_of_line ();
- return;
- }
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
-#ifdef OBJ_EVAX
- if (bfd_section_size (stdoutput, new_seg) > 0)
- {
- if (bfd_section_size (stdoutput, new_seg) != temp)
- as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
- S_GET_NAME (symbolP),
- (long) bfd_section_size (stdoutput, new_seg),
- (long) temp);
- }
-#else
- if (S_GET_VALUE (symbolP))
+ expression (&exp);
+ if (exp.X_op != O_symbol)
{
- if (S_GET_VALUE (symbolP) != (valueT) temp)
- as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
- S_GET_NAME (symbolP),
- (long) S_GET_VALUE (symbolP),
- (long) temp);
+ as_fatal (_("No symbol after .linkage"));
}
-#endif
else
{
-#ifdef OBJ_EVAX
- subseg_set (new_seg, 0);
- p = frag_more (temp);
- new_seg->flags |= SEC_IS_COMMON;
- if (! S_IS_DEFINED (symbolP))
- S_SET_SEGMENT (symbolP, new_seg);
-#else
- S_SET_VALUE (symbolP, (valueT) temp);
-#endif
- S_SET_EXTERNAL (symbolP);
- }
+ struct alpha_linkage_fixups *linkage_fixup;
+
+ p = frag_more (LKP_S_K_SIZE);
+ memset (p, 0, LKP_S_K_SIZE);
+ fixp = fix_new_exp
+ (frag_now, p - frag_now->fr_literal, LKP_S_K_SIZE, &exp, 0,\
+ BFD_RELOC_ALPHA_LINKAGE);
-#ifdef OBJ_EVAX
- subseg_set (current_section, current_subsec);
-#endif
+ linkage_fixup = (struct alpha_linkage_fixups *)
+ xmalloc (sizeof (struct alpha_linkage_fixups));
+
+ linkage_fixup->fixp = fixp;
+ linkage_fixup->next = 0;
- know (symbol_get_frag (symbolP) == &zero_address_frag);
+ if (alpha_insn_label == 0)
+ alpha_insn_label = symbol_new
+ (FAKE_LABEL_NAME, now_seg, (valueT) frag_now_fix (), frag_now);
+ linkage_fixup->label = alpha_insn_label;
+ if (alpha_linkage_fixup_root == 0)
+ {
+ alpha_linkage_fixup_root = alpha_linkage_fixup_tail = linkage_fixup;
+ alpha_linkage_fixup_tail->next = 0;
+ }
+ else
+ {
+ alpha_linkage_fixup_tail->next = linkage_fixup;
+ alpha_linkage_fixup_tail = linkage_fixup;
+ alpha_linkage_fixup_tail->next = 0;
+ }
+ }
demand_empty_rest_of_line ();
}
-#endif /* ! OBJ_ELF */
+static void
+s_alpha_code_address (int ignore ATTRIBUTE_UNUSED)
+{
+ expressionS exp;
+ char *p;
-#ifdef OBJ_ECOFF
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
-/* Handle the .rdata pseudo-op. This is like the usual one, but it
- clears alpha_insn_label and restores auto alignment. */
+ expression (&exp);
+ if (exp.X_op != O_symbol)
+ as_fatal (_("No symbol after .code_address"));
+ else
+ {
+ p = frag_more (8);
+ memset (p, 0, 8);
+ fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &exp, 0,\
+ BFD_RELOC_ALPHA_CODEADDR);
+ }
+ demand_empty_rest_of_line ();
+}
static void
-s_alpha_rdata (ignore)
- int ignore;
+s_alpha_fp_save (int ignore ATTRIBUTE_UNUSED)
{
- int temp;
- temp = get_absolute_expression ();
- subseg_new (".rdata", 0);
+ alpha_evax_proc->fp_save = tc_get_register (1);
+
demand_empty_rest_of_line ();
- alpha_insn_label = NULL;
- alpha_auto_align_on = 1;
- alpha_current_align = 0;
}
-#endif
-
-#ifdef OBJ_ECOFF
+static void
+s_alpha_mask (int ignore ATTRIBUTE_UNUSED)
+{
+ long val;
-/* Handle the .sdata pseudo-op. This is like the usual one, but it
- clears alpha_insn_label and restores auto alignment. */
+ if (get_absolute_expression_and_terminator (&val) != ',')
+ {
+ as_warn (_("Bad .mask directive"));
+ --input_line_pointer;
+ }
+ else
+ {
+ alpha_evax_proc->imask = val;
+ (void) get_absolute_expression ();
+ }
+ demand_empty_rest_of_line ();
+}
static void
-s_alpha_sdata (ignore)
- int ignore;
+s_alpha_fmask (int ignore ATTRIBUTE_UNUSED)
{
- int temp;
+ long val;
- temp = get_absolute_expression ();
- subseg_new (".sdata", 0);
+ if (get_absolute_expression_and_terminator (&val) != ',')
+ {
+ as_warn (_("Bad .fmask directive"));
+ --input_line_pointer;
+ }
+ else
+ {
+ alpha_evax_proc->fmask = val;
+ (void) get_absolute_expression ();
+ }
demand_empty_rest_of_line ();
- alpha_insn_label = NULL;
- alpha_auto_align_on = 1;
- alpha_current_align = 0;
}
-#endif
-#ifdef OBJ_ELF
+static void
+s_alpha_end (int ignore ATTRIBUTE_UNUSED)
+{
+ char c;
-/* Handle the .section pseudo-op. This is like the usual one, but it
- clears alpha_insn_label and restores auto alignment. */
+ c = get_symbol_end ();
+ *input_line_pointer = c;
+ demand_empty_rest_of_line ();
+ alpha_evax_proc = 0;
+}
static void
-s_alpha_section (ignore)
- int ignore;
+s_alpha_file (int ignore ATTRIBUTE_UNUSED)
{
- obj_elf_section (ignore);
+ symbolS *s;
+ int length;
+ static char case_hack[32];
- alpha_insn_label = NULL;
- alpha_auto_align_on = 1;
- alpha_current_align = 0;
+ sprintf (case_hack, "<CASE:%01d%01d>",
+ alpha_flag_hash_long_names, alpha_flag_show_after_trunc);
+
+ s = symbol_find_or_make (case_hack);
+ symbol_get_bfdsym (s)->flags |= BSF_FILE;
+
+ get_absolute_expression ();
+ s = symbol_find_or_make (demand_copy_string (&length));
+ symbol_get_bfdsym (s)->flags |= BSF_FILE;
+ demand_empty_rest_of_line ();
}
+#endif /* OBJ_EVAX */
+
+/* Handle the .gprel32 pseudo op. */
static void
-s_alpha_ent (dummy)
- int dummy ATTRIBUTE_UNUSED;
+s_alpha_gprel32 (int ignore ATTRIBUTE_UNUSED)
{
- if (ECOFF_DEBUGGING)
- ecoff_directive_ent (0);
- else
- {
- char *name, name_end;
- name = input_line_pointer;
- name_end = get_symbol_end ();
+ expressionS e;
+ char *p;
- if (! is_name_beginner (*name))
- {
- as_warn (_(".ent directive has no name"));
- *input_line_pointer = name_end;
- }
- else
- {
- symbolS *sym;
+ SKIP_WHITESPACE ();
+ expression (&e);
- if (alpha_cur_ent_sym)
- as_warn (_("nested .ent directives"));
+#ifdef OBJ_ELF
+ switch (e.X_op)
+ {
+ case O_constant:
+ e.X_add_symbol = section_symbol (absolute_section);
+ e.X_op = O_symbol;
+ /* FALLTHRU */
+ case O_symbol:
+ break;
+ default:
+ abort ();
+ }
+#else
+#ifdef OBJ_ECOFF
+ switch (e.X_op)
+ {
+ case O_constant:
+ e.X_add_symbol = section_symbol (absolute_section);
+ /* fall through */
+ case O_symbol:
+ e.X_op = O_subtract;
+ e.X_op_symbol = alpha_gp_symbol;
+ break;
+ default:
+ abort ();
+ }
+#endif
+#endif
- sym = symbol_find_or_make (name);
- symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
- alpha_cur_ent_sym = sym;
+ if (alpha_auto_align_on && alpha_current_align < 2)
+ alpha_align (2, (char *) NULL, alpha_insn_label, 0);
+ if (alpha_current_align > 2)
+ alpha_current_align = 2;
+ alpha_insn_label = NULL;
- /* The .ent directive is sometimes followed by a number. Not sure
- what it really means, but ignore it. */
- *input_line_pointer = name_end;
- SKIP_WHITESPACE ();
- if (*input_line_pointer == ',')
- {
- input_line_pointer++;
- SKIP_WHITESPACE ();
- }
- if (isdigit (*input_line_pointer) || *input_line_pointer == '-')
- (void) get_absolute_expression ();
- }
- demand_empty_rest_of_line ();
- }
+ p = frag_more (4);
+ memset (p, 0, 4);
+ fix_new_exp (frag_now, p - frag_now->fr_literal, 4,
+ &e, 0, BFD_RELOC_GPREL32);
}
+/* Handle floating point allocation pseudo-ops. This is like the
+ generic vresion, but it makes sure the current label, if any, is
+ correctly aligned. */
+
static void
-s_alpha_end (dummy)
- int dummy ATTRIBUTE_UNUSED;
+s_alpha_float_cons (int type)
{
- if (ECOFF_DEBUGGING)
- ecoff_directive_end (0);
- else
- {
- char *name, name_end;
- name = input_line_pointer;
- name_end = get_symbol_end ();
+ int log_size;
- if (! is_name_beginner (*name))
- {
- as_warn (_(".end directive has no name"));
- *input_line_pointer = name_end;
- }
- else
- {
- symbolS *sym;
+ switch (type)
+ {
+ default:
+ case 'f':
+ case 'F':
+ log_size = 2;
+ break;
- sym = symbol_find (name);
- if (sym != alpha_cur_ent_sym)
- as_warn (_(".end directive names different symbol than .ent"));
+ case 'd':
+ case 'D':
+ case 'G':
+ log_size = 3;
+ break;
- /* Create an expression to calculate the size of the function. */
- if (sym)
- {
- symbol_get_obj (sym)->size =
- (expressionS *) xmalloc (sizeof (expressionS));
- symbol_get_obj (sym)->size->X_op = O_subtract;
- symbol_get_obj (sym)->size->X_add_symbol
- = symbol_new ("L0\001", now_seg, frag_now_fix (), frag_now);
- symbol_get_obj (sym)->size->X_op_symbol = sym;
- symbol_get_obj (sym)->size->X_add_number = 0;
- }
+ case 'x':
+ case 'X':
+ case 'p':
+ case 'P':
+ log_size = 4;
+ break;
+ }
- alpha_cur_ent_sym = NULL;
+ if (alpha_auto_align_on && alpha_current_align < log_size)
+ alpha_align (log_size, (char *) NULL, alpha_insn_label, 0);
+ if (alpha_current_align > log_size)
+ alpha_current_align = log_size;
+ alpha_insn_label = NULL;
- *input_line_pointer = name_end;
- }
- demand_empty_rest_of_line ();
- }
+ float_cons (type);
}
+/* Handle the .proc pseudo op. We don't really do much with it except
+ parse it. */
+
static void
-s_alpha_mask (fp)
- int fp;
+s_alpha_proc (int is_static ATTRIBUTE_UNUSED)
{
- if (ECOFF_DEBUGGING)
+ char *name;
+ char c;
+ char *p;
+ symbolS *symbolP;
+ int temp;
+
+ /* Takes ".proc name,nargs". */
+ SKIP_WHITESPACE ();
+ name = input_line_pointer;
+ c = get_symbol_end ();
+ p = input_line_pointer;
+ symbolP = symbol_find_or_make (name);
+ *p = c;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer != ',')
{
- if (fp)
- ecoff_directive_fmask (0);
- else
- ecoff_directive_mask (0);
+ *p = 0;
+ as_warn (_("Expected comma after name \"%s\""), name);
+ *p = c;
+ temp = 0;
+ ignore_rest_of_line ();
}
else
- discard_rest_of_line ();
+ {
+ input_line_pointer++;
+ temp = get_absolute_expression ();
+ }
+ /* *symbol_get_obj (symbolP) = (signed char) temp; */
+ as_warn (_("unhandled: .proc %s,%d"), name, temp);
+ demand_empty_rest_of_line ();
}
-static void
-s_alpha_frame (dummy)
- int dummy ATTRIBUTE_UNUSED;
-{
- if (ECOFF_DEBUGGING)
- ecoff_directive_frame (0);
- else
- discard_rest_of_line ();
-}
+/* Handle the .set pseudo op. This is used to turn on and off most of
+ the assembler features. */
static void
-s_alpha_prologue (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_alpha_set (int x ATTRIBUTE_UNUSED)
{
- symbolS *sym;
- int arg;
-
- arg = get_absolute_expression ();
- demand_empty_rest_of_line ();
+ char *name, ch, *s;
+ int yesno = 1;
- if (ECOFF_DEBUGGING)
- sym = ecoff_get_cur_proc_sym ();
- else
- sym = alpha_cur_ent_sym;
- know (sym != NULL);
+ SKIP_WHITESPACE ();
+ name = input_line_pointer;
+ ch = get_symbol_end ();
- switch (arg)
+ s = name;
+ if (s[0] == 'n' && s[1] == 'o')
{
- case 0: /* No PV required. */
- S_SET_OTHER (sym, STO_ALPHA_NOPV
- | (S_GET_OTHER (sym) & ~STO_ALPHA_STD_GPLOAD));
- break;
- case 1: /* Std GP load. */
- S_SET_OTHER (sym, STO_ALPHA_STD_GPLOAD
- | (S_GET_OTHER (sym) & ~STO_ALPHA_STD_GPLOAD));
- break;
- case 2: /* Non-std use of PV. */
- break;
-
- default:
- as_bad (_("Invalid argument %d to .prologue."), arg);
- break;
+ yesno = 0;
+ s += 2;
}
+ if (!strcmp ("reorder", s))
+ /* ignore */ ;
+ else if (!strcmp ("at", s))
+ alpha_noat_on = !yesno;
+ else if (!strcmp ("macro", s))
+ alpha_macros_on = yesno;
+ else if (!strcmp ("move", s))
+ /* ignore */ ;
+ else if (!strcmp ("volatile", s))
+ /* ignore */ ;
+ else
+ as_warn (_("Tried to .set unrecognized mode `%s'"), name);
+
+ *input_line_pointer = ch;
+ demand_empty_rest_of_line ();
}
-static char *first_file_directive;
+/* Handle the .base pseudo op. This changes the assembler's notion of
+ the $gp register. */
static void
-s_alpha_file (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_alpha_base (int ignore ATTRIBUTE_UNUSED)
{
- /* Save the first .file directive we see, so that we can change our
- minds about whether ecoff debugging should or shouldn't be enabled. */
- if (alpha_flag_mdebug < 0 && ! first_file_directive)
- {
- char *start = input_line_pointer;
- size_t len;
-
- discard_rest_of_line ();
+ SKIP_WHITESPACE ();
- len = input_line_pointer - start;
- first_file_directive = xmalloc (len + 1);
- memcpy (first_file_directive, start, len);
- first_file_directive[len] = '\0';
+ if (*input_line_pointer == '$')
+ {
+ /* $rNN form. */
+ input_line_pointer++;
+ if (*input_line_pointer == 'r')
+ input_line_pointer++;
+ }
- input_line_pointer = start;
+ alpha_gp_register = get_absolute_expression ();
+ if (alpha_gp_register < 0 || alpha_gp_register > 31)
+ {
+ alpha_gp_register = AXP_REG_GP;
+ as_warn (_("Bad base register, using $%d."), alpha_gp_register);
}
- if (ECOFF_DEBUGGING)
- ecoff_directive_file (0);
- else
- dwarf2_directive_file (0);
+ demand_empty_rest_of_line ();
}
-static void
-s_alpha_loc (ignore)
- int ignore ATTRIBUTE_UNUSED;
-{
- if (ECOFF_DEBUGGING)
- ecoff_directive_loc (0);
- else
- dwarf2_directive_loc (0);
-}
+/* Handle the .align pseudo-op. This aligns to a power of two. It
+ also adjusts any current instruction label. We treat this the same
+ way the MIPS port does: .align 0 turns off auto alignment. */
static void
-s_alpha_stab (n)
- int n;
+s_alpha_align (int ignore ATTRIBUTE_UNUSED)
{
- /* If we've been undecided about mdebug, make up our minds in favour. */
- if (alpha_flag_mdebug < 0)
- {
- segT sec = subseg_new (".mdebug", 0);
- bfd_set_section_flags (stdoutput, sec, SEC_HAS_CONTENTS | SEC_READONLY);
- bfd_set_section_alignment (stdoutput, sec, 3);
+ int align;
+ char fill, *pfill;
+ long max_alignment = 16;
- ecoff_read_begin_hook ();
+ align = get_absolute_expression ();
+ if (align > max_alignment)
+ {
+ align = max_alignment;
+ as_bad (_("Alignment too large: %d. assumed"), align);
+ }
+ else if (align < 0)
+ {
+ as_warn (_("Alignment negative: 0 assumed"));
+ align = 0;
+ }
- if (first_file_directive)
- {
- char *save_ilp = input_line_pointer;
- input_line_pointer = first_file_directive;
- ecoff_directive_file (0);
- input_line_pointer = save_ilp;
- free (first_file_directive);
- }
+ if (*input_line_pointer == ',')
+ {
+ input_line_pointer++;
+ fill = get_absolute_expression ();
+ pfill = &fill;
+ }
+ else
+ pfill = NULL;
- alpha_flag_mdebug = 1;
+ if (align != 0)
+ {
+ alpha_auto_align_on = 1;
+ alpha_align (align, pfill, alpha_insn_label, 1);
}
- s_stab (n);
+ else
+ {
+ alpha_auto_align_on = 0;
+ }
+
+ demand_empty_rest_of_line ();
}
+/* Hook the normal string processor to reset known alignment. */
+
static void
-s_alpha_coff_wrapper (which)
- int which;
+s_alpha_stringer (int terminate)
{
- static void (* const fns[]) PARAMS ((int)) = {
- ecoff_directive_begin,
- ecoff_directive_bend,
- ecoff_directive_def,
- ecoff_directive_dim,
- ecoff_directive_endef,
- ecoff_directive_scl,
- ecoff_directive_tag,
- ecoff_directive_val,
- };
+ alpha_current_align = 0;
+ alpha_insn_label = NULL;
+ stringer (8 + terminate);
+}
- assert (which >= 0 && which < (int) (sizeof (fns)/sizeof (*fns)));
+/* Hook the normal space processing to reset known alignment. */
- if (ECOFF_DEBUGGING)
- (*fns[which]) (0);
- else
- {
- as_bad (_("ECOFF debugging is disabled."));
- ignore_rest_of_line ();
- }
+static void
+s_alpha_space (int ignore)
+{
+ alpha_current_align = 0;
+ alpha_insn_label = NULL;
+ s_space (ignore);
}
-#endif /* OBJ_ELF */
-
-#ifdef OBJ_EVAX
-/* Handle the section specific pseudo-op. */
+/* Hook into cons for auto-alignment. */
-static void
-s_alpha_section (secid)
- int secid;
+void
+alpha_cons_align (int size)
{
- int temp;
-#define EVAX_SECTION_COUNT 5
- static char *section_name[EVAX_SECTION_COUNT + 1] =
- { "NULL", ".rdata", ".comm", ".link", ".ctors", ".dtors" };
+ int log_size;
- if ((secid <= 0) || (secid > EVAX_SECTION_COUNT))
- {
- as_fatal (_("Unknown section directive"));
- demand_empty_rest_of_line ();
- return;
- }
- temp = get_absolute_expression ();
- subseg_new (section_name[secid], 0);
- demand_empty_rest_of_line ();
+ log_size = 0;
+ while ((size >>= 1) != 0)
+ ++log_size;
+
+ if (alpha_auto_align_on && alpha_current_align < log_size)
+ alpha_align (log_size, (char *) NULL, alpha_insn_label, 0);
+ if (alpha_current_align > log_size)
+ alpha_current_align = log_size;
alpha_insn_label = NULL;
- alpha_auto_align_on = 1;
- alpha_current_align = 0;
}
-/* Parse .ent directives. */
+/* Here come the .uword, .ulong, and .uquad explicitly unaligned
+ pseudos. We just turn off auto-alignment and call down to cons. */
static void
-s_alpha_ent (ignore)
- int ignore;
+s_alpha_ucons (int bytes)
{
- symbolS *symbol;
- expressionS symexpr;
+ int hold = alpha_auto_align_on;
+ alpha_auto_align_on = 0;
+ cons (bytes);
+ alpha_auto_align_on = hold;
+}
- alpha_evax_proc.pdsckind = 0;
- alpha_evax_proc.framereg = -1;
- alpha_evax_proc.framesize = 0;
- alpha_evax_proc.rsa_offset = 0;
- alpha_evax_proc.ra_save = AXP_REG_RA;
- alpha_evax_proc.fp_save = -1;
- alpha_evax_proc.imask = 0;
- alpha_evax_proc.fmask = 0;
- alpha_evax_proc.prologue = 0;
- alpha_evax_proc.type = 0;
+/* Switch the working cpu type. */
- expression (&symexpr);
+static void
+s_alpha_arch (int ignored ATTRIBUTE_UNUSED)
+{
+ char *name, ch;
+ const struct cpu_type *p;
- if (symexpr.X_op != O_symbol)
- {
- as_fatal (_(".ent directive has no symbol"));
- demand_empty_rest_of_line ();
- return;
- }
+ SKIP_WHITESPACE ();
+ name = input_line_pointer;
+ ch = get_symbol_end ();
- symbol = make_expr_symbol (&symexpr);
- symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION;
- alpha_evax_proc.symbol = symbol;
+ for (p = cpu_types; p->name; ++p)
+ if (strcmp (name, p->name) == 0)
+ {
+ alpha_target_name = p->name, alpha_target = p->flags;
+ goto found;
+ }
+ as_warn (_("Unknown CPU identifier `%s'"), name);
+found:
+ *input_line_pointer = ch;
demand_empty_rest_of_line ();
- return;
}
-
-/* Parse .frame <framreg>,<framesize>,RA,<rsa_offset> directives. */
+\f
+#ifdef DEBUG1
+/* print token expression with alpha specific extension. */
static void
-s_alpha_frame (ignore)
- int ignore;
+alpha_print_token (FILE *f, const expressionS *exp)
{
- long val;
-
- alpha_evax_proc.framereg = tc_get_register (1);
-
- SKIP_WHITESPACE ();
- if (*input_line_pointer++ != ','
- || get_absolute_expression_and_terminator (&val) != ',')
+ switch (exp->X_op)
{
- as_warn (_("Bad .frame directive 1./2. param"));
- --input_line_pointer;
- demand_empty_rest_of_line ();
- return;
+ case O_cpregister:
+ putc (',', f);
+ /* FALLTHRU */
+ case O_pregister:
+ putc ('(', f);
+ {
+ expressionS nexp = *exp;
+ nexp.X_op = O_register;
+ print_expr_1 (f, &nexp);
+ }
+ putc (')', f);
+ break;
+ default:
+ print_expr_1 (f, exp);
+ break;
}
+}
+#endif
+\f
+/* The target specific pseudo-ops which we support. */
+
+const pseudo_typeS md_pseudo_table[] =
+{
+#ifdef OBJ_ECOFF
+ {"comm", s_alpha_comm, 0}, /* OSF1 compiler does this. */
+ {"rdata", s_alpha_rdata, 0},
+#endif
+ {"text", s_alpha_text, 0},
+ {"data", s_alpha_data, 0},
+#ifdef OBJ_ECOFF
+ {"sdata", s_alpha_sdata, 0},
+#endif
+#ifdef OBJ_ELF
+ {"section", s_alpha_section, 0},
+ {"section.s", s_alpha_section, 0},
+ {"sect", s_alpha_section, 0},
+ {"sect.s", s_alpha_section, 0},
+#endif
+#ifdef OBJ_EVAX
+ {"section", s_alpha_section, 0},
+ {"literals", s_alpha_literals, 0},
+ {"pdesc", s_alpha_pdesc, 0},
+ {"name", s_alpha_name, 0},
+ {"linkage", s_alpha_linkage, 0},
+ {"code_address", s_alpha_code_address, 0},
+ {"ent", s_alpha_ent, 0},
+ {"frame", s_alpha_frame, 0},
+ {"fp_save", s_alpha_fp_save, 0},
+ {"mask", s_alpha_mask, 0},
+ {"fmask", s_alpha_fmask, 0},
+ {"end", s_alpha_end, 0},
+ {"file", s_alpha_file, 0},
+ {"rdata", s_alpha_section, 1},
+ {"comm", s_alpha_comm, 0},
+ {"link", s_alpha_section, 3},
+ {"ctors", s_alpha_section, 4},
+ {"dtors", s_alpha_section, 5},
+ {"handler", s_alpha_handler, 0},
+ {"handler_data", s_alpha_handler, 1},
+#endif
+#ifdef OBJ_ELF
+ /* Frame related pseudos. */
+ {"ent", s_alpha_ent, 0},
+ {"end", s_alpha_end, 0},
+ {"mask", s_alpha_mask, 0},
+ {"fmask", s_alpha_mask, 1},
+ {"frame", s_alpha_frame, 0},
+ {"prologue", s_alpha_prologue, 0},
+ {"file", s_alpha_file, 5},
+ {"loc", s_alpha_loc, 9},
+ {"stabs", s_alpha_stab, 's'},
+ {"stabn", s_alpha_stab, 'n'},
+ {"usepv", s_alpha_usepv, 0},
+ /* COFF debugging related pseudos. */
+ {"begin", s_alpha_coff_wrapper, 0},
+ {"bend", s_alpha_coff_wrapper, 1},
+ {"def", s_alpha_coff_wrapper, 2},
+ {"dim", s_alpha_coff_wrapper, 3},
+ {"endef", s_alpha_coff_wrapper, 4},
+ {"scl", s_alpha_coff_wrapper, 5},
+ {"tag", s_alpha_coff_wrapper, 6},
+ {"val", s_alpha_coff_wrapper, 7},
+#else
+#ifdef OBJ_EVAX
+ {"prologue", s_alpha_prologue, 0},
+#else
+ {"prologue", s_ignore, 0},
+#endif
+#endif
+ {"gprel32", s_alpha_gprel32, 0},
+ {"t_floating", s_alpha_float_cons, 'd'},
+ {"s_floating", s_alpha_float_cons, 'f'},
+ {"f_floating", s_alpha_float_cons, 'F'},
+ {"g_floating", s_alpha_float_cons, 'G'},
+ {"d_floating", s_alpha_float_cons, 'D'},
- alpha_evax_proc.framesize = val;
+ {"proc", s_alpha_proc, 0},
+ {"aproc", s_alpha_proc, 1},
+ {"set", s_alpha_set, 0},
+ {"reguse", s_ignore, 0},
+ {"livereg", s_ignore, 0},
+ {"base", s_alpha_base, 0}, /*??*/
+ {"option", s_ignore, 0},
+ {"aent", s_ignore, 0},
+ {"ugen", s_ignore, 0},
+ {"eflag", s_ignore, 0},
- (void) tc_get_register (1);
- SKIP_WHITESPACE ();
- if (*input_line_pointer++ != ',')
- {
- as_warn (_("Bad .frame directive 3./4. param"));
- --input_line_pointer;
- demand_empty_rest_of_line ();
- return;
- }
- alpha_evax_proc.rsa_offset = get_absolute_expression ();
+ {"align", s_alpha_align, 0},
+ {"double", s_alpha_float_cons, 'd'},
+ {"float", s_alpha_float_cons, 'f'},
+ {"single", s_alpha_float_cons, 'f'},
+ {"ascii", s_alpha_stringer, 0},
+ {"asciz", s_alpha_stringer, 1},
+ {"string", s_alpha_stringer, 1},
+ {"space", s_alpha_space, 0},
+ {"skip", s_alpha_space, 0},
+ {"zero", s_alpha_space, 0},
+
+/* Unaligned data pseudos. */
+ {"uword", s_alpha_ucons, 2},
+ {"ulong", s_alpha_ucons, 4},
+ {"uquad", s_alpha_ucons, 8},
+
+#ifdef OBJ_ELF
+/* Dwarf wants these versions of unaligned. */
+ {"2byte", s_alpha_ucons, 2},
+ {"4byte", s_alpha_ucons, 4},
+ {"8byte", s_alpha_ucons, 8},
+#endif
+
+/* We don't do any optimizing, so we can safely ignore these. */
+ {"noalias", s_ignore, 0},
+ {"alias", s_ignore, 0},
+
+ {"arch", s_alpha_arch, 0},
+
+ {NULL, 0, 0},
+};
+\f
+#ifdef OBJ_ECOFF
- return;
+/* @@@ GP selection voodoo. All of this seems overly complicated and
+ unnecessary; which is the primary reason it's for ECOFF only. */
+
+static inline void
+maybe_set_gp (asection *sec)
+{
+ bfd_vma vma;
+
+ if (!sec)
+ return;
+ vma = bfd_get_section_vma (foo, sec);
+ if (vma && vma < alpha_gp_value)
+ alpha_gp_value = vma;
}
static void
-s_alpha_pdesc (ignore)
- int ignore;
+select_gp_value (void)
{
- char *name;
- char name_end;
- long val;
- register char *p;
- expressionS exp;
- symbolS *entry_sym;
- fixS *fixp;
- segment_info_type *seginfo = seg_info (alpha_link_section);
+ gas_assert (alpha_gp_value == 0);
- if (now_seg != alpha_link_section)
- {
- as_bad (_(".pdesc directive not in link (.link) section"));
- demand_empty_rest_of_line ();
- return;
- }
+ /* Get minus-one in whatever width... */
+ alpha_gp_value = 0;
+ alpha_gp_value--;
- if ((alpha_evax_proc.symbol == 0)
- || (!S_IS_DEFINED (alpha_evax_proc.symbol)))
- {
- as_fatal (_(".pdesc has no matching .ent"));
- demand_empty_rest_of_line ();
- return;
- }
+ /* Select the smallest VMA of these existing sections. */
+ maybe_set_gp (alpha_lita_section);
- *symbol_get_obj (alpha_evax_proc.symbol) =
- (valueT) seginfo->literal_pool_size;
+/* @@ Will a simple 0x8000 work here? If not, why not? */
+#define GP_ADJUSTMENT (0x8000 - 0x10)
- expression (&exp);
- if (exp.X_op != O_symbol)
- {
- as_warn (_(".pdesc directive has no entry symbol"));
- demand_empty_rest_of_line ();
- return;
- }
+ alpha_gp_value += GP_ADJUSTMENT;
- entry_sym = make_expr_symbol (&exp);
- /* Save bfd symbol of proc desc in function symbol. */
- symbol_get_bfdsym (alpha_evax_proc.symbol)->udata.p
- = symbol_get_bfdsym (entry_sym);
+ S_SET_VALUE (alpha_gp_symbol, alpha_gp_value);
- SKIP_WHITESPACE ();
- if (*input_line_pointer++ != ',')
- {
- as_warn (_("No comma after .pdesc <entryname>"));
- demand_empty_rest_of_line ();
- return;
- }
+#ifdef DEBUG1
+ printf (_("Chose GP value of %lx\n"), alpha_gp_value);
+#endif
+}
+#endif /* OBJ_ECOFF */
- SKIP_WHITESPACE ();
- name = input_line_pointer;
- name_end = get_symbol_end ();
+#ifdef OBJ_ELF
+/* Map 's' to SHF_ALPHA_GPREL. */
- if (strncmp (name, "stack", 5) == 0)
- {
- alpha_evax_proc.pdsckind = PDSC_S_K_KIND_FP_STACK;
- }
- else if (strncmp (name, "reg", 3) == 0)
- {
- alpha_evax_proc.pdsckind = PDSC_S_K_KIND_FP_REGISTER;
- }
- else if (strncmp (name, "null", 4) == 0)
- {
- alpha_evax_proc.pdsckind = PDSC_S_K_KIND_NULL;
- }
- else
- {
- as_fatal (_("unknown procedure kind"));
- demand_empty_rest_of_line ();
- return;
- }
+bfd_vma
+alpha_elf_section_letter (int letter, char **ptr_msg)
+{
+ if (letter == 's')
+ return SHF_ALPHA_GPREL;
- *input_line_pointer = name_end;
- demand_empty_rest_of_line ();
+ *ptr_msg = _("Bad .section directive: want a,s,w,x,M,S,G,T in string");
+ return -1;
+}
-#ifdef md_flush_pending_output
- md_flush_pending_output ();
-#endif
+/* Map SHF_ALPHA_GPREL to SEC_SMALL_DATA. */
- frag_align (3, 0, 0);
- p = frag_more (16);
- fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0);
- fixp->fx_done = 1;
- seginfo->literal_pool_size += 16;
+flagword
+alpha_elf_section_flags (flagword flags, bfd_vma attr, int type ATTRIBUTE_UNUSED)
+{
+ if (attr & SHF_ALPHA_GPREL)
+ flags |= SEC_SMALL_DATA;
+ return flags;
+}
+#endif /* OBJ_ELF */
- *p = alpha_evax_proc.pdsckind
- | ((alpha_evax_proc.framereg == 29) ? PDSC_S_M_BASE_REG_IS_FP : 0);
- *(p + 1) = PDSC_S_M_NATIVE | PDSC_S_M_NO_JACKET;
+/* This is called from HANDLE_ALIGN in write.c. Fill in the contents
+ of an rs_align_code fragment. */
+
+void
+alpha_handle_align (fragS *fragp)
+{
+ static char const unop[4] = { 0x00, 0x00, 0xfe, 0x2f };
+ static char const nopunop[8] =
+ {
+ 0x1f, 0x04, 0xff, 0x47,
+ 0x00, 0x00, 0xfe, 0x2f
+ };
- switch (alpha_evax_proc.pdsckind)
+ int bytes, fix;
+ char *p;
+
+ if (fragp->fr_type != rs_align_code)
+ return;
+
+ bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix;
+ p = fragp->fr_literal + fragp->fr_fix;
+ fix = 0;
+
+ if (bytes & 3)
{
- case PDSC_S_K_KIND_NULL:
- *(p + 2) = 0;
- *(p + 3) = 0;
- break;
- case PDSC_S_K_KIND_FP_REGISTER:
- *(p + 2) = alpha_evax_proc.fp_save;
- *(p + 3) = alpha_evax_proc.ra_save;
- break;
- case PDSC_S_K_KIND_FP_STACK:
- md_number_to_chars (p + 2, (valueT) alpha_evax_proc.rsa_offset, 2);
- break;
- default: /* impossible */
- break;
+ fix = bytes & 3;
+ memset (p, 0, fix);
+ p += fix;
+ bytes -= fix;
}
- *(p + 4) = 0;
- *(p + 5) = alpha_evax_proc.type & 0x0f;
+ if (bytes & 4)
+ {
+ memcpy (p, unop, 4);
+ p += 4;
+ bytes -= 4;
+ fix += 4;
+ }
- /* Signature offset. */
- md_number_to_chars (p + 6, (valueT) 0, 2);
+ memcpy (p, nopunop, 8);
- fix_new_exp (frag_now, p - frag_now->fr_literal+8, 8, &exp, 0, BFD_RELOC_64);
+ fragp->fr_fix += fix;
+ fragp->fr_var = 8;
+}
+\f
+/* Public interface functions. */
- if (alpha_evax_proc.pdsckind == PDSC_S_K_KIND_NULL)
- return;
+/* This function is called once, at assembler startup time. It sets
+ up all the tables, etc. that the MD part of the assembler will
+ need, that can be determined before arguments are parsed. */
- /* Add dummy fix to make add_to_link_pool work. */
- p = frag_more (8);
- fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0);
- fixp->fx_done = 1;
- seginfo->literal_pool_size += 8;
+void
+md_begin (void)
+{
+ unsigned int i;
- /* pdesc+16: Size. */
- md_number_to_chars (p, (valueT) alpha_evax_proc.framesize, 4);
+ /* Verify that X_op field is wide enough. */
+ {
+ expressionS e;
- md_number_to_chars (p + 4, (valueT) 0, 2);
+ e.X_op = O_max;
+ gas_assert (e.X_op == O_max);
+ }
- /* Entry length. */
- md_number_to_chars (p + 6, alpha_evax_proc.prologue, 2);
+ /* Create the opcode hash table. */
+ alpha_opcode_hash = hash_new ();
- if (alpha_evax_proc.pdsckind == PDSC_S_K_KIND_FP_REGISTER)
- return;
+ for (i = 0; i < alpha_num_opcodes;)
+ {
+ const char *name, *retval, *slash;
- /* Add dummy fix to make add_to_link_pool work. */
- p = frag_more (8);
- fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0);
- fixp->fx_done = 1;
- seginfo->literal_pool_size += 8;
+ name = alpha_opcodes[i].name;
+ retval = hash_insert (alpha_opcode_hash, name, (void *) &alpha_opcodes[i]);
+ if (retval)
+ as_fatal (_("internal error: can't hash opcode `%s': %s"),
+ name, retval);
- /* pdesc+24: register masks. */
+ /* Some opcodes include modifiers of various sorts with a "/mod"
+ syntax, like the architecture manual suggests. However, for
+ use with gcc at least, we also need access to those same opcodes
+ without the "/". */
- md_number_to_chars (p, alpha_evax_proc.imask, 4);
- md_number_to_chars (p + 4, alpha_evax_proc.fmask, 4);
+ if ((slash = strchr (name, '/')) != NULL)
+ {
+ char *p = (char *) xmalloc (strlen (name));
- return;
-}
+ memcpy (p, name, slash - name);
+ strcpy (p + (slash - name), slash + 1);
-/* Support for crash debug on vms. */
+ (void) hash_insert (alpha_opcode_hash, p, (void *) &alpha_opcodes[i]);
+ /* Ignore failures -- the opcode table does duplicate some
+ variants in different forms, like "hw_stq" and "hw_st/q". */
+ }
-static void
-s_alpha_name (ignore)
- int ignore;
-{
- register char *p;
- expressionS exp;
- segment_info_type *seginfo = seg_info (alpha_link_section);
+ while (++i < alpha_num_opcodes
+ && (alpha_opcodes[i].name == name
+ || !strcmp (alpha_opcodes[i].name, name)))
+ continue;
+ }
- if (now_seg != alpha_link_section)
+ /* Create the macro hash table. */
+ alpha_macro_hash = hash_new ();
+
+ for (i = 0; i < alpha_num_macros;)
{
- as_bad (_(".name directive not in link (.link) section"));
- demand_empty_rest_of_line ();
- return;
+ const char *name, *retval;
+
+ name = alpha_macros[i].name;
+ retval = hash_insert (alpha_macro_hash, name, (void *) &alpha_macros[i]);
+ if (retval)
+ as_fatal (_("internal error: can't hash macro `%s': %s"),
+ name, retval);
+
+ while (++i < alpha_num_macros
+ && (alpha_macros[i].name == name
+ || !strcmp (alpha_macros[i].name, name)))
+ continue;
}
- expression (&exp);
- if (exp.X_op != O_symbol)
+ /* Construct symbols for each of the registers. */
+ for (i = 0; i < 32; ++i)
{
- as_warn (_(".name directive has no symbol"));
- demand_empty_rest_of_line ();
- return;
+ char name[4];
+
+ sprintf (name, "$%d", i);
+ alpha_register_table[i] = symbol_create (name, reg_section, i,
+ &zero_address_frag);
}
- demand_empty_rest_of_line ();
+ for (; i < 64; ++i)
+ {
+ char name[5];
-#ifdef md_flush_pending_output
- md_flush_pending_output ();
-#endif
+ sprintf (name, "$f%d", i - 32);
+ alpha_register_table[i] = symbol_create (name, reg_section, i,
+ &zero_address_frag);
+ }
- frag_align (3, 0, 0);
- p = frag_more (8);
- seginfo->literal_pool_size += 8;
+ /* Create the special symbols and sections we'll be using. */
- fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &exp, 0, BFD_RELOC_64);
+ /* So .sbss will get used for tiny objects. */
+ bfd_set_gp_size (stdoutput, g_switch_value);
- return;
-}
+#ifdef OBJ_ECOFF
+ create_literal_section (".lita", &alpha_lita_section, &alpha_lita_symbol);
-static void
-s_alpha_linkage (ignore)
- int ignore;
-{
- expressionS exp;
- char *p;
+ /* For handling the GP, create a symbol that won't be output in the
+ symbol table. We'll edit it out of relocs later. */
+ alpha_gp_symbol = symbol_create ("<GP value>", alpha_lita_section, 0x8000,
+ &zero_address_frag);
+#endif
-#ifdef md_flush_pending_output
- md_flush_pending_output ();
+#ifdef OBJ_EVAX
+ create_literal_section (".link", &alpha_link_section, &alpha_link_symbol);
+ alpha_evax_proc_hash = hash_new ();
#endif
- expression (&exp);
- if (exp.X_op != O_symbol)
- {
- as_fatal (_("No symbol after .linkage"));
- }
- else
+#ifdef OBJ_ELF
+ if (ECOFF_DEBUGGING)
{
- p = frag_more (LKP_S_K_SIZE);
- memset (p, 0, LKP_S_K_SIZE);
- fix_new_exp (frag_now, p - frag_now->fr_literal, LKP_S_K_SIZE, &exp, 0,\
- BFD_RELOC_ALPHA_LINKAGE);
+ segT sec = subseg_new (".mdebug", (subsegT) 0);
+ bfd_set_section_flags (stdoutput, sec, SEC_HAS_CONTENTS | SEC_READONLY);
+ bfd_set_section_alignment (stdoutput, sec, 3);
}
- demand_empty_rest_of_line ();
+#endif
- return;
+ /* Create literal lookup hash table. */
+ alpha_literal_hash = hash_new ();
+
+ subseg_set (text_section, 0);
}
-static void
-s_alpha_code_address (ignore)
- int ignore;
+/* The public interface to the instruction assembler. */
+
+void
+md_assemble (char *str)
{
- expressionS exp;
- char *p;
+ /* Current maximum is 13. */
+ char opname[32];
+ expressionS tok[MAX_INSN_ARGS];
+ int ntok, trunclen;
+ size_t opnamelen;
-#ifdef md_flush_pending_output
- md_flush_pending_output ();
-#endif
+ /* Split off the opcode. */
+ opnamelen = strspn (str, "abcdefghijklmnopqrstuvwxyz_/46819");
+ trunclen = (opnamelen < sizeof (opname) - 1
+ ? opnamelen
+ : sizeof (opname) - 1);
+ memcpy (opname, str, trunclen);
+ opname[trunclen] = '\0';
- expression (&exp);
- if (exp.X_op != O_symbol)
- {
- as_fatal (_("No symbol after .code_address"));
- }
- else
+ /* Tokenize the rest of the line. */
+ if ((ntok = tokenize_arguments (str + opnamelen, tok, MAX_INSN_ARGS)) < 0)
{
- p = frag_more (8);
- memset (p, 0, 8);
- fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &exp, 0,\
- BFD_RELOC_ALPHA_CODEADDR);
+ if (ntok != TOKENIZE_ERROR_REPORT)
+ as_bad (_("syntax error"));
+
+ return;
}
- demand_empty_rest_of_line ();
- return;
+ /* Finish it off. */
+ assemble_tokens (opname, tok, ntok, alpha_macros_on);
}
-static void
-s_alpha_fp_save (ignore)
- int ignore;
-{
-
- alpha_evax_proc.fp_save = tc_get_register (1);
-
- demand_empty_rest_of_line ();
- return;
-}
+/* Round up a section's size to the appropriate boundary. */
-static void
-s_alpha_mask (ignore)
- int ignore;
+valueT
+md_section_align (segT seg, valueT size)
{
- long val;
-
- if (get_absolute_expression_and_terminator (&val) != ',')
- {
- as_warn (_("Bad .mask directive"));
- --input_line_pointer;
- }
- else
- {
- alpha_evax_proc.imask = val;
- (void) get_absolute_expression ();
- }
- demand_empty_rest_of_line ();
+ int align = bfd_get_section_alignment (stdoutput, seg);
+ valueT mask = ((valueT) 1 << align) - 1;
- return;
+ return (size + mask) & ~mask;
}
-static void
-s_alpha_fmask (ignore)
- int ignore;
+/* Turn a string in input_line_pointer into a floating point constant
+ of type TYPE, and store the appropriate bytes in *LITP. The number
+ of LITTLENUMS emitted is stored in *SIZEP. An error message is
+ returned, or NULL on OK. */
+
+char *
+md_atof (int type, char *litP, int *sizeP)
{
- long val;
+ extern char *vax_md_atof (int, char *, int *);
- if (get_absolute_expression_and_terminator (&val) != ',')
- {
- as_warn (_("Bad .fmask directive"));
- --input_line_pointer;
- }
- else
+ switch (type)
{
- alpha_evax_proc.fmask = val;
- (void) get_absolute_expression ();
- }
- demand_empty_rest_of_line ();
+ /* VAX floats. */
+ case 'G':
+ /* vax_md_atof() doesn't like "G" for some reason. */
+ type = 'g';
+ case 'F':
+ case 'D':
+ return vax_md_atof (type, litP, sizeP);
- return;
+ default:
+ return ieee_md_atof (type, litP, sizeP, FALSE);
+ }
}
-static void
-s_alpha_end (ignore)
- int ignore;
+/* Take care of the target-specific command-line options. */
+
+int
+md_parse_option (int c, char *arg)
{
- char c;
+ switch (c)
+ {
+ case 'F':
+ alpha_nofloats_on = 1;
+ break;
- c = get_symbol_end ();
- *input_line_pointer = c;
- demand_empty_rest_of_line ();
- alpha_evax_proc.symbol = 0;
+ case OPTION_32ADDR:
+ alpha_addr32_on = 1;
+ break;
- return;
-}
+ case 'g':
+ alpha_debug = 1;
+ break;
-static void
-s_alpha_file (ignore)
- int ignore;
-{
- symbolS *s;
- int length;
- static char case_hack[32];
+ case 'G':
+ g_switch_value = atoi (arg);
+ break;
- extern char *demand_copy_string PARAMS ((int *lenP));
+ case 'm':
+ {
+ const struct cpu_type *p;
- sprintf (case_hack, "<CASE:%01d%01d>",
- alpha_flag_hash_long_names, alpha_flag_show_after_trunc);
+ for (p = cpu_types; p->name; ++p)
+ if (strcmp (arg, p->name) == 0)
+ {
+ alpha_target_name = p->name, alpha_target = p->flags;
+ goto found;
+ }
+ as_warn (_("Unknown CPU identifier `%s'"), arg);
+ found:;
+ }
+ break;
- s = symbol_find_or_make (case_hack);
- symbol_get_bfdsym (s)->flags |= BSF_FILE;
+#ifdef OBJ_EVAX
+ case '+': /* For g++. Hash any name > 63 chars long. */
+ alpha_flag_hash_long_names = 1;
+ break;
- get_absolute_expression ();
- s = symbol_find_or_make (demand_copy_string (&length));
- symbol_get_bfdsym (s)->flags |= BSF_FILE;
- demand_empty_rest_of_line ();
+ case 'H': /* Show new symbol after hash truncation. */
+ alpha_flag_show_after_trunc = 1;
+ break;
- return;
-}
-#endif /* OBJ_EVAX */
+ case 'h': /* For gnu-c/vax compatibility. */
+ break;
-/* Handle the .gprel32 pseudo op. */
+ case OPTION_REPLACE:
+ alpha_flag_replace = 1;
+ break;
-static void
-s_alpha_gprel32 (ignore)
- int ignore ATTRIBUTE_UNUSED;
-{
- expressionS e;
- char *p;
+ case OPTION_NOREPLACE:
+ alpha_flag_replace = 0;
+ break;
+#endif
- SKIP_WHITESPACE ();
- expression (&e);
+ case OPTION_RELAX:
+ alpha_flag_relax = 1;
+ break;
#ifdef OBJ_ELF
- switch (e.X_op)
- {
- case O_constant:
- e.X_add_symbol = section_symbol (absolute_section);
- e.X_op = O_symbol;
- /* FALLTHRU */
- case O_symbol:
+ case OPTION_MDEBUG:
+ alpha_flag_mdebug = 1;
break;
- default:
- abort ();
- }
-#else
-#ifdef OBJ_ECOFF
- switch (e.X_op)
- {
- case O_constant:
- e.X_add_symbol = section_symbol (absolute_section);
- /* fall through */
- case O_symbol:
- e.X_op = O_subtract;
- e.X_op_symbol = alpha_gp_symbol;
+ case OPTION_NO_MDEBUG:
+ alpha_flag_mdebug = 0;
break;
+#endif
+
default:
- abort ();
+ return 0;
}
+
+ return 1;
+}
+
+/* Print a description of the command-line options that we accept. */
+
+void
+md_show_usage (FILE *stream)
+{
+ fputs (_("\
+Alpha options:\n\
+-32addr treat addresses as 32-bit values\n\
+-F lack floating point instructions support\n\
+-mev4 | -mev45 | -mev5 | -mev56 | -mpca56 | -mev6 | -mev67 | -mev68 | -mall\n\
+ specify variant of Alpha architecture\n\
+-m21064 | -m21066 | -m21164 | -m21164a | -m21164pc | -m21264 | -m21264a | -m21264b\n\
+ these variants include PALcode opcodes\n"),
+ stream);
+#ifdef OBJ_EVAX
+ fputs (_("\
+VMS options:\n\
+-+ encode (don't truncate) names longer than 64 characters\n\
+-H show new symbol after hash truncation\n\
+-replace/-noreplace enable or disable the optimization of procedure calls\n"),
+ stream);
#endif
-#endif
+}
- if (alpha_auto_align_on && alpha_current_align < 2)
- alpha_align (2, (char *) NULL, alpha_insn_label, 0);
- if (alpha_current_align > 2)
- alpha_current_align = 2;
- alpha_insn_label = NULL;
+/* Decide from what point a pc-relative relocation is relative to,
+ relative to the pc-relative fixup. Er, relatively speaking. */
- p = frag_more (4);
- memset (p, 0, 4);
- fix_new_exp (frag_now, p - frag_now->fr_literal, 4,
- &e, 0, BFD_RELOC_GPREL32);
+long
+md_pcrel_from (fixS *fixP)
+{
+ valueT addr = fixP->fx_where + fixP->fx_frag->fr_address;
+
+ switch (fixP->fx_r_type)
+ {
+ case BFD_RELOC_23_PCREL_S2:
+ case BFD_RELOC_ALPHA_HINT:
+ case BFD_RELOC_ALPHA_BRSGP:
+ return addr + 4;
+ default:
+ return addr;
+ }
}
-/* Handle floating point allocation pseudo-ops. This is like the
- generic vresion, but it makes sure the current label, if any, is
- correctly aligned. */
+/* Attempt to simplify or even eliminate a fixup. The return value is
+ ignored; perhaps it was once meaningful, but now it is historical.
+ To indicate that a fixup has been eliminated, set fixP->fx_done.
+
+ For ELF, here it is that we transform the GPDISP_HI16 reloc we used
+ internally into the GPDISP reloc used externally. We had to do
+ this so that we'd have the GPDISP_LO16 reloc as a tag to compute
+ the distance to the "lda" instruction for setting the addend to
+ GPDISP. */
-static void
-s_alpha_float_cons (type)
- int type;
+void
+md_apply_fix (fixS *fixP, valueT * valP, segT seg)
{
- int log_size;
+ char * const fixpos = fixP->fx_frag->fr_literal + fixP->fx_where;
+ valueT value = * valP;
+ unsigned image, size;
- switch (type)
+ switch (fixP->fx_r_type)
{
- default:
- case 'f':
- case 'F':
- log_size = 2;
- break;
+ /* The GPDISP relocations are processed internally with a symbol
+ referring to the current function's section; we need to drop
+ in a value which, when added to the address of the start of
+ the function, gives the desired GP. */
+ case BFD_RELOC_ALPHA_GPDISP_HI16:
+ {
+ fixS *next = fixP->fx_next;
- case 'd':
- case 'D':
- case 'G':
- log_size = 3;
- break;
+ /* With user-specified !gpdisp relocations, we can be missing
+ the matching LO16 reloc. We will have already issued an
+ error message. */
+ if (next)
+ fixP->fx_offset = (next->fx_frag->fr_address + next->fx_where
+ - fixP->fx_frag->fr_address - fixP->fx_where);
- case 'x':
- case 'X':
- case 'p':
- case 'P':
- log_size = 4;
- break;
- }
+ value = (value - sign_extend_16 (value)) >> 16;
+ }
+#ifdef OBJ_ELF
+ fixP->fx_r_type = BFD_RELOC_ALPHA_GPDISP;
+#endif
+ goto do_reloc_gp;
- if (alpha_auto_align_on && alpha_current_align < log_size)
- alpha_align (log_size, (char *) NULL, alpha_insn_label, 0);
- if (alpha_current_align > log_size)
- alpha_current_align = log_size;
- alpha_insn_label = NULL;
+ case BFD_RELOC_ALPHA_GPDISP_LO16:
+ value = sign_extend_16 (value);
+ fixP->fx_offset = 0;
+#ifdef OBJ_ELF
+ fixP->fx_done = 1;
+#endif
- float_cons (type);
-}
+ do_reloc_gp:
+ fixP->fx_addsy = section_symbol (seg);
+ md_number_to_chars (fixpos, value, 2);
+ break;
-/* Handle the .proc pseudo op. We don't really do much with it except
- parse it. */
+ case BFD_RELOC_16:
+ if (fixP->fx_pcrel)
+ fixP->fx_r_type = BFD_RELOC_16_PCREL;
+ size = 2;
+ goto do_reloc_xx;
-static void
-s_alpha_proc (is_static)
- int is_static ATTRIBUTE_UNUSED;
-{
- char *name;
- char c;
- char *p;
- symbolS *symbolP;
- int temp;
+ case BFD_RELOC_32:
+ if (fixP->fx_pcrel)
+ fixP->fx_r_type = BFD_RELOC_32_PCREL;
+ size = 4;
+ goto do_reloc_xx;
- /* Takes ".proc name,nargs" */
- SKIP_WHITESPACE ();
- name = input_line_pointer;
- c = get_symbol_end ();
- p = input_line_pointer;
- symbolP = symbol_find_or_make (name);
- *p = c;
- SKIP_WHITESPACE ();
- if (*input_line_pointer != ',')
- {
- *p = 0;
- as_warn (_("Expected comma after name \"%s\""), name);
- *p = c;
- temp = 0;
- ignore_rest_of_line ();
- }
- else
- {
- input_line_pointer++;
- temp = get_absolute_expression ();
- }
- /* *symbol_get_obj (symbolP) = (signed char) temp; */
- as_warn (_("unhandled: .proc %s,%d"), name, temp);
- demand_empty_rest_of_line ();
-}
+ case BFD_RELOC_64:
+ if (fixP->fx_pcrel)
+ fixP->fx_r_type = BFD_RELOC_64_PCREL;
+ size = 8;
-/* Handle the .set pseudo op. This is used to turn on and off most of
- the assembler features. */
+ do_reloc_xx:
+ if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0)
+ {
+ md_number_to_chars (fixpos, value, size);
+ goto done;
+ }
+ return;
-static void
-s_alpha_set (x)
- int x ATTRIBUTE_UNUSED;
-{
- char *name, ch, *s;
- int yesno = 1;
+#ifdef OBJ_ECOFF
+ case BFD_RELOC_GPREL32:
+ gas_assert (fixP->fx_subsy == alpha_gp_symbol);
+ fixP->fx_subsy = 0;
+ /* FIXME: inherited this obliviousness of `value' -- why? */
+ md_number_to_chars (fixpos, -alpha_gp_value, 4);
+ break;
+#else
+ case BFD_RELOC_GPREL32:
+#endif
+ case BFD_RELOC_GPREL16:
+ case BFD_RELOC_ALPHA_GPREL_HI16:
+ case BFD_RELOC_ALPHA_GPREL_LO16:
+ return;
- SKIP_WHITESPACE ();
- name = input_line_pointer;
- ch = get_symbol_end ();
+ case BFD_RELOC_23_PCREL_S2:
+ if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0)
+ {
+ image = bfd_getl32 (fixpos);
+ image = (image & ~0x1FFFFF) | ((value >> 2) & 0x1FFFFF);
+ goto write_done;
+ }
+ return;
- s = name;
- if (s[0] == 'n' && s[1] == 'o')
- {
- yesno = 0;
- s += 2;
- }
- if (!strcmp ("reorder", s))
- /* ignore */ ;
- else if (!strcmp ("at", s))
- alpha_noat_on = !yesno;
- else if (!strcmp ("macro", s))
- alpha_macros_on = yesno;
- else if (!strcmp ("move", s))
- /* ignore */ ;
- else if (!strcmp ("volatile", s))
- /* ignore */ ;
- else
- as_warn (_("Tried to .set unrecognized mode `%s'"), name);
+ case BFD_RELOC_ALPHA_HINT:
+ if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0)
+ {
+ image = bfd_getl32 (fixpos);
+ image = (image & ~0x3FFF) | ((value >> 2) & 0x3FFF);
+ goto write_done;
+ }
+ return;
- *input_line_pointer = ch;
- demand_empty_rest_of_line ();
-}
+#ifdef OBJ_ELF
+ case BFD_RELOC_ALPHA_BRSGP:
+ return;
-/* Handle the .base pseudo op. This changes the assembler's notion of
- the $gp register. */
+ case BFD_RELOC_ALPHA_TLSGD:
+ case BFD_RELOC_ALPHA_TLSLDM:
+ case BFD_RELOC_ALPHA_GOTDTPREL16:
+ case BFD_RELOC_ALPHA_DTPREL_HI16:
+ case BFD_RELOC_ALPHA_DTPREL_LO16:
+ case BFD_RELOC_ALPHA_DTPREL16:
+ case BFD_RELOC_ALPHA_GOTTPREL16:
+ case BFD_RELOC_ALPHA_TPREL_HI16:
+ case BFD_RELOC_ALPHA_TPREL_LO16:
+ case BFD_RELOC_ALPHA_TPREL16:
+ if (fixP->fx_addsy)
+ S_SET_THREAD_LOCAL (fixP->fx_addsy);
+ return;
+#endif
-static void
-s_alpha_base (ignore)
- int ignore ATTRIBUTE_UNUSED;
-{
-#if 0
- if (first_32bit_quadrant)
- {
- /* not fatal, but it might not work in the end */
- as_warn (_("File overrides no-base-register option."));
- first_32bit_quadrant = 0;
- }
+#ifdef OBJ_ECOFF
+ case BFD_RELOC_ALPHA_LITERAL:
+ md_number_to_chars (fixpos, value, 2);
+ return;
#endif
+ case BFD_RELOC_ALPHA_ELF_LITERAL:
+ case BFD_RELOC_ALPHA_LITUSE:
+ case BFD_RELOC_ALPHA_LINKAGE:
+ case BFD_RELOC_ALPHA_CODEADDR:
+ return;
- SKIP_WHITESPACE ();
- if (*input_line_pointer == '$')
- { /* $rNN form */
- input_line_pointer++;
- if (*input_line_pointer == 'r')
- input_line_pointer++;
- }
+#ifdef OBJ_EVAX
+ case BFD_RELOC_ALPHA_NOP:
+ value -= (8 + 4); /* PC-relative, base is jsr+4. */
+
+ /* From B.4.5.2 of the OpenVMS Linker Utility Manual:
+ "Finally, the ETIR$C_STC_BSR command passes the same address
+ as ETIR$C_STC_NOP (so that they will fail or succeed together),
+ and the same test is done again." */
+ if (S_GET_SEGMENT (fixP->fx_addsy) == undefined_section)
+ {
+ fixP->fx_addnumber = -value;
+ return;
+ }
- alpha_gp_register = get_absolute_expression ();
- if (alpha_gp_register < 0 || alpha_gp_register > 31)
- {
- alpha_gp_register = AXP_REG_GP;
- as_warn (_("Bad base register, using $%d."), alpha_gp_register);
- }
+ if ((abs (value) >> 2) & ~0xfffff)
+ goto done;
+ else
+ {
+ /* Change to a nop. */
+ image = 0x47FF041F;
+ goto write_done;
+ }
- demand_empty_rest_of_line ();
-}
+ case BFD_RELOC_ALPHA_LDA:
+ /* fixup_segment sets fixP->fx_addsy to NULL when it can pre-compute
+ the value for an O_subtract. */
+ if (fixP->fx_addsy
+ && S_GET_SEGMENT (fixP->fx_addsy) == undefined_section)
+ {
+ fixP->fx_addnumber = symbol_get_bfdsym (fixP->fx_subsy)->value;
+ return;
+ }
-/* Handle the .align pseudo-op. This aligns to a power of two. It
- also adjusts any current instruction label. We treat this the same
- way the MIPS port does: .align 0 turns off auto alignment. */
+ if ((abs (value)) & ~0x7fff)
+ goto done;
+ else
+ {
+ /* Change to an lda. */
+ image = 0x237B0000 | (value & 0xFFFF);
+ goto write_done;
+ }
-static void
-s_alpha_align (ignore)
- int ignore ATTRIBUTE_UNUSED;
-{
- int align;
- char fill, *pfill;
- long max_alignment = 15;
+ case BFD_RELOC_ALPHA_BSR:
+ case BFD_RELOC_ALPHA_BOH:
+ value -= 4; /* PC-relative, base is jsr+4. */
- align = get_absolute_expression ();
- if (align > max_alignment)
- {
- align = max_alignment;
- as_bad (_("Alignment too large: %d. assumed"), align);
- }
- else if (align < 0)
- {
- as_warn (_("Alignment negative: 0 assumed"));
- align = 0;
- }
+ /* See comment in the BFD_RELOC_ALPHA_NOP case above. */
+ if (S_GET_SEGMENT (fixP->fx_addsy) == undefined_section)
+ {
+ fixP->fx_addnumber = -value;
+ return;
+ }
- if (*input_line_pointer == ',')
- {
- input_line_pointer++;
- fill = get_absolute_expression ();
- pfill = &fill;
- }
- else
- pfill = NULL;
+ if ((abs (value) >> 2) & ~0xfffff)
+ {
+ /* Out of range. */
+ if (fixP->fx_r_type == BFD_RELOC_ALPHA_BOH)
+ {
+ /* Add a hint. */
+ image = bfd_getl32(fixpos);
+ image = (image & ~0x3FFF) | ((value >> 2) & 0x3FFF);
+ goto write_done;
+ }
+ goto done;
+ }
+ else
+ {
+ /* Change to a branch. */
+ image = 0xD3400000 | ((value >> 2) & 0x1FFFFF);
+ goto write_done;
+ }
+#endif
- if (align != 0)
- {
- alpha_auto_align_on = 1;
- alpha_align (align, pfill, alpha_insn_label, 1);
- }
- else
- {
- alpha_auto_align_on = 0;
- }
+ case BFD_RELOC_VTABLE_INHERIT:
+ case BFD_RELOC_VTABLE_ENTRY:
+ return;
- demand_empty_rest_of_line ();
-}
+ default:
+ {
+ const struct alpha_operand *operand;
-/* Hook the normal string processor to reset known alignment. */
+ if ((int) fixP->fx_r_type >= 0)
+ as_fatal (_("unhandled relocation type %s"),
+ bfd_get_reloc_code_name (fixP->fx_r_type));
-static void
-s_alpha_stringer (terminate)
- int terminate;
-{
- alpha_current_align = 0;
- alpha_insn_label = NULL;
- stringer (terminate);
-}
+ gas_assert (-(int) fixP->fx_r_type < (int) alpha_num_operands);
+ operand = &alpha_operands[-(int) fixP->fx_r_type];
-/* Hook the normal space processing to reset known alignment. */
+ /* The rest of these fixups only exist internally during symbol
+ resolution and have no representation in the object file.
+ Therefore they must be completely resolved as constants. */
-static void
-s_alpha_space (ignore)
- int ignore;
-{
- alpha_current_align = 0;
- alpha_insn_label = NULL;
- s_space (ignore);
-}
+ if (fixP->fx_addsy != 0
+ && S_GET_SEGMENT (fixP->fx_addsy) != absolute_section)
+ as_bad_where (fixP->fx_file, fixP->fx_line,
+ _("non-absolute expression in constant field"));
-/* Hook into cons for auto-alignment. */
+ image = bfd_getl32 (fixpos);
+ image = insert_operand (image, operand, (offsetT) value,
+ fixP->fx_file, fixP->fx_line);
+ }
+ goto write_done;
+ }
-void
-alpha_cons_align (size)
- int size;
-{
- int log_size;
+ if (fixP->fx_addsy != 0 || fixP->fx_pcrel != 0)
+ return;
+ else
+ {
+ as_warn_where (fixP->fx_file, fixP->fx_line,
+ _("type %d reloc done?\n"), (int) fixP->fx_r_type);
+ goto done;
+ }
- log_size = 0;
- while ((size >>= 1) != 0)
- ++log_size;
+write_done:
+ md_number_to_chars (fixpos, image, 4);
- if (alpha_auto_align_on && alpha_current_align < log_size)
- alpha_align (log_size, (char *) NULL, alpha_insn_label, 0);
- if (alpha_current_align > log_size)
- alpha_current_align = log_size;
- alpha_insn_label = NULL;
+done:
+ fixP->fx_done = 1;
}
-/* Here come the .uword, .ulong, and .uquad explicitly unaligned
- pseudos. We just turn off auto-alignment and call down to cons. */
+/* Look for a register name in the given symbol. */
-static void
-s_alpha_ucons (bytes)
- int bytes;
+symbolS *
+md_undefined_symbol (char *name)
{
- int hold = alpha_auto_align_on;
- alpha_auto_align_on = 0;
- cons (bytes);
- alpha_auto_align_on = hold;
-}
+ if (*name == '$')
+ {
+ int is_float = 0, num;
-/* Switch the working cpu type. */
+ switch (*++name)
+ {
+ case 'f':
+ if (name[1] == 'p' && name[2] == '\0')
+ return alpha_register_table[AXP_REG_FP];
+ is_float = 32;
+ /* Fall through. */
-static void
-s_alpha_arch (ignored)
- int ignored ATTRIBUTE_UNUSED;
-{
- char *name, ch;
- const struct cpu_type *p;
+ case 'r':
+ if (!ISDIGIT (*++name))
+ break;
+ /* Fall through. */
- SKIP_WHITESPACE ();
- name = input_line_pointer;
- ch = get_symbol_end ();
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ if (name[1] == '\0')
+ num = name[0] - '0';
+ else if (name[0] != '0' && ISDIGIT (name[1]) && name[2] == '\0')
+ {
+ num = (name[0] - '0') * 10 + name[1] - '0';
+ if (num >= 32)
+ break;
+ }
+ else
+ break;
- for (p = cpu_types; p->name; ++p)
- if (strcmp (name, p->name) == 0)
- {
- alpha_target_name = p->name, alpha_target = p->flags;
- goto found;
- }
- as_warn ("Unknown CPU identifier `%s'", name);
+ if (!alpha_noat_on && (num + is_float) == AXP_REG_AT)
+ as_warn (_("Used $at without \".set noat\""));
+ return alpha_register_table[num + is_float];
-found:
- *input_line_pointer = ch;
- demand_empty_rest_of_line ();
-}
-\f
-#ifdef DEBUG1
-/* print token expression with alpha specific extension. */
+ case 'a':
+ if (name[1] == 't' && name[2] == '\0')
+ {
+ if (!alpha_noat_on)
+ as_warn (_("Used $at without \".set noat\""));
+ return alpha_register_table[AXP_REG_AT];
+ }
+ break;
-static void
-alpha_print_token (f, exp)
- FILE *f;
- const expressionS *exp;
-{
- switch (exp->X_op)
- {
- case O_cpregister:
- putc (',', f);
- /* FALLTHRU */
- case O_pregister:
- putc ('(', f);
- {
- expressionS nexp = *exp;
- nexp.X_op = O_register;
- print_expr (f, &nexp);
- }
- putc (')', f);
- break;
- default:
- print_expr (f, exp);
- break;
+ case 'g':
+ if (name[1] == 'p' && name[2] == '\0')
+ return alpha_register_table[alpha_gp_register];
+ break;
+
+ case 's':
+ if (name[1] == 'p' && name[2] == '\0')
+ return alpha_register_table[AXP_REG_SP];
+ break;
+ }
}
- return;
+ return NULL;
}
-#endif
-\f
-/* The target specific pseudo-ops which we support. */
-const pseudo_typeS md_pseudo_table[] = {
-#ifdef OBJ_ECOFF
- {"comm", s_alpha_comm, 0}, /* osf1 compiler does this */
- {"rdata", s_alpha_rdata, 0},
-#endif
- {"text", s_alpha_text, 0},
- {"data", s_alpha_data, 0},
#ifdef OBJ_ECOFF
- {"sdata", s_alpha_sdata, 0},
-#endif
-#ifdef OBJ_ELF
- {"section", s_alpha_section, 0},
- {"section.s", s_alpha_section, 0},
- {"sect", s_alpha_section, 0},
- {"sect.s", s_alpha_section, 0},
-#endif
-#ifdef OBJ_EVAX
- { "pdesc", s_alpha_pdesc, 0},
- { "name", s_alpha_name, 0},
- { "linkage", s_alpha_linkage, 0},
- { "code_address", s_alpha_code_address, 0},
- { "ent", s_alpha_ent, 0},
- { "frame", s_alpha_frame, 0},
- { "fp_save", s_alpha_fp_save, 0},
- { "mask", s_alpha_mask, 0},
- { "fmask", s_alpha_fmask, 0},
- { "end", s_alpha_end, 0},
- { "file", s_alpha_file, 0},
- { "rdata", s_alpha_section, 1},
- { "comm", s_alpha_comm, 0},
- { "link", s_alpha_section, 3},
- { "ctors", s_alpha_section, 4},
- { "dtors", s_alpha_section, 5},
-#endif
-#ifdef OBJ_ELF
- /* Frame related pseudos. */
- {"ent", s_alpha_ent, 0},
- {"end", s_alpha_end, 0},
- {"mask", s_alpha_mask, 0},
- {"fmask", s_alpha_mask, 1},
- {"frame", s_alpha_frame, 0},
- {"prologue", s_alpha_prologue, 0},
- {"file", s_alpha_file, 5},
- {"loc", s_alpha_loc, 9},
- {"stabs", s_alpha_stab, 's'},
- {"stabn", s_alpha_stab, 'n'},
- /* COFF debugging related pseudos. */
- {"begin", s_alpha_coff_wrapper, 0},
- {"bend", s_alpha_coff_wrapper, 1},
- {"def", s_alpha_coff_wrapper, 2},
- {"dim", s_alpha_coff_wrapper, 3},
- {"endef", s_alpha_coff_wrapper, 4},
- {"scl", s_alpha_coff_wrapper, 5},
- {"tag", s_alpha_coff_wrapper, 6},
- {"val", s_alpha_coff_wrapper, 7},
-#else
- {"prologue", s_ignore, 0},
-#endif
- {"gprel32", s_alpha_gprel32, 0},
- {"t_floating", s_alpha_float_cons, 'd'},
- {"s_floating", s_alpha_float_cons, 'f'},
- {"f_floating", s_alpha_float_cons, 'F'},
- {"g_floating", s_alpha_float_cons, 'G'},
- {"d_floating", s_alpha_float_cons, 'D'},
-
- {"proc", s_alpha_proc, 0},
- {"aproc", s_alpha_proc, 1},
- {"set", s_alpha_set, 0},
- {"reguse", s_ignore, 0},
- {"livereg", s_ignore, 0},
- {"base", s_alpha_base, 0}, /*??*/
- {"option", s_ignore, 0},
- {"aent", s_ignore, 0},
- {"ugen", s_ignore, 0},
- {"eflag", s_ignore, 0},
-
- {"align", s_alpha_align, 0},
- {"double", s_alpha_float_cons, 'd'},
- {"float", s_alpha_float_cons, 'f'},
- {"single", s_alpha_float_cons, 'f'},
- {"ascii", s_alpha_stringer, 0},
- {"asciz", s_alpha_stringer, 1},
- {"string", s_alpha_stringer, 1},
- {"space", s_alpha_space, 0},
- {"skip", s_alpha_space, 0},
- {"zero", s_alpha_space, 0},
-
-/* Unaligned data pseudos. */
- {"uword", s_alpha_ucons, 2},
- {"ulong", s_alpha_ucons, 4},
- {"uquad", s_alpha_ucons, 8},
+/* @@@ Magic ECOFF bits. */
-#ifdef OBJ_ELF
-/* Dwarf wants these versions of unaligned. */
- {"2byte", s_alpha_ucons, 2},
- {"4byte", s_alpha_ucons, 4},
- {"8byte", s_alpha_ucons, 8},
+void
+alpha_frob_ecoff_data (void)
+{
+ select_gp_value ();
+ /* $zero and $f31 are read-only. */
+ alpha_gprmask &= ~1;
+ alpha_fprmask &= ~1;
+}
#endif
-/* We don't do any optimizing, so we can safely ignore these. */
- {"noalias", s_ignore, 0},
- {"alias", s_ignore, 0},
-
- {"arch", s_alpha_arch, 0},
-
- {NULL, 0, 0},
-};
-\f
-/* Build a BFD section with its flags set appropriately for the .lita,
- .lit8, or .lit4 sections. */
+/* Hook to remember a recently defined label so that the auto-align
+ code can adjust the symbol after we know what alignment will be
+ required. */
-static void
-create_literal_section (name, secp, symp)
- const char *name;
- segT *secp;
- symbolS **symp;
+void
+alpha_define_label (symbolS *sym)
{
- segT current_section = now_seg;
- int current_subsec = now_subseg;
- segT new_sec;
+ alpha_insn_label = sym;
+#ifdef OBJ_ELF
+ dwarf2_emit_label (sym);
+#endif
+}
- *secp = new_sec = subseg_new (name, 0);
- subseg_set (current_section, current_subsec);
- bfd_set_section_alignment (stdoutput, new_sec, 4);
- bfd_set_section_flags (stdoutput, new_sec,
- SEC_RELOC | SEC_ALLOC | SEC_LOAD | SEC_READONLY
- | SEC_DATA);
+/* Return true if we must always emit a reloc for a type and false if
+ there is some hope of resolving it at assembly time. */
- S_CLEAR_EXTERNAL (*symp = section_symbol (new_sec));
-}
+int
+alpha_force_relocation (fixS *f)
+{
+ if (alpha_flag_relax)
+ return 1;
-#ifdef OBJ_ECOFF
+ switch (f->fx_r_type)
+ {
+ case BFD_RELOC_ALPHA_GPDISP_HI16:
+ case BFD_RELOC_ALPHA_GPDISP_LO16:
+ case BFD_RELOC_ALPHA_GPDISP:
+ case BFD_RELOC_ALPHA_LITERAL:
+ case BFD_RELOC_ALPHA_ELF_LITERAL:
+ case BFD_RELOC_ALPHA_LITUSE:
+ case BFD_RELOC_GPREL16:
+ case BFD_RELOC_GPREL32:
+ case BFD_RELOC_ALPHA_GPREL_HI16:
+ case BFD_RELOC_ALPHA_GPREL_LO16:
+ case BFD_RELOC_ALPHA_LINKAGE:
+ case BFD_RELOC_ALPHA_CODEADDR:
+ case BFD_RELOC_ALPHA_BRSGP:
+ case BFD_RELOC_ALPHA_TLSGD:
+ case BFD_RELOC_ALPHA_TLSLDM:
+ case BFD_RELOC_ALPHA_GOTDTPREL16:
+ case BFD_RELOC_ALPHA_DTPREL_HI16:
+ case BFD_RELOC_ALPHA_DTPREL_LO16:
+ case BFD_RELOC_ALPHA_DTPREL16:
+ case BFD_RELOC_ALPHA_GOTTPREL16:
+ case BFD_RELOC_ALPHA_TPREL_HI16:
+ case BFD_RELOC_ALPHA_TPREL_LO16:
+ case BFD_RELOC_ALPHA_TPREL16:
+#ifdef OBJ_EVAX
+ case BFD_RELOC_ALPHA_NOP:
+ case BFD_RELOC_ALPHA_BSR:
+ case BFD_RELOC_ALPHA_LDA:
+ case BFD_RELOC_ALPHA_BOH:
+#endif
+ return 1;
-/* @@@ GP selection voodoo. All of this seems overly complicated and
- unnecessary; which is the primary reason it's for ECOFF only. */
+ default:
+ break;
+ }
-static inline void
-maybe_set_gp (sec)
- asection *sec;
-{
- bfd_vma vma;
- if (!sec)
- return;
- vma = bfd_get_section_vma (foo, sec);
- if (vma && vma < alpha_gp_value)
- alpha_gp_value = vma;
+ return generic_force_reloc (f);
}
-static void
-select_gp_value ()
+/* Return true if we can partially resolve a relocation now. */
+
+int
+alpha_fix_adjustable (fixS *f)
{
- assert (alpha_gp_value == 0);
+ /* Are there any relocation types for which we must generate a
+ reloc but we can adjust the values contained within it? */
+ switch (f->fx_r_type)
+ {
+ case BFD_RELOC_ALPHA_GPDISP_HI16:
+ case BFD_RELOC_ALPHA_GPDISP_LO16:
+ case BFD_RELOC_ALPHA_GPDISP:
+ return 0;
- /* Get minus-one in whatever width... */
- alpha_gp_value = 0;
- alpha_gp_value--;
+ case BFD_RELOC_ALPHA_LITERAL:
+ case BFD_RELOC_ALPHA_ELF_LITERAL:
+ case BFD_RELOC_ALPHA_LITUSE:
+ case BFD_RELOC_ALPHA_LINKAGE:
+ case BFD_RELOC_ALPHA_CODEADDR:
+ return 1;
- /* Select the smallest VMA of these existing sections. */
- maybe_set_gp (alpha_lita_section);
-#if 0
- /* These were disabled before -- should we use them? */
- maybe_set_gp (sdata);
- maybe_set_gp (lit8_sec);
- maybe_set_gp (lit4_sec);
-#endif
+ case BFD_RELOC_VTABLE_ENTRY:
+ case BFD_RELOC_VTABLE_INHERIT:
+ return 0;
-/* @@ Will a simple 0x8000 work here? If not, why not? */
-#define GP_ADJUSTMENT (0x8000 - 0x10)
+ case BFD_RELOC_GPREL16:
+ case BFD_RELOC_GPREL32:
+ case BFD_RELOC_ALPHA_GPREL_HI16:
+ case BFD_RELOC_ALPHA_GPREL_LO16:
+ case BFD_RELOC_23_PCREL_S2:
+ case BFD_RELOC_16:
+ case BFD_RELOC_32:
+ case BFD_RELOC_64:
+ case BFD_RELOC_ALPHA_HINT:
+ return 1;
- alpha_gp_value += GP_ADJUSTMENT;
+ case BFD_RELOC_ALPHA_TLSGD:
+ case BFD_RELOC_ALPHA_TLSLDM:
+ case BFD_RELOC_ALPHA_GOTDTPREL16:
+ case BFD_RELOC_ALPHA_DTPREL_HI16:
+ case BFD_RELOC_ALPHA_DTPREL_LO16:
+ case BFD_RELOC_ALPHA_DTPREL16:
+ case BFD_RELOC_ALPHA_GOTTPREL16:
+ case BFD_RELOC_ALPHA_TPREL_HI16:
+ case BFD_RELOC_ALPHA_TPREL_LO16:
+ case BFD_RELOC_ALPHA_TPREL16:
+ /* ??? No idea why we can't return a reference to .tbss+10, but
+ we're preventing this in the other assemblers. Follow for now. */
+ return 0;
- S_SET_VALUE (alpha_gp_symbol, alpha_gp_value);
+#ifdef OBJ_ELF
+ case BFD_RELOC_ALPHA_BRSGP:
+ /* If we have a BRSGP reloc to a local symbol, adjust it to BRADDR and
+ let it get resolved at assembly time. */
+ {
+ symbolS *sym = f->fx_addsy;
+ const char *name;
+ int offset = 0;
-#ifdef DEBUG1
- printf (_("Chose GP value of %lx\n"), alpha_gp_value);
+ if (generic_force_reloc (f))
+ return 0;
+
+ switch (S_GET_OTHER (sym) & STO_ALPHA_STD_GPLOAD)
+ {
+ case STO_ALPHA_NOPV:
+ break;
+ case STO_ALPHA_STD_GPLOAD:
+ offset = 8;
+ break;
+ default:
+ if (S_IS_LOCAL (sym))
+ name = "<local>";
+ else
+ name = S_GET_NAME (sym);
+ as_bad_where (f->fx_file, f->fx_line,
+ _("!samegp reloc against symbol without .prologue: %s"),
+ name);
+ break;
+ }
+ f->fx_r_type = BFD_RELOC_23_PCREL_S2;
+ f->fx_offset += offset;
+ return 1;
+ }
+#endif
+#ifdef OBJ_EVAX
+ case BFD_RELOC_ALPHA_NOP:
+ case BFD_RELOC_ALPHA_BSR:
+ case BFD_RELOC_ALPHA_LDA:
+ case BFD_RELOC_ALPHA_BOH:
+ return 1;
#endif
+
+ default:
+ return 1;
+ }
}
-#endif /* OBJ_ECOFF */
-/* Called internally to handle all alignment needs. This takes care
- of eliding calls to frag_align if'n the cached current alignment
- says we've already got it, as well as taking care of the auto-align
- feature wrt labels. */
+/* Generate the BFD reloc to be stuck in the object file from the
+ fixup used internally in the assembler. */
-static void
-alpha_align (n, pfill, label, force)
- int n;
- char *pfill;
- symbolS *label;
- int force ATTRIBUTE_UNUSED;
+arelent *
+tc_gen_reloc (asection *sec ATTRIBUTE_UNUSED,
+ fixS *fixp)
{
- if (alpha_current_align >= n)
- return;
+ arelent *reloc;
- if (pfill == NULL)
+ reloc = (arelent *) xmalloc (sizeof (* reloc));
+ reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
+ *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
+ reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
+
+ /* Make sure none of our internal relocations make it this far.
+ They'd better have been fully resolved by this point. */
+ gas_assert ((int) fixp->fx_r_type > 0);
+
+ reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
+ if (reloc->howto == NULL)
{
- if (subseg_text_p (now_seg))
- frag_align_code (n, 0);
- else
- frag_align (n, 0, 0);
+ as_bad_where (fixp->fx_file, fixp->fx_line,
+ _("cannot represent `%s' relocation in object file"),
+ bfd_get_reloc_code_name (fixp->fx_r_type));
+ return NULL;
}
- else
- frag_align (n, *pfill, 0);
- alpha_current_align = n;
+ if (!fixp->fx_pcrel != !reloc->howto->pc_relative)
+ as_fatal (_("internal error? cannot generate `%s' relocation"),
+ bfd_get_reloc_code_name (fixp->fx_r_type));
- if (label != NULL && S_GET_SEGMENT (label) == now_seg)
+ gas_assert (!fixp->fx_pcrel == !reloc->howto->pc_relative);
+
+#ifdef OBJ_ECOFF
+ if (fixp->fx_r_type == BFD_RELOC_ALPHA_LITERAL)
+ /* Fake out bfd_perform_relocation. sigh. */
+ reloc->addend = -alpha_gp_value;
+ else
+#endif
{
- symbol_set_frag (label, frag_now);
- S_SET_VALUE (label, (valueT) frag_now_fix ());
+ reloc->addend = fixp->fx_offset;
+#ifdef OBJ_ELF
+ /* Ohhh, this is ugly. The problem is that if this is a local global
+ symbol, the relocation will entirely be performed at link time, not
+ at assembly time. bfd_perform_reloc doesn't know about this sort
+ of thing, and as a result we need to fake it out here. */
+ if ((S_IS_EXTERNAL (fixp->fx_addsy) || S_IS_WEAK (fixp->fx_addsy)
+ || (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE)
+ || (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_THREAD_LOCAL))
+ && !S_IS_COMMON (fixp->fx_addsy))
+ reloc->addend -= symbol_get_bfdsym (fixp->fx_addsy)->value;
+#endif
}
- record_alignment (now_seg, n);
-
- /* ??? If alpha_flag_relax && force && elf, record the requested alignment
- in a reloc for the linker to see. */
-}
+#ifdef OBJ_EVAX
+ switch (fixp->fx_r_type)
+ {
+ struct evax_private_udata_struct *udata;
+ const char *pname;
+ int pname_len;
-/* This is called from HANDLE_ALIGN in write.c. Fill in the contents
- of an rs_align_code fragment. */
+ case BFD_RELOC_ALPHA_LINKAGE:
+ reloc->addend = fixp->fx_addnumber;
+ break;
-void
-alpha_handle_align (fragp)
- fragS *fragp;
-{
- static char const unop[4] = { 0x00, 0x00, 0xe0, 0x2f };
- static char const nopunop[8] = {
- 0x1f, 0x04, 0xff, 0x47,
- 0x00, 0x00, 0xe0, 0x2f
- };
+ case BFD_RELOC_ALPHA_NOP:
+ case BFD_RELOC_ALPHA_BSR:
+ case BFD_RELOC_ALPHA_LDA:
+ case BFD_RELOC_ALPHA_BOH:
+ pname = symbol_get_bfdsym (fixp->fx_addsy)->name;
- int bytes, fix;
- char *p;
+ /* We need the non-suffixed name of the procedure. Beware that
+ the main symbol might be equated so look it up and take its name. */
+ pname_len = strlen (pname);
+ if (pname_len > 4 && strcmp (pname + pname_len - 4, "..en") == 0)
+ {
+ symbolS *sym;
+ char *my_pname = xstrdup (pname);
+ my_pname [pname_len - 4] = 0;
+ sym = symbol_find (my_pname);
+ if (sym == NULL)
+ abort ();
+ while (symbol_equated_reloc_p (sym))
+ {
+ symbolS *n = symbol_get_value_expression (sym)->X_add_symbol;
- if (fragp->fr_type != rs_align_code)
- return;
+ /* We must avoid looping, as that can occur with a badly
+ written program. */
+ if (n == sym)
+ break;
+ sym = n;
+ }
+ pname = symbol_get_bfdsym (sym)->name;
+ }
- bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix;
- p = fragp->fr_literal + fragp->fr_fix;
- fix = 0;
+ udata = (struct evax_private_udata_struct *)
+ xmalloc (sizeof (struct evax_private_udata_struct));
+ udata->enbsym = symbol_get_bfdsym (fixp->fx_addsy);
+ udata->bsym = symbol_get_bfdsym (fixp->tc_fix_data.info->psym);
+ udata->origname = (char *)pname;
+ udata->lkindex = ((struct evax_private_udata_struct *)
+ symbol_get_bfdsym (fixp->tc_fix_data.info->sym)->udata.p)->lkindex;
+ reloc->sym_ptr_ptr = (void *)udata;
+ reloc->addend = fixp->fx_addnumber;
- if (bytes & 3)
- {
- fix = bytes & 3;
- memset (p, 0, fix);
- p += fix;
- bytes -= fix;
+ default:
+ break;
}
+#endif
- if (bytes & 4)
+ return reloc;
+}
+
+/* Parse a register name off of the input_line and return a register
+ number. Gets md_undefined_symbol above to do the register name
+ matching for us.
+
+ Only called as a part of processing the ECOFF .frame directive. */
+
+int
+tc_get_register (int frame ATTRIBUTE_UNUSED)
+{
+ int framereg = AXP_REG_SP;
+
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == '$')
{
- memcpy (p, unop, 4);
- p += 4;
- bytes -= 4;
- fix += 4;
+ char *s = input_line_pointer;
+ char c = get_symbol_end ();
+ symbolS *sym = md_undefined_symbol (s);
+
+ *strchr (s, '\0') = c;
+ if (sym && (framereg = S_GET_VALUE (sym)) <= 31)
+ goto found;
}
+ as_warn (_("frame reg expected, using $%d."), framereg);
- memcpy (p, nopunop, 8);
+found:
+ note_gpreg (framereg);
+ return framereg;
+}
- fragp->fr_fix += fix;
- fragp->fr_var = 8;
+/* This is called before the symbol table is processed. In order to
+ work with gcc when using mips-tfile, we must keep all local labels.
+ However, in other cases, we want to discard them. If we were
+ called with -g, but we didn't see any debugging information, it may
+ mean that gcc is smuggling debugging information through to
+ mips-tfile, in which case we must generate all local labels. */
+
+#ifdef OBJ_ECOFF
+
+void
+alpha_frob_file_before_adjust (void)
+{
+ if (alpha_debug != 0
+ && ! ecoff_debugging_seen)
+ flag_keep_locals = 1;
}
+#endif /* OBJ_ECOFF */
+
/* The Alpha has support for some VAX floating point types, as well as for
IEEE floating point. We consider IEEE to be the primary floating point
format, and sneak in the VAX floating point support here. */
-#define md_atof vax_md_atof
#include "config/atof-vax.c"
projects / external / binutils.git / blobdiff