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* config/tc-hppa.c (md_assemble): Fix dwarf2 line handling.
[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 /* If we are using ELF, then we probably can support dwarf2 debug
43 records. Furthermore, if we are supporting dwarf2 debug records,
44 then we want to use the assembler support for compact line numbers. */
45 #ifdef OBJ_ELF
46 #include "dwarf2dbg.h"
47 struct dwarf2_line_info debug_line;
48 #endif
49
50 /* A "convient" place to put object file dependencies which do
51 not need to be seen outside of tc-hppa.c. */
52 #ifdef OBJ_ELF
53 /* Object file formats specify relocation types. */
54 typedef elf_hppa_reloc_type reloc_type;
55
56 /* Object file formats specify BFD symbol types. */
57 typedef elf_symbol_type obj_symbol_type;
58
59 #ifdef BFD64
60 /* How to generate a relocation. */
61 #define hppa_gen_reloc_type _bfd_elf64_hppa_gen_reloc_type
62 #else
63 #define hppa_gen_reloc_type _bfd_elf32_hppa_gen_reloc_type
64 #endif
65
66 /* ELF objects can have versions, but apparently do not have anywhere
67 to store a copyright string. */
68 #define obj_version obj_elf_version
69 #define obj_copyright obj_elf_version
70
71 #define UNWIND_SECTION_NAME ".PARISC.unwind"
72 #endif
73
74 #ifdef OBJ_SOM
75 /* Names of various debugging spaces/subspaces. */
76 #define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
77 #define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
78 #define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
79 #define UNWIND_SECTION_NAME "$UNWIND$"
80
81 /* Object file formats specify relocation types. */
82 typedef int reloc_type;
83
84 /* SOM objects can have both a version string and a copyright string. */
85 #define obj_version obj_som_version
86 #define obj_copyright obj_som_copyright
87
88 /* How to generate a relocation. */
89 #define hppa_gen_reloc_type hppa_som_gen_reloc_type
90
91 /* Object file formats specify BFD symbol types. */
92 typedef som_symbol_type obj_symbol_type;
93
94 /* This apparently isn't in older versions of hpux reloc.h. */
95 #ifndef R_DLT_REL
96 #define R_DLT_REL 0x78
97 #endif
98 #endif
99
100 #ifndef R_N0SEL
101 #define R_N0SEL 0xd8
102 #endif
103
104 #ifndef R_N1SEL
105 #define R_N1SEL 0xd9
106 #endif
107
108 /* Various structures and types used internally in tc-hppa.c. */
109
110 /* Unwind table and descriptor. FIXME: Sync this with GDB version. */
111
112 struct unwind_desc
113 {
114 unsigned int cannot_unwind:1;
115 unsigned int millicode:1;
116 unsigned int millicode_save_rest:1;
117 unsigned int region_desc:2;
118 unsigned int save_sr:2;
119 unsigned int entry_fr:4;
120 unsigned int entry_gr:5;
121 unsigned int args_stored:1;
122 unsigned int call_fr:5;
123 unsigned int call_gr:5;
124 unsigned int save_sp:1;
125 unsigned int save_rp:1;
126 unsigned int save_rp_in_frame:1;
127 unsigned int extn_ptr_defined:1;
128 unsigned int cleanup_defined:1;
129
130 unsigned int hpe_interrupt_marker:1;
131 unsigned int hpux_interrupt_marker:1;
132 unsigned int reserved:3;
133 unsigned int frame_size:27;
134 };
135
136 struct unwind_table
137 {
138 /* Starting and ending offsets of the region described by
139 descriptor. */
140 unsigned int start_offset;
141 unsigned int end_offset;
142 struct unwind_desc descriptor;
143 };
144
145 /* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
146 control the entry and exit code they generate. It is also used in
147 creation of the correct stack unwind descriptors.
148
149 NOTE: GAS does not support .enter and .leave for the generation of
150 prologues and epilogues. FIXME.
151
152 The fields in structure roughly correspond to the arguments available on the
153 .callinfo pseudo-op. */
154
155 struct call_info
156 {
157 /* The unwind descriptor being built. */
158 struct unwind_table ci_unwind;
159
160 /* Name of this function. */
161 symbolS *start_symbol;
162
163 /* (temporary) symbol used to mark the end of this function. */
164 symbolS *end_symbol;
165
166 /* Next entry in the chain. */
167 struct call_info *ci_next;
168 };
169
170 /* Operand formats for FP instructions. Note not all FP instructions
171 allow all four formats to be used (for example fmpysub only allows
172 SGL and DBL). */
173 typedef enum
174 {
175 SGL, DBL, ILLEGAL_FMT, QUAD, W, UW, DW, UDW, QW, UQW
176 }
177 fp_operand_format;
178
179 /* This fully describes the symbol types which may be attached to
180 an EXPORT or IMPORT directive. Only SOM uses this formation
181 (ELF has no need for it). */
182 typedef enum
183 {
184 SYMBOL_TYPE_UNKNOWN,
185 SYMBOL_TYPE_ABSOLUTE,
186 SYMBOL_TYPE_CODE,
187 SYMBOL_TYPE_DATA,
188 SYMBOL_TYPE_ENTRY,
189 SYMBOL_TYPE_MILLICODE,
190 SYMBOL_TYPE_PLABEL,
191 SYMBOL_TYPE_PRI_PROG,
192 SYMBOL_TYPE_SEC_PROG,
193 }
194 pa_symbol_type;
195
196 /* This structure contains information needed to assemble
197 individual instructions. */
198 struct pa_it
199 {
200 /* Holds the opcode after parsing by pa_ip. */
201 unsigned long opcode;
202
203 /* Holds an expression associated with the current instruction. */
204 expressionS exp;
205
206 /* Does this instruction use PC-relative addressing. */
207 int pcrel;
208
209 /* Floating point formats for operand1 and operand2. */
210 fp_operand_format fpof1;
211 fp_operand_format fpof2;
212
213
214 /* Holds the field selector for this instruction
215 (for example L%, LR%, etc). */
216 long field_selector;
217
218 /* Holds any argument relocation bits associated with this
219 instruction. (instruction should be some sort of call). */
220 long arg_reloc;
221
222 /* The format specification for this instruction. */
223 int format;
224
225 /* The relocation (if any) associated with this instruction. */
226 reloc_type reloc;
227 };
228
229 /* PA-89 floating point registers are arranged like this:
230
231
232 +--------------+--------------+
233 | 0 or 16L | 16 or 16R |
234 +--------------+--------------+
235 | 1 or 17L | 17 or 17R |
236 +--------------+--------------+
237 | | |
238
239 . . .
240 . . .
241 . . .
242
243 | | |
244 +--------------+--------------+
245 | 14 or 30L | 30 or 30R |
246 +--------------+--------------+
247 | 15 or 31L | 31 or 31R |
248 +--------------+--------------+
249
250
251 The following is a version of pa_parse_number that
252 handles the L/R notation and returns the correct
253 value to put into the instruction register field.
254 The correct value to put into the instruction is
255 encoded in the structure 'pa_11_fp_reg_struct'. */
256
257 struct pa_11_fp_reg_struct
258 {
259 /* The register number. */
260 char number_part;
261
262 /* L/R selector. */
263 char l_r_select;
264 };
265
266 /* Additional information needed to build argument relocation stubs. */
267 struct call_desc
268 {
269 /* The argument relocation specification. */
270 unsigned int arg_reloc;
271
272 /* Number of arguments. */
273 unsigned int arg_count;
274 };
275
276 #ifdef OBJ_SOM
277 /* This structure defines an entry in the subspace dictionary
278 chain. */
279
280 struct subspace_dictionary_chain
281 {
282 /* Nonzero if this space has been defined by the user code. */
283 unsigned int ssd_defined;
284
285 /* Name of this subspace. */
286 char *ssd_name;
287
288 /* GAS segment and subsegment associated with this subspace. */
289 asection *ssd_seg;
290 int ssd_subseg;
291
292 /* Next space in the subspace dictionary chain. */
293 struct subspace_dictionary_chain *ssd_next;
294 };
295
296 typedef struct subspace_dictionary_chain ssd_chain_struct;
297
298 /* This structure defines an entry in the subspace dictionary
299 chain. */
300
301 struct space_dictionary_chain
302 {
303 /* Nonzero if this space has been defined by the user code or
304 as a default space. */
305 unsigned int sd_defined;
306
307 /* Nonzero if this spaces has been defined by the user code. */
308 unsigned int sd_user_defined;
309
310 /* The space number (or index). */
311 unsigned int sd_spnum;
312
313 /* The name of this subspace. */
314 char *sd_name;
315
316 /* GAS segment to which this subspace corresponds. */
317 asection *sd_seg;
318
319 /* Current subsegment number being used. */
320 int sd_last_subseg;
321
322 /* The chain of subspaces contained within this space. */
323 ssd_chain_struct *sd_subspaces;
324
325 /* The next entry in the space dictionary chain. */
326 struct space_dictionary_chain *sd_next;
327 };
328
329 typedef struct space_dictionary_chain sd_chain_struct;
330
331 /* This structure defines attributes of the default subspace
332 dictionary entries. */
333
334 struct default_subspace_dict
335 {
336 /* Name of the subspace. */
337 char *name;
338
339 /* FIXME. Is this still needed? */
340 char defined;
341
342 /* Nonzero if this subspace is loadable. */
343 char loadable;
344
345 /* Nonzero if this subspace contains only code. */
346 char code_only;
347
348 /* Nonzero if this is a common subspace. */
349 char common;
350
351 /* Nonzero if this is a common subspace which allows symbols
352 to be multiply defined. */
353 char dup_common;
354
355 /* Nonzero if this subspace should be zero filled. */
356 char zero;
357
358 /* Sort key for this subspace. */
359 unsigned char sort;
360
361 /* Access control bits for this subspace. Can represent RWX access
362 as well as privilege level changes for gateways. */
363 int access;
364
365 /* Index of containing space. */
366 int space_index;
367
368 /* Alignment (in bytes) of this subspace. */
369 int alignment;
370
371 /* Quadrant within space where this subspace should be loaded. */
372 int quadrant;
373
374 /* An index into the default spaces array. */
375 int def_space_index;
376
377 /* Subsegment associated with this subspace. */
378 subsegT subsegment;
379 };
380
381 /* This structure defines attributes of the default space
382 dictionary entries. */
383
384 struct default_space_dict
385 {
386 /* Name of the space. */
387 char *name;
388
389 /* Space number. It is possible to identify spaces within
390 assembly code numerically! */
391 int spnum;
392
393 /* Nonzero if this space is loadable. */
394 char loadable;
395
396 /* Nonzero if this space is "defined". FIXME is still needed */
397 char defined;
398
399 /* Nonzero if this space can not be shared. */
400 char private;
401
402 /* Sort key for this space. */
403 unsigned char sort;
404
405 /* Segment associated with this space. */
406 asection *segment;
407 };
408 #endif
409
410 /* Structure for previous label tracking. Needed so that alignments,
411 callinfo declarations, etc can be easily attached to a particular
412 label. */
413 typedef struct label_symbol_struct
414 {
415 struct symbol *lss_label;
416 #ifdef OBJ_SOM
417 sd_chain_struct *lss_space;
418 #endif
419 #ifdef OBJ_ELF
420 segT lss_segment;
421 #endif
422 struct label_symbol_struct *lss_next;
423 }
424 label_symbol_struct;
425
426 /* Extra information needed to perform fixups (relocations) on the PA. */
427 struct hppa_fix_struct
428 {
429 /* The field selector. */
430 enum hppa_reloc_field_selector_type_alt fx_r_field;
431
432 /* Type of fixup. */
433 int fx_r_type;
434
435 /* Format of fixup. */
436 int fx_r_format;
437
438 /* Argument relocation bits. */
439 long fx_arg_reloc;
440
441 /* The segment this fixup appears in. */
442 segT segment;
443 };
444
445 /* Structure to hold information about predefined registers. */
446
447 struct pd_reg
448 {
449 char *name;
450 int value;
451 };
452
453 /* This structure defines the mapping from a FP condition string
454 to a condition number which can be recorded in an instruction. */
455 struct fp_cond_map
456 {
457 char *string;
458 int cond;
459 };
460
461 /* This structure defines a mapping from a field selector
462 string to a field selector type. */
463 struct selector_entry
464 {
465 char *prefix;
466 int field_selector;
467 };
468
469 /* Prototypes for functions local to tc-hppa.c. */
470
471 #ifdef OBJ_SOM
472 static void pa_check_current_space_and_subspace PARAMS ((void));
473 #endif
474
475 static fp_operand_format pa_parse_fp_format PARAMS ((char **s));
476 static void pa_cons PARAMS ((int));
477 static void pa_data PARAMS ((int));
478 static void pa_float_cons PARAMS ((int));
479 static void pa_fill PARAMS ((int));
480 static void pa_lcomm PARAMS ((int));
481 static void pa_lsym PARAMS ((int));
482 static void pa_stringer PARAMS ((int));
483 static void pa_text PARAMS ((int));
484 static void pa_version PARAMS ((int));
485 static int pa_parse_fp_cmp_cond PARAMS ((char **));
486 static int get_expression PARAMS ((char *));
487 static int pa_get_absolute_expression PARAMS ((struct pa_it *, char **));
488 static int evaluate_absolute PARAMS ((struct pa_it *));
489 static unsigned int pa_build_arg_reloc PARAMS ((char *));
490 static unsigned int pa_align_arg_reloc PARAMS ((unsigned int, unsigned int));
491 static int pa_parse_nullif PARAMS ((char **));
492 static int pa_parse_nonneg_cmpsub_cmpltr PARAMS ((char **, int));
493 static int pa_parse_neg_cmpsub_cmpltr PARAMS ((char **, int));
494 static int pa_parse_neg_add_cmpltr PARAMS ((char **, int));
495 static int pa_parse_nonneg_add_cmpltr PARAMS ((char **, int));
496 static void pa_block PARAMS ((int));
497 static void pa_brtab PARAMS ((int));
498 static void pa_try PARAMS ((int));
499 static void pa_call PARAMS ((int));
500 static void pa_call_args PARAMS ((struct call_desc *));
501 static void pa_callinfo PARAMS ((int));
502 static void pa_code PARAMS ((int));
503 static void pa_comm PARAMS ((int));
504 static void pa_copyright PARAMS ((int));
505 static void pa_end PARAMS ((int));
506 static void pa_enter PARAMS ((int));
507 static void pa_entry PARAMS ((int));
508 static void pa_equ PARAMS ((int));
509 static void pa_exit PARAMS ((int));
510 static void pa_export PARAMS ((int));
511 static void pa_type_args PARAMS ((symbolS *, int));
512 static void pa_import PARAMS ((int));
513 static void pa_label PARAMS ((int));
514 static void pa_leave PARAMS ((int));
515 static void pa_level PARAMS ((int));
516 static void pa_origin PARAMS ((int));
517 static void pa_proc PARAMS ((int));
518 static void pa_procend PARAMS ((int));
519 static void pa_param PARAMS ((int));
520 static void pa_undefine_label PARAMS ((void));
521 static int need_pa11_opcode PARAMS ((struct pa_it *,
522 struct pa_11_fp_reg_struct *));
523 static int pa_parse_number PARAMS ((char **, struct pa_11_fp_reg_struct *));
524 static label_symbol_struct *pa_get_label PARAMS ((void));
525 #ifdef OBJ_SOM
526 static void pa_compiler PARAMS ((int));
527 static void pa_align PARAMS ((int));
528 static void pa_space PARAMS ((int));
529 static void pa_spnum PARAMS ((int));
530 static void pa_subspace PARAMS ((int));
531 static sd_chain_struct *create_new_space PARAMS ((char *, int, int,
532 int, int, int,
533 asection *, int));
534 static ssd_chain_struct *create_new_subspace PARAMS ((sd_chain_struct *,
535 char *, int, int,
536 int, int, int,
537 int, int, int, int,
538 int, asection *));
539 static ssd_chain_struct *update_subspace PARAMS ((sd_chain_struct *,
540 char *, int, int, int,
541 int, int, int, int,
542 int, int, int,
543 asection *));
544 static sd_chain_struct *is_defined_space PARAMS ((char *));
545 static ssd_chain_struct *is_defined_subspace PARAMS ((char *));
546 static sd_chain_struct *pa_segment_to_space PARAMS ((asection *));
547 static ssd_chain_struct *pa_subsegment_to_subspace PARAMS ((asection *,
548 subsegT));
549 static sd_chain_struct *pa_find_space_by_number PARAMS ((int));
550 static unsigned int pa_subspace_start PARAMS ((sd_chain_struct *, int));
551 static sd_chain_struct *pa_parse_space_stmt PARAMS ((char *, int));
552 static int pa_next_subseg PARAMS ((sd_chain_struct *));
553 static void pa_spaces_begin PARAMS ((void));
554 #endif
555 static void pa_ip PARAMS ((char *));
556 static void fix_new_hppa PARAMS ((fragS *, int, int, symbolS *,
557 long, expressionS *, int,
558 bfd_reloc_code_real_type,
559 enum hppa_reloc_field_selector_type_alt,
560 int, long, int *));
561 static int is_end_of_statement PARAMS ((void));
562 static int reg_name_search PARAMS ((char *));
563 static int pa_chk_field_selector PARAMS ((char **));
564 static int is_same_frag PARAMS ((fragS *, fragS *));
565 static void process_exit PARAMS ((void));
566 static int log2 PARAMS ((int));
567 static unsigned int pa_stringer_aux PARAMS ((char *));
568
569 #ifdef OBJ_ELF
570 static void hppa_elf_mark_end_of_function PARAMS ((void));
571 static void pa_build_unwind_subspace PARAMS ((struct call_info *));
572 #endif
573
574 /* File and gloally scoped variable declarations. */
575
576 #ifdef OBJ_SOM
577 /* Root and final entry in the space chain. */
578 static sd_chain_struct *space_dict_root;
579 static sd_chain_struct *space_dict_last;
580
581 /* The current space and subspace. */
582 static sd_chain_struct *current_space;
583 static ssd_chain_struct *current_subspace;
584 #endif
585
586 /* Root of the call_info chain. */
587 static struct call_info *call_info_root;
588
589 /* The last call_info (for functions) structure
590 seen so it can be associated with fixups and
591 function labels. */
592 static struct call_info *last_call_info;
593
594 /* The last call description (for actual calls). */
595 static struct call_desc last_call_desc;
596
597 /* handle of the OPCODE hash table */
598 static struct hash_control *op_hash = NULL;
599
600 /* This array holds the chars that always start a comment. If the
601 pre-processor is disabled, these aren't very useful. */
602 const char comment_chars[] = ";";
603
604 /* Table of pseudo ops for the PA. FIXME -- how many of these
605 are now redundant with the overall GAS and the object file
606 dependent tables? */
607 const pseudo_typeS md_pseudo_table[] =
608 {
609 /* align pseudo-ops on the PA specify the actual alignment requested,
610 not the log2 of the requested alignment. */
611 #ifdef OBJ_SOM
612 {"align", pa_align, 8},
613 #endif
614 #ifdef OBJ_ELF
615 {"align", s_align_bytes, 8},
616 #endif
617 {"begin_brtab", pa_brtab, 1},
618 {"begin_try", pa_try, 1},
619 {"block", pa_block, 1},
620 {"blockz", pa_block, 0},
621 {"byte", pa_cons, 1},
622 {"call", pa_call, 0},
623 {"callinfo", pa_callinfo, 0},
624 {"code", pa_code, 0},
625 {"comm", pa_comm, 0},
626 #ifdef OBJ_SOM
627 {"compiler", pa_compiler, 0},
628 #endif
629 {"copyright", pa_copyright, 0},
630 {"data", pa_data, 0},
631 {"double", pa_float_cons, 'd'},
632 {"dword", pa_cons, 8},
633 {"end", pa_end, 0},
634 {"end_brtab", pa_brtab, 0},
635 {"end_try", pa_try, 0},
636 {"enter", pa_enter, 0},
637 {"entry", pa_entry, 0},
638 {"equ", pa_equ, 0},
639 {"exit", pa_exit, 0},
640 {"export", pa_export, 0},
641 #ifdef OBJ_ELF
642 { "file", dwarf2_directive_file },
643 #endif
644 {"fill", pa_fill, 0},
645 {"float", pa_float_cons, 'f'},
646 {"half", pa_cons, 2},
647 {"import", pa_import, 0},
648 {"int", pa_cons, 4},
649 {"label", pa_label, 0},
650 {"lcomm", pa_lcomm, 0},
651 {"leave", pa_leave, 0},
652 {"level", pa_level, 0},
653 #ifdef OBJ_ELF
654 { "loc", dwarf2_directive_loc },
655 #endif
656 {"long", pa_cons, 4},
657 {"lsym", pa_lsym, 0},
658 #ifdef OBJ_SOM
659 {"nsubspa", pa_subspace, 1},
660 #endif
661 {"octa", pa_cons, 16},
662 {"org", pa_origin, 0},
663 {"origin", pa_origin, 0},
664 {"param", pa_param, 0},
665 {"proc", pa_proc, 0},
666 {"procend", pa_procend, 0},
667 {"quad", pa_cons, 8},
668 {"reg", pa_equ, 1},
669 {"short", pa_cons, 2},
670 {"single", pa_float_cons, 'f'},
671 #ifdef OBJ_SOM
672 {"space", pa_space, 0},
673 {"spnum", pa_spnum, 0},
674 #endif
675 {"string", pa_stringer, 0},
676 {"stringz", pa_stringer, 1},
677 #ifdef OBJ_SOM
678 {"subspa", pa_subspace, 0},
679 #endif
680 {"text", pa_text, 0},
681 {"version", pa_version, 0},
682 {"word", pa_cons, 4},
683 {NULL, 0, 0}
684 };
685
686 /* This array holds the chars that only start a comment at the beginning of
687 a line. If the line seems to have the form '# 123 filename'
688 .line and .file directives will appear in the pre-processed output.
689
690 Note that input_file.c hand checks for '#' at the beginning of the
691 first line of the input file. This is because the compiler outputs
692 #NO_APP at the beginning of its output.
693
694 Also note that C style comments will always work. */
695 const char line_comment_chars[] = "#";
696
697 /* This array holds the characters which act as line separators. */
698 const char line_separator_chars[] = "!";
699
700 /* Chars that can be used to separate mant from exp in floating point nums. */
701 const char EXP_CHARS[] = "eE";
702
703 /* Chars that mean this number is a floating point constant.
704 As in 0f12.456 or 0d1.2345e12.
705
706 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
707 changed in read.c. Ideally it shouldn't hae to know abou it at
708 all, but nothing is ideal around here. */
709 const char FLT_CHARS[] = "rRsSfFdDxXpP";
710
711 static struct pa_it the_insn;
712
713 /* Points to the end of an expression just parsed by get_expressoin
714 and friends. FIXME. This shouldn't be handled with a file-global
715 variable. */
716 static char *expr_end;
717
718 /* Nonzero if a .callinfo appeared within the current procedure. */
719 static int callinfo_found;
720
721 /* Nonzero if the assembler is currently within a .entry/.exit pair. */
722 static int within_entry_exit;
723
724 /* Nonzero if the assembler is currently within a procedure definition. */
725 static int within_procedure;
726
727 /* Handle on strucutre which keep track of the last symbol
728 seen in each subspace. */
729 static label_symbol_struct *label_symbols_rootp = NULL;
730
731 /* Holds the last field selector. */
732 static int hppa_field_selector;
733
734 /* Nonzero when strict syntax checking is enabled. Zero otherwise.
735
736 Each opcode in the table has a flag which indicates whether or not
737 strict syntax checking should be enabled for that instruction. */
738 static int strict = 0;
739
740 #ifdef OBJ_SOM
741 /* A dummy bfd symbol so that all relocations have symbols of some kind. */
742 static symbolS *dummy_symbol;
743 #endif
744
745 /* Nonzero if errors are to be printed. */
746 static int print_errors = 1;
747
748 /* List of registers that are pre-defined:
749
750 Each general register has one predefined name of the form
751 %r<REGNUM> which has the value <REGNUM>.
752
753 Space and control registers are handled in a similar manner,
754 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
755
756 Likewise for the floating point registers, but of the form
757 %fr<REGNUM>. Floating point registers have additional predefined
758 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
759 again have the value <REGNUM>.
760
761 Many registers also have synonyms:
762
763 %r26 - %r23 have %arg0 - %arg3 as synonyms
764 %r28 - %r29 have %ret0 - %ret1 as synonyms
765 %r30 has %sp as a synonym
766 %r27 has %dp as a synonym
767 %r2 has %rp as a synonym
768
769 Almost every control register has a synonym; they are not listed
770 here for brevity.
771
772 The table is sorted. Suitable for searching by a binary search. */
773
774 static const struct pd_reg pre_defined_registers[] =
775 {
776 {"%arg0", 26},
777 {"%arg1", 25},
778 {"%arg2", 24},
779 {"%arg3", 23},
780 {"%cr0", 0},
781 {"%cr10", 10},
782 {"%cr11", 11},
783 {"%cr12", 12},
784 {"%cr13", 13},
785 {"%cr14", 14},
786 {"%cr15", 15},
787 {"%cr16", 16},
788 {"%cr17", 17},
789 {"%cr18", 18},
790 {"%cr19", 19},
791 {"%cr20", 20},
792 {"%cr21", 21},
793 {"%cr22", 22},
794 {"%cr23", 23},
795 {"%cr24", 24},
796 {"%cr25", 25},
797 {"%cr26", 26},
798 {"%cr27", 27},
799 {"%cr28", 28},
800 {"%cr29", 29},
801 {"%cr30", 30},
802 {"%cr31", 31},
803 {"%cr8", 8},
804 {"%cr9", 9},
805 {"%dp", 27},
806 {"%eiem", 15},
807 {"%eirr", 23},
808 {"%fr0", 0},
809 {"%fr0l", 0},
810 {"%fr0r", 0},
811 {"%fr1", 1},
812 {"%fr10", 10},
813 {"%fr10l", 10},
814 {"%fr10r", 10},
815 {"%fr11", 11},
816 {"%fr11l", 11},
817 {"%fr11r", 11},
818 {"%fr12", 12},
819 {"%fr12l", 12},
820 {"%fr12r", 12},
821 {"%fr13", 13},
822 {"%fr13l", 13},
823 {"%fr13r", 13},
824 {"%fr14", 14},
825 {"%fr14l", 14},
826 {"%fr14r", 14},
827 {"%fr15", 15},
828 {"%fr15l", 15},
829 {"%fr15r", 15},
830 {"%fr16", 16},
831 {"%fr16l", 16},
832 {"%fr16r", 16},
833 {"%fr17", 17},
834 {"%fr17l", 17},
835 {"%fr17r", 17},
836 {"%fr18", 18},
837 {"%fr18l", 18},
838 {"%fr18r", 18},
839 {"%fr19", 19},
840 {"%fr19l", 19},
841 {"%fr19r", 19},
842 {"%fr1l", 1},
843 {"%fr1r", 1},
844 {"%fr2", 2},
845 {"%fr20", 20},
846 {"%fr20l", 20},
847 {"%fr20r", 20},
848 {"%fr21", 21},
849 {"%fr21l", 21},
850 {"%fr21r", 21},
851 {"%fr22", 22},
852 {"%fr22l", 22},
853 {"%fr22r", 22},
854 {"%fr23", 23},
855 {"%fr23l", 23},
856 {"%fr23r", 23},
857 {"%fr24", 24},
858 {"%fr24l", 24},
859 {"%fr24r", 24},
860 {"%fr25", 25},
861 {"%fr25l", 25},
862 {"%fr25r", 25},
863 {"%fr26", 26},
864 {"%fr26l", 26},
865 {"%fr26r", 26},
866 {"%fr27", 27},
867 {"%fr27l", 27},
868 {"%fr27r", 27},
869 {"%fr28", 28},
870 {"%fr28l", 28},
871 {"%fr28r", 28},
872 {"%fr29", 29},
873 {"%fr29l", 29},
874 {"%fr29r", 29},
875 {"%fr2l", 2},
876 {"%fr2r", 2},
877 {"%fr3", 3},
878 {"%fr30", 30},
879 {"%fr30l", 30},
880 {"%fr30r", 30},
881 {"%fr31", 31},
882 {"%fr31l", 31},
883 {"%fr31r", 31},
884 {"%fr3l", 3},
885 {"%fr3r", 3},
886 {"%fr4", 4},
887 {"%fr4l", 4},
888 {"%fr4r", 4},
889 {"%fr5", 5},
890 {"%fr5l", 5},
891 {"%fr5r", 5},
892 {"%fr6", 6},
893 {"%fr6l", 6},
894 {"%fr6r", 6},
895 {"%fr7", 7},
896 {"%fr7l", 7},
897 {"%fr7r", 7},
898 {"%fr8", 8},
899 {"%fr8l", 8},
900 {"%fr8r", 8},
901 {"%fr9", 9},
902 {"%fr9l", 9},
903 {"%fr9r", 9},
904 {"%hta", 25},
905 {"%iir", 19},
906 {"%ior", 21},
907 {"%ipsw", 22},
908 {"%isr", 20},
909 {"%itmr", 16},
910 {"%iva", 14},
911 {"%pcoq", 18},
912 {"%pcsq", 17},
913 {"%pidr1", 8},
914 {"%pidr2", 9},
915 {"%pidr3", 12},
916 {"%pidr4", 13},
917 {"%ppda", 24},
918 {"%r0", 0},
919 {"%r1", 1},
920 {"%r10", 10},
921 {"%r11", 11},
922 {"%r12", 12},
923 {"%r13", 13},
924 {"%r14", 14},
925 {"%r15", 15},
926 {"%r16", 16},
927 {"%r17", 17},
928 {"%r18", 18},
929 {"%r19", 19},
930 {"%r2", 2},
931 {"%r20", 20},
932 {"%r21", 21},
933 {"%r22", 22},
934 {"%r23", 23},
935 {"%r24", 24},
936 {"%r25", 25},
937 {"%r26", 26},
938 {"%r27", 27},
939 {"%r28", 28},
940 {"%r29", 29},
941 {"%r3", 3},
942 {"%r30", 30},
943 {"%r31", 31},
944 {"%r4", 4},
945 {"%r5", 5},
946 {"%r6", 6},
947 {"%r7", 7},
948 {"%r8", 8},
949 {"%r9", 9},
950 {"%rctr", 0},
951 {"%ret0", 28},
952 {"%ret1", 29},
953 {"%rp", 2},
954 {"%sar", 11},
955 {"%sp", 30},
956 {"%sr0", 0},
957 {"%sr1", 1},
958 {"%sr2", 2},
959 {"%sr3", 3},
960 {"%sr4", 4},
961 {"%sr5", 5},
962 {"%sr6", 6},
963 {"%sr7", 7},
964 {"%tr0", 24},
965 {"%tr1", 25},
966 {"%tr2", 26},
967 {"%tr3", 27},
968 {"%tr4", 28},
969 {"%tr5", 29},
970 {"%tr6", 30},
971 {"%tr7", 31}
972 };
973
974 /* This table is sorted by order of the length of the string. This is
975 so we check for <> before we check for <. If we had a <> and checked
976 for < first, we would get a false match. */
977 static const struct fp_cond_map fp_cond_map[] =
978 {
979 {"false?", 0},
980 {"false", 1},
981 {"true?", 30},
982 {"true", 31},
983 {"!<=>", 3},
984 {"!?>=", 8},
985 {"!?<=", 16},
986 {"!<>", 7},
987 {"!>=", 11},
988 {"!?>", 12},
989 {"?<=", 14},
990 {"!<=", 19},
991 {"!?<", 20},
992 {"?>=", 22},
993 {"!?=", 24},
994 {"!=t", 27},
995 {"<=>", 29},
996 {"=t", 5},
997 {"?=", 6},
998 {"?<", 10},
999 {"<=", 13},
1000 {"!>", 15},
1001 {"?>", 18},
1002 {">=", 21},
1003 {"!<", 23},
1004 {"<>", 25},
1005 {"!=", 26},
1006 {"!?", 28},
1007 {"?", 2},
1008 {"=", 4},
1009 {"<", 9},
1010 {">", 17}
1011 };
1012
1013 static const struct selector_entry selector_table[] =
1014 {
1015 {"f", e_fsel},
1016 {"l", e_lsel},
1017 {"ld", e_ldsel},
1018 {"lp", e_lpsel},
1019 {"lr", e_lrsel},
1020 {"ls", e_lssel},
1021 {"lt", e_ltsel},
1022 {"ltp", e_ltpsel},
1023 {"n", e_nsel},
1024 {"nl", e_nlsel},
1025 {"nlr", e_nlrsel},
1026 {"p", e_psel},
1027 {"r", e_rsel},
1028 {"rd", e_rdsel},
1029 {"rp", e_rpsel},
1030 {"rr", e_rrsel},
1031 {"rs", e_rssel},
1032 {"rt", e_rtsel},
1033 {"rtp", e_rtpsel},
1034 {"t", e_tsel},
1035 };
1036
1037 #ifdef OBJ_SOM
1038 /* default space and subspace dictionaries */
1039
1040 #define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1041 #define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1042
1043 /* pre-defined subsegments (subspaces) for the HPPA. */
1044 #define SUBSEG_CODE 0
1045 #define SUBSEG_LIT 1
1046 #define SUBSEG_MILLI 2
1047 #define SUBSEG_DATA 0
1048 #define SUBSEG_BSS 2
1049 #define SUBSEG_UNWIND 3
1050 #define SUBSEG_GDB_STRINGS 0
1051 #define SUBSEG_GDB_SYMBOLS 1
1052
1053 static struct default_subspace_dict pa_def_subspaces[] =
1054 {
1055 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, SUBSEG_CODE},
1056 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, SUBSEG_DATA},
1057 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, SUBSEG_LIT},
1058 {"$MILLICODE$", 1, 1, 0, 0, 0, 0, 8, 0x2c, 0, 8, 0, 0, SUBSEG_MILLI},
1059 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, SUBSEG_BSS},
1060 {NULL, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1061 };
1062
1063 static struct default_space_dict pa_def_spaces[] =
1064 {
1065 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL},
1066 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL},
1067 {NULL, 0, 0, 0, 0, 0, ASEC_NULL}
1068 };
1069
1070 /* Misc local definitions used by the assembler. */
1071
1072 /* These macros are used to maintain spaces/subspaces. */
1073 #define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1074 #define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1075 #define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1076 #define SPACE_NAME(space_chain) (space_chain)->sd_name
1077
1078 #define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1079 #define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
1080 #endif
1081
1082 /* Return nonzero if the string pointed to by S potentially represents
1083 a right or left half of a FP register */
1084 #define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1085 #define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
1086
1087 /* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1088 main loop after insertion. */
1089
1090 #define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1091 { \
1092 ((OPCODE) |= (FIELD) << (START)); \
1093 continue; \
1094 }
1095
1096 /* Simple range checking for FIELD againt HIGH and LOW bounds.
1097 IGNORE is used to suppress the error message. */
1098
1099 #define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1100 { \
1101 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1102 { \
1103 if (! IGNORE) \
1104 as_bad (_("Field out of range [%d..%d] (%d)."), (LOW), (HIGH), \
1105 (int) (FIELD));\
1106 break; \
1107 } \
1108 }
1109
1110 #define is_DP_relative(exp) \
1111 ((exp).X_op == O_subtract \
1112 && strcmp (S_GET_NAME ((exp).X_op_symbol), "$global$") == 0)
1113
1114 #define is_PC_relative(exp) \
1115 ((exp).X_op == O_subtract \
1116 && strcmp (S_GET_NAME ((exp).X_op_symbol), "$PIC_pcrel$0") == 0)
1117
1118 /* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll
1119 always be able to reduce the expression to a constant, so we don't
1120 need real complex handling yet. */
1121 #define is_complex(exp) \
1122 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1123
1124 /* Actual functions to implement the PA specific code for the assembler. */
1125
1126 /* Called before writing the object file. Make sure entry/exit and
1127 proc/procend pairs match. */
1128
1129 void
1130 pa_check_eof ()
1131 {
1132 if (within_entry_exit)
1133 as_fatal (_("Missing .exit\n"));
1134
1135 if (within_procedure)
1136 as_fatal (_("Missing .procend\n"));
1137 }
1138
1139 /* Returns a pointer to the label_symbol_struct for the current space.
1140 or NULL if no label_symbol_struct exists for the current space. */
1141
1142 static label_symbol_struct *
1143 pa_get_label ()
1144 {
1145 label_symbol_struct *label_chain;
1146
1147 for (label_chain = label_symbols_rootp;
1148 label_chain;
1149 label_chain = label_chain->lss_next)
1150 {
1151 #ifdef OBJ_SOM
1152 if (current_space == label_chain->lss_space && label_chain->lss_label)
1153 return label_chain;
1154 #endif
1155 #ifdef OBJ_ELF
1156 if (now_seg == label_chain->lss_segment && label_chain->lss_label)
1157 return label_chain;
1158 #endif
1159 }
1160
1161 return NULL;
1162 }
1163
1164 /* Defines a label for the current space. If one is already defined,
1165 this function will replace it with the new label. */
1166
1167 void
1168 pa_define_label (symbol)
1169 symbolS *symbol;
1170 {
1171 label_symbol_struct *label_chain = pa_get_label ();
1172
1173 if (label_chain)
1174 label_chain->lss_label = symbol;
1175 else
1176 {
1177 /* Create a new label entry and add it to the head of the chain. */
1178 label_chain
1179 = (label_symbol_struct *) xmalloc (sizeof (label_symbol_struct));
1180 label_chain->lss_label = symbol;
1181 #ifdef OBJ_SOM
1182 label_chain->lss_space = current_space;
1183 #endif
1184 #ifdef OBJ_ELF
1185 label_chain->lss_segment = now_seg;
1186 #endif
1187 label_chain->lss_next = NULL;
1188
1189 if (label_symbols_rootp)
1190 label_chain->lss_next = label_symbols_rootp;
1191
1192 label_symbols_rootp = label_chain;
1193 }
1194 }
1195
1196 /* Removes a label definition for the current space.
1197 If there is no label_symbol_struct entry, then no action is taken. */
1198
1199 static void
1200 pa_undefine_label ()
1201 {
1202 label_symbol_struct *label_chain;
1203 label_symbol_struct *prev_label_chain = NULL;
1204
1205 for (label_chain = label_symbols_rootp;
1206 label_chain;
1207 label_chain = label_chain->lss_next)
1208 {
1209 if (1
1210 #ifdef OBJ_SOM
1211 && current_space == label_chain->lss_space && label_chain->lss_label
1212 #endif
1213 #ifdef OBJ_ELF
1214 && now_seg == label_chain->lss_segment && label_chain->lss_label
1215 #endif
1216 )
1217 {
1218 /* Remove the label from the chain and free its memory. */
1219 if (prev_label_chain)
1220 prev_label_chain->lss_next = label_chain->lss_next;
1221 else
1222 label_symbols_rootp = label_chain->lss_next;
1223
1224 free (label_chain);
1225 break;
1226 }
1227 prev_label_chain = label_chain;
1228 }
1229 }
1230
1231
1232 /* An HPPA-specific version of fix_new. This is required because the HPPA
1233 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1234 results in the creation of an instance of an hppa_fix_struct. An
1235 hppa_fix_struct stores the extra information along with a pointer to the
1236 original fixS. This is attached to the original fixup via the
1237 tc_fix_data field. */
1238
1239 static void
1240 fix_new_hppa (frag, where, size, add_symbol, offset, exp, pcrel,
1241 r_type, r_field, r_format, arg_reloc, unwind_bits)
1242 fragS *frag;
1243 int where;
1244 int size;
1245 symbolS *add_symbol;
1246 long offset;
1247 expressionS *exp;
1248 int pcrel;
1249 bfd_reloc_code_real_type r_type;
1250 enum hppa_reloc_field_selector_type_alt r_field;
1251 int r_format;
1252 long arg_reloc;
1253 int* unwind_bits;
1254 {
1255 fixS *new_fix;
1256
1257 struct hppa_fix_struct *hppa_fix = (struct hppa_fix_struct *)
1258 obstack_alloc (&notes, sizeof (struct hppa_fix_struct));
1259
1260 if (exp != NULL)
1261 new_fix = fix_new_exp (frag, where, size, exp, pcrel, r_type);
1262 else
1263 new_fix = fix_new (frag, where, size, add_symbol, offset, pcrel, r_type);
1264 new_fix->tc_fix_data = (void *) hppa_fix;
1265 hppa_fix->fx_r_type = r_type;
1266 hppa_fix->fx_r_field = r_field;
1267 hppa_fix->fx_r_format = r_format;
1268 hppa_fix->fx_arg_reloc = arg_reloc;
1269 hppa_fix->segment = now_seg;
1270 #ifdef OBJ_SOM
1271 if (r_type == R_ENTRY || r_type == R_EXIT)
1272 new_fix->fx_offset = *unwind_bits;
1273 #endif
1274
1275 /* foo-$global$ is used to access non-automatic storage. $global$
1276 is really just a marker and has served its purpose, so eliminate
1277 it now so as not to confuse write.c. */
1278 if (new_fix->fx_subsy
1279 && !strcmp (S_GET_NAME (new_fix->fx_subsy), "$global$"))
1280 new_fix->fx_subsy = NULL;
1281 }
1282
1283 /* Parse a .byte, .word, .long expression for the HPPA. Called by
1284 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1285
1286 void
1287 parse_cons_expression_hppa (exp)
1288 expressionS *exp;
1289 {
1290 hppa_field_selector = pa_chk_field_selector (&input_line_pointer);
1291 expression (exp);
1292 }
1293
1294 /* This fix_new is called by cons via TC_CONS_FIX_NEW.
1295 hppa_field_selector is set by the parse_cons_expression_hppa. */
1296
1297 void
1298 cons_fix_new_hppa (frag, where, size, exp)
1299 fragS *frag;
1300 int where;
1301 int size;
1302 expressionS *exp;
1303 {
1304 unsigned int rel_type;
1305
1306 /* Get a base relocation type. */
1307 if (is_DP_relative (*exp))
1308 rel_type = R_HPPA_GOTOFF;
1309 else if (is_complex (*exp))
1310 rel_type = R_HPPA_COMPLEX;
1311 else
1312 rel_type = R_HPPA;
1313
1314 if (hppa_field_selector != e_psel && hppa_field_selector != e_fsel)
1315 as_warn (_("Invalid field selector. Assuming F%%."));
1316
1317 fix_new_hppa (frag, where, size,
1318 (symbolS *) NULL, (offsetT) 0, exp, 0, rel_type,
1319 hppa_field_selector, size * 8, 0, NULL);
1320
1321 /* Reset field selector to its default state. */
1322 hppa_field_selector = 0;
1323 }
1324
1325 /* This function is called once, at assembler startup time. It should
1326 set up all the tables, etc. that the MD part of the assembler will need. */
1327
1328 void
1329 md_begin ()
1330 {
1331 const char *retval = NULL;
1332 int lose = 0;
1333 unsigned int i = 0;
1334
1335 last_call_info = NULL;
1336 call_info_root = NULL;
1337
1338 /* Set the default machine type. */
1339 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10))
1340 as_warn (_("could not set architecture and machine"));
1341
1342 /* Folding of text and data segments fails miserably on the PA.
1343 Warn user and disable "-R" option. */
1344 if (flag_readonly_data_in_text)
1345 {
1346 as_warn (_("-R option not supported on this target."));
1347 flag_readonly_data_in_text = 0;
1348 }
1349
1350 #ifdef OBJ_SOM
1351 pa_spaces_begin ();
1352 #endif
1353
1354 op_hash = hash_new ();
1355
1356 while (i < NUMOPCODES)
1357 {
1358 const char *name = pa_opcodes[i].name;
1359 retval = hash_insert (op_hash, name, (struct pa_opcode *) &pa_opcodes[i]);
1360 if (retval != NULL && *retval != '\0')
1361 {
1362 as_fatal (_("Internal error: can't hash `%s': %s\n"), name, retval);
1363 lose = 1;
1364 }
1365 do
1366 {
1367 if ((pa_opcodes[i].match & pa_opcodes[i].mask)
1368 != pa_opcodes[i].match)
1369 {
1370 fprintf (stderr, _("internal error: losing opcode: `%s' \"%s\"\n"),
1371 pa_opcodes[i].name, pa_opcodes[i].args);
1372 lose = 1;
1373 }
1374 ++i;
1375 }
1376 while (i < NUMOPCODES && !strcmp (pa_opcodes[i].name, name));
1377 }
1378
1379 if (lose)
1380 as_fatal (_("Broken assembler. No assembly attempted."));
1381
1382 #ifdef OBJ_SOM
1383 /* SOM will change text_section. To make sure we never put
1384 anything into the old one switch to the new one now. */
1385 subseg_set (text_section, 0);
1386 #endif
1387
1388 #ifdef OBJ_SOM
1389 dummy_symbol = symbol_find_or_make ("L$dummy");
1390 S_SET_SEGMENT (dummy_symbol, text_section);
1391 /* Force the symbol to be converted to a real symbol. */
1392 (void) symbol_get_bfdsym (dummy_symbol);
1393 #endif
1394 }
1395
1396 /* Assemble a single instruction storing it into a frag. */
1397 void
1398 md_assemble (str)
1399 char *str;
1400 {
1401 char *to;
1402
1403 /* The had better be something to assemble. */
1404 assert (str);
1405
1406 /* If we are within a procedure definition, make sure we've
1407 defined a label for the procedure; handle case where the
1408 label was defined after the .PROC directive.
1409
1410 Note there's not need to diddle with the segment or fragment
1411 for the label symbol in this case. We have already switched
1412 into the new $CODE$ subspace at this point. */
1413 if (within_procedure && last_call_info->start_symbol == NULL)
1414 {
1415 label_symbol_struct *label_symbol = pa_get_label ();
1416
1417 if (label_symbol)
1418 {
1419 if (label_symbol->lss_label)
1420 {
1421 last_call_info->start_symbol = label_symbol->lss_label;
1422 symbol_get_bfdsym (label_symbol->lss_label)->flags
1423 |= BSF_FUNCTION;
1424 #ifdef OBJ_SOM
1425 /* Also handle allocation of a fixup to hold the unwind
1426 information when the label appears after the proc/procend. */
1427 if (within_entry_exit)
1428 {
1429 char *where = frag_more (0);
1430
1431 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
1432 NULL, (offsetT) 0, NULL,
1433 0, R_HPPA_ENTRY, e_fsel, 0, 0,
1434 (int *)&last_call_info->ci_unwind.descriptor);
1435 }
1436 #endif
1437 }
1438 else
1439 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
1440 }
1441 else
1442 as_bad (_("Missing function name for .PROC"));
1443 }
1444
1445 /* Assemble the instruction. Results are saved into "the_insn". */
1446 pa_ip (str);
1447
1448 /* Get somewhere to put the assembled instrution. */
1449 to = frag_more (4);
1450
1451 /* Output the opcode. */
1452 md_number_to_chars (to, the_insn.opcode, 4);
1453
1454 /* If necessary output more stuff. */
1455 if (the_insn.reloc != R_HPPA_NONE)
1456 fix_new_hppa (frag_now, (to - frag_now->fr_literal), 4, NULL,
1457 (offsetT) 0, &the_insn.exp, the_insn.pcrel,
1458 the_insn.reloc, the_insn.field_selector,
1459 the_insn.format, the_insn.arg_reloc, NULL);
1460
1461 #ifdef OBJ_ELF
1462 if (debug_type == DEBUG_DWARF2)
1463 {
1464 bfd_vma addr;
1465
1466 /* First update the notion of the current source line. */
1467 dwarf2_where (&debug_line);
1468
1469 /* We want the offset of the start of this instruction within the
1470 the current frag. */
1471 addr = frag_now->fr_address + frag_now_fix () - 4;
1472
1473 /* And record the information. */
1474 dwarf2_gen_line_info (addr, &debug_line);
1475 }
1476 #endif
1477 }
1478
1479 /* Do the real work for assembling a single instruction. Store results
1480 into the global "the_insn" variable. */
1481
1482 static void
1483 pa_ip (str)
1484 char *str;
1485 {
1486 char *error_message = "";
1487 char *s, c, *argstart, *name, *save_s;
1488 const char *args;
1489 int match = FALSE;
1490 int comma = 0;
1491 int cmpltr, nullif, flag, cond, num;
1492 unsigned long opcode;
1493 struct pa_opcode *insn;
1494
1495 #ifdef OBJ_SOM
1496 /* We must have a valid space and subspace. */
1497 pa_check_current_space_and_subspace ();
1498 #endif
1499
1500 /* Convert everything up to the first whitespace character into lower
1501 case. */
1502 for (s = str; *s != ' ' && *s != '\t' && *s != '\n' && *s != '\0'; s++)
1503 if (isupper (*s))
1504 *s = tolower (*s);
1505
1506 /* Skip to something interesting. */
1507 for (s = str; isupper (*s) || islower (*s) || (*s >= '0' && *s <= '3'); ++s)
1508 ;
1509
1510 switch (*s)
1511 {
1512
1513 case '\0':
1514 break;
1515
1516 case ',':
1517 comma = 1;
1518
1519 /*FALLTHROUGH */
1520
1521 case ' ':
1522 *s++ = '\0';
1523 break;
1524
1525 default:
1526 as_fatal (_("Unknown opcode: `%s'"), str);
1527 }
1528
1529 save_s = str;
1530
1531 /* Look up the opcode in the has table. */
1532 if ((insn = (struct pa_opcode *) hash_find (op_hash, str)) == NULL)
1533 {
1534 as_bad ("Unknown opcode: `%s'", str);
1535 return;
1536 }
1537
1538 if (comma)
1539 {
1540 *--s = ',';
1541 }
1542
1543 /* Mark the location where arguments for the instruction start, then
1544 start processing them. */
1545 argstart = s;
1546 for (;;)
1547 {
1548 /* Do some initialization. */
1549 opcode = insn->match;
1550 strict = (insn->flags & FLAG_STRICT);
1551 memset (&the_insn, 0, sizeof (the_insn));
1552
1553 the_insn.reloc = R_HPPA_NONE;
1554
1555 /* If this instruction is specific to a particular architecture,
1556 then set a new architecture. */
1557 /* But do not automatically promote to pa2.0. The automatic promotion
1558 crud is for compatability with HP's old assemblers only. */
1559 if (insn->arch < 20
1560 && bfd_get_mach (stdoutput) < insn->arch)
1561 {
1562 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, insn->arch))
1563 as_warn (_("could not update architecture and machine"));
1564 }
1565 else if (bfd_get_mach (stdoutput) < insn->arch)
1566 {
1567 match = FALSE;
1568 goto failed;
1569 }
1570
1571 /* Build the opcode, checking as we go to make
1572 sure that the operands match. */
1573 for (args = insn->args;; ++args)
1574 {
1575 /* Absorb white space in instruction. */
1576 while (*s == ' ' || *s == '\t')
1577 s++;
1578
1579 switch (*args)
1580 {
1581
1582 /* End of arguments. */
1583 case '\0':
1584 if (*s == '\0')
1585 match = TRUE;
1586 break;
1587
1588 case '+':
1589 if (*s == '+')
1590 {
1591 ++s;
1592 continue;
1593 }
1594 if (*s == '-')
1595 continue;
1596 break;
1597
1598 /* These must match exactly. */
1599 case '(':
1600 case ')':
1601 case ',':
1602 case ' ':
1603 if (*s++ == *args)
1604 continue;
1605 break;
1606
1607 /* Handle a 5 bit register or control register field at 10. */
1608 case 'b':
1609 case '^':
1610 /* This should be more strict. Small steps. */
1611 if (strict && *s != '%')
1612 break;
1613 num = pa_parse_number (&s, 0);
1614 CHECK_FIELD (num, 31, 0, 0);
1615 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
1616
1617 /* Handle %sar or %cr11. No bits get set, we just verify that it
1618 is there. */
1619 case '!':
1620 /* Skip whitespace before register. */
1621 while (*s == ' ' || *s == '\t')
1622 s = s + 1;
1623
1624 if (!strncasecmp(s, "%sar", 4))
1625 {
1626 s += 4;
1627 continue;
1628 }
1629 else if (!strncasecmp(s, "%cr11", 5))
1630 {
1631 s += 5;
1632 continue;
1633 }
1634 break;
1635
1636 /* Handle a 5 bit register field at 15. */
1637 case 'x':
1638 /* This should be more strict. Small steps. */
1639 if (strict && *s != '%')
1640 break;
1641 num = pa_parse_number (&s, 0);
1642 CHECK_FIELD (num, 31, 0, 0);
1643 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1644
1645 /* Handle a 5 bit register field at 31. */
1646 case 't':
1647 /* This should be more strict. Small steps. */
1648 if (strict && *s != '%')
1649 break;
1650 num = pa_parse_number (&s, 0);
1651 CHECK_FIELD (num, 31, 0, 0);
1652 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1653
1654 /* Handle a 5 bit register field at 10 and 15. */
1655 case 'a':
1656 /* This should be more strict. Small steps. */
1657 if (strict && *s != '%')
1658 break;
1659 num = pa_parse_number (&s, 0);
1660 CHECK_FIELD (num, 31, 0, 0);
1661 opcode |= num << 16;
1662 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
1663
1664 /* Handle a 5 bit field length at 31. */
1665 case 'T':
1666 num = pa_get_absolute_expression (&the_insn, &s);
1667 if (strict && the_insn.exp.X_op != O_constant)
1668 break;
1669 s = expr_end;
1670 CHECK_FIELD (num, 32, 1, 0);
1671 INSERT_FIELD_AND_CONTINUE (opcode, 32 - num, 0);
1672
1673 /* Handle a 5 bit immediate at 15. */
1674 case '5':
1675 num = pa_get_absolute_expression (&the_insn, &s);
1676 if (strict && the_insn.exp.X_op != O_constant)
1677 break;
1678 s = expr_end;
1679 /* When in strict mode, we want to just reject this
1680 match instead of giving an out of range error. */
1681 CHECK_FIELD (num, 15, -16, strict);
1682 low_sign_unext (num, 5, &num);
1683 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1684
1685 /* Handle a 5 bit immediate at 31. */
1686 case 'V':
1687 num = pa_get_absolute_expression (&the_insn, &s);
1688 if (strict && the_insn.exp.X_op != O_constant)
1689 break;
1690 s = expr_end;
1691 /* When in strict mode, we want to just reject this
1692 match instead of giving an out of range error. */
1693 CHECK_FIELD (num, 15, -16, strict)
1694 low_sign_unext (num, 5, &num);
1695 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1696
1697 /* Handle an unsigned 5 bit immediate at 31. */
1698 case 'r':
1699 num = pa_get_absolute_expression (&the_insn, &s);
1700 if (strict && the_insn.exp.X_op != O_constant)
1701 break;
1702 s = expr_end;
1703 CHECK_FIELD (num, 31, 0, 0);
1704 INSERT_FIELD_AND_CONTINUE (opcode, num, strict);
1705
1706 /* Handle an unsigned 5 bit immediate at 15. */
1707 case 'R':
1708 num = pa_get_absolute_expression (&the_insn, &s);
1709 if (strict && the_insn.exp.X_op != O_constant)
1710 break;
1711 s = expr_end;
1712 CHECK_FIELD (num, 31, 0, strict);
1713 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1714
1715 /* Handle an unsigned 10 bit immediate at 15. */
1716 case 'U':
1717 num = pa_get_absolute_expression (&the_insn, &s);
1718 if (strict && the_insn.exp.X_op != O_constant)
1719 break;
1720 s = expr_end;
1721 CHECK_FIELD (num, 1023, 0, strict);
1722 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1723
1724 /* Handle a 2 bit space identifier at 17. */
1725 case 's':
1726 /* This should be more strict. Small steps. */
1727 if (strict && *s != '%')
1728 break;
1729 num = pa_parse_number (&s, 0);
1730 CHECK_FIELD (num, 3, 0, 1);
1731 INSERT_FIELD_AND_CONTINUE (opcode, num, 14);
1732
1733 /* Handle a 3 bit space identifier at 18. */
1734 case 'S':
1735 /* This should be more strict. Small steps. */
1736 if (strict && *s != '%')
1737 break;
1738 num = pa_parse_number (&s, 0);
1739 CHECK_FIELD (num, 7, 0, 1);
1740 dis_assemble_3 (num, &num);
1741 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
1742
1743 /* Handle all completers. */
1744 case 'c':
1745 switch (*++args)
1746 {
1747
1748 /* Handle a completer for an indexing load or store. */
1749 case 'x':
1750 {
1751 int uu = 0;
1752 int m = 0;
1753 int i = 0;
1754 while (*s == ',' && i < 2)
1755 {
1756 s++;
1757 if (strncasecmp (s, "sm", 2) == 0)
1758 {
1759 uu = 1;
1760 m = 1;
1761 s++;
1762 i++;
1763 }
1764 else if (strncasecmp (s, "m", 1) == 0)
1765 m = 1;
1766 else if (strncasecmp (s, "s", 1) == 0)
1767 uu = 1;
1768 /* When in strict mode this is a match failure. */
1769 else if (strict)
1770 break;
1771 else
1772 as_bad (_("Invalid Indexed Load Completer."));
1773 s++;
1774 i++;
1775 }
1776 if (i > 2)
1777 as_bad (_("Invalid Indexed Load Completer Syntax."));
1778 opcode |= m << 5;
1779 INSERT_FIELD_AND_CONTINUE (opcode, uu, 13);
1780 }
1781
1782 /* Handle a short load/store completer. */
1783 case 'm':
1784 {
1785 int a = 0;
1786 int m = 0;
1787 if (*s == ',')
1788 {
1789 s++;
1790 if (strncasecmp (s, "ma", 2) == 0)
1791 {
1792 a = 0;
1793 m = 1;
1794 }
1795 else if (strncasecmp (s, "mb", 2) == 0)
1796 {
1797 a = 1;
1798 m = 1;
1799 }
1800 /* When in strict mode this is a match failure. */
1801 else if (strict)
1802 break;
1803 else
1804 as_bad (_("Invalid Short Load/Store Completer."));
1805 s += 2;
1806 }
1807
1808 opcode |= m << 5;
1809 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1810 }
1811
1812 /* Handle a stbys completer. */
1813 case 's':
1814 {
1815 int a = 0;
1816 int m = 0;
1817 int i = 0;
1818 while (*s == ',' && i < 2)
1819 {
1820 s++;
1821 if (strncasecmp (s, "m", 1) == 0)
1822 m = 1;
1823 else if (strncasecmp (s, "b", 1) == 0)
1824 a = 0;
1825 else if (strncasecmp (s, "e", 1) == 0)
1826 a = 1;
1827 /* When in strict mode this is a match failure. */
1828 else if (strict)
1829 break;
1830 else
1831 as_bad (_("Invalid Store Bytes Short Completer"));
1832 s++;
1833 i++;
1834 }
1835 if (i > 2)
1836 as_bad (_("Invalid Store Bytes Short Completer"));
1837 opcode |= m << 5;
1838 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1839 }
1840
1841 /* Handle a local processor completer. */
1842 case 'L':
1843 if (strncasecmp (s, ",l", 2) != 0)
1844 break;
1845 s += 2;
1846 continue;
1847
1848 /* Handle a PROBE read/write completer. */
1849 case 'w':
1850 flag = 0;
1851 if (!strncasecmp (s, ",w", 2))
1852 {
1853 flag = 1;
1854 s += 2;
1855 }
1856 else if (!strncasecmp (s, ",r", 2))
1857 {
1858 flag = 0;
1859 s += 2;
1860 }
1861
1862 INSERT_FIELD_AND_CONTINUE (opcode, flag, 6);
1863
1864 /* Handle MFCTL wide completer. */
1865 case 'W':
1866 if (strncasecmp (s, ",w", 2) != 0)
1867 break;
1868 s += 2;
1869 continue;
1870
1871 /* Handle an RFI restore completer. */
1872 case 'r':
1873 flag = 0;
1874 if (!strncasecmp (s, ",r", 2))
1875 {
1876 flag = 5;
1877 s += 2;
1878 }
1879
1880 INSERT_FIELD_AND_CONTINUE (opcode, flag, 5);
1881
1882 /* Handle a system control completer. */
1883 case 'Z':
1884 if (*s == ',' && (*(s + 1) == 'm' || *(s + 1) == 'M'))
1885 {
1886 flag = 1;
1887 s += 2;
1888 }
1889 else
1890 flag = 0;
1891
1892 INSERT_FIELD_AND_CONTINUE (opcode, flag, 5);
1893
1894 /* Handle intermediate/final completer for DCOR. */
1895 case 'i':
1896 flag = 0;
1897 if (!strncasecmp (s, ",i", 2))
1898 {
1899 flag = 1;
1900 s += 2;
1901 }
1902
1903 INSERT_FIELD_AND_CONTINUE (opcode, flag, 6);
1904
1905 /* Handle zero/sign extension completer. */
1906 case 'z':
1907 flag = 1;
1908 if (!strncasecmp (s, ",z", 2))
1909 {
1910 flag = 0;
1911 s += 2;
1912 }
1913
1914 INSERT_FIELD_AND_CONTINUE (opcode, flag, 10);
1915
1916 /* Handle add completer. */
1917 case 'a':
1918 flag = 1;
1919 if (!strncasecmp (s, ",l", 2))
1920 {
1921 flag = 2;
1922 s += 2;
1923 }
1924 else if (!strncasecmp (s, ",tsv", 4))
1925 {
1926 flag = 3;
1927 s += 4;
1928 }
1929
1930 INSERT_FIELD_AND_CONTINUE (opcode, flag, 10);
1931
1932 /* Handle 64 bit carry for ADD. */
1933 case 'Y':
1934 flag = 0;
1935 if (!strncasecmp (s, ",dc,tsv", 7) ||
1936 !strncasecmp (s, ",tsv,dc", 7))
1937 {
1938 flag = 1;
1939 s += 7;
1940 }
1941 else if (!strncasecmp (s, ",dc", 3))
1942 {
1943 flag = 0;
1944 s += 3;
1945 }
1946 else
1947 break;
1948
1949 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
1950
1951 /* Handle 32 bit carry for ADD. */
1952 case 'y':
1953 flag = 0;
1954 if (!strncasecmp (s, ",c,tsv", 6) ||
1955 !strncasecmp (s, ",tsv,c", 6))
1956 {
1957 flag = 1;
1958 s += 6;
1959 }
1960 else if (!strncasecmp (s, ",c", 2))
1961 {
1962 flag = 0;
1963 s += 2;
1964 }
1965 else
1966 break;
1967
1968 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
1969
1970 /* Handle trap on signed overflow. */
1971 case 'v':
1972 flag = 0;
1973 if (!strncasecmp (s, ",tsv", 4))
1974 {
1975 flag = 1;
1976 s += 4;
1977 }
1978
1979 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
1980
1981 /* Handle trap on condition and overflow. */
1982 case 't':
1983 flag = 0;
1984 if (!strncasecmp (s, ",tc,tsv", 7) ||
1985 !strncasecmp (s, ",tsv,tc", 7))
1986 {
1987 flag = 1;
1988 s += 7;
1989 }
1990 else if (!strncasecmp (s, ",tc", 3))
1991 {
1992 flag = 0;
1993 s += 3;
1994 }
1995 else
1996 break;
1997
1998 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
1999
2000 /* Handle 64 bit borrow for SUB. */
2001 case 'B':
2002 flag = 0;
2003 if (!strncasecmp (s, ",db,tsv", 7) ||
2004 !strncasecmp (s, ",tsv,db", 7))
2005 {
2006 flag = 1;
2007 s += 7;
2008 }
2009 else if (!strncasecmp (s, ",db", 3))
2010 {
2011 flag = 0;
2012 s += 3;
2013 }
2014 else
2015 break;
2016
2017 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
2018
2019 /* Handle 32 bit borrow for SUB. */
2020 case 'b':
2021 flag = 0;
2022 if (!strncasecmp (s, ",b,tsv", 6) ||
2023 !strncasecmp (s, ",tsv,b", 6))
2024 {
2025 flag = 1;
2026 s += 6;
2027 }
2028 else if (!strncasecmp (s, ",b", 2))
2029 {
2030 flag = 0;
2031 s += 2;
2032 }
2033 else
2034 break;
2035
2036 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
2037
2038 /* Handle trap condition completer for UADDCM. */
2039 case 'T':
2040 flag = 0;
2041 if (!strncasecmp (s, ",tc", 3))
2042 {
2043 flag = 1;
2044 s += 3;
2045 }
2046
2047 INSERT_FIELD_AND_CONTINUE (opcode, flag, 6);
2048
2049 /* Handle signed/unsigned at 21. */
2050 case 'S':
2051 {
2052 int sign = 1;
2053 if (strncasecmp (s, ",s", 2) == 0)
2054 {
2055 sign = 1;
2056 s += 2;
2057 }
2058 else if (strncasecmp (s, ",u", 2) == 0)
2059 {
2060 sign = 0;
2061 s += 2;
2062 }
2063
2064 INSERT_FIELD_AND_CONTINUE (opcode, sign, 10);
2065 }
2066
2067 /* Handle left/right combination at 17:18. */
2068 case 'h':
2069 if (*s++ == ',')
2070 {
2071 int lr = 0;
2072 if (*s == 'r')
2073 lr = 2;
2074 else if (*s == 'l')
2075 lr = 0;
2076 else
2077 as_bad(_("Invalid left/right combination completer"));
2078
2079 s++;
2080 INSERT_FIELD_AND_CONTINUE (opcode, lr, 13);
2081 }
2082 else
2083 as_bad(_("Invalid left/right combination completer"));
2084 break;
2085
2086 /* Handle saturation at 24:25. */
2087 case 'H':
2088 {
2089 int sat = 3;
2090 if (strncasecmp (s, ",ss", 3) == 0)
2091 {
2092 sat = 1;
2093 s += 3;
2094 }
2095 else if (strncasecmp (s, ",us", 3) == 0)
2096 {
2097 sat = 0;
2098 s += 3;
2099 }
2100
2101 INSERT_FIELD_AND_CONTINUE (opcode, sat, 6);
2102 }
2103
2104 /* Handle permutation completer. */
2105 case '*':
2106 if (*s++ == ',')
2107 {
2108 int permloc[4] = {13,10,8,6};
2109 int perm = 0;
2110 int i = 0;
2111 for (; i < 4; i++)
2112 {
2113 switch (*s++)
2114 {
2115 case '0':
2116 perm = 0;
2117 break;
2118 case '1':
2119 perm = 1;
2120 break;
2121 case '2':
2122 perm = 2;
2123 break;
2124 case '3':
2125 perm = 3;
2126 break;
2127 default:
2128 as_bad(_("Invalid permutation completer"));
2129 }
2130 opcode |= perm << permloc[i];
2131 }
2132 continue;
2133 }
2134 else
2135 as_bad(_("Invalid permutation completer"));
2136 break;
2137
2138 default:
2139 abort ();
2140 }
2141 break;
2142
2143 /* Handle all conditions. */
2144 case '?':
2145 {
2146 args++;
2147 switch (*args)
2148 {
2149 /* Handle FP compare conditions. */
2150 case 'f':
2151 cond = pa_parse_fp_cmp_cond (&s);
2152 INSERT_FIELD_AND_CONTINUE (opcode, cond, 0);
2153
2154 /* Handle an add condition. */
2155 case 'A':
2156 case 'a':
2157 cmpltr = 0;
2158 flag = 0;
2159 if (*s == ',')
2160 {
2161 s++;
2162
2163 /* 64 bit conditions. */
2164 if (*args == 'A')
2165 {
2166 if (*s == '*')
2167 s++;
2168 else
2169 break;
2170 }
2171 else if (*s == '*')
2172 break;
2173 name = s;
2174
2175 name = s;
2176 while (*s != ',' && *s != ' ' && *s != '\t')
2177 s += 1;
2178 c = *s;
2179 *s = 0x00;
2180 if (strcmp (name, "=") == 0)
2181 cmpltr = 1;
2182 else if (strcmp (name, "<") == 0)
2183 cmpltr = 2;
2184 else if (strcmp (name, "<=") == 0)
2185 cmpltr = 3;
2186 else if (strcasecmp (name, "nuv") == 0)
2187 cmpltr = 4;
2188 else if (strcasecmp (name, "znv") == 0)
2189 cmpltr = 5;
2190 else if (strcasecmp (name, "sv") == 0)
2191 cmpltr = 6;
2192 else if (strcasecmp (name, "od") == 0)
2193 cmpltr = 7;
2194 else if (strcasecmp (name, "tr") == 0)
2195 {
2196 cmpltr = 0;
2197 flag = 1;
2198 }
2199 else if (strcmp (name, "<>") == 0)
2200 {
2201 cmpltr = 1;
2202 flag = 1;
2203 }
2204 else if (strcmp (name, ">=") == 0)
2205 {
2206 cmpltr = 2;
2207 flag = 1;
2208 }
2209 else if (strcmp (name, ">") == 0)
2210 {
2211 cmpltr = 3;
2212 flag = 1;
2213 }
2214 else if (strcasecmp (name, "uv") == 0)
2215 {
2216 cmpltr = 4;
2217 flag = 1;
2218 }
2219 else if (strcasecmp (name, "vnz") == 0)
2220 {
2221 cmpltr = 5;
2222 flag = 1;
2223 }
2224 else if (strcasecmp (name, "nsv") == 0)
2225 {
2226 cmpltr = 6;
2227 flag = 1;
2228 }
2229 else if (strcasecmp (name, "ev") == 0)
2230 {
2231 cmpltr = 7;
2232 flag = 1;
2233 }
2234 /* ",*" is a valid condition. */
2235 else if (*args == 'a')
2236 as_bad (_("Invalid Add Condition: %s"), name);
2237 *s = c;
2238 }
2239 opcode |= cmpltr << 13;
2240 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2241
2242 /* Handle non-negated add and branch condition. */
2243 case 'd':
2244 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
2245 if (cmpltr < 0)
2246 {
2247 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s);
2248 cmpltr = 0;
2249 }
2250 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2251
2252 /* Handle negated add and branch condition. */
2253 case 'D':
2254 abort ();
2255
2256 /* Handle wide-mode non-negated add and branch condition. */
2257 case 'w':
2258 abort ();
2259
2260 /* Handle wide-mode negated add and branch condition. */
2261 case 'W':
2262 abort();
2263
2264 /* Handle a negated or non-negated add and branch
2265 condition. */
2266 case '@':
2267 save_s = s;
2268 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
2269 if (cmpltr < 0)
2270 {
2271 s = save_s;
2272 cmpltr = pa_parse_neg_add_cmpltr (&s, 1);
2273 if (cmpltr < 0)
2274 {
2275 as_bad (_("Invalid Compare/Subtract Condition"));
2276 cmpltr = 0;
2277 }
2278 else
2279 {
2280 /* Negated condition requires an opcode change. */
2281 opcode |= 1 << 27;
2282 }
2283 }
2284 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2285
2286 /* Handle branch on bit conditions. */
2287 case 'B':
2288 case 'b':
2289 cmpltr = 0;
2290 if (*s == ',')
2291 {
2292 s++;
2293
2294 if (*args == 'B')
2295 {
2296 if (*s == '*')
2297 s++;
2298 else
2299 break;
2300 }
2301 else if (*s == '*')
2302 break;
2303
2304 if (strncmp (s, "<", 1) == 0)
2305 {
2306 cmpltr = 0;
2307 s++;
2308 }
2309 else if (strncmp (s, ">=", 2) == 0)
2310 {
2311 cmpltr = 1;
2312 s += 2;
2313 }
2314 else
2315 as_bad (_("Invalid Bit Branch Condition: %c"), *s);
2316 }
2317 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 15);
2318
2319 /* Handle a compare/subtract condition. */
2320 case 'S':
2321 case 's':
2322 cmpltr = 0;
2323 flag = 0;
2324 if (*s == ',')
2325 {
2326 s++;
2327
2328 /* 64 bit conditions. */
2329 if (*args == 'S')
2330 {
2331 if (*s == '*')
2332 s++;
2333 else
2334 break;
2335 }
2336 else if (*s == '*')
2337 break;
2338 name = s;
2339
2340 name = s;
2341 while (*s != ',' && *s != ' ' && *s != '\t')
2342 s += 1;
2343 c = *s;
2344 *s = 0x00;
2345 if (strcmp (name, "=") == 0)
2346 cmpltr = 1;
2347 else if (strcmp (name, "<") == 0)
2348 cmpltr = 2;
2349 else if (strcmp (name, "<=") == 0)
2350 cmpltr = 3;
2351 else if (strcasecmp (name, "<<") == 0)
2352 cmpltr = 4;
2353 else if (strcasecmp (name, "<<=") == 0)
2354 cmpltr = 5;
2355 else if (strcasecmp (name, "sv") == 0)
2356 cmpltr = 6;
2357 else if (strcasecmp (name, "od") == 0)
2358 cmpltr = 7;
2359 else if (strcasecmp (name, "tr") == 0)
2360 {
2361 cmpltr = 0;
2362 flag = 1;
2363 }
2364 else if (strcmp (name, "<>") == 0)
2365 {
2366 cmpltr = 1;
2367 flag = 1;
2368 }
2369 else if (strcmp (name, ">=") == 0)
2370 {
2371 cmpltr = 2;
2372 flag = 1;
2373 }
2374 else if (strcmp (name, ">") == 0)
2375 {
2376 cmpltr = 3;
2377 flag = 1;
2378 }
2379 else if (strcasecmp (name, ">>=") == 0)
2380 {
2381 cmpltr = 4;
2382 flag = 1;
2383 }
2384 else if (strcasecmp (name, ">>") == 0)
2385 {
2386 cmpltr = 5;
2387 flag = 1;
2388 }
2389 else if (strcasecmp (name, "nsv") == 0)
2390 {
2391 cmpltr = 6;
2392 flag = 1;
2393 }
2394 else if (strcasecmp (name, "ev") == 0)
2395 {
2396 cmpltr = 7;
2397 flag = 1;
2398 }
2399 /* ",*" is a valid condition. */
2400 else if (*args != 'S')
2401 as_bad (_("Invalid Compare/Subtract Condition: %s"),
2402 name);
2403 *s = c;
2404 }
2405 opcode |= cmpltr << 13;
2406 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2407
2408 /* Handle a non-negated compare condition. */
2409 case 't':
2410 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
2411 if (cmpltr < 0)
2412 {
2413 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s);
2414 cmpltr = 0;
2415 }
2416 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2417
2418 /* Handle a negated compare condition. */
2419 case 'T':
2420 abort ();
2421
2422 /* Handle a 64 bit non-negated compare condition. */
2423 case 'r':
2424 abort ();
2425
2426 /* Handle a 64 bit negated compare condition. */
2427 case 'R':
2428 abort ();
2429
2430 /* Handle a 64 bit cmpib condition. */
2431 case 'Q':
2432 abort ();
2433
2434 /* Handle a negated or non-negated compare/subtract
2435 condition. */
2436 case 'n':
2437 save_s = s;
2438 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
2439 if (cmpltr < 0)
2440 {
2441 s = save_s;
2442 cmpltr = pa_parse_neg_cmpsub_cmpltr (&s, 1);
2443 if (cmpltr < 0)
2444 {
2445 as_bad (_("Invalid Compare/Subtract Condition."));
2446 cmpltr = 0;
2447 }
2448 else
2449 {
2450 /* Negated condition requires an opcode change. */
2451 opcode |= 1 << 27;
2452 }
2453 }
2454
2455 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2456
2457 /* Handle a logical instruction condition. */
2458 case 'L':
2459 case 'l':
2460 cmpltr = 0;
2461 flag = 0;
2462 if (*s == ',')
2463 {
2464 s++;
2465
2466 /* 64 bit conditions. */
2467 if (*args == 'L')
2468 {
2469 if (*s == '*')
2470 s++;
2471 else
2472 break;
2473 }
2474 else if (*s == '*')
2475 break;
2476 name = s;
2477
2478 name = s;
2479 while (*s != ',' && *s != ' ' && *s != '\t')
2480 s += 1;
2481 c = *s;
2482 *s = 0x00;
2483
2484
2485 if (strcmp (name, "=") == 0)
2486 cmpltr = 1;
2487 else if (strcmp (name, "<") == 0)
2488 cmpltr = 2;
2489 else if (strcmp (name, "<=") == 0)
2490 cmpltr = 3;
2491 else if (strcasecmp (name, "od") == 0)
2492 cmpltr = 7;
2493 else if (strcasecmp (name, "tr") == 0)
2494 {
2495 cmpltr = 0;
2496 flag = 1;
2497 }
2498 else if (strcmp (name, "<>") == 0)
2499 {
2500 cmpltr = 1;
2501 flag = 1;
2502 }
2503 else if (strcmp (name, ">=") == 0)
2504 {
2505 cmpltr = 2;
2506 flag = 1;
2507 }
2508 else if (strcmp (name, ">") == 0)
2509 {
2510 cmpltr = 3;
2511 flag = 1;
2512 }
2513 else if (strcasecmp (name, "ev") == 0)
2514 {
2515 cmpltr = 7;
2516 flag = 1;
2517 }
2518 /* ",*" is a valid condition. */
2519 else if (*args != 'L')
2520 as_bad (_("Invalid Logical Instruction Condition."));
2521 *s = c;
2522 }
2523 opcode |= cmpltr << 13;
2524 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2525
2526 /* Handle a shift/extract/deposit condition. */
2527 case 'X':
2528 case 'x':
2529 case 'y':
2530 cmpltr = 0;
2531 if (*s == ',')
2532 {
2533 save_s = s++;
2534
2535 /* 64 bit conditions. */
2536 if (*args == 'X')
2537 {
2538 if (*s == '*')
2539 s++;
2540 else
2541 break;
2542 }
2543 else if (*s == '*')
2544 break;
2545 name = s;
2546
2547 name = s;
2548 while (*s != ',' && *s != ' ' && *s != '\t')
2549 s += 1;
2550 c = *s;
2551 *s = 0x00;
2552 if (strcmp (name, "=") == 0)
2553 cmpltr = 1;
2554 else if (strcmp (name, "<") == 0)
2555 cmpltr = 2;
2556 else if (strcasecmp (name, "od") == 0)
2557 cmpltr = 3;
2558 else if (strcasecmp (name, "tr") == 0)
2559 cmpltr = 4;
2560 else if (strcmp (name, "<>") == 0)
2561 cmpltr = 5;
2562 else if (strcmp (name, ">=") == 0)
2563 cmpltr = 6;
2564 else if (strcasecmp (name, "ev") == 0)
2565 cmpltr = 7;
2566 /* Handle movb,n. Put things back the way they were.
2567 This includes moving s back to where it started. */
2568 else if (strcasecmp (name, "n") == 0 && *args == 'y')
2569 {
2570 *s = c;
2571 s = save_s;
2572 continue;
2573 }
2574 /* ",*" is a valid condition. */
2575 else if (*args != 'X')
2576 as_bad (_("Invalid Shift/Extract/Deposit Condition."));
2577 *s = c;
2578 }
2579 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2580
2581 /* Handle a unit instruction condition. */
2582 case 'U':
2583 case 'u':
2584 cmpltr = 0;
2585 flag = 0;
2586 if (*s == ',')
2587 {
2588 s++;
2589
2590 /* 64 bit conditions. */
2591 if (*args == 'U')
2592 {
2593 if (*s == '*')
2594 s++;
2595 else
2596 break;
2597 }
2598 else if (*s == '*')
2599 break;
2600
2601 if (strncasecmp (s, "sbz", 3) == 0)
2602 {
2603 cmpltr = 2;
2604 s += 3;
2605 }
2606 else if (strncasecmp (s, "shz", 3) == 0)
2607 {
2608 cmpltr = 3;
2609 s += 3;
2610 }
2611 else if (strncasecmp (s, "sdc", 3) == 0)
2612 {
2613 cmpltr = 4;
2614 s += 3;
2615 }
2616 else if (strncasecmp (s, "sbc", 3) == 0)
2617 {
2618 cmpltr = 6;
2619 s += 3;
2620 }
2621 else if (strncasecmp (s, "shc", 3) == 0)
2622 {
2623 cmpltr = 7;
2624 s += 3;
2625 }
2626 else if (strncasecmp (s, "tr", 2) == 0)
2627 {
2628 cmpltr = 0;
2629 flag = 1;
2630 s += 2;
2631 }
2632 else if (strncasecmp (s, "nbz", 3) == 0)
2633 {
2634 cmpltr = 2;
2635 flag = 1;
2636 s += 3;
2637 }
2638 else if (strncasecmp (s, "nhz", 3) == 0)
2639 {
2640 cmpltr = 3;
2641 flag = 1;
2642 s += 3;
2643 }
2644 else if (strncasecmp (s, "ndc", 3) == 0)
2645 {
2646 cmpltr = 4;
2647 flag = 1;
2648 s += 3;
2649 }
2650 else if (strncasecmp (s, "nbc", 3) == 0)
2651 {
2652 cmpltr = 6;
2653 flag = 1;
2654 s += 3;
2655 }
2656 else if (strncasecmp (s, "nhc", 3) == 0)
2657 {
2658 cmpltr = 7;
2659 flag = 1;
2660 s += 3;
2661 }
2662 /* ",*" is a valid condition. */
2663 else if (*args != 'U')
2664 as_bad (_("Invalid Unit Instruction Condition."));
2665 }
2666 opcode |= cmpltr << 13;
2667 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2668
2669 default:
2670 abort ();
2671 }
2672 break;
2673 }
2674
2675 /* Handle a nullification completer for branch instructions. */
2676 case 'n':
2677 nullif = pa_parse_nullif (&s);
2678 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 1);
2679
2680 /* Handle a nullification completer for copr and spop insns. */
2681 case 'N':
2682 nullif = pa_parse_nullif (&s);
2683 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 5);
2684
2685
2686 /* Handle a 11 bit immediate at 31. */
2687 case 'i':
2688 the_insn.field_selector = pa_chk_field_selector (&s);
2689 get_expression (s);
2690 s = expr_end;
2691 if (the_insn.exp.X_op == O_constant)
2692 {
2693 num = evaluate_absolute (&the_insn);
2694 CHECK_FIELD (num, 1023, -1024, 0);
2695 low_sign_unext (num, 11, &num);
2696 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2697 }
2698 else
2699 {
2700 if (is_DP_relative (the_insn.exp))
2701 the_insn.reloc = R_HPPA_GOTOFF;
2702 else if (is_PC_relative (the_insn.exp))
2703 the_insn.reloc = R_HPPA_PCREL_CALL;
2704 else
2705 the_insn.reloc = R_HPPA;
2706 the_insn.format = 11;
2707 continue;
2708 }
2709
2710
2711 /* Handle a 14 bit immediate at 31. */
2712 case 'j':
2713 the_insn.field_selector = pa_chk_field_selector (&s);
2714 get_expression (s);
2715 s = expr_end;
2716 if (the_insn.exp.X_op == O_constant)
2717 {
2718 num = evaluate_absolute (&the_insn);
2719 CHECK_FIELD (num, 8191, -8192, 0);
2720 low_sign_unext (num, 14, &num);
2721 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2722 }
2723 else
2724 {
2725 if (is_DP_relative (the_insn.exp))
2726 the_insn.reloc = R_HPPA_GOTOFF;
2727 else if (is_PC_relative (the_insn.exp))
2728 the_insn.reloc = R_HPPA_PCREL_CALL;
2729 else
2730 the_insn.reloc = R_HPPA;
2731 the_insn.format = 14;
2732 continue;
2733 }
2734
2735 /* Handle a 21 bit immediate at 31. */
2736 case 'k':
2737 the_insn.field_selector = pa_chk_field_selector (&s);
2738 get_expression (s);
2739 s = expr_end;
2740 if (the_insn.exp.X_op == O_constant)
2741 {
2742 num = evaluate_absolute (&the_insn);
2743 CHECK_FIELD (num >> 11, 1048575, -1048576, 0);
2744 dis_assemble_21 (num, &num);
2745 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2746 }
2747 else
2748 {
2749 if (is_DP_relative (the_insn.exp))
2750 the_insn.reloc = R_HPPA_GOTOFF;
2751 else if (is_PC_relative (the_insn.exp))
2752 the_insn.reloc = R_HPPA_PCREL_CALL;
2753 else
2754 the_insn.reloc = R_HPPA;
2755 the_insn.format = 21;
2756 continue;
2757 }
2758
2759 /* Handle a 12 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 (!strcmp (S_GET_NAME (the_insn.exp.X_add_symbol), "L$0\001"))
2766 {
2767 unsigned int w1, w, result;
2768
2769 num = evaluate_absolute (&the_insn);
2770 if (num % 4)
2771 {
2772 as_bad (_("Branch to unaligned address"));
2773 break;
2774 }
2775 CHECK_FIELD (num, 8199, -8184, 0);
2776 sign_unext ((num - 8) >> 2, 12, &result);
2777 dis_assemble_12 (result, &w1, &w);
2778 INSERT_FIELD_AND_CONTINUE (opcode, ((w1 << 2) | w), 0);
2779 }
2780 else
2781 {
2782 the_insn.reloc = R_HPPA_PCREL_CALL;
2783 the_insn.format = 12;
2784 the_insn.arg_reloc = last_call_desc.arg_reloc;
2785 memset (&last_call_desc, 0, sizeof (struct call_desc));
2786 s = expr_end;
2787 continue;
2788 }
2789
2790 /* Handle a 17 bit branch displacement. */
2791 case 'W':
2792 the_insn.field_selector = pa_chk_field_selector (&s);
2793 get_expression (s);
2794 s = expr_end;
2795 the_insn.pcrel = 1;
2796 if (!the_insn.exp.X_add_symbol
2797 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2798 "L$0\001"))
2799 {
2800 unsigned int w2, w1, w, result;
2801
2802 num = evaluate_absolute (&the_insn);
2803 if (num % 4)
2804 {
2805 as_bad (_("Branch to unaligned address"));
2806 break;
2807 }
2808 CHECK_FIELD (num, 262143, -262144, 0);
2809
2810 if (the_insn.exp.X_add_symbol)
2811 num -= 8;
2812
2813 sign_unext (num >> 2, 17, &result);
2814 dis_assemble_17 (result, &w1, &w2, &w);
2815 INSERT_FIELD_AND_CONTINUE (opcode,
2816 ((w2 << 2) | (w1 << 16) | w), 0);
2817 }
2818 else
2819 {
2820 the_insn.reloc = R_HPPA_PCREL_CALL;
2821 the_insn.format = 17;
2822 the_insn.arg_reloc = last_call_desc.arg_reloc;
2823 memset (&last_call_desc, 0, sizeof (struct call_desc));
2824 continue;
2825 }
2826
2827 /* Handle an absolute 17 bit branch target. */
2828 case 'z':
2829 the_insn.field_selector = pa_chk_field_selector (&s);
2830 get_expression (s);
2831 s = expr_end;
2832 the_insn.pcrel = 0;
2833 if (!the_insn.exp.X_add_symbol
2834 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2835 "L$0\001"))
2836 {
2837 unsigned int w2, w1, w, result;
2838
2839 num = evaluate_absolute (&the_insn);
2840 if (num % 4)
2841 {
2842 as_bad (_("Branch to unaligned address"));
2843 break;
2844 }
2845 CHECK_FIELD (num, 262143, -262144, 0);
2846
2847 if (the_insn.exp.X_add_symbol)
2848 num -= 8;
2849
2850 sign_unext (num >> 2, 17, &result);
2851 dis_assemble_17 (result, &w1, &w2, &w);
2852 INSERT_FIELD_AND_CONTINUE (opcode,
2853 ((w2 << 2) | (w1 << 16) | w), 0);
2854 }
2855 else
2856 {
2857 the_insn.reloc = R_HPPA_ABS_CALL;
2858 the_insn.format = 17;
2859 the_insn.arg_reloc = last_call_desc.arg_reloc;
2860 memset (&last_call_desc, 0, sizeof (struct call_desc));
2861 continue;
2862 }
2863
2864 /* Handle '%r1' implicit operand of addil instruction. */
2865 case 'Z':
2866 if (*s == ',' && *(s + 1) == '%' && *(s + 3) == '1'
2867 && (*(s + 2) == 'r' || *(s + 2) == 'R'))
2868 {
2869 s += 4;
2870 continue;
2871 }
2872 else
2873 break;
2874
2875 /* Handle a 2 bit shift count at 25. */
2876 case '.':
2877 num = pa_get_absolute_expression (&the_insn, &s);
2878 if (strict && the_insn.exp.X_op != O_constant)
2879 break;
2880 s = expr_end;
2881 CHECK_FIELD (num, 3, 1, strict);
2882 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2883
2884 /* Handle a 4 bit shift count at 25. */
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, 15, 0, strict);
2891 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2892
2893 /* Handle a 5 bit shift count at 26. */
2894 case 'p':
2895 num = pa_get_absolute_expression (&the_insn, &s);
2896 if (strict && the_insn.exp.X_op != O_constant)
2897 break;
2898 s = expr_end;
2899 CHECK_FIELD (num, 31, 0, strict);
2900 INSERT_FIELD_AND_CONTINUE (opcode, 31 - num, 5);
2901
2902 /* Handle a 6 bit shift count at 20,22:26. */
2903 case '~':
2904 num = pa_get_absolute_expression (&the_insn, &s);
2905 if (strict && the_insn.exp.X_op != O_constant)
2906 break;
2907 s = expr_end;
2908 CHECK_FIELD (num, 63, 0, strict);
2909 num = 63 - num;
2910 opcode |= (num & 0x20) << 6;
2911 INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 5);
2912
2913 /* Handle a 6 bit field length at 23,27:31. */
2914 case '%':
2915 flag = 0;
2916 num = pa_get_absolute_expression (&the_insn, &s);
2917 if (strict && the_insn.exp.X_op != O_constant)
2918 break;
2919 s = expr_end;
2920 CHECK_FIELD (num, 64, 1, strict);
2921 num--;
2922 opcode |= (num & 0x20) << 3;
2923 num = 31 - (num & 0x1f);
2924 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2925
2926 /* Handle a 6 bit field length at 19,27:31. */
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, 64, 1, strict);
2933 num--;
2934 opcode |= (num & 0x20) << 7;
2935 num = 31 - (num & 0x1f);
2936 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2937
2938 /* Handle a 5 bit bit position at 26. */
2939 case 'P':
2940 num = pa_get_absolute_expression (&the_insn, &s);
2941 if (strict && the_insn.exp.X_op != O_constant)
2942 break;
2943 s = expr_end;
2944 CHECK_FIELD (num, 31, 0, strict);
2945 INSERT_FIELD_AND_CONTINUE (opcode, num, 5);
2946
2947 /* Handle a 6 bit bit position at 20,22:26. */
2948 case 'q':
2949 num = pa_get_absolute_expression (&the_insn, &s);
2950 if (strict && the_insn.exp.X_op != O_constant)
2951 break;
2952 s = expr_end;
2953 CHECK_FIELD (num, 63, 0, strict);
2954 opcode |= (num & 0x20) << 6;
2955 INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 5);
2956
2957 /* Handle a 5 bit immediate at 10. */
2958 case 'Q':
2959 num = pa_get_absolute_expression (&the_insn, &s);
2960 if (strict && the_insn.exp.X_op != O_constant)
2961 break;
2962 if (the_insn.exp.X_op != O_constant)
2963 break;
2964 s = expr_end;
2965 CHECK_FIELD (num, 31, 0, strict);
2966 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
2967
2968 /* Handle a 9 bit immediate at 28. */
2969 case '$':
2970 num = pa_get_absolute_expression (&the_insn, &s);
2971 if (strict && the_insn.exp.X_op != O_constant)
2972 break;
2973 s = expr_end;
2974 CHECK_FIELD (num, 511, 1, strict);
2975 INSERT_FIELD_AND_CONTINUE (opcode, num, 3);
2976
2977 /* Handle a 13 bit immediate at 18. */
2978 case 'A':
2979 num = pa_get_absolute_expression (&the_insn, &s);
2980 if (strict && the_insn.exp.X_op != O_constant)
2981 break;
2982 s = expr_end;
2983 CHECK_FIELD (num, 8191, 0, strict);
2984 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
2985
2986 /* Handle a 26 bit immediate at 31. */
2987 case 'D':
2988 num = pa_get_absolute_expression (&the_insn, &s);
2989 if (strict && the_insn.exp.X_op != O_constant)
2990 break;
2991 s = expr_end;
2992 CHECK_FIELD (num, 671108864, 0, strict);
2993 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2994
2995 /* Handle a 3 bit SFU identifier at 25. */
2996 case 'v':
2997 if (*s++ != ',')
2998 as_bad (_("Invalid SFU identifier"));
2999 num = pa_get_absolute_expression (&the_insn, &s);
3000 if (strict && the_insn.exp.X_op != O_constant)
3001 break;
3002 s = expr_end;
3003 CHECK_FIELD (num, 7, 0, strict);
3004 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
3005
3006 /* Handle a 20 bit SOP field for spop0. */
3007 case 'O':
3008 num = pa_get_absolute_expression (&the_insn, &s);
3009 if (strict && the_insn.exp.X_op != O_constant)
3010 break;
3011 s = expr_end;
3012 CHECK_FIELD (num, 1048575, 0, strict);
3013 num = (num & 0x1f) | ((num & 0x000fffe0) << 6);
3014 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
3015
3016 /* Handle a 15bit SOP field for spop1. */
3017 case 'o':
3018 num = pa_get_absolute_expression (&the_insn, &s);
3019 if (strict && the_insn.exp.X_op != O_constant)
3020 break;
3021 s = expr_end;
3022 CHECK_FIELD (num, 32767, 0, strict);
3023 INSERT_FIELD_AND_CONTINUE (opcode, num, 11);
3024
3025 /* Handle a 10bit SOP field for spop3. */
3026 case '0':
3027 num = pa_get_absolute_expression (&the_insn, &s);
3028 if (strict && the_insn.exp.X_op != O_constant)
3029 break;
3030 s = expr_end;
3031 CHECK_FIELD (num, 1023, 0, strict);
3032 num = (num & 0x1f) | ((num & 0x000003e0) << 6);
3033 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
3034
3035 /* Handle a 15 bit SOP field for spop2. */
3036 case '1':
3037 num = pa_get_absolute_expression (&the_insn, &s);
3038 if (strict && the_insn.exp.X_op != O_constant)
3039 break;
3040 s = expr_end;
3041 CHECK_FIELD (num, 32767, 0, strict);
3042 num = (num & 0x1f) | ((num & 0x00007fe0) << 6);
3043 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
3044
3045 /* Handle a 3-bit co-processor ID field. */
3046 case 'u':
3047 if (*s++ != ',')
3048 as_bad (_("Invalid COPR identifier"));
3049 num = pa_get_absolute_expression (&the_insn, &s);
3050 if (strict && the_insn.exp.X_op != O_constant)
3051 break;
3052 s = expr_end;
3053 CHECK_FIELD (num, 7, 0, strict);
3054 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
3055
3056 /* Handle a 22bit SOP field for copr. */
3057 case '2':
3058 num = pa_get_absolute_expression (&the_insn, &s);
3059 if (strict && the_insn.exp.X_op != O_constant)
3060 break;
3061 s = expr_end;
3062 CHECK_FIELD (num, 4194303, 0, strict);
3063 num = (num & 0x1f) | ((num & 0x003fffe0) << 4);
3064 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
3065
3066
3067 /* Handle a source FP operand format completer. */
3068 case 'F':
3069 flag = pa_parse_fp_format (&s);
3070 the_insn.fpof1 = flag;
3071 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
3072
3073 /* Handle a destination FP operand format completer. */
3074 case 'G':
3075 /* pa_parse_format needs the ',' prefix. */
3076 s--;
3077 flag = pa_parse_fp_format (&s);
3078 the_insn.fpof2 = flag;
3079 INSERT_FIELD_AND_CONTINUE (opcode, flag, 13);
3080
3081 /* Handle a source FP operand format completer at 20. */
3082 case 'I':
3083 flag = pa_parse_fp_format (&s);
3084 the_insn.fpof1 = flag;
3085 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
3086
3087 /* Handle a floating point operand format at 26.
3088 Only allows single and double precision. */
3089 case 'H':
3090 flag = pa_parse_fp_format (&s);
3091 switch (flag)
3092 {
3093 case SGL:
3094 opcode |= 0x20;
3095 case DBL:
3096 the_insn.fpof1 = flag;
3097 continue;
3098
3099 case QUAD:
3100 case ILLEGAL_FMT:
3101 default:
3102 as_bad (_("Invalid Floating Point Operand Format."));
3103 }
3104 break;
3105
3106 /* Handle all floating point registers. */
3107 case 'f':
3108 switch (*++args)
3109 {
3110 /* Float target register. */
3111 case 't':
3112 /* This should be more strict. Small steps. */
3113 if (strict && *s != '%')
3114 break;
3115 num = pa_parse_number (&s, 0);
3116 CHECK_FIELD (num, 31, 0, 0);
3117 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
3118
3119 /* Float target register with L/R selection. */
3120 case 'T':
3121 {
3122 struct pa_11_fp_reg_struct result;
3123
3124 /* This should be more strict. Small steps. */
3125 if (strict && *s != '%')
3126 break;
3127 pa_parse_number (&s, &result);
3128 CHECK_FIELD (result.number_part, 31, 0, 0);
3129 opcode |= result.number_part;
3130
3131 /* 0x30 opcodes are FP arithmetic operation opcodes
3132 and need to be turned into 0x38 opcodes. This
3133 is not necessary for loads/stores. */
3134 if (need_pa11_opcode (&the_insn, &result)
3135 && ((opcode & 0xfc000000) == 0x30000000))
3136 opcode |= 1 << 27;
3137
3138 INSERT_FIELD_AND_CONTINUE (opcode, result.l_r_select & 1, 6);
3139 }
3140
3141 /* Float operand 1. */
3142 case 'a':
3143 {
3144 struct pa_11_fp_reg_struct result;
3145
3146 /* This should be more strict. Small steps. */
3147 if (strict && *s != '%')
3148 break;
3149 pa_parse_number (&s, &result);
3150 CHECK_FIELD (result.number_part, 31, 0, 0);
3151 opcode |= result.number_part << 21;
3152 if (need_pa11_opcode (&the_insn, &result))
3153 {
3154 opcode |= (result.l_r_select & 1) << 7;
3155 opcode |= 1 << 27;
3156 }
3157 continue;
3158 }
3159
3160 /* Float operand 1 with L/R selection. */
3161 case 'X':
3162 case 'A':
3163 {
3164 struct pa_11_fp_reg_struct result;
3165
3166 /* This should be more strict. Small steps. */
3167 if (strict && *s != '%')
3168 break;
3169 pa_parse_number (&s, &result);
3170 CHECK_FIELD (result.number_part, 31, 0, 0);
3171 opcode |= result.number_part << 21;
3172 opcode |= (result.l_r_select & 1) << 7;
3173 continue;
3174 }
3175
3176 /* Float operand 2. */
3177 case 'b':
3178 {
3179 struct pa_11_fp_reg_struct result;
3180
3181 /* This should be more strict. Small steps. */
3182 if (strict && *s != '%')
3183 break;
3184 pa_parse_number (&s, &result);
3185 CHECK_FIELD (result.number_part, 31, 0, 0);
3186 opcode |= (result.number_part & 0x1f) << 16;
3187 if (need_pa11_opcode (&the_insn, &result))
3188 {
3189 opcode |= (result.l_r_select & 1) << 12;
3190 opcode |= 1 << 27;
3191 }
3192 continue;
3193 }
3194
3195 /* Float operand 2 with L/R selection. */
3196 case 'B':
3197 {
3198 struct pa_11_fp_reg_struct result;
3199
3200 /* This should be more strict. Small steps. */
3201 if (strict && *s != '%')
3202 break;
3203 pa_parse_number (&s, &result);
3204 CHECK_FIELD (result.number_part, 31, 0, 0);
3205 opcode |= (result.number_part & 0x1f) << 16;
3206 opcode |= (result.l_r_select & 1) << 12;
3207 continue;
3208 }
3209
3210 /* Float operand 3 for fmpyfadd, fmpynfadd. */
3211 case 'C':
3212 {
3213 struct pa_11_fp_reg_struct result;
3214 int regnum;
3215
3216 /* This should be more strict. Small steps. */
3217 if (strict && *s != '%')
3218 break;
3219 pa_parse_number (&s, &result);
3220 CHECK_FIELD (result.number_part, 31, 0, 0);
3221 opcode |= (result.number_part & 0x1c) << 11;
3222 opcode |= (result.number_part & 0x3) << 9;
3223 opcode |= (result.l_r_select & 1) << 8;
3224 continue;
3225 }
3226
3227 /* Float mult operand 1 for fmpyadd, fmpysub */
3228 case 'i':
3229 {
3230 struct pa_11_fp_reg_struct result;
3231
3232 /* This should be more strict. Small steps. */
3233 if (strict && *s != '%')
3234 break;
3235 pa_parse_number (&s, &result);
3236 CHECK_FIELD (result.number_part, 31, 0, 0);
3237 if (the_insn.fpof1 == SGL)
3238 {
3239 if (result.number_part < 16)
3240 {
3241 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
3242 break;
3243 }
3244
3245 result.number_part &= 0xF;
3246 result.number_part |= (result.l_r_select & 1) << 4;
3247 }
3248 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 21);
3249 }
3250
3251 /* Float mult operand 2 for fmpyadd, fmpysub */
3252 case 'j':
3253 {
3254 struct pa_11_fp_reg_struct result;
3255
3256 /* This should be more strict. Small steps. */
3257 if (strict && *s != '%')
3258 break;
3259 pa_parse_number (&s, &result);
3260 CHECK_FIELD (result.number_part, 31, 0, 0);
3261 if (the_insn.fpof1 == SGL)
3262 {
3263 if (result.number_part < 16)
3264 {
3265 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
3266 break;
3267 }
3268 result.number_part &= 0xF;
3269 result.number_part |= (result.l_r_select & 1) << 4;
3270 }
3271 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 16);
3272 }
3273
3274 /* Float mult target for fmpyadd, fmpysub */
3275 case 'k':
3276 {
3277 struct pa_11_fp_reg_struct result;
3278
3279 /* This should be more strict. Small steps. */
3280 if (strict && *s != '%')
3281 break;
3282 pa_parse_number (&s, &result);
3283 CHECK_FIELD (result.number_part, 31, 0, 0);
3284 if (the_insn.fpof1 == SGL)
3285 {
3286 if (result.number_part < 16)
3287 {
3288 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
3289 break;
3290 }
3291 result.number_part &= 0xF;
3292 result.number_part |= (result.l_r_select & 1) << 4;
3293 }
3294 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 0);
3295 }
3296
3297 /* Float add operand 1 for fmpyadd, fmpysub */
3298 case 'l':
3299 {
3300 struct pa_11_fp_reg_struct result;
3301
3302 /* This should be more strict. Small steps. */
3303 if (strict && *s != '%')
3304 break;
3305 pa_parse_number (&s, &result);
3306 CHECK_FIELD (result.number_part, 31, 0, 0);
3307 if (the_insn.fpof1 == SGL)
3308 {
3309 if (result.number_part < 16)
3310 {
3311 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
3312 break;
3313 }
3314 result.number_part &= 0xF;
3315 result.number_part |= (result.l_r_select & 1) << 4;
3316 }
3317 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 6);
3318 }
3319
3320 /* Float add target for fmpyadd, fmpysub */
3321 case 'm':
3322 {
3323 struct pa_11_fp_reg_struct result;
3324
3325 /* This should be more strict. Small steps. */
3326 if (strict && *s != '%')
3327 break;
3328 pa_parse_number (&s, &result);
3329 CHECK_FIELD (result.number_part, 31, 0, 0);
3330 if (the_insn.fpof1 == SGL)
3331 {
3332 if (result.number_part < 16)
3333 {
3334 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
3335 break;
3336 }
3337 result.number_part &= 0xF;
3338 result.number_part |= (result.l_r_select & 1) << 4;
3339 }
3340 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 11);
3341 }
3342
3343 default:
3344 abort ();
3345 }
3346 break;
3347
3348 /* Handle L/R register halves like 'x'. */
3349 case 'e':
3350 {
3351 struct pa_11_fp_reg_struct result;
3352
3353 /* This should be more strict. Small steps. */
3354 if (strict && *s != '%')
3355 break;
3356 pa_parse_number (&s, &result);
3357 CHECK_FIELD (result.number_part, 31, 0, 0);
3358 opcode |= (result.number_part & 0x1f) << 16;
3359 if (need_pa11_opcode (&the_insn, &result))
3360 {
3361 opcode |= (result.l_r_select & 1) << 1;
3362 }
3363 continue;
3364 }
3365
3366 default:
3367 abort ();
3368 }
3369 break;
3370 }
3371
3372 failed:
3373 /* Check if the args matched. */
3374 if (match == FALSE)
3375 {
3376 if (&insn[1] - pa_opcodes < (int) NUMOPCODES
3377 && !strcmp (insn->name, insn[1].name))
3378 {
3379 ++insn;
3380 s = argstart;
3381 continue;
3382 }
3383 else
3384 {
3385 as_bad (_("Invalid operands %s"), error_message);
3386 return;
3387 }
3388 }
3389 break;
3390 }
3391
3392 the_insn.opcode = opcode;
3393 }
3394
3395 /* Turn a string in input_line_pointer into a floating point constant of type
3396 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
3397 emitted is stored in *sizeP . An error message or NULL is returned. */
3398
3399 #define MAX_LITTLENUMS 6
3400
3401 char *
3402 md_atof (type, litP, sizeP)
3403 char type;
3404 char *litP;
3405 int *sizeP;
3406 {
3407 int prec;
3408 LITTLENUM_TYPE words[MAX_LITTLENUMS];
3409 LITTLENUM_TYPE *wordP;
3410 char *t;
3411
3412 switch (type)
3413 {
3414
3415 case 'f':
3416 case 'F':
3417 case 's':
3418 case 'S':
3419 prec = 2;
3420 break;
3421
3422 case 'd':
3423 case 'D':
3424 case 'r':
3425 case 'R':
3426 prec = 4;
3427 break;
3428
3429 case 'x':
3430 case 'X':
3431 prec = 6;
3432 break;
3433
3434 case 'p':
3435 case 'P':
3436 prec = 6;
3437 break;
3438
3439 default:
3440 *sizeP = 0;
3441 return _("Bad call to MD_ATOF()");
3442 }
3443 t = atof_ieee (input_line_pointer, type, words);
3444 if (t)
3445 input_line_pointer = t;
3446 *sizeP = prec * sizeof (LITTLENUM_TYPE);
3447 for (wordP = words; prec--;)
3448 {
3449 md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE));
3450 litP += sizeof (LITTLENUM_TYPE);
3451 }
3452 return NULL;
3453 }
3454
3455 /* Write out big-endian. */
3456
3457 void
3458 md_number_to_chars (buf, val, n)
3459 char *buf;
3460 valueT val;
3461 int n;
3462 {
3463 number_to_chars_bigendian (buf, val, n);
3464 }
3465
3466 /* Translate internal representation of relocation info to BFD target
3467 format. */
3468
3469 arelent **
3470 tc_gen_reloc (section, fixp)
3471 asection *section;
3472 fixS *fixp;
3473 {
3474 arelent *reloc;
3475 struct hppa_fix_struct *hppa_fixp;
3476 bfd_reloc_code_real_type code;
3477 static arelent *no_relocs = NULL;
3478 arelent **relocs;
3479 bfd_reloc_code_real_type **codes;
3480 int n_relocs;
3481 int i;
3482
3483 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
3484 if (fixp->fx_addsy == 0)
3485 return &no_relocs;
3486 assert (hppa_fixp != 0);
3487 assert (section != 0);
3488
3489 reloc = (arelent *) xmalloc (sizeof (arelent));
3490
3491 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3492 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3493 codes = (bfd_reloc_code_real_type **) hppa_gen_reloc_type (stdoutput,
3494 fixp->fx_r_type,
3495 hppa_fixp->fx_r_format,
3496 hppa_fixp->fx_r_field,
3497 fixp->fx_subsy != NULL,
3498 symbol_get_bfdsym (fixp->fx_addsy));
3499
3500 if (codes == NULL)
3501 abort ();
3502
3503 for (n_relocs = 0; codes[n_relocs]; n_relocs++)
3504 ;
3505
3506 relocs = (arelent **) xmalloc (sizeof (arelent *) * n_relocs + 1);
3507 reloc = (arelent *) xmalloc (sizeof (arelent) * n_relocs);
3508 for (i = 0; i < n_relocs; i++)
3509 relocs[i] = &reloc[i];
3510
3511 relocs[n_relocs] = NULL;
3512
3513 #ifdef OBJ_ELF
3514 switch (fixp->fx_r_type)
3515 {
3516 default:
3517 assert (n_relocs == 1);
3518
3519 code = *codes[0];
3520
3521 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3522 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3523 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
3524 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
3525 reloc->addend = 0; /* default */
3526
3527 assert (reloc->howto && code == reloc->howto->type);
3528
3529 /* Now, do any processing that is dependent on the relocation type. */
3530 switch (code)
3531 {
3532 case R_PARISC_DLTREL21L:
3533 case R_PARISC_DLTREL14R:
3534 case R_PARISC_DLTREL14F:
3535 case R_PARISC_PLABEL32:
3536 case R_PARISC_PLABEL21L:
3537 case R_PARISC_PLABEL14R:
3538 /* For plabel relocations, the addend of the
3539 relocation should be either 0 (no static link) or 2
3540 (static link required).
3541
3542 FIXME: We always assume no static link!
3543
3544 We also slam a zero addend into the DLT relative relocs;
3545 it doesn't make a lot of sense to use any addend since
3546 it gets you a different (eg unknown) DLT entry. */
3547 reloc->addend = 0;
3548 break;
3549
3550 case R_PARISC_PCREL21L:
3551 case R_PARISC_PCREL17R:
3552 case R_PARISC_PCREL17F:
3553 case R_PARISC_PCREL17C:
3554 case R_PARISC_PCREL14R:
3555 case R_PARISC_PCREL14F:
3556 /* The constant is stored in the instruction. */
3557 reloc->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
3558 break;
3559 default:
3560 reloc->addend = fixp->fx_offset;
3561 break;
3562 }
3563 break;
3564 }
3565 #else /* OBJ_SOM */
3566
3567 /* Walk over reach relocation returned by the BFD backend. */
3568 for (i = 0; i < n_relocs; i++)
3569 {
3570 code = *codes[i];
3571
3572 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3573 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3574 relocs[i]->howto = bfd_reloc_type_lookup (stdoutput, code);
3575 relocs[i]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3576
3577 switch (code)
3578 {
3579 case R_COMP2:
3580 /* The only time we ever use a R_COMP2 fixup is for the difference
3581 of two symbols. With that in mind we fill in all four
3582 relocs now and break out of the loop. */
3583 assert (i == 1);
3584 relocs[0]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
3585 relocs[0]->howto = bfd_reloc_type_lookup (stdoutput, *codes[0]);
3586 relocs[0]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3587 relocs[0]->addend = 0;
3588 relocs[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3589 *relocs[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3590 relocs[1]->howto = bfd_reloc_type_lookup (stdoutput, *codes[1]);
3591 relocs[1]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3592 relocs[1]->addend = 0;
3593 relocs[2]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3594 *relocs[2]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy);
3595 relocs[2]->howto = bfd_reloc_type_lookup (stdoutput, *codes[2]);
3596 relocs[2]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3597 relocs[2]->addend = 0;
3598 relocs[3]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
3599 relocs[3]->howto = bfd_reloc_type_lookup (stdoutput, *codes[3]);
3600 relocs[3]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3601 relocs[3]->addend = 0;
3602 relocs[4]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
3603 relocs[4]->howto = bfd_reloc_type_lookup (stdoutput, *codes[4]);
3604 relocs[4]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3605 relocs[4]->addend = 0;
3606 goto done;
3607 case R_PCREL_CALL:
3608 case R_ABS_CALL:
3609 relocs[i]->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
3610 break;
3611
3612 case R_DLT_REL:
3613 case R_DATA_PLABEL:
3614 case R_CODE_PLABEL:
3615 /* For plabel relocations, the addend of the
3616 relocation should be either 0 (no static link) or 2
3617 (static link required).
3618
3619 FIXME: We always assume no static link!
3620
3621 We also slam a zero addend into the DLT relative relocs;
3622 it doesn't make a lot of sense to use any addend since
3623 it gets you a different (eg unknown) DLT entry. */
3624 relocs[i]->addend = 0;
3625 break;
3626
3627 case R_N_MODE:
3628 case R_S_MODE:
3629 case R_D_MODE:
3630 case R_R_MODE:
3631 case R_FSEL:
3632 case R_LSEL:
3633 case R_RSEL:
3634 case R_BEGIN_BRTAB:
3635 case R_END_BRTAB:
3636 case R_BEGIN_TRY:
3637 case R_N0SEL:
3638 case R_N1SEL:
3639 /* There is no symbol or addend associated with these fixups. */
3640 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3641 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
3642 relocs[i]->addend = 0;
3643 break;
3644
3645 case R_END_TRY:
3646 case R_ENTRY:
3647 case R_EXIT:
3648 /* There is no symbol associated with these fixups. */
3649 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3650 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
3651 relocs[i]->addend = fixp->fx_offset;
3652 break;
3653
3654 default:
3655 relocs[i]->addend = fixp->fx_offset;
3656 }
3657 }
3658
3659 done:
3660 #endif
3661
3662 return relocs;
3663 }
3664
3665 /* Process any machine dependent frag types. */
3666
3667 void
3668 md_convert_frag (abfd, sec, fragP)
3669 register bfd *abfd;
3670 register asection *sec;
3671 register fragS *fragP;
3672 {
3673 unsigned int address;
3674
3675 if (fragP->fr_type == rs_machine_dependent)
3676 {
3677 switch ((int) fragP->fr_subtype)
3678 {
3679 case 0:
3680 fragP->fr_type = rs_fill;
3681 know (fragP->fr_var == 1);
3682 know (fragP->fr_next);
3683 address = fragP->fr_address + fragP->fr_fix;
3684 if (address % fragP->fr_offset)
3685 {
3686 fragP->fr_offset =
3687 fragP->fr_next->fr_address
3688 - fragP->fr_address
3689 - fragP->fr_fix;
3690 }
3691 else
3692 fragP->fr_offset = 0;
3693 break;
3694 }
3695 }
3696 }
3697
3698 /* Round up a section size to the appropriate boundary. */
3699
3700 valueT
3701 md_section_align (segment, size)
3702 asection *segment;
3703 valueT size;
3704 {
3705 int align = bfd_get_section_alignment (stdoutput, segment);
3706 int align2 = (1 << align) - 1;
3707
3708 return (size + align2) & ~align2;
3709 }
3710
3711 /* Return the approximate size of a frag before relaxation has occurred. */
3712 int
3713 md_estimate_size_before_relax (fragP, segment)
3714 register fragS *fragP;
3715 asection *segment;
3716 {
3717 int size;
3718
3719 size = 0;
3720
3721 while ((fragP->fr_fix + size) % fragP->fr_offset)
3722 size++;
3723
3724 return size;
3725 }
3726 \f
3727 CONST char *md_shortopts = "";
3728 struct option md_longopts[] = {
3729 {NULL, no_argument, NULL, 0}
3730 };
3731 size_t md_longopts_size = sizeof(md_longopts);
3732
3733 int
3734 md_parse_option (c, arg)
3735 int c;
3736 char *arg;
3737 {
3738 return 0;
3739 }
3740
3741 void
3742 md_show_usage (stream)
3743 FILE *stream;
3744 {
3745 }
3746 \f
3747 /* We have no need to default values of symbols. */
3748
3749 symbolS *
3750 md_undefined_symbol (name)
3751 char *name;
3752 {
3753 return 0;
3754 }
3755
3756 /* Apply a fixup to an instruction. */
3757
3758 int
3759 md_apply_fix (fixP, valp)
3760 fixS *fixP;
3761 valueT *valp;
3762 {
3763 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
3764 struct hppa_fix_struct *hppa_fixP;
3765 long new_val, result = 0;
3766 unsigned int w1, w2, w, resulti;
3767
3768 hppa_fixP = (struct hppa_fix_struct *) fixP->tc_fix_data;
3769 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3770 never be "applied" (they are just markers). Likewise for
3771 R_HPPA_BEGIN_BRTAB and R_HPPA_END_BRTAB. */
3772 #ifdef OBJ_SOM
3773 if (fixP->fx_r_type == R_HPPA_ENTRY
3774 || fixP->fx_r_type == R_HPPA_EXIT
3775 || fixP->fx_r_type == R_HPPA_BEGIN_BRTAB
3776 || fixP->fx_r_type == R_HPPA_END_BRTAB
3777 || fixP->fx_r_type == R_HPPA_BEGIN_TRY)
3778 return 1;
3779
3780 /* Disgusting. We must set fx_offset ourselves -- R_HPPA_END_TRY
3781 fixups are considered not adjustable, which in turn causes
3782 adjust_reloc_syms to not set fx_offset. Ugh. */
3783 if (fixP->fx_r_type == R_HPPA_END_TRY)
3784 {
3785 fixP->fx_offset = *valp;
3786 return 1;
3787 }
3788 #endif
3789
3790 /* There should have been an HPPA specific fixup associated
3791 with the GAS fixup. */
3792 if (hppa_fixP)
3793 {
3794 unsigned long buf_wd = bfd_get_32 (stdoutput, buf);
3795 unsigned char fmt = bfd_hppa_insn2fmt (buf_wd);
3796
3797 /* If there is a symbol associated with this fixup, then it's something
3798 which will need a SOM relocation (except for some PC-relative relocs).
3799 In such cases we should treat the "val" or "addend" as zero since it
3800 will be added in as needed from fx_offset in tc_gen_reloc. */
3801 if ((fixP->fx_addsy != NULL
3802 || fixP->fx_r_type == R_HPPA_NONE)
3803 #ifdef OBJ_SOM
3804 && fmt != 32
3805 #endif
3806 )
3807 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
3808 #ifdef OBJ_SOM
3809 /* These field selectors imply that we do not want an addend. */
3810 else if (hppa_fixP->fx_r_field == e_psel
3811 || hppa_fixP->fx_r_field == e_rpsel
3812 || hppa_fixP->fx_r_field == e_lpsel
3813 || hppa_fixP->fx_r_field == e_tsel
3814 || hppa_fixP->fx_r_field == e_rtsel
3815 || hppa_fixP->fx_r_field == e_ltsel)
3816 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
3817 /* This is truely disgusting. The machine independent code blindly
3818 adds in the value of the symbol being relocated against. Damn! */
3819 else if (fmt == 32
3820 && fixP->fx_addsy != NULL
3821 && S_GET_SEGMENT (fixP->fx_addsy) != bfd_com_section_ptr)
3822 new_val = hppa_field_adjust (*valp - S_GET_VALUE (fixP->fx_addsy),
3823 0, hppa_fixP->fx_r_field);
3824 #endif
3825 else
3826 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3827
3828 /* Handle pc-relative exceptions from above. */
3829 #define arg_reloc_stub_needed(CALLER, CALLEE) \
3830 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
3831 if ((fmt == 12 || fmt == 17 || fmt == 22)
3832 && fixP->fx_addsy
3833 && fixP->fx_pcrel
3834 #ifdef OBJ_SOM
3835 && !arg_reloc_stub_needed ((long) ((obj_symbol_type *)
3836 symbol_get_bfdsym (fixP->fx_addsy))->tc_data.ap.hppa_arg_reloc,
3837 hppa_fixP->fx_arg_reloc)
3838 #endif
3839 && (((int)(*valp) > -262144 && (int)(*valp) < 262143) && fmt != 22)
3840 && S_GET_SEGMENT (fixP->fx_addsy) == hppa_fixP->segment
3841 && !(fixP->fx_subsy
3842 && S_GET_SEGMENT (fixP->fx_subsy) != hppa_fixP->segment))
3843
3844 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3845 #undef arg_reloc_stub_needed
3846
3847 switch (fmt)
3848 {
3849 /* Handle all opcodes with the 'j' operand type. */
3850 case 14:
3851 CHECK_FIELD (new_val, 8191, -8192, 0);
3852
3853 /* Mask off 14 bits to be changed. */
3854 bfd_put_32 (stdoutput,
3855 bfd_get_32 (stdoutput, buf) & 0xffffc000,
3856 buf);
3857 low_sign_unext (new_val, 14, &resulti);
3858 result = resulti;
3859 break;
3860
3861 /* Handle all opcodes with the 'k' operand type. */
3862 case 21:
3863 CHECK_FIELD (new_val, 2097152, 0, 0);
3864
3865 /* Mask off 21 bits to be changed. */
3866 bfd_put_32 (stdoutput,
3867 bfd_get_32 (stdoutput, buf) & 0xffe00000,
3868 buf);
3869 dis_assemble_21 (new_val, &resulti);
3870 result = resulti;
3871 break;
3872
3873 /* Handle all the opcodes with the 'i' operand type. */
3874 case 11:
3875 CHECK_FIELD (new_val, 1023, -1023, 0);
3876
3877 /* Mask off 11 bits to be changed. */
3878 bfd_put_32 (stdoutput,
3879 bfd_get_32 (stdoutput, buf) & 0xffff800,
3880 buf);
3881 low_sign_unext (new_val, 11, &resulti);
3882 result = resulti;
3883 break;
3884
3885 /* Handle all the opcodes with the 'w' operand type. */
3886 case 12:
3887 CHECK_FIELD (new_val, 8199, -8184, 0);
3888
3889 /* Mask off 11 bits to be changed. */
3890 sign_unext ((new_val - 8) >> 2, 12, &resulti);
3891 bfd_put_32 (stdoutput,
3892 bfd_get_32 (stdoutput, buf) & 0xffffe002,
3893 buf);
3894
3895 dis_assemble_12 (resulti, &w1, &w);
3896 result = ((w1 << 2) | w);
3897 break;
3898
3899 /* Handle some of the opcodes with the 'W' operand type. */
3900 case 17:
3901 {
3902 int distance = *valp;
3903
3904 CHECK_FIELD (new_val, 262143, -262144, 0);
3905
3906 /* If this is an absolute branch (ie no link) with an out of
3907 range target, then we want to complain. */
3908 if (fixP->fx_r_type == R_HPPA_PCREL_CALL
3909 && (distance > 262143 || distance < -262144)
3910 && (bfd_get_32 (stdoutput, buf) & 0xffe00000) == 0xe8000000)
3911 CHECK_FIELD (distance, 262143, -262144, 0);
3912
3913 /* Mask off 17 bits to be changed. */
3914 bfd_put_32 (stdoutput,
3915 bfd_get_32 (stdoutput, buf) & 0xffe0e002,
3916 buf);
3917 sign_unext ((new_val - 8) >> 2, 17, &resulti);
3918 dis_assemble_17 (resulti, &w1, &w2, &w);
3919 result = ((w2 << 2) | (w1 << 16) | w);
3920 break;
3921 }
3922
3923 case 32:
3924 result = 0;
3925 bfd_put_32 (stdoutput, new_val, buf);
3926 break;
3927
3928 default:
3929 as_bad (_("Unknown relocation encountered in md_apply_fix."));
3930 return 0;
3931 }
3932
3933 /* Insert the relocation. */
3934 bfd_put_32 (stdoutput, bfd_get_32 (stdoutput, buf) | result, buf);
3935 return 1;
3936 }
3937 else
3938 {
3939 printf (_("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n"),
3940 (unsigned int) fixP, fixP->fx_r_type);
3941 return 0;
3942 }
3943 }
3944
3945 /* Exactly what point is a PC-relative offset relative TO?
3946 On the PA, they're relative to the address of the offset. */
3947
3948 long
3949 md_pcrel_from (fixP)
3950 fixS *fixP;
3951 {
3952 return fixP->fx_where + fixP->fx_frag->fr_address;
3953 }
3954
3955 /* Return nonzero if the input line pointer is at the end of
3956 a statement. */
3957
3958 static int
3959 is_end_of_statement ()
3960 {
3961 return ((*input_line_pointer == '\n')
3962 || (*input_line_pointer == ';')
3963 || (*input_line_pointer == '!'));
3964 }
3965
3966 /* Read a number from S. The number might come in one of many forms,
3967 the most common will be a hex or decimal constant, but it could be
3968 a pre-defined register (Yuk!), or an absolute symbol.
3969
3970 Return a number or -1 for failure.
3971
3972 When parsing PA-89 FP register numbers RESULT will be
3973 the address of a structure to return information about
3974 L/R half of FP registers, store results there as appropriate.
3975
3976 pa_parse_number can not handle negative constants and will fail
3977 horribly if it is passed such a constant. */
3978
3979 static int
3980 pa_parse_number (s, result)
3981 char **s;
3982 struct pa_11_fp_reg_struct *result;
3983 {
3984 int num;
3985 char *name;
3986 char c;
3987 symbolS *sym;
3988 int status;
3989 char *p = *s;
3990
3991 /* Skip whitespace before the number. */
3992 while (*p == ' ' || *p == '\t')
3993 p = p + 1;
3994
3995 /* Store info in RESULT if requested by caller. */
3996 if (result)
3997 {
3998 result->number_part = -1;
3999 result->l_r_select = -1;
4000 }
4001 num = -1;
4002
4003 if (isdigit (*p))
4004 {
4005 /* Looks like a number. */
4006 num = 0;
4007
4008 if (*p == '0' && (*(p + 1) == 'x' || *(p + 1) == 'X'))
4009 {
4010 /* The number is specified in hex. */
4011 p += 2;
4012 while (isdigit (*p) || ((*p >= 'a') && (*p <= 'f'))
4013 || ((*p >= 'A') && (*p <= 'F')))
4014 {
4015 if (isdigit (*p))
4016 num = num * 16 + *p - '0';
4017 else if (*p >= 'a' && *p <= 'f')
4018 num = num * 16 + *p - 'a' + 10;
4019 else
4020 num = num * 16 + *p - 'A' + 10;
4021 ++p;
4022 }
4023 }
4024 else
4025 {
4026 /* The number is specified in decimal. */
4027 while (isdigit (*p))
4028 {
4029 num = num * 10 + *p - '0';
4030 ++p;
4031 }
4032 }
4033
4034 /* Store info in RESULT if requested by the caller. */
4035 if (result)
4036 {
4037 result->number_part = num;
4038
4039 if (IS_R_SELECT (p))
4040 {
4041 result->l_r_select = 1;
4042 ++p;
4043 }
4044 else if (IS_L_SELECT (p))
4045 {
4046 result->l_r_select = 0;
4047 ++p;
4048 }
4049 else
4050 result->l_r_select = 0;
4051 }
4052 }
4053 else if (*p == '%')
4054 {
4055 /* The number might be a predefined register. */
4056 num = 0;
4057 name = p;
4058 p++;
4059 c = *p;
4060 /* Tege hack: Special case for general registers as the general
4061 code makes a binary search with case translation, and is VERY
4062 slow. */
4063 if (c == 'r')
4064 {
4065 p++;
4066 if (*p == 'e' && *(p + 1) == 't'
4067 && (*(p + 2) == '0' || *(p + 2) == '1'))
4068 {
4069 p += 2;
4070 num = *p - '0' + 28;
4071 p++;
4072 }
4073 else if (*p == 'p')
4074 {
4075 num = 2;
4076 p++;
4077 }
4078 else if (!isdigit (*p))
4079 {
4080 if (print_errors)
4081 as_bad (_("Undefined register: '%s'."), name);
4082 num = -1;
4083 }
4084 else
4085 {
4086 do
4087 num = num * 10 + *p++ - '0';
4088 while (isdigit (*p));
4089 }
4090 }
4091 else
4092 {
4093 /* Do a normal register search. */
4094 while (is_part_of_name (c))
4095 {
4096 p = p + 1;
4097 c = *p;
4098 }
4099 *p = 0;
4100 status = reg_name_search (name);
4101 if (status >= 0)
4102 num = status;
4103 else
4104 {
4105 if (print_errors)
4106 as_bad (_("Undefined register: '%s'."), name);
4107 num = -1;
4108 }
4109 *p = c;
4110 }
4111
4112 /* Store info in RESULT if requested by caller. */
4113 if (result)
4114 {
4115 result->number_part = num;
4116 if (IS_R_SELECT (p - 1))
4117 result->l_r_select = 1;
4118 else if (IS_L_SELECT (p - 1))
4119 result->l_r_select = 0;
4120 else
4121 result->l_r_select = 0;
4122 }
4123 }
4124 else
4125 {
4126 /* And finally, it could be a symbol in the absolute section which
4127 is effectively a constant. */
4128 num = 0;
4129 name = p;
4130 c = *p;
4131 while (is_part_of_name (c))
4132 {
4133 p = p + 1;
4134 c = *p;
4135 }
4136 *p = 0;
4137 if ((sym = symbol_find (name)) != NULL)
4138 {
4139 if (S_GET_SEGMENT (sym) == &bfd_abs_section)
4140 num = S_GET_VALUE (sym);
4141 else
4142 {
4143 if (print_errors)
4144 as_bad (_("Non-absolute symbol: '%s'."), name);
4145 num = -1;
4146 }
4147 }
4148 else
4149 {
4150 /* There is where we'd come for an undefined symbol
4151 or for an empty string. For an empty string we
4152 will return zero. That's a concession made for
4153 compatability with the braindamaged HP assemblers. */
4154 if (*name == 0)
4155 num = 0;
4156 else
4157 {
4158 if (print_errors)
4159 as_bad (_("Undefined absolute constant: '%s'."), name);
4160 num = -1;
4161 }
4162 }
4163 *p = c;
4164
4165 /* Store info in RESULT if requested by caller. */
4166 if (result)
4167 {
4168 result->number_part = num;
4169 if (IS_R_SELECT (p - 1))
4170 result->l_r_select = 1;
4171 else if (IS_L_SELECT (p - 1))
4172 result->l_r_select = 0;
4173 else
4174 result->l_r_select = 0;
4175 }
4176 }
4177
4178 *s = p;
4179 return num;
4180 }
4181
4182 #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
4183
4184 /* Given NAME, find the register number associated with that name, return
4185 the integer value associated with the given name or -1 on failure. */
4186
4187 static int
4188 reg_name_search (name)
4189 char *name;
4190 {
4191 int middle, low, high;
4192 int cmp;
4193
4194 low = 0;
4195 high = REG_NAME_CNT - 1;
4196
4197 do
4198 {
4199 middle = (low + high) / 2;
4200 cmp = strcasecmp (name, pre_defined_registers[middle].name);
4201 if (cmp < 0)
4202 high = middle - 1;
4203 else if (cmp > 0)
4204 low = middle + 1;
4205 else
4206 return pre_defined_registers[middle].value;
4207 }
4208 while (low <= high);
4209
4210 return -1;
4211 }
4212
4213
4214 /* Return nonzero if the given INSN and L/R information will require
4215 a new PA-1.1 opcode. */
4216
4217 static int
4218 need_pa11_opcode (insn, result)
4219 struct pa_it *insn;
4220 struct pa_11_fp_reg_struct *result;
4221 {
4222 if (result->l_r_select == 1 && !(insn->fpof1 == DBL && insn->fpof2 == DBL))
4223 {
4224 /* If this instruction is specific to a particular architecture,
4225 then set a new architecture. */
4226 if (bfd_get_mach (stdoutput) < pa11)
4227 {
4228 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, pa11))
4229 as_warn (_("could not update architecture and machine"));
4230 }
4231 return TRUE;
4232 }
4233 else
4234 return FALSE;
4235 }
4236
4237 /* Parse a condition for a fcmp instruction. Return the numerical
4238 code associated with the condition. */
4239
4240 static int
4241 pa_parse_fp_cmp_cond (s)
4242 char **s;
4243 {
4244 int cond, i;
4245
4246 cond = 0;
4247
4248 for (i = 0; i < 32; i++)
4249 {
4250 if (strncasecmp (*s, fp_cond_map[i].string,
4251 strlen (fp_cond_map[i].string)) == 0)
4252 {
4253 cond = fp_cond_map[i].cond;
4254 *s += strlen (fp_cond_map[i].string);
4255 /* If not a complete match, back up the input string and
4256 report an error. */
4257 if (**s != ' ' && **s != '\t')
4258 {
4259 *s -= strlen (fp_cond_map[i].string);
4260 break;
4261 }
4262 while (**s == ' ' || **s == '\t')
4263 *s = *s + 1;
4264 return cond;
4265 }
4266 }
4267
4268 as_bad (_("Invalid FP Compare Condition: %s"), *s);
4269
4270 /* Advance over the bogus completer. */
4271 while (**s != ',' && **s != ' ' && **s != '\t')
4272 *s += 1;
4273
4274 return 0;
4275 }
4276
4277
4278 /* Parse an FP operand format completer returning the completer
4279 type. */
4280
4281 static fp_operand_format
4282 pa_parse_fp_format (s)
4283 char **s;
4284 {
4285 int format;
4286
4287 format = SGL;
4288 if (**s == ',')
4289 {
4290 *s += 1;
4291 if (strncasecmp (*s, "sgl", 3) == 0)
4292 {
4293 format = SGL;
4294 *s += 4;
4295 }
4296 else if (strncasecmp (*s, "dbl", 3) == 0)
4297 {
4298 format = DBL;
4299 *s += 4;
4300 }
4301 else if (strncasecmp (*s, "quad", 4) == 0)
4302 {
4303 format = QUAD;
4304 *s += 5;
4305 }
4306 else
4307 {
4308 format = ILLEGAL_FMT;
4309 as_bad (_("Invalid FP Operand Format: %3s"), *s);
4310 }
4311 }
4312
4313 return format;
4314 }
4315
4316 /* Convert from a selector string into a selector type. */
4317
4318 static int
4319 pa_chk_field_selector (str)
4320 char **str;
4321 {
4322 int middle, low, high;
4323 int cmp;
4324 char name[4];
4325
4326 /* Read past any whitespace. */
4327 /* FIXME: should we read past newlines and formfeeds??? */
4328 while (**str == ' ' || **str == '\t' || **str == '\n' || **str == '\f')
4329 *str = *str + 1;
4330
4331 if ((*str)[1] == '\'' || (*str)[1] == '%')
4332 name[0] = tolower ((*str)[0]),
4333 name[1] = 0;
4334 else if ((*str)[2] == '\'' || (*str)[2] == '%')
4335 name[0] = tolower ((*str)[0]),
4336 name[1] = tolower ((*str)[1]),
4337 name[2] = 0;
4338 else if ((*str)[3] == '\'' || (*str)[3] == '%')
4339 name[0] = tolower ((*str)[0]),
4340 name[1] = tolower ((*str)[1]),
4341 name[2] = tolower ((*str)[2]),
4342 name[3] = 0;
4343 else
4344 return e_fsel;
4345
4346 low = 0;
4347 high = sizeof (selector_table) / sizeof (struct selector_entry) - 1;
4348
4349 do
4350 {
4351 middle = (low + high) / 2;
4352 cmp = strcmp (name, selector_table[middle].prefix);
4353 if (cmp < 0)
4354 high = middle - 1;
4355 else if (cmp > 0)
4356 low = middle + 1;
4357 else
4358 {
4359 *str += strlen (name) + 1;
4360 #ifndef OBJ_SOM
4361 if (selector_table[middle].field_selector == e_nsel)
4362 return e_fsel;
4363 #endif
4364 return selector_table[middle].field_selector;
4365 }
4366 }
4367 while (low <= high);
4368
4369 return e_fsel;
4370 }
4371
4372 /* Mark (via expr_end) the end of an expression (I think). FIXME. */
4373
4374 static int
4375 get_expression (str)
4376 char *str;
4377 {
4378 char *save_in;
4379 asection *seg;
4380
4381 save_in = input_line_pointer;
4382 input_line_pointer = str;
4383 seg = expression (&the_insn.exp);
4384 if (!(seg == absolute_section
4385 || seg == undefined_section
4386 || SEG_NORMAL (seg)))
4387 {
4388 as_warn (_("Bad segment in expression."));
4389 expr_end = input_line_pointer;
4390 input_line_pointer = save_in;
4391 return 1;
4392 }
4393 expr_end = input_line_pointer;
4394 input_line_pointer = save_in;
4395 return 0;
4396 }
4397
4398 /* Mark (via expr_end) the end of an absolute expression. FIXME. */
4399 static int
4400 pa_get_absolute_expression (insn, strp)
4401 struct pa_it *insn;
4402 char **strp;
4403 {
4404 char *save_in;
4405
4406 insn->field_selector = pa_chk_field_selector (strp);
4407 save_in = input_line_pointer;
4408 input_line_pointer = *strp;
4409 expression (&insn->exp);
4410 /* This is not perfect, but is a huge improvement over doing nothing.
4411
4412 The PA assembly syntax is ambigious in a variety of ways. Consider
4413 this string "4 %r5" Is that the number 4 followed by the register
4414 r5, or is that 4 MOD 5?
4415
4416 If we get a modulo expresion When looking for an absolute, we try
4417 again cutting off the input string at the first whitespace character. */
4418 if (insn->exp.X_op == O_modulus)
4419 {
4420 char *s, c;
4421 int retval;
4422
4423 input_line_pointer = *strp;
4424 s = *strp;
4425 while (*s != ',' && *s != ' ' && *s != '\t')
4426 s++;
4427
4428 c = *s;
4429 *s = 0;
4430
4431 retval = pa_get_absolute_expression (insn, strp);
4432
4433 input_line_pointer = save_in;
4434 *s = c;
4435 return evaluate_absolute (insn);
4436 }
4437 /* When in strict mode we have a non-match, fix up the pointers
4438 and return to our caller. */
4439 if (insn->exp.X_op != O_constant && strict)
4440 {
4441 expr_end = input_line_pointer;
4442 input_line_pointer = save_in;
4443 return 0;
4444 }
4445 if (insn->exp.X_op != O_constant)
4446 {
4447 as_bad (_("Bad segment (should be absolute)."));
4448 expr_end = input_line_pointer;
4449 input_line_pointer = save_in;
4450 return 0;
4451 }
4452 expr_end = input_line_pointer;
4453 input_line_pointer = save_in;
4454 return evaluate_absolute (insn);
4455 }
4456
4457 /* Evaluate an absolute expression EXP which may be modified by
4458 the selector FIELD_SELECTOR. Return the value of the expression. */
4459 static int
4460 evaluate_absolute (insn)
4461 struct pa_it *insn;
4462 {
4463 int value;
4464 expressionS exp;
4465 int field_selector = insn->field_selector;
4466
4467 exp = insn->exp;
4468 value = exp.X_add_number;
4469
4470 switch (field_selector)
4471 {
4472 /* No change. */
4473 case e_fsel:
4474 break;
4475
4476 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
4477 case e_lssel:
4478 if (value & 0x00000400)
4479 value += 0x800;
4480 value = (value & 0xfffff800) >> 11;
4481 break;
4482
4483 /* Sign extend from bit 21. */
4484 case e_rssel:
4485 if (value & 0x00000400)
4486 value |= 0xfffff800;
4487 else
4488 value &= 0x7ff;
4489 break;
4490
4491 /* Arithmetic shift right 11 bits. */
4492 case e_lsel:
4493 value = (value & 0xfffff800) >> 11;
4494 break;
4495
4496 /* Set bits 0-20 to zero. */
4497 case e_rsel:
4498 value = value & 0x7ff;
4499 break;
4500
4501 /* Add 0x800 and arithmetic shift right 11 bits. */
4502 case e_ldsel:
4503 value += 0x800;
4504 value = (value & 0xfffff800) >> 11;
4505 break;
4506
4507 /* Set bitgs 0-21 to one. */
4508 case e_rdsel:
4509 value |= 0xfffff800;
4510 break;
4511
4512 #define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
4513 case e_rrsel:
4514 value = (RSEL_ROUND (value) & 0x7ff) + (value - RSEL_ROUND (value));
4515 break;
4516
4517 case e_lrsel:
4518 value = (RSEL_ROUND (value) >> 11) & 0x1fffff;
4519 break;
4520 #undef RSEL_ROUND
4521
4522 default:
4523 BAD_CASE (field_selector);
4524 break;
4525 }
4526 return value;
4527 }
4528
4529 /* Given an argument location specification return the associated
4530 argument location number. */
4531
4532 static unsigned int
4533 pa_build_arg_reloc (type_name)
4534 char *type_name;
4535 {
4536
4537 if (strncasecmp (type_name, "no", 2) == 0)
4538 return 0;
4539 if (strncasecmp (type_name, "gr", 2) == 0)
4540 return 1;
4541 else if (strncasecmp (type_name, "fr", 2) == 0)
4542 return 2;
4543 else if (strncasecmp (type_name, "fu", 2) == 0)
4544 return 3;
4545 else
4546 as_bad (_("Invalid argument location: %s\n"), type_name);
4547
4548 return 0;
4549 }
4550
4551 /* Encode and return an argument relocation specification for
4552 the given register in the location specified by arg_reloc. */
4553
4554 static unsigned int
4555 pa_align_arg_reloc (reg, arg_reloc)
4556 unsigned int reg;
4557 unsigned int arg_reloc;
4558 {
4559 unsigned int new_reloc;
4560
4561 new_reloc = arg_reloc;
4562 switch (reg)
4563 {
4564 case 0:
4565 new_reloc <<= 8;
4566 break;
4567 case 1:
4568 new_reloc <<= 6;
4569 break;
4570 case 2:
4571 new_reloc <<= 4;
4572 break;
4573 case 3:
4574 new_reloc <<= 2;
4575 break;
4576 default:
4577 as_bad (_("Invalid argument description: %d"), reg);
4578 }
4579
4580 return new_reloc;
4581 }
4582
4583 /* Parse a PA nullification completer (,n). Return nonzero if the
4584 completer was found; return zero if no completer was found. */
4585
4586 static int
4587 pa_parse_nullif (s)
4588 char **s;
4589 {
4590 int nullif;
4591
4592 nullif = 0;
4593 if (**s == ',')
4594 {
4595 *s = *s + 1;
4596 if (strncasecmp (*s, "n", 1) == 0)
4597 nullif = 1;
4598 else
4599 {
4600 as_bad (_("Invalid Nullification: (%c)"), **s);
4601 nullif = 0;
4602 }
4603 *s = *s + 1;
4604 }
4605
4606 return nullif;
4607 }
4608
4609 /* Parse a non-negated compare/subtract completer returning the
4610 number (for encoding in instrutions) of the given completer.
4611
4612 ISBRANCH specifies whether or not this is parsing a condition
4613 completer for a branch (vs a nullification completer for a
4614 computational instruction. */
4615
4616 static int
4617 pa_parse_nonneg_cmpsub_cmpltr (s, isbranch)
4618 char **s;
4619 int isbranch;
4620 {
4621 int cmpltr;
4622 char *name = *s + 1;
4623 char c;
4624 char *save_s = *s;
4625 int nullify = 0;
4626
4627 cmpltr = 0;
4628 if (**s == ',')
4629 {
4630 *s += 1;
4631 while (**s != ',' && **s != ' ' && **s != '\t')
4632 *s += 1;
4633 c = **s;
4634 **s = 0x00;
4635
4636
4637 if (strcmp (name, "=") == 0)
4638 {
4639 cmpltr = 1;
4640 }
4641 else if (strcmp (name, "<") == 0)
4642 {
4643 cmpltr = 2;
4644 }
4645 else if (strcmp (name, "<=") == 0)
4646 {
4647 cmpltr = 3;
4648 }
4649 else if (strcmp (name, "<<") == 0)
4650 {
4651 cmpltr = 4;
4652 }
4653 else if (strcmp (name, "<<=") == 0)
4654 {
4655 cmpltr = 5;
4656 }
4657 else if (strcasecmp (name, "sv") == 0)
4658 {
4659 cmpltr = 6;
4660 }
4661 else if (strcasecmp (name, "od") == 0)
4662 {
4663 cmpltr = 7;
4664 }
4665 /* If we have something like addb,n then there is no condition
4666 completer. */
4667 else if (strcasecmp (name, "n") == 0 && isbranch)
4668 {
4669 cmpltr = 0;
4670 nullify = 1;
4671 }
4672 else
4673 {
4674 cmpltr = -1;
4675 }
4676 **s = c;
4677 }
4678
4679 /* Reset pointers if this was really a ,n for a branch instruction. */
4680 if (nullify)
4681 *s = save_s;
4682
4683
4684 return cmpltr;
4685 }
4686
4687 /* Parse a negated compare/subtract completer returning the
4688 number (for encoding in instrutions) of the given completer.
4689
4690 ISBRANCH specifies whether or not this is parsing a condition
4691 completer for a branch (vs a nullification completer for a
4692 computational instruction. */
4693
4694 static int
4695 pa_parse_neg_cmpsub_cmpltr (s, isbranch)
4696 char **s;
4697 int isbranch;
4698 {
4699 int cmpltr;
4700 char *name = *s + 1;
4701 char c;
4702 char *save_s = *s;
4703 int nullify = 0;
4704
4705 cmpltr = 0;
4706 if (**s == ',')
4707 {
4708 *s += 1;
4709 while (**s != ',' && **s != ' ' && **s != '\t')
4710 *s += 1;
4711 c = **s;
4712 **s = 0x00;
4713
4714
4715 if (strcasecmp (name, "tr") == 0)
4716 {
4717 cmpltr = 0;
4718 }
4719 else if (strcmp (name, "<>") == 0)
4720 {
4721 cmpltr = 1;
4722 }
4723 else if (strcmp (name, ">=") == 0)
4724 {
4725 cmpltr = 2;
4726 }
4727 else if (strcmp (name, ">") == 0)
4728 {
4729 cmpltr = 3;
4730 }
4731 else if (strcmp (name, ">>=") == 0)
4732 {
4733 cmpltr = 4;
4734 }
4735 else if (strcmp (name, ">>") == 0)
4736 {
4737 cmpltr = 5;
4738 }
4739 else if (strcasecmp (name, "nsv") == 0)
4740 {
4741 cmpltr = 6;
4742 }
4743 else if (strcasecmp (name, "ev") == 0)
4744 {
4745 cmpltr = 7;
4746 }
4747 /* If we have something like addb,n then there is no condition
4748 completer. */
4749 else if (strcasecmp (name, "n") == 0 && isbranch)
4750 {
4751 cmpltr = 0;
4752 nullify = 1;
4753 }
4754 else
4755 {
4756 cmpltr = -1;
4757 }
4758 **s = c;
4759 }
4760
4761 /* Reset pointers if this was really a ,n for a branch instruction. */
4762 if (nullify)
4763 *s = save_s;
4764
4765
4766 return cmpltr;
4767 }
4768
4769
4770 /* Parse a non-negated addition completer returning the number
4771 (for encoding in instrutions) of the given completer.
4772
4773 ISBRANCH specifies whether or not this is parsing a condition
4774 completer for a branch (vs a nullification completer for a
4775 computational instruction. */
4776
4777 static int
4778 pa_parse_nonneg_add_cmpltr (s, isbranch)
4779 char **s;
4780 int isbranch;
4781 {
4782 int cmpltr;
4783 char *name = *s + 1;
4784 char c;
4785 char *save_s = *s;
4786
4787 cmpltr = 0;
4788 if (**s == ',')
4789 {
4790 *s += 1;
4791 while (**s != ',' && **s != ' ' && **s != '\t')
4792 *s += 1;
4793 c = **s;
4794 **s = 0x00;
4795 if (strcmp (name, "=") == 0)
4796 {
4797 cmpltr = 1;
4798 }
4799 else if (strcmp (name, "<") == 0)
4800 {
4801 cmpltr = 2;
4802 }
4803 else if (strcmp (name, "<=") == 0)
4804 {
4805 cmpltr = 3;
4806 }
4807 else if (strcasecmp (name, "nuv") == 0)
4808 {
4809 cmpltr = 4;
4810 }
4811 else if (strcasecmp (name, "znv") == 0)
4812 {
4813 cmpltr = 5;
4814 }
4815 else if (strcasecmp (name, "sv") == 0)
4816 {
4817 cmpltr = 6;
4818 }
4819 else if (strcasecmp (name, "od") == 0)
4820 {
4821 cmpltr = 7;
4822 }
4823 /* If we have something like addb,n then there is no condition
4824 completer. */
4825 else if (strcasecmp (name, "n") == 0 && isbranch)
4826 {
4827 cmpltr = 0;
4828 }
4829 else
4830 {
4831 cmpltr = -1;
4832 }
4833 **s = c;
4834 }
4835
4836 /* Reset pointers if this was really a ,n for a branch instruction. */
4837 if (cmpltr == 0 && *name == 'n' && isbranch)
4838 *s = save_s;
4839
4840 return cmpltr;
4841 }
4842
4843 /* Parse a negated addition completer returning the number
4844 (for encoding in instrutions) of the given completer.
4845
4846 ISBRANCH specifies whether or not this is parsing a condition
4847 completer for a branch (vs a nullification completer for a
4848 computational instruction). */
4849
4850 static int
4851 pa_parse_neg_add_cmpltr (s, isbranch)
4852 char **s;
4853 int isbranch;
4854 {
4855 int cmpltr;
4856 char *name = *s + 1;
4857 char c;
4858 char *save_s = *s;
4859
4860 cmpltr = 0;
4861 if (**s == ',')
4862 {
4863 *s += 1;
4864 while (**s != ',' && **s != ' ' && **s != '\t')
4865 *s += 1;
4866 c = **s;
4867 **s = 0x00;
4868 if (strcasecmp (name, "tr") == 0)
4869 {
4870 cmpltr = 0;
4871 }
4872 else if (strcmp (name, "<>") == 0)
4873 {
4874 cmpltr = 1;
4875 }
4876 else if (strcmp (name, ">=") == 0)
4877 {
4878 cmpltr = 2;
4879 }
4880 else if (strcmp (name, ">") == 0)
4881 {
4882 cmpltr = 3;
4883 }
4884 else if (strcasecmp (name, "uv") == 0)
4885 {
4886 cmpltr = 4;
4887 }
4888 else if (strcasecmp (name, "vnz") == 0)
4889 {
4890 cmpltr = 5;
4891 }
4892 else if (strcasecmp (name, "nsv") == 0)
4893 {
4894 cmpltr = 6;
4895 }
4896 else if (strcasecmp (name, "ev") == 0)
4897 {
4898 cmpltr = 7;
4899 }
4900 /* If we have something like addb,n then there is no condition
4901 completer. */
4902 else if (strcasecmp (name, "n") == 0 && isbranch)
4903 {
4904 cmpltr = 0;
4905 }
4906 else
4907 {
4908 cmpltr = -1;
4909 }
4910 **s = c;
4911 }
4912
4913 /* Reset pointers if this was really a ,n for a branch instruction. */
4914 if (cmpltr == 0 && *name == 'n' && isbranch)
4915 *s = save_s;
4916
4917 return cmpltr;
4918 }
4919
4920 #ifdef OBJ_SOM
4921 /* Handle an alignment directive. Special so that we can update the
4922 alignment of the subspace if necessary. */
4923 static void
4924 pa_align (bytes)
4925 {
4926 /* We must have a valid space and subspace. */
4927 pa_check_current_space_and_subspace ();
4928
4929 /* Let the generic gas code do most of the work. */
4930 s_align_bytes (bytes);
4931
4932 /* If bytes is a power of 2, then update the current subspace's
4933 alignment if necessary. */
4934 if (log2 (bytes) != -1)
4935 record_alignment (current_subspace->ssd_seg, log2 (bytes));
4936 }
4937 #endif
4938
4939 /* Handle a .BLOCK type pseudo-op. */
4940
4941 static void
4942 pa_block (z)
4943 int z;
4944 {
4945 char *p;
4946 long int temp_fill;
4947 unsigned int temp_size;
4948 unsigned int i;
4949
4950 #ifdef OBJ_SOM
4951 /* We must have a valid space and subspace. */
4952 pa_check_current_space_and_subspace ();
4953 #endif
4954
4955 temp_size = get_absolute_expression ();
4956
4957 /* Always fill with zeros, that's what the HP assembler does. */
4958 temp_fill = 0;
4959
4960 p = frag_var (rs_fill, (int) temp_size, (int) temp_size,
4961 (relax_substateT) 0, (symbolS *) 0, (offsetT) 1, NULL);
4962 memset (p, 0, temp_size);
4963
4964 /* Convert 2 bytes at a time. */
4965
4966 for (i = 0; i < temp_size; i += 2)
4967 {
4968 md_number_to_chars (p + i,
4969 (valueT) temp_fill,
4970 (int) ((temp_size - i) > 2 ? 2 : (temp_size - i)));
4971 }
4972
4973 pa_undefine_label ();
4974 demand_empty_rest_of_line ();
4975 }
4976
4977 /* Handle a .begin_brtab and .end_brtab pseudo-op. */
4978
4979 static void
4980 pa_brtab (begin)
4981 int begin;
4982 {
4983
4984 #ifdef OBJ_SOM
4985 /* The BRTAB relocations are only availble in SOM (to denote
4986 the beginning and end of branch tables). */
4987 char *where = frag_more (0);
4988
4989 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4990 NULL, (offsetT) 0, NULL,
4991 0, begin ? R_HPPA_BEGIN_BRTAB : R_HPPA_END_BRTAB,
4992 e_fsel, 0, 0, NULL);
4993 #endif
4994
4995 demand_empty_rest_of_line ();
4996 }
4997
4998 /* Handle a .begin_try and .end_try pseudo-op. */
4999
5000 static void
5001 pa_try (begin)
5002 int begin;
5003 {
5004 #ifdef OBJ_SOM
5005 expressionS exp;
5006 char *where = frag_more (0);
5007
5008 if (! begin)
5009 expression (&exp);
5010
5011 /* The TRY relocations are only availble in SOM (to denote
5012 the beginning and end of exception handling regions). */
5013
5014 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
5015 NULL, (offsetT) 0, begin ? NULL : &exp,
5016 0, begin ? R_HPPA_BEGIN_TRY : R_HPPA_END_TRY,
5017 e_fsel, 0, 0, NULL);
5018 #endif
5019
5020 demand_empty_rest_of_line ();
5021 }
5022
5023 /* Handle a .CALL pseudo-op. This involves storing away information
5024 about where arguments are to be found so the linker can detect
5025 (and correct) argument location mismatches between caller and callee. */
5026
5027 static void
5028 pa_call (unused)
5029 int unused;
5030 {
5031 #ifdef OBJ_SOM
5032 /* We must have a valid space and subspace. */
5033 pa_check_current_space_and_subspace ();
5034 #endif
5035
5036 pa_call_args (&last_call_desc);
5037 demand_empty_rest_of_line ();
5038 }
5039
5040 /* Do the dirty work of building a call descriptor which describes
5041 where the caller placed arguments to a function call. */
5042
5043 static void
5044 pa_call_args (call_desc)
5045 struct call_desc *call_desc;
5046 {
5047 char *name, c, *p;
5048 unsigned int temp, arg_reloc;
5049
5050 while (!is_end_of_statement ())
5051 {
5052 name = input_line_pointer;
5053 c = get_symbol_end ();
5054 /* Process a source argument. */
5055 if ((strncasecmp (name, "argw", 4) == 0))
5056 {
5057 temp = atoi (name + 4);
5058 p = input_line_pointer;
5059 *p = c;
5060 input_line_pointer++;
5061 name = input_line_pointer;
5062 c = get_symbol_end ();
5063 arg_reloc = pa_build_arg_reloc (name);
5064 call_desc->arg_reloc |= pa_align_arg_reloc (temp, arg_reloc);
5065 }
5066 /* Process a return value. */
5067 else if ((strncasecmp (name, "rtnval", 6) == 0))
5068 {
5069 p = input_line_pointer;
5070 *p = c;
5071 input_line_pointer++;
5072 name = input_line_pointer;
5073 c = get_symbol_end ();
5074 arg_reloc = pa_build_arg_reloc (name);
5075 call_desc->arg_reloc |= (arg_reloc & 0x3);
5076 }
5077 else
5078 {
5079 as_bad (_("Invalid .CALL argument: %s"), name);
5080 }
5081 p = input_line_pointer;
5082 *p = c;
5083 if (!is_end_of_statement ())
5084 input_line_pointer++;
5085 }
5086 }
5087
5088 /* Return TRUE if FRAG1 and FRAG2 are the same. */
5089
5090 static int
5091 is_same_frag (frag1, frag2)
5092 fragS *frag1;
5093 fragS *frag2;
5094 {
5095
5096 if (frag1 == NULL)
5097 return (FALSE);
5098 else if (frag2 == NULL)
5099 return (FALSE);
5100 else if (frag1 == frag2)
5101 return (TRUE);
5102 else if (frag2->fr_type == rs_fill && frag2->fr_fix == 0)
5103 return (is_same_frag (frag1, frag2->fr_next));
5104 else
5105 return (FALSE);
5106 }
5107
5108 #ifdef OBJ_ELF
5109 /* Build an entry in the UNWIND subspace from the given function
5110 attributes in CALL_INFO. This is not needed for SOM as using
5111 R_ENTRY and R_EXIT relocations allow the linker to handle building
5112 of the unwind spaces. */
5113
5114 static void
5115 pa_build_unwind_subspace (call_info)
5116 struct call_info *call_info;
5117 {
5118 char *unwind;
5119 asection *seg, *save_seg;
5120 asymbol *sym;
5121 subsegT subseg, save_subseg;
5122 int i, reloc;
5123 char c, *p;
5124
5125 if (now_seg != text_section)
5126 return;
5127
5128 if (bfd_get_arch_info (stdoutput)->bits_per_address == 32)
5129 reloc = R_PARISC_DIR32;
5130 else
5131 reloc = R_PARISC_SEGREL32;
5132
5133 /* Get into the right seg/subseg. This may involve creating
5134 the seg the first time through. Make sure to have the
5135 old seg/subseg so that we can reset things when we are done. */
5136 seg = bfd_get_section_by_name (stdoutput, UNWIND_SECTION_NAME);
5137 if (seg == ASEC_NULL)
5138 {
5139 seg = bfd_make_section_old_way (stdoutput, UNWIND_SECTION_NAME);
5140 bfd_set_section_flags (stdoutput, seg,
5141 SEC_READONLY | SEC_HAS_CONTENTS
5142 | SEC_LOAD | SEC_RELOC | SEC_ALLOC | SEC_DATA);
5143 bfd_set_section_alignment (stdoutput, seg, 2);
5144 }
5145
5146 save_seg = now_seg;
5147 save_subseg = now_subseg;
5148 subseg_set (seg, 0);
5149
5150
5151 /* Get some space to hold relocation information for the unwind
5152 descriptor. */
5153 p = frag_more (4);
5154 md_number_to_chars (p, 0, 4);
5155
5156 /* Relocation info. for start offset of the function. */
5157 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
5158 call_info->start_symbol, (offsetT) 0,
5159 (expressionS *) NULL, 0, reloc,
5160 e_fsel, 32, 0, NULL);
5161
5162 p = frag_more (4);
5163 md_number_to_chars (p, 0, 4);
5164
5165 /* Relocation info. for end offset of the function.
5166
5167 Because we allow reductions of 32bit relocations for ELF, this will be
5168 reduced to section_sym + offset which avoids putting the temporary
5169 symbol into the symbol table. It (should) end up giving the same
5170 value as call_info->start_symbol + function size once the linker is
5171 finished with its work. */
5172
5173 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
5174 call_info->end_symbol, (offsetT) 0,
5175 (expressionS *) NULL, 0, reloc,
5176 e_fsel, 32, 0, NULL);
5177
5178 /* Dump it. */
5179 unwind = (char *) &call_info->ci_unwind;
5180 for (i = 8; i < sizeof (struct unwind_table); i++)
5181 {
5182 c = *(unwind + i);
5183 {
5184 FRAG_APPEND_1_CHAR (c);
5185 }
5186 }
5187
5188 /* Return back to the original segment/subsegment. */
5189 subseg_set (save_seg, save_subseg);
5190 }
5191 #endif
5192
5193 /* Process a .CALLINFO pseudo-op. This information is used later
5194 to build unwind descriptors and maybe one day to support
5195 .ENTER and .LEAVE. */
5196
5197 static void
5198 pa_callinfo (unused)
5199 int unused;
5200 {
5201 char *name, c, *p;
5202 int temp;
5203
5204 #ifdef OBJ_SOM
5205 /* We must have a valid space and subspace. */
5206 pa_check_current_space_and_subspace ();
5207 #endif
5208
5209 /* .CALLINFO must appear within a procedure definition. */
5210 if (!within_procedure)
5211 as_bad (_(".callinfo is not within a procedure definition"));
5212
5213 /* Mark the fact that we found the .CALLINFO for the
5214 current procedure. */
5215 callinfo_found = TRUE;
5216
5217 /* Iterate over the .CALLINFO arguments. */
5218 while (!is_end_of_statement ())
5219 {
5220 name = input_line_pointer;
5221 c = get_symbol_end ();
5222 /* Frame size specification. */
5223 if ((strncasecmp (name, "frame", 5) == 0))
5224 {
5225 p = input_line_pointer;
5226 *p = c;
5227 input_line_pointer++;
5228 temp = get_absolute_expression ();
5229 if ((temp & 0x3) != 0)
5230 {
5231 as_bad (_("FRAME parameter must be a multiple of 8: %d\n"), temp);
5232 temp = 0;
5233 }
5234
5235 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
5236 last_call_info->ci_unwind.descriptor.frame_size = temp / 8;
5237
5238 }
5239 /* Entry register (GR, GR and SR) specifications. */
5240 else if ((strncasecmp (name, "entry_gr", 8) == 0))
5241 {
5242 p = input_line_pointer;
5243 *p = c;
5244 input_line_pointer++;
5245 temp = get_absolute_expression ();
5246 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
5247 even though %r19 is caller saved. I think this is a bug in
5248 the HP assembler, and we are not going to emulate it. */
5249 if (temp < 3 || temp > 18)
5250 as_bad (_("Value for ENTRY_GR must be in the range 3..18\n"));
5251 last_call_info->ci_unwind.descriptor.entry_gr = temp - 2;
5252 }
5253 else if ((strncasecmp (name, "entry_fr", 8) == 0))
5254 {
5255 p = input_line_pointer;
5256 *p = c;
5257 input_line_pointer++;
5258 temp = get_absolute_expression ();
5259 /* Similarly the HP assembler takes 31 as the high bound even
5260 though %fr21 is the last callee saved floating point register. */
5261 if (temp < 12 || temp > 21)
5262 as_bad (_("Value for ENTRY_FR must be in the range 12..21\n"));
5263 last_call_info->ci_unwind.descriptor.entry_fr = temp - 11;
5264 }
5265 else if ((strncasecmp (name, "entry_sr", 8) == 0))
5266 {
5267 p = input_line_pointer;
5268 *p = c;
5269 input_line_pointer++;
5270 temp = get_absolute_expression ();
5271 if (temp != 3)
5272 as_bad (_("Value for ENTRY_SR must be 3\n"));
5273 }
5274 /* Note whether or not this function performs any calls. */
5275 else if ((strncasecmp (name, "calls", 5) == 0) ||
5276 (strncasecmp (name, "caller", 6) == 0))
5277 {
5278 p = input_line_pointer;
5279 *p = c;
5280 }
5281 else if ((strncasecmp (name, "no_calls", 8) == 0))
5282 {
5283 p = input_line_pointer;
5284 *p = c;
5285 }
5286 /* Should RP be saved into the stack. */
5287 else if ((strncasecmp (name, "save_rp", 7) == 0))
5288 {
5289 p = input_line_pointer;
5290 *p = c;
5291 last_call_info->ci_unwind.descriptor.save_rp = 1;
5292 }
5293 /* Likewise for SP. */
5294 else if ((strncasecmp (name, "save_sp", 7) == 0))
5295 {
5296 p = input_line_pointer;
5297 *p = c;
5298 last_call_info->ci_unwind.descriptor.save_sp = 1;
5299 }
5300 /* Is this an unwindable procedure. If so mark it so
5301 in the unwind descriptor. */
5302 else if ((strncasecmp (name, "no_unwind", 9) == 0))
5303 {
5304 p = input_line_pointer;
5305 *p = c;
5306 last_call_info->ci_unwind.descriptor.cannot_unwind = 1;
5307 }
5308 /* Is this an interrupt routine. If so mark it in the
5309 unwind descriptor. */
5310 else if ((strncasecmp (name, "hpux_int", 7) == 0))
5311 {
5312 p = input_line_pointer;
5313 *p = c;
5314 last_call_info->ci_unwind.descriptor.hpux_interrupt_marker = 1;
5315 }
5316 /* Is this a millicode routine. "millicode" isn't in my
5317 assembler manual, but my copy is old. The HP assembler
5318 accepts it, and there's a place in the unwind descriptor
5319 to drop the information, so we'll accept it too. */
5320 else if ((strncasecmp (name, "millicode", 9) == 0))
5321 {
5322 p = input_line_pointer;
5323 *p = c;
5324 last_call_info->ci_unwind.descriptor.millicode = 1;
5325 }
5326 else
5327 {
5328 as_bad (_("Invalid .CALLINFO argument: %s"), name);
5329 *input_line_pointer = c;
5330 }
5331 if (!is_end_of_statement ())
5332 input_line_pointer++;
5333 }
5334
5335 demand_empty_rest_of_line ();
5336 }
5337
5338 /* Switch into the code subspace. */
5339
5340 static void
5341 pa_code (unused)
5342 int unused;
5343 {
5344 #ifdef OBJ_SOM
5345 current_space = is_defined_space ("$TEXT$");
5346 current_subspace
5347 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
5348 #endif
5349 s_text (0);
5350 pa_undefine_label ();
5351 }
5352
5353 /* This is different than the standard GAS s_comm(). On HP9000/800 machines,
5354 the .comm pseudo-op has the following symtax:
5355
5356 <label> .comm <length>
5357
5358 where <label> is optional and is a symbol whose address will be the start of
5359 a block of memory <length> bytes long. <length> must be an absolute
5360 expression. <length> bytes will be allocated in the current space
5361 and subspace.
5362
5363 Also note the label may not even be on the same line as the .comm.
5364
5365 This difference in syntax means the colon function will be called
5366 on the symbol before we arrive in pa_comm. colon will set a number
5367 of attributes of the symbol that need to be fixed here. In particular
5368 the value, section pointer, fragment pointer, flags, etc. What
5369 a pain.
5370
5371 This also makes error detection all but impossible. */
5372
5373 static void
5374 pa_comm (unused)
5375 int unused;
5376 {
5377 unsigned int size;
5378 symbolS *symbol;
5379 label_symbol_struct *label_symbol = pa_get_label ();
5380
5381 if (label_symbol)
5382 symbol = label_symbol->lss_label;
5383 else
5384 symbol = NULL;
5385
5386 SKIP_WHITESPACE ();
5387 size = get_absolute_expression ();
5388
5389 if (symbol)
5390 {
5391 S_SET_VALUE (symbol, size);
5392 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
5393 S_SET_EXTERNAL (symbol);
5394
5395 /* colon() has already set the frag to the current location in the
5396 current subspace; we need to reset the fragment to the zero address
5397 fragment. We also need to reset the segment pointer. */
5398 symbol_set_frag (symbol, &zero_address_frag);
5399 }
5400 demand_empty_rest_of_line ();
5401 }
5402
5403 /* Process a .END pseudo-op. */
5404
5405 static void
5406 pa_end (unused)
5407 int unused;
5408 {
5409 demand_empty_rest_of_line ();
5410 }
5411
5412 /* Process a .ENTER pseudo-op. This is not supported. */
5413 static void
5414 pa_enter (unused)
5415 int unused;
5416 {
5417 #ifdef OBJ_SOM
5418 /* We must have a valid space and subspace. */
5419 pa_check_current_space_and_subspace ();
5420 #endif
5421
5422 as_bad (_("The .ENTER pseudo-op is not supported"));
5423 demand_empty_rest_of_line ();
5424 }
5425
5426 /* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
5427 procesure. */
5428 static void
5429 pa_entry (unused)
5430 int unused;
5431 {
5432 #ifdef OBJ_SOM
5433 /* We must have a valid space and subspace. */
5434 pa_check_current_space_and_subspace ();
5435 #endif
5436
5437 if (!within_procedure)
5438 as_bad (_("Misplaced .entry. Ignored."));
5439 else
5440 {
5441 if (!callinfo_found)
5442 as_bad (_("Missing .callinfo."));
5443 }
5444 demand_empty_rest_of_line ();
5445 within_entry_exit = TRUE;
5446
5447 #ifdef OBJ_SOM
5448 /* SOM defers building of unwind descriptors until the link phase.
5449 The assembler is responsible for creating an R_ENTRY relocation
5450 to mark the beginning of a region and hold the unwind bits, and
5451 for creating an R_EXIT relocation to mark the end of the region.
5452
5453 FIXME. ELF should be using the same conventions! The problem
5454 is an unwind requires too much relocation space. Hmmm. Maybe
5455 if we split the unwind bits up between the relocations which
5456 denote the entry and exit points. */
5457 if (last_call_info->start_symbol != NULL)
5458 {
5459 char *where = frag_more (0);
5460
5461 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
5462 NULL, (offsetT) 0, NULL,
5463 0, R_HPPA_ENTRY, e_fsel, 0, 0,
5464 (int *) &last_call_info->ci_unwind.descriptor);
5465 }
5466 #endif
5467 }
5468
5469 /* Handle a .EQU pseudo-op. */
5470
5471 static void
5472 pa_equ (reg)
5473 int reg;
5474 {
5475 label_symbol_struct *label_symbol = pa_get_label ();
5476 symbolS *symbol;
5477
5478 if (label_symbol)
5479 {
5480 symbol = label_symbol->lss_label;
5481 if (reg)
5482 S_SET_VALUE (symbol, pa_parse_number (&input_line_pointer, 0));
5483 else
5484 S_SET_VALUE (symbol, (unsigned int) get_absolute_expression ());
5485 S_SET_SEGMENT (symbol, bfd_abs_section_ptr);
5486 }
5487 else
5488 {
5489 if (reg)
5490 as_bad (_(".REG must use a label"));
5491 else
5492 as_bad (_(".EQU must use a label"));
5493 }
5494
5495 pa_undefine_label ();
5496 demand_empty_rest_of_line ();
5497 }
5498
5499 /* Helper function. Does processing for the end of a function. This
5500 usually involves creating some relocations or building special
5501 symbols to mark the end of the function. */
5502
5503 static void
5504 process_exit ()
5505 {
5506 char *where;
5507
5508 where = frag_more (0);
5509
5510 #ifdef OBJ_ELF
5511 /* Mark the end of the function, stuff away the location of the frag
5512 for the end of the function, and finally call pa_build_unwind_subspace
5513 to add an entry in the unwind table. */
5514 hppa_elf_mark_end_of_function ();
5515 pa_build_unwind_subspace (last_call_info);
5516 #else
5517 /* SOM defers building of unwind descriptors until the link phase.
5518 The assembler is responsible for creating an R_ENTRY relocation
5519 to mark the beginning of a region and hold the unwind bits, and
5520 for creating an R_EXIT relocation to mark the end of the region.
5521
5522 FIXME. ELF should be using the same conventions! The problem
5523 is an unwind requires too much relocation space. Hmmm. Maybe
5524 if we split the unwind bits up between the relocations which
5525 denote the entry and exit points. */
5526 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
5527 NULL, (offsetT) 0,
5528 NULL, 0, R_HPPA_EXIT, e_fsel, 0, 0,
5529 (int *) &last_call_info->ci_unwind.descriptor + 1);
5530 #endif
5531 }
5532
5533 /* Process a .EXIT pseudo-op. */
5534
5535 static void
5536 pa_exit (unused)
5537 int unused;
5538 {
5539 #ifdef OBJ_SOM
5540 /* We must have a valid space and subspace. */
5541 pa_check_current_space_and_subspace ();
5542 #endif
5543
5544 if (!within_procedure)
5545 as_bad (_(".EXIT must appear within a procedure"));
5546 else
5547 {
5548 if (!callinfo_found)
5549 as_bad (_("Missing .callinfo"));
5550 else
5551 {
5552 if (!within_entry_exit)
5553 as_bad (_("No .ENTRY for this .EXIT"));
5554 else
5555 {
5556 within_entry_exit = FALSE;
5557 process_exit ();
5558 }
5559 }
5560 }
5561 demand_empty_rest_of_line ();
5562 }
5563
5564 /* Process a .EXPORT directive. This makes functions external
5565 and provides information such as argument relocation entries
5566 to callers. */
5567
5568 static void
5569 pa_export (unused)
5570 int unused;
5571 {
5572 char *name, c, *p;
5573 symbolS *symbol;
5574
5575 name = input_line_pointer;
5576 c = get_symbol_end ();
5577 /* Make sure the given symbol exists. */
5578 if ((symbol = symbol_find_or_make (name)) == NULL)
5579 {
5580 as_bad (_("Cannot define export symbol: %s\n"), name);
5581 p = input_line_pointer;
5582 *p = c;
5583 input_line_pointer++;
5584 }
5585 else
5586 {
5587 /* OK. Set the external bits and process argument relocations. */
5588 S_SET_EXTERNAL (symbol);
5589 p = input_line_pointer;
5590 *p = c;
5591 if (!is_end_of_statement ())
5592 {
5593 input_line_pointer++;
5594 pa_type_args (symbol, 1);
5595 }
5596 }
5597
5598 demand_empty_rest_of_line ();
5599 }
5600
5601 /* Helper function to process arguments to a .EXPORT pseudo-op. */
5602
5603 static void
5604 pa_type_args (symbolP, is_export)
5605 symbolS *symbolP;
5606 int is_export;
5607 {
5608 char *name, c, *p;
5609 unsigned int temp, arg_reloc;
5610 pa_symbol_type type = SYMBOL_TYPE_UNKNOWN;
5611 obj_symbol_type *symbol = (obj_symbol_type *) symbol_get_bfdsym (symbolP);
5612
5613 if (strncasecmp (input_line_pointer, "absolute", 8) == 0)
5614
5615 {
5616 input_line_pointer += 8;
5617 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5618 S_SET_SEGMENT (symbolP, bfd_abs_section_ptr);
5619 type = SYMBOL_TYPE_ABSOLUTE;
5620 }
5621 else if (strncasecmp (input_line_pointer, "code", 4) == 0)
5622 {
5623 input_line_pointer += 4;
5624 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
5625 instead one should be IMPORTing/EXPORTing ENTRY types.
5626
5627 Complain if one tries to EXPORT a CODE type since that's never
5628 done. Both GCC and HP C still try to IMPORT CODE types, so
5629 silently fix them to be ENTRY types. */
5630 if (S_IS_FUNCTION (symbolP))
5631 {
5632 if (is_export)
5633 as_tsktsk (_("Using ENTRY rather than CODE in export directive for %s"),
5634 S_GET_NAME (symbolP));
5635
5636 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5637 type = SYMBOL_TYPE_ENTRY;
5638 }
5639 else
5640 {
5641 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5642 type = SYMBOL_TYPE_CODE;
5643 }
5644 }
5645 else if (strncasecmp (input_line_pointer, "data", 4) == 0)
5646 {
5647 input_line_pointer += 4;
5648 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5649 symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT;
5650 type = SYMBOL_TYPE_DATA;
5651 }
5652 else if ((strncasecmp (input_line_pointer, "entry", 5) == 0))
5653 {
5654 input_line_pointer += 5;
5655 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5656 type = SYMBOL_TYPE_ENTRY;
5657 }
5658 else if (strncasecmp (input_line_pointer, "millicode", 9) == 0)
5659 {
5660 input_line_pointer += 9;
5661 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5662 type = SYMBOL_TYPE_MILLICODE;
5663 }
5664 else if (strncasecmp (input_line_pointer, "plabel", 6) == 0)
5665 {
5666 input_line_pointer += 6;
5667 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
5668 type = SYMBOL_TYPE_PLABEL;
5669 }
5670 else if (strncasecmp (input_line_pointer, "pri_prog", 8) == 0)
5671 {
5672 input_line_pointer += 8;
5673 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5674 type = SYMBOL_TYPE_PRI_PROG;
5675 }
5676 else if (strncasecmp (input_line_pointer, "sec_prog", 8) == 0)
5677 {
5678 input_line_pointer += 8;
5679 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
5680 type = SYMBOL_TYPE_SEC_PROG;
5681 }
5682
5683 /* SOM requires much more information about symbol types
5684 than BFD understands. This is how we get this information
5685 to the SOM BFD backend. */
5686 #ifdef obj_set_symbol_type
5687 obj_set_symbol_type (symbol_get_bfdsym (symbolP), (int) type);
5688 #endif
5689
5690 /* Now that the type of the exported symbol has been handled,
5691 handle any argument relocation information. */
5692 while (!is_end_of_statement ())
5693 {
5694 if (*input_line_pointer == ',')
5695 input_line_pointer++;
5696 name = input_line_pointer;
5697 c = get_symbol_end ();
5698 /* Argument sources. */
5699 if ((strncasecmp (name, "argw", 4) == 0))
5700 {
5701 p = input_line_pointer;
5702 *p = c;
5703 input_line_pointer++;
5704 temp = atoi (name + 4);
5705 name = input_line_pointer;
5706 c = get_symbol_end ();
5707 arg_reloc = pa_align_arg_reloc (temp, pa_build_arg_reloc (name));
5708 #ifdef OBJ_SOM
5709 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
5710 #endif
5711 *input_line_pointer = c;
5712 }
5713 /* The return value. */
5714 else if ((strncasecmp (name, "rtnval", 6)) == 0)
5715 {
5716 p = input_line_pointer;
5717 *p = c;
5718 input_line_pointer++;
5719 name = input_line_pointer;
5720 c = get_symbol_end ();
5721 arg_reloc = pa_build_arg_reloc (name);
5722 #ifdef OBJ_SOM
5723 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
5724 #endif
5725 *input_line_pointer = c;
5726 }
5727 /* Privelege level. */
5728 else if ((strncasecmp (name, "priv_lev", 8)) == 0)
5729 {
5730 p = input_line_pointer;
5731 *p = c;
5732 input_line_pointer++;
5733 temp = atoi (input_line_pointer);
5734 #ifdef OBJ_SOM
5735 symbol->tc_data.ap.hppa_priv_level = temp;
5736 #endif
5737 c = get_symbol_end ();
5738 *input_line_pointer = c;
5739 }
5740 else
5741 {
5742 as_bad (_("Undefined .EXPORT/.IMPORT argument (ignored): %s"), name);
5743 p = input_line_pointer;
5744 *p = c;
5745 }
5746 if (!is_end_of_statement ())
5747 input_line_pointer++;
5748 }
5749 }
5750
5751 /* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
5752 assembly file must either be defined in the assembly file, or
5753 explicitly IMPORTED from another. */
5754
5755 static void
5756 pa_import (unused)
5757 int unused;
5758 {
5759 char *name, c, *p;
5760 symbolS *symbol;
5761
5762 name = input_line_pointer;
5763 c = get_symbol_end ();
5764
5765 symbol = symbol_find (name);
5766 /* Ugh. We might be importing a symbol defined earlier in the file,
5767 in which case all the code below will really screw things up
5768 (set the wrong segment, symbol flags & type, etc). */
5769 if (symbol == NULL || !S_IS_DEFINED (symbol))
5770 {
5771 symbol = symbol_find_or_make (name);
5772 p = input_line_pointer;
5773 *p = c;
5774
5775 if (!is_end_of_statement ())
5776 {
5777 input_line_pointer++;
5778 pa_type_args (symbol, 0);
5779 }
5780 else
5781 {
5782 /* Sigh. To be compatable with the HP assembler and to help
5783 poorly written assembly code, we assign a type based on
5784 the the current segment. Note only BSF_FUNCTION really
5785 matters, we do not need to set the full SYMBOL_TYPE_* info. */
5786 if (now_seg == text_section)
5787 symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION;
5788
5789 /* If the section is undefined, then the symbol is undefined
5790 Since this is an import, leave the section undefined. */
5791 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
5792 }
5793 }
5794 else
5795 {
5796 /* The symbol was already defined. Just eat everything up to
5797 the end of the current statement. */
5798 while (!is_end_of_statement ())
5799 input_line_pointer++;
5800 }
5801
5802 demand_empty_rest_of_line ();
5803 }
5804
5805 /* Handle a .LABEL pseudo-op. */
5806
5807 static void
5808 pa_label (unused)
5809 int unused;
5810 {
5811 char *name, c, *p;
5812
5813 name = input_line_pointer;
5814 c = get_symbol_end ();
5815
5816 if (strlen (name) > 0)
5817 {
5818 colon (name);
5819 p = input_line_pointer;
5820 *p = c;
5821 }
5822 else
5823 {
5824 as_warn (_("Missing label name on .LABEL"));
5825 }
5826
5827 if (!is_end_of_statement ())
5828 {
5829 as_warn (_("extra .LABEL arguments ignored."));
5830 ignore_rest_of_line ();
5831 }
5832 demand_empty_rest_of_line ();
5833 }
5834
5835 /* Handle a .LEAVE pseudo-op. This is not supported yet. */
5836
5837 static void
5838 pa_leave (unused)
5839 int unused;
5840 {
5841 #ifdef OBJ_SOM
5842 /* We must have a valid space and subspace. */
5843 pa_check_current_space_and_subspace ();
5844 #endif
5845
5846 as_bad (_("The .LEAVE pseudo-op is not supported"));
5847 demand_empty_rest_of_line ();
5848 }
5849
5850 /* Handle a .LEVEL pseudo-op. */
5851
5852 static void
5853 pa_level (unused)
5854 int unused;
5855 {
5856 char *level;
5857
5858 level = input_line_pointer;
5859 if (strncmp (level, "1.0", 3) == 0)
5860 {
5861 input_line_pointer += 3;
5862 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10))
5863 as_warn (_("could not set architecture and machine"));
5864 }
5865 else if (strncmp (level, "1.1", 3) == 0)
5866 {
5867 input_line_pointer += 3;
5868 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 11))
5869 as_warn (_("could not set architecture and machine"));
5870 }
5871 else if (strncmp (level, "2.0w", 4) == 0)
5872 {
5873 input_line_pointer += 4;
5874 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 25))
5875 as_warn (_("could not set architecture and machine"));
5876 }
5877 else if (strncmp (level, "2.0", 3) == 0)
5878 {
5879 input_line_pointer += 3;
5880 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 20))
5881 as_warn (_("could not set architecture and machine"));
5882 }
5883 else
5884 {
5885 as_bad (_("Unrecognized .LEVEL argument\n"));
5886 ignore_rest_of_line ();
5887 }
5888 demand_empty_rest_of_line ();
5889 }
5890
5891 /* Handle a .ORIGIN pseudo-op. */
5892
5893 static void
5894 pa_origin (unused)
5895 int unused;
5896 {
5897 #ifdef OBJ_SOM
5898 /* We must have a valid space and subspace. */
5899 pa_check_current_space_and_subspace ();
5900 #endif
5901
5902 s_org (0);
5903 pa_undefine_label ();
5904 }
5905
5906 /* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
5907 is for static functions. FIXME. Should share more code with .EXPORT. */
5908
5909 static void
5910 pa_param (unused)
5911 int unused;
5912 {
5913 char *name, c, *p;
5914 symbolS *symbol;
5915
5916 name = input_line_pointer;
5917 c = get_symbol_end ();
5918
5919 if ((symbol = symbol_find_or_make (name)) == NULL)
5920 {
5921 as_bad (_("Cannot define static symbol: %s\n"), name);
5922 p = input_line_pointer;
5923 *p = c;
5924 input_line_pointer++;
5925 }
5926 else
5927 {
5928 S_CLEAR_EXTERNAL (symbol);
5929 p = input_line_pointer;
5930 *p = c;
5931 if (!is_end_of_statement ())
5932 {
5933 input_line_pointer++;
5934 pa_type_args (symbol, 0);
5935 }
5936 }
5937
5938 demand_empty_rest_of_line ();
5939 }
5940
5941 /* Handle a .PROC pseudo-op. It is used to mark the beginning
5942 of a procedure from a syntatical point of view. */
5943
5944 static void
5945 pa_proc (unused)
5946 int unused;
5947 {
5948 struct call_info *call_info;
5949
5950 #ifdef OBJ_SOM
5951 /* We must have a valid space and subspace. */
5952 pa_check_current_space_and_subspace ();
5953 #endif
5954
5955 if (within_procedure)
5956 as_fatal (_("Nested procedures"));
5957
5958 /* Reset global variables for new procedure. */
5959 callinfo_found = FALSE;
5960 within_procedure = TRUE;
5961
5962 /* Create another call_info structure. */
5963 call_info = (struct call_info *) xmalloc (sizeof (struct call_info));
5964
5965 if (!call_info)
5966 as_fatal (_("Cannot allocate unwind descriptor\n"));
5967
5968 memset (call_info, 0, sizeof (struct call_info));
5969
5970 call_info->ci_next = NULL;
5971
5972 if (call_info_root == NULL)
5973 {
5974 call_info_root = call_info;
5975 last_call_info = call_info;
5976 }
5977 else
5978 {
5979 last_call_info->ci_next = call_info;
5980 last_call_info = call_info;
5981 }
5982
5983 /* set up defaults on call_info structure */
5984
5985 call_info->ci_unwind.descriptor.cannot_unwind = 0;
5986 call_info->ci_unwind.descriptor.region_desc = 1;
5987 call_info->ci_unwind.descriptor.hpux_interrupt_marker = 0;
5988
5989 /* If we got a .PROC pseudo-op, we know that the function is defined
5990 locally. Make sure it gets into the symbol table. */
5991 {
5992 label_symbol_struct *label_symbol = pa_get_label ();
5993
5994 if (label_symbol)
5995 {
5996 if (label_symbol->lss_label)
5997 {
5998 last_call_info->start_symbol = label_symbol->lss_label;
5999 symbol_get_bfdsym (label_symbol->lss_label)->flags |= BSF_FUNCTION;
6000 }
6001 else
6002 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
6003 }
6004 else
6005 last_call_info->start_symbol = NULL;
6006 }
6007
6008 demand_empty_rest_of_line ();
6009 }
6010
6011 /* Process the syntatical end of a procedure. Make sure all the
6012 appropriate pseudo-ops were found within the procedure. */
6013
6014 static void
6015 pa_procend (unused)
6016 int unused;
6017 {
6018
6019 #ifdef OBJ_SOM
6020 /* We must have a valid space and subspace. */
6021 pa_check_current_space_and_subspace ();
6022 #endif
6023
6024 /* If we are within a procedure definition, make sure we've
6025 defined a label for the procedure; handle case where the
6026 label was defined after the .PROC directive.
6027
6028 Note there's not need to diddle with the segment or fragment
6029 for the label symbol in this case. We have already switched
6030 into the new $CODE$ subspace at this point. */
6031 if (within_procedure && last_call_info->start_symbol == NULL)
6032 {
6033 label_symbol_struct *label_symbol = pa_get_label ();
6034
6035 if (label_symbol)
6036 {
6037 if (label_symbol->lss_label)
6038 {
6039 last_call_info->start_symbol = label_symbol->lss_label;
6040 symbol_get_bfdsym (label_symbol->lss_label)->flags
6041 |= BSF_FUNCTION;
6042 #ifdef OBJ_SOM
6043 /* Also handle allocation of a fixup to hold the unwind
6044 information when the label appears after the proc/procend. */
6045 if (within_entry_exit)
6046 {
6047 char *where = frag_more (0);
6048
6049 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
6050 NULL, (offsetT) 0, NULL,
6051 0, R_HPPA_ENTRY, e_fsel, 0, 0,
6052 (int *) &last_call_info->ci_unwind.descriptor);
6053 }
6054 #endif
6055 }
6056 else
6057 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
6058 }
6059 else
6060 as_bad (_("Missing function name for .PROC"));
6061 }
6062
6063 if (!within_procedure)
6064 as_bad (_("misplaced .procend"));
6065
6066 if (!callinfo_found)
6067 as_bad (_("Missing .callinfo for this procedure"));
6068
6069 if (within_entry_exit)
6070 as_bad (_("Missing .EXIT for a .ENTRY"));
6071
6072 #ifdef OBJ_ELF
6073 /* ELF needs to mark the end of each function so that it can compute
6074 the size of the function (apparently its needed in the symbol table). */
6075 hppa_elf_mark_end_of_function ();
6076 #endif
6077
6078 within_procedure = FALSE;
6079 demand_empty_rest_of_line ();
6080 pa_undefine_label ();
6081 }
6082
6083 /* If VALUE is an exact power of two between zero and 2^31, then
6084 return log2 (VALUE). Else return -1. */
6085
6086 static int
6087 log2 (value)
6088 int value;
6089 {
6090 int shift = 0;
6091
6092 while ((1 << shift) != value && shift < 32)
6093 shift++;
6094
6095 if (shift >= 32)
6096 return -1;
6097 else
6098 return shift;
6099 }
6100
6101
6102 #ifdef OBJ_SOM
6103 /* Check to make sure we have a valid space and subspace. */
6104
6105 static void
6106 pa_check_current_space_and_subspace ()
6107 {
6108 if (current_space == NULL)
6109 as_fatal (_("Not in a space.\n"));
6110
6111 if (current_subspace == NULL)
6112 as_fatal (_("Not in a subspace.\n"));
6113 }
6114
6115 /* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
6116 then create a new space entry to hold the information specified
6117 by the parameters to the .SPACE directive. */
6118
6119 static sd_chain_struct *
6120 pa_parse_space_stmt (space_name, create_flag)
6121 char *space_name;
6122 int create_flag;
6123 {
6124 char *name, *ptemp, c;
6125 char loadable, defined, private, sort;
6126 int spnum, temp;
6127 asection *seg = NULL;
6128 sd_chain_struct *space;
6129
6130 /* load default values */
6131 spnum = 0;
6132 sort = 0;
6133 loadable = TRUE;
6134 defined = TRUE;
6135 private = FALSE;
6136 if (strcmp (space_name, "$TEXT$") == 0)
6137 {
6138 seg = pa_def_spaces[0].segment;
6139 defined = pa_def_spaces[0].defined;
6140 private = pa_def_spaces[0].private;
6141 sort = pa_def_spaces[0].sort;
6142 spnum = pa_def_spaces[0].spnum;
6143 }
6144 else if (strcmp (space_name, "$PRIVATE$") == 0)
6145 {
6146 seg = pa_def_spaces[1].segment;
6147 defined = pa_def_spaces[1].defined;
6148 private = pa_def_spaces[1].private;
6149 sort = pa_def_spaces[1].sort;
6150 spnum = pa_def_spaces[1].spnum;
6151 }
6152
6153 if (!is_end_of_statement ())
6154 {
6155 print_errors = FALSE;
6156 ptemp = input_line_pointer + 1;
6157 /* First see if the space was specified as a number rather than
6158 as a name. According to the PA assembly manual the rest of
6159 the line should be ignored. */
6160 temp = pa_parse_number (&ptemp, 0);
6161 if (temp >= 0)
6162 {
6163 spnum = temp;
6164 input_line_pointer = ptemp;
6165 }
6166 else
6167 {
6168 while (!is_end_of_statement ())
6169 {
6170 input_line_pointer++;
6171 name = input_line_pointer;
6172 c = get_symbol_end ();
6173 if ((strncasecmp (name, "spnum", 5) == 0))
6174 {
6175 *input_line_pointer = c;
6176 input_line_pointer++;
6177 spnum = get_absolute_expression ();
6178 }
6179 else if ((strncasecmp (name, "sort", 4) == 0))
6180 {
6181 *input_line_pointer = c;
6182 input_line_pointer++;
6183 sort = get_absolute_expression ();
6184 }
6185 else if ((strncasecmp (name, "unloadable", 10) == 0))
6186 {
6187 *input_line_pointer = c;
6188 loadable = FALSE;
6189 }
6190 else if ((strncasecmp (name, "notdefined", 10) == 0))
6191 {
6192 *input_line_pointer = c;
6193 defined = FALSE;
6194 }
6195 else if ((strncasecmp (name, "private", 7) == 0))
6196 {
6197 *input_line_pointer = c;
6198 private = TRUE;
6199 }
6200 else
6201 {
6202 as_bad (_("Invalid .SPACE argument"));
6203 *input_line_pointer = c;
6204 if (!is_end_of_statement ())
6205 input_line_pointer++;
6206 }
6207 }
6208 }
6209 print_errors = TRUE;
6210 }
6211
6212 if (create_flag && seg == NULL)
6213 seg = subseg_new (space_name, 0);
6214
6215 /* If create_flag is nonzero, then create the new space with
6216 the attributes computed above. Else set the values in
6217 an already existing space -- this can only happen for
6218 the first occurence of a built-in space. */
6219 if (create_flag)
6220 space = create_new_space (space_name, spnum, loadable, defined,
6221 private, sort, seg, 1);
6222 else
6223 {
6224 space = is_defined_space (space_name);
6225 SPACE_SPNUM (space) = spnum;
6226 SPACE_DEFINED (space) = defined & 1;
6227 SPACE_USER_DEFINED (space) = 1;
6228 }
6229
6230 #ifdef obj_set_section_attributes
6231 obj_set_section_attributes (seg, defined, private, sort, spnum);
6232 #endif
6233
6234 return space;
6235 }
6236
6237 /* Handle a .SPACE pseudo-op; this switches the current space to the
6238 given space, creating the new space if necessary. */
6239
6240 static void
6241 pa_space (unused)
6242 int unused;
6243 {
6244 char *name, c, *space_name, *save_s;
6245 int temp;
6246 sd_chain_struct *sd_chain;
6247
6248 if (within_procedure)
6249 {
6250 as_bad (_("Can\'t change spaces within a procedure definition. Ignored"));
6251 ignore_rest_of_line ();
6252 }
6253 else
6254 {
6255 /* Check for some of the predefined spaces. FIXME: most of the code
6256 below is repeated several times, can we extract the common parts
6257 and place them into a subroutine or something similar? */
6258 /* FIXME Is this (and the next IF stmt) really right?
6259 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
6260 if (strncmp (input_line_pointer, "$TEXT$", 6) == 0)
6261 {
6262 input_line_pointer += 6;
6263 sd_chain = is_defined_space ("$TEXT$");
6264 if (sd_chain == NULL)
6265 sd_chain = pa_parse_space_stmt ("$TEXT$", 1);
6266 else if (SPACE_USER_DEFINED (sd_chain) == 0)
6267 sd_chain = pa_parse_space_stmt ("$TEXT$", 0);
6268
6269 current_space = sd_chain;
6270 subseg_set (text_section, sd_chain->sd_last_subseg);
6271 current_subspace
6272 = pa_subsegment_to_subspace (text_section,
6273 sd_chain->sd_last_subseg);
6274 demand_empty_rest_of_line ();
6275 return;
6276 }
6277 if (strncmp (input_line_pointer, "$PRIVATE$", 9) == 0)
6278 {
6279 input_line_pointer += 9;
6280 sd_chain = is_defined_space ("$PRIVATE$");
6281 if (sd_chain == NULL)
6282 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 1);
6283 else if (SPACE_USER_DEFINED (sd_chain) == 0)
6284 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 0);
6285
6286 current_space = sd_chain;
6287 subseg_set (data_section, sd_chain->sd_last_subseg);
6288 current_subspace
6289 = pa_subsegment_to_subspace (data_section,
6290 sd_chain->sd_last_subseg);
6291 demand_empty_rest_of_line ();
6292 return;
6293 }
6294 if (!strncasecmp (input_line_pointer,
6295 GDB_DEBUG_SPACE_NAME,
6296 strlen (GDB_DEBUG_SPACE_NAME)))
6297 {
6298 input_line_pointer += strlen (GDB_DEBUG_SPACE_NAME);
6299 sd_chain = is_defined_space (GDB_DEBUG_SPACE_NAME);
6300 if (sd_chain == NULL)
6301 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 1);
6302 else if (SPACE_USER_DEFINED (sd_chain) == 0)
6303 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 0);
6304
6305 current_space = sd_chain;
6306
6307 {
6308 asection *gdb_section
6309 = bfd_make_section_old_way (stdoutput, GDB_DEBUG_SPACE_NAME);
6310
6311 subseg_set (gdb_section, sd_chain->sd_last_subseg);
6312 current_subspace
6313 = pa_subsegment_to_subspace (gdb_section,
6314 sd_chain->sd_last_subseg);
6315 }
6316 demand_empty_rest_of_line ();
6317 return;
6318 }
6319
6320 /* It could be a space specified by number. */
6321 print_errors = 0;
6322 save_s = input_line_pointer;
6323 if ((temp = pa_parse_number (&input_line_pointer, 0)) >= 0)
6324 {
6325 if ((sd_chain = pa_find_space_by_number (temp)))
6326 {
6327 current_space = sd_chain;
6328
6329 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
6330 current_subspace
6331 = pa_subsegment_to_subspace (sd_chain->sd_seg,
6332 sd_chain->sd_last_subseg);
6333 demand_empty_rest_of_line ();
6334 return;
6335 }
6336 }
6337
6338 /* Not a number, attempt to create a new space. */
6339 print_errors = 1;
6340 input_line_pointer = save_s;
6341 name = input_line_pointer;
6342 c = get_symbol_end ();
6343 space_name = xmalloc (strlen (name) + 1);
6344 strcpy (space_name, name);
6345 *input_line_pointer = c;
6346
6347 sd_chain = pa_parse_space_stmt (space_name, 1);
6348 current_space = sd_chain;
6349
6350 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
6351 current_subspace = pa_subsegment_to_subspace (sd_chain->sd_seg,
6352 sd_chain->sd_last_subseg);
6353 demand_empty_rest_of_line ();
6354 }
6355 }
6356
6357 /* Switch to a new space. (I think). FIXME. */
6358
6359 static void
6360 pa_spnum (unused)
6361 int unused;
6362 {
6363 char *name;
6364 char c;
6365 char *p;
6366 sd_chain_struct *space;
6367
6368 name = input_line_pointer;
6369 c = get_symbol_end ();
6370 space = is_defined_space (name);
6371 if (space)
6372 {
6373 p = frag_more (4);
6374 md_number_to_chars (p, SPACE_SPNUM (space), 4);
6375 }
6376 else
6377 as_warn (_("Undefined space: '%s' Assuming space number = 0."), name);
6378
6379 *input_line_pointer = c;
6380 demand_empty_rest_of_line ();
6381 }
6382
6383 /* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
6384 given subspace, creating the new subspace if necessary.
6385
6386 FIXME. Should mirror pa_space more closely, in particular how
6387 they're broken up into subroutines. */
6388
6389 static void
6390 pa_subspace (create_new)
6391 int create_new;
6392 {
6393 char *name, *ss_name, c;
6394 char loadable, code_only, common, dup_common, zero, sort;
6395 int i, access, space_index, alignment, quadrant, applicable, flags;
6396 sd_chain_struct *space;
6397 ssd_chain_struct *ssd;
6398 asection *section;
6399
6400 if (current_space == NULL)
6401 as_fatal (_("Must be in a space before changing or declaring subspaces.\n"));
6402
6403 if (within_procedure)
6404 {
6405 as_bad (_("Can\'t change subspaces within a procedure definition. Ignored"));
6406 ignore_rest_of_line ();
6407 }
6408 else
6409 {
6410 name = input_line_pointer;
6411 c = get_symbol_end ();
6412 ss_name = xmalloc (strlen (name) + 1);
6413 strcpy (ss_name, name);
6414 *input_line_pointer = c;
6415
6416 /* Load default values. */
6417 sort = 0;
6418 access = 0x7f;
6419 loadable = 1;
6420 common = 0;
6421 dup_common = 0;
6422 code_only = 0;
6423 zero = 0;
6424 space_index = ~0;
6425 alignment = 1;
6426 quadrant = 0;
6427
6428 space = current_space;
6429 if (create_new)
6430 ssd = NULL;
6431 else
6432 ssd = is_defined_subspace (ss_name);
6433 /* Allow user to override the builtin attributes of subspaces. But
6434 only allow the attributes to be changed once! */
6435 if (ssd && SUBSPACE_DEFINED (ssd))
6436 {
6437 subseg_set (ssd->ssd_seg, ssd->ssd_subseg);
6438 current_subspace = ssd;
6439 if (!is_end_of_statement ())
6440 as_warn (_("Parameters of an existing subspace can\'t be modified"));
6441 demand_empty_rest_of_line ();
6442 return;
6443 }
6444 else
6445 {
6446 /* A new subspace. Load default values if it matches one of
6447 the builtin subspaces. */
6448 i = 0;
6449 while (pa_def_subspaces[i].name)
6450 {
6451 if (strcasecmp (pa_def_subspaces[i].name, ss_name) == 0)
6452 {
6453 loadable = pa_def_subspaces[i].loadable;
6454 common = pa_def_subspaces[i].common;
6455 dup_common = pa_def_subspaces[i].dup_common;
6456 code_only = pa_def_subspaces[i].code_only;
6457 zero = pa_def_subspaces[i].zero;
6458 space_index = pa_def_subspaces[i].space_index;
6459 alignment = pa_def_subspaces[i].alignment;
6460 quadrant = pa_def_subspaces[i].quadrant;
6461 access = pa_def_subspaces[i].access;
6462 sort = pa_def_subspaces[i].sort;
6463 break;
6464 }
6465 i++;
6466 }
6467 }
6468
6469 /* We should be working with a new subspace now. Fill in
6470 any information as specified by the user. */
6471 if (!is_end_of_statement ())
6472 {
6473 input_line_pointer++;
6474 while (!is_end_of_statement ())
6475 {
6476 name = input_line_pointer;
6477 c = get_symbol_end ();
6478 if ((strncasecmp (name, "quad", 4) == 0))
6479 {
6480 *input_line_pointer = c;
6481 input_line_pointer++;
6482 quadrant = get_absolute_expression ();
6483 }
6484 else if ((strncasecmp (name, "align", 5) == 0))
6485 {
6486 *input_line_pointer = c;
6487 input_line_pointer++;
6488 alignment = get_absolute_expression ();
6489 if (log2 (alignment) == -1)
6490 {
6491 as_bad (_("Alignment must be a power of 2"));
6492 alignment = 1;
6493 }
6494 }
6495 else if ((strncasecmp (name, "access", 6) == 0))
6496 {
6497 *input_line_pointer = c;
6498 input_line_pointer++;
6499 access = get_absolute_expression ();
6500 }
6501 else if ((strncasecmp (name, "sort", 4) == 0))
6502 {
6503 *input_line_pointer = c;
6504 input_line_pointer++;
6505 sort = get_absolute_expression ();
6506 }
6507 else if ((strncasecmp (name, "code_only", 9) == 0))
6508 {
6509 *input_line_pointer = c;
6510 code_only = 1;
6511 }
6512 else if ((strncasecmp (name, "unloadable", 10) == 0))
6513 {
6514 *input_line_pointer = c;
6515 loadable = 0;
6516 }
6517 else if ((strncasecmp (name, "common", 6) == 0))
6518 {
6519 *input_line_pointer = c;
6520 common = 1;
6521 }
6522 else if ((strncasecmp (name, "dup_comm", 8) == 0))
6523 {
6524 *input_line_pointer = c;
6525 dup_common = 1;
6526 }
6527 else if ((strncasecmp (name, "zero", 4) == 0))
6528 {
6529 *input_line_pointer = c;
6530 zero = 1;
6531 }
6532 else if ((strncasecmp (name, "first", 5) == 0))
6533 as_bad (_("FIRST not supported as a .SUBSPACE argument"));
6534 else
6535 as_bad (_("Invalid .SUBSPACE argument"));
6536 if (!is_end_of_statement ())
6537 input_line_pointer++;
6538 }
6539 }
6540
6541 /* Compute a reasonable set of BFD flags based on the information
6542 in the .subspace directive. */
6543 applicable = bfd_applicable_section_flags (stdoutput);
6544 flags = 0;
6545 if (loadable)
6546 flags |= (SEC_ALLOC | SEC_LOAD);
6547 if (code_only)
6548 flags |= SEC_CODE;
6549 if (common || dup_common)
6550 flags |= SEC_IS_COMMON;
6551
6552 flags |= SEC_RELOC | SEC_HAS_CONTENTS;
6553
6554 /* This is a zero-filled subspace (eg BSS). */
6555 if (zero)
6556 flags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
6557
6558 applicable &= flags;
6559
6560 /* If this is an existing subspace, then we want to use the
6561 segment already associated with the subspace.
6562
6563 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
6564 lots of sections. It might be a problem in the PA ELF
6565 code, I do not know yet. For now avoid creating anything
6566 but the "standard" sections for ELF. */
6567 if (create_new)
6568 section = subseg_force_new (ss_name, 0);
6569 else if (ssd)
6570 section = ssd->ssd_seg;
6571 else
6572 section = subseg_new (ss_name, 0);
6573
6574 if (zero)
6575 seg_info (section)->bss = 1;
6576
6577 /* Now set the flags. */
6578 bfd_set_section_flags (stdoutput, section, applicable);
6579
6580 /* Record any alignment request for this section. */
6581 record_alignment (section, log2 (alignment));
6582
6583 /* Set the starting offset for this section. */
6584 bfd_set_section_vma (stdoutput, section,
6585 pa_subspace_start (space, quadrant));
6586
6587 /* Now that all the flags are set, update an existing subspace,
6588 or create a new one. */
6589 if (ssd)
6590
6591 current_subspace = update_subspace (space, ss_name, loadable,
6592 code_only, common, dup_common,
6593 sort, zero, access, space_index,
6594 alignment, quadrant,
6595 section);
6596 else
6597 current_subspace = create_new_subspace (space, ss_name, loadable,
6598 code_only, common,
6599 dup_common, zero, sort,
6600 access, space_index,
6601 alignment, quadrant, section);
6602
6603 demand_empty_rest_of_line ();
6604 current_subspace->ssd_seg = section;
6605 subseg_set (current_subspace->ssd_seg, current_subspace->ssd_subseg);
6606 }
6607 SUBSPACE_DEFINED (current_subspace) = 1;
6608 }
6609
6610
6611 /* Create default space and subspace dictionaries. */
6612
6613 static void
6614 pa_spaces_begin ()
6615 {
6616 int i;
6617
6618 space_dict_root = NULL;
6619 space_dict_last = NULL;
6620
6621 i = 0;
6622 while (pa_def_spaces[i].name)
6623 {
6624 char *name;
6625
6626 /* Pick the right name to use for the new section. */
6627 name = pa_def_spaces[i].name;
6628
6629 pa_def_spaces[i].segment = subseg_new (name, 0);
6630 create_new_space (pa_def_spaces[i].name, pa_def_spaces[i].spnum,
6631 pa_def_spaces[i].loadable, pa_def_spaces[i].defined,
6632 pa_def_spaces[i].private, pa_def_spaces[i].sort,
6633 pa_def_spaces[i].segment, 0);
6634 i++;
6635 }
6636
6637 i = 0;
6638 while (pa_def_subspaces[i].name)
6639 {
6640 char *name;
6641 int applicable, subsegment;
6642 asection *segment = NULL;
6643 sd_chain_struct *space;
6644
6645 /* Pick the right name for the new section and pick the right
6646 subsegment number. */
6647 name = pa_def_subspaces[i].name;
6648 subsegment = 0;
6649
6650 /* Create the new section. */
6651 segment = subseg_new (name, subsegment);
6652
6653
6654 /* For SOM we want to replace the standard .text, .data, and .bss
6655 sections with our own. We also want to set BFD flags for
6656 all the built-in subspaces. */
6657 if (!strcmp (pa_def_subspaces[i].name, "$CODE$"))
6658 {
6659 text_section = segment;
6660 applicable = bfd_applicable_section_flags (stdoutput);
6661 bfd_set_section_flags (stdoutput, segment,
6662 applicable & (SEC_ALLOC | SEC_LOAD
6663 | SEC_RELOC | SEC_CODE
6664 | SEC_READONLY
6665 | SEC_HAS_CONTENTS));
6666 }
6667 else if (!strcmp (pa_def_subspaces[i].name, "$DATA$"))
6668 {
6669 data_section = segment;
6670 applicable = bfd_applicable_section_flags (stdoutput);
6671 bfd_set_section_flags (stdoutput, segment,
6672 applicable & (SEC_ALLOC | SEC_LOAD
6673 | SEC_RELOC
6674 | SEC_HAS_CONTENTS));
6675
6676
6677 }
6678 else if (!strcmp (pa_def_subspaces[i].name, "$BSS$"))
6679 {
6680 bss_section = segment;
6681 applicable = bfd_applicable_section_flags (stdoutput);
6682 bfd_set_section_flags (stdoutput, segment,
6683 applicable & SEC_ALLOC);
6684 }
6685 else if (!strcmp (pa_def_subspaces[i].name, "$LIT$"))
6686 {
6687 applicable = bfd_applicable_section_flags (stdoutput);
6688 bfd_set_section_flags (stdoutput, segment,
6689 applicable & (SEC_ALLOC | SEC_LOAD
6690 | SEC_RELOC
6691 | SEC_READONLY
6692 | SEC_HAS_CONTENTS));
6693 }
6694 else if (!strcmp (pa_def_subspaces[i].name, "$MILLICODE$"))
6695 {
6696 applicable = bfd_applicable_section_flags (stdoutput);
6697 bfd_set_section_flags (stdoutput, segment,
6698 applicable & (SEC_ALLOC | SEC_LOAD
6699 | SEC_RELOC
6700 | SEC_READONLY
6701 | SEC_HAS_CONTENTS));
6702 }
6703 else if (!strcmp (pa_def_subspaces[i].name, "$UNWIND$"))
6704 {
6705 applicable = bfd_applicable_section_flags (stdoutput);
6706 bfd_set_section_flags (stdoutput, segment,
6707 applicable & (SEC_ALLOC | SEC_LOAD
6708 | SEC_RELOC
6709 | SEC_READONLY
6710 | SEC_HAS_CONTENTS));
6711 }
6712
6713 /* Find the space associated with this subspace. */
6714 space = pa_segment_to_space (pa_def_spaces[pa_def_subspaces[i].
6715 def_space_index].segment);
6716 if (space == NULL)
6717 {
6718 as_fatal (_("Internal error: Unable to find containing space for %s."),
6719 pa_def_subspaces[i].name);
6720 }
6721
6722 create_new_subspace (space, name,
6723 pa_def_subspaces[i].loadable,
6724 pa_def_subspaces[i].code_only,
6725 pa_def_subspaces[i].common,
6726 pa_def_subspaces[i].dup_common,
6727 pa_def_subspaces[i].zero,
6728 pa_def_subspaces[i].sort,
6729 pa_def_subspaces[i].access,
6730 pa_def_subspaces[i].space_index,
6731 pa_def_subspaces[i].alignment,
6732 pa_def_subspaces[i].quadrant,
6733 segment);
6734 i++;
6735 }
6736 }
6737
6738
6739
6740 /* Create a new space NAME, with the appropriate flags as defined
6741 by the given parameters. */
6742
6743 static sd_chain_struct *
6744 create_new_space (name, spnum, loadable, defined, private,
6745 sort, seg, user_defined)
6746 char *name;
6747 int spnum;
6748 int loadable;
6749 int defined;
6750 int private;
6751 int sort;
6752 asection *seg;
6753 int user_defined;
6754 {
6755 sd_chain_struct *chain_entry;
6756
6757 chain_entry = (sd_chain_struct *) xmalloc (sizeof (sd_chain_struct));
6758 if (!chain_entry)
6759 as_fatal (_("Out of memory: could not allocate new space chain entry: %s\n"),
6760 name);
6761
6762 SPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6763 strcpy (SPACE_NAME (chain_entry), name);
6764 SPACE_DEFINED (chain_entry) = defined;
6765 SPACE_USER_DEFINED (chain_entry) = user_defined;
6766 SPACE_SPNUM (chain_entry) = spnum;
6767
6768 chain_entry->sd_seg = seg;
6769 chain_entry->sd_last_subseg = -1;
6770 chain_entry->sd_subspaces = NULL;
6771 chain_entry->sd_next = NULL;
6772
6773 /* Find spot for the new space based on its sort key. */
6774 if (!space_dict_last)
6775 space_dict_last = chain_entry;
6776
6777 if (space_dict_root == NULL)
6778 space_dict_root = chain_entry;
6779 else
6780 {
6781 sd_chain_struct *chain_pointer;
6782 sd_chain_struct *prev_chain_pointer;
6783
6784 chain_pointer = space_dict_root;
6785 prev_chain_pointer = NULL;
6786
6787 while (chain_pointer)
6788 {
6789 prev_chain_pointer = chain_pointer;
6790 chain_pointer = chain_pointer->sd_next;
6791 }
6792
6793 /* At this point we've found the correct place to add the new
6794 entry. So add it and update the linked lists as appropriate. */
6795 if (prev_chain_pointer)
6796 {
6797 chain_entry->sd_next = chain_pointer;
6798 prev_chain_pointer->sd_next = chain_entry;
6799 }
6800 else
6801 {
6802 space_dict_root = chain_entry;
6803 chain_entry->sd_next = chain_pointer;
6804 }
6805
6806 if (chain_entry->sd_next == NULL)
6807 space_dict_last = chain_entry;
6808 }
6809
6810 /* This is here to catch predefined spaces which do not get
6811 modified by the user's input. Another call is found at
6812 the bottom of pa_parse_space_stmt to handle cases where
6813 the user modifies a predefined space. */
6814 #ifdef obj_set_section_attributes
6815 obj_set_section_attributes (seg, defined, private, sort, spnum);
6816 #endif
6817
6818 return chain_entry;
6819 }
6820
6821 /* Create a new subspace NAME, with the appropriate flags as defined
6822 by the given parameters.
6823
6824 Add the new subspace to the subspace dictionary chain in numerical
6825 order as defined by the SORT entries. */
6826
6827 static ssd_chain_struct *
6828 create_new_subspace (space, name, loadable, code_only, common,
6829 dup_common, is_zero, sort, access, space_index,
6830 alignment, quadrant, seg)
6831 sd_chain_struct *space;
6832 char *name;
6833 int loadable, code_only, common, dup_common, is_zero;
6834 int sort;
6835 int access;
6836 int space_index;
6837 int alignment;
6838 int quadrant;
6839 asection *seg;
6840 {
6841 ssd_chain_struct *chain_entry;
6842
6843 chain_entry = (ssd_chain_struct *) xmalloc (sizeof (ssd_chain_struct));
6844 if (!chain_entry)
6845 as_fatal (_("Out of memory: could not allocate new subspace chain entry: %s\n"), name);
6846
6847 SUBSPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6848 strcpy (SUBSPACE_NAME (chain_entry), name);
6849
6850 /* Initialize subspace_defined. When we hit a .subspace directive
6851 we'll set it to 1 which "locks-in" the subspace attributes. */
6852 SUBSPACE_DEFINED (chain_entry) = 0;
6853
6854 chain_entry->ssd_subseg = 0;
6855 chain_entry->ssd_seg = seg;
6856 chain_entry->ssd_next = NULL;
6857
6858 /* Find spot for the new subspace based on its sort key. */
6859 if (space->sd_subspaces == NULL)
6860 space->sd_subspaces = chain_entry;
6861 else
6862 {
6863 ssd_chain_struct *chain_pointer;
6864 ssd_chain_struct *prev_chain_pointer;
6865
6866 chain_pointer = space->sd_subspaces;
6867 prev_chain_pointer = NULL;
6868
6869 while (chain_pointer)
6870 {
6871 prev_chain_pointer = chain_pointer;
6872 chain_pointer = chain_pointer->ssd_next;
6873 }
6874
6875 /* Now we have somewhere to put the new entry. Insert it and update
6876 the links. */
6877 if (prev_chain_pointer)
6878 {
6879 chain_entry->ssd_next = chain_pointer;
6880 prev_chain_pointer->ssd_next = chain_entry;
6881 }
6882 else
6883 {
6884 space->sd_subspaces = chain_entry;
6885 chain_entry->ssd_next = chain_pointer;
6886 }
6887 }
6888
6889 #ifdef obj_set_subsection_attributes
6890 obj_set_subsection_attributes (seg, space->sd_seg, access,
6891 sort, quadrant);
6892 #endif
6893
6894 return chain_entry;
6895 }
6896
6897 /* Update the information for the given subspace based upon the
6898 various arguments. Return the modified subspace chain entry. */
6899
6900 static ssd_chain_struct *
6901 update_subspace (space, name, loadable, code_only, common, dup_common, sort,
6902 zero, access, space_index, alignment, quadrant, section)
6903 sd_chain_struct *space;
6904 char *name;
6905 int loadable;
6906 int code_only;
6907 int common;
6908 int dup_common;
6909 int zero;
6910 int sort;
6911 int access;
6912 int space_index;
6913 int alignment;
6914 int quadrant;
6915 asection *section;
6916 {
6917 ssd_chain_struct *chain_entry;
6918
6919 chain_entry = is_defined_subspace (name);
6920
6921 #ifdef obj_set_subsection_attributes
6922 obj_set_subsection_attributes (section, space->sd_seg, access,
6923 sort, quadrant);
6924 #endif
6925
6926 return chain_entry;
6927 }
6928
6929 /* Return the space chain entry for the space with the name NAME or
6930 NULL if no such space exists. */
6931
6932 static sd_chain_struct *
6933 is_defined_space (name)
6934 char *name;
6935 {
6936 sd_chain_struct *chain_pointer;
6937
6938 for (chain_pointer = space_dict_root;
6939 chain_pointer;
6940 chain_pointer = chain_pointer->sd_next)
6941 {
6942 if (strcmp (SPACE_NAME (chain_pointer), name) == 0)
6943 return chain_pointer;
6944 }
6945
6946 /* No mapping from segment to space was found. Return NULL. */
6947 return NULL;
6948 }
6949
6950 /* Find and return the space associated with the given seg. If no mapping
6951 from the given seg to a space is found, then return NULL.
6952
6953 Unlike subspaces, the number of spaces is not expected to grow much,
6954 so a linear exhaustive search is OK here. */
6955
6956 static sd_chain_struct *
6957 pa_segment_to_space (seg)
6958 asection *seg;
6959 {
6960 sd_chain_struct *space_chain;
6961
6962 /* Walk through each space looking for the correct mapping. */
6963 for (space_chain = space_dict_root;
6964 space_chain;
6965 space_chain = space_chain->sd_next)
6966 {
6967 if (space_chain->sd_seg == seg)
6968 return space_chain;
6969 }
6970
6971 /* Mapping was not found. Return NULL. */
6972 return NULL;
6973 }
6974
6975 /* Return the space chain entry for the subspace with the name NAME or
6976 NULL if no such subspace exists.
6977
6978 Uses a linear search through all the spaces and subspaces, this may
6979 not be appropriate if we ever being placing each function in its
6980 own subspace. */
6981
6982 static ssd_chain_struct *
6983 is_defined_subspace (name)
6984 char *name;
6985 {
6986 sd_chain_struct *space_chain;
6987 ssd_chain_struct *subspace_chain;
6988
6989 /* Walk through each space. */
6990 for (space_chain = space_dict_root;
6991 space_chain;
6992 space_chain = space_chain->sd_next)
6993 {
6994 /* Walk through each subspace looking for a name which matches. */
6995 for (subspace_chain = space_chain->sd_subspaces;
6996 subspace_chain;
6997 subspace_chain = subspace_chain->ssd_next)
6998 if (strcmp (SUBSPACE_NAME (subspace_chain), name) == 0)
6999 return subspace_chain;
7000 }
7001
7002 /* Subspace wasn't found. Return NULL. */
7003 return NULL;
7004 }
7005
7006 /* Find and return the subspace associated with the given seg. If no
7007 mapping from the given seg to a subspace is found, then return NULL.
7008
7009 If we ever put each procedure/function within its own subspace
7010 (to make life easier on the compiler and linker), then this will have
7011 to become more efficient. */
7012
7013 static ssd_chain_struct *
7014 pa_subsegment_to_subspace (seg, subseg)
7015 asection *seg;
7016 subsegT subseg;
7017 {
7018 sd_chain_struct *space_chain;
7019 ssd_chain_struct *subspace_chain;
7020
7021 /* Walk through each space. */
7022 for (space_chain = space_dict_root;
7023 space_chain;
7024 space_chain = space_chain->sd_next)
7025 {
7026 if (space_chain->sd_seg == seg)
7027 {
7028 /* Walk through each subspace within each space looking for
7029 the correct mapping. */
7030 for (subspace_chain = space_chain->sd_subspaces;
7031 subspace_chain;
7032 subspace_chain = subspace_chain->ssd_next)
7033 if (subspace_chain->ssd_subseg == (int) subseg)
7034 return subspace_chain;
7035 }
7036 }
7037
7038 /* No mapping from subsegment to subspace found. Return NULL. */
7039 return NULL;
7040 }
7041
7042 /* Given a number, try and find a space with the name number.
7043
7044 Return a pointer to a space dictionary chain entry for the space
7045 that was found or NULL on failure. */
7046
7047 static sd_chain_struct *
7048 pa_find_space_by_number (number)
7049 int number;
7050 {
7051 sd_chain_struct *space_chain;
7052
7053 for (space_chain = space_dict_root;
7054 space_chain;
7055 space_chain = space_chain->sd_next)
7056 {
7057 if (SPACE_SPNUM (space_chain) == (unsigned int) number)
7058 return space_chain;
7059 }
7060
7061 /* No appropriate space found. Return NULL. */
7062 return NULL;
7063 }
7064
7065 /* Return the starting address for the given subspace. If the starting
7066 address is unknown then return zero. */
7067
7068 static unsigned int
7069 pa_subspace_start (space, quadrant)
7070 sd_chain_struct *space;
7071 int quadrant;
7072 {
7073 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
7074 is not correct for the PA OSF1 port. */
7075 if ((strcmp (SPACE_NAME (space), "$PRIVATE$") == 0) && quadrant == 1)
7076 return 0x40000000;
7077 else if (space->sd_seg == data_section && quadrant == 1)
7078 return 0x40000000;
7079 else
7080 return 0;
7081 return 0;
7082 }
7083
7084 /* FIXME. Needs documentation. */
7085 static int
7086 pa_next_subseg (space)
7087 sd_chain_struct *space;
7088 {
7089
7090 space->sd_last_subseg++;
7091 return space->sd_last_subseg;
7092 }
7093 #endif
7094
7095 /* Helper function for pa_stringer. Used to find the end of
7096 a string. */
7097
7098 static unsigned int
7099 pa_stringer_aux (s)
7100 char *s;
7101 {
7102 unsigned int c = *s & CHAR_MASK;
7103
7104 #ifdef OBJ_SOM
7105 /* We must have a valid space and subspace. */
7106 pa_check_current_space_and_subspace ();
7107 #endif
7108
7109 switch (c)
7110 {
7111 case '\"':
7112 c = NOT_A_CHAR;
7113 break;
7114 default:
7115 break;
7116 }
7117 return c;
7118 }
7119
7120 /* Handle a .STRING type pseudo-op. */
7121
7122 static void
7123 pa_stringer (append_zero)
7124 int append_zero;
7125 {
7126 char *s, num_buf[4];
7127 unsigned int c;
7128 int i;
7129
7130 /* Preprocess the string to handle PA-specific escape sequences.
7131 For example, \xDD where DD is a hexidecimal number should be
7132 changed to \OOO where OOO is an octal number. */
7133
7134 /* Skip the opening quote. */
7135 s = input_line_pointer + 1;
7136
7137 while (is_a_char (c = pa_stringer_aux (s++)))
7138 {
7139 if (c == '\\')
7140 {
7141 c = *s;
7142 switch (c)
7143 {
7144 /* Handle \x<num>. */
7145 case 'x':
7146 {
7147 unsigned int number;
7148 int num_digit;
7149 char dg;
7150 char *s_start = s;
7151
7152 /* Get pas the 'x'. */
7153 s++;
7154 for (num_digit = 0, number = 0, dg = *s;
7155 num_digit < 2
7156 && (isdigit (dg) || (dg >= 'a' && dg <= 'f')
7157 || (dg >= 'A' && dg <= 'F'));
7158 num_digit++)
7159 {
7160 if (isdigit (dg))
7161 number = number * 16 + dg - '0';
7162 else if (dg >= 'a' && dg <= 'f')
7163 number = number * 16 + dg - 'a' + 10;
7164 else
7165 number = number * 16 + dg - 'A' + 10;
7166
7167 s++;
7168 dg = *s;
7169 }
7170 if (num_digit > 0)
7171 {
7172 switch (num_digit)
7173 {
7174 case 1:
7175 sprintf (num_buf, "%02o", number);
7176 break;
7177 case 2:
7178 sprintf (num_buf, "%03o", number);
7179 break;
7180 }
7181 for (i = 0; i <= num_digit; i++)
7182 s_start[i] = num_buf[i];
7183 }
7184 break;
7185 }
7186 /* This might be a "\"", skip over the escaped char. */
7187 default:
7188 s++;
7189 break;
7190 }
7191 }
7192 }
7193 stringer (append_zero);
7194 pa_undefine_label ();
7195 }
7196
7197 /* Handle a .VERSION pseudo-op. */
7198
7199 static void
7200 pa_version (unused)
7201 int unused;
7202 {
7203 obj_version (0);
7204 pa_undefine_label ();
7205 }
7206
7207 #ifdef OBJ_SOM
7208
7209 /* Handle a .COMPILER pseudo-op. */
7210
7211 static void
7212 pa_compiler (unused)
7213 int unused;
7214 {
7215 obj_som_compiler (0);
7216 pa_undefine_label ();
7217 }
7218
7219 #endif
7220
7221 /* Handle a .COPYRIGHT pseudo-op. */
7222
7223 static void
7224 pa_copyright (unused)
7225 int unused;
7226 {
7227 obj_copyright (0);
7228 pa_undefine_label ();
7229 }
7230
7231 /* Just like a normal cons, but when finished we have to undefine
7232 the latest space label. */
7233
7234 static void
7235 pa_cons (nbytes)
7236 int nbytes;
7237 {
7238 cons (nbytes);
7239 pa_undefine_label ();
7240 }
7241
7242 /* Switch to the data space. As usual delete our label. */
7243
7244 static void
7245 pa_data (unused)
7246 int unused;
7247 {
7248 #ifdef OBJ_SOM
7249 current_space = is_defined_space ("$PRIVATE$");
7250 current_subspace
7251 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
7252 #endif
7253 s_data (0);
7254 pa_undefine_label ();
7255 }
7256
7257 /* Like float_cons, but we need to undefine our label. */
7258
7259 static void
7260 pa_float_cons (float_type)
7261 int float_type;
7262 {
7263 float_cons (float_type);
7264 pa_undefine_label ();
7265 }
7266
7267 /* Like s_fill, but delete our label when finished. */
7268
7269 static void
7270 pa_fill (unused)
7271 int unused;
7272 {
7273 #ifdef OBJ_SOM
7274 /* We must have a valid space and subspace. */
7275 pa_check_current_space_and_subspace ();
7276 #endif
7277
7278 s_fill (0);
7279 pa_undefine_label ();
7280 }
7281
7282 /* Like lcomm, but delete our label when finished. */
7283
7284 static void
7285 pa_lcomm (needs_align)
7286 int needs_align;
7287 {
7288 #ifdef OBJ_SOM
7289 /* We must have a valid space and subspace. */
7290 pa_check_current_space_and_subspace ();
7291 #endif
7292
7293 s_lcomm (needs_align);
7294 pa_undefine_label ();
7295 }
7296
7297 /* Like lsym, but delete our label when finished. */
7298
7299 static void
7300 pa_lsym (unused)
7301 int unused;
7302 {
7303 #ifdef OBJ_SOM
7304 /* We must have a valid space and subspace. */
7305 pa_check_current_space_and_subspace ();
7306 #endif
7307
7308 s_lsym (0);
7309 pa_undefine_label ();
7310 }
7311
7312 /* Switch to the text space. Like s_text, but delete our
7313 label when finished. */
7314 static void
7315 pa_text (unused)
7316 int unused;
7317 {
7318 #ifdef OBJ_SOM
7319 current_space = is_defined_space ("$TEXT$");
7320 current_subspace
7321 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
7322 #endif
7323
7324 s_text (0);
7325 pa_undefine_label ();
7326 }
7327
7328 /* On the PA relocations which involve function symbols must not be
7329 adjusted. This so that the linker can know when/how to create argument
7330 relocation stubs for indirect calls and calls to static functions.
7331
7332 "T" field selectors create DLT relative fixups for accessing
7333 globals and statics in PIC code; each DLT relative fixup creates
7334 an entry in the DLT table. The entries contain the address of
7335 the final target (eg accessing "foo" would create a DLT entry
7336 with the address of "foo").
7337
7338 Unfortunately, the HP linker doesn't take into account any addend
7339 when generating the DLT; so accessing $LIT$+8 puts the address of
7340 $LIT$ into the DLT rather than the address of $LIT$+8.
7341
7342 The end result is we can't perform relocation symbol reductions for
7343 any fixup which creates entries in the DLT (eg they use "T" field
7344 selectors).
7345
7346 Reject reductions involving symbols with external scope; such
7347 reductions make life a living hell for object file editors.
7348
7349 FIXME. Also reject R_HPPA relocations which are 32bits wide in
7350 the code space. The SOM BFD backend doesn't know how to pull the
7351 right bits out of an instruction. */
7352
7353 int
7354 hppa_fix_adjustable (fixp)
7355 fixS *fixp;
7356 {
7357 struct hppa_fix_struct *hppa_fix;
7358
7359 hppa_fix = (struct hppa_fix_struct *) fixp->tc_fix_data;
7360
7361 #ifdef OBJ_SOM
7362 /* Reject reductions of symbols in 32bit relocs. */
7363 if (fixp->fx_r_type == R_HPPA && hppa_fix->fx_r_format == 32)
7364 return 0;
7365
7366 /* Reject reductions of symbols in sym1-sym2 expressions when
7367 the fixup will occur in a CODE subspace.
7368
7369 XXX FIXME: Long term we probably want to reject all of these;
7370 for example reducing in the debug section would lose if we ever
7371 supported using the optimizing hp linker. */
7372 if (fixp->fx_addsy
7373 && fixp->fx_subsy
7374 && (hppa_fix->segment->flags & SEC_CODE))
7375 {
7376 /* Apparently sy_used_in_reloc never gets set for sub symbols. */
7377 symbol_mark_used_in_reloc (fixp->fx_subsy);
7378 return 0;
7379 }
7380
7381 /* We can't adjust any relocs that use LR% and RR% field selectors.
7382 That confuses the HP linker. */
7383 if (hppa_fix->fx_r_field == e_lrsel
7384 || hppa_fix->fx_r_field == e_rrsel
7385 || hppa_fix->fx_r_field == e_nlrsel)
7386 return 0;
7387 #endif
7388
7389 /* Reject reductions of symbols in DLT relative relocs,
7390 relocations with plabels. */
7391 if (hppa_fix->fx_r_field == e_tsel
7392 || hppa_fix->fx_r_field == e_ltsel
7393 || hppa_fix->fx_r_field == e_rtsel
7394 || hppa_fix->fx_r_field == e_psel
7395 || hppa_fix->fx_r_field == e_rpsel
7396 || hppa_fix->fx_r_field == e_lpsel)
7397 return 0;
7398
7399 if (fixp->fx_addsy && S_IS_EXTERNAL (fixp->fx_addsy))
7400 return 0;
7401
7402 /* Reject absolute calls (jumps). */
7403 if (hppa_fix->fx_r_type == R_HPPA_ABS_CALL)
7404 return 0;
7405
7406 /* Reject reductions of function symbols. */
7407 if (fixp->fx_addsy == 0 || ! S_IS_FUNCTION (fixp->fx_addsy))
7408 return 1;
7409
7410 return 0;
7411 }
7412
7413 /* Return nonzero if the fixup in FIXP will require a relocation,
7414 even it if appears that the fixup could be completely handled
7415 within GAS. */
7416
7417 int
7418 hppa_force_relocation (fixp)
7419 fixS *fixp;
7420 {
7421 struct hppa_fix_struct *hppa_fixp;
7422 int distance;
7423
7424 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
7425 #ifdef OBJ_SOM
7426 if (fixp->fx_r_type == R_HPPA_ENTRY || fixp->fx_r_type == R_HPPA_EXIT
7427 || fixp->fx_r_type == R_HPPA_BEGIN_BRTAB
7428 || fixp->fx_r_type == R_HPPA_END_BRTAB
7429 || fixp->fx_r_type == R_HPPA_BEGIN_TRY
7430 || fixp->fx_r_type == R_HPPA_END_TRY
7431 || (fixp->fx_addsy != NULL && fixp->fx_subsy != NULL
7432 && (hppa_fixp->segment->flags & SEC_CODE) != 0))
7433 return 1;
7434 #endif
7435
7436 #define arg_reloc_stub_needed(CALLER, CALLEE) \
7437 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
7438
7439 #ifdef OBJ_SOM
7440 /* It is necessary to force PC-relative calls/jumps to have a relocation
7441 entry if they're going to need either a argument relocation or long
7442 call stub. FIXME. Can't we need the same for absolute calls? */
7443 if (fixp->fx_pcrel && fixp->fx_addsy
7444 && (arg_reloc_stub_needed ((long) ((obj_symbol_type *)
7445 symbol_get_bfdsym (fixp->fx_addsy))->tc_data.ap.hppa_arg_reloc,
7446 hppa_fixp->fx_arg_reloc)))
7447 return 1;
7448 #endif
7449 distance = (fixp->fx_offset + S_GET_VALUE (fixp->fx_addsy)
7450 - md_pcrel_from (fixp));
7451 /* Now check and see if we're going to need a long-branch stub. */
7452 if (fixp->fx_r_type == R_HPPA_PCREL_CALL
7453 && (distance > 262143 || distance < -262144))
7454 return 1;
7455
7456 if (fixp->fx_r_type == R_HPPA_ABS_CALL)
7457 return 1;
7458 #undef arg_reloc_stub_needed
7459
7460 /* No need (yet) to force another relocations to be emitted. */
7461 return 0;
7462 }
7463
7464 /* Now for some ELF specific code. FIXME. */
7465 #ifdef OBJ_ELF
7466 /* Mark the end of a function so that it's possible to compute
7467 the size of the function in hppa_elf_final_processing. */
7468
7469 static void
7470 hppa_elf_mark_end_of_function ()
7471 {
7472 /* ELF does not have EXIT relocations. All we do is create a
7473 temporary symbol marking the end of the function. */
7474 char *name = (char *)
7475 xmalloc (strlen ("L$\001end_") +
7476 strlen (S_GET_NAME (last_call_info->start_symbol)) + 1);
7477
7478 if (name)
7479 {
7480 symbolS *symbolP;
7481
7482 strcpy (name, "L$\001end_");
7483 strcat (name, S_GET_NAME (last_call_info->start_symbol));
7484
7485 /* If we have a .exit followed by a .procend, then the
7486 symbol will have already been defined. */
7487 symbolP = symbol_find (name);
7488 if (symbolP)
7489 {
7490 /* The symbol has already been defined! This can
7491 happen if we have a .exit followed by a .procend.
7492
7493 This is *not* an error. All we want to do is free
7494 the memory we just allocated for the name and continue. */
7495 xfree (name);
7496 }
7497 else
7498 {
7499 /* symbol value should be the offset of the
7500 last instruction of the function */
7501 symbolP = symbol_new (name, now_seg, (valueT) (frag_now_fix () - 4),
7502 frag_now);
7503
7504 assert (symbolP);
7505 S_CLEAR_EXTERNAL (symbolP);
7506 symbol_table_insert (symbolP);
7507 }
7508
7509 if (symbolP)
7510 last_call_info->end_symbol = symbolP;
7511 else
7512 as_bad (_("Symbol '%s' could not be created."), name);
7513
7514 }
7515 else
7516 as_bad (_("No memory for symbol name."));
7517
7518 }
7519
7520 /* For ELF, this function serves one purpose: to setup the st_size
7521 field of STT_FUNC symbols. To do this, we need to scan the
7522 call_info structure list, determining st_size in by taking the
7523 difference in the address of the beginning/end marker symbols. */
7524
7525 void
7526 elf_hppa_final_processing ()
7527 {
7528 struct call_info *call_info_pointer;
7529
7530 for (call_info_pointer = call_info_root;
7531 call_info_pointer;
7532 call_info_pointer = call_info_pointer->ci_next)
7533 {
7534 elf_symbol_type *esym
7535 = ((elf_symbol_type *)
7536 symbol_get_bfdsym (call_info_pointer->start_symbol));
7537 esym->internal_elf_sym.st_size =
7538 S_GET_VALUE (call_info_pointer->end_symbol)
7539 - S_GET_VALUE (call_info_pointer->start_symbol) + 4;
7540 }
7541 }
7542 #endif
7543
7544 #ifdef OBJ_ELF
7545 pa_end_of_source ()
7546 {
7547 if (debug_type == DEBUG_DWARF2)
7548 dwarf2_finish ();
7549 }
7550 #endif
GDB Binutils - Deliverables
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