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* hppa.h (pa_opcodes): Add popbts, new forms of bb, havg,
[thirdparty/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
9ecc05f0
JL		 2549 /* Handle a source FP operand format completer at 20. */
2550 case 'I':
2551 flag = pa_parse_fp_format (&s);
2552 the_insn.fpof1 = flag;
2553 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
2554
252b5132
RH		 2555 /* Handle L/R register halves like 't'. */
2556 case 'v':
2557 {
2558 struct pa_11_fp_reg_struct result;
2559
2560 pa_parse_number (&s, &result);
2561 CHECK_FIELD (result.number_part, 31, 0, 0);
2562 opcode |= result.number_part;
2563
2564 /* 0x30 opcodes are FP arithmetic operation opcodes
2565 and need to be turned into 0x38 opcodes. This
2566 is not necessary for loads/stores. */
2567 if (need_pa11_opcode (&the_insn, &result)
2568 && ((opcode & 0xfc000000) == 0x30000000))
2569 opcode |= 1 << 27;
2570
2571 INSERT_FIELD_AND_CONTINUE (opcode, result.l_r_select & 1, 6);
2572 }
2573
2574 /* Handle L/R register halves like 'b'. */
2575 case 'E':
2576 {
2577 struct pa_11_fp_reg_struct result;
2578
2579 pa_parse_number (&s, &result);
2580 CHECK_FIELD (result.number_part, 31, 0, 0);
2581 opcode |= result.number_part << 21;
2582 if (need_pa11_opcode (&the_insn, &result))
2583 {
2584 opcode |= (result.l_r_select & 1) << 7;
2585 opcode |= 1 << 27;
2586 }
2587 continue;
2588 }
2589
b53fcc20
JL		 2590 /* Float operand 1 similar to 'b' but with l/r registers. */
2591 case 'J':
2592 {
2593 struct pa_11_fp_reg_struct result;
2594
2595 pa_parse_number (&s, &result);
2596 CHECK_FIELD (result.number_part, 31, 0, 0);
2597 opcode |= result.number_part << 21;
2598 opcode |= (result.l_r_select & 1) << 7;
2599 continue;
2600 }
2601
252b5132
RH		 2602 /* Handle L/R register halves like 'b'. */
2603 case '3':
2604 {
2605 struct pa_11_fp_reg_struct result;
2606 int regnum;
2607
2608 pa_parse_number (&s, &result);
2609 CHECK_FIELD (result.number_part, 31, 0, 0);
2610 opcode |= (result.number_part & 0x1c) << 11;
2611 opcode |= (result.number_part & 0x3) << 9;
2612 opcode |= (result.l_r_select & 1) << 8;
2613 continue;
2614 }
2615
2616 /* Handle L/R register halves like 'x'. */
2617 case 'e':
2618 {
2619 struct pa_11_fp_reg_struct result;
2620
2621 pa_parse_number (&s, &result);
2622 CHECK_FIELD (result.number_part, 31, 0, 0);
2623 opcode |= (result.number_part & 0x1f) << 16;
2624 if (need_pa11_opcode (&the_insn, &result))
2625 {
2626 opcode |= (result.l_r_select & 1) << 1;
2627 }
2628 continue;
2629 }
2630
2631 /* Handle L/R register halves like 'x'. */
2632 case 'X':
2633 {
2634 struct pa_11_fp_reg_struct result;
2635
2636 pa_parse_number (&s, &result);
2637 CHECK_FIELD (result.number_part, 31, 0, 0);
2638 opcode |= (result.number_part & 0x1f) << 16;
2639 if (need_pa11_opcode (&the_insn, &result))
2640 {
2641 opcode |= (result.l_r_select & 1) << 12;
2642 opcode |= 1 << 27;
2643 }
2644 continue;
2645 }
2646
b53fcc20
JL		 2647 /* Float operand 2, like 'x' but with l/r register halves. */
2648 case 'K':
2649 {
2650 struct pa_11_fp_reg_struct result;
2651
2652 pa_parse_number (&s, &result);
2653 CHECK_FIELD (result.number_part, 31, 0, 0);
2654 opcode |= (result.number_part & 0x1f) << 16;
2655 opcode |= (result.l_r_select & 1) << 12;
2656 continue;
2657 }
2658
252b5132
RH		 2659 /* Handle a 5 bit register field at 10. */
2660 case '4':
2661 {
2662 struct pa_11_fp_reg_struct result;
2663
2664 pa_parse_number (&s, &result);
2665 CHECK_FIELD (result.number_part, 31, 0, 0);
2666 if (the_insn.fpof1 == SGL)
2667 {
2668 if (result.number_part < 16)
2669 {
2670 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2671 break;
2672 }
2673
2674 result.number_part &= 0xF;
2675 result.number_part |= (result.l_r_select & 1) << 4;
2676 }
2677 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 21);
2678 }
2679
2680 /* Handle a 5 bit register field at 15. */
2681 case '6':
2682 {
2683 struct pa_11_fp_reg_struct result;
2684
2685 pa_parse_number (&s, &result);
2686 CHECK_FIELD (result.number_part, 31, 0, 0);
2687 if (the_insn.fpof1 == SGL)
2688 {
2689 if (result.number_part < 16)
2690 {
2691 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2692 break;
2693 }
2694 result.number_part &= 0xF;
2695 result.number_part |= (result.l_r_select & 1) << 4;
2696 }
2697 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 16);
2698 }
2699
2700 /* Handle a 5 bit register field at 31. */
2701 case '7':
2702 {
2703 struct pa_11_fp_reg_struct result;
2704
2705 pa_parse_number (&s, &result);
2706 CHECK_FIELD (result.number_part, 31, 0, 0);
2707 if (the_insn.fpof1 == SGL)
2708 {
2709 if (result.number_part < 16)
2710 {
2711 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2712 break;
2713 }
2714 result.number_part &= 0xF;
2715 result.number_part |= (result.l_r_select & 1) << 4;
2716 }
2717 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 0);
2718 }
2719
2720 /* Handle a 5 bit register field at 20. */
2721 case '8':
2722 {
2723 struct pa_11_fp_reg_struct result;
2724
2725 pa_parse_number (&s, &result);
2726 CHECK_FIELD (result.number_part, 31, 0, 0);
2727 if (the_insn.fpof1 == SGL)
2728 {
2729 if (result.number_part < 16)
2730 {
2731 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2732 break;
2733 }
2734 result.number_part &= 0xF;
2735 result.number_part |= (result.l_r_select & 1) << 4;
2736 }
2737 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 11);
2738 }
2739
2740 /* Handle a 5 bit register field at 25. */
2741 case '9':
2742 {
2743 struct pa_11_fp_reg_struct result;
2744
2745 pa_parse_number (&s, &result);
2746 CHECK_FIELD (result.number_part, 31, 0, 0);
2747 if (the_insn.fpof1 == SGL)
2748 {
2749 if (result.number_part < 16)
2750 {
2751 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2752 break;
2753 }
2754 result.number_part &= 0xF;
2755 result.number_part |= (result.l_r_select & 1) << 4;
2756 }
2757 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 6);
2758 }
2759
2760 /* Handle a floating point operand format at 26.
2761 Only allows single and double precision. */
2762 case 'H':
2763 flag = pa_parse_fp_format (&s);
2764 switch (flag)
2765 {
2766 case SGL:
2767 opcode |= 0x20;
2768 case DBL:
2769 the_insn.fpof1 = flag;
2770 continue;
2771
2772 case QUAD:
2773 case ILLEGAL_FMT:
2774 default:
2775 as_bad (_("Invalid Floating Point Operand Format."));
2776 }
2777 break;
2778
2779 default:
2780 abort ();
2781 }
2782 break;
2783 }
2784
2785 failed:
2786 /* Check if the args matched. */
2787 if (match == FALSE)
2788 {
2789 if (&insn[1] - pa_opcodes < (int) NUMOPCODES
2790 && !strcmp (insn->name, insn[1].name))
2791 {
2792 ++insn;
2793 s = argstart;
2794 continue;
2795 }
2796 else
2797 {
2798 as_bad (_("Invalid operands %s"), error_message);
2799 return;
2800 }
2801 }
2802 break;
2803 }
2804
2805 the_insn.opcode = opcode;
2806}
2807
2808/* Turn a string in input_line_pointer into a floating point constant of type
2809 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2810 emitted is stored in *sizeP . An error message or NULL is returned. */
2811
2812#define MAX_LITTLENUMS 6
2813
2814char *
2815md_atof (type, litP, sizeP)
2816 char type;
2817 char *litP;
2818 int *sizeP;
2819{
2820 int prec;
2821 LITTLENUM_TYPE words[MAX_LITTLENUMS];
2822 LITTLENUM_TYPE *wordP;
2823 char *t;
2824
2825 switch (type)
2826 {
2827
2828 case 'f':
2829 case 'F':
2830 case 's':
2831 case 'S':
2832 prec = 2;
2833 break;
2834
2835 case 'd':
2836 case 'D':
2837 case 'r':
2838 case 'R':
2839 prec = 4;
2840 break;
2841
2842 case 'x':
2843 case 'X':
2844 prec = 6;
2845 break;
2846
2847 case 'p':
2848 case 'P':
2849 prec = 6;
2850 break;
2851
2852 default:
2853 *sizeP = 0;
2854 return _("Bad call to MD_ATOF()");
2855 }
2856 t = atof_ieee (input_line_pointer, type, words);
2857 if (t)
2858 input_line_pointer = t;
2859 *sizeP = prec * sizeof (LITTLENUM_TYPE);
2860 for (wordP = words; prec--;)
2861 {
2862 md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE));
2863 litP += sizeof (LITTLENUM_TYPE);
2864 }
2865 return NULL;
2866}
2867
2868/* Write out big-endian. */
2869
2870void
2871md_number_to_chars (buf, val, n)
2872 char *buf;
2873 valueT val;
2874 int n;
2875{
2876 number_to_chars_bigendian (buf, val, n);
2877}
2878
2879/* Translate internal representation of relocation info to BFD target
2880 format. */
2881
2882arelent **
2883tc_gen_reloc (section, fixp)
2884 asection *section;
2885 fixS *fixp;
2886{
2887 arelent *reloc;
2888 struct hppa_fix_struct *hppa_fixp;
2889 bfd_reloc_code_real_type code;
2890 static arelent *no_relocs = NULL;
2891 arelent **relocs;
2892 bfd_reloc_code_real_type **codes;
2893 int n_relocs;
2894 int i;
2895
2896 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
2897 if (fixp->fx_addsy == 0)
2898 return &no_relocs;
2899 assert (hppa_fixp != 0);
2900 assert (section != 0);
2901
2902 reloc = (arelent *) xmalloc (sizeof (arelent));
2903
a0f75b47
ILT		 2904 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2905 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 2906 codes = (bfd_reloc_code_real_type **) hppa_gen_reloc_type (stdoutput,
2907 fixp->fx_r_type,
2908 hppa_fixp->fx_r_format,
2909 hppa_fixp->fx_r_field,
2910 fixp->fx_subsy != NULL,
a0f75b47 2911 symbol_get_bfdsym (fixp->fx_addsy));
252b5132
RH		 2912
2913 if (codes == NULL)
2914 abort ();
2915
2916 for (n_relocs = 0; codes[n_relocs]; n_relocs++)
2917 ;
2918
2919 relocs = (arelent **) xmalloc (sizeof (arelent *) * n_relocs + 1);
2920 reloc = (arelent *) xmalloc (sizeof (arelent) * n_relocs);
2921 for (i = 0; i < n_relocs; i++)
2922 relocs[i] = &reloc[i];
2923
2924 relocs[n_relocs] = NULL;
2925
2926#ifdef OBJ_ELF
2927 switch (fixp->fx_r_type)
2928 {
2929 default:
2930 assert (n_relocs == 1);
2931
2932 code = *codes[0];
2933
a0f75b47
ILT		 2934 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2935 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 2936 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
2937 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2938 reloc->addend = 0; /* default */
2939
2940 assert (reloc->howto && code == reloc->howto->type);
2941
2942 /* Now, do any processing that is dependent on the relocation type. */
2943 switch (code)
2944 {
2945 case R_PARISC_DLTREL21L:
2946 case R_PARISC_DLTREL14R:
2947 case R_PARISC_DLTREL14F:
2948 case R_PARISC_PLABEL32:
2949 case R_PARISC_PLABEL21L:
2950 case R_PARISC_PLABEL14R:
2951 /* For plabel relocations, the addend of the
2952 relocation should be either 0 (no static link) or 2
2953 (static link required).
2954
2955 FIXME: We always assume no static link!
2956
2957 We also slam a zero addend into the DLT relative relocs;
2958 it doesn't make a lot of sense to use any addend since
2959 it gets you a different (eg unknown) DLT entry. */
2960 reloc->addend = 0;
2961 break;
2962
2963 case R_PARISC_PCREL21L:
2964 case R_PARISC_PCREL17R:
2965 case R_PARISC_PCREL17F:
2966 case R_PARISC_PCREL17C:
2967 case R_PARISC_PCREL14R:
2968 case R_PARISC_PCREL14F:
2969 /* The constant is stored in the instruction. */
2970 reloc->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
2971 break;
2972 default:
2973 reloc->addend = fixp->fx_offset;
2974 break;
2975 }
2976 break;
2977 }
2978#else /* OBJ_SOM */
2979
2980 /* Walk over reach relocation returned by the BFD backend. */
2981 for (i = 0; i < n_relocs; i++)
2982 {
2983 code = *codes[i];
2984
398e8c25
ILT		 2985 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2986 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 2987 relocs[i]->howto = bfd_reloc_type_lookup (stdoutput, code);
2988 relocs[i]->address = fixp->fx_frag->fr_address + fixp->fx_where;
2989
2990 switch (code)
2991 {
2992 case R_COMP2:
2993 /* The only time we ever use a R_COMP2 fixup is for the difference
2994 of two symbols. With that in mind we fill in all four
2995 relocs now and break out of the loop. */
2996 assert (i == 1);
993142d5 2997 relocs[0]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
252b5132
RH		 2998 relocs[0]->howto = bfd_reloc_type_lookup (stdoutput, *codes[0]);
2999 relocs[0]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3000 relocs[0]->addend = 0;
993142d5
ILT		 3001 relocs[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3002 *relocs[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 3003 relocs[1]->howto = bfd_reloc_type_lookup (stdoutput, *codes[1]);
3004 relocs[1]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3005 relocs[1]->addend = 0;
993142d5
ILT		 3006 relocs[2]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3007 *relocs[2]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy);
252b5132
RH		 3008 relocs[2]->howto = bfd_reloc_type_lookup (stdoutput, *codes[2]);
3009 relocs[2]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3010 relocs[2]->addend = 0;
993142d5 3011 relocs[3]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
252b5132
RH		 3012 relocs[3]->howto = bfd_reloc_type_lookup (stdoutput, *codes[3]);
3013 relocs[3]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3014 relocs[3]->addend = 0;
993142d5 3015 relocs[4]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
252b5132
RH		 3016 relocs[4]->howto = bfd_reloc_type_lookup (stdoutput, *codes[4]);
3017 relocs[4]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3018 relocs[4]->addend = 0;
3019 goto done;
3020 case R_PCREL_CALL:
3021 case R_ABS_CALL:
3022 relocs[i]->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
3023 break;
3024
3025 case R_DLT_REL:
3026 case R_DATA_PLABEL:
3027 case R_CODE_PLABEL:
3028 /* For plabel relocations, the addend of the
3029 relocation should be either 0 (no static link) or 2
3030 (static link required).
3031
3032 FIXME: We always assume no static link!
3033
3034 We also slam a zero addend into the DLT relative relocs;
3035 it doesn't make a lot of sense to use any addend since
3036 it gets you a different (eg unknown) DLT entry. */
3037 relocs[i]->addend = 0;
3038 break;
3039
3040 case R_N_MODE:
3041 case R_S_MODE:
3042 case R_D_MODE:
3043 case R_R_MODE:
3044 case R_FSEL:
3045 case R_LSEL:
3046 case R_RSEL:
3047 case R_BEGIN_BRTAB:
3048 case R_END_BRTAB:
3049 case R_BEGIN_TRY:
3050 case R_N0SEL:
3051 case R_N1SEL:
3052 /* There is no symbol or addend associated with these fixups. */
993142d5
ILT		 3053 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3054 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
252b5132
RH		 3055 relocs[i]->addend = 0;
3056 break;
3057
3058 case R_END_TRY:
3059 case R_ENTRY:
3060 case R_EXIT:
3061 /* There is no symbol associated with these fixups. */
993142d5
ILT		 3062 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3063 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
252b5132
RH		 3064 relocs[i]->addend = fixp->fx_offset;
3065 break;
3066
3067 default:
3068 relocs[i]->addend = fixp->fx_offset;
3069 }
3070 }
3071
3072 done:
3073#endif
3074
3075 return relocs;
3076}
3077
3078/* Process any machine dependent frag types. */
3079
3080void
3081md_convert_frag (abfd, sec, fragP)
3082 register bfd *abfd;
3083 register asection *sec;
3084 register fragS *fragP;
3085{
3086 unsigned int address;
3087
3088 if (fragP->fr_type == rs_machine_dependent)
3089 {
3090 switch ((int) fragP->fr_subtype)
3091 {
3092 case 0:
3093 fragP->fr_type = rs_fill;
3094 know (fragP->fr_var == 1);
3095 know (fragP->fr_next);
3096 address = fragP->fr_address + fragP->fr_fix;
3097 if (address % fragP->fr_offset)
3098 {
3099 fragP->fr_offset =
3100 fragP->fr_next->fr_address
3101 - fragP->fr_address
3102 - fragP->fr_fix;
3103 }
3104 else
3105 fragP->fr_offset = 0;
3106 break;
3107 }
3108 }
3109}
3110
3111/* Round up a section size to the appropriate boundary. */
3112
3113valueT
3114md_section_align (segment, size)
3115 asection *segment;
3116 valueT size;
3117{
3118 int align = bfd_get_section_alignment (stdoutput, segment);
3119 int align2 = (1 << align) - 1;
3120
3121 return (size + align2) & ~align2;
3122}
3123
3124/* Return the approximate size of a frag before relaxation has occurred. */
3125int
3126md_estimate_size_before_relax (fragP, segment)
3127 register fragS *fragP;
3128 asection *segment;
3129{
3130 int size;
3131
3132 size = 0;
3133
3134 while ((fragP->fr_fix + size) % fragP->fr_offset)
3135 size++;
3136
3137 return size;
3138}
3139\f
3140CONST char *md_shortopts = "";
3141struct option md_longopts[] = {
3142 {NULL, no_argument, NULL, 0}
3143};
3144size_t md_longopts_size = sizeof(md_longopts);
3145
3146int
3147md_parse_option (c, arg)
3148 int c;
3149 char *arg;
3150{
3151 return 0;
3152}
3153
3154void
3155md_show_usage (stream)
3156 FILE *stream;
3157{
3158}
3159\f
3160/* We have no need to default values of symbols. */
3161
3162symbolS *
3163md_undefined_symbol (name)
3164 char *name;
3165{
3166 return 0;
3167}
3168
3169/* Apply a fixup to an instruction. */
3170
3171int
3172md_apply_fix (fixP, valp)
3173 fixS *fixP;
3174 valueT *valp;
3175{
3176 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
3177 struct hppa_fix_struct *hppa_fixP;
3178 long new_val, result = 0;
3179 unsigned int w1, w2, w, resulti;
3180
3181 hppa_fixP = (struct hppa_fix_struct *) fixP->tc_fix_data;
3182 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3183 never be "applied" (they are just markers). Likewise for
3184 R_HPPA_BEGIN_BRTAB and R_HPPA_END_BRTAB. */
3185#ifdef OBJ_SOM
3186 if (fixP->fx_r_type == R_HPPA_ENTRY
3187 || fixP->fx_r_type == R_HPPA_EXIT
3188 || fixP->fx_r_type == R_HPPA_BEGIN_BRTAB
3189 || fixP->fx_r_type == R_HPPA_END_BRTAB
3190 || fixP->fx_r_type == R_HPPA_BEGIN_TRY)
3191 return 1;
3192
3193 /* Disgusting. We must set fx_offset ourselves -- R_HPPA_END_TRY
3194 fixups are considered not adjustable, which in turn causes
3195 adjust_reloc_syms to not set fx_offset. Ugh. */
3196 if (fixP->fx_r_type == R_HPPA_END_TRY)
3197 {
3198 fixP->fx_offset = *valp;
3199 return 1;
3200 }
3201#endif
3202
3203 /* There should have been an HPPA specific fixup associated
3204 with the GAS fixup. */
3205 if (hppa_fixP)
3206 {
3207 unsigned long buf_wd = bfd_get_32 (stdoutput, buf);
3208 unsigned char fmt = bfd_hppa_insn2fmt (buf_wd);
3209
3210 /* If there is a symbol associated with this fixup, then it's something
3211 which will need a SOM relocation (except for some PC-relative relocs).
3212 In such cases we should treat the "val" or "addend" as zero since it
3213 will be added in as needed from fx_offset in tc_gen_reloc. */
3214 if ((fixP->fx_addsy != NULL
3215 || fixP->fx_r_type == R_HPPA_NONE)
3216#ifdef OBJ_SOM
3217 && fmt != 32
3218#endif
3219 )
90700a53 3220 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
252b5132
RH		 3221#ifdef OBJ_SOM
3222 /* These field selectors imply that we do not want an addend. */
3223 else if (hppa_fixP->fx_r_field == e_psel
3224 || hppa_fixP->fx_r_field == e_rpsel
3225 || hppa_fixP->fx_r_field == e_lpsel
3226 || hppa_fixP->fx_r_field == e_tsel
3227 || hppa_fixP->fx_r_field == e_rtsel
3228 || hppa_fixP->fx_r_field == e_ltsel)
90700a53 3229 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
252b5132
RH		 3230 /* This is truely disgusting. The machine independent code blindly
3231 adds in the value of the symbol being relocated against. Damn! */
3232 else if (fmt == 32
3233 && fixP->fx_addsy != NULL
3234 && S_GET_SEGMENT (fixP->fx_addsy) != bfd_com_section_ptr)
3235 new_val = hppa_field_adjust (*valp - S_GET_VALUE (fixP->fx_addsy),
3236 0, hppa_fixP->fx_r_field);
3237#endif
3238 else
3239 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3240
3241 /* Handle pc-relative exceptions from above. */
3242#define arg_reloc_stub_needed(CALLER, CALLEE) \
3243 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
90700a53 3244 if ((fmt == 12 || fmt == 17 || fmt == 22)
252b5132
RH		 3245 && fixP->fx_addsy
3246 && fixP->fx_pcrel
49863f82 3247#ifdef OBJ_SOM
252b5132 3248 && !arg_reloc_stub_needed ((long) ((obj_symbol_type *)
a0f75b47
ILT		 3249 symbol_get_bfdsym (fixP->fx_addsy))->tc_data.ap.hppa_arg_reloc,
3250 hppa_fixP->fx_arg_reloc)
49863f82 3251#endif
90700a53 3252 && (((int)(*valp) > -262144 && (int)(*valp) < 262143) && fmt != 22)
252b5132
RH		 3253 && S_GET_SEGMENT (fixP->fx_addsy) == hppa_fixP->segment
3254 && !(fixP->fx_subsy
3255 && S_GET_SEGMENT (fixP->fx_subsy) != hppa_fixP->segment))
3256
3257 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3258#undef arg_reloc_stub_needed
3259
3260 switch (fmt)
3261 {
3262 /* Handle all opcodes with the 'j' operand type. */
3263 case 14:
3264 CHECK_FIELD (new_val, 8191, -8192, 0);
3265
3266 /* Mask off 14 bits to be changed. */
3267 bfd_put_32 (stdoutput,
3268 bfd_get_32 (stdoutput, buf) & 0xffffc000,
3269 buf);
3270 low_sign_unext (new_val, 14, &resulti);
3271 result = resulti;
3272 break;
3273
3274 /* Handle all opcodes with the 'k' operand type. */
3275 case 21:
3276 CHECK_FIELD (new_val, 2097152, 0, 0);
3277
3278 /* Mask off 21 bits to be changed. */
3279 bfd_put_32 (stdoutput,
3280 bfd_get_32 (stdoutput, buf) & 0xffe00000,
3281 buf);
3282 dis_assemble_21 (new_val, &resulti);
3283 result = resulti;
3284 break;
3285
3286 /* Handle all the opcodes with the 'i' operand type. */
3287 case 11:
3288 CHECK_FIELD (new_val, 1023, -1023, 0);
3289
3290 /* Mask off 11 bits to be changed. */
3291 bfd_put_32 (stdoutput,
3292 bfd_get_32 (stdoutput, buf) & 0xffff800,
3293 buf);
3294 low_sign_unext (new_val, 11, &resulti);
3295 result = resulti;
3296 break;
3297
3298 /* Handle all the opcodes with the 'w' operand type. */
3299 case 12:
3300 CHECK_FIELD (new_val, 8199, -8184, 0);
3301
3302 /* Mask off 11 bits to be changed. */
3303 sign_unext ((new_val - 8) >> 2, 12, &resulti);
3304 bfd_put_32 (stdoutput,
3305 bfd_get_32 (stdoutput, buf) & 0xffffe002,
3306 buf);
3307
3308 dis_assemble_12 (resulti, &w1, &w);
3309 result = ((w1 << 2) | w);
3310 break;
3311
3312 /* Handle some of the opcodes with the 'W' operand type. */
3313 case 17:
3314 {
3315 int distance = *valp;
3316
3317 CHECK_FIELD (new_val, 262143, -262144, 0);
3318
3319 /* If this is an absolute branch (ie no link) with an out of
3320 range target, then we want to complain. */
3321 if (fixP->fx_r_type == R_HPPA_PCREL_CALL
3322 && (distance > 262143 || distance < -262144)
3323 && (bfd_get_32 (stdoutput, buf) & 0xffe00000) == 0xe8000000)
3324 CHECK_FIELD (distance, 262143, -262144, 0);
3325
3326 /* Mask off 17 bits to be changed. */
3327 bfd_put_32 (stdoutput,
3328 bfd_get_32 (stdoutput, buf) & 0xffe0e002,
3329 buf);
3330 sign_unext ((new_val - 8) >> 2, 17, &resulti);
3331 dis_assemble_17 (resulti, &w1, &w2, &w);
3332 result = ((w2 << 2) | (w1 << 16) | w);
3333 break;
3334 }
3335
3336 case 32:
3337 result = 0;
3338 bfd_put_32 (stdoutput, new_val, buf);
3339 break;
3340
3341 default:
3342 as_bad (_("Unknown relocation encountered in md_apply_fix."));
3343 return 0;
3344 }
3345
3346 /* Insert the relocation. */
3347 bfd_put_32 (stdoutput, bfd_get_32 (stdoutput, buf) | result, buf);
3348 return 1;
3349 }
3350 else
3351 {
3352 printf (_("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n"),
3353 (unsigned int) fixP, fixP->fx_r_type);
3354 return 0;
3355 }
3356}
3357
3358/* Exactly what point is a PC-relative offset relative TO?
3359 On the PA, they're relative to the address of the offset. */
3360
3361long
3362md_pcrel_from (fixP)
3363 fixS *fixP;
3364{
3365 return fixP->fx_where + fixP->fx_frag->fr_address;
3366}
3367
3368/* Return nonzero if the input line pointer is at the end of
3369 a statement. */
3370
3371static int
3372is_end_of_statement ()
3373{
3374 return ((*input_line_pointer == '\n')
3375 || (*input_line_pointer == ';')
3376 || (*input_line_pointer == '!'));
3377}
3378
3379/* Read a number from S. The number might come in one of many forms,
3380 the most common will be a hex or decimal constant, but it could be
3381 a pre-defined register (Yuk!), or an absolute symbol.
3382
3383 Return a number or -1 for failure.
3384
3385 When parsing PA-89 FP register numbers RESULT will be
3386 the address of a structure to return information about
3387 L/R half of FP registers, store results there as appropriate.
3388
3389 pa_parse_number can not handle negative constants and will fail
3390 horribly if it is passed such a constant. */
3391
3392static int
3393pa_parse_number (s, result)
3394 char **s;
3395 struct pa_11_fp_reg_struct *result;
3396{
3397 int num;
3398 char *name;
3399 char c;
3400 symbolS *sym;
3401 int status;
3402 char *p = *s;
3403
3404 /* Skip whitespace before the number. */
3405 while (*p == ' ' || *p == '\t')
3406 p = p + 1;
3407
3408 /* Store info in RESULT if requested by caller. */
3409 if (result)
3410 {
3411 result->number_part = -1;
3412 result->l_r_select = -1;
3413 }
3414 num = -1;
3415
3416 if (isdigit (*p))
3417 {
3418 /* Looks like a number. */
3419 num = 0;
3420
3421 if (*p == '0' && (*(p + 1) == 'x' || *(p + 1) == 'X'))
3422 {
3423 /* The number is specified in hex. */
3424 p += 2;
3425 while (isdigit (*p) || ((*p >= 'a') && (*p <= 'f'))
3426 || ((*p >= 'A') && (*p <= 'F')))
3427 {
3428 if (isdigit (*p))
3429 num = num * 16 + *p - '0';
3430 else if (*p >= 'a' && *p <= 'f')
3431 num = num * 16 + *p - 'a' + 10;
3432 else
3433 num = num * 16 + *p - 'A' + 10;
3434 ++p;
3435 }
3436 }
3437 else
3438 {
3439 /* The number is specified in decimal. */
3440 while (isdigit (*p))
3441 {
3442 num = num * 10 + *p - '0';
3443 ++p;
3444 }
3445 }
3446
3447 /* Store info in RESULT if requested by the caller. */
3448 if (result)
3449 {
3450 result->number_part = num;
3451
3452 if (IS_R_SELECT (p))
3453 {
3454 result->l_r_select = 1;
3455 ++p;
3456 }
3457 else if (IS_L_SELECT (p))
3458 {
3459 result->l_r_select = 0;
3460 ++p;
3461 }
3462 else
3463 result->l_r_select = 0;
3464 }
3465 }
3466 else if (*p == '%')
3467 {
3468 /* The number might be a predefined register. */
3469 num = 0;
3470 name = p;
3471 p++;
3472 c = *p;
3473 /* Tege hack: Special case for general registers as the general
3474 code makes a binary search with case translation, and is VERY
3475 slow. */
3476 if (c == 'r')
3477 {
3478 p++;
3479 if (*p == 'e' && *(p + 1) == 't'
3480 && (*(p + 2) == '0' || *(p + 2) == '1'))
3481 {
3482 p += 2;
3483 num = *p - '0' + 28;
3484 p++;
3485 }
3486 else if (*p == 'p')
3487 {
3488 num = 2;
3489 p++;
3490 }
3491 else if (!isdigit (*p))
3492 {
3493 if (print_errors)
3494 as_bad (_("Undefined register: '%s'."), name);
3495 num = -1;
3496 }
3497 else
3498 {
3499 do
3500 num = num * 10 + *p++ - '0';
3501 while (isdigit (*p));
3502 }
3503 }
3504 else
3505 {
3506 /* Do a normal register search. */
3507 while (is_part_of_name (c))
3508 {
3509 p = p + 1;
3510 c = *p;
3511 }
3512 *p = 0;
3513 status = reg_name_search (name);
3514 if (status >= 0)
3515 num = status;
3516 else
3517 {
3518 if (print_errors)
3519 as_bad (_("Undefined register: '%s'."), name);
3520 num = -1;
3521 }
3522 *p = c;
3523 }
3524
3525 /* Store info in RESULT if requested by caller. */
3526 if (result)
3527 {
3528 result->number_part = num;
3529 if (IS_R_SELECT (p - 1))
3530 result->l_r_select = 1;
3531 else if (IS_L_SELECT (p - 1))
3532 result->l_r_select = 0;
3533 else
3534 result->l_r_select = 0;
3535 }
3536 }
3537 else
3538 {
3539 /* And finally, it could be a symbol in the absolute section which
3540 is effectively a constant. */
3541 num = 0;
3542 name = p;
3543 c = *p;
3544 while (is_part_of_name (c))
3545 {
3546 p = p + 1;
3547 c = *p;
3548 }
3549 *p = 0;
3550 if ((sym = symbol_find (name)) != NULL)
3551 {
3552 if (S_GET_SEGMENT (sym) == &bfd_abs_section)
3553 num = S_GET_VALUE (sym);
3554 else
3555 {
3556 if (print_errors)
3557 as_bad (_("Non-absolute symbol: '%s'."), name);
3558 num = -1;
3559 }
3560 }
3561 else
3562 {
3563 /* There is where we'd come for an undefined symbol
3564 or for an empty string. For an empty string we
3565 will return zero. That's a concession made for
3566 compatability with the braindamaged HP assemblers. */
3567 if (*name == 0)
3568 num = 0;
3569 else
3570 {
3571 if (print_errors)
3572 as_bad (_("Undefined absolute constant: '%s'."), name);
3573 num = -1;
3574 }
3575 }
3576 *p = c;
3577
3578 /* Store info in RESULT if requested by caller. */
3579 if (result)
3580 {
3581 result->number_part = num;
3582 if (IS_R_SELECT (p - 1))
3583 result->l_r_select = 1;
3584 else if (IS_L_SELECT (p - 1))
3585 result->l_r_select = 0;
3586 else
3587 result->l_r_select = 0;
3588 }
3589 }
3590
3591 *s = p;
3592 return num;
3593}
3594
3595#define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3596
3597/* Given NAME, find the register number associated with that name, return
3598 the integer value associated with the given name or -1 on failure. */
3599
3600static int
3601reg_name_search (name)
3602 char *name;
3603{
3604 int middle, low, high;
3605 int cmp;
3606
3607 low = 0;
3608 high = REG_NAME_CNT - 1;
3609
3610 do
3611 {
3612 middle = (low + high) / 2;
3613 cmp = strcasecmp (name, pre_defined_registers[middle].name);
3614 if (cmp < 0)
3615 high = middle - 1;
3616 else if (cmp > 0)
3617 low = middle + 1;
3618 else
3619 return pre_defined_registers[middle].value;
3620 }
3621 while (low <= high);
3622
3623 return -1;
3624}
3625
3626
3627/* Return nonzero if the given INSN and L/R information will require
3628 a new PA-1.1 opcode. */
3629
3630static int
3631need_pa11_opcode (insn, result)
3632 struct pa_it *insn;
3633 struct pa_11_fp_reg_struct *result;
3634{
3635 if (result->l_r_select == 1 && !(insn->fpof1 == DBL && insn->fpof2 == DBL))
3636 {
3637 /* If this instruction is specific to a particular architecture,
3638 then set a new architecture. */
3639 if (bfd_get_mach (stdoutput) < pa11)
3640 {
3641 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, pa11))
3642 as_warn (_("could not update architecture and machine"));
3643 }
3644 return TRUE;
3645 }
3646 else
3647 return FALSE;
3648}
3649
3650/* Parse a condition for a fcmp instruction. Return the numerical
3651 code associated with the condition. */
3652
3653static int
3654pa_parse_fp_cmp_cond (s)
3655 char **s;
3656{
3657 int cond, i;
3658
3659 cond = 0;
3660
3661 for (i = 0; i < 32; i++)
3662 {
3663 if (strncasecmp (*s, fp_cond_map[i].string,
3664 strlen (fp_cond_map[i].string)) == 0)
3665 {
3666 cond = fp_cond_map[i].cond;
3667 *s += strlen (fp_cond_map[i].string);
3668 /* If not a complete match, back up the input string and
3669 report an error. */
3670 if (**s != ' ' && **s != '\t')
3671 {
3672 *s -= strlen (fp_cond_map[i].string);
3673 break;
3674 }
3675 while (**s == ' ' || **s == '\t')
3676 *s = *s + 1;
3677 return cond;
3678 }
3679 }
3680
3681 as_bad (_("Invalid FP Compare Condition: %s"), *s);
3682
3683 /* Advance over the bogus completer. */
3684 while (**s != ',' && **s != ' ' && **s != '\t')
3685 *s += 1;
3686
3687 return 0;
3688}
3689
3690
3691/* Parse an FP operand format completer returning the completer
3692 type. */
3693
3694static fp_operand_format
3695pa_parse_fp_format (s)
3696 char **s;
3697{
3698 int format;
3699
3700 format = SGL;
3701 if (**s == ',')
3702 {
3703 *s += 1;
3704 if (strncasecmp (*s, "sgl", 3) == 0)
3705 {
3706 format = SGL;
3707 *s += 4;
3708 }
3709 else if (strncasecmp (*s, "dbl", 3) == 0)
3710 {
3711 format = DBL;
3712 *s += 4;
3713 }
3714 else if (strncasecmp (*s, "quad", 4) == 0)
3715 {
3716 format = QUAD;
3717 *s += 5;
3718 }
3719 else
3720 {
3721 format = ILLEGAL_FMT;
3722 as_bad (_("Invalid FP Operand Format: %3s"), *s);
3723 }
3724 }
3725
3726 return format;
3727}
3728
3729/* Convert from a selector string into a selector type. */
3730
3731static int
3732pa_chk_field_selector (str)
3733 char **str;
3734{
3735 int middle, low, high;
3736 int cmp;
3737 char name[4];
3738
3739 /* Read past any whitespace. */
3740 /* FIXME: should we read past newlines and formfeeds??? */
3741 while (**str == ' ' || **str == '\t' || **str == '\n' || **str == '\f')
3742 *str = *str + 1;
3743
3744 if ((*str)[1] == '\'' || (*str)[1] == '%')
3745 name[0] = tolower ((*str)[0]),
3746 name[1] = 0;
3747 else if ((*str)[2] == '\'' || (*str)[2] == '%')
3748 name[0] = tolower ((*str)[0]),
3749 name[1] = tolower ((*str)[1]),
3750 name[2] = 0;
252b5132
RH		 3751 else if ((*str)[3] == '\'' || (*str)[3] == '%')
3752 name[0] = tolower ((*str)[0]),
3753 name[1] = tolower ((*str)[1]),
3754 name[2] = tolower ((*str)[2]),
3755 name[3] = 0;
252b5132
RH		 3756 else
3757 return e_fsel;
3758
3759 low = 0;
3760 high = sizeof (selector_table) / sizeof (struct selector_entry) - 1;
3761
3762 do
3763 {
3764 middle = (low + high) / 2;
3765 cmp = strcmp (name, selector_table[middle].prefix);
3766 if (cmp < 0)
3767 high = middle - 1;
3768 else if (cmp > 0)
3769 low = middle + 1;
3770 else
3771 {
3772 *str += strlen (name) + 1;
3773#ifndef OBJ_SOM
3774 if (selector_table[middle].field_selector == e_nsel)
3775 return e_fsel;
3776#endif
3777 return selector_table[middle].field_selector;
3778 }
3779 }
3780 while (low <= high);
3781
3782 return e_fsel;
3783}
3784
3785/* Mark (via expr_end) the end of an expression (I think). FIXME. */
3786
3787static int
3788get_expression (str)
3789 char *str;
3790{
3791 char *save_in;
3792 asection *seg;
3793
3794 save_in = input_line_pointer;
3795 input_line_pointer = str;
3796 seg = expression (&the_insn.exp);
3797 if (!(seg == absolute_section
3798 || seg == undefined_section
3799 || SEG_NORMAL (seg)))
3800 {
3801 as_warn (_("Bad segment in expression."));
3802 expr_end = input_line_pointer;
3803 input_line_pointer = save_in;
3804 return 1;
3805 }
3806 expr_end = input_line_pointer;
3807 input_line_pointer = save_in;
3808 return 0;
3809}
3810
3811/* Mark (via expr_end) the end of an absolute expression. FIXME. */
3812static int
3813pa_get_absolute_expression (insn, strp)
3814 struct pa_it *insn;
3815 char **strp;
3816{
3817 char *save_in;
3818
3819 insn->field_selector = pa_chk_field_selector (strp);
3820 save_in = input_line_pointer;
3821 input_line_pointer = *strp;
3822 expression (&insn->exp);
3823 /* This is not perfect, but is a huge improvement over doing nothing.
3824
3825 The PA assembly syntax is ambigious in a variety of ways. Consider
3826 this string "4 %r5" Is that the number 4 followed by the register
3827 r5, or is that 4 MOD 5?
3828
3829 If we get a modulo expresion When looking for an absolute, we try
3830 again cutting off the input string at the first whitespace character. */
3831 if (insn->exp.X_op == O_modulus)
3832 {
3833 char *s, c;
3834 int retval;
3835
3836 input_line_pointer = *strp;
3837 s = *strp;
3838 while (*s != ',' && *s != ' ' && *s != '\t')
3839 s++;
3840
3841 c = *s;
3842 *s = 0;
3843
3844 retval = pa_get_absolute_expression (insn, strp);
3845
3846 input_line_pointer = save_in;
3847 *s = c;
3848 return evaluate_absolute (insn);
3849 }
3850 if (insn->exp.X_op != O_constant)
3851 {
3852 as_bad (_("Bad segment (should be absolute)."));
3853 expr_end = input_line_pointer;
3854 input_line_pointer = save_in;
3855 return 0;
3856 }
3857 expr_end = input_line_pointer;
3858 input_line_pointer = save_in;
3859 return evaluate_absolute (insn);
3860}
3861
3862/* Evaluate an absolute expression EXP which may be modified by
3863 the selector FIELD_SELECTOR. Return the value of the expression. */
3864static int
3865evaluate_absolute (insn)
3866 struct pa_it *insn;
3867{
3868 int value;
3869 expressionS exp;
3870 int field_selector = insn->field_selector;
3871
3872 exp = insn->exp;
3873 value = exp.X_add_number;
3874
3875 switch (field_selector)
3876 {
3877 /* No change. */
3878 case e_fsel:
3879 break;
3880
3881 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3882 case e_lssel:
3883 if (value & 0x00000400)
3884 value += 0x800;
3885 value = (value & 0xfffff800) >> 11;
3886 break;
3887
3888 /* Sign extend from bit 21. */
3889 case e_rssel:
3890 if (value & 0x00000400)
3891 value |= 0xfffff800;
3892 else
3893 value &= 0x7ff;
3894 break;
3895
3896 /* Arithmetic shift right 11 bits. */
3897 case e_lsel:
3898 value = (value & 0xfffff800) >> 11;
3899 break;
3900
3901 /* Set bits 0-20 to zero. */
3902 case e_rsel:
3903 value = value & 0x7ff;
3904 break;
3905
3906 /* Add 0x800 and arithmetic shift right 11 bits. */
3907 case e_ldsel:
3908 value += 0x800;
3909 value = (value & 0xfffff800) >> 11;
3910 break;
3911
3912 /* Set bitgs 0-21 to one. */
3913 case e_rdsel:
3914 value |= 0xfffff800;
3915 break;
3916
3917#define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3918 case e_rrsel:
3919 value = (RSEL_ROUND (value) & 0x7ff) + (value - RSEL_ROUND (value));
3920 break;
3921
3922 case e_lrsel:
3923 value = (RSEL_ROUND (value) >> 11) & 0x1fffff;
3924 break;
3925#undef RSEL_ROUND
3926
3927 default:
3928 BAD_CASE (field_selector);
3929 break;
3930 }
3931 return value;
3932}
3933
3934/* Given an argument location specification return the associated
3935 argument location number. */
3936
3937static unsigned int
3938pa_build_arg_reloc (type_name)
3939 char *type_name;
3940{
3941
3942 if (strncasecmp (type_name, "no", 2) == 0)
3943 return 0;
3944 if (strncasecmp (type_name, "gr", 2) == 0)
3945 return 1;
3946 else if (strncasecmp (type_name, "fr", 2) == 0)
3947 return 2;
3948 else if (strncasecmp (type_name, "fu", 2) == 0)
3949 return 3;
3950 else
3951 as_bad (_("Invalid argument location: %s\n"), type_name);
3952
3953 return 0;
3954}
3955
3956/* Encode and return an argument relocation specification for
3957 the given register in the location specified by arg_reloc. */
3958
3959static unsigned int
3960pa_align_arg_reloc (reg, arg_reloc)
3961 unsigned int reg;
3962 unsigned int arg_reloc;
3963{
3964 unsigned int new_reloc;
3965
3966 new_reloc = arg_reloc;
3967 switch (reg)
3968 {
3969 case 0:
3970 new_reloc <<= 8;
3971 break;
3972 case 1:
3973 new_reloc <<= 6;
3974 break;
3975 case 2:
3976 new_reloc <<= 4;
3977 break;
3978 case 3:
3979 new_reloc <<= 2;
3980 break;
3981 default:
3982 as_bad (_("Invalid argument description: %d"), reg);
3983 }
3984
3985 return new_reloc;
3986}
3987
3988/* Parse a PA nullification completer (,n). Return nonzero if the
3989 completer was found; return zero if no completer was found. */
3990
3991static int
3992pa_parse_nullif (s)
3993 char **s;
3994{
3995 int nullif;
3996
3997 nullif = 0;
3998 if (**s == ',')
3999 {
4000 *s = *s + 1;
4001 if (strncasecmp (*s, "n", 1) == 0)
4002 nullif = 1;
4003 else
4004 {
4005 as_bad (_("Invalid Nullification: (%c)"), **s);
4006 nullif = 0;
4007 }
4008 *s = *s + 1;
4009 }
4010
4011 return nullif;
4012}
4013
4014/* Parse a non-negated compare/subtract completer returning the
4015 number (for encoding in instrutions) of the given completer.
4016
4017 ISBRANCH specifies whether or not this is parsing a condition
4018 completer for a branch (vs a nullification completer for a
4019 computational instruction. */
4020
4021static int
4022pa_parse_nonneg_cmpsub_cmpltr (s, isbranch)
4023 char **s;
4024 int isbranch;
4025{
4026 int cmpltr;
4027 char *name = *s + 1;
4028 char c;
4029 char *save_s = *s;
4030 int nullify = 0;
4031
4032 cmpltr = 0;
4033 if (**s == ',')
4034 {
4035 *s += 1;
4036 while (**s != ',' && **s != ' ' && **s != '\t')
4037 *s += 1;
4038 c = **s;
4039 **s = 0x00;
4040
4041
4042 if (strcmp (name, "=") == 0)
4043 {
4044 cmpltr = 1;
4045 }
4046 else if (strcmp (name, "<") == 0)
4047 {
4048 cmpltr = 2;
4049 }
4050 else if (strcmp (name, "<=") == 0)
4051 {
4052 cmpltr = 3;
4053 }
4054 else if (strcmp (name, "<<") == 0)
4055 {
4056 cmpltr = 4;
4057 }
4058 else if (strcmp (name, "<<=") == 0)
4059 {
4060 cmpltr = 5;
4061 }
4062 else if (strcasecmp (name, "sv") == 0)
4063 {
4064 cmpltr = 6;
4065 }
4066 else if (strcasecmp (name, "od") == 0)
4067 {
4068 cmpltr = 7;
4069 }
4070 /* If we have something like addb,n then there is no condition
4071 completer. */
4072 else if (strcasecmp (name, "n") == 0 && isbranch)
4073 {
4074 cmpltr = 0;
4075 nullify = 1;
4076 }
4077 else
4078 {
4079 cmpltr = -1;
4080 }
4081 **s = c;
4082 }
4083
4084 /* Reset pointers if this was really a ,n for a branch instruction. */
4085 if (nullify)
4086 *s = save_s;
4087
4088
4089 return cmpltr;
4090}
4091
4092/* Parse a negated compare/subtract completer returning the
4093 number (for encoding in instrutions) of the given completer.
4094
4095 ISBRANCH specifies whether or not this is parsing a condition
4096 completer for a branch (vs a nullification completer for a
4097 computational instruction. */
4098
4099static int
4100pa_parse_neg_cmpsub_cmpltr (s, isbranch)
4101 char **s;
4102 int isbranch;
4103{
4104 int cmpltr;
4105 char *name = *s + 1;
4106 char c;
4107 char *save_s = *s;
4108 int nullify = 0;
4109
4110 cmpltr = 0;
4111 if (**s == ',')
4112 {
4113 *s += 1;
4114 while (**s != ',' && **s != ' ' && **s != '\t')
4115 *s += 1;
4116 c = **s;
4117 **s = 0x00;
4118
4119
4120 if (strcasecmp (name, "tr") == 0)
4121 {
4122 cmpltr = 0;
4123 }
4124 else if (strcmp (name, "<>") == 0)
4125 {
4126 cmpltr = 1;
4127 }
4128 else if (strcmp (name, ">=") == 0)
4129 {
4130 cmpltr = 2;
4131 }
4132 else if (strcmp (name, ">") == 0)
4133 {
4134 cmpltr = 3;
4135 }
4136 else if (strcmp (name, ">>=") == 0)
4137 {
4138 cmpltr = 4;
4139 }
4140 else if (strcmp (name, ">>") == 0)
4141 {
4142 cmpltr = 5;
4143 }
4144 else if (strcasecmp (name, "nsv") == 0)
4145 {
4146 cmpltr = 6;
4147 }
4148 else if (strcasecmp (name, "ev") == 0)
4149 {
4150 cmpltr = 7;
4151 }
4152 /* If we have something like addb,n then there is no condition
4153 completer. */
4154 else if (strcasecmp (name, "n") == 0 && isbranch)
4155 {
4156 cmpltr = 0;
4157 nullify = 1;
4158 }
4159 else
4160 {
4161 cmpltr = -1;
4162 }
4163 **s = c;
4164 }
4165
4166 /* Reset pointers if this was really a ,n for a branch instruction. */
4167 if (nullify)
4168 *s = save_s;
4169
4170
4171 return cmpltr;
4172}
4173
4174
4175/* Parse a non-negated addition completer returning the number
4176 (for encoding in instrutions) of the given completer.
4177
4178 ISBRANCH specifies whether or not this is parsing a condition
4179 completer for a branch (vs a nullification completer for a
4180 computational instruction. */
4181
4182static int
4183pa_parse_nonneg_add_cmpltr (s, isbranch)
4184 char **s;
4185 int isbranch;
4186{
4187 int cmpltr;
4188 char *name = *s + 1;
4189 char c;
4190 char *save_s = *s;
4191
4192 cmpltr = 0;
4193 if (**s == ',')
4194 {
4195 *s += 1;
4196 while (**s != ',' && **s != ' ' && **s != '\t')
4197 *s += 1;
4198 c = **s;
4199 **s = 0x00;
4200 if (strcmp (name, "=") == 0)
4201 {
4202 cmpltr = 1;
4203 }
4204 else if (strcmp (name, "<") == 0)
4205 {
4206 cmpltr = 2;
4207 }
4208 else if (strcmp (name, "<=") == 0)
4209 {
4210 cmpltr = 3;
4211 }
4212 else if (strcasecmp (name, "nuv") == 0)
4213 {
4214 cmpltr = 4;
4215 }
4216 else if (strcasecmp (name, "znv") == 0)
4217 {
4218 cmpltr = 5;
4219 }
4220 else if (strcasecmp (name, "sv") == 0)
4221 {
4222 cmpltr = 6;
4223 }
4224 else if (strcasecmp (name, "od") == 0)
4225 {
4226 cmpltr = 7;
4227 }
4228 /* If we have something like addb,n then there is no condition
4229 completer. */
4230 else if (strcasecmp (name, "n") == 0 && isbranch)
4231 {
4232 cmpltr = 0;
4233 }
4234 else
4235 {
4236 cmpltr = -1;
4237 }
4238 **s = c;
4239 }
4240
4241 /* Reset pointers if this was really a ,n for a branch instruction. */
4242 if (cmpltr == 0 && *name == 'n' && isbranch)
4243 *s = save_s;
4244
4245 return cmpltr;
4246}
4247
4248/* Parse a negated addition completer returning the number
4249 (for encoding in instrutions) of the given completer.
4250
4251 ISBRANCH specifies whether or not this is parsing a condition
4252 completer for a branch (vs a nullification completer for a
4253 computational instruction). */
4254
4255static int
4256pa_parse_neg_add_cmpltr (s, isbranch)
4257 char **s;
4258 int isbranch;
4259{
4260 int cmpltr;
4261 char *name = *s + 1;
4262 char c;
4263 char *save_s = *s;
4264
4265 cmpltr = 0;
4266 if (**s == ',')
4267 {
4268 *s += 1;
4269 while (**s != ',' && **s != ' ' && **s != '\t')
4270 *s += 1;
4271 c = **s;
4272 **s = 0x00;
4273 if (strcasecmp (name, "tr") == 0)
4274 {
4275 cmpltr = 0;
4276 }
4277 else if (strcmp (name, "<>") == 0)
4278 {
4279 cmpltr = 1;
4280 }
4281 else if (strcmp (name, ">=") == 0)
4282 {
4283 cmpltr = 2;
4284 }
4285 else if (strcmp (name, ">") == 0)
4286 {
4287 cmpltr = 3;
4288 }
4289 else if (strcasecmp (name, "uv") == 0)
4290 {
4291 cmpltr = 4;
4292 }
4293 else if (strcasecmp (name, "vnz") == 0)
4294 {
4295 cmpltr = 5;
4296 }
4297 else if (strcasecmp (name, "nsv") == 0)
4298 {
4299 cmpltr = 6;
4300 }
4301 else if (strcasecmp (name, "ev") == 0)
4302 {
4303 cmpltr = 7;
4304 }
4305 /* If we have something like addb,n then there is no condition
4306 completer. */
4307 else if (strcasecmp (name, "n") == 0 && isbranch)
4308 {
4309 cmpltr = 0;
4310 }
4311 else
4312 {
4313 cmpltr = -1;
4314 }
4315 **s = c;
4316 }
4317
4318 /* Reset pointers if this was really a ,n for a branch instruction. */
4319 if (cmpltr == 0 && *name == 'n' && isbranch)
4320 *s = save_s;
4321
4322 return cmpltr;
4323}
4324
49863f82 4325#ifdef OBJ_SOM
252b5132
RH		 4326/* Handle an alignment directive. Special so that we can update the
4327 alignment of the subspace if necessary. */
4328static void
4329pa_align (bytes)
4330{
4331 /* We must have a valid space and subspace. */
4332 pa_check_current_space_and_subspace ();
4333
4334 /* Let the generic gas code do most of the work. */
4335 s_align_bytes (bytes);
4336
4337 /* If bytes is a power of 2, then update the current subspace's
4338 alignment if necessary. */
4339 if (log2 (bytes) != -1)
4340 record_alignment (current_subspace->ssd_seg, log2 (bytes));
4341}
49863f82 4342#endif
252b5132
RH		 4343
4344/* Handle a .BLOCK type pseudo-op. */
4345
4346static void
4347pa_block (z)
4348 int z;
4349{
4350 char *p;
4351 long int temp_fill;
4352 unsigned int temp_size;
4353 unsigned int i;
4354
49863f82 4355#ifdef OBJ_SOM
252b5132
RH		 4356 /* We must have a valid space and subspace. */
4357 pa_check_current_space_and_subspace ();
49863f82 4358#endif
252b5132
RH		 4359
4360 temp_size = get_absolute_expression ();
4361
4362 /* Always fill with zeros, that's what the HP assembler does. */
4363 temp_fill = 0;
4364
4365 p = frag_var (rs_fill, (int) temp_size, (int) temp_size,
4366 (relax_substateT) 0, (symbolS *) 0, (offsetT) 1, NULL);
4367 memset (p, 0, temp_size);
4368
4369 /* Convert 2 bytes at a time. */
4370
4371 for (i = 0; i < temp_size; i += 2)
4372 {
4373 md_number_to_chars (p + i,
4374 (valueT) temp_fill,
4375 (int) ((temp_size - i) > 2 ? 2 : (temp_size - i)));
4376 }
4377
4378 pa_undefine_label ();
4379 demand_empty_rest_of_line ();
4380}
4381
4382/* Handle a .begin_brtab and .end_brtab pseudo-op. */
4383
4384static void
4385pa_brtab (begin)
4386 int begin;
4387{
4388
4389#ifdef OBJ_SOM
4390 /* The BRTAB relocations are only availble in SOM (to denote
4391 the beginning and end of branch tables). */
4392 char *where = frag_more (0);
4393
4394 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4395 NULL, (offsetT) 0, NULL,
4396 0, begin ? R_HPPA_BEGIN_BRTAB : R_HPPA_END_BRTAB,
4397 e_fsel, 0, 0, NULL);
4398#endif
4399
4400 demand_empty_rest_of_line ();
4401}
4402
4403/* Handle a .begin_try and .end_try pseudo-op. */
4404
4405static void
4406pa_try (begin)
4407 int begin;
4408{
4409#ifdef OBJ_SOM
4410 expressionS exp;
4411 char *where = frag_more (0);
4412
4413 if (! begin)
4414 expression (&exp);
4415
4416 /* The TRY relocations are only availble in SOM (to denote
4417 the beginning and end of exception handling regions). */
4418
4419 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4420 NULL, (offsetT) 0, begin ? NULL : &exp,
4421 0, begin ? R_HPPA_BEGIN_TRY : R_HPPA_END_TRY,
4422 e_fsel, 0, 0, NULL);
4423#endif
4424
4425 demand_empty_rest_of_line ();
4426}
4427
4428/* Handle a .CALL pseudo-op. This involves storing away information
4429 about where arguments are to be found so the linker can detect
4430 (and correct) argument location mismatches between caller and callee. */
4431
4432static void
4433pa_call (unused)
4434 int unused;
4435{
49863f82 4436#ifdef OBJ_SOM
252b5132
RH		 4437 /* We must have a valid space and subspace. */
4438 pa_check_current_space_and_subspace ();
49863f82 4439#endif
252b5132
RH		 4440
4441 pa_call_args (&last_call_desc);
4442 demand_empty_rest_of_line ();
4443}
4444
4445/* Do the dirty work of building a call descriptor which describes
4446 where the caller placed arguments to a function call. */
4447
4448static void
4449pa_call_args (call_desc)
4450 struct call_desc *call_desc;
4451{
4452 char *name, c, *p;
4453 unsigned int temp, arg_reloc;
4454
4455 while (!is_end_of_statement ())
4456 {
4457 name = input_line_pointer;
4458 c = get_symbol_end ();
4459 /* Process a source argument. */
4460 if ((strncasecmp (name, "argw", 4) == 0))
4461 {
4462 temp = atoi (name + 4);
4463 p = input_line_pointer;
4464 *p = c;
4465 input_line_pointer++;
4466 name = input_line_pointer;
4467 c = get_symbol_end ();
4468 arg_reloc = pa_build_arg_reloc (name);
4469 call_desc->arg_reloc |= pa_align_arg_reloc (temp, arg_reloc);
4470 }
4471 /* Process a return value. */
4472 else if ((strncasecmp (name, "rtnval", 6) == 0))
4473 {
4474 p = input_line_pointer;
4475 *p = c;
4476 input_line_pointer++;
4477 name = input_line_pointer;
4478 c = get_symbol_end ();
4479 arg_reloc = pa_build_arg_reloc (name);
4480 call_desc->arg_reloc |= (arg_reloc & 0x3);
4481 }
4482 else
4483 {
4484 as_bad (_("Invalid .CALL argument: %s"), name);
4485 }
4486 p = input_line_pointer;
4487 *p = c;
4488 if (!is_end_of_statement ())
4489 input_line_pointer++;
4490 }
4491}
4492
4493/* Return TRUE if FRAG1 and FRAG2 are the same. */
4494
4495static int
4496is_same_frag (frag1, frag2)
4497 fragS *frag1;
4498 fragS *frag2;
4499{
4500
4501 if (frag1 == NULL)
4502 return (FALSE);
4503 else if (frag2 == NULL)
4504 return (FALSE);
4505 else if (frag1 == frag2)
4506 return (TRUE);
4507 else if (frag2->fr_type == rs_fill && frag2->fr_fix == 0)
4508 return (is_same_frag (frag1, frag2->fr_next));
4509 else
4510 return (FALSE);
4511}
4512
4513#ifdef OBJ_ELF
4514/* Build an entry in the UNWIND subspace from the given function
4515 attributes in CALL_INFO. This is not needed for SOM as using
4516 R_ENTRY and R_EXIT relocations allow the linker to handle building
4517 of the unwind spaces. */
4518
4519static void
4520pa_build_unwind_subspace (call_info)
4521 struct call_info *call_info;
4522{
4523 char *unwind;
4524 asection *seg, *save_seg;
46031ca9 4525 asymbol *sym;
252b5132 4526 subsegT subseg, save_subseg;
46031ca9 4527 int i, reloc;
252b5132
RH		 4528 char c, *p;
4529
9100134c
JL		 4530 if (bfd_get_arch_info (stdoutput)->bits_per_address == 32)
4531 reloc = R_PARISC_DIR32;
46031ca9 4532 else
9100134c 4533 reloc = R_PARISC_SEGREL32;
46031ca9 4534
252b5132
RH		 4535 /* Get into the right seg/subseg. This may involve creating
4536 the seg the first time through. Make sure to have the
4537 old seg/subseg so that we can reset things when we are done. */
252b5132
RH		 4538 seg = bfd_get_section_by_name (stdoutput, UNWIND_SECTION_NAME);
4539 if (seg == ASEC_NULL)
4540 {
4541 seg = bfd_make_section_old_way (stdoutput, UNWIND_SECTION_NAME);
4542 bfd_set_section_flags (stdoutput, seg,
4543 SEC_READONLY | SEC_HAS_CONTENTS
b100be66
JL		 4544 | SEC_LOAD | SEC_RELOC | SEC_ALLOC | SEC_DATA);
4545 bfd_set_section_alignment (stdoutput, seg, 2);
252b5132
RH		 4546 }
4547
4548 save_seg = now_seg;
4549 save_subseg = now_subseg;
46031ca9 4550 subseg_set (seg, 0);
252b5132
RH		 4551
4552
4553 /* Get some space to hold relocation information for the unwind
4554 descriptor. */
4555 p = frag_more (4);
4556 md_number_to_chars (p, 0, 4);
4557
4558 /* Relocation info. for start offset of the function. */
4559 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
4560 call_info->start_symbol, (offsetT) 0,
46031ca9
JL		 4561 (expressionS *) NULL, 0, reloc,
4562 e_fsel, 32, 0, NULL);
252b5132
RH		 4563
4564 p = frag_more (4);
4565 md_number_to_chars (p, 0, 4);
4566
4567 /* Relocation info. for end offset of the function.
4568
4569 Because we allow reductions of 32bit relocations for ELF, this will be
4570 reduced to section_sym + offset which avoids putting the temporary
4571 symbol into the symbol table. It (should) end up giving the same
4572 value as call_info->start_symbol + function size once the linker is
4573 finished with its work. */
4574
4575 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
4576 call_info->end_symbol, (offsetT) 0,
46031ca9
JL		 4577 (expressionS *) NULL, 0, reloc,
4578 e_fsel, 32, 0, NULL);
252b5132
RH		 4579
4580 /* Dump it. */
4581 unwind = (char *) &call_info->ci_unwind;
4582 for (i = 8; i < sizeof (struct unwind_table); i++)
4583 {
4584 c = *(unwind + i);
4585 {
4586 FRAG_APPEND_1_CHAR (c);
4587 }
4588 }
4589
4590 /* Return back to the original segment/subsegment. */
4591 subseg_set (save_seg, save_subseg);
4592}
4593#endif
4594
4595/* Process a .CALLINFO pseudo-op. This information is used later
4596 to build unwind descriptors and maybe one day to support
4597 .ENTER and .LEAVE. */
4598
4599static void
4600pa_callinfo (unused)
4601 int unused;
4602{
4603 char *name, c, *p;
4604 int temp;
4605
49863f82 4606#ifdef OBJ_SOM
252b5132
RH		 4607 /* We must have a valid space and subspace. */
4608 pa_check_current_space_and_subspace ();
49863f82 4609#endif
252b5132
RH		 4610
4611 /* .CALLINFO must appear within a procedure definition. */
4612 if (!within_procedure)
4613 as_bad (_(".callinfo is not within a procedure definition"));
4614
4615 /* Mark the fact that we found the .CALLINFO for the
4616 current procedure. */
4617 callinfo_found = TRUE;
4618
4619 /* Iterate over the .CALLINFO arguments. */
4620 while (!is_end_of_statement ())
4621 {
4622 name = input_line_pointer;
4623 c = get_symbol_end ();
4624 /* Frame size specification. */
4625 if ((strncasecmp (name, "frame", 5) == 0))
4626 {
4627 p = input_line_pointer;
4628 *p = c;
4629 input_line_pointer++;
4630 temp = get_absolute_expression ();
4631 if ((temp & 0x3) != 0)
4632 {
4633 as_bad (_("FRAME parameter must be a multiple of 8: %d\n"), temp);
4634 temp = 0;
4635 }
4636
4637 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4638 last_call_info->ci_unwind.descriptor.frame_size = temp / 8;
4639
4640 }
4641 /* Entry register (GR, GR and SR) specifications. */
4642 else if ((strncasecmp (name, "entry_gr", 8) == 0))
4643 {
4644 p = input_line_pointer;
4645 *p = c;
4646 input_line_pointer++;
4647 temp = get_absolute_expression ();
4648 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4649 even though %r19 is caller saved. I think this is a bug in
4650 the HP assembler, and we are not going to emulate it. */
4651 if (temp < 3 || temp > 18)
4652 as_bad (_("Value for ENTRY_GR must be in the range 3..18\n"));
4653 last_call_info->ci_unwind.descriptor.entry_gr = temp - 2;
4654 }
4655 else if ((strncasecmp (name, "entry_fr", 8) == 0))
4656 {
4657 p = input_line_pointer;
4658 *p = c;
4659 input_line_pointer++;
4660 temp = get_absolute_expression ();
4661 /* Similarly the HP assembler takes 31 as the high bound even
4662 though %fr21 is the last callee saved floating point register. */
4663 if (temp < 12 || temp > 21)
4664 as_bad (_("Value for ENTRY_FR must be in the range 12..21\n"));
4665 last_call_info->ci_unwind.descriptor.entry_fr = temp - 11;
4666 }
4667 else if ((strncasecmp (name, "entry_sr", 8) == 0))
4668 {
4669 p = input_line_pointer;
4670 *p = c;
4671 input_line_pointer++;
4672 temp = get_absolute_expression ();
4673 if (temp != 3)
4674 as_bad (_("Value for ENTRY_SR must be 3\n"));
4675 }
4676 /* Note whether or not this function performs any calls. */
4677 else if ((strncasecmp (name, "calls", 5) == 0) ||
4678 (strncasecmp (name, "caller", 6) == 0))
4679 {
4680 p = input_line_pointer;
4681 *p = c;
4682 }
4683 else if ((strncasecmp (name, "no_calls", 8) == 0))
4684 {
4685 p = input_line_pointer;
4686 *p = c;
4687 }
4688 /* Should RP be saved into the stack. */
4689 else if ((strncasecmp (name, "save_rp", 7) == 0))
4690 {
4691 p = input_line_pointer;
4692 *p = c;
4693 last_call_info->ci_unwind.descriptor.save_rp = 1;
4694 }
4695 /* Likewise for SP. */
4696 else if ((strncasecmp (name, "save_sp", 7) == 0))
4697 {
4698 p = input_line_pointer;
4699 *p = c;
4700 last_call_info->ci_unwind.descriptor.save_sp = 1;
4701 }
4702 /* Is this an unwindable procedure. If so mark it so
4703 in the unwind descriptor. */
4704 else if ((strncasecmp (name, "no_unwind", 9) == 0))
4705 {
4706 p = input_line_pointer;
4707 *p = c;
4708 last_call_info->ci_unwind.descriptor.cannot_unwind = 1;
4709 }
4710 /* Is this an interrupt routine. If so mark it in the
4711 unwind descriptor. */
4712 else if ((strncasecmp (name, "hpux_int", 7) == 0))
4713 {
4714 p = input_line_pointer;
4715 *p = c;
4716 last_call_info->ci_unwind.descriptor.hpux_interrupt_marker = 1;
4717 }
4718 /* Is this a millicode routine. "millicode" isn't in my
4719 assembler manual, but my copy is old. The HP assembler
4720 accepts it, and there's a place in the unwind descriptor
4721 to drop the information, so we'll accept it too. */
4722 else if ((strncasecmp (name, "millicode", 9) == 0))
4723 {
4724 p = input_line_pointer;
4725 *p = c;
4726 last_call_info->ci_unwind.descriptor.millicode = 1;
4727 }
4728 else
4729 {
4730 as_bad (_("Invalid .CALLINFO argument: %s"), name);
4731 *input_line_pointer = c;
4732 }
4733 if (!is_end_of_statement ())
4734 input_line_pointer++;
4735 }
4736
4737 demand_empty_rest_of_line ();
4738}
4739
4740/* Switch into the code subspace. */
4741
4742static void
4743pa_code (unused)
4744 int unused;
4745{
49863f82 4746#ifdef OBJ_SOM
252b5132
RH		 4747 current_space = is_defined_space ("$TEXT$");
4748 current_subspace
4749 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
49863f82 4750#endif
252b5132
RH		 4751 s_text (0);
4752 pa_undefine_label ();
4753}
4754
4755/* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4756 the .comm pseudo-op has the following symtax:
4757
4758 <label> .comm <length>
4759
4760 where <label> is optional and is a symbol whose address will be the start of
4761 a block of memory <length> bytes long. <length> must be an absolute
4762 expression. <length> bytes will be allocated in the current space
4763 and subspace.
4764
4765 Also note the label may not even be on the same line as the .comm.
4766
4767 This difference in syntax means the colon function will be called
4768 on the symbol before we arrive in pa_comm. colon will set a number
4769 of attributes of the symbol that need to be fixed here. In particular
4770 the value, section pointer, fragment pointer, flags, etc. What
4771 a pain.
4772
4773 This also makes error detection all but impossible. */
4774
4775static void
4776pa_comm (unused)
4777 int unused;
4778{
4779 unsigned int size;
4780 symbolS *symbol;
4781 label_symbol_struct *label_symbol = pa_get_label ();
4782
4783 if (label_symbol)
4784 symbol = label_symbol->lss_label;
4785 else
4786 symbol = NULL;
4787
4788 SKIP_WHITESPACE ();
4789 size = get_absolute_expression ();
4790
4791 if (symbol)
4792 {
4793 S_SET_VALUE (symbol, size);
4794 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
4795 S_SET_EXTERNAL (symbol);
4796
4797 /* colon() has already set the frag to the current location in the
4798 current subspace; we need to reset the fragment to the zero address
4799 fragment. We also need to reset the segment pointer. */
a0f75b47 4800 symbol_set_frag (symbol, &zero_address_frag);
252b5132
RH		 4801 }
4802 demand_empty_rest_of_line ();
4803}
4804
4805/* Process a .END pseudo-op. */
4806
4807static void
4808pa_end (unused)
4809 int unused;
4810{
4811 demand_empty_rest_of_line ();
4812}
4813
4814/* Process a .ENTER pseudo-op. This is not supported. */
4815static void
4816pa_enter (unused)
4817 int unused;
4818{
49863f82 4819#ifdef OBJ_SOM
252b5132
RH		 4820 /* We must have a valid space and subspace. */
4821 pa_check_current_space_and_subspace ();
49863f82 4822#endif
252b5132
RH		 4823
4824 as_bad (_("The .ENTER pseudo-op is not supported"));
4825 demand_empty_rest_of_line ();
4826}
4827
4828/* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4829 procesure. */
4830static void
4831pa_entry (unused)
4832 int unused;
4833{
49863f82 4834#ifdef OBJ_SOM
252b5132
RH		 4835 /* We must have a valid space and subspace. */
4836 pa_check_current_space_and_subspace ();
49863f82 4837#endif
252b5132
RH		 4838
4839 if (!within_procedure)
4840 as_bad (_("Misplaced .entry. Ignored."));
4841 else
4842 {
4843 if (!callinfo_found)
4844 as_bad (_("Missing .callinfo."));
4845 }
4846 demand_empty_rest_of_line ();
4847 within_entry_exit = TRUE;
4848
4849#ifdef OBJ_SOM
4850 /* SOM defers building of unwind descriptors until the link phase.
4851 The assembler is responsible for creating an R_ENTRY relocation
4852 to mark the beginning of a region and hold the unwind bits, and
4853 for creating an R_EXIT relocation to mark the end of the region.
4854
4855 FIXME. ELF should be using the same conventions! The problem
4856 is an unwind requires too much relocation space. Hmmm. Maybe
4857 if we split the unwind bits up between the relocations which
4858 denote the entry and exit points. */
4859 if (last_call_info->start_symbol != NULL)
4860 {
4861 char *where = frag_more (0);
4862
4863 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4864 NULL, (offsetT) 0, NULL,
4865 0, R_HPPA_ENTRY, e_fsel, 0, 0,
4866 (int *) &last_call_info->ci_unwind.descriptor);
4867 }
4868#endif
4869}
4870
4871/* Handle a .EQU pseudo-op. */
4872
4873static void
4874pa_equ (reg)
4875 int reg;
4876{
4877 label_symbol_struct *label_symbol = pa_get_label ();
4878 symbolS *symbol;
4879
4880 if (label_symbol)
4881 {
4882 symbol = label_symbol->lss_label;
4883 if (reg)
4884 S_SET_VALUE (symbol, pa_parse_number (&input_line_pointer, 0));
4885 else
4886 S_SET_VALUE (symbol, (unsigned int) get_absolute_expression ());
4887 S_SET_SEGMENT (symbol, bfd_abs_section_ptr);
4888 }
4889 else
4890 {
4891 if (reg)
4892 as_bad (_(".REG must use a label"));
4893 else
4894 as_bad (_(".EQU must use a label"));
4895 }
4896
4897 pa_undefine_label ();
4898 demand_empty_rest_of_line ();
4899}
4900
4901/* Helper function. Does processing for the end of a function. This
4902 usually involves creating some relocations or building special
4903 symbols to mark the end of the function. */
4904
4905static void
4906process_exit ()
4907{
4908 char *where;
4909
4910 where = frag_more (0);
4911
4912#ifdef OBJ_ELF
4913 /* Mark the end of the function, stuff away the location of the frag
4914 for the end of the function, and finally call pa_build_unwind_subspace
4915 to add an entry in the unwind table. */
4916 hppa_elf_mark_end_of_function ();
4917 pa_build_unwind_subspace (last_call_info);
4918#else
4919 /* SOM defers building of unwind descriptors until the link phase.
4920 The assembler is responsible for creating an R_ENTRY relocation
4921 to mark the beginning of a region and hold the unwind bits, and
4922 for creating an R_EXIT relocation to mark the end of the region.
4923
4924 FIXME. ELF should be using the same conventions! The problem
4925 is an unwind requires too much relocation space. Hmmm. Maybe
4926 if we split the unwind bits up between the relocations which
4927 denote the entry and exit points. */
4928 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4929 NULL, (offsetT) 0,
4930 NULL, 0, R_HPPA_EXIT, e_fsel, 0, 0,
4931 (int *) &last_call_info->ci_unwind.descriptor + 1);
4932#endif
4933}
4934
4935/* Process a .EXIT pseudo-op. */
4936
4937static void
4938pa_exit (unused)
4939 int unused;
4940{
49863f82 4941#ifdef OBJ_SOM
252b5132
RH		 4942 /* We must have a valid space and subspace. */
4943 pa_check_current_space_and_subspace ();
49863f82 4944#endif
252b5132
RH		 4945
4946 if (!within_procedure)
4947 as_bad (_(".EXIT must appear within a procedure"));
4948 else
4949 {
4950 if (!callinfo_found)
4951 as_bad (_("Missing .callinfo"));
4952 else
4953 {
4954 if (!within_entry_exit)
4955 as_bad (_("No .ENTRY for this .EXIT"));
4956 else
4957 {
4958 within_entry_exit = FALSE;
4959 process_exit ();
4960 }
4961 }
4962 }
4963 demand_empty_rest_of_line ();
4964}
4965
4966/* Process a .EXPORT directive. This makes functions external
4967 and provides information such as argument relocation entries
4968 to callers. */
4969
4970static void
4971pa_export (unused)
4972 int unused;
4973{
4974 char *name, c, *p;
4975 symbolS *symbol;
4976
4977 name = input_line_pointer;
4978 c = get_symbol_end ();
4979 /* Make sure the given symbol exists. */
4980 if ((symbol = symbol_find_or_make (name)) == NULL)
4981 {
4982 as_bad (_("Cannot define export symbol: %s\n"), name);
4983 p = input_line_pointer;
4984 *p = c;
4985 input_line_pointer++;
4986 }
4987 else
4988 {
4989 /* OK. Set the external bits and process argument relocations. */
4990 S_SET_EXTERNAL (symbol);
4991 p = input_line_pointer;
4992 *p = c;
4993 if (!is_end_of_statement ())
4994 {
4995 input_line_pointer++;
4996 pa_type_args (symbol, 1);
4997 }
4998 }
4999
5000 demand_empty_rest_of_line ();
5001}
5002
5003/* Helper function to process arguments to a .EXPORT pseudo-op. */
5004
5005static void
5006pa_type_args (symbolP, is_export)
5007 symbolS *symbolP;
5008 int is_export;
5009{
5010 char *name, c, *p;
5011 unsigned int temp, arg_reloc;
5012 pa_symbol_type type = SYMBOL_TYPE_UNKNOWN;
a0f75b47 5013 obj_symbol_type *symbol = (obj_symbol_type *) symbol_get_bfdsym (symbolP);
252b5132
RH		 5014
5015 if (strncasecmp (input_line_pointer, "absolute", 8) == 0)
5016
5017 {
5018 input_line_pointer += 8;
a0f75b47 5019 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5020 S_SET_SEGMENT (symbolP, bfd_abs_section_ptr);
5021 type = SYMBOL_TYPE_ABSOLUTE;
5022 }
5023 else if (strncasecmp (input_line_pointer, "code", 4) == 0)
5024 {
5025 input_line_pointer += 4;
5026 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
5027 instead one should be IMPORTing/EXPORTing ENTRY types.
5028
5029 Complain if one tries to EXPORT a CODE type since that's never
5030 done. Both GCC and HP C still try to IMPORT CODE types, so
5031 silently fix them to be ENTRY types. */
a0f75b47 5032 if (S_IS_FUNCTION (symbolP))
252b5132
RH		 5033 {
5034 if (is_export)
a0f75b47
ILT		 5035 as_tsktsk (_("Using ENTRY rather than CODE in export directive for %s"),
5036 S_GET_NAME (symbolP));
252b5132 5037
a0f75b47 5038 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5039 type = SYMBOL_TYPE_ENTRY;
5040 }
5041 else
5042 {
a0f75b47 5043 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5044 type = SYMBOL_TYPE_CODE;
5045 }
5046 }
5047 else if (strncasecmp (input_line_pointer, "data", 4) == 0)
5048 {
5049 input_line_pointer += 4;
a0f75b47 5050 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5051 type = SYMBOL_TYPE_DATA;
5052 }
5053 else if ((strncasecmp (input_line_pointer, "entry", 5) == 0))
5054 {
5055 input_line_pointer += 5;
a0f75b47 5056 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5057 type = SYMBOL_TYPE_ENTRY;
5058 }
5059 else if (strncasecmp (input_line_pointer, "millicode", 9) == 0)
5060 {
5061 input_line_pointer += 9;
a0f75b47 5062 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5063 type = SYMBOL_TYPE_MILLICODE;
5064 }
5065 else if (strncasecmp (input_line_pointer, "plabel", 6) == 0)
5066 {
5067 input_line_pointer += 6;
a0f75b47 5068 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5069 type = SYMBOL_TYPE_PLABEL;
5070 }
5071 else if (strncasecmp (input_line_pointer, "pri_prog", 8) == 0)
5072 {
5073 input_line_pointer += 8;
a0f75b47 5074 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5075 type = SYMBOL_TYPE_PRI_PROG;
5076 }
5077 else if (strncasecmp (input_line_pointer, "sec_prog", 8) == 0)
5078 {
5079 input_line_pointer += 8;
a0f75b47 5080 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5081 type = SYMBOL_TYPE_SEC_PROG;
5082 }
5083
5084 /* SOM requires much more information about symbol types
5085 than BFD understands. This is how we get this information
5086 to the SOM BFD backend. */
5087#ifdef obj_set_symbol_type
a0f75b47 5088 obj_set_symbol_type (symbol_get_bfdsym (symbolP), (int) type);
252b5132
RH		 5089#endif
5090
5091 /* Now that the type of the exported symbol has been handled,
5092 handle any argument relocation information. */
5093 while (!is_end_of_statement ())
5094 {
5095 if (*input_line_pointer == ',')
5096 input_line_pointer++;
5097 name = input_line_pointer;
5098 c = get_symbol_end ();
5099 /* Argument sources. */
5100 if ((strncasecmp (name, "argw", 4) == 0))
5101 {
5102 p = input_line_pointer;
5103 *p = c;
5104 input_line_pointer++;
5105 temp = atoi (name + 4);
5106 name = input_line_pointer;
5107 c = get_symbol_end ();
5108 arg_reloc = pa_align_arg_reloc (temp, pa_build_arg_reloc (name));
49863f82 5109#ifdef OBJ_SOM
252b5132 5110 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
49863f82 5111#endif
252b5132
RH		 5112 *input_line_pointer = c;
5113 }
5114 /* The return value. */
5115 else if ((strncasecmp (name, "rtnval", 6)) == 0)
5116 {
5117 p = input_line_pointer;
5118 *p = c;
5119 input_line_pointer++;
5120 name = input_line_pointer;
5121 c = get_symbol_end ();
5122 arg_reloc = pa_build_arg_reloc (name);
49863f82 5123#ifdef OBJ_SOM
252b5132 5124 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
49863f82 5125#endif
252b5132
RH		 5126 *input_line_pointer = c;
5127 }
5128 /* Privelege level. */
5129 else if ((strncasecmp (name, "priv_lev", 8)) == 0)
5130 {
5131 p = input_line_pointer;
5132 *p = c;
5133 input_line_pointer++;
5134 temp = atoi (input_line_pointer);
49863f82 5135#ifdef OBJ_SOM
252b5132 5136 symbol->tc_data.ap.hppa_priv_level = temp;
49863f82 5137#endif
252b5132
RH		 5138 c = get_symbol_end ();
5139 *input_line_pointer = c;
5140 }
5141 else
5142 {
5143 as_bad (_("Undefined .EXPORT/.IMPORT argument (ignored): %s"), name);
5144 p = input_line_pointer;
5145 *p = c;
5146 }
5147 if (!is_end_of_statement ())
5148 input_line_pointer++;
5149 }
5150}
5151
5152/* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
5153 assembly file must either be defined in the assembly file, or
5154 explicitly IMPORTED from another. */
5155
5156static void
5157pa_import (unused)
5158 int unused;
5159{
5160 char *name, c, *p;
5161 symbolS *symbol;
5162
5163 name = input_line_pointer;
5164 c = get_symbol_end ();
5165
5166 symbol = symbol_find (name);
5167 /* Ugh. We might be importing a symbol defined earlier in the file,
5168 in which case all the code below will really screw things up
5169 (set the wrong segment, symbol flags & type, etc). */
5170 if (symbol == NULL || !S_IS_DEFINED (symbol))
5171 {
5172 symbol = symbol_find_or_make (name);
5173 p = input_line_pointer;
5174 *p = c;
5175
5176 if (!is_end_of_statement ())
5177 {
5178 input_line_pointer++;
5179 pa_type_args (symbol, 0);
5180 }
5181 else
5182 {
5183 /* Sigh. To be compatable with the HP assembler and to help
5184 poorly written assembly code, we assign a type based on
5185 the the current segment. Note only BSF_FUNCTION really
5186 matters, we do not need to set the full SYMBOL_TYPE_* info. */
5187 if (now_seg == text_section)
a0f75b47 5188 symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION;
252b5132
RH		 5189
5190 /* If the section is undefined, then the symbol is undefined
5191 Since this is an import, leave the section undefined. */
5192 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
5193 }
5194 }
5195 else
5196 {
5197 /* The symbol was already defined. Just eat everything up to
5198 the end of the current statement. */
5199 while (!is_end_of_statement ())
5200 input_line_pointer++;
5201 }
5202
5203 demand_empty_rest_of_line ();
5204}
5205
5206/* Handle a .LABEL pseudo-op. */
5207
5208static void
5209pa_label (unused)
5210 int unused;
5211{
5212 char *name, c, *p;
5213
5214 name = input_line_pointer;
5215 c = get_symbol_end ();
5216
5217 if (strlen (name) > 0)
5218 {
5219 colon (name);
5220 p = input_line_pointer;
5221 *p = c;
5222 }
5223 else
5224 {
5225 as_warn (_("Missing label name on .LABEL"));
5226 }
5227
5228 if (!is_end_of_statement ())
5229 {
5230 as_warn (_("extra .LABEL arguments ignored."));
5231 ignore_rest_of_line ();
5232 }
5233 demand_empty_rest_of_line ();
5234}
5235
5236/* Handle a .LEAVE pseudo-op. This is not supported yet. */
5237
5238static void
5239pa_leave (unused)
5240 int unused;
5241{
49863f82 5242#ifdef OBJ_SOM
252b5132
RH		 5243 /* We must have a valid space and subspace. */
5244 pa_check_current_space_and_subspace ();
49863f82 5245#endif
252b5132
RH		 5246
5247 as_bad (_("The .LEAVE pseudo-op is not supported"));
5248 demand_empty_rest_of_line ();
5249}
5250
5251/* Handle a .LEVEL pseudo-op. */
5252
5253static void
5254pa_level (unused)
5255 int unused;
5256{
5257 char *level;
5258
5259 level = input_line_pointer;
5260 if (strncmp (level, "1.0", 3) == 0)
5261 {
5262 input_line_pointer += 3;
5263 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10))
5264 as_warn (_("could not set architecture and machine"));
5265 }
5266 else if (strncmp (level, "1.1", 3) == 0)
5267 {
5268 input_line_pointer += 3;
5269 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 11))
5270 as_warn (_("could not set architecture and machine"));
5271 }
46031ca9
JL		 5272 else if (strncmp (level, "2.0w", 4) == 0)
5273 {
5274 input_line_pointer += 4;
5275 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 25))
5276 as_warn (_("could not set architecture and machine"));
5277 }
252b5132
RH		 5278 else if (strncmp (level, "2.0", 3) == 0)
5279 {
5280 input_line_pointer += 3;
5281 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 20))
5282 as_warn (_("could not set architecture and machine"));
5283 }
5284 else
5285 {
5286 as_bad (_("Unrecognized .LEVEL argument\n"));
5287 ignore_rest_of_line ();
5288 }
5289 demand_empty_rest_of_line ();
5290}
5291
5292/* Handle a .ORIGIN pseudo-op. */
5293
5294static void
5295pa_origin (unused)
5296 int unused;
5297{
49863f82 5298#ifdef OBJ_SOM
252b5132
RH		 5299 /* We must have a valid space and subspace. */
5300 pa_check_current_space_and_subspace ();
49863f82 5301#endif
252b5132
RH		 5302
5303 s_org (0);
5304 pa_undefine_label ();
5305}
5306
5307/* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
5308 is for static functions. FIXME. Should share more code with .EXPORT. */
5309
5310static void
5311pa_param (unused)
5312 int unused;
5313{
5314 char *name, c, *p;
5315 symbolS *symbol;
5316
5317 name = input_line_pointer;
5318 c = get_symbol_end ();
5319
5320 if ((symbol = symbol_find_or_make (name)) == NULL)
5321 {
5322 as_bad (_("Cannot define static symbol: %s\n"), name);
5323 p = input_line_pointer;
5324 *p = c;
5325 input_line_pointer++;
5326 }
5327 else
5328 {
5329 S_CLEAR_EXTERNAL (symbol);
5330 p = input_line_pointer;
5331 *p = c;
5332 if (!is_end_of_statement ())
5333 {
5334 input_line_pointer++;
5335 pa_type_args (symbol, 0);
5336 }
5337 }
5338
5339 demand_empty_rest_of_line ();
5340}
5341
5342/* Handle a .PROC pseudo-op. It is used to mark the beginning
5343 of a procedure from a syntatical point of view. */
5344
5345static void
5346pa_proc (unused)
5347 int unused;
5348{
5349 struct call_info *call_info;
5350
49863f82 5351#ifdef OBJ_SOM
252b5132
RH		 5352 /* We must have a valid space and subspace. */
5353 pa_check_current_space_and_subspace ();
49863f82 5354#endif
252b5132
RH		 5355
5356 if (within_procedure)
5357 as_fatal (_("Nested procedures"));
5358
5359 /* Reset global variables for new procedure. */
5360 callinfo_found = FALSE;
5361 within_procedure = TRUE;
5362
5363 /* Create another call_info structure. */
5364 call_info = (struct call_info *) xmalloc (sizeof (struct call_info));
5365
5366 if (!call_info)
5367 as_fatal (_("Cannot allocate unwind descriptor\n"));
5368
5369 memset (call_info, 0, sizeof (struct call_info));
5370
5371 call_info->ci_next = NULL;
5372
5373 if (call_info_root == NULL)
5374 {
5375 call_info_root = call_info;
5376 last_call_info = call_info;
5377 }
5378 else
5379 {
5380 last_call_info->ci_next = call_info;
5381 last_call_info = call_info;
5382 }
5383
5384 /* set up defaults on call_info structure */
5385
5386 call_info->ci_unwind.descriptor.cannot_unwind = 0;
5387 call_info->ci_unwind.descriptor.region_desc = 1;
5388 call_info->ci_unwind.descriptor.hpux_interrupt_marker = 0;
5389
5390 /* If we got a .PROC pseudo-op, we know that the function is defined
5391 locally. Make sure it gets into the symbol table. */
5392 {
5393 label_symbol_struct *label_symbol = pa_get_label ();
5394
5395 if (label_symbol)
5396 {
5397 if (label_symbol->lss_label)
5398 {
5399 last_call_info->start_symbol = label_symbol->lss_label;
a0f75b47 5400 symbol_get_bfdsym (label_symbol->lss_label)->flags |= BSF_FUNCTION;
252b5132
RH		 5401 }
5402 else
5403 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5404 }
5405 else
5406 last_call_info->start_symbol = NULL;
5407 }
5408
5409 demand_empty_rest_of_line ();
5410}
5411
5412/* Process the syntatical end of a procedure. Make sure all the
5413 appropriate pseudo-ops were found within the procedure. */
5414
5415static void
5416pa_procend (unused)
5417 int unused;
5418{
5419
49863f82 5420#ifdef OBJ_SOM
252b5132
RH		 5421 /* We must have a valid space and subspace. */
5422 pa_check_current_space_and_subspace ();
49863f82 5423#endif
252b5132
RH		 5424
5425 /* If we are within a procedure definition, make sure we've
5426 defined a label for the procedure; handle case where the
5427 label was defined after the .PROC directive.
5428
5429 Note there's not need to diddle with the segment or fragment
5430 for the label symbol in this case. We have already switched
5431 into the new $CODE$ subspace at this point. */
5432 if (within_procedure && last_call_info->start_symbol == NULL)
5433 {
5434 label_symbol_struct *label_symbol = pa_get_label ();
5435
5436 if (label_symbol)
5437 {
5438 if (label_symbol->lss_label)
5439 {
5440 last_call_info->start_symbol = label_symbol->lss_label;
a0f75b47
ILT		 5441 symbol_get_bfdsym (label_symbol->lss_label)->flags
5442 |= BSF_FUNCTION;
252b5132
RH		 5443#ifdef OBJ_SOM
5444 /* Also handle allocation of a fixup to hold the unwind
5445 information when the label appears after the proc/procend. */
5446 if (within_entry_exit)
5447 {
5448 char *where = frag_more (0);
5449
5450 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
5451 NULL, (offsetT) 0, NULL,
5452 0, R_HPPA_ENTRY, e_fsel, 0, 0,
5453 (int *) &last_call_info->ci_unwind.descriptor);
5454 }
5455#endif
5456 }
5457 else
5458 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5459 }
5460 else
5461 as_bad (_("Missing function name for .PROC"));
5462 }
5463
5464 if (!within_procedure)
5465 as_bad (_("misplaced .procend"));
5466
5467 if (!callinfo_found)
5468 as_bad (_("Missing .callinfo for this procedure"));
5469
5470 if (within_entry_exit)
5471 as_bad (_("Missing .EXIT for a .ENTRY"));
5472
5473#ifdef OBJ_ELF
5474 /* ELF needs to mark the end of each function so that it can compute
5475 the size of the function (apparently its needed in the symbol table). */
5476 hppa_elf_mark_end_of_function ();
5477#endif
5478
5479 within_procedure = FALSE;
5480 demand_empty_rest_of_line ();
5481 pa_undefine_label ();
5482}
5483
49863f82
JL		 5484/* If VALUE is an exact power of two between zero and 2^31, then
5485 return log2 (VALUE). Else return -1. */
5486
5487static int
5488log2 (value)
5489 int value;
5490{
5491 int shift = 0;
5492
5493 while ((1 << shift) != value && shift < 32)
5494 shift++;
5495
5496 if (shift >= 32)
5497 return -1;
5498 else
5499 return shift;
5500}
5501
5502
5503#ifdef OBJ_SOM
5504/* Check to make sure we have a valid space and subspace. */
5505
5506static void
5507pa_check_current_space_and_subspace ()
5508{
5509 if (current_space == NULL)
5510 as_fatal (_("Not in a space.\n"));
5511
5512 if (current_subspace == NULL)
5513 as_fatal (_("Not in a subspace.\n"));
5514}
5515
252b5132
RH		 5516/* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5517 then create a new space entry to hold the information specified
5518 by the parameters to the .SPACE directive. */
5519
5520static sd_chain_struct *
5521pa_parse_space_stmt (space_name, create_flag)
5522 char *space_name;
5523 int create_flag;
5524{
5525 char *name, *ptemp, c;
5526 char loadable, defined, private, sort;
5527 int spnum, temp;
5528 asection *seg = NULL;
5529 sd_chain_struct *space;
5530
5531 /* load default values */
5532 spnum = 0;
5533 sort = 0;
5534 loadable = TRUE;
5535 defined = TRUE;
5536 private = FALSE;
5537 if (strcmp (space_name, "$TEXT$") == 0)
5538 {
5539 seg = pa_def_spaces[0].segment;
5540 defined = pa_def_spaces[0].defined;
5541 private = pa_def_spaces[0].private;
5542 sort = pa_def_spaces[0].sort;
5543 spnum = pa_def_spaces[0].spnum;
5544 }
5545 else if (strcmp (space_name, "$PRIVATE$") == 0)
5546 {
5547 seg = pa_def_spaces[1].segment;
5548 defined = pa_def_spaces[1].defined;
5549 private = pa_def_spaces[1].private;
5550 sort = pa_def_spaces[1].sort;
5551 spnum = pa_def_spaces[1].spnum;
5552 }
5553
5554 if (!is_end_of_statement ())
5555 {
5556 print_errors = FALSE;
5557 ptemp = input_line_pointer + 1;
5558 /* First see if the space was specified as a number rather than
5559 as a name. According to the PA assembly manual the rest of
5560 the line should be ignored. */
5561 temp = pa_parse_number (&ptemp, 0);
5562 if (temp >= 0)
5563 {
5564 spnum = temp;
5565 input_line_pointer = ptemp;
5566 }
5567 else
5568 {
5569 while (!is_end_of_statement ())
5570 {
5571 input_line_pointer++;
5572 name = input_line_pointer;
5573 c = get_symbol_end ();
5574 if ((strncasecmp (name, "spnum", 5) == 0))
5575 {
5576 *input_line_pointer = c;
5577 input_line_pointer++;
5578 spnum = get_absolute_expression ();
5579 }
5580 else if ((strncasecmp (name, "sort", 4) == 0))
5581 {
5582 *input_line_pointer = c;
5583 input_line_pointer++;
5584 sort = get_absolute_expression ();
5585 }
5586 else if ((strncasecmp (name, "unloadable", 10) == 0))
5587 {
5588 *input_line_pointer = c;
5589 loadable = FALSE;
5590 }
5591 else if ((strncasecmp (name, "notdefined", 10) == 0))
5592 {
5593 *input_line_pointer = c;
5594 defined = FALSE;
5595 }
5596 else if ((strncasecmp (name, "private", 7) == 0))
5597 {
5598 *input_line_pointer = c;
5599 private = TRUE;
5600 }
5601 else
5602 {
5603 as_bad (_("Invalid .SPACE argument"));
5604 *input_line_pointer = c;
5605 if (!is_end_of_statement ())
5606 input_line_pointer++;
5607 }
5608 }
5609 }
5610 print_errors = TRUE;
5611 }
5612
5613 if (create_flag && seg == NULL)
5614 seg = subseg_new (space_name, 0);
5615
5616 /* If create_flag is nonzero, then create the new space with
5617 the attributes computed above. Else set the values in
5618 an already existing space -- this can only happen for
5619 the first occurence of a built-in space. */
5620 if (create_flag)
5621 space = create_new_space (space_name, spnum, loadable, defined,
5622 private, sort, seg, 1);
5623 else
5624 {
5625 space = is_defined_space (space_name);
5626 SPACE_SPNUM (space) = spnum;
5627 SPACE_DEFINED (space) = defined & 1;
5628 SPACE_USER_DEFINED (space) = 1;
5629 }
5630
5631#ifdef obj_set_section_attributes
5632 obj_set_section_attributes (seg, defined, private, sort, spnum);
5633#endif
5634
5635 return space;
5636}
5637
5638/* Handle a .SPACE pseudo-op; this switches the current space to the
5639 given space, creating the new space if necessary. */
5640
5641static void
5642pa_space (unused)
5643 int unused;
5644{
5645 char *name, c, *space_name, *save_s;
5646 int temp;
5647 sd_chain_struct *sd_chain;
5648
5649 if (within_procedure)
5650 {
5651 as_bad (_("Can\'t change spaces within a procedure definition. Ignored"));
5652 ignore_rest_of_line ();
5653 }
5654 else
5655 {
5656 /* Check for some of the predefined spaces. FIXME: most of the code
5657 below is repeated several times, can we extract the common parts
5658 and place them into a subroutine or something similar? */
5659 /* FIXME Is this (and the next IF stmt) really right?
5660 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5661 if (strncmp (input_line_pointer, "$TEXT$", 6) == 0)
5662 {
5663 input_line_pointer += 6;
5664 sd_chain = is_defined_space ("$TEXT$");
5665 if (sd_chain == NULL)
5666 sd_chain = pa_parse_space_stmt ("$TEXT$", 1);
5667 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5668 sd_chain = pa_parse_space_stmt ("$TEXT$", 0);
5669
5670 current_space = sd_chain;
5671 subseg_set (text_section, sd_chain->sd_last_subseg);
5672 current_subspace
5673 = pa_subsegment_to_subspace (text_section,
5674 sd_chain->sd_last_subseg);
5675 demand_empty_rest_of_line ();
5676 return;
5677 }
5678 if (strncmp (input_line_pointer, "$PRIVATE$", 9) == 0)
5679 {
5680 input_line_pointer += 9;
5681 sd_chain = is_defined_space ("$PRIVATE$");
5682 if (sd_chain == NULL)
5683 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 1);
5684 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5685 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 0);
5686
5687 current_space = sd_chain;
5688 subseg_set (data_section, sd_chain->sd_last_subseg);
5689 current_subspace
5690 = pa_subsegment_to_subspace (data_section,
5691 sd_chain->sd_last_subseg);
5692 demand_empty_rest_of_line ();
5693 return;
5694 }
5695 if (!strncasecmp (input_line_pointer,
5696 GDB_DEBUG_SPACE_NAME,
5697 strlen (GDB_DEBUG_SPACE_NAME)))
5698 {
5699 input_line_pointer += strlen (GDB_DEBUG_SPACE_NAME);
5700 sd_chain = is_defined_space (GDB_DEBUG_SPACE_NAME);
5701 if (sd_chain == NULL)
5702 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 1);
5703 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5704 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 0);
5705
5706 current_space = sd_chain;
5707
5708 {
5709 asection *gdb_section
5710 = bfd_make_section_old_way (stdoutput, GDB_DEBUG_SPACE_NAME);
5711
5712 subseg_set (gdb_section, sd_chain->sd_last_subseg);
5713 current_subspace
5714 = pa_subsegment_to_subspace (gdb_section,
5715 sd_chain->sd_last_subseg);
5716 }
5717 demand_empty_rest_of_line ();
5718 return;
5719 }
5720
5721 /* It could be a space specified by number. */
5722 print_errors = 0;
5723 save_s = input_line_pointer;
5724 if ((temp = pa_parse_number (&input_line_pointer, 0)) >= 0)
5725 {
5726 if ((sd_chain = pa_find_space_by_number (temp)))
5727 {
5728 current_space = sd_chain;
5729
5730 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
5731 current_subspace
5732 = pa_subsegment_to_subspace (sd_chain->sd_seg,
5733 sd_chain->sd_last_subseg);
5734 demand_empty_rest_of_line ();
5735 return;
5736 }
5737 }
5738
5739 /* Not a number, attempt to create a new space. */
5740 print_errors = 1;
5741 input_line_pointer = save_s;
5742 name = input_line_pointer;
5743 c = get_symbol_end ();
5744 space_name = xmalloc (strlen (name) + 1);
5745 strcpy (space_name, name);
5746 *input_line_pointer = c;
5747
5748 sd_chain = pa_parse_space_stmt (space_name, 1);
5749 current_space = sd_chain;
5750
5751 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
5752 current_subspace = pa_subsegment_to_subspace (sd_chain->sd_seg,
5753 sd_chain->sd_last_subseg);
5754 demand_empty_rest_of_line ();
5755 }
5756}
5757
5758/* Switch to a new space. (I think). FIXME. */
5759
5760static void
5761pa_spnum (unused)
5762 int unused;
5763{
5764 char *name;
5765 char c;
5766 char *p;
5767 sd_chain_struct *space;
5768
5769 name = input_line_pointer;
5770 c = get_symbol_end ();
5771 space = is_defined_space (name);
5772 if (space)
5773 {
5774 p = frag_more (4);
5775 md_number_to_chars (p, SPACE_SPNUM (space), 4);
5776 }
5777 else
5778 as_warn (_("Undefined space: '%s' Assuming space number = 0."), name);
5779
5780 *input_line_pointer = c;
5781 demand_empty_rest_of_line ();
5782}
5783
252b5132
RH		 5784/* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5785 given subspace, creating the new subspace if necessary.
5786
5787 FIXME. Should mirror pa_space more closely, in particular how
5788 they're broken up into subroutines. */
5789
5790static void
5791pa_subspace (create_new)
5792 int create_new;
5793{
49863f82 5794 char *name, *ss_name, c;
252b5132
RH		 5795 char loadable, code_only, common, dup_common, zero, sort;
5796 int i, access, space_index, alignment, quadrant, applicable, flags;
5797 sd_chain_struct *space;
5798 ssd_chain_struct *ssd;
5799 asection *section;
5800
5801 if (current_space == NULL)
5802 as_fatal (_("Must be in a space before changing or declaring subspaces.\n"));
5803
5804 if (within_procedure)
5805 {
5806 as_bad (_("Can\'t change subspaces within a procedure definition. Ignored"));
5807 ignore_rest_of_line ();
5808 }
5809 else
5810 {
5811 name = input_line_pointer;
5812 c = get_symbol_end ();
5813 ss_name = xmalloc (strlen (name) + 1);
5814 strcpy (ss_name, name);
5815 *input_line_pointer = c;
5816
5817 /* Load default values. */
5818 sort = 0;
5819 access = 0x7f;
5820 loadable = 1;
5821 common = 0;
5822 dup_common = 0;
5823 code_only = 0;
5824 zero = 0;
5825 space_index = ~0;
5826 alignment = 1;
5827 quadrant = 0;
252b5132
RH		 5828
5829 space = current_space;
5830 if (create_new)
5831 ssd = NULL;
5832 else
5833 ssd = is_defined_subspace (ss_name);
5834 /* Allow user to override the builtin attributes of subspaces. But
5835 only allow the attributes to be changed once! */
5836 if (ssd && SUBSPACE_DEFINED (ssd))
5837 {
5838 subseg_set (ssd->ssd_seg, ssd->ssd_subseg);
5839 current_subspace = ssd;
5840 if (!is_end_of_statement ())
5841 as_warn (_("Parameters of an existing subspace can\'t be modified"));
5842 demand_empty_rest_of_line ();
5843 return;
5844 }
5845 else
5846 {
5847 /* A new subspace. Load default values if it matches one of
5848 the builtin subspaces. */
5849 i = 0;
5850 while (pa_def_subspaces[i].name)
5851 {
5852 if (strcasecmp (pa_def_subspaces[i].name, ss_name) == 0)
5853 {
5854 loadable = pa_def_subspaces[i].loadable;
5855 common = pa_def_subspaces[i].common;
5856 dup_common = pa_def_subspaces[i].dup_common;
5857 code_only = pa_def_subspaces[i].code_only;
5858 zero = pa_def_subspaces[i].zero;
5859 space_index = pa_def_subspaces[i].space_index;
5860 alignment = pa_def_subspaces[i].alignment;
5861 quadrant = pa_def_subspaces[i].quadrant;
5862 access = pa_def_subspaces[i].access;
5863 sort = pa_def_subspaces[i].sort;
252b5132
RH		 5864 break;
5865 }
5866 i++;
5867 }
5868 }
5869
5870 /* We should be working with a new subspace now. Fill in
5871 any information as specified by the user. */
5872 if (!is_end_of_statement ())
5873 {
5874 input_line_pointer++;
5875 while (!is_end_of_statement ())
5876 {
5877 name = input_line_pointer;
5878 c = get_symbol_end ();
5879 if ((strncasecmp (name, "quad", 4) == 0))
5880 {
5881 *input_line_pointer = c;
5882 input_line_pointer++;
5883 quadrant = get_absolute_expression ();
5884 }
5885 else if ((strncasecmp (name, "align", 5) == 0))
5886 {
5887 *input_line_pointer = c;
5888 input_line_pointer++;
5889 alignment = get_absolute_expression ();
5890 if (log2 (alignment) == -1)
5891 {
5892 as_bad (_("Alignment must be a power of 2"));
5893 alignment = 1;
5894 }
5895 }
5896 else if ((strncasecmp (name, "access", 6) == 0))
5897 {
5898 *input_line_pointer = c;
5899 input_line_pointer++;
5900 access = get_absolute_expression ();
5901 }
5902 else if ((strncasecmp (name, "sort", 4) == 0))
5903 {
5904 *input_line_pointer = c;
5905 input_line_pointer++;
5906 sort = get_absolute_expression ();
5907 }
5908 else if ((strncasecmp (name, "code_only", 9) == 0))
5909 {
5910 *input_line_pointer = c;
5911 code_only = 1;
5912 }
5913 else if ((strncasecmp (name, "unloadable", 10) == 0))
5914 {
5915 *input_line_pointer = c;
5916 loadable = 0;
5917 }
5918 else if ((strncasecmp (name, "common", 6) == 0))
5919 {
5920 *input_line_pointer = c;
5921 common = 1;
5922 }
5923 else if ((strncasecmp (name, "dup_comm", 8) == 0))
5924 {
5925 *input_line_pointer = c;
5926 dup_common = 1;
5927 }
5928 else if ((strncasecmp (name, "zero", 4) == 0))
5929 {
5930 *input_line_pointer = c;
5931 zero = 1;
5932 }
5933 else if ((strncasecmp (name, "first", 5) == 0))
5934 as_bad (_("FIRST not supported as a .SUBSPACE argument"));
5935 else
5936 as_bad (_("Invalid .SUBSPACE argument"));
5937 if (!is_end_of_statement ())
5938 input_line_pointer++;
5939 }
5940 }
5941
5942 /* Compute a reasonable set of BFD flags based on the information
5943 in the .subspace directive. */
5944 applicable = bfd_applicable_section_flags (stdoutput);
5945 flags = 0;
5946 if (loadable)
5947 flags |= (SEC_ALLOC | SEC_LOAD);
5948 if (code_only)
5949 flags |= SEC_CODE;
5950 if (common || dup_common)
5951 flags |= SEC_IS_COMMON;
5952
5953 flags |= SEC_RELOC | SEC_HAS_CONTENTS;
5954
5955 /* This is a zero-filled subspace (eg BSS). */
5956 if (zero)
5957 flags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
5958
5959 applicable &= flags;
5960
5961 /* If this is an existing subspace, then we want to use the
5962 segment already associated with the subspace.
5963
5964 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
5965 lots of sections. It might be a problem in the PA ELF
5966 code, I do not know yet. For now avoid creating anything
5967 but the "standard" sections for ELF. */
5968 if (create_new)
5969 section = subseg_force_new (ss_name, 0);
5970 else if (ssd)
5971 section = ssd->ssd_seg;
252b5132
RH		 5972 else
5973 section = subseg_new (ss_name, 0);
5974
5975 if (zero)
5976 seg_info (section)->bss = 1;
5977
5978 /* Now set the flags. */
5979 bfd_set_section_flags (stdoutput, section, applicable);
5980
5981 /* Record any alignment request for this section. */
5982 record_alignment (section, log2 (alignment));
5983
5984 /* Set the starting offset for this section. */
5985 bfd_set_section_vma (stdoutput, section,
5986 pa_subspace_start (space, quadrant));
5987
5988 /* Now that all the flags are set, update an existing subspace,
5989 or create a new one. */
5990 if (ssd)
5991
5992 current_subspace = update_subspace (space, ss_name, loadable,
5993 code_only, common, dup_common,
5994 sort, zero, access, space_index,
5995 alignment, quadrant,
5996 section);
5997 else
5998 current_subspace = create_new_subspace (space, ss_name, loadable,
5999 code_only, common,
6000 dup_common, zero, sort,
6001 access, space_index,
6002 alignment, quadrant, section);
6003
6004 demand_empty_rest_of_line ();
6005 current_subspace->ssd_seg = section;
6006 subseg_set (current_subspace->ssd_seg, current_subspace->ssd_subseg);
6007 }
6008 SUBSPACE_DEFINED (current_subspace) = 1;
6009}
6010
6011
6012/* Create default space and subspace dictionaries. */
6013
6014static void
6015pa_spaces_begin ()
6016{
6017 int i;
6018
6019 space_dict_root = NULL;
6020 space_dict_last = NULL;
6021
6022 i = 0;
6023 while (pa_def_spaces[i].name)
6024 {
6025 char *name;
6026
6027 /* Pick the right name to use for the new section. */
49863f82 6028 name = pa_def_spaces[i].name;
252b5132
RH		 6029
6030 pa_def_spaces[i].segment = subseg_new (name, 0);
6031 create_new_space (pa_def_spaces[i].name, pa_def_spaces[i].spnum,
6032 pa_def_spaces[i].loadable, pa_def_spaces[i].defined,
6033 pa_def_spaces[i].private, pa_def_spaces[i].sort,
6034 pa_def_spaces[i].segment, 0);
6035 i++;
6036 }
6037
6038 i = 0;
6039 while (pa_def_subspaces[i].name)
6040 {
6041 char *name;
6042 int applicable, subsegment;
6043 asection *segment = NULL;
6044 sd_chain_struct *space;
6045
6046 /* Pick the right name for the new section and pick the right
6047 subsegment number. */
49863f82
JL		 6048 name = pa_def_subspaces[i].name;
6049 subsegment = 0;
252b5132
RH		 6050
6051 /* Create the new section. */
6052 segment = subseg_new (name, subsegment);
6053
6054
6055 /* For SOM we want to replace the standard .text, .data, and .bss
6056 sections with our own. We also want to set BFD flags for
6057 all the built-in subspaces. */
49863f82 6058 if (!strcmp (pa_def_subspaces[i].name, "$CODE$"))
252b5132
RH		 6059 {
6060 text_section = segment;
6061 applicable = bfd_applicable_section_flags (stdoutput);
6062 bfd_set_section_flags (stdoutput, segment,
6063 applicable & (SEC_ALLOC | SEC_LOAD
6064 | SEC_RELOC | SEC_CODE
6065 | SEC_READONLY
6066 | SEC_HAS_CONTENTS));
6067 }
49863f82 6068 else if (!strcmp (pa_def_subspaces[i].name, "$DATA$"))
252b5132
RH		 6069 {
6070 data_section = segment;
6071 applicable = bfd_applicable_section_flags (stdoutput);
6072 bfd_set_section_flags (stdoutput, segment,
6073 applicable & (SEC_ALLOC | SEC_LOAD
6074 | SEC_RELOC
6075 | SEC_HAS_CONTENTS));
6076
6077
6078 }
49863f82 6079 else if (!strcmp (pa_def_subspaces[i].name, "$BSS$"))
252b5132
RH		 6080 {
6081 bss_section = segment;
6082 applicable = bfd_applicable_section_flags (stdoutput);
6083 bfd_set_section_flags (stdoutput, segment,
6084 applicable & SEC_ALLOC);
6085 }
49863f82 6086 else if (!strcmp (pa_def_subspaces[i].name, "$LIT$"))
252b5132
RH		 6087 {
6088 applicable = bfd_applicable_section_flags (stdoutput);
6089 bfd_set_section_flags (stdoutput, segment,
6090 applicable & (SEC_ALLOC | SEC_LOAD
6091 | SEC_RELOC
6092 | SEC_READONLY
6093 | SEC_HAS_CONTENTS));
6094 }
49863f82 6095 else if (!strcmp (pa_def_subspaces[i].name, "$MILLICODE$"))
252b5132
RH		 6096 {
6097 applicable = bfd_applicable_section_flags (stdoutput);
6098 bfd_set_section_flags (stdoutput, segment,
6099 applicable & (SEC_ALLOC | SEC_LOAD
6100 | SEC_RELOC
6101 | SEC_READONLY
6102 | SEC_HAS_CONTENTS));
6103 }
49863f82 6104 else if (!strcmp (pa_def_subspaces[i].name, "$UNWIND$"))
252b5132
RH		 6105 {
6106 applicable = bfd_applicable_section_flags (stdoutput);
6107 bfd_set_section_flags (stdoutput, segment,
6108 applicable & (SEC_ALLOC | SEC_LOAD
6109 | SEC_RELOC
6110 | SEC_READONLY
6111 | SEC_HAS_CONTENTS));
6112 }
6113
6114 /* Find the space associated with this subspace. */
6115 space = pa_segment_to_space (pa_def_spaces[pa_def_subspaces[i].
6116 def_space_index].segment);
6117 if (space == NULL)
6118 {
6119 as_fatal (_("Internal error: Unable to find containing space for %s."),
6120 pa_def_subspaces[i].name);
6121 }
6122
6123 create_new_subspace (space, name,
6124 pa_def_subspaces[i].loadable,
6125 pa_def_subspaces[i].code_only,
6126 pa_def_subspaces[i].common,
6127 pa_def_subspaces[i].dup_common,
6128 pa_def_subspaces[i].zero,
6129 pa_def_subspaces[i].sort,
6130 pa_def_subspaces[i].access,
6131 pa_def_subspaces[i].space_index,
6132 pa_def_subspaces[i].alignment,
6133 pa_def_subspaces[i].quadrant,
6134 segment);
6135 i++;
6136 }
6137}
6138
6139
6140
6141/* Create a new space NAME, with the appropriate flags as defined
6142 by the given parameters. */
6143
6144static sd_chain_struct *
6145create_new_space (name, spnum, loadable, defined, private,
6146 sort, seg, user_defined)
6147 char *name;
6148 int spnum;
6149 int loadable;
6150 int defined;
6151 int private;
6152 int sort;
6153 asection *seg;
6154 int user_defined;
6155{
6156 sd_chain_struct *chain_entry;
6157
6158 chain_entry = (sd_chain_struct *) xmalloc (sizeof (sd_chain_struct));
6159 if (!chain_entry)
6160 as_fatal (_("Out of memory: could not allocate new space chain entry: %s\n"),
6161 name);
6162
6163 SPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6164 strcpy (SPACE_NAME (chain_entry), name);
6165 SPACE_DEFINED (chain_entry) = defined;
6166 SPACE_USER_DEFINED (chain_entry) = user_defined;
6167 SPACE_SPNUM (chain_entry) = spnum;
6168
6169 chain_entry->sd_seg = seg;
6170 chain_entry->sd_last_subseg = -1;
6171 chain_entry->sd_subspaces = NULL;
6172 chain_entry->sd_next = NULL;
6173
6174 /* Find spot for the new space based on its sort key. */
6175 if (!space_dict_last)
6176 space_dict_last = chain_entry;
6177
6178 if (space_dict_root == NULL)
6179 space_dict_root = chain_entry;
6180 else
6181 {
6182 sd_chain_struct *chain_pointer;
6183 sd_chain_struct *prev_chain_pointer;
6184
6185 chain_pointer = space_dict_root;
6186 prev_chain_pointer = NULL;
6187
6188 while (chain_pointer)
6189 {
6190 prev_chain_pointer = chain_pointer;
6191 chain_pointer = chain_pointer->sd_next;
6192 }
6193
6194 /* At this point we've found the correct place to add the new
6195 entry. So add it and update the linked lists as appropriate. */
6196 if (prev_chain_pointer)
6197 {
6198 chain_entry->sd_next = chain_pointer;
6199 prev_chain_pointer->sd_next = chain_entry;
6200 }
6201 else
6202 {
6203 space_dict_root = chain_entry;
6204 chain_entry->sd_next = chain_pointer;
6205 }
6206
6207 if (chain_entry->sd_next == NULL)
6208 space_dict_last = chain_entry;
6209 }
6210
6211 /* This is here to catch predefined spaces which do not get
6212 modified by the user's input. Another call is found at
6213 the bottom of pa_parse_space_stmt to handle cases where
6214 the user modifies a predefined space. */
6215#ifdef obj_set_section_attributes
6216 obj_set_section_attributes (seg, defined, private, sort, spnum);
6217#endif
6218
6219 return chain_entry;
6220}
6221
6222/* Create a new subspace NAME, with the appropriate flags as defined
6223 by the given parameters.
6224
6225 Add the new subspace to the subspace dictionary chain in numerical
6226 order as defined by the SORT entries. */
6227
6228static ssd_chain_struct *
6229create_new_subspace (space, name, loadable, code_only, common,
6230 dup_common, is_zero, sort, access, space_index,
6231 alignment, quadrant, seg)
6232 sd_chain_struct *space;
6233 char *name;
6234 int loadable, code_only, common, dup_common, is_zero;
6235 int sort;
6236 int access;
6237 int space_index;
6238 int alignment;
6239 int quadrant;
6240 asection *seg;
6241{
6242 ssd_chain_struct *chain_entry;
6243
6244 chain_entry = (ssd_chain_struct *) xmalloc (sizeof (ssd_chain_struct));
6245 if (!chain_entry)
6246 as_fatal (_("Out of memory: could not allocate new subspace chain entry: %s\n"), name);
6247
6248 SUBSPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6249 strcpy (SUBSPACE_NAME (chain_entry), name);
6250
6251 /* Initialize subspace_defined. When we hit a .subspace directive
6252 we'll set it to 1 which "locks-in" the subspace attributes. */
6253 SUBSPACE_DEFINED (chain_entry) = 0;
6254
49863f82 6255 chain_entry->ssd_subseg = 0;
252b5132
RH		 6256 chain_entry->ssd_seg = seg;
6257 chain_entry->ssd_next = NULL;
6258
6259 /* Find spot for the new subspace based on its sort key. */
6260 if (space->sd_subspaces == NULL)
6261 space->sd_subspaces = chain_entry;
6262 else
6263 {
6264 ssd_chain_struct *chain_pointer;
6265 ssd_chain_struct *prev_chain_pointer;
6266
6267 chain_pointer = space->sd_subspaces;
6268 prev_chain_pointer = NULL;
6269
6270 while (chain_pointer)
6271 {
6272 prev_chain_pointer = chain_pointer;
6273 chain_pointer = chain_pointer->ssd_next;
6274 }
6275
6276 /* Now we have somewhere to put the new entry. Insert it and update
6277 the links. */
6278 if (prev_chain_pointer)
6279 {
6280 chain_entry->ssd_next = chain_pointer;
6281 prev_chain_pointer->ssd_next = chain_entry;
6282 }
6283 else
6284 {
6285 space->sd_subspaces = chain_entry;
6286 chain_entry->ssd_next = chain_pointer;
6287 }
6288 }
6289
6290#ifdef obj_set_subsection_attributes
6291 obj_set_subsection_attributes (seg, space->sd_seg, access,
6292 sort, quadrant);
6293#endif
6294
6295 return chain_entry;
6296}
6297
6298/* Update the information for the given subspace based upon the
6299 various arguments. Return the modified subspace chain entry. */
6300
6301static ssd_chain_struct *
6302update_subspace (space, name, loadable, code_only, common, dup_common, sort,
6303 zero, access, space_index, alignment, quadrant, section)
6304 sd_chain_struct *space;
6305 char *name;
6306 int loadable;
6307 int code_only;
6308 int common;
6309 int dup_common;
6310 int zero;
6311 int sort;
6312 int access;
6313 int space_index;
6314 int alignment;
6315 int quadrant;
6316 asection *section;
6317{
6318 ssd_chain_struct *chain_entry;
6319
6320 chain_entry = is_defined_subspace (name);
6321
6322#ifdef obj_set_subsection_attributes
6323 obj_set_subsection_attributes (section, space->sd_seg, access,
6324 sort, quadrant);
6325#endif
6326
6327 return chain_entry;
6328}
6329
6330/* Return the space chain entry for the space with the name NAME or
6331 NULL if no such space exists. */
6332
6333static sd_chain_struct *
6334is_defined_space (name)
6335 char *name;
6336{
6337 sd_chain_struct *chain_pointer;
6338
6339 for (chain_pointer = space_dict_root;
6340 chain_pointer;
6341 chain_pointer = chain_pointer->sd_next)
6342 {
6343 if (strcmp (SPACE_NAME (chain_pointer), name) == 0)
6344 return chain_pointer;
6345 }
6346
6347 /* No mapping from segment to space was found. Return NULL. */
6348 return NULL;
6349}
6350
6351/* Find and return the space associated with the given seg. If no mapping
6352 from the given seg to a space is found, then return NULL.
6353
6354 Unlike subspaces, the number of spaces is not expected to grow much,
6355 so a linear exhaustive search is OK here. */
6356
6357static sd_chain_struct *
6358pa_segment_to_space (seg)
6359 asection *seg;
6360{
6361 sd_chain_struct *space_chain;
6362
6363 /* Walk through each space looking for the correct mapping. */
6364 for (space_chain = space_dict_root;
6365 space_chain;
6366 space_chain = space_chain->sd_next)
6367 {
6368 if (space_chain->sd_seg == seg)
6369 return space_chain;
6370 }
6371
6372 /* Mapping was not found. Return NULL. */
6373 return NULL;
6374}
6375
6376/* Return the space chain entry for the subspace with the name NAME or
6377 NULL if no such subspace exists.
6378
6379 Uses a linear search through all the spaces and subspaces, this may
6380 not be appropriate if we ever being placing each function in its
6381 own subspace. */
6382
6383static ssd_chain_struct *
6384is_defined_subspace (name)
6385 char *name;
6386{
6387 sd_chain_struct *space_chain;
6388 ssd_chain_struct *subspace_chain;
6389
6390 /* Walk through each space. */
6391 for (space_chain = space_dict_root;
6392 space_chain;
6393 space_chain = space_chain->sd_next)
6394 {
6395 /* Walk through each subspace looking for a name which matches. */
6396 for (subspace_chain = space_chain->sd_subspaces;
6397 subspace_chain;
6398 subspace_chain = subspace_chain->ssd_next)
6399 if (strcmp (SUBSPACE_NAME (subspace_chain), name) == 0)
6400 return subspace_chain;
6401 }
6402
6403 /* Subspace wasn't found. Return NULL. */
6404 return NULL;
6405}
6406
6407/* Find and return the subspace associated with the given seg. If no
6408 mapping from the given seg to a subspace is found, then return NULL.
6409
6410 If we ever put each procedure/function within its own subspace
6411 (to make life easier on the compiler and linker), then this will have
6412 to become more efficient. */
6413
6414static ssd_chain_struct *
6415pa_subsegment_to_subspace (seg, subseg)
6416 asection *seg;
6417 subsegT subseg;
6418{
6419 sd_chain_struct *space_chain;
6420 ssd_chain_struct *subspace_chain;
6421
6422 /* Walk through each space. */
6423 for (space_chain = space_dict_root;
6424 space_chain;
6425 space_chain = space_chain->sd_next)
6426 {
6427 if (space_chain->sd_seg == seg)
6428 {
6429 /* Walk through each subspace within each space looking for
6430 the correct mapping. */
6431 for (subspace_chain = space_chain->sd_subspaces;
6432 subspace_chain;
6433 subspace_chain = subspace_chain->ssd_next)
6434 if (subspace_chain->ssd_subseg == (int) subseg)
6435 return subspace_chain;
6436 }
6437 }
6438
6439 /* No mapping from subsegment to subspace found. Return NULL. */
6440 return NULL;
6441}
6442
6443/* Given a number, try and find a space with the name number.
6444
6445 Return a pointer to a space dictionary chain entry for the space
6446 that was found or NULL on failure. */
6447
6448static sd_chain_struct *
6449pa_find_space_by_number (number)
6450 int number;
6451{
6452 sd_chain_struct *space_chain;
6453
6454 for (space_chain = space_dict_root;
6455 space_chain;
6456 space_chain = space_chain->sd_next)
6457 {
6458 if (SPACE_SPNUM (space_chain) == (unsigned int) number)
6459 return space_chain;
6460 }
6461
6462 /* No appropriate space found. Return NULL. */
6463 return NULL;
6464}
6465
6466/* Return the starting address for the given subspace. If the starting
6467 address is unknown then return zero. */
6468
6469static unsigned int
6470pa_subspace_start (space, quadrant)
6471 sd_chain_struct *space;
6472 int quadrant;
6473{
252b5132
RH		 6474 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6475 is not correct for the PA OSF1 port. */
6476 if ((strcmp (SPACE_NAME (space), "$PRIVATE$") == 0) && quadrant == 1)
6477 return 0x40000000;
6478 else if (space->sd_seg == data_section && quadrant == 1)
6479 return 0x40000000;
6480 else
6481 return 0;
252b5132
RH		 6482 return 0;
6483}
6484
6485/* FIXME. Needs documentation. */
6486static int
6487pa_next_subseg (space)
6488 sd_chain_struct *space;
6489{
6490
6491 space->sd_last_subseg++;
6492 return space->sd_last_subseg;
6493}
49863f82 6494#endif
252b5132
RH		 6495
6496/* Helper function for pa_stringer. Used to find the end of
6497 a string. */
6498
6499static unsigned int
6500pa_stringer_aux (s)
6501 char *s;
6502{
6503 unsigned int c = *s & CHAR_MASK;
6504
49863f82 6505#ifdef OBJ_SOM
252b5132
RH		 6506 /* We must have a valid space and subspace. */
6507 pa_check_current_space_and_subspace ();
49863f82 6508#endif
252b5132
RH		 6509
6510 switch (c)
6511 {
6512 case '\"':
6513 c = NOT_A_CHAR;
6514 break;
6515 default:
6516 break;
6517 }
6518 return c;
6519}
6520
6521/* Handle a .STRING type pseudo-op. */
6522
6523static void
6524pa_stringer (append_zero)
6525 int append_zero;
6526{
6527 char *s, num_buf[4];
6528 unsigned int c;
6529 int i;
6530
6531 /* Preprocess the string to handle PA-specific escape sequences.
6532 For example, \xDD where DD is a hexidecimal number should be
6533 changed to \OOO where OOO is an octal number. */
6534
6535 /* Skip the opening quote. */
6536 s = input_line_pointer + 1;
6537
6538 while (is_a_char (c = pa_stringer_aux (s++)))
6539 {
6540 if (c == '\\')
6541 {
6542 c = *s;
6543 switch (c)
6544 {
6545 /* Handle \x<num>. */
6546 case 'x':
6547 {
6548 unsigned int number;
6549 int num_digit;
6550 char dg;
6551 char *s_start = s;
6552
6553 /* Get pas the 'x'. */
6554 s++;
6555 for (num_digit = 0, number = 0, dg = *s;
6556 num_digit < 2
6557 && (isdigit (dg) || (dg >= 'a' && dg <= 'f')
6558 || (dg >= 'A' && dg <= 'F'));
6559 num_digit++)
6560 {
6561 if (isdigit (dg))
6562 number = number * 16 + dg - '0';
6563 else if (dg >= 'a' && dg <= 'f')
6564 number = number * 16 + dg - 'a' + 10;
6565 else
6566 number = number * 16 + dg - 'A' + 10;
6567
6568 s++;
6569 dg = *s;
6570 }
6571 if (num_digit > 0)
6572 {
6573 switch (num_digit)
6574 {
6575 case 1:
6576 sprintf (num_buf, "%02o", number);
6577 break;
6578 case 2:
6579 sprintf (num_buf, "%03o", number);
6580 break;
6581 }
6582 for (i = 0; i <= num_digit; i++)
6583 s_start[i] = num_buf[i];
6584 }
6585 break;
6586 }
6587 /* This might be a "\"", skip over the escaped char. */
6588 default:
6589 s++;
6590 break;
6591 }
6592 }
6593 }
6594 stringer (append_zero);
6595 pa_undefine_label ();
6596}
6597
6598/* Handle a .VERSION pseudo-op. */
6599
6600static void
6601pa_version (unused)
6602 int unused;
6603{
6604 obj_version (0);
6605 pa_undefine_label ();
6606}
6607
6608#ifdef OBJ_SOM
6609
6610/* Handle a .COMPILER pseudo-op. */
6611
6612static void
6613pa_compiler (unused)
6614 int unused;
6615{
6616 obj_som_compiler (0);
6617 pa_undefine_label ();
6618}
6619
6620#endif
6621
6622/* Handle a .COPYRIGHT pseudo-op. */
6623
6624static void
6625pa_copyright (unused)
6626 int unused;
6627{
6628 obj_copyright (0);
6629 pa_undefine_label ();
6630}
6631
6632/* Just like a normal cons, but when finished we have to undefine
6633 the latest space label. */
6634
6635static void
6636pa_cons (nbytes)
6637 int nbytes;
6638{
6639 cons (nbytes);
6640 pa_undefine_label ();
6641}
6642
6643/* Switch to the data space. As usual delete our label. */
6644
6645static void
6646pa_data (unused)
6647 int unused;
6648{
49863f82 6649#ifdef OBJ_SOM
252b5132
RH		 6650 current_space = is_defined_space ("$PRIVATE$");
6651 current_subspace
6652 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
49863f82 6653#endif
252b5132
RH		 6654 s_data (0);
6655 pa_undefine_label ();
6656}
6657
6658/* Like float_cons, but we need to undefine our label. */
6659
6660static void
6661pa_float_cons (float_type)
6662 int float_type;
6663{
6664 float_cons (float_type);
6665 pa_undefine_label ();
6666}
6667
6668/* Like s_fill, but delete our label when finished. */
6669
6670static void
6671pa_fill (unused)
6672 int unused;
6673{
49863f82 6674#ifdef OBJ_SOM
252b5132
RH		 6675 /* We must have a valid space and subspace. */
6676 pa_check_current_space_and_subspace ();
49863f82 6677#endif
252b5132
RH		 6678
6679 s_fill (0);
6680 pa_undefine_label ();
6681}
6682
6683/* Like lcomm, but delete our label when finished. */
6684
6685static void
6686pa_lcomm (needs_align)
6687 int needs_align;
6688{
49863f82 6689#ifdef OBJ_SOM
252b5132
RH		 6690 /* We must have a valid space and subspace. */
6691 pa_check_current_space_and_subspace ();
49863f82 6692#endif
252b5132
RH		 6693
6694 s_lcomm (needs_align);
6695 pa_undefine_label ();
6696}
6697
6698/* Like lsym, but delete our label when finished. */
6699
6700static void
6701pa_lsym (unused)
6702 int unused;
6703{
49863f82 6704#ifdef OBJ_SOM
252b5132
RH		 6705 /* We must have a valid space and subspace. */
6706 pa_check_current_space_and_subspace ();
49863f82 6707#endif
252b5132
RH		 6708
6709 s_lsym (0);
6710 pa_undefine_label ();
6711}
6712
6713/* Switch to the text space. Like s_text, but delete our
6714 label when finished. */
6715static void
6716pa_text (unused)
6717 int unused;
6718{
49863f82 6719#ifdef OBJ_SOM
252b5132
RH		 6720 current_space = is_defined_space ("$TEXT$");
6721 current_subspace
6722 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
49863f82 6723#endif
252b5132
RH		 6724
6725 s_text (0);
6726 pa_undefine_label ();
6727}
6728
6729/* On the PA relocations which involve function symbols must not be
6730 adjusted. This so that the linker can know when/how to create argument
6731 relocation stubs for indirect calls and calls to static functions.
6732
6733 "T" field selectors create DLT relative fixups for accessing
6734 globals and statics in PIC code; each DLT relative fixup creates
6735 an entry in the DLT table. The entries contain the address of
6736 the final target (eg accessing "foo" would create a DLT entry
6737 with the address of "foo").
6738
6739 Unfortunately, the HP linker doesn't take into account any addend
6740 when generating the DLT; so accessing $LIT$+8 puts the address of
6741 $LIT$ into the DLT rather than the address of $LIT$+8.
6742
6743 The end result is we can't perform relocation symbol reductions for
6744 any fixup which creates entries in the DLT (eg they use "T" field
6745 selectors).
6746
6747 Reject reductions involving symbols with external scope; such
6748 reductions make life a living hell for object file editors.
6749
6750 FIXME. Also reject R_HPPA relocations which are 32bits wide in
6751 the code space. The SOM BFD backend doesn't know how to pull the
6752 right bits out of an instruction. */
6753
6754int
6755hppa_fix_adjustable (fixp)
6756 fixS *fixp;
6757{
6758 struct hppa_fix_struct *hppa_fix;
6759
6760 hppa_fix = (struct hppa_fix_struct *) fixp->tc_fix_data;
6761
6762#ifdef OBJ_SOM
6763 /* Reject reductions of symbols in 32bit relocs. */
6764 if (fixp->fx_r_type == R_HPPA && hppa_fix->fx_r_format == 32)
6765 return 0;
6766
6767 /* Reject reductions of symbols in sym1-sym2 expressions when
6768 the fixup will occur in a CODE subspace.
6769
6770 XXX FIXME: Long term we probably want to reject all of these;
6771 for example reducing in the debug section would lose if we ever
6772 supported using the optimizing hp linker. */
6773 if (fixp->fx_addsy
6774 && fixp->fx_subsy
6775 && (hppa_fix->segment->flags & SEC_CODE))
6776 {
6777 /* Apparently sy_used_in_reloc never gets set for sub symbols. */
398e8c25 6778 symbol_mark_used_in_reloc (fixp->fx_subsy);
252b5132
RH		 6779 return 0;
6780 }
6781
6782 /* We can't adjust any relocs that use LR% and RR% field selectors.
6783 That confuses the HP linker. */
6784 if (hppa_fix->fx_r_field == e_lrsel
6785 || hppa_fix->fx_r_field == e_rrsel
6786 || hppa_fix->fx_r_field == e_nlrsel)
6787 return 0;
6788#endif
6789
6790 /* Reject reductions of symbols in DLT relative relocs,
6791 relocations with plabels. */
6792 if (hppa_fix->fx_r_field == e_tsel
6793 || hppa_fix->fx_r_field == e_ltsel
6794 || hppa_fix->fx_r_field == e_rtsel
6795 || hppa_fix->fx_r_field == e_psel
6796 || hppa_fix->fx_r_field == e_rpsel
6797 || hppa_fix->fx_r_field == e_lpsel)
6798 return 0;
6799
a0f75b47 6800 if (fixp->fx_addsy && S_IS_EXTERNAL (fixp->fx_addsy))
252b5132
RH		 6801 return 0;
6802
6803 /* Reject absolute calls (jumps). */
6804 if (hppa_fix->fx_r_type == R_HPPA_ABS_CALL)
6805 return 0;
6806
6807 /* Reject reductions of function symbols. */
a0f75b47 6808 if (fixp->fx_addsy == 0 || ! S_IS_FUNCTION (fixp->fx_addsy))
252b5132
RH		 6809 return 1;
6810
6811 return 0;
6812}
6813
6814/* Return nonzero if the fixup in FIXP will require a relocation,
6815 even it if appears that the fixup could be completely handled
6816 within GAS. */
6817
6818int
6819hppa_force_relocation (fixp)
6820 fixS *fixp;
6821{
6822 struct hppa_fix_struct *hppa_fixp;
6823 int distance;
6824
6825 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
6826#ifdef OBJ_SOM
6827 if (fixp->fx_r_type == R_HPPA_ENTRY || fixp->fx_r_type == R_HPPA_EXIT
6828 || fixp->fx_r_type == R_HPPA_BEGIN_BRTAB
6829 || fixp->fx_r_type == R_HPPA_END_BRTAB
6830 || fixp->fx_r_type == R_HPPA_BEGIN_TRY
6831 || fixp->fx_r_type == R_HPPA_END_TRY
6832 || (fixp->fx_addsy != NULL && fixp->fx_subsy != NULL
6833 && (hppa_fixp->segment->flags & SEC_CODE) != 0))
6834 return 1;
6835#endif
6836
6837#define arg_reloc_stub_needed(CALLER, CALLEE) \
6838 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6839
49863f82 6840#ifdef OBJ_SOM
252b5132
RH		 6841 /* It is necessary to force PC-relative calls/jumps to have a relocation
6842 entry if they're going to need either a argument relocation or long
6843 call stub. FIXME. Can't we need the same for absolute calls? */
6844 if (fixp->fx_pcrel && fixp->fx_addsy
6845 && (arg_reloc_stub_needed ((long) ((obj_symbol_type *)
a0f75b47
ILT		 6846 symbol_get_bfdsym (fixp->fx_addsy))->tc_data.ap.hppa_arg_reloc,
6847 hppa_fixp->fx_arg_reloc)))
252b5132 6848 return 1;
49863f82 6849#endif
252b5132
RH		 6850 distance = (fixp->fx_offset + S_GET_VALUE (fixp->fx_addsy)
6851 - md_pcrel_from (fixp));
6852 /* Now check and see if we're going to need a long-branch stub. */
6853 if (fixp->fx_r_type == R_HPPA_PCREL_CALL
6854 && (distance > 262143 || distance < -262144))
6855 return 1;
6856
6857 if (fixp->fx_r_type == R_HPPA_ABS_CALL)
6858 return 1;
6859#undef arg_reloc_stub_needed
6860
6861 /* No need (yet) to force another relocations to be emitted. */
6862 return 0;
6863}
6864
6865/* Now for some ELF specific code. FIXME. */
6866#ifdef OBJ_ELF
6867/* Mark the end of a function so that it's possible to compute
6868 the size of the function in hppa_elf_final_processing. */
6869
6870static void
6871hppa_elf_mark_end_of_function ()
6872{
6873 /* ELF does not have EXIT relocations. All we do is create a
6874 temporary symbol marking the end of the function. */
6875 char *name = (char *)
6876 xmalloc (strlen ("L$\001end_") +
6877 strlen (S_GET_NAME (last_call_info->start_symbol)) + 1);
6878
6879 if (name)
6880 {
6881 symbolS *symbolP;
6882
6883 strcpy (name, "L$\001end_");
6884 strcat (name, S_GET_NAME (last_call_info->start_symbol));
6885
6886 /* If we have a .exit followed by a .procend, then the
6887 symbol will have already been defined. */
6888 symbolP = symbol_find (name);
6889 if (symbolP)
6890 {
6891 /* The symbol has already been defined! This can
6892 happen if we have a .exit followed by a .procend.
6893
6894 This is *not* an error. All we want to do is free
6895 the memory we just allocated for the name and continue. */
6896 xfree (name);
6897 }
6898 else
6899 {
6900 /* symbol value should be the offset of the
6901 last instruction of the function */
6902 symbolP = symbol_new (name, now_seg, (valueT) (frag_now_fix () - 4),
6903 frag_now);
6904
6905 assert (symbolP);
a0f75b47 6906 S_CLEAR_EXTERNAL (symbolP);
252b5132
RH		 6907 symbol_table_insert (symbolP);
6908 }
6909
6910 if (symbolP)
6911 last_call_info->end_symbol = symbolP;
6912 else
6913 as_bad (_("Symbol '%s' could not be created."), name);
6914
6915 }
6916 else
6917 as_bad (_("No memory for symbol name."));
6918
6919}
6920
6921/* For ELF, this function serves one purpose: to setup the st_size
6922 field of STT_FUNC symbols. To do this, we need to scan the
6923 call_info structure list, determining st_size in by taking the
6924 difference in the address of the beginning/end marker symbols. */
6925
6926void
6927elf_hppa_final_processing ()
6928{
6929 struct call_info *call_info_pointer;
6930
6931 for (call_info_pointer = call_info_root;
6932 call_info_pointer;
6933 call_info_pointer = call_info_pointer->ci_next)
6934 {
6935 elf_symbol_type *esym
a0f75b47
ILT		 6936 = ((elf_symbol_type *)
6937 symbol_get_bfdsym (call_info_pointer->start_symbol));
252b5132
RH		 6938 esym->internal_elf_sym.st_size =
6939 S_GET_VALUE (call_info_pointer->end_symbol)
6940 - S_GET_VALUE (call_info_pointer->start_symbol) + 4;
6941 }
6942}
6943#endif
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