1 /* tc-hppa.c -- Assemble for the PA
2 Copyright (C) 1989, 93, 94, 95, 96, 97, 98, 1999
3 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
23 /* HP PA-RISC support was contributed by the Center for Software Science
24 at the University of Utah. */
32 #include "bfd/libhppa.h"
33 #include "bfd/libbfd.h"
35 /* Be careful, this file includes data *declarations*. */
36 #include "opcode/hppa.h"
38 #if defined (OBJ_ELF) && defined (OBJ_SOM)
39 error only one of OBJ_ELF and OBJ_SOM can be defined
42 /* A "convient" place to put object file dependencies which do
43 not need to be seen outside of tc-hppa.c. */
45 /* Object file formats specify relocation types. */
46 typedef elf_hppa_reloc_type reloc_type;
48 /* Object file formats specify BFD symbol types. */
49 typedef elf_symbol_type obj_symbol_type;
52 /* How to generate a relocation. */
53 #define hppa_gen_reloc_type _bfd_elf64_hppa_gen_reloc_type
55 #define hppa_gen_reloc_type _bfd_elf32_hppa_gen_reloc_type
58 /* ELF objects can have versions, but apparently do not have anywhere
59 to store a copyright string. */
60 #define obj_version obj_elf_version
61 #define obj_copyright obj_elf_version
63 #define UNWIND_SECTION_NAME ".PARISC.unwind"
67 /* Names of various debugging spaces/subspaces. */
68 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
69 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
70 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
71 #define UNWIND_SECTION_NAME "$UNWIND$"
73 /* Object file formats specify relocation types. */
74 typedef int reloc_type;
76 /* SOM objects can have both a version string and a copyright string. */
77 #define obj_version obj_som_version
78 #define obj_copyright obj_som_copyright
80 /* How to generate a relocation. */
81 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
83 /* Object file formats specify BFD symbol types. */
84 typedef som_symbol_type obj_symbol_type;
86 /* This apparently isn't in older versions of hpux reloc.h. */
88 #define R_DLT_REL 0x78
100 /* Various structures and types used internally in tc-hppa.c. */
102 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
106 unsigned int cannot_unwind:1;
107 unsigned int millicode:1;
108 unsigned int millicode_save_rest:1;
109 unsigned int region_desc:2;
110 unsigned int save_sr:2;
111 unsigned int entry_fr:4;
112 unsigned int entry_gr:5;
113 unsigned int args_stored:1;
114 unsigned int call_fr:5;
115 unsigned int call_gr:5;
116 unsigned int save_sp:1;
117 unsigned int save_rp:1;
118 unsigned int save_rp_in_frame:1;
119 unsigned int extn_ptr_defined:1;
120 unsigned int cleanup_defined:1;
122 unsigned int hpe_interrupt_marker:1;
123 unsigned int hpux_interrupt_marker:1;
124 unsigned int reserved:3;
125 unsigned int frame_size:27;
130 /* Starting and ending offsets of the region described by
132 unsigned int start_offset;
133 unsigned int end_offset;
134 struct unwind_desc descriptor;
137 /* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
138 control the entry and exit code they generate. It is also used in
139 creation of the correct stack unwind descriptors.
141 NOTE: GAS does not support .enter and .leave for the generation of
142 prologues and epilogues. FIXME.
144 The fields in structure roughly correspond to the arguments available on the
145 .callinfo pseudo-op. */
149 /* The unwind descriptor being built. */
150 struct unwind_table ci_unwind;
152 /* Name of this function. */
153 symbolS *start_symbol;
155 /* (temporary) symbol used to mark the end of this function. */
158 /* Next entry in the chain. */
159 struct call_info *ci_next;
162 /* Operand formats for FP instructions. Note not all FP instructions
163 allow all four formats to be used (for example fmpysub only allows
167 SGL, DBL, ILLEGAL_FMT, QUAD, W, UW, DW, UDW, QW, UQW
171 /* This fully describes the symbol types which may be attached to
172 an EXPORT or IMPORT directive. Only SOM uses this formation
173 (ELF has no need for it). */
177 SYMBOL_TYPE_ABSOLUTE,
181 SYMBOL_TYPE_MILLICODE,
183 SYMBOL_TYPE_PRI_PROG,
184 SYMBOL_TYPE_SEC_PROG,
188 /* This structure contains information needed to assemble
189 individual instructions. */
192 /* Holds the opcode after parsing by pa_ip. */
193 unsigned long opcode;
195 /* Holds an expression associated with the current instruction. */
198 /* Does this instruction use PC-relative addressing. */
201 /* Floating point formats for operand1 and operand2. */
202 fp_operand_format fpof1;
203 fp_operand_format fpof2;
206 /* Holds the field selector for this instruction
207 (for example L%, LR%, etc). */
210 /* Holds any argument relocation bits associated with this
211 instruction. (instruction should be some sort of call). */
214 /* The format specification for this instruction. */
217 /* The relocation (if any) associated with this instruction. */
221 /* PA-89 floating point registers are arranged like this:
224 +--------------+--------------+
225 | 0 or 16L | 16 or 16R |
226 +--------------+--------------+
227 | 1 or 17L | 17 or 17R |
228 +--------------+--------------+
236 +--------------+--------------+
237 | 14 or 30L | 30 or 30R |
238 +--------------+--------------+
239 | 15 or 31L | 31 or 31R |
240 +--------------+--------------+
243 The following is a version of pa_parse_number that
244 handles the L/R notation and returns the correct
245 value to put into the instruction register field.
246 The correct value to put into the instruction is
247 encoded in the structure 'pa_11_fp_reg_struct'. */
249 struct pa_11_fp_reg_struct
251 /* The register number. */
258 /* Additional information needed to build argument relocation stubs. */
261 /* The argument relocation specification. */
262 unsigned int arg_reloc;
264 /* Number of arguments. */
265 unsigned int arg_count;
269 /* This structure defines an entry in the subspace dictionary
272 struct subspace_dictionary_chain
274 /* Nonzero if this space has been defined by the user code. */
275 unsigned int ssd_defined;
277 /* Name of this subspace. */
280 /* GAS segment and subsegment associated with this subspace. */
284 /* Next space in the subspace dictionary chain. */
285 struct subspace_dictionary_chain *ssd_next;
288 typedef struct subspace_dictionary_chain ssd_chain_struct;
290 /* This structure defines an entry in the subspace dictionary
293 struct space_dictionary_chain
295 /* Nonzero if this space has been defined by the user code or
296 as a default space. */
297 unsigned int sd_defined;
299 /* Nonzero if this spaces has been defined by the user code. */
300 unsigned int sd_user_defined;
302 /* The space number (or index). */
303 unsigned int sd_spnum;
305 /* The name of this subspace. */
308 /* GAS segment to which this subspace corresponds. */
311 /* Current subsegment number being used. */
314 /* The chain of subspaces contained within this space. */
315 ssd_chain_struct *sd_subspaces;
317 /* The next entry in the space dictionary chain. */
318 struct space_dictionary_chain *sd_next;
321 typedef struct space_dictionary_chain sd_chain_struct;
323 /* This structure defines attributes of the default subspace
324 dictionary entries. */
326 struct default_subspace_dict
328 /* Name of the subspace. */
331 /* FIXME. Is this still needed? */
334 /* Nonzero if this subspace is loadable. */
337 /* Nonzero if this subspace contains only code. */
340 /* Nonzero if this is a common subspace. */
343 /* Nonzero if this is a common subspace which allows symbols
344 to be multiply defined. */
347 /* Nonzero if this subspace should be zero filled. */
350 /* Sort key for this subspace. */
353 /* Access control bits for this subspace. Can represent RWX access
354 as well as privilege level changes for gateways. */
357 /* Index of containing space. */
360 /* Alignment (in bytes) of this subspace. */
363 /* Quadrant within space where this subspace should be loaded. */
366 /* An index into the default spaces array. */
369 /* Subsegment associated with this subspace. */
373 /* This structure defines attributes of the default space
374 dictionary entries. */
376 struct default_space_dict
378 /* Name of the space. */
381 /* Space number. It is possible to identify spaces within
382 assembly code numerically! */
385 /* Nonzero if this space is loadable. */
388 /* Nonzero if this space is "defined". FIXME is still needed */
391 /* Nonzero if this space can not be shared. */
394 /* Sort key for this space. */
397 /* Segment associated with this space. */
402 /* Structure for previous label tracking. Needed so that alignments,
403 callinfo declarations, etc can be easily attached to a particular
405 typedef struct label_symbol_struct
407 struct symbol *lss_label;
409 sd_chain_struct *lss_space;
414 struct label_symbol_struct *lss_next;
418 /* Extra information needed to perform fixups (relocations) on the PA. */
419 struct hppa_fix_struct
421 /* The field selector. */
422 enum hppa_reloc_field_selector_type_alt fx_r_field;
427 /* Format of fixup. */
430 /* Argument relocation bits. */
433 /* The segment this fixup appears in. */
437 /* Structure to hold information about predefined registers. */
445 /* This structure defines the mapping from a FP condition string
446 to a condition number which can be recorded in an instruction. */
453 /* This structure defines a mapping from a field selector
454 string to a field selector type. */
455 struct selector_entry
461 /* Prototypes for functions local to tc-hppa.c. */
464 static void pa_check_current_space_and_subspace PARAMS ((void));
467 static fp_operand_format pa_parse_fp_format PARAMS ((char **s));
468 static void pa_cons PARAMS ((int));
469 static void pa_data PARAMS ((int));
470 static void pa_float_cons PARAMS ((int));
471 static void pa_fill PARAMS ((int));
472 static void pa_lcomm PARAMS ((int));
473 static void pa_lsym PARAMS ((int));
474 static void pa_stringer PARAMS ((int));
475 static void pa_text PARAMS ((int));
476 static void pa_version PARAMS ((int));
477 static int pa_parse_fp_cmp_cond PARAMS ((char **));
478 static int get_expression PARAMS ((char *));
479 static int pa_get_absolute_expression PARAMS ((struct pa_it *, char **));
480 static int evaluate_absolute PARAMS ((struct pa_it *));
481 static unsigned int pa_build_arg_reloc PARAMS ((char *));
482 static unsigned int pa_align_arg_reloc PARAMS ((unsigned int, unsigned int));
483 static int pa_parse_nullif PARAMS ((char **));
484 static int pa_parse_nonneg_cmpsub_cmpltr PARAMS ((char **, int));
485 static int pa_parse_neg_cmpsub_cmpltr PARAMS ((char **, int));
486 static int pa_parse_neg_add_cmpltr PARAMS ((char **, int));
487 static int pa_parse_nonneg_add_cmpltr PARAMS ((char **, int));
488 static void pa_block PARAMS ((int));
489 static void pa_brtab PARAMS ((int));
490 static void pa_try PARAMS ((int));
491 static void pa_call PARAMS ((int));
492 static void pa_call_args PARAMS ((struct call_desc *));
493 static void pa_callinfo PARAMS ((int));
494 static void pa_code PARAMS ((int));
495 static void pa_comm PARAMS ((int));
496 static void pa_copyright PARAMS ((int));
497 static void pa_end PARAMS ((int));
498 static void pa_enter PARAMS ((int));
499 static void pa_entry PARAMS ((int));
500 static void pa_equ PARAMS ((int));
501 static void pa_exit PARAMS ((int));
502 static void pa_export PARAMS ((int));
503 static void pa_type_args PARAMS ((symbolS *, int));
504 static void pa_import PARAMS ((int));
505 static void pa_label PARAMS ((int));
506 static void pa_leave PARAMS ((int));
507 static void pa_level PARAMS ((int));
508 static void pa_origin PARAMS ((int));
509 static void pa_proc PARAMS ((int));
510 static void pa_procend PARAMS ((int));
511 static void pa_param PARAMS ((int));
512 static void pa_undefine_label PARAMS ((void));
513 static int need_pa11_opcode PARAMS ((struct pa_it *,
514 struct pa_11_fp_reg_struct *));
515 static int pa_parse_number PARAMS ((char **, struct pa_11_fp_reg_struct *));
516 static label_symbol_struct *pa_get_label PARAMS ((void));
518 static void pa_compiler PARAMS ((int));
519 static void pa_align PARAMS ((int));
520 static void pa_space PARAMS ((int));
521 static void pa_spnum PARAMS ((int));
522 static void pa_subspace PARAMS ((int));
523 static sd_chain_struct *create_new_space PARAMS ((char *, int, int,
526 static ssd_chain_struct *create_new_subspace PARAMS ((sd_chain_struct *,
531 static ssd_chain_struct *update_subspace PARAMS ((sd_chain_struct *,
532 char *, int, int, int,
536 static sd_chain_struct *is_defined_space PARAMS ((char *));
537 static ssd_chain_struct *is_defined_subspace PARAMS ((char *));
538 static sd_chain_struct *pa_segment_to_space PARAMS ((asection *));
539 static ssd_chain_struct *pa_subsegment_to_subspace PARAMS ((asection *,
541 static sd_chain_struct *pa_find_space_by_number PARAMS ((int));
542 static unsigned int pa_subspace_start PARAMS ((sd_chain_struct *, int));
543 static sd_chain_struct *pa_parse_space_stmt PARAMS ((char *, int));
544 static int pa_next_subseg PARAMS ((sd_chain_struct *));
545 static void pa_spaces_begin PARAMS ((void));
547 static void pa_ip PARAMS ((char *));
548 static void fix_new_hppa PARAMS ((fragS *, int, int, symbolS *,
549 long, expressionS *, int,
550 bfd_reloc_code_real_type,
551 enum hppa_reloc_field_selector_type_alt,
553 static int is_end_of_statement PARAMS ((void));
554 static int reg_name_search PARAMS ((char *));
555 static int pa_chk_field_selector PARAMS ((char **));
556 static int is_same_frag PARAMS ((fragS *, fragS *));
557 static void process_exit PARAMS ((void));
558 static int log2 PARAMS ((int));
559 static unsigned int pa_stringer_aux PARAMS ((char *));
562 static void hppa_elf_mark_end_of_function PARAMS ((void));
563 static void pa_build_unwind_subspace PARAMS ((struct call_info *));
566 /* File and gloally scoped variable declarations. */
569 /* Root and final entry in the space chain. */
570 static sd_chain_struct *space_dict_root;
571 static sd_chain_struct *space_dict_last;
573 /* The current space and subspace. */
574 static sd_chain_struct *current_space;
575 static ssd_chain_struct *current_subspace;
578 /* Root of the call_info chain. */
579 static struct call_info *call_info_root;
581 /* The last call_info (for functions) structure
582 seen so it can be associated with fixups and
584 static struct call_info *last_call_info;
586 /* The last call description (for actual calls). */
587 static struct call_desc last_call_desc;
589 /* handle of the OPCODE hash table */
590 static struct hash_control *op_hash = NULL;
592 /* This array holds the chars that always start a comment. If the
593 pre-processor is disabled, these aren't very useful. */
594 const char comment_chars[] = ";";
596 /* Table of pseudo ops for the PA. FIXME -- how many of these
597 are now redundant with the overall GAS and the object file
599 const pseudo_typeS md_pseudo_table[] =
601 /* align pseudo-ops on the PA specify the actual alignment requested,
602 not the log2 of the requested alignment. */
604 {"align", pa_align, 8},
607 {"align", s_align_bytes, 8},
609 {"begin_brtab", pa_brtab, 1},
610 {"begin_try", pa_try, 1},
611 {"block", pa_block, 1},
612 {"blockz", pa_block, 0},
613 {"byte", pa_cons, 1},
614 {"call", pa_call, 0},
615 {"callinfo", pa_callinfo, 0},
616 {"code", pa_code, 0},
617 {"comm", pa_comm, 0},
619 {"compiler", pa_compiler, 0},
621 {"copyright", pa_copyright, 0},
622 {"data", pa_data, 0},
623 {"double", pa_float_cons, 'd'},
624 {"dword", pa_cons, 8},
626 {"end_brtab", pa_brtab, 0},
627 {"end_try", pa_try, 0},
628 {"enter", pa_enter, 0},
629 {"entry", pa_entry, 0},
631 {"exit", pa_exit, 0},
632 {"export", pa_export, 0},
633 {"fill", pa_fill, 0},
634 {"float", pa_float_cons, 'f'},
635 {"half", pa_cons, 2},
636 {"import", pa_import, 0},
638 {"label", pa_label, 0},
639 {"lcomm", pa_lcomm, 0},
640 {"leave", pa_leave, 0},
641 {"level", pa_level, 0},
642 {"long", pa_cons, 4},
643 {"lsym", pa_lsym, 0},
645 {"nsubspa", pa_subspace, 1},
647 {"octa", pa_cons, 16},
648 {"org", pa_origin, 0},
649 {"origin", pa_origin, 0},
650 {"param", pa_param, 0},
651 {"proc", pa_proc, 0},
652 {"procend", pa_procend, 0},
653 {"quad", pa_cons, 8},
655 {"short", pa_cons, 2},
656 {"single", pa_float_cons, 'f'},
658 {"space", pa_space, 0},
659 {"spnum", pa_spnum, 0},
661 {"string", pa_stringer, 0},
662 {"stringz", pa_stringer, 1},
664 {"subspa", pa_subspace, 0},
666 {"text", pa_text, 0},
667 {"version", pa_version, 0},
668 {"word", pa_cons, 4},
672 /* This array holds the chars that only start a comment at the beginning of
673 a line. If the line seems to have the form '# 123 filename'
674 .line and .file directives will appear in the pre-processed output.
676 Note that input_file.c hand checks for '#' at the beginning of the
677 first line of the input file. This is because the compiler outputs
678 #NO_APP at the beginning of its output.
680 Also note that C style comments will always work. */
681 const char line_comment_chars[] = "#";
683 /* This array holds the characters which act as line separators. */
684 const char line_separator_chars[] = "!";
686 /* Chars that can be used to separate mant from exp in floating point nums. */
687 const char EXP_CHARS[] = "eE";
689 /* Chars that mean this number is a floating point constant.
690 As in 0f12.456 or 0d1.2345e12.
692 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
693 changed in read.c. Ideally it shouldn't hae to know abou it at
694 all, but nothing is ideal around here. */
695 const char FLT_CHARS[] = "rRsSfFdDxXpP";
697 static struct pa_it the_insn;
699 /* Points to the end of an expression just parsed by get_expressoin
700 and friends. FIXME. This shouldn't be handled with a file-global
702 static char *expr_end;
704 /* Nonzero if a .callinfo appeared within the current procedure. */
705 static int callinfo_found;
707 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
708 static int within_entry_exit;
710 /* Nonzero if the assembler is currently within a procedure definition. */
711 static int within_procedure;
713 /* Handle on strucutre which keep track of the last symbol
714 seen in each subspace. */
715 static label_symbol_struct *label_symbols_rootp = NULL;
717 /* Holds the last field selector. */
718 static int hppa_field_selector;
721 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
722 static symbolS *dummy_symbol;
725 /* Nonzero if errors are to be printed. */
726 static int print_errors = 1;
728 /* List of registers that are pre-defined:
730 Each general register has one predefined name of the form
731 %r<REGNUM> which has the value <REGNUM>.
733 Space and control registers are handled in a similar manner,
734 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
736 Likewise for the floating point registers, but of the form
737 %fr<REGNUM>. Floating point registers have additional predefined
738 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
739 again have the value <REGNUM>.
741 Many registers also have synonyms:
743 %r26 - %r23 have %arg0 - %arg3 as synonyms
744 %r28 - %r29 have %ret0 - %ret1 as synonyms
745 %r30 has %sp as a synonym
746 %r27 has %dp as a synonym
747 %r2 has %rp as a synonym
749 Almost every control register has a synonym; they are not listed
752 The table is sorted. Suitable for searching by a binary search. */
754 static const struct pd_reg pre_defined_registers[] =
954 /* This table is sorted by order of the length of the string. This is
955 so we check for <> before we check for <. If we had a <> and checked
956 for < first, we would get a false match. */
957 static const struct fp_cond_map fp_cond_map[] =
993 static const struct selector_entry selector_table[] =
1018 /* default space and subspace dictionaries */
1020 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1021 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1023 /* pre-defined subsegments (subspaces) for the HPPA. */
1024 #define SUBSEG_CODE 0
1025 #define SUBSEG_LIT 1
1026 #define SUBSEG_MILLI 2
1027 #define SUBSEG_DATA 0
1028 #define SUBSEG_BSS 2
1029 #define SUBSEG_UNWIND 3
1030 #define SUBSEG_GDB_STRINGS 0
1031 #define SUBSEG_GDB_SYMBOLS 1
1033 static struct default_subspace_dict pa_def_subspaces[] =
1035 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, SUBSEG_CODE},
1036 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, SUBSEG_DATA},
1037 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, SUBSEG_LIT},
1038 {"$MILLICODE$", 1, 1, 0, 0, 0, 0, 8, 0x2c, 0, 8, 0, 0, SUBSEG_MILLI},
1039 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, SUBSEG_BSS},
1040 {NULL, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1043 static struct default_space_dict pa_def_spaces[] =
1045 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL},
1046 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL},
1047 {NULL, 0, 0, 0, 0, 0, ASEC_NULL}
1050 /* Misc local definitions used by the assembler. */
1052 /* These macros are used to maintain spaces/subspaces. */
1053 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1054 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1055 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1056 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1058 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1059 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1062 /* Return nonzero if the string pointed to by S potentially represents
1063 a right or left half of a FP register */
1064 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1065 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1067 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1068 main loop after insertion. */
1070 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1072 ((OPCODE) |= (FIELD) << (START)); \
1076 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1077 IGNORE is used to suppress the error message. */
1079 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1081 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1084 as_bad (_("Field out of range [%d..%d] (%d)."), (LOW), (HIGH), \
1090 #define is_DP_relative(exp) \
1091 ((exp).X_op == O_subtract \
1092 && strcmp (S_GET_NAME ((exp).X_op_symbol), "$global$") == 0)
1094 #define is_PC_relative(exp) \
1095 ((exp).X_op == O_subtract \
1096 && strcmp (S_GET_NAME ((exp).X_op_symbol), "$PIC_pcrel$0") == 0)
1098 /* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll
1099 always be able to reduce the expression to a constant, so we don't
1100 need real complex handling yet. */
1101 #define is_complex(exp) \
1102 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1104 /* Actual functions to implement the PA specific code for the assembler. */
1106 /* Called before writing the object file. Make sure entry/exit and
1107 proc/procend pairs match. */
1112 if (within_entry_exit)
1113 as_fatal (_("Missing .exit\n"));
1115 if (within_procedure)
1116 as_fatal (_("Missing .procend\n"));
1119 /* Returns a pointer to the label_symbol_struct for the current space.
1120 or NULL if no label_symbol_struct exists for the current space. */
1122 static label_symbol_struct *
1125 label_symbol_struct *label_chain;
1127 for (label_chain = label_symbols_rootp;
1129 label_chain = label_chain->lss_next)
1132 if (current_space == label_chain->lss_space && label_chain->lss_label)
1136 if (now_seg == label_chain->lss_segment && label_chain->lss_label)
1144 /* Defines a label for the current space. If one is already defined,
1145 this function will replace it with the new label. */
1148 pa_define_label (symbol)
1151 label_symbol_struct *label_chain = pa_get_label ();
1154 label_chain->lss_label = symbol;
1157 /* Create a new label entry and add it to the head of the chain. */
1159 = (label_symbol_struct *) xmalloc (sizeof (label_symbol_struct));
1160 label_chain->lss_label = symbol;
1162 label_chain->lss_space = current_space;
1165 label_chain->lss_segment = now_seg;
1167 label_chain->lss_next = NULL;
1169 if (label_symbols_rootp)
1170 label_chain->lss_next = label_symbols_rootp;
1172 label_symbols_rootp = label_chain;
1176 /* Removes a label definition for the current space.
1177 If there is no label_symbol_struct entry, then no action is taken. */
1180 pa_undefine_label ()
1182 label_symbol_struct *label_chain;
1183 label_symbol_struct *prev_label_chain = NULL;
1185 for (label_chain = label_symbols_rootp;
1187 label_chain = label_chain->lss_next)
1191 && current_space == label_chain->lss_space && label_chain->lss_label
1194 && now_seg == label_chain->lss_segment && label_chain->lss_label
1198 /* Remove the label from the chain and free its memory. */
1199 if (prev_label_chain)
1200 prev_label_chain->lss_next = label_chain->lss_next;
1202 label_symbols_rootp = label_chain->lss_next;
1207 prev_label_chain = label_chain;
1212 /* An HPPA-specific version of fix_new. This is required because the HPPA
1213 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1214 results in the creation of an instance of an hppa_fix_struct. An
1215 hppa_fix_struct stores the extra information along with a pointer to the
1216 original fixS. This is attached to the original fixup via the
1217 tc_fix_data field. */
1220 fix_new_hppa (frag, where, size, add_symbol, offset, exp, pcrel,
1221 r_type, r_field, r_format, arg_reloc, unwind_bits)
1225 symbolS *add_symbol;
1229 bfd_reloc_code_real_type r_type;
1230 enum hppa_reloc_field_selector_type_alt r_field;
1237 struct hppa_fix_struct *hppa_fix = (struct hppa_fix_struct *)
1238 obstack_alloc (¬es, sizeof (struct hppa_fix_struct));
1241 new_fix = fix_new_exp (frag, where, size, exp, pcrel, r_type);
1243 new_fix = fix_new (frag, where, size, add_symbol, offset, pcrel, r_type);
1244 new_fix->tc_fix_data = (void *) hppa_fix;
1245 hppa_fix->fx_r_type = r_type;
1246 hppa_fix->fx_r_field = r_field;
1247 hppa_fix->fx_r_format = r_format;
1248 hppa_fix->fx_arg_reloc = arg_reloc;
1249 hppa_fix->segment = now_seg;
1251 if (r_type == R_ENTRY || r_type == R_EXIT)
1252 new_fix->fx_offset = *unwind_bits;
1255 /* foo-$global$ is used to access non-automatic storage. $global$
1256 is really just a marker and has served its purpose, so eliminate
1257 it now so as not to confuse write.c. */
1258 if (new_fix->fx_subsy
1259 && !strcmp (S_GET_NAME (new_fix->fx_subsy), "$global$"))
1260 new_fix->fx_subsy = NULL;
1263 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1264 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1267 parse_cons_expression_hppa (exp)
1270 hppa_field_selector = pa_chk_field_selector (&input_line_pointer);
1274 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1275 hppa_field_selector is set by the parse_cons_expression_hppa. */
1278 cons_fix_new_hppa (frag, where, size, exp)
1284 unsigned int rel_type;
1286 /* Get a base relocation type. */
1287 if (is_DP_relative (*exp))
1288 rel_type = R_HPPA_GOTOFF;
1289 else if (is_complex (*exp))
1290 rel_type = R_HPPA_COMPLEX;
1294 if (hppa_field_selector != e_psel && hppa_field_selector != e_fsel)
1295 as_warn (_("Invalid field selector. Assuming F%%."));
1297 fix_new_hppa (frag, where, size,
1298 (symbolS *) NULL, (offsetT) 0, exp, 0, rel_type,
1299 hppa_field_selector, size * 8, 0, NULL);
1301 /* Reset field selector to its default state. */
1302 hppa_field_selector = 0;
1305 /* This function is called once, at assembler startup time. It should
1306 set up all the tables, etc. that the MD part of the assembler will need. */
1311 const char *retval = NULL;
1315 last_call_info = NULL;
1316 call_info_root = NULL;
1318 /* Set the default machine type. */
1319 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10))
1320 as_warn (_("could not set architecture and machine"));
1322 /* Folding of text and data segments fails miserably on the PA.
1323 Warn user and disable "-R" option. */
1324 if (flag_readonly_data_in_text)
1326 as_warn (_("-R option not supported on this target."));
1327 flag_readonly_data_in_text = 0;
1334 op_hash = hash_new ();
1336 while (i < NUMOPCODES)
1338 const char *name = pa_opcodes[i].name;
1339 retval = hash_insert (op_hash, name, (struct pa_opcode *) &pa_opcodes[i]);
1340 if (retval != NULL && *retval != '\0')
1342 as_fatal (_("Internal error: can't hash `%s': %s\n"), name, retval);
1347 if ((pa_opcodes[i].match & pa_opcodes[i].mask)
1348 != pa_opcodes[i].match)
1350 fprintf (stderr, _("internal error: losing opcode: `%s' \"%s\"\n"),
1351 pa_opcodes[i].name, pa_opcodes[i].args);
1356 while (i < NUMOPCODES && !strcmp (pa_opcodes[i].name, name));
1360 as_fatal (_("Broken assembler. No assembly attempted."));
1363 /* SOM will change text_section. To make sure we never put
1364 anything into the old one switch to the new one now. */
1365 subseg_set (text_section, 0);
1369 dummy_symbol = symbol_find_or_make ("L$dummy");
1370 S_SET_SEGMENT (dummy_symbol, text_section);
1371 /* Force the symbol to be converted to a real symbol. */
1372 (void) symbol_get_bfdsym (dummy_symbol);
1376 /* Assemble a single instruction storing it into a frag. */
1383 /* The had better be something to assemble. */
1386 /* If we are within a procedure definition, make sure we've
1387 defined a label for the procedure; handle case where the
1388 label was defined after the .PROC directive.
1390 Note there's not need to diddle with the segment or fragment
1391 for the label symbol in this case. We have already switched
1392 into the new $CODE$ subspace at this point. */
1393 if (within_procedure && last_call_info->start_symbol == NULL)
1395 label_symbol_struct *label_symbol = pa_get_label ();
1399 if (label_symbol->lss_label)
1401 last_call_info->start_symbol = label_symbol->lss_label;
1402 symbol_get_bfdsym (label_symbol->lss_label)->flags
1405 /* Also handle allocation of a fixup to hold the unwind
1406 information when the label appears after the proc/procend. */
1407 if (within_entry_exit)
1409 char *where = frag_more (0);
1411 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
1412 NULL, (offsetT) 0, NULL,
1413 0, R_HPPA_ENTRY, e_fsel, 0, 0,
1414 (int *)&last_call_info->ci_unwind.descriptor);
1419 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
1422 as_bad (_("Missing function name for .PROC"));
1425 /* Assemble the instruction. Results are saved into "the_insn". */
1428 /* Get somewhere to put the assembled instrution. */
1431 /* Output the opcode. */
1432 md_number_to_chars (to, the_insn.opcode, 4);
1434 /* If necessary output more stuff. */
1435 if (the_insn.reloc != R_HPPA_NONE)
1436 fix_new_hppa (frag_now, (to - frag_now->fr_literal), 4, NULL,
1437 (offsetT) 0, &the_insn.exp, the_insn.pcrel,
1438 the_insn.reloc, the_insn.field_selector,
1439 the_insn.format, the_insn.arg_reloc, NULL);
1442 /* Do the real work for assembling a single instruction. Store results
1443 into the global "the_insn" variable. */
1449 char *error_message = "";
1450 char *s, c, *argstart, *name, *save_s;
1454 int cmpltr, nullif, flag, cond, num;
1455 unsigned long opcode;
1456 struct pa_opcode *insn;
1459 /* We must have a valid space and subspace. */
1460 pa_check_current_space_and_subspace ();
1463 /* Convert everything up to the first whitespace character into lower
1465 for (s = str; *s != ' ' && *s != '\t' && *s != '\n' && *s != '\0'; s++)
1469 /* Skip to something interesting. */
1470 for (s = str; isupper (*s) || islower (*s) || (*s >= '0' && *s <= '3'); ++s)
1489 as_fatal (_("Unknown opcode: `%s'"), str);
1494 /* Look up the opcode in the has table. */
1495 if ((insn = (struct pa_opcode *) hash_find (op_hash, str)) == NULL)
1497 as_bad ("Unknown opcode: `%s'", str);
1506 /* Mark the location where arguments for the instruction start, then
1507 start processing them. */
1511 /* Do some initialization. */
1512 opcode = insn->match;
1513 memset (&the_insn, 0, sizeof (the_insn));
1515 the_insn.reloc = R_HPPA_NONE;
1517 /* If this instruction is specific to a particular architecture,
1518 then set a new architecture. */
1519 /* But do not automatically promote to pa2.0. The automatic promotion
1520 crud is for compatability with HP's old assemblers only. */
1522 && bfd_get_mach (stdoutput) < insn->arch)
1524 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, insn->arch))
1525 as_warn (_("could not update architecture and machine"));
1527 else if (bfd_get_mach (stdoutput) < insn->arch)
1533 /* Build the opcode, checking as we go to make
1534 sure that the operands match. */
1535 for (args = insn->args;; ++args)
1540 /* End of arguments. */
1556 /* These must match exactly. */
1565 /* Handle a 5 bit register or control register field at 10. */
1568 num = pa_parse_number (&s, 0);
1569 CHECK_FIELD (num, 31, 0, 0);
1570 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
1572 /* Handle %sar or %cr11. No bits get set, we just verify that it
1575 /* Skip whitespace before register. */
1576 while (*s == ' ' || *s == '\t')
1579 if (!strncasecmp(s, "%sar", 4))
1584 else if (!strncasecmp(s, "%cr11", 5))
1591 /* Handle a 5 bit register field at 15. */
1593 num = pa_parse_number (&s, 0);
1594 CHECK_FIELD (num, 31, 0, 0);
1595 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1597 /* Handle a 5 bit register field at 31. */
1600 num = pa_parse_number (&s, 0);
1601 CHECK_FIELD (num, 31, 0, 0);
1602 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1604 /* Handle a 5 bit field length at 31. */
1606 num = pa_get_absolute_expression (&the_insn, &s);
1608 CHECK_FIELD (num, 32, 1, 0);
1609 INSERT_FIELD_AND_CONTINUE (opcode, 32 - num, 0);
1611 /* Handle a 5 bit immediate at 15. */
1613 num = pa_get_absolute_expression (&the_insn, &s);
1615 CHECK_FIELD (num, 15, -16, 0);
1616 low_sign_unext (num, 5, &num);
1617 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1619 /* Handle a 5 bit immediate at 31. */
1621 num = pa_get_absolute_expression (&the_insn, &s);
1623 CHECK_FIELD (num, 15, -16, 0)
1624 low_sign_unext (num, 5, &num);
1625 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1627 /* Handle an unsigned 5 bit immediate at 31. */
1629 num = pa_get_absolute_expression (&the_insn, &s);
1631 CHECK_FIELD (num, 31, 0, 0);
1632 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1634 /* Handle an unsigned 5 bit immediate at 15. */
1636 num = pa_get_absolute_expression (&the_insn, &s);
1638 CHECK_FIELD (num, 31, 0, 0);
1639 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1641 /* Handle a 2 bit space identifier at 17. */
1643 num = pa_parse_number (&s, 0);
1644 CHECK_FIELD (num, 3, 0, 1);
1645 INSERT_FIELD_AND_CONTINUE (opcode, num, 14);
1647 /* Handle a 3 bit space identifier at 18. */
1649 num = pa_parse_number (&s, 0);
1650 CHECK_FIELD (num, 7, 0, 1);
1651 dis_assemble_3 (num, &num);
1652 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
1654 /* Handle a completer for an indexing load or store. */
1660 while (*s == ',' && i < 2)
1663 if (strncasecmp (s, "sm", 2) == 0)
1670 else if (strncasecmp (s, "m", 1) == 0)
1672 else if (strncasecmp (s, "s", 1) == 0)
1675 as_bad (_("Invalid Indexed Load Completer."));
1680 as_bad (_("Invalid Indexed Load Completer Syntax."));
1682 INSERT_FIELD_AND_CONTINUE (opcode, uu, 13);
1685 /* Handle a short load/store completer. */
1693 if (strncasecmp (s, "ma", 2) == 0)
1698 else if (strncasecmp (s, "mb", 2) == 0)
1704 as_bad (_("Invalid Short Load/Store Completer."));
1711 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1715 /* Handle a stbys completer. */
1721 while (*s == ',' && i < 2)
1724 if (strncasecmp (s, "m", 1) == 0)
1726 else if (strncasecmp (s, "b", 1) == 0)
1728 else if (strncasecmp (s, "e", 1) == 0)
1731 as_bad (_("Invalid Store Bytes Short Completer"));
1736 as_bad (_("Invalid Store Bytes Short Completer"));
1738 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1741 /* Handle all conditions. */
1747 /* Handle FP compare conditions. */
1749 cond = pa_parse_fp_cmp_cond (&s);
1750 INSERT_FIELD_AND_CONTINUE (opcode, cond, 0);
1752 /* Handle an add condition. */
1761 /* 64 bit conditions. */
1771 while (*s != ',' && *s != ' ' && *s != '\t')
1775 if (strcmp (name, "=") == 0)
1777 else if (strcmp (name, "<") == 0)
1779 else if (strcmp (name, "<=") == 0)
1781 else if (strcasecmp (name, "nuv") == 0)
1783 else if (strcasecmp (name, "znv") == 0)
1785 else if (strcasecmp (name, "sv") == 0)
1787 else if (strcasecmp (name, "od") == 0)
1789 else if (strcasecmp (name, "tr") == 0)
1794 else if (strcmp (name, "<>") == 0)
1799 else if (strcmp (name, ">=") == 0)
1804 else if (strcmp (name, ">") == 0)
1809 else if (strcasecmp (name, "uv") == 0)
1814 else if (strcasecmp (name, "vnz") == 0)
1819 else if (strcasecmp (name, "nsv") == 0)
1824 else if (strcasecmp (name, "ev") == 0)
1829 /* ",*" is a valid condition. */
1830 else if (*args == 'a')
1831 as_bad (_("Invalid Add Condition: %s"), name);
1834 opcode |= cmpltr << 13;
1835 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
1837 /* Handle non-negated add and branch condition. */
1839 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
1842 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s);
1845 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
1847 /* Handle negated add and branch condition. */
1851 /* Handle wide-mode non-negated add and branch condition. */
1855 /* Handle wide-mode negated add and branch condition. */
1859 /* Handle a negated or non-negated add and branch
1863 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
1867 cmpltr = pa_parse_neg_add_cmpltr (&s, 1);
1870 as_bad (_("Invalid Compare/Subtract Condition"));
1875 /* Negated condition requires an opcode change. */
1879 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
1881 /* Handle branch on bit conditions. */
1897 if (strncmp (s, "<", 1) == 0)
1902 else if (strncmp (s, ">=", 2) == 0)
1908 as_bad (_("Invalid Bit Branch Condition: %c"), *s);
1910 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 15);
1912 /* Handle a compare/subtract condition. */
1921 /* 64 bit conditions. */
1931 while (*s != ',' && *s != ' ' && *s != '\t')
1935 if (strcmp (name, "=") == 0)
1937 else if (strcmp (name, "<") == 0)
1939 else if (strcmp (name, "<=") == 0)
1941 else if (strcasecmp (name, "<<") == 0)
1943 else if (strcasecmp (name, "<<=") == 0)
1945 else if (strcasecmp (name, "sv") == 0)
1947 else if (strcasecmp (name, "od") == 0)
1949 else if (strcasecmp (name, "tr") == 0)
1954 else if (strcmp (name, "<>") == 0)
1959 else if (strcmp (name, ">=") == 0)
1964 else if (strcmp (name, ">") == 0)
1969 else if (strcasecmp (name, ">>=") == 0)
1974 else if (strcasecmp (name, ">>") == 0)
1979 else if (strcasecmp (name, "nsv") == 0)
1984 else if (strcasecmp (name, "ev") == 0)
1989 /* ",*" is a valid condition. */
1990 else if (*args != 'S')
1991 as_bad (_("Invalid Compare/Subtract Condition: %s"),
1995 opcode |= cmpltr << 13;
1996 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
1998 /* Handle a non-negated compare condition. */
2000 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
2003 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s);
2006 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2008 /* Handle a negated compare condition. */
2012 /* Handle a 64 bit non-negated compare condition. */
2016 /* Handle a 64 bit negated compare condition. */
2020 /* Handle a 64 bit cmpib condition. */
2024 /* Handle a negated or non-negated compare/subtract
2028 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
2032 cmpltr = pa_parse_neg_cmpsub_cmpltr (&s, 1);
2035 as_bad (_("Invalid Compare/Subtract Condition."));
2040 /* Negated condition requires an opcode change. */
2045 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2047 /* Handle a logical instruction condition. */
2056 /* 64 bit conditions. */
2066 while (*s != ',' && *s != ' ' && *s != '\t')
2072 if (strcmp (name, "=") == 0)
2074 else if (strcmp (name, "<") == 0)
2076 else if (strcmp (name, "<=") == 0)
2078 else if (strcasecmp (name, "od") == 0)
2080 else if (strcasecmp (name, "tr") == 0)
2085 else if (strcmp (name, "<>") == 0)
2090 else if (strcmp (name, ">=") == 0)
2095 else if (strcmp (name, ">") == 0)
2100 else if (strcasecmp (name, "ev") == 0)
2105 /* ",*" is a valid condition. */
2106 else if (*args != 'L')
2107 as_bad (_("Invalid Logical Instruction Condition."));
2110 opcode |= cmpltr << 13;
2111 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2113 /* Handle a shift/extract/deposit condition. */
2122 /* 64 bit conditions. */
2132 while (*s != ',' && *s != ' ' && *s != '\t')
2136 if (strcmp (name, "=") == 0)
2138 else if (strcmp (name, "<") == 0)
2140 else if (strcasecmp (name, "od") == 0)
2142 else if (strcasecmp (name, "tr") == 0)
2144 else if (strcmp (name, "<>") == 0)
2146 else if (strcmp (name, ">=") == 0)
2148 else if (strcasecmp (name, "ev") == 0)
2150 /* Handle movb,n. Put things back the way they were.
2151 This includes moving s back to where it started. */
2152 else if (strcasecmp (name, "n") == 0 && *args == 'y')
2158 /* ",*" is a valid condition. */
2159 else if (*args != 'X')
2160 as_bad (_("Invalid Shift/Extract/Deposit Condition."));
2163 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2165 /* Handle a unit instruction condition. */
2174 /* 64 bit conditions. */
2183 if (strncasecmp (s, "sbz", 3) == 0)
2188 else if (strncasecmp (s, "shz", 3) == 0)
2193 else if (strncasecmp (s, "sdc", 3) == 0)
2198 else if (strncasecmp (s, "sbc", 3) == 0)
2203 else if (strncasecmp (s, "shc", 3) == 0)
2208 else if (strncasecmp (s, "tr", 2) == 0)
2214 else if (strncasecmp (s, "nbz", 3) == 0)
2220 else if (strncasecmp (s, "nhz", 3) == 0)
2226 else if (strncasecmp (s, "ndc", 3) == 0)
2232 else if (strncasecmp (s, "nbc", 3) == 0)
2238 else if (strncasecmp (s, "nhc", 3) == 0)
2244 /* ",*" is a valid condition. */
2245 else if (*args != 'U')
2246 as_bad (_("Invalid Unit Instruction Condition."));
2248 opcode |= cmpltr << 13;
2249 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2257 /* Handle a system control completer. */
2259 if (*s == ',' && (*(s + 1) == 'm' || *(s + 1) == 'M'))
2267 INSERT_FIELD_AND_CONTINUE (opcode, flag, 5);
2269 /* Handle a nullification completer for branch instructions. */
2271 nullif = pa_parse_nullif (&s);
2272 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 1);
2274 /* Handle a nullification completer for copr and spop insns. */
2276 nullif = pa_parse_nullif (&s);
2277 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 5);
2280 /* Handle a 11 bit immediate at 31. */
2282 the_insn.field_selector = pa_chk_field_selector (&s);
2285 if (the_insn.exp.X_op == O_constant)
2287 num = evaluate_absolute (&the_insn);
2288 CHECK_FIELD (num, 1023, -1024, 0);
2289 low_sign_unext (num, 11, &num);
2290 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2294 if (is_DP_relative (the_insn.exp))
2295 the_insn.reloc = R_HPPA_GOTOFF;
2296 else if (is_PC_relative (the_insn.exp))
2297 the_insn.reloc = R_HPPA_PCREL_CALL;
2299 the_insn.reloc = R_HPPA;
2300 the_insn.format = 11;
2305 /* Handle a 14 bit immediate at 31. */
2307 the_insn.field_selector = pa_chk_field_selector (&s);
2310 if (the_insn.exp.X_op == O_constant)
2312 num = evaluate_absolute (&the_insn);
2313 CHECK_FIELD (num, 8191, -8192, 0);
2314 low_sign_unext (num, 14, &num);
2315 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2319 if (is_DP_relative (the_insn.exp))
2320 the_insn.reloc = R_HPPA_GOTOFF;
2321 else if (is_PC_relative (the_insn.exp))
2322 the_insn.reloc = R_HPPA_PCREL_CALL;
2324 the_insn.reloc = R_HPPA;
2325 the_insn.format = 14;
2329 /* Handle a 21 bit immediate at 31. */
2331 the_insn.field_selector = pa_chk_field_selector (&s);
2334 if (the_insn.exp.X_op == O_constant)
2336 num = evaluate_absolute (&the_insn);
2337 CHECK_FIELD (num >> 11, 1048575, -1048576, 0);
2338 dis_assemble_21 (num, &num);
2339 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2343 if (is_DP_relative (the_insn.exp))
2344 the_insn.reloc = R_HPPA_GOTOFF;
2345 else if (is_PC_relative (the_insn.exp))
2346 the_insn.reloc = R_HPPA_PCREL_CALL;
2348 the_insn.reloc = R_HPPA;
2349 the_insn.format = 21;
2353 /* Handle a 12 bit branch displacement. */
2355 the_insn.field_selector = pa_chk_field_selector (&s);
2359 if (!strcmp (S_GET_NAME (the_insn.exp.X_add_symbol), "L$0\001"))
2361 unsigned int w1, w, result;
2363 num = evaluate_absolute (&the_insn);
2366 as_bad (_("Branch to unaligned address"));
2369 CHECK_FIELD (num, 8199, -8184, 0);
2370 sign_unext ((num - 8) >> 2, 12, &result);
2371 dis_assemble_12 (result, &w1, &w);
2372 INSERT_FIELD_AND_CONTINUE (opcode, ((w1 << 2) | w), 0);
2376 the_insn.reloc = R_HPPA_PCREL_CALL;
2377 the_insn.format = 12;
2378 the_insn.arg_reloc = last_call_desc.arg_reloc;
2379 memset (&last_call_desc, 0, sizeof (struct call_desc));
2384 /* Handle a 17 bit branch displacement. */
2386 the_insn.field_selector = pa_chk_field_selector (&s);
2390 if (!the_insn.exp.X_add_symbol
2391 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2394 unsigned int w2, w1, w, result;
2396 num = evaluate_absolute (&the_insn);
2399 as_bad (_("Branch to unaligned address"));
2402 CHECK_FIELD (num, 262143, -262144, 0);
2404 if (the_insn.exp.X_add_symbol)
2407 sign_unext (num >> 2, 17, &result);
2408 dis_assemble_17 (result, &w1, &w2, &w);
2409 INSERT_FIELD_AND_CONTINUE (opcode,
2410 ((w2 << 2) | (w1 << 16) | w), 0);
2414 the_insn.reloc = R_HPPA_PCREL_CALL;
2415 the_insn.format = 17;
2416 the_insn.arg_reloc = last_call_desc.arg_reloc;
2417 memset (&last_call_desc, 0, sizeof (struct call_desc));
2421 /* Handle an absolute 17 bit branch target. */
2423 the_insn.field_selector = pa_chk_field_selector (&s);
2427 if (!the_insn.exp.X_add_symbol
2428 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2431 unsigned int w2, w1, w, result;
2433 num = evaluate_absolute (&the_insn);
2436 as_bad (_("Branch to unaligned address"));
2439 CHECK_FIELD (num, 262143, -262144, 0);
2441 if (the_insn.exp.X_add_symbol)
2444 sign_unext (num >> 2, 17, &result);
2445 dis_assemble_17 (result, &w1, &w2, &w);
2446 INSERT_FIELD_AND_CONTINUE (opcode,
2447 ((w2 << 2) | (w1 << 16) | w), 0);
2451 the_insn.reloc = R_HPPA_ABS_CALL;
2452 the_insn.format = 17;
2453 the_insn.arg_reloc = last_call_desc.arg_reloc;
2454 memset (&last_call_desc, 0, sizeof (struct call_desc));
2458 /* Handle a 2 bit shift count at 25. */
2460 num = pa_get_absolute_expression (&the_insn, &s);
2462 CHECK_FIELD (num, 3, 1, 0);
2463 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2465 /* Handle a 5 bit shift count at 26. */
2467 num = pa_get_absolute_expression (&the_insn, &s);
2469 CHECK_FIELD (num, 31, 0, 0);
2470 INSERT_FIELD_AND_CONTINUE (opcode, 31 - num, 5);
2472 /* Handle a 6 bit shift count at 20,22:26. */
2474 num = pa_get_absolute_expression (&the_insn, &s);
2476 CHECK_FIELD (num, 63, 0, 0);
2478 opcode |= (num & 0x20) << 6;
2479 INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 5);
2481 /* Handle a 5 bit bit position at 26. */
2483 num = pa_get_absolute_expression (&the_insn, &s);
2485 CHECK_FIELD (num, 31, 0, 0);
2486 INSERT_FIELD_AND_CONTINUE (opcode, num, 5);
2488 /* Handle a 5 bit immediate at 10. */
2491 num = pa_get_absolute_expression (&the_insn, &s);
2492 if (the_insn.exp.X_op != O_constant)
2495 CHECK_FIELD (num, 31, 0, 0);
2496 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
2498 /* Handle a 9 bit immediate at 28. */
2500 num = pa_get_absolute_expression (&the_insn, &s);
2502 CHECK_FIELD (num, 511, 1, 0);
2503 INSERT_FIELD_AND_CONTINUE (opcode, num, 3);
2505 /* Handle a 13 bit immediate at 18. */
2507 num = pa_get_absolute_expression (&the_insn, &s);
2509 CHECK_FIELD (num, 8191, 0, 0);
2510 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
2512 /* Handle a 26 bit immediate at 31. */
2514 num = pa_get_absolute_expression (&the_insn, &s);
2516 CHECK_FIELD (num, 671108864, 0, 0);
2517 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2519 /* Handle a 3 bit SFU identifier at 25. */
2522 as_bad (_("Invalid SFU identifier"));
2523 num = pa_get_absolute_expression (&the_insn, &s);
2525 CHECK_FIELD (num, 7, 0, 0);
2526 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2528 /* Handle a 20 bit SOP field for spop0. */
2530 num = pa_get_absolute_expression (&the_insn, &s);
2532 CHECK_FIELD (num, 1048575, 0, 0);
2533 num = (num & 0x1f) | ((num & 0x000fffe0) << 6);
2534 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2536 /* Handle a 15bit SOP field for spop1. */
2538 num = pa_get_absolute_expression (&the_insn, &s);
2540 CHECK_FIELD (num, 32767, 0, 0);
2541 INSERT_FIELD_AND_CONTINUE (opcode, num, 11);
2543 /* Handle a 10bit SOP field for spop3. */
2545 num = pa_get_absolute_expression (&the_insn, &s);
2547 CHECK_FIELD (num, 1023, 0, 0);
2548 num = (num & 0x1f) | ((num & 0x000003e0) << 6);
2549 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2551 /* Handle a 15 bit SOP field for spop2. */
2553 num = pa_get_absolute_expression (&the_insn, &s);
2555 CHECK_FIELD (num, 32767, 0, 0);
2556 num = (num & 0x1f) | ((num & 0x00007fe0) << 6);
2557 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2559 /* Handle a 3-bit co-processor ID field. */
2562 as_bad (_("Invalid COPR identifier"));
2563 num = pa_get_absolute_expression (&the_insn, &s);
2565 CHECK_FIELD (num, 7, 0, 0);
2566 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2568 /* Handle a 22bit SOP field for copr. */
2570 num = pa_get_absolute_expression (&the_insn, &s);
2572 CHECK_FIELD (num, 4194303, 0, 0);
2573 num = (num & 0x1f) | ((num & 0x003fffe0) << 4);
2574 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2577 /* Handle a source FP operand format completer. */
2579 flag = pa_parse_fp_format (&s);
2580 the_insn.fpof1 = flag;
2581 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
2583 /* Handle a destination FP operand format completer. */
2585 /* pa_parse_format needs the ',' prefix. */
2587 flag = pa_parse_fp_format (&s);
2588 the_insn.fpof2 = flag;
2589 INSERT_FIELD_AND_CONTINUE (opcode, flag, 13);
2591 /* Handle a source FP operand format completer at 20. */
2593 flag = pa_parse_fp_format (&s);
2594 the_insn.fpof1 = flag;
2595 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
2597 /* Handle L/R register halves like 't'. */
2600 struct pa_11_fp_reg_struct result;
2602 pa_parse_number (&s, &result);
2603 CHECK_FIELD (result.number_part, 31, 0, 0);
2604 opcode |= result.number_part;
2606 /* 0x30 opcodes are FP arithmetic operation opcodes
2607 and need to be turned into 0x38 opcodes. This
2608 is not necessary for loads/stores. */
2609 if (need_pa11_opcode (&the_insn, &result)
2610 && ((opcode & 0xfc000000) == 0x30000000))
2613 INSERT_FIELD_AND_CONTINUE (opcode, result.l_r_select & 1, 6);
2616 /* Handle L/R register halves like 'b'. */
2619 struct pa_11_fp_reg_struct result;
2621 pa_parse_number (&s, &result);
2622 CHECK_FIELD (result.number_part, 31, 0, 0);
2623 opcode |= result.number_part << 21;
2624 if (need_pa11_opcode (&the_insn, &result))
2626 opcode |= (result.l_r_select & 1) << 7;
2632 /* Float operand 1 similar to 'b' but with l/r registers. */
2635 struct pa_11_fp_reg_struct result;
2637 pa_parse_number (&s, &result);
2638 CHECK_FIELD (result.number_part, 31, 0, 0);
2639 opcode |= result.number_part << 21;
2640 opcode |= (result.l_r_select & 1) << 7;
2644 /* Handle L/R register halves like 'b'. */
2647 struct pa_11_fp_reg_struct result;
2650 pa_parse_number (&s, &result);
2651 CHECK_FIELD (result.number_part, 31, 0, 0);
2652 opcode |= (result.number_part & 0x1c) << 11;
2653 opcode |= (result.number_part & 0x3) << 9;
2654 opcode |= (result.l_r_select & 1) << 8;
2658 /* Handle L/R register halves like 'x'. */
2661 struct pa_11_fp_reg_struct result;
2663 pa_parse_number (&s, &result);
2664 CHECK_FIELD (result.number_part, 31, 0, 0);
2665 opcode |= (result.number_part & 0x1f) << 16;
2666 if (need_pa11_opcode (&the_insn, &result))
2668 opcode |= (result.l_r_select & 1) << 1;
2673 /* Handle L/R register halves like 'x'. */
2676 struct pa_11_fp_reg_struct result;
2678 pa_parse_number (&s, &result);
2679 CHECK_FIELD (result.number_part, 31, 0, 0);
2680 opcode |= (result.number_part & 0x1f) << 16;
2681 if (need_pa11_opcode (&the_insn, &result))
2683 opcode |= (result.l_r_select & 1) << 12;
2689 /* Float operand 2, like 'x' but with l/r register halves. */
2692 struct pa_11_fp_reg_struct result;
2694 pa_parse_number (&s, &result);
2695 CHECK_FIELD (result.number_part, 31, 0, 0);
2696 opcode |= (result.number_part & 0x1f) << 16;
2697 opcode |= (result.l_r_select & 1) << 12;
2701 /* Handle a 5 bit register field at 10. */
2704 struct pa_11_fp_reg_struct result;
2706 pa_parse_number (&s, &result);
2707 CHECK_FIELD (result.number_part, 31, 0, 0);
2708 if (the_insn.fpof1 == SGL)
2710 if (result.number_part < 16)
2712 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2716 result.number_part &= 0xF;
2717 result.number_part |= (result.l_r_select & 1) << 4;
2719 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 21);
2722 /* Handle a 5 bit register field at 15. */
2725 struct pa_11_fp_reg_struct result;
2727 pa_parse_number (&s, &result);
2728 CHECK_FIELD (result.number_part, 31, 0, 0);
2729 if (the_insn.fpof1 == SGL)
2731 if (result.number_part < 16)
2733 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2736 result.number_part &= 0xF;
2737 result.number_part |= (result.l_r_select & 1) << 4;
2739 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 16);
2742 /* Handle a 5 bit register field at 31. */
2745 struct pa_11_fp_reg_struct result;
2747 pa_parse_number (&s, &result);
2748 CHECK_FIELD (result.number_part, 31, 0, 0);
2749 if (the_insn.fpof1 == SGL)
2751 if (result.number_part < 16)
2753 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2756 result.number_part &= 0xF;
2757 result.number_part |= (result.l_r_select & 1) << 4;
2759 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 0);
2762 /* Handle a 5 bit register field at 20. */
2765 struct pa_11_fp_reg_struct result;
2767 pa_parse_number (&s, &result);
2768 CHECK_FIELD (result.number_part, 31, 0, 0);
2769 if (the_insn.fpof1 == SGL)
2771 if (result.number_part < 16)
2773 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2776 result.number_part &= 0xF;
2777 result.number_part |= (result.l_r_select & 1) << 4;
2779 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 11);
2782 /* Handle a 5 bit register field at 25. */
2785 struct pa_11_fp_reg_struct result;
2787 pa_parse_number (&s, &result);
2788 CHECK_FIELD (result.number_part, 31, 0, 0);
2789 if (the_insn.fpof1 == SGL)
2791 if (result.number_part < 16)
2793 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2796 result.number_part &= 0xF;
2797 result.number_part |= (result.l_r_select & 1) << 4;
2799 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 6);
2802 /* Handle a floating point operand format at 26.
2803 Only allows single and double precision. */
2805 flag = pa_parse_fp_format (&s);
2811 the_insn.fpof1 = flag;
2817 as_bad (_("Invalid Floating Point Operand Format."));
2828 /* Check if the args matched. */
2831 if (&insn[1] - pa_opcodes < (int) NUMOPCODES
2832 && !strcmp (insn->name, insn[1].name))
2840 as_bad (_("Invalid operands %s"), error_message);
2847 the_insn.opcode = opcode;
2850 /* Turn a string in input_line_pointer into a floating point constant of type
2851 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2852 emitted is stored in *sizeP . An error message or NULL is returned. */
2854 #define MAX_LITTLENUMS 6
2857 md_atof (type, litP, sizeP)
2863 LITTLENUM_TYPE words[MAX_LITTLENUMS];
2864 LITTLENUM_TYPE *wordP;
2896 return _("Bad call to MD_ATOF()");
2898 t = atof_ieee (input_line_pointer, type, words);
2900 input_line_pointer = t;
2901 *sizeP = prec * sizeof (LITTLENUM_TYPE);
2902 for (wordP = words; prec--;)
2904 md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE));
2905 litP += sizeof (LITTLENUM_TYPE);
2910 /* Write out big-endian. */
2913 md_number_to_chars (buf, val, n)
2918 number_to_chars_bigendian (buf, val, n);
2921 /* Translate internal representation of relocation info to BFD target
2925 tc_gen_reloc (section, fixp)
2930 struct hppa_fix_struct *hppa_fixp;
2931 bfd_reloc_code_real_type code;
2932 static arelent *no_relocs = NULL;
2934 bfd_reloc_code_real_type **codes;
2938 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
2939 if (fixp->fx_addsy == 0)
2941 assert (hppa_fixp != 0);
2942 assert (section != 0);
2944 reloc = (arelent *) xmalloc (sizeof (arelent));
2946 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2947 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
2948 codes = (bfd_reloc_code_real_type **) hppa_gen_reloc_type (stdoutput,
2950 hppa_fixp->fx_r_format,
2951 hppa_fixp->fx_r_field,
2952 fixp->fx_subsy != NULL,
2953 symbol_get_bfdsym (fixp->fx_addsy));
2958 for (n_relocs = 0; codes[n_relocs]; n_relocs++)
2961 relocs = (arelent **) xmalloc (sizeof (arelent *) * n_relocs + 1);
2962 reloc = (arelent *) xmalloc (sizeof (arelent) * n_relocs);
2963 for (i = 0; i < n_relocs; i++)
2964 relocs[i] = &reloc[i];
2966 relocs[n_relocs] = NULL;
2969 switch (fixp->fx_r_type)
2972 assert (n_relocs == 1);
2976 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2977 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
2978 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
2979 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2980 reloc->addend = 0; /* default */
2982 assert (reloc->howto && code == reloc->howto->type);
2984 /* Now, do any processing that is dependent on the relocation type. */
2987 case R_PARISC_DLTREL21L:
2988 case R_PARISC_DLTREL14R:
2989 case R_PARISC_DLTREL14F:
2990 case R_PARISC_PLABEL32:
2991 case R_PARISC_PLABEL21L:
2992 case R_PARISC_PLABEL14R:
2993 /* For plabel relocations, the addend of the
2994 relocation should be either 0 (no static link) or 2
2995 (static link required).
2997 FIXME: We always assume no static link!
2999 We also slam a zero addend into the DLT relative relocs;
3000 it doesn't make a lot of sense to use any addend since
3001 it gets you a different (eg unknown) DLT entry. */
3005 case R_PARISC_PCREL21L:
3006 case R_PARISC_PCREL17R:
3007 case R_PARISC_PCREL17F:
3008 case R_PARISC_PCREL17C:
3009 case R_PARISC_PCREL14R:
3010 case R_PARISC_PCREL14F:
3011 /* The constant is stored in the instruction. */
3012 reloc->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
3015 reloc->addend = fixp->fx_offset;
3022 /* Walk over reach relocation returned by the BFD backend. */
3023 for (i = 0; i < n_relocs; i++)
3027 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3028 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3029 relocs[i]->howto = bfd_reloc_type_lookup (stdoutput, code);
3030 relocs[i]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3035 /* The only time we ever use a R_COMP2 fixup is for the difference
3036 of two symbols. With that in mind we fill in all four
3037 relocs now and break out of the loop. */
3039 relocs[0]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
3040 relocs[0]->howto = bfd_reloc_type_lookup (stdoutput, *codes[0]);
3041 relocs[0]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3042 relocs[0]->addend = 0;
3043 relocs[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3044 *relocs[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3045 relocs[1]->howto = bfd_reloc_type_lookup (stdoutput, *codes[1]);
3046 relocs[1]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3047 relocs[1]->addend = 0;
3048 relocs[2]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3049 *relocs[2]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy);
3050 relocs[2]->howto = bfd_reloc_type_lookup (stdoutput, *codes[2]);
3051 relocs[2]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3052 relocs[2]->addend = 0;
3053 relocs[3]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
3054 relocs[3]->howto = bfd_reloc_type_lookup (stdoutput, *codes[3]);
3055 relocs[3]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3056 relocs[3]->addend = 0;
3057 relocs[4]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
3058 relocs[4]->howto = bfd_reloc_type_lookup (stdoutput, *codes[4]);
3059 relocs[4]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3060 relocs[4]->addend = 0;
3064 relocs[i]->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
3070 /* For plabel relocations, the addend of the
3071 relocation should be either 0 (no static link) or 2
3072 (static link required).
3074 FIXME: We always assume no static link!
3076 We also slam a zero addend into the DLT relative relocs;
3077 it doesn't make a lot of sense to use any addend since
3078 it gets you a different (eg unknown) DLT entry. */
3079 relocs[i]->addend = 0;
3094 /* There is no symbol or addend associated with these fixups. */
3095 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3096 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
3097 relocs[i]->addend = 0;
3103 /* There is no symbol associated with these fixups. */
3104 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3105 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
3106 relocs[i]->addend = fixp->fx_offset;
3110 relocs[i]->addend = fixp->fx_offset;
3120 /* Process any machine dependent frag types. */
3123 md_convert_frag (abfd, sec, fragP)
3125 register asection *sec;
3126 register fragS *fragP;
3128 unsigned int address;
3130 if (fragP->fr_type == rs_machine_dependent)
3132 switch ((int) fragP->fr_subtype)
3135 fragP->fr_type = rs_fill;
3136 know (fragP->fr_var == 1);
3137 know (fragP->fr_next);
3138 address = fragP->fr_address + fragP->fr_fix;
3139 if (address % fragP->fr_offset)
3142 fragP->fr_next->fr_address
3147 fragP->fr_offset = 0;
3153 /* Round up a section size to the appropriate boundary. */
3156 md_section_align (segment, size)
3160 int align = bfd_get_section_alignment (stdoutput, segment);
3161 int align2 = (1 << align) - 1;
3163 return (size + align2) & ~align2;
3166 /* Return the approximate size of a frag before relaxation has occurred. */
3168 md_estimate_size_before_relax (fragP, segment)
3169 register fragS *fragP;
3176 while ((fragP->fr_fix + size) % fragP->fr_offset)
3182 CONST char *md_shortopts = "";
3183 struct option md_longopts[] = {
3184 {NULL, no_argument, NULL, 0}
3186 size_t md_longopts_size = sizeof(md_longopts);
3189 md_parse_option (c, arg)
3197 md_show_usage (stream)
3202 /* We have no need to default values of symbols. */
3205 md_undefined_symbol (name)
3211 /* Apply a fixup to an instruction. */
3214 md_apply_fix (fixP, valp)
3218 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
3219 struct hppa_fix_struct *hppa_fixP;
3220 long new_val, result = 0;
3221 unsigned int w1, w2, w, resulti;
3223 hppa_fixP = (struct hppa_fix_struct *) fixP->tc_fix_data;
3224 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3225 never be "applied" (they are just markers). Likewise for
3226 R_HPPA_BEGIN_BRTAB and R_HPPA_END_BRTAB. */
3228 if (fixP->fx_r_type == R_HPPA_ENTRY
3229 || fixP->fx_r_type == R_HPPA_EXIT
3230 || fixP->fx_r_type == R_HPPA_BEGIN_BRTAB
3231 || fixP->fx_r_type == R_HPPA_END_BRTAB
3232 || fixP->fx_r_type == R_HPPA_BEGIN_TRY)
3235 /* Disgusting. We must set fx_offset ourselves -- R_HPPA_END_TRY
3236 fixups are considered not adjustable, which in turn causes
3237 adjust_reloc_syms to not set fx_offset. Ugh. */
3238 if (fixP->fx_r_type == R_HPPA_END_TRY)
3240 fixP->fx_offset = *valp;
3245 /* There should have been an HPPA specific fixup associated
3246 with the GAS fixup. */
3249 unsigned long buf_wd = bfd_get_32 (stdoutput, buf);
3250 unsigned char fmt = bfd_hppa_insn2fmt (buf_wd);
3252 /* If there is a symbol associated with this fixup, then it's something
3253 which will need a SOM relocation (except for some PC-relative relocs).
3254 In such cases we should treat the "val" or "addend" as zero since it
3255 will be added in as needed from fx_offset in tc_gen_reloc. */
3256 if ((fixP->fx_addsy != NULL
3257 || fixP->fx_r_type == R_HPPA_NONE)
3262 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
3264 /* These field selectors imply that we do not want an addend. */
3265 else if (hppa_fixP->fx_r_field == e_psel
3266 || hppa_fixP->fx_r_field == e_rpsel
3267 || hppa_fixP->fx_r_field == e_lpsel
3268 || hppa_fixP->fx_r_field == e_tsel
3269 || hppa_fixP->fx_r_field == e_rtsel
3270 || hppa_fixP->fx_r_field == e_ltsel)
3271 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
3272 /* This is truely disgusting. The machine independent code blindly
3273 adds in the value of the symbol being relocated against. Damn! */
3275 && fixP->fx_addsy != NULL
3276 && S_GET_SEGMENT (fixP->fx_addsy) != bfd_com_section_ptr)
3277 new_val = hppa_field_adjust (*valp - S_GET_VALUE (fixP->fx_addsy),
3278 0, hppa_fixP->fx_r_field);
3281 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3283 /* Handle pc-relative exceptions from above. */
3284 #define arg_reloc_stub_needed(CALLER, CALLEE) \
3285 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3286 if ((fmt == 12 || fmt == 17 || fmt == 22)
3290 && !arg_reloc_stub_needed ((long) ((obj_symbol_type *)
3291 symbol_get_bfdsym (fixP->fx_addsy))->tc_data.ap.hppa_arg_reloc,
3292 hppa_fixP->fx_arg_reloc)
3294 && (((int)(*valp) > -262144 && (int)(*valp) < 262143) && fmt != 22)
3295 && S_GET_SEGMENT (fixP->fx_addsy) == hppa_fixP->segment
3297 && S_GET_SEGMENT (fixP->fx_subsy) != hppa_fixP->segment))
3299 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3300 #undef arg_reloc_stub_needed
3304 /* Handle all opcodes with the 'j' operand type. */
3306 CHECK_FIELD (new_val, 8191, -8192, 0);
3308 /* Mask off 14 bits to be changed. */
3309 bfd_put_32 (stdoutput,
3310 bfd_get_32 (stdoutput, buf) & 0xffffc000,
3312 low_sign_unext (new_val, 14, &resulti);
3316 /* Handle all opcodes with the 'k' operand type. */
3318 CHECK_FIELD (new_val, 2097152, 0, 0);
3320 /* Mask off 21 bits to be changed. */
3321 bfd_put_32 (stdoutput,
3322 bfd_get_32 (stdoutput, buf) & 0xffe00000,
3324 dis_assemble_21 (new_val, &resulti);
3328 /* Handle all the opcodes with the 'i' operand type. */
3330 CHECK_FIELD (new_val, 1023, -1023, 0);
3332 /* Mask off 11 bits to be changed. */
3333 bfd_put_32 (stdoutput,
3334 bfd_get_32 (stdoutput, buf) & 0xffff800,
3336 low_sign_unext (new_val, 11, &resulti);
3340 /* Handle all the opcodes with the 'w' operand type. */
3342 CHECK_FIELD (new_val, 8199, -8184, 0);
3344 /* Mask off 11 bits to be changed. */
3345 sign_unext ((new_val - 8) >> 2, 12, &resulti);
3346 bfd_put_32 (stdoutput,
3347 bfd_get_32 (stdoutput, buf) & 0xffffe002,
3350 dis_assemble_12 (resulti, &w1, &w);
3351 result = ((w1 << 2) | w);
3354 /* Handle some of the opcodes with the 'W' operand type. */
3357 int distance = *valp;
3359 CHECK_FIELD (new_val, 262143, -262144, 0);
3361 /* If this is an absolute branch (ie no link) with an out of
3362 range target, then we want to complain. */
3363 if (fixP->fx_r_type == R_HPPA_PCREL_CALL
3364 && (distance > 262143 || distance < -262144)
3365 && (bfd_get_32 (stdoutput, buf) & 0xffe00000) == 0xe8000000)
3366 CHECK_FIELD (distance, 262143, -262144, 0);
3368 /* Mask off 17 bits to be changed. */
3369 bfd_put_32 (stdoutput,
3370 bfd_get_32 (stdoutput, buf) & 0xffe0e002,
3372 sign_unext ((new_val - 8) >> 2, 17, &resulti);
3373 dis_assemble_17 (resulti, &w1, &w2, &w);
3374 result = ((w2 << 2) | (w1 << 16) | w);
3380 bfd_put_32 (stdoutput, new_val, buf);
3384 as_bad (_("Unknown relocation encountered in md_apply_fix."));
3388 /* Insert the relocation. */
3389 bfd_put_32 (stdoutput, bfd_get_32 (stdoutput, buf) | result, buf);
3394 printf (_("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n"),
3395 (unsigned int) fixP, fixP->fx_r_type);
3400 /* Exactly what point is a PC-relative offset relative TO?
3401 On the PA, they're relative to the address of the offset. */
3404 md_pcrel_from (fixP)
3407 return fixP->fx_where + fixP->fx_frag->fr_address;
3410 /* Return nonzero if the input line pointer is at the end of
3414 is_end_of_statement ()
3416 return ((*input_line_pointer == '\n')
3417 || (*input_line_pointer == ';')
3418 || (*input_line_pointer == '!'));
3421 /* Read a number from S. The number might come in one of many forms,
3422 the most common will be a hex or decimal constant, but it could be
3423 a pre-defined register (Yuk!), or an absolute symbol.
3425 Return a number or -1 for failure.
3427 When parsing PA-89 FP register numbers RESULT will be
3428 the address of a structure to return information about
3429 L/R half of FP registers, store results there as appropriate.
3431 pa_parse_number can not handle negative constants and will fail
3432 horribly if it is passed such a constant. */
3435 pa_parse_number (s, result)
3437 struct pa_11_fp_reg_struct *result;
3446 /* Skip whitespace before the number. */
3447 while (*p == ' ' || *p == '\t')
3450 /* Store info in RESULT if requested by caller. */
3453 result->number_part = -1;
3454 result->l_r_select = -1;
3460 /* Looks like a number. */
3463 if (*p == '0' && (*(p + 1) == 'x' || *(p + 1) == 'X'))
3465 /* The number is specified in hex. */
3467 while (isdigit (*p) || ((*p >= 'a') && (*p <= 'f'))
3468 || ((*p >= 'A') && (*p <= 'F')))
3471 num = num * 16 + *p - '0';
3472 else if (*p >= 'a' && *p <= 'f')
3473 num = num * 16 + *p - 'a' + 10;
3475 num = num * 16 + *p - 'A' + 10;
3481 /* The number is specified in decimal. */
3482 while (isdigit (*p))
3484 num = num * 10 + *p - '0';
3489 /* Store info in RESULT if requested by the caller. */
3492 result->number_part = num;
3494 if (IS_R_SELECT (p))
3496 result->l_r_select = 1;
3499 else if (IS_L_SELECT (p))
3501 result->l_r_select = 0;
3505 result->l_r_select = 0;
3510 /* The number might be a predefined register. */
3515 /* Tege hack: Special case for general registers as the general
3516 code makes a binary search with case translation, and is VERY
3521 if (*p == 'e' && *(p + 1) == 't'
3522 && (*(p + 2) == '0' || *(p + 2) == '1'))
3525 num = *p - '0' + 28;
3533 else if (!isdigit (*p))
3536 as_bad (_("Undefined register: '%s'."), name);
3542 num = num * 10 + *p++ - '0';
3543 while (isdigit (*p));
3548 /* Do a normal register search. */
3549 while (is_part_of_name (c))
3555 status = reg_name_search (name);
3561 as_bad (_("Undefined register: '%s'."), name);
3567 /* Store info in RESULT if requested by caller. */
3570 result->number_part = num;
3571 if (IS_R_SELECT (p - 1))
3572 result->l_r_select = 1;
3573 else if (IS_L_SELECT (p - 1))
3574 result->l_r_select = 0;
3576 result->l_r_select = 0;
3581 /* And finally, it could be a symbol in the absolute section which
3582 is effectively a constant. */
3586 while (is_part_of_name (c))
3592 if ((sym = symbol_find (name)) != NULL)
3594 if (S_GET_SEGMENT (sym) == &bfd_abs_section)
3595 num = S_GET_VALUE (sym);
3599 as_bad (_("Non-absolute symbol: '%s'."), name);
3605 /* There is where we'd come for an undefined symbol
3606 or for an empty string. For an empty string we
3607 will return zero. That's a concession made for
3608 compatability with the braindamaged HP assemblers. */
3614 as_bad (_("Undefined absolute constant: '%s'."), name);
3620 /* Store info in RESULT if requested by caller. */
3623 result->number_part = num;
3624 if (IS_R_SELECT (p - 1))
3625 result->l_r_select = 1;
3626 else if (IS_L_SELECT (p - 1))
3627 result->l_r_select = 0;
3629 result->l_r_select = 0;
3637 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3639 /* Given NAME, find the register number associated with that name, return
3640 the integer value associated with the given name or -1 on failure. */
3643 reg_name_search (name)
3646 int middle, low, high;
3650 high = REG_NAME_CNT - 1;
3654 middle = (low + high) / 2;
3655 cmp = strcasecmp (name, pre_defined_registers[middle].name);
3661 return pre_defined_registers[middle].value;
3663 while (low <= high);
3669 /* Return nonzero if the given INSN and L/R information will require
3670 a new PA-1.1 opcode. */
3673 need_pa11_opcode (insn, result)
3675 struct pa_11_fp_reg_struct *result;
3677 if (result->l_r_select == 1 && !(insn->fpof1 == DBL && insn->fpof2 == DBL))
3679 /* If this instruction is specific to a particular architecture,
3680 then set a new architecture. */
3681 if (bfd_get_mach (stdoutput) < pa11)
3683 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, pa11))
3684 as_warn (_("could not update architecture and machine"));
3692 /* Parse a condition for a fcmp instruction. Return the numerical
3693 code associated with the condition. */
3696 pa_parse_fp_cmp_cond (s)
3703 for (i = 0; i < 32; i++)
3705 if (strncasecmp (*s, fp_cond_map[i].string,
3706 strlen (fp_cond_map[i].string)) == 0)
3708 cond = fp_cond_map[i].cond;
3709 *s += strlen (fp_cond_map[i].string);
3710 /* If not a complete match, back up the input string and
3712 if (**s != ' ' && **s != '\t')
3714 *s -= strlen (fp_cond_map[i].string);
3717 while (**s == ' ' || **s == '\t')
3723 as_bad (_("Invalid FP Compare Condition: %s"), *s);
3725 /* Advance over the bogus completer. */
3726 while (**s != ',' && **s != ' ' && **s != '\t')
3733 /* Parse an FP operand format completer returning the completer
3736 static fp_operand_format
3737 pa_parse_fp_format (s)
3746 if (strncasecmp (*s, "sgl", 3) == 0)
3751 else if (strncasecmp (*s, "dbl", 3) == 0)
3756 else if (strncasecmp (*s, "quad", 4) == 0)
3763 format = ILLEGAL_FMT;
3764 as_bad (_("Invalid FP Operand Format: %3s"), *s);
3771 /* Convert from a selector string into a selector type. */
3774 pa_chk_field_selector (str)
3777 int middle, low, high;
3781 /* Read past any whitespace. */
3782 /* FIXME: should we read past newlines and formfeeds??? */
3783 while (**str == ' ' || **str == '\t' || **str == '\n' || **str == '\f')
3786 if ((*str)[1] == '\'' || (*str)[1] == '%')
3787 name[0] = tolower ((*str)[0]),
3789 else if ((*str)[2] == '\'' || (*str)[2] == '%')
3790 name[0] = tolower ((*str)[0]),
3791 name[1] = tolower ((*str)[1]),
3793 else if ((*str)[3] == '\'' || (*str)[3] == '%')
3794 name[0] = tolower ((*str)[0]),
3795 name[1] = tolower ((*str)[1]),
3796 name[2] = tolower ((*str)[2]),
3802 high = sizeof (selector_table) / sizeof (struct selector_entry) - 1;
3806 middle = (low + high) / 2;
3807 cmp = strcmp (name, selector_table[middle].prefix);
3814 *str += strlen (name) + 1;
3816 if (selector_table[middle].field_selector == e_nsel)
3819 return selector_table[middle].field_selector;
3822 while (low <= high);
3827 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
3830 get_expression (str)
3836 save_in = input_line_pointer;
3837 input_line_pointer = str;
3838 seg = expression (&the_insn.exp);
3839 if (!(seg == absolute_section
3840 || seg == undefined_section
3841 || SEG_NORMAL (seg)))
3843 as_warn (_("Bad segment in expression."));
3844 expr_end = input_line_pointer;
3845 input_line_pointer = save_in;
3848 expr_end = input_line_pointer;
3849 input_line_pointer = save_in;
3853 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
3855 pa_get_absolute_expression (insn, strp)
3861 insn->field_selector = pa_chk_field_selector (strp);
3862 save_in = input_line_pointer;
3863 input_line_pointer = *strp;
3864 expression (&insn->exp);
3865 /* This is not perfect, but is a huge improvement over doing nothing.
3867 The PA assembly syntax is ambigious in a variety of ways. Consider
3868 this string "4 %r5" Is that the number 4 followed by the register
3869 r5, or is that 4 MOD 5?
3871 If we get a modulo expresion When looking for an absolute, we try
3872 again cutting off the input string at the first whitespace character. */
3873 if (insn->exp.X_op == O_modulus)
3878 input_line_pointer = *strp;
3880 while (*s != ',' && *s != ' ' && *s != '\t')
3886 retval = pa_get_absolute_expression (insn, strp);
3888 input_line_pointer = save_in;
3890 return evaluate_absolute (insn);
3892 if (insn->exp.X_op != O_constant)
3894 as_bad (_("Bad segment (should be absolute)."));
3895 expr_end = input_line_pointer;
3896 input_line_pointer = save_in;
3899 expr_end = input_line_pointer;
3900 input_line_pointer = save_in;
3901 return evaluate_absolute (insn);
3904 /* Evaluate an absolute expression EXP which may be modified by
3905 the selector FIELD_SELECTOR. Return the value of the expression. */
3907 evaluate_absolute (insn)
3912 int field_selector = insn->field_selector;
3915 value = exp.X_add_number;
3917 switch (field_selector)
3923 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3925 if (value & 0x00000400)
3927 value = (value & 0xfffff800) >> 11;
3930 /* Sign extend from bit 21. */
3932 if (value & 0x00000400)
3933 value |= 0xfffff800;
3938 /* Arithmetic shift right 11 bits. */
3940 value = (value & 0xfffff800) >> 11;
3943 /* Set bits 0-20 to zero. */
3945 value = value & 0x7ff;
3948 /* Add 0x800 and arithmetic shift right 11 bits. */
3951 value = (value & 0xfffff800) >> 11;
3954 /* Set bitgs 0-21 to one. */
3956 value |= 0xfffff800;
3959 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3961 value = (RSEL_ROUND (value) & 0x7ff) + (value - RSEL_ROUND (value));
3965 value = (RSEL_ROUND (value) >> 11) & 0x1fffff;
3970 BAD_CASE (field_selector);
3976 /* Given an argument location specification return the associated
3977 argument location number. */
3980 pa_build_arg_reloc (type_name)
3984 if (strncasecmp (type_name, "no", 2) == 0)
3986 if (strncasecmp (type_name, "gr", 2) == 0)
3988 else if (strncasecmp (type_name, "fr", 2) == 0)
3990 else if (strncasecmp (type_name, "fu", 2) == 0)
3993 as_bad (_("Invalid argument location: %s\n"), type_name);
3998 /* Encode and return an argument relocation specification for
3999 the given register in the location specified by arg_reloc. */
4002 pa_align_arg_reloc (reg, arg_reloc)
4004 unsigned int arg_reloc;
4006 unsigned int new_reloc;
4008 new_reloc = arg_reloc;
4024 as_bad (_("Invalid argument description: %d"), reg);
4030 /* Parse a PA nullification completer (,n). Return nonzero if the
4031 completer was found; return zero if no completer was found. */
4043 if (strncasecmp (*s, "n", 1) == 0)
4047 as_bad (_("Invalid Nullification: (%c)"), **s);
4056 /* Parse a non-negated compare/subtract completer returning the
4057 number (for encoding in instrutions) of the given completer.
4059 ISBRANCH specifies whether or not this is parsing a condition
4060 completer for a branch (vs a nullification completer for a
4061 computational instruction. */
4064 pa_parse_nonneg_cmpsub_cmpltr (s, isbranch)
4069 char *name = *s + 1;
4078 while (**s != ',' && **s != ' ' && **s != '\t')
4084 if (strcmp (name, "=") == 0)
4088 else if (strcmp (name, "<") == 0)
4092 else if (strcmp (name, "<=") == 0)
4096 else if (strcmp (name, "<<") == 0)
4100 else if (strcmp (name, "<<=") == 0)
4104 else if (strcasecmp (name, "sv") == 0)
4108 else if (strcasecmp (name, "od") == 0)
4112 /* If we have something like addb,n then there is no condition
4114 else if (strcasecmp (name, "n") == 0 && isbranch)
4126 /* Reset pointers if this was really a ,n for a branch instruction. */
4134 /* Parse a negated compare/subtract completer returning the
4135 number (for encoding in instrutions) of the given completer.
4137 ISBRANCH specifies whether or not this is parsing a condition
4138 completer for a branch (vs a nullification completer for a
4139 computational instruction. */
4142 pa_parse_neg_cmpsub_cmpltr (s, isbranch)
4147 char *name = *s + 1;
4156 while (**s != ',' && **s != ' ' && **s != '\t')
4162 if (strcasecmp (name, "tr") == 0)
4166 else if (strcmp (name, "<>") == 0)
4170 else if (strcmp (name, ">=") == 0)
4174 else if (strcmp (name, ">") == 0)
4178 else if (strcmp (name, ">>=") == 0)
4182 else if (strcmp (name, ">>") == 0)
4186 else if (strcasecmp (name, "nsv") == 0)
4190 else if (strcasecmp (name, "ev") == 0)
4194 /* If we have something like addb,n then there is no condition
4196 else if (strcasecmp (name, "n") == 0 && isbranch)
4208 /* Reset pointers if this was really a ,n for a branch instruction. */
4217 /* Parse a non-negated addition completer returning the number
4218 (for encoding in instrutions) of the given completer.
4220 ISBRANCH specifies whether or not this is parsing a condition
4221 completer for a branch (vs a nullification completer for a
4222 computational instruction. */
4225 pa_parse_nonneg_add_cmpltr (s, isbranch)
4230 char *name = *s + 1;
4238 while (**s != ',' && **s != ' ' && **s != '\t')
4242 if (strcmp (name, "=") == 0)
4246 else if (strcmp (name, "<") == 0)
4250 else if (strcmp (name, "<=") == 0)
4254 else if (strcasecmp (name, "nuv") == 0)
4258 else if (strcasecmp (name, "znv") == 0)
4262 else if (strcasecmp (name, "sv") == 0)
4266 else if (strcasecmp (name, "od") == 0)
4270 /* If we have something like addb,n then there is no condition
4272 else if (strcasecmp (name, "n") == 0 && isbranch)
4283 /* Reset pointers if this was really a ,n for a branch instruction. */
4284 if (cmpltr == 0 && *name == 'n' && isbranch)
4290 /* Parse a negated addition completer returning the number
4291 (for encoding in instrutions) of the given completer.
4293 ISBRANCH specifies whether or not this is parsing a condition
4294 completer for a branch (vs a nullification completer for a
4295 computational instruction). */
4298 pa_parse_neg_add_cmpltr (s, isbranch)
4303 char *name = *s + 1;
4311 while (**s != ',' && **s != ' ' && **s != '\t')
4315 if (strcasecmp (name, "tr") == 0)
4319 else if (strcmp (name, "<>") == 0)
4323 else if (strcmp (name, ">=") == 0)
4327 else if (strcmp (name, ">") == 0)
4331 else if (strcasecmp (name, "uv") == 0)
4335 else if (strcasecmp (name, "vnz") == 0)
4339 else if (strcasecmp (name, "nsv") == 0)
4343 else if (strcasecmp (name, "ev") == 0)
4347 /* If we have something like addb,n then there is no condition
4349 else if (strcasecmp (name, "n") == 0 && isbranch)
4360 /* Reset pointers if this was really a ,n for a branch instruction. */
4361 if (cmpltr == 0 && *name == 'n' && isbranch)
4368 /* Handle an alignment directive. Special so that we can update the
4369 alignment of the subspace if necessary. */
4373 /* We must have a valid space and subspace. */
4374 pa_check_current_space_and_subspace ();
4376 /* Let the generic gas code do most of the work. */
4377 s_align_bytes (bytes);
4379 /* If bytes is a power of 2, then update the current subspace's
4380 alignment if necessary. */
4381 if (log2 (bytes) != -1)
4382 record_alignment (current_subspace->ssd_seg, log2 (bytes));
4386 /* Handle a .BLOCK type pseudo-op. */
4394 unsigned int temp_size;
4398 /* We must have a valid space and subspace. */
4399 pa_check_current_space_and_subspace ();
4402 temp_size = get_absolute_expression ();
4404 /* Always fill with zeros, that's what the HP assembler does. */
4407 p = frag_var (rs_fill, (int) temp_size, (int) temp_size,
4408 (relax_substateT) 0, (symbolS *) 0, (offsetT) 1, NULL);
4409 memset (p, 0, temp_size);
4411 /* Convert 2 bytes at a time. */
4413 for (i = 0; i < temp_size; i += 2)
4415 md_number_to_chars (p + i,
4417 (int) ((temp_size - i) > 2 ? 2 : (temp_size - i)));
4420 pa_undefine_label ();
4421 demand_empty_rest_of_line ();
4424 /* Handle a .begin_brtab and .end_brtab pseudo-op. */
4432 /* The BRTAB relocations are only availble in SOM (to denote
4433 the beginning and end of branch tables). */
4434 char *where = frag_more (0);
4436 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4437 NULL, (offsetT) 0, NULL,
4438 0, begin ? R_HPPA_BEGIN_BRTAB : R_HPPA_END_BRTAB,
4439 e_fsel, 0, 0, NULL);
4442 demand_empty_rest_of_line ();
4445 /* Handle a .begin_try and .end_try pseudo-op. */
4453 char *where = frag_more (0);
4458 /* The TRY relocations are only availble in SOM (to denote
4459 the beginning and end of exception handling regions). */
4461 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4462 NULL, (offsetT) 0, begin ? NULL : &exp,
4463 0, begin ? R_HPPA_BEGIN_TRY : R_HPPA_END_TRY,
4464 e_fsel, 0, 0, NULL);
4467 demand_empty_rest_of_line ();
4470 /* Handle a .CALL pseudo-op. This involves storing away information
4471 about where arguments are to be found so the linker can detect
4472 (and correct) argument location mismatches between caller and callee. */
4479 /* We must have a valid space and subspace. */
4480 pa_check_current_space_and_subspace ();
4483 pa_call_args (&last_call_desc);
4484 demand_empty_rest_of_line ();
4487 /* Do the dirty work of building a call descriptor which describes
4488 where the caller placed arguments to a function call. */
4491 pa_call_args (call_desc)
4492 struct call_desc *call_desc;
4495 unsigned int temp, arg_reloc;
4497 while (!is_end_of_statement ())
4499 name = input_line_pointer;
4500 c = get_symbol_end ();
4501 /* Process a source argument. */
4502 if ((strncasecmp (name, "argw", 4) == 0))
4504 temp = atoi (name + 4);
4505 p = input_line_pointer;
4507 input_line_pointer++;
4508 name = input_line_pointer;
4509 c = get_symbol_end ();
4510 arg_reloc = pa_build_arg_reloc (name);
4511 call_desc->arg_reloc |= pa_align_arg_reloc (temp, arg_reloc);
4513 /* Process a return value. */
4514 else if ((strncasecmp (name, "rtnval", 6) == 0))
4516 p = input_line_pointer;
4518 input_line_pointer++;
4519 name = input_line_pointer;
4520 c = get_symbol_end ();
4521 arg_reloc = pa_build_arg_reloc (name);
4522 call_desc->arg_reloc |= (arg_reloc & 0x3);
4526 as_bad (_("Invalid .CALL argument: %s"), name);
4528 p = input_line_pointer;
4530 if (!is_end_of_statement ())
4531 input_line_pointer++;
4535 /* Return TRUE if FRAG1 and FRAG2 are the same. */
4538 is_same_frag (frag1, frag2)
4545 else if (frag2 == NULL)
4547 else if (frag1 == frag2)
4549 else if (frag2->fr_type == rs_fill && frag2->fr_fix == 0)
4550 return (is_same_frag (frag1, frag2->fr_next));
4556 /* Build an entry in the UNWIND subspace from the given function
4557 attributes in CALL_INFO. This is not needed for SOM as using
4558 R_ENTRY and R_EXIT relocations allow the linker to handle building
4559 of the unwind spaces. */
4562 pa_build_unwind_subspace (call_info)
4563 struct call_info *call_info;
4566 asection *seg, *save_seg;
4568 subsegT subseg, save_subseg;
4572 if (bfd_get_arch_info (stdoutput)->bits_per_address == 32)
4573 reloc = R_PARISC_DIR32;
4575 reloc = R_PARISC_SEGREL32;
4577 /* Get into the right seg/subseg. This may involve creating
4578 the seg the first time through. Make sure to have the
4579 old seg/subseg so that we can reset things when we are done. */
4580 seg = bfd_get_section_by_name (stdoutput, UNWIND_SECTION_NAME);
4581 if (seg == ASEC_NULL)
4583 seg = bfd_make_section_old_way (stdoutput, UNWIND_SECTION_NAME);
4584 bfd_set_section_flags (stdoutput, seg,
4585 SEC_READONLY | SEC_HAS_CONTENTS
4586 | SEC_LOAD | SEC_RELOC | SEC_ALLOC | SEC_DATA);
4587 bfd_set_section_alignment (stdoutput, seg, 2);
4591 save_subseg = now_subseg;
4592 subseg_set (seg, 0);
4595 /* Get some space to hold relocation information for the unwind
4598 md_number_to_chars (p, 0, 4);
4600 /* Relocation info. for start offset of the function. */
4601 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
4602 call_info->start_symbol, (offsetT) 0,
4603 (expressionS *) NULL, 0, reloc,
4604 e_fsel, 32, 0, NULL);
4607 md_number_to_chars (p, 0, 4);
4609 /* Relocation info. for end offset of the function.
4611 Because we allow reductions of 32bit relocations for ELF, this will be
4612 reduced to section_sym + offset which avoids putting the temporary
4613 symbol into the symbol table. It (should) end up giving the same
4614 value as call_info->start_symbol + function size once the linker is
4615 finished with its work. */
4617 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
4618 call_info->end_symbol, (offsetT) 0,
4619 (expressionS *) NULL, 0, reloc,
4620 e_fsel, 32, 0, NULL);
4623 unwind = (char *) &call_info->ci_unwind;
4624 for (i = 8; i < sizeof (struct unwind_table); i++)
4628 FRAG_APPEND_1_CHAR (c);
4632 /* Return back to the original segment/subsegment. */
4633 subseg_set (save_seg, save_subseg);
4637 /* Process a .CALLINFO pseudo-op. This information is used later
4638 to build unwind descriptors and maybe one day to support
4639 .ENTER and .LEAVE. */
4642 pa_callinfo (unused)
4649 /* We must have a valid space and subspace. */
4650 pa_check_current_space_and_subspace ();
4653 /* .CALLINFO must appear within a procedure definition. */
4654 if (!within_procedure)
4655 as_bad (_(".callinfo is not within a procedure definition"));
4657 /* Mark the fact that we found the .CALLINFO for the
4658 current procedure. */
4659 callinfo_found = TRUE;
4661 /* Iterate over the .CALLINFO arguments. */
4662 while (!is_end_of_statement ())
4664 name = input_line_pointer;
4665 c = get_symbol_end ();
4666 /* Frame size specification. */
4667 if ((strncasecmp (name, "frame", 5) == 0))
4669 p = input_line_pointer;
4671 input_line_pointer++;
4672 temp = get_absolute_expression ();
4673 if ((temp & 0x3) != 0)
4675 as_bad (_("FRAME parameter must be a multiple of 8: %d\n"), temp);
4679 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4680 last_call_info->ci_unwind.descriptor.frame_size = temp / 8;
4683 /* Entry register (GR, GR and SR) specifications. */
4684 else if ((strncasecmp (name, "entry_gr", 8) == 0))
4686 p = input_line_pointer;
4688 input_line_pointer++;
4689 temp = get_absolute_expression ();
4690 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4691 even though %r19 is caller saved. I think this is a bug in
4692 the HP assembler, and we are not going to emulate it. */
4693 if (temp < 3 || temp > 18)
4694 as_bad (_("Value for ENTRY_GR must be in the range 3..18\n"));
4695 last_call_info->ci_unwind.descriptor.entry_gr = temp - 2;
4697 else if ((strncasecmp (name, "entry_fr", 8) == 0))
4699 p = input_line_pointer;
4701 input_line_pointer++;
4702 temp = get_absolute_expression ();
4703 /* Similarly the HP assembler takes 31 as the high bound even
4704 though %fr21 is the last callee saved floating point register. */
4705 if (temp < 12 || temp > 21)
4706 as_bad (_("Value for ENTRY_FR must be in the range 12..21\n"));
4707 last_call_info->ci_unwind.descriptor.entry_fr = temp - 11;
4709 else if ((strncasecmp (name, "entry_sr", 8) == 0))
4711 p = input_line_pointer;
4713 input_line_pointer++;
4714 temp = get_absolute_expression ();
4716 as_bad (_("Value for ENTRY_SR must be 3\n"));
4718 /* Note whether or not this function performs any calls. */
4719 else if ((strncasecmp (name, "calls", 5) == 0) ||
4720 (strncasecmp (name, "caller", 6) == 0))
4722 p = input_line_pointer;
4725 else if ((strncasecmp (name, "no_calls", 8) == 0))
4727 p = input_line_pointer;
4730 /* Should RP be saved into the stack. */
4731 else if ((strncasecmp (name, "save_rp", 7) == 0))
4733 p = input_line_pointer;
4735 last_call_info->ci_unwind.descriptor.save_rp = 1;
4737 /* Likewise for SP. */
4738 else if ((strncasecmp (name, "save_sp", 7) == 0))
4740 p = input_line_pointer;
4742 last_call_info->ci_unwind.descriptor.save_sp = 1;
4744 /* Is this an unwindable procedure. If so mark it so
4745 in the unwind descriptor. */
4746 else if ((strncasecmp (name, "no_unwind", 9) == 0))
4748 p = input_line_pointer;
4750 last_call_info->ci_unwind.descriptor.cannot_unwind = 1;
4752 /* Is this an interrupt routine. If so mark it in the
4753 unwind descriptor. */
4754 else if ((strncasecmp (name, "hpux_int", 7) == 0))
4756 p = input_line_pointer;
4758 last_call_info->ci_unwind.descriptor.hpux_interrupt_marker = 1;
4760 /* Is this a millicode routine. "millicode" isn't in my
4761 assembler manual, but my copy is old. The HP assembler
4762 accepts it, and there's a place in the unwind descriptor
4763 to drop the information, so we'll accept it too. */
4764 else if ((strncasecmp (name, "millicode", 9) == 0))
4766 p = input_line_pointer;
4768 last_call_info->ci_unwind.descriptor.millicode = 1;
4772 as_bad (_("Invalid .CALLINFO argument: %s"), name);
4773 *input_line_pointer = c;
4775 if (!is_end_of_statement ())
4776 input_line_pointer++;
4779 demand_empty_rest_of_line ();
4782 /* Switch into the code subspace. */
4789 current_space = is_defined_space ("$TEXT$");
4791 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
4794 pa_undefine_label ();
4797 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4798 the .comm pseudo-op has the following symtax:
4800 <label> .comm <length>
4802 where <label> is optional and is a symbol whose address will be the start of
4803 a block of memory <length> bytes long. <length> must be an absolute
4804 expression. <length> bytes will be allocated in the current space
4807 Also note the label may not even be on the same line as the .comm.
4809 This difference in syntax means the colon function will be called
4810 on the symbol before we arrive in pa_comm. colon will set a number
4811 of attributes of the symbol that need to be fixed here. In particular
4812 the value, section pointer, fragment pointer, flags, etc. What
4815 This also makes error detection all but impossible. */
4823 label_symbol_struct *label_symbol = pa_get_label ();
4826 symbol = label_symbol->lss_label;
4831 size = get_absolute_expression ();
4835 S_SET_VALUE (symbol, size);
4836 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
4837 S_SET_EXTERNAL (symbol);
4839 /* colon() has already set the frag to the current location in the
4840 current subspace; we need to reset the fragment to the zero address
4841 fragment. We also need to reset the segment pointer. */
4842 symbol_set_frag (symbol, &zero_address_frag);
4844 demand_empty_rest_of_line ();
4847 /* Process a .END pseudo-op. */
4853 demand_empty_rest_of_line ();
4856 /* Process a .ENTER pseudo-op. This is not supported. */
4862 /* We must have a valid space and subspace. */
4863 pa_check_current_space_and_subspace ();
4866 as_bad (_("The .ENTER pseudo-op is not supported"));
4867 demand_empty_rest_of_line ();
4870 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4877 /* We must have a valid space and subspace. */
4878 pa_check_current_space_and_subspace ();
4881 if (!within_procedure)
4882 as_bad (_("Misplaced .entry. Ignored."));
4885 if (!callinfo_found)
4886 as_bad (_("Missing .callinfo."));
4888 demand_empty_rest_of_line ();
4889 within_entry_exit = TRUE;
4892 /* SOM defers building of unwind descriptors until the link phase.
4893 The assembler is responsible for creating an R_ENTRY relocation
4894 to mark the beginning of a region and hold the unwind bits, and
4895 for creating an R_EXIT relocation to mark the end of the region.
4897 FIXME. ELF should be using the same conventions! The problem
4898 is an unwind requires too much relocation space. Hmmm. Maybe
4899 if we split the unwind bits up between the relocations which
4900 denote the entry and exit points. */
4901 if (last_call_info->start_symbol != NULL)
4903 char *where = frag_more (0);
4905 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4906 NULL, (offsetT) 0, NULL,
4907 0, R_HPPA_ENTRY, e_fsel, 0, 0,
4908 (int *) &last_call_info->ci_unwind.descriptor);
4913 /* Handle a .EQU pseudo-op. */
4919 label_symbol_struct *label_symbol = pa_get_label ();
4924 symbol = label_symbol->lss_label;
4926 S_SET_VALUE (symbol, pa_parse_number (&input_line_pointer, 0));
4928 S_SET_VALUE (symbol, (unsigned int) get_absolute_expression ());
4929 S_SET_SEGMENT (symbol, bfd_abs_section_ptr);
4934 as_bad (_(".REG must use a label"));
4936 as_bad (_(".EQU must use a label"));
4939 pa_undefine_label ();
4940 demand_empty_rest_of_line ();
4943 /* Helper function. Does processing for the end of a function. This
4944 usually involves creating some relocations or building special
4945 symbols to mark the end of the function. */
4952 where = frag_more (0);
4955 /* Mark the end of the function, stuff away the location of the frag
4956 for the end of the function, and finally call pa_build_unwind_subspace
4957 to add an entry in the unwind table. */
4958 hppa_elf_mark_end_of_function ();
4959 pa_build_unwind_subspace (last_call_info);
4961 /* SOM defers building of unwind descriptors until the link phase.
4962 The assembler is responsible for creating an R_ENTRY relocation
4963 to mark the beginning of a region and hold the unwind bits, and
4964 for creating an R_EXIT relocation to mark the end of the region.
4966 FIXME. ELF should be using the same conventions! The problem
4967 is an unwind requires too much relocation space. Hmmm. Maybe
4968 if we split the unwind bits up between the relocations which
4969 denote the entry and exit points. */
4970 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4972 NULL, 0, R_HPPA_EXIT, e_fsel, 0, 0,
4973 (int *) &last_call_info->ci_unwind.descriptor + 1);
4977 /* Process a .EXIT pseudo-op. */
4984 /* We must have a valid space and subspace. */
4985 pa_check_current_space_and_subspace ();
4988 if (!within_procedure)
4989 as_bad (_(".EXIT must appear within a procedure"));
4992 if (!callinfo_found)
4993 as_bad (_("Missing .callinfo"));
4996 if (!within_entry_exit)
4997 as_bad (_("No .ENTRY for this .EXIT"));
5000 within_entry_exit = FALSE;
5005 demand_empty_rest_of_line ();
5008 /* Process a .EXPORT directive. This makes functions external
5009 and provides information such as argument relocation entries
5019 name = input_line_pointer;
5020 c = get_symbol_end ();
5021 /* Make sure the given symbol exists. */
5022 if ((symbol = symbol_find_or_make (name)) == NULL)
5024 as_bad (_("Cannot define export symbol: %s\n"), name);
5025 p = input_line_pointer;
5027 input_line_pointer++;
5031 /* OK. Set the external bits and process argument relocations. */
5032 S_SET_EXTERNAL (symbol);
5033 p = input_line_pointer;
5035 if (!is_end_of_statement ())
5037 input_line_pointer++;
5038 pa_type_args (symbol, 1);
5042 demand_empty_rest_of_line ();
5045 /* Helper function to process arguments to a .EXPORT pseudo-op. */
5048 pa_type_args (symbolP, is_export)
5053 unsigned int temp, arg_reloc;
5054 pa_symbol_type type = SYMBOL_TYPE_UNKNOWN;
5055 obj_symbol_type *symbol = (obj_symbol_type *) symbol_get_bfdsym (symbolP);
5057 if (strncasecmp (input_line_pointer, "absolute", 8) == 0)
5060 input_line_pointer += 8;
5061 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5062 S_SET_SEGMENT (symbolP, bfd_abs_section_ptr);
5063 type = SYMBOL_TYPE_ABSOLUTE;
5065 else if (strncasecmp (input_line_pointer, "code", 4) == 0)
5067 input_line_pointer += 4;
5068 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
5069 instead one should be IMPORTing/EXPORTing ENTRY types.
5071 Complain if one tries to EXPORT a CODE type since that's never
5072 done. Both GCC and HP C still try to IMPORT CODE types, so
5073 silently fix them to be ENTRY types. */
5074 if (S_IS_FUNCTION (symbolP))
5077 as_tsktsk (_("Using ENTRY rather than CODE in export directive for %s"),
5078 S_GET_NAME (symbolP));
5080 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5081 type = SYMBOL_TYPE_ENTRY;
5085 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5086 type = SYMBOL_TYPE_CODE;
5089 else if (strncasecmp (input_line_pointer, "data", 4) == 0)
5091 input_line_pointer += 4;
5092 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5093 type = SYMBOL_TYPE_DATA;
5095 else if ((strncasecmp (input_line_pointer, "entry", 5) == 0))
5097 input_line_pointer += 5;
5098 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5099 type = SYMBOL_TYPE_ENTRY;
5101 else if (strncasecmp (input_line_pointer, "millicode", 9) == 0)
5103 input_line_pointer += 9;
5104 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5105 type = SYMBOL_TYPE_MILLICODE;
5107 else if (strncasecmp (input_line_pointer, "plabel", 6) == 0)
5109 input_line_pointer += 6;
5110 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5111 type = SYMBOL_TYPE_PLABEL;
5113 else if (strncasecmp (input_line_pointer, "pri_prog", 8) == 0)
5115 input_line_pointer += 8;
5116 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5117 type = SYMBOL_TYPE_PRI_PROG;
5119 else if (strncasecmp (input_line_pointer, "sec_prog", 8) == 0)
5121 input_line_pointer += 8;
5122 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5123 type = SYMBOL_TYPE_SEC_PROG;
5126 /* SOM requires much more information about symbol types
5127 than BFD understands. This is how we get this information
5128 to the SOM BFD backend. */
5129 #ifdef obj_set_symbol_type
5130 obj_set_symbol_type (symbol_get_bfdsym (symbolP), (int) type);
5133 /* Now that the type of the exported symbol has been handled,
5134 handle any argument relocation information. */
5135 while (!is_end_of_statement ())
5137 if (*input_line_pointer == ',')
5138 input_line_pointer++;
5139 name = input_line_pointer;
5140 c = get_symbol_end ();
5141 /* Argument sources. */
5142 if ((strncasecmp (name, "argw", 4) == 0))
5144 p = input_line_pointer;
5146 input_line_pointer++;
5147 temp = atoi (name + 4);
5148 name = input_line_pointer;
5149 c = get_symbol_end ();
5150 arg_reloc = pa_align_arg_reloc (temp, pa_build_arg_reloc (name));
5152 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
5154 *input_line_pointer = c;
5156 /* The return value. */
5157 else if ((strncasecmp (name, "rtnval", 6)) == 0)
5159 p = input_line_pointer;
5161 input_line_pointer++;
5162 name = input_line_pointer;
5163 c = get_symbol_end ();
5164 arg_reloc = pa_build_arg_reloc (name);
5166 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
5168 *input_line_pointer = c;
5170 /* Privelege level. */
5171 else if ((strncasecmp (name, "priv_lev", 8)) == 0)
5173 p = input_line_pointer;
5175 input_line_pointer++;
5176 temp = atoi (input_line_pointer);
5178 symbol->tc_data.ap.hppa_priv_level = temp;
5180 c = get_symbol_end ();
5181 *input_line_pointer = c;
5185 as_bad (_("Undefined .EXPORT/.IMPORT argument (ignored): %s"), name);
5186 p = input_line_pointer;
5189 if (!is_end_of_statement ())
5190 input_line_pointer++;
5194 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
5195 assembly file must either be defined in the assembly file, or
5196 explicitly IMPORTED from another. */
5205 name = input_line_pointer;
5206 c = get_symbol_end ();
5208 symbol = symbol_find (name);
5209 /* Ugh. We might be importing a symbol defined earlier in the file,
5210 in which case all the code below will really screw things up
5211 (set the wrong segment, symbol flags & type, etc). */
5212 if (symbol == NULL || !S_IS_DEFINED (symbol))
5214 symbol = symbol_find_or_make (name);
5215 p = input_line_pointer;
5218 if (!is_end_of_statement ())
5220 input_line_pointer++;
5221 pa_type_args (symbol, 0);
5225 /* Sigh. To be compatable with the HP assembler and to help
5226 poorly written assembly code, we assign a type based on
5227 the the current segment. Note only BSF_FUNCTION really
5228 matters, we do not need to set the full SYMBOL_TYPE_* info. */
5229 if (now_seg == text_section)
5230 symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION;
5232 /* If the section is undefined, then the symbol is undefined
5233 Since this is an import, leave the section undefined. */
5234 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
5239 /* The symbol was already defined. Just eat everything up to
5240 the end of the current statement. */
5241 while (!is_end_of_statement ())
5242 input_line_pointer++;
5245 demand_empty_rest_of_line ();
5248 /* Handle a .LABEL pseudo-op. */
5256 name = input_line_pointer;
5257 c = get_symbol_end ();
5259 if (strlen (name) > 0)
5262 p = input_line_pointer;
5267 as_warn (_("Missing label name on .LABEL"));
5270 if (!is_end_of_statement ())
5272 as_warn (_("extra .LABEL arguments ignored."));
5273 ignore_rest_of_line ();
5275 demand_empty_rest_of_line ();
5278 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
5285 /* We must have a valid space and subspace. */
5286 pa_check_current_space_and_subspace ();
5289 as_bad (_("The .LEAVE pseudo-op is not supported"));
5290 demand_empty_rest_of_line ();
5293 /* Handle a .LEVEL pseudo-op. */
5301 level = input_line_pointer;
5302 if (strncmp (level, "1.0", 3) == 0)
5304 input_line_pointer += 3;
5305 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10))
5306 as_warn (_("could not set architecture and machine"));
5308 else if (strncmp (level, "1.1", 3) == 0)
5310 input_line_pointer += 3;
5311 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 11))
5312 as_warn (_("could not set architecture and machine"));
5314 else if (strncmp (level, "2.0w", 4) == 0)
5316 input_line_pointer += 4;
5317 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 25))
5318 as_warn (_("could not set architecture and machine"));
5320 else if (strncmp (level, "2.0", 3) == 0)
5322 input_line_pointer += 3;
5323 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 20))
5324 as_warn (_("could not set architecture and machine"));
5328 as_bad (_("Unrecognized .LEVEL argument\n"));
5329 ignore_rest_of_line ();
5331 demand_empty_rest_of_line ();
5334 /* Handle a .ORIGIN pseudo-op. */
5341 /* We must have a valid space and subspace. */
5342 pa_check_current_space_and_subspace ();
5346 pa_undefine_label ();
5349 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
5350 is for static functions. FIXME. Should share more code with .EXPORT. */
5359 name = input_line_pointer;
5360 c = get_symbol_end ();
5362 if ((symbol = symbol_find_or_make (name)) == NULL)
5364 as_bad (_("Cannot define static symbol: %s\n"), name);
5365 p = input_line_pointer;
5367 input_line_pointer++;
5371 S_CLEAR_EXTERNAL (symbol);
5372 p = input_line_pointer;
5374 if (!is_end_of_statement ())
5376 input_line_pointer++;
5377 pa_type_args (symbol, 0);
5381 demand_empty_rest_of_line ();
5384 /* Handle a .PROC pseudo-op. It is used to mark the beginning
5385 of a procedure from a syntatical point of view. */
5391 struct call_info *call_info;
5394 /* We must have a valid space and subspace. */
5395 pa_check_current_space_and_subspace ();
5398 if (within_procedure)
5399 as_fatal (_("Nested procedures"));
5401 /* Reset global variables for new procedure. */
5402 callinfo_found = FALSE;
5403 within_procedure = TRUE;
5405 /* Create another call_info structure. */
5406 call_info = (struct call_info *) xmalloc (sizeof (struct call_info));
5409 as_fatal (_("Cannot allocate unwind descriptor\n"));
5411 memset (call_info, 0, sizeof (struct call_info));
5413 call_info->ci_next = NULL;
5415 if (call_info_root == NULL)
5417 call_info_root = call_info;
5418 last_call_info = call_info;
5422 last_call_info->ci_next = call_info;
5423 last_call_info = call_info;
5426 /* set up defaults on call_info structure */
5428 call_info->ci_unwind.descriptor.cannot_unwind = 0;
5429 call_info->ci_unwind.descriptor.region_desc = 1;
5430 call_info->ci_unwind.descriptor.hpux_interrupt_marker = 0;
5432 /* If we got a .PROC pseudo-op, we know that the function is defined
5433 locally. Make sure it gets into the symbol table. */
5435 label_symbol_struct *label_symbol = pa_get_label ();
5439 if (label_symbol->lss_label)
5441 last_call_info->start_symbol = label_symbol->lss_label;
5442 symbol_get_bfdsym (label_symbol->lss_label)->flags |= BSF_FUNCTION;
5445 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5448 last_call_info->start_symbol = NULL;
5451 demand_empty_rest_of_line ();
5454 /* Process the syntatical end of a procedure. Make sure all the
5455 appropriate pseudo-ops were found within the procedure. */
5463 /* We must have a valid space and subspace. */
5464 pa_check_current_space_and_subspace ();
5467 /* If we are within a procedure definition, make sure we've
5468 defined a label for the procedure; handle case where the
5469 label was defined after the .PROC directive.
5471 Note there's not need to diddle with the segment or fragment
5472 for the label symbol in this case. We have already switched
5473 into the new $CODE$ subspace at this point. */
5474 if (within_procedure && last_call_info->start_symbol == NULL)
5476 label_symbol_struct *label_symbol = pa_get_label ();
5480 if (label_symbol->lss_label)
5482 last_call_info->start_symbol = label_symbol->lss_label;
5483 symbol_get_bfdsym (label_symbol->lss_label)->flags
5486 /* Also handle allocation of a fixup to hold the unwind
5487 information when the label appears after the proc/procend. */
5488 if (within_entry_exit)
5490 char *where = frag_more (0);
5492 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
5493 NULL, (offsetT) 0, NULL,
5494 0, R_HPPA_ENTRY, e_fsel, 0, 0,
5495 (int *) &last_call_info->ci_unwind.descriptor);
5500 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5503 as_bad (_("Missing function name for .PROC"));
5506 if (!within_procedure)
5507 as_bad (_("misplaced .procend"));
5509 if (!callinfo_found)
5510 as_bad (_("Missing .callinfo for this procedure"));
5512 if (within_entry_exit)
5513 as_bad (_("Missing .EXIT for a .ENTRY"));
5516 /* ELF needs to mark the end of each function so that it can compute
5517 the size of the function (apparently its needed in the symbol table). */
5518 hppa_elf_mark_end_of_function ();
5521 within_procedure = FALSE;
5522 demand_empty_rest_of_line ();
5523 pa_undefine_label ();
5526 /* If VALUE is an exact power of two between zero and 2^31, then
5527 return log2 (VALUE). Else return -1. */
5535 while ((1 << shift) != value && shift < 32)
5546 /* Check to make sure we have a valid space and subspace. */
5549 pa_check_current_space_and_subspace ()
5551 if (current_space == NULL)
5552 as_fatal (_("Not in a space.\n"));
5554 if (current_subspace == NULL)
5555 as_fatal (_("Not in a subspace.\n"));
5558 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5559 then create a new space entry to hold the information specified
5560 by the parameters to the .SPACE directive. */
5562 static sd_chain_struct *
5563 pa_parse_space_stmt (space_name, create_flag)
5567 char *name, *ptemp, c;
5568 char loadable, defined, private, sort;
5570 asection *seg = NULL;
5571 sd_chain_struct *space;
5573 /* load default values */
5579 if (strcmp (space_name, "$TEXT$") == 0)
5581 seg = pa_def_spaces[0].segment;
5582 defined = pa_def_spaces[0].defined;
5583 private = pa_def_spaces[0].private;
5584 sort = pa_def_spaces[0].sort;
5585 spnum = pa_def_spaces[0].spnum;
5587 else if (strcmp (space_name, "$PRIVATE$") == 0)
5589 seg = pa_def_spaces[1].segment;
5590 defined = pa_def_spaces[1].defined;
5591 private = pa_def_spaces[1].private;
5592 sort = pa_def_spaces[1].sort;
5593 spnum = pa_def_spaces[1].spnum;
5596 if (!is_end_of_statement ())
5598 print_errors = FALSE;
5599 ptemp = input_line_pointer + 1;
5600 /* First see if the space was specified as a number rather than
5601 as a name. According to the PA assembly manual the rest of
5602 the line should be ignored. */
5603 temp = pa_parse_number (&ptemp, 0);
5607 input_line_pointer = ptemp;
5611 while (!is_end_of_statement ())
5613 input_line_pointer++;
5614 name = input_line_pointer;
5615 c = get_symbol_end ();
5616 if ((strncasecmp (name, "spnum", 5) == 0))
5618 *input_line_pointer = c;
5619 input_line_pointer++;
5620 spnum = get_absolute_expression ();
5622 else if ((strncasecmp (name, "sort", 4) == 0))
5624 *input_line_pointer = c;
5625 input_line_pointer++;
5626 sort = get_absolute_expression ();
5628 else if ((strncasecmp (name, "unloadable", 10) == 0))
5630 *input_line_pointer = c;
5633 else if ((strncasecmp (name, "notdefined", 10) == 0))
5635 *input_line_pointer = c;
5638 else if ((strncasecmp (name, "private", 7) == 0))
5640 *input_line_pointer = c;
5645 as_bad (_("Invalid .SPACE argument"));
5646 *input_line_pointer = c;
5647 if (!is_end_of_statement ())
5648 input_line_pointer++;
5652 print_errors = TRUE;
5655 if (create_flag && seg == NULL)
5656 seg = subseg_new (space_name, 0);
5658 /* If create_flag is nonzero, then create the new space with
5659 the attributes computed above. Else set the values in
5660 an already existing space -- this can only happen for
5661 the first occurence of a built-in space. */
5663 space = create_new_space (space_name, spnum, loadable, defined,
5664 private, sort, seg, 1);
5667 space = is_defined_space (space_name);
5668 SPACE_SPNUM (space) = spnum;
5669 SPACE_DEFINED (space) = defined & 1;
5670 SPACE_USER_DEFINED (space) = 1;
5673 #ifdef obj_set_section_attributes
5674 obj_set_section_attributes (seg, defined, private, sort, spnum);
5680 /* Handle a .SPACE pseudo-op; this switches the current space to the
5681 given space, creating the new space if necessary. */
5687 char *name, c, *space_name, *save_s;
5689 sd_chain_struct *sd_chain;
5691 if (within_procedure)
5693 as_bad (_("Can\'t change spaces within a procedure definition. Ignored"));
5694 ignore_rest_of_line ();
5698 /* Check for some of the predefined spaces. FIXME: most of the code
5699 below is repeated several times, can we extract the common parts
5700 and place them into a subroutine or something similar? */
5701 /* FIXME Is this (and the next IF stmt) really right?
5702 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5703 if (strncmp (input_line_pointer, "$TEXT$", 6) == 0)
5705 input_line_pointer += 6;
5706 sd_chain = is_defined_space ("$TEXT$");
5707 if (sd_chain == NULL)
5708 sd_chain = pa_parse_space_stmt ("$TEXT$", 1);
5709 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5710 sd_chain = pa_parse_space_stmt ("$TEXT$", 0);
5712 current_space = sd_chain;
5713 subseg_set (text_section, sd_chain->sd_last_subseg);
5715 = pa_subsegment_to_subspace (text_section,
5716 sd_chain->sd_last_subseg);
5717 demand_empty_rest_of_line ();
5720 if (strncmp (input_line_pointer, "$PRIVATE$", 9) == 0)
5722 input_line_pointer += 9;
5723 sd_chain = is_defined_space ("$PRIVATE$");
5724 if (sd_chain == NULL)
5725 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 1);
5726 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5727 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 0);
5729 current_space = sd_chain;
5730 subseg_set (data_section, sd_chain->sd_last_subseg);
5732 = pa_subsegment_to_subspace (data_section,
5733 sd_chain->sd_last_subseg);
5734 demand_empty_rest_of_line ();
5737 if (!strncasecmp (input_line_pointer,
5738 GDB_DEBUG_SPACE_NAME,
5739 strlen (GDB_DEBUG_SPACE_NAME)))
5741 input_line_pointer += strlen (GDB_DEBUG_SPACE_NAME);
5742 sd_chain = is_defined_space (GDB_DEBUG_SPACE_NAME);
5743 if (sd_chain == NULL)
5744 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 1);
5745 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5746 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 0);
5748 current_space = sd_chain;
5751 asection *gdb_section
5752 = bfd_make_section_old_way (stdoutput, GDB_DEBUG_SPACE_NAME);
5754 subseg_set (gdb_section, sd_chain->sd_last_subseg);
5756 = pa_subsegment_to_subspace (gdb_section,
5757 sd_chain->sd_last_subseg);
5759 demand_empty_rest_of_line ();
5763 /* It could be a space specified by number. */
5765 save_s = input_line_pointer;
5766 if ((temp = pa_parse_number (&input_line_pointer, 0)) >= 0)
5768 if ((sd_chain = pa_find_space_by_number (temp)))
5770 current_space = sd_chain;
5772 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
5774 = pa_subsegment_to_subspace (sd_chain->sd_seg,
5775 sd_chain->sd_last_subseg);
5776 demand_empty_rest_of_line ();
5781 /* Not a number, attempt to create a new space. */
5783 input_line_pointer = save_s;
5784 name = input_line_pointer;
5785 c = get_symbol_end ();
5786 space_name = xmalloc (strlen (name) + 1);
5787 strcpy (space_name, name);
5788 *input_line_pointer = c;
5790 sd_chain = pa_parse_space_stmt (space_name, 1);
5791 current_space = sd_chain;
5793 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
5794 current_subspace = pa_subsegment_to_subspace (sd_chain->sd_seg,
5795 sd_chain->sd_last_subseg);
5796 demand_empty_rest_of_line ();
5800 /* Switch to a new space. (I think). FIXME. */
5809 sd_chain_struct *space;
5811 name = input_line_pointer;
5812 c = get_symbol_end ();
5813 space = is_defined_space (name);
5817 md_number_to_chars (p, SPACE_SPNUM (space), 4);
5820 as_warn (_("Undefined space: '%s' Assuming space number = 0."), name);
5822 *input_line_pointer = c;
5823 demand_empty_rest_of_line ();
5826 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5827 given subspace, creating the new subspace if necessary.
5829 FIXME. Should mirror pa_space more closely, in particular how
5830 they're broken up into subroutines. */
5833 pa_subspace (create_new)
5836 char *name, *ss_name, c;
5837 char loadable, code_only, common, dup_common, zero, sort;
5838 int i, access, space_index, alignment, quadrant, applicable, flags;
5839 sd_chain_struct *space;
5840 ssd_chain_struct *ssd;
5843 if (current_space == NULL)
5844 as_fatal (_("Must be in a space before changing or declaring subspaces.\n"));
5846 if (within_procedure)
5848 as_bad (_("Can\'t change subspaces within a procedure definition. Ignored"));
5849 ignore_rest_of_line ();
5853 name = input_line_pointer;
5854 c = get_symbol_end ();
5855 ss_name = xmalloc (strlen (name) + 1);
5856 strcpy (ss_name, name);
5857 *input_line_pointer = c;
5859 /* Load default values. */
5871 space = current_space;
5875 ssd = is_defined_subspace (ss_name);
5876 /* Allow user to override the builtin attributes of subspaces. But
5877 only allow the attributes to be changed once! */
5878 if (ssd && SUBSPACE_DEFINED (ssd))
5880 subseg_set (ssd->ssd_seg, ssd->ssd_subseg);
5881 current_subspace = ssd;
5882 if (!is_end_of_statement ())
5883 as_warn (_("Parameters of an existing subspace can\'t be modified"));
5884 demand_empty_rest_of_line ();
5889 /* A new subspace. Load default values if it matches one of
5890 the builtin subspaces. */
5892 while (pa_def_subspaces[i].name)
5894 if (strcasecmp (pa_def_subspaces[i].name, ss_name) == 0)
5896 loadable = pa_def_subspaces[i].loadable;
5897 common = pa_def_subspaces[i].common;
5898 dup_common = pa_def_subspaces[i].dup_common;
5899 code_only = pa_def_subspaces[i].code_only;
5900 zero = pa_def_subspaces[i].zero;
5901 space_index = pa_def_subspaces[i].space_index;
5902 alignment = pa_def_subspaces[i].alignment;
5903 quadrant = pa_def_subspaces[i].quadrant;
5904 access = pa_def_subspaces[i].access;
5905 sort = pa_def_subspaces[i].sort;
5912 /* We should be working with a new subspace now. Fill in
5913 any information as specified by the user. */
5914 if (!is_end_of_statement ())
5916 input_line_pointer++;
5917 while (!is_end_of_statement ())
5919 name = input_line_pointer;
5920 c = get_symbol_end ();
5921 if ((strncasecmp (name, "quad", 4) == 0))
5923 *input_line_pointer = c;
5924 input_line_pointer++;
5925 quadrant = get_absolute_expression ();
5927 else if ((strncasecmp (name, "align", 5) == 0))
5929 *input_line_pointer = c;
5930 input_line_pointer++;
5931 alignment = get_absolute_expression ();
5932 if (log2 (alignment) == -1)
5934 as_bad (_("Alignment must be a power of 2"));
5938 else if ((strncasecmp (name, "access", 6) == 0))
5940 *input_line_pointer = c;
5941 input_line_pointer++;
5942 access = get_absolute_expression ();
5944 else if ((strncasecmp (name, "sort", 4) == 0))
5946 *input_line_pointer = c;
5947 input_line_pointer++;
5948 sort = get_absolute_expression ();
5950 else if ((strncasecmp (name, "code_only", 9) == 0))
5952 *input_line_pointer = c;
5955 else if ((strncasecmp (name, "unloadable", 10) == 0))
5957 *input_line_pointer = c;
5960 else if ((strncasecmp (name, "common", 6) == 0))
5962 *input_line_pointer = c;
5965 else if ((strncasecmp (name, "dup_comm", 8) == 0))
5967 *input_line_pointer = c;
5970 else if ((strncasecmp (name, "zero", 4) == 0))
5972 *input_line_pointer = c;
5975 else if ((strncasecmp (name, "first", 5) == 0))
5976 as_bad (_("FIRST not supported as a .SUBSPACE argument"));
5978 as_bad (_("Invalid .SUBSPACE argument"));
5979 if (!is_end_of_statement ())
5980 input_line_pointer++;
5984 /* Compute a reasonable set of BFD flags based on the information
5985 in the .subspace directive. */
5986 applicable = bfd_applicable_section_flags (stdoutput);
5989 flags |= (SEC_ALLOC | SEC_LOAD);
5992 if (common || dup_common)
5993 flags |= SEC_IS_COMMON;
5995 flags |= SEC_RELOC | SEC_HAS_CONTENTS;
5997 /* This is a zero-filled subspace (eg BSS). */
5999 flags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
6001 applicable &= flags;
6003 /* If this is an existing subspace, then we want to use the
6004 segment already associated with the subspace.
6006 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
6007 lots of sections. It might be a problem in the PA ELF
6008 code, I do not know yet. For now avoid creating anything
6009 but the "standard" sections for ELF. */
6011 section = subseg_force_new (ss_name, 0);
6013 section = ssd->ssd_seg;
6015 section = subseg_new (ss_name, 0);
6018 seg_info (section)->bss = 1;
6020 /* Now set the flags. */
6021 bfd_set_section_flags (stdoutput, section, applicable);
6023 /* Record any alignment request for this section. */
6024 record_alignment (section, log2 (alignment));
6026 /* Set the starting offset for this section. */
6027 bfd_set_section_vma (stdoutput, section,
6028 pa_subspace_start (space, quadrant));
6030 /* Now that all the flags are set, update an existing subspace,
6031 or create a new one. */
6034 current_subspace = update_subspace (space, ss_name, loadable,
6035 code_only, common, dup_common,
6036 sort, zero, access, space_index,
6037 alignment, quadrant,
6040 current_subspace = create_new_subspace (space, ss_name, loadable,
6042 dup_common, zero, sort,
6043 access, space_index,
6044 alignment, quadrant, section);
6046 demand_empty_rest_of_line ();
6047 current_subspace->ssd_seg = section;
6048 subseg_set (current_subspace->ssd_seg, current_subspace->ssd_subseg);
6050 SUBSPACE_DEFINED (current_subspace) = 1;
6054 /* Create default space and subspace dictionaries. */
6061 space_dict_root = NULL;
6062 space_dict_last = NULL;
6065 while (pa_def_spaces[i].name)
6069 /* Pick the right name to use for the new section. */
6070 name = pa_def_spaces[i].name;
6072 pa_def_spaces[i].segment = subseg_new (name, 0);
6073 create_new_space (pa_def_spaces[i].name, pa_def_spaces[i].spnum,
6074 pa_def_spaces[i].loadable, pa_def_spaces[i].defined,
6075 pa_def_spaces[i].private, pa_def_spaces[i].sort,
6076 pa_def_spaces[i].segment, 0);
6081 while (pa_def_subspaces[i].name)
6084 int applicable, subsegment;
6085 asection *segment = NULL;
6086 sd_chain_struct *space;
6088 /* Pick the right name for the new section and pick the right
6089 subsegment number. */
6090 name = pa_def_subspaces[i].name;
6093 /* Create the new section. */
6094 segment = subseg_new (name, subsegment);
6097 /* For SOM we want to replace the standard .text, .data, and .bss
6098 sections with our own. We also want to set BFD flags for
6099 all the built-in subspaces. */
6100 if (!strcmp (pa_def_subspaces[i].name, "$CODE$"))
6102 text_section = segment;
6103 applicable = bfd_applicable_section_flags (stdoutput);
6104 bfd_set_section_flags (stdoutput, segment,
6105 applicable & (SEC_ALLOC | SEC_LOAD
6106 | SEC_RELOC | SEC_CODE
6108 | SEC_HAS_CONTENTS));
6110 else if (!strcmp (pa_def_subspaces[i].name, "$DATA$"))
6112 data_section = segment;
6113 applicable = bfd_applicable_section_flags (stdoutput);
6114 bfd_set_section_flags (stdoutput, segment,
6115 applicable & (SEC_ALLOC | SEC_LOAD
6117 | SEC_HAS_CONTENTS));
6121 else if (!strcmp (pa_def_subspaces[i].name, "$BSS$"))
6123 bss_section = segment;
6124 applicable = bfd_applicable_section_flags (stdoutput);
6125 bfd_set_section_flags (stdoutput, segment,
6126 applicable & SEC_ALLOC);
6128 else if (!strcmp (pa_def_subspaces[i].name, "$LIT$"))
6130 applicable = bfd_applicable_section_flags (stdoutput);
6131 bfd_set_section_flags (stdoutput, segment,
6132 applicable & (SEC_ALLOC | SEC_LOAD
6135 | SEC_HAS_CONTENTS));
6137 else if (!strcmp (pa_def_subspaces[i].name, "$MILLICODE$"))
6139 applicable = bfd_applicable_section_flags (stdoutput);
6140 bfd_set_section_flags (stdoutput, segment,
6141 applicable & (SEC_ALLOC | SEC_LOAD
6144 | SEC_HAS_CONTENTS));
6146 else if (!strcmp (pa_def_subspaces[i].name, "$UNWIND$"))
6148 applicable = bfd_applicable_section_flags (stdoutput);
6149 bfd_set_section_flags (stdoutput, segment,
6150 applicable & (SEC_ALLOC | SEC_LOAD
6153 | SEC_HAS_CONTENTS));
6156 /* Find the space associated with this subspace. */
6157 space = pa_segment_to_space (pa_def_spaces[pa_def_subspaces[i].
6158 def_space_index].segment);
6161 as_fatal (_("Internal error: Unable to find containing space for %s."),
6162 pa_def_subspaces[i].name);
6165 create_new_subspace (space, name,
6166 pa_def_subspaces[i].loadable,
6167 pa_def_subspaces[i].code_only,
6168 pa_def_subspaces[i].common,
6169 pa_def_subspaces[i].dup_common,
6170 pa_def_subspaces[i].zero,
6171 pa_def_subspaces[i].sort,
6172 pa_def_subspaces[i].access,
6173 pa_def_subspaces[i].space_index,
6174 pa_def_subspaces[i].alignment,
6175 pa_def_subspaces[i].quadrant,
6183 /* Create a new space NAME, with the appropriate flags as defined
6184 by the given parameters. */
6186 static sd_chain_struct *
6187 create_new_space (name, spnum, loadable, defined, private,
6188 sort, seg, user_defined)
6198 sd_chain_struct *chain_entry;
6200 chain_entry = (sd_chain_struct *) xmalloc (sizeof (sd_chain_struct));
6202 as_fatal (_("Out of memory: could not allocate new space chain entry: %s\n"),
6205 SPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6206 strcpy (SPACE_NAME (chain_entry), name);
6207 SPACE_DEFINED (chain_entry) = defined;
6208 SPACE_USER_DEFINED (chain_entry) = user_defined;
6209 SPACE_SPNUM (chain_entry) = spnum;
6211 chain_entry->sd_seg = seg;
6212 chain_entry->sd_last_subseg = -1;
6213 chain_entry->sd_subspaces = NULL;
6214 chain_entry->sd_next = NULL;
6216 /* Find spot for the new space based on its sort key. */
6217 if (!space_dict_last)
6218 space_dict_last = chain_entry;
6220 if (space_dict_root == NULL)
6221 space_dict_root = chain_entry;
6224 sd_chain_struct *chain_pointer;
6225 sd_chain_struct *prev_chain_pointer;
6227 chain_pointer = space_dict_root;
6228 prev_chain_pointer = NULL;
6230 while (chain_pointer)
6232 prev_chain_pointer = chain_pointer;
6233 chain_pointer = chain_pointer->sd_next;
6236 /* At this point we've found the correct place to add the new
6237 entry. So add it and update the linked lists as appropriate. */
6238 if (prev_chain_pointer)
6240 chain_entry->sd_next = chain_pointer;
6241 prev_chain_pointer->sd_next = chain_entry;
6245 space_dict_root = chain_entry;
6246 chain_entry->sd_next = chain_pointer;
6249 if (chain_entry->sd_next == NULL)
6250 space_dict_last = chain_entry;
6253 /* This is here to catch predefined spaces which do not get
6254 modified by the user's input. Another call is found at
6255 the bottom of pa_parse_space_stmt to handle cases where
6256 the user modifies a predefined space. */
6257 #ifdef obj_set_section_attributes
6258 obj_set_section_attributes (seg, defined, private, sort, spnum);
6264 /* Create a new subspace NAME, with the appropriate flags as defined
6265 by the given parameters.
6267 Add the new subspace to the subspace dictionary chain in numerical
6268 order as defined by the SORT entries. */
6270 static ssd_chain_struct *
6271 create_new_subspace (space, name, loadable, code_only, common,
6272 dup_common, is_zero, sort, access, space_index,
6273 alignment, quadrant, seg)
6274 sd_chain_struct *space;
6276 int loadable, code_only, common, dup_common, is_zero;
6284 ssd_chain_struct *chain_entry;
6286 chain_entry = (ssd_chain_struct *) xmalloc (sizeof (ssd_chain_struct));
6288 as_fatal (_("Out of memory: could not allocate new subspace chain entry: %s\n"), name);
6290 SUBSPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6291 strcpy (SUBSPACE_NAME (chain_entry), name);
6293 /* Initialize subspace_defined. When we hit a .subspace directive
6294 we'll set it to 1 which "locks-in" the subspace attributes. */
6295 SUBSPACE_DEFINED (chain_entry) = 0;
6297 chain_entry->ssd_subseg = 0;
6298 chain_entry->ssd_seg = seg;
6299 chain_entry->ssd_next = NULL;
6301 /* Find spot for the new subspace based on its sort key. */
6302 if (space->sd_subspaces == NULL)
6303 space->sd_subspaces = chain_entry;
6306 ssd_chain_struct *chain_pointer;
6307 ssd_chain_struct *prev_chain_pointer;
6309 chain_pointer = space->sd_subspaces;
6310 prev_chain_pointer = NULL;
6312 while (chain_pointer)
6314 prev_chain_pointer = chain_pointer;
6315 chain_pointer = chain_pointer->ssd_next;
6318 /* Now we have somewhere to put the new entry. Insert it and update
6320 if (prev_chain_pointer)
6322 chain_entry->ssd_next = chain_pointer;
6323 prev_chain_pointer->ssd_next = chain_entry;
6327 space->sd_subspaces = chain_entry;
6328 chain_entry->ssd_next = chain_pointer;
6332 #ifdef obj_set_subsection_attributes
6333 obj_set_subsection_attributes (seg, space->sd_seg, access,
6340 /* Update the information for the given subspace based upon the
6341 various arguments. Return the modified subspace chain entry. */
6343 static ssd_chain_struct *
6344 update_subspace (space, name, loadable, code_only, common, dup_common, sort,
6345 zero, access, space_index, alignment, quadrant, section)
6346 sd_chain_struct *space;
6360 ssd_chain_struct *chain_entry;
6362 chain_entry = is_defined_subspace (name);
6364 #ifdef obj_set_subsection_attributes
6365 obj_set_subsection_attributes (section, space->sd_seg, access,
6372 /* Return the space chain entry for the space with the name NAME or
6373 NULL if no such space exists. */
6375 static sd_chain_struct *
6376 is_defined_space (name)
6379 sd_chain_struct *chain_pointer;
6381 for (chain_pointer = space_dict_root;
6383 chain_pointer = chain_pointer->sd_next)
6385 if (strcmp (SPACE_NAME (chain_pointer), name) == 0)
6386 return chain_pointer;
6389 /* No mapping from segment to space was found. Return NULL. */
6393 /* Find and return the space associated with the given seg. If no mapping
6394 from the given seg to a space is found, then return NULL.
6396 Unlike subspaces, the number of spaces is not expected to grow much,
6397 so a linear exhaustive search is OK here. */
6399 static sd_chain_struct *
6400 pa_segment_to_space (seg)
6403 sd_chain_struct *space_chain;
6405 /* Walk through each space looking for the correct mapping. */
6406 for (space_chain = space_dict_root;
6408 space_chain = space_chain->sd_next)
6410 if (space_chain->sd_seg == seg)
6414 /* Mapping was not found. Return NULL. */
6418 /* Return the space chain entry for the subspace with the name NAME or
6419 NULL if no such subspace exists.
6421 Uses a linear search through all the spaces and subspaces, this may
6422 not be appropriate if we ever being placing each function in its
6425 static ssd_chain_struct *
6426 is_defined_subspace (name)
6429 sd_chain_struct *space_chain;
6430 ssd_chain_struct *subspace_chain;
6432 /* Walk through each space. */
6433 for (space_chain = space_dict_root;
6435 space_chain = space_chain->sd_next)
6437 /* Walk through each subspace looking for a name which matches. */
6438 for (subspace_chain = space_chain->sd_subspaces;
6440 subspace_chain = subspace_chain->ssd_next)
6441 if (strcmp (SUBSPACE_NAME (subspace_chain), name) == 0)
6442 return subspace_chain;
6445 /* Subspace wasn't found. Return NULL. */
6449 /* Find and return the subspace associated with the given seg. If no
6450 mapping from the given seg to a subspace is found, then return NULL.
6452 If we ever put each procedure/function within its own subspace
6453 (to make life easier on the compiler and linker), then this will have
6454 to become more efficient. */
6456 static ssd_chain_struct *
6457 pa_subsegment_to_subspace (seg, subseg)
6461 sd_chain_struct *space_chain;
6462 ssd_chain_struct *subspace_chain;
6464 /* Walk through each space. */
6465 for (space_chain = space_dict_root;
6467 space_chain = space_chain->sd_next)
6469 if (space_chain->sd_seg == seg)
6471 /* Walk through each subspace within each space looking for
6472 the correct mapping. */
6473 for (subspace_chain = space_chain->sd_subspaces;
6475 subspace_chain = subspace_chain->ssd_next)
6476 if (subspace_chain->ssd_subseg == (int) subseg)
6477 return subspace_chain;
6481 /* No mapping from subsegment to subspace found. Return NULL. */
6485 /* Given a number, try and find a space with the name number.
6487 Return a pointer to a space dictionary chain entry for the space
6488 that was found or NULL on failure. */
6490 static sd_chain_struct *
6491 pa_find_space_by_number (number)
6494 sd_chain_struct *space_chain;
6496 for (space_chain = space_dict_root;
6498 space_chain = space_chain->sd_next)
6500 if (SPACE_SPNUM (space_chain) == (unsigned int) number)
6504 /* No appropriate space found. Return NULL. */
6508 /* Return the starting address for the given subspace. If the starting
6509 address is unknown then return zero. */
6512 pa_subspace_start (space, quadrant)
6513 sd_chain_struct *space;
6516 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6517 is not correct for the PA OSF1 port. */
6518 if ((strcmp (SPACE_NAME (space), "$PRIVATE$") == 0) && quadrant == 1)
6520 else if (space->sd_seg == data_section && quadrant == 1)
6527 /* FIXME. Needs documentation. */
6529 pa_next_subseg (space)
6530 sd_chain_struct *space;
6533 space->sd_last_subseg++;
6534 return space->sd_last_subseg;
6538 /* Helper function for pa_stringer. Used to find the end of
6545 unsigned int c = *s & CHAR_MASK;
6548 /* We must have a valid space and subspace. */
6549 pa_check_current_space_and_subspace ();
6563 /* Handle a .STRING type pseudo-op. */
6566 pa_stringer (append_zero)
6569 char *s, num_buf[4];
6573 /* Preprocess the string to handle PA-specific escape sequences.
6574 For example, \xDD where DD is a hexidecimal number should be
6575 changed to \OOO where OOO is an octal number. */
6577 /* Skip the opening quote. */
6578 s = input_line_pointer + 1;
6580 while (is_a_char (c = pa_stringer_aux (s++)))
6587 /* Handle \x<num>. */
6590 unsigned int number;
6595 /* Get pas the 'x'. */
6597 for (num_digit = 0, number = 0, dg = *s;
6599 && (isdigit (dg) || (dg >= 'a' && dg <= 'f')
6600 || (dg >= 'A' && dg <= 'F'));
6604 number = number * 16 + dg - '0';
6605 else if (dg >= 'a' && dg <= 'f')
6606 number = number * 16 + dg - 'a' + 10;
6608 number = number * 16 + dg - 'A' + 10;
6618 sprintf (num_buf, "%02o", number);
6621 sprintf (num_buf, "%03o", number);
6624 for (i = 0; i <= num_digit; i++)
6625 s_start[i] = num_buf[i];
6629 /* This might be a "\"", skip over the escaped char. */
6636 stringer (append_zero);
6637 pa_undefine_label ();
6640 /* Handle a .VERSION pseudo-op. */
6647 pa_undefine_label ();
6652 /* Handle a .COMPILER pseudo-op. */
6655 pa_compiler (unused)
6658 obj_som_compiler (0);
6659 pa_undefine_label ();
6664 /* Handle a .COPYRIGHT pseudo-op. */
6667 pa_copyright (unused)
6671 pa_undefine_label ();
6674 /* Just like a normal cons, but when finished we have to undefine
6675 the latest space label. */
6682 pa_undefine_label ();
6685 /* Switch to the data space. As usual delete our label. */
6692 current_space = is_defined_space ("$PRIVATE$");
6694 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
6697 pa_undefine_label ();
6700 /* Like float_cons, but we need to undefine our label. */
6703 pa_float_cons (float_type)
6706 float_cons (float_type);
6707 pa_undefine_label ();
6710 /* Like s_fill, but delete our label when finished. */
6717 /* We must have a valid space and subspace. */
6718 pa_check_current_space_and_subspace ();
6722 pa_undefine_label ();
6725 /* Like lcomm, but delete our label when finished. */
6728 pa_lcomm (needs_align)
6732 /* We must have a valid space and subspace. */
6733 pa_check_current_space_and_subspace ();
6736 s_lcomm (needs_align);
6737 pa_undefine_label ();
6740 /* Like lsym, but delete our label when finished. */
6747 /* We must have a valid space and subspace. */
6748 pa_check_current_space_and_subspace ();
6752 pa_undefine_label ();
6755 /* Switch to the text space. Like s_text, but delete our
6756 label when finished. */
6762 current_space = is_defined_space ("$TEXT$");
6764 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
6768 pa_undefine_label ();
6771 /* On the PA relocations which involve function symbols must not be
6772 adjusted. This so that the linker can know when/how to create argument
6773 relocation stubs for indirect calls and calls to static functions.
6775 "T" field selectors create DLT relative fixups for accessing
6776 globals and statics in PIC code; each DLT relative fixup creates
6777 an entry in the DLT table. The entries contain the address of
6778 the final target (eg accessing "foo" would create a DLT entry
6779 with the address of "foo").
6781 Unfortunately, the HP linker doesn't take into account any addend
6782 when generating the DLT; so accessing $LIT$+8 puts the address of
6783 $LIT$ into the DLT rather than the address of $LIT$+8.
6785 The end result is we can't perform relocation symbol reductions for
6786 any fixup which creates entries in the DLT (eg they use "T" field
6789 Reject reductions involving symbols with external scope; such
6790 reductions make life a living hell for object file editors.
6792 FIXME. Also reject R_HPPA relocations which are 32bits wide in
6793 the code space. The SOM BFD backend doesn't know how to pull the
6794 right bits out of an instruction. */
6797 hppa_fix_adjustable (fixp)
6800 struct hppa_fix_struct *hppa_fix;
6802 hppa_fix = (struct hppa_fix_struct *) fixp->tc_fix_data;
6805 /* Reject reductions of symbols in 32bit relocs. */
6806 if (fixp->fx_r_type == R_HPPA && hppa_fix->fx_r_format == 32)
6809 /* Reject reductions of symbols in sym1-sym2 expressions when
6810 the fixup will occur in a CODE subspace.
6812 XXX FIXME: Long term we probably want to reject all of these;
6813 for example reducing in the debug section would lose if we ever
6814 supported using the optimizing hp linker. */
6817 && (hppa_fix->segment->flags & SEC_CODE))
6819 /* Apparently sy_used_in_reloc never gets set for sub symbols. */
6820 symbol_mark_used_in_reloc (fixp->fx_subsy);
6824 /* We can't adjust any relocs that use LR% and RR% field selectors.
6825 That confuses the HP linker. */
6826 if (hppa_fix->fx_r_field == e_lrsel
6827 || hppa_fix->fx_r_field == e_rrsel
6828 || hppa_fix->fx_r_field == e_nlrsel)
6832 /* Reject reductions of symbols in DLT relative relocs,
6833 relocations with plabels. */
6834 if (hppa_fix->fx_r_field == e_tsel
6835 || hppa_fix->fx_r_field == e_ltsel
6836 || hppa_fix->fx_r_field == e_rtsel
6837 || hppa_fix->fx_r_field == e_psel
6838 || hppa_fix->fx_r_field == e_rpsel
6839 || hppa_fix->fx_r_field == e_lpsel)
6842 if (fixp->fx_addsy && S_IS_EXTERNAL (fixp->fx_addsy))
6845 /* Reject absolute calls (jumps). */
6846 if (hppa_fix->fx_r_type == R_HPPA_ABS_CALL)
6849 /* Reject reductions of function symbols. */
6850 if (fixp->fx_addsy == 0 || ! S_IS_FUNCTION (fixp->fx_addsy))
6856 /* Return nonzero if the fixup in FIXP will require a relocation,
6857 even it if appears that the fixup could be completely handled
6861 hppa_force_relocation (fixp)
6864 struct hppa_fix_struct *hppa_fixp;
6867 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
6869 if (fixp->fx_r_type == R_HPPA_ENTRY || fixp->fx_r_type == R_HPPA_EXIT
6870 || fixp->fx_r_type == R_HPPA_BEGIN_BRTAB
6871 || fixp->fx_r_type == R_HPPA_END_BRTAB
6872 || fixp->fx_r_type == R_HPPA_BEGIN_TRY
6873 || fixp->fx_r_type == R_HPPA_END_TRY
6874 || (fixp->fx_addsy != NULL && fixp->fx_subsy != NULL
6875 && (hppa_fixp->segment->flags & SEC_CODE) != 0))
6879 #define arg_reloc_stub_needed(CALLER, CALLEE) \
6880 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6883 /* It is necessary to force PC-relative calls/jumps to have a relocation
6884 entry if they're going to need either a argument relocation or long
6885 call stub. FIXME. Can't we need the same for absolute calls? */
6886 if (fixp->fx_pcrel && fixp->fx_addsy
6887 && (arg_reloc_stub_needed ((long) ((obj_symbol_type *)
6888 symbol_get_bfdsym (fixp->fx_addsy))->tc_data.ap.hppa_arg_reloc,
6889 hppa_fixp->fx_arg_reloc)))
6892 distance = (fixp->fx_offset + S_GET_VALUE (fixp->fx_addsy)
6893 - md_pcrel_from (fixp));
6894 /* Now check and see if we're going to need a long-branch stub. */
6895 if (fixp->fx_r_type == R_HPPA_PCREL_CALL
6896 && (distance > 262143 || distance < -262144))
6899 if (fixp->fx_r_type == R_HPPA_ABS_CALL)
6901 #undef arg_reloc_stub_needed
6903 /* No need (yet) to force another relocations to be emitted. */
6907 /* Now for some ELF specific code. FIXME. */
6909 /* Mark the end of a function so that it's possible to compute
6910 the size of the function in hppa_elf_final_processing. */
6913 hppa_elf_mark_end_of_function ()
6915 /* ELF does not have EXIT relocations. All we do is create a
6916 temporary symbol marking the end of the function. */
6917 char *name = (char *)
6918 xmalloc (strlen ("L$\001end_") +
6919 strlen (S_GET_NAME (last_call_info->start_symbol)) + 1);
6925 strcpy (name, "L$\001end_");
6926 strcat (name, S_GET_NAME (last_call_info->start_symbol));
6928 /* If we have a .exit followed by a .procend, then the
6929 symbol will have already been defined. */
6930 symbolP = symbol_find (name);
6933 /* The symbol has already been defined! This can
6934 happen if we have a .exit followed by a .procend.
6936 This is *not* an error. All we want to do is free
6937 the memory we just allocated for the name and continue. */
6942 /* symbol value should be the offset of the
6943 last instruction of the function */
6944 symbolP = symbol_new (name, now_seg, (valueT) (frag_now_fix () - 4),
6948 S_CLEAR_EXTERNAL (symbolP);
6949 symbol_table_insert (symbolP);
6953 last_call_info->end_symbol = symbolP;
6955 as_bad (_("Symbol '%s' could not be created."), name);
6959 as_bad (_("No memory for symbol name."));
6963 /* For ELF, this function serves one purpose: to setup the st_size
6964 field of STT_FUNC symbols. To do this, we need to scan the
6965 call_info structure list, determining st_size in by taking the
6966 difference in the address of the beginning/end marker symbols. */
6969 elf_hppa_final_processing ()
6971 struct call_info *call_info_pointer;
6973 for (call_info_pointer = call_info_root;
6975 call_info_pointer = call_info_pointer->ci_next)
6977 elf_symbol_type *esym
6978 = ((elf_symbol_type *)
6979 symbol_get_bfdsym (call_info_pointer->start_symbol));
6980 esym->internal_elf_sym.st_size =
6981 S_GET_VALUE (call_info_pointer->end_symbol)
6982 - S_GET_VALUE (call_info_pointer->start_symbol) + 4;