/* read.c - read a source file -
- Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99,
- 2000 Free Software Foundation, Inc.
-
-This file is part of GAS, the GNU Assembler.
-
-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)
-any later version.
-
-GAS is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-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. */
-
-#if 0
-#define MASK_CHAR (0xFF) /* If your chars aren't 8 bits, you will
- change this a bit. But then, GNU isn't
- spozed to run on your machine anyway.
- (RMS is so shortsighted sometimes.)
- */
-#else
-#define MASK_CHAR ((int)(unsigned char)-1)
-#endif
+ Copyright (C) 1986-2014 Free Software Foundation, Inc.
+ This file is part of GAS, the GNU Assembler.
-/* This is the largest known floating point format (for now). It will
- grow when we do 4361 style flonums. */
+ 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 3, or (at your option)
+ any later version.
+
+ GAS is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+ 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, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
+/* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF).
+ But then, GNU isn't spozed to run on your machine anyway.
+ (RMS is so shortsighted sometimes.) */
+#define MASK_CHAR ((int)(unsigned char) -1)
+
+/* This is the largest known floating point format (for now). It will
+ grow when we do 4361 style flonums. */
#define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16)
-/* Routines that read assembler source text to build spagetti in memory.
+/* Routines that read assembler source text to build spaghetti in memory.
Another group of these functions is in the expr.c module. */
-/* for isdigit() */
-#include <ctype.h>
-
#include "as.h"
+#include "safe-ctype.h"
#include "subsegs.h"
#include "sb.h"
#include "macro.h"
#include "obstack.h"
-#include "listing.h"
#include "ecoff.h"
+#include "dw2gencfi.h"
+#include "wchar.h"
#ifndef TC_START_LABEL
-#define TC_START_LABEL(x,y) (x==':')
+#define TC_START_LABEL(x,y,z) (x == ':')
#endif
-/* The NOP_OPCODE is for the alignment fill value.
- * fill it a nop instruction so that the disassembler does not choke
- * on it
- */
-#ifndef NOP_OPCODE
-#define NOP_OPCODE 0x00
+/* Set by the object-format or the target. */
+#ifndef TC_IMPLICIT_LCOMM_ALIGNMENT
+#define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \
+ do \
+ { \
+ if ((SIZE) >= 8) \
+ (P2VAR) = 3; \
+ else if ((SIZE) >= 4) \
+ (P2VAR) = 2; \
+ else if ((SIZE) >= 2) \
+ (P2VAR) = 1; \
+ else \
+ (P2VAR) = 0; \
+ } \
+ while (0)
#endif
-char *input_line_pointer; /*->next char of source file to parse. */
+char *input_line_pointer; /*->next char of source file to parse. */
#if BITS_PER_CHAR != 8
/* The following table is indexed by[(char)] and will break if
#endif
#ifndef LEX_AT
-/* The m88k unfortunately uses @ as a label beginner. */
#define LEX_AT 0
#endif
#endif
#ifndef LEX_HASH
+/* The IA-64 assembler uses # as a suffix designating a symbol. We include
+ it in the symbol and strip it out in tc_canonicalize_symbol_name. */
#define LEX_HASH 0
#endif
#ifndef LEX_DOLLAR
-/* The a29k assembler does not permits labels to start with $. */
#define LEX_DOLLAR 3
#endif
#define LEX_TILDE 0
#endif
-/* used by is_... macros. our ctype[] */
-char lex_type[256] =
-{
+/* Used by is_... macros. our ctype[]. */
+char lex_type[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */
0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */
LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */
0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
};
-
-/*
- * In: a character.
- * Out: 1 if this character ends a line.
- */
-#define Z_ (0)
-char is_end_of_line[256] =
-{
+/* In: a character.
+ Out: 1 if this character ends a line.
+ 2 if this character is a line separator. */
+char is_end_of_line[256] = {
#ifdef CR_EOL
- 99, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, 99, Z_, Z_, 99, Z_, Z_, /* @abcdefghijklmno */
-#else
- 99, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, 99, Z_, Z_, Z_, Z_, Z_, /* @abcdefghijklmno */
-#endif
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
-#ifdef TC_HPPA
- Z_,99, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* _!"#$%&'()*+,-./ */
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* 0123456789:;<=>? */
+ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */
#else
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, 99, Z_, Z_, Z_, Z_, /* 0123456789:;<=>? */
+ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */
#endif
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
- Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */
};
-#undef Z_
-/* Functions private to this file. */
+#ifndef TC_CASE_SENSITIVE
+char original_case_string[128];
+#endif
+
+/* Functions private to this file. */
-static char *buffer; /* 1st char of each buffer of lines is here. */
-static char *buffer_limit; /*->1 + last char in buffer. */
+static char *buffer; /* 1st char of each buffer of lines is here. */
+static char *buffer_limit; /*->1 + last char in buffer. */
-/* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 in the
- tc-<CPU>.h file. See the "Porting GAS" section of the internals manual. */
+/* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1
+ in the tc-<CPU>.h file. See the "Porting GAS" section of the
+ internals manual. */
int target_big_endian = TARGET_BYTES_BIG_ENDIAN;
-static char *old_buffer; /* JF a hack */
-static char *old_input;
-static char *old_limit;
+/* Variables for handling include file directory table. */
+
+/* Table of pointers to directories to search for .include's. */
+char **include_dirs;
-/* Variables for handling include file directory table. */
+/* How many are in the table. */
+int include_dir_count;
-char **include_dirs; /* Table of pointers to directories to
- search for .include's */
-int include_dir_count; /* How many are in the table */
-int include_dir_maxlen = 1;/* Length of longest in table */
+/* Length of longest in table. */
+int include_dir_maxlen = 1;
#ifndef WORKING_DOT_WORD
struct broken_word *broken_words;
#endif
#endif
-static void cons_worker PARAMS ((int, int));
-static int scrub_from_string PARAMS ((char *, int));
-static void do_align PARAMS ((int, char *, int, int));
-static void s_align PARAMS ((int, int));
-static void s_lcomm_internal PARAMS ((int, int));
-static int hex_float PARAMS ((int, char *));
-static inline int sizeof_sleb128 PARAMS ((offsetT));
-static inline int sizeof_uleb128 PARAMS ((valueT));
-static inline int output_sleb128 PARAMS ((char *, offsetT));
-static inline int output_uleb128 PARAMS ((char *, valueT));
-static inline int output_big_sleb128 PARAMS ((char *, LITTLENUM_TYPE *, int));
-static inline int output_big_uleb128 PARAMS ((char *, LITTLENUM_TYPE *, int));
-static int output_big_leb128 PARAMS ((char *, LITTLENUM_TYPE *, int, int));
-static void do_org PARAMS ((segT, expressionS *, int));
-char *demand_copy_string PARAMS ((int *lenP));
-static segT get_segmented_expression PARAMS ((expressionS *expP));
-static segT get_known_segmented_expression PARAMS ((expressionS * expP));
-static void pobegin PARAMS ((void));
-static int get_line_sb PARAMS ((sb *));
-static void generate_file_debug PARAMS ((void));
-\f
+/* If the target defines the md_frag_max_var hook then we know
+ enough to implement the .bundle_align_mode features. */
+#ifdef md_frag_max_var
+# define HANDLE_BUNDLE
+#endif
+
+#ifdef HANDLE_BUNDLE
+/* .bundle_align_mode sets this. Normally it's zero. When nonzero,
+ it's the exponent of the bundle size, and aligned instruction bundle
+ mode is in effect. */
+static unsigned int bundle_align_p2;
+
+/* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets
+ bundle_lock_frag to frag_now and then starts a new frag with
+ frag_align_code. At the same time, bundle_lock_frain gets frchain_now,
+ so that .bundle_unlock can verify that we didn't change segments.
+ .bundle_unlock resets both to NULL. If we detect a bundling violation,
+ then we reset bundle_lock_frchain to NULL as an indicator that we've
+ already diagnosed the error with as_bad and don't need a cascade of
+ redundant errors, but bundle_lock_frag remains set to indicate that
+ we are expecting to see .bundle_unlock. */
+static fragS *bundle_lock_frag;
+static frchainS *bundle_lock_frchain;
+
+/* This is incremented by .bundle_lock and decremented by .bundle_unlock,
+ to allow nesting. */
+static unsigned int bundle_lock_depth;
+#endif
+static void do_s_func (int end_p, const char *default_prefix);
+static void do_align (int, char *, int, int);
+static void s_align (int, int);
+static void s_altmacro (int);
+static void s_bad_end (int);
+static void s_reloc (int);
+static int hex_float (int, char *);
+static segT get_known_segmented_expression (expressionS * expP);
+static void pobegin (void);
+static size_t get_non_macro_line_sb (sb *);
+static void generate_file_debug (void);
+static char *_find_end_of_line (char *, int, int, int);
+\f
void
-read_begin ()
+read_begin (void)
{
const char *p;
obstack_begin (¬es, chunksize);
obstack_begin (&cond_obstack, chunksize);
- /* Use machine dependent syntax */
- for (p = line_separator_chars; *p; p++)
- is_end_of_line[(unsigned char) *p] = 1;
- /* Use more. FIXME-SOMEDAY. */
+#ifndef tc_line_separator_chars
+#define tc_line_separator_chars line_separator_chars
+#endif
+ /* Use machine dependent syntax. */
+ for (p = tc_line_separator_chars; *p; p++)
+ is_end_of_line[(unsigned char) *p] = 2;
+ /* Use more. FIXME-SOMEDAY. */
if (flag_mri)
lex_type['?'] = 3;
}
\f
-/* set up pseudo-op tables */
+#ifndef TC_ADDRESS_BYTES
+#define TC_ADDRESS_BYTES address_bytes
+
+static inline int
+address_bytes (void)
+{
+ /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to
+ contain an address. */
+ int n = (stdoutput->arch_info->bits_per_address - 1) / 8;
+ n |= n >> 1;
+ n |= n >> 2;
+ n += 1;
+ return n;
+}
+#endif
+
+/* Set up pseudo-op tables. */
static struct hash_control *po_hash;
-static const pseudo_typeS potable[] =
-{
+static const pseudo_typeS potable[] = {
{"abort", s_abort, 0},
{"align", s_align_ptwo, 0},
- {"ascii", stringer, 0},
- {"asciz", stringer, 1},
+ {"altmacro", s_altmacro, 1},
+ {"ascii", stringer, 8+0},
+ {"asciz", stringer, 8+1},
{"balign", s_align_bytes, 0},
{"balignw", s_align_bytes, -2},
{"balignl", s_align_bytes, -4},
-/* block */
+/* block */
+#ifdef HANDLE_BUNDLE
+ {"bundle_align_mode", s_bundle_align_mode, 0},
+ {"bundle_lock", s_bundle_lock, 0},
+ {"bundle_unlock", s_bundle_unlock, 0},
+#endif
{"byte", cons, 1},
{"comm", s_comm, 0},
{"common", s_mri_common, 0},
{"common.s", s_mri_common, 1},
{"data", s_data, 0},
{"dc", cons, 2},
+#ifdef TC_ADDRESS_BYTES
+ {"dc.a", cons, 0},
+#endif
{"dc.b", cons, 1},
{"dc.d", float_cons, 'd'},
{"dc.l", cons, 4},
#ifdef S_SET_DESC
{"desc", s_desc, 0},
#endif
-/* dim */
+/* dim */
{"double", float_cons, 'd'},
-/* dsect */
- {"eject", listing_eject, 0}, /* Formfeed listing */
+/* dsect */
+ {"eject", listing_eject, 0}, /* Formfeed listing. */
{"else", s_else, 0},
{"elsec", s_else, 0},
{"elseif", s_elseif, (int) O_ne},
{"endc", s_endif, 0},
{"endfunc", s_func, 1},
{"endif", s_endif, 0},
-/* endef */
+ {"endm", s_bad_end, 0},
+ {"endr", s_bad_end, 1},
+/* endef */
{"equ", s_set, 0},
{"equiv", s_set, 1},
+ {"eqv", s_set, -1},
{"err", s_err, 0},
+ {"error", s_errwarn, 1},
{"exitm", s_mexit, 0},
-/* extend */
- {"extern", s_ignore, 0}, /* We treat all undef as ext */
+/* extend */
+ {"extern", s_ignore, 0}, /* We treat all undef as ext. */
{"appfile", s_app_file, 1},
- {"appline", s_app_line, 0},
+ {"appline", s_app_line, 1},
{"fail", s_fail, 0},
{"file", s_app_file, 0},
{"fill", s_fill, 0},
{"globl", s_globl, 0},
{"hword", cons, 2},
{"if", s_if, (int) O_ne},
+ {"ifb", s_ifb, 1},
{"ifc", s_ifc, 0},
{"ifdef", s_ifdef, 0},
{"ifeq", s_if, (int) O_eq},
{"ifgt", s_if, (int) O_gt},
{"ifle", s_if, (int) O_le},
{"iflt", s_if, (int) O_lt},
+ {"ifnb", s_ifb, 0},
{"ifnc", s_ifc, 1},
{"ifndef", s_ifdef, 1},
{"ifne", s_if, (int) O_ne},
{"ifnes", s_ifeqs, 1},
{"ifnotdef", s_ifdef, 1},
+ {"incbin", s_incbin, 0},
{"include", s_include, 0},
{"int", cons, 4},
{"irp", s_irp, 0},
{"irpc", s_irp, 1},
{"irepc", s_irp, 1},
{"lcomm", s_lcomm, 0},
- {"lflags", listing_flags, 0}, /* Listing flags */
+ {"lflags", s_ignore, 0}, /* Listing flags. */
+ {"linefile", s_app_line, 0},
{"linkonce", s_linkonce, 0},
- {"list", listing_list, 1}, /* Turn listing on */
+ {"list", listing_list, 1}, /* Turn listing on. */
{"llen", listing_psize, 1},
{"long", cons, 4},
{"lsym", s_lsym, 0},
{"mri", s_mri, 0},
{".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */
{"name", s_ignore, 0},
+ {"noaltmacro", s_altmacro, 0},
{"noformat", s_ignore, 0},
- {"nolist", listing_list, 0}, /* Turn listing off */
+ {"nolist", listing_list, 0}, /* Turn listing off. */
{"nopage", listing_nopage, 0},
{"octa", cons, 16},
{"offset", s_struct, 0},
{"page", listing_eject, 0},
{"plen", listing_psize, 0},
{"print", s_print, 0},
- {"psize", listing_psize, 0}, /* set paper size */
+ {"psize", listing_psize, 0}, /* Set paper size. */
{"purgem", s_purgem, 0},
{"quad", cons, 8},
+ {"reloc", s_reloc, 0},
{"rep", s_rept, 0},
{"rept", s_rept, 0},
{"rva", s_rva, 4},
- {"sbttl", listing_title, 1}, /* Subtitle of listing */
-/* scl */
-/* sect */
+ {"sbttl", listing_title, 1}, /* Subtitle of listing. */
+/* scl */
+/* sect */
{"set", s_set, 0},
{"short", cons, 2},
{"single", float_cons, 'f'},
-/* size */
+/* size */
{"space", s_space, 0},
{"skip", s_space, 0},
{"sleb128", s_leb128, 1},
{"stabd", s_stab, 'd'},
{"stabn", s_stab, 'n'},
{"stabs", s_stab, 's'},
- {"string", stringer, 1},
+ {"string", stringer, 8+1},
+ {"string8", stringer, 8+1},
+ {"string16", stringer, 16+1},
+ {"string32", stringer, 32+1},
+ {"string64", stringer, 64+1},
{"struct", s_struct, 0},
-/* tag */
+/* tag */
{"text", s_text, 0},
/* This is for gcc to use. It's only just been added (2/94), so gcc
this one. Match it either way... */
{"this_gcc_requires_the_gnu_assembler", s_ignore, 0},
- {"title", listing_title, 0}, /* Listing title */
+ {"title", listing_title, 0}, /* Listing title. */
{"ttl", listing_title, 0},
-/* type */
+/* type */
{"uleb128", s_leb128, 0},
-/* use */
-/* val */
+/* use */
+/* val */
{"xcom", s_comm, 0},
{"xdef", s_globl, 0},
{"xref", s_ignore, 0},
{"xstabs", s_xstab, 's'},
+ {"warning", s_errwarn, 0},
+ {"weakref", s_weakref, 0},
{"word", cons, 2},
{"zero", s_space, 0},
- {NULL, NULL, 0} /* end sentinel */
+ {NULL, NULL, 0} /* End sentinel. */
};
+static offsetT
+get_absolute_expr (expressionS *exp)
+{
+ expression_and_evaluate (exp);
+ if (exp->X_op != O_constant)
+ {
+ if (exp->X_op != O_absent)
+ as_bad (_("bad or irreducible absolute expression"));
+ exp->X_add_number = 0;
+ }
+ return exp->X_add_number;
+}
+
+offsetT
+get_absolute_expression (void)
+{
+ expressionS exp;
+
+ return get_absolute_expr (&exp);
+}
+
static int pop_override_ok = 0;
static const char *pop_table_name;
void
-pop_insert (table)
- const pseudo_typeS *table;
+pop_insert (const pseudo_typeS *table)
{
const char *errtxt;
const pseudo_typeS *pop;
#define obj_pop_insert() pop_insert(obj_pseudo_table)
#endif
-static void
-pobegin ()
+#ifndef cfi_pop_insert
+#define cfi_pop_insert() pop_insert(cfi_pseudo_table)
+#endif
+
+static void
+pobegin (void)
{
po_hash = hash_new ();
- /* Do the target-specific pseudo ops. */
+ /* Do the target-specific pseudo ops. */
pop_table_name = "md";
md_pop_insert ();
- /* Now object specific. Skip any that were in the target table. */
+ /* Now object specific. Skip any that were in the target table. */
pop_table_name = "obj";
pop_override_ok = 1;
obj_pop_insert ();
- /* Now portable ones. Skip any that we've seen already. */
+ /* Now portable ones. Skip any that we've seen already. */
pop_table_name = "standard";
pop_insert (potable);
+
+ /* Now CFI ones. */
+ pop_table_name = "cfi";
+ pop_override_ok = 1;
+ cfi_pop_insert ();
}
\f
#define HANDLE_CONDITIONAL_ASSEMBLY() \
if (ignore_input ()) \
{ \
- while (! is_end_of_line[(unsigned char) *input_line_pointer++]) \
- if (input_line_pointer == buffer_limit) \
- break; \
+ char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \
+ input_line_pointer = (input_line_pointer <= buffer_limit \
+ && eol >= buffer_limit) \
+ ? buffer_limit \
+ : eol + 1; \
continue; \
}
-
/* This function is used when scrubbing the characters between #APP
and #NO_APP. */
static char *scrub_string;
static char *scrub_string_end;
-static int
-scrub_from_string (buf, buflen)
- char *buf;
- int buflen;
+static size_t
+scrub_from_string (char *buf, size_t buflen)
{
- int copy;
+ size_t copy;
copy = scrub_string_end - scrub_string;
if (copy > buflen)
return copy;
}
-/* read_a_source_file()
- *
- * We read the file, putting things into a web that
- * represents what we have been reading.
- */
-void
-read_a_source_file (name)
- char *name;
+/* Helper function of read_a_source_file, which tries to expand a macro. */
+static int
+try_macro (char term, const char *line)
+{
+ sb out;
+ const char *err;
+ macro_entry *macro;
+
+ if (check_macro (line, &out, &err, ¯o))
+ {
+ if (err != NULL)
+ as_bad ("%s", err);
+ *input_line_pointer++ = term;
+ input_scrub_include_sb (&out,
+ input_line_pointer, 1);
+ sb_kill (&out);
+ buffer_limit =
+ input_scrub_next_buffer (&input_line_pointer);
+#ifdef md_macro_info
+ md_macro_info (macro);
+#endif
+ return 1;
+ }
+ return 0;
+}
+
+#ifdef HANDLE_BUNDLE
+/* Start a new instruction bundle. Returns the rs_align_code frag that
+ will be used to align the new bundle. */
+static fragS *
+start_bundle (void)
+{
+ fragS *frag = frag_now;
+
+ frag_align_code (0, 0);
+
+ while (frag->fr_type != rs_align_code)
+ frag = frag->fr_next;
+
+ gas_assert (frag != frag_now);
+
+ return frag;
+}
+
+/* Calculate the maximum size after relaxation of the region starting
+ at the given frag and extending through frag_now (which is unfinished). */
+static unsigned int
+pending_bundle_size (fragS *frag)
+{
+ unsigned int offset = frag->fr_fix;
+ unsigned int size = 0;
+
+ gas_assert (frag != frag_now);
+ gas_assert (frag->fr_type == rs_align_code);
+
+ while (frag != frag_now)
+ {
+ /* This should only happen in what will later become an error case. */
+ if (frag == NULL)
+ return 0;
+
+ size += frag->fr_fix;
+ if (frag->fr_type == rs_machine_dependent)
+ size += md_frag_max_var (frag);
+
+ frag = frag->fr_next;
+ }
+
+ gas_assert (frag == frag_now);
+ size += frag_now_fix ();
+ if (frag->fr_type == rs_machine_dependent)
+ size += md_frag_max_var (frag);
+
+ gas_assert (size >= offset);
+
+ return size - offset;
+}
+
+/* Finish off the frag created to ensure bundle alignment. */
+static void
+finish_bundle (fragS *frag, unsigned int size)
+{
+ gas_assert (bundle_align_p2 > 0);
+ gas_assert (frag->fr_type == rs_align_code);
+
+ if (size > 1)
+ {
+ /* If there is more than a single byte, then we need to set up the
+ alignment frag. Otherwise we leave it at its initial state from
+ calling frag_align_code (0, 0), so that it does nothing. */
+ frag->fr_offset = bundle_align_p2;
+ frag->fr_subtype = size - 1;
+ }
+
+ /* We do this every time rather than just in s_bundle_align_mode
+ so that we catch any affected section without needing hooks all
+ over for all paths that do section changes. It's cheap enough. */
+ record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER);
+}
+
+/* Assemble one instruction. This takes care of the bundle features
+ around calling md_assemble. */
+static void
+assemble_one (char *line)
+{
+ fragS *insn_start_frag = NULL;
+
+ if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now)
+ {
+ as_bad (_("cannot change section or subsection inside .bundle_lock"));
+ /* Clearing this serves as a marker that we have already complained. */
+ bundle_lock_frchain = NULL;
+ }
+
+ if (bundle_lock_frchain == NULL && bundle_align_p2 > 0)
+ insn_start_frag = start_bundle ();
+
+ md_assemble (line);
+
+ if (bundle_lock_frchain != NULL)
+ {
+ /* Make sure this hasn't pushed the locked sequence
+ past the bundle size. */
+ unsigned int bundle_size = pending_bundle_size (bundle_lock_frag);
+ if (bundle_size > (1U << bundle_align_p2))
+ as_bad (_("\
+.bundle_lock sequence at %u bytes but .bundle_align_mode limit is %u bytes"),
+ bundle_size, 1U << bundle_align_p2);
+ }
+ else if (bundle_align_p2 > 0)
+ {
+ unsigned int insn_size = pending_bundle_size (insn_start_frag);
+
+ if (insn_size > (1U << bundle_align_p2))
+ as_bad (_("\
+single instruction is %u bytes long but .bundle_align_mode limit is %u"),
+ (unsigned int) insn_size, 1U << bundle_align_p2);
+
+ finish_bundle (insn_start_frag, insn_size);
+ }
+}
+
+#else /* !HANDLE_BUNDLE */
+
+# define assemble_one(line) md_assemble(line)
+
+#endif /* HANDLE_BUNDLE */
+
+/* We read the file, putting things into a web that represents what we
+ have been reading. */
+void
+read_a_source_file (char *name)
{
- register char c;
- register char *s; /* string of symbol, '\0' appended */
- register int temp;
+ char c;
+ char *s; /* String of symbol, '\0' appended. */
+ int temp;
pseudo_typeS *pop;
+#ifdef WARN_COMMENTS
+ found_comment = 0;
+#endif
+
buffer = input_scrub_new_file (name);
listing_file (name);
generate_file_debug ();
while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0)
- { /* We have another line to parse. */
- know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */
- contin: /* JF this goto is my fault I admit it.
- Someone brave please re-write the whole
- input section here? Pleeze??? */
+ { /* We have another line to parse. */
+#ifndef NO_LISTING
+ /* In order to avoid listing macro expansion lines with labels
+ multiple times, keep track of which line was last issued. */
+ static char *last_eol;
+
+ last_eol = NULL;
+#endif
while (input_line_pointer < buffer_limit)
{
- /* We have more of this buffer to parse. */
-
- /*
- * We now have input_line_pointer->1st char of next line.
- * If input_line_pointer [-1] == '\n' then we just
- * scanned another line: so bump line counters.
- */
- if (is_end_of_line[(unsigned char) input_line_pointer[-1]])
+ bfd_boolean was_new_line;
+ /* We have more of this buffer to parse. */
+
+ /* We now have input_line_pointer->1st char of next line.
+ If input_line_pointer [-1] == '\n' then we just
+ scanned another line: so bump line counters. */
+ was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]];
+ if (was_new_line)
{
+ symbol_set_value_now (&dot_symbol);
#ifdef md_start_line_hook
md_start_line_hook ();
#endif
-
if (input_line_pointer[-1] == '\n')
bump_line_counters ();
+ }
- line_label = NULL;
+#ifndef NO_LISTING
+ /* If listing is on, and we are expanding a macro, then give
+ the listing code the contents of the expanded line. */
+ if (listing)
+ {
+ if ((listing & LISTING_MACEXP) && macro_nest > 0)
+ {
+ /* Find the end of the current expanded macro line. */
+ s = find_end_of_line (input_line_pointer, flag_m68k_mri);
- if (flag_m68k_mri
-#ifdef LABELS_WITHOUT_COLONS
- || 1
+ if (s != last_eol)
+ {
+ char *copy;
+ int len;
+
+ last_eol = s;
+ /* Copy it for safe keeping. Also give an indication of
+ how much macro nesting is involved at this point. */
+ len = s - input_line_pointer;
+ copy = (char *) xmalloc (len + macro_nest + 2);
+ memset (copy, '>', macro_nest);
+ copy[macro_nest] = ' ';
+ memcpy (copy + macro_nest + 1, input_line_pointer, len);
+ copy[macro_nest + 1 + len] = '\0';
+
+ /* Install the line with the listing facility. */
+ listing_newline (copy);
+ }
+ }
+ else
+ listing_newline (NULL);
+ }
#endif
- )
+ if (was_new_line)
+ {
+ line_label = NULL;
+
+ if (LABELS_WITHOUT_COLONS || flag_m68k_mri)
{
/* Text at the start of a line must be a label, we
run down and stick a colon in. */
if (is_name_beginner (*input_line_pointer))
{
char *line_start = input_line_pointer;
- char c;
int mri_line_macro;
- LISTING_NEWLINE ();
HANDLE_CONDITIONAL_ASSEMBLY ();
c = get_symbol_end ();
}
/* In MRI mode, we need to handle the MACRO
- pseudo-op specially: we don't want to put the
- symbol in the symbol table. */
- if (! mri_line_macro)
+ pseudo-op specially: we don't want to put the
+ symbol in the symbol table. */
+ if (!mri_line_macro
+#ifdef TC_START_LABEL_WITHOUT_COLON
+ && TC_START_LABEL_WITHOUT_COLON(c,
+ input_line_pointer)
+#endif
+ )
line_label = colon (line_start);
else
line_label = symbol_create (line_start,
}
}
- /*
- * We are at the begining of a line, or similar place.
- * We expect a well-formed assembler statement.
- * A "symbol-name:" is a statement.
- *
- * Depending on what compiler is used, the order of these tests
- * may vary to catch most common case 1st.
- * Each test is independent of all other tests at the (top) level.
- * PLEASE make a compiler that doesn't use this assembler.
- * It is crufty to waste a compiler's time encoding things for this
- * assembler, which then wastes more time decoding it.
- * (And communicating via (linear) files is silly!
- * If you must pass stuff, please pass a tree!)
- */
- if ((c = *input_line_pointer++) == '\t'
- || c == ' '
- || c == '\f'
- || c == 0)
- {
- c = *input_line_pointer++;
- }
- know (c != ' '); /* No further leading whitespace. */
-
-#ifndef NO_LISTING
- /* If listing is on, and we are expanding a macro, then give
- the listing code the contents of the expanded line. */
- if (listing)
- {
- if ((listing & LISTING_MACEXP) && macro_nest > 0)
- {
- char *copy;
- int len;
-
- /* Find the end of the current expanded macro line. */
- for (s = input_line_pointer-1; *s ; ++s)
- if (is_end_of_line[(unsigned char) *s])
- break;
+ /* We are at the beginning of a line, or similar place.
+ We expect a well-formed assembler statement.
+ A "symbol-name:" is a statement.
- /* Copy it for safe keeping. Also give an indication of
- how much macro nesting is involved at this point. */
- len = s - (input_line_pointer-1);
- copy = (char *) xmalloc (len + macro_nest + 2);
- memset (copy, '>', macro_nest);
- copy[macro_nest] = ' ';
- memcpy (copy + macro_nest + 1, input_line_pointer-1, len);
- copy[macro_nest+1+len] = '\0';
-
- /* Install the line with the listing facility. */
- listing_newline (copy);
- }
- else
- listing_newline (NULL);
- }
-#endif
+ Depending on what compiler is used, the order of these tests
+ may vary to catch most common case 1st.
+ Each test is independent of all other tests at the (top)
+ level. */
+ do
+ c = *input_line_pointer++;
+ while (c == '\t' || c == ' ' || c == '\f');
- /*
- * C is the 1st significant character.
- * Input_line_pointer points after that character.
- */
+ /* C is the 1st significant character.
+ Input_line_pointer points after that character. */
if (is_name_beginner (c))
{
- /* want user-defined label or pseudo/opcode */
+ /* Want user-defined label or pseudo/opcode. */
HANDLE_CONDITIONAL_ASSEMBLY ();
s = --input_line_pointer;
- c = get_symbol_end (); /* name's delimiter */
- /*
- * C is character after symbol.
- * That character's place in the input line is now '\0'.
- * S points to the beginning of the symbol.
- * [In case of pseudo-op, s->'.'.]
- * Input_line_pointer->'\0' where c was.
- */
- if (TC_START_LABEL(c, input_line_pointer))
+ c = get_symbol_end (); /* name's delimiter. */
+
+ /* C is character after symbol.
+ That character's place in the input line is now '\0'.
+ S points to the beginning of the symbol.
+ [In case of pseudo-op, s->'.'.]
+ Input_line_pointer->'\0' where c was. */
+ if (TC_START_LABEL (c, s, input_line_pointer))
{
if (flag_m68k_mri)
{
char *rest = input_line_pointer + 1;
/* In MRI mode, \tsym: set 0 is permitted. */
-
if (*rest == ':')
++rest;
+
if (*rest == ' ' || *rest == '\t')
++rest;
+
if ((strncasecmp (rest, "EQU", 3) == 0
|| strncasecmp (rest, "SET", 3) == 0)
&& (rest[3] == ' ' || rest[3] == '\t'))
}
}
- line_label = colon (s); /* user-defined label */
- *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */
- /* Input_line_pointer->after ':'. */
+ line_label = colon (s); /* User-defined label. */
+ /* Put ':' back for error messages' sake. */
+ *input_line_pointer++ = ':';
+#ifdef tc_check_label
+ tc_check_label (line_label);
+#endif
+ /* Input_line_pointer->after ':'. */
SKIP_WHITESPACE ();
-
-
}
- else if (c == '='
+ else if ((c == '=' && input_line_pointer[1] == '=')
|| ((c == ' ' || c == '\t')
&& input_line_pointer[1] == '='
+ && input_line_pointer[2] == '='))
+ {
+ equals (s, -1);
+ demand_empty_rest_of_line ();
+ }
+ else if ((c == '='
+ || ((c == ' ' || c == '\t')
+ && input_line_pointer[1] == '='))
#ifdef TC_EQUAL_IN_INSN
- && ! TC_EQUAL_IN_INSN (c, input_line_pointer)
+ && !TC_EQUAL_IN_INSN (c, s)
#endif
- ))
+ )
{
equals (s, 1);
demand_empty_rest_of_line ();
}
else
- { /* expect pseudo-op or machine instruction */
+ {
+ /* Expect pseudo-op or machine instruction. */
pop = NULL;
-#define IGNORE_OPCODE_CASE
-#ifdef IGNORE_OPCODE_CASE
+#ifndef TC_CASE_SENSITIVE
{
char *s2 = s;
+
+ strncpy (original_case_string, s2, sizeof (original_case_string));
+ original_case_string[sizeof (original_case_string) - 1] = 0;
+
while (*s2)
{
- if (isupper ((unsigned char) *s2))
- *s2 = tolower (*s2);
+ *s2 = TOLOWER (*s2);
s2++;
}
}
#endif
-
- if (flag_m68k_mri
-#ifdef NO_PSEUDO_DOT
- || 1
-#endif
- )
+ if (NO_PSEUDO_DOT || flag_m68k_mri)
{
- /* The MRI assembler and the m88k use pseudo-ops
- without a period. */
+ /* The MRI assembler uses pseudo-ops without
+ a period. */
pop = (pseudo_typeS *) hash_find (po_hash, s);
if (pop != NULL && pop->poc_handler == NULL)
pop = NULL;
}
if (pop != NULL
- || (! flag_m68k_mri && *s == '.'))
+ || (!flag_m68k_mri && *s == '.'))
{
- /*
- * PSEUDO - OP.
- *
- * WARNING: c has next char, which may be end-of-line.
- * We lookup the pseudo-op table with s+1 because we
- * already know that the pseudo-op begins with a '.'.
- */
+ /* PSEUDO - OP.
+
+ WARNING: c has next char, which may be end-of-line.
+ We lookup the pseudo-op table with s+1 because we
+ already know that the pseudo-op begins with a '.'. */
if (pop == NULL)
pop = (pseudo_typeS *) hash_find (po_hash, s + 1);
+ if (pop && !pop->poc_handler)
+ pop = NULL;
/* In MRI mode, we may need to insert an
- automatic alignment directive. What a hack
- this is. */
+ automatic alignment directive. What a hack
+ this is. */
if (mri_pending_align
&& (pop == NULL
- || ! ((pop->poc_handler == cons
- && pop->poc_val == 1)
- || (pop->poc_handler == s_space
- && pop->poc_val == 1)
+ || !((pop->poc_handler == cons
+ && pop->poc_val == 1)
+ || (pop->poc_handler == s_space
+ && pop->poc_val == 1)
#ifdef tc_conditional_pseudoop
- || tc_conditional_pseudoop (pop)
+ || tc_conditional_pseudoop (pop)
#endif
- || pop->poc_handler == s_if
- || pop->poc_handler == s_ifdef
- || pop->poc_handler == s_ifc
- || pop->poc_handler == s_ifeqs
- || pop->poc_handler == s_else
- || pop->poc_handler == s_endif
- || pop->poc_handler == s_globl
- || pop->poc_handler == s_ignore)))
+ || pop->poc_handler == s_if
+ || pop->poc_handler == s_ifdef
+ || pop->poc_handler == s_ifc
+ || pop->poc_handler == s_ifeqs
+ || pop->poc_handler == s_else
+ || pop->poc_handler == s_endif
+ || pop->poc_handler == s_globl
+ || pop->poc_handler == s_ignore)))
{
do_align (1, (char *) NULL, 0, 0);
mri_pending_align = 0;
+
if (line_label != NULL)
{
symbol_set_frag (line_label, frag_now);
}
}
- /* Print the error msg now, while we still can */
+ /* Print the error msg now, while we still can. */
if (pop == NULL)
{
- as_bad (_("Unknown pseudo-op: `%s'"), s);
+ char *end = input_line_pointer;
+
*input_line_pointer = c;
s_ignore (0);
+ c = *--input_line_pointer;
+ *input_line_pointer = '\0';
+ if (! macro_defined || ! try_macro (c, s))
+ {
+ *end = '\0';
+ as_bad (_("unknown pseudo-op: `%s'"), s);
+ *input_line_pointer++ = c;
+ }
continue;
}
- /* Put it back for error messages etc. */
+ /* Put it back for error messages etc. */
*input_line_pointer = c;
/* The following skip of whitespace is compulsory.
A well shaped space is sometimes all that separates
- keyword from operands. */
+ keyword from operands. */
if (c == ' ' || c == '\t')
input_line_pointer++;
- /*
- * Input_line is restored.
- * Input_line_pointer->1st non-blank char
- * after pseudo-operation.
- */
+
+ /* Input_line is restored.
+ Input_line_pointer->1st non-blank char
+ after pseudo-operation. */
(*pop->poc_handler) (pop->poc_val);
/* If that was .end, just get out now. */
}
else
{
- int inquote = 0;
-#ifdef QUOTES_IN_INSN
- int inescape = 0;
-#endif
-
- /* WARNING: c has char, which may be end-of-line. */
- /* Also: input_line_pointer->`\0` where c was. */
+ /* WARNING: c has char, which may be end-of-line. */
+ /* Also: input_line_pointer->`\0` where c was. */
*input_line_pointer = c;
- while (!is_end_of_line[(unsigned char) *input_line_pointer]
- || inquote
-#ifdef TC_EOL_IN_INSN
- || TC_EOL_IN_INSN (input_line_pointer)
-#endif
- )
- {
- if (flag_m68k_mri && *input_line_pointer == '\'')
- inquote = ! inquote;
-#ifdef QUOTES_IN_INSN
- if (inescape)
- inescape = 0;
- else if (*input_line_pointer == '"')
- inquote = ! inquote;
- else if (*input_line_pointer == '\\')
- inescape = 1;
-#endif
- input_line_pointer++;
- }
-
+ input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0);
c = *input_line_pointer;
*input_line_pointer = '\0';
generate_lineno_debug ();
- if (macro_defined)
- {
- sb out;
- const char *err;
-
- if (check_macro (s, &out, '\0', &err))
- {
- if (err != NULL)
- as_bad ("%s", err);
- *input_line_pointer++ = c;
- input_scrub_include_sb (&out,
- input_line_pointer);
- sb_kill (&out);
- buffer_limit =
- input_scrub_next_buffer (&input_line_pointer);
- continue;
- }
- }
+ if (macro_defined && try_macro (c, s))
+ continue;
if (mri_pending_align)
{
}
}
- md_assemble (s); /* Assemble 1 instruction. */
+ assemble_one (s); /* Assemble 1 instruction. */
*input_line_pointer++ = c;
/* We resume loop AFTER the end-of-line from
- this instruction. */
- } /* if (*s=='.') */
- } /* if c==':' */
+ this instruction. */
+ }
+ }
continue;
- } /* if (is_name_beginner(c) */
-
+ }
/* Empty statement? */
if (is_end_of_line[(unsigned char) c])
continue;
- if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB)
- && isdigit ((unsigned char) c))
+ if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c))
{
- /* local label ("4:") */
+ /* local label ("4:") */
char *backup = input_line_pointer;
HANDLE_CONDITIONAL_ASSEMBLY ();
temp = c - '0';
- while (isdigit ((unsigned char) *input_line_pointer))
+ /* Read the whole number. */
+ while (ISDIGIT (*input_line_pointer))
{
temp = (temp * 10) + *input_line_pointer - '0';
++input_line_pointer;
- } /* read the whole number */
+ }
if (LOCAL_LABELS_DOLLAR
&& *input_line_pointer == '$'
} /* local label ("4:") */
if (c && strchr (line_comment_chars, c))
- { /* Its a comment. Better say APP or NO_APP */
+ { /* Its a comment. Better say APP or NO_APP. */
+ sb sbuf;
char *ends;
char *new_buf;
char *new_tmp;
unsigned int new_length;
char *tmp_buf = 0;
- bump_line_counters ();
s = input_line_pointer;
if (strncmp (s, "APP\n", 4))
- continue; /* We ignore it */
+ {
+ /* We ignore it. */
+ ignore_rest_of_line ();
+ continue;
+ }
+ bump_line_counters ();
s += 4;
ends = strstr (s, "#NO_APP\n");
/* The end of the #APP wasn't in this buffer. We
keep reading in buffers until we find the #NO_APP
that goes with this #APP There is one. The specs
- guarentee it. . . */
+ guarantee it... */
tmp_len = buffer_limit - s;
- tmp_buf = xmalloc (tmp_len + 1);
+ tmp_buf = (char *) xmalloc (tmp_len + 1);
memcpy (tmp_buf, s, tmp_len);
do
{
else
num = buffer_limit - buffer;
- tmp_buf = xrealloc (tmp_buf, tmp_len + num);
+ tmp_buf = (char *) xrealloc (tmp_buf, tmp_len + num);
memcpy (tmp_buf + tmp_len, buffer, num);
tmp_len += num;
}
new_tmp = new_buf;
for (;;)
{
- int space;
- int size;
+ size_t space;
+ size_t size;
space = (new_buf + new_length) - new_tmp;
size = do_scrub_chars (scrub_from_string, new_tmp, space);
if (size < space)
{
- new_tmp += size;
+ new_tmp[size] = 0;
break;
}
- new_buf = xrealloc (new_buf, new_length + 100);
+ new_buf = (char *) xrealloc (new_buf, new_length + 100);
new_tmp = new_buf + new_length;
new_length += 100;
}
if (tmp_buf)
free (tmp_buf);
- old_buffer = buffer;
- old_input = input_line_pointer;
- old_limit = buffer_limit;
- buffer = new_buf;
- input_line_pointer = new_buf;
- buffer_limit = new_tmp;
+
+ /* We've "scrubbed" input to the preferred format. In the
+ process we may have consumed the whole of the remaining
+ file (and included files). We handle this formatted
+ input similar to that of macro expansion, letting
+ actual macro expansion (possibly nested) and other
+ input expansion work. Beware that in messages, line
+ numbers and possibly file names will be incorrect. */
+ new_length = strlen (new_buf);
+ sb_build (&sbuf, new_length);
+ sb_add_buffer (&sbuf, new_buf, new_length);
+ input_scrub_include_sb (&sbuf, input_line_pointer, 0);
+ sb_kill (&sbuf);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+ free (new_buf);
continue;
}
if (tc_unrecognized_line (c))
continue;
#endif
-
- /* as_warn("Junk character %d.",c); Now done by ignore_rest */
- input_line_pointer--; /* Report unknown char as ignored. */
- ignore_rest_of_line ();
- } /* while (input_line_pointer<buffer_limit) */
-
-#ifdef md_after_pass_hook
- md_after_pass_hook ();
-#endif
-
- if (old_buffer)
- {
- free (buffer);
- bump_line_counters ();
- if (old_input != 0)
- {
- buffer = old_buffer;
- input_line_pointer = old_input;
- buffer_limit = old_limit;
- old_buffer = 0;
- goto contin;
- }
+ input_line_pointer--;
+ /* Report unknown char as error. */
+ demand_empty_rest_of_line ();
}
- } /* while (more buffers to scan) */
+ }
quit:
+ symbol_set_value_now (&dot_symbol);
+
+#ifdef HANDLE_BUNDLE
+ if (bundle_lock_frag != NULL)
+ {
+ as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line,
+ _(".bundle_lock with no matching .bundle_unlock"));
+ bundle_lock_frag = NULL;
+ bundle_lock_frchain = NULL;
+ bundle_lock_depth = 0;
+ }
+#endif
#ifdef md_cleanup
- md_cleanup();
+ md_cleanup ();
+#endif
+ /* Close the input file. */
+ input_scrub_close ();
+#ifdef WARN_COMMENTS
+ {
+ if (warn_comment && found_comment)
+ as_warn_where (found_comment_file, found_comment,
+ "first comment found here");
+ }
#endif
- input_scrub_close (); /* Close the input file */
+}
+
+/* Convert O_constant expression EXP into the equivalent O_big representation.
+ Take the sign of the number from SIGN rather than X_add_number. */
+
+static void
+convert_to_bignum (expressionS *exp, int sign)
+{
+ valueT value;
+ unsigned int i;
+
+ value = exp->X_add_number;
+ for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++)
+ {
+ generic_bignum[i] = value & LITTLENUM_MASK;
+ value >>= LITTLENUM_NUMBER_OF_BITS;
+ }
+ /* Add a sequence of sign bits if the top bit of X_add_number is not
+ the sign of the original value. */
+ if ((exp->X_add_number < 0) == !sign)
+ generic_bignum[i++] = sign ? LITTLENUM_MASK : 0;
+ exp->X_op = O_big;
+ exp->X_add_number = i;
}
/* For most MRI pseudo-ops, the line actually ends at the first
for the m68k MRI assembler. */
char *
-mri_comment_field (stopcp)
- char *stopcp;
+mri_comment_field (char *stopcp)
{
-#ifdef TC_M68K
-
char *s;
+#ifdef TC_M68K
int inquote = 0;
know (flag_m68k_mri);
for (s = input_line_pointer;
- ((! is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t')
+ ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t')
|| inquote);
s++)
{
if (*s == '\'')
- inquote = ! inquote;
+ inquote = !inquote;
}
- *stopcp = *s;
- *s = '\0';
- return s;
-
#else
-
- char *s;
-
- for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++)
+ for (s = input_line_pointer;
+ !is_end_of_line[(unsigned char) *s];
+ s++)
;
+#endif
*stopcp = *s;
*s = '\0';
- return s;
-
-#endif
+ return s;
}
/* Skip to the end of an MRI comment field. */
void
-mri_comment_end (stop, stopc)
- char *stop;
- int stopc;
+mri_comment_end (char *stop, int stopc)
{
know (flag_mri);
input_line_pointer = stop;
*stop = stopc;
- while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
-void
-s_abort (ignore)
- int ignore ATTRIBUTE_UNUSED;
+void
+s_abort (int ignore ATTRIBUTE_UNUSED)
{
as_fatal (_(".abort detected. Abandoning ship."));
}
the maximum number of characters to skip when doing the alignment,
or 0 if there is no maximum. */
-static void
-do_align (n, fill, len, max)
- int n;
- char *fill;
- int len;
- int max;
+static void
+do_align (int n, char *fill, int len, int max)
{
- char default_fill;
+ if (now_seg == absolute_section)
+ {
+ if (fill != NULL)
+ while (len-- > 0)
+ if (*fill++ != '\0')
+ {
+ as_warn (_("ignoring fill value in absolute section"));
+ break;
+ }
+ fill = NULL;
+ len = 0;
+ }
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
#ifdef md_do_align
md_do_align (n, fill, len, max, just_record_alignment);
#endif
- if (fill == NULL)
+ /* Only make a frag if we HAVE to... */
+ if (n != 0 && !need_pass_2)
{
- if (subseg_text_p (now_seg))
- default_fill = NOP_OPCODE;
- else
- default_fill = 0;
- fill = &default_fill;
- len = 1;
- }
-
- /* Only make a frag if we HAVE to. . . */
- if (n != 0 && !need_pass_2)
- {
- if (len <= 1)
+ if (fill == NULL)
+ {
+ if (subseg_text_p (now_seg))
+ frag_align_code (n, max);
+ else
+ frag_align (n, 0, max);
+ }
+ else if (len <= 1)
frag_align (n, *fill, max);
else
frag_align_pattern (n, fill, len, max);
}
#ifdef md_do_align
- just_record_alignment:
+ just_record_alignment: ATTRIBUTE_UNUSED_LABEL
#endif
record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER);
(in bytes). A negative ARG is the negative of the length of the
fill pattern. BYTES_P is non-zero if the alignment value should be
interpreted as the byte boundary, rather than the power of 2. */
+#ifndef TC_ALIGN_LIMIT
+#define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1)
+#endif
static void
-s_align (arg, bytes_p)
- int arg;
- int bytes_p;
+s_align (int arg, int bytes_p)
{
- register unsigned int align;
+ unsigned int align_limit = TC_ALIGN_LIMIT;
+ unsigned int align;
char *stop = NULL;
- char stopc;
+ char stopc = 0;
offsetT fill = 0;
int max;
int fill_p;
if (arg < 0)
align = 0;
else
- align = arg; /* Default value from pseudo-op table */
+ align = arg; /* Default value from pseudo-op table. */
}
else
{
for (i = 0; (align & 1) == 0; align >>= 1, ++i)
;
if (align != 1)
- as_bad (_("Alignment not a power of 2"));
+ as_bad (_("alignment not a power of 2"));
+
align = i;
}
}
- if (align > 15)
+ if (align > align_limit)
{
- align = 15;
- as_bad (_("Alignment too large: %u assumed"), align);
+ align = align_limit;
+ as_warn (_("alignment too large: %u assumed"), align);
}
if (*input_line_pointer != ',')
}
}
- if (! fill_p)
+ if (!fill_p)
{
if (arg < 0)
as_warn (_("expected fill pattern missing"));
if (arg >= 0)
fill_len = 1;
else
- fill_len = - arg;
+ fill_len = -arg;
if (fill_len <= 1)
{
char fill_char;
/* Handle the .align pseudo-op on machines where ".align 4" means
align to a 4 byte boundary. */
-void
-s_align_bytes (arg)
- int arg;
+void
+s_align_bytes (int arg)
{
s_align (arg, 1);
}
/* Handle the .align pseudo-op on machines where ".align 4" means align
to a 2**4 boundary. */
-void
-s_align_ptwo (arg)
- int arg;
+void
+s_align_ptwo (int arg)
{
s_align (arg, 0);
}
-void
-s_comm (ignore)
- int ignore ATTRIBUTE_UNUSED;
+/* Switch in and out of alternate macro mode. */
+
+void
+s_altmacro (int on)
{
- register char *name;
- register char c;
- register char *p;
- offsetT temp;
- register symbolS *symbolP;
+ demand_empty_rest_of_line ();
+ macro_set_alternate (on);
+}
+
+/* Read a symbol name from input_line_pointer.
+
+ Stores the symbol name in a buffer and returns a pointer to this buffer.
+ The buffer is xalloc'ed. It is the caller's responsibility to free
+ this buffer.
+
+ The name is not left in the i_l_p buffer as it may need processing
+ to handle escape characters.
+
+ Advances i_l_p to the next non-whitespace character.
+
+ If a symbol name could not be read, the routine issues an error
+ messages, skips to the end of the line and returns NULL. */
+
+static char *
+read_symbol_name (void)
+{
+ char * name;
+ char * start;
+ char c;
+
+ c = *input_line_pointer++;
+
+ if (c == '"')
+ {
+#define SYM_NAME_CHUNK_LEN 128
+ ptrdiff_t len = SYM_NAME_CHUNK_LEN;
+ char * name_end;
+ unsigned int C;
+
+ start = name = xmalloc (len + 1);
+
+ name_end = name + SYM_NAME_CHUNK_LEN;
+
+ while (is_a_char (C = next_char_of_string ()))
+ {
+ if (name >= name_end)
+ {
+ ptrdiff_t sofar;
+
+ sofar = name - start;
+ len += SYM_NAME_CHUNK_LEN;
+ start = xrealloc (start, len + 1);
+ name_end = start + len;
+ name = start + sofar;
+ }
+
+ *name++ = (char) C;
+ }
+ *name = 0;
+
+ /* Since quoted symbol names can contain non-ASCII characters,
+ check the string and warn if it cannot be recognised by the
+ current character set. */
+ if (mbstowcs (NULL, name, len) == (size_t) -1)
+ as_warn (_("symbol name not recognised in the current locale"));
+ }
+ else if (is_name_beginner (c) || c == '\001')
+ {
+ ptrdiff_t len;
+
+ name = input_line_pointer - 1;
+
+ /* We accept \001 in a name in case this is
+ being called with a constructed string. */
+ while (is_part_of_name (c = *input_line_pointer++)
+ || c == '\001')
+ ;
+
+ len = (input_line_pointer - name) - 1;
+ start = xmalloc (len + 1);
+
+ memcpy (start, name, len);
+ start[len] = 0;
+
+ /* Skip a name ender char if one is present. */
+ if (! is_name_ender (c))
+ --input_line_pointer;
+ }
+ else
+ name = start = NULL;
+
+ if (name == start)
+ {
+ as_bad (_("expected symbol name"));
+ ignore_rest_of_line ();
+ return NULL;
+ }
+
+ SKIP_WHITESPACE ();
+
+ return start;
+}
+
+
+symbolS *
+s_comm_internal (int param,
+ symbolS *(*comm_parse_extra) (int, symbolS *, addressT))
+{
+ char *name;
+ offsetT temp, size;
+ symbolS *symbolP = NULL;
char *stop = NULL;
- char stopc;
+ char stopc = 0;
+ expressionS exp;
if (flag_mri)
stop = mri_comment_field (&stopc);
- name = input_line_pointer;
- c = get_symbol_end ();
- /* just after name is now '\0' */
- p = input_line_pointer;
- *p = c;
- SKIP_WHITESPACE ();
- if (*input_line_pointer != ',')
+ if ((name = read_symbol_name ()) == NULL)
+ goto out;
+
+ /* Accept an optional comma after the name. The comma used to be
+ required, but Irix 5 cc does not generate it for .lcomm. */
+ if (*input_line_pointer == ',')
+ input_line_pointer++;
+
+ temp = get_absolute_expr (&exp);
+ size = temp;
+ size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1;
+ if (exp.X_op == O_absent)
{
- as_bad (_("Expected comma after symbol-name: rest of line ignored."));
+ as_bad (_("missing size expression"));
ignore_rest_of_line ();
- if (flag_mri)
- mri_comment_end (stop, stopc);
- return;
+ goto out;
}
- input_line_pointer++; /* skip ',' */
- if ((temp = get_absolute_expression ()) < 0)
+ else if (temp != size || !exp.X_unsigned)
{
- as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
+ as_warn (_("size (%ld) out of range, ignored"), (long) temp);
ignore_rest_of_line ();
- if (flag_mri)
- mri_comment_end (stop, stopc);
- return;
+ goto out;
}
- *p = 0;
+
symbolP = symbol_find_or_make (name);
- *p = c;
- if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
- {
- as_bad (_("Ignoring attempt to re-define symbol `%s'."),
- S_GET_NAME (symbolP));
- ignore_rest_of_line ();
- if (flag_mri)
- mri_comment_end (stop, stopc);
- return;
- }
- if (S_GET_VALUE (symbolP))
+ if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
+ && !S_IS_COMMON (symbolP))
{
- 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);
+ if (!S_IS_VOLATILE (symbolP))
+ {
+ symbolP = NULL;
+ as_bad (_("symbol `%s' is already defined"), name);
+ ignore_rest_of_line ();
+ goto out;
+ }
+ symbolP = symbol_clone (symbolP, 1);
+ S_SET_SEGMENT (symbolP, undefined_section);
+ S_SET_VALUE (symbolP, 0);
+ symbol_set_frag (symbolP, &zero_address_frag);
+ S_CLEAR_VOLATILE (symbolP);
}
+
+ size = S_GET_VALUE (symbolP);
+ if (size == 0)
+ size = temp;
+ else if (size != temp)
+ as_warn (_("size of \"%s\" is already %ld; not changing to %ld"),
+ name, (long) size, (long) temp);
+
+ if (comm_parse_extra != NULL)
+ symbolP = (*comm_parse_extra) (param, symbolP, size);
else
{
- S_SET_VALUE (symbolP, (valueT) temp);
+ S_SET_VALUE (symbolP, (valueT) size);
S_SET_EXTERNAL (symbolP);
+ S_SET_SEGMENT (symbolP, bfd_com_section_ptr);
}
-#ifdef OBJ_VMS
- {
- extern int flag_one;
- if ( (!temp) || !flag_one)
- S_GET_OTHER(symbolP) = const_flag;
- }
-#endif /* not OBJ_VMS */
- know (symbolP->sy_frag == &zero_address_frag);
demand_empty_rest_of_line ();
-
+ out:
if (flag_mri)
mri_comment_end (stop, stopc);
-} /* s_comm() */
+ if (name != NULL)
+ free (name);
+ return symbolP;
+}
+
+void
+s_comm (int ignore)
+{
+ s_comm_internal (ignore, NULL);
+}
/* The MRI COMMON pseudo-op. We handle this by creating a common
symbol with the appropriate name. We make s_space do the right
thing by increasing the size. */
void
-s_mri_common (small)
- int small ATTRIBUTE_UNUSED;
+s_mri_common (int small ATTRIBUTE_UNUSED)
{
char *name;
char c;
symbolS *sym;
offsetT align;
char *stop = NULL;
- char stopc;
+ char stopc = 0;
- if (! flag_mri)
+ if (!flag_mri)
{
s_comm (0);
return;
SKIP_WHITESPACE ();
name = input_line_pointer;
- if (! isdigit ((unsigned char) *name))
+ if (!ISDIGIT (*name))
c = get_symbol_end ();
else
{
{
++input_line_pointer;
}
- while (isdigit ((unsigned char) *input_line_pointer));
+ while (ISDIGIT (*input_line_pointer));
+
c = *input_line_pointer;
*input_line_pointer = '\0';
align = get_absolute_expression ();
}
- if (S_IS_DEFINED (sym) && ! S_IS_COMMON (sym))
+ if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym))
{
- as_bad (_("attempt to re-define symbol `%s'"), S_GET_NAME (sym));
+ as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym));
ignore_rest_of_line ();
mri_comment_end (stop, stopc);
return;
}
S_SET_EXTERNAL (sym);
+ S_SET_SEGMENT (sym, bfd_com_section_ptr);
mri_common_symbol = sym;
#ifdef S_SET_ALIGN
if (align != 0)
S_SET_ALIGN (sym, align);
+#else
+ (void) align;
#endif
if (line_label != NULL)
}
void
-s_data (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_data (int ignore ATTRIBUTE_UNUSED)
{
segT section;
- register int temp;
+ int temp;
temp = get_absolute_expression ();
if (flag_readonly_data_in_text)
subseg_set (section, (subsegT) temp);
-#ifdef OBJ_VMS
- const_flag = 0;
-#endif
demand_empty_rest_of_line ();
}
definition for .file; the APPFILE argument is 1 for .appfile, 0 for
.file. */
-void
-s_app_file (appfile)
- int appfile;
+void
+s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED)
+{
+#ifdef LISTING
+ if (listing)
+ listing_source_file (file);
+#endif
+ register_dependency (file);
+#ifdef obj_app_file
+ obj_app_file (file, appfile);
+#endif
+}
+
+void
+s_app_file (int appfile)
{
- register char *s;
+ char *s;
int length;
- /* Some assemblers tolerate immediately following '"' */
+ /* Some assemblers tolerate immediately following '"'. */
if ((s = demand_copy_string (&length)) != 0)
{
- /* If this is a fake .appfile, a fake newline was inserted into
- the buffer. Passing -2 to new_logical_line tells it to
- account for it. */
int may_omit
- = (! new_logical_line (s, appfile ? -2 : -1) && appfile);
+ = (!new_logical_line_flags (s, -1, 1) && appfile);
/* In MRI mode, the preprocessor may have inserted an extraneous
- backquote. */
+ backquote. */
if (flag_m68k_mri
&& *input_line_pointer == '\''
&& is_end_of_line[(unsigned char) input_line_pointer[1]])
++input_line_pointer;
demand_empty_rest_of_line ();
- if (! may_omit)
- {
-#ifdef LISTING
- if (listing)
- listing_source_file (s);
-#endif
- register_dependency (s);
-#ifdef obj_app_file
- obj_app_file (s);
-#endif
- }
+ if (!may_omit)
+ s_app_file_string (s, appfile);
}
}
+static int
+get_linefile_number (int *flag)
+{
+ SKIP_WHITESPACE ();
+
+ if (*input_line_pointer < '0' || *input_line_pointer > '9')
+ return 0;
+
+ *flag = get_absolute_expression ();
+
+ return 1;
+}
+
/* Handle the .appline pseudo-op. This is automatically generated by
do_scrub_chars when a preprocessor # line comment is seen. This
default definition may be overridden by the object or CPU specific
pseudo-ops. */
void
-s_app_line (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_app_line (int appline)
{
+ char *file = NULL;
int l;
/* The given number is that of the next line. */
- l = get_absolute_expression () - 1;
- if (l < 0)
+ if (appline)
+ l = get_absolute_expression ();
+ else if (!get_linefile_number (&l))
+ {
+ ignore_rest_of_line ();
+ return;
+ }
+
+ l--;
+
+ if (l < -1)
/* Some of the back ends can't deal with non-positive line numbers.
- Besides, it's silly. */
- as_warn (_("Line numbers must be positive; line number %d rejected."), l+1);
+ Besides, it's silly. GCC however will generate a line number of
+ zero when it is pre-processing builtins for assembler-with-cpp files:
+
+ # 0 "<built-in>"
+
+ We do not want to barf on this, especially since such files are used
+ in the GCC and GDB testsuites. So we check for negative line numbers
+ rather than non-positive line numbers. */
+ as_warn (_("line numbers must be positive; line number %d rejected"),
+ l + 1);
else
{
- new_logical_line ((char *) NULL, l);
+ int flags = 0;
+ int length = 0;
+
+ if (!appline)
+ {
+ SKIP_WHITESPACE ();
+
+ if (*input_line_pointer == '"')
+ file = demand_copy_string (&length);
+
+ if (file)
+ {
+ int this_flag;
+
+ while (get_linefile_number (&this_flag))
+ switch (this_flag)
+ {
+ /* From GCC's cpp documentation:
+ 1: start of a new file.
+ 2: returning to a file after having included
+ another file.
+ 3: following text comes from a system header file.
+ 4: following text should be treated as extern "C".
+
+ 4 is nonsensical for the assembler; 3, we don't
+ care about, so we ignore it just in case a
+ system header file is included while
+ preprocessing assembly. So 1 and 2 are all we
+ care about, and they are mutually incompatible.
+ new_logical_line_flags() demands this. */
+ case 1:
+ case 2:
+ if (flags && flags != (1 << this_flag))
+ as_warn (_("incompatible flag %i in line directive"),
+ this_flag);
+ else
+ flags |= 1 << this_flag;
+ break;
+
+ case 3:
+ case 4:
+ /* We ignore these. */
+ break;
+
+ default:
+ as_warn (_("unsupported flag %i in line directive"),
+ this_flag);
+ break;
+ }
+
+ if (!is_end_of_line[(unsigned char)*input_line_pointer])
+ file = 0;
+ }
+ }
+
+ if (appline || file)
+ {
+ new_logical_line_flags (file, l, flags);
#ifdef LISTING
- if (listing)
- listing_source_line (l);
+ if (listing)
+ listing_source_line (l);
#endif
+ }
}
- demand_empty_rest_of_line ();
+ if (appline || file)
+ demand_empty_rest_of_line ();
+ else
+ ignore_rest_of_line ();
}
/* Handle the .end pseudo-op. Actually, the real work is done in
read_a_source_file. */
void
-s_end (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_end (int ignore ATTRIBUTE_UNUSED)
{
if (flag_mri)
{
/* The MRI assembler permits the start symbol to follow .end,
- but we don't support that. */
+ but we don't support that. */
SKIP_WHITESPACE ();
- if (! is_end_of_line[(unsigned char) *input_line_pointer]
+ if (!is_end_of_line[(unsigned char) *input_line_pointer]
&& *input_line_pointer != '*'
&& *input_line_pointer != '!')
as_warn (_("start address not supported"));
/* Handle the .err pseudo-op. */
void
-s_err (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_err (int ignore ATTRIBUTE_UNUSED)
{
as_bad (_(".err encountered"));
demand_empty_rest_of_line ();
}
+/* Handle the .error and .warning pseudo-ops. */
+
+void
+s_errwarn (int err)
+{
+ int len;
+ /* The purpose for the conditional assignment is not to
+ internationalize the directive itself, but that we need a
+ self-contained message, one that can be passed like the
+ demand_copy_C_string return value, and with no assumption on the
+ location of the name of the directive within the message. */
+ char *msg
+ = (err ? _(".error directive invoked in source file")
+ : _(".warning directive invoked in source file"));
+
+ if (!is_it_end_of_statement ())
+ {
+ if (*input_line_pointer != '\"')
+ {
+ as_bad (_("%s argument must be a string"),
+ err ? ".error" : ".warning");
+ ignore_rest_of_line ();
+ return;
+ }
+
+ msg = demand_copy_C_string (&len);
+ if (msg == NULL)
+ return;
+ }
+
+ if (err)
+ as_bad ("%s", msg);
+ else
+ as_warn ("%s", msg);
+ demand_empty_rest_of_line ();
+}
+
/* Handle the MRI fail pseudo-op. */
void
-s_fail (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_fail (int ignore ATTRIBUTE_UNUSED)
{
offsetT temp;
char *stop = NULL;
- char stopc;
+ char stopc = 0;
if (flag_mri)
stop = mri_comment_field (&stopc);
mri_comment_end (stop, stopc);
}
-void
-s_fill (ignore)
- int ignore ATTRIBUTE_UNUSED;
+void
+s_fill (int ignore ATTRIBUTE_UNUSED)
{
expressionS rep_exp;
long size = 1;
- register long fill = 0;
+ long fill = 0;
char *p;
#ifdef md_flush_pending_output
md_flush_pending_output ();
#endif
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
get_known_segmented_expression (&rep_exp);
if (*input_line_pointer == ',')
{
#define BSD_FILL_SIZE_CROCK_8 (8)
if (size > BSD_FILL_SIZE_CROCK_8)
{
- as_warn (_(".fill size clamped to %d."), BSD_FILL_SIZE_CROCK_8);
+ as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8);
size = BSD_FILL_SIZE_CROCK_8;
}
if (size < 0)
{
- as_warn (_("Size negative: .fill ignored."));
+ as_warn (_("size negative; .fill ignored"));
size = 0;
}
else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0)
{
if (rep_exp.X_add_number < 0)
- as_warn (_("Repeat < 0, .fill ignored"));
+ as_warn (_("repeat < 0; .fill ignored"));
size = 0;
}
p = frag_var (rs_space, (int) size, (int) size,
(relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0);
}
+
memset (p, 0, (unsigned int) size);
+
/* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX
- * flavoured AS. The following bizzare behaviour is to be
- * compatible with above. I guess they tried to take up to 8
- * bytes from a 4-byte expression and they forgot to sign
- * extend. Un*x Sux. */
+ flavoured AS. The following bizarre behaviour is to be
+ compatible with above. I guess they tried to take up to 8
+ bytes from a 4-byte expression and they forgot to sign
+ extend. */
#define BSD_FILL_SIZE_CROCK_4 (4)
md_number_to_chars (p, (valueT) fill,
(size > BSD_FILL_SIZE_CROCK_4
? BSD_FILL_SIZE_CROCK_4
: (int) size));
/* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes)
- * but emits no error message because it seems a legal thing to do.
- * It is a degenerate case of .fill but could be emitted by a compiler.
- */
+ but emits no error message because it seems a legal thing to do.
+ It is a degenerate case of .fill but could be emitted by a
+ compiler. */
}
demand_empty_rest_of_line ();
}
-void
-s_globl (ignore)
- int ignore ATTRIBUTE_UNUSED;
+void
+s_globl (int ignore ATTRIBUTE_UNUSED)
{
char *name;
int c;
symbolS *symbolP;
char *stop = NULL;
- char stopc;
+ char stopc = 0;
if (flag_mri)
stop = mri_comment_field (&stopc);
do
{
- name = input_line_pointer;
- c = get_symbol_end ();
+ if ((name = read_symbol_name ()) == NULL)
+ return;
+
symbolP = symbol_find_or_make (name);
S_SET_EXTERNAL (symbolP);
- *input_line_pointer = c;
SKIP_WHITESPACE ();
c = *input_line_pointer;
if (c == ',')
{
input_line_pointer++;
SKIP_WHITESPACE ();
- if (*input_line_pointer == '\n')
+ if (is_end_of_line[(unsigned char) *input_line_pointer])
c = '\n';
}
+
+ free (name);
}
while (c == ',');
/* Handle the MRI IRP and IRPC pseudo-ops. */
void
-s_irp (irpc)
- int irpc;
+s_irp (int irpc)
{
- char *file;
+ char *file, *eol;
unsigned int line;
sb s;
const char *err;
as_where (&file, &line);
- sb_new (&s);
- while (! is_end_of_line[(unsigned char) *input_line_pointer])
- sb_add_char (&s, *input_line_pointer++);
+ eol = find_end_of_line (input_line_pointer, 0);
+ sb_build (&s, eol - input_line_pointer);
+ sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer);
+ input_line_pointer = eol;
sb_new (&out);
- err = expand_irp (irpc, 0, &s, &out, get_line_sb, '\0');
+ err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb);
if (err != NULL)
as_bad_where (file, line, "%s", err);
sb_kill (&s);
- input_scrub_include_sb (&out, input_line_pointer);
+ input_scrub_include_sb (&out, input_line_pointer, 1);
sb_kill (&out);
buffer_limit = input_scrub_next_buffer (&input_line_pointer);
}
which is what to do about duplicates. */
void
-s_linkonce (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_linkonce (int ignore ATTRIBUTE_UNUSED)
{
enum linkonce_type type;
type = LINKONCE_DISCARD;
- if (! is_end_of_line[(unsigned char) *input_line_pointer])
+ if (!is_end_of_line[(unsigned char) *input_line_pointer])
{
char *s;
char c;
#ifdef obj_handle_link_once
obj_handle_link_once (type);
#else /* ! defined (obj_handle_link_once) */
-#ifdef BFD_ASSEMBLER
{
flagword flags;
flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
break;
}
- if (! bfd_set_section_flags (stdoutput, now_seg, flags))
+ if (!bfd_set_section_flags (stdoutput, now_seg, flags))
as_bad (_("bfd_set_section_flags: %s"),
bfd_errmsg (bfd_get_error ()));
}
-#else /* ! defined (BFD_ASSEMBLER) */
- as_warn (_(".linkonce is not supported for this object file format"));
-#endif /* ! defined (BFD_ASSEMBLER) */
#endif /* ! defined (obj_handle_link_once) */
demand_empty_rest_of_line ();
}
-static void
-s_lcomm_internal (needs_align, bytes_p)
- /* 1 if this was a ".bss" directive, which may require a 3rd argument
- (alignment); 0 if it was an ".lcomm" (2 args only) */
- int needs_align;
- /* 1 if the alignment value should be interpreted as the byte boundary,
- rather than the power of 2. */
- int bytes_p;
+void
+bss_alloc (symbolS *symbolP, addressT size, int align)
{
- register char *name;
- register char c;
- register char *p;
- register int temp;
- register symbolS *symbolP;
+ char *pfrag;
segT current_seg = now_seg;
subsegT current_subseg = now_subseg;
- const int max_alignment = 15;
- int align = 0;
segT bss_seg = bss_section;
- name = input_line_pointer;
- c = get_symbol_end ();
- p = input_line_pointer;
- *p = c;
- SKIP_WHITESPACE ();
-
- /* Accept an optional comma after the name. The comma used to be
- required, but Irix 5 cc does not generate it. */
- if (*input_line_pointer == ',')
- {
- ++input_line_pointer;
- SKIP_WHITESPACE ();
- }
-
- if (*input_line_pointer == '\n')
- {
- as_bad (_("Missing size expression"));
- return;
- }
-
- if ((temp = get_absolute_expression ()) < 0)
- {
- as_warn (_("BSS length (%d.) <0! Ignored."), temp);
- ignore_rest_of_line ();
- return;
- }
-
#if defined (TC_MIPS) || defined (TC_ALPHA)
if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour
|| OUTPUT_FLAVOR == bfd_target_elf_flavour)
{
/* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */
- if (temp <= bfd_get_gp_size (stdoutput))
+ if (size <= bfd_get_gp_size (stdoutput))
{
bss_seg = subseg_new (".sbss", 1);
seg_info (bss_seg)->bss = 1;
-#ifdef BFD_ASSEMBLER
- if (! bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC))
+ if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC))
as_warn (_("error setting flags for \".sbss\": %s"),
bfd_errmsg (bfd_get_error ()));
-#endif
}
}
#endif
- if (!needs_align)
- {
- /* FIXME. This needs to be machine independent. */
- if (temp >= 8)
- align = 3;
- else if (temp >= 4)
- align = 2;
- else if (temp >= 2)
- align = 1;
- else
- align = 0;
-
-#ifdef OBJ_EVAX
- /* FIXME: This needs to be done in a more general fashion. */
- align = 3;
-#endif
+ subseg_set (bss_seg, 1);
- record_alignment(bss_seg, align);
- }
-
- if (needs_align)
+ if (align)
{
- align = 0;
- SKIP_WHITESPACE ();
- if (*input_line_pointer != ',')
- {
- as_bad (_("Expected comma after size"));
- ignore_rest_of_line ();
- return;
- }
- input_line_pointer++;
- SKIP_WHITESPACE ();
- if (*input_line_pointer == '\n')
- {
- as_bad (_("Missing alignment"));
- return;
- }
- align = get_absolute_expression ();
- if (bytes_p)
- {
- /* Convert to a power of 2. */
- if (align != 0)
- {
- unsigned int i;
-
- for (i = 0; (align & 1) == 0; align >>= 1, ++i)
- ;
- if (align != 1)
- as_bad (_("Alignment not a power of 2"));
- align = i;
- }
- }
- if (align > max_alignment)
- {
- align = max_alignment;
- as_warn (_("Alignment too large: %d. assumed."), align);
- }
- else if (align < 0)
- {
- align = 0;
- as_warn (_("Alignment negative. 0 assumed."));
- }
record_alignment (bss_seg, align);
- } /* if needs align */
- else
- {
- /* Assume some objects may require alignment on some systems. */
-#if defined (TC_ALPHA) && ! defined (VMS)
- if (temp > 1)
- {
- align = ffs (temp) - 1;
- if (temp % (1 << align))
- abort ();
- }
-#endif
+ frag_align (align, 0, 0);
}
- *p = 0;
- symbolP = symbol_find_or_make (name);
- *p = c;
-
- if (
-#if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) \
- || defined (OBJ_BOUT) || defined (OBJ_MAYBE_BOUT))
-#ifdef BFD_ASSEMBLER
- (OUTPUT_FLAVOR != bfd_target_aout_flavour
- || (S_GET_OTHER (symbolP) == 0 && S_GET_DESC (symbolP) == 0)) &&
-#else
- (S_GET_OTHER (symbolP) == 0 && S_GET_DESC (symbolP) == 0) &&
-#endif
-#endif
- (S_GET_SEGMENT (symbolP) == bss_seg
- || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0)))
- {
- char *pfrag;
-
- subseg_set (bss_seg, 1);
+ /* Detach from old frag. */
+ if (S_GET_SEGMENT (symbolP) == bss_seg)
+ symbol_get_frag (symbolP)->fr_symbol = NULL;
- if (align)
- frag_align (align, 0, 0);
- /* detach from old frag */
- if (S_GET_SEGMENT (symbolP) == bss_seg)
- symbol_get_frag (symbolP)->fr_symbol = NULL;
+ symbol_set_frag (symbolP, frag_now);
+ pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL);
+ *pfrag = 0;
- symbol_set_frag (symbolP, frag_now);
- pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP,
- (offsetT) temp, (char *) 0);
- *pfrag = 0;
-
- S_SET_SEGMENT (symbolP, bss_seg);
+#ifdef S_SET_SIZE
+ S_SET_SIZE (symbolP, size);
+#endif
+ S_SET_SEGMENT (symbolP, bss_seg);
#ifdef OBJ_COFF
- /* The symbol may already have been created with a preceding
- ".globl" directive -- be careful not to step on storage class
- in that case. Otherwise, set it to static. */
- if (S_GET_STORAGE_CLASS (symbolP) != C_EXT)
- {
- S_SET_STORAGE_CLASS (symbolP, C_STAT);
- }
+ /* The symbol may already have been created with a preceding
+ ".globl" directive -- be careful not to step on storage class
+ in that case. Otherwise, set it to static. */
+ if (S_GET_STORAGE_CLASS (symbolP) != C_EXT)
+ S_SET_STORAGE_CLASS (symbolP, C_STAT);
#endif /* OBJ_COFF */
-#ifdef S_SET_SIZE
- S_SET_SIZE (symbolP, temp);
-#endif
- }
- else
- as_bad (_("Ignoring attempt to re-define symbol `%s'."),
- S_GET_NAME (symbolP));
-
subseg_set (current_seg, current_subseg);
-
- demand_empty_rest_of_line ();
-} /* s_lcomm_internal() */
-
-void
-s_lcomm (needs_align)
- int needs_align;
-{
- s_lcomm_internal (needs_align, 0);
}
-void s_lcomm_bytes (needs_align)
- int needs_align;
+offsetT
+parse_align (int align_bytes)
{
- s_lcomm_internal (needs_align, 1);
-}
+ expressionS exp;
+ addressT align;
-void
-s_lsym (ignore)
- int ignore ATTRIBUTE_UNUSED;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer != ',')
+ {
+ no_align:
+ as_bad (_("expected alignment after size"));
+ ignore_rest_of_line ();
+ return -1;
+ }
+
+ input_line_pointer++;
+ SKIP_WHITESPACE ();
+
+ align = get_absolute_expr (&exp);
+ if (exp.X_op == O_absent)
+ goto no_align;
+
+ if (!exp.X_unsigned)
+ {
+ as_warn (_("alignment negative; 0 assumed"));
+ align = 0;
+ }
+
+ if (align_bytes && align != 0)
+ {
+ /* convert to a power of 2 alignment */
+ unsigned int alignp2 = 0;
+ while ((align & 1) == 0)
+ align >>= 1, ++alignp2;
+ if (align != 1)
+ {
+ as_bad (_("alignment not a power of 2"));
+ ignore_rest_of_line ();
+ return -1;
+ }
+ align = alignp2;
+ }
+ return align;
+}
+
+/* Called from s_comm_internal after symbol name and size have been
+ parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only),
+ 1 if this was a ".bss" directive which has a 3rd argument
+ (alignment as a power of 2), or 2 if this was a ".bss" directive
+ with alignment in bytes. */
+
+symbolS *
+s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size)
+{
+ addressT align = 0;
+
+ if (needs_align)
+ {
+ align = parse_align (needs_align - 1);
+ if (align == (addressT) -1)
+ return NULL;
+ }
+ else
+ /* Assume some objects may require alignment on some systems. */
+ TC_IMPLICIT_LCOMM_ALIGNMENT (size, align);
+
+ bss_alloc (symbolP, size, align);
+ return symbolP;
+}
+
+void
+s_lcomm (int needs_align)
+{
+ s_comm_internal (needs_align, s_lcomm_internal);
+}
+
+void
+s_lcomm_bytes (int needs_align)
+{
+ s_comm_internal (needs_align * 2, s_lcomm_internal);
+}
+
+void
+s_lsym (int ignore ATTRIBUTE_UNUSED)
{
- register char *name;
- register char c;
- register char *p;
+ char *name;
expressionS exp;
- register symbolS *symbolP;
+ symbolS *symbolP;
+
+ /* We permit ANY defined expression: BSD4.2 demands constants. */
+ if ((name = read_symbol_name ()) == NULL)
+ return;
- /* we permit ANY defined expression: BSD4.2 demands constants */
- name = input_line_pointer;
- c = get_symbol_end ();
- p = input_line_pointer;
- *p = c;
- SKIP_WHITESPACE ();
if (*input_line_pointer != ',')
{
- *p = 0;
- as_bad (_("Expected comma after name \"%s\""), name);
- *p = c;
- ignore_rest_of_line ();
- return;
+ as_bad (_("expected comma after \"%s\""), name);
+ goto err_out;
}
+
input_line_pointer++;
- expression (&exp);
+ expression_and_evaluate (&exp);
+
if (exp.X_op != O_constant
&& exp.X_op != O_register)
{
as_bad (_("bad expression"));
- ignore_rest_of_line ();
- return;
+ goto err_out;
}
- *p = 0;
- symbolP = symbol_find_or_make (name);
- /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 &&
- symbolP->sy_desc == 0) out of this test because coff doesn't have
- those fields, and I can't see when they'd ever be tripped. I
- don't think I understand why they were here so I may have
- introduced a bug. As recently as 1.37 didn't have this test
- anyway. xoxorich. */
+ symbolP = symbol_find_or_make (name);
- if (S_GET_SEGMENT (symbolP) == undefined_section
- && S_GET_VALUE (symbolP) == 0)
+ if (S_GET_SEGMENT (symbolP) == undefined_section)
{
/* The name might be an undefined .global symbol; be sure to
- keep the "external" bit. */
+ keep the "external" bit. */
S_SET_SEGMENT (symbolP,
(exp.X_op == O_constant
? absolute_section
}
else
{
- as_bad (_("Symbol %s already defined"), name);
+ as_bad (_("symbol `%s' is already defined"), name);
}
- *p = c;
+
demand_empty_rest_of_line ();
-} /* s_lsym() */
+ free (name);
+ return;
+
+ err_out:
+ ignore_rest_of_line ();
+ free (name);
+ return;
+}
-/* Read a line into an sb. */
+/* Read a line into an sb. Returns the character that ended the line
+ or zero if there are no more lines. */
static int
-get_line_sb (line)
- sb *line;
+get_line_sb (sb *line, int in_macro)
{
- char quote1, quote2, inquote;
+ char *eol;
if (input_line_pointer[-1] == '\n')
bump_line_counters ();
return 0;
}
- /* If app.c sets any other characters to LEX_IS_STRINGQUOTE, this
- code needs to be changed. */
- if (! flag_m68k_mri)
- quote1 = '"';
- else
- quote1 = '\0';
+ eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro);
+ sb_add_buffer (line, input_line_pointer, eol - input_line_pointer);
+ input_line_pointer = eol;
- quote2 = '\0';
- if (flag_m68k_mri)
- quote2 = '\'';
-#ifdef LEX_IS_STRINGQUOTE
- quote2 = '\'';
-#endif
+ /* Don't skip multiple end-of-line characters, because that breaks support
+ for the IA-64 stop bit (;;) which looks like two consecutive end-of-line
+ characters but isn't. Instead just skip one end of line character and
+ return the character skipped so that the caller can re-insert it if
+ necessary. */
+ return *input_line_pointer++;
+}
- inquote = '\0';
- while (! is_end_of_line[(unsigned char) *input_line_pointer]
- || (inquote != '\0' && *input_line_pointer != '\n'))
- {
- if (inquote == *input_line_pointer)
- inquote = '\0';
- else if (inquote == '\0')
- {
- if (*input_line_pointer == quote1)
- inquote = quote1;
- else if (*input_line_pointer == quote2)
- inquote = quote2;
- }
- sb_add_char (line, *input_line_pointer++);
- }
- while (input_line_pointer < buffer_limit
- && is_end_of_line[(unsigned char) *input_line_pointer])
- {
- if (input_line_pointer[-1] == '\n')
- bump_line_counters ();
- ++input_line_pointer;
- }
- return 1;
+static size_t
+get_non_macro_line_sb (sb *line)
+{
+ return get_line_sb (line, 0);
}
-/* Define a macro. This is an interface to macro.c, which is shared
- between gas and gasp. */
+static size_t
+get_macro_line_sb (sb *line)
+{
+ return get_line_sb (line, 1);
+}
+
+/* Define a macro. This is an interface to macro.c. */
void
-s_macro (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_macro (int ignore ATTRIBUTE_UNUSED)
{
- char *file;
+ char *file, *eol;
unsigned int line;
sb s;
- sb label;
const char *err;
const char *name;
as_where (&file, &line);
- sb_new (&s);
- while (! is_end_of_line[(unsigned char) *input_line_pointer])
- sb_add_char (&s, *input_line_pointer++);
+ eol = find_end_of_line (input_line_pointer, 0);
+ sb_build (&s, eol - input_line_pointer);
+ sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer);
+ input_line_pointer = eol;
- sb_new (&label);
if (line_label != NULL)
- sb_add_string (&label, S_GET_NAME (line_label));
+ {
+ sb label;
+ size_t len;
- err = define_macro (0, &s, &label, get_line_sb, &name);
+ name = S_GET_NAME (line_label);
+ len = strlen (name);
+ sb_build (&label, len);
+ sb_add_buffer (&label, name, len);
+ err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name);
+ sb_kill (&label);
+ }
+ else
+ err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name);
if (err != NULL)
- as_bad_where (file, line, "%s", err);
+ as_bad_where (file, line, err, name);
else
{
if (line_label != NULL)
{
- S_SET_SEGMENT (line_label, undefined_section);
+ S_SET_SEGMENT (line_label, absolute_section);
S_SET_VALUE (line_label, 0);
symbol_set_frag (line_label, &zero_address_frag);
}
- if (((flag_m68k_mri
-#ifdef NO_PSEUDO_DOT
- || 1
-#endif
- )
+ if (((NO_PSEUDO_DOT || flag_m68k_mri)
&& hash_find (po_hash, name) != NULL)
- || (! flag_m68k_mri
+ || (!flag_m68k_mri
&& *name == '.'
&& hash_find (po_hash, name + 1) != NULL))
- as_warn (_("attempt to redefine pseudo-op `%s' ignored"),
+ as_warn_where (file,
+ line,
+ _("attempt to redefine pseudo-op `%s' ignored"),
name);
}
expansion. */
void
-s_mexit (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_mexit (int ignore ATTRIBUTE_UNUSED)
{
- cond_exit_macro (macro_nest);
- buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+ if (macro_nest)
+ {
+ cond_exit_macro (macro_nest);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+ }
+ else
+ as_warn (_("ignoring macro exit outside a macro definition."));
}
/* Switch in and out of MRI mode. */
void
-s_mri (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_mri (int ignore ATTRIBUTE_UNUSED)
{
- int on, old_flag;
+ int on;
+#ifdef MRI_MODE_CHANGE
+ int old_flag;
+#endif
on = get_absolute_expression ();
+#ifdef MRI_MODE_CHANGE
old_flag = flag_mri;
+#endif
if (on != 0)
{
flag_mri = 1;
else
{
flag_mri = 0;
+#ifdef TC_M68K
flag_m68k_mri = 0;
+#endif
macro_mri_mode (0);
}
/* Handle changing the location counter. */
static void
-do_org (segment, exp, fill)
- segT segment;
- expressionS *exp;
- int fill;
+do_org (segT segment, expressionS *exp, int fill)
{
- if (segment != now_seg && segment != absolute_section)
- as_bad (_("invalid segment \"%s\"; segment \"%s\" assumed"),
- segment_name (segment), segment_name (now_seg));
+ if (segment != now_seg
+ && segment != absolute_section
+ && segment != expr_section)
+ as_bad (_("invalid segment \"%s\""), segment_name (segment));
if (now_seg == absolute_section)
{
else
{
char *p;
+ symbolS *sym = exp->X_add_symbol;
+ offsetT off = exp->X_add_number * OCTETS_PER_BYTE;
+
+ if (exp->X_op != O_constant && exp->X_op != O_symbol)
+ {
+ /* Handle complex expressions. */
+ sym = make_expr_symbol (exp);
+ off = 0;
+ }
- p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp->X_add_symbol,
- exp->X_add_number * OCTETS_PER_BYTE, (char *) NULL);
+ p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0);
*p = fill;
}
}
-void
-s_org (ignore)
- int ignore ATTRIBUTE_UNUSED;
+void
+s_org (int ignore ATTRIBUTE_UNUSED)
{
- register segT segment;
+ segT segment;
expressionS exp;
- register long temp_fill;
+ long temp_fill;
#ifdef md_flush_pending_output
md_flush_pending_output ();
do_org (segment, &exp, temp_fill);
demand_empty_rest_of_line ();
-} /* s_org() */
+}
/* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be
called by the obj-format routine which handles section changing
when in MRI mode. It will create a new section, and return it. It
will set *TYPE to the section type: one of 'C' (code), 'D' (data),
- 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the
- flags will be set in the section. */
+ 'M' (mixed), or 'R' (romable). The flags will be set in the section. */
void
-s_mri_sect (type)
- char *type ATTRIBUTE_UNUSED;
+s_mri_sect (char *type ATTRIBUTE_UNUSED)
{
#ifdef TC_M68K
segT seg;
SKIP_WHITESPACE ();
-
+
name = input_line_pointer;
- if (! isdigit ((unsigned char) *name))
+ if (!ISDIGIT (*name))
c = get_symbol_end ();
else
{
{
++input_line_pointer;
}
- while (isdigit ((unsigned char) *input_line_pointer));
+ while (ISDIGIT (*input_line_pointer));
+
c = *input_line_pointer;
*input_line_pointer = '\0';
}
if (*input_line_pointer == ',')
{
c = *++input_line_pointer;
- c = toupper ((unsigned char) c);
+ c = TOUPPER (c);
if (c == 'C' || c == 'D' || c == 'M' || c == 'R')
*type = c;
else
as_bad (_("unrecognized section type"));
++input_line_pointer;
-#ifdef BFD_ASSEMBLER
{
flagword flags;
flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM;
if (flags != SEC_NO_FLAGS)
{
- if (! bfd_set_section_flags (stdoutput, seg, flags))
+ if (!bfd_set_section_flags (stdoutput, seg, flags))
as_warn (_("error setting flags for \"%s\": %s"),
bfd_section_name (stdoutput, seg),
bfd_errmsg (bfd_get_error ()));
}
}
-#endif
}
/* Ignore the HP type. */
}
}
- demand_empty_rest_of_line ();
+ demand_empty_rest_of_line ();
#else /* ! TC_I960 */
/* The MRI assembler seems to use different forms of .sect for
/* Handle the .print pseudo-op. */
void
-s_print (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_print (int ignore ATTRIBUTE_UNUSED)
{
char *s;
int len;
s = demand_copy_C_string (&len);
- printf ("%s\n", s);
+ if (s != NULL)
+ printf ("%s\n", s);
demand_empty_rest_of_line ();
}
/* Handle the .purgem pseudo-op. */
void
-s_purgem (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_purgem (int ignore ATTRIBUTE_UNUSED)
{
if (is_it_end_of_statement ())
{
demand_empty_rest_of_line ();
}
+/* Handle the .endm/.endr pseudo-ops. */
+
+static void
+s_bad_end (int endr)
+{
+ as_warn (_(".end%c encountered without preceding %s"),
+ endr ? 'r' : 'm',
+ endr ? ".rept, .irp, or .irpc" : ".macro");
+ demand_empty_rest_of_line ();
+}
+
/* Handle the .rept pseudo-op. */
void
-s_rept (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_rept (int ignore ATTRIBUTE_UNUSED)
{
int count;
- sb one;
- sb many;
count = get_absolute_expression ();
+ do_repeat (count, "REPT", "ENDR");
+}
+
+/* This function provides a generic repeat block implementation. It allows
+ different directives to be used as the start/end keys. */
+
+void
+do_repeat (int count, const char *start, const char *end)
+{
+ sb one;
+ sb many;
+
sb_new (&one);
- if (! buffer_and_nest ("REPT", "ENDR", &one, get_line_sb))
+ if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb))
{
- as_bad (_("rept without endr"));
+ as_bad (_("%s without %s"), start, end);
return;
}
- sb_new (&many);
+ sb_build (&many, count * one.len);
while (count-- > 0)
sb_add_sb (&many, &one);
sb_kill (&one);
- input_scrub_include_sb (&many, input_line_pointer);
+ input_scrub_include_sb (&many, input_line_pointer, 1);
sb_kill (&many);
buffer_limit = input_scrub_next_buffer (&input_line_pointer);
}
-/* Handle the .equ, .equiv and .set directives. If EQUIV is 1, then
- this is .equiv, and it is an error if the symbol is already
- defined. */
+/* Like do_repeat except that any text matching EXPANDER in the
+ block is replaced by the itteration count. */
-void
-s_set (equiv)
- int equiv;
+void
+do_repeat_with_expander (int count,
+ const char * start,
+ const char * end,
+ const char * expander)
{
- register char *name;
- register char delim;
- register char *end_name;
- register symbolS *symbolP;
-
- /*
- * Especial apologies for the random logic:
- * this just grew, and could be parsed much more simply!
- * Dean in haste.
- */
- name = input_line_pointer;
- delim = get_symbol_end ();
- end_name = input_line_pointer;
- *end_name = delim;
- SKIP_WHITESPACE ();
+ sb one;
+ sb many;
- if (*input_line_pointer != ',')
+ sb_new (&one);
+ if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb))
{
- *end_name = 0;
- as_bad (_("Expected comma after name \"%s\""), name);
- *end_name = delim;
- ignore_rest_of_line ();
+ as_bad (_("%s without %s"), start, end);
return;
}
- input_line_pointer++;
- *end_name = 0;
+ sb_new (&many);
+
+ if (expander != NULL && strstr (one.ptr, expander) != NULL)
+ {
+ while (count -- > 0)
+ {
+ int len;
+ char * sub;
+ sb processed;
+
+ sb_build (& processed, one.len);
+ sb_add_sb (& processed, & one);
+ sub = strstr (processed.ptr, expander);
+ len = sprintf (sub, "%d", count);
+ gas_assert (len < 8);
+ strcpy (sub + len, sub + 8);
+ processed.len -= (8 - len);
+ sb_add_sb (& many, & processed);
+ sb_kill (& processed);
+ }
+ }
+ else
+ while (count-- > 0)
+ sb_add_sb (&many, &one);
+
+ sb_kill (&one);
+
+ input_scrub_include_sb (&many, input_line_pointer, 1);
+ sb_kill (&many);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+}
+
+/* Skip to end of current repeat loop; EXTRA indicates how many additional
+ input buffers to skip. Assumes that conditionals preceding the loop end
+ are properly nested.
+
+ This function makes it easier to implement a premature "break" out of the
+ loop. The EXTRA arg accounts for other buffers we might have inserted,
+ such as line substitutions. */
+
+void
+end_repeat (int extra)
+{
+ cond_exit_macro (macro_nest);
+ while (extra-- >= 0)
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+}
+
+static void
+assign_symbol (char *name, int mode)
+{
+ symbolS *symbolP;
if (name[0] == '.' && name[1] == '\0')
{
- /* Turn '. = mumble' into a .org mumble */
- register segT segment;
+ /* Turn '. = mumble' into a .org mumble. */
+ segT segment;
expressionS exp;
segment = get_known_segmented_expression (&exp);
if (!need_pass_2)
do_org (segment, &exp, 0);
- *end_name = delim;
return;
}
if ((symbolP = symbol_find (name)) == NULL
&& (symbolP = md_undefined_symbol (name)) == NULL)
{
+ symbolP = symbol_find_or_make (name);
#ifndef NO_LISTING
/* When doing symbol listings, play games with dummy fragments living
outside the normal fragment chain to record the file and line info
- for this symbol. */
+ for this symbol. */
if (listing & LISTING_SYMBOLS)
{
extern struct list_info_struct *listing_tail;
- fragS *dummy_frag = (fragS *) xmalloc (sizeof(fragS));
- memset (dummy_frag, 0, sizeof(fragS));
- dummy_frag->fr_type = rs_fill;
+ fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS));
dummy_frag->line = listing_tail;
- symbolP = symbol_new (name, undefined_section, 0, dummy_frag);
dummy_frag->fr_symbol = symbolP;
+ symbol_set_frag (symbolP, dummy_frag);
}
- else
#endif
- symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag);
-
-#ifdef OBJ_COFF
- /* "set" symbols are local unless otherwise specified. */
+#if defined (OBJ_COFF) && !defined (TE_PE)
+ /* "set" symbols are local unless otherwise specified. */
SF_SET_LOCAL (symbolP);
-#endif /* OBJ_COFF */
+#endif
+ }
+
+ if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
+ {
+ if ((mode != 0 || !S_IS_VOLATILE (symbolP))
+ && !S_CAN_BE_REDEFINED (symbolP))
+ {
+ as_bad (_("symbol `%s' is already defined"), name);
+ symbolP = symbol_clone (symbolP, 0);
+ }
+ /* If the symbol is volatile, copy the symbol and replace the
+ original with the copy, so that previous uses of the symbol will
+ retain the value of the symbol at the point of use. */
+ else if (S_IS_VOLATILE (symbolP))
+ symbolP = symbol_clone (symbolP, 1);
+ }
+
+ if (mode == 0)
+ S_SET_VOLATILE (symbolP);
+ else if (mode < 0)
+ S_SET_FORWARD_REF (symbolP);
- } /* make a new symbol */
+ pseudo_set (symbolP);
+}
- symbol_table_insert (symbolP);
+/* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1,
+ then this is .equiv, and it is an error if the symbol is already
+ defined. If EQUIV is -1, the symbol additionally is a forward
+ reference. */
- *end_name = delim;
+void
+s_set (int equiv)
+{
+ char *name;
- if (equiv
- && S_IS_DEFINED (symbolP)
- && S_GET_SEGMENT (symbolP) != reg_section)
- as_bad (_("symbol `%s' already defined"), S_GET_NAME (symbolP));
+ /* Especial apologies for the random logic:
+ this just grew, and could be parsed much more simply!
+ Dean in haste. */
+ if ((name = read_symbol_name ()) == NULL)
+ return;
- pseudo_set (symbolP);
+ if (*input_line_pointer != ',')
+ {
+ as_bad (_("expected comma after \"%s\""), name);
+ ignore_rest_of_line ();
+ free (name);
+ return;
+ }
+
+ input_line_pointer++;
+ assign_symbol (name, equiv);
demand_empty_rest_of_line ();
-} /* s_set() */
+ free (name);
+}
-void
-s_space (mult)
- int mult;
+void
+s_space (int mult)
{
expressionS exp;
expressionS val;
char *p = 0;
char *stop = NULL;
- char stopc;
+ char stopc = 0;
int bytes;
#ifdef md_flush_pending_output
md_flush_pending_output ();
#endif
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
if (flag_mri)
stop = mri_comment_field (&stopc);
}
else if (mri_common_symbol != NULL)
{
- valueT val;
+ valueT mri_val;
- val = S_GET_VALUE (mri_common_symbol);
- if ((val & 1) != 0)
+ mri_val = S_GET_VALUE (mri_common_symbol);
+ if ((mri_val & 1) != 0)
{
- S_SET_VALUE (mri_common_symbol, val + 1);
+ S_SET_VALUE (mri_common_symbol, mri_val + 1);
if (line_label != NULL)
{
expressionS *symexp;
|| val.X_add_number > 0xff
|| (mult != 0 && mult != 1 && val.X_add_number != 0))
{
+ resolve_expression (&exp);
if (exp.X_op != O_constant)
- as_bad (_("Unsupported variable size or fill value"));
+ as_bad (_("unsupported variable size or fill value"));
else
{
offsetT i;
}
else
{
+ if (now_seg == absolute_section || mri_common_symbol != NULL)
+ resolve_expression (&exp);
+
if (exp.X_op == O_constant)
{
- long repeat;
+ offsetT repeat;
repeat = exp.X_add_number;
if (mult)
bytes = repeat;
if (repeat <= 0)
{
- if (! flag_mri)
+ if (!flag_mri)
as_warn (_(".space repeat count is zero, ignored"));
else if (repeat < 0)
as_warn (_(".space repeat count is negative, ignored"));
as_bad (_("space allocation too complex in absolute section"));
subseg_set (text_section, 0);
}
+
if (mri_common_symbol != NULL)
{
as_bad (_("space allocation too complex in common section"));
mri_common_symbol = NULL;
}
+
if (!need_pass_2)
p = frag_var (rs_space, 1, 1, (relax_substateT) 0,
make_expr_symbol (&exp), (offsetT) 0, (char *) 0);
friends. */
void
-s_float_space (float_type)
- int float_type;
+s_float_space (int float_type)
{
offsetT count;
int flen;
char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
char *stop = NULL;
- char stopc;
+ char stopc = 0;
+
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
if (flag_mri)
stop = mri_comment_field (&stopc);
/* Skip any 0{letter} that may be present. Don't even check if the
* letter is legal. */
if (input_line_pointer[0] == '0'
- && isalpha ((unsigned char) input_line_pointer[1]))
+ && ISALPHA (input_line_pointer[1]))
input_line_pointer += 2;
/* Accept :xxxx, where the x's are hex digits, for a floating point
err = md_atof (float_type, temp, &flen);
know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
- know (flen > 0);
+ know (err != NULL || flen > 0);
if (err)
{
- as_bad (_("Bad floating literal: %s"), err);
+ as_bad (_("bad floating literal: %s"), err);
ignore_rest_of_line ();
if (flag_mri)
mri_comment_end (stop, stopc);
/* Handle the .struct pseudo-op, as found in MIPS assemblers. */
void
-s_struct (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_struct (int ignore ATTRIBUTE_UNUSED)
{
char *stop = NULL;
- char stopc;
+ char stopc = 0;
if (flag_mri)
stop = mri_comment_field (&stopc);
abs_section_offset = get_absolute_expression ();
+#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
+ /* The ELF backend needs to know that we are changing sections, so
+ that .previous works correctly. */
+ if (IS_ELF)
+ obj_elf_section_change_hook ();
+#endif
subseg_set (absolute_section, 0);
demand_empty_rest_of_line ();
if (flag_mri)
}
void
-s_text (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_text (int ignore ATTRIBUTE_UNUSED)
{
- register int temp;
+ int temp;
temp = get_absolute_expression ();
subseg_set (text_section, (subsegT) temp);
demand_empty_rest_of_line ();
-#ifdef OBJ_VMS
- const_flag &= ~IN_DEFAULT_SECTION;
-#endif
-} /* s_text() */
-\f
-
-void
-demand_empty_rest_of_line ()
-{
- SKIP_WHITESPACE ();
- if (is_end_of_line[(unsigned char) *input_line_pointer])
- {
- input_line_pointer++;
- }
- else
- {
- ignore_rest_of_line ();
- }
- /* Return having already swallowed end-of-line. */
-} /* Return pointing just after end-of-line. */
+}
+/* .weakref x, y sets x as an alias to y that, as long as y is not
+ referenced directly, will cause y to become a weak symbol. */
void
-ignore_rest_of_line () /* For suspect lines: gives warning. */
+s_weakref (int ignore ATTRIBUTE_UNUSED)
{
- if (!is_end_of_line[(unsigned char) *input_line_pointer])
+ char *name;
+ symbolS *symbolP;
+ symbolS *symbolP2;
+ expressionS exp;
+
+ if ((name = read_symbol_name ()) == NULL)
+ return;
+
+ symbolP = symbol_find_or_make (name);
+
+ if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP))
{
- if (isprint ((unsigned char) *input_line_pointer))
- as_bad (_("Rest of line ignored. First ignored character is `%c'."),
- *input_line_pointer);
- else
- as_bad (_("Rest of line ignored. First ignored character valued 0x%x."),
- *input_line_pointer);
- while (input_line_pointer < buffer_limit
- && !is_end_of_line[(unsigned char) *input_line_pointer])
+ if (!S_IS_VOLATILE (symbolP))
{
- input_line_pointer++;
+ as_bad (_("symbol `%s' is already defined"), name);
+ goto err_out;
}
+ symbolP = symbol_clone (symbolP, 1);
+ S_CLEAR_VOLATILE (symbolP);
}
- input_line_pointer++; /* Return pointing just after end-of-line. */
- know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
-}
-void
-discard_rest_of_line ()
-{
- while (input_line_pointer < buffer_limit
- && !is_end_of_line[(unsigned char) *input_line_pointer])
+ SKIP_WHITESPACE ();
+
+ if (*input_line_pointer != ',')
{
- input_line_pointer++;
+ as_bad (_("expected comma after \"%s\""), name);
+ goto err_out;
}
- input_line_pointer++; /* Return pointing just after end-of-line. */
- know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
-}
-/*
- * pseudo_set()
- *
- * In: Pointer to a symbol.
- * Input_line_pointer->expression.
- *
- * Out: Input_line_pointer->just after any whitespace after expression.
- * Tried to set symbol to value of expression.
- * Will change symbols type, value, and frag;
- */
-void
-pseudo_set (symbolP)
- symbolS *symbolP;
-{
- expressionS exp;
-#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
- int ext;
-#endif /* OBJ_AOUT or OBJ_BOUT */
+ input_line_pointer++;
- know (symbolP); /* NULL pointer is logic error. */
-#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
- ext = S_IS_EXTERNAL (symbolP);
-#endif /* OBJ_AOUT or OBJ_BOUT */
+ SKIP_WHITESPACE ();
+ free (name);
- (void) expression (&exp);
+ if ((name = read_symbol_name ()) == NULL)
+ return;
- if (exp.X_op == O_illegal)
- as_bad (_("illegal expression; zero assumed"));
- else if (exp.X_op == O_absent)
- as_bad (_("missing expression; zero assumed"));
- else if (exp.X_op == O_big)
+ if ((symbolP2 = symbol_find_noref (name, 1)) == NULL
+ && (symbolP2 = md_undefined_symbol (name)) == NULL)
{
- if (exp.X_add_number > 0)
- as_bad (_("bignum invalid; zero assumed"));
- else
- as_bad (_("floating point number invalid; zero assumed"));
+ symbolP2 = symbol_find_or_make (name);
+ S_SET_WEAKREFD (symbolP2);
}
- else if (exp.X_op == O_subtract
- && (S_GET_SEGMENT (exp.X_add_symbol)
- == S_GET_SEGMENT (exp.X_op_symbol))
- && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol))
- && (symbol_get_frag (exp.X_add_symbol)
- == symbol_get_frag (exp.X_op_symbol)))
+ else
{
- exp.X_op = O_constant;
- exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol)
- - S_GET_VALUE (exp.X_op_symbol));
- }
+ symbolS *symp = symbolP2;
- switch (exp.X_op)
- {
- case O_illegal:
- case O_absent:
- case O_big:
- exp.X_add_number = 0;
+ while (S_IS_WEAKREFR (symp) && symp != symbolP)
+ {
+ expressionS *expP = symbol_get_value_expression (symp);
+
+ gas_assert (expP->X_op == O_symbol
+ && expP->X_add_number == 0);
+ symp = expP->X_add_symbol;
+ }
+ if (symp == symbolP)
+ {
+ char *loop;
+
+ loop = concat (S_GET_NAME (symbolP),
+ " => ", S_GET_NAME (symbolP2), (const char *) NULL);
+
+ symp = symbolP2;
+ while (symp != symbolP)
+ {
+ char *old_loop = loop;
+
+ symp = symbol_get_value_expression (symp)->X_add_symbol;
+ loop = concat (loop, " => ", S_GET_NAME (symp),
+ (const char *) NULL);
+ free (old_loop);
+ }
+
+ as_bad (_("%s: would close weakref loop: %s"),
+ S_GET_NAME (symbolP), loop);
+
+ free (loop);
+ free (name);
+ ignore_rest_of_line ();
+ return;
+ }
+
+ /* Short-circuiting instead of just checking here might speed
+ things up a tiny little bit, but loop error messages would
+ miss intermediate links. */
+ /* symbolP2 = symp; */
+ }
+
+ memset (&exp, 0, sizeof (exp));
+ exp.X_op = O_symbol;
+ exp.X_add_symbol = symbolP2;
+
+ S_SET_SEGMENT (symbolP, undefined_section);
+ symbol_set_value_expression (symbolP, &exp);
+ symbol_set_frag (symbolP, &zero_address_frag);
+ S_SET_WEAKREFR (symbolP);
+
+ demand_empty_rest_of_line ();
+ free (name);
+ return;
+
+ err_out:
+ ignore_rest_of_line ();
+ free (name);
+ return;
+}
+\f
+
+/* Verify that we are at the end of a line. If not, issue an error and
+ skip to EOL. */
+
+void
+demand_empty_rest_of_line (void)
+{
+ SKIP_WHITESPACE ();
+ if (is_end_of_line[(unsigned char) *input_line_pointer])
+ input_line_pointer++;
+ else
+ {
+ if (ISPRINT (*input_line_pointer))
+ as_bad (_("junk at end of line, first unrecognized character is `%c'"),
+ *input_line_pointer);
+ else
+ as_bad (_("junk at end of line, first unrecognized character valued 0x%x"),
+ *input_line_pointer);
+ ignore_rest_of_line ();
+ }
+
+ /* Return pointing just after end-of-line. */
+ know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
+}
+
+/* Silently advance to the end of line. Use this after already having
+ issued an error about something bad. */
+
+void
+ignore_rest_of_line (void)
+{
+ while (input_line_pointer < buffer_limit
+ && !is_end_of_line[(unsigned char) *input_line_pointer])
+ input_line_pointer++;
+
+ input_line_pointer++;
+
+ /* Return pointing just after end-of-line. */
+ know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
+}
+
+/* Sets frag for given symbol to zero_address_frag, except when the
+ symbol frag is already set to a dummy listing frag. */
+
+static void
+set_zero_frag (symbolS *symbolP)
+{
+ if (symbol_get_frag (symbolP)->fr_type != rs_dummy)
+ symbol_set_frag (symbolP, &zero_address_frag);
+}
+
+/* In: Pointer to a symbol.
+ Input_line_pointer->expression.
+
+ Out: Input_line_pointer->just after any whitespace after expression.
+ Tried to set symbol to value of expression.
+ Will change symbols type, value, and frag; */
+
+void
+pseudo_set (symbolS *symbolP)
+{
+ expressionS exp;
+ segT seg;
+
+ know (symbolP); /* NULL pointer is logic error. */
+
+ if (!S_IS_FORWARD_REF (symbolP))
+ (void) expression (&exp);
+ else
+ (void) deferred_expression (&exp);
+
+ if (exp.X_op == O_illegal)
+ as_bad (_("illegal expression"));
+ else if (exp.X_op == O_absent)
+ as_bad (_("missing expression"));
+ else if (exp.X_op == O_big)
+ {
+ if (exp.X_add_number > 0)
+ as_bad (_("bignum invalid"));
+ else
+ as_bad (_("floating point number invalid"));
+ }
+ else if (exp.X_op == O_subtract
+ && !S_IS_FORWARD_REF (symbolP)
+ && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol))
+ && (symbol_get_frag (exp.X_add_symbol)
+ == symbol_get_frag (exp.X_op_symbol)))
+ {
+ exp.X_op = O_constant;
+ exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol)
+ - S_GET_VALUE (exp.X_op_symbol));
+ }
+
+ if (symbol_section_p (symbolP))
+ {
+ as_bad ("attempt to set value of section symbol");
+ return;
+ }
+
+ switch (exp.X_op)
+ {
+ case O_illegal:
+ case O_absent:
+ case O_big:
+ exp.X_add_number = 0;
/* Fall through. */
case O_constant:
S_SET_SEGMENT (symbolP, absolute_section);
-#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
- if (ext)
- S_SET_EXTERNAL (symbolP);
- else
- S_CLEAR_EXTERNAL (symbolP);
-#endif /* OBJ_AOUT or OBJ_BOUT */
S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
- if (exp.X_op != O_constant)
- symbol_set_frag (symbolP, &zero_address_frag);
+ set_zero_frag (symbolP);
break;
case O_register:
+#ifndef TC_GLOBAL_REGISTER_SYMBOL_OK
+ if (S_IS_EXTERNAL (symbolP))
+ {
+ as_bad ("can't equate global symbol `%s' with register name",
+ S_GET_NAME (symbolP));
+ return;
+ }
+#endif
S_SET_SEGMENT (symbolP, reg_section);
S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
- symbol_set_frag (symbolP, &zero_address_frag);
+ set_zero_frag (symbolP);
+ symbol_get_value_expression (symbolP)->X_op = O_register;
break;
case O_symbol:
- if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section
- || exp.X_add_number != 0)
- symbol_set_value_expression (symbolP, &exp);
- else if (symbol_section_p (symbolP))
- as_bad ("invalid attempt to set value of section symbol");
- else
+ seg = S_GET_SEGMENT (exp.X_add_symbol);
+ /* For x=undef+const, create an expression symbol.
+ For x=x+const, just update x except when x is an undefined symbol
+ For x=defined+const, evaluate x. */
+ if (symbolP == exp.X_add_symbol
+ && (seg != undefined_section
+ || !symbol_constant_p (symbolP)))
+ {
+ *symbol_X_add_number (symbolP) += exp.X_add_number;
+ break;
+ }
+ else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section)
{
symbolS *s = exp.X_add_symbol;
- S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s));
-#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
- if (ext)
- S_SET_EXTERNAL (symbolP);
- else
- S_CLEAR_EXTERNAL (symbolP);
-#endif /* OBJ_AOUT or OBJ_BOUT */
- S_SET_VALUE (symbolP,
- exp.X_add_number + S_GET_VALUE (s));
+ if (S_IS_COMMON (s))
+ as_bad (_("`%s' can't be equated to common symbol '%s'"),
+ S_GET_NAME (symbolP), S_GET_NAME (s));
+
+ S_SET_SEGMENT (symbolP, seg);
+ S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s));
symbol_set_frag (symbolP, symbol_get_frag (s));
copy_symbol_attributes (symbolP, s);
+ break;
}
+ S_SET_SEGMENT (symbolP, undefined_section);
+ symbol_set_value_expression (symbolP, &exp);
+ copy_symbol_attributes (symbolP, exp.X_add_symbol);
+ set_zero_frag (symbolP);
break;
default:
- /* The value is some complex expression.
- FIXME: Should we set the segment to anything? */
+ /* The value is some complex expression. */
+ S_SET_SEGMENT (symbolP, expr_section);
symbol_set_value_expression (symbolP, &exp);
+ set_zero_frag (symbolP);
break;
}
}
\f
-/*
- * cons()
- *
- * CONStruct more frag of .bytes, or .words etc.
- * Should need_pass_2 be 1 then emit no frag(s).
- * This understands EXPRESSIONS.
- *
- * Bug (?)
- *
- * This has a split personality. We use expression() to read the
- * value. We can detect if the value won't fit in a byte or word.
- * But we can't detect if expression() discarded significant digits
- * in the case of a long. Not worth the crocks required to fix it.
- */
+/* cons()
+
+ CONStruct more frag of .bytes, or .words etc.
+ Should need_pass_2 be 1 then emit no frag(s).
+ This understands EXPRESSIONS.
+
+ Bug (?)
+
+ This has a split personality. We use expression() to read the
+ value. We can detect if the value won't fit in a byte or word.
+ But we can't detect if expression() discarded significant digits
+ in the case of a long. Not worth the crocks required to fix it. */
/* Select a parser for cons expressions. */
are defined, which is the normal case, then only simple expressions
are permitted. */
+#ifdef TC_M68K
static void
-parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes));
+parse_mri_cons (expressionS *exp, unsigned int nbytes);
+#endif
#ifndef TC_PARSE_CONS_EXPRESSION
#ifdef BITFIELD_CONS_EXPRESSIONS
-#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES)
-static void
-parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes));
+#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
+ (parse_bitfield_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE)
+static void
+parse_bitfield_cons (expressionS *exp, unsigned int nbytes);
#endif
#ifdef REPEAT_CONS_EXPRESSIONS
-#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES)
+#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
+ (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE)
static void
-parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes));
+parse_repeat_cons (expressionS *exp, unsigned int nbytes);
#endif
/* If we haven't gotten one yet, just call expression. */
#ifndef TC_PARSE_CONS_EXPRESSION
-#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP)
+#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
+ (expression (EXP), TC_PARSE_CONS_RETURN_NONE)
#endif
#endif
-/* worker to do .byte etc statements */
-/* clobbers input_line_pointer, checks */
-/* end-of-line. */
-static void
-cons_worker (nbytes, rva)
- register int nbytes; /* 1=.byte, 2=.word, 4=.long */
- int rva;
+void
+do_parse_cons_expression (expressionS *exp,
+ int nbytes ATTRIBUTE_UNUSED)
+{
+ (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes);
+}
+
+
+/* Worker to do .byte etc statements.
+ Clobbers input_line_pointer and checks end-of-line. */
+
+static void
+cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */
+ int rva)
{
int c;
expressionS exp;
char *stop = NULL;
- char stopc;
+ char stopc = 0;
#ifdef md_flush_pending_output
md_flush_pending_output ();
return;
}
+#ifdef TC_ADDRESS_BYTES
+ if (nbytes == 0)
+ nbytes = TC_ADDRESS_BYTES ();
+#endif
+
#ifdef md_cons_align
md_cons_align (nbytes);
#endif
c = 0;
do
{
+ TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE;
+#ifdef TC_CONS_FIX_CHECK
+ fixS **cur_fix = &frchain_now->fix_tail;
+
+ if (*cur_fix != NULL)
+ cur_fix = &(*cur_fix)->fx_next;
+#endif
+
+#ifdef TC_M68K
if (flag_m68k_mri)
parse_mri_cons (&exp, (unsigned int) nbytes);
else
- TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes);
+#endif
+ {
+ if (*input_line_pointer == '"')
+ {
+ as_bad (_("unexpected `\"' in expression"));
+ ignore_rest_of_line ();
+ return;
+ }
+ ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes);
+ }
if (rva)
{
else
as_fatal (_("rva without symbol"));
}
- emit_expr (&exp, (unsigned int) nbytes);
+ emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret);
+#ifdef TC_CONS_FIX_CHECK
+ TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix);
+#endif
++c;
}
while (*input_line_pointer++ == ',');
if (flag_mri && nbytes == 1 && (c & 1) != 0)
mri_pending_align = 1;
- input_line_pointer--; /* Put terminator back into stream. */
+ input_line_pointer--; /* Put terminator back into stream. */
demand_empty_rest_of_line ();
mri_comment_end (stop, stopc);
}
-
void
-cons (size)
- int size;
+cons (int size)
{
cons_worker (size, 0);
}
-void
-s_rva (size)
- int size;
+void
+s_rva (int size)
{
cons_worker (size, 1);
}
+/* .reloc offset, reloc_name, symbol+addend. */
+
+void
+s_reloc (int ignore ATTRIBUTE_UNUSED)
+{
+ char *stop = NULL;
+ char stopc = 0;
+ expressionS exp;
+ char *r_name;
+ int c;
+ struct reloc_list *reloc;
+
+ reloc = (struct reloc_list *) xmalloc (sizeof (*reloc));
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+
+ expression (&exp);
+ switch (exp.X_op)
+ {
+ case O_illegal:
+ case O_absent:
+ case O_big:
+ case O_register:
+ as_bad (_("missing or bad offset expression"));
+ goto err_out;
+ case O_constant:
+ exp.X_add_symbol = section_symbol (now_seg);
+ exp.X_op = O_symbol;
+ /* Fall thru */
+ case O_symbol:
+ if (exp.X_add_number == 0)
+ {
+ reloc->u.a.offset_sym = exp.X_add_symbol;
+ break;
+ }
+ /* Fall thru */
+ default:
+ reloc->u.a.offset_sym = make_expr_symbol (&exp);
+ break;
+ }
+
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer != ',')
+ {
+ as_bad (_("missing reloc type"));
+ goto err_out;
+ }
+
+ ++input_line_pointer;
+ SKIP_WHITESPACE ();
+ r_name = input_line_pointer;
+ c = get_symbol_end ();
+ reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name);
+ *input_line_pointer = c;
+ if (reloc->u.a.howto == NULL)
+ {
+ as_bad (_("unrecognized reloc type"));
+ goto err_out;
+ }
+
+ exp.X_op = O_absent;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == ',')
+ {
+ ++input_line_pointer;
+ expression (&exp);
+ }
+ switch (exp.X_op)
+ {
+ case O_illegal:
+ case O_big:
+ case O_register:
+ as_bad (_("bad reloc expression"));
+ err_out:
+ ignore_rest_of_line ();
+ free (reloc);
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+ return;
+ case O_absent:
+ reloc->u.a.sym = NULL;
+ reloc->u.a.addend = 0;
+ break;
+ case O_constant:
+ reloc->u.a.sym = NULL;
+ reloc->u.a.addend = exp.X_add_number;
+ break;
+ case O_symbol:
+ reloc->u.a.sym = exp.X_add_symbol;
+ reloc->u.a.addend = exp.X_add_number;
+ break;
+ default:
+ reloc->u.a.sym = make_expr_symbol (&exp);
+ reloc->u.a.addend = 0;
+ break;
+ }
+
+ as_where (&reloc->file, &reloc->line);
+ reloc->next = reloc_list;
+ reloc_list = reloc;
+
+ demand_empty_rest_of_line ();
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+}
+
/* Put the contents of expression EXP into the object file using
NBYTES bytes. If need_pass_2 is 1, this does nothing. */
void
-emit_expr (exp, nbytes)
- expressionS *exp;
- unsigned int nbytes;
+emit_expr (expressionS *exp, unsigned int nbytes)
+{
+ emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE);
+}
+
+void
+emit_expr_with_reloc (expressionS *exp,
+ unsigned int nbytes,
+ TC_PARSE_CONS_RETURN_TYPE reloc)
{
operatorT op;
- register char *p;
+ char *p;
valueT extra_digit = 0;
/* Don't do anything if we are going to make another pass. */
if (need_pass_2)
return;
+ frag_grow (nbytes);
+ dot_value = frag_now_fix ();
+ dot_frag = frag_now;
+
#ifndef NO_LISTING
#ifdef OBJ_ELF
/* When gcc emits DWARF 1 debugging pseudo-ops, a line number will
{
unsigned long next;
- next = (((~ (generic_bignum[i] & LITTLENUM_MASK))
+ next = (((~(generic_bignum[i] & LITTLENUM_MASK))
& LITTLENUM_MASK)
+ carry);
generic_bignum[i] = next & LITTLENUM_MASK;
}
else if (op == O_big && exp->X_add_number <= 0)
{
- as_bad (_("floating point number invalid; zero assumed"));
+ as_bad (_("floating point number invalid"));
exp->X_add_number = 0;
op = O_constant;
}
p = frag_more ((int) nbytes);
+ if (reloc != TC_PARSE_CONS_RETURN_NONE)
+ {
+ emit_expr_fix (exp, nbytes, frag_now, p, reloc);
+ return;
+ }
+
#ifndef WORKING_DOT_WORD
/* If we have the difference of two symbols in a word, save it on
the broken_words list. See the code in write.c. */
x->sub = exp->X_op_symbol;
x->addnum = exp->X_add_number;
x->added = 0;
+ x->use_jump = 0;
new_broken_words++;
return;
}
pass to md_number_to_chars, handle it as a bignum. */
if (op == O_constant && nbytes > sizeof (valueT))
{
- valueT val;
- int gencnt;
-
- if (! exp->X_unsigned && exp->X_add_number < 0)
- extra_digit = (valueT) -1;
- val = (valueT) exp->X_add_number;
- gencnt = 0;
- do
- {
- generic_bignum[gencnt] = val & LITTLENUM_MASK;
- val >>= LITTLENUM_NUMBER_OF_BITS;
- ++gencnt;
- }
- while (val != 0);
- op = exp->X_op = O_big;
- exp->X_add_number = gencnt;
+ extra_digit = exp->X_unsigned ? 0 : -1;
+ convert_to_bignum (exp, !exp->X_unsigned);
+ op = O_big;
}
if (op == O_constant)
{
- register valueT get;
- register valueT use;
- register valueT mask;
+ valueT get;
+ valueT use;
+ valueT mask;
valueT hibit;
- register valueT unmask;
+ valueT unmask;
/* JF << of >= number of bits in the object is undefined. In
- particular SPARC (Sun 4) has problems */
+ particular SPARC (Sun 4) has problems. */
if (nbytes >= sizeof (valueT))
{
mask = 0;
}
else
{
- /* Don't store these bits. */
+ /* Don't store these bits. */
mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes);
hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1);
}
- unmask = ~mask; /* Do store these bits. */
+ unmask = ~mask; /* Do store these bits. */
#ifdef NEVER
"Do this mod if you want every overflow check to assume SIGNED 2's complement data.";
- mask = ~(unmask >> 1); /* Includes sign bit now. */
+ mask = ~(unmask >> 1); /* Includes sign bit now. */
#endif
get = exp->X_add_number;
if ((get & mask) != 0
&& ((get & mask) != mask
|| (get & hibit) == 0))
- { /* Leading bits contain both 0s & 1s. */
- as_warn (_("Value 0x%lx truncated to 0x%lx."),
+ { /* Leading bits contain both 0s & 1s. */
+#if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG
+#ifndef __MSVCRT__
+ as_warn (_("value 0x%llx truncated to 0x%llx"),
+ (unsigned long long) get, (unsigned long long) use);
+#else
+ as_warn (_("value 0x%I64x truncated to 0x%I64x"),
+ (unsigned long long) get, (unsigned long long) use);
+#endif
+#else
+ as_warn (_("value 0x%lx truncated to 0x%lx"),
(unsigned long) get, (unsigned long) use);
+#endif
}
- /* put bytes in right order. */
+ /* Put bytes in right order. */
md_number_to_chars (p, use, (int) nbytes);
}
else if (op == O_big)
unsigned int size;
LITTLENUM_TYPE *nums;
- know (nbytes % CHARS_PER_LITTLENUM == 0);
-
size = exp->X_add_number * CHARS_PER_LITTLENUM;
if (nbytes < size)
{
- as_warn (_("Bignum truncated to %d bytes"), nbytes);
+ int i = nbytes / CHARS_PER_LITTLENUM;
+ if (i != 0)
+ {
+ LITTLENUM_TYPE sign = 0;
+ if ((generic_bignum[--i]
+ & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0)
+ sign = ~(LITTLENUM_TYPE) 0;
+ while (++i < exp->X_add_number)
+ if (generic_bignum[i] != sign)
+ break;
+ }
+ if (i < exp->X_add_number)
+ as_warn (_("bignum truncated to %d bytes"), nbytes);
size = nbytes;
}
+ if (nbytes == 1)
+ {
+ md_number_to_chars (p, (valueT) generic_bignum[0], 1);
+ return;
+ }
+ know (nbytes % CHARS_PER_LITTLENUM == 0);
+
if (target_big_endian)
{
while (nbytes > size)
}
nums = generic_bignum + size / CHARS_PER_LITTLENUM;
- while (size > 0)
+ while (size >= CHARS_PER_LITTLENUM)
{
--nums;
md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM);
else
{
nums = generic_bignum;
- while (size > 0)
+ while (size >= CHARS_PER_LITTLENUM)
{
md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM);
++nums;
nbytes -= CHARS_PER_LITTLENUM;
}
- while (nbytes > 0)
+ while (nbytes >= CHARS_PER_LITTLENUM)
{
md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM);
nbytes -= CHARS_PER_LITTLENUM;
}
}
else
- {
- memset (p, 0, nbytes);
+ emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE);
+}
- /* Now we need to generate a fixS to record the symbol value.
- This is easy for BFD. For other targets it can be more
- complex. For very complex cases (currently, the HPPA and
- NS32K), you can define TC_CONS_FIX_NEW to do whatever you
- want. For simpler cases, you can define TC_CONS_RELOC to be
- the name of the reloc code that should be stored in the fixS.
- If neither is defined, the code uses NO_RELOC if it is
- defined, and otherwise uses 0. */
+void
+emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p,
+ TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED)
+{
+ int offset = 0;
+ unsigned int size = nbytes;
+
+ memset (p, 0, size);
+
+ /* Generate a fixS to record the symbol value. */
-#ifdef BFD_ASSEMBLER
#ifdef TC_CONS_FIX_NEW
- TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp);
+ TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r);
#else
- {
- bfd_reloc_code_real_type r;
+ if (r != TC_PARSE_CONS_RETURN_NONE)
+ {
+ reloc_howto_type *reloc_howto;
- switch (nbytes)
- {
- case 1:
- r = BFD_RELOC_8;
- break;
- case 2:
- r = BFD_RELOC_16;
- break;
- case 4:
- r = BFD_RELOC_32;
- break;
- case 8:
- r = BFD_RELOC_64;
- break;
- default:
- as_bad (_("unsupported BFD relocation size %u"), nbytes);
- r = BFD_RELOC_32;
- break;
- }
- fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp,
- 0, r);
+ reloc_howto = bfd_reloc_type_lookup (stdoutput, r);
+ size = bfd_get_reloc_size (reloc_howto);
+
+ if (size > nbytes)
+ {
+ as_bad (_("%s relocations do not fit in %u bytes\n"),
+ reloc_howto->name, nbytes);
+ return;
+ }
+ else if (target_big_endian)
+ offset = nbytes - size;
+ }
+ else
+ switch (size)
+ {
+ case 1:
+ r = BFD_RELOC_8;
+ break;
+ case 2:
+ r = BFD_RELOC_16;
+ break;
+ case 3:
+ r = BFD_RELOC_24;
+ break;
+ case 4:
+ r = BFD_RELOC_32;
+ break;
+ case 8:
+ r = BFD_RELOC_64;
+ break;
+ default:
+ as_bad (_("unsupported BFD relocation size %u"), size);
+ return;
}
+ fix_new_exp (frag, p - frag->fr_literal + offset, size,
+ exp, 0, r);
#endif
-#else
-#ifdef TC_CONS_FIX_NEW
- TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp);
-#else
- /* Figure out which reloc number to use. Use TC_CONS_RELOC if
- it is defined, otherwise use NO_RELOC if it is defined,
- otherwise use 0. */
-#ifndef TC_CONS_RELOC
-#ifdef NO_RELOC
-#define TC_CONS_RELOC NO_RELOC
-#else
-#define TC_CONS_RELOC 0
-#endif
-#endif
- fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0,
- TC_CONS_RELOC);
-#endif /* TC_CONS_FIX_NEW */
-#endif /* BFD_ASSEMBLER */
- }
}
\f
#ifdef BITFIELD_CONS_EXPRESSIONS
them in words, longs, etc. and we'll pack them in target byte order
for you.
- The rules are: pack least significat bit first, if a field doesn't
+ The rules are: pack least significant bit first, if a field doesn't
entirely fit, put it in the next unit. Overflowing the bitfield is
explicitly *not* even a warning. The bitwidth should be considered
a "mask".
To use this function the tc-XXX.h file should define
BITFIELD_CONS_EXPRESSIONS. */
-static void
+static void
parse_bitfield_cons (exp, nbytes)
expressionS *exp;
unsigned int nbytes;
(void) expression (exp);
if (*input_line_pointer == ':')
- { /* bitfields */
+ {
+ /* Bitfields. */
long value = 0;
for (;;)
{
input_line_pointer = hold;
break;
- } /* next piece is not a bitfield */
+ } /* Next piece is not a bitfield. */
/* In the general case, we can't allow
full expressions with symbol
backends. I'm lazy. I'll take any
SEG_ABSOLUTE. I think that means that
you can use a previous .set or
- .equ type symbol. xoxorich. */
+ .equ type symbol. xoxorich. */
if (exp->X_op == O_absent)
{
as_warn (_("using a bit field width of zero"));
exp->X_add_number = 0;
exp->X_op = O_constant;
- } /* implied zero width bitfield */
+ } /* Implied zero width bitfield. */
if (exp->X_op != O_constant)
{
*input_line_pointer = ':';
demand_empty_rest_of_line ();
return;
- } /* too complex */
+ } /* Too complex. */
if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes))
{
as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"),
width, nbytes, (BITS_PER_CHAR * nbytes));
width = BITS_PER_CHAR * nbytes;
- } /* too big */
+ } /* Too big. */
if (width > bits_available)
{
input_line_pointer = hold;
exp->X_add_number = value;
break;
- } /* won't fit */
+ } /* Won't fit. */
- hold = ++input_line_pointer; /* skip ':' */
+ /* Skip ':'. */
+ hold = ++input_line_pointer;
(void) expression (exp);
if (exp->X_op != O_constant)
*input_line_pointer = cache;
demand_empty_rest_of_line ();
return;
- } /* too complex */
+ } /* Too complex. */
value |= ((~(-1 << width) & exp->X_add_number)
<< ((BITS_PER_CHAR * nbytes) - bits_available));
|| *input_line_pointer != ',')
{
break;
- } /* all the bitfields we're gonna get */
+ } /* All the bitfields we're gonna get. */
hold = ++input_line_pointer;
(void) expression (exp);
- } /* forever loop */
+ }
exp->X_add_number = value;
exp->X_op = O_constant;
exp->X_unsigned = 1;
- } /* if looks like a bitfield */
-} /* parse_bitfield_cons() */
+ exp->X_extrabit = 0;
+ }
+}
#endif /* BITFIELD_CONS_EXPRESSIONS */
\f
/* Handle an MRI style string expression. */
+#ifdef TC_M68K
static void
-parse_mri_cons (exp, nbytes)
- expressionS *exp;
- unsigned int nbytes;
+parse_mri_cons (expressionS *exp, unsigned int nbytes)
{
if (*input_line_pointer != '\''
&& (input_line_pointer[1] != '\''
|| (*input_line_pointer != 'A'
&& *input_line_pointer != 'E')))
- TC_PARSE_CONS_EXPRESSION (exp, nbytes);
+ (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes);
else
{
unsigned int scan;
result = (result << 8) | (*input_line_pointer++);
}
- /* Left justify */
+ /* Left justify. */
while (scan < nbytes)
{
result <<= 8;
scan++;
}
- /* Create correct expression */
+
+ /* Create correct expression. */
exp->X_op = O_constant;
exp->X_add_number = result;
- /* Fake it so that we can read the next char too */
+
+ /* Fake it so that we can read the next char too. */
if (input_line_pointer[0] != '\'' ||
(input_line_pointer[0] == '\'' && input_line_pointer[1] == '\''))
{
input_line_pointer++;
}
}
+#endif /* TC_M68K */
\f
#ifdef REPEAT_CONS_EXPRESSIONS
unsigned int nbytes;
{
expressionS count;
- register int i;
+ int i;
expression (exp);
if (count.X_op != O_constant
|| count.X_add_number <= 0)
{
- as_warn (_("Unresolvable or nonpositive repeat count; using 1"));
+ as_warn (_("unresolvable or nonpositive repeat count; using 1"));
return;
}
point number. */
static int
-hex_float (float_type, bytes)
- int float_type;
- char *bytes;
+hex_float (int float_type, char *bytes)
{
int length;
int i;
break;
default:
- as_bad (_("Unknown floating type type '%c'"), float_type);
+ as_bad (_("unknown floating type type '%c'"), float_type);
return -1;
}
int d;
/* The MRI assembler accepts arbitrary underscores strewn about
- through the hex constant, so we ignore them as well. */
+ through the hex constant, so we ignore them as well. */
if (*input_line_pointer == '_')
{
++input_line_pointer;
if (i >= length)
{
- as_warn (_("Floating point constant too large"));
+ as_warn (_("floating point constant too large"));
return -1;
}
d = hex_value (*input_line_pointer) << 4;
return length;
}
-/*
- * float_cons()
- *
- * CONStruct some more frag chars of .floats .ffloats etc.
- * Makes 0 or more new frags.
- * If need_pass_2 == 1, no frags are emitted.
- * This understands only floating literals, not expressions. Sorry.
- *
- * A floating constant is defined by atof_generic(), except it is preceded
- * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its
- * reading, I decided to be incompatible. This always tries to give you
- * rounded bits to the precision of the pseudo-op. Former AS did premature
- * truncatation, restored noisy bits instead of trailing 0s AND gave you
- * a choice of 2 flavours of noise according to which of 2 floating-point
- * scanners you directed AS to use.
- *
- * In: input_line_pointer->whitespace before, or '0' of flonum.
- *
- */
+/* float_cons()
+
+ CONStruct some more frag chars of .floats .ffloats etc.
+ Makes 0 or more new frags.
+ If need_pass_2 == 1, no frags are emitted.
+ This understands only floating literals, not expressions. Sorry.
+
+ A floating constant is defined by atof_generic(), except it is preceded
+ by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its
+ reading, I decided to be incompatible. This always tries to give you
+ rounded bits to the precision of the pseudo-op. Former AS did premature
+ truncation, restored noisy bits instead of trailing 0s AND gave you
+ a choice of 2 flavours of noise according to which of 2 floating-point
+ scanners you directed AS to use.
+
+ In: input_line_pointer->whitespace before, or '0' of flonum. */
void
-float_cons (float_type)
- /* Clobbers input_line-pointer, checks end-of-line. */
- register int float_type; /* 'f':.ffloat ... 'F':.float ... */
+float_cons (/* Clobbers input_line-pointer, checks end-of-line. */
+ int float_type /* 'f':.ffloat ... 'F':.float ... */)
{
- register char *p;
- int length; /* Number of chars in an object. */
- register char *err; /* Error from scanning floating literal. */
+ char *p;
+ int length; /* Number of chars in an object. */
+ char *err; /* Error from scanning floating literal. */
char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
if (is_it_end_of_statement ())
md_flush_pending_output ();
#endif
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
do
{
- /* input_line_pointer->1st char of a flonum (we hope!). */
+ /* input_line_pointer->1st char of a flonum (we hope!). */
SKIP_WHITESPACE ();
/* Skip any 0{letter} that may be present. Don't even check if the
- * letter is legal. Someone may invent a "z" format and this routine
- * has no use for such information. Lusers beware: you get
- * diagnostics if your input is ill-conditioned.
- */
+ letter is legal. Someone may invent a "z" format and this routine
+ has no use for such information. Lusers beware: you get
+ diagnostics if your input is ill-conditioned. */
if (input_line_pointer[0] == '0'
- && isalpha ((unsigned char) input_line_pointer[1]))
+ && ISALPHA (input_line_pointer[1]))
input_line_pointer += 2;
/* Accept :xxxx, where the x's are hex digits, for a floating
- point with the exact digits specified. */
+ point with the exact digits specified. */
if (input_line_pointer[0] == ':')
{
++input_line_pointer;
{
err = md_atof (float_type, temp, &length);
know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
- know (length > 0);
+ know (err != NULL || length > 0);
if (err)
{
- as_bad (_("Bad floating literal: %s"), err);
+ as_bad (_("bad floating literal: %s"), err);
ignore_rest_of_line ();
return;
}
++input_line_pointer;
expression (&count_exp);
+
if (count_exp.X_op != O_constant
|| count_exp.X_add_number <= 0)
- {
- as_warn (_("unresolvable or nonpositive repeat count; using 1"));
- }
+ as_warn (_("unresolvable or nonpositive repeat count; using 1"));
else
count = count_exp.X_add_number;
}
}
while (*input_line_pointer++ == ',');
- --input_line_pointer; /* Put terminator back into stream. */
+ /* Put terminator back into stream. */
+ --input_line_pointer;
demand_empty_rest_of_line ();
-} /* float_cons() */
+}
\f
-/* Return the size of a LEB128 value */
+/* Return the size of a LEB128 value. */
static inline int
-sizeof_sleb128 (value)
- offsetT value;
+sizeof_sleb128 (offsetT value)
{
- register int size = 0;
- register unsigned byte;
+ int size = 0;
+ unsigned byte;
do
{
}
static inline int
-sizeof_uleb128 (value)
- valueT value;
+sizeof_uleb128 (valueT value)
{
- register int size = 0;
- register unsigned byte;
+ int size = 0;
do
{
- byte = (value & 0x7f);
value >>= 7;
size += 1;
}
}
int
-sizeof_leb128 (value, sign)
- valueT value;
- int sign;
+sizeof_leb128 (valueT value, int sign)
{
if (sign)
return sizeof_sleb128 ((offsetT) value);
/* Output a LEB128 value. */
static inline int
-output_sleb128 (p, value)
- char *p;
- offsetT value;
+output_sleb128 (char *p, offsetT value)
{
- register char *orig = p;
- register int more;
+ char *orig = p;
+ int more;
do
{
}
static inline int
-output_uleb128 (p, value)
- char *p;
- valueT value;
+output_uleb128 (char *p, valueT value)
{
char *orig = p;
}
int
-output_leb128 (p, value, sign)
- char *p;
- valueT value;
- int sign;
+output_leb128 (char *p, valueT value, int sign)
{
if (sign)
return output_sleb128 (p, (offsetT) value);
for "normal" values that this be streamlined. */
static inline int
-output_big_sleb128 (p, bignum, size)
- char *p;
- LITTLENUM_TYPE *bignum;
- int size;
+output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size)
{
char *orig = p;
valueT val = 0;
unsigned byte;
/* Strip leading sign extensions off the bignum. */
- while (size > 0 && bignum[size-1] == (LITTLENUM_TYPE)-1)
+ while (size > 1
+ && bignum[size - 1] == LITTLENUM_MASK
+ && bignum[size - 2] > LITTLENUM_MASK / 2)
size--;
- do
- {
- if (loaded < 7 && size > 0)
- {
- val |= (*bignum << loaded);
- loaded += 8 * CHARS_PER_LITTLENUM;
- size--;
- bignum++;
- }
-
- byte = val & 0x7f;
- loaded -= 7;
- val >>= 7;
+ do
+ {
+ /* OR in the next part of the littlenum. */
+ val |= (*bignum << loaded);
+ loaded += LITTLENUM_NUMBER_OF_BITS;
+ size--;
+ bignum++;
- if (size == 0)
+ /* Add bytes until there are less than 7 bits left in VAL
+ or until every non-sign bit has been written. */
+ do
{
- if ((val == 0 && (byte & 0x40) == 0)
- || (~(val | ~(((valueT)1 << loaded) - 1)) == 0
- && (byte & 0x40) != 0))
+ byte = val & 0x7f;
+ loaded -= 7;
+ val >>= 7;
+ if (size > 0
+ || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1))
byte |= 0x80;
+
+ if (orig)
+ *p = byte;
+ p++;
}
+ while ((byte & 0x80) != 0 && loaded >= 7);
+ }
+ while (size > 0);
+ /* Mop up any left-over bits (of which there will be less than 7). */
+ if ((byte & 0x80) != 0)
+ {
+ /* Sign-extend VAL. */
+ if (val & (1 << (loaded - 1)))
+ val |= ~0 << loaded;
if (orig)
- *p = byte;
+ *p = val & 0x7f;
p++;
}
- while (byte & 0x80);
return p - orig;
}
static inline int
-output_big_uleb128 (p, bignum, size)
- char *p;
- LITTLENUM_TYPE *bignum;
- int size;
+output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size)
{
char *orig = p;
valueT val = 0;
/* Strip leading zeros off the bignum. */
/* XXX: Is this needed? */
- while (size > 0 && bignum[size-1] == 0)
+ while (size > 0 && bignum[size - 1] == 0)
size--;
do
}
static int
-output_big_leb128 (p, bignum, size, sign)
- char *p;
- LITTLENUM_TYPE *bignum;
- int size, sign;
+output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign)
{
if (sign)
return output_big_sleb128 (p, bignum, size);
/* Generate the appropriate fragments for a given expression to emit a
leb128 value. */
-void
-emit_leb128_expr(exp, sign)
- expressionS *exp;
- int sign;
+static void
+emit_leb128_expr (expressionS *exp, int sign)
{
operatorT op = exp->X_op;
+ unsigned int nbytes;
if (op == O_absent || op == O_illegal)
{
}
else if (op == O_big && exp->X_add_number <= 0)
{
- as_bad (_("floating point number invalid; zero assumed"));
+ as_bad (_("floating point number invalid"));
exp->X_add_number = 0;
op = O_constant;
}
as_warn (_("register value used as expression"));
op = O_constant;
}
+ else if (op == O_constant
+ && sign
+ && (exp->X_add_number < 0) == !exp->X_extrabit)
+ {
+ /* We're outputting a signed leb128 and the sign of X_add_number
+ doesn't reflect the sign of the original value. Convert EXP
+ to a correctly-extended bignum instead. */
+ convert_to_bignum (exp, exp->X_extrabit);
+ op = O_big;
+ }
+
+ /* Let check_eh_frame know that data is being emitted. nbytes == -1 is
+ a signal that this is leb128 data. It shouldn't optimize this away. */
+ nbytes = (unsigned int) -1;
+ if (check_eh_frame (exp, &nbytes))
+ abort ();
+
+ /* Let the backend know that subsequent data may be byte aligned. */
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
if (op == O_constant)
{
}
else
{
- /* Otherwise, we have to create a variable sized fragment and
+ /* Otherwise, we have to create a variable sized fragment and
resolve things later. */
- frag_var (rs_leb128, sizeof_uleb128 (~(valueT)0), 0, sign,
+ frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign,
make_expr_symbol (exp), 0, (char *) NULL);
}
}
/* Parse the .sleb128 and .uleb128 pseudos. */
void
-s_leb128 (sign)
- int sign;
+s_leb128 (int sign)
{
expressionS exp;
- do {
- expression (&exp);
- emit_leb128_expr (&exp, sign);
- } while (*input_line_pointer++ == ',');
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
+
+ do
+ {
+ expression (&exp);
+ emit_leb128_expr (&exp, sign);
+ }
+ while (*input_line_pointer++ == ',');
input_line_pointer--;
demand_empty_rest_of_line ();
}
\f
-/*
- * stringer()
- *
- * We read 0 or more ',' separated, double-quoted strings.
- *
- * Caller should have checked need_pass_2 is FALSE because we don't check it.
- */
-
-
-void
-stringer (append_zero) /* Worker to do .ascii etc statements. */
- /* Checks end-of-line. */
- register int append_zero; /* 0: don't append '\0', else 1 */
+static void
+stringer_append_char (int c, int bitsize)
+{
+ if (!target_big_endian)
+ FRAG_APPEND_1_CHAR (c);
+
+ switch (bitsize)
+ {
+ case 64:
+ FRAG_APPEND_1_CHAR (0);
+ FRAG_APPEND_1_CHAR (0);
+ FRAG_APPEND_1_CHAR (0);
+ FRAG_APPEND_1_CHAR (0);
+ /* Fall through. */
+ case 32:
+ FRAG_APPEND_1_CHAR (0);
+ FRAG_APPEND_1_CHAR (0);
+ /* Fall through. */
+ case 16:
+ FRAG_APPEND_1_CHAR (0);
+ /* Fall through. */
+ case 8:
+ break;
+ default:
+ /* Called with invalid bitsize argument. */
+ abort ();
+ break;
+ }
+ if (target_big_endian)
+ FRAG_APPEND_1_CHAR (c);
+}
+
+/* Worker to do .ascii etc statements.
+ Reads 0 or more ',' separated, double-quoted strings.
+ Caller should have checked need_pass_2 is FALSE because we don't
+ check it.
+ Checks for end-of-line.
+ BITS_APPENDZERO says how many bits are in a target char.
+ The bottom bit is set if a NUL char should be appended to the strings. */
+
+void
+stringer (int bits_appendzero)
{
- register unsigned int c;
+ const int bitsize = bits_appendzero & ~7;
+ const int append_zero = bits_appendzero & 1;
+ unsigned int c;
+#if !defined(NO_LISTING) && defined (OBJ_ELF)
char *start;
+#endif
#ifdef md_flush_pending_output
md_flush_pending_output ();
#endif
- /*
- * The following awkward logic is to parse ZERO or more strings,
- * comma separated. Recall a string expression includes spaces
- * before the opening '\"' and spaces after the closing '\"'.
- * We fake a leading ',' if there is (supposed to be)
- * a 1st, expression. We keep demanding expressions for each
- * ','.
- */
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
+ /* The following awkward logic is to parse ZERO or more strings,
+ comma separated. Recall a string expression includes spaces
+ before the opening '\"' and spaces after the closing '\"'.
+ We fake a leading ',' if there is (supposed to be)
+ a 1st, expression. We keep demanding expressions for each ','. */
if (is_it_end_of_statement ())
{
- c = 0; /* Skip loop. */
- ++input_line_pointer; /* Compensate for end of loop. */
+ c = 0; /* Skip loop. */
+ ++input_line_pointer; /* Compensate for end of loop. */
}
else
{
- c = ','; /* Do loop. */
+ c = ','; /* Do loop. */
+ }
+ /* If we have been switched into the abs_section then we
+ will not have an obstack onto which we can hang strings. */
+ if (now_seg == absolute_section)
+ {
+ as_bad (_("strings must be placed into a section"));
+ c = 0;
+ ignore_rest_of_line ();
}
+
while (c == ',' || c == '<' || c == '"')
{
SKIP_WHITESPACE ();
switch (*input_line_pointer)
{
case '\"':
- ++input_line_pointer; /*->1st char of string. */
+ ++input_line_pointer; /*->1st char of string. */
+#if !defined(NO_LISTING) && defined (OBJ_ELF)
start = input_line_pointer;
+#endif
+
while (is_a_char (c = next_char_of_string ()))
- {
- FRAG_APPEND_1_CHAR (c);
- }
+ stringer_append_char (c, bitsize);
+
if (append_zero)
- {
- FRAG_APPEND_1_CHAR (0);
- }
+ stringer_append_char (0, bitsize);
+
know (input_line_pointer[-1] == '\"');
-#ifndef NO_LISTING
-#ifdef OBJ_ELF
+#if !defined(NO_LISTING) && defined (OBJ_ELF)
/* In ELF, when gcc is emitting DWARF 1 debugging output, it
- will emit .string with a filename in the .debug section
- after a sequence of constants. See the comment in
- emit_expr for the sequence. emit_expr will set
- dwarf_file_string to non-zero if this string might be a
- source file name. */
+ will emit .string with a filename in the .debug section
+ after a sequence of constants. See the comment in
+ emit_expr for the sequence. emit_expr will set
+ dwarf_file_string to non-zero if this string might be a
+ source file name. */
if (strcmp (segment_name (now_seg), ".debug") != 0)
dwarf_file_string = 0;
else if (dwarf_file_string)
input_line_pointer[-1] = c;
}
#endif
-#endif
break;
case '<':
input_line_pointer++;
c = get_single_number ();
- FRAG_APPEND_1_CHAR (c);
+ stringer_append_char (c, bitsize);
if (*input_line_pointer != '>')
- {
- as_bad (_("Expected <nn>"));
- }
+ as_bad (_("expected <nn>"));
+
input_line_pointer++;
break;
case ',':
}
demand_empty_rest_of_line ();
-} /* stringer() */
+}
\f
/* FIXME-SOMEDAY: I had trouble here on characters with the
high bits set. We'll probably also have trouble with
multibyte chars, wide chars, etc. Also be careful about
- returning values bigger than 1 byte. xoxorich. */
+ returning values bigger than 1 byte. xoxorich. */
-unsigned int
-next_char_of_string ()
+unsigned int
+next_char_of_string (void)
{
- register unsigned int c;
+ unsigned int c;
c = *input_line_pointer++ & CHAR_MASK;
switch (c)
break;
case '\n':
- as_warn (_("Unterminated string: Newline inserted."));
+ as_warn (_("unterminated string; newline inserted"));
bump_line_counters ();
break;
case '\\':
case '"':
- break; /* As itself. */
+ break; /* As itself. */
case '0':
case '1':
long number;
int i;
- for (i = 0, number = 0; isdigit (c) && i < 3; c = *input_line_pointer++, i++)
+ for (i = 0, number = 0;
+ ISDIGIT (c) && i < 3;
+ c = *input_line_pointer++, i++)
{
number = number * 8 + c - '0';
}
+
c = number & 0xff;
}
--input_line_pointer;
number = 0;
c = *input_line_pointer++;
- while (isxdigit (c))
+ while (ISXDIGIT (c))
{
- if (isdigit (c))
+ if (ISDIGIT (c))
number = number * 16 + c - '0';
- else if (isupper (c))
+ else if (ISUPPER (c))
number = number * 16 + c - 'A' + 10;
else
number = number * 16 + c - 'a' + 10;
break;
case '\n':
- /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */
- as_warn (_("Unterminated string: Newline inserted."));
+ /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */
+ as_warn (_("unterminated string; newline inserted"));
c = '\n';
bump_line_counters ();
break;
default:
#ifdef ONLY_STANDARD_ESCAPES
- as_bad (_("Bad escaped character in string, '?' assumed"));
+ as_bad (_("bad escaped character in string"));
c = '?';
#endif /* ONLY_STANDARD_ESCAPES */
break;
- } /* switch on escaped char */
+ }
break;
#endif /* ! defined (NO_STRING_ESCAPES) */
default:
break;
- } /* switch on char */
+ }
return (c);
-} /* next_char_of_string() */
+}
\f
static segT
-get_segmented_expression (expP)
- register expressionS *expP;
+get_segmented_expression (expressionS *expP)
{
- register segT retval;
+ segT retval;
retval = expression (expP);
if (expP->X_op == O_illegal
|| expP->X_op == O_absent
|| expP->X_op == O_big)
{
- as_bad (_("expected address expression; zero assumed"));
+ as_bad (_("expected address expression"));
expP->X_op = O_constant;
expP->X_add_number = 0;
retval = absolute_section;
return retval;
}
-static segT
-get_known_segmented_expression (expP)
- register expressionS *expP;
+static segT
+get_known_segmented_expression (expressionS *expP)
{
- register segT retval;
+ segT retval = get_segmented_expression (expP);
- if ((retval = get_segmented_expression (expP)) == undefined_section)
+ if (retval == undefined_section)
{
/* There is no easy way to extract the undefined symbol from the
expression. */
expP->X_op = O_constant;
expP->X_add_number = 0;
}
- know (retval == absolute_section || SEG_NORMAL (retval));
- return (retval);
-} /* get_known_segmented_expression() */
-
-offsetT
-get_absolute_expression ()
-{
- expressionS exp;
-
- expression (&exp);
- if (exp.X_op != O_constant)
- {
- if (exp.X_op != O_absent)
- as_bad (_("bad or irreducible absolute expression; zero assumed"));
- exp.X_add_number = 0;
- }
- return exp.X_add_number;
+ return retval;
}
-char /* return terminator */
-get_absolute_expression_and_terminator (val_pointer)
- long *val_pointer; /* return value of expression */
+char /* Return terminator. */
+get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */)
{
/* FIXME: val_pointer should probably be offsetT *. */
*val_pointer = (long) get_absolute_expression ();
return (*input_line_pointer++);
}
\f
-/*
- * demand_copy_C_string()
- *
- * Like demand_copy_string, but return NULL if the string contains any '\0's.
- * Give a warning if that happens.
- */
+/* Like demand_copy_string, but return NULL if the string contains any '\0's.
+ Give a warning if that happens. */
+
char *
-demand_copy_C_string (len_pointer)
- int *len_pointer;
+demand_copy_C_string (int *len_pointer)
{
- register char *s;
+ char *s;
if ((s = demand_copy_string (len_pointer)) != 0)
{
- register int len;
+ int len;
for (len = *len_pointer; len > 0; len--)
{
s = 0;
len = 1;
*len_pointer = 0;
- as_bad (_("This string may not contain \'\\0\'"));
+ as_bad (_("this string may not contain \'\\0\'"));
}
}
}
+
return s;
}
\f
-/*
- * demand_copy_string()
- *
- * Demand string, but return a safe (=private) copy of the string.
- * Return NULL if we can't read a string here.
- */
+/* Demand string, but return a safe (=private) copy of the string.
+ Return NULL if we can't read a string here. */
+
char *
-demand_copy_string (lenP)
- int *lenP;
+demand_copy_string (int *lenP)
{
- register unsigned int c;
- register int len;
+ unsigned int c;
+ int len;
char *retval;
len = 0;
SKIP_WHITESPACE ();
if (*input_line_pointer == '\"')
{
- input_line_pointer++; /* Skip opening quote. */
+ input_line_pointer++; /* Skip opening quote. */
while (is_a_char (c = next_char_of_string ()))
{
len++;
}
/* JF this next line is so demand_copy_C_string will return a
- null terminated string. */
+ null terminated string. */
obstack_1grow (¬es, '\0');
- retval = obstack_finish (¬es);
+ retval = (char *) obstack_finish (¬es);
}
else
{
- as_warn (_("Missing string"));
+ as_bad (_("missing string"));
retval = NULL;
ignore_rest_of_line ();
}
*lenP = len;
return (retval);
-} /* demand_copy_string() */
+}
\f
-/*
- * is_it_end_of_statement()
- *
- * In: Input_line_pointer->next character.
- *
- * Do: Skip input_line_pointer over all whitespace.
- *
- * Out: 1 if input_line_pointer->end-of-line.
-*/
-int
-is_it_end_of_statement ()
+/* In: Input_line_pointer->next character.
+
+ Do: Skip input_line_pointer over all whitespace.
+
+ Out: 1 if input_line_pointer->end-of-line. */
+
+int
+is_it_end_of_statement (void)
{
SKIP_WHITESPACE ();
return (is_end_of_line[(unsigned char) *input_line_pointer]);
-} /* is_it_end_of_statement() */
+}
-void
-equals (sym_name, reassign)
- char *sym_name;
- int reassign;
+void
+equals (char *sym_name, int reassign)
{
- register symbolS *symbolP; /* symbol we are working with */
char *stop = NULL;
- char stopc;
+ char stopc = 0;
input_line_pointer++;
if (*input_line_pointer == '=')
input_line_pointer++;
+ if (reassign < 0 && *input_line_pointer == '=')
+ input_line_pointer++;
while (*input_line_pointer == ' ' || *input_line_pointer == '\t')
input_line_pointer++;
if (flag_mri)
stop = mri_comment_field (&stopc);
- if (sym_name[0] == '.' && sym_name[1] == '\0')
+ assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign);
+
+ if (flag_mri)
{
- /* Turn '. = mumble' into a .org mumble */
- register segT segment;
- expressionS exp;
+ demand_empty_rest_of_line ();
+ mri_comment_end (stop, stopc);
+ }
+}
- segment = get_known_segmented_expression (&exp);
- if (!need_pass_2)
- do_org (segment, &exp, 0);
+/* .incbin -- include a file verbatim at the current location. */
+
+void
+s_incbin (int x ATTRIBUTE_UNUSED)
+{
+ FILE * binfile;
+ char * path;
+ char * filename;
+ char * binfrag;
+ long skip = 0;
+ long count = 0;
+ long bytes;
+ int len;
+
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
+
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
+ SKIP_WHITESPACE ();
+ filename = demand_copy_string (& len);
+ if (filename == NULL)
+ return;
+
+ SKIP_WHITESPACE ();
+
+ /* Look for optional skip and count. */
+ if (* input_line_pointer == ',')
+ {
+ ++ input_line_pointer;
+ skip = get_absolute_expression ();
+
+ SKIP_WHITESPACE ();
+
+ if (* input_line_pointer == ',')
+ {
+ ++ input_line_pointer;
+
+ count = get_absolute_expression ();
+ if (count == 0)
+ as_warn (_(".incbin count zero, ignoring `%s'"), filename);
+
+ SKIP_WHITESPACE ();
+ }
+ }
+
+ demand_empty_rest_of_line ();
+
+ /* Try opening absolute path first, then try include dirs. */
+ binfile = fopen (filename, FOPEN_RB);
+ if (binfile == NULL)
+ {
+ int i;
+
+ path = (char *) xmalloc ((unsigned long) len + include_dir_maxlen + 5);
+
+ for (i = 0; i < include_dir_count; i++)
+ {
+ sprintf (path, "%s/%s", include_dirs[i], filename);
+
+ binfile = fopen (path, FOPEN_RB);
+ if (binfile != NULL)
+ break;
+ }
+
+ if (binfile == NULL)
+ as_bad (_("file not found: %s"), filename);
}
else
+ path = xstrdup (filename);
+
+ if (binfile)
{
- symbolP = symbol_find_or_make (sym_name);
- /* Permit register names to be redefined. */
- if (! reassign
- && S_IS_DEFINED (symbolP)
- && S_GET_SEGMENT (symbolP) != reg_section)
- as_bad (_("symbol `%s' already defined"), S_GET_NAME (symbolP));
- pseudo_set (symbolP);
+ long file_len;
+
+ register_dependency (path);
+
+ /* Compute the length of the file. */
+ if (fseek (binfile, 0, SEEK_END) != 0)
+ {
+ as_bad (_("seek to end of .incbin file failed `%s'"), path);
+ goto done;
+ }
+ file_len = ftell (binfile);
+
+ /* If a count was not specified use the remainder of the file. */
+ if (count == 0)
+ count = file_len - skip;
+
+ if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len)
+ {
+ as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"),
+ skip, count, file_len);
+ goto done;
+ }
+
+ if (fseek (binfile, skip, SEEK_SET) != 0)
+ {
+ as_bad (_("could not skip to %ld in file `%s'"), skip, path);
+ goto done;
+ }
+
+ /* Allocate frag space and store file contents in it. */
+ binfrag = frag_more (count);
+
+ bytes = fread (binfrag, 1, count, binfile);
+ if (bytes < count)
+ as_warn (_("truncated file `%s', %ld of %ld bytes read"),
+ path, bytes, count);
}
+done:
+ if (binfile != NULL)
+ fclose (binfile);
+ if (path)
+ free (path);
+}
- if (flag_mri)
- {
- ignore_rest_of_line (); /* check garbage after the expression */
- mri_comment_end (stop, stopc);
- }
-} /* equals() */
-
-/* .include -- include a file at this point. */
-
-/* ARGSUSED */
-void
-s_include (arg)
- int arg ATTRIBUTE_UNUSED;
+/* .include -- include a file at this point. */
+
+void
+s_include (int arg ATTRIBUTE_UNUSED)
{
- char *newbuf;
char *filename;
int i;
- FILE *try;
+ FILE *try_file;
char *path;
- if (! flag_m68k_mri)
+ if (!flag_m68k_mri)
{
filename = demand_copy_string (&i);
if (filename == NULL)
{
/* demand_copy_string has already printed an error and
- called ignore_rest_of_line. */
+ called ignore_rest_of_line. */
return;
}
}
{
SKIP_WHITESPACE ();
i = 0;
- while (! is_end_of_line[(unsigned char) *input_line_pointer]
+ while (!is_end_of_line[(unsigned char) *input_line_pointer]
&& *input_line_pointer != ' '
&& *input_line_pointer != '\t')
{
++input_line_pointer;
++i;
}
+
obstack_1grow (¬es, '\0');
- filename = obstack_finish (¬es);
- while (! is_end_of_line[(unsigned char) *input_line_pointer])
+ filename = (char *) obstack_finish (¬es);
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
}
+
demand_empty_rest_of_line ();
- path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ );
+ path = (char *) xmalloc ((unsigned long) i
+ + include_dir_maxlen + 5 /* slop */ );
+
for (i = 0; i < include_dir_count; i++)
{
strcpy (path, include_dirs[i]);
strcat (path, "/");
strcat (path, filename);
- if (0 != (try = fopen (path, "r")))
+ if (0 != (try_file = fopen (path, FOPEN_RT)))
{
- fclose (try);
+ fclose (try_file);
goto gotit;
}
}
+
free (path);
path = filename;
gotit:
- /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
+ /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
register_dependency (path);
- newbuf = input_scrub_include_file (path, input_line_pointer);
- buffer_limit = input_scrub_next_buffer (&input_line_pointer);
-} /* s_include() */
+ input_scrub_insert_file (path);
+}
-void
-add_include_dir (path)
- char *path;
+void
+add_include_dir (char *path)
{
int i;
if (include_dir_count == 0)
{
include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs));
- include_dirs[0] = "."; /* Current dir */
+ include_dirs[0] = "."; /* Current dir. */
include_dir_count = 2;
}
else
{
include_dir_count++;
- include_dirs = (char **) realloc (include_dirs,
- include_dir_count * sizeof (*include_dirs));
+ include_dirs =
+ (char **) xrealloc (include_dirs,
+ include_dir_count * sizeof (*include_dirs));
}
- include_dirs[include_dir_count - 1] = path; /* New one */
+ include_dirs[include_dir_count - 1] = path; /* New one. */
i = strlen (path);
if (i > include_dir_maxlen)
include_dir_maxlen = i;
-} /* add_include_dir() */
+}
\f
/* Output debugging information to denote the source file. */
static void
-generate_file_debug ()
+generate_file_debug (void)
{
if (debug_type == DEBUG_STABS)
stabs_generate_asm_file ();
/* Output line number debugging information for the current source line. */
void
-generate_lineno_debug ()
+generate_lineno_debug (void)
{
-#ifdef ECOFF_DEBUGGING
- /* ECOFF assemblers automatically generate debugging information.
- FIXME: This should probably be handled elsewhere. */
- if (debug_type == DEBUG_UNSPECIFIED)
- {
- if (ECOFF_DEBUGGING && ecoff_no_current_file ())
- debug_type = DEBUG_ECOFF;
- else
- debug_type = DEBUG_NONE;
- }
-#endif
-
switch (debug_type)
{
case DEBUG_UNSPECIFIED:
case DEBUG_NONE:
+ case DEBUG_DWARF:
break;
case DEBUG_STABS:
stabs_generate_asm_lineno ();
case DEBUG_ECOFF:
ecoff_generate_asm_lineno ();
break;
- case DEBUG_DWARF:
case DEBUG_DWARF2:
- /* FIXME. */
+ /* ??? We could here indicate to dwarf2dbg.c that something
+ has changed. However, since there is additional backend
+ support that is required (calling dwarf2_emit_insn), we
+ let dwarf2dbg.c call as_where on its own. */
break;
}
}
END_P is zero for .func, and non-zero for .endfunc. */
void
-s_func (end_p)
- int end_p;
+s_func (int end_p)
{
do_s_func (end_p, NULL);
}
/* Subroutine of s_func so targets can choose a different default prefix.
If DEFAULT_PREFIX is NULL, use the target's "leading char". */
-void
-do_s_func (end_p, default_prefix)
- int end_p;
- const char *default_prefix;
+static void
+do_s_func (int end_p, const char *default_prefix)
{
/* Record the current function so that we can issue an error message for
misplaced .func,.endfunc, and also so that .endfunc needs no
}
else /* ! end_p */
{
- char *name,*label;
- char delim1,delim2;
+ char *name, *label;
+ char delim1, delim2;
if (current_name != NULL)
{
if (*input_line_pointer != ',')
{
if (default_prefix)
- asprintf (&label, "%s%s", default_prefix, name);
+ {
+ if (asprintf (&label, "%s%s", default_prefix, name) == -1)
+ as_fatal ("%s", xstrerror (errno));
+ }
else
{
- char leading_char = 0;
-#ifdef BFD_ASSEMBLER
- leading_char = bfd_get_symbol_leading_char (stdoutput);
-#endif
+ char leading_char = bfd_get_symbol_leading_char (stdoutput);
/* Missing entry point, use function's name with the leading
char prepended. */
if (leading_char)
- asprintf (&label, "%c%s", leading_char, name);
+ {
+ if (asprintf (&label, "%c%s", leading_char, name) == -1)
+ as_fatal ("%s", xstrerror (errno));
+ }
else
label = name;
}
demand_empty_rest_of_line ();
}
\f
-void
-s_ignore (arg)
- int arg ATTRIBUTE_UNUSED;
+#ifdef HANDLE_BUNDLE
+
+void
+s_bundle_align_mode (int arg ATTRIBUTE_UNUSED)
{
- while (!is_end_of_line[(unsigned char) *input_line_pointer])
+ unsigned int align = get_absolute_expression ();
+ SKIP_WHITESPACE ();
+ demand_empty_rest_of_line ();
+
+ if (align > (unsigned int) TC_ALIGN_LIMIT)
+ as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"),
+ (unsigned int) TC_ALIGN_LIMIT);
+
+ if (bundle_lock_frag != NULL)
{
- ++input_line_pointer;
+ as_bad (_("cannot change .bundle_align_mode inside .bundle_lock"));
+ return;
}
- ++input_line_pointer;
+
+ bundle_align_p2 = align;
+}
+
+void
+s_bundle_lock (int arg ATTRIBUTE_UNUSED)
+{
+ demand_empty_rest_of_line ();
+
+ if (bundle_align_p2 == 0)
+ {
+ as_bad (_(".bundle_lock is meaningless without .bundle_align_mode"));
+ return;
+ }
+
+ if (bundle_lock_depth == 0)
+ {
+ bundle_lock_frchain = frchain_now;
+ bundle_lock_frag = start_bundle ();
+ }
+ ++bundle_lock_depth;
+}
+
+void
+s_bundle_unlock (int arg ATTRIBUTE_UNUSED)
+{
+ unsigned int size;
+
+ demand_empty_rest_of_line ();
+
+ if (bundle_lock_frag == NULL)
+ {
+ as_bad (_(".bundle_unlock without preceding .bundle_lock"));
+ return;
+ }
+
+ gas_assert (bundle_align_p2 > 0);
+
+ gas_assert (bundle_lock_depth > 0);
+ if (--bundle_lock_depth > 0)
+ return;
+
+ size = pending_bundle_size (bundle_lock_frag);
+
+ if (size > (1U << bundle_align_p2))
+ as_bad (_(".bundle_lock sequence is %u bytes, but bundle size only %u"),
+ size, 1 << bundle_align_p2);
+ else
+ finish_bundle (bundle_lock_frag, size);
+
+ bundle_lock_frag = NULL;
+ bundle_lock_frchain = NULL;
}
+#endif /* HANDLE_BUNDLE */
+\f
+void
+s_ignore (int arg ATTRIBUTE_UNUSED)
+{
+ ignore_rest_of_line ();
+}
void
-read_print_statistics (file)
- FILE *file;
+read_print_statistics (FILE *file)
{
hash_print_statistics (file, "pseudo-op table", po_hash);
}
-/* end of read.c */
+/* Inserts the given line into the input stream.
+
+ This call avoids macro/conditionals nesting checking, since the contents of
+ the line are assumed to replace the contents of a line already scanned.
+
+ An appropriate use of this function would be substitution of input lines when
+ called by md_start_line_hook(). The given line is assumed to already be
+ properly scrubbed. */
+
+void
+input_scrub_insert_line (const char *line)
+{
+ sb newline;
+ size_t len = strlen (line);
+ sb_build (&newline, len);
+ sb_add_buffer (&newline, line, len);
+ input_scrub_include_sb (&newline, input_line_pointer, 0);
+ sb_kill (&newline);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+}
+
+/* Insert a file into the input stream; the path must resolve to an actual
+ file; no include path searching or dependency registering is performed. */
+
+void
+input_scrub_insert_file (char *path)
+{
+ input_scrub_include_file (path, input_line_pointer);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+}
+
+/* Find the end of a line, considering quotation and escaping of quotes. */
+
+#if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS)
+# define TC_SINGLE_QUOTE_STRINGS 1
+#endif
+
+static char *
+_find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED,
+ int in_macro)
+{
+ char inquote = '\0';
+ int inescape = 0;
+
+ while (!is_end_of_line[(unsigned char) *s]
+ || (inquote && !ISCNTRL (*s))
+ || (inquote == '\'' && flag_mri)
+#ifdef TC_EOL_IN_INSN
+ || (insn && TC_EOL_IN_INSN (s))
+#endif
+ /* PR 6926: When we are parsing the body of a macro the sequence
+ \@ is special - it refers to the invocation count. If the @
+ character happens to be registered as a line-separator character
+ by the target, then the is_end_of_line[] test above will have
+ returned true, but we need to ignore the line separating
+ semantics in this particular case. */
+ || (in_macro && inescape && *s == '@')
+ )
+ {
+ if (mri_string && *s == '\'')
+ inquote ^= *s;
+ else if (inescape)
+ inescape = 0;
+ else if (*s == '\\')
+ inescape = 1;
+ else if (!inquote
+ ? *s == '"'
+#ifdef TC_SINGLE_QUOTE_STRINGS
+ || (TC_SINGLE_QUOTE_STRINGS && *s == '\'')
+#endif
+ : *s == inquote)
+ inquote ^= *s;
+ ++s;
+ }
+ if (inquote)
+ as_warn (_("missing closing `%c'"), inquote);
+ if (inescape)
+ as_warn (_("stray `\\'"));
+ return s;
+}
+
+char *
+find_end_of_line (char *s, int mri_string)
+{
+ return _find_end_of_line (s, mri_string, 0, 0);
+}
projects / platform / upstream / binutils.git / blobdiff