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* config/tc-hppa.c (pa_ip): Put strict register checks before
[deliverable/binutils-gdb.git] / gas / config / tc-hppa.c
1 /* tc-hppa.c -- Assemble for the PA
2 Copyright (C) 1989, 93, 94, 95, 96, 97, 98, 1999
3 Free Software Foundation, Inc.
4
5 This file is part of GAS, the GNU Assembler.
6
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)
10 any later version.
11
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.
16
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
20 02111-1307, USA. */
21
22
23 /* HP PA-RISC support was contributed by the Center for Software Science
24 at the University of Utah. */
25
26 #include <stdio.h>
27 #include <ctype.h>
28
29 #include "as.h"
30 #include "subsegs.h"
31
32 #include "bfd/libhppa.h"
33 #include "bfd/libbfd.h"
34
35 /* Be careful, this file includes data *declarations*. */
36 #include "opcode/hppa.h"
37
38 #if defined (OBJ_ELF) && defined (OBJ_SOM)
39 error only one of OBJ_ELF and OBJ_SOM can be defined
40 #endif
41
42 /* A "convient" place to put object file dependencies which do
43 not need to be seen outside of tc-hppa.c. */
44 #ifdef OBJ_ELF
45 /* Object file formats specify relocation types. */
46 typedef elf_hppa_reloc_type reloc_type;
47
48 /* Object file formats specify BFD symbol types. */
49 typedef elf_symbol_type obj_symbol_type;
50
51 #ifdef BFD64
52 /* How to generate a relocation. */
53 #define hppa_gen_reloc_type _bfd_elf64_hppa_gen_reloc_type
54 #else
55 #define hppa_gen_reloc_type _bfd_elf32_hppa_gen_reloc_type
56 #endif
57
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
62
63 #define UNWIND_SECTION_NAME ".PARISC.unwind"
64 #endif
65
66 #ifdef OBJ_SOM
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 "$UNWIND$"
72
73 /* Object file formats specify relocation types. */
74 typedef int reloc_type;
75
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
79
80 /* How to generate a relocation. */
81 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
82
83 /* Object file formats specify BFD symbol types. */
84 typedef som_symbol_type obj_symbol_type;
85
86 /* This apparently isn't in older versions of hpux reloc.h. */
87 #ifndef R_DLT_REL
88 #define R_DLT_REL 0x78
89 #endif
90 #endif
91
92 #ifndef R_N0SEL
93 #define R_N0SEL 0xd8
94 #endif
95
96 #ifndef R_N1SEL
97 #define R_N1SEL 0xd9
98 #endif
99
100 /* Various structures and types used internally in tc-hppa.c. */
101
102 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
103
104 struct unwind_desc
105 {
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;
121
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;
126 };
127
128 struct unwind_table
129 {
130 /* Starting and ending offsets of the region described by
131 descriptor. */
132 unsigned int start_offset;
133 unsigned int end_offset;
134 struct unwind_desc descriptor;
135 };
136
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.
140
141 NOTE: GAS does not support .enter and .leave for the generation of
142 prologues and epilogues. FIXME.
143
144 The fields in structure roughly correspond to the arguments available on the
145 .callinfo pseudo-op. */
146
147 struct call_info
148 {
149 /* The unwind descriptor being built. */
150 struct unwind_table ci_unwind;
151
152 /* Name of this function. */
153 symbolS *start_symbol;
154
155 /* (temporary) symbol used to mark the end of this function. */
156 symbolS *end_symbol;
157
158 /* Next entry in the chain. */
159 struct call_info *ci_next;
160 };
161
162 /* Operand formats for FP instructions. Note not all FP instructions
163 allow all four formats to be used (for example fmpysub only allows
164 SGL and DBL). */
165 typedef enum
166 {
167 SGL, DBL, ILLEGAL_FMT, QUAD, W, UW, DW, UDW, QW, UQW
168 }
169 fp_operand_format;
170
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). */
174 typedef enum
175 {
176 SYMBOL_TYPE_UNKNOWN,
177 SYMBOL_TYPE_ABSOLUTE,
178 SYMBOL_TYPE_CODE,
179 SYMBOL_TYPE_DATA,
180 SYMBOL_TYPE_ENTRY,
181 SYMBOL_TYPE_MILLICODE,
182 SYMBOL_TYPE_PLABEL,
183 SYMBOL_TYPE_PRI_PROG,
184 SYMBOL_TYPE_SEC_PROG,
185 }
186 pa_symbol_type;
187
188 /* This structure contains information needed to assemble
189 individual instructions. */
190 struct pa_it
191 {
192 /* Holds the opcode after parsing by pa_ip. */
193 unsigned long opcode;
194
195 /* Holds an expression associated with the current instruction. */
196 expressionS exp;
197
198 /* Does this instruction use PC-relative addressing. */
199 int pcrel;
200
201 /* Floating point formats for operand1 and operand2. */
202 fp_operand_format fpof1;
203 fp_operand_format fpof2;
204
205
206 /* Holds the field selector for this instruction
207 (for example L%, LR%, etc). */
208 long field_selector;
209
210 /* Holds any argument relocation bits associated with this
211 instruction. (instruction should be some sort of call). */
212 long arg_reloc;
213
214 /* The format specification for this instruction. */
215 int format;
216
217 /* The relocation (if any) associated with this instruction. */
218 reloc_type reloc;
219 };
220
221 /* PA-89 floating point registers are arranged like this:
222
223
224 +--------------+--------------+
225 | 0 or 16L | 16 or 16R |
226 +--------------+--------------+
227 | 1 or 17L | 17 or 17R |
228 +--------------+--------------+
229 | | |
230
231 . . .
232 . . .
233 . . .
234
235 | | |
236 +--------------+--------------+
237 | 14 or 30L | 30 or 30R |
238 +--------------+--------------+
239 | 15 or 31L | 31 or 31R |
240 +--------------+--------------+
241
242
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'. */
248
249 struct pa_11_fp_reg_struct
250 {
251 /* The register number. */
252 char number_part;
253
254 /* L/R selector. */
255 char l_r_select;
256 };
257
258 /* Additional information needed to build argument relocation stubs. */
259 struct call_desc
260 {
261 /* The argument relocation specification. */
262 unsigned int arg_reloc;
263
264 /* Number of arguments. */
265 unsigned int arg_count;
266 };
267
268 #ifdef OBJ_SOM
269 /* This structure defines an entry in the subspace dictionary
270 chain. */
271
272 struct subspace_dictionary_chain
273 {
274 /* Nonzero if this space has been defined by the user code. */
275 unsigned int ssd_defined;
276
277 /* Name of this subspace. */
278 char *ssd_name;
279
280 /* GAS segment and subsegment associated with this subspace. */
281 asection *ssd_seg;
282 int ssd_subseg;
283
284 /* Next space in the subspace dictionary chain. */
285 struct subspace_dictionary_chain *ssd_next;
286 };
287
288 typedef struct subspace_dictionary_chain ssd_chain_struct;
289
290 /* This structure defines an entry in the subspace dictionary
291 chain. */
292
293 struct space_dictionary_chain
294 {
295 /* Nonzero if this space has been defined by the user code or
296 as a default space. */
297 unsigned int sd_defined;
298
299 /* Nonzero if this spaces has been defined by the user code. */
300 unsigned int sd_user_defined;
301
302 /* The space number (or index). */
303 unsigned int sd_spnum;
304
305 /* The name of this subspace. */
306 char *sd_name;
307
308 /* GAS segment to which this subspace corresponds. */
309 asection *sd_seg;
310
311 /* Current subsegment number being used. */
312 int sd_last_subseg;
313
314 /* The chain of subspaces contained within this space. */
315 ssd_chain_struct *sd_subspaces;
316
317 /* The next entry in the space dictionary chain. */
318 struct space_dictionary_chain *sd_next;
319 };
320
321 typedef struct space_dictionary_chain sd_chain_struct;
322
323 /* This structure defines attributes of the default subspace
324 dictionary entries. */
325
326 struct default_subspace_dict
327 {
328 /* Name of the subspace. */
329 char *name;
330
331 /* FIXME. Is this still needed? */
332 char defined;
333
334 /* Nonzero if this subspace is loadable. */
335 char loadable;
336
337 /* Nonzero if this subspace contains only code. */
338 char code_only;
339
340 /* Nonzero if this is a common subspace. */
341 char common;
342
343 /* Nonzero if this is a common subspace which allows symbols
344 to be multiply defined. */
345 char dup_common;
346
347 /* Nonzero if this subspace should be zero filled. */
348 char zero;
349
350 /* Sort key for this subspace. */
351 unsigned char sort;
352
353 /* Access control bits for this subspace. Can represent RWX access
354 as well as privilege level changes for gateways. */
355 int access;
356
357 /* Index of containing space. */
358 int space_index;
359
360 /* Alignment (in bytes) of this subspace. */
361 int alignment;
362
363 /* Quadrant within space where this subspace should be loaded. */
364 int quadrant;
365
366 /* An index into the default spaces array. */
367 int def_space_index;
368
369 /* Subsegment associated with this subspace. */
370 subsegT subsegment;
371 };
372
373 /* This structure defines attributes of the default space
374 dictionary entries. */
375
376 struct default_space_dict
377 {
378 /* Name of the space. */
379 char *name;
380
381 /* Space number. It is possible to identify spaces within
382 assembly code numerically! */
383 int spnum;
384
385 /* Nonzero if this space is loadable. */
386 char loadable;
387
388 /* Nonzero if this space is "defined". FIXME is still needed */
389 char defined;
390
391 /* Nonzero if this space can not be shared. */
392 char private;
393
394 /* Sort key for this space. */
395 unsigned char sort;
396
397 /* Segment associated with this space. */
398 asection *segment;
399 };
400 #endif
401
402 /* Structure for previous label tracking. Needed so that alignments,
403 callinfo declarations, etc can be easily attached to a particular
404 label. */
405 typedef struct label_symbol_struct
406 {
407 struct symbol *lss_label;
408 #ifdef OBJ_SOM
409 sd_chain_struct *lss_space;
410 #endif
411 #ifdef OBJ_ELF
412 segT lss_segment;
413 #endif
414 struct label_symbol_struct *lss_next;
415 }
416 label_symbol_struct;
417
418 /* Extra information needed to perform fixups (relocations) on the PA. */
419 struct hppa_fix_struct
420 {
421 /* The field selector. */
422 enum hppa_reloc_field_selector_type_alt fx_r_field;
423
424 /* Type of fixup. */
425 int fx_r_type;
426
427 /* Format of fixup. */
428 int fx_r_format;
429
430 /* Argument relocation bits. */
431 long fx_arg_reloc;
432
433 /* The segment this fixup appears in. */
434 segT segment;
435 };
436
437 /* Structure to hold information about predefined registers. */
438
439 struct pd_reg
440 {
441 char *name;
442 int value;
443 };
444
445 /* This structure defines the mapping from a FP condition string
446 to a condition number which can be recorded in an instruction. */
447 struct fp_cond_map
448 {
449 char *string;
450 int cond;
451 };
452
453 /* This structure defines a mapping from a field selector
454 string to a field selector type. */
455 struct selector_entry
456 {
457 char *prefix;
458 int field_selector;
459 };
460
461 /* Prototypes for functions local to tc-hppa.c. */
462
463 #ifdef OBJ_SOM
464 static void pa_check_current_space_and_subspace PARAMS ((void));
465 #endif
466
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));
517 #ifdef OBJ_SOM
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,
524 int, int, int,
525 asection *, int));
526 static ssd_chain_struct *create_new_subspace PARAMS ((sd_chain_struct *,
527 char *, int, int,
528 int, int, int,
529 int, int, int, int,
530 int, asection *));
531 static ssd_chain_struct *update_subspace PARAMS ((sd_chain_struct *,
532 char *, int, int, int,
533 int, int, int, int,
534 int, int, int,
535 asection *));
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 *,
540 subsegT));
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));
546 #endif
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,
552 int, long, int *));
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 *));
560
561 #ifdef OBJ_ELF
562 static void hppa_elf_mark_end_of_function PARAMS ((void));
563 static void pa_build_unwind_subspace PARAMS ((struct call_info *));
564 #endif
565
566 /* File and gloally scoped variable declarations. */
567
568 #ifdef OBJ_SOM
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;
572
573 /* The current space and subspace. */
574 static sd_chain_struct *current_space;
575 static ssd_chain_struct *current_subspace;
576 #endif
577
578 /* Root of the call_info chain. */
579 static struct call_info *call_info_root;
580
581 /* The last call_info (for functions) structure
582 seen so it can be associated with fixups and
583 function labels. */
584 static struct call_info *last_call_info;
585
586 /* The last call description (for actual calls). */
587 static struct call_desc last_call_desc;
588
589 /* handle of the OPCODE hash table */
590 static struct hash_control *op_hash = NULL;
591
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[] = ";";
595
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
598 dependent tables? */
599 const pseudo_typeS md_pseudo_table[] =
600 {
601 /* align pseudo-ops on the PA specify the actual alignment requested,
602 not the log2 of the requested alignment. */
603 #ifdef OBJ_SOM
604 {"align", pa_align, 8},
605 #endif
606 #ifdef OBJ_ELF
607 {"align", s_align_bytes, 8},
608 #endif
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},
618 #ifdef OBJ_SOM
619 {"compiler", pa_compiler, 0},
620 #endif
621 {"copyright", pa_copyright, 0},
622 {"data", pa_data, 0},
623 {"double", pa_float_cons, 'd'},
624 {"dword", pa_cons, 8},
625 {"end", pa_end, 0},
626 {"end_brtab", pa_brtab, 0},
627 {"end_try", pa_try, 0},
628 {"enter", pa_enter, 0},
629 {"entry", pa_entry, 0},
630 {"equ", pa_equ, 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},
637 {"int", pa_cons, 4},
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},
644 #ifdef OBJ_SOM
645 {"nsubspa", pa_subspace, 1},
646 #endif
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},
654 {"reg", pa_equ, 1},
655 {"short", pa_cons, 2},
656 {"single", pa_float_cons, 'f'},
657 #ifdef OBJ_SOM
658 {"space", pa_space, 0},
659 {"spnum", pa_spnum, 0},
660 #endif
661 {"string", pa_stringer, 0},
662 {"stringz", pa_stringer, 1},
663 #ifdef OBJ_SOM
664 {"subspa", pa_subspace, 0},
665 #endif
666 {"text", pa_text, 0},
667 {"version", pa_version, 0},
668 {"word", pa_cons, 4},
669 {NULL, 0, 0}
670 };
671
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.
675
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.
679
680 Also note that C style comments will always work. */
681 const char line_comment_chars[] = "#";
682
683 /* This array holds the characters which act as line separators. */
684 const char line_separator_chars[] = "!";
685
686 /* Chars that can be used to separate mant from exp in floating point nums. */
687 const char EXP_CHARS[] = "eE";
688
689 /* Chars that mean this number is a floating point constant.
690 As in 0f12.456 or 0d1.2345e12.
691
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";
696
697 static struct pa_it the_insn;
698
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
701 variable. */
702 static char *expr_end;
703
704 /* Nonzero if a .callinfo appeared within the current procedure. */
705 static int callinfo_found;
706
707 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
708 static int within_entry_exit;
709
710 /* Nonzero if the assembler is currently within a procedure definition. */
711 static int within_procedure;
712
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;
716
717 /* Holds the last field selector. */
718 static int hppa_field_selector;
719
720 /* Nonzero when strict syntax checking is enabled. Zero otherwise.
721
722 Each opcode in the table has a flag which indicates whether or not
723 strict syntax checking should be enabled for that instruction. */
724 static int strict = 0;
725
726 #ifdef OBJ_SOM
727 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
728 static symbolS *dummy_symbol;
729 #endif
730
731 /* Nonzero if errors are to be printed. */
732 static int print_errors = 1;
733
734 /* List of registers that are pre-defined:
735
736 Each general register has one predefined name of the form
737 %r<REGNUM> which has the value <REGNUM>.
738
739 Space and control registers are handled in a similar manner,
740 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
741
742 Likewise for the floating point registers, but of the form
743 %fr<REGNUM>. Floating point registers have additional predefined
744 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
745 again have the value <REGNUM>.
746
747 Many registers also have synonyms:
748
749 %r26 - %r23 have %arg0 - %arg3 as synonyms
750 %r28 - %r29 have %ret0 - %ret1 as synonyms
751 %r30 has %sp as a synonym
752 %r27 has %dp as a synonym
753 %r2 has %rp as a synonym
754
755 Almost every control register has a synonym; they are not listed
756 here for brevity.
757
758 The table is sorted. Suitable for searching by a binary search. */
759
760 static const struct pd_reg pre_defined_registers[] =
761 {
762 {"%arg0", 26},
763 {"%arg1", 25},
764 {"%arg2", 24},
765 {"%arg3", 23},
766 {"%cr0", 0},
767 {"%cr10", 10},
768 {"%cr11", 11},
769 {"%cr12", 12},
770 {"%cr13", 13},
771 {"%cr14", 14},
772 {"%cr15", 15},
773 {"%cr16", 16},
774 {"%cr17", 17},
775 {"%cr18", 18},
776 {"%cr19", 19},
777 {"%cr20", 20},
778 {"%cr21", 21},
779 {"%cr22", 22},
780 {"%cr23", 23},
781 {"%cr24", 24},
782 {"%cr25", 25},
783 {"%cr26", 26},
784 {"%cr27", 27},
785 {"%cr28", 28},
786 {"%cr29", 29},
787 {"%cr30", 30},
788 {"%cr31", 31},
789 {"%cr8", 8},
790 {"%cr9", 9},
791 {"%dp", 27},
792 {"%eiem", 15},
793 {"%eirr", 23},
794 {"%fr0", 0},
795 {"%fr0l", 0},
796 {"%fr0r", 0},
797 {"%fr1", 1},
798 {"%fr10", 10},
799 {"%fr10l", 10},
800 {"%fr10r", 10},
801 {"%fr11", 11},
802 {"%fr11l", 11},
803 {"%fr11r", 11},
804 {"%fr12", 12},
805 {"%fr12l", 12},
806 {"%fr12r", 12},
807 {"%fr13", 13},
808 {"%fr13l", 13},
809 {"%fr13r", 13},
810 {"%fr14", 14},
811 {"%fr14l", 14},
812 {"%fr14r", 14},
813 {"%fr15", 15},
814 {"%fr15l", 15},
815 {"%fr15r", 15},
816 {"%fr16", 16},
817 {"%fr16l", 16},
818 {"%fr16r", 16},
819 {"%fr17", 17},
820 {"%fr17l", 17},
821 {"%fr17r", 17},
822 {"%fr18", 18},
823 {"%fr18l", 18},
824 {"%fr18r", 18},
825 {"%fr19", 19},
826 {"%fr19l", 19},
827 {"%fr19r", 19},
828 {"%fr1l", 1},
829 {"%fr1r", 1},
830 {"%fr2", 2},
831 {"%fr20", 20},
832 {"%fr20l", 20},
833 {"%fr20r", 20},
834 {"%fr21", 21},
835 {"%fr21l", 21},
836 {"%fr21r", 21},
837 {"%fr22", 22},
838 {"%fr22l", 22},
839 {"%fr22r", 22},
840 {"%fr23", 23},
841 {"%fr23l", 23},
842 {"%fr23r", 23},
843 {"%fr24", 24},
844 {"%fr24l", 24},
845 {"%fr24r", 24},
846 {"%fr25", 25},
847 {"%fr25l", 25},
848 {"%fr25r", 25},
849 {"%fr26", 26},
850 {"%fr26l", 26},
851 {"%fr26r", 26},
852 {"%fr27", 27},
853 {"%fr27l", 27},
854 {"%fr27r", 27},
855 {"%fr28", 28},
856 {"%fr28l", 28},
857 {"%fr28r", 28},
858 {"%fr29", 29},
859 {"%fr29l", 29},
860 {"%fr29r", 29},
861 {"%fr2l", 2},
862 {"%fr2r", 2},
863 {"%fr3", 3},
864 {"%fr30", 30},
865 {"%fr30l", 30},
866 {"%fr30r", 30},
867 {"%fr31", 31},
868 {"%fr31l", 31},
869 {"%fr31r", 31},
870 {"%fr3l", 3},
871 {"%fr3r", 3},
872 {"%fr4", 4},
873 {"%fr4l", 4},
874 {"%fr4r", 4},
875 {"%fr5", 5},
876 {"%fr5l", 5},
877 {"%fr5r", 5},
878 {"%fr6", 6},
879 {"%fr6l", 6},
880 {"%fr6r", 6},
881 {"%fr7", 7},
882 {"%fr7l", 7},
883 {"%fr7r", 7},
884 {"%fr8", 8},
885 {"%fr8l", 8},
886 {"%fr8r", 8},
887 {"%fr9", 9},
888 {"%fr9l", 9},
889 {"%fr9r", 9},
890 {"%hta", 25},
891 {"%iir", 19},
892 {"%ior", 21},
893 {"%ipsw", 22},
894 {"%isr", 20},
895 {"%itmr", 16},
896 {"%iva", 14},
897 {"%pcoq", 18},
898 {"%pcsq", 17},
899 {"%pidr1", 8},
900 {"%pidr2", 9},
901 {"%pidr3", 12},
902 {"%pidr4", 13},
903 {"%ppda", 24},
904 {"%r0", 0},
905 {"%r1", 1},
906 {"%r10", 10},
907 {"%r11", 11},
908 {"%r12", 12},
909 {"%r13", 13},
910 {"%r14", 14},
911 {"%r15", 15},
912 {"%r16", 16},
913 {"%r17", 17},
914 {"%r18", 18},
915 {"%r19", 19},
916 {"%r2", 2},
917 {"%r20", 20},
918 {"%r21", 21},
919 {"%r22", 22},
920 {"%r23", 23},
921 {"%r24", 24},
922 {"%r25", 25},
923 {"%r26", 26},
924 {"%r27", 27},
925 {"%r28", 28},
926 {"%r29", 29},
927 {"%r3", 3},
928 {"%r30", 30},
929 {"%r31", 31},
930 {"%r4", 4},
931 {"%r5", 5},
932 {"%r6", 6},
933 {"%r7", 7},
934 {"%r8", 8},
935 {"%r9", 9},
936 {"%rctr", 0},
937 {"%ret0", 28},
938 {"%ret1", 29},
939 {"%rp", 2},
940 {"%sar", 11},
941 {"%sp", 30},
942 {"%sr0", 0},
943 {"%sr1", 1},
944 {"%sr2", 2},
945 {"%sr3", 3},
946 {"%sr4", 4},
947 {"%sr5", 5},
948 {"%sr6", 6},
949 {"%sr7", 7},
950 {"%tr0", 24},
951 {"%tr1", 25},
952 {"%tr2", 26},
953 {"%tr3", 27},
954 {"%tr4", 28},
955 {"%tr5", 29},
956 {"%tr6", 30},
957 {"%tr7", 31}
958 };
959
960 /* This table is sorted by order of the length of the string. This is
961 so we check for <> before we check for <. If we had a <> and checked
962 for < first, we would get a false match. */
963 static const struct fp_cond_map fp_cond_map[] =
964 {
965 {"false?", 0},
966 {"false", 1},
967 {"true?", 30},
968 {"true", 31},
969 {"!<=>", 3},
970 {"!?>=", 8},
971 {"!?<=", 16},
972 {"!<>", 7},
973 {"!>=", 11},
974 {"!?>", 12},
975 {"?<=", 14},
976 {"!<=", 19},
977 {"!?<", 20},
978 {"?>=", 22},
979 {"!?=", 24},
980 {"!=t", 27},
981 {"<=>", 29},
982 {"=t", 5},
983 {"?=", 6},
984 {"?<", 10},
985 {"<=", 13},
986 {"!>", 15},
987 {"?>", 18},
988 {">=", 21},
989 {"!<", 23},
990 {"<>", 25},
991 {"!=", 26},
992 {"!?", 28},
993 {"?", 2},
994 {"=", 4},
995 {"<", 9},
996 {">", 17}
997 };
998
999 static const struct selector_entry selector_table[] =
1000 {
1001 {"f", e_fsel},
1002 {"l", e_lsel},
1003 {"ld", e_ldsel},
1004 {"lp", e_lpsel},
1005 {"lr", e_lrsel},
1006 {"ls", e_lssel},
1007 {"lt", e_ltsel},
1008 {"ltp", e_ltpsel},
1009 {"n", e_nsel},
1010 {"nl", e_nlsel},
1011 {"nlr", e_nlrsel},
1012 {"p", e_psel},
1013 {"r", e_rsel},
1014 {"rd", e_rdsel},
1015 {"rp", e_rpsel},
1016 {"rr", e_rrsel},
1017 {"rs", e_rssel},
1018 {"rt", e_rtsel},
1019 {"rtp", e_rtpsel},
1020 {"t", e_tsel},
1021 };
1022
1023 #ifdef OBJ_SOM
1024 /* default space and subspace dictionaries */
1025
1026 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1027 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1028
1029 /* pre-defined subsegments (subspaces) for the HPPA. */
1030 #define SUBSEG_CODE 0
1031 #define SUBSEG_LIT 1
1032 #define SUBSEG_MILLI 2
1033 #define SUBSEG_DATA 0
1034 #define SUBSEG_BSS 2
1035 #define SUBSEG_UNWIND 3
1036 #define SUBSEG_GDB_STRINGS 0
1037 #define SUBSEG_GDB_SYMBOLS 1
1038
1039 static struct default_subspace_dict pa_def_subspaces[] =
1040 {
1041 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, SUBSEG_CODE},
1042 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, SUBSEG_DATA},
1043 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, SUBSEG_LIT},
1044 {"$MILLICODE$", 1, 1, 0, 0, 0, 0, 8, 0x2c, 0, 8, 0, 0, SUBSEG_MILLI},
1045 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, SUBSEG_BSS},
1046 {NULL, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1047 };
1048
1049 static struct default_space_dict pa_def_spaces[] =
1050 {
1051 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL},
1052 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL},
1053 {NULL, 0, 0, 0, 0, 0, ASEC_NULL}
1054 };
1055
1056 /* Misc local definitions used by the assembler. */
1057
1058 /* These macros are used to maintain spaces/subspaces. */
1059 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1060 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1061 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1062 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1063
1064 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1065 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1066 #endif
1067
1068 /* Return nonzero if the string pointed to by S potentially represents
1069 a right or left half of a FP register */
1070 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1071 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1072
1073 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1074 main loop after insertion. */
1075
1076 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1077 { \
1078 ((OPCODE) |= (FIELD) << (START)); \
1079 continue; \
1080 }
1081
1082 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1083 IGNORE is used to suppress the error message. */
1084
1085 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1086 { \
1087 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1088 { \
1089 if (! IGNORE) \
1090 as_bad (_("Field out of range [%d..%d] (%d)."), (LOW), (HIGH), \
1091 (int) (FIELD));\
1092 break; \
1093 } \
1094 }
1095
1096 #define is_DP_relative(exp) \
1097 ((exp).X_op == O_subtract \
1098 && strcmp (S_GET_NAME ((exp).X_op_symbol), "$global$") == 0)
1099
1100 #define is_PC_relative(exp) \
1101 ((exp).X_op == O_subtract \
1102 && strcmp (S_GET_NAME ((exp).X_op_symbol), "$PIC_pcrel$0") == 0)
1103
1104 /* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll
1105 always be able to reduce the expression to a constant, so we don't
1106 need real complex handling yet. */
1107 #define is_complex(exp) \
1108 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1109
1110 /* Actual functions to implement the PA specific code for the assembler. */
1111
1112 /* Called before writing the object file. Make sure entry/exit and
1113 proc/procend pairs match. */
1114
1115 void
1116 pa_check_eof ()
1117 {
1118 if (within_entry_exit)
1119 as_fatal (_("Missing .exit\n"));
1120
1121 if (within_procedure)
1122 as_fatal (_("Missing .procend\n"));
1123 }
1124
1125 /* Returns a pointer to the label_symbol_struct for the current space.
1126 or NULL if no label_symbol_struct exists for the current space. */
1127
1128 static label_symbol_struct *
1129 pa_get_label ()
1130 {
1131 label_symbol_struct *label_chain;
1132
1133 for (label_chain = label_symbols_rootp;
1134 label_chain;
1135 label_chain = label_chain->lss_next)
1136 {
1137 #ifdef OBJ_SOM
1138 if (current_space == label_chain->lss_space && label_chain->lss_label)
1139 return label_chain;
1140 #endif
1141 #ifdef OBJ_ELF
1142 if (now_seg == label_chain->lss_segment && label_chain->lss_label)
1143 return label_chain;
1144 #endif
1145 }
1146
1147 return NULL;
1148 }
1149
1150 /* Defines a label for the current space. If one is already defined,
1151 this function will replace it with the new label. */
1152
1153 void
1154 pa_define_label (symbol)
1155 symbolS *symbol;
1156 {
1157 label_symbol_struct *label_chain = pa_get_label ();
1158
1159 if (label_chain)
1160 label_chain->lss_label = symbol;
1161 else
1162 {
1163 /* Create a new label entry and add it to the head of the chain. */
1164 label_chain
1165 = (label_symbol_struct *) xmalloc (sizeof (label_symbol_struct));
1166 label_chain->lss_label = symbol;
1167 #ifdef OBJ_SOM
1168 label_chain->lss_space = current_space;
1169 #endif
1170 #ifdef OBJ_ELF
1171 label_chain->lss_segment = now_seg;
1172 #endif
1173 label_chain->lss_next = NULL;
1174
1175 if (label_symbols_rootp)
1176 label_chain->lss_next = label_symbols_rootp;
1177
1178 label_symbols_rootp = label_chain;
1179 }
1180 }
1181
1182 /* Removes a label definition for the current space.
1183 If there is no label_symbol_struct entry, then no action is taken. */
1184
1185 static void
1186 pa_undefine_label ()
1187 {
1188 label_symbol_struct *label_chain;
1189 label_symbol_struct *prev_label_chain = NULL;
1190
1191 for (label_chain = label_symbols_rootp;
1192 label_chain;
1193 label_chain = label_chain->lss_next)
1194 {
1195 if (1
1196 #ifdef OBJ_SOM
1197 && current_space == label_chain->lss_space && label_chain->lss_label
1198 #endif
1199 #ifdef OBJ_ELF
1200 && now_seg == label_chain->lss_segment && label_chain->lss_label
1201 #endif
1202 )
1203 {
1204 /* Remove the label from the chain and free its memory. */
1205 if (prev_label_chain)
1206 prev_label_chain->lss_next = label_chain->lss_next;
1207 else
1208 label_symbols_rootp = label_chain->lss_next;
1209
1210 free (label_chain);
1211 break;
1212 }
1213 prev_label_chain = label_chain;
1214 }
1215 }
1216
1217
1218 /* An HPPA-specific version of fix_new. This is required because the HPPA
1219 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1220 results in the creation of an instance of an hppa_fix_struct. An
1221 hppa_fix_struct stores the extra information along with a pointer to the
1222 original fixS. This is attached to the original fixup via the
1223 tc_fix_data field. */
1224
1225 static void
1226 fix_new_hppa (frag, where, size, add_symbol, offset, exp, pcrel,
1227 r_type, r_field, r_format, arg_reloc, unwind_bits)
1228 fragS *frag;
1229 int where;
1230 int size;
1231 symbolS *add_symbol;
1232 long offset;
1233 expressionS *exp;
1234 int pcrel;
1235 bfd_reloc_code_real_type r_type;
1236 enum hppa_reloc_field_selector_type_alt r_field;
1237 int r_format;
1238 long arg_reloc;
1239 int* unwind_bits;
1240 {
1241 fixS *new_fix;
1242
1243 struct hppa_fix_struct *hppa_fix = (struct hppa_fix_struct *)
1244 obstack_alloc (&notes, sizeof (struct hppa_fix_struct));
1245
1246 if (exp != NULL)
1247 new_fix = fix_new_exp (frag, where, size, exp, pcrel, r_type);
1248 else
1249 new_fix = fix_new (frag, where, size, add_symbol, offset, pcrel, r_type);
1250 new_fix->tc_fix_data = (void *) hppa_fix;
1251 hppa_fix->fx_r_type = r_type;
1252 hppa_fix->fx_r_field = r_field;
1253 hppa_fix->fx_r_format = r_format;
1254 hppa_fix->fx_arg_reloc = arg_reloc;
1255 hppa_fix->segment = now_seg;
1256 #ifdef OBJ_SOM
1257 if (r_type == R_ENTRY || r_type == R_EXIT)
1258 new_fix->fx_offset = *unwind_bits;
1259 #endif
1260
1261 /* foo-$global$ is used to access non-automatic storage. $global$
1262 is really just a marker and has served its purpose, so eliminate
1263 it now so as not to confuse write.c. */
1264 if (new_fix->fx_subsy
1265 && !strcmp (S_GET_NAME (new_fix->fx_subsy), "$global$"))
1266 new_fix->fx_subsy = NULL;
1267 }
1268
1269 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1270 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1271
1272 void
1273 parse_cons_expression_hppa (exp)
1274 expressionS *exp;
1275 {
1276 hppa_field_selector = pa_chk_field_selector (&input_line_pointer);
1277 expression (exp);
1278 }
1279
1280 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1281 hppa_field_selector is set by the parse_cons_expression_hppa. */
1282
1283 void
1284 cons_fix_new_hppa (frag, where, size, exp)
1285 fragS *frag;
1286 int where;
1287 int size;
1288 expressionS *exp;
1289 {
1290 unsigned int rel_type;
1291
1292 /* Get a base relocation type. */
1293 if (is_DP_relative (*exp))
1294 rel_type = R_HPPA_GOTOFF;
1295 else if (is_complex (*exp))
1296 rel_type = R_HPPA_COMPLEX;
1297 else
1298 rel_type = R_HPPA;
1299
1300 if (hppa_field_selector != e_psel && hppa_field_selector != e_fsel)
1301 as_warn (_("Invalid field selector. Assuming F%%."));
1302
1303 fix_new_hppa (frag, where, size,
1304 (symbolS *) NULL, (offsetT) 0, exp, 0, rel_type,
1305 hppa_field_selector, size * 8, 0, NULL);
1306
1307 /* Reset field selector to its default state. */
1308 hppa_field_selector = 0;
1309 }
1310
1311 /* This function is called once, at assembler startup time. It should
1312 set up all the tables, etc. that the MD part of the assembler will need. */
1313
1314 void
1315 md_begin ()
1316 {
1317 const char *retval = NULL;
1318 int lose = 0;
1319 unsigned int i = 0;
1320
1321 last_call_info = NULL;
1322 call_info_root = NULL;
1323
1324 /* Set the default machine type. */
1325 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10))
1326 as_warn (_("could not set architecture and machine"));
1327
1328 /* Folding of text and data segments fails miserably on the PA.
1329 Warn user and disable "-R" option. */
1330 if (flag_readonly_data_in_text)
1331 {
1332 as_warn (_("-R option not supported on this target."));
1333 flag_readonly_data_in_text = 0;
1334 }
1335
1336 #ifdef OBJ_SOM
1337 pa_spaces_begin ();
1338 #endif
1339
1340 op_hash = hash_new ();
1341
1342 while (i < NUMOPCODES)
1343 {
1344 const char *name = pa_opcodes[i].name;
1345 retval = hash_insert (op_hash, name, (struct pa_opcode *) &pa_opcodes[i]);
1346 if (retval != NULL && *retval != '\0')
1347 {
1348 as_fatal (_("Internal error: can't hash `%s': %s\n"), name, retval);
1349 lose = 1;
1350 }
1351 do
1352 {
1353 if ((pa_opcodes[i].match & pa_opcodes[i].mask)
1354 != pa_opcodes[i].match)
1355 {
1356 fprintf (stderr, _("internal error: losing opcode: `%s' \"%s\"\n"),
1357 pa_opcodes[i].name, pa_opcodes[i].args);
1358 lose = 1;
1359 }
1360 ++i;
1361 }
1362 while (i < NUMOPCODES && !strcmp (pa_opcodes[i].name, name));
1363 }
1364
1365 if (lose)
1366 as_fatal (_("Broken assembler. No assembly attempted."));
1367
1368 #ifdef OBJ_SOM
1369 /* SOM will change text_section. To make sure we never put
1370 anything into the old one switch to the new one now. */
1371 subseg_set (text_section, 0);
1372 #endif
1373
1374 #ifdef OBJ_SOM
1375 dummy_symbol = symbol_find_or_make ("L$dummy");
1376 S_SET_SEGMENT (dummy_symbol, text_section);
1377 /* Force the symbol to be converted to a real symbol. */
1378 (void) symbol_get_bfdsym (dummy_symbol);
1379 #endif
1380 }
1381
1382 /* Assemble a single instruction storing it into a frag. */
1383 void
1384 md_assemble (str)
1385 char *str;
1386 {
1387 char *to;
1388
1389 /* The had better be something to assemble. */
1390 assert (str);
1391
1392 /* If we are within a procedure definition, make sure we've
1393 defined a label for the procedure; handle case where the
1394 label was defined after the .PROC directive.
1395
1396 Note there's not need to diddle with the segment or fragment
1397 for the label symbol in this case. We have already switched
1398 into the new $CODE$ subspace at this point. */
1399 if (within_procedure && last_call_info->start_symbol == NULL)
1400 {
1401 label_symbol_struct *label_symbol = pa_get_label ();
1402
1403 if (label_symbol)
1404 {
1405 if (label_symbol->lss_label)
1406 {
1407 last_call_info->start_symbol = label_symbol->lss_label;
1408 symbol_get_bfdsym (label_symbol->lss_label)->flags
1409 |= BSF_FUNCTION;
1410 #ifdef OBJ_SOM
1411 /* Also handle allocation of a fixup to hold the unwind
1412 information when the label appears after the proc/procend. */
1413 if (within_entry_exit)
1414 {
1415 char *where = frag_more (0);
1416
1417 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
1418 NULL, (offsetT) 0, NULL,
1419 0, R_HPPA_ENTRY, e_fsel, 0, 0,
1420 (int *)&last_call_info->ci_unwind.descriptor);
1421 }
1422 #endif
1423 }
1424 else
1425 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
1426 }
1427 else
1428 as_bad (_("Missing function name for .PROC"));
1429 }
1430
1431 /* Assemble the instruction. Results are saved into "the_insn". */
1432 pa_ip (str);
1433
1434 /* Get somewhere to put the assembled instrution. */
1435 to = frag_more (4);
1436
1437 /* Output the opcode. */
1438 md_number_to_chars (to, the_insn.opcode, 4);
1439
1440 /* If necessary output more stuff. */
1441 if (the_insn.reloc != R_HPPA_NONE)
1442 fix_new_hppa (frag_now, (to - frag_now->fr_literal), 4, NULL,
1443 (offsetT) 0, &the_insn.exp, the_insn.pcrel,
1444 the_insn.reloc, the_insn.field_selector,
1445 the_insn.format, the_insn.arg_reloc, NULL);
1446 }
1447
1448 /* Do the real work for assembling a single instruction. Store results
1449 into the global "the_insn" variable. */
1450
1451 static void
1452 pa_ip (str)
1453 char *str;
1454 {
1455 char *error_message = "";
1456 char *s, c, *argstart, *name, *save_s;
1457 const char *args;
1458 int match = FALSE;
1459 int comma = 0;
1460 int cmpltr, nullif, flag, cond, num;
1461 unsigned long opcode;
1462 struct pa_opcode *insn;
1463
1464 #ifdef OBJ_SOM
1465 /* We must have a valid space and subspace. */
1466 pa_check_current_space_and_subspace ();
1467 #endif
1468
1469 /* Convert everything up to the first whitespace character into lower
1470 case. */
1471 for (s = str; *s != ' ' && *s != '\t' && *s != '\n' && *s != '\0'; s++)
1472 if (isupper (*s))
1473 *s = tolower (*s);
1474
1475 /* Skip to something interesting. */
1476 for (s = str; isupper (*s) || islower (*s) || (*s >= '0' && *s <= '3'); ++s)
1477 ;
1478
1479 switch (*s)
1480 {
1481
1482 case '\0':
1483 break;
1484
1485 case ',':
1486 comma = 1;
1487
1488 /*FALLTHROUGH */
1489
1490 case ' ':
1491 *s++ = '\0';
1492 break;
1493
1494 default:
1495 as_fatal (_("Unknown opcode: `%s'"), str);
1496 }
1497
1498 save_s = str;
1499
1500 /* Look up the opcode in the has table. */
1501 if ((insn = (struct pa_opcode *) hash_find (op_hash, str)) == NULL)
1502 {
1503 as_bad ("Unknown opcode: `%s'", str);
1504 return;
1505 }
1506
1507 if (comma)
1508 {
1509 *--s = ',';
1510 }
1511
1512 /* Mark the location where arguments for the instruction start, then
1513 start processing them. */
1514 argstart = s;
1515 for (;;)
1516 {
1517 /* Do some initialization. */
1518 opcode = insn->match;
1519 strict = (insn->flags & FLAG_STRICT);
1520 memset (&the_insn, 0, sizeof (the_insn));
1521
1522 the_insn.reloc = R_HPPA_NONE;
1523
1524 /* If this instruction is specific to a particular architecture,
1525 then set a new architecture. */
1526 /* But do not automatically promote to pa2.0. The automatic promotion
1527 crud is for compatability with HP's old assemblers only. */
1528 if (insn->arch < 20
1529 && bfd_get_mach (stdoutput) < insn->arch)
1530 {
1531 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, insn->arch))
1532 as_warn (_("could not update architecture and machine"));
1533 }
1534 else if (bfd_get_mach (stdoutput) < insn->arch)
1535 {
1536 match = FALSE;
1537 goto failed;
1538 }
1539
1540 /* Build the opcode, checking as we go to make
1541 sure that the operands match. */
1542 for (args = insn->args;; ++args)
1543 {
1544 /* Absorb white space in instruction. */
1545 while (*s == ' ' || *s == '\t')
1546 s++;
1547
1548 switch (*args)
1549 {
1550
1551 /* End of arguments. */
1552 case '\0':
1553 if (*s == '\0')
1554 match = TRUE;
1555 break;
1556
1557 case '+':
1558 if (*s == '+')
1559 {
1560 ++s;
1561 continue;
1562 }
1563 if (*s == '-')
1564 continue;
1565 break;
1566
1567 /* These must match exactly. */
1568 case '(':
1569 case ')':
1570 case ',':
1571 case ' ':
1572 if (*s++ == *args)
1573 continue;
1574 break;
1575
1576 /* Handle a 5 bit register or control register field at 10. */
1577 case 'b':
1578 case '^':
1579 /* This should be more strict. Small steps. */
1580 if (strict && *s != '%')
1581 break;
1582 num = pa_parse_number (&s, 0);
1583 CHECK_FIELD (num, 31, 0, 0);
1584 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
1585
1586 /* Handle %sar or %cr11. No bits get set, we just verify that it
1587 is there. */
1588 case '!':
1589 /* Skip whitespace before register. */
1590 while (*s == ' ' || *s == '\t')
1591 s = s + 1;
1592
1593 if (!strncasecmp(s, "%sar", 4))
1594 {
1595 s += 4;
1596 continue;
1597 }
1598 else if (!strncasecmp(s, "%cr11", 5))
1599 {
1600 s += 5;
1601 continue;
1602 }
1603 break;
1604
1605 /* Handle a 5 bit register field at 15. */
1606 case 'x':
1607 /* This should be more strict. Small steps. */
1608 if (strict && *s != '%')
1609 break;
1610 num = pa_parse_number (&s, 0);
1611 CHECK_FIELD (num, 31, 0, 0);
1612 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1613
1614 /* Handle a 5 bit register field at 31. */
1615 case 't':
1616 /* This should be more strict. Small steps. */
1617 if (strict && *s != '%')
1618 break;
1619 num = pa_parse_number (&s, 0);
1620 CHECK_FIELD (num, 31, 0, 0);
1621 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1622
1623 /* Handle a 5 bit register field at 10 and 15. */
1624 case 'a':
1625 /* This should be more strict. Small steps. */
1626 if (strict && *s != '%')
1627 break;
1628 num = pa_parse_number (&s, 0);
1629 CHECK_FIELD (num, 31, 0, 0);
1630 opcode |= num << 16;
1631 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
1632
1633 /* Handle a 5 bit field length at 31. */
1634 case 'T':
1635 num = pa_get_absolute_expression (&the_insn, &s);
1636 if (strict && the_insn.exp.X_op != O_constant)
1637 break;
1638 s = expr_end;
1639 CHECK_FIELD (num, 32, 1, 0);
1640 INSERT_FIELD_AND_CONTINUE (opcode, 32 - num, 0);
1641
1642 /* Handle a 5 bit immediate at 15. */
1643 case '5':
1644 num = pa_get_absolute_expression (&the_insn, &s);
1645 if (strict && the_insn.exp.X_op != O_constant)
1646 break;
1647 s = expr_end;
1648 /* When in strict mode, we want to just reject this
1649 match instead of giving an out of range error. */
1650 CHECK_FIELD (num, 15, -16, strict);
1651 low_sign_unext (num, 5, &num);
1652 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1653
1654 /* Handle a 5 bit immediate at 31. */
1655 case 'V':
1656 num = pa_get_absolute_expression (&the_insn, &s);
1657 if (strict && the_insn.exp.X_op != O_constant)
1658 break;
1659 s = expr_end;
1660 /* When in strict mode, we want to just reject this
1661 match instead of giving an out of range error. */
1662 CHECK_FIELD (num, 15, -16, strict)
1663 low_sign_unext (num, 5, &num);
1664 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1665
1666 /* Handle an unsigned 5 bit immediate at 31. */
1667 case 'r':
1668 num = pa_get_absolute_expression (&the_insn, &s);
1669 if (strict && the_insn.exp.X_op != O_constant)
1670 break;
1671 s = expr_end;
1672 CHECK_FIELD (num, 31, 0, 0);
1673 INSERT_FIELD_AND_CONTINUE (opcode, num, strict);
1674
1675 /* Handle an unsigned 5 bit immediate at 15. */
1676 case 'R':
1677 num = pa_get_absolute_expression (&the_insn, &s);
1678 if (strict && the_insn.exp.X_op != O_constant)
1679 break;
1680 s = expr_end;
1681 CHECK_FIELD (num, 31, 0, strict);
1682 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1683
1684 /* Handle an unsigned 10 bit immediate at 15. */
1685 case 'U':
1686 num = pa_get_absolute_expression (&the_insn, &s);
1687 if (strict && the_insn.exp.X_op != O_constant)
1688 break;
1689 s = expr_end;
1690 CHECK_FIELD (num, 1023, 0, strict);
1691 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1692
1693 /* Handle a 2 bit space identifier at 17. */
1694 case 's':
1695 /* This should be more strict. Small steps. */
1696 if (strict && *s != '%')
1697 break;
1698 num = pa_parse_number (&s, 0);
1699 CHECK_FIELD (num, 3, 0, 1);
1700 INSERT_FIELD_AND_CONTINUE (opcode, num, 14);
1701
1702 /* Handle a 3 bit space identifier at 18. */
1703 case 'S':
1704 /* This should be more strict. Small steps. */
1705 if (strict && *s != '%')
1706 break;
1707 num = pa_parse_number (&s, 0);
1708 CHECK_FIELD (num, 7, 0, 1);
1709 dis_assemble_3 (num, &num);
1710 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
1711
1712 /* Handle all completers. */
1713 case 'c':
1714 switch (*++args)
1715 {
1716
1717 /* Handle a completer for an indexing load or store. */
1718 case 'x':
1719 {
1720 int uu = 0;
1721 int m = 0;
1722 int i = 0;
1723 while (*s == ',' && i < 2)
1724 {
1725 s++;
1726 if (strncasecmp (s, "sm", 2) == 0)
1727 {
1728 uu = 1;
1729 m = 1;
1730 s++;
1731 i++;
1732 }
1733 else if (strncasecmp (s, "m", 1) == 0)
1734 m = 1;
1735 else if (strncasecmp (s, "s", 1) == 0)
1736 uu = 1;
1737 /* When in strict mode this is a match failure. */
1738 else if (strict)
1739 break;
1740 else
1741 as_bad (_("Invalid Indexed Load Completer."));
1742 s++;
1743 i++;
1744 }
1745 if (i > 2)
1746 as_bad (_("Invalid Indexed Load Completer Syntax."));
1747 opcode |= m << 5;
1748 INSERT_FIELD_AND_CONTINUE (opcode, uu, 13);
1749 }
1750
1751 /* Handle a short load/store completer. */
1752 case 'm':
1753 {
1754 int a = 0;
1755 int m = 0;
1756 if (*s == ',')
1757 {
1758 s++;
1759 if (strncasecmp (s, "ma", 2) == 0)
1760 {
1761 a = 0;
1762 m = 1;
1763 }
1764 else if (strncasecmp (s, "mb", 2) == 0)
1765 {
1766 a = 1;
1767 m = 1;
1768 }
1769 /* When in strict mode this is a match failure. */
1770 else if (strict)
1771 break;
1772 else
1773 as_bad (_("Invalid Short Load/Store Completer."));
1774 s += 2;
1775 }
1776
1777 opcode |= m << 5;
1778 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1779 }
1780
1781 /* Handle a stbys completer. */
1782 case 's':
1783 {
1784 int a = 0;
1785 int m = 0;
1786 int i = 0;
1787 while (*s == ',' && i < 2)
1788 {
1789 s++;
1790 if (strncasecmp (s, "m", 1) == 0)
1791 m = 1;
1792 else if (strncasecmp (s, "b", 1) == 0)
1793 a = 0;
1794 else if (strncasecmp (s, "e", 1) == 0)
1795 a = 1;
1796 /* When in strict mode this is a match failure. */
1797 else if (strict)
1798 break;
1799 else
1800 as_bad (_("Invalid Store Bytes Short Completer"));
1801 s++;
1802 i++;
1803 }
1804 if (i > 2)
1805 as_bad (_("Invalid Store Bytes Short Completer"));
1806 opcode |= m << 5;
1807 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1808 }
1809
1810 /* Handle a local processor completer. */
1811 case 'L':
1812 if (strncasecmp (s, ",l", 2) != 0)
1813 break;
1814 s += 2;
1815 continue;
1816
1817 /* Handle a PROBE read/write completer. */
1818 case 'w':
1819 flag = 0;
1820 if (!strncasecmp (s, ",w", 2))
1821 {
1822 flag = 1;
1823 s += 2;
1824 }
1825 else if (!strncasecmp (s, ",r", 2))
1826 {
1827 flag = 0;
1828 s += 2;
1829 }
1830
1831 INSERT_FIELD_AND_CONTINUE (opcode, flag, 6);
1832
1833 /* Handle MFCTL wide completer. */
1834 case 'W':
1835 if (strncasecmp (s, ",w", 2) != 0)
1836 break;
1837 s += 2;
1838 continue;
1839
1840 /* Handle an RFI restore completer. */
1841 case 'r':
1842 flag = 0;
1843 if (!strncasecmp (s, ",r", 2))
1844 {
1845 flag = 5;
1846 s += 2;
1847 }
1848
1849 INSERT_FIELD_AND_CONTINUE (opcode, flag, 5);
1850
1851 /* Handle a system control completer. */
1852 case 'Z':
1853 if (*s == ',' && (*(s + 1) == 'm' || *(s + 1) == 'M'))
1854 {
1855 flag = 1;
1856 s += 2;
1857 }
1858 else
1859 flag = 0;
1860
1861 INSERT_FIELD_AND_CONTINUE (opcode, flag, 5);
1862
1863 /* Handle intermediate/final completer for DCOR. */
1864 case 'i':
1865 flag = 0;
1866 if (!strncasecmp (s, ",i", 2))
1867 {
1868 flag = 1;
1869 s += 2;
1870 }
1871
1872 INSERT_FIELD_AND_CONTINUE (opcode, flag, 6);
1873
1874 /* Handle zero/sign extension completer. */
1875 case 'z':
1876 flag = 1;
1877 if (!strncasecmp (s, ",z", 2))
1878 {
1879 flag = 0;
1880 s += 2;
1881 }
1882
1883 INSERT_FIELD_AND_CONTINUE (opcode, flag, 10);
1884
1885 /* Handle add completer. */
1886 case 'a':
1887 flag = 1;
1888 if (!strncasecmp (s, ",l", 2))
1889 {
1890 flag = 2;
1891 s += 2;
1892 }
1893 else if (!strncasecmp (s, ",tsv", 4))
1894 {
1895 flag = 3;
1896 s += 4;
1897 }
1898
1899 INSERT_FIELD_AND_CONTINUE (opcode, flag, 10);
1900
1901 /* Handle 64 bit carry for ADD. */
1902 case 'Y':
1903 flag = 0;
1904 if (!strncasecmp (s, ",dc,tsv", 7) ||
1905 !strncasecmp (s, ",tsv,dc", 7))
1906 {
1907 flag = 1;
1908 s += 7;
1909 }
1910 else if (!strncasecmp (s, ",dc", 3))
1911 {
1912 flag = 0;
1913 s += 3;
1914 }
1915 else
1916 break;
1917
1918 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
1919
1920 /* Handle 32 bit carry for ADD. */
1921 case 'y':
1922 flag = 0;
1923 if (!strncasecmp (s, ",c,tsv", 6) ||
1924 !strncasecmp (s, ",tsv,c", 6))
1925 {
1926 flag = 1;
1927 s += 6;
1928 }
1929 else if (!strncasecmp (s, ",c", 2))
1930 {
1931 flag = 0;
1932 s += 2;
1933 }
1934 else
1935 break;
1936
1937 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
1938
1939 /* Handle trap on signed overflow. */
1940 case 'v':
1941 flag = 0;
1942 if (!strncasecmp (s, ",tsv", 4))
1943 {
1944 flag = 1;
1945 s += 4;
1946 }
1947
1948 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
1949
1950 /* Handle trap on condition and overflow. */
1951 case 't':
1952 flag = 0;
1953 if (!strncasecmp (s, ",tc,tsv", 7) ||
1954 !strncasecmp (s, ",tsv,tc", 7))
1955 {
1956 flag = 1;
1957 s += 7;
1958 }
1959 else if (!strncasecmp (s, ",tc", 3))
1960 {
1961 flag = 0;
1962 s += 3;
1963 }
1964 else
1965 break;
1966
1967 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
1968
1969 /* Handle 64 bit borrow for SUB. */
1970 case 'B':
1971 flag = 0;
1972 if (!strncasecmp (s, ",db,tsv", 7) ||
1973 !strncasecmp (s, ",tsv,db", 7))
1974 {
1975 flag = 1;
1976 s += 7;
1977 }
1978 else if (!strncasecmp (s, ",db", 3))
1979 {
1980 flag = 0;
1981 s += 3;
1982 }
1983 else
1984 break;
1985
1986 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
1987
1988 /* Handle 32 bit borrow for SUB. */
1989 case 'b':
1990 flag = 0;
1991 if (!strncasecmp (s, ",b,tsv", 6) ||
1992 !strncasecmp (s, ",tsv,b", 6))
1993 {
1994 flag = 1;
1995 s += 6;
1996 }
1997 else if (!strncasecmp (s, ",b", 2))
1998 {
1999 flag = 0;
2000 s += 2;
2001 }
2002 else
2003 break;
2004
2005 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
2006
2007 /* Handle trap condition completer for UADDCM. */
2008 case 'T':
2009 flag = 0;
2010 if (!strncasecmp (s, ",tc", 3))
2011 {
2012 flag = 1;
2013 s += 3;
2014 }
2015
2016 INSERT_FIELD_AND_CONTINUE (opcode, flag, 6);
2017
2018 /* Handle signed/unsigned at 21. */
2019 case 'S':
2020 {
2021 int sign = 1;
2022 if (strncasecmp (s, ",s", 2) == 0)
2023 {
2024 sign = 1;
2025 s += 2;
2026 }
2027 else if (strncasecmp (s, ",u", 2) == 0)
2028 {
2029 sign = 0;
2030 s += 2;
2031 }
2032
2033 INSERT_FIELD_AND_CONTINUE (opcode, sign, 10);
2034 }
2035
2036 /* Handle left/right combination at 17:18. */
2037 case 'h':
2038 if (*s++ == ',')
2039 {
2040 int lr = 0;
2041 if (*s == 'r')
2042 lr = 2;
2043 else if (*s == 'l')
2044 lr = 0;
2045 else
2046 as_bad(_("Invalid left/right combination completer"));
2047
2048 s++;
2049 INSERT_FIELD_AND_CONTINUE (opcode, lr, 13);
2050 }
2051 else
2052 as_bad(_("Invalid left/right combination completer"));
2053 break;
2054
2055 /* Handle saturation at 24:25. */
2056 case 'H':
2057 {
2058 int sat = 3;
2059 if (strncasecmp (s, ",ss", 3) == 0)
2060 {
2061 sat = 1;
2062 s += 3;
2063 }
2064 else if (strncasecmp (s, ",us", 3) == 0)
2065 {
2066 sat = 0;
2067 s += 3;
2068 }
2069
2070 INSERT_FIELD_AND_CONTINUE (opcode, sat, 6);
2071 }
2072
2073 /* Handle permutation completer. */
2074 case '*':
2075 if (*s++ == ',')
2076 {
2077 int permloc[4] = {13,10,8,6};
2078 int perm = 0;
2079 int i = 0;
2080 for (; i < 4; i++)
2081 {
2082 switch (*s++)
2083 {
2084 case '0':
2085 perm = 0;
2086 break;
2087 case '1':
2088 perm = 1;
2089 break;
2090 case '2':
2091 perm = 2;
2092 break;
2093 case '3':
2094 perm = 3;
2095 break;
2096 default:
2097 as_bad(_("Invalid permutation completer"));
2098 }
2099 opcode |= perm << permloc[i];
2100 }
2101 continue;
2102 }
2103 else
2104 as_bad(_("Invalid permutation completer"));
2105 break;
2106
2107 default:
2108 abort ();
2109 }
2110 break;
2111
2112 /* Handle all conditions. */
2113 case '?':
2114 {
2115 args++;
2116 switch (*args)
2117 {
2118 /* Handle FP compare conditions. */
2119 case 'f':
2120 cond = pa_parse_fp_cmp_cond (&s);
2121 INSERT_FIELD_AND_CONTINUE (opcode, cond, 0);
2122
2123 /* Handle an add condition. */
2124 case 'A':
2125 case 'a':
2126 cmpltr = 0;
2127 flag = 0;
2128 if (*s == ',')
2129 {
2130 s++;
2131
2132 /* 64 bit conditions. */
2133 if (*args == 'A')
2134 {
2135 if (*s == '*')
2136 s++;
2137 else
2138 break;
2139 }
2140 else if (*s == '*')
2141 break;
2142 name = s;
2143
2144 name = s;
2145 while (*s != ',' && *s != ' ' && *s != '\t')
2146 s += 1;
2147 c = *s;
2148 *s = 0x00;
2149 if (strcmp (name, "=") == 0)
2150 cmpltr = 1;
2151 else if (strcmp (name, "<") == 0)
2152 cmpltr = 2;
2153 else if (strcmp (name, "<=") == 0)
2154 cmpltr = 3;
2155 else if (strcasecmp (name, "nuv") == 0)
2156 cmpltr = 4;
2157 else if (strcasecmp (name, "znv") == 0)
2158 cmpltr = 5;
2159 else if (strcasecmp (name, "sv") == 0)
2160 cmpltr = 6;
2161 else if (strcasecmp (name, "od") == 0)
2162 cmpltr = 7;
2163 else if (strcasecmp (name, "tr") == 0)
2164 {
2165 cmpltr = 0;
2166 flag = 1;
2167 }
2168 else if (strcmp (name, "<>") == 0)
2169 {
2170 cmpltr = 1;
2171 flag = 1;
2172 }
2173 else if (strcmp (name, ">=") == 0)
2174 {
2175 cmpltr = 2;
2176 flag = 1;
2177 }
2178 else if (strcmp (name, ">") == 0)
2179 {
2180 cmpltr = 3;
2181 flag = 1;
2182 }
2183 else if (strcasecmp (name, "uv") == 0)
2184 {
2185 cmpltr = 4;
2186 flag = 1;
2187 }
2188 else if (strcasecmp (name, "vnz") == 0)
2189 {
2190 cmpltr = 5;
2191 flag = 1;
2192 }
2193 else if (strcasecmp (name, "nsv") == 0)
2194 {
2195 cmpltr = 6;
2196 flag = 1;
2197 }
2198 else if (strcasecmp (name, "ev") == 0)
2199 {
2200 cmpltr = 7;
2201 flag = 1;
2202 }
2203 /* ",*" is a valid condition. */
2204 else if (*args == 'a')
2205 as_bad (_("Invalid Add Condition: %s"), name);
2206 *s = c;
2207 }
2208 opcode |= cmpltr << 13;
2209 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2210
2211 /* Handle non-negated add and branch condition. */
2212 case 'd':
2213 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
2214 if (cmpltr < 0)
2215 {
2216 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s);
2217 cmpltr = 0;
2218 }
2219 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2220
2221 /* Handle negated add and branch condition. */
2222 case 'D':
2223 abort ();
2224
2225 /* Handle wide-mode non-negated add and branch condition. */
2226 case 'w':
2227 abort ();
2228
2229 /* Handle wide-mode negated add and branch condition. */
2230 case 'W':
2231 abort();
2232
2233 /* Handle a negated or non-negated add and branch
2234 condition. */
2235 case '@':
2236 save_s = s;
2237 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
2238 if (cmpltr < 0)
2239 {
2240 s = save_s;
2241 cmpltr = pa_parse_neg_add_cmpltr (&s, 1);
2242 if (cmpltr < 0)
2243 {
2244 as_bad (_("Invalid Compare/Subtract Condition"));
2245 cmpltr = 0;
2246 }
2247 else
2248 {
2249 /* Negated condition requires an opcode change. */
2250 opcode |= 1 << 27;
2251 }
2252 }
2253 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2254
2255 /* Handle branch on bit conditions. */
2256 case 'B':
2257 case 'b':
2258 cmpltr = 0;
2259 if (*s == ',')
2260 {
2261 s++;
2262
2263 if (*args == 'B')
2264 {
2265 if (*s == '*')
2266 s++;
2267 else
2268 break;
2269 }
2270 else if (*s == '*')
2271 break;
2272
2273 if (strncmp (s, "<", 1) == 0)
2274 {
2275 cmpltr = 0;
2276 s++;
2277 }
2278 else if (strncmp (s, ">=", 2) == 0)
2279 {
2280 cmpltr = 1;
2281 s += 2;
2282 }
2283 else
2284 as_bad (_("Invalid Bit Branch Condition: %c"), *s);
2285 }
2286 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 15);
2287
2288 /* Handle a compare/subtract condition. */
2289 case 'S':
2290 case 's':
2291 cmpltr = 0;
2292 flag = 0;
2293 if (*s == ',')
2294 {
2295 s++;
2296
2297 /* 64 bit conditions. */
2298 if (*args == 'S')
2299 {
2300 if (*s == '*')
2301 s++;
2302 else
2303 break;
2304 }
2305 else if (*s == '*')
2306 break;
2307 name = s;
2308
2309 name = s;
2310 while (*s != ',' && *s != ' ' && *s != '\t')
2311 s += 1;
2312 c = *s;
2313 *s = 0x00;
2314 if (strcmp (name, "=") == 0)
2315 cmpltr = 1;
2316 else if (strcmp (name, "<") == 0)
2317 cmpltr = 2;
2318 else if (strcmp (name, "<=") == 0)
2319 cmpltr = 3;
2320 else if (strcasecmp (name, "<<") == 0)
2321 cmpltr = 4;
2322 else if (strcasecmp (name, "<<=") == 0)
2323 cmpltr = 5;
2324 else if (strcasecmp (name, "sv") == 0)
2325 cmpltr = 6;
2326 else if (strcasecmp (name, "od") == 0)
2327 cmpltr = 7;
2328 else if (strcasecmp (name, "tr") == 0)
2329 {
2330 cmpltr = 0;
2331 flag = 1;
2332 }
2333 else if (strcmp (name, "<>") == 0)
2334 {
2335 cmpltr = 1;
2336 flag = 1;
2337 }
2338 else if (strcmp (name, ">=") == 0)
2339 {
2340 cmpltr = 2;
2341 flag = 1;
2342 }
2343 else if (strcmp (name, ">") == 0)
2344 {
2345 cmpltr = 3;
2346 flag = 1;
2347 }
2348 else if (strcasecmp (name, ">>=") == 0)
2349 {
2350 cmpltr = 4;
2351 flag = 1;
2352 }
2353 else if (strcasecmp (name, ">>") == 0)
2354 {
2355 cmpltr = 5;
2356 flag = 1;
2357 }
2358 else if (strcasecmp (name, "nsv") == 0)
2359 {
2360 cmpltr = 6;
2361 flag = 1;
2362 }
2363 else if (strcasecmp (name, "ev") == 0)
2364 {
2365 cmpltr = 7;
2366 flag = 1;
2367 }
2368 /* ",*" is a valid condition. */
2369 else if (*args != 'S')
2370 as_bad (_("Invalid Compare/Subtract Condition: %s"),
2371 name);
2372 *s = c;
2373 }
2374 opcode |= cmpltr << 13;
2375 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2376
2377 /* Handle a non-negated compare condition. */
2378 case 't':
2379 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
2380 if (cmpltr < 0)
2381 {
2382 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s);
2383 cmpltr = 0;
2384 }
2385 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2386
2387 /* Handle a negated compare condition. */
2388 case 'T':
2389 abort ();
2390
2391 /* Handle a 64 bit non-negated compare condition. */
2392 case 'r':
2393 abort ();
2394
2395 /* Handle a 64 bit negated compare condition. */
2396 case 'R':
2397 abort ();
2398
2399 /* Handle a 64 bit cmpib condition. */
2400 case 'Q':
2401 abort ();
2402
2403 /* Handle a negated or non-negated compare/subtract
2404 condition. */
2405 case 'n':
2406 save_s = s;
2407 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
2408 if (cmpltr < 0)
2409 {
2410 s = save_s;
2411 cmpltr = pa_parse_neg_cmpsub_cmpltr (&s, 1);
2412 if (cmpltr < 0)
2413 {
2414 as_bad (_("Invalid Compare/Subtract Condition."));
2415 cmpltr = 0;
2416 }
2417 else
2418 {
2419 /* Negated condition requires an opcode change. */
2420 opcode |= 1 << 27;
2421 }
2422 }
2423
2424 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2425
2426 /* Handle a logical instruction condition. */
2427 case 'L':
2428 case 'l':
2429 cmpltr = 0;
2430 flag = 0;
2431 if (*s == ',')
2432 {
2433 s++;
2434
2435 /* 64 bit conditions. */
2436 if (*args == 'L')
2437 {
2438 if (*s == '*')
2439 s++;
2440 else
2441 break;
2442 }
2443 else if (*s == '*')
2444 break;
2445 name = s;
2446
2447 name = s;
2448 while (*s != ',' && *s != ' ' && *s != '\t')
2449 s += 1;
2450 c = *s;
2451 *s = 0x00;
2452
2453
2454 if (strcmp (name, "=") == 0)
2455 cmpltr = 1;
2456 else if (strcmp (name, "<") == 0)
2457 cmpltr = 2;
2458 else if (strcmp (name, "<=") == 0)
2459 cmpltr = 3;
2460 else if (strcasecmp (name, "od") == 0)
2461 cmpltr = 7;
2462 else if (strcasecmp (name, "tr") == 0)
2463 {
2464 cmpltr = 0;
2465 flag = 1;
2466 }
2467 else if (strcmp (name, "<>") == 0)
2468 {
2469 cmpltr = 1;
2470 flag = 1;
2471 }
2472 else if (strcmp (name, ">=") == 0)
2473 {
2474 cmpltr = 2;
2475 flag = 1;
2476 }
2477 else if (strcmp (name, ">") == 0)
2478 {
2479 cmpltr = 3;
2480 flag = 1;
2481 }
2482 else if (strcasecmp (name, "ev") == 0)
2483 {
2484 cmpltr = 7;
2485 flag = 1;
2486 }
2487 /* ",*" is a valid condition. */
2488 else if (*args != 'L')
2489 as_bad (_("Invalid Logical Instruction Condition."));
2490 *s = c;
2491 }
2492 opcode |= cmpltr << 13;
2493 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2494
2495 /* Handle a shift/extract/deposit condition. */
2496 case 'X':
2497 case 'x':
2498 case 'y':
2499 cmpltr = 0;
2500 if (*s == ',')
2501 {
2502 save_s = s++;
2503
2504 /* 64 bit conditions. */
2505 if (*args == 'X')
2506 {
2507 if (*s == '*')
2508 s++;
2509 else
2510 break;
2511 }
2512 else if (*s == '*')
2513 break;
2514 name = s;
2515
2516 name = s;
2517 while (*s != ',' && *s != ' ' && *s != '\t')
2518 s += 1;
2519 c = *s;
2520 *s = 0x00;
2521 if (strcmp (name, "=") == 0)
2522 cmpltr = 1;
2523 else if (strcmp (name, "<") == 0)
2524 cmpltr = 2;
2525 else if (strcasecmp (name, "od") == 0)
2526 cmpltr = 3;
2527 else if (strcasecmp (name, "tr") == 0)
2528 cmpltr = 4;
2529 else if (strcmp (name, "<>") == 0)
2530 cmpltr = 5;
2531 else if (strcmp (name, ">=") == 0)
2532 cmpltr = 6;
2533 else if (strcasecmp (name, "ev") == 0)
2534 cmpltr = 7;
2535 /* Handle movb,n. Put things back the way they were.
2536 This includes moving s back to where it started. */
2537 else if (strcasecmp (name, "n") == 0 && *args == 'y')
2538 {
2539 *s = c;
2540 s = save_s;
2541 continue;
2542 }
2543 /* ",*" is a valid condition. */
2544 else if (*args != 'X')
2545 as_bad (_("Invalid Shift/Extract/Deposit Condition."));
2546 *s = c;
2547 }
2548 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2549
2550 /* Handle a unit instruction condition. */
2551 case 'U':
2552 case 'u':
2553 cmpltr = 0;
2554 flag = 0;
2555 if (*s == ',')
2556 {
2557 s++;
2558
2559 /* 64 bit conditions. */
2560 if (*args == 'U')
2561 {
2562 if (*s == '*')
2563 s++;
2564 else
2565 break;
2566 }
2567 else if (*s == '*')
2568 break;
2569
2570 if (strncasecmp (s, "sbz", 3) == 0)
2571 {
2572 cmpltr = 2;
2573 s += 3;
2574 }
2575 else if (strncasecmp (s, "shz", 3) == 0)
2576 {
2577 cmpltr = 3;
2578 s += 3;
2579 }
2580 else if (strncasecmp (s, "sdc", 3) == 0)
2581 {
2582 cmpltr = 4;
2583 s += 3;
2584 }
2585 else if (strncasecmp (s, "sbc", 3) == 0)
2586 {
2587 cmpltr = 6;
2588 s += 3;
2589 }
2590 else if (strncasecmp (s, "shc", 3) == 0)
2591 {
2592 cmpltr = 7;
2593 s += 3;
2594 }
2595 else if (strncasecmp (s, "tr", 2) == 0)
2596 {
2597 cmpltr = 0;
2598 flag = 1;
2599 s += 2;
2600 }
2601 else if (strncasecmp (s, "nbz", 3) == 0)
2602 {
2603 cmpltr = 2;
2604 flag = 1;
2605 s += 3;
2606 }
2607 else if (strncasecmp (s, "nhz", 3) == 0)
2608 {
2609 cmpltr = 3;
2610 flag = 1;
2611 s += 3;
2612 }
2613 else if (strncasecmp (s, "ndc", 3) == 0)
2614 {
2615 cmpltr = 4;
2616 flag = 1;
2617 s += 3;
2618 }
2619 else if (strncasecmp (s, "nbc", 3) == 0)
2620 {
2621 cmpltr = 6;
2622 flag = 1;
2623 s += 3;
2624 }
2625 else if (strncasecmp (s, "nhc", 3) == 0)
2626 {
2627 cmpltr = 7;
2628 flag = 1;
2629 s += 3;
2630 }
2631 /* ",*" is a valid condition. */
2632 else if (*args != 'U')
2633 as_bad (_("Invalid Unit Instruction Condition."));
2634 }
2635 opcode |= cmpltr << 13;
2636 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2637
2638 default:
2639 abort ();
2640 }
2641 break;
2642 }
2643
2644 /* Handle a nullification completer for branch instructions. */
2645 case 'n':
2646 nullif = pa_parse_nullif (&s);
2647 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 1);
2648
2649 /* Handle a nullification completer for copr and spop insns. */
2650 case 'N':
2651 nullif = pa_parse_nullif (&s);
2652 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 5);
2653
2654
2655 /* Handle a 11 bit immediate at 31. */
2656 case 'i':
2657 the_insn.field_selector = pa_chk_field_selector (&s);
2658 get_expression (s);
2659 s = expr_end;
2660 if (the_insn.exp.X_op == O_constant)
2661 {
2662 num = evaluate_absolute (&the_insn);
2663 CHECK_FIELD (num, 1023, -1024, 0);
2664 low_sign_unext (num, 11, &num);
2665 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2666 }
2667 else
2668 {
2669 if (is_DP_relative (the_insn.exp))
2670 the_insn.reloc = R_HPPA_GOTOFF;
2671 else if (is_PC_relative (the_insn.exp))
2672 the_insn.reloc = R_HPPA_PCREL_CALL;
2673 else
2674 the_insn.reloc = R_HPPA;
2675 the_insn.format = 11;
2676 continue;
2677 }
2678
2679
2680 /* Handle a 14 bit immediate at 31. */
2681 case 'j':
2682 the_insn.field_selector = pa_chk_field_selector (&s);
2683 get_expression (s);
2684 s = expr_end;
2685 if (the_insn.exp.X_op == O_constant)
2686 {
2687 num = evaluate_absolute (&the_insn);
2688 CHECK_FIELD (num, 8191, -8192, 0);
2689 low_sign_unext (num, 14, &num);
2690 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2691 }
2692 else
2693 {
2694 if (is_DP_relative (the_insn.exp))
2695 the_insn.reloc = R_HPPA_GOTOFF;
2696 else if (is_PC_relative (the_insn.exp))
2697 the_insn.reloc = R_HPPA_PCREL_CALL;
2698 else
2699 the_insn.reloc = R_HPPA;
2700 the_insn.format = 14;
2701 continue;
2702 }
2703
2704 /* Handle a 21 bit immediate at 31. */
2705 case 'k':
2706 the_insn.field_selector = pa_chk_field_selector (&s);
2707 get_expression (s);
2708 s = expr_end;
2709 if (the_insn.exp.X_op == O_constant)
2710 {
2711 num = evaluate_absolute (&the_insn);
2712 CHECK_FIELD (num >> 11, 1048575, -1048576, 0);
2713 dis_assemble_21 (num, &num);
2714 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2715 }
2716 else
2717 {
2718 if (is_DP_relative (the_insn.exp))
2719 the_insn.reloc = R_HPPA_GOTOFF;
2720 else if (is_PC_relative (the_insn.exp))
2721 the_insn.reloc = R_HPPA_PCREL_CALL;
2722 else
2723 the_insn.reloc = R_HPPA;
2724 the_insn.format = 21;
2725 continue;
2726 }
2727
2728 /* Handle a 12 bit branch displacement. */
2729 case 'w':
2730 the_insn.field_selector = pa_chk_field_selector (&s);
2731 get_expression (s);
2732 s = expr_end;
2733 the_insn.pcrel = 1;
2734 if (!strcmp (S_GET_NAME (the_insn.exp.X_add_symbol), "L$0\001"))
2735 {
2736 unsigned int w1, w, result;
2737
2738 num = evaluate_absolute (&the_insn);
2739 if (num % 4)
2740 {
2741 as_bad (_("Branch to unaligned address"));
2742 break;
2743 }
2744 CHECK_FIELD (num, 8199, -8184, 0);
2745 sign_unext ((num - 8) >> 2, 12, &result);
2746 dis_assemble_12 (result, &w1, &w);
2747 INSERT_FIELD_AND_CONTINUE (opcode, ((w1 << 2) | w), 0);
2748 }
2749 else
2750 {
2751 the_insn.reloc = R_HPPA_PCREL_CALL;
2752 the_insn.format = 12;
2753 the_insn.arg_reloc = last_call_desc.arg_reloc;
2754 memset (&last_call_desc, 0, sizeof (struct call_desc));
2755 s = expr_end;
2756 continue;
2757 }
2758
2759 /* Handle a 17 bit branch displacement. */
2760 case 'W':
2761 the_insn.field_selector = pa_chk_field_selector (&s);
2762 get_expression (s);
2763 s = expr_end;
2764 the_insn.pcrel = 1;
2765 if (!the_insn.exp.X_add_symbol
2766 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2767 "L$0\001"))
2768 {
2769 unsigned int w2, w1, w, result;
2770
2771 num = evaluate_absolute (&the_insn);
2772 if (num % 4)
2773 {
2774 as_bad (_("Branch to unaligned address"));
2775 break;
2776 }
2777 CHECK_FIELD (num, 262143, -262144, 0);
2778
2779 if (the_insn.exp.X_add_symbol)
2780 num -= 8;
2781
2782 sign_unext (num >> 2, 17, &result);
2783 dis_assemble_17 (result, &w1, &w2, &w);
2784 INSERT_FIELD_AND_CONTINUE (opcode,
2785 ((w2 << 2) | (w1 << 16) | w), 0);
2786 }
2787 else
2788 {
2789 the_insn.reloc = R_HPPA_PCREL_CALL;
2790 the_insn.format = 17;
2791 the_insn.arg_reloc = last_call_desc.arg_reloc;
2792 memset (&last_call_desc, 0, sizeof (struct call_desc));
2793 continue;
2794 }
2795
2796 /* Handle an absolute 17 bit branch target. */
2797 case 'z':
2798 the_insn.field_selector = pa_chk_field_selector (&s);
2799 get_expression (s);
2800 s = expr_end;
2801 the_insn.pcrel = 0;
2802 if (!the_insn.exp.X_add_symbol
2803 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2804 "L$0\001"))
2805 {
2806 unsigned int w2, w1, w, result;
2807
2808 num = evaluate_absolute (&the_insn);
2809 if (num % 4)
2810 {
2811 as_bad (_("Branch to unaligned address"));
2812 break;
2813 }
2814 CHECK_FIELD (num, 262143, -262144, 0);
2815
2816 if (the_insn.exp.X_add_symbol)
2817 num -= 8;
2818
2819 sign_unext (num >> 2, 17, &result);
2820 dis_assemble_17 (result, &w1, &w2, &w);
2821 INSERT_FIELD_AND_CONTINUE (opcode,
2822 ((w2 << 2) | (w1 << 16) | w), 0);
2823 }
2824 else
2825 {
2826 the_insn.reloc = R_HPPA_ABS_CALL;
2827 the_insn.format = 17;
2828 the_insn.arg_reloc = last_call_desc.arg_reloc;
2829 memset (&last_call_desc, 0, sizeof (struct call_desc));
2830 continue;
2831 }
2832
2833 /* Handle a 2 bit shift count at 25. */
2834 case '.':
2835 num = pa_get_absolute_expression (&the_insn, &s);
2836 if (strict && the_insn.exp.X_op != O_constant)
2837 break;
2838 s = expr_end;
2839 CHECK_FIELD (num, 3, 1, strict);
2840 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2841
2842 /* Handle a 4 bit shift count at 25. */
2843 case '*':
2844 num = pa_get_absolute_expression (&the_insn, &s);
2845 if (strict && the_insn.exp.X_op != O_constant)
2846 break;
2847 s = expr_end;
2848 CHECK_FIELD (num, 15, 0, strict);
2849 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2850
2851 /* Handle a 5 bit shift count at 26. */
2852 case 'p':
2853 num = pa_get_absolute_expression (&the_insn, &s);
2854 if (strict && the_insn.exp.X_op != O_constant)
2855 break;
2856 s = expr_end;
2857 CHECK_FIELD (num, 31, 0, strict);
2858 INSERT_FIELD_AND_CONTINUE (opcode, 31 - num, 5);
2859
2860 /* Handle a 6 bit shift count at 20,22:26. */
2861 case '~':
2862 num = pa_get_absolute_expression (&the_insn, &s);
2863 if (strict && the_insn.exp.X_op != O_constant)
2864 break;
2865 s = expr_end;
2866 CHECK_FIELD (num, 63, 0, strict);
2867 num = 63 - num;
2868 opcode |= (num & 0x20) << 6;
2869 INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 5);
2870
2871 /* Handle a 6 bit field length at 23,27:31. */
2872 case '%':
2873 flag = 0;
2874 num = pa_get_absolute_expression (&the_insn, &s);
2875 if (strict && the_insn.exp.X_op != O_constant)
2876 break;
2877 s = expr_end;
2878 CHECK_FIELD (num, 64, 1, strict);
2879 num--;
2880 opcode |= (num & 0x20) << 3;
2881 num = 31 - (num & 0x1f);
2882 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2883
2884 /* Handle a 6 bit field length at 19,27:31. */
2885 case '|':
2886 num = pa_get_absolute_expression (&the_insn, &s);
2887 if (strict && the_insn.exp.X_op != O_constant)
2888 break;
2889 s = expr_end;
2890 CHECK_FIELD (num, 64, 1, strict);
2891 num--;
2892 opcode |= (num & 0x20) << 7;
2893 num = 31 - (num & 0x1f);
2894 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2895
2896 /* Handle a 5 bit bit position at 26. */
2897 case 'P':
2898 num = pa_get_absolute_expression (&the_insn, &s);
2899 if (strict && the_insn.exp.X_op != O_constant)
2900 break;
2901 s = expr_end;
2902 CHECK_FIELD (num, 31, 0, strict);
2903 INSERT_FIELD_AND_CONTINUE (opcode, num, 5);
2904
2905 /* Handle a 6 bit bit position at 20,22:26. */
2906 case 'q':
2907 num = pa_get_absolute_expression (&the_insn, &s);
2908 if (strict && the_insn.exp.X_op != O_constant)
2909 break;
2910 s = expr_end;
2911 CHECK_FIELD (num, 63, 0, strict);
2912 opcode |= (num & 0x20) << 6;
2913 INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 5);
2914
2915 /* Handle a 5 bit immediate at 10. */
2916 case 'Q':
2917 num = pa_get_absolute_expression (&the_insn, &s);
2918 if (strict && the_insn.exp.X_op != O_constant)
2919 break;
2920 if (the_insn.exp.X_op != O_constant)
2921 break;
2922 s = expr_end;
2923 CHECK_FIELD (num, 31, 0, strict);
2924 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
2925
2926 /* Handle a 9 bit immediate at 28. */
2927 case '$':
2928 num = pa_get_absolute_expression (&the_insn, &s);
2929 if (strict && the_insn.exp.X_op != O_constant)
2930 break;
2931 s = expr_end;
2932 CHECK_FIELD (num, 511, 1, strict);
2933 INSERT_FIELD_AND_CONTINUE (opcode, num, 3);
2934
2935 /* Handle a 13 bit immediate at 18. */
2936 case 'A':
2937 num = pa_get_absolute_expression (&the_insn, &s);
2938 if (strict && the_insn.exp.X_op != O_constant)
2939 break;
2940 s = expr_end;
2941 CHECK_FIELD (num, 8191, 0, strict);
2942 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
2943
2944 /* Handle a 26 bit immediate at 31. */
2945 case 'D':
2946 num = pa_get_absolute_expression (&the_insn, &s);
2947 if (strict && the_insn.exp.X_op != O_constant)
2948 break;
2949 s = expr_end;
2950 CHECK_FIELD (num, 671108864, 0, strict);
2951 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2952
2953 /* Handle a 3 bit SFU identifier at 25. */
2954 case 'v':
2955 if (*s++ != ',')
2956 as_bad (_("Invalid SFU identifier"));
2957 num = pa_get_absolute_expression (&the_insn, &s);
2958 if (strict && the_insn.exp.X_op != O_constant)
2959 break;
2960 s = expr_end;
2961 CHECK_FIELD (num, 7, 0, strict);
2962 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2963
2964 /* Handle a 20 bit SOP field for spop0. */
2965 case 'O':
2966 num = pa_get_absolute_expression (&the_insn, &s);
2967 if (strict && the_insn.exp.X_op != O_constant)
2968 break;
2969 s = expr_end;
2970 CHECK_FIELD (num, 1048575, 0, strict);
2971 num = (num & 0x1f) | ((num & 0x000fffe0) << 6);
2972 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2973
2974 /* Handle a 15bit SOP field for spop1. */
2975 case 'o':
2976 num = pa_get_absolute_expression (&the_insn, &s);
2977 if (strict && the_insn.exp.X_op != O_constant)
2978 break;
2979 s = expr_end;
2980 CHECK_FIELD (num, 32767, 0, strict);
2981 INSERT_FIELD_AND_CONTINUE (opcode, num, 11);
2982
2983 /* Handle a 10bit SOP field for spop3. */
2984 case '0':
2985 num = pa_get_absolute_expression (&the_insn, &s);
2986 if (strict && the_insn.exp.X_op != O_constant)
2987 break;
2988 s = expr_end;
2989 CHECK_FIELD (num, 1023, 0, strict);
2990 num = (num & 0x1f) | ((num & 0x000003e0) << 6);
2991 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2992
2993 /* Handle a 15 bit SOP field for spop2. */
2994 case '1':
2995 num = pa_get_absolute_expression (&the_insn, &s);
2996 if (strict && the_insn.exp.X_op != O_constant)
2997 break;
2998 s = expr_end;
2999 CHECK_FIELD (num, 32767, 0, strict);
3000 num = (num & 0x1f) | ((num & 0x00007fe0) << 6);
3001 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
3002
3003 /* Handle a 3-bit co-processor ID field. */
3004 case 'u':
3005 if (*s++ != ',')
3006 as_bad (_("Invalid COPR identifier"));
3007 num = pa_get_absolute_expression (&the_insn, &s);
3008 if (strict && the_insn.exp.X_op != O_constant)
3009 break;
3010 s = expr_end;
3011 CHECK_FIELD (num, 7, 0, strict);
3012 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
3013
3014 /* Handle a 22bit SOP field for copr. */
3015 case '2':
3016 num = pa_get_absolute_expression (&the_insn, &s);
3017 if (strict && the_insn.exp.X_op != O_constant)
3018 break;
3019 s = expr_end;
3020 CHECK_FIELD (num, 4194303, 0, strict);
3021 num = (num & 0x1f) | ((num & 0x003fffe0) << 4);
3022 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
3023
3024
3025 /* Handle a source FP operand format completer. */
3026 case 'F':
3027 flag = pa_parse_fp_format (&s);
3028 the_insn.fpof1 = flag;
3029 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
3030
3031 /* Handle a destination FP operand format completer. */
3032 case 'G':
3033 /* pa_parse_format needs the ',' prefix. */
3034 s--;
3035 flag = pa_parse_fp_format (&s);
3036 the_insn.fpof2 = flag;
3037 INSERT_FIELD_AND_CONTINUE (opcode, flag, 13);
3038
3039 /* Handle a source FP operand format completer at 20. */
3040 case 'I':
3041 flag = pa_parse_fp_format (&s);
3042 the_insn.fpof1 = flag;
3043 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
3044
3045 /* Handle a floating point operand format at 26.
3046 Only allows single and double precision. */
3047 case 'H':
3048 flag = pa_parse_fp_format (&s);
3049 switch (flag)
3050 {
3051 case SGL:
3052 opcode |= 0x20;
3053 case DBL:
3054 the_insn.fpof1 = flag;
3055 continue;
3056
3057 case QUAD:
3058 case ILLEGAL_FMT:
3059 default:
3060 as_bad (_("Invalid Floating Point Operand Format."));
3061 }
3062 break;
3063
3064 /* Handle all floating point registers. */
3065 case 'f':
3066 switch (*++args)
3067 {
3068 /* Float target register. */
3069 case 't':
3070 /* This should be more strict. Small steps. */
3071 if (strict && *s != '%')
3072 break;
3073 num = pa_parse_number (&s, 0);
3074 CHECK_FIELD (num, 31, 0, 0);
3075 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
3076
3077 /* Float target register with L/R selection. */
3078 case 'T':
3079 {
3080 struct pa_11_fp_reg_struct result;
3081
3082 /* This should be more strict. Small steps. */
3083 if (strict && *s != '%')
3084 break;
3085 pa_parse_number (&s, &result);
3086 CHECK_FIELD (result.number_part, 31, 0, 0);
3087 opcode |= result.number_part;
3088
3089 /* 0x30 opcodes are FP arithmetic operation opcodes
3090 and need to be turned into 0x38 opcodes. This
3091 is not necessary for loads/stores. */
3092 if (need_pa11_opcode (&the_insn, &result)
3093 && ((opcode & 0xfc000000) == 0x30000000))
3094 opcode |= 1 << 27;
3095
3096 INSERT_FIELD_AND_CONTINUE (opcode, result.l_r_select & 1, 6);
3097 }
3098
3099 /* Float operand 1. */
3100 case 'a':
3101 {
3102 struct pa_11_fp_reg_struct result;
3103
3104 /* This should be more strict. Small steps. */
3105 if (strict && *s != '%')
3106 break;
3107 pa_parse_number (&s, &result);
3108 CHECK_FIELD (result.number_part, 31, 0, 0);
3109 opcode |= result.number_part << 21;
3110 if (need_pa11_opcode (&the_insn, &result))
3111 {
3112 opcode |= (result.l_r_select & 1) << 7;
3113 opcode |= 1 << 27;
3114 }
3115 continue;
3116 }
3117
3118 /* Float operand 1 with L/R selection. */
3119 case 'A':
3120 {
3121 struct pa_11_fp_reg_struct result;
3122
3123 /* This should be more strict. Small steps. */
3124 if (strict && *s != '%')
3125 break;
3126 pa_parse_number (&s, &result);
3127 CHECK_FIELD (result.number_part, 31, 0, 0);
3128 opcode |= result.number_part << 21;
3129 opcode |= (result.l_r_select & 1) << 7;
3130 continue;
3131 }
3132
3133 /* Float operand 2. */
3134 case 'b':
3135 {
3136 struct pa_11_fp_reg_struct result;
3137
3138 /* This should be more strict. Small steps. */
3139 if (strict && *s != '%')
3140 break;
3141 pa_parse_number (&s, &result);
3142 CHECK_FIELD (result.number_part, 31, 0, 0);
3143 opcode |= (result.number_part & 0x1f) << 16;
3144 if (need_pa11_opcode (&the_insn, &result))
3145 {
3146 opcode |= (result.l_r_select & 1) << 12;
3147 opcode |= 1 << 27;
3148 }
3149 continue;
3150 }
3151
3152 /* Float operand 2 with L/R selection. */
3153 case 'B':
3154 {
3155 struct pa_11_fp_reg_struct result;
3156
3157 /* This should be more strict. Small steps. */
3158 if (strict && *s != '%')
3159 break;
3160 pa_parse_number (&s, &result);
3161 CHECK_FIELD (result.number_part, 31, 0, 0);
3162 opcode |= (result.number_part & 0x1f) << 16;
3163 opcode |= (result.l_r_select & 1) << 12;
3164 continue;
3165 }
3166
3167 /* Float operand 3 for fmpyfadd, fmpynfadd. */
3168 case 'C':
3169 {
3170 struct pa_11_fp_reg_struct result;
3171 int regnum;
3172
3173 /* This should be more strict. Small steps. */
3174 if (strict && *s != '%')
3175 break;
3176 pa_parse_number (&s, &result);
3177 CHECK_FIELD (result.number_part, 31, 0, 0);
3178 opcode |= (result.number_part & 0x1c) << 11;
3179 opcode |= (result.number_part & 0x3) << 9;
3180 opcode |= (result.l_r_select & 1) << 8;
3181 continue;
3182 }
3183
3184 /* Float mult operand 1 for fmpyadd, fmpysub */
3185 case 'i':
3186 {
3187 struct pa_11_fp_reg_struct result;
3188
3189 /* This should be more strict. Small steps. */
3190 if (strict && *s != '%')
3191 break;
3192 pa_parse_number (&s, &result);
3193 CHECK_FIELD (result.number_part, 31, 0, 0);
3194 if (the_insn.fpof1 == SGL)
3195 {
3196 if (result.number_part < 16)
3197 {
3198 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
3199 break;
3200 }
3201
3202 result.number_part &= 0xF;
3203 result.number_part |= (result.l_r_select & 1) << 4;
3204 }
3205 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 21);
3206 }
3207
3208 /* Float mult operand 2 for fmpyadd, fmpysub */
3209 case 'j':
3210 {
3211 struct pa_11_fp_reg_struct result;
3212
3213 /* This should be more strict. Small steps. */
3214 if (strict && *s != '%')
3215 break;
3216 pa_parse_number (&s, &result);
3217 CHECK_FIELD (result.number_part, 31, 0, 0);
3218 if (the_insn.fpof1 == SGL)
3219 {
3220 if (result.number_part < 16)
3221 {
3222 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
3223 break;
3224 }
3225 result.number_part &= 0xF;
3226 result.number_part |= (result.l_r_select & 1) << 4;
3227 }
3228 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 16);
3229 }
3230
3231 /* Float mult target for fmpyadd, fmpysub */
3232 case 'k':
3233 {
3234 struct pa_11_fp_reg_struct result;
3235
3236 /* This should be more strict. Small steps. */
3237 if (strict && *s != '%')
3238 break;
3239 pa_parse_number (&s, &result);
3240 CHECK_FIELD (result.number_part, 31, 0, 0);
3241 if (the_insn.fpof1 == SGL)
3242 {
3243 if (result.number_part < 16)
3244 {
3245 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
3246 break;
3247 }
3248 result.number_part &= 0xF;
3249 result.number_part |= (result.l_r_select & 1) << 4;
3250 }
3251 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 0);
3252 }
3253
3254 /* Float add operand 1 for fmpyadd, fmpysub */
3255 case 'l':
3256 {
3257 struct pa_11_fp_reg_struct result;
3258
3259 /* This should be more strict. Small steps. */
3260 if (strict && *s != '%')
3261 break;
3262 pa_parse_number (&s, &result);
3263 CHECK_FIELD (result.number_part, 31, 0, 0);
3264 if (the_insn.fpof1 == SGL)
3265 {
3266 if (result.number_part < 16)
3267 {
3268 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
3269 break;
3270 }
3271 result.number_part &= 0xF;
3272 result.number_part |= (result.l_r_select & 1) << 4;
3273 }
3274 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 6);
3275 }
3276
3277 /* Float add target for fmpyadd, fmpysub */
3278 case 'm':
3279 {
3280 struct pa_11_fp_reg_struct result;
3281
3282 /* This should be more strict. Small steps. */
3283 if (strict && *s != '%')
3284 break;
3285 pa_parse_number (&s, &result);
3286 CHECK_FIELD (result.number_part, 31, 0, 0);
3287 if (the_insn.fpof1 == SGL)
3288 {
3289 if (result.number_part < 16)
3290 {
3291 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
3292 break;
3293 }
3294 result.number_part &= 0xF;
3295 result.number_part |= (result.l_r_select & 1) << 4;
3296 }
3297 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 11);
3298 }
3299
3300 default:
3301 abort ();
3302 }
3303 break;
3304
3305 /* Handle L/R register halves like 'x'. */
3306 case 'e':
3307 {
3308 struct pa_11_fp_reg_struct result;
3309
3310 /* This should be more strict. Small steps. */
3311 if (strict && *s != '%')
3312 break;
3313 pa_parse_number (&s, &result);
3314 CHECK_FIELD (result.number_part, 31, 0, 0);
3315 opcode |= (result.number_part & 0x1f) << 16;
3316 if (need_pa11_opcode (&the_insn, &result))
3317 {
3318 opcode |= (result.l_r_select & 1) << 1;
3319 }
3320 continue;
3321 }
3322
3323 default:
3324 abort ();
3325 }
3326 break;
3327 }
3328
3329 failed:
3330 /* Check if the args matched. */
3331 if (match == FALSE)
3332 {
3333 if (&insn[1] - pa_opcodes < (int) NUMOPCODES
3334 && !strcmp (insn->name, insn[1].name))
3335 {
3336 ++insn;
3337 s = argstart;
3338 continue;
3339 }
3340 else
3341 {
3342 as_bad (_("Invalid operands %s"), error_message);
3343 return;
3344 }
3345 }
3346 break;
3347 }
3348
3349 the_insn.opcode = opcode;
3350 }
3351
3352 /* Turn a string in input_line_pointer into a floating point constant of type
3353 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
3354 emitted is stored in *sizeP . An error message or NULL is returned. */
3355
3356 #define MAX_LITTLENUMS 6
3357
3358 char *
3359 md_atof (type, litP, sizeP)
3360 char type;
3361 char *litP;
3362 int *sizeP;
3363 {
3364 int prec;
3365 LITTLENUM_TYPE words[MAX_LITTLENUMS];
3366 LITTLENUM_TYPE *wordP;
3367 char *t;
3368
3369 switch (type)
3370 {
3371
3372 case 'f':
3373 case 'F':
3374 case 's':
3375 case 'S':
3376 prec = 2;
3377 break;
3378
3379 case 'd':
3380 case 'D':
3381 case 'r':
3382 case 'R':
3383 prec = 4;
3384 break;
3385
3386 case 'x':
3387 case 'X':
3388 prec = 6;
3389 break;
3390
3391 case 'p':
3392 case 'P':
3393 prec = 6;
3394 break;
3395
3396 default:
3397 *sizeP = 0;
3398 return _("Bad call to MD_ATOF()");
3399 }
3400 t = atof_ieee (input_line_pointer, type, words);
3401 if (t)
3402 input_line_pointer = t;
3403 *sizeP = prec * sizeof (LITTLENUM_TYPE);
3404 for (wordP = words; prec--;)
3405 {
3406 md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE));
3407 litP += sizeof (LITTLENUM_TYPE);
3408 }
3409 return NULL;
3410 }
3411
3412 /* Write out big-endian. */
3413
3414 void
3415 md_number_to_chars (buf, val, n)
3416 char *buf;
3417 valueT val;
3418 int n;
3419 {
3420 number_to_chars_bigendian (buf, val, n);
3421 }
3422
3423 /* Translate internal representation of relocation info to BFD target
3424 format. */
3425
3426 arelent **
3427 tc_gen_reloc (section, fixp)
3428 asection *section;
3429 fixS *fixp;
3430 {
3431 arelent *reloc;
3432 struct hppa_fix_struct *hppa_fixp;
3433 bfd_reloc_code_real_type code;
3434 static arelent *no_relocs = NULL;
3435 arelent **relocs;
3436 bfd_reloc_code_real_type **codes;
3437 int n_relocs;
3438 int i;
3439
3440 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
3441 if (fixp->fx_addsy == 0)
3442 return &no_relocs;
3443 assert (hppa_fixp != 0);
3444 assert (section != 0);
3445
3446 reloc = (arelent *) xmalloc (sizeof (arelent));
3447
3448 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3449 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3450 codes = (bfd_reloc_code_real_type **) hppa_gen_reloc_type (stdoutput,
3451 fixp->fx_r_type,
3452 hppa_fixp->fx_r_format,
3453 hppa_fixp->fx_r_field,
3454 fixp->fx_subsy != NULL,
3455 symbol_get_bfdsym (fixp->fx_addsy));
3456
3457 if (codes == NULL)
3458 abort ();
3459
3460 for (n_relocs = 0; codes[n_relocs]; n_relocs++)
3461 ;
3462
3463 relocs = (arelent **) xmalloc (sizeof (arelent *) * n_relocs + 1);
3464 reloc = (arelent *) xmalloc (sizeof (arelent) * n_relocs);
3465 for (i = 0; i < n_relocs; i++)
3466 relocs[i] = &reloc[i];
3467
3468 relocs[n_relocs] = NULL;
3469
3470 #ifdef OBJ_ELF
3471 switch (fixp->fx_r_type)
3472 {
3473 default:
3474 assert (n_relocs == 1);
3475
3476 code = *codes[0];
3477
3478 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3479 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3480 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
3481 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
3482 reloc->addend = 0; /* default */
3483
3484 assert (reloc->howto && code == reloc->howto->type);
3485
3486 /* Now, do any processing that is dependent on the relocation type. */
3487 switch (code)
3488 {
3489 case R_PARISC_DLTREL21L:
3490 case R_PARISC_DLTREL14R:
3491 case R_PARISC_DLTREL14F:
3492 case R_PARISC_PLABEL32:
3493 case R_PARISC_PLABEL21L:
3494 case R_PARISC_PLABEL14R:
3495 /* For plabel relocations, the addend of the
3496 relocation should be either 0 (no static link) or 2
3497 (static link required).
3498
3499 FIXME: We always assume no static link!
3500
3501 We also slam a zero addend into the DLT relative relocs;
3502 it doesn't make a lot of sense to use any addend since
3503 it gets you a different (eg unknown) DLT entry. */
3504 reloc->addend = 0;
3505 break;
3506
3507 case R_PARISC_PCREL21L:
3508 case R_PARISC_PCREL17R:
3509 case R_PARISC_PCREL17F:
3510 case R_PARISC_PCREL17C:
3511 case R_PARISC_PCREL14R:
3512 case R_PARISC_PCREL14F:
3513 /* The constant is stored in the instruction. */
3514 reloc->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
3515 break;
3516 default:
3517 reloc->addend = fixp->fx_offset;
3518 break;
3519 }
3520 break;
3521 }
3522 #else /* OBJ_SOM */
3523
3524 /* Walk over reach relocation returned by the BFD backend. */
3525 for (i = 0; i < n_relocs; i++)
3526 {
3527 code = *codes[i];
3528
3529 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3530 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3531 relocs[i]->howto = bfd_reloc_type_lookup (stdoutput, code);
3532 relocs[i]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3533
3534 switch (code)
3535 {
3536 case R_COMP2:
3537 /* The only time we ever use a R_COMP2 fixup is for the difference
3538 of two symbols. With that in mind we fill in all four
3539 relocs now and break out of the loop. */
3540 assert (i == 1);
3541 relocs[0]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
3542 relocs[0]->howto = bfd_reloc_type_lookup (stdoutput, *codes[0]);
3543 relocs[0]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3544 relocs[0]->addend = 0;
3545 relocs[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3546 *relocs[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3547 relocs[1]->howto = bfd_reloc_type_lookup (stdoutput, *codes[1]);
3548 relocs[1]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3549 relocs[1]->addend = 0;
3550 relocs[2]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3551 *relocs[2]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy);
3552 relocs[2]->howto = bfd_reloc_type_lookup (stdoutput, *codes[2]);
3553 relocs[2]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3554 relocs[2]->addend = 0;
3555 relocs[3]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
3556 relocs[3]->howto = bfd_reloc_type_lookup (stdoutput, *codes[3]);
3557 relocs[3]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3558 relocs[3]->addend = 0;
3559 relocs[4]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
3560 relocs[4]->howto = bfd_reloc_type_lookup (stdoutput, *codes[4]);
3561 relocs[4]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3562 relocs[4]->addend = 0;
3563 goto done;
3564 case R_PCREL_CALL:
3565 case R_ABS_CALL:
3566 relocs[i]->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
3567 break;
3568
3569 case R_DLT_REL:
3570 case R_DATA_PLABEL:
3571 case R_CODE_PLABEL:
3572 /* For plabel relocations, the addend of the
3573 relocation should be either 0 (no static link) or 2
3574 (static link required).
3575
3576 FIXME: We always assume no static link!
3577
3578 We also slam a zero addend into the DLT relative relocs;
3579 it doesn't make a lot of sense to use any addend since
3580 it gets you a different (eg unknown) DLT entry. */
3581 relocs[i]->addend = 0;
3582 break;
3583
3584 case R_N_MODE:
3585 case R_S_MODE:
3586 case R_D_MODE:
3587 case R_R_MODE:
3588 case R_FSEL:
3589 case R_LSEL:
3590 case R_RSEL:
3591 case R_BEGIN_BRTAB:
3592 case R_END_BRTAB:
3593 case R_BEGIN_TRY:
3594 case R_N0SEL:
3595 case R_N1SEL:
3596 /* There is no symbol or addend associated with these fixups. */
3597 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3598 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
3599 relocs[i]->addend = 0;
3600 break;
3601
3602 case R_END_TRY:
3603 case R_ENTRY:
3604 case R_EXIT:
3605 /* There is no symbol associated with these fixups. */
3606 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3607 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
3608 relocs[i]->addend = fixp->fx_offset;
3609 break;
3610
3611 default:
3612 relocs[i]->addend = fixp->fx_offset;
3613 }
3614 }
3615
3616 done:
3617 #endif
3618
3619 return relocs;
3620 }
3621
3622 /* Process any machine dependent frag types. */
3623
3624 void
3625 md_convert_frag (abfd, sec, fragP)
3626 register bfd *abfd;
3627 register asection *sec;
3628 register fragS *fragP;
3629 {
3630 unsigned int address;
3631
3632 if (fragP->fr_type == rs_machine_dependent)
3633 {
3634 switch ((int) fragP->fr_subtype)
3635 {
3636 case 0:
3637 fragP->fr_type = rs_fill;
3638 know (fragP->fr_var == 1);
3639 know (fragP->fr_next);
3640 address = fragP->fr_address + fragP->fr_fix;
3641 if (address % fragP->fr_offset)
3642 {
3643 fragP->fr_offset =
3644 fragP->fr_next->fr_address
3645 - fragP->fr_address
3646 - fragP->fr_fix;
3647 }
3648 else
3649 fragP->fr_offset = 0;
3650 break;
3651 }
3652 }
3653 }
3654
3655 /* Round up a section size to the appropriate boundary. */
3656
3657 valueT
3658 md_section_align (segment, size)
3659 asection *segment;
3660 valueT size;
3661 {
3662 int align = bfd_get_section_alignment (stdoutput, segment);
3663 int align2 = (1 << align) - 1;
3664
3665 return (size + align2) & ~align2;
3666 }
3667
3668 /* Return the approximate size of a frag before relaxation has occurred. */
3669 int
3670 md_estimate_size_before_relax (fragP, segment)
3671 register fragS *fragP;
3672 asection *segment;
3673 {
3674 int size;
3675
3676 size = 0;
3677
3678 while ((fragP->fr_fix + size) % fragP->fr_offset)
3679 size++;
3680
3681 return size;
3682 }
3683 \f
3684 CONST char *md_shortopts = "";
3685 struct option md_longopts[] = {
3686 {NULL, no_argument, NULL, 0}
3687 };
3688 size_t md_longopts_size = sizeof(md_longopts);
3689
3690 int
3691 md_parse_option (c, arg)
3692 int c;
3693 char *arg;
3694 {
3695 return 0;
3696 }
3697
3698 void
3699 md_show_usage (stream)
3700 FILE *stream;
3701 {
3702 }
3703 \f
3704 /* We have no need to default values of symbols. */
3705
3706 symbolS *
3707 md_undefined_symbol (name)
3708 char *name;
3709 {
3710 return 0;
3711 }
3712
3713 /* Apply a fixup to an instruction. */
3714
3715 int
3716 md_apply_fix (fixP, valp)
3717 fixS *fixP;
3718 valueT *valp;
3719 {
3720 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
3721 struct hppa_fix_struct *hppa_fixP;
3722 long new_val, result = 0;
3723 unsigned int w1, w2, w, resulti;
3724
3725 hppa_fixP = (struct hppa_fix_struct *) fixP->tc_fix_data;
3726 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3727 never be "applied" (they are just markers). Likewise for
3728 R_HPPA_BEGIN_BRTAB and R_HPPA_END_BRTAB. */
3729 #ifdef OBJ_SOM
3730 if (fixP->fx_r_type == R_HPPA_ENTRY
3731 || fixP->fx_r_type == R_HPPA_EXIT
3732 || fixP->fx_r_type == R_HPPA_BEGIN_BRTAB
3733 || fixP->fx_r_type == R_HPPA_END_BRTAB
3734 || fixP->fx_r_type == R_HPPA_BEGIN_TRY)
3735 return 1;
3736
3737 /* Disgusting. We must set fx_offset ourselves -- R_HPPA_END_TRY
3738 fixups are considered not adjustable, which in turn causes
3739 adjust_reloc_syms to not set fx_offset. Ugh. */
3740 if (fixP->fx_r_type == R_HPPA_END_TRY)
3741 {
3742 fixP->fx_offset = *valp;
3743 return 1;
3744 }
3745 #endif
3746
3747 /* There should have been an HPPA specific fixup associated
3748 with the GAS fixup. */
3749 if (hppa_fixP)
3750 {
3751 unsigned long buf_wd = bfd_get_32 (stdoutput, buf);
3752 unsigned char fmt = bfd_hppa_insn2fmt (buf_wd);
3753
3754 /* If there is a symbol associated with this fixup, then it's something
3755 which will need a SOM relocation (except for some PC-relative relocs).
3756 In such cases we should treat the "val" or "addend" as zero since it
3757 will be added in as needed from fx_offset in tc_gen_reloc. */
3758 if ((fixP->fx_addsy != NULL
3759 || fixP->fx_r_type == R_HPPA_NONE)
3760 #ifdef OBJ_SOM
3761 && fmt != 32
3762 #endif
3763 )
3764 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
3765 #ifdef OBJ_SOM
3766 /* These field selectors imply that we do not want an addend. */
3767 else if (hppa_fixP->fx_r_field == e_psel
3768 || hppa_fixP->fx_r_field == e_rpsel
3769 || hppa_fixP->fx_r_field == e_lpsel
3770 || hppa_fixP->fx_r_field == e_tsel
3771 || hppa_fixP->fx_r_field == e_rtsel
3772 || hppa_fixP->fx_r_field == e_ltsel)
3773 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
3774 /* This is truely disgusting. The machine independent code blindly
3775 adds in the value of the symbol being relocated against. Damn! */
3776 else if (fmt == 32
3777 && fixP->fx_addsy != NULL
3778 && S_GET_SEGMENT (fixP->fx_addsy) != bfd_com_section_ptr)
3779 new_val = hppa_field_adjust (*valp - S_GET_VALUE (fixP->fx_addsy),
3780 0, hppa_fixP->fx_r_field);
3781 #endif
3782 else
3783 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3784
3785 /* Handle pc-relative exceptions from above. */
3786 #define arg_reloc_stub_needed(CALLER, CALLEE) \
3787 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3788 if ((fmt == 12 || fmt == 17 || fmt == 22)
3789 && fixP->fx_addsy
3790 && fixP->fx_pcrel
3791 #ifdef OBJ_SOM
3792 && !arg_reloc_stub_needed ((long) ((obj_symbol_type *)
3793 symbol_get_bfdsym (fixP->fx_addsy))->tc_data.ap.hppa_arg_reloc,
3794 hppa_fixP->fx_arg_reloc)
3795 #endif
3796 && (((int)(*valp) > -262144 && (int)(*valp) < 262143) && fmt != 22)
3797 && S_GET_SEGMENT (fixP->fx_addsy) == hppa_fixP->segment
3798 && !(fixP->fx_subsy
3799 && S_GET_SEGMENT (fixP->fx_subsy) != hppa_fixP->segment))
3800
3801 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3802 #undef arg_reloc_stub_needed
3803
3804 switch (fmt)
3805 {
3806 /* Handle all opcodes with the 'j' operand type. */
3807 case 14:
3808 CHECK_FIELD (new_val, 8191, -8192, 0);
3809
3810 /* Mask off 14 bits to be changed. */
3811 bfd_put_32 (stdoutput,
3812 bfd_get_32 (stdoutput, buf) & 0xffffc000,
3813 buf);
3814 low_sign_unext (new_val, 14, &resulti);
3815 result = resulti;
3816 break;
3817
3818 /* Handle all opcodes with the 'k' operand type. */
3819 case 21:
3820 CHECK_FIELD (new_val, 2097152, 0, 0);
3821
3822 /* Mask off 21 bits to be changed. */
3823 bfd_put_32 (stdoutput,
3824 bfd_get_32 (stdoutput, buf) & 0xffe00000,
3825 buf);
3826 dis_assemble_21 (new_val, &resulti);
3827 result = resulti;
3828 break;
3829
3830 /* Handle all the opcodes with the 'i' operand type. */
3831 case 11:
3832 CHECK_FIELD (new_val, 1023, -1023, 0);
3833
3834 /* Mask off 11 bits to be changed. */
3835 bfd_put_32 (stdoutput,
3836 bfd_get_32 (stdoutput, buf) & 0xffff800,
3837 buf);
3838 low_sign_unext (new_val, 11, &resulti);
3839 result = resulti;
3840 break;
3841
3842 /* Handle all the opcodes with the 'w' operand type. */
3843 case 12:
3844 CHECK_FIELD (new_val, 8199, -8184, 0);
3845
3846 /* Mask off 11 bits to be changed. */
3847 sign_unext ((new_val - 8) >> 2, 12, &resulti);
3848 bfd_put_32 (stdoutput,
3849 bfd_get_32 (stdoutput, buf) & 0xffffe002,
3850 buf);
3851
3852 dis_assemble_12 (resulti, &w1, &w);
3853 result = ((w1 << 2) | w);
3854 break;
3855
3856 /* Handle some of the opcodes with the 'W' operand type. */
3857 case 17:
3858 {
3859 int distance = *valp;
3860
3861 CHECK_FIELD (new_val, 262143, -262144, 0);
3862
3863 /* If this is an absolute branch (ie no link) with an out of
3864 range target, then we want to complain. */
3865 if (fixP->fx_r_type == R_HPPA_PCREL_CALL
3866 && (distance > 262143 || distance < -262144)
3867 && (bfd_get_32 (stdoutput, buf) & 0xffe00000) == 0xe8000000)
3868 CHECK_FIELD (distance, 262143, -262144, 0);
3869
3870 /* Mask off 17 bits to be changed. */
3871 bfd_put_32 (stdoutput,
3872 bfd_get_32 (stdoutput, buf) & 0xffe0e002,
3873 buf);
3874 sign_unext ((new_val - 8) >> 2, 17, &resulti);
3875 dis_assemble_17 (resulti, &w1, &w2, &w);
3876 result = ((w2 << 2) | (w1 << 16) | w);
3877 break;
3878 }
3879
3880 case 32:
3881 result = 0;
3882 bfd_put_32 (stdoutput, new_val, buf);
3883 break;
3884
3885 default:
3886 as_bad (_("Unknown relocation encountered in md_apply_fix."));
3887 return 0;
3888 }
3889
3890 /* Insert the relocation. */
3891 bfd_put_32 (stdoutput, bfd_get_32 (stdoutput, buf) | result, buf);
3892 return 1;
3893 }
3894 else
3895 {
3896 printf (_("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n"),
3897 (unsigned int) fixP, fixP->fx_r_type);
3898 return 0;
3899 }
3900 }
3901
3902 /* Exactly what point is a PC-relative offset relative TO?
3903 On the PA, they're relative to the address of the offset. */
3904
3905 long
3906 md_pcrel_from (fixP)
3907 fixS *fixP;
3908 {
3909 return fixP->fx_where + fixP->fx_frag->fr_address;
3910 }
3911
3912 /* Return nonzero if the input line pointer is at the end of
3913 a statement. */
3914
3915 static int
3916 is_end_of_statement ()
3917 {
3918 return ((*input_line_pointer == '\n')
3919 || (*input_line_pointer == ';')
3920 || (*input_line_pointer == '!'));
3921 }
3922
3923 /* Read a number from S. The number might come in one of many forms,
3924 the most common will be a hex or decimal constant, but it could be
3925 a pre-defined register (Yuk!), or an absolute symbol.
3926
3927 Return a number or -1 for failure.
3928
3929 When parsing PA-89 FP register numbers RESULT will be
3930 the address of a structure to return information about
3931 L/R half of FP registers, store results there as appropriate.
3932
3933 pa_parse_number can not handle negative constants and will fail
3934 horribly if it is passed such a constant. */
3935
3936 static int
3937 pa_parse_number (s, result)
3938 char **s;
3939 struct pa_11_fp_reg_struct *result;
3940 {
3941 int num;
3942 char *name;
3943 char c;
3944 symbolS *sym;
3945 int status;
3946 char *p = *s;
3947
3948 /* Skip whitespace before the number. */
3949 while (*p == ' ' || *p == '\t')
3950 p = p + 1;
3951
3952 /* Store info in RESULT if requested by caller. */
3953 if (result)
3954 {
3955 result->number_part = -1;
3956 result->l_r_select = -1;
3957 }
3958 num = -1;
3959
3960 if (isdigit (*p))
3961 {
3962 /* Looks like a number. */
3963 num = 0;
3964
3965 if (*p == '0' && (*(p + 1) == 'x' || *(p + 1) == 'X'))
3966 {
3967 /* The number is specified in hex. */
3968 p += 2;
3969 while (isdigit (*p) || ((*p >= 'a') && (*p <= 'f'))
3970 || ((*p >= 'A') && (*p <= 'F')))
3971 {
3972 if (isdigit (*p))
3973 num = num * 16 + *p - '0';
3974 else if (*p >= 'a' && *p <= 'f')
3975 num = num * 16 + *p - 'a' + 10;
3976 else
3977 num = num * 16 + *p - 'A' + 10;
3978 ++p;
3979 }
3980 }
3981 else
3982 {
3983 /* The number is specified in decimal. */
3984 while (isdigit (*p))
3985 {
3986 num = num * 10 + *p - '0';
3987 ++p;
3988 }
3989 }
3990
3991 /* Store info in RESULT if requested by the caller. */
3992 if (result)
3993 {
3994 result->number_part = num;
3995
3996 if (IS_R_SELECT (p))
3997 {
3998 result->l_r_select = 1;
3999 ++p;
4000 }
4001 else if (IS_L_SELECT (p))
4002 {
4003 result->l_r_select = 0;
4004 ++p;
4005 }
4006 else
4007 result->l_r_select = 0;
4008 }
4009 }
4010 else if (*p == '%')
4011 {
4012 /* The number might be a predefined register. */
4013 num = 0;
4014 name = p;
4015 p++;
4016 c = *p;
4017 /* Tege hack: Special case for general registers as the general
4018 code makes a binary search with case translation, and is VERY
4019 slow. */
4020 if (c == 'r')
4021 {
4022 p++;
4023 if (*p == 'e' && *(p + 1) == 't'
4024 && (*(p + 2) == '0' || *(p + 2) == '1'))
4025 {
4026 p += 2;
4027 num = *p - '0' + 28;
4028 p++;
4029 }
4030 else if (*p == 'p')
4031 {
4032 num = 2;
4033 p++;
4034 }
4035 else if (!isdigit (*p))
4036 {
4037 if (print_errors)
4038 as_bad (_("Undefined register: '%s'."), name);
4039 num = -1;
4040 }
4041 else
4042 {
4043 do
4044 num = num * 10 + *p++ - '0';
4045 while (isdigit (*p));
4046 }
4047 }
4048 else
4049 {
4050 /* Do a normal register search. */
4051 while (is_part_of_name (c))
4052 {
4053 p = p + 1;
4054 c = *p;
4055 }
4056 *p = 0;
4057 status = reg_name_search (name);
4058 if (status >= 0)
4059 num = status;
4060 else
4061 {
4062 if (print_errors)
4063 as_bad (_("Undefined register: '%s'."), name);
4064 num = -1;
4065 }
4066 *p = c;
4067 }
4068
4069 /* Store info in RESULT if requested by caller. */
4070 if (result)
4071 {
4072 result->number_part = num;
4073 if (IS_R_SELECT (p - 1))
4074 result->l_r_select = 1;
4075 else if (IS_L_SELECT (p - 1))
4076 result->l_r_select = 0;
4077 else
4078 result->l_r_select = 0;
4079 }
4080 }
4081 else
4082 {
4083 /* And finally, it could be a symbol in the absolute section which
4084 is effectively a constant. */
4085 num = 0;
4086 name = p;
4087 c = *p;
4088 while (is_part_of_name (c))
4089 {
4090 p = p + 1;
4091 c = *p;
4092 }
4093 *p = 0;
4094 if ((sym = symbol_find (name)) != NULL)
4095 {
4096 if (S_GET_SEGMENT (sym) == &bfd_abs_section)
4097 num = S_GET_VALUE (sym);
4098 else
4099 {
4100 if (print_errors)
4101 as_bad (_("Non-absolute symbol: '%s'."), name);
4102 num = -1;
4103 }
4104 }
4105 else
4106 {
4107 /* There is where we'd come for an undefined symbol
4108 or for an empty string. For an empty string we
4109 will return zero. That's a concession made for
4110 compatability with the braindamaged HP assemblers. */
4111 if (*name == 0)
4112 num = 0;
4113 else
4114 {
4115 if (print_errors)
4116 as_bad (_("Undefined absolute constant: '%s'."), name);
4117 num = -1;
4118 }
4119 }
4120 *p = c;
4121
4122 /* Store info in RESULT if requested by caller. */
4123 if (result)
4124 {
4125 result->number_part = num;
4126 if (IS_R_SELECT (p - 1))
4127 result->l_r_select = 1;
4128 else if (IS_L_SELECT (p - 1))
4129 result->l_r_select = 0;
4130 else
4131 result->l_r_select = 0;
4132 }
4133 }
4134
4135 *s = p;
4136 return num;
4137 }
4138
4139 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
4140
4141 /* Given NAME, find the register number associated with that name, return
4142 the integer value associated with the given name or -1 on failure. */
4143
4144 static int
4145 reg_name_search (name)
4146 char *name;
4147 {
4148 int middle, low, high;
4149 int cmp;
4150
4151 low = 0;
4152 high = REG_NAME_CNT - 1;
4153
4154 do
4155 {
4156 middle = (low + high) / 2;
4157 cmp = strcasecmp (name, pre_defined_registers[middle].name);
4158 if (cmp < 0)
4159 high = middle - 1;
4160 else if (cmp > 0)
4161 low = middle + 1;
4162 else
4163 return pre_defined_registers[middle].value;
4164 }
4165 while (low <= high);
4166
4167 return -1;
4168 }
4169
4170
4171 /* Return nonzero if the given INSN and L/R information will require
4172 a new PA-1.1 opcode. */
4173
4174 static int
4175 need_pa11_opcode (insn, result)
4176 struct pa_it *insn;
4177 struct pa_11_fp_reg_struct *result;
4178 {
4179 if (result->l_r_select == 1 && !(insn->fpof1 == DBL && insn->fpof2 == DBL))
4180 {
4181 /* If this instruction is specific to a particular architecture,
4182 then set a new architecture. */
4183 if (bfd_get_mach (stdoutput) < pa11)
4184 {
4185 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, pa11))
4186 as_warn (_("could not update architecture and machine"));
4187 }
4188 return TRUE;
4189 }
4190 else
4191 return FALSE;
4192 }
4193
4194 /* Parse a condition for a fcmp instruction. Return the numerical
4195 code associated with the condition. */
4196
4197 static int
4198 pa_parse_fp_cmp_cond (s)
4199 char **s;
4200 {
4201 int cond, i;
4202
4203 cond = 0;
4204
4205 for (i = 0; i < 32; i++)
4206 {
4207 if (strncasecmp (*s, fp_cond_map[i].string,
4208 strlen (fp_cond_map[i].string)) == 0)
4209 {
4210 cond = fp_cond_map[i].cond;
4211 *s += strlen (fp_cond_map[i].string);
4212 /* If not a complete match, back up the input string and
4213 report an error. */
4214 if (**s != ' ' && **s != '\t')
4215 {
4216 *s -= strlen (fp_cond_map[i].string);
4217 break;
4218 }
4219 while (**s == ' ' || **s == '\t')
4220 *s = *s + 1;
4221 return cond;
4222 }
4223 }
4224
4225 as_bad (_("Invalid FP Compare Condition: %s"), *s);
4226
4227 /* Advance over the bogus completer. */
4228 while (**s != ',' && **s != ' ' && **s != '\t')
4229 *s += 1;
4230
4231 return 0;
4232 }
4233
4234
4235 /* Parse an FP operand format completer returning the completer
4236 type. */
4237
4238 static fp_operand_format
4239 pa_parse_fp_format (s)
4240 char **s;
4241 {
4242 int format;
4243
4244 format = SGL;
4245 if (**s == ',')
4246 {
4247 *s += 1;
4248 if (strncasecmp (*s, "sgl", 3) == 0)
4249 {
4250 format = SGL;
4251 *s += 4;
4252 }
4253 else if (strncasecmp (*s, "dbl", 3) == 0)
4254 {
4255 format = DBL;
4256 *s += 4;
4257 }
4258 else if (strncasecmp (*s, "quad", 4) == 0)
4259 {
4260 format = QUAD;
4261 *s += 5;
4262 }
4263 else
4264 {
4265 format = ILLEGAL_FMT;
4266 as_bad (_("Invalid FP Operand Format: %3s"), *s);
4267 }
4268 }
4269
4270 return format;
4271 }
4272
4273 /* Convert from a selector string into a selector type. */
4274
4275 static int
4276 pa_chk_field_selector (str)
4277 char **str;
4278 {
4279 int middle, low, high;
4280 int cmp;
4281 char name[4];
4282
4283 /* Read past any whitespace. */
4284 /* FIXME: should we read past newlines and formfeeds??? */
4285 while (**str == ' ' || **str == '\t' || **str == '\n' || **str == '\f')
4286 *str = *str + 1;
4287
4288 if ((*str)[1] == '\'' || (*str)[1] == '%')
4289 name[0] = tolower ((*str)[0]),
4290 name[1] = 0;
4291 else if ((*str)[2] == '\'' || (*str)[2] == '%')
4292 name[0] = tolower ((*str)[0]),
4293 name[1] = tolower ((*str)[1]),
4294 name[2] = 0;
4295 else if ((*str)[3] == '\'' || (*str)[3] == '%')
4296 name[0] = tolower ((*str)[0]),
4297 name[1] = tolower ((*str)[1]),
4298 name[2] = tolower ((*str)[2]),
4299 name[3] = 0;
4300 else
4301 return e_fsel;
4302
4303 low = 0;
4304 high = sizeof (selector_table) / sizeof (struct selector_entry) - 1;
4305
4306 do
4307 {
4308 middle = (low + high) / 2;
4309 cmp = strcmp (name, selector_table[middle].prefix);
4310 if (cmp < 0)
4311 high = middle - 1;
4312 else if (cmp > 0)
4313 low = middle + 1;
4314 else
4315 {
4316 *str += strlen (name) + 1;
4317 #ifndef OBJ_SOM
4318 if (selector_table[middle].field_selector == e_nsel)
4319 return e_fsel;
4320 #endif
4321 return selector_table[middle].field_selector;
4322 }
4323 }
4324 while (low <= high);
4325
4326 return e_fsel;
4327 }
4328
4329 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
4330
4331 static int
4332 get_expression (str)
4333 char *str;
4334 {
4335 char *save_in;
4336 asection *seg;
4337
4338 save_in = input_line_pointer;
4339 input_line_pointer = str;
4340 seg = expression (&the_insn.exp);
4341 if (!(seg == absolute_section
4342 || seg == undefined_section
4343 || SEG_NORMAL (seg)))
4344 {
4345 as_warn (_("Bad segment in expression."));
4346 expr_end = input_line_pointer;
4347 input_line_pointer = save_in;
4348 return 1;
4349 }
4350 expr_end = input_line_pointer;
4351 input_line_pointer = save_in;
4352 return 0;
4353 }
4354
4355 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
4356 static int
4357 pa_get_absolute_expression (insn, strp)
4358 struct pa_it *insn;
4359 char **strp;
4360 {
4361 char *save_in;
4362
4363 insn->field_selector = pa_chk_field_selector (strp);
4364 save_in = input_line_pointer;
4365 input_line_pointer = *strp;
4366 expression (&insn->exp);
4367 /* This is not perfect, but is a huge improvement over doing nothing.
4368
4369 The PA assembly syntax is ambigious in a variety of ways. Consider
4370 this string "4 %r5" Is that the number 4 followed by the register
4371 r5, or is that 4 MOD 5?
4372
4373 If we get a modulo expresion When looking for an absolute, we try
4374 again cutting off the input string at the first whitespace character. */
4375 if (insn->exp.X_op == O_modulus)
4376 {
4377 char *s, c;
4378 int retval;
4379
4380 input_line_pointer = *strp;
4381 s = *strp;
4382 while (*s != ',' && *s != ' ' && *s != '\t')
4383 s++;
4384
4385 c = *s;
4386 *s = 0;
4387
4388 retval = pa_get_absolute_expression (insn, strp);
4389
4390 input_line_pointer = save_in;
4391 *s = c;
4392 return evaluate_absolute (insn);
4393 }
4394 /* When in strict mode we have a non-match, fix up the pointers
4395 and return to our caller. */
4396 if (insn->exp.X_op != O_constant && strict)
4397 {
4398 expr_end = input_line_pointer;
4399 input_line_pointer = save_in;
4400 return 0;
4401 }
4402 if (insn->exp.X_op != O_constant)
4403 {
4404 as_bad (_("Bad segment (should be absolute)."));
4405 expr_end = input_line_pointer;
4406 input_line_pointer = save_in;
4407 return 0;
4408 }
4409 expr_end = input_line_pointer;
4410 input_line_pointer = save_in;
4411 return evaluate_absolute (insn);
4412 }
4413
4414 /* Evaluate an absolute expression EXP which may be modified by
4415 the selector FIELD_SELECTOR. Return the value of the expression. */
4416 static int
4417 evaluate_absolute (insn)
4418 struct pa_it *insn;
4419 {
4420 int value;
4421 expressionS exp;
4422 int field_selector = insn->field_selector;
4423
4424 exp = insn->exp;
4425 value = exp.X_add_number;
4426
4427 switch (field_selector)
4428 {
4429 /* No change. */
4430 case e_fsel:
4431 break;
4432
4433 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
4434 case e_lssel:
4435 if (value & 0x00000400)
4436 value += 0x800;
4437 value = (value & 0xfffff800) >> 11;
4438 break;
4439
4440 /* Sign extend from bit 21. */
4441 case e_rssel:
4442 if (value & 0x00000400)
4443 value |= 0xfffff800;
4444 else
4445 value &= 0x7ff;
4446 break;
4447
4448 /* Arithmetic shift right 11 bits. */
4449 case e_lsel:
4450 value = (value & 0xfffff800) >> 11;
4451 break;
4452
4453 /* Set bits 0-20 to zero. */
4454 case e_rsel:
4455 value = value & 0x7ff;
4456 break;
4457
4458 /* Add 0x800 and arithmetic shift right 11 bits. */
4459 case e_ldsel:
4460 value += 0x800;
4461 value = (value & 0xfffff800) >> 11;
4462 break;
4463
4464 /* Set bitgs 0-21 to one. */
4465 case e_rdsel:
4466 value |= 0xfffff800;
4467 break;
4468
4469 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
4470 case e_rrsel:
4471 value = (RSEL_ROUND (value) & 0x7ff) + (value - RSEL_ROUND (value));
4472 break;
4473
4474 case e_lrsel:
4475 value = (RSEL_ROUND (value) >> 11) & 0x1fffff;
4476 break;
4477 #undef RSEL_ROUND
4478
4479 default:
4480 BAD_CASE (field_selector);
4481 break;
4482 }
4483 return value;
4484 }
4485
4486 /* Given an argument location specification return the associated
4487 argument location number. */
4488
4489 static unsigned int
4490 pa_build_arg_reloc (type_name)
4491 char *type_name;
4492 {
4493
4494 if (strncasecmp (type_name, "no", 2) == 0)
4495 return 0;
4496 if (strncasecmp (type_name, "gr", 2) == 0)
4497 return 1;
4498 else if (strncasecmp (type_name, "fr", 2) == 0)
4499 return 2;
4500 else if (strncasecmp (type_name, "fu", 2) == 0)
4501 return 3;
4502 else
4503 as_bad (_("Invalid argument location: %s\n"), type_name);
4504
4505 return 0;
4506 }
4507
4508 /* Encode and return an argument relocation specification for
4509 the given register in the location specified by arg_reloc. */
4510
4511 static unsigned int
4512 pa_align_arg_reloc (reg, arg_reloc)
4513 unsigned int reg;
4514 unsigned int arg_reloc;
4515 {
4516 unsigned int new_reloc;
4517
4518 new_reloc = arg_reloc;
4519 switch (reg)
4520 {
4521 case 0:
4522 new_reloc <<= 8;
4523 break;
4524 case 1:
4525 new_reloc <<= 6;
4526 break;
4527 case 2:
4528 new_reloc <<= 4;
4529 break;
4530 case 3:
4531 new_reloc <<= 2;
4532 break;
4533 default:
4534 as_bad (_("Invalid argument description: %d"), reg);
4535 }
4536
4537 return new_reloc;
4538 }
4539
4540 /* Parse a PA nullification completer (,n). Return nonzero if the
4541 completer was found; return zero if no completer was found. */
4542
4543 static int
4544 pa_parse_nullif (s)
4545 char **s;
4546 {
4547 int nullif;
4548
4549 nullif = 0;
4550 if (**s == ',')
4551 {
4552 *s = *s + 1;
4553 if (strncasecmp (*s, "n", 1) == 0)
4554 nullif = 1;
4555 else
4556 {
4557 as_bad (_("Invalid Nullification: (%c)"), **s);
4558 nullif = 0;
4559 }
4560 *s = *s + 1;
4561 }
4562
4563 return nullif;
4564 }
4565
4566 /* Parse a non-negated compare/subtract completer returning the
4567 number (for encoding in instrutions) of the given completer.
4568
4569 ISBRANCH specifies whether or not this is parsing a condition
4570 completer for a branch (vs a nullification completer for a
4571 computational instruction. */
4572
4573 static int
4574 pa_parse_nonneg_cmpsub_cmpltr (s, isbranch)
4575 char **s;
4576 int isbranch;
4577 {
4578 int cmpltr;
4579 char *name = *s + 1;
4580 char c;
4581 char *save_s = *s;
4582 int nullify = 0;
4583
4584 cmpltr = 0;
4585 if (**s == ',')
4586 {
4587 *s += 1;
4588 while (**s != ',' && **s != ' ' && **s != '\t')
4589 *s += 1;
4590 c = **s;
4591 **s = 0x00;
4592
4593
4594 if (strcmp (name, "=") == 0)
4595 {
4596 cmpltr = 1;
4597 }
4598 else if (strcmp (name, "<") == 0)
4599 {
4600 cmpltr = 2;
4601 }
4602 else if (strcmp (name, "<=") == 0)
4603 {
4604 cmpltr = 3;
4605 }
4606 else if (strcmp (name, "<<") == 0)
4607 {
4608 cmpltr = 4;
4609 }
4610 else if (strcmp (name, "<<=") == 0)
4611 {
4612 cmpltr = 5;
4613 }
4614 else if (strcasecmp (name, "sv") == 0)
4615 {
4616 cmpltr = 6;
4617 }
4618 else if (strcasecmp (name, "od") == 0)
4619 {
4620 cmpltr = 7;
4621 }
4622 /* If we have something like addb,n then there is no condition
4623 completer. */
4624 else if (strcasecmp (name, "n") == 0 && isbranch)
4625 {
4626 cmpltr = 0;
4627 nullify = 1;
4628 }
4629 else
4630 {
4631 cmpltr = -1;
4632 }
4633 **s = c;
4634 }
4635
4636 /* Reset pointers if this was really a ,n for a branch instruction. */
4637 if (nullify)
4638 *s = save_s;
4639
4640
4641 return cmpltr;
4642 }
4643
4644 /* Parse a negated compare/subtract completer returning the
4645 number (for encoding in instrutions) of the given completer.
4646
4647 ISBRANCH specifies whether or not this is parsing a condition
4648 completer for a branch (vs a nullification completer for a
4649 computational instruction. */
4650
4651 static int
4652 pa_parse_neg_cmpsub_cmpltr (s, isbranch)
4653 char **s;
4654 int isbranch;
4655 {
4656 int cmpltr;
4657 char *name = *s + 1;
4658 char c;
4659 char *save_s = *s;
4660 int nullify = 0;
4661
4662 cmpltr = 0;
4663 if (**s == ',')
4664 {
4665 *s += 1;
4666 while (**s != ',' && **s != ' ' && **s != '\t')
4667 *s += 1;
4668 c = **s;
4669 **s = 0x00;
4670
4671
4672 if (strcasecmp (name, "tr") == 0)
4673 {
4674 cmpltr = 0;
4675 }
4676 else if (strcmp (name, "<>") == 0)
4677 {
4678 cmpltr = 1;
4679 }
4680 else if (strcmp (name, ">=") == 0)
4681 {
4682 cmpltr = 2;
4683 }
4684 else if (strcmp (name, ">") == 0)
4685 {
4686 cmpltr = 3;
4687 }
4688 else if (strcmp (name, ">>=") == 0)
4689 {
4690 cmpltr = 4;
4691 }
4692 else if (strcmp (name, ">>") == 0)
4693 {
4694 cmpltr = 5;
4695 }
4696 else if (strcasecmp (name, "nsv") == 0)
4697 {
4698 cmpltr = 6;
4699 }
4700 else if (strcasecmp (name, "ev") == 0)
4701 {
4702 cmpltr = 7;
4703 }
4704 /* If we have something like addb,n then there is no condition
4705 completer. */
4706 else if (strcasecmp (name, "n") == 0 && isbranch)
4707 {
4708 cmpltr = 0;
4709 nullify = 1;
4710 }
4711 else
4712 {
4713 cmpltr = -1;
4714 }
4715 **s = c;
4716 }
4717
4718 /* Reset pointers if this was really a ,n for a branch instruction. */
4719 if (nullify)
4720 *s = save_s;
4721
4722
4723 return cmpltr;
4724 }
4725
4726
4727 /* Parse a non-negated addition completer returning the number
4728 (for encoding in instrutions) of the given completer.
4729
4730 ISBRANCH specifies whether or not this is parsing a condition
4731 completer for a branch (vs a nullification completer for a
4732 computational instruction. */
4733
4734 static int
4735 pa_parse_nonneg_add_cmpltr (s, isbranch)
4736 char **s;
4737 int isbranch;
4738 {
4739 int cmpltr;
4740 char *name = *s + 1;
4741 char c;
4742 char *save_s = *s;
4743
4744 cmpltr = 0;
4745 if (**s == ',')
4746 {
4747 *s += 1;
4748 while (**s != ',' && **s != ' ' && **s != '\t')
4749 *s += 1;
4750 c = **s;
4751 **s = 0x00;
4752 if (strcmp (name, "=") == 0)
4753 {
4754 cmpltr = 1;
4755 }
4756 else if (strcmp (name, "<") == 0)
4757 {
4758 cmpltr = 2;
4759 }
4760 else if (strcmp (name, "<=") == 0)
4761 {
4762 cmpltr = 3;
4763 }
4764 else if (strcasecmp (name, "nuv") == 0)
4765 {
4766 cmpltr = 4;
4767 }
4768 else if (strcasecmp (name, "znv") == 0)
4769 {
4770 cmpltr = 5;
4771 }
4772 else if (strcasecmp (name, "sv") == 0)
4773 {
4774 cmpltr = 6;
4775 }
4776 else if (strcasecmp (name, "od") == 0)
4777 {
4778 cmpltr = 7;
4779 }
4780 /* If we have something like addb,n then there is no condition
4781 completer. */
4782 else if (strcasecmp (name, "n") == 0 && isbranch)
4783 {
4784 cmpltr = 0;
4785 }
4786 else
4787 {
4788 cmpltr = -1;
4789 }
4790 **s = c;
4791 }
4792
4793 /* Reset pointers if this was really a ,n for a branch instruction. */
4794 if (cmpltr == 0 && *name == 'n' && isbranch)
4795 *s = save_s;
4796
4797 return cmpltr;
4798 }
4799
4800 /* Parse a negated addition completer returning the number
4801 (for encoding in instrutions) of the given completer.
4802
4803 ISBRANCH specifies whether or not this is parsing a condition
4804 completer for a branch (vs a nullification completer for a
4805 computational instruction). */
4806
4807 static int
4808 pa_parse_neg_add_cmpltr (s, isbranch)
4809 char **s;
4810 int isbranch;
4811 {
4812 int cmpltr;
4813 char *name = *s + 1;
4814 char c;
4815 char *save_s = *s;
4816
4817 cmpltr = 0;
4818 if (**s == ',')
4819 {
4820 *s += 1;
4821 while (**s != ',' && **s != ' ' && **s != '\t')
4822 *s += 1;
4823 c = **s;
4824 **s = 0x00;
4825 if (strcasecmp (name, "tr") == 0)
4826 {
4827 cmpltr = 0;
4828 }
4829 else if (strcmp (name, "<>") == 0)
4830 {
4831 cmpltr = 1;
4832 }
4833 else if (strcmp (name, ">=") == 0)
4834 {
4835 cmpltr = 2;
4836 }
4837 else if (strcmp (name, ">") == 0)
4838 {
4839 cmpltr = 3;
4840 }
4841 else if (strcasecmp (name, "uv") == 0)
4842 {
4843 cmpltr = 4;
4844 }
4845 else if (strcasecmp (name, "vnz") == 0)
4846 {
4847 cmpltr = 5;
4848 }
4849 else if (strcasecmp (name, "nsv") == 0)
4850 {
4851 cmpltr = 6;
4852 }
4853 else if (strcasecmp (name, "ev") == 0)
4854 {
4855 cmpltr = 7;
4856 }
4857 /* If we have something like addb,n then there is no condition
4858 completer. */
4859 else if (strcasecmp (name, "n") == 0 && isbranch)
4860 {
4861 cmpltr = 0;
4862 }
4863 else
4864 {
4865 cmpltr = -1;
4866 }
4867 **s = c;
4868 }
4869
4870 /* Reset pointers if this was really a ,n for a branch instruction. */
4871 if (cmpltr == 0 && *name == 'n' && isbranch)
4872 *s = save_s;
4873
4874 return cmpltr;
4875 }
4876
4877 #ifdef OBJ_SOM
4878 /* Handle an alignment directive. Special so that we can update the
4879 alignment of the subspace if necessary. */
4880 static void
4881 pa_align (bytes)
4882 {
4883 /* We must have a valid space and subspace. */
4884 pa_check_current_space_and_subspace ();
4885
4886 /* Let the generic gas code do most of the work. */
4887 s_align_bytes (bytes);
4888
4889 /* If bytes is a power of 2, then update the current subspace's
4890 alignment if necessary. */
4891 if (log2 (bytes) != -1)
4892 record_alignment (current_subspace->ssd_seg, log2 (bytes));
4893 }
4894 #endif
4895
4896 /* Handle a .BLOCK type pseudo-op. */
4897
4898 static void
4899 pa_block (z)
4900 int z;
4901 {
4902 char *p;
4903 long int temp_fill;
4904 unsigned int temp_size;
4905 unsigned int i;
4906
4907 #ifdef OBJ_SOM
4908 /* We must have a valid space and subspace. */
4909 pa_check_current_space_and_subspace ();
4910 #endif
4911
4912 temp_size = get_absolute_expression ();
4913
4914 /* Always fill with zeros, that's what the HP assembler does. */
4915 temp_fill = 0;
4916
4917 p = frag_var (rs_fill, (int) temp_size, (int) temp_size,
4918 (relax_substateT) 0, (symbolS *) 0, (offsetT) 1, NULL);
4919 memset (p, 0, temp_size);
4920
4921 /* Convert 2 bytes at a time. */
4922
4923 for (i = 0; i < temp_size; i += 2)
4924 {
4925 md_number_to_chars (p + i,
4926 (valueT) temp_fill,
4927 (int) ((temp_size - i) > 2 ? 2 : (temp_size - i)));
4928 }
4929
4930 pa_undefine_label ();
4931 demand_empty_rest_of_line ();
4932 }
4933
4934 /* Handle a .begin_brtab and .end_brtab pseudo-op. */
4935
4936 static void
4937 pa_brtab (begin)
4938 int begin;
4939 {
4940
4941 #ifdef OBJ_SOM
4942 /* The BRTAB relocations are only availble in SOM (to denote
4943 the beginning and end of branch tables). */
4944 char *where = frag_more (0);
4945
4946 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4947 NULL, (offsetT) 0, NULL,
4948 0, begin ? R_HPPA_BEGIN_BRTAB : R_HPPA_END_BRTAB,
4949 e_fsel, 0, 0, NULL);
4950 #endif
4951
4952 demand_empty_rest_of_line ();
4953 }
4954
4955 /* Handle a .begin_try and .end_try pseudo-op. */
4956
4957 static void
4958 pa_try (begin)
4959 int begin;
4960 {
4961 #ifdef OBJ_SOM
4962 expressionS exp;
4963 char *where = frag_more (0);
4964
4965 if (! begin)
4966 expression (&exp);
4967
4968 /* The TRY relocations are only availble in SOM (to denote
4969 the beginning and end of exception handling regions). */
4970
4971 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4972 NULL, (offsetT) 0, begin ? NULL : &exp,
4973 0, begin ? R_HPPA_BEGIN_TRY : R_HPPA_END_TRY,
4974 e_fsel, 0, 0, NULL);
4975 #endif
4976
4977 demand_empty_rest_of_line ();
4978 }
4979
4980 /* Handle a .CALL pseudo-op. This involves storing away information
4981 about where arguments are to be found so the linker can detect
4982 (and correct) argument location mismatches between caller and callee. */
4983
4984 static void
4985 pa_call (unused)
4986 int unused;
4987 {
4988 #ifdef OBJ_SOM
4989 /* We must have a valid space and subspace. */
4990 pa_check_current_space_and_subspace ();
4991 #endif
4992
4993 pa_call_args (&last_call_desc);
4994 demand_empty_rest_of_line ();
4995 }
4996
4997 /* Do the dirty work of building a call descriptor which describes
4998 where the caller placed arguments to a function call. */
4999
5000 static void
5001 pa_call_args (call_desc)
5002 struct call_desc *call_desc;
5003 {
5004 char *name, c, *p;
5005 unsigned int temp, arg_reloc;
5006
5007 while (!is_end_of_statement ())
5008 {
5009 name = input_line_pointer;
5010 c = get_symbol_end ();
5011 /* Process a source argument. */
5012 if ((strncasecmp (name, "argw", 4) == 0))
5013 {
5014 temp = atoi (name + 4);
5015 p = input_line_pointer;
5016 *p = c;
5017 input_line_pointer++;
5018 name = input_line_pointer;
5019 c = get_symbol_end ();
5020 arg_reloc = pa_build_arg_reloc (name);
5021 call_desc->arg_reloc |= pa_align_arg_reloc (temp, arg_reloc);
5022 }
5023 /* Process a return value. */
5024 else if ((strncasecmp (name, "rtnval", 6) == 0))
5025 {
5026 p = input_line_pointer;
5027 *p = c;
5028 input_line_pointer++;
5029 name = input_line_pointer;
5030 c = get_symbol_end ();
5031 arg_reloc = pa_build_arg_reloc (name);
5032 call_desc->arg_reloc |= (arg_reloc & 0x3);
5033 }
5034 else
5035 {
5036 as_bad (_("Invalid .CALL argument: %s"), name);
5037 }
5038 p = input_line_pointer;
5039 *p = c;
5040 if (!is_end_of_statement ())
5041 input_line_pointer++;
5042 }
5043 }
5044
5045 /* Return TRUE if FRAG1 and FRAG2 are the same. */
5046
5047 static int
5048 is_same_frag (frag1, frag2)
5049 fragS *frag1;
5050 fragS *frag2;
5051 {
5052
5053 if (frag1 == NULL)
5054 return (FALSE);
5055 else if (frag2 == NULL)
5056 return (FALSE);
5057 else if (frag1 == frag2)
5058 return (TRUE);
5059 else if (frag2->fr_type == rs_fill && frag2->fr_fix == 0)
5060 return (is_same_frag (frag1, frag2->fr_next));
5061 else
5062 return (FALSE);
5063 }
5064
5065 #ifdef OBJ_ELF
5066 /* Build an entry in the UNWIND subspace from the given function
5067 attributes in CALL_INFO. This is not needed for SOM as using
5068 R_ENTRY and R_EXIT relocations allow the linker to handle building
5069 of the unwind spaces. */
5070
5071 static void
5072 pa_build_unwind_subspace (call_info)
5073 struct call_info *call_info;
5074 {
5075 char *unwind;
5076 asection *seg, *save_seg;
5077 asymbol *sym;
5078 subsegT subseg, save_subseg;
5079 int i, reloc;
5080 char c, *p;
5081
5082 if (bfd_get_arch_info (stdoutput)->bits_per_address == 32)
5083 reloc = R_PARISC_DIR32;
5084 else
5085 reloc = R_PARISC_SEGREL32;
5086
5087 /* Get into the right seg/subseg. This may involve creating
5088 the seg the first time through. Make sure to have the
5089 old seg/subseg so that we can reset things when we are done. */
5090 seg = bfd_get_section_by_name (stdoutput, UNWIND_SECTION_NAME);
5091 if (seg == ASEC_NULL)
5092 {
5093 seg = bfd_make_section_old_way (stdoutput, UNWIND_SECTION_NAME);
5094 bfd_set_section_flags (stdoutput, seg,
5095 SEC_READONLY | SEC_HAS_CONTENTS
5096 | SEC_LOAD | SEC_RELOC | SEC_ALLOC | SEC_DATA);
5097 bfd_set_section_alignment (stdoutput, seg, 2);
5098 }
5099
5100 save_seg = now_seg;
5101 save_subseg = now_subseg;
5102 subseg_set (seg, 0);
5103
5104
5105 /* Get some space to hold relocation information for the unwind
5106 descriptor. */
5107 p = frag_more (4);
5108 md_number_to_chars (p, 0, 4);
5109
5110 /* Relocation info. for start offset of the function. */
5111 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
5112 call_info->start_symbol, (offsetT) 0,
5113 (expressionS *) NULL, 0, reloc,
5114 e_fsel, 32, 0, NULL);
5115
5116 p = frag_more (4);
5117 md_number_to_chars (p, 0, 4);
5118
5119 /* Relocation info. for end offset of the function.
5120
5121 Because we allow reductions of 32bit relocations for ELF, this will be
5122 reduced to section_sym + offset which avoids putting the temporary
5123 symbol into the symbol table. It (should) end up giving the same
5124 value as call_info->start_symbol + function size once the linker is
5125 finished with its work. */
5126
5127 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
5128 call_info->end_symbol, (offsetT) 0,
5129 (expressionS *) NULL, 0, reloc,
5130 e_fsel, 32, 0, NULL);
5131
5132 /* Dump it. */
5133 unwind = (char *) &call_info->ci_unwind;
5134 for (i = 8; i < sizeof (struct unwind_table); i++)
5135 {
5136 c = *(unwind + i);
5137 {
5138 FRAG_APPEND_1_CHAR (c);
5139 }
5140 }
5141
5142 /* Return back to the original segment/subsegment. */
5143 subseg_set (save_seg, save_subseg);
5144 }
5145 #endif
5146
5147 /* Process a .CALLINFO pseudo-op. This information is used later
5148 to build unwind descriptors and maybe one day to support
5149 .ENTER and .LEAVE. */
5150
5151 static void
5152 pa_callinfo (unused)
5153 int unused;
5154 {
5155 char *name, c, *p;
5156 int temp;
5157
5158 #ifdef OBJ_SOM
5159 /* We must have a valid space and subspace. */
5160 pa_check_current_space_and_subspace ();
5161 #endif
5162
5163 /* .CALLINFO must appear within a procedure definition. */
5164 if (!within_procedure)
5165 as_bad (_(".callinfo is not within a procedure definition"));
5166
5167 /* Mark the fact that we found the .CALLINFO for the
5168 current procedure. */
5169 callinfo_found = TRUE;
5170
5171 /* Iterate over the .CALLINFO arguments. */
5172 while (!is_end_of_statement ())
5173 {
5174 name = input_line_pointer;
5175 c = get_symbol_end ();
5176 /* Frame size specification. */
5177 if ((strncasecmp (name, "frame", 5) == 0))
5178 {
5179 p = input_line_pointer;
5180 *p = c;
5181 input_line_pointer++;
5182 temp = get_absolute_expression ();
5183 if ((temp & 0x3) != 0)
5184 {
5185 as_bad (_("FRAME parameter must be a multiple of 8: %d\n"), temp);
5186 temp = 0;
5187 }
5188
5189 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
5190 last_call_info->ci_unwind.descriptor.frame_size = temp / 8;
5191
5192 }
5193 /* Entry register (GR, GR and SR) specifications. */
5194 else if ((strncasecmp (name, "entry_gr", 8) == 0))
5195 {
5196 p = input_line_pointer;
5197 *p = c;
5198 input_line_pointer++;
5199 temp = get_absolute_expression ();
5200 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
5201 even though %r19 is caller saved. I think this is a bug in
5202 the HP assembler, and we are not going to emulate it. */
5203 if (temp < 3 || temp > 18)
5204 as_bad (_("Value for ENTRY_GR must be in the range 3..18\n"));
5205 last_call_info->ci_unwind.descriptor.entry_gr = temp - 2;
5206 }
5207 else if ((strncasecmp (name, "entry_fr", 8) == 0))
5208 {
5209 p = input_line_pointer;
5210 *p = c;
5211 input_line_pointer++;
5212 temp = get_absolute_expression ();
5213 /* Similarly the HP assembler takes 31 as the high bound even
5214 though %fr21 is the last callee saved floating point register. */
5215 if (temp < 12 || temp > 21)
5216 as_bad (_("Value for ENTRY_FR must be in the range 12..21\n"));
5217 last_call_info->ci_unwind.descriptor.entry_fr = temp - 11;
5218 }
5219 else if ((strncasecmp (name, "entry_sr", 8) == 0))
5220 {
5221 p = input_line_pointer;
5222 *p = c;
5223 input_line_pointer++;
5224 temp = get_absolute_expression ();
5225 if (temp != 3)
5226 as_bad (_("Value for ENTRY_SR must be 3\n"));
5227 }
5228 /* Note whether or not this function performs any calls. */
5229 else if ((strncasecmp (name, "calls", 5) == 0) ||
5230 (strncasecmp (name, "caller", 6) == 0))
5231 {
5232 p = input_line_pointer;
5233 *p = c;
5234 }
5235 else if ((strncasecmp (name, "no_calls", 8) == 0))
5236 {
5237 p = input_line_pointer;
5238 *p = c;
5239 }
5240 /* Should RP be saved into the stack. */
5241 else if ((strncasecmp (name, "save_rp", 7) == 0))
5242 {
5243 p = input_line_pointer;
5244 *p = c;
5245 last_call_info->ci_unwind.descriptor.save_rp = 1;
5246 }
5247 /* Likewise for SP. */
5248 else if ((strncasecmp (name, "save_sp", 7) == 0))
5249 {
5250 p = input_line_pointer;
5251 *p = c;
5252 last_call_info->ci_unwind.descriptor.save_sp = 1;
5253 }
5254 /* Is this an unwindable procedure. If so mark it so
5255 in the unwind descriptor. */
5256 else if ((strncasecmp (name, "no_unwind", 9) == 0))
5257 {
5258 p = input_line_pointer;
5259 *p = c;
5260 last_call_info->ci_unwind.descriptor.cannot_unwind = 1;
5261 }
5262 /* Is this an interrupt routine. If so mark it in the
5263 unwind descriptor. */
5264 else if ((strncasecmp (name, "hpux_int", 7) == 0))
5265 {
5266 p = input_line_pointer;
5267 *p = c;
5268 last_call_info->ci_unwind.descriptor.hpux_interrupt_marker = 1;
5269 }
5270 /* Is this a millicode routine. "millicode" isn't in my
5271 assembler manual, but my copy is old. The HP assembler
5272 accepts it, and there's a place in the unwind descriptor
5273 to drop the information, so we'll accept it too. */
5274 else if ((strncasecmp (name, "millicode", 9) == 0))
5275 {
5276 p = input_line_pointer;
5277 *p = c;
5278 last_call_info->ci_unwind.descriptor.millicode = 1;
5279 }
5280 else
5281 {
5282 as_bad (_("Invalid .CALLINFO argument: %s"), name);
5283 *input_line_pointer = c;
5284 }
5285 if (!is_end_of_statement ())
5286 input_line_pointer++;
5287 }
5288
5289 demand_empty_rest_of_line ();
5290 }
5291
5292 /* Switch into the code subspace. */
5293
5294 static void
5295 pa_code (unused)
5296 int unused;
5297 {
5298 #ifdef OBJ_SOM
5299 current_space = is_defined_space ("$TEXT$");
5300 current_subspace
5301 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
5302 #endif
5303 s_text (0);
5304 pa_undefine_label ();
5305 }
5306
5307 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
5308 the .comm pseudo-op has the following symtax:
5309
5310 <label> .comm <length>
5311
5312 where <label> is optional and is a symbol whose address will be the start of
5313 a block of memory <length> bytes long. <length> must be an absolute
5314 expression. <length> bytes will be allocated in the current space
5315 and subspace.
5316
5317 Also note the label may not even be on the same line as the .comm.
5318
5319 This difference in syntax means the colon function will be called
5320 on the symbol before we arrive in pa_comm. colon will set a number
5321 of attributes of the symbol that need to be fixed here. In particular
5322 the value, section pointer, fragment pointer, flags, etc. What
5323 a pain.
5324
5325 This also makes error detection all but impossible. */
5326
5327 static void
5328 pa_comm (unused)
5329 int unused;
5330 {
5331 unsigned int size;
5332 symbolS *symbol;
5333 label_symbol_struct *label_symbol = pa_get_label ();
5334
5335 if (label_symbol)
5336 symbol = label_symbol->lss_label;
5337 else
5338 symbol = NULL;
5339
5340 SKIP_WHITESPACE ();
5341 size = get_absolute_expression ();
5342
5343 if (symbol)
5344 {
5345 S_SET_VALUE (symbol, size);
5346 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
5347 S_SET_EXTERNAL (symbol);
5348
5349 /* colon() has already set the frag to the current location in the
5350 current subspace; we need to reset the fragment to the zero address
5351 fragment. We also need to reset the segment pointer. */
5352 symbol_set_frag (symbol, &zero_address_frag);
5353 }
5354 demand_empty_rest_of_line ();
5355 }
5356
5357 /* Process a .END pseudo-op. */
5358
5359 static void
5360 pa_end (unused)
5361 int unused;
5362 {
5363 demand_empty_rest_of_line ();
5364 }
5365
5366 /* Process a .ENTER pseudo-op. This is not supported. */
5367 static void
5368 pa_enter (unused)
5369 int unused;
5370 {
5371 #ifdef OBJ_SOM
5372 /* We must have a valid space and subspace. */
5373 pa_check_current_space_and_subspace ();
5374 #endif
5375
5376 as_bad (_("The .ENTER pseudo-op is not supported"));
5377 demand_empty_rest_of_line ();
5378 }
5379
5380 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
5381 procesure. */
5382 static void
5383 pa_entry (unused)
5384 int unused;
5385 {
5386 #ifdef OBJ_SOM
5387 /* We must have a valid space and subspace. */
5388 pa_check_current_space_and_subspace ();
5389 #endif
5390
5391 if (!within_procedure)
5392 as_bad (_("Misplaced .entry. Ignored."));
5393 else
5394 {
5395 if (!callinfo_found)
5396 as_bad (_("Missing .callinfo."));
5397 }
5398 demand_empty_rest_of_line ();
5399 within_entry_exit = TRUE;
5400
5401 #ifdef OBJ_SOM
5402 /* SOM defers building of unwind descriptors until the link phase.
5403 The assembler is responsible for creating an R_ENTRY relocation
5404 to mark the beginning of a region and hold the unwind bits, and
5405 for creating an R_EXIT relocation to mark the end of the region.
5406
5407 FIXME. ELF should be using the same conventions! The problem
5408 is an unwind requires too much relocation space. Hmmm. Maybe
5409 if we split the unwind bits up between the relocations which
5410 denote the entry and exit points. */
5411 if (last_call_info->start_symbol != NULL)
5412 {
5413 char *where = frag_more (0);
5414
5415 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
5416 NULL, (offsetT) 0, NULL,
5417 0, R_HPPA_ENTRY, e_fsel, 0, 0,
5418 (int *) &last_call_info->ci_unwind.descriptor);
5419 }
5420 #endif
5421 }
5422
5423 /* Handle a .EQU pseudo-op. */
5424
5425 static void
5426 pa_equ (reg)
5427 int reg;
5428 {
5429 label_symbol_struct *label_symbol = pa_get_label ();
5430 symbolS *symbol;
5431
5432 if (label_symbol)
5433 {
5434 symbol = label_symbol->lss_label;
5435 if (reg)
5436 S_SET_VALUE (symbol, pa_parse_number (&input_line_pointer, 0));
5437 else
5438 S_SET_VALUE (symbol, (unsigned int) get_absolute_expression ());
5439 S_SET_SEGMENT (symbol, bfd_abs_section_ptr);
5440 }
5441 else
5442 {
5443 if (reg)
5444 as_bad (_(".REG must use a label"));
5445 else
5446 as_bad (_(".EQU must use a label"));
5447 }
5448
5449 pa_undefine_label ();
5450 demand_empty_rest_of_line ();
5451 }
5452
5453 /* Helper function. Does processing for the end of a function. This
5454 usually involves creating some relocations or building special
5455 symbols to mark the end of the function. */
5456
5457 static void
5458 process_exit ()
5459 {
5460 char *where;
5461
5462 where = frag_more (0);
5463
5464 #ifdef OBJ_ELF
5465 /* Mark the end of the function, stuff away the location of the frag
5466 for the end of the function, and finally call pa_build_unwind_subspace
5467 to add an entry in the unwind table. */
5468 hppa_elf_mark_end_of_function ();
5469 pa_build_unwind_subspace (last_call_info);
5470 #else
5471 /* SOM defers building of unwind descriptors until the link phase.
5472 The assembler is responsible for creating an R_ENTRY relocation
5473 to mark the beginning of a region and hold the unwind bits, and
5474 for creating an R_EXIT relocation to mark the end of the region.
5475
5476 FIXME. ELF should be using the same conventions! The problem
5477 is an unwind requires too much relocation space. Hmmm. Maybe
5478 if we split the unwind bits up between the relocations which
5479 denote the entry and exit points. */
5480 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
5481 NULL, (offsetT) 0,
5482 NULL, 0, R_HPPA_EXIT, e_fsel, 0, 0,
5483 (int *) &last_call_info->ci_unwind.descriptor + 1);
5484 #endif
5485 }
5486
5487 /* Process a .EXIT pseudo-op. */
5488
5489 static void
5490 pa_exit (unused)
5491 int unused;
5492 {
5493 #ifdef OBJ_SOM
5494 /* We must have a valid space and subspace. */
5495 pa_check_current_space_and_subspace ();
5496 #endif
5497
5498 if (!within_procedure)
5499 as_bad (_(".EXIT must appear within a procedure"));
5500 else
5501 {
5502 if (!callinfo_found)
5503 as_bad (_("Missing .callinfo"));
5504 else
5505 {
5506 if (!within_entry_exit)
5507 as_bad (_("No .ENTRY for this .EXIT"));
5508 else
5509 {
5510 within_entry_exit = FALSE;
5511 process_exit ();
5512 }
5513 }
5514 }
5515 demand_empty_rest_of_line ();
5516 }
5517
5518 /* Process a .EXPORT directive. This makes functions external
5519 and provides information such as argument relocation entries
5520 to callers. */
5521
5522 static void
5523 pa_export (unused)
5524 int unused;
5525 {
5526 char *name, c, *p;
5527 symbolS *symbol;
5528
5529 name = input_line_pointer;
5530 c = get_symbol_end ();
5531 /* Make sure the given symbol exists. */
5532 if ((symbol = symbol_find_or_make (name)) == NULL)
5533 {
5534 as_bad (_("Cannot define export symbol: %s\n"), name);
5535 p = input_line_pointer;
5536 *p = c;
5537 input_line_pointer++;
5538 }
5539 else
5540 {
5541 /* OK. Set the external bits and process argument relocations. */
5542 S_SET_EXTERNAL (symbol);
5543 p = input_line_pointer;
5544 *p = c;
5545 if (!is_end_of_statement ())
5546 {
5547 input_line_pointer++;
5548 pa_type_args (symbol, 1);
5549 }
5550 }
5551
5552 demand_empty_rest_of_line ();
5553 }
5554
5555 /* Helper function to process arguments to a .EXPORT pseudo-op. */
5556
5557 static void
5558 pa_type_args (symbolP, is_export)
5559 symbolS *symbolP;
5560 int is_export;
5561 {
5562 char *name, c, *p;
5563 unsigned int temp, arg_reloc;
5564 pa_symbol_type type = SYMBOL_TYPE_UNKNOWN;
5565 obj_symbol_type *symbol = (obj_symbol_type *) symbol_get_bfdsym (symbolP);
5566
5567 if (strncasecmp (input_line_pointer, "absolute", 8) == 0)
5568
5569 {
5570 input_line_pointer += 8;
5571 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5572 S_SET_SEGMENT (symbolP, bfd_abs_section_ptr);
5573 type = SYMBOL_TYPE_ABSOLUTE;
5574 }
5575 else if (strncasecmp (input_line_pointer, "code", 4) == 0)
5576 {
5577 input_line_pointer += 4;
5578 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
5579 instead one should be IMPORTing/EXPORTing ENTRY types.
5580
5581 Complain if one tries to EXPORT a CODE type since that's never
5582 done. Both GCC and HP C still try to IMPORT CODE types, so
5583 silently fix them to be ENTRY types. */
5584 if (S_IS_FUNCTION (symbolP))
5585 {
5586 if (is_export)
5587 as_tsktsk (_("Using ENTRY rather than CODE in export directive for %s"),
5588 S_GET_NAME (symbolP));
5589
5590 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5591 type = SYMBOL_TYPE_ENTRY;
5592 }
5593 else
5594 {
5595 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5596 type = SYMBOL_TYPE_CODE;
5597 }
5598 }
5599 else if (strncasecmp (input_line_pointer, "data", 4) == 0)
5600 {
5601 input_line_pointer += 4;
5602 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5603 type = SYMBOL_TYPE_DATA;
5604 }
5605 else if ((strncasecmp (input_line_pointer, "entry", 5) == 0))
5606 {
5607 input_line_pointer += 5;
5608 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5609 type = SYMBOL_TYPE_ENTRY;
5610 }
5611 else if (strncasecmp (input_line_pointer, "millicode", 9) == 0)
5612 {
5613 input_line_pointer += 9;
5614 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5615 type = SYMBOL_TYPE_MILLICODE;
5616 }
5617 else if (strncasecmp (input_line_pointer, "plabel", 6) == 0)
5618 {
5619 input_line_pointer += 6;
5620 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5621 type = SYMBOL_TYPE_PLABEL;
5622 }
5623 else if (strncasecmp (input_line_pointer, "pri_prog", 8) == 0)
5624 {
5625 input_line_pointer += 8;
5626 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5627 type = SYMBOL_TYPE_PRI_PROG;
5628 }
5629 else if (strncasecmp (input_line_pointer, "sec_prog", 8) == 0)
5630 {
5631 input_line_pointer += 8;
5632 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5633 type = SYMBOL_TYPE_SEC_PROG;
5634 }
5635
5636 /* SOM requires much more information about symbol types
5637 than BFD understands. This is how we get this information
5638 to the SOM BFD backend. */
5639 #ifdef obj_set_symbol_type
5640 obj_set_symbol_type (symbol_get_bfdsym (symbolP), (int) type);
5641 #endif
5642
5643 /* Now that the type of the exported symbol has been handled,
5644 handle any argument relocation information. */
5645 while (!is_end_of_statement ())
5646 {
5647 if (*input_line_pointer == ',')
5648 input_line_pointer++;
5649 name = input_line_pointer;
5650 c = get_symbol_end ();
5651 /* Argument sources. */
5652 if ((strncasecmp (name, "argw", 4) == 0))
5653 {
5654 p = input_line_pointer;
5655 *p = c;
5656 input_line_pointer++;
5657 temp = atoi (name + 4);
5658 name = input_line_pointer;
5659 c = get_symbol_end ();
5660 arg_reloc = pa_align_arg_reloc (temp, pa_build_arg_reloc (name));
5661 #ifdef OBJ_SOM
5662 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
5663 #endif
5664 *input_line_pointer = c;
5665 }
5666 /* The return value. */
5667 else if ((strncasecmp (name, "rtnval", 6)) == 0)
5668 {
5669 p = input_line_pointer;
5670 *p = c;
5671 input_line_pointer++;
5672 name = input_line_pointer;
5673 c = get_symbol_end ();
5674 arg_reloc = pa_build_arg_reloc (name);
5675 #ifdef OBJ_SOM
5676 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
5677 #endif
5678 *input_line_pointer = c;
5679 }
5680 /* Privelege level. */
5681 else if ((strncasecmp (name, "priv_lev", 8)) == 0)
5682 {
5683 p = input_line_pointer;
5684 *p = c;
5685 input_line_pointer++;
5686 temp = atoi (input_line_pointer);
5687 #ifdef OBJ_SOM
5688 symbol->tc_data.ap.hppa_priv_level = temp;
5689 #endif
5690 c = get_symbol_end ();
5691 *input_line_pointer = c;
5692 }
5693 else
5694 {
5695 as_bad (_("Undefined .EXPORT/.IMPORT argument (ignored): %s"), name);
5696 p = input_line_pointer;
5697 *p = c;
5698 }
5699 if (!is_end_of_statement ())
5700 input_line_pointer++;
5701 }
5702 }
5703
5704 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
5705 assembly file must either be defined in the assembly file, or
5706 explicitly IMPORTED from another. */
5707
5708 static void
5709 pa_import (unused)
5710 int unused;
5711 {
5712 char *name, c, *p;
5713 symbolS *symbol;
5714
5715 name = input_line_pointer;
5716 c = get_symbol_end ();
5717
5718 symbol = symbol_find (name);
5719 /* Ugh. We might be importing a symbol defined earlier in the file,
5720 in which case all the code below will really screw things up
5721 (set the wrong segment, symbol flags & type, etc). */
5722 if (symbol == NULL || !S_IS_DEFINED (symbol))
5723 {
5724 symbol = symbol_find_or_make (name);
5725 p = input_line_pointer;
5726 *p = c;
5727
5728 if (!is_end_of_statement ())
5729 {
5730 input_line_pointer++;
5731 pa_type_args (symbol, 0);
5732 }
5733 else
5734 {
5735 /* Sigh. To be compatable with the HP assembler and to help
5736 poorly written assembly code, we assign a type based on
5737 the the current segment. Note only BSF_FUNCTION really
5738 matters, we do not need to set the full SYMBOL_TYPE_* info. */
5739 if (now_seg == text_section)
5740 symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION;
5741
5742 /* If the section is undefined, then the symbol is undefined
5743 Since this is an import, leave the section undefined. */
5744 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
5745 }
5746 }
5747 else
5748 {
5749 /* The symbol was already defined. Just eat everything up to
5750 the end of the current statement. */
5751 while (!is_end_of_statement ())
5752 input_line_pointer++;
5753 }
5754
5755 demand_empty_rest_of_line ();
5756 }
5757
5758 /* Handle a .LABEL pseudo-op. */
5759
5760 static void
5761 pa_label (unused)
5762 int unused;
5763 {
5764 char *name, c, *p;
5765
5766 name = input_line_pointer;
5767 c = get_symbol_end ();
5768
5769 if (strlen (name) > 0)
5770 {
5771 colon (name);
5772 p = input_line_pointer;
5773 *p = c;
5774 }
5775 else
5776 {
5777 as_warn (_("Missing label name on .LABEL"));
5778 }
5779
5780 if (!is_end_of_statement ())
5781 {
5782 as_warn (_("extra .LABEL arguments ignored."));
5783 ignore_rest_of_line ();
5784 }
5785 demand_empty_rest_of_line ();
5786 }
5787
5788 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
5789
5790 static void
5791 pa_leave (unused)
5792 int unused;
5793 {
5794 #ifdef OBJ_SOM
5795 /* We must have a valid space and subspace. */
5796 pa_check_current_space_and_subspace ();
5797 #endif
5798
5799 as_bad (_("The .LEAVE pseudo-op is not supported"));
5800 demand_empty_rest_of_line ();
5801 }
5802
5803 /* Handle a .LEVEL pseudo-op. */
5804
5805 static void
5806 pa_level (unused)
5807 int unused;
5808 {
5809 char *level;
5810
5811 level = input_line_pointer;
5812 if (strncmp (level, "1.0", 3) == 0)
5813 {
5814 input_line_pointer += 3;
5815 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10))
5816 as_warn (_("could not set architecture and machine"));
5817 }
5818 else if (strncmp (level, "1.1", 3) == 0)
5819 {
5820 input_line_pointer += 3;
5821 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 11))
5822 as_warn (_("could not set architecture and machine"));
5823 }
5824 else if (strncmp (level, "2.0w", 4) == 0)
5825 {
5826 input_line_pointer += 4;
5827 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 25))
5828 as_warn (_("could not set architecture and machine"));
5829 }
5830 else if (strncmp (level, "2.0", 3) == 0)
5831 {
5832 input_line_pointer += 3;
5833 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 20))
5834 as_warn (_("could not set architecture and machine"));
5835 }
5836 else
5837 {
5838 as_bad (_("Unrecognized .LEVEL argument\n"));
5839 ignore_rest_of_line ();
5840 }
5841 demand_empty_rest_of_line ();
5842 }
5843
5844 /* Handle a .ORIGIN pseudo-op. */
5845
5846 static void
5847 pa_origin (unused)
5848 int unused;
5849 {
5850 #ifdef OBJ_SOM
5851 /* We must have a valid space and subspace. */
5852 pa_check_current_space_and_subspace ();
5853 #endif
5854
5855 s_org (0);
5856 pa_undefine_label ();
5857 }
5858
5859 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
5860 is for static functions. FIXME. Should share more code with .EXPORT. */
5861
5862 static void
5863 pa_param (unused)
5864 int unused;
5865 {
5866 char *name, c, *p;
5867 symbolS *symbol;
5868
5869 name = input_line_pointer;
5870 c = get_symbol_end ();
5871
5872 if ((symbol = symbol_find_or_make (name)) == NULL)
5873 {
5874 as_bad (_("Cannot define static symbol: %s\n"), name);
5875 p = input_line_pointer;
5876 *p = c;
5877 input_line_pointer++;
5878 }
5879 else
5880 {
5881 S_CLEAR_EXTERNAL (symbol);
5882 p = input_line_pointer;
5883 *p = c;
5884 if (!is_end_of_statement ())
5885 {
5886 input_line_pointer++;
5887 pa_type_args (symbol, 0);
5888 }
5889 }
5890
5891 demand_empty_rest_of_line ();
5892 }
5893
5894 /* Handle a .PROC pseudo-op. It is used to mark the beginning
5895 of a procedure from a syntatical point of view. */
5896
5897 static void
5898 pa_proc (unused)
5899 int unused;
5900 {
5901 struct call_info *call_info;
5902
5903 #ifdef OBJ_SOM
5904 /* We must have a valid space and subspace. */
5905 pa_check_current_space_and_subspace ();
5906 #endif
5907
5908 if (within_procedure)
5909 as_fatal (_("Nested procedures"));
5910
5911 /* Reset global variables for new procedure. */
5912 callinfo_found = FALSE;
5913 within_procedure = TRUE;
5914
5915 /* Create another call_info structure. */
5916 call_info = (struct call_info *) xmalloc (sizeof (struct call_info));
5917
5918 if (!call_info)
5919 as_fatal (_("Cannot allocate unwind descriptor\n"));
5920
5921 memset (call_info, 0, sizeof (struct call_info));
5922
5923 call_info->ci_next = NULL;
5924
5925 if (call_info_root == NULL)
5926 {
5927 call_info_root = call_info;
5928 last_call_info = call_info;
5929 }
5930 else
5931 {
5932 last_call_info->ci_next = call_info;
5933 last_call_info = call_info;
5934 }
5935
5936 /* set up defaults on call_info structure */
5937
5938 call_info->ci_unwind.descriptor.cannot_unwind = 0;
5939 call_info->ci_unwind.descriptor.region_desc = 1;
5940 call_info->ci_unwind.descriptor.hpux_interrupt_marker = 0;
5941
5942 /* If we got a .PROC pseudo-op, we know that the function is defined
5943 locally. Make sure it gets into the symbol table. */
5944 {
5945 label_symbol_struct *label_symbol = pa_get_label ();
5946
5947 if (label_symbol)
5948 {
5949 if (label_symbol->lss_label)
5950 {
5951 last_call_info->start_symbol = label_symbol->lss_label;
5952 symbol_get_bfdsym (label_symbol->lss_label)->flags |= BSF_FUNCTION;
5953 }
5954 else
5955 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5956 }
5957 else
5958 last_call_info->start_symbol = NULL;
5959 }
5960
5961 demand_empty_rest_of_line ();
5962 }
5963
5964 /* Process the syntatical end of a procedure. Make sure all the
5965 appropriate pseudo-ops were found within the procedure. */
5966
5967 static void
5968 pa_procend (unused)
5969 int unused;
5970 {
5971
5972 #ifdef OBJ_SOM
5973 /* We must have a valid space and subspace. */
5974 pa_check_current_space_and_subspace ();
5975 #endif
5976
5977 /* If we are within a procedure definition, make sure we've
5978 defined a label for the procedure; handle case where the
5979 label was defined after the .PROC directive.
5980
5981 Note there's not need to diddle with the segment or fragment
5982 for the label symbol in this case. We have already switched
5983 into the new $CODE$ subspace at this point. */
5984 if (within_procedure && last_call_info->start_symbol == NULL)
5985 {
5986 label_symbol_struct *label_symbol = pa_get_label ();
5987
5988 if (label_symbol)
5989 {
5990 if (label_symbol->lss_label)
5991 {
5992 last_call_info->start_symbol = label_symbol->lss_label;
5993 symbol_get_bfdsym (label_symbol->lss_label)->flags
5994 |= BSF_FUNCTION;
5995 #ifdef OBJ_SOM
5996 /* Also handle allocation of a fixup to hold the unwind
5997 information when the label appears after the proc/procend. */
5998 if (within_entry_exit)
5999 {
6000 char *where = frag_more (0);
6001
6002 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
6003 NULL, (offsetT) 0, NULL,
6004 0, R_HPPA_ENTRY, e_fsel, 0, 0,
6005 (int *) &last_call_info->ci_unwind.descriptor);
6006 }
6007 #endif
6008 }
6009 else
6010 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
6011 }
6012 else
6013 as_bad (_("Missing function name for .PROC"));
6014 }
6015
6016 if (!within_procedure)
6017 as_bad (_("misplaced .procend"));
6018
6019 if (!callinfo_found)
6020 as_bad (_("Missing .callinfo for this procedure"));
6021
6022 if (within_entry_exit)
6023 as_bad (_("Missing .EXIT for a .ENTRY"));
6024
6025 #ifdef OBJ_ELF
6026 /* ELF needs to mark the end of each function so that it can compute
6027 the size of the function (apparently its needed in the symbol table). */
6028 hppa_elf_mark_end_of_function ();
6029 #endif
6030
6031 within_procedure = FALSE;
6032 demand_empty_rest_of_line ();
6033 pa_undefine_label ();
6034 }
6035
6036 /* If VALUE is an exact power of two between zero and 2^31, then
6037 return log2 (VALUE). Else return -1. */
6038
6039 static int
6040 log2 (value)
6041 int value;
6042 {
6043 int shift = 0;
6044
6045 while ((1 << shift) != value && shift < 32)
6046 shift++;
6047
6048 if (shift >= 32)
6049 return -1;
6050 else
6051 return shift;
6052 }
6053
6054
6055 #ifdef OBJ_SOM
6056 /* Check to make sure we have a valid space and subspace. */
6057
6058 static void
6059 pa_check_current_space_and_subspace ()
6060 {
6061 if (current_space == NULL)
6062 as_fatal (_("Not in a space.\n"));
6063
6064 if (current_subspace == NULL)
6065 as_fatal (_("Not in a subspace.\n"));
6066 }
6067
6068 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
6069 then create a new space entry to hold the information specified
6070 by the parameters to the .SPACE directive. */
6071
6072 static sd_chain_struct *
6073 pa_parse_space_stmt (space_name, create_flag)
6074 char *space_name;
6075 int create_flag;
6076 {
6077 char *name, *ptemp, c;
6078 char loadable, defined, private, sort;
6079 int spnum, temp;
6080 asection *seg = NULL;
6081 sd_chain_struct *space;
6082
6083 /* load default values */
6084 spnum = 0;
6085 sort = 0;
6086 loadable = TRUE;
6087 defined = TRUE;
6088 private = FALSE;
6089 if (strcmp (space_name, "$TEXT$") == 0)
6090 {
6091 seg = pa_def_spaces[0].segment;
6092 defined = pa_def_spaces[0].defined;
6093 private = pa_def_spaces[0].private;
6094 sort = pa_def_spaces[0].sort;
6095 spnum = pa_def_spaces[0].spnum;
6096 }
6097 else if (strcmp (space_name, "$PRIVATE$") == 0)
6098 {
6099 seg = pa_def_spaces[1].segment;
6100 defined = pa_def_spaces[1].defined;
6101 private = pa_def_spaces[1].private;
6102 sort = pa_def_spaces[1].sort;
6103 spnum = pa_def_spaces[1].spnum;
6104 }
6105
6106 if (!is_end_of_statement ())
6107 {
6108 print_errors = FALSE;
6109 ptemp = input_line_pointer + 1;
6110 /* First see if the space was specified as a number rather than
6111 as a name. According to the PA assembly manual the rest of
6112 the line should be ignored. */
6113 temp = pa_parse_number (&ptemp, 0);
6114 if (temp >= 0)
6115 {
6116 spnum = temp;
6117 input_line_pointer = ptemp;
6118 }
6119 else
6120 {
6121 while (!is_end_of_statement ())
6122 {
6123 input_line_pointer++;
6124 name = input_line_pointer;
6125 c = get_symbol_end ();
6126 if ((strncasecmp (name, "spnum", 5) == 0))
6127 {
6128 *input_line_pointer = c;
6129 input_line_pointer++;
6130 spnum = get_absolute_expression ();
6131 }
6132 else if ((strncasecmp (name, "sort", 4) == 0))
6133 {
6134 *input_line_pointer = c;
6135 input_line_pointer++;
6136 sort = get_absolute_expression ();
6137 }
6138 else if ((strncasecmp (name, "unloadable", 10) == 0))
6139 {
6140 *input_line_pointer = c;
6141 loadable = FALSE;
6142 }
6143 else if ((strncasecmp (name, "notdefined", 10) == 0))
6144 {
6145 *input_line_pointer = c;
6146 defined = FALSE;
6147 }
6148 else if ((strncasecmp (name, "private", 7) == 0))
6149 {
6150 *input_line_pointer = c;
6151 private = TRUE;
6152 }
6153 else
6154 {
6155 as_bad (_("Invalid .SPACE argument"));
6156 *input_line_pointer = c;
6157 if (!is_end_of_statement ())
6158 input_line_pointer++;
6159 }
6160 }
6161 }
6162 print_errors = TRUE;
6163 }
6164
6165 if (create_flag && seg == NULL)
6166 seg = subseg_new (space_name, 0);
6167
6168 /* If create_flag is nonzero, then create the new space with
6169 the attributes computed above. Else set the values in
6170 an already existing space -- this can only happen for
6171 the first occurence of a built-in space. */
6172 if (create_flag)
6173 space = create_new_space (space_name, spnum, loadable, defined,
6174 private, sort, seg, 1);
6175 else
6176 {
6177 space = is_defined_space (space_name);
6178 SPACE_SPNUM (space) = spnum;
6179 SPACE_DEFINED (space) = defined & 1;
6180 SPACE_USER_DEFINED (space) = 1;
6181 }
6182
6183 #ifdef obj_set_section_attributes
6184 obj_set_section_attributes (seg, defined, private, sort, spnum);
6185 #endif
6186
6187 return space;
6188 }
6189
6190 /* Handle a .SPACE pseudo-op; this switches the current space to the
6191 given space, creating the new space if necessary. */
6192
6193 static void
6194 pa_space (unused)
6195 int unused;
6196 {
6197 char *name, c, *space_name, *save_s;
6198 int temp;
6199 sd_chain_struct *sd_chain;
6200
6201 if (within_procedure)
6202 {
6203 as_bad (_("Can\'t change spaces within a procedure definition. Ignored"));
6204 ignore_rest_of_line ();
6205 }
6206 else
6207 {
6208 /* Check for some of the predefined spaces. FIXME: most of the code
6209 below is repeated several times, can we extract the common parts
6210 and place them into a subroutine or something similar? */
6211 /* FIXME Is this (and the next IF stmt) really right?
6212 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
6213 if (strncmp (input_line_pointer, "$TEXT$", 6) == 0)
6214 {
6215 input_line_pointer += 6;
6216 sd_chain = is_defined_space ("$TEXT$");
6217 if (sd_chain == NULL)
6218 sd_chain = pa_parse_space_stmt ("$TEXT$", 1);
6219 else if (SPACE_USER_DEFINED (sd_chain) == 0)
6220 sd_chain = pa_parse_space_stmt ("$TEXT$", 0);
6221
6222 current_space = sd_chain;
6223 subseg_set (text_section, sd_chain->sd_last_subseg);
6224 current_subspace
6225 = pa_subsegment_to_subspace (text_section,
6226 sd_chain->sd_last_subseg);
6227 demand_empty_rest_of_line ();
6228 return;
6229 }
6230 if (strncmp (input_line_pointer, "$PRIVATE$", 9) == 0)
6231 {
6232 input_line_pointer += 9;
6233 sd_chain = is_defined_space ("$PRIVATE$");
6234 if (sd_chain == NULL)
6235 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 1);
6236 else if (SPACE_USER_DEFINED (sd_chain) == 0)
6237 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 0);
6238
6239 current_space = sd_chain;
6240 subseg_set (data_section, sd_chain->sd_last_subseg);
6241 current_subspace
6242 = pa_subsegment_to_subspace (data_section,
6243 sd_chain->sd_last_subseg);
6244 demand_empty_rest_of_line ();
6245 return;
6246 }
6247 if (!strncasecmp (input_line_pointer,
6248 GDB_DEBUG_SPACE_NAME,
6249 strlen (GDB_DEBUG_SPACE_NAME)))
6250 {
6251 input_line_pointer += strlen (GDB_DEBUG_SPACE_NAME);
6252 sd_chain = is_defined_space (GDB_DEBUG_SPACE_NAME);
6253 if (sd_chain == NULL)
6254 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 1);
6255 else if (SPACE_USER_DEFINED (sd_chain) == 0)
6256 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 0);
6257
6258 current_space = sd_chain;
6259
6260 {
6261 asection *gdb_section
6262 = bfd_make_section_old_way (stdoutput, GDB_DEBUG_SPACE_NAME);
6263
6264 subseg_set (gdb_section, sd_chain->sd_last_subseg);
6265 current_subspace
6266 = pa_subsegment_to_subspace (gdb_section,
6267 sd_chain->sd_last_subseg);
6268 }
6269 demand_empty_rest_of_line ();
6270 return;
6271 }
6272
6273 /* It could be a space specified by number. */
6274 print_errors = 0;
6275 save_s = input_line_pointer;
6276 if ((temp = pa_parse_number (&input_line_pointer, 0)) >= 0)
6277 {
6278 if ((sd_chain = pa_find_space_by_number (temp)))
6279 {
6280 current_space = sd_chain;
6281
6282 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
6283 current_subspace
6284 = pa_subsegment_to_subspace (sd_chain->sd_seg,
6285 sd_chain->sd_last_subseg);
6286 demand_empty_rest_of_line ();
6287 return;
6288 }
6289 }
6290
6291 /* Not a number, attempt to create a new space. */
6292 print_errors = 1;
6293 input_line_pointer = save_s;
6294 name = input_line_pointer;
6295 c = get_symbol_end ();
6296 space_name = xmalloc (strlen (name) + 1);
6297 strcpy (space_name, name);
6298 *input_line_pointer = c;
6299
6300 sd_chain = pa_parse_space_stmt (space_name, 1);
6301 current_space = sd_chain;
6302
6303 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
6304 current_subspace = pa_subsegment_to_subspace (sd_chain->sd_seg,
6305 sd_chain->sd_last_subseg);
6306 demand_empty_rest_of_line ();
6307 }
6308 }
6309
6310 /* Switch to a new space. (I think). FIXME. */
6311
6312 static void
6313 pa_spnum (unused)
6314 int unused;
6315 {
6316 char *name;
6317 char c;
6318 char *p;
6319 sd_chain_struct *space;
6320
6321 name = input_line_pointer;
6322 c = get_symbol_end ();
6323 space = is_defined_space (name);
6324 if (space)
6325 {
6326 p = frag_more (4);
6327 md_number_to_chars (p, SPACE_SPNUM (space), 4);
6328 }
6329 else
6330 as_warn (_("Undefined space: '%s' Assuming space number = 0."), name);
6331
6332 *input_line_pointer = c;
6333 demand_empty_rest_of_line ();
6334 }
6335
6336 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
6337 given subspace, creating the new subspace if necessary.
6338
6339 FIXME. Should mirror pa_space more closely, in particular how
6340 they're broken up into subroutines. */
6341
6342 static void
6343 pa_subspace (create_new)
6344 int create_new;
6345 {
6346 char *name, *ss_name, c;
6347 char loadable, code_only, common, dup_common, zero, sort;
6348 int i, access, space_index, alignment, quadrant, applicable, flags;
6349 sd_chain_struct *space;
6350 ssd_chain_struct *ssd;
6351 asection *section;
6352
6353 if (current_space == NULL)
6354 as_fatal (_("Must be in a space before changing or declaring subspaces.\n"));
6355
6356 if (within_procedure)
6357 {
6358 as_bad (_("Can\'t change subspaces within a procedure definition. Ignored"));
6359 ignore_rest_of_line ();
6360 }
6361 else
6362 {
6363 name = input_line_pointer;
6364 c = get_symbol_end ();
6365 ss_name = xmalloc (strlen (name) + 1);
6366 strcpy (ss_name, name);
6367 *input_line_pointer = c;
6368
6369 /* Load default values. */
6370 sort = 0;
6371 access = 0x7f;
6372 loadable = 1;
6373 common = 0;
6374 dup_common = 0;
6375 code_only = 0;
6376 zero = 0;
6377 space_index = ~0;
6378 alignment = 1;
6379 quadrant = 0;
6380
6381 space = current_space;
6382 if (create_new)
6383 ssd = NULL;
6384 else
6385 ssd = is_defined_subspace (ss_name);
6386 /* Allow user to override the builtin attributes of subspaces. But
6387 only allow the attributes to be changed once! */
6388 if (ssd && SUBSPACE_DEFINED (ssd))
6389 {
6390 subseg_set (ssd->ssd_seg, ssd->ssd_subseg);
6391 current_subspace = ssd;
6392 if (!is_end_of_statement ())
6393 as_warn (_("Parameters of an existing subspace can\'t be modified"));
6394 demand_empty_rest_of_line ();
6395 return;
6396 }
6397 else
6398 {
6399 /* A new subspace. Load default values if it matches one of
6400 the builtin subspaces. */
6401 i = 0;
6402 while (pa_def_subspaces[i].name)
6403 {
6404 if (strcasecmp (pa_def_subspaces[i].name, ss_name) == 0)
6405 {
6406 loadable = pa_def_subspaces[i].loadable;
6407 common = pa_def_subspaces[i].common;
6408 dup_common = pa_def_subspaces[i].dup_common;
6409 code_only = pa_def_subspaces[i].code_only;
6410 zero = pa_def_subspaces[i].zero;
6411 space_index = pa_def_subspaces[i].space_index;
6412 alignment = pa_def_subspaces[i].alignment;
6413 quadrant = pa_def_subspaces[i].quadrant;
6414 access = pa_def_subspaces[i].access;
6415 sort = pa_def_subspaces[i].sort;
6416 break;
6417 }
6418 i++;
6419 }
6420 }
6421
6422 /* We should be working with a new subspace now. Fill in
6423 any information as specified by the user. */
6424 if (!is_end_of_statement ())
6425 {
6426 input_line_pointer++;
6427 while (!is_end_of_statement ())
6428 {
6429 name = input_line_pointer;
6430 c = get_symbol_end ();
6431 if ((strncasecmp (name, "quad", 4) == 0))
6432 {
6433 *input_line_pointer = c;
6434 input_line_pointer++;
6435 quadrant = get_absolute_expression ();
6436 }
6437 else if ((strncasecmp (name, "align", 5) == 0))
6438 {
6439 *input_line_pointer = c;
6440 input_line_pointer++;
6441 alignment = get_absolute_expression ();
6442 if (log2 (alignment) == -1)
6443 {
6444 as_bad (_("Alignment must be a power of 2"));
6445 alignment = 1;
6446 }
6447 }
6448 else if ((strncasecmp (name, "access", 6) == 0))
6449 {
6450 *input_line_pointer = c;
6451 input_line_pointer++;
6452 access = get_absolute_expression ();
6453 }
6454 else if ((strncasecmp (name, "sort", 4) == 0))
6455 {
6456 *input_line_pointer = c;
6457 input_line_pointer++;
6458 sort = get_absolute_expression ();
6459 }
6460 else if ((strncasecmp (name, "code_only", 9) == 0))
6461 {
6462 *input_line_pointer = c;
6463 code_only = 1;
6464 }
6465 else if ((strncasecmp (name, "unloadable", 10) == 0))
6466 {
6467 *input_line_pointer = c;
6468 loadable = 0;
6469 }
6470 else if ((strncasecmp (name, "common", 6) == 0))
6471 {
6472 *input_line_pointer = c;
6473 common = 1;
6474 }
6475 else if ((strncasecmp (name, "dup_comm", 8) == 0))
6476 {
6477 *input_line_pointer = c;
6478 dup_common = 1;
6479 }
6480 else if ((strncasecmp (name, "zero", 4) == 0))
6481 {
6482 *input_line_pointer = c;
6483 zero = 1;
6484 }
6485 else if ((strncasecmp (name, "first", 5) == 0))
6486 as_bad (_("FIRST not supported as a .SUBSPACE argument"));
6487 else
6488 as_bad (_("Invalid .SUBSPACE argument"));
6489 if (!is_end_of_statement ())
6490 input_line_pointer++;
6491 }
6492 }
6493
6494 /* Compute a reasonable set of BFD flags based on the information
6495 in the .subspace directive. */
6496 applicable = bfd_applicable_section_flags (stdoutput);
6497 flags = 0;
6498 if (loadable)
6499 flags |= (SEC_ALLOC | SEC_LOAD);
6500 if (code_only)
6501 flags |= SEC_CODE;
6502 if (common || dup_common)
6503 flags |= SEC_IS_COMMON;
6504
6505 flags |= SEC_RELOC | SEC_HAS_CONTENTS;
6506
6507 /* This is a zero-filled subspace (eg BSS). */
6508 if (zero)
6509 flags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
6510
6511 applicable &= flags;
6512
6513 /* If this is an existing subspace, then we want to use the
6514 segment already associated with the subspace.
6515
6516 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
6517 lots of sections. It might be a problem in the PA ELF
6518 code, I do not know yet. For now avoid creating anything
6519 but the "standard" sections for ELF. */
6520 if (create_new)
6521 section = subseg_force_new (ss_name, 0);
6522 else if (ssd)
6523 section = ssd->ssd_seg;
6524 else
6525 section = subseg_new (ss_name, 0);
6526
6527 if (zero)
6528 seg_info (section)->bss = 1;
6529
6530 /* Now set the flags. */
6531 bfd_set_section_flags (stdoutput, section, applicable);
6532
6533 /* Record any alignment request for this section. */
6534 record_alignment (section, log2 (alignment));
6535
6536 /* Set the starting offset for this section. */
6537 bfd_set_section_vma (stdoutput, section,
6538 pa_subspace_start (space, quadrant));
6539
6540 /* Now that all the flags are set, update an existing subspace,
6541 or create a new one. */
6542 if (ssd)
6543
6544 current_subspace = update_subspace (space, ss_name, loadable,
6545 code_only, common, dup_common,
6546 sort, zero, access, space_index,
6547 alignment, quadrant,
6548 section);
6549 else
6550 current_subspace = create_new_subspace (space, ss_name, loadable,
6551 code_only, common,
6552 dup_common, zero, sort,
6553 access, space_index,
6554 alignment, quadrant, section);
6555
6556 demand_empty_rest_of_line ();
6557 current_subspace->ssd_seg = section;
6558 subseg_set (current_subspace->ssd_seg, current_subspace->ssd_subseg);
6559 }
6560 SUBSPACE_DEFINED (current_subspace) = 1;
6561 }
6562
6563
6564 /* Create default space and subspace dictionaries. */
6565
6566 static void
6567 pa_spaces_begin ()
6568 {
6569 int i;
6570
6571 space_dict_root = NULL;
6572 space_dict_last = NULL;
6573
6574 i = 0;
6575 while (pa_def_spaces[i].name)
6576 {
6577 char *name;
6578
6579 /* Pick the right name to use for the new section. */
6580 name = pa_def_spaces[i].name;
6581
6582 pa_def_spaces[i].segment = subseg_new (name, 0);
6583 create_new_space (pa_def_spaces[i].name, pa_def_spaces[i].spnum,
6584 pa_def_spaces[i].loadable, pa_def_spaces[i].defined,
6585 pa_def_spaces[i].private, pa_def_spaces[i].sort,
6586 pa_def_spaces[i].segment, 0);
6587 i++;
6588 }
6589
6590 i = 0;
6591 while (pa_def_subspaces[i].name)
6592 {
6593 char *name;
6594 int applicable, subsegment;
6595 asection *segment = NULL;
6596 sd_chain_struct *space;
6597
6598 /* Pick the right name for the new section and pick the right
6599 subsegment number. */
6600 name = pa_def_subspaces[i].name;
6601 subsegment = 0;
6602
6603 /* Create the new section. */
6604 segment = subseg_new (name, subsegment);
6605
6606
6607 /* For SOM we want to replace the standard .text, .data, and .bss
6608 sections with our own. We also want to set BFD flags for
6609 all the built-in subspaces. */
6610 if (!strcmp (pa_def_subspaces[i].name, "$CODE$"))
6611 {
6612 text_section = segment;
6613 applicable = bfd_applicable_section_flags (stdoutput);
6614 bfd_set_section_flags (stdoutput, segment,
6615 applicable & (SEC_ALLOC | SEC_LOAD
6616 | SEC_RELOC | SEC_CODE
6617 | SEC_READONLY
6618 | SEC_HAS_CONTENTS));
6619 }
6620 else if (!strcmp (pa_def_subspaces[i].name, "$DATA$"))
6621 {
6622 data_section = segment;
6623 applicable = bfd_applicable_section_flags (stdoutput);
6624 bfd_set_section_flags (stdoutput, segment,
6625 applicable & (SEC_ALLOC | SEC_LOAD
6626 | SEC_RELOC
6627 | SEC_HAS_CONTENTS));
6628
6629
6630 }
6631 else if (!strcmp (pa_def_subspaces[i].name, "$BSS$"))
6632 {
6633 bss_section = segment;
6634 applicable = bfd_applicable_section_flags (stdoutput);
6635 bfd_set_section_flags (stdoutput, segment,
6636 applicable & SEC_ALLOC);
6637 }
6638 else if (!strcmp (pa_def_subspaces[i].name, "$LIT$"))
6639 {
6640 applicable = bfd_applicable_section_flags (stdoutput);
6641 bfd_set_section_flags (stdoutput, segment,
6642 applicable & (SEC_ALLOC | SEC_LOAD
6643 | SEC_RELOC
6644 | SEC_READONLY
6645 | SEC_HAS_CONTENTS));
6646 }
6647 else if (!strcmp (pa_def_subspaces[i].name, "$MILLICODE$"))
6648 {
6649 applicable = bfd_applicable_section_flags (stdoutput);
6650 bfd_set_section_flags (stdoutput, segment,
6651 applicable & (SEC_ALLOC | SEC_LOAD
6652 | SEC_RELOC
6653 | SEC_READONLY
6654 | SEC_HAS_CONTENTS));
6655 }
6656 else if (!strcmp (pa_def_subspaces[i].name, "$UNWIND$"))
6657 {
6658 applicable = bfd_applicable_section_flags (stdoutput);
6659 bfd_set_section_flags (stdoutput, segment,
6660 applicable & (SEC_ALLOC | SEC_LOAD
6661 | SEC_RELOC
6662 | SEC_READONLY
6663 | SEC_HAS_CONTENTS));
6664 }
6665
6666 /* Find the space associated with this subspace. */
6667 space = pa_segment_to_space (pa_def_spaces[pa_def_subspaces[i].
6668 def_space_index].segment);
6669 if (space == NULL)
6670 {
6671 as_fatal (_("Internal error: Unable to find containing space for %s."),
6672 pa_def_subspaces[i].name);
6673 }
6674
6675 create_new_subspace (space, name,
6676 pa_def_subspaces[i].loadable,
6677 pa_def_subspaces[i].code_only,
6678 pa_def_subspaces[i].common,
6679 pa_def_subspaces[i].dup_common,
6680 pa_def_subspaces[i].zero,
6681 pa_def_subspaces[i].sort,
6682 pa_def_subspaces[i].access,
6683 pa_def_subspaces[i].space_index,
6684 pa_def_subspaces[i].alignment,
6685 pa_def_subspaces[i].quadrant,
6686 segment);
6687 i++;
6688 }
6689 }
6690
6691
6692
6693 /* Create a new space NAME, with the appropriate flags as defined
6694 by the given parameters. */
6695
6696 static sd_chain_struct *
6697 create_new_space (name, spnum, loadable, defined, private,
6698 sort, seg, user_defined)
6699 char *name;
6700 int spnum;
6701 int loadable;
6702 int defined;
6703 int private;
6704 int sort;
6705 asection *seg;
6706 int user_defined;
6707 {
6708 sd_chain_struct *chain_entry;
6709
6710 chain_entry = (sd_chain_struct *) xmalloc (sizeof (sd_chain_struct));
6711 if (!chain_entry)
6712 as_fatal (_("Out of memory: could not allocate new space chain entry: %s\n"),
6713 name);
6714
6715 SPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6716 strcpy (SPACE_NAME (chain_entry), name);
6717 SPACE_DEFINED (chain_entry) = defined;
6718 SPACE_USER_DEFINED (chain_entry) = user_defined;
6719 SPACE_SPNUM (chain_entry) = spnum;
6720
6721 chain_entry->sd_seg = seg;
6722 chain_entry->sd_last_subseg = -1;
6723 chain_entry->sd_subspaces = NULL;
6724 chain_entry->sd_next = NULL;
6725
6726 /* Find spot for the new space based on its sort key. */
6727 if (!space_dict_last)
6728 space_dict_last = chain_entry;
6729
6730 if (space_dict_root == NULL)
6731 space_dict_root = chain_entry;
6732 else
6733 {
6734 sd_chain_struct *chain_pointer;
6735 sd_chain_struct *prev_chain_pointer;
6736
6737 chain_pointer = space_dict_root;
6738 prev_chain_pointer = NULL;
6739
6740 while (chain_pointer)
6741 {
6742 prev_chain_pointer = chain_pointer;
6743 chain_pointer = chain_pointer->sd_next;
6744 }
6745
6746 /* At this point we've found the correct place to add the new
6747 entry. So add it and update the linked lists as appropriate. */
6748 if (prev_chain_pointer)
6749 {
6750 chain_entry->sd_next = chain_pointer;
6751 prev_chain_pointer->sd_next = chain_entry;
6752 }
6753 else
6754 {
6755 space_dict_root = chain_entry;
6756 chain_entry->sd_next = chain_pointer;
6757 }
6758
6759 if (chain_entry->sd_next == NULL)
6760 space_dict_last = chain_entry;
6761 }
6762
6763 /* This is here to catch predefined spaces which do not get
6764 modified by the user's input. Another call is found at
6765 the bottom of pa_parse_space_stmt to handle cases where
6766 the user modifies a predefined space. */
6767 #ifdef obj_set_section_attributes
6768 obj_set_section_attributes (seg, defined, private, sort, spnum);
6769 #endif
6770
6771 return chain_entry;
6772 }
6773
6774 /* Create a new subspace NAME, with the appropriate flags as defined
6775 by the given parameters.
6776
6777 Add the new subspace to the subspace dictionary chain in numerical
6778 order as defined by the SORT entries. */
6779
6780 static ssd_chain_struct *
6781 create_new_subspace (space, name, loadable, code_only, common,
6782 dup_common, is_zero, sort, access, space_index,
6783 alignment, quadrant, seg)
6784 sd_chain_struct *space;
6785 char *name;
6786 int loadable, code_only, common, dup_common, is_zero;
6787 int sort;
6788 int access;
6789 int space_index;
6790 int alignment;
6791 int quadrant;
6792 asection *seg;
6793 {
6794 ssd_chain_struct *chain_entry;
6795
6796 chain_entry = (ssd_chain_struct *) xmalloc (sizeof (ssd_chain_struct));
6797 if (!chain_entry)
6798 as_fatal (_("Out of memory: could not allocate new subspace chain entry: %s\n"), name);
6799
6800 SUBSPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6801 strcpy (SUBSPACE_NAME (chain_entry), name);
6802
6803 /* Initialize subspace_defined. When we hit a .subspace directive
6804 we'll set it to 1 which "locks-in" the subspace attributes. */
6805 SUBSPACE_DEFINED (chain_entry) = 0;
6806
6807 chain_entry->ssd_subseg = 0;
6808 chain_entry->ssd_seg = seg;
6809 chain_entry->ssd_next = NULL;
6810
6811 /* Find spot for the new subspace based on its sort key. */
6812 if (space->sd_subspaces == NULL)
6813 space->sd_subspaces = chain_entry;
6814 else
6815 {
6816 ssd_chain_struct *chain_pointer;
6817 ssd_chain_struct *prev_chain_pointer;
6818
6819 chain_pointer = space->sd_subspaces;
6820 prev_chain_pointer = NULL;
6821
6822 while (chain_pointer)
6823 {
6824 prev_chain_pointer = chain_pointer;
6825 chain_pointer = chain_pointer->ssd_next;
6826 }
6827
6828 /* Now we have somewhere to put the new entry. Insert it and update
6829 the links. */
6830 if (prev_chain_pointer)
6831 {
6832 chain_entry->ssd_next = chain_pointer;
6833 prev_chain_pointer->ssd_next = chain_entry;
6834 }
6835 else
6836 {
6837 space->sd_subspaces = chain_entry;
6838 chain_entry->ssd_next = chain_pointer;
6839 }
6840 }
6841
6842 #ifdef obj_set_subsection_attributes
6843 obj_set_subsection_attributes (seg, space->sd_seg, access,
6844 sort, quadrant);
6845 #endif
6846
6847 return chain_entry;
6848 }
6849
6850 /* Update the information for the given subspace based upon the
6851 various arguments. Return the modified subspace chain entry. */
6852
6853 static ssd_chain_struct *
6854 update_subspace (space, name, loadable, code_only, common, dup_common, sort,
6855 zero, access, space_index, alignment, quadrant, section)
6856 sd_chain_struct *space;
6857 char *name;
6858 int loadable;
6859 int code_only;
6860 int common;
6861 int dup_common;
6862 int zero;
6863 int sort;
6864 int access;
6865 int space_index;
6866 int alignment;
6867 int quadrant;
6868 asection *section;
6869 {
6870 ssd_chain_struct *chain_entry;
6871
6872 chain_entry = is_defined_subspace (name);
6873
6874 #ifdef obj_set_subsection_attributes
6875 obj_set_subsection_attributes (section, space->sd_seg, access,
6876 sort, quadrant);
6877 #endif
6878
6879 return chain_entry;
6880 }
6881
6882 /* Return the space chain entry for the space with the name NAME or
6883 NULL if no such space exists. */
6884
6885 static sd_chain_struct *
6886 is_defined_space (name)
6887 char *name;
6888 {
6889 sd_chain_struct *chain_pointer;
6890
6891 for (chain_pointer = space_dict_root;
6892 chain_pointer;
6893 chain_pointer = chain_pointer->sd_next)
6894 {
6895 if (strcmp (SPACE_NAME (chain_pointer), name) == 0)
6896 return chain_pointer;
6897 }
6898
6899 /* No mapping from segment to space was found. Return NULL. */
6900 return NULL;
6901 }
6902
6903 /* Find and return the space associated with the given seg. If no mapping
6904 from the given seg to a space is found, then return NULL.
6905
6906 Unlike subspaces, the number of spaces is not expected to grow much,
6907 so a linear exhaustive search is OK here. */
6908
6909 static sd_chain_struct *
6910 pa_segment_to_space (seg)
6911 asection *seg;
6912 {
6913 sd_chain_struct *space_chain;
6914
6915 /* Walk through each space looking for the correct mapping. */
6916 for (space_chain = space_dict_root;
6917 space_chain;
6918 space_chain = space_chain->sd_next)
6919 {
6920 if (space_chain->sd_seg == seg)
6921 return space_chain;
6922 }
6923
6924 /* Mapping was not found. Return NULL. */
6925 return NULL;
6926 }
6927
6928 /* Return the space chain entry for the subspace with the name NAME or
6929 NULL if no such subspace exists.
6930
6931 Uses a linear search through all the spaces and subspaces, this may
6932 not be appropriate if we ever being placing each function in its
6933 own subspace. */
6934
6935 static ssd_chain_struct *
6936 is_defined_subspace (name)
6937 char *name;
6938 {
6939 sd_chain_struct *space_chain;
6940 ssd_chain_struct *subspace_chain;
6941
6942 /* Walk through each space. */
6943 for (space_chain = space_dict_root;
6944 space_chain;
6945 space_chain = space_chain->sd_next)
6946 {
6947 /* Walk through each subspace looking for a name which matches. */
6948 for (subspace_chain = space_chain->sd_subspaces;
6949 subspace_chain;
6950 subspace_chain = subspace_chain->ssd_next)
6951 if (strcmp (SUBSPACE_NAME (subspace_chain), name) == 0)
6952 return subspace_chain;
6953 }
6954
6955 /* Subspace wasn't found. Return NULL. */
6956 return NULL;
6957 }
6958
6959 /* Find and return the subspace associated with the given seg. If no
6960 mapping from the given seg to a subspace is found, then return NULL.
6961
6962 If we ever put each procedure/function within its own subspace
6963 (to make life easier on the compiler and linker), then this will have
6964 to become more efficient. */
6965
6966 static ssd_chain_struct *
6967 pa_subsegment_to_subspace (seg, subseg)
6968 asection *seg;
6969 subsegT subseg;
6970 {
6971 sd_chain_struct *space_chain;
6972 ssd_chain_struct *subspace_chain;
6973
6974 /* Walk through each space. */
6975 for (space_chain = space_dict_root;
6976 space_chain;
6977 space_chain = space_chain->sd_next)
6978 {
6979 if (space_chain->sd_seg == seg)
6980 {
6981 /* Walk through each subspace within each space looking for
6982 the correct mapping. */
6983 for (subspace_chain = space_chain->sd_subspaces;
6984 subspace_chain;
6985 subspace_chain = subspace_chain->ssd_next)
6986 if (subspace_chain->ssd_subseg == (int) subseg)
6987 return subspace_chain;
6988 }
6989 }
6990
6991 /* No mapping from subsegment to subspace found. Return NULL. */
6992 return NULL;
6993 }
6994
6995 /* Given a number, try and find a space with the name number.
6996
6997 Return a pointer to a space dictionary chain entry for the space
6998 that was found or NULL on failure. */
6999
7000 static sd_chain_struct *
7001 pa_find_space_by_number (number)
7002 int number;
7003 {
7004 sd_chain_struct *space_chain;
7005
7006 for (space_chain = space_dict_root;
7007 space_chain;
7008 space_chain = space_chain->sd_next)
7009 {
7010 if (SPACE_SPNUM (space_chain) == (unsigned int) number)
7011 return space_chain;
7012 }
7013
7014 /* No appropriate space found. Return NULL. */
7015 return NULL;
7016 }
7017
7018 /* Return the starting address for the given subspace. If the starting
7019 address is unknown then return zero. */
7020
7021 static unsigned int
7022 pa_subspace_start (space, quadrant)
7023 sd_chain_struct *space;
7024 int quadrant;
7025 {
7026 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
7027 is not correct for the PA OSF1 port. */
7028 if ((strcmp (SPACE_NAME (space), "$PRIVATE$") == 0) && quadrant == 1)
7029 return 0x40000000;
7030 else if (space->sd_seg == data_section && quadrant == 1)
7031 return 0x40000000;
7032 else
7033 return 0;
7034 return 0;
7035 }
7036
7037 /* FIXME. Needs documentation. */
7038 static int
7039 pa_next_subseg (space)
7040 sd_chain_struct *space;
7041 {
7042
7043 space->sd_last_subseg++;
7044 return space->sd_last_subseg;
7045 }
7046 #endif
7047
7048 /* Helper function for pa_stringer. Used to find the end of
7049 a string. */
7050
7051 static unsigned int
7052 pa_stringer_aux (s)
7053 char *s;
7054 {
7055 unsigned int c = *s & CHAR_MASK;
7056
7057 #ifdef OBJ_SOM
7058 /* We must have a valid space and subspace. */
7059 pa_check_current_space_and_subspace ();
7060 #endif
7061
7062 switch (c)
7063 {
7064 case '\"':
7065 c = NOT_A_CHAR;
7066 break;
7067 default:
7068 break;
7069 }
7070 return c;
7071 }
7072
7073 /* Handle a .STRING type pseudo-op. */
7074
7075 static void
7076 pa_stringer (append_zero)
7077 int append_zero;
7078 {
7079 char *s, num_buf[4];
7080 unsigned int c;
7081 int i;
7082
7083 /* Preprocess the string to handle PA-specific escape sequences.
7084 For example, \xDD where DD is a hexidecimal number should be
7085 changed to \OOO where OOO is an octal number. */
7086
7087 /* Skip the opening quote. */
7088 s = input_line_pointer + 1;
7089
7090 while (is_a_char (c = pa_stringer_aux (s++)))
7091 {
7092 if (c == '\\')
7093 {
7094 c = *s;
7095 switch (c)
7096 {
7097 /* Handle \x<num>. */
7098 case 'x':
7099 {
7100 unsigned int number;
7101 int num_digit;
7102 char dg;
7103 char *s_start = s;
7104
7105 /* Get pas the 'x'. */
7106 s++;
7107 for (num_digit = 0, number = 0, dg = *s;
7108 num_digit < 2
7109 && (isdigit (dg) || (dg >= 'a' && dg <= 'f')
7110 || (dg >= 'A' && dg <= 'F'));
7111 num_digit++)
7112 {
7113 if (isdigit (dg))
7114 number = number * 16 + dg - '0';
7115 else if (dg >= 'a' && dg <= 'f')
7116 number = number * 16 + dg - 'a' + 10;
7117 else
7118 number = number * 16 + dg - 'A' + 10;
7119
7120 s++;
7121 dg = *s;
7122 }
7123 if (num_digit > 0)
7124 {
7125 switch (num_digit)
7126 {
7127 case 1:
7128 sprintf (num_buf, "%02o", number);
7129 break;
7130 case 2:
7131 sprintf (num_buf, "%03o", number);
7132 break;
7133 }
7134 for (i = 0; i <= num_digit; i++)
7135 s_start[i] = num_buf[i];
7136 }
7137 break;
7138 }
7139 /* This might be a "\"", skip over the escaped char. */
7140 default:
7141 s++;
7142 break;
7143 }
7144 }
7145 }
7146 stringer (append_zero);
7147 pa_undefine_label ();
7148 }
7149
7150 /* Handle a .VERSION pseudo-op. */
7151
7152 static void
7153 pa_version (unused)
7154 int unused;
7155 {
7156 obj_version (0);
7157 pa_undefine_label ();
7158 }
7159
7160 #ifdef OBJ_SOM
7161
7162 /* Handle a .COMPILER pseudo-op. */
7163
7164 static void
7165 pa_compiler (unused)
7166 int unused;
7167 {
7168 obj_som_compiler (0);
7169 pa_undefine_label ();
7170 }
7171
7172 #endif
7173
7174 /* Handle a .COPYRIGHT pseudo-op. */
7175
7176 static void
7177 pa_copyright (unused)
7178 int unused;
7179 {
7180 obj_copyright (0);
7181 pa_undefine_label ();
7182 }
7183
7184 /* Just like a normal cons, but when finished we have to undefine
7185 the latest space label. */
7186
7187 static void
7188 pa_cons (nbytes)
7189 int nbytes;
7190 {
7191 cons (nbytes);
7192 pa_undefine_label ();
7193 }
7194
7195 /* Switch to the data space. As usual delete our label. */
7196
7197 static void
7198 pa_data (unused)
7199 int unused;
7200 {
7201 #ifdef OBJ_SOM
7202 current_space = is_defined_space ("$PRIVATE$");
7203 current_subspace
7204 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
7205 #endif
7206 s_data (0);
7207 pa_undefine_label ();
7208 }
7209
7210 /* Like float_cons, but we need to undefine our label. */
7211
7212 static void
7213 pa_float_cons (float_type)
7214 int float_type;
7215 {
7216 float_cons (float_type);
7217 pa_undefine_label ();
7218 }
7219
7220 /* Like s_fill, but delete our label when finished. */
7221
7222 static void
7223 pa_fill (unused)
7224 int unused;
7225 {
7226 #ifdef OBJ_SOM
7227 /* We must have a valid space and subspace. */
7228 pa_check_current_space_and_subspace ();
7229 #endif
7230
7231 s_fill (0);
7232 pa_undefine_label ();
7233 }
7234
7235 /* Like lcomm, but delete our label when finished. */
7236
7237 static void
7238 pa_lcomm (needs_align)
7239 int needs_align;
7240 {
7241 #ifdef OBJ_SOM
7242 /* We must have a valid space and subspace. */
7243 pa_check_current_space_and_subspace ();
7244 #endif
7245
7246 s_lcomm (needs_align);
7247 pa_undefine_label ();
7248 }
7249
7250 /* Like lsym, but delete our label when finished. */
7251
7252 static void
7253 pa_lsym (unused)
7254 int unused;
7255 {
7256 #ifdef OBJ_SOM
7257 /* We must have a valid space and subspace. */
7258 pa_check_current_space_and_subspace ();
7259 #endif
7260
7261 s_lsym (0);
7262 pa_undefine_label ();
7263 }
7264
7265 /* Switch to the text space. Like s_text, but delete our
7266 label when finished. */
7267 static void
7268 pa_text (unused)
7269 int unused;
7270 {
7271 #ifdef OBJ_SOM
7272 current_space = is_defined_space ("$TEXT$");
7273 current_subspace
7274 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
7275 #endif
7276
7277 s_text (0);
7278 pa_undefine_label ();
7279 }
7280
7281 /* On the PA relocations which involve function symbols must not be
7282 adjusted. This so that the linker can know when/how to create argument
7283 relocation stubs for indirect calls and calls to static functions.
7284
7285 "T" field selectors create DLT relative fixups for accessing
7286 globals and statics in PIC code; each DLT relative fixup creates
7287 an entry in the DLT table. The entries contain the address of
7288 the final target (eg accessing "foo" would create a DLT entry
7289 with the address of "foo").
7290
7291 Unfortunately, the HP linker doesn't take into account any addend
7292 when generating the DLT; so accessing $LIT$+8 puts the address of
7293 $LIT$ into the DLT rather than the address of $LIT$+8.
7294
7295 The end result is we can't perform relocation symbol reductions for
7296 any fixup which creates entries in the DLT (eg they use "T" field
7297 selectors).
7298
7299 Reject reductions involving symbols with external scope; such
7300 reductions make life a living hell for object file editors.
7301
7302 FIXME. Also reject R_HPPA relocations which are 32bits wide in
7303 the code space. The SOM BFD backend doesn't know how to pull the
7304 right bits out of an instruction. */
7305
7306 int
7307 hppa_fix_adjustable (fixp)
7308 fixS *fixp;
7309 {
7310 struct hppa_fix_struct *hppa_fix;
7311
7312 hppa_fix = (struct hppa_fix_struct *) fixp->tc_fix_data;
7313
7314 #ifdef OBJ_SOM
7315 /* Reject reductions of symbols in 32bit relocs. */
7316 if (fixp->fx_r_type == R_HPPA && hppa_fix->fx_r_format == 32)
7317 return 0;
7318
7319 /* Reject reductions of symbols in sym1-sym2 expressions when
7320 the fixup will occur in a CODE subspace.
7321
7322 XXX FIXME: Long term we probably want to reject all of these;
7323 for example reducing in the debug section would lose if we ever
7324 supported using the optimizing hp linker. */
7325 if (fixp->fx_addsy
7326 && fixp->fx_subsy
7327 && (hppa_fix->segment->flags & SEC_CODE))
7328 {
7329 /* Apparently sy_used_in_reloc never gets set for sub symbols. */
7330 symbol_mark_used_in_reloc (fixp->fx_subsy);
7331 return 0;
7332 }
7333
7334 /* We can't adjust any relocs that use LR% and RR% field selectors.
7335 That confuses the HP linker. */
7336 if (hppa_fix->fx_r_field == e_lrsel
7337 || hppa_fix->fx_r_field == e_rrsel
7338 || hppa_fix->fx_r_field == e_nlrsel)
7339 return 0;
7340 #endif
7341
7342 /* Reject reductions of symbols in DLT relative relocs,
7343 relocations with plabels. */
7344 if (hppa_fix->fx_r_field == e_tsel
7345 || hppa_fix->fx_r_field == e_ltsel
7346 || hppa_fix->fx_r_field == e_rtsel
7347 || hppa_fix->fx_r_field == e_psel
7348 || hppa_fix->fx_r_field == e_rpsel
7349 || hppa_fix->fx_r_field == e_lpsel)
7350 return 0;
7351
7352 if (fixp->fx_addsy && S_IS_EXTERNAL (fixp->fx_addsy))
7353 return 0;
7354
7355 /* Reject absolute calls (jumps). */
7356 if (hppa_fix->fx_r_type == R_HPPA_ABS_CALL)
7357 return 0;
7358
7359 /* Reject reductions of function symbols. */
7360 if (fixp->fx_addsy == 0 || ! S_IS_FUNCTION (fixp->fx_addsy))
7361 return 1;
7362
7363 return 0;
7364 }
7365
7366 /* Return nonzero if the fixup in FIXP will require a relocation,
7367 even it if appears that the fixup could be completely handled
7368 within GAS. */
7369
7370 int
7371 hppa_force_relocation (fixp)
7372 fixS *fixp;
7373 {
7374 struct hppa_fix_struct *hppa_fixp;
7375 int distance;
7376
7377 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
7378 #ifdef OBJ_SOM
7379 if (fixp->fx_r_type == R_HPPA_ENTRY || fixp->fx_r_type == R_HPPA_EXIT
7380 || fixp->fx_r_type == R_HPPA_BEGIN_BRTAB
7381 || fixp->fx_r_type == R_HPPA_END_BRTAB
7382 || fixp->fx_r_type == R_HPPA_BEGIN_TRY
7383 || fixp->fx_r_type == R_HPPA_END_TRY
7384 || (fixp->fx_addsy != NULL && fixp->fx_subsy != NULL
7385 && (hppa_fixp->segment->flags & SEC_CODE) != 0))
7386 return 1;
7387 #endif
7388
7389 #define arg_reloc_stub_needed(CALLER, CALLEE) \
7390 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
7391
7392 #ifdef OBJ_SOM
7393 /* It is necessary to force PC-relative calls/jumps to have a relocation
7394 entry if they're going to need either a argument relocation or long
7395 call stub. FIXME. Can't we need the same for absolute calls? */
7396 if (fixp->fx_pcrel && fixp->fx_addsy
7397 && (arg_reloc_stub_needed ((long) ((obj_symbol_type *)
7398 symbol_get_bfdsym (fixp->fx_addsy))->tc_data.ap.hppa_arg_reloc,
7399 hppa_fixp->fx_arg_reloc)))
7400 return 1;
7401 #endif
7402 distance = (fixp->fx_offset + S_GET_VALUE (fixp->fx_addsy)
7403 - md_pcrel_from (fixp));
7404 /* Now check and see if we're going to need a long-branch stub. */
7405 if (fixp->fx_r_type == R_HPPA_PCREL_CALL
7406 && (distance > 262143 || distance < -262144))
7407 return 1;
7408
7409 if (fixp->fx_r_type == R_HPPA_ABS_CALL)
7410 return 1;
7411 #undef arg_reloc_stub_needed
7412
7413 /* No need (yet) to force another relocations to be emitted. */
7414 return 0;
7415 }
7416
7417 /* Now for some ELF specific code. FIXME. */
7418 #ifdef OBJ_ELF
7419 /* Mark the end of a function so that it's possible to compute
7420 the size of the function in hppa_elf_final_processing. */
7421
7422 static void
7423 hppa_elf_mark_end_of_function ()
7424 {
7425 /* ELF does not have EXIT relocations. All we do is create a
7426 temporary symbol marking the end of the function. */
7427 char *name = (char *)
7428 xmalloc (strlen ("L$\001end_") +
7429 strlen (S_GET_NAME (last_call_info->start_symbol)) + 1);
7430
7431 if (name)
7432 {
7433 symbolS *symbolP;
7434
7435 strcpy (name, "L$\001end_");
7436 strcat (name, S_GET_NAME (last_call_info->start_symbol));
7437
7438 /* If we have a .exit followed by a .procend, then the
7439 symbol will have already been defined. */
7440 symbolP = symbol_find (name);
7441 if (symbolP)
7442 {
7443 /* The symbol has already been defined! This can
7444 happen if we have a .exit followed by a .procend.
7445
7446 This is *not* an error. All we want to do is free
7447 the memory we just allocated for the name and continue. */
7448 xfree (name);
7449 }
7450 else
7451 {
7452 /* symbol value should be the offset of the
7453 last instruction of the function */
7454 symbolP = symbol_new (name, now_seg, (valueT) (frag_now_fix () - 4),
7455 frag_now);
7456
7457 assert (symbolP);
7458 S_CLEAR_EXTERNAL (symbolP);
7459 symbol_table_insert (symbolP);
7460 }
7461
7462 if (symbolP)
7463 last_call_info->end_symbol = symbolP;
7464 else
7465 as_bad (_("Symbol '%s' could not be created."), name);
7466
7467 }
7468 else
7469 as_bad (_("No memory for symbol name."));
7470
7471 }
7472
7473 /* For ELF, this function serves one purpose: to setup the st_size
7474 field of STT_FUNC symbols. To do this, we need to scan the
7475 call_info structure list, determining st_size in by taking the
7476 difference in the address of the beginning/end marker symbols. */
7477
7478 void
7479 elf_hppa_final_processing ()
7480 {
7481 struct call_info *call_info_pointer;
7482
7483 for (call_info_pointer = call_info_root;
7484 call_info_pointer;
7485 call_info_pointer = call_info_pointer->ci_next)
7486 {
7487 elf_symbol_type *esym
7488 = ((elf_symbol_type *)
7489 symbol_get_bfdsym (call_info_pointer->start_symbol));
7490 esym->internal_elf_sym.st_size =
7491 S_GET_VALUE (call_info_pointer->end_symbol)
7492 - S_GET_VALUE (call_info_pointer->start_symbol) + 4;
7493 }
7494 }
7495 #endif
GDB Binutils - Deliverables
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