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* elf-hppa.h (elf_hppa_fake_sections): New function.
[deliverable/binutils-gdb.git] / gas / config / tc-hppa.c
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252b5132 1/* tc-hppa.c -- Assemble for the PA
49309057
ILT		 2 Copyright (C) 1989, 93, 94, 95, 96, 97, 98, 1999
3 Free Software Foundation, Inc.
252b5132
RH		 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
49863f82
JL		 38#if defined (OBJ_ELF) && defined (OBJ_SOM)
39error only one of OBJ_ELF and OBJ_SOM can be defined
40#endif
41
252b5132
RH		 42/* A "convient" place to put object file dependencies which do
43 not need to be seen outside of tc-hppa.c. */
44#ifdef OBJ_ELF
252b5132 45/* Object file formats specify relocation types. */
b388df87 46typedef elf_hppa_reloc_type reloc_type;
252b5132
RH		 47
48/* Object file formats specify BFD symbol types. */
49typedef elf_symbol_type obj_symbol_type;
50
b388df87 51#ifdef BFD64
252b5132 52/* How to generate a relocation. */
b388df87
JL		 53#define hppa_gen_reloc_type _bfd_elf64_hppa_gen_reloc_type
54#else
55#define hppa_gen_reloc_type _bfd_elf32_hppa_gen_reloc_type
56#endif
252b5132
RH		 57
58/* ELF objects can have versions, but apparently do not have anywhere
59 to store a copyright string. */
60#define obj_version obj_elf_version
61#define obj_copyright obj_elf_version
46031ca9
JL		 62
63#define UNWIND_SECTION_NAME ".PARISC.unwind"
252b5132
RH		 64#endif
65
66#ifdef OBJ_SOM
67/* Names of various debugging spaces/subspaces. */
68#define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
69#define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
70#define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
71#define UNWIND_SECTION_NAME "$UNWIND$"
72
73/* Object file formats specify relocation types. */
74typedef int reloc_type;
75
76/* SOM objects can have both a version string and a copyright string. */
77#define obj_version obj_som_version
78#define obj_copyright obj_som_copyright
79
252b5132
RH		 80/* How to generate a relocation. */
81#define hppa_gen_reloc_type hppa_som_gen_reloc_type
82
83/* Object file formats specify BFD symbol types. */
84typedef som_symbol_type obj_symbol_type;
85
86/* This apparently isn't in older versions of hpux reloc.h. */
87#ifndef R_DLT_REL
88#define R_DLT_REL 0x78
89#endif
90#endif
91
92#ifndef R_N0SEL
93#define R_N0SEL 0xd8
94#endif
95
96#ifndef R_N1SEL
97#define R_N1SEL 0xd9
98#endif
99
100/* Various structures and types used internally in tc-hppa.c. */
101
102/* Unwind table and descriptor. FIXME: Sync this with GDB version. */
103
104struct unwind_desc
105 {
106 unsigned int cannot_unwind:1;
107 unsigned int millicode:1;
108 unsigned int millicode_save_rest:1;
109 unsigned int region_desc:2;
110 unsigned int save_sr:2;
111 unsigned int entry_fr:4;
112 unsigned int entry_gr:5;
113 unsigned int args_stored:1;
114 unsigned int call_fr:5;
115 unsigned int call_gr:5;
116 unsigned int save_sp:1;
117 unsigned int save_rp:1;
118 unsigned int save_rp_in_frame:1;
119 unsigned int extn_ptr_defined:1;
120 unsigned int cleanup_defined:1;
121
122 unsigned int hpe_interrupt_marker:1;
123 unsigned int hpux_interrupt_marker:1;
124 unsigned int reserved:3;
125 unsigned int frame_size:27;
126 };
127
128struct unwind_table
129 {
130 /* Starting and ending offsets of the region described by
131 descriptor. */
132 unsigned int start_offset;
133 unsigned int end_offset;
134 struct unwind_desc descriptor;
135 };
136
137/* This structure is used by the .callinfo, .enter, .leave pseudo-ops to
138 control the entry and exit code they generate. It is also used in
139 creation of the correct stack unwind descriptors.
140
141 NOTE: GAS does not support .enter and .leave for the generation of
142 prologues and epilogues. FIXME.
143
144 The fields in structure roughly correspond to the arguments available on the
145 .callinfo pseudo-op. */
146
147struct call_info
148 {
149 /* The unwind descriptor being built. */
150 struct unwind_table ci_unwind;
151
152 /* Name of this function. */
153 symbolS *start_symbol;
154
155 /* (temporary) symbol used to mark the end of this function. */
156 symbolS *end_symbol;
157
158 /* Next entry in the chain. */
159 struct call_info *ci_next;
160 };
161
162/* Operand formats for FP instructions. Note not all FP instructions
163 allow all four formats to be used (for example fmpysub only allows
164 SGL and DBL). */
165typedef enum
166 {
167 SGL, DBL, ILLEGAL_FMT, QUAD, W, UW, DW, UDW, QW, UQW
168 }
169fp_operand_format;
170
171/* This fully describes the symbol types which may be attached to
172 an EXPORT or IMPORT directive. Only SOM uses this formation
173 (ELF has no need for it). */
174typedef enum
175 {
176 SYMBOL_TYPE_UNKNOWN,
177 SYMBOL_TYPE_ABSOLUTE,
178 SYMBOL_TYPE_CODE,
179 SYMBOL_TYPE_DATA,
180 SYMBOL_TYPE_ENTRY,
181 SYMBOL_TYPE_MILLICODE,
182 SYMBOL_TYPE_PLABEL,
183 SYMBOL_TYPE_PRI_PROG,
184 SYMBOL_TYPE_SEC_PROG,
185 }
186pa_symbol_type;
187
188/* This structure contains information needed to assemble
189 individual instructions. */
190struct pa_it
191 {
192 /* Holds the opcode after parsing by pa_ip. */
193 unsigned long opcode;
194
195 /* Holds an expression associated with the current instruction. */
196 expressionS exp;
197
198 /* Does this instruction use PC-relative addressing. */
199 int pcrel;
200
201 /* Floating point formats for operand1 and operand2. */
202 fp_operand_format fpof1;
203 fp_operand_format fpof2;
204
205
206 /* Holds the field selector for this instruction
207 (for example L%, LR%, etc). */
208 long field_selector;
209
210 /* Holds any argument relocation bits associated with this
211 instruction. (instruction should be some sort of call). */
212 long arg_reloc;
213
214 /* The format specification for this instruction. */
215 int format;
216
217 /* The relocation (if any) associated with this instruction. */
218 reloc_type reloc;
219 };
220
221/* PA-89 floating point registers are arranged like this:
222
223
224 +--------------+--------------+
225 | 0 or 16L | 16 or 16R |
226 +--------------+--------------+
227 | 1 or 17L | 17 or 17R |
228 +--------------+--------------+
229 | | |
230
231 . . .
232 . . .
233 . . .
234
235 | | |
236 +--------------+--------------+
237 | 14 or 30L | 30 or 30R |
238 +--------------+--------------+
239 | 15 or 31L | 31 or 31R |
240 +--------------+--------------+
241
242
243 The following is a version of pa_parse_number that
244 handles the L/R notation and returns the correct
245 value to put into the instruction register field.
246 The correct value to put into the instruction is
247 encoded in the structure 'pa_11_fp_reg_struct'. */
248
249struct pa_11_fp_reg_struct
250 {
251 /* The register number. */
252 char number_part;
253
254 /* L/R selector. */
255 char l_r_select;
256 };
257
258/* Additional information needed to build argument relocation stubs. */
259struct call_desc
260 {
261 /* The argument relocation specification. */
262 unsigned int arg_reloc;
263
264 /* Number of arguments. */
265 unsigned int arg_count;
266 };
267
49863f82 268#ifdef OBJ_SOM
252b5132
RH		 269/* This structure defines an entry in the subspace dictionary
270 chain. */
271
272struct subspace_dictionary_chain
273 {
274 /* Nonzero if this space has been defined by the user code. */
275 unsigned int ssd_defined;
276
277 /* Name of this subspace. */
278 char *ssd_name;
279
280 /* GAS segment and subsegment associated with this subspace. */
281 asection *ssd_seg;
282 int ssd_subseg;
283
284 /* Next space in the subspace dictionary chain. */
285 struct subspace_dictionary_chain *ssd_next;
286 };
287
288typedef struct subspace_dictionary_chain ssd_chain_struct;
289
290/* This structure defines an entry in the subspace dictionary
291 chain. */
292
293struct space_dictionary_chain
294 {
295 /* Nonzero if this space has been defined by the user code or
296 as a default space. */
297 unsigned int sd_defined;
298
299 /* Nonzero if this spaces has been defined by the user code. */
300 unsigned int sd_user_defined;
301
302 /* The space number (or index). */
303 unsigned int sd_spnum;
304
305 /* The name of this subspace. */
306 char *sd_name;
307
308 /* GAS segment to which this subspace corresponds. */
309 asection *sd_seg;
310
311 /* Current subsegment number being used. */
312 int sd_last_subseg;
313
314 /* The chain of subspaces contained within this space. */
315 ssd_chain_struct *sd_subspaces;
316
317 /* The next entry in the space dictionary chain. */
318 struct space_dictionary_chain *sd_next;
319 };
320
321typedef struct space_dictionary_chain sd_chain_struct;
322
252b5132
RH		 323/* This structure defines attributes of the default subspace
324 dictionary entries. */
325
326struct default_subspace_dict
327 {
328 /* Name of the subspace. */
329 char *name;
330
331 /* FIXME. Is this still needed? */
332 char defined;
333
334 /* Nonzero if this subspace is loadable. */
335 char loadable;
336
337 /* Nonzero if this subspace contains only code. */
338 char code_only;
339
340 /* Nonzero if this is a common subspace. */
341 char common;
342
343 /* Nonzero if this is a common subspace which allows symbols
344 to be multiply defined. */
345 char dup_common;
346
347 /* Nonzero if this subspace should be zero filled. */
348 char zero;
349
350 /* Sort key for this subspace. */
351 unsigned char sort;
352
353 /* Access control bits for this subspace. Can represent RWX access
354 as well as privilege level changes for gateways. */
355 int access;
356
357 /* Index of containing space. */
358 int space_index;
359
360 /* Alignment (in bytes) of this subspace. */
361 int alignment;
362
363 /* Quadrant within space where this subspace should be loaded. */
364 int quadrant;
365
366 /* An index into the default spaces array. */
367 int def_space_index;
368
252b5132
RH		 369 /* Subsegment associated with this subspace. */
370 subsegT subsegment;
371 };
372
373/* This structure defines attributes of the default space
374 dictionary entries. */
375
376struct default_space_dict
377 {
378 /* Name of the space. */
379 char *name;
380
381 /* Space number. It is possible to identify spaces within
382 assembly code numerically! */
383 int spnum;
384
385 /* Nonzero if this space is loadable. */
386 char loadable;
387
388 /* Nonzero if this space is "defined". FIXME is still needed */
389 char defined;
390
391 /* Nonzero if this space can not be shared. */
392 char private;
393
394 /* Sort key for this space. */
395 unsigned char sort;
396
397 /* Segment associated with this space. */
398 asection *segment;
252b5132 399 };
49863f82
JL		 400#endif
401
402/* Structure for previous label tracking. Needed so that alignments,
403 callinfo declarations, etc can be easily attached to a particular
404 label. */
405typedef struct label_symbol_struct
406 {
407 struct symbol *lss_label;
408#ifdef OBJ_SOM
409 sd_chain_struct *lss_space;
410#endif
411#ifdef OBJ_ELF
412 segT lss_segment;
413#endif
414 struct label_symbol_struct *lss_next;
415 }
416label_symbol_struct;
252b5132
RH		 417
418/* Extra information needed to perform fixups (relocations) on the PA. */
419struct hppa_fix_struct
420 {
421 /* The field selector. */
422 enum hppa_reloc_field_selector_type_alt fx_r_field;
423
424 /* Type of fixup. */
425 int fx_r_type;
426
427 /* Format of fixup. */
428 int fx_r_format;
429
430 /* Argument relocation bits. */
431 long fx_arg_reloc;
432
433 /* The segment this fixup appears in. */
434 segT segment;
435 };
436
437/* Structure to hold information about predefined registers. */
438
439struct pd_reg
440 {
441 char *name;
442 int value;
443 };
444
445/* This structure defines the mapping from a FP condition string
446 to a condition number which can be recorded in an instruction. */
447struct fp_cond_map
448 {
449 char *string;
450 int cond;
451 };
452
453/* This structure defines a mapping from a field selector
454 string to a field selector type. */
455struct selector_entry
456 {
457 char *prefix;
458 int field_selector;
459 };
460
461/* Prototypes for functions local to tc-hppa.c. */
462
49863f82 463#ifdef OBJ_SOM
252b5132 464static void pa_check_current_space_and_subspace PARAMS ((void));
49863f82
JL		 465#endif
466
252b5132
RH		 467static fp_operand_format pa_parse_fp_format PARAMS ((char **s));
468static void pa_cons PARAMS ((int));
469static void pa_data PARAMS ((int));
470static void pa_float_cons PARAMS ((int));
471static void pa_fill PARAMS ((int));
472static void pa_lcomm PARAMS ((int));
473static void pa_lsym PARAMS ((int));
474static void pa_stringer PARAMS ((int));
475static void pa_text PARAMS ((int));
476static void pa_version PARAMS ((int));
477static int pa_parse_fp_cmp_cond PARAMS ((char **));
478static int get_expression PARAMS ((char *));
479static int pa_get_absolute_expression PARAMS ((struct pa_it *, char **));
480static int evaluate_absolute PARAMS ((struct pa_it *));
481static unsigned int pa_build_arg_reloc PARAMS ((char *));
482static unsigned int pa_align_arg_reloc PARAMS ((unsigned int, unsigned int));
483static int pa_parse_nullif PARAMS ((char **));
484static int pa_parse_nonneg_cmpsub_cmpltr PARAMS ((char **, int));
485static int pa_parse_neg_cmpsub_cmpltr PARAMS ((char **, int));
486static int pa_parse_neg_add_cmpltr PARAMS ((char **, int));
487static int pa_parse_nonneg_add_cmpltr PARAMS ((char **, int));
252b5132
RH		 488static void pa_block PARAMS ((int));
489static void pa_brtab PARAMS ((int));
490static void pa_try PARAMS ((int));
491static void pa_call PARAMS ((int));
492static void pa_call_args PARAMS ((struct call_desc *));
493static void pa_callinfo PARAMS ((int));
494static void pa_code PARAMS ((int));
495static void pa_comm PARAMS ((int));
252b5132
RH		 496static void pa_copyright PARAMS ((int));
497static void pa_end PARAMS ((int));
498static void pa_enter PARAMS ((int));
499static void pa_entry PARAMS ((int));
500static void pa_equ PARAMS ((int));
501static void pa_exit PARAMS ((int));
502static void pa_export PARAMS ((int));
503static void pa_type_args PARAMS ((symbolS *, int));
504static void pa_import PARAMS ((int));
505static void pa_label PARAMS ((int));
506static void pa_leave PARAMS ((int));
507static void pa_level PARAMS ((int));
508static void pa_origin PARAMS ((int));
509static void pa_proc PARAMS ((int));
510static void pa_procend PARAMS ((int));
252b5132
RH		 511static void pa_param PARAMS ((int));
512static void pa_undefine_label PARAMS ((void));
513static int need_pa11_opcode PARAMS ((struct pa_it *,
514 struct pa_11_fp_reg_struct *));
515static int pa_parse_number PARAMS ((char **, struct pa_11_fp_reg_struct *));
516static label_symbol_struct *pa_get_label PARAMS ((void));
49863f82
JL		 517#ifdef OBJ_SOM
518static void pa_compiler PARAMS ((int));
519static void pa_align PARAMS ((int));
520static void pa_space PARAMS ((int));
521static void pa_spnum PARAMS ((int));
522static void pa_subspace PARAMS ((int));
252b5132
RH		 523static sd_chain_struct *create_new_space PARAMS ((char *, int, int,
524 int, int, int,
525 asection *, int));
526static ssd_chain_struct *create_new_subspace PARAMS ((sd_chain_struct *,
527 char *, int, int,
528 int, int, int,
529 int, int, int, int,
530 int, asection *));
531static ssd_chain_struct *update_subspace PARAMS ((sd_chain_struct *,
532 char *, int, int, int,
533 int, int, int, int,
534 int, int, int,
535 asection *));
536static sd_chain_struct *is_defined_space PARAMS ((char *));
537static ssd_chain_struct *is_defined_subspace PARAMS ((char *));
538static sd_chain_struct *pa_segment_to_space PARAMS ((asection *));
539static ssd_chain_struct *pa_subsegment_to_subspace PARAMS ((asection *,
540 subsegT));
541static sd_chain_struct *pa_find_space_by_number PARAMS ((int));
542static unsigned int pa_subspace_start PARAMS ((sd_chain_struct *, int));
49863f82
JL		 543static sd_chain_struct *pa_parse_space_stmt PARAMS ((char *, int));
544static int pa_next_subseg PARAMS ((sd_chain_struct *));
545static void pa_spaces_begin PARAMS ((void));
546#endif
252b5132
RH		 547static void pa_ip PARAMS ((char *));
548static void fix_new_hppa PARAMS ((fragS *, int, int, symbolS *,
549 long, expressionS *, int,
550 bfd_reloc_code_real_type,
551 enum hppa_reloc_field_selector_type_alt,
552 int, long, int *));
553static int is_end_of_statement PARAMS ((void));
554static int reg_name_search PARAMS ((char *));
555static int pa_chk_field_selector PARAMS ((char **));
556static int is_same_frag PARAMS ((fragS *, fragS *));
557static void process_exit PARAMS ((void));
252b5132 558static int log2 PARAMS ((int));
252b5132 559static unsigned int pa_stringer_aux PARAMS ((char *));
252b5132
RH		 560
561#ifdef OBJ_ELF
562static void hppa_elf_mark_end_of_function PARAMS ((void));
563static void pa_build_unwind_subspace PARAMS ((struct call_info *));
564#endif
565
566/* File and gloally scoped variable declarations. */
567
49863f82 568#ifdef OBJ_SOM
252b5132
RH		 569/* Root and final entry in the space chain. */
570static sd_chain_struct *space_dict_root;
571static sd_chain_struct *space_dict_last;
572
573/* The current space and subspace. */
574static sd_chain_struct *current_space;
575static ssd_chain_struct *current_subspace;
49863f82 576#endif
252b5132
RH		 577
578/* Root of the call_info chain. */
579static struct call_info *call_info_root;
580
581/* The last call_info (for functions) structure
582 seen so it can be associated with fixups and
583 function labels. */
584static struct call_info *last_call_info;
585
586/* The last call description (for actual calls). */
587static struct call_desc last_call_desc;
588
589/* handle of the OPCODE hash table */
590static struct hash_control *op_hash = NULL;
591
592/* This array holds the chars that always start a comment. If the
593 pre-processor is disabled, these aren't very useful. */
594const char comment_chars[] = ";";
595
596/* Table of pseudo ops for the PA. FIXME -- how many of these
597 are now redundant with the overall GAS and the object file
598 dependent tables? */
599const pseudo_typeS md_pseudo_table[] =
600{
601 /* align pseudo-ops on the PA specify the actual alignment requested,
602 not the log2 of the requested alignment. */
49863f82 603#ifdef OBJ_SOM
252b5132 604 {"align", pa_align, 8},
49863f82
JL		 605#endif
606#ifdef OBJ_ELF
607 {"align", s_align_bytes, 8},
608#endif
252b5132
RH		 609 {"begin_brtab", pa_brtab, 1},
610 {"begin_try", pa_try, 1},
611 {"block", pa_block, 1},
612 {"blockz", pa_block, 0},
613 {"byte", pa_cons, 1},
614 {"call", pa_call, 0},
615 {"callinfo", pa_callinfo, 0},
616 {"code", pa_code, 0},
617 {"comm", pa_comm, 0},
618#ifdef OBJ_SOM
619 {"compiler", pa_compiler, 0},
620#endif
621 {"copyright", pa_copyright, 0},
622 {"data", pa_data, 0},
623 {"double", pa_float_cons, 'd'},
077db52a 624 {"dword", pa_cons, 8},
252b5132
RH		 625 {"end", pa_end, 0},
626 {"end_brtab", pa_brtab, 0},
627 {"end_try", pa_try, 0},
628 {"enter", pa_enter, 0},
629 {"entry", pa_entry, 0},
630 {"equ", pa_equ, 0},
631 {"exit", pa_exit, 0},
632 {"export", pa_export, 0},
633 {"fill", pa_fill, 0},
634 {"float", pa_float_cons, 'f'},
635 {"half", pa_cons, 2},
636 {"import", pa_import, 0},
637 {"int", pa_cons, 4},
638 {"label", pa_label, 0},
639 {"lcomm", pa_lcomm, 0},
640 {"leave", pa_leave, 0},
641 {"level", pa_level, 0},
642 {"long", pa_cons, 4},
643 {"lsym", pa_lsym, 0},
49863f82 644#ifdef OBJ_SOM
252b5132 645 {"nsubspa", pa_subspace, 1},
49863f82 646#endif
252b5132
RH		 647 {"octa", pa_cons, 16},
648 {"org", pa_origin, 0},
649 {"origin", pa_origin, 0},
650 {"param", pa_param, 0},
651 {"proc", pa_proc, 0},
652 {"procend", pa_procend, 0},
653 {"quad", pa_cons, 8},
654 {"reg", pa_equ, 1},
655 {"short", pa_cons, 2},
656 {"single", pa_float_cons, 'f'},
49863f82 657#ifdef OBJ_SOM
252b5132
RH		 658 {"space", pa_space, 0},
659 {"spnum", pa_spnum, 0},
49863f82 660#endif
252b5132
RH		 661 {"string", pa_stringer, 0},
662 {"stringz", pa_stringer, 1},
49863f82 663#ifdef OBJ_SOM
252b5132 664 {"subspa", pa_subspace, 0},
49863f82 665#endif
252b5132
RH		 666 {"text", pa_text, 0},
667 {"version", pa_version, 0},
668 {"word", pa_cons, 4},
669 {NULL, 0, 0}
670};
671
672/* This array holds the chars that only start a comment at the beginning of
673 a line. If the line seems to have the form '# 123 filename'
674 .line and .file directives will appear in the pre-processed output.
675
676 Note that input_file.c hand checks for '#' at the beginning of the
677 first line of the input file. This is because the compiler outputs
678 #NO_APP at the beginning of its output.
679
680 Also note that C style comments will always work. */
681const char line_comment_chars[] = "#";
682
683/* This array holds the characters which act as line separators. */
684const char line_separator_chars[] = "!";
685
686/* Chars that can be used to separate mant from exp in floating point nums. */
687const char EXP_CHARS[] = "eE";
688
689/* Chars that mean this number is a floating point constant.
690 As in 0f12.456 or 0d1.2345e12.
691
692 Be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
693 changed in read.c. Ideally it shouldn't hae to know abou it at
694 all, but nothing is ideal around here. */
695const char FLT_CHARS[] = "rRsSfFdDxXpP";
696
697static struct pa_it the_insn;
698
699/* Points to the end of an expression just parsed by get_expressoin
700 and friends. FIXME. This shouldn't be handled with a file-global
701 variable. */
702static char *expr_end;
703
704/* Nonzero if a .callinfo appeared within the current procedure. */
705static int callinfo_found;
706
707/* Nonzero if the assembler is currently within a .entry/.exit pair. */
708static int within_entry_exit;
709
710/* Nonzero if the assembler is currently within a procedure definition. */
711static int within_procedure;
712
713/* Handle on strucutre which keep track of the last symbol
714 seen in each subspace. */
715static label_symbol_struct *label_symbols_rootp = NULL;
716
717/* Holds the last field selector. */
718static int hppa_field_selector;
719
993142d5 720#ifdef OBJ_SOM
252b5132
RH		 721/* A dummy bfd symbol so that all relocations have symbols of some kind. */
722static symbolS *dummy_symbol;
993142d5 723#endif
252b5132
RH		 724
725/* Nonzero if errors are to be printed. */
726static int print_errors = 1;
727
728/* List of registers that are pre-defined:
729
730 Each general register has one predefined name of the form
731 %r<REGNUM> which has the value <REGNUM>.
732
733 Space and control registers are handled in a similar manner,
734 but use %sr<REGNUM> and %cr<REGNUM> as their predefined names.
735
736 Likewise for the floating point registers, but of the form
737 %fr<REGNUM>. Floating point registers have additional predefined
738 names with 'L' and 'R' suffixes (e.g. %fr19L, %fr19R) which
739 again have the value <REGNUM>.
740
741 Many registers also have synonyms:
742
743 %r26 - %r23 have %arg0 - %arg3 as synonyms
744 %r28 - %r29 have %ret0 - %ret1 as synonyms
745 %r30 has %sp as a synonym
746 %r27 has %dp as a synonym
747 %r2 has %rp as a synonym
748
749 Almost every control register has a synonym; they are not listed
750 here for brevity.
751
752 The table is sorted. Suitable for searching by a binary search. */
753
754static const struct pd_reg pre_defined_registers[] =
755{
756 {"%arg0", 26},
757 {"%arg1", 25},
758 {"%arg2", 24},
759 {"%arg3", 23},
760 {"%cr0", 0},
761 {"%cr10", 10},
762 {"%cr11", 11},
763 {"%cr12", 12},
764 {"%cr13", 13},
765 {"%cr14", 14},
766 {"%cr15", 15},
767 {"%cr16", 16},
768 {"%cr17", 17},
769 {"%cr18", 18},
770 {"%cr19", 19},
771 {"%cr20", 20},
772 {"%cr21", 21},
773 {"%cr22", 22},
774 {"%cr23", 23},
775 {"%cr24", 24},
776 {"%cr25", 25},
777 {"%cr26", 26},
778 {"%cr27", 27},
779 {"%cr28", 28},
780 {"%cr29", 29},
781 {"%cr30", 30},
782 {"%cr31", 31},
783 {"%cr8", 8},
784 {"%cr9", 9},
785 {"%dp", 27},
786 {"%eiem", 15},
787 {"%eirr", 23},
788 {"%fr0", 0},
789 {"%fr0l", 0},
790 {"%fr0r", 0},
791 {"%fr1", 1},
792 {"%fr10", 10},
793 {"%fr10l", 10},
794 {"%fr10r", 10},
795 {"%fr11", 11},
796 {"%fr11l", 11},
797 {"%fr11r", 11},
798 {"%fr12", 12},
799 {"%fr12l", 12},
800 {"%fr12r", 12},
801 {"%fr13", 13},
802 {"%fr13l", 13},
803 {"%fr13r", 13},
804 {"%fr14", 14},
805 {"%fr14l", 14},
806 {"%fr14r", 14},
807 {"%fr15", 15},
808 {"%fr15l", 15},
809 {"%fr15r", 15},
810 {"%fr16", 16},
811 {"%fr16l", 16},
812 {"%fr16r", 16},
813 {"%fr17", 17},
814 {"%fr17l", 17},
815 {"%fr17r", 17},
816 {"%fr18", 18},
817 {"%fr18l", 18},
818 {"%fr18r", 18},
819 {"%fr19", 19},
820 {"%fr19l", 19},
821 {"%fr19r", 19},
822 {"%fr1l", 1},
823 {"%fr1r", 1},
824 {"%fr2", 2},
825 {"%fr20", 20},
826 {"%fr20l", 20},
827 {"%fr20r", 20},
828 {"%fr21", 21},
829 {"%fr21l", 21},
830 {"%fr21r", 21},
831 {"%fr22", 22},
832 {"%fr22l", 22},
833 {"%fr22r", 22},
834 {"%fr23", 23},
835 {"%fr23l", 23},
836 {"%fr23r", 23},
837 {"%fr24", 24},
838 {"%fr24l", 24},
839 {"%fr24r", 24},
840 {"%fr25", 25},
841 {"%fr25l", 25},
842 {"%fr25r", 25},
843 {"%fr26", 26},
844 {"%fr26l", 26},
845 {"%fr26r", 26},
846 {"%fr27", 27},
847 {"%fr27l", 27},
848 {"%fr27r", 27},
849 {"%fr28", 28},
850 {"%fr28l", 28},
851 {"%fr28r", 28},
852 {"%fr29", 29},
853 {"%fr29l", 29},
854 {"%fr29r", 29},
855 {"%fr2l", 2},
856 {"%fr2r", 2},
857 {"%fr3", 3},
858 {"%fr30", 30},
859 {"%fr30l", 30},
860 {"%fr30r", 30},
861 {"%fr31", 31},
862 {"%fr31l", 31},
863 {"%fr31r", 31},
864 {"%fr3l", 3},
865 {"%fr3r", 3},
866 {"%fr4", 4},
867 {"%fr4l", 4},
868 {"%fr4r", 4},
869 {"%fr5", 5},
870 {"%fr5l", 5},
871 {"%fr5r", 5},
872 {"%fr6", 6},
873 {"%fr6l", 6},
874 {"%fr6r", 6},
875 {"%fr7", 7},
876 {"%fr7l", 7},
877 {"%fr7r", 7},
878 {"%fr8", 8},
879 {"%fr8l", 8},
880 {"%fr8r", 8},
881 {"%fr9", 9},
882 {"%fr9l", 9},
883 {"%fr9r", 9},
884 {"%hta", 25},
885 {"%iir", 19},
886 {"%ior", 21},
887 {"%ipsw", 22},
888 {"%isr", 20},
889 {"%itmr", 16},
890 {"%iva", 14},
891 {"%pcoq", 18},
892 {"%pcsq", 17},
893 {"%pidr1", 8},
894 {"%pidr2", 9},
895 {"%pidr3", 12},
896 {"%pidr4", 13},
897 {"%ppda", 24},
898 {"%r0", 0},
899 {"%r1", 1},
900 {"%r10", 10},
901 {"%r11", 11},
902 {"%r12", 12},
903 {"%r13", 13},
904 {"%r14", 14},
905 {"%r15", 15},
906 {"%r16", 16},
907 {"%r17", 17},
908 {"%r18", 18},
909 {"%r19", 19},
910 {"%r2", 2},
911 {"%r20", 20},
912 {"%r21", 21},
913 {"%r22", 22},
914 {"%r23", 23},
915 {"%r24", 24},
916 {"%r25", 25},
917 {"%r26", 26},
918 {"%r27", 27},
919 {"%r28", 28},
920 {"%r29", 29},
921 {"%r3", 3},
922 {"%r30", 30},
923 {"%r31", 31},
924 {"%r4", 4},
925 {"%r5", 5},
926 {"%r6", 6},
927 {"%r7", 7},
928 {"%r8", 8},
929 {"%r9", 9},
930 {"%rctr", 0},
931 {"%ret0", 28},
932 {"%ret1", 29},
933 {"%rp", 2},
934 {"%sar", 11},
935 {"%sp", 30},
936 {"%sr0", 0},
937 {"%sr1", 1},
938 {"%sr2", 2},
939 {"%sr3", 3},
940 {"%sr4", 4},
941 {"%sr5", 5},
942 {"%sr6", 6},
943 {"%sr7", 7},
944 {"%tr0", 24},
945 {"%tr1", 25},
946 {"%tr2", 26},
947 {"%tr3", 27},
948 {"%tr4", 28},
949 {"%tr5", 29},
950 {"%tr6", 30},
951 {"%tr7", 31}
952};
953
954/* This table is sorted by order of the length of the string. This is
955 so we check for <> before we check for <. If we had a <> and checked
956 for < first, we would get a false match. */
957static const struct fp_cond_map fp_cond_map[] =
958{
959 {"false?", 0},
960 {"false", 1},
961 {"true?", 30},
962 {"true", 31},
963 {"!<=>", 3},
964 {"!?>=", 8},
965 {"!?<=", 16},
966 {"!<>", 7},
967 {"!>=", 11},
968 {"!?>", 12},
969 {"?<=", 14},
970 {"!<=", 19},
971 {"!?<", 20},
972 {"?>=", 22},
973 {"!?=", 24},
974 {"!=t", 27},
975 {"<=>", 29},
976 {"=t", 5},
977 {"?=", 6},
978 {"?<", 10},
979 {"<=", 13},
980 {"!>", 15},
981 {"?>", 18},
982 {">=", 21},
983 {"!<", 23},
984 {"<>", 25},
985 {"!=", 26},
986 {"!?", 28},
987 {"?", 2},
988 {"=", 4},
989 {"<", 9},
990 {">", 17}
991};
992
993static const struct selector_entry selector_table[] =
994{
995 {"f", e_fsel},
996 {"l", e_lsel},
997 {"ld", e_ldsel},
998 {"lp", e_lpsel},
999 {"lr", e_lrsel},
1000 {"ls", e_lssel},
1001 {"lt", e_ltsel},
39ba5561 1002 {"ltp", e_ltpsel},
252b5132
RH		 1003 {"n", e_nsel},
1004 {"nl", e_nlsel},
1005 {"nlr", e_nlrsel},
1006 {"p", e_psel},
1007 {"r", e_rsel},
1008 {"rd", e_rdsel},
1009 {"rp", e_rpsel},
1010 {"rr", e_rrsel},
1011 {"rs", e_rssel},
1012 {"rt", e_rtsel},
39ba5561 1013 {"rtp", e_rtpsel},
252b5132
RH		 1014 {"t", e_tsel},
1015};
1016
49863f82 1017#ifdef OBJ_SOM
252b5132
RH		 1018/* default space and subspace dictionaries */
1019
1020#define GDB_SYMBOLS GDB_SYMBOLS_SUBSPACE_NAME
1021#define GDB_STRINGS GDB_STRINGS_SUBSPACE_NAME
1022
1023/* pre-defined subsegments (subspaces) for the HPPA. */
1024#define SUBSEG_CODE 0
1025#define SUBSEG_LIT 1
1026#define SUBSEG_MILLI 2
1027#define SUBSEG_DATA 0
1028#define SUBSEG_BSS 2
1029#define SUBSEG_UNWIND 3
1030#define SUBSEG_GDB_STRINGS 0
1031#define SUBSEG_GDB_SYMBOLS 1
1032
1033static struct default_subspace_dict pa_def_subspaces[] =
1034{
49863f82
JL		 1035 {"$CODE$", 1, 1, 1, 0, 0, 0, 24, 0x2c, 0, 8, 0, 0, SUBSEG_CODE},
1036 {"$DATA$", 1, 1, 0, 0, 0, 0, 24, 0x1f, 1, 8, 1, 1, SUBSEG_DATA},
1037 {"$LIT$", 1, 1, 0, 0, 0, 0, 16, 0x2c, 0, 8, 0, 0, SUBSEG_LIT},
1038 {"$MILLICODE$", 1, 1, 0, 0, 0, 0, 8, 0x2c, 0, 8, 0, 0, SUBSEG_MILLI},
1039 {"$BSS$", 1, 1, 0, 0, 0, 1, 80, 0x1f, 1, 8, 1, 1, SUBSEG_BSS},
252b5132
RH		 1040 {NULL, 0, 1, 0, 0, 0, 0, 255, 0x1f, 0, 4, 0, 0, 0}
1041};
1042
1043static struct default_space_dict pa_def_spaces[] =
1044{
49863f82
JL		 1045 {"$TEXT$", 0, 1, 1, 0, 8, ASEC_NULL},
1046 {"$PRIVATE$", 1, 1, 1, 1, 16, ASEC_NULL},
1047 {NULL, 0, 0, 0, 0, 0, ASEC_NULL}
252b5132
RH		 1048};
1049
1050/* Misc local definitions used by the assembler. */
1051
252b5132
RH		 1052/* These macros are used to maintain spaces/subspaces. */
1053#define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
1054#define SPACE_USER_DEFINED(space_chain) (space_chain)->sd_user_defined
1055#define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
1056#define SPACE_NAME(space_chain) (space_chain)->sd_name
1057
1058#define SUBSPACE_DEFINED(ss_chain) (ss_chain)->ssd_defined
1059#define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
49863f82
JL		 1060#endif
1061
1062/* Return nonzero if the string pointed to by S potentially represents
1063 a right or left half of a FP register */
1064#define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
1065#define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
252b5132
RH		 1066
1067/* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
1068 main loop after insertion. */
1069
1070#define INSERT_FIELD_AND_CONTINUE(OPCODE, FIELD, START) \
1071 { \
1072 ((OPCODE) |= (FIELD) << (START)); \
1073 continue; \
1074 }
1075
1076/* Simple range checking for FIELD againt HIGH and LOW bounds.
1077 IGNORE is used to suppress the error message. */
1078
1079#define CHECK_FIELD(FIELD, HIGH, LOW, IGNORE) \
1080 { \
1081 if ((FIELD) > (HIGH) || (FIELD) < (LOW)) \
1082 { \
1083 if (! IGNORE) \
1084 as_bad (_("Field out of range [%d..%d] (%d)."), (LOW), (HIGH), \
1085 (int) (FIELD));\
1086 break; \
1087 } \
1088 }
1089
1090#define is_DP_relative(exp) \
1091 ((exp).X_op == O_subtract \
a0f75b47 1092 && strcmp (S_GET_NAME ((exp).X_op_symbol), "$global$") == 0)
252b5132
RH		 1093
1094#define is_PC_relative(exp) \
1095 ((exp).X_op == O_subtract \
a0f75b47 1096 && strcmp (S_GET_NAME ((exp).X_op_symbol), "$PIC_pcrel$0") == 0)
252b5132
RH		 1097
1098/* We need some complex handling for stabs (sym1 - sym2). Luckily, we'll
1099 always be able to reduce the expression to a constant, so we don't
1100 need real complex handling yet. */
1101#define is_complex(exp) \
1102 ((exp).X_op != O_constant && (exp).X_op != O_symbol)
1103
1104/* Actual functions to implement the PA specific code for the assembler. */
1105
1106/* Called before writing the object file. Make sure entry/exit and
1107 proc/procend pairs match. */
1108
1109void
1110pa_check_eof ()
1111{
1112 if (within_entry_exit)
1113 as_fatal (_("Missing .exit\n"));
1114
1115 if (within_procedure)
1116 as_fatal (_("Missing .procend\n"));
1117}
1118
252b5132
RH		 1119/* Returns a pointer to the label_symbol_struct for the current space.
1120 or NULL if no label_symbol_struct exists for the current space. */
1121
1122static label_symbol_struct *
1123pa_get_label ()
1124{
1125 label_symbol_struct *label_chain;
252b5132
RH		 1126
1127 for (label_chain = label_symbols_rootp;
1128 label_chain;
1129 label_chain = label_chain->lss_next)
49863f82
JL		 1130 {
1131#ifdef OBJ_SOM
1132 if (current_space == label_chain->lss_space && label_chain->lss_label)
1133 return label_chain;
1134#endif
1135#ifdef OBJ_ELF
1136 if (now_seg == label_chain->lss_segment && label_chain->lss_label)
252b5132 1137 return label_chain;
49863f82
JL		 1138#endif
1139 }
252b5132
RH		 1140
1141 return NULL;
1142}
1143
1144/* Defines a label for the current space. If one is already defined,
1145 this function will replace it with the new label. */
1146
1147void
1148pa_define_label (symbol)
1149 symbolS *symbol;
1150{
1151 label_symbol_struct *label_chain = pa_get_label ();
252b5132
RH		 1152
1153 if (label_chain)
1154 label_chain->lss_label = symbol;
1155 else
1156 {
1157 /* Create a new label entry and add it to the head of the chain. */
1158 label_chain
1159 = (label_symbol_struct *) xmalloc (sizeof (label_symbol_struct));
1160 label_chain->lss_label = symbol;
49863f82
JL		 1161#ifdef OBJ_SOM
1162 label_chain->lss_space = current_space;
1163#endif
1164#ifdef OBJ_ELF
1165 label_chain->lss_segment = now_seg;
1166#endif
252b5132
RH		 1167 label_chain->lss_next = NULL;
1168
1169 if (label_symbols_rootp)
1170 label_chain->lss_next = label_symbols_rootp;
1171
1172 label_symbols_rootp = label_chain;
1173 }
1174}
1175
1176/* Removes a label definition for the current space.
1177 If there is no label_symbol_struct entry, then no action is taken. */
1178
1179static void
1180pa_undefine_label ()
1181{
1182 label_symbol_struct *label_chain;
1183 label_symbol_struct *prev_label_chain = NULL;
252b5132
RH		 1184
1185 for (label_chain = label_symbols_rootp;
1186 label_chain;
1187 label_chain = label_chain->lss_next)
1188 {
49863f82
JL		 1189 if (1
1190#ifdef OBJ_SOM
1191 && current_space == label_chain->lss_space && label_chain->lss_label
1192#endif
1193#ifdef OBJ_ELF
1194 && now_seg == label_chain->lss_segment && label_chain->lss_label
1195#endif
1196 )
252b5132
RH		 1197 {
1198 /* Remove the label from the chain and free its memory. */
1199 if (prev_label_chain)
1200 prev_label_chain->lss_next = label_chain->lss_next;
1201 else
1202 label_symbols_rootp = label_chain->lss_next;
1203
1204 free (label_chain);
1205 break;
1206 }
1207 prev_label_chain = label_chain;
1208 }
1209}
1210
1211
1212/* An HPPA-specific version of fix_new. This is required because the HPPA
1213 code needs to keep track of some extra stuff. Each call to fix_new_hppa
1214 results in the creation of an instance of an hppa_fix_struct. An
1215 hppa_fix_struct stores the extra information along with a pointer to the
1216 original fixS. This is attached to the original fixup via the
1217 tc_fix_data field. */
1218
1219static void
1220fix_new_hppa (frag, where, size, add_symbol, offset, exp, pcrel,
1221 r_type, r_field, r_format, arg_reloc, unwind_bits)
1222 fragS *frag;
1223 int where;
1224 int size;
1225 symbolS *add_symbol;
1226 long offset;
1227 expressionS *exp;
1228 int pcrel;
1229 bfd_reloc_code_real_type r_type;
1230 enum hppa_reloc_field_selector_type_alt r_field;
1231 int r_format;
1232 long arg_reloc;
1233 int* unwind_bits;
1234{
1235 fixS *new_fix;
1236
1237 struct hppa_fix_struct *hppa_fix = (struct hppa_fix_struct *)
1238 obstack_alloc (&notes, sizeof (struct hppa_fix_struct));
1239
1240 if (exp != NULL)
1241 new_fix = fix_new_exp (frag, where, size, exp, pcrel, r_type);
1242 else
1243 new_fix = fix_new (frag, where, size, add_symbol, offset, pcrel, r_type);
1244 new_fix->tc_fix_data = (void *) hppa_fix;
1245 hppa_fix->fx_r_type = r_type;
1246 hppa_fix->fx_r_field = r_field;
1247 hppa_fix->fx_r_format = r_format;
1248 hppa_fix->fx_arg_reloc = arg_reloc;
1249 hppa_fix->segment = now_seg;
1250#ifdef OBJ_SOM
1251 if (r_type == R_ENTRY || r_type == R_EXIT)
1252 new_fix->fx_offset = *unwind_bits;
1253#endif
1254
1255 /* foo-$global$ is used to access non-automatic storage. $global$
1256 is really just a marker and has served its purpose, so eliminate
1257 it now so as not to confuse write.c. */
1258 if (new_fix->fx_subsy
1259 && !strcmp (S_GET_NAME (new_fix->fx_subsy), "$global$"))
1260 new_fix->fx_subsy = NULL;
1261}
1262
1263/* Parse a .byte, .word, .long expression for the HPPA. Called by
1264 cons via the TC_PARSE_CONS_EXPRESSION macro. */
1265
1266void
1267parse_cons_expression_hppa (exp)
1268 expressionS *exp;
1269{
1270 hppa_field_selector = pa_chk_field_selector (&input_line_pointer);
1271 expression (exp);
1272}
1273
1274/* This fix_new is called by cons via TC_CONS_FIX_NEW.
1275 hppa_field_selector is set by the parse_cons_expression_hppa. */
1276
1277void
1278cons_fix_new_hppa (frag, where, size, exp)
1279 fragS *frag;
1280 int where;
1281 int size;
1282 expressionS *exp;
1283{
1284 unsigned int rel_type;
1285
1286 /* Get a base relocation type. */
1287 if (is_DP_relative (*exp))
1288 rel_type = R_HPPA_GOTOFF;
1289 else if (is_complex (*exp))
1290 rel_type = R_HPPA_COMPLEX;
1291 else
1292 rel_type = R_HPPA;
1293
1294 if (hppa_field_selector != e_psel && hppa_field_selector != e_fsel)
1295 as_warn (_("Invalid field selector. Assuming F%%."));
1296
1297 fix_new_hppa (frag, where, size,
1298 (symbolS *) NULL, (offsetT) 0, exp, 0, rel_type,
077db52a 1299 hppa_field_selector, size * 8, 0, NULL);
252b5132
RH		 1300
1301 /* Reset field selector to its default state. */
1302 hppa_field_selector = 0;
1303}
1304
1305/* This function is called once, at assembler startup time. It should
1306 set up all the tables, etc. that the MD part of the assembler will need. */
1307
1308void
1309md_begin ()
1310{
1311 const char *retval = NULL;
1312 int lose = 0;
1313 unsigned int i = 0;
1314
1315 last_call_info = NULL;
1316 call_info_root = NULL;
1317
1318 /* Set the default machine type. */
1319 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10))
1320 as_warn (_("could not set architecture and machine"));
1321
1322 /* Folding of text and data segments fails miserably on the PA.
1323 Warn user and disable "-R" option. */
1324 if (flag_readonly_data_in_text)
1325 {
1326 as_warn (_("-R option not supported on this target."));
1327 flag_readonly_data_in_text = 0;
1328 }
1329
49863f82 1330#ifdef OBJ_SOM
252b5132 1331 pa_spaces_begin ();
49863f82 1332#endif
252b5132
RH		 1333
1334 op_hash = hash_new ();
1335
1336 while (i < NUMOPCODES)
1337 {
1338 const char *name = pa_opcodes[i].name;
1339 retval = hash_insert (op_hash, name, (struct pa_opcode *) &pa_opcodes[i]);
1340 if (retval != NULL && *retval != '\0')
1341 {
1342 as_fatal (_("Internal error: can't hash `%s': %s\n"), name, retval);
1343 lose = 1;
1344 }
1345 do
1346 {
1347 if ((pa_opcodes[i].match & pa_opcodes[i].mask)
1348 != pa_opcodes[i].match)
1349 {
1350 fprintf (stderr, _("internal error: losing opcode: `%s' \"%s\"\n"),
1351 pa_opcodes[i].name, pa_opcodes[i].args);
1352 lose = 1;
1353 }
1354 ++i;
1355 }
1356 while (i < NUMOPCODES && !strcmp (pa_opcodes[i].name, name));
1357 }
1358
1359 if (lose)
1360 as_fatal (_("Broken assembler. No assembly attempted."));
1361
49863f82 1362#ifdef OBJ_SOM
252b5132
RH		 1363 /* SOM will change text_section. To make sure we never put
1364 anything into the old one switch to the new one now. */
1365 subseg_set (text_section, 0);
49863f82 1366#endif
252b5132 1367
993142d5 1368#ifdef OBJ_SOM
252b5132
RH		 1369 dummy_symbol = symbol_find_or_make ("L$dummy");
1370 S_SET_SEGMENT (dummy_symbol, text_section);
993142d5
ILT		 1371 /* Force the symbol to be converted to a real symbol. */
1372 (void) symbol_get_bfdsym (dummy_symbol);
1373#endif
252b5132
RH		 1374}
1375
1376/* Assemble a single instruction storing it into a frag. */
1377void
1378md_assemble (str)
1379 char *str;
1380{
1381 char *to;
1382
1383 /* The had better be something to assemble. */
1384 assert (str);
1385
1386 /* If we are within a procedure definition, make sure we've
1387 defined a label for the procedure; handle case where the
1388 label was defined after the .PROC directive.
1389
1390 Note there's not need to diddle with the segment or fragment
1391 for the label symbol in this case. We have already switched
1392 into the new $CODE$ subspace at this point. */
1393 if (within_procedure && last_call_info->start_symbol == NULL)
1394 {
1395 label_symbol_struct *label_symbol = pa_get_label ();
1396
1397 if (label_symbol)
1398 {
1399 if (label_symbol->lss_label)
1400 {
1401 last_call_info->start_symbol = label_symbol->lss_label;
a0f75b47
ILT		 1402 symbol_get_bfdsym (label_symbol->lss_label)->flags
1403 |= BSF_FUNCTION;
252b5132
RH		 1404#ifdef OBJ_SOM
1405 /* Also handle allocation of a fixup to hold the unwind
1406 information when the label appears after the proc/procend. */
1407 if (within_entry_exit)
1408 {
1409 char *where = frag_more (0);
1410
1411 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
1412 NULL, (offsetT) 0, NULL,
1413 0, R_HPPA_ENTRY, e_fsel, 0, 0,
1414 (int *)&last_call_info->ci_unwind.descriptor);
1415 }
1416#endif
1417 }
1418 else
1419 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
1420 }
1421 else
1422 as_bad (_("Missing function name for .PROC"));
1423 }
1424
1425 /* Assemble the instruction. Results are saved into "the_insn". */
1426 pa_ip (str);
1427
1428 /* Get somewhere to put the assembled instrution. */
1429 to = frag_more (4);
1430
1431 /* Output the opcode. */
1432 md_number_to_chars (to, the_insn.opcode, 4);
1433
1434 /* If necessary output more stuff. */
1435 if (the_insn.reloc != R_HPPA_NONE)
1436 fix_new_hppa (frag_now, (to - frag_now->fr_literal), 4, NULL,
1437 (offsetT) 0, &the_insn.exp, the_insn.pcrel,
1438 the_insn.reloc, the_insn.field_selector,
1439 the_insn.format, the_insn.arg_reloc, NULL);
1440}
1441
1442/* Do the real work for assembling a single instruction. Store results
1443 into the global "the_insn" variable. */
1444
1445static void
1446pa_ip (str)
1447 char *str;
1448{
1449 char *error_message = "";
1450 char *s, c, *argstart, *name, *save_s;
1451 const char *args;
1452 int match = FALSE;
1453 int comma = 0;
1454 int cmpltr, nullif, flag, cond, num;
1455 unsigned long opcode;
1456 struct pa_opcode *insn;
1457
49863f82 1458#ifdef OBJ_SOM
252b5132
RH		 1459 /* We must have a valid space and subspace. */
1460 pa_check_current_space_and_subspace ();
49863f82 1461#endif
252b5132 1462
b1c5e0ee
JL		 1463 /* Convert everything up to the first whitespace character into lower
1464 case. */
1465 for (s = str; *s != ' ' && *s != '\t' && *s != '\n' && *s != '\0'; s++)
1466 if (isupper (*s))
1467 *s = tolower (*s);
1468
252b5132
RH		 1469 /* Skip to something interesting. */
1470 for (s = str; isupper (*s) || islower (*s) || (*s >= '0' && *s <= '3'); ++s)
1471 ;
1472
1473 switch (*s)
1474 {
1475
1476 case '\0':
1477 break;
1478
1479 case ',':
1480 comma = 1;
1481
1482 /*FALLTHROUGH */
1483
1484 case ' ':
1485 *s++ = '\0';
1486 break;
1487
1488 default:
1489 as_fatal (_("Unknown opcode: `%s'"), str);
1490 }
1491
1492 save_s = str;
1493
252b5132
RH		 1494 /* Look up the opcode in the has table. */
1495 if ((insn = (struct pa_opcode *) hash_find (op_hash, str)) == NULL)
1496 {
1497 as_bad ("Unknown opcode: `%s'", str);
1498 return;
1499 }
1500
1501 if (comma)
1502 {
1503 *--s = ',';
1504 }
1505
1506 /* Mark the location where arguments for the instruction start, then
1507 start processing them. */
1508 argstart = s;
1509 for (;;)
1510 {
1511 /* Do some initialization. */
1512 opcode = insn->match;
1513 memset (&the_insn, 0, sizeof (the_insn));
1514
1515 the_insn.reloc = R_HPPA_NONE;
1516
1517 /* If this instruction is specific to a particular architecture,
1518 then set a new architecture. */
1519 /* But do not automatically promote to pa2.0. The automatic promotion
1520 crud is for compatability with HP's old assemblers only. */
1521 if (insn->arch < 20
1522 && bfd_get_mach (stdoutput) < insn->arch)
1523 {
1524 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, insn->arch))
1525 as_warn (_("could not update architecture and machine"));
1526 }
1527 else if (bfd_get_mach (stdoutput) < insn->arch)
1528 {
1529 match = FALSE;
1530 goto failed;
1531 }
1532
1533 /* Build the opcode, checking as we go to make
1534 sure that the operands match. */
1535 for (args = insn->args;; ++args)
1536 {
1537 switch (*args)
1538 {
1539
1540 /* End of arguments. */
1541 case '\0':
1542 if (*s == '\0')
1543 match = TRUE;
1544 break;
1545
1546 case '+':
1547 if (*s == '+')
1548 {
1549 ++s;
1550 continue;
1551 }
1552 if (*s == '-')
1553 continue;
1554 break;
1555
1556 /* These must match exactly. */
1557 case '(':
1558 case ')':
1559 case ',':
1560 case ' ':
1561 if (*s++ == *args)
1562 continue;
1563 break;
1564
1565 /* Handle a 5 bit register or control register field at 10. */
1566 case 'b':
1567 case '^':
1568 num = pa_parse_number (&s, 0);
1569 CHECK_FIELD (num, 31, 0, 0);
1570 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
1571
1572 /* Handle a 5 bit register field at 15. */
1573 case 'x':
1574 num = pa_parse_number (&s, 0);
1575 CHECK_FIELD (num, 31, 0, 0);
1576 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1577
1578 /* Handle a 5 bit register field at 31. */
1579 case 'y':
1580 case 't':
1581 num = pa_parse_number (&s, 0);
1582 CHECK_FIELD (num, 31, 0, 0);
1583 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1584
1585 /* Handle a 5 bit field length at 31. */
1586 case 'T':
1587 num = pa_get_absolute_expression (&the_insn, &s);
1588 s = expr_end;
1589 CHECK_FIELD (num, 32, 1, 0);
1590 INSERT_FIELD_AND_CONTINUE (opcode, 32 - num, 0);
1591
1592 /* Handle a 5 bit immediate at 15. */
1593 case '5':
1594 num = pa_get_absolute_expression (&the_insn, &s);
1595 s = expr_end;
1596 CHECK_FIELD (num, 15, -16, 0);
1597 low_sign_unext (num, 5, &num);
1598 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1599
1600 /* Handle a 5 bit immediate at 31. */
1601 case 'V':
1602 num = pa_get_absolute_expression (&the_insn, &s);
1603 s = expr_end;
1604 CHECK_FIELD (num, 15, -16, 0)
1605 low_sign_unext (num, 5, &num);
1606 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1607
1608 /* Handle an unsigned 5 bit immediate at 31. */
1609 case 'r':
1610 num = pa_get_absolute_expression (&the_insn, &s);
1611 s = expr_end;
1612 CHECK_FIELD (num, 31, 0, 0);
1613 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1614
1615 /* Handle an unsigned 5 bit immediate at 15. */
1616 case 'R':
1617 num = pa_get_absolute_expression (&the_insn, &s);
1618 s = expr_end;
1619 CHECK_FIELD (num, 31, 0, 0);
1620 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1621
1622 /* Handle a 2 bit space identifier at 17. */
1623 case 's':
1624 num = pa_parse_number (&s, 0);
1625 CHECK_FIELD (num, 3, 0, 1);
1626 INSERT_FIELD_AND_CONTINUE (opcode, num, 14);
1627
1628 /* Handle a 3 bit space identifier at 18. */
1629 case 'S':
1630 num = pa_parse_number (&s, 0);
1631 CHECK_FIELD (num, 7, 0, 1);
1632 dis_assemble_3 (num, &num);
1633 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
1634
1635 /* Handle a completer for an indexing load or store. */
1636 case 'c':
1637 {
1638 int uu = 0;
1639 int m = 0;
1640 int i = 0;
1641 while (*s == ',' && i < 2)
1642 {
1643 s++;
1644 if (strncasecmp (s, "sm", 2) == 0)
1645 {
1646 uu = 1;
1647 m = 1;
1648 s++;
1649 i++;
1650 }
1651 else if (strncasecmp (s, "m", 1) == 0)
1652 m = 1;
1653 else if (strncasecmp (s, "s", 1) == 0)
1654 uu = 1;
1655 else
1656 as_bad (_("Invalid Indexed Load Completer."));
1657 s++;
1658 i++;
1659 }
1660 if (i > 2)
1661 as_bad (_("Invalid Indexed Load Completer Syntax."));
1662 opcode |= m << 5;
1663 INSERT_FIELD_AND_CONTINUE (opcode, uu, 13);
1664 }
1665
1666 /* Handle a short load/store completer. */
1667 case 'C':
1668 {
1669 int a = 0;
1670 int m = 0;
1671 if (*s == ',')
1672 {
1673 s++;
1674 if (strncasecmp (s, "ma", 2) == 0)
1675 {
1676 a = 0;
1677 m = 1;
1678 }
1679 else if (strncasecmp (s, "mb", 2) == 0)
1680 {
1681 a = 1;
1682 m = 1;
1683 }
1684 else
1685 as_bad (_("Invalid Short Load/Store Completer."));
1686 s += 2;
1687 }
1688
1689 if (*args == 'C')
1690 {
1691 opcode |= m << 5;
1692 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1693 }
1694 }
1695
1696 /* Handle a stbys completer. */
1697 case 'Y':
1698 {
1699 int a = 0;
1700 int m = 0;
1701 int i = 0;
1702 while (*s == ',' && i < 2)
1703 {
1704 s++;
1705 if (strncasecmp (s, "m", 1) == 0)
1706 m = 1;
1707 else if (strncasecmp (s, "b", 1) == 0)
1708 a = 0;
1709 else if (strncasecmp (s, "e", 1) == 0)
1710 a = 1;
1711 else
1712 as_bad (_("Invalid Store Bytes Short Completer"));
1713 s++;
1714 i++;
1715 }
1716 if (i > 2)
1717 as_bad (_("Invalid Store Bytes Short Completer"));
1718 opcode |= m << 5;
1719 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1720 }
1721
55a914bc 1722 /* Handle all conditions. */
252b5132 1723 case '?':
55a914bc
JL		 1724 {
1725 args++;
1726 switch (*args)
1727 {
1728 /* Handle FP compare conditions. */
1729 case 'f':
1730 cond = pa_parse_fp_cmp_cond (&s);
1731 INSERT_FIELD_AND_CONTINUE (opcode, cond, 0);
1732
1733 /* Handle an add condition. */
9a913dfb 1734 case 'A':
55a914bc
JL		 1735 case 'a':
1736 cmpltr = 0;
1737 flag = 0;
1738 if (*s == ',')
1739 {
1740 s++;
9a913dfb
JL		 1741
1742 /* 64 bit conditions. */
1743 if (*args == 'A')
1744 {
1745 if (*s == '*')
1746 s++;
1747 else
1748 break;
1749 }
55a914bc 1750 name = s;
9a913dfb 1751
55a914bc
JL		 1752 while (*s != ',' && *s != ' ' && *s != '\t')
1753 s += 1;
1754 c = *s;
1755 *s = 0x00;
1756 if (strcmp (name, "=") == 0)
1757 cmpltr = 1;
1758 else if (strcmp (name, "<") == 0)
1759 cmpltr = 2;
1760 else if (strcmp (name, "<=") == 0)
1761 cmpltr = 3;
1762 else if (strcasecmp (name, "nuv") == 0)
1763 cmpltr = 4;
1764 else if (strcasecmp (name, "znv") == 0)
1765 cmpltr = 5;
1766 else if (strcasecmp (name, "sv") == 0)
1767 cmpltr = 6;
1768 else if (strcasecmp (name, "od") == 0)
1769 cmpltr = 7;
1770 else if (strcasecmp (name, "tr") == 0)
1771 {
1772 cmpltr = 0;
1773 flag = 1;
1774 }
1775 else if (strcmp (name, "<>") == 0)
1776 {
1777 cmpltr = 1;
1778 flag = 1;
1779 }
1780 else if (strcmp (name, ">=") == 0)
1781 {
1782 cmpltr = 2;
1783 flag = 1;
1784 }
1785 else if (strcmp (name, ">") == 0)
1786 {
1787 cmpltr = 3;
1788 flag = 1;
1789 }
1790 else if (strcasecmp (name, "uv") == 0)
1791 {
1792 cmpltr = 4;
1793 flag = 1;
1794 }
1795 else if (strcasecmp (name, "vnz") == 0)
1796 {
1797 cmpltr = 5;
1798 flag = 1;
1799 }
1800 else if (strcasecmp (name, "nsv") == 0)
1801 {
1802 cmpltr = 6;
1803 flag = 1;
1804 }
1805 else if (strcasecmp (name, "ev") == 0)
1806 {
1807 cmpltr = 7;
1808 flag = 1;
1809 }
9a913dfb
JL		 1810 /* ",*" is a valid condition. */
1811 else if (*args == 'a')
55a914bc
JL		 1812 as_bad (_("Invalid Add Condition: %s"), name);
1813 *s = c;
1814 }
1815 opcode |= cmpltr << 13;
1816 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
252b5132 1817
55a914bc
JL		 1818 /* Handle non-negated add and branch condition. */
1819 case 'd':
1820 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
1821 if (cmpltr < 0)
1822 {
1823 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s);
1824 cmpltr = 0;
1825 }
1826 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
1827
9a913dfb
JL		 1828 /* Handle negated add and branch condition. */
1829 case 'D':
1830 abort ();
1831
1832 /* Handle wide-mode non-negated add and branch condition. */
1833 case 'w':
1834 abort ();
1835
1836 /* Handle wide-mode negated add and branch condition. */
1837 case 'W':
1838 abort();
1839
55a914bc
JL		 1840 /* Handle a negated or non-negated add and branch
1841 condition. */
1842 case '@':
1843 save_s = s;
1844 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
1845 if (cmpltr < 0)
1846 {
1847 s = save_s;
1848 cmpltr = pa_parse_neg_add_cmpltr (&s, 1);
1849 if (cmpltr < 0)
1850 {
1851 as_bad (_("Invalid Compare/Subtract Condition"));
1852 cmpltr = 0;
1853 }
1854 else
1855 {
1856 /* Negated condition requires an opcode change. */
1857 opcode |= 1 << 27;
1858 }
1859 }
1860 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
252b5132 1861
55a914bc 1862 /* Handle branch on bit conditions. */
9a913dfb 1863 case 'B':
55a914bc
JL		 1864 case 'b':
1865 cmpltr = 0;
1866 if (*s == ',')
1867 {
1868 s++;
9a913dfb
JL		 1869
1870 if (*args == 'B')
1871 {
1872 if (*s == '*')
1873 s++;
1874 else
1875 break;
1876 }
1877
55a914bc
JL		 1878 if (strncmp (s, "<", 1) == 0)
1879 {
1880 cmpltr = 0;
1881 s++;
1882 }
1883 else if (strncmp (s, ">=", 2) == 0)
1884 {
1885 cmpltr = 1;
1886 s += 2;
1887 }
1888 else
1889 as_bad (_("Invalid Bit Branch Condition: %c"), *s);
1890 }
1891 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 15);
252b5132 1892
55a914bc 1893 /* Handle a compare/subtract condition. */
9a913dfb 1894 case 'S':
55a914bc
JL		 1895 case 's':
1896 cmpltr = 0;
1897 flag = 0;
1898 if (*s == ',')
1899 {
1900 s++;
9a913dfb
JL		 1901
1902 /* 64 bit conditions. */
1903 if (*args == 'S')
1904 {
1905 if (*s == '*')
1906 s++;
1907 else
1908 break;
1909 }
55a914bc 1910 name = s;
9a913dfb 1911
55a914bc
JL		 1912 while (*s != ',' && *s != ' ' && *s != '\t')
1913 s += 1;
1914 c = *s;
1915 *s = 0x00;
1916 if (strcmp (name, "=") == 0)
1917 cmpltr = 1;
1918 else if (strcmp (name, "<") == 0)
1919 cmpltr = 2;
1920 else if (strcmp (name, "<=") == 0)
1921 cmpltr = 3;
1922 else if (strcasecmp (name, "<<") == 0)
1923 cmpltr = 4;
1924 else if (strcasecmp (name, "<<=") == 0)
1925 cmpltr = 5;
1926 else if (strcasecmp (name, "sv") == 0)
1927 cmpltr = 6;
1928 else if (strcasecmp (name, "od") == 0)
1929 cmpltr = 7;
1930 else if (strcasecmp (name, "tr") == 0)
1931 {
1932 cmpltr = 0;
1933 flag = 1;
1934 }
1935 else if (strcmp (name, "<>") == 0)
1936 {
1937 cmpltr = 1;
1938 flag = 1;
1939 }
1940 else if (strcmp (name, ">=") == 0)
1941 {
1942 cmpltr = 2;
1943 flag = 1;
1944 }
1945 else if (strcmp (name, ">") == 0)
1946 {
1947 cmpltr = 3;
1948 flag = 1;
1949 }
1950 else if (strcasecmp (name, ">>=") == 0)
1951 {
1952 cmpltr = 4;
1953 flag = 1;
1954 }
1955 else if (strcasecmp (name, ">>") == 0)
1956 {
1957 cmpltr = 5;
1958 flag = 1;
1959 }
1960 else if (strcasecmp (name, "nsv") == 0)
1961 {
1962 cmpltr = 6;
1963 flag = 1;
1964 }
1965 else if (strcasecmp (name, "ev") == 0)
1966 {
1967 cmpltr = 7;
1968 flag = 1;
1969 }
9a913dfb
JL		 1970 /* ",*" is a valid condition. */
1971 else if (*args != 'S')
55a914bc
JL		 1972 as_bad (_("Invalid Compare/Subtract Condition: %s"),
1973 name);
1974 *s = c;
1975 }
1976 opcode |= cmpltr << 13;
1977 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
252b5132 1978
55a914bc
JL		 1979 /* Handle a non-negated compare condition. */
1980 case 't':
1981 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
1982 if (cmpltr < 0)
1983 {
1984 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s);
1985 cmpltr = 0;
1986 }
1987 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
9a913dfb
JL		 1988
1989 /* Handle a negated compare condition. */
1990 case 'T':
1991 abort ();
1992
1993 /* Handle a 64 bit non-negated compare condition. */
1994 case 'r':
1995 abort ();
1996
1997 /* Handle a 64 bit negated compare condition. */
1998 case 'R':
1999 abort ();
2000
2001 /* Handle a 64 bit cmpib condition. */
2002 case 'Q':
2003 abort ();
55a914bc
JL		 2004
2005 /* Handle a negated or non-negated compare/subtract
2006 condition. */
2007 case 'n':
2008 save_s = s;
2009 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
2010 if (cmpltr < 0)
2011 {
2012 s = save_s;
2013 cmpltr = pa_parse_neg_cmpsub_cmpltr (&s, 1);
2014 if (cmpltr < 0)
2015 {
2016 as_bad (_("Invalid Compare/Subtract Condition."));
2017 cmpltr = 0;
2018 }
2019 else
2020 {
2021 /* Negated condition requires an opcode change. */
2022 opcode |= 1 << 27;
2023 }
2024 }
2025
2026 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2027
2028 /* Handle a logical instruction condition. */
9a913dfb 2029 case 'L':
55a914bc
JL		 2030 case 'l':
2031 cmpltr = 0;
2032 flag = 0;
2033 if (*s == ',')
2034 {
2035 s++;
9a913dfb
JL		 2036
2037 /* 64 bit conditions. */
2038 if (*args == 'L')
2039 {
2040 if (*s == '*')
2041 s++;
2042 else
2043 break;
2044 }
55a914bc 2045 name = s;
9a913dfb 2046
55a914bc
JL		 2047 while (*s != ',' && *s != ' ' && *s != '\t')
2048 s += 1;
2049 c = *s;
2050 *s = 0x00;
2051
2052
2053 if (strcmp (name, "=") == 0)
2054 cmpltr = 1;
2055 else if (strcmp (name, "<") == 0)
2056 cmpltr = 2;
2057 else if (strcmp (name, "<=") == 0)
2058 cmpltr = 3;
2059 else if (strcasecmp (name, "od") == 0)
2060 cmpltr = 7;
2061 else if (strcasecmp (name, "tr") == 0)
2062 {
2063 cmpltr = 0;
2064 flag = 1;
2065 }
2066 else if (strcmp (name, "<>") == 0)
2067 {
2068 cmpltr = 1;
2069 flag = 1;
2070 }
2071 else if (strcmp (name, ">=") == 0)
2072 {
2073 cmpltr = 2;
2074 flag = 1;
2075 }
2076 else if (strcmp (name, ">") == 0)
2077 {
2078 cmpltr = 3;
2079 flag = 1;
2080 }
2081 else if (strcasecmp (name, "ev") == 0)
2082 {
2083 cmpltr = 7;
2084 flag = 1;
2085 }
9a913dfb
JL		 2086 /* ",*" is a valid condition. */
2087 else if (*args != 'L')
55a914bc
JL		 2088 as_bad (_("Invalid Logical Instruction Condition."));
2089 *s = c;
2090 }
2091 opcode |= cmpltr << 13;
2092 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2093
2094 /* Handle a shift/extract/deposit condition. */
9a913dfb 2095 case 'X':
55a914bc
JL		 2096 case 'x':
2097 case 'y':
2098 cmpltr = 0;
2099 if (*s == ',')
2100 {
2101 save_s = s++;
2102
9a913dfb
JL		 2103 /* 64 bit conditions. */
2104 if (*args == 'X')
2105 {
2106 if (*s == '*')
2107 s++;
2108 else
2109 break;
2110 }
55a914bc 2111 name = s;
9a913dfb 2112
55a914bc
JL		 2113 while (*s != ',' && *s != ' ' && *s != '\t')
2114 s += 1;
2115 c = *s;
2116 *s = 0x00;
2117 if (strcmp (name, "=") == 0)
2118 cmpltr = 1;
2119 else if (strcmp (name, "<") == 0)
2120 cmpltr = 2;
2121 else if (strcasecmp (name, "od") == 0)
2122 cmpltr = 3;
2123 else if (strcasecmp (name, "tr") == 0)
2124 cmpltr = 4;
2125 else if (strcmp (name, "<>") == 0)
2126 cmpltr = 5;
2127 else if (strcmp (name, ">=") == 0)
2128 cmpltr = 6;
2129 else if (strcasecmp (name, "ev") == 0)
2130 cmpltr = 7;
2131 /* Handle movb,n. Put things back the way they were.
2132 This includes moving s back to where it started. */
2133 else if (strcasecmp (name, "n") == 0 && *args == 'y')
2134 {
2135 *s = c;
2136 s = save_s;
2137 continue;
2138 }
9a913dfb
JL		 2139 /* ",*" is a valid condition. */
2140 else if (*args != 'X')
55a914bc
JL		 2141 as_bad (_("Invalid Shift/Extract/Deposit Condition."));
2142 *s = c;
2143 }
2144 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
252b5132 2145
55a914bc 2146 /* Handle a unit instruction condition. */
9a913dfb
JL		 2147 case 'U':
2148 case 'u':
55a914bc
JL		 2149 cmpltr = 0;
2150 flag = 0;
2151 if (*s == ',')
2152 {
2153 s++;
2154
9a913dfb
JL		 2155 /* 64 bit conditions. */
2156 if (*args == 'U')
2157 {
2158 if (*s == '*')
2159 s++;
2160 else
2161 break;
2162 }
2163
55a914bc
JL		 2164 if (strncasecmp (s, "sbz", 3) == 0)
2165 {
2166 cmpltr = 2;
2167 s += 3;
2168 }
2169 else if (strncasecmp (s, "shz", 3) == 0)
2170 {
2171 cmpltr = 3;
2172 s += 3;
2173 }
2174 else if (strncasecmp (s, "sdc", 3) == 0)
2175 {
2176 cmpltr = 4;
2177 s += 3;
2178 }
2179 else if (strncasecmp (s, "sbc", 3) == 0)
2180 {
2181 cmpltr = 6;
2182 s += 3;
2183 }
2184 else if (strncasecmp (s, "shc", 3) == 0)
2185 {
2186 cmpltr = 7;
2187 s += 3;
2188 }
2189 else if (strncasecmp (s, "tr", 2) == 0)
2190 {
2191 cmpltr = 0;
2192 flag = 1;
2193 s += 2;
2194 }
2195 else if (strncasecmp (s, "nbz", 3) == 0)
2196 {
2197 cmpltr = 2;
2198 flag = 1;
2199 s += 3;
2200 }
2201 else if (strncasecmp (s, "nhz", 3) == 0)
2202 {
2203 cmpltr = 3;
2204 flag = 1;
2205 s += 3;
2206 }
2207 else if (strncasecmp (s, "ndc", 3) == 0)
2208 {
2209 cmpltr = 4;
2210 flag = 1;
2211 s += 3;
2212 }
2213 else if (strncasecmp (s, "nbc", 3) == 0)
2214 {
2215 cmpltr = 6;
2216 flag = 1;
2217 s += 3;
2218 }
2219 else if (strncasecmp (s, "nhc", 3) == 0)
2220 {
2221 cmpltr = 7;
2222 flag = 1;
2223 s += 3;
2224 }
9a913dfb
JL		 2225 /* ",*" is a valid condition. */
2226 else if (*args != 'U')
55a914bc
JL		 2227 as_bad (_("Invalid Unit Instruction Condition."));
2228 }
2229 opcode |= cmpltr << 13;
2230 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
252b5132 2231
55a914bc
JL		 2232 default:
2233 abort ();
2234 }
0741736b 2235 break;
55a914bc 2236 }
252b5132
RH		 2237
2238 /* Handle a system control completer. */
2239 case 'Z':
2240 if (*s == ',' && (*(s + 1) == 'm' || *(s + 1) == 'M'))
2241 {
2242 flag = 1;
2243 s += 2;
2244 }
2245 else
2246 flag = 0;
2247
2248 INSERT_FIELD_AND_CONTINUE (opcode, flag, 5);
2249
2250 /* Handle a nullification completer for branch instructions. */
2251 case 'n':
2252 nullif = pa_parse_nullif (&s);
2253 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 1);
2254
2255 /* Handle a nullification completer for copr and spop insns. */
2256 case 'N':
2257 nullif = pa_parse_nullif (&s);
2258 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 5);
2259
2260
2261 /* Handle a 11 bit immediate at 31. */
2262 case 'i':
2263 the_insn.field_selector = pa_chk_field_selector (&s);
2264 get_expression (s);
2265 s = expr_end;
2266 if (the_insn.exp.X_op == O_constant)
2267 {
2268 num = evaluate_absolute (&the_insn);
2269 CHECK_FIELD (num, 1023, -1024, 0);
2270 low_sign_unext (num, 11, &num);
2271 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2272 }
2273 else
2274 {
2275 if (is_DP_relative (the_insn.exp))
2276 the_insn.reloc = R_HPPA_GOTOFF;
2277 else if (is_PC_relative (the_insn.exp))
2278 the_insn.reloc = R_HPPA_PCREL_CALL;
2279 else
2280 the_insn.reloc = R_HPPA;
2281 the_insn.format = 11;
2282 continue;
2283 }
2284
2285
2286 /* Handle a 14 bit immediate at 31. */
2287 case 'j':
2288 the_insn.field_selector = pa_chk_field_selector (&s);
2289 get_expression (s);
2290 s = expr_end;
2291 if (the_insn.exp.X_op == O_constant)
2292 {
2293 num = evaluate_absolute (&the_insn);
2294 CHECK_FIELD (num, 8191, -8192, 0);
2295 low_sign_unext (num, 14, &num);
2296 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2297 }
2298 else
2299 {
2300 if (is_DP_relative (the_insn.exp))
2301 the_insn.reloc = R_HPPA_GOTOFF;
2302 else if (is_PC_relative (the_insn.exp))
2303 the_insn.reloc = R_HPPA_PCREL_CALL;
2304 else
2305 the_insn.reloc = R_HPPA;
2306 the_insn.format = 14;
2307 continue;
2308 }
2309
2310 /* Handle a 21 bit immediate at 31. */
2311 case 'k':
2312 the_insn.field_selector = pa_chk_field_selector (&s);
2313 get_expression (s);
2314 s = expr_end;
2315 if (the_insn.exp.X_op == O_constant)
2316 {
2317 num = evaluate_absolute (&the_insn);
2318 CHECK_FIELD (num >> 11, 1048575, -1048576, 0);
2319 dis_assemble_21 (num, &num);
2320 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2321 }
2322 else
2323 {
2324 if (is_DP_relative (the_insn.exp))
2325 the_insn.reloc = R_HPPA_GOTOFF;
2326 else if (is_PC_relative (the_insn.exp))
2327 the_insn.reloc = R_HPPA_PCREL_CALL;
2328 else
2329 the_insn.reloc = R_HPPA;
2330 the_insn.format = 21;
2331 continue;
2332 }
2333
2334 /* Handle a 12 bit branch displacement. */
2335 case 'w':
2336 the_insn.field_selector = pa_chk_field_selector (&s);
2337 get_expression (s);
2338 s = expr_end;
2339 the_insn.pcrel = 1;
2340 if (!strcmp (S_GET_NAME (the_insn.exp.X_add_symbol), "L$0\001"))
2341 {
2342 unsigned int w1, w, result;
2343
2344 num = evaluate_absolute (&the_insn);
2345 if (num % 4)
2346 {
2347 as_bad (_("Branch to unaligned address"));
2348 break;
2349 }
2350 CHECK_FIELD (num, 8199, -8184, 0);
2351 sign_unext ((num - 8) >> 2, 12, &result);
2352 dis_assemble_12 (result, &w1, &w);
2353 INSERT_FIELD_AND_CONTINUE (opcode, ((w1 << 2) | w), 0);
2354 }
2355 else
2356 {
2357 the_insn.reloc = R_HPPA_PCREL_CALL;
2358 the_insn.format = 12;
2359 the_insn.arg_reloc = last_call_desc.arg_reloc;
2360 memset (&last_call_desc, 0, sizeof (struct call_desc));
2361 s = expr_end;
2362 continue;
2363 }
2364
2365 /* Handle a 17 bit branch displacement. */
2366 case 'W':
2367 the_insn.field_selector = pa_chk_field_selector (&s);
2368 get_expression (s);
2369 s = expr_end;
2370 the_insn.pcrel = 1;
2371 if (!the_insn.exp.X_add_symbol
2372 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2373 "L$0\001"))
2374 {
2375 unsigned int w2, w1, w, result;
2376
2377 num = evaluate_absolute (&the_insn);
2378 if (num % 4)
2379 {
2380 as_bad (_("Branch to unaligned address"));
2381 break;
2382 }
2383 CHECK_FIELD (num, 262143, -262144, 0);
2384
2385 if (the_insn.exp.X_add_symbol)
2386 num -= 8;
2387
2388 sign_unext (num >> 2, 17, &result);
2389 dis_assemble_17 (result, &w1, &w2, &w);
2390 INSERT_FIELD_AND_CONTINUE (opcode,
2391 ((w2 << 2) | (w1 << 16) | w), 0);
2392 }
2393 else
2394 {
2395 the_insn.reloc = R_HPPA_PCREL_CALL;
2396 the_insn.format = 17;
2397 the_insn.arg_reloc = last_call_desc.arg_reloc;
2398 memset (&last_call_desc, 0, sizeof (struct call_desc));
2399 continue;
2400 }
2401
2402 /* Handle an absolute 17 bit branch target. */
2403 case 'z':
2404 the_insn.field_selector = pa_chk_field_selector (&s);
2405 get_expression (s);
2406 s = expr_end;
2407 the_insn.pcrel = 0;
2408 if (!the_insn.exp.X_add_symbol
2409 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2410 "L$0\001"))
2411 {
2412 unsigned int w2, w1, w, result;
2413
2414 num = evaluate_absolute (&the_insn);
2415 if (num % 4)
2416 {
2417 as_bad (_("Branch to unaligned address"));
2418 break;
2419 }
2420 CHECK_FIELD (num, 262143, -262144, 0);
2421
2422 if (the_insn.exp.X_add_symbol)
2423 num -= 8;
2424
2425 sign_unext (num >> 2, 17, &result);
2426 dis_assemble_17 (result, &w1, &w2, &w);
2427 INSERT_FIELD_AND_CONTINUE (opcode,
2428 ((w2 << 2) | (w1 << 16) | w), 0);
2429 }
2430 else
2431 {
2432 the_insn.reloc = R_HPPA_ABS_CALL;
2433 the_insn.format = 17;
2434 the_insn.arg_reloc = last_call_desc.arg_reloc;
2435 memset (&last_call_desc, 0, sizeof (struct call_desc));
2436 continue;
2437 }
2438
2439 /* Handle a 5 bit shift count at 26. */
2440 case 'p':
2441 num = pa_get_absolute_expression (&the_insn, &s);
2442 s = expr_end;
2443 CHECK_FIELD (num, 31, 0, 0);
2444 INSERT_FIELD_AND_CONTINUE (opcode, 31 - num, 5);
2445
2446 /* Handle a 5 bit bit position at 26. */
2447 case 'P':
2448 num = pa_get_absolute_expression (&the_insn, &s);
2449 s = expr_end;
2450 CHECK_FIELD (num, 31, 0, 0);
2451 INSERT_FIELD_AND_CONTINUE (opcode, num, 5);
2452
2453 /* Handle a 5 bit immediate at 10. */
2454 case 'Q':
2455
2456 num = pa_get_absolute_expression (&the_insn, &s);
2457 if (the_insn.exp.X_op != O_constant)
2458 break;
2459 s = expr_end;
2460 CHECK_FIELD (num, 31, 0, 0);
2461 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
2462
2463 /* Handle a 13 bit immediate at 18. */
2464 case 'A':
2465 num = pa_get_absolute_expression (&the_insn, &s);
2466 s = expr_end;
2467 CHECK_FIELD (num, 8191, 0, 0);
2468 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
2469
2470 /* Handle a 26 bit immediate at 31. */
2471 case 'D':
2472 num = pa_get_absolute_expression (&the_insn, &s);
2473 s = expr_end;
2474 CHECK_FIELD (num, 671108864, 0, 0);
2475 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2476
2477 /* Handle a 3 bit SFU identifier at 25. */
2478 case 'f':
2479 if (*s++ != ',')
2480 as_bad (_("Invalid SFU identifier"));
2481 num = pa_get_absolute_expression (&the_insn, &s);
2482 s = expr_end;
2483 CHECK_FIELD (num, 7, 0, 0);
2484 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2485
2486 /* Handle a 20 bit SOP field for spop0. */
2487 case 'O':
2488 num = pa_get_absolute_expression (&the_insn, &s);
2489 s = expr_end;
2490 CHECK_FIELD (num, 1048575, 0, 0);
2491 num = (num & 0x1f) | ((num & 0x000fffe0) << 6);
2492 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2493
2494 /* Handle a 15bit SOP field for spop1. */
2495 case 'o':
2496 num = pa_get_absolute_expression (&the_insn, &s);
2497 s = expr_end;
2498 CHECK_FIELD (num, 32767, 0, 0);
2499 INSERT_FIELD_AND_CONTINUE (opcode, num, 11);
2500
2501 /* Handle a 10bit SOP field for spop3. */
2502 case '0':
2503 num = pa_get_absolute_expression (&the_insn, &s);
2504 s = expr_end;
2505 CHECK_FIELD (num, 1023, 0, 0);
2506 num = (num & 0x1f) | ((num & 0x000003e0) << 6);
2507 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2508
2509 /* Handle a 15 bit SOP field for spop2. */
2510 case '1':
2511 num = pa_get_absolute_expression (&the_insn, &s);
2512 s = expr_end;
2513 CHECK_FIELD (num, 32767, 0, 0);
2514 num = (num & 0x1f) | ((num & 0x00007fe0) << 6);
2515 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2516
2517 /* Handle a 3-bit co-processor ID field. */
2518 case 'u':
2519 if (*s++ != ',')
2520 as_bad (_("Invalid COPR identifier"));
2521 num = pa_get_absolute_expression (&the_insn, &s);
2522 s = expr_end;
2523 CHECK_FIELD (num, 7, 0, 0);
2524 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2525
2526 /* Handle a 22bit SOP field for copr. */
2527 case '2':
2528 num = pa_get_absolute_expression (&the_insn, &s);
2529 s = expr_end;
2530 CHECK_FIELD (num, 4194303, 0, 0);
2531 num = (num & 0x1f) | ((num & 0x003fffe0) << 4);
2532 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2533
2534
2535 /* Handle a source FP operand format completer. */
2536 case 'F':
2537 flag = pa_parse_fp_format (&s);
2538 the_insn.fpof1 = flag;
2539 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
2540
2541 /* Handle a destination FP operand format completer. */
2542 case 'G':
2543 /* pa_parse_format needs the ',' prefix. */
2544 s--;
2545 flag = pa_parse_fp_format (&s);
2546 the_insn.fpof2 = flag;
2547 INSERT_FIELD_AND_CONTINUE (opcode, flag, 13);
2548
252b5132
RH		 2549 /* Handle L/R register halves like 't'. */
2550 case 'v':
2551 {
2552 struct pa_11_fp_reg_struct result;
2553
2554 pa_parse_number (&s, &result);
2555 CHECK_FIELD (result.number_part, 31, 0, 0);
2556 opcode |= result.number_part;
2557
2558 /* 0x30 opcodes are FP arithmetic operation opcodes
2559 and need to be turned into 0x38 opcodes. This
2560 is not necessary for loads/stores. */
2561 if (need_pa11_opcode (&the_insn, &result)
2562 && ((opcode & 0xfc000000) == 0x30000000))
2563 opcode |= 1 << 27;
2564
2565 INSERT_FIELD_AND_CONTINUE (opcode, result.l_r_select & 1, 6);
2566 }
2567
2568 /* Handle L/R register halves like 'b'. */
2569 case 'E':
2570 {
2571 struct pa_11_fp_reg_struct result;
2572
2573 pa_parse_number (&s, &result);
2574 CHECK_FIELD (result.number_part, 31, 0, 0);
2575 opcode |= result.number_part << 21;
2576 if (need_pa11_opcode (&the_insn, &result))
2577 {
2578 opcode |= (result.l_r_select & 1) << 7;
2579 opcode |= 1 << 27;
2580 }
2581 continue;
2582 }
2583
b53fcc20
JL		 2584 /* Float operand 1 similar to 'b' but with l/r registers. */
2585 case 'J':
2586 {
2587 struct pa_11_fp_reg_struct result;
2588
2589 pa_parse_number (&s, &result);
2590 CHECK_FIELD (result.number_part, 31, 0, 0);
2591 opcode |= result.number_part << 21;
2592 opcode |= (result.l_r_select & 1) << 7;
2593 continue;
2594 }
2595
252b5132
RH		 2596 /* Handle L/R register halves like 'b'. */
2597 case '3':
2598 {
2599 struct pa_11_fp_reg_struct result;
2600 int regnum;
2601
2602 pa_parse_number (&s, &result);
2603 CHECK_FIELD (result.number_part, 31, 0, 0);
2604 opcode |= (result.number_part & 0x1c) << 11;
2605 opcode |= (result.number_part & 0x3) << 9;
2606 opcode |= (result.l_r_select & 1) << 8;
2607 continue;
2608 }
2609
2610 /* Handle L/R register halves like 'x'. */
2611 case 'e':
2612 {
2613 struct pa_11_fp_reg_struct result;
2614
2615 pa_parse_number (&s, &result);
2616 CHECK_FIELD (result.number_part, 31, 0, 0);
2617 opcode |= (result.number_part & 0x1f) << 16;
2618 if (need_pa11_opcode (&the_insn, &result))
2619 {
2620 opcode |= (result.l_r_select & 1) << 1;
2621 }
2622 continue;
2623 }
2624
2625 /* Handle L/R register halves like 'x'. */
2626 case 'X':
2627 {
2628 struct pa_11_fp_reg_struct result;
2629
2630 pa_parse_number (&s, &result);
2631 CHECK_FIELD (result.number_part, 31, 0, 0);
2632 opcode |= (result.number_part & 0x1f) << 16;
2633 if (need_pa11_opcode (&the_insn, &result))
2634 {
2635 opcode |= (result.l_r_select & 1) << 12;
2636 opcode |= 1 << 27;
2637 }
2638 continue;
2639 }
2640
b53fcc20
JL		 2641 /* Float operand 2, like 'x' but with l/r register halves. */
2642 case 'K':
2643 {
2644 struct pa_11_fp_reg_struct result;
2645
2646 pa_parse_number (&s, &result);
2647 CHECK_FIELD (result.number_part, 31, 0, 0);
2648 opcode |= (result.number_part & 0x1f) << 16;
2649 opcode |= (result.l_r_select & 1) << 12;
2650 continue;
2651 }
2652
252b5132
RH		 2653 /* Handle a 5 bit register field at 10. */
2654 case '4':
2655 {
2656 struct pa_11_fp_reg_struct result;
2657
2658 pa_parse_number (&s, &result);
2659 CHECK_FIELD (result.number_part, 31, 0, 0);
2660 if (the_insn.fpof1 == SGL)
2661 {
2662 if (result.number_part < 16)
2663 {
2664 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2665 break;
2666 }
2667
2668 result.number_part &= 0xF;
2669 result.number_part |= (result.l_r_select & 1) << 4;
2670 }
2671 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 21);
2672 }
2673
2674 /* Handle a 5 bit register field at 15. */
2675 case '6':
2676 {
2677 struct pa_11_fp_reg_struct result;
2678
2679 pa_parse_number (&s, &result);
2680 CHECK_FIELD (result.number_part, 31, 0, 0);
2681 if (the_insn.fpof1 == SGL)
2682 {
2683 if (result.number_part < 16)
2684 {
2685 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2686 break;
2687 }
2688 result.number_part &= 0xF;
2689 result.number_part |= (result.l_r_select & 1) << 4;
2690 }
2691 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 16);
2692 }
2693
2694 /* Handle a 5 bit register field at 31. */
2695 case '7':
2696 {
2697 struct pa_11_fp_reg_struct result;
2698
2699 pa_parse_number (&s, &result);
2700 CHECK_FIELD (result.number_part, 31, 0, 0);
2701 if (the_insn.fpof1 == SGL)
2702 {
2703 if (result.number_part < 16)
2704 {
2705 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2706 break;
2707 }
2708 result.number_part &= 0xF;
2709 result.number_part |= (result.l_r_select & 1) << 4;
2710 }
2711 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 0);
2712 }
2713
2714 /* Handle a 5 bit register field at 20. */
2715 case '8':
2716 {
2717 struct pa_11_fp_reg_struct result;
2718
2719 pa_parse_number (&s, &result);
2720 CHECK_FIELD (result.number_part, 31, 0, 0);
2721 if (the_insn.fpof1 == SGL)
2722 {
2723 if (result.number_part < 16)
2724 {
2725 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2726 break;
2727 }
2728 result.number_part &= 0xF;
2729 result.number_part |= (result.l_r_select & 1) << 4;
2730 }
2731 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 11);
2732 }
2733
2734 /* Handle a 5 bit register field at 25. */
2735 case '9':
2736 {
2737 struct pa_11_fp_reg_struct result;
2738
2739 pa_parse_number (&s, &result);
2740 CHECK_FIELD (result.number_part, 31, 0, 0);
2741 if (the_insn.fpof1 == SGL)
2742 {
2743 if (result.number_part < 16)
2744 {
2745 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2746 break;
2747 }
2748 result.number_part &= 0xF;
2749 result.number_part |= (result.l_r_select & 1) << 4;
2750 }
2751 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 6);
2752 }
2753
2754 /* Handle a floating point operand format at 26.
2755 Only allows single and double precision. */
2756 case 'H':
2757 flag = pa_parse_fp_format (&s);
2758 switch (flag)
2759 {
2760 case SGL:
2761 opcode |= 0x20;
2762 case DBL:
2763 the_insn.fpof1 = flag;
2764 continue;
2765
2766 case QUAD:
2767 case ILLEGAL_FMT:
2768 default:
2769 as_bad (_("Invalid Floating Point Operand Format."));
2770 }
2771 break;
2772
2773 default:
2774 abort ();
2775 }
2776 break;
2777 }
2778
2779 failed:
2780 /* Check if the args matched. */
2781 if (match == FALSE)
2782 {
2783 if (&insn[1] - pa_opcodes < (int) NUMOPCODES
2784 && !strcmp (insn->name, insn[1].name))
2785 {
2786 ++insn;
2787 s = argstart;
2788 continue;
2789 }
2790 else
2791 {
2792 as_bad (_("Invalid operands %s"), error_message);
2793 return;
2794 }
2795 }
2796 break;
2797 }
2798
2799 the_insn.opcode = opcode;
2800}
2801
2802/* Turn a string in input_line_pointer into a floating point constant of type
2803 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2804 emitted is stored in *sizeP . An error message or NULL is returned. */
2805
2806#define MAX_LITTLENUMS 6
2807
2808char *
2809md_atof (type, litP, sizeP)
2810 char type;
2811 char *litP;
2812 int *sizeP;
2813{
2814 int prec;
2815 LITTLENUM_TYPE words[MAX_LITTLENUMS];
2816 LITTLENUM_TYPE *wordP;
2817 char *t;
2818
2819 switch (type)
2820 {
2821
2822 case 'f':
2823 case 'F':
2824 case 's':
2825 case 'S':
2826 prec = 2;
2827 break;
2828
2829 case 'd':
2830 case 'D':
2831 case 'r':
2832 case 'R':
2833 prec = 4;
2834 break;
2835
2836 case 'x':
2837 case 'X':
2838 prec = 6;
2839 break;
2840
2841 case 'p':
2842 case 'P':
2843 prec = 6;
2844 break;
2845
2846 default:
2847 *sizeP = 0;
2848 return _("Bad call to MD_ATOF()");
2849 }
2850 t = atof_ieee (input_line_pointer, type, words);
2851 if (t)
2852 input_line_pointer = t;
2853 *sizeP = prec * sizeof (LITTLENUM_TYPE);
2854 for (wordP = words; prec--;)
2855 {
2856 md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE));
2857 litP += sizeof (LITTLENUM_TYPE);
2858 }
2859 return NULL;
2860}
2861
2862/* Write out big-endian. */
2863
2864void
2865md_number_to_chars (buf, val, n)
2866 char *buf;
2867 valueT val;
2868 int n;
2869{
2870 number_to_chars_bigendian (buf, val, n);
2871}
2872
2873/* Translate internal representation of relocation info to BFD target
2874 format. */
2875
2876arelent **
2877tc_gen_reloc (section, fixp)
2878 asection *section;
2879 fixS *fixp;
2880{
2881 arelent *reloc;
2882 struct hppa_fix_struct *hppa_fixp;
2883 bfd_reloc_code_real_type code;
2884 static arelent *no_relocs = NULL;
2885 arelent **relocs;
2886 bfd_reloc_code_real_type **codes;
2887 int n_relocs;
2888 int i;
2889
2890 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
2891 if (fixp->fx_addsy == 0)
2892 return &no_relocs;
2893 assert (hppa_fixp != 0);
2894 assert (section != 0);
2895
2896 reloc = (arelent *) xmalloc (sizeof (arelent));
2897
a0f75b47
ILT		 2898 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2899 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 2900 codes = (bfd_reloc_code_real_type **) hppa_gen_reloc_type (stdoutput,
2901 fixp->fx_r_type,
2902 hppa_fixp->fx_r_format,
2903 hppa_fixp->fx_r_field,
2904 fixp->fx_subsy != NULL,
a0f75b47 2905 symbol_get_bfdsym (fixp->fx_addsy));
252b5132
RH		 2906
2907 if (codes == NULL)
2908 abort ();
2909
2910 for (n_relocs = 0; codes[n_relocs]; n_relocs++)
2911 ;
2912
2913 relocs = (arelent **) xmalloc (sizeof (arelent *) * n_relocs + 1);
2914 reloc = (arelent *) xmalloc (sizeof (arelent) * n_relocs);
2915 for (i = 0; i < n_relocs; i++)
2916 relocs[i] = &reloc[i];
2917
2918 relocs[n_relocs] = NULL;
2919
2920#ifdef OBJ_ELF
2921 switch (fixp->fx_r_type)
2922 {
2923 default:
2924 assert (n_relocs == 1);
2925
2926 code = *codes[0];
2927
a0f75b47
ILT		 2928 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2929 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 2930 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
2931 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2932 reloc->addend = 0; /* default */
2933
2934 assert (reloc->howto && code == reloc->howto->type);
2935
2936 /* Now, do any processing that is dependent on the relocation type. */
2937 switch (code)
2938 {
2939 case R_PARISC_DLTREL21L:
2940 case R_PARISC_DLTREL14R:
2941 case R_PARISC_DLTREL14F:
2942 case R_PARISC_PLABEL32:
2943 case R_PARISC_PLABEL21L:
2944 case R_PARISC_PLABEL14R:
2945 /* For plabel relocations, the addend of the
2946 relocation should be either 0 (no static link) or 2
2947 (static link required).
2948
2949 FIXME: We always assume no static link!
2950
2951 We also slam a zero addend into the DLT relative relocs;
2952 it doesn't make a lot of sense to use any addend since
2953 it gets you a different (eg unknown) DLT entry. */
2954 reloc->addend = 0;
2955 break;
2956
2957 case R_PARISC_PCREL21L:
2958 case R_PARISC_PCREL17R:
2959 case R_PARISC_PCREL17F:
2960 case R_PARISC_PCREL17C:
2961 case R_PARISC_PCREL14R:
2962 case R_PARISC_PCREL14F:
2963 /* The constant is stored in the instruction. */
2964 reloc->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
2965 break;
2966 default:
2967 reloc->addend = fixp->fx_offset;
2968 break;
2969 }
2970 break;
2971 }
2972#else /* OBJ_SOM */
2973
2974 /* Walk over reach relocation returned by the BFD backend. */
2975 for (i = 0; i < n_relocs; i++)
2976 {
2977 code = *codes[i];
2978
398e8c25
ILT		 2979 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2980 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 2981 relocs[i]->howto = bfd_reloc_type_lookup (stdoutput, code);
2982 relocs[i]->address = fixp->fx_frag->fr_address + fixp->fx_where;
2983
2984 switch (code)
2985 {
2986 case R_COMP2:
2987 /* The only time we ever use a R_COMP2 fixup is for the difference
2988 of two symbols. With that in mind we fill in all four
2989 relocs now and break out of the loop. */
2990 assert (i == 1);
993142d5 2991 relocs[0]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
252b5132
RH		 2992 relocs[0]->howto = bfd_reloc_type_lookup (stdoutput, *codes[0]);
2993 relocs[0]->address = fixp->fx_frag->fr_address + fixp->fx_where;
2994 relocs[0]->addend = 0;
993142d5
ILT		 2995 relocs[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2996 *relocs[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 2997 relocs[1]->howto = bfd_reloc_type_lookup (stdoutput, *codes[1]);
2998 relocs[1]->address = fixp->fx_frag->fr_address + fixp->fx_where;
2999 relocs[1]->addend = 0;
993142d5
ILT		 3000 relocs[2]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3001 *relocs[2]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy);
252b5132
RH		 3002 relocs[2]->howto = bfd_reloc_type_lookup (stdoutput, *codes[2]);
3003 relocs[2]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3004 relocs[2]->addend = 0;
993142d5 3005 relocs[3]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
252b5132
RH		 3006 relocs[3]->howto = bfd_reloc_type_lookup (stdoutput, *codes[3]);
3007 relocs[3]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3008 relocs[3]->addend = 0;
993142d5 3009 relocs[4]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
252b5132
RH		 3010 relocs[4]->howto = bfd_reloc_type_lookup (stdoutput, *codes[4]);
3011 relocs[4]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3012 relocs[4]->addend = 0;
3013 goto done;
3014 case R_PCREL_CALL:
3015 case R_ABS_CALL:
3016 relocs[i]->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
3017 break;
3018
3019 case R_DLT_REL:
3020 case R_DATA_PLABEL:
3021 case R_CODE_PLABEL:
3022 /* For plabel relocations, the addend of the
3023 relocation should be either 0 (no static link) or 2
3024 (static link required).
3025
3026 FIXME: We always assume no static link!
3027
3028 We also slam a zero addend into the DLT relative relocs;
3029 it doesn't make a lot of sense to use any addend since
3030 it gets you a different (eg unknown) DLT entry. */
3031 relocs[i]->addend = 0;
3032 break;
3033
3034 case R_N_MODE:
3035 case R_S_MODE:
3036 case R_D_MODE:
3037 case R_R_MODE:
3038 case R_FSEL:
3039 case R_LSEL:
3040 case R_RSEL:
3041 case R_BEGIN_BRTAB:
3042 case R_END_BRTAB:
3043 case R_BEGIN_TRY:
3044 case R_N0SEL:
3045 case R_N1SEL:
3046 /* There is no symbol or addend associated with these fixups. */
993142d5
ILT		 3047 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3048 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
252b5132
RH		 3049 relocs[i]->addend = 0;
3050 break;
3051
3052 case R_END_TRY:
3053 case R_ENTRY:
3054 case R_EXIT:
3055 /* There is no symbol associated with these fixups. */
993142d5
ILT		 3056 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3057 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
252b5132
RH		 3058 relocs[i]->addend = fixp->fx_offset;
3059 break;
3060
3061 default:
3062 relocs[i]->addend = fixp->fx_offset;
3063 }
3064 }
3065
3066 done:
3067#endif
3068
3069 return relocs;
3070}
3071
3072/* Process any machine dependent frag types. */
3073
3074void
3075md_convert_frag (abfd, sec, fragP)
3076 register bfd *abfd;
3077 register asection *sec;
3078 register fragS *fragP;
3079{
3080 unsigned int address;
3081
3082 if (fragP->fr_type == rs_machine_dependent)
3083 {
3084 switch ((int) fragP->fr_subtype)
3085 {
3086 case 0:
3087 fragP->fr_type = rs_fill;
3088 know (fragP->fr_var == 1);
3089 know (fragP->fr_next);
3090 address = fragP->fr_address + fragP->fr_fix;
3091 if (address % fragP->fr_offset)
3092 {
3093 fragP->fr_offset =
3094 fragP->fr_next->fr_address
3095 - fragP->fr_address
3096 - fragP->fr_fix;
3097 }
3098 else
3099 fragP->fr_offset = 0;
3100 break;
3101 }
3102 }
3103}
3104
3105/* Round up a section size to the appropriate boundary. */
3106
3107valueT
3108md_section_align (segment, size)
3109 asection *segment;
3110 valueT size;
3111{
3112 int align = bfd_get_section_alignment (stdoutput, segment);
3113 int align2 = (1 << align) - 1;
3114
3115 return (size + align2) & ~align2;
3116}
3117
3118/* Return the approximate size of a frag before relaxation has occurred. */
3119int
3120md_estimate_size_before_relax (fragP, segment)
3121 register fragS *fragP;
3122 asection *segment;
3123{
3124 int size;
3125
3126 size = 0;
3127
3128 while ((fragP->fr_fix + size) % fragP->fr_offset)
3129 size++;
3130
3131 return size;
3132}
3133\f
3134CONST char *md_shortopts = "";
3135struct option md_longopts[] = {
3136 {NULL, no_argument, NULL, 0}
3137};
3138size_t md_longopts_size = sizeof(md_longopts);
3139
3140int
3141md_parse_option (c, arg)
3142 int c;
3143 char *arg;
3144{
3145 return 0;
3146}
3147
3148void
3149md_show_usage (stream)
3150 FILE *stream;
3151{
3152}
3153\f
3154/* We have no need to default values of symbols. */
3155
3156symbolS *
3157md_undefined_symbol (name)
3158 char *name;
3159{
3160 return 0;
3161}
3162
3163/* Apply a fixup to an instruction. */
3164
3165int
3166md_apply_fix (fixP, valp)
3167 fixS *fixP;
3168 valueT *valp;
3169{
3170 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
3171 struct hppa_fix_struct *hppa_fixP;
3172 long new_val, result = 0;
3173 unsigned int w1, w2, w, resulti;
3174
3175 hppa_fixP = (struct hppa_fix_struct *) fixP->tc_fix_data;
3176 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3177 never be "applied" (they are just markers). Likewise for
3178 R_HPPA_BEGIN_BRTAB and R_HPPA_END_BRTAB. */
3179#ifdef OBJ_SOM
3180 if (fixP->fx_r_type == R_HPPA_ENTRY
3181 || fixP->fx_r_type == R_HPPA_EXIT
3182 || fixP->fx_r_type == R_HPPA_BEGIN_BRTAB
3183 || fixP->fx_r_type == R_HPPA_END_BRTAB
3184 || fixP->fx_r_type == R_HPPA_BEGIN_TRY)
3185 return 1;
3186
3187 /* Disgusting. We must set fx_offset ourselves -- R_HPPA_END_TRY
3188 fixups are considered not adjustable, which in turn causes
3189 adjust_reloc_syms to not set fx_offset. Ugh. */
3190 if (fixP->fx_r_type == R_HPPA_END_TRY)
3191 {
3192 fixP->fx_offset = *valp;
3193 return 1;
3194 }
3195#endif
3196
3197 /* There should have been an HPPA specific fixup associated
3198 with the GAS fixup. */
3199 if (hppa_fixP)
3200 {
3201 unsigned long buf_wd = bfd_get_32 (stdoutput, buf);
3202 unsigned char fmt = bfd_hppa_insn2fmt (buf_wd);
3203
3204 /* If there is a symbol associated with this fixup, then it's something
3205 which will need a SOM relocation (except for some PC-relative relocs).
3206 In such cases we should treat the "val" or "addend" as zero since it
3207 will be added in as needed from fx_offset in tc_gen_reloc. */
3208 if ((fixP->fx_addsy != NULL
3209 || fixP->fx_r_type == R_HPPA_NONE)
3210#ifdef OBJ_SOM
3211 && fmt != 32
3212#endif
3213 )
90700a53 3214 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
252b5132
RH		 3215#ifdef OBJ_SOM
3216 /* These field selectors imply that we do not want an addend. */
3217 else if (hppa_fixP->fx_r_field == e_psel
3218 || hppa_fixP->fx_r_field == e_rpsel
3219 || hppa_fixP->fx_r_field == e_lpsel
3220 || hppa_fixP->fx_r_field == e_tsel
3221 || hppa_fixP->fx_r_field == e_rtsel
3222 || hppa_fixP->fx_r_field == e_ltsel)
90700a53 3223 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
252b5132
RH		 3224 /* This is truely disgusting. The machine independent code blindly
3225 adds in the value of the symbol being relocated against. Damn! */
3226 else if (fmt == 32
3227 && fixP->fx_addsy != NULL
3228 && S_GET_SEGMENT (fixP->fx_addsy) != bfd_com_section_ptr)
3229 new_val = hppa_field_adjust (*valp - S_GET_VALUE (fixP->fx_addsy),
3230 0, hppa_fixP->fx_r_field);
3231#endif
3232 else
3233 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3234
3235 /* Handle pc-relative exceptions from above. */
3236#define arg_reloc_stub_needed(CALLER, CALLEE) \
3237 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
90700a53 3238 if ((fmt == 12 || fmt == 17 || fmt == 22)
252b5132
RH		 3239 && fixP->fx_addsy
3240 && fixP->fx_pcrel
49863f82 3241#ifdef OBJ_SOM
252b5132 3242 && !arg_reloc_stub_needed ((long) ((obj_symbol_type *)
a0f75b47
ILT		 3243 symbol_get_bfdsym (fixP->fx_addsy))->tc_data.ap.hppa_arg_reloc,
3244 hppa_fixP->fx_arg_reloc)
49863f82 3245#endif
90700a53 3246 && (((int)(*valp) > -262144 && (int)(*valp) < 262143) && fmt != 22)
252b5132
RH		 3247 && S_GET_SEGMENT (fixP->fx_addsy) == hppa_fixP->segment
3248 && !(fixP->fx_subsy
3249 && S_GET_SEGMENT (fixP->fx_subsy) != hppa_fixP->segment))
3250
3251 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3252#undef arg_reloc_stub_needed
3253
3254 switch (fmt)
3255 {
3256 /* Handle all opcodes with the 'j' operand type. */
3257 case 14:
3258 CHECK_FIELD (new_val, 8191, -8192, 0);
3259
3260 /* Mask off 14 bits to be changed. */
3261 bfd_put_32 (stdoutput,
3262 bfd_get_32 (stdoutput, buf) & 0xffffc000,
3263 buf);
3264 low_sign_unext (new_val, 14, &resulti);
3265 result = resulti;
3266 break;
3267
3268 /* Handle all opcodes with the 'k' operand type. */
3269 case 21:
3270 CHECK_FIELD (new_val, 2097152, 0, 0);
3271
3272 /* Mask off 21 bits to be changed. */
3273 bfd_put_32 (stdoutput,
3274 bfd_get_32 (stdoutput, buf) & 0xffe00000,
3275 buf);
3276 dis_assemble_21 (new_val, &resulti);
3277 result = resulti;
3278 break;
3279
3280 /* Handle all the opcodes with the 'i' operand type. */
3281 case 11:
3282 CHECK_FIELD (new_val, 1023, -1023, 0);
3283
3284 /* Mask off 11 bits to be changed. */
3285 bfd_put_32 (stdoutput,
3286 bfd_get_32 (stdoutput, buf) & 0xffff800,
3287 buf);
3288 low_sign_unext (new_val, 11, &resulti);
3289 result = resulti;
3290 break;
3291
3292 /* Handle all the opcodes with the 'w' operand type. */
3293 case 12:
3294 CHECK_FIELD (new_val, 8199, -8184, 0);
3295
3296 /* Mask off 11 bits to be changed. */
3297 sign_unext ((new_val - 8) >> 2, 12, &resulti);
3298 bfd_put_32 (stdoutput,
3299 bfd_get_32 (stdoutput, buf) & 0xffffe002,
3300 buf);
3301
3302 dis_assemble_12 (resulti, &w1, &w);
3303 result = ((w1 << 2) | w);
3304 break;
3305
3306 /* Handle some of the opcodes with the 'W' operand type. */
3307 case 17:
3308 {
3309 int distance = *valp;
3310
3311 CHECK_FIELD (new_val, 262143, -262144, 0);
3312
3313 /* If this is an absolute branch (ie no link) with an out of
3314 range target, then we want to complain. */
3315 if (fixP->fx_r_type == R_HPPA_PCREL_CALL
3316 && (distance > 262143 || distance < -262144)
3317 && (bfd_get_32 (stdoutput, buf) & 0xffe00000) == 0xe8000000)
3318 CHECK_FIELD (distance, 262143, -262144, 0);
3319
3320 /* Mask off 17 bits to be changed. */
3321 bfd_put_32 (stdoutput,
3322 bfd_get_32 (stdoutput, buf) & 0xffe0e002,
3323 buf);
3324 sign_unext ((new_val - 8) >> 2, 17, &resulti);
3325 dis_assemble_17 (resulti, &w1, &w2, &w);
3326 result = ((w2 << 2) | (w1 << 16) | w);
3327 break;
3328 }
3329
3330 case 32:
3331 result = 0;
3332 bfd_put_32 (stdoutput, new_val, buf);
3333 break;
3334
3335 default:
3336 as_bad (_("Unknown relocation encountered in md_apply_fix."));
3337 return 0;
3338 }
3339
3340 /* Insert the relocation. */
3341 bfd_put_32 (stdoutput, bfd_get_32 (stdoutput, buf) | result, buf);
3342 return 1;
3343 }
3344 else
3345 {
3346 printf (_("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n"),
3347 (unsigned int) fixP, fixP->fx_r_type);
3348 return 0;
3349 }
3350}
3351
3352/* Exactly what point is a PC-relative offset relative TO?
3353 On the PA, they're relative to the address of the offset. */
3354
3355long
3356md_pcrel_from (fixP)
3357 fixS *fixP;
3358{
3359 return fixP->fx_where + fixP->fx_frag->fr_address;
3360}
3361
3362/* Return nonzero if the input line pointer is at the end of
3363 a statement. */
3364
3365static int
3366is_end_of_statement ()
3367{
3368 return ((*input_line_pointer == '\n')
3369 || (*input_line_pointer == ';')
3370 || (*input_line_pointer == '!'));
3371}
3372
3373/* Read a number from S. The number might come in one of many forms,
3374 the most common will be a hex or decimal constant, but it could be
3375 a pre-defined register (Yuk!), or an absolute symbol.
3376
3377 Return a number or -1 for failure.
3378
3379 When parsing PA-89 FP register numbers RESULT will be
3380 the address of a structure to return information about
3381 L/R half of FP registers, store results there as appropriate.
3382
3383 pa_parse_number can not handle negative constants and will fail
3384 horribly if it is passed such a constant. */
3385
3386static int
3387pa_parse_number (s, result)
3388 char **s;
3389 struct pa_11_fp_reg_struct *result;
3390{
3391 int num;
3392 char *name;
3393 char c;
3394 symbolS *sym;
3395 int status;
3396 char *p = *s;
3397
3398 /* Skip whitespace before the number. */
3399 while (*p == ' ' || *p == '\t')
3400 p = p + 1;
3401
3402 /* Store info in RESULT if requested by caller. */
3403 if (result)
3404 {
3405 result->number_part = -1;
3406 result->l_r_select = -1;
3407 }
3408 num = -1;
3409
3410 if (isdigit (*p))
3411 {
3412 /* Looks like a number. */
3413 num = 0;
3414
3415 if (*p == '0' && (*(p + 1) == 'x' || *(p + 1) == 'X'))
3416 {
3417 /* The number is specified in hex. */
3418 p += 2;
3419 while (isdigit (*p) || ((*p >= 'a') && (*p <= 'f'))
3420 || ((*p >= 'A') && (*p <= 'F')))
3421 {
3422 if (isdigit (*p))
3423 num = num * 16 + *p - '0';
3424 else if (*p >= 'a' && *p <= 'f')
3425 num = num * 16 + *p - 'a' + 10;
3426 else
3427 num = num * 16 + *p - 'A' + 10;
3428 ++p;
3429 }
3430 }
3431 else
3432 {
3433 /* The number is specified in decimal. */
3434 while (isdigit (*p))
3435 {
3436 num = num * 10 + *p - '0';
3437 ++p;
3438 }
3439 }
3440
3441 /* Store info in RESULT if requested by the caller. */
3442 if (result)
3443 {
3444 result->number_part = num;
3445
3446 if (IS_R_SELECT (p))
3447 {
3448 result->l_r_select = 1;
3449 ++p;
3450 }
3451 else if (IS_L_SELECT (p))
3452 {
3453 result->l_r_select = 0;
3454 ++p;
3455 }
3456 else
3457 result->l_r_select = 0;
3458 }
3459 }
3460 else if (*p == '%')
3461 {
3462 /* The number might be a predefined register. */
3463 num = 0;
3464 name = p;
3465 p++;
3466 c = *p;
3467 /* Tege hack: Special case for general registers as the general
3468 code makes a binary search with case translation, and is VERY
3469 slow. */
3470 if (c == 'r')
3471 {
3472 p++;
3473 if (*p == 'e' && *(p + 1) == 't'
3474 && (*(p + 2) == '0' || *(p + 2) == '1'))
3475 {
3476 p += 2;
3477 num = *p - '0' + 28;
3478 p++;
3479 }
3480 else if (*p == 'p')
3481 {
3482 num = 2;
3483 p++;
3484 }
3485 else if (!isdigit (*p))
3486 {
3487 if (print_errors)
3488 as_bad (_("Undefined register: '%s'."), name);
3489 num = -1;
3490 }
3491 else
3492 {
3493 do
3494 num = num * 10 + *p++ - '0';
3495 while (isdigit (*p));
3496 }
3497 }
3498 else
3499 {
3500 /* Do a normal register search. */
3501 while (is_part_of_name (c))
3502 {
3503 p = p + 1;
3504 c = *p;
3505 }
3506 *p = 0;
3507 status = reg_name_search (name);
3508 if (status >= 0)
3509 num = status;
3510 else
3511 {
3512 if (print_errors)
3513 as_bad (_("Undefined register: '%s'."), name);
3514 num = -1;
3515 }
3516 *p = c;
3517 }
3518
3519 /* Store info in RESULT if requested by caller. */
3520 if (result)
3521 {
3522 result->number_part = num;
3523 if (IS_R_SELECT (p - 1))
3524 result->l_r_select = 1;
3525 else if (IS_L_SELECT (p - 1))
3526 result->l_r_select = 0;
3527 else
3528 result->l_r_select = 0;
3529 }
3530 }
3531 else
3532 {
3533 /* And finally, it could be a symbol in the absolute section which
3534 is effectively a constant. */
3535 num = 0;
3536 name = p;
3537 c = *p;
3538 while (is_part_of_name (c))
3539 {
3540 p = p + 1;
3541 c = *p;
3542 }
3543 *p = 0;
3544 if ((sym = symbol_find (name)) != NULL)
3545 {
3546 if (S_GET_SEGMENT (sym) == &bfd_abs_section)
3547 num = S_GET_VALUE (sym);
3548 else
3549 {
3550 if (print_errors)
3551 as_bad (_("Non-absolute symbol: '%s'."), name);
3552 num = -1;
3553 }
3554 }
3555 else
3556 {
3557 /* There is where we'd come for an undefined symbol
3558 or for an empty string. For an empty string we
3559 will return zero. That's a concession made for
3560 compatability with the braindamaged HP assemblers. */
3561 if (*name == 0)
3562 num = 0;
3563 else
3564 {
3565 if (print_errors)
3566 as_bad (_("Undefined absolute constant: '%s'."), name);
3567 num = -1;
3568 }
3569 }
3570 *p = c;
3571
3572 /* Store info in RESULT if requested by caller. */
3573 if (result)
3574 {
3575 result->number_part = num;
3576 if (IS_R_SELECT (p - 1))
3577 result->l_r_select = 1;
3578 else if (IS_L_SELECT (p - 1))
3579 result->l_r_select = 0;
3580 else
3581 result->l_r_select = 0;
3582 }
3583 }
3584
3585 *s = p;
3586 return num;
3587}
3588
3589#define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3590
3591/* Given NAME, find the register number associated with that name, return
3592 the integer value associated with the given name or -1 on failure. */
3593
3594static int
3595reg_name_search (name)
3596 char *name;
3597{
3598 int middle, low, high;
3599 int cmp;
3600
3601 low = 0;
3602 high = REG_NAME_CNT - 1;
3603
3604 do
3605 {
3606 middle = (low + high) / 2;
3607 cmp = strcasecmp (name, pre_defined_registers[middle].name);
3608 if (cmp < 0)
3609 high = middle - 1;
3610 else if (cmp > 0)
3611 low = middle + 1;
3612 else
3613 return pre_defined_registers[middle].value;
3614 }
3615 while (low <= high);
3616
3617 return -1;
3618}
3619
3620
3621/* Return nonzero if the given INSN and L/R information will require
3622 a new PA-1.1 opcode. */
3623
3624static int
3625need_pa11_opcode (insn, result)
3626 struct pa_it *insn;
3627 struct pa_11_fp_reg_struct *result;
3628{
3629 if (result->l_r_select == 1 && !(insn->fpof1 == DBL && insn->fpof2 == DBL))
3630 {
3631 /* If this instruction is specific to a particular architecture,
3632 then set a new architecture. */
3633 if (bfd_get_mach (stdoutput) < pa11)
3634 {
3635 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, pa11))
3636 as_warn (_("could not update architecture and machine"));
3637 }
3638 return TRUE;
3639 }
3640 else
3641 return FALSE;
3642}
3643
3644/* Parse a condition for a fcmp instruction. Return the numerical
3645 code associated with the condition. */
3646
3647static int
3648pa_parse_fp_cmp_cond (s)
3649 char **s;
3650{
3651 int cond, i;
3652
3653 cond = 0;
3654
3655 for (i = 0; i < 32; i++)
3656 {
3657 if (strncasecmp (*s, fp_cond_map[i].string,
3658 strlen (fp_cond_map[i].string)) == 0)
3659 {
3660 cond = fp_cond_map[i].cond;
3661 *s += strlen (fp_cond_map[i].string);
3662 /* If not a complete match, back up the input string and
3663 report an error. */
3664 if (**s != ' ' && **s != '\t')
3665 {
3666 *s -= strlen (fp_cond_map[i].string);
3667 break;
3668 }
3669 while (**s == ' ' || **s == '\t')
3670 *s = *s + 1;
3671 return cond;
3672 }
3673 }
3674
3675 as_bad (_("Invalid FP Compare Condition: %s"), *s);
3676
3677 /* Advance over the bogus completer. */
3678 while (**s != ',' && **s != ' ' && **s != '\t')
3679 *s += 1;
3680
3681 return 0;
3682}
3683
3684
3685/* Parse an FP operand format completer returning the completer
3686 type. */
3687
3688static fp_operand_format
3689pa_parse_fp_format (s)
3690 char **s;
3691{
3692 int format;
3693
3694 format = SGL;
3695 if (**s == ',')
3696 {
3697 *s += 1;
3698 if (strncasecmp (*s, "sgl", 3) == 0)
3699 {
3700 format = SGL;
3701 *s += 4;
3702 }
3703 else if (strncasecmp (*s, "dbl", 3) == 0)
3704 {
3705 format = DBL;
3706 *s += 4;
3707 }
3708 else if (strncasecmp (*s, "quad", 4) == 0)
3709 {
3710 format = QUAD;
3711 *s += 5;
3712 }
3713 else
3714 {
3715 format = ILLEGAL_FMT;
3716 as_bad (_("Invalid FP Operand Format: %3s"), *s);
3717 }
3718 }
3719
3720 return format;
3721}
3722
3723/* Convert from a selector string into a selector type. */
3724
3725static int
3726pa_chk_field_selector (str)
3727 char **str;
3728{
3729 int middle, low, high;
3730 int cmp;
3731 char name[4];
3732
3733 /* Read past any whitespace. */
3734 /* FIXME: should we read past newlines and formfeeds??? */
3735 while (**str == ' ' || **str == '\t' || **str == '\n' || **str == '\f')
3736 *str = *str + 1;
3737
3738 if ((*str)[1] == '\'' || (*str)[1] == '%')
3739 name[0] = tolower ((*str)[0]),
3740 name[1] = 0;
3741 else if ((*str)[2] == '\'' || (*str)[2] == '%')
3742 name[0] = tolower ((*str)[0]),
3743 name[1] = tolower ((*str)[1]),
3744 name[2] = 0;
252b5132
RH		 3745 else if ((*str)[3] == '\'' || (*str)[3] == '%')
3746 name[0] = tolower ((*str)[0]),
3747 name[1] = tolower ((*str)[1]),
3748 name[2] = tolower ((*str)[2]),
3749 name[3] = 0;
252b5132
RH		 3750 else
3751 return e_fsel;
3752
3753 low = 0;
3754 high = sizeof (selector_table) / sizeof (struct selector_entry) - 1;
3755
3756 do
3757 {
3758 middle = (low + high) / 2;
3759 cmp = strcmp (name, selector_table[middle].prefix);
3760 if (cmp < 0)
3761 high = middle - 1;
3762 else if (cmp > 0)
3763 low = middle + 1;
3764 else
3765 {
3766 *str += strlen (name) + 1;
3767#ifndef OBJ_SOM
3768 if (selector_table[middle].field_selector == e_nsel)
3769 return e_fsel;
3770#endif
3771 return selector_table[middle].field_selector;
3772 }
3773 }
3774 while (low <= high);
3775
3776 return e_fsel;
3777}
3778
3779/* Mark (via expr_end) the end of an expression (I think). FIXME. */
3780
3781static int
3782get_expression (str)
3783 char *str;
3784{
3785 char *save_in;
3786 asection *seg;
3787
3788 save_in = input_line_pointer;
3789 input_line_pointer = str;
3790 seg = expression (&the_insn.exp);
3791 if (!(seg == absolute_section
3792 || seg == undefined_section
3793 || SEG_NORMAL (seg)))
3794 {
3795 as_warn (_("Bad segment in expression."));
3796 expr_end = input_line_pointer;
3797 input_line_pointer = save_in;
3798 return 1;
3799 }
3800 expr_end = input_line_pointer;
3801 input_line_pointer = save_in;
3802 return 0;
3803}
3804
3805/* Mark (via expr_end) the end of an absolute expression. FIXME. */
3806static int
3807pa_get_absolute_expression (insn, strp)
3808 struct pa_it *insn;
3809 char **strp;
3810{
3811 char *save_in;
3812
3813 insn->field_selector = pa_chk_field_selector (strp);
3814 save_in = input_line_pointer;
3815 input_line_pointer = *strp;
3816 expression (&insn->exp);
3817 /* This is not perfect, but is a huge improvement over doing nothing.
3818
3819 The PA assembly syntax is ambigious in a variety of ways. Consider
3820 this string "4 %r5" Is that the number 4 followed by the register
3821 r5, or is that 4 MOD 5?
3822
3823 If we get a modulo expresion When looking for an absolute, we try
3824 again cutting off the input string at the first whitespace character. */
3825 if (insn->exp.X_op == O_modulus)
3826 {
3827 char *s, c;
3828 int retval;
3829
3830 input_line_pointer = *strp;
3831 s = *strp;
3832 while (*s != ',' && *s != ' ' && *s != '\t')
3833 s++;
3834
3835 c = *s;
3836 *s = 0;
3837
3838 retval = pa_get_absolute_expression (insn, strp);
3839
3840 input_line_pointer = save_in;
3841 *s = c;
3842 return evaluate_absolute (insn);
3843 }
3844 if (insn->exp.X_op != O_constant)
3845 {
3846 as_bad (_("Bad segment (should be absolute)."));
3847 expr_end = input_line_pointer;
3848 input_line_pointer = save_in;
3849 return 0;
3850 }
3851 expr_end = input_line_pointer;
3852 input_line_pointer = save_in;
3853 return evaluate_absolute (insn);
3854}
3855
3856/* Evaluate an absolute expression EXP which may be modified by
3857 the selector FIELD_SELECTOR. Return the value of the expression. */
3858static int
3859evaluate_absolute (insn)
3860 struct pa_it *insn;
3861{
3862 int value;
3863 expressionS exp;
3864 int field_selector = insn->field_selector;
3865
3866 exp = insn->exp;
3867 value = exp.X_add_number;
3868
3869 switch (field_selector)
3870 {
3871 /* No change. */
3872 case e_fsel:
3873 break;
3874
3875 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3876 case e_lssel:
3877 if (value & 0x00000400)
3878 value += 0x800;
3879 value = (value & 0xfffff800) >> 11;
3880 break;
3881
3882 /* Sign extend from bit 21. */
3883 case e_rssel:
3884 if (value & 0x00000400)
3885 value |= 0xfffff800;
3886 else
3887 value &= 0x7ff;
3888 break;
3889
3890 /* Arithmetic shift right 11 bits. */
3891 case e_lsel:
3892 value = (value & 0xfffff800) >> 11;
3893 break;
3894
3895 /* Set bits 0-20 to zero. */
3896 case e_rsel:
3897 value = value & 0x7ff;
3898 break;
3899
3900 /* Add 0x800 and arithmetic shift right 11 bits. */
3901 case e_ldsel:
3902 value += 0x800;
3903 value = (value & 0xfffff800) >> 11;
3904 break;
3905
3906 /* Set bitgs 0-21 to one. */
3907 case e_rdsel:
3908 value |= 0xfffff800;
3909 break;
3910
3911#define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3912 case e_rrsel:
3913 value = (RSEL_ROUND (value) & 0x7ff) + (value - RSEL_ROUND (value));
3914 break;
3915
3916 case e_lrsel:
3917 value = (RSEL_ROUND (value) >> 11) & 0x1fffff;
3918 break;
3919#undef RSEL_ROUND
3920
3921 default:
3922 BAD_CASE (field_selector);
3923 break;
3924 }
3925 return value;
3926}
3927
3928/* Given an argument location specification return the associated
3929 argument location number. */
3930
3931static unsigned int
3932pa_build_arg_reloc (type_name)
3933 char *type_name;
3934{
3935
3936 if (strncasecmp (type_name, "no", 2) == 0)
3937 return 0;
3938 if (strncasecmp (type_name, "gr", 2) == 0)
3939 return 1;
3940 else if (strncasecmp (type_name, "fr", 2) == 0)
3941 return 2;
3942 else if (strncasecmp (type_name, "fu", 2) == 0)
3943 return 3;
3944 else
3945 as_bad (_("Invalid argument location: %s\n"), type_name);
3946
3947 return 0;
3948}
3949
3950/* Encode and return an argument relocation specification for
3951 the given register in the location specified by arg_reloc. */
3952
3953static unsigned int
3954pa_align_arg_reloc (reg, arg_reloc)
3955 unsigned int reg;
3956 unsigned int arg_reloc;
3957{
3958 unsigned int new_reloc;
3959
3960 new_reloc = arg_reloc;
3961 switch (reg)
3962 {
3963 case 0:
3964 new_reloc <<= 8;
3965 break;
3966 case 1:
3967 new_reloc <<= 6;
3968 break;
3969 case 2:
3970 new_reloc <<= 4;
3971 break;
3972 case 3:
3973 new_reloc <<= 2;
3974 break;
3975 default:
3976 as_bad (_("Invalid argument description: %d"), reg);
3977 }
3978
3979 return new_reloc;
3980}
3981
3982/* Parse a PA nullification completer (,n). Return nonzero if the
3983 completer was found; return zero if no completer was found. */
3984
3985static int
3986pa_parse_nullif (s)
3987 char **s;
3988{
3989 int nullif;
3990
3991 nullif = 0;
3992 if (**s == ',')
3993 {
3994 *s = *s + 1;
3995 if (strncasecmp (*s, "n", 1) == 0)
3996 nullif = 1;
3997 else
3998 {
3999 as_bad (_("Invalid Nullification: (%c)"), **s);
4000 nullif = 0;
4001 }
4002 *s = *s + 1;
4003 }
4004
4005 return nullif;
4006}
4007
4008/* Parse a non-negated compare/subtract completer returning the
4009 number (for encoding in instrutions) of the given completer.
4010
4011 ISBRANCH specifies whether or not this is parsing a condition
4012 completer for a branch (vs a nullification completer for a
4013 computational instruction. */
4014
4015static int
4016pa_parse_nonneg_cmpsub_cmpltr (s, isbranch)
4017 char **s;
4018 int isbranch;
4019{
4020 int cmpltr;
4021 char *name = *s + 1;
4022 char c;
4023 char *save_s = *s;
4024 int nullify = 0;
4025
4026 cmpltr = 0;
4027 if (**s == ',')
4028 {
4029 *s += 1;
4030 while (**s != ',' && **s != ' ' && **s != '\t')
4031 *s += 1;
4032 c = **s;
4033 **s = 0x00;
4034
4035
4036 if (strcmp (name, "=") == 0)
4037 {
4038 cmpltr = 1;
4039 }
4040 else if (strcmp (name, "<") == 0)
4041 {
4042 cmpltr = 2;
4043 }
4044 else if (strcmp (name, "<=") == 0)
4045 {
4046 cmpltr = 3;
4047 }
4048 else if (strcmp (name, "<<") == 0)
4049 {
4050 cmpltr = 4;
4051 }
4052 else if (strcmp (name, "<<=") == 0)
4053 {
4054 cmpltr = 5;
4055 }
4056 else if (strcasecmp (name, "sv") == 0)
4057 {
4058 cmpltr = 6;
4059 }
4060 else if (strcasecmp (name, "od") == 0)
4061 {
4062 cmpltr = 7;
4063 }
4064 /* If we have something like addb,n then there is no condition
4065 completer. */
4066 else if (strcasecmp (name, "n") == 0 && isbranch)
4067 {
4068 cmpltr = 0;
4069 nullify = 1;
4070 }
4071 else
4072 {
4073 cmpltr = -1;
4074 }
4075 **s = c;
4076 }
4077
4078 /* Reset pointers if this was really a ,n for a branch instruction. */
4079 if (nullify)
4080 *s = save_s;
4081
4082
4083 return cmpltr;
4084}
4085
4086/* Parse a negated compare/subtract completer returning the
4087 number (for encoding in instrutions) of the given completer.
4088
4089 ISBRANCH specifies whether or not this is parsing a condition
4090 completer for a branch (vs a nullification completer for a
4091 computational instruction. */
4092
4093static int
4094pa_parse_neg_cmpsub_cmpltr (s, isbranch)
4095 char **s;
4096 int isbranch;
4097{
4098 int cmpltr;
4099 char *name = *s + 1;
4100 char c;
4101 char *save_s = *s;
4102 int nullify = 0;
4103
4104 cmpltr = 0;
4105 if (**s == ',')
4106 {
4107 *s += 1;
4108 while (**s != ',' && **s != ' ' && **s != '\t')
4109 *s += 1;
4110 c = **s;
4111 **s = 0x00;
4112
4113
4114 if (strcasecmp (name, "tr") == 0)
4115 {
4116 cmpltr = 0;
4117 }
4118 else if (strcmp (name, "<>") == 0)
4119 {
4120 cmpltr = 1;
4121 }
4122 else if (strcmp (name, ">=") == 0)
4123 {
4124 cmpltr = 2;
4125 }
4126 else if (strcmp (name, ">") == 0)
4127 {
4128 cmpltr = 3;
4129 }
4130 else if (strcmp (name, ">>=") == 0)
4131 {
4132 cmpltr = 4;
4133 }
4134 else if (strcmp (name, ">>") == 0)
4135 {
4136 cmpltr = 5;
4137 }
4138 else if (strcasecmp (name, "nsv") == 0)
4139 {
4140 cmpltr = 6;
4141 }
4142 else if (strcasecmp (name, "ev") == 0)
4143 {
4144 cmpltr = 7;
4145 }
4146 /* If we have something like addb,n then there is no condition
4147 completer. */
4148 else if (strcasecmp (name, "n") == 0 && isbranch)
4149 {
4150 cmpltr = 0;
4151 nullify = 1;
4152 }
4153 else
4154 {
4155 cmpltr = -1;
4156 }
4157 **s = c;
4158 }
4159
4160 /* Reset pointers if this was really a ,n for a branch instruction. */
4161 if (nullify)
4162 *s = save_s;
4163
4164
4165 return cmpltr;
4166}
4167
4168
4169/* Parse a non-negated addition completer returning the number
4170 (for encoding in instrutions) of the given completer.
4171
4172 ISBRANCH specifies whether or not this is parsing a condition
4173 completer for a branch (vs a nullification completer for a
4174 computational instruction. */
4175
4176static int
4177pa_parse_nonneg_add_cmpltr (s, isbranch)
4178 char **s;
4179 int isbranch;
4180{
4181 int cmpltr;
4182 char *name = *s + 1;
4183 char c;
4184 char *save_s = *s;
4185
4186 cmpltr = 0;
4187 if (**s == ',')
4188 {
4189 *s += 1;
4190 while (**s != ',' && **s != ' ' && **s != '\t')
4191 *s += 1;
4192 c = **s;
4193 **s = 0x00;
4194 if (strcmp (name, "=") == 0)
4195 {
4196 cmpltr = 1;
4197 }
4198 else if (strcmp (name, "<") == 0)
4199 {
4200 cmpltr = 2;
4201 }
4202 else if (strcmp (name, "<=") == 0)
4203 {
4204 cmpltr = 3;
4205 }
4206 else if (strcasecmp (name, "nuv") == 0)
4207 {
4208 cmpltr = 4;
4209 }
4210 else if (strcasecmp (name, "znv") == 0)
4211 {
4212 cmpltr = 5;
4213 }
4214 else if (strcasecmp (name, "sv") == 0)
4215 {
4216 cmpltr = 6;
4217 }
4218 else if (strcasecmp (name, "od") == 0)
4219 {
4220 cmpltr = 7;
4221 }
4222 /* If we have something like addb,n then there is no condition
4223 completer. */
4224 else if (strcasecmp (name, "n") == 0 && isbranch)
4225 {
4226 cmpltr = 0;
4227 }
4228 else
4229 {
4230 cmpltr = -1;
4231 }
4232 **s = c;
4233 }
4234
4235 /* Reset pointers if this was really a ,n for a branch instruction. */
4236 if (cmpltr == 0 && *name == 'n' && isbranch)
4237 *s = save_s;
4238
4239 return cmpltr;
4240}
4241
4242/* Parse a negated addition completer returning the number
4243 (for encoding in instrutions) of the given completer.
4244
4245 ISBRANCH specifies whether or not this is parsing a condition
4246 completer for a branch (vs a nullification completer for a
4247 computational instruction). */
4248
4249static int
4250pa_parse_neg_add_cmpltr (s, isbranch)
4251 char **s;
4252 int isbranch;
4253{
4254 int cmpltr;
4255 char *name = *s + 1;
4256 char c;
4257 char *save_s = *s;
4258
4259 cmpltr = 0;
4260 if (**s == ',')
4261 {
4262 *s += 1;
4263 while (**s != ',' && **s != ' ' && **s != '\t')
4264 *s += 1;
4265 c = **s;
4266 **s = 0x00;
4267 if (strcasecmp (name, "tr") == 0)
4268 {
4269 cmpltr = 0;
4270 }
4271 else if (strcmp (name, "<>") == 0)
4272 {
4273 cmpltr = 1;
4274 }
4275 else if (strcmp (name, ">=") == 0)
4276 {
4277 cmpltr = 2;
4278 }
4279 else if (strcmp (name, ">") == 0)
4280 {
4281 cmpltr = 3;
4282 }
4283 else if (strcasecmp (name, "uv") == 0)
4284 {
4285 cmpltr = 4;
4286 }
4287 else if (strcasecmp (name, "vnz") == 0)
4288 {
4289 cmpltr = 5;
4290 }
4291 else if (strcasecmp (name, "nsv") == 0)
4292 {
4293 cmpltr = 6;
4294 }
4295 else if (strcasecmp (name, "ev") == 0)
4296 {
4297 cmpltr = 7;
4298 }
4299 /* If we have something like addb,n then there is no condition
4300 completer. */
4301 else if (strcasecmp (name, "n") == 0 && isbranch)
4302 {
4303 cmpltr = 0;
4304 }
4305 else
4306 {
4307 cmpltr = -1;
4308 }
4309 **s = c;
4310 }
4311
4312 /* Reset pointers if this was really a ,n for a branch instruction. */
4313 if (cmpltr == 0 && *name == 'n' && isbranch)
4314 *s = save_s;
4315
4316 return cmpltr;
4317}
4318
49863f82 4319#ifdef OBJ_SOM
252b5132
RH		 4320/* Handle an alignment directive. Special so that we can update the
4321 alignment of the subspace if necessary. */
4322static void
4323pa_align (bytes)
4324{
4325 /* We must have a valid space and subspace. */
4326 pa_check_current_space_and_subspace ();
4327
4328 /* Let the generic gas code do most of the work. */
4329 s_align_bytes (bytes);
4330
4331 /* If bytes is a power of 2, then update the current subspace's
4332 alignment if necessary. */
4333 if (log2 (bytes) != -1)
4334 record_alignment (current_subspace->ssd_seg, log2 (bytes));
4335}
49863f82 4336#endif
252b5132
RH		 4337
4338/* Handle a .BLOCK type pseudo-op. */
4339
4340static void
4341pa_block (z)
4342 int z;
4343{
4344 char *p;
4345 long int temp_fill;
4346 unsigned int temp_size;
4347 unsigned int i;
4348
49863f82 4349#ifdef OBJ_SOM
252b5132
RH		 4350 /* We must have a valid space and subspace. */
4351 pa_check_current_space_and_subspace ();
49863f82 4352#endif
252b5132
RH		 4353
4354 temp_size = get_absolute_expression ();
4355
4356 /* Always fill with zeros, that's what the HP assembler does. */
4357 temp_fill = 0;
4358
4359 p = frag_var (rs_fill, (int) temp_size, (int) temp_size,
4360 (relax_substateT) 0, (symbolS *) 0, (offsetT) 1, NULL);
4361 memset (p, 0, temp_size);
4362
4363 /* Convert 2 bytes at a time. */
4364
4365 for (i = 0; i < temp_size; i += 2)
4366 {
4367 md_number_to_chars (p + i,
4368 (valueT) temp_fill,
4369 (int) ((temp_size - i) > 2 ? 2 : (temp_size - i)));
4370 }
4371
4372 pa_undefine_label ();
4373 demand_empty_rest_of_line ();
4374}
4375
4376/* Handle a .begin_brtab and .end_brtab pseudo-op. */
4377
4378static void
4379pa_brtab (begin)
4380 int begin;
4381{
4382
4383#ifdef OBJ_SOM
4384 /* The BRTAB relocations are only availble in SOM (to denote
4385 the beginning and end of branch tables). */
4386 char *where = frag_more (0);
4387
4388 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4389 NULL, (offsetT) 0, NULL,
4390 0, begin ? R_HPPA_BEGIN_BRTAB : R_HPPA_END_BRTAB,
4391 e_fsel, 0, 0, NULL);
4392#endif
4393
4394 demand_empty_rest_of_line ();
4395}
4396
4397/* Handle a .begin_try and .end_try pseudo-op. */
4398
4399static void
4400pa_try (begin)
4401 int begin;
4402{
4403#ifdef OBJ_SOM
4404 expressionS exp;
4405 char *where = frag_more (0);
4406
4407 if (! begin)
4408 expression (&exp);
4409
4410 /* The TRY relocations are only availble in SOM (to denote
4411 the beginning and end of exception handling regions). */
4412
4413 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4414 NULL, (offsetT) 0, begin ? NULL : &exp,
4415 0, begin ? R_HPPA_BEGIN_TRY : R_HPPA_END_TRY,
4416 e_fsel, 0, 0, NULL);
4417#endif
4418
4419 demand_empty_rest_of_line ();
4420}
4421
4422/* Handle a .CALL pseudo-op. This involves storing away information
4423 about where arguments are to be found so the linker can detect
4424 (and correct) argument location mismatches between caller and callee. */
4425
4426static void
4427pa_call (unused)
4428 int unused;
4429{
49863f82 4430#ifdef OBJ_SOM
252b5132
RH		 4431 /* We must have a valid space and subspace. */
4432 pa_check_current_space_and_subspace ();
49863f82 4433#endif
252b5132
RH		 4434
4435 pa_call_args (&last_call_desc);
4436 demand_empty_rest_of_line ();
4437}
4438
4439/* Do the dirty work of building a call descriptor which describes
4440 where the caller placed arguments to a function call. */
4441
4442static void
4443pa_call_args (call_desc)
4444 struct call_desc *call_desc;
4445{
4446 char *name, c, *p;
4447 unsigned int temp, arg_reloc;
4448
4449 while (!is_end_of_statement ())
4450 {
4451 name = input_line_pointer;
4452 c = get_symbol_end ();
4453 /* Process a source argument. */
4454 if ((strncasecmp (name, "argw", 4) == 0))
4455 {
4456 temp = atoi (name + 4);
4457 p = input_line_pointer;
4458 *p = c;
4459 input_line_pointer++;
4460 name = input_line_pointer;
4461 c = get_symbol_end ();
4462 arg_reloc = pa_build_arg_reloc (name);
4463 call_desc->arg_reloc |= pa_align_arg_reloc (temp, arg_reloc);
4464 }
4465 /* Process a return value. */
4466 else if ((strncasecmp (name, "rtnval", 6) == 0))
4467 {
4468 p = input_line_pointer;
4469 *p = c;
4470 input_line_pointer++;
4471 name = input_line_pointer;
4472 c = get_symbol_end ();
4473 arg_reloc = pa_build_arg_reloc (name);
4474 call_desc->arg_reloc |= (arg_reloc & 0x3);
4475 }
4476 else
4477 {
4478 as_bad (_("Invalid .CALL argument: %s"), name);
4479 }
4480 p = input_line_pointer;
4481 *p = c;
4482 if (!is_end_of_statement ())
4483 input_line_pointer++;
4484 }
4485}
4486
4487/* Return TRUE if FRAG1 and FRAG2 are the same. */
4488
4489static int
4490is_same_frag (frag1, frag2)
4491 fragS *frag1;
4492 fragS *frag2;
4493{
4494
4495 if (frag1 == NULL)
4496 return (FALSE);
4497 else if (frag2 == NULL)
4498 return (FALSE);
4499 else if (frag1 == frag2)
4500 return (TRUE);
4501 else if (frag2->fr_type == rs_fill && frag2->fr_fix == 0)
4502 return (is_same_frag (frag1, frag2->fr_next));
4503 else
4504 return (FALSE);
4505}
4506
4507#ifdef OBJ_ELF
4508/* Build an entry in the UNWIND subspace from the given function
4509 attributes in CALL_INFO. This is not needed for SOM as using
4510 R_ENTRY and R_EXIT relocations allow the linker to handle building
4511 of the unwind spaces. */
4512
4513static void
4514pa_build_unwind_subspace (call_info)
4515 struct call_info *call_info;
4516{
4517 char *unwind;
4518 asection *seg, *save_seg;
46031ca9 4519 asymbol *sym;
252b5132 4520 subsegT subseg, save_subseg;
46031ca9 4521 int i, reloc;
252b5132
RH		 4522 char c, *p;
4523
9100134c
JL		 4524 if (bfd_get_arch_info (stdoutput)->bits_per_address == 32)
4525 reloc = R_PARISC_DIR32;
46031ca9 4526 else
9100134c 4527 reloc = R_PARISC_SEGREL32;
46031ca9 4528
252b5132
RH		 4529 /* Get into the right seg/subseg. This may involve creating
4530 the seg the first time through. Make sure to have the
4531 old seg/subseg so that we can reset things when we are done. */
252b5132
RH		 4532 seg = bfd_get_section_by_name (stdoutput, UNWIND_SECTION_NAME);
4533 if (seg == ASEC_NULL)
4534 {
4535 seg = bfd_make_section_old_way (stdoutput, UNWIND_SECTION_NAME);
4536 bfd_set_section_flags (stdoutput, seg,
4537 SEC_READONLY | SEC_HAS_CONTENTS
4538 | SEC_LOAD | SEC_RELOC);
4539 }
4540
4541 save_seg = now_seg;
4542 save_subseg = now_subseg;
46031ca9 4543 subseg_set (seg, 0);
252b5132
RH		 4544
4545
4546 /* Get some space to hold relocation information for the unwind
4547 descriptor. */
4548 p = frag_more (4);
4549 md_number_to_chars (p, 0, 4);
4550
4551 /* Relocation info. for start offset of the function. */
4552 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
4553 call_info->start_symbol, (offsetT) 0,
46031ca9
JL		 4554 (expressionS *) NULL, 0, reloc,
4555 e_fsel, 32, 0, NULL);
252b5132
RH		 4556
4557 p = frag_more (4);
4558 md_number_to_chars (p, 0, 4);
4559
4560 /* Relocation info. for end offset of the function.
4561
4562 Because we allow reductions of 32bit relocations for ELF, this will be
4563 reduced to section_sym + offset which avoids putting the temporary
4564 symbol into the symbol table. It (should) end up giving the same
4565 value as call_info->start_symbol + function size once the linker is
4566 finished with its work. */
4567
4568 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
4569 call_info->end_symbol, (offsetT) 0,
46031ca9
JL		 4570 (expressionS *) NULL, 0, reloc,
4571 e_fsel, 32, 0, NULL);
252b5132
RH		 4572
4573 /* Dump it. */
4574 unwind = (char *) &call_info->ci_unwind;
4575 for (i = 8; i < sizeof (struct unwind_table); i++)
4576 {
4577 c = *(unwind + i);
4578 {
4579 FRAG_APPEND_1_CHAR (c);
4580 }
4581 }
4582
4583 /* Return back to the original segment/subsegment. */
4584 subseg_set (save_seg, save_subseg);
4585}
4586#endif
4587
4588/* Process a .CALLINFO pseudo-op. This information is used later
4589 to build unwind descriptors and maybe one day to support
4590 .ENTER and .LEAVE. */
4591
4592static void
4593pa_callinfo (unused)
4594 int unused;
4595{
4596 char *name, c, *p;
4597 int temp;
4598
49863f82 4599#ifdef OBJ_SOM
252b5132
RH		 4600 /* We must have a valid space and subspace. */
4601 pa_check_current_space_and_subspace ();
49863f82 4602#endif
252b5132
RH		 4603
4604 /* .CALLINFO must appear within a procedure definition. */
4605 if (!within_procedure)
4606 as_bad (_(".callinfo is not within a procedure definition"));
4607
4608 /* Mark the fact that we found the .CALLINFO for the
4609 current procedure. */
4610 callinfo_found = TRUE;
4611
4612 /* Iterate over the .CALLINFO arguments. */
4613 while (!is_end_of_statement ())
4614 {
4615 name = input_line_pointer;
4616 c = get_symbol_end ();
4617 /* Frame size specification. */
4618 if ((strncasecmp (name, "frame", 5) == 0))
4619 {
4620 p = input_line_pointer;
4621 *p = c;
4622 input_line_pointer++;
4623 temp = get_absolute_expression ();
4624 if ((temp & 0x3) != 0)
4625 {
4626 as_bad (_("FRAME parameter must be a multiple of 8: %d\n"), temp);
4627 temp = 0;
4628 }
4629
4630 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4631 last_call_info->ci_unwind.descriptor.frame_size = temp / 8;
4632
4633 }
4634 /* Entry register (GR, GR and SR) specifications. */
4635 else if ((strncasecmp (name, "entry_gr", 8) == 0))
4636 {
4637 p = input_line_pointer;
4638 *p = c;
4639 input_line_pointer++;
4640 temp = get_absolute_expression ();
4641 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4642 even though %r19 is caller saved. I think this is a bug in
4643 the HP assembler, and we are not going to emulate it. */
4644 if (temp < 3 || temp > 18)
4645 as_bad (_("Value for ENTRY_GR must be in the range 3..18\n"));
4646 last_call_info->ci_unwind.descriptor.entry_gr = temp - 2;
4647 }
4648 else if ((strncasecmp (name, "entry_fr", 8) == 0))
4649 {
4650 p = input_line_pointer;
4651 *p = c;
4652 input_line_pointer++;
4653 temp = get_absolute_expression ();
4654 /* Similarly the HP assembler takes 31 as the high bound even
4655 though %fr21 is the last callee saved floating point register. */
4656 if (temp < 12 || temp > 21)
4657 as_bad (_("Value for ENTRY_FR must be in the range 12..21\n"));
4658 last_call_info->ci_unwind.descriptor.entry_fr = temp - 11;
4659 }
4660 else if ((strncasecmp (name, "entry_sr", 8) == 0))
4661 {
4662 p = input_line_pointer;
4663 *p = c;
4664 input_line_pointer++;
4665 temp = get_absolute_expression ();
4666 if (temp != 3)
4667 as_bad (_("Value for ENTRY_SR must be 3\n"));
4668 }
4669 /* Note whether or not this function performs any calls. */
4670 else if ((strncasecmp (name, "calls", 5) == 0) ||
4671 (strncasecmp (name, "caller", 6) == 0))
4672 {
4673 p = input_line_pointer;
4674 *p = c;
4675 }
4676 else if ((strncasecmp (name, "no_calls", 8) == 0))
4677 {
4678 p = input_line_pointer;
4679 *p = c;
4680 }
4681 /* Should RP be saved into the stack. */
4682 else if ((strncasecmp (name, "save_rp", 7) == 0))
4683 {
4684 p = input_line_pointer;
4685 *p = c;
4686 last_call_info->ci_unwind.descriptor.save_rp = 1;
4687 }
4688 /* Likewise for SP. */
4689 else if ((strncasecmp (name, "save_sp", 7) == 0))
4690 {
4691 p = input_line_pointer;
4692 *p = c;
4693 last_call_info->ci_unwind.descriptor.save_sp = 1;
4694 }
4695 /* Is this an unwindable procedure. If so mark it so
4696 in the unwind descriptor. */
4697 else if ((strncasecmp (name, "no_unwind", 9) == 0))
4698 {
4699 p = input_line_pointer;
4700 *p = c;
4701 last_call_info->ci_unwind.descriptor.cannot_unwind = 1;
4702 }
4703 /* Is this an interrupt routine. If so mark it in the
4704 unwind descriptor. */
4705 else if ((strncasecmp (name, "hpux_int", 7) == 0))
4706 {
4707 p = input_line_pointer;
4708 *p = c;
4709 last_call_info->ci_unwind.descriptor.hpux_interrupt_marker = 1;
4710 }
4711 /* Is this a millicode routine. "millicode" isn't in my
4712 assembler manual, but my copy is old. The HP assembler
4713 accepts it, and there's a place in the unwind descriptor
4714 to drop the information, so we'll accept it too. */
4715 else if ((strncasecmp (name, "millicode", 9) == 0))
4716 {
4717 p = input_line_pointer;
4718 *p = c;
4719 last_call_info->ci_unwind.descriptor.millicode = 1;
4720 }
4721 else
4722 {
4723 as_bad (_("Invalid .CALLINFO argument: %s"), name);
4724 *input_line_pointer = c;
4725 }
4726 if (!is_end_of_statement ())
4727 input_line_pointer++;
4728 }
4729
4730 demand_empty_rest_of_line ();
4731}
4732
4733/* Switch into the code subspace. */
4734
4735static void
4736pa_code (unused)
4737 int unused;
4738{
49863f82 4739#ifdef OBJ_SOM
252b5132
RH		 4740 current_space = is_defined_space ("$TEXT$");
4741 current_subspace
4742 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
49863f82 4743#endif
252b5132
RH		 4744 s_text (0);
4745 pa_undefine_label ();
4746}
4747
4748/* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4749 the .comm pseudo-op has the following symtax:
4750
4751 <label> .comm <length>
4752
4753 where <label> is optional and is a symbol whose address will be the start of
4754 a block of memory <length> bytes long. <length> must be an absolute
4755 expression. <length> bytes will be allocated in the current space
4756 and subspace.
4757
4758 Also note the label may not even be on the same line as the .comm.
4759
4760 This difference in syntax means the colon function will be called
4761 on the symbol before we arrive in pa_comm. colon will set a number
4762 of attributes of the symbol that need to be fixed here. In particular
4763 the value, section pointer, fragment pointer, flags, etc. What
4764 a pain.
4765
4766 This also makes error detection all but impossible. */
4767
4768static void
4769pa_comm (unused)
4770 int unused;
4771{
4772 unsigned int size;
4773 symbolS *symbol;
4774 label_symbol_struct *label_symbol = pa_get_label ();
4775
4776 if (label_symbol)
4777 symbol = label_symbol->lss_label;
4778 else
4779 symbol = NULL;
4780
4781 SKIP_WHITESPACE ();
4782 size = get_absolute_expression ();
4783
4784 if (symbol)
4785 {
4786 S_SET_VALUE (symbol, size);
4787 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
4788 S_SET_EXTERNAL (symbol);
4789
4790 /* colon() has already set the frag to the current location in the
4791 current subspace; we need to reset the fragment to the zero address
4792 fragment. We also need to reset the segment pointer. */
a0f75b47 4793 symbol_set_frag (symbol, &zero_address_frag);
252b5132
RH		 4794 }
4795 demand_empty_rest_of_line ();
4796}
4797
4798/* Process a .END pseudo-op. */
4799
4800static void
4801pa_end (unused)
4802 int unused;
4803{
4804 demand_empty_rest_of_line ();
4805}
4806
4807/* Process a .ENTER pseudo-op. This is not supported. */
4808static void
4809pa_enter (unused)
4810 int unused;
4811{
49863f82 4812#ifdef OBJ_SOM
252b5132
RH		 4813 /* We must have a valid space and subspace. */
4814 pa_check_current_space_and_subspace ();
49863f82 4815#endif
252b5132
RH		 4816
4817 as_bad (_("The .ENTER pseudo-op is not supported"));
4818 demand_empty_rest_of_line ();
4819}
4820
4821/* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4822 procesure. */
4823static void
4824pa_entry (unused)
4825 int unused;
4826{
49863f82 4827#ifdef OBJ_SOM
252b5132
RH		 4828 /* We must have a valid space and subspace. */
4829 pa_check_current_space_and_subspace ();
49863f82 4830#endif
252b5132
RH		 4831
4832 if (!within_procedure)
4833 as_bad (_("Misplaced .entry. Ignored."));
4834 else
4835 {
4836 if (!callinfo_found)
4837 as_bad (_("Missing .callinfo."));
4838 }
4839 demand_empty_rest_of_line ();
4840 within_entry_exit = TRUE;
4841
4842#ifdef OBJ_SOM
4843 /* SOM defers building of unwind descriptors until the link phase.
4844 The assembler is responsible for creating an R_ENTRY relocation
4845 to mark the beginning of a region and hold the unwind bits, and
4846 for creating an R_EXIT relocation to mark the end of the region.
4847
4848 FIXME. ELF should be using the same conventions! The problem
4849 is an unwind requires too much relocation space. Hmmm. Maybe
4850 if we split the unwind bits up between the relocations which
4851 denote the entry and exit points. */
4852 if (last_call_info->start_symbol != NULL)
4853 {
4854 char *where = frag_more (0);
4855
4856 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4857 NULL, (offsetT) 0, NULL,
4858 0, R_HPPA_ENTRY, e_fsel, 0, 0,
4859 (int *) &last_call_info->ci_unwind.descriptor);
4860 }
4861#endif
4862}
4863
4864/* Handle a .EQU pseudo-op. */
4865
4866static void
4867pa_equ (reg)
4868 int reg;
4869{
4870 label_symbol_struct *label_symbol = pa_get_label ();
4871 symbolS *symbol;
4872
4873 if (label_symbol)
4874 {
4875 symbol = label_symbol->lss_label;
4876 if (reg)
4877 S_SET_VALUE (symbol, pa_parse_number (&input_line_pointer, 0));
4878 else
4879 S_SET_VALUE (symbol, (unsigned int) get_absolute_expression ());
4880 S_SET_SEGMENT (symbol, bfd_abs_section_ptr);
4881 }
4882 else
4883 {
4884 if (reg)
4885 as_bad (_(".REG must use a label"));
4886 else
4887 as_bad (_(".EQU must use a label"));
4888 }
4889
4890 pa_undefine_label ();
4891 demand_empty_rest_of_line ();
4892}
4893
4894/* Helper function. Does processing for the end of a function. This
4895 usually involves creating some relocations or building special
4896 symbols to mark the end of the function. */
4897
4898static void
4899process_exit ()
4900{
4901 char *where;
4902
4903 where = frag_more (0);
4904
4905#ifdef OBJ_ELF
4906 /* Mark the end of the function, stuff away the location of the frag
4907 for the end of the function, and finally call pa_build_unwind_subspace
4908 to add an entry in the unwind table. */
4909 hppa_elf_mark_end_of_function ();
4910 pa_build_unwind_subspace (last_call_info);
4911#else
4912 /* SOM defers building of unwind descriptors until the link phase.
4913 The assembler is responsible for creating an R_ENTRY relocation
4914 to mark the beginning of a region and hold the unwind bits, and
4915 for creating an R_EXIT relocation to mark the end of the region.
4916
4917 FIXME. ELF should be using the same conventions! The problem
4918 is an unwind requires too much relocation space. Hmmm. Maybe
4919 if we split the unwind bits up between the relocations which
4920 denote the entry and exit points. */
4921 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4922 NULL, (offsetT) 0,
4923 NULL, 0, R_HPPA_EXIT, e_fsel, 0, 0,
4924 (int *) &last_call_info->ci_unwind.descriptor + 1);
4925#endif
4926}
4927
4928/* Process a .EXIT pseudo-op. */
4929
4930static void
4931pa_exit (unused)
4932 int unused;
4933{
49863f82 4934#ifdef OBJ_SOM
252b5132
RH		 4935 /* We must have a valid space and subspace. */
4936 pa_check_current_space_and_subspace ();
49863f82 4937#endif
252b5132
RH		 4938
4939 if (!within_procedure)
4940 as_bad (_(".EXIT must appear within a procedure"));
4941 else
4942 {
4943 if (!callinfo_found)
4944 as_bad (_("Missing .callinfo"));
4945 else
4946 {
4947 if (!within_entry_exit)
4948 as_bad (_("No .ENTRY for this .EXIT"));
4949 else
4950 {
4951 within_entry_exit = FALSE;
4952 process_exit ();
4953 }
4954 }
4955 }
4956 demand_empty_rest_of_line ();
4957}
4958
4959/* Process a .EXPORT directive. This makes functions external
4960 and provides information such as argument relocation entries
4961 to callers. */
4962
4963static void
4964pa_export (unused)
4965 int unused;
4966{
4967 char *name, c, *p;
4968 symbolS *symbol;
4969
4970 name = input_line_pointer;
4971 c = get_symbol_end ();
4972 /* Make sure the given symbol exists. */
4973 if ((symbol = symbol_find_or_make (name)) == NULL)
4974 {
4975 as_bad (_("Cannot define export symbol: %s\n"), name);
4976 p = input_line_pointer;
4977 *p = c;
4978 input_line_pointer++;
4979 }
4980 else
4981 {
4982 /* OK. Set the external bits and process argument relocations. */
4983 S_SET_EXTERNAL (symbol);
4984 p = input_line_pointer;
4985 *p = c;
4986 if (!is_end_of_statement ())
4987 {
4988 input_line_pointer++;
4989 pa_type_args (symbol, 1);
4990 }
4991 }
4992
4993 demand_empty_rest_of_line ();
4994}
4995
4996/* Helper function to process arguments to a .EXPORT pseudo-op. */
4997
4998static void
4999pa_type_args (symbolP, is_export)
5000 symbolS *symbolP;
5001 int is_export;
5002{
5003 char *name, c, *p;
5004 unsigned int temp, arg_reloc;
5005 pa_symbol_type type = SYMBOL_TYPE_UNKNOWN;
a0f75b47 5006 obj_symbol_type *symbol = (obj_symbol_type *) symbol_get_bfdsym (symbolP);
252b5132
RH		 5007
5008 if (strncasecmp (input_line_pointer, "absolute", 8) == 0)
5009
5010 {
5011 input_line_pointer += 8;
a0f75b47 5012 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5013 S_SET_SEGMENT (symbolP, bfd_abs_section_ptr);
5014 type = SYMBOL_TYPE_ABSOLUTE;
5015 }
5016 else if (strncasecmp (input_line_pointer, "code", 4) == 0)
5017 {
5018 input_line_pointer += 4;
5019 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
5020 instead one should be IMPORTing/EXPORTing ENTRY types.
5021
5022 Complain if one tries to EXPORT a CODE type since that's never
5023 done. Both GCC and HP C still try to IMPORT CODE types, so
5024 silently fix them to be ENTRY types. */
a0f75b47 5025 if (S_IS_FUNCTION (symbolP))
252b5132
RH		 5026 {
5027 if (is_export)
a0f75b47
ILT		 5028 as_tsktsk (_("Using ENTRY rather than CODE in export directive for %s"),
5029 S_GET_NAME (symbolP));
252b5132 5030
a0f75b47 5031 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5032 type = SYMBOL_TYPE_ENTRY;
5033 }
5034 else
5035 {
a0f75b47 5036 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5037 type = SYMBOL_TYPE_CODE;
5038 }
5039 }
5040 else if (strncasecmp (input_line_pointer, "data", 4) == 0)
5041 {
5042 input_line_pointer += 4;
a0f75b47 5043 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5044 type = SYMBOL_TYPE_DATA;
5045 }
5046 else if ((strncasecmp (input_line_pointer, "entry", 5) == 0))
5047 {
5048 input_line_pointer += 5;
a0f75b47 5049 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5050 type = SYMBOL_TYPE_ENTRY;
5051 }
5052 else if (strncasecmp (input_line_pointer, "millicode", 9) == 0)
5053 {
5054 input_line_pointer += 9;
a0f75b47 5055 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5056 type = SYMBOL_TYPE_MILLICODE;
5057 }
5058 else if (strncasecmp (input_line_pointer, "plabel", 6) == 0)
5059 {
5060 input_line_pointer += 6;
a0f75b47 5061 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5062 type = SYMBOL_TYPE_PLABEL;
5063 }
5064 else if (strncasecmp (input_line_pointer, "pri_prog", 8) == 0)
5065 {
5066 input_line_pointer += 8;
a0f75b47 5067 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5068 type = SYMBOL_TYPE_PRI_PROG;
5069 }
5070 else if (strncasecmp (input_line_pointer, "sec_prog", 8) == 0)
5071 {
5072 input_line_pointer += 8;
a0f75b47 5073 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5074 type = SYMBOL_TYPE_SEC_PROG;
5075 }
5076
5077 /* SOM requires much more information about symbol types
5078 than BFD understands. This is how we get this information
5079 to the SOM BFD backend. */
5080#ifdef obj_set_symbol_type
a0f75b47 5081 obj_set_symbol_type (symbol_get_bfdsym (symbolP), (int) type);
252b5132
RH		 5082#endif
5083
5084 /* Now that the type of the exported symbol has been handled,
5085 handle any argument relocation information. */
5086 while (!is_end_of_statement ())
5087 {
5088 if (*input_line_pointer == ',')
5089 input_line_pointer++;
5090 name = input_line_pointer;
5091 c = get_symbol_end ();
5092 /* Argument sources. */
5093 if ((strncasecmp (name, "argw", 4) == 0))
5094 {
5095 p = input_line_pointer;
5096 *p = c;
5097 input_line_pointer++;
5098 temp = atoi (name + 4);
5099 name = input_line_pointer;
5100 c = get_symbol_end ();
5101 arg_reloc = pa_align_arg_reloc (temp, pa_build_arg_reloc (name));
49863f82 5102#ifdef OBJ_SOM
252b5132 5103 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
49863f82 5104#endif
252b5132
RH		 5105 *input_line_pointer = c;
5106 }
5107 /* The return value. */
5108 else if ((strncasecmp (name, "rtnval", 6)) == 0)
5109 {
5110 p = input_line_pointer;
5111 *p = c;
5112 input_line_pointer++;
5113 name = input_line_pointer;
5114 c = get_symbol_end ();
5115 arg_reloc = pa_build_arg_reloc (name);
49863f82 5116#ifdef OBJ_SOM
252b5132 5117 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
49863f82 5118#endif
252b5132
RH		 5119 *input_line_pointer = c;
5120 }
5121 /* Privelege level. */
5122 else if ((strncasecmp (name, "priv_lev", 8)) == 0)
5123 {
5124 p = input_line_pointer;
5125 *p = c;
5126 input_line_pointer++;
5127 temp = atoi (input_line_pointer);
49863f82 5128#ifdef OBJ_SOM
252b5132 5129 symbol->tc_data.ap.hppa_priv_level = temp;
49863f82 5130#endif
252b5132
RH		 5131 c = get_symbol_end ();
5132 *input_line_pointer = c;
5133 }
5134 else
5135 {
5136 as_bad (_("Undefined .EXPORT/.IMPORT argument (ignored): %s"), name);
5137 p = input_line_pointer;
5138 *p = c;
5139 }
5140 if (!is_end_of_statement ())
5141 input_line_pointer++;
5142 }
5143}
5144
5145/* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
5146 assembly file must either be defined in the assembly file, or
5147 explicitly IMPORTED from another. */
5148
5149static void
5150pa_import (unused)
5151 int unused;
5152{
5153 char *name, c, *p;
5154 symbolS *symbol;
5155
5156 name = input_line_pointer;
5157 c = get_symbol_end ();
5158
5159 symbol = symbol_find (name);
5160 /* Ugh. We might be importing a symbol defined earlier in the file,
5161 in which case all the code below will really screw things up
5162 (set the wrong segment, symbol flags & type, etc). */
5163 if (symbol == NULL || !S_IS_DEFINED (symbol))
5164 {
5165 symbol = symbol_find_or_make (name);
5166 p = input_line_pointer;
5167 *p = c;
5168
5169 if (!is_end_of_statement ())
5170 {
5171 input_line_pointer++;
5172 pa_type_args (symbol, 0);
5173 }
5174 else
5175 {
5176 /* Sigh. To be compatable with the HP assembler and to help
5177 poorly written assembly code, we assign a type based on
5178 the the current segment. Note only BSF_FUNCTION really
5179 matters, we do not need to set the full SYMBOL_TYPE_* info. */
5180 if (now_seg == text_section)
a0f75b47 5181 symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION;
252b5132
RH		 5182
5183 /* If the section is undefined, then the symbol is undefined
5184 Since this is an import, leave the section undefined. */
5185 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
5186 }
5187 }
5188 else
5189 {
5190 /* The symbol was already defined. Just eat everything up to
5191 the end of the current statement. */
5192 while (!is_end_of_statement ())
5193 input_line_pointer++;
5194 }
5195
5196 demand_empty_rest_of_line ();
5197}
5198
5199/* Handle a .LABEL pseudo-op. */
5200
5201static void
5202pa_label (unused)
5203 int unused;
5204{
5205 char *name, c, *p;
5206
5207 name = input_line_pointer;
5208 c = get_symbol_end ();
5209
5210 if (strlen (name) > 0)
5211 {
5212 colon (name);
5213 p = input_line_pointer;
5214 *p = c;
5215 }
5216 else
5217 {
5218 as_warn (_("Missing label name on .LABEL"));
5219 }
5220
5221 if (!is_end_of_statement ())
5222 {
5223 as_warn (_("extra .LABEL arguments ignored."));
5224 ignore_rest_of_line ();
5225 }
5226 demand_empty_rest_of_line ();
5227}
5228
5229/* Handle a .LEAVE pseudo-op. This is not supported yet. */
5230
5231static void
5232pa_leave (unused)
5233 int unused;
5234{
49863f82 5235#ifdef OBJ_SOM
252b5132
RH		 5236 /* We must have a valid space and subspace. */
5237 pa_check_current_space_and_subspace ();
49863f82 5238#endif
252b5132
RH		 5239
5240 as_bad (_("The .LEAVE pseudo-op is not supported"));
5241 demand_empty_rest_of_line ();
5242}
5243
5244/* Handle a .LEVEL pseudo-op. */
5245
5246static void
5247pa_level (unused)
5248 int unused;
5249{
5250 char *level;
5251
5252 level = input_line_pointer;
5253 if (strncmp (level, "1.0", 3) == 0)
5254 {
5255 input_line_pointer += 3;
5256 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10))
5257 as_warn (_("could not set architecture and machine"));
5258 }
5259 else if (strncmp (level, "1.1", 3) == 0)
5260 {
5261 input_line_pointer += 3;
5262 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 11))
5263 as_warn (_("could not set architecture and machine"));
5264 }
46031ca9
JL		 5265 else if (strncmp (level, "2.0w", 4) == 0)
5266 {
5267 input_line_pointer += 4;
5268 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 25))
5269 as_warn (_("could not set architecture and machine"));
5270 }
252b5132
RH		 5271 else if (strncmp (level, "2.0", 3) == 0)
5272 {
5273 input_line_pointer += 3;
5274 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 20))
5275 as_warn (_("could not set architecture and machine"));
5276 }
5277 else
5278 {
5279 as_bad (_("Unrecognized .LEVEL argument\n"));
5280 ignore_rest_of_line ();
5281 }
5282 demand_empty_rest_of_line ();
5283}
5284
5285/* Handle a .ORIGIN pseudo-op. */
5286
5287static void
5288pa_origin (unused)
5289 int unused;
5290{
49863f82 5291#ifdef OBJ_SOM
252b5132
RH		 5292 /* We must have a valid space and subspace. */
5293 pa_check_current_space_and_subspace ();
49863f82 5294#endif
252b5132
RH		 5295
5296 s_org (0);
5297 pa_undefine_label ();
5298}
5299
5300/* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
5301 is for static functions. FIXME. Should share more code with .EXPORT. */
5302
5303static void
5304pa_param (unused)
5305 int unused;
5306{
5307 char *name, c, *p;
5308 symbolS *symbol;
5309
5310 name = input_line_pointer;
5311 c = get_symbol_end ();
5312
5313 if ((symbol = symbol_find_or_make (name)) == NULL)
5314 {
5315 as_bad (_("Cannot define static symbol: %s\n"), name);
5316 p = input_line_pointer;
5317 *p = c;
5318 input_line_pointer++;
5319 }
5320 else
5321 {
5322 S_CLEAR_EXTERNAL (symbol);
5323 p = input_line_pointer;
5324 *p = c;
5325 if (!is_end_of_statement ())
5326 {
5327 input_line_pointer++;
5328 pa_type_args (symbol, 0);
5329 }
5330 }
5331
5332 demand_empty_rest_of_line ();
5333}
5334
5335/* Handle a .PROC pseudo-op. It is used to mark the beginning
5336 of a procedure from a syntatical point of view. */
5337
5338static void
5339pa_proc (unused)
5340 int unused;
5341{
5342 struct call_info *call_info;
5343
49863f82 5344#ifdef OBJ_SOM
252b5132
RH		 5345 /* We must have a valid space and subspace. */
5346 pa_check_current_space_and_subspace ();
49863f82 5347#endif
252b5132
RH		 5348
5349 if (within_procedure)
5350 as_fatal (_("Nested procedures"));
5351
5352 /* Reset global variables for new procedure. */
5353 callinfo_found = FALSE;
5354 within_procedure = TRUE;
5355
5356 /* Create another call_info structure. */
5357 call_info = (struct call_info *) xmalloc (sizeof (struct call_info));
5358
5359 if (!call_info)
5360 as_fatal (_("Cannot allocate unwind descriptor\n"));
5361
5362 memset (call_info, 0, sizeof (struct call_info));
5363
5364 call_info->ci_next = NULL;
5365
5366 if (call_info_root == NULL)
5367 {
5368 call_info_root = call_info;
5369 last_call_info = call_info;
5370 }
5371 else
5372 {
5373 last_call_info->ci_next = call_info;
5374 last_call_info = call_info;
5375 }
5376
5377 /* set up defaults on call_info structure */
5378
5379 call_info->ci_unwind.descriptor.cannot_unwind = 0;
5380 call_info->ci_unwind.descriptor.region_desc = 1;
5381 call_info->ci_unwind.descriptor.hpux_interrupt_marker = 0;
5382
5383 /* If we got a .PROC pseudo-op, we know that the function is defined
5384 locally. Make sure it gets into the symbol table. */
5385 {
5386 label_symbol_struct *label_symbol = pa_get_label ();
5387
5388 if (label_symbol)
5389 {
5390 if (label_symbol->lss_label)
5391 {
5392 last_call_info->start_symbol = label_symbol->lss_label;
a0f75b47 5393 symbol_get_bfdsym (label_symbol->lss_label)->flags |= BSF_FUNCTION;
252b5132
RH		 5394 }
5395 else
5396 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5397 }
5398 else
5399 last_call_info->start_symbol = NULL;
5400 }
5401
5402 demand_empty_rest_of_line ();
5403}
5404
5405/* Process the syntatical end of a procedure. Make sure all the
5406 appropriate pseudo-ops were found within the procedure. */
5407
5408static void
5409pa_procend (unused)
5410 int unused;
5411{
5412
49863f82 5413#ifdef OBJ_SOM
252b5132
RH		 5414 /* We must have a valid space and subspace. */
5415 pa_check_current_space_and_subspace ();
49863f82 5416#endif
252b5132
RH		 5417
5418 /* If we are within a procedure definition, make sure we've
5419 defined a label for the procedure; handle case where the
5420 label was defined after the .PROC directive.
5421
5422 Note there's not need to diddle with the segment or fragment
5423 for the label symbol in this case. We have already switched
5424 into the new $CODE$ subspace at this point. */
5425 if (within_procedure && last_call_info->start_symbol == NULL)
5426 {
5427 label_symbol_struct *label_symbol = pa_get_label ();
5428
5429 if (label_symbol)
5430 {
5431 if (label_symbol->lss_label)
5432 {
5433 last_call_info->start_symbol = label_symbol->lss_label;
a0f75b47
ILT		 5434 symbol_get_bfdsym (label_symbol->lss_label)->flags
5435 |= BSF_FUNCTION;
252b5132
RH		 5436#ifdef OBJ_SOM
5437 /* Also handle allocation of a fixup to hold the unwind
5438 information when the label appears after the proc/procend. */
5439 if (within_entry_exit)
5440 {
5441 char *where = frag_more (0);
5442
5443 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
5444 NULL, (offsetT) 0, NULL,
5445 0, R_HPPA_ENTRY, e_fsel, 0, 0,
5446 (int *) &last_call_info->ci_unwind.descriptor);
5447 }
5448#endif
5449 }
5450 else
5451 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5452 }
5453 else
5454 as_bad (_("Missing function name for .PROC"));
5455 }
5456
5457 if (!within_procedure)
5458 as_bad (_("misplaced .procend"));
5459
5460 if (!callinfo_found)
5461 as_bad (_("Missing .callinfo for this procedure"));
5462
5463 if (within_entry_exit)
5464 as_bad (_("Missing .EXIT for a .ENTRY"));
5465
5466#ifdef OBJ_ELF
5467 /* ELF needs to mark the end of each function so that it can compute
5468 the size of the function (apparently its needed in the symbol table). */
5469 hppa_elf_mark_end_of_function ();
5470#endif
5471
5472 within_procedure = FALSE;
5473 demand_empty_rest_of_line ();
5474 pa_undefine_label ();
5475}
5476
49863f82
JL		 5477/* If VALUE is an exact power of two between zero and 2^31, then
5478 return log2 (VALUE). Else return -1. */
5479
5480static int
5481log2 (value)
5482 int value;
5483{
5484 int shift = 0;
5485
5486 while ((1 << shift) != value && shift < 32)
5487 shift++;
5488
5489 if (shift >= 32)
5490 return -1;
5491 else
5492 return shift;
5493}
5494
5495
5496#ifdef OBJ_SOM
5497/* Check to make sure we have a valid space and subspace. */
5498
5499static void
5500pa_check_current_space_and_subspace ()
5501{
5502 if (current_space == NULL)
5503 as_fatal (_("Not in a space.\n"));
5504
5505 if (current_subspace == NULL)
5506 as_fatal (_("Not in a subspace.\n"));
5507}
5508
252b5132
RH		 5509/* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5510 then create a new space entry to hold the information specified
5511 by the parameters to the .SPACE directive. */
5512
5513static sd_chain_struct *
5514pa_parse_space_stmt (space_name, create_flag)
5515 char *space_name;
5516 int create_flag;
5517{
5518 char *name, *ptemp, c;
5519 char loadable, defined, private, sort;
5520 int spnum, temp;
5521 asection *seg = NULL;
5522 sd_chain_struct *space;
5523
5524 /* load default values */
5525 spnum = 0;
5526 sort = 0;
5527 loadable = TRUE;
5528 defined = TRUE;
5529 private = FALSE;
5530 if (strcmp (space_name, "$TEXT$") == 0)
5531 {
5532 seg = pa_def_spaces[0].segment;
5533 defined = pa_def_spaces[0].defined;
5534 private = pa_def_spaces[0].private;
5535 sort = pa_def_spaces[0].sort;
5536 spnum = pa_def_spaces[0].spnum;
5537 }
5538 else if (strcmp (space_name, "$PRIVATE$") == 0)
5539 {
5540 seg = pa_def_spaces[1].segment;
5541 defined = pa_def_spaces[1].defined;
5542 private = pa_def_spaces[1].private;
5543 sort = pa_def_spaces[1].sort;
5544 spnum = pa_def_spaces[1].spnum;
5545 }
5546
5547 if (!is_end_of_statement ())
5548 {
5549 print_errors = FALSE;
5550 ptemp = input_line_pointer + 1;
5551 /* First see if the space was specified as a number rather than
5552 as a name. According to the PA assembly manual the rest of
5553 the line should be ignored. */
5554 temp = pa_parse_number (&ptemp, 0);
5555 if (temp >= 0)
5556 {
5557 spnum = temp;
5558 input_line_pointer = ptemp;
5559 }
5560 else
5561 {
5562 while (!is_end_of_statement ())
5563 {
5564 input_line_pointer++;
5565 name = input_line_pointer;
5566 c = get_symbol_end ();
5567 if ((strncasecmp (name, "spnum", 5) == 0))
5568 {
5569 *input_line_pointer = c;
5570 input_line_pointer++;
5571 spnum = get_absolute_expression ();
5572 }
5573 else if ((strncasecmp (name, "sort", 4) == 0))
5574 {
5575 *input_line_pointer = c;
5576 input_line_pointer++;
5577 sort = get_absolute_expression ();
5578 }
5579 else if ((strncasecmp (name, "unloadable", 10) == 0))
5580 {
5581 *input_line_pointer = c;
5582 loadable = FALSE;
5583 }
5584 else if ((strncasecmp (name, "notdefined", 10) == 0))
5585 {
5586 *input_line_pointer = c;
5587 defined = FALSE;
5588 }
5589 else if ((strncasecmp (name, "private", 7) == 0))
5590 {
5591 *input_line_pointer = c;
5592 private = TRUE;
5593 }
5594 else
5595 {
5596 as_bad (_("Invalid .SPACE argument"));
5597 *input_line_pointer = c;
5598 if (!is_end_of_statement ())
5599 input_line_pointer++;
5600 }
5601 }
5602 }
5603 print_errors = TRUE;
5604 }
5605
5606 if (create_flag && seg == NULL)
5607 seg = subseg_new (space_name, 0);
5608
5609 /* If create_flag is nonzero, then create the new space with
5610 the attributes computed above. Else set the values in
5611 an already existing space -- this can only happen for
5612 the first occurence of a built-in space. */
5613 if (create_flag)
5614 space = create_new_space (space_name, spnum, loadable, defined,
5615 private, sort, seg, 1);
5616 else
5617 {
5618 space = is_defined_space (space_name);
5619 SPACE_SPNUM (space) = spnum;
5620 SPACE_DEFINED (space) = defined & 1;
5621 SPACE_USER_DEFINED (space) = 1;
5622 }
5623
5624#ifdef obj_set_section_attributes
5625 obj_set_section_attributes (seg, defined, private, sort, spnum);
5626#endif
5627
5628 return space;
5629}
5630
5631/* Handle a .SPACE pseudo-op; this switches the current space to the
5632 given space, creating the new space if necessary. */
5633
5634static void
5635pa_space (unused)
5636 int unused;
5637{
5638 char *name, c, *space_name, *save_s;
5639 int temp;
5640 sd_chain_struct *sd_chain;
5641
5642 if (within_procedure)
5643 {
5644 as_bad (_("Can\'t change spaces within a procedure definition. Ignored"));
5645 ignore_rest_of_line ();
5646 }
5647 else
5648 {
5649 /* Check for some of the predefined spaces. FIXME: most of the code
5650 below is repeated several times, can we extract the common parts
5651 and place them into a subroutine or something similar? */
5652 /* FIXME Is this (and the next IF stmt) really right?
5653 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5654 if (strncmp (input_line_pointer, "$TEXT$", 6) == 0)
5655 {
5656 input_line_pointer += 6;
5657 sd_chain = is_defined_space ("$TEXT$");
5658 if (sd_chain == NULL)
5659 sd_chain = pa_parse_space_stmt ("$TEXT$", 1);
5660 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5661 sd_chain = pa_parse_space_stmt ("$TEXT$", 0);
5662
5663 current_space = sd_chain;
5664 subseg_set (text_section, sd_chain->sd_last_subseg);
5665 current_subspace
5666 = pa_subsegment_to_subspace (text_section,
5667 sd_chain->sd_last_subseg);
5668 demand_empty_rest_of_line ();
5669 return;
5670 }
5671 if (strncmp (input_line_pointer, "$PRIVATE$", 9) == 0)
5672 {
5673 input_line_pointer += 9;
5674 sd_chain = is_defined_space ("$PRIVATE$");
5675 if (sd_chain == NULL)
5676 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 1);
5677 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5678 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 0);
5679
5680 current_space = sd_chain;
5681 subseg_set (data_section, sd_chain->sd_last_subseg);
5682 current_subspace
5683 = pa_subsegment_to_subspace (data_section,
5684 sd_chain->sd_last_subseg);
5685 demand_empty_rest_of_line ();
5686 return;
5687 }
5688 if (!strncasecmp (input_line_pointer,
5689 GDB_DEBUG_SPACE_NAME,
5690 strlen (GDB_DEBUG_SPACE_NAME)))
5691 {
5692 input_line_pointer += strlen (GDB_DEBUG_SPACE_NAME);
5693 sd_chain = is_defined_space (GDB_DEBUG_SPACE_NAME);
5694 if (sd_chain == NULL)
5695 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 1);
5696 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5697 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 0);
5698
5699 current_space = sd_chain;
5700
5701 {
5702 asection *gdb_section
5703 = bfd_make_section_old_way (stdoutput, GDB_DEBUG_SPACE_NAME);
5704
5705 subseg_set (gdb_section, sd_chain->sd_last_subseg);
5706 current_subspace
5707 = pa_subsegment_to_subspace (gdb_section,
5708 sd_chain->sd_last_subseg);
5709 }
5710 demand_empty_rest_of_line ();
5711 return;
5712 }
5713
5714 /* It could be a space specified by number. */
5715 print_errors = 0;
5716 save_s = input_line_pointer;
5717 if ((temp = pa_parse_number (&input_line_pointer, 0)) >= 0)
5718 {
5719 if ((sd_chain = pa_find_space_by_number (temp)))
5720 {
5721 current_space = sd_chain;
5722
5723 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
5724 current_subspace
5725 = pa_subsegment_to_subspace (sd_chain->sd_seg,
5726 sd_chain->sd_last_subseg);
5727 demand_empty_rest_of_line ();
5728 return;
5729 }
5730 }
5731
5732 /* Not a number, attempt to create a new space. */
5733 print_errors = 1;
5734 input_line_pointer = save_s;
5735 name = input_line_pointer;
5736 c = get_symbol_end ();
5737 space_name = xmalloc (strlen (name) + 1);
5738 strcpy (space_name, name);
5739 *input_line_pointer = c;
5740
5741 sd_chain = pa_parse_space_stmt (space_name, 1);
5742 current_space = sd_chain;
5743
5744 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
5745 current_subspace = pa_subsegment_to_subspace (sd_chain->sd_seg,
5746 sd_chain->sd_last_subseg);
5747 demand_empty_rest_of_line ();
5748 }
5749}
5750
5751/* Switch to a new space. (I think). FIXME. */
5752
5753static void
5754pa_spnum (unused)
5755 int unused;
5756{
5757 char *name;
5758 char c;
5759 char *p;
5760 sd_chain_struct *space;
5761
5762 name = input_line_pointer;
5763 c = get_symbol_end ();
5764 space = is_defined_space (name);
5765 if (space)
5766 {
5767 p = frag_more (4);
5768 md_number_to_chars (p, SPACE_SPNUM (space), 4);
5769 }
5770 else
5771 as_warn (_("Undefined space: '%s' Assuming space number = 0."), name);
5772
5773 *input_line_pointer = c;
5774 demand_empty_rest_of_line ();
5775}
5776
252b5132
RH		 5777/* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5778 given subspace, creating the new subspace if necessary.
5779
5780 FIXME. Should mirror pa_space more closely, in particular how
5781 they're broken up into subroutines. */
5782
5783static void
5784pa_subspace (create_new)
5785 int create_new;
5786{
49863f82 5787 char *name, *ss_name, c;
252b5132
RH		 5788 char loadable, code_only, common, dup_common, zero, sort;
5789 int i, access, space_index, alignment, quadrant, applicable, flags;
5790 sd_chain_struct *space;
5791 ssd_chain_struct *ssd;
5792 asection *section;
5793
5794 if (current_space == NULL)
5795 as_fatal (_("Must be in a space before changing or declaring subspaces.\n"));
5796
5797 if (within_procedure)
5798 {
5799 as_bad (_("Can\'t change subspaces within a procedure definition. Ignored"));
5800 ignore_rest_of_line ();
5801 }
5802 else
5803 {
5804 name = input_line_pointer;
5805 c = get_symbol_end ();
5806 ss_name = xmalloc (strlen (name) + 1);
5807 strcpy (ss_name, name);
5808 *input_line_pointer = c;
5809
5810 /* Load default values. */
5811 sort = 0;
5812 access = 0x7f;
5813 loadable = 1;
5814 common = 0;
5815 dup_common = 0;
5816 code_only = 0;
5817 zero = 0;
5818 space_index = ~0;
5819 alignment = 1;
5820 quadrant = 0;
252b5132
RH		 5821
5822 space = current_space;
5823 if (create_new)
5824 ssd = NULL;
5825 else
5826 ssd = is_defined_subspace (ss_name);
5827 /* Allow user to override the builtin attributes of subspaces. But
5828 only allow the attributes to be changed once! */
5829 if (ssd && SUBSPACE_DEFINED (ssd))
5830 {
5831 subseg_set (ssd->ssd_seg, ssd->ssd_subseg);
5832 current_subspace = ssd;
5833 if (!is_end_of_statement ())
5834 as_warn (_("Parameters of an existing subspace can\'t be modified"));
5835 demand_empty_rest_of_line ();
5836 return;
5837 }
5838 else
5839 {
5840 /* A new subspace. Load default values if it matches one of
5841 the builtin subspaces. */
5842 i = 0;
5843 while (pa_def_subspaces[i].name)
5844 {
5845 if (strcasecmp (pa_def_subspaces[i].name, ss_name) == 0)
5846 {
5847 loadable = pa_def_subspaces[i].loadable;
5848 common = pa_def_subspaces[i].common;
5849 dup_common = pa_def_subspaces[i].dup_common;
5850 code_only = pa_def_subspaces[i].code_only;
5851 zero = pa_def_subspaces[i].zero;
5852 space_index = pa_def_subspaces[i].space_index;
5853 alignment = pa_def_subspaces[i].alignment;
5854 quadrant = pa_def_subspaces[i].quadrant;
5855 access = pa_def_subspaces[i].access;
5856 sort = pa_def_subspaces[i].sort;
252b5132
RH		 5857 break;
5858 }
5859 i++;
5860 }
5861 }
5862
5863 /* We should be working with a new subspace now. Fill in
5864 any information as specified by the user. */
5865 if (!is_end_of_statement ())
5866 {
5867 input_line_pointer++;
5868 while (!is_end_of_statement ())
5869 {
5870 name = input_line_pointer;
5871 c = get_symbol_end ();
5872 if ((strncasecmp (name, "quad", 4) == 0))
5873 {
5874 *input_line_pointer = c;
5875 input_line_pointer++;
5876 quadrant = get_absolute_expression ();
5877 }
5878 else if ((strncasecmp (name, "align", 5) == 0))
5879 {
5880 *input_line_pointer = c;
5881 input_line_pointer++;
5882 alignment = get_absolute_expression ();
5883 if (log2 (alignment) == -1)
5884 {
5885 as_bad (_("Alignment must be a power of 2"));
5886 alignment = 1;
5887 }
5888 }
5889 else if ((strncasecmp (name, "access", 6) == 0))
5890 {
5891 *input_line_pointer = c;
5892 input_line_pointer++;
5893 access = get_absolute_expression ();
5894 }
5895 else if ((strncasecmp (name, "sort", 4) == 0))
5896 {
5897 *input_line_pointer = c;
5898 input_line_pointer++;
5899 sort = get_absolute_expression ();
5900 }
5901 else if ((strncasecmp (name, "code_only", 9) == 0))
5902 {
5903 *input_line_pointer = c;
5904 code_only = 1;
5905 }
5906 else if ((strncasecmp (name, "unloadable", 10) == 0))
5907 {
5908 *input_line_pointer = c;
5909 loadable = 0;
5910 }
5911 else if ((strncasecmp (name, "common", 6) == 0))
5912 {
5913 *input_line_pointer = c;
5914 common = 1;
5915 }
5916 else if ((strncasecmp (name, "dup_comm", 8) == 0))
5917 {
5918 *input_line_pointer = c;
5919 dup_common = 1;
5920 }
5921 else if ((strncasecmp (name, "zero", 4) == 0))
5922 {
5923 *input_line_pointer = c;
5924 zero = 1;
5925 }
5926 else if ((strncasecmp (name, "first", 5) == 0))
5927 as_bad (_("FIRST not supported as a .SUBSPACE argument"));
5928 else
5929 as_bad (_("Invalid .SUBSPACE argument"));
5930 if (!is_end_of_statement ())
5931 input_line_pointer++;
5932 }
5933 }
5934
5935 /* Compute a reasonable set of BFD flags based on the information
5936 in the .subspace directive. */
5937 applicable = bfd_applicable_section_flags (stdoutput);
5938 flags = 0;
5939 if (loadable)
5940 flags |= (SEC_ALLOC | SEC_LOAD);
5941 if (code_only)
5942 flags |= SEC_CODE;
5943 if (common || dup_common)
5944 flags |= SEC_IS_COMMON;
5945
5946 flags |= SEC_RELOC | SEC_HAS_CONTENTS;
5947
5948 /* This is a zero-filled subspace (eg BSS). */
5949 if (zero)
5950 flags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
5951
5952 applicable &= flags;
5953
5954 /* If this is an existing subspace, then we want to use the
5955 segment already associated with the subspace.
5956
5957 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5958 lots of sections. It might be a problem in the PA ELF
5959 code, I do not know yet. For now avoid creating anything
5960 but the "standard" sections for ELF. */
5961 if (create_new)
5962 section = subseg_force_new (ss_name, 0);
5963 else if (ssd)
5964 section = ssd->ssd_seg;
252b5132
RH		 5965 else
5966 section = subseg_new (ss_name, 0);
5967
5968 if (zero)
5969 seg_info (section)->bss = 1;
5970
5971 /* Now set the flags. */
5972 bfd_set_section_flags (stdoutput, section, applicable);
5973
5974 /* Record any alignment request for this section. */
5975 record_alignment (section, log2 (alignment));
5976
5977 /* Set the starting offset for this section. */
5978 bfd_set_section_vma (stdoutput, section,
5979 pa_subspace_start (space, quadrant));
5980
5981 /* Now that all the flags are set, update an existing subspace,
5982 or create a new one. */
5983 if (ssd)
5984
5985 current_subspace = update_subspace (space, ss_name, loadable,
5986 code_only, common, dup_common,
5987 sort, zero, access, space_index,
5988 alignment, quadrant,
5989 section);
5990 else
5991 current_subspace = create_new_subspace (space, ss_name, loadable,
5992 code_only, common,
5993 dup_common, zero, sort,
5994 access, space_index,
5995 alignment, quadrant, section);
5996
5997 demand_empty_rest_of_line ();
5998 current_subspace->ssd_seg = section;
5999 subseg_set (current_subspace->ssd_seg, current_subspace->ssd_subseg);
6000 }
6001 SUBSPACE_DEFINED (current_subspace) = 1;
6002}
6003
6004
6005/* Create default space and subspace dictionaries. */
6006
6007static void
6008pa_spaces_begin ()
6009{
6010 int i;
6011
6012 space_dict_root = NULL;
6013 space_dict_last = NULL;
6014
6015 i = 0;
6016 while (pa_def_spaces[i].name)
6017 {
6018 char *name;
6019
6020 /* Pick the right name to use for the new section. */
49863f82 6021 name = pa_def_spaces[i].name;
252b5132
RH		 6022
6023 pa_def_spaces[i].segment = subseg_new (name, 0);
6024 create_new_space (pa_def_spaces[i].name, pa_def_spaces[i].spnum,
6025 pa_def_spaces[i].loadable, pa_def_spaces[i].defined,
6026 pa_def_spaces[i].private, pa_def_spaces[i].sort,
6027 pa_def_spaces[i].segment, 0);
6028 i++;
6029 }
6030
6031 i = 0;
6032 while (pa_def_subspaces[i].name)
6033 {
6034 char *name;
6035 int applicable, subsegment;
6036 asection *segment = NULL;
6037 sd_chain_struct *space;
6038
6039 /* Pick the right name for the new section and pick the right
6040 subsegment number. */
49863f82
JL		 6041 name = pa_def_subspaces[i].name;
6042 subsegment = 0;
252b5132
RH		 6043
6044 /* Create the new section. */
6045 segment = subseg_new (name, subsegment);
6046
6047
6048 /* For SOM we want to replace the standard .text, .data, and .bss
6049 sections with our own. We also want to set BFD flags for
6050 all the built-in subspaces. */
49863f82 6051 if (!strcmp (pa_def_subspaces[i].name, "$CODE$"))
252b5132
RH		 6052 {
6053 text_section = segment;
6054 applicable = bfd_applicable_section_flags (stdoutput);
6055 bfd_set_section_flags (stdoutput, segment,
6056 applicable & (SEC_ALLOC | SEC_LOAD
6057 | SEC_RELOC | SEC_CODE
6058 | SEC_READONLY
6059 | SEC_HAS_CONTENTS));
6060 }
49863f82 6061 else if (!strcmp (pa_def_subspaces[i].name, "$DATA$"))
252b5132
RH		 6062 {
6063 data_section = segment;
6064 applicable = bfd_applicable_section_flags (stdoutput);
6065 bfd_set_section_flags (stdoutput, segment,
6066 applicable & (SEC_ALLOC | SEC_LOAD
6067 | SEC_RELOC
6068 | SEC_HAS_CONTENTS));
6069
6070
6071 }
49863f82 6072 else if (!strcmp (pa_def_subspaces[i].name, "$BSS$"))
252b5132
RH		 6073 {
6074 bss_section = segment;
6075 applicable = bfd_applicable_section_flags (stdoutput);
6076 bfd_set_section_flags (stdoutput, segment,
6077 applicable & SEC_ALLOC);
6078 }
49863f82 6079 else if (!strcmp (pa_def_subspaces[i].name, "$LIT$"))
252b5132
RH		 6080 {
6081 applicable = bfd_applicable_section_flags (stdoutput);
6082 bfd_set_section_flags (stdoutput, segment,
6083 applicable & (SEC_ALLOC | SEC_LOAD
6084 | SEC_RELOC
6085 | SEC_READONLY
6086 | SEC_HAS_CONTENTS));
6087 }
49863f82 6088 else if (!strcmp (pa_def_subspaces[i].name, "$MILLICODE$"))
252b5132
RH		 6089 {
6090 applicable = bfd_applicable_section_flags (stdoutput);
6091 bfd_set_section_flags (stdoutput, segment,
6092 applicable & (SEC_ALLOC | SEC_LOAD
6093 | SEC_RELOC
6094 | SEC_READONLY
6095 | SEC_HAS_CONTENTS));
6096 }
49863f82 6097 else if (!strcmp (pa_def_subspaces[i].name, "$UNWIND$"))
252b5132
RH		 6098 {
6099 applicable = bfd_applicable_section_flags (stdoutput);
6100 bfd_set_section_flags (stdoutput, segment,
6101 applicable & (SEC_ALLOC | SEC_LOAD
6102 | SEC_RELOC
6103 | SEC_READONLY
6104 | SEC_HAS_CONTENTS));
6105 }
6106
6107 /* Find the space associated with this subspace. */
6108 space = pa_segment_to_space (pa_def_spaces[pa_def_subspaces[i].
6109 def_space_index].segment);
6110 if (space == NULL)
6111 {
6112 as_fatal (_("Internal error: Unable to find containing space for %s."),
6113 pa_def_subspaces[i].name);
6114 }
6115
6116 create_new_subspace (space, name,
6117 pa_def_subspaces[i].loadable,
6118 pa_def_subspaces[i].code_only,
6119 pa_def_subspaces[i].common,
6120 pa_def_subspaces[i].dup_common,
6121 pa_def_subspaces[i].zero,
6122 pa_def_subspaces[i].sort,
6123 pa_def_subspaces[i].access,
6124 pa_def_subspaces[i].space_index,
6125 pa_def_subspaces[i].alignment,
6126 pa_def_subspaces[i].quadrant,
6127 segment);
6128 i++;
6129 }
6130}
6131
6132
6133
6134/* Create a new space NAME, with the appropriate flags as defined
6135 by the given parameters. */
6136
6137static sd_chain_struct *
6138create_new_space (name, spnum, loadable, defined, private,
6139 sort, seg, user_defined)
6140 char *name;
6141 int spnum;
6142 int loadable;
6143 int defined;
6144 int private;
6145 int sort;
6146 asection *seg;
6147 int user_defined;
6148{
6149 sd_chain_struct *chain_entry;
6150
6151 chain_entry = (sd_chain_struct *) xmalloc (sizeof (sd_chain_struct));
6152 if (!chain_entry)
6153 as_fatal (_("Out of memory: could not allocate new space chain entry: %s\n"),
6154 name);
6155
6156 SPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6157 strcpy (SPACE_NAME (chain_entry), name);
6158 SPACE_DEFINED (chain_entry) = defined;
6159 SPACE_USER_DEFINED (chain_entry) = user_defined;
6160 SPACE_SPNUM (chain_entry) = spnum;
6161
6162 chain_entry->sd_seg = seg;
6163 chain_entry->sd_last_subseg = -1;
6164 chain_entry->sd_subspaces = NULL;
6165 chain_entry->sd_next = NULL;
6166
6167 /* Find spot for the new space based on its sort key. */
6168 if (!space_dict_last)
6169 space_dict_last = chain_entry;
6170
6171 if (space_dict_root == NULL)
6172 space_dict_root = chain_entry;
6173 else
6174 {
6175 sd_chain_struct *chain_pointer;
6176 sd_chain_struct *prev_chain_pointer;
6177
6178 chain_pointer = space_dict_root;
6179 prev_chain_pointer = NULL;
6180
6181 while (chain_pointer)
6182 {
6183 prev_chain_pointer = chain_pointer;
6184 chain_pointer = chain_pointer->sd_next;
6185 }
6186
6187 /* At this point we've found the correct place to add the new
6188 entry. So add it and update the linked lists as appropriate. */
6189 if (prev_chain_pointer)
6190 {
6191 chain_entry->sd_next = chain_pointer;
6192 prev_chain_pointer->sd_next = chain_entry;
6193 }
6194 else
6195 {
6196 space_dict_root = chain_entry;
6197 chain_entry->sd_next = chain_pointer;
6198 }
6199
6200 if (chain_entry->sd_next == NULL)
6201 space_dict_last = chain_entry;
6202 }
6203
6204 /* This is here to catch predefined spaces which do not get
6205 modified by the user's input. Another call is found at
6206 the bottom of pa_parse_space_stmt to handle cases where
6207 the user modifies a predefined space. */
6208#ifdef obj_set_section_attributes
6209 obj_set_section_attributes (seg, defined, private, sort, spnum);
6210#endif
6211
6212 return chain_entry;
6213}
6214
6215/* Create a new subspace NAME, with the appropriate flags as defined
6216 by the given parameters.
6217
6218 Add the new subspace to the subspace dictionary chain in numerical
6219 order as defined by the SORT entries. */
6220
6221static ssd_chain_struct *
6222create_new_subspace (space, name, loadable, code_only, common,
6223 dup_common, is_zero, sort, access, space_index,
6224 alignment, quadrant, seg)
6225 sd_chain_struct *space;
6226 char *name;
6227 int loadable, code_only, common, dup_common, is_zero;
6228 int sort;
6229 int access;
6230 int space_index;
6231 int alignment;
6232 int quadrant;
6233 asection *seg;
6234{
6235 ssd_chain_struct *chain_entry;
6236
6237 chain_entry = (ssd_chain_struct *) xmalloc (sizeof (ssd_chain_struct));
6238 if (!chain_entry)
6239 as_fatal (_("Out of memory: could not allocate new subspace chain entry: %s\n"), name);
6240
6241 SUBSPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6242 strcpy (SUBSPACE_NAME (chain_entry), name);
6243
6244 /* Initialize subspace_defined. When we hit a .subspace directive
6245 we'll set it to 1 which "locks-in" the subspace attributes. */
6246 SUBSPACE_DEFINED (chain_entry) = 0;
6247
49863f82 6248 chain_entry->ssd_subseg = 0;
252b5132
RH		 6249 chain_entry->ssd_seg = seg;
6250 chain_entry->ssd_next = NULL;
6251
6252 /* Find spot for the new subspace based on its sort key. */
6253 if (space->sd_subspaces == NULL)
6254 space->sd_subspaces = chain_entry;
6255 else
6256 {
6257 ssd_chain_struct *chain_pointer;
6258 ssd_chain_struct *prev_chain_pointer;
6259
6260 chain_pointer = space->sd_subspaces;
6261 prev_chain_pointer = NULL;
6262
6263 while (chain_pointer)
6264 {
6265 prev_chain_pointer = chain_pointer;
6266 chain_pointer = chain_pointer->ssd_next;
6267 }
6268
6269 /* Now we have somewhere to put the new entry. Insert it and update
6270 the links. */
6271 if (prev_chain_pointer)
6272 {
6273 chain_entry->ssd_next = chain_pointer;
6274 prev_chain_pointer->ssd_next = chain_entry;
6275 }
6276 else
6277 {
6278 space->sd_subspaces = chain_entry;
6279 chain_entry->ssd_next = chain_pointer;
6280 }
6281 }
6282
6283#ifdef obj_set_subsection_attributes
6284 obj_set_subsection_attributes (seg, space->sd_seg, access,
6285 sort, quadrant);
6286#endif
6287
6288 return chain_entry;
6289}
6290
6291/* Update the information for the given subspace based upon the
6292 various arguments. Return the modified subspace chain entry. */
6293
6294static ssd_chain_struct *
6295update_subspace (space, name, loadable, code_only, common, dup_common, sort,
6296 zero, access, space_index, alignment, quadrant, section)
6297 sd_chain_struct *space;
6298 char *name;
6299 int loadable;
6300 int code_only;
6301 int common;
6302 int dup_common;
6303 int zero;
6304 int sort;
6305 int access;
6306 int space_index;
6307 int alignment;
6308 int quadrant;
6309 asection *section;
6310{
6311 ssd_chain_struct *chain_entry;
6312
6313 chain_entry = is_defined_subspace (name);
6314
6315#ifdef obj_set_subsection_attributes
6316 obj_set_subsection_attributes (section, space->sd_seg, access,
6317 sort, quadrant);
6318#endif
6319
6320 return chain_entry;
6321}
6322
6323/* Return the space chain entry for the space with the name NAME or
6324 NULL if no such space exists. */
6325
6326static sd_chain_struct *
6327is_defined_space (name)
6328 char *name;
6329{
6330 sd_chain_struct *chain_pointer;
6331
6332 for (chain_pointer = space_dict_root;
6333 chain_pointer;
6334 chain_pointer = chain_pointer->sd_next)
6335 {
6336 if (strcmp (SPACE_NAME (chain_pointer), name) == 0)
6337 return chain_pointer;
6338 }
6339
6340 /* No mapping from segment to space was found. Return NULL. */
6341 return NULL;
6342}
6343
6344/* Find and return the space associated with the given seg. If no mapping
6345 from the given seg to a space is found, then return NULL.
6346
6347 Unlike subspaces, the number of spaces is not expected to grow much,
6348 so a linear exhaustive search is OK here. */
6349
6350static sd_chain_struct *
6351pa_segment_to_space (seg)
6352 asection *seg;
6353{
6354 sd_chain_struct *space_chain;
6355
6356 /* Walk through each space looking for the correct mapping. */
6357 for (space_chain = space_dict_root;
6358 space_chain;
6359 space_chain = space_chain->sd_next)
6360 {
6361 if (space_chain->sd_seg == seg)
6362 return space_chain;
6363 }
6364
6365 /* Mapping was not found. Return NULL. */
6366 return NULL;
6367}
6368
6369/* Return the space chain entry for the subspace with the name NAME or
6370 NULL if no such subspace exists.
6371
6372 Uses a linear search through all the spaces and subspaces, this may
6373 not be appropriate if we ever being placing each function in its
6374 own subspace. */
6375
6376static ssd_chain_struct *
6377is_defined_subspace (name)
6378 char *name;
6379{
6380 sd_chain_struct *space_chain;
6381 ssd_chain_struct *subspace_chain;
6382
6383 /* Walk through each space. */
6384 for (space_chain = space_dict_root;
6385 space_chain;
6386 space_chain = space_chain->sd_next)
6387 {
6388 /* Walk through each subspace looking for a name which matches. */
6389 for (subspace_chain = space_chain->sd_subspaces;
6390 subspace_chain;
6391 subspace_chain = subspace_chain->ssd_next)
6392 if (strcmp (SUBSPACE_NAME (subspace_chain), name) == 0)
6393 return subspace_chain;
6394 }
6395
6396 /* Subspace wasn't found. Return NULL. */
6397 return NULL;
6398}
6399
6400/* Find and return the subspace associated with the given seg. If no
6401 mapping from the given seg to a subspace is found, then return NULL.
6402
6403 If we ever put each procedure/function within its own subspace
6404 (to make life easier on the compiler and linker), then this will have
6405 to become more efficient. */
6406
6407static ssd_chain_struct *
6408pa_subsegment_to_subspace (seg, subseg)
6409 asection *seg;
6410 subsegT subseg;
6411{
6412 sd_chain_struct *space_chain;
6413 ssd_chain_struct *subspace_chain;
6414
6415 /* Walk through each space. */
6416 for (space_chain = space_dict_root;
6417 space_chain;
6418 space_chain = space_chain->sd_next)
6419 {
6420 if (space_chain->sd_seg == seg)
6421 {
6422 /* Walk through each subspace within each space looking for
6423 the correct mapping. */
6424 for (subspace_chain = space_chain->sd_subspaces;
6425 subspace_chain;
6426 subspace_chain = subspace_chain->ssd_next)
6427 if (subspace_chain->ssd_subseg == (int) subseg)
6428 return subspace_chain;
6429 }
6430 }
6431
6432 /* No mapping from subsegment to subspace found. Return NULL. */
6433 return NULL;
6434}
6435
6436/* Given a number, try and find a space with the name number.
6437
6438 Return a pointer to a space dictionary chain entry for the space
6439 that was found or NULL on failure. */
6440
6441static sd_chain_struct *
6442pa_find_space_by_number (number)
6443 int number;
6444{
6445 sd_chain_struct *space_chain;
6446
6447 for (space_chain = space_dict_root;
6448 space_chain;
6449 space_chain = space_chain->sd_next)
6450 {
6451 if (SPACE_SPNUM (space_chain) == (unsigned int) number)
6452 return space_chain;
6453 }
6454
6455 /* No appropriate space found. Return NULL. */
6456 return NULL;
6457}
6458
6459/* Return the starting address for the given subspace. If the starting
6460 address is unknown then return zero. */
6461
6462static unsigned int
6463pa_subspace_start (space, quadrant)
6464 sd_chain_struct *space;
6465 int quadrant;
6466{
252b5132
RH		 6467 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6468 is not correct for the PA OSF1 port. */
6469 if ((strcmp (SPACE_NAME (space), "$PRIVATE$") == 0) && quadrant == 1)
6470 return 0x40000000;
6471 else if (space->sd_seg == data_section && quadrant == 1)
6472 return 0x40000000;
6473 else
6474 return 0;
252b5132
RH		 6475 return 0;
6476}
6477
6478/* FIXME. Needs documentation. */
6479static int
6480pa_next_subseg (space)
6481 sd_chain_struct *space;
6482{
6483
6484 space->sd_last_subseg++;
6485 return space->sd_last_subseg;
6486}
49863f82 6487#endif
252b5132
RH		 6488
6489/* Helper function for pa_stringer. Used to find the end of
6490 a string. */
6491
6492static unsigned int
6493pa_stringer_aux (s)
6494 char *s;
6495{
6496 unsigned int c = *s & CHAR_MASK;
6497
49863f82 6498#ifdef OBJ_SOM
252b5132
RH		 6499 /* We must have a valid space and subspace. */
6500 pa_check_current_space_and_subspace ();
49863f82 6501#endif
252b5132
RH		 6502
6503 switch (c)
6504 {
6505 case '\"':
6506 c = NOT_A_CHAR;
6507 break;
6508 default:
6509 break;
6510 }
6511 return c;
6512}
6513
6514/* Handle a .STRING type pseudo-op. */
6515
6516static void
6517pa_stringer (append_zero)
6518 int append_zero;
6519{
6520 char *s, num_buf[4];
6521 unsigned int c;
6522 int i;
6523
6524 /* Preprocess the string to handle PA-specific escape sequences.
6525 For example, \xDD where DD is a hexidecimal number should be
6526 changed to \OOO where OOO is an octal number. */
6527
6528 /* Skip the opening quote. */
6529 s = input_line_pointer + 1;
6530
6531 while (is_a_char (c = pa_stringer_aux (s++)))
6532 {
6533 if (c == '\\')
6534 {
6535 c = *s;
6536 switch (c)
6537 {
6538 /* Handle \x<num>. */
6539 case 'x':
6540 {
6541 unsigned int number;
6542 int num_digit;
6543 char dg;
6544 char *s_start = s;
6545
6546 /* Get pas the 'x'. */
6547 s++;
6548 for (num_digit = 0, number = 0, dg = *s;
6549 num_digit < 2
6550 && (isdigit (dg) || (dg >= 'a' && dg <= 'f')
6551 || (dg >= 'A' && dg <= 'F'));
6552 num_digit++)
6553 {
6554 if (isdigit (dg))
6555 number = number * 16 + dg - '0';
6556 else if (dg >= 'a' && dg <= 'f')
6557 number = number * 16 + dg - 'a' + 10;
6558 else
6559 number = number * 16 + dg - 'A' + 10;
6560
6561 s++;
6562 dg = *s;
6563 }
6564 if (num_digit > 0)
6565 {
6566 switch (num_digit)
6567 {
6568 case 1:
6569 sprintf (num_buf, "%02o", number);
6570 break;
6571 case 2:
6572 sprintf (num_buf, "%03o", number);
6573 break;
6574 }
6575 for (i = 0; i <= num_digit; i++)
6576 s_start[i] = num_buf[i];
6577 }
6578 break;
6579 }
6580 /* This might be a "\"", skip over the escaped char. */
6581 default:
6582 s++;
6583 break;
6584 }
6585 }
6586 }
6587 stringer (append_zero);
6588 pa_undefine_label ();
6589}
6590
6591/* Handle a .VERSION pseudo-op. */
6592
6593static void
6594pa_version (unused)
6595 int unused;
6596{
6597 obj_version (0);
6598 pa_undefine_label ();
6599}
6600
6601#ifdef OBJ_SOM
6602
6603/* Handle a .COMPILER pseudo-op. */
6604
6605static void
6606pa_compiler (unused)
6607 int unused;
6608{
6609 obj_som_compiler (0);
6610 pa_undefine_label ();
6611}
6612
6613#endif
6614
6615/* Handle a .COPYRIGHT pseudo-op. */
6616
6617static void
6618pa_copyright (unused)
6619 int unused;
6620{
6621 obj_copyright (0);
6622 pa_undefine_label ();
6623}
6624
6625/* Just like a normal cons, but when finished we have to undefine
6626 the latest space label. */
6627
6628static void
6629pa_cons (nbytes)
6630 int nbytes;
6631{
6632 cons (nbytes);
6633 pa_undefine_label ();
6634}
6635
6636/* Switch to the data space. As usual delete our label. */
6637
6638static void
6639pa_data (unused)
6640 int unused;
6641{
49863f82 6642#ifdef OBJ_SOM
252b5132
RH		 6643 current_space = is_defined_space ("$PRIVATE$");
6644 current_subspace
6645 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
49863f82 6646#endif
252b5132
RH		 6647 s_data (0);
6648 pa_undefine_label ();
6649}
6650
6651/* Like float_cons, but we need to undefine our label. */
6652
6653static void
6654pa_float_cons (float_type)
6655 int float_type;
6656{
6657 float_cons (float_type);
6658 pa_undefine_label ();
6659}
6660
6661/* Like s_fill, but delete our label when finished. */
6662
6663static void
6664pa_fill (unused)
6665 int unused;
6666{
49863f82 6667#ifdef OBJ_SOM
252b5132
RH		 6668 /* We must have a valid space and subspace. */
6669 pa_check_current_space_and_subspace ();
49863f82 6670#endif
252b5132
RH		 6671
6672 s_fill (0);
6673 pa_undefine_label ();
6674}
6675
6676/* Like lcomm, but delete our label when finished. */
6677
6678static void
6679pa_lcomm (needs_align)
6680 int needs_align;
6681{
49863f82 6682#ifdef OBJ_SOM
252b5132
RH		 6683 /* We must have a valid space and subspace. */
6684 pa_check_current_space_and_subspace ();
49863f82 6685#endif
252b5132
RH		 6686
6687 s_lcomm (needs_align);
6688 pa_undefine_label ();
6689}
6690
6691/* Like lsym, but delete our label when finished. */
6692
6693static void
6694pa_lsym (unused)
6695 int unused;
6696{
49863f82 6697#ifdef OBJ_SOM
252b5132
RH		 6698 /* We must have a valid space and subspace. */
6699 pa_check_current_space_and_subspace ();
49863f82 6700#endif
252b5132
RH		 6701
6702 s_lsym (0);
6703 pa_undefine_label ();
6704}
6705
6706/* Switch to the text space. Like s_text, but delete our
6707 label when finished. */
6708static void
6709pa_text (unused)
6710 int unused;
6711{
49863f82 6712#ifdef OBJ_SOM
252b5132
RH		 6713 current_space = is_defined_space ("$TEXT$");
6714 current_subspace
6715 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
49863f82 6716#endif
252b5132
RH		 6717
6718 s_text (0);
6719 pa_undefine_label ();
6720}
6721
6722/* On the PA relocations which involve function symbols must not be
6723 adjusted. This so that the linker can know when/how to create argument
6724 relocation stubs for indirect calls and calls to static functions.
6725
6726 "T" field selectors create DLT relative fixups for accessing
6727 globals and statics in PIC code; each DLT relative fixup creates
6728 an entry in the DLT table. The entries contain the address of
6729 the final target (eg accessing "foo" would create a DLT entry
6730 with the address of "foo").
6731
6732 Unfortunately, the HP linker doesn't take into account any addend
6733 when generating the DLT; so accessing $LIT$+8 puts the address of
6734 $LIT$ into the DLT rather than the address of $LIT$+8.
6735
6736 The end result is we can't perform relocation symbol reductions for
6737 any fixup which creates entries in the DLT (eg they use "T" field
6738 selectors).
6739
6740 Reject reductions involving symbols with external scope; such
6741 reductions make life a living hell for object file editors.
6742
6743 FIXME. Also reject R_HPPA relocations which are 32bits wide in
6744 the code space. The SOM BFD backend doesn't know how to pull the
6745 right bits out of an instruction. */
6746
6747int
6748hppa_fix_adjustable (fixp)
6749 fixS *fixp;
6750{
6751 struct hppa_fix_struct *hppa_fix;
6752
6753 hppa_fix = (struct hppa_fix_struct *) fixp->tc_fix_data;
6754
6755#ifdef OBJ_SOM
6756 /* Reject reductions of symbols in 32bit relocs. */
6757 if (fixp->fx_r_type == R_HPPA && hppa_fix->fx_r_format == 32)
6758 return 0;
6759
6760 /* Reject reductions of symbols in sym1-sym2 expressions when
6761 the fixup will occur in a CODE subspace.
6762
6763 XXX FIXME: Long term we probably want to reject all of these;
6764 for example reducing in the debug section would lose if we ever
6765 supported using the optimizing hp linker. */
6766 if (fixp->fx_addsy
6767 && fixp->fx_subsy
6768 && (hppa_fix->segment->flags & SEC_CODE))
6769 {
6770 /* Apparently sy_used_in_reloc never gets set for sub symbols. */
398e8c25 6771 symbol_mark_used_in_reloc (fixp->fx_subsy);
252b5132
RH		 6772 return 0;
6773 }
6774
6775 /* We can't adjust any relocs that use LR% and RR% field selectors.
6776 That confuses the HP linker. */
6777 if (hppa_fix->fx_r_field == e_lrsel
6778 || hppa_fix->fx_r_field == e_rrsel
6779 || hppa_fix->fx_r_field == e_nlrsel)
6780 return 0;
6781#endif
6782
6783 /* Reject reductions of symbols in DLT relative relocs,
6784 relocations with plabels. */
6785 if (hppa_fix->fx_r_field == e_tsel
6786 || hppa_fix->fx_r_field == e_ltsel
6787 || hppa_fix->fx_r_field == e_rtsel
6788 || hppa_fix->fx_r_field == e_psel
6789 || hppa_fix->fx_r_field == e_rpsel
6790 || hppa_fix->fx_r_field == e_lpsel)
6791 return 0;
6792
a0f75b47 6793 if (fixp->fx_addsy && S_IS_EXTERNAL (fixp->fx_addsy))
252b5132
RH		 6794 return 0;
6795
6796 /* Reject absolute calls (jumps). */
6797 if (hppa_fix->fx_r_type == R_HPPA_ABS_CALL)
6798 return 0;
6799
6800 /* Reject reductions of function symbols. */
a0f75b47 6801 if (fixp->fx_addsy == 0 || ! S_IS_FUNCTION (fixp->fx_addsy))
252b5132
RH		 6802 return 1;
6803
6804 return 0;
6805}
6806
6807/* Return nonzero if the fixup in FIXP will require a relocation,
6808 even it if appears that the fixup could be completely handled
6809 within GAS. */
6810
6811int
6812hppa_force_relocation (fixp)
6813 fixS *fixp;
6814{
6815 struct hppa_fix_struct *hppa_fixp;
6816 int distance;
6817
6818 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
6819#ifdef OBJ_SOM
6820 if (fixp->fx_r_type == R_HPPA_ENTRY || fixp->fx_r_type == R_HPPA_EXIT
6821 || fixp->fx_r_type == R_HPPA_BEGIN_BRTAB
6822 || fixp->fx_r_type == R_HPPA_END_BRTAB
6823 || fixp->fx_r_type == R_HPPA_BEGIN_TRY
6824 || fixp->fx_r_type == R_HPPA_END_TRY
6825 || (fixp->fx_addsy != NULL && fixp->fx_subsy != NULL
6826 && (hppa_fixp->segment->flags & SEC_CODE) != 0))
6827 return 1;
6828#endif
6829
6830#define arg_reloc_stub_needed(CALLER, CALLEE) \
6831 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6832
49863f82 6833#ifdef OBJ_SOM
252b5132
RH		 6834 /* It is necessary to force PC-relative calls/jumps to have a relocation
6835 entry if they're going to need either a argument relocation or long
6836 call stub. FIXME. Can't we need the same for absolute calls? */
6837 if (fixp->fx_pcrel && fixp->fx_addsy
6838 && (arg_reloc_stub_needed ((long) ((obj_symbol_type *)
a0f75b47
ILT		 6839 symbol_get_bfdsym (fixp->fx_addsy))->tc_data.ap.hppa_arg_reloc,
6840 hppa_fixp->fx_arg_reloc)))
252b5132 6841 return 1;
49863f82 6842#endif
252b5132
RH		 6843 distance = (fixp->fx_offset + S_GET_VALUE (fixp->fx_addsy)
6844 - md_pcrel_from (fixp));
6845 /* Now check and see if we're going to need a long-branch stub. */
6846 if (fixp->fx_r_type == R_HPPA_PCREL_CALL
6847 && (distance > 262143 || distance < -262144))
6848 return 1;
6849
6850 if (fixp->fx_r_type == R_HPPA_ABS_CALL)
6851 return 1;
6852#undef arg_reloc_stub_needed
6853
6854 /* No need (yet) to force another relocations to be emitted. */
6855 return 0;
6856}
6857
6858/* Now for some ELF specific code. FIXME. */
6859#ifdef OBJ_ELF
6860/* Mark the end of a function so that it's possible to compute
6861 the size of the function in hppa_elf_final_processing. */
6862
6863static void
6864hppa_elf_mark_end_of_function ()
6865{
6866 /* ELF does not have EXIT relocations. All we do is create a
6867 temporary symbol marking the end of the function. */
6868 char *name = (char *)
6869 xmalloc (strlen ("L$\001end_") +
6870 strlen (S_GET_NAME (last_call_info->start_symbol)) + 1);
6871
6872 if (name)
6873 {
6874 symbolS *symbolP;
6875
6876 strcpy (name, "L$\001end_");
6877 strcat (name, S_GET_NAME (last_call_info->start_symbol));
6878
6879 /* If we have a .exit followed by a .procend, then the
6880 symbol will have already been defined. */
6881 symbolP = symbol_find (name);
6882 if (symbolP)
6883 {
6884 /* The symbol has already been defined! This can
6885 happen if we have a .exit followed by a .procend.
6886
6887 This is *not* an error. All we want to do is free
6888 the memory we just allocated for the name and continue. */
6889 xfree (name);
6890 }
6891 else
6892 {
6893 /* symbol value should be the offset of the
6894 last instruction of the function */
6895 symbolP = symbol_new (name, now_seg, (valueT) (frag_now_fix () - 4),
6896 frag_now);
6897
6898 assert (symbolP);
a0f75b47 6899 S_CLEAR_EXTERNAL (symbolP);
252b5132
RH		 6900 symbol_table_insert (symbolP);
6901 }
6902
6903 if (symbolP)
6904 last_call_info->end_symbol = symbolP;
6905 else
6906 as_bad (_("Symbol '%s' could not be created."), name);
6907
6908 }
6909 else
6910 as_bad (_("No memory for symbol name."));
6911
6912}
6913
6914/* For ELF, this function serves one purpose: to setup the st_size
6915 field of STT_FUNC symbols. To do this, we need to scan the
6916 call_info structure list, determining st_size in by taking the
6917 difference in the address of the beginning/end marker symbols. */
6918
6919void
6920elf_hppa_final_processing ()
6921{
6922 struct call_info *call_info_pointer;
6923
6924 for (call_info_pointer = call_info_root;
6925 call_info_pointer;
6926 call_info_pointer = call_info_pointer->ci_next)
6927 {
6928 elf_symbol_type *esym
a0f75b47
ILT		 6929 = ((elf_symbol_type *)
6930 symbol_get_bfdsym (call_info_pointer->start_symbol));
252b5132
RH		 6931 esym->internal_elf_sym.st_size =
6932 S_GET_VALUE (call_info_pointer->end_symbol)
6933 - S_GET_VALUE (call_info_pointer->start_symbol) + 4;
6934 }
6935}
6936#endif
GDB Binutils - Deliverables
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