]> git.ipfire.org Git - thirdparty/binutils-gdb.git/blame - gas/config/tc-hppa.c
projects / thirdparty / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Applied patch from Stephane Carrez <stcarrez@worldnet.fr> to fix pointer size assump...
[thirdparty/binutils-gdb.git] / gas / config / tc-hppa.c
CommitLineData
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
a97685e9
JL		 1572 /* Handle %sar or %cr11. No bits get set, we just verify that it
1573 is there. */
1574 case '!':
1575 /* Skip whitespace before register. */
1576 while (*s == ' ' || *s == '\t')
1577 s = s + 1;
1578
1579 if (!strncasecmp(s, "%sar", 4))
1580 {
1581 s += 4;
1582 continue;
1583 }
1584 else if (!strncasecmp(s, "%cr11", 5))
1585 {
1586 s += 5;
1587 continue;
1588 }
1589 break;
1590
252b5132
RH		 1591 /* Handle a 5 bit register field at 15. */
1592 case 'x':
1593 num = pa_parse_number (&s, 0);
1594 CHECK_FIELD (num, 31, 0, 0);
1595 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1596
1597 /* Handle a 5 bit register field at 31. */
1598 case 'y':
1599 case 't':
1600 num = pa_parse_number (&s, 0);
1601 CHECK_FIELD (num, 31, 0, 0);
1602 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1603
1604 /* Handle a 5 bit field length at 31. */
1605 case 'T':
1606 num = pa_get_absolute_expression (&the_insn, &s);
1607 s = expr_end;
1608 CHECK_FIELD (num, 32, 1, 0);
1609 INSERT_FIELD_AND_CONTINUE (opcode, 32 - num, 0);
1610
1611 /* Handle a 5 bit immediate at 15. */
1612 case '5':
1613 num = pa_get_absolute_expression (&the_insn, &s);
1614 s = expr_end;
1615 CHECK_FIELD (num, 15, -16, 0);
1616 low_sign_unext (num, 5, &num);
1617 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1618
1619 /* Handle a 5 bit immediate at 31. */
1620 case 'V':
1621 num = pa_get_absolute_expression (&the_insn, &s);
1622 s = expr_end;
1623 CHECK_FIELD (num, 15, -16, 0)
1624 low_sign_unext (num, 5, &num);
1625 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1626
1627 /* Handle an unsigned 5 bit immediate at 31. */
1628 case 'r':
1629 num = pa_get_absolute_expression (&the_insn, &s);
1630 s = expr_end;
1631 CHECK_FIELD (num, 31, 0, 0);
1632 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
1633
1634 /* Handle an unsigned 5 bit immediate at 15. */
1635 case 'R':
1636 num = pa_get_absolute_expression (&the_insn, &s);
1637 s = expr_end;
1638 CHECK_FIELD (num, 31, 0, 0);
1639 INSERT_FIELD_AND_CONTINUE (opcode, num, 16);
1640
1641 /* Handle a 2 bit space identifier at 17. */
1642 case 's':
1643 num = pa_parse_number (&s, 0);
1644 CHECK_FIELD (num, 3, 0, 1);
1645 INSERT_FIELD_AND_CONTINUE (opcode, num, 14);
1646
1647 /* Handle a 3 bit space identifier at 18. */
1648 case 'S':
1649 num = pa_parse_number (&s, 0);
1650 CHECK_FIELD (num, 7, 0, 1);
1651 dis_assemble_3 (num, &num);
1652 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
1653
1654 /* Handle a completer for an indexing load or store. */
1655 case 'c':
1656 {
1657 int uu = 0;
1658 int m = 0;
1659 int i = 0;
1660 while (*s == ',' && i < 2)
1661 {
1662 s++;
1663 if (strncasecmp (s, "sm", 2) == 0)
1664 {
1665 uu = 1;
1666 m = 1;
1667 s++;
1668 i++;
1669 }
1670 else if (strncasecmp (s, "m", 1) == 0)
1671 m = 1;
1672 else if (strncasecmp (s, "s", 1) == 0)
1673 uu = 1;
1674 else
1675 as_bad (_("Invalid Indexed Load Completer."));
1676 s++;
1677 i++;
1678 }
1679 if (i > 2)
1680 as_bad (_("Invalid Indexed Load Completer Syntax."));
1681 opcode |= m << 5;
1682 INSERT_FIELD_AND_CONTINUE (opcode, uu, 13);
1683 }
1684
1685 /* Handle a short load/store completer. */
1686 case 'C':
1687 {
1688 int a = 0;
1689 int m = 0;
1690 if (*s == ',')
1691 {
1692 s++;
1693 if (strncasecmp (s, "ma", 2) == 0)
1694 {
1695 a = 0;
1696 m = 1;
1697 }
1698 else if (strncasecmp (s, "mb", 2) == 0)
1699 {
1700 a = 1;
1701 m = 1;
1702 }
1703 else
1704 as_bad (_("Invalid Short Load/Store Completer."));
1705 s += 2;
1706 }
1707
1708 if (*args == 'C')
1709 {
1710 opcode |= m << 5;
1711 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1712 }
1713 }
1714
1715 /* Handle a stbys completer. */
1716 case 'Y':
1717 {
1718 int a = 0;
1719 int m = 0;
1720 int i = 0;
1721 while (*s == ',' && i < 2)
1722 {
1723 s++;
1724 if (strncasecmp (s, "m", 1) == 0)
1725 m = 1;
1726 else if (strncasecmp (s, "b", 1) == 0)
1727 a = 0;
1728 else if (strncasecmp (s, "e", 1) == 0)
1729 a = 1;
1730 else
1731 as_bad (_("Invalid Store Bytes Short Completer"));
1732 s++;
1733 i++;
1734 }
1735 if (i > 2)
1736 as_bad (_("Invalid Store Bytes Short Completer"));
1737 opcode |= m << 5;
1738 INSERT_FIELD_AND_CONTINUE (opcode, a, 13);
1739 }
1740
55a914bc 1741 /* Handle all conditions. */
252b5132 1742 case '?':
55a914bc
JL		 1743 {
1744 args++;
1745 switch (*args)
1746 {
1747 /* Handle FP compare conditions. */
1748 case 'f':
1749 cond = pa_parse_fp_cmp_cond (&s);
1750 INSERT_FIELD_AND_CONTINUE (opcode, cond, 0);
1751
1752 /* Handle an add condition. */
9a913dfb 1753 case 'A':
55a914bc
JL		 1754 case 'a':
1755 cmpltr = 0;
1756 flag = 0;
1757 if (*s == ',')
1758 {
1759 s++;
9a913dfb
JL		 1760
1761 /* 64 bit conditions. */
1762 if (*args == 'A')
1763 {
1764 if (*s == '*')
1765 s++;
1766 else
1767 break;
1768 }
17d9105c
JL		 1769 else if (*s == '*')
1770 break;
55a914bc 1771 name = s;
9a913dfb 1772
55a914bc
JL		 1773 while (*s != ',' && *s != ' ' && *s != '\t')
1774 s += 1;
1775 c = *s;
1776 *s = 0x00;
1777 if (strcmp (name, "=") == 0)
1778 cmpltr = 1;
1779 else if (strcmp (name, "<") == 0)
1780 cmpltr = 2;
1781 else if (strcmp (name, "<=") == 0)
1782 cmpltr = 3;
1783 else if (strcasecmp (name, "nuv") == 0)
1784 cmpltr = 4;
1785 else if (strcasecmp (name, "znv") == 0)
1786 cmpltr = 5;
1787 else if (strcasecmp (name, "sv") == 0)
1788 cmpltr = 6;
1789 else if (strcasecmp (name, "od") == 0)
1790 cmpltr = 7;
1791 else if (strcasecmp (name, "tr") == 0)
1792 {
1793 cmpltr = 0;
1794 flag = 1;
1795 }
1796 else if (strcmp (name, "<>") == 0)
1797 {
1798 cmpltr = 1;
1799 flag = 1;
1800 }
1801 else if (strcmp (name, ">=") == 0)
1802 {
1803 cmpltr = 2;
1804 flag = 1;
1805 }
1806 else if (strcmp (name, ">") == 0)
1807 {
1808 cmpltr = 3;
1809 flag = 1;
1810 }
1811 else if (strcasecmp (name, "uv") == 0)
1812 {
1813 cmpltr = 4;
1814 flag = 1;
1815 }
1816 else if (strcasecmp (name, "vnz") == 0)
1817 {
1818 cmpltr = 5;
1819 flag = 1;
1820 }
1821 else if (strcasecmp (name, "nsv") == 0)
1822 {
1823 cmpltr = 6;
1824 flag = 1;
1825 }
1826 else if (strcasecmp (name, "ev") == 0)
1827 {
1828 cmpltr = 7;
1829 flag = 1;
1830 }
9a913dfb
JL		 1831 /* ",*" is a valid condition. */
1832 else if (*args == 'a')
55a914bc
JL		 1833 as_bad (_("Invalid Add Condition: %s"), name);
1834 *s = c;
1835 }
1836 opcode |= cmpltr << 13;
1837 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
252b5132 1838
55a914bc
JL		 1839 /* Handle non-negated add and branch condition. */
1840 case 'd':
1841 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
1842 if (cmpltr < 0)
1843 {
1844 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s);
1845 cmpltr = 0;
1846 }
1847 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
1848
9a913dfb
JL		 1849 /* Handle negated add and branch condition. */
1850 case 'D':
1851 abort ();
1852
1853 /* Handle wide-mode non-negated add and branch condition. */
1854 case 'w':
1855 abort ();
1856
1857 /* Handle wide-mode negated add and branch condition. */
1858 case 'W':
1859 abort();
1860
55a914bc
JL		 1861 /* Handle a negated or non-negated add and branch
1862 condition. */
1863 case '@':
1864 save_s = s;
1865 cmpltr = pa_parse_nonneg_add_cmpltr (&s, 1);
1866 if (cmpltr < 0)
1867 {
1868 s = save_s;
1869 cmpltr = pa_parse_neg_add_cmpltr (&s, 1);
1870 if (cmpltr < 0)
1871 {
1872 as_bad (_("Invalid Compare/Subtract Condition"));
1873 cmpltr = 0;
1874 }
1875 else
1876 {
1877 /* Negated condition requires an opcode change. */
1878 opcode |= 1 << 27;
1879 }
1880 }
1881 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
252b5132 1882
55a914bc 1883 /* Handle branch on bit conditions. */
9a913dfb 1884 case 'B':
55a914bc
JL		 1885 case 'b':
1886 cmpltr = 0;
1887 if (*s == ',')
1888 {
1889 s++;
9a913dfb
JL		 1890
1891 if (*args == 'B')
1892 {
1893 if (*s == '*')
1894 s++;
1895 else
1896 break;
1897 }
17d9105c
JL		 1898 else if (*s == '*')
1899 break;
9a913dfb 1900
55a914bc
JL		 1901 if (strncmp (s, "<", 1) == 0)
1902 {
1903 cmpltr = 0;
1904 s++;
1905 }
1906 else if (strncmp (s, ">=", 2) == 0)
1907 {
1908 cmpltr = 1;
1909 s += 2;
1910 }
1911 else
1912 as_bad (_("Invalid Bit Branch Condition: %c"), *s);
1913 }
1914 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 15);
252b5132 1915
55a914bc 1916 /* Handle a compare/subtract condition. */
9a913dfb 1917 case 'S':
55a914bc
JL		 1918 case 's':
1919 cmpltr = 0;
1920 flag = 0;
1921 if (*s == ',')
1922 {
1923 s++;
9a913dfb
JL		 1924
1925 /* 64 bit conditions. */
1926 if (*args == 'S')
1927 {
1928 if (*s == '*')
1929 s++;
1930 else
1931 break;
1932 }
17d9105c
JL		 1933 else if (*s == '*')
1934 break;
55a914bc 1935 name = s;
9a913dfb 1936
55a914bc
JL		 1937 while (*s != ',' && *s != ' ' && *s != '\t')
1938 s += 1;
1939 c = *s;
1940 *s = 0x00;
1941 if (strcmp (name, "=") == 0)
1942 cmpltr = 1;
1943 else if (strcmp (name, "<") == 0)
1944 cmpltr = 2;
1945 else if (strcmp (name, "<=") == 0)
1946 cmpltr = 3;
1947 else if (strcasecmp (name, "<<") == 0)
1948 cmpltr = 4;
1949 else if (strcasecmp (name, "<<=") == 0)
1950 cmpltr = 5;
1951 else if (strcasecmp (name, "sv") == 0)
1952 cmpltr = 6;
1953 else if (strcasecmp (name, "od") == 0)
1954 cmpltr = 7;
1955 else if (strcasecmp (name, "tr") == 0)
1956 {
1957 cmpltr = 0;
1958 flag = 1;
1959 }
1960 else if (strcmp (name, "<>") == 0)
1961 {
1962 cmpltr = 1;
1963 flag = 1;
1964 }
1965 else if (strcmp (name, ">=") == 0)
1966 {
1967 cmpltr = 2;
1968 flag = 1;
1969 }
1970 else if (strcmp (name, ">") == 0)
1971 {
1972 cmpltr = 3;
1973 flag = 1;
1974 }
1975 else if (strcasecmp (name, ">>=") == 0)
1976 {
1977 cmpltr = 4;
1978 flag = 1;
1979 }
1980 else if (strcasecmp (name, ">>") == 0)
1981 {
1982 cmpltr = 5;
1983 flag = 1;
1984 }
1985 else if (strcasecmp (name, "nsv") == 0)
1986 {
1987 cmpltr = 6;
1988 flag = 1;
1989 }
1990 else if (strcasecmp (name, "ev") == 0)
1991 {
1992 cmpltr = 7;
1993 flag = 1;
1994 }
9a913dfb
JL		 1995 /* ",*" is a valid condition. */
1996 else if (*args != 'S')
55a914bc
JL		 1997 as_bad (_("Invalid Compare/Subtract Condition: %s"),
1998 name);
1999 *s = c;
2000 }
2001 opcode |= cmpltr << 13;
2002 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
252b5132 2003
55a914bc
JL		 2004 /* Handle a non-negated compare condition. */
2005 case 't':
2006 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
2007 if (cmpltr < 0)
2008 {
2009 as_bad (_("Invalid Compare/Subtract Condition: %c"), *s);
2010 cmpltr = 0;
2011 }
2012 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
9a913dfb
JL		 2013
2014 /* Handle a negated compare condition. */
2015 case 'T':
2016 abort ();
2017
2018 /* Handle a 64 bit non-negated compare condition. */
2019 case 'r':
2020 abort ();
2021
2022 /* Handle a 64 bit negated compare condition. */
2023 case 'R':
2024 abort ();
2025
2026 /* Handle a 64 bit cmpib condition. */
2027 case 'Q':
2028 abort ();
55a914bc
JL		 2029
2030 /* Handle a negated or non-negated compare/subtract
2031 condition. */
2032 case 'n':
2033 save_s = s;
2034 cmpltr = pa_parse_nonneg_cmpsub_cmpltr (&s, 1);
2035 if (cmpltr < 0)
2036 {
2037 s = save_s;
2038 cmpltr = pa_parse_neg_cmpsub_cmpltr (&s, 1);
2039 if (cmpltr < 0)
2040 {
2041 as_bad (_("Invalid Compare/Subtract Condition."));
2042 cmpltr = 0;
2043 }
2044 else
2045 {
2046 /* Negated condition requires an opcode change. */
2047 opcode |= 1 << 27;
2048 }
2049 }
2050
2051 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
2052
2053 /* Handle a logical instruction condition. */
9a913dfb 2054 case 'L':
55a914bc
JL		 2055 case 'l':
2056 cmpltr = 0;
2057 flag = 0;
2058 if (*s == ',')
2059 {
2060 s++;
9a913dfb
JL		 2061
2062 /* 64 bit conditions. */
2063 if (*args == 'L')
2064 {
2065 if (*s == '*')
2066 s++;
2067 else
2068 break;
2069 }
17d9105c
JL		 2070 else if (*s == '*')
2071 break;
55a914bc 2072 name = s;
9a913dfb 2073
55a914bc
JL		 2074 while (*s != ',' && *s != ' ' && *s != '\t')
2075 s += 1;
2076 c = *s;
2077 *s = 0x00;
2078
2079
2080 if (strcmp (name, "=") == 0)
2081 cmpltr = 1;
2082 else if (strcmp (name, "<") == 0)
2083 cmpltr = 2;
2084 else if (strcmp (name, "<=") == 0)
2085 cmpltr = 3;
2086 else if (strcasecmp (name, "od") == 0)
2087 cmpltr = 7;
2088 else if (strcasecmp (name, "tr") == 0)
2089 {
2090 cmpltr = 0;
2091 flag = 1;
2092 }
2093 else if (strcmp (name, "<>") == 0)
2094 {
2095 cmpltr = 1;
2096 flag = 1;
2097 }
2098 else if (strcmp (name, ">=") == 0)
2099 {
2100 cmpltr = 2;
2101 flag = 1;
2102 }
2103 else if (strcmp (name, ">") == 0)
2104 {
2105 cmpltr = 3;
2106 flag = 1;
2107 }
2108 else if (strcasecmp (name, "ev") == 0)
2109 {
2110 cmpltr = 7;
2111 flag = 1;
2112 }
9a913dfb
JL		 2113 /* ",*" is a valid condition. */
2114 else if (*args != 'L')
55a914bc
JL		 2115 as_bad (_("Invalid Logical Instruction Condition."));
2116 *s = c;
2117 }
2118 opcode |= cmpltr << 13;
2119 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
2120
2121 /* Handle a shift/extract/deposit condition. */
9a913dfb 2122 case 'X':
55a914bc
JL		 2123 case 'x':
2124 case 'y':
2125 cmpltr = 0;
2126 if (*s == ',')
2127 {
2128 save_s = s++;
2129
9a913dfb
JL		 2130 /* 64 bit conditions. */
2131 if (*args == 'X')
2132 {
2133 if (*s == '*')
2134 s++;
2135 else
2136 break;
2137 }
17d9105c
JL		 2138 else if (*s == '*')
2139 break;
55a914bc 2140 name = s;
9a913dfb 2141
55a914bc
JL		 2142 while (*s != ',' && *s != ' ' && *s != '\t')
2143 s += 1;
2144 c = *s;
2145 *s = 0x00;
2146 if (strcmp (name, "=") == 0)
2147 cmpltr = 1;
2148 else if (strcmp (name, "<") == 0)
2149 cmpltr = 2;
2150 else if (strcasecmp (name, "od") == 0)
2151 cmpltr = 3;
2152 else if (strcasecmp (name, "tr") == 0)
2153 cmpltr = 4;
2154 else if (strcmp (name, "<>") == 0)
2155 cmpltr = 5;
2156 else if (strcmp (name, ">=") == 0)
2157 cmpltr = 6;
2158 else if (strcasecmp (name, "ev") == 0)
2159 cmpltr = 7;
2160 /* Handle movb,n. Put things back the way they were.
2161 This includes moving s back to where it started. */
2162 else if (strcasecmp (name, "n") == 0 && *args == 'y')
2163 {
2164 *s = c;
2165 s = save_s;
2166 continue;
2167 }
9a913dfb
JL		 2168 /* ",*" is a valid condition. */
2169 else if (*args != 'X')
55a914bc
JL		 2170 as_bad (_("Invalid Shift/Extract/Deposit Condition."));
2171 *s = c;
2172 }
2173 INSERT_FIELD_AND_CONTINUE (opcode, cmpltr, 13);
252b5132 2174
55a914bc 2175 /* Handle a unit instruction condition. */
9a913dfb
JL		 2176 case 'U':
2177 case 'u':
55a914bc
JL		 2178 cmpltr = 0;
2179 flag = 0;
2180 if (*s == ',')
2181 {
2182 s++;
2183
9a913dfb
JL		 2184 /* 64 bit conditions. */
2185 if (*args == 'U')
2186 {
2187 if (*s == '*')
2188 s++;
2189 else
2190 break;
2191 }
17d9105c
JL		 2192 else if (*s == '*')
2193 break;
9a913dfb 2194
55a914bc
JL		 2195 if (strncasecmp (s, "sbz", 3) == 0)
2196 {
2197 cmpltr = 2;
2198 s += 3;
2199 }
2200 else if (strncasecmp (s, "shz", 3) == 0)
2201 {
2202 cmpltr = 3;
2203 s += 3;
2204 }
2205 else if (strncasecmp (s, "sdc", 3) == 0)
2206 {
2207 cmpltr = 4;
2208 s += 3;
2209 }
2210 else if (strncasecmp (s, "sbc", 3) == 0)
2211 {
2212 cmpltr = 6;
2213 s += 3;
2214 }
2215 else if (strncasecmp (s, "shc", 3) == 0)
2216 {
2217 cmpltr = 7;
2218 s += 3;
2219 }
2220 else if (strncasecmp (s, "tr", 2) == 0)
2221 {
2222 cmpltr = 0;
2223 flag = 1;
2224 s += 2;
2225 }
2226 else if (strncasecmp (s, "nbz", 3) == 0)
2227 {
2228 cmpltr = 2;
2229 flag = 1;
2230 s += 3;
2231 }
2232 else if (strncasecmp (s, "nhz", 3) == 0)
2233 {
2234 cmpltr = 3;
2235 flag = 1;
2236 s += 3;
2237 }
2238 else if (strncasecmp (s, "ndc", 3) == 0)
2239 {
2240 cmpltr = 4;
2241 flag = 1;
2242 s += 3;
2243 }
2244 else if (strncasecmp (s, "nbc", 3) == 0)
2245 {
2246 cmpltr = 6;
2247 flag = 1;
2248 s += 3;
2249 }
2250 else if (strncasecmp (s, "nhc", 3) == 0)
2251 {
2252 cmpltr = 7;
2253 flag = 1;
2254 s += 3;
2255 }
9a913dfb
JL		 2256 /* ",*" is a valid condition. */
2257 else if (*args != 'U')
55a914bc
JL		 2258 as_bad (_("Invalid Unit Instruction Condition."));
2259 }
2260 opcode |= cmpltr << 13;
2261 INSERT_FIELD_AND_CONTINUE (opcode, flag, 12);
252b5132 2262
55a914bc
JL		 2263 default:
2264 abort ();
2265 }
0741736b 2266 break;
55a914bc 2267 }
252b5132
RH		 2268
2269 /* Handle a system control completer. */
2270 case 'Z':
2271 if (*s == ',' && (*(s + 1) == 'm' || *(s + 1) == 'M'))
2272 {
2273 flag = 1;
2274 s += 2;
2275 }
2276 else
2277 flag = 0;
2278
2279 INSERT_FIELD_AND_CONTINUE (opcode, flag, 5);
2280
2281 /* Handle a nullification completer for branch instructions. */
2282 case 'n':
2283 nullif = pa_parse_nullif (&s);
2284 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 1);
2285
2286 /* Handle a nullification completer for copr and spop insns. */
2287 case 'N':
2288 nullif = pa_parse_nullif (&s);
2289 INSERT_FIELD_AND_CONTINUE (opcode, nullif, 5);
2290
2291
2292 /* Handle a 11 bit immediate at 31. */
2293 case 'i':
2294 the_insn.field_selector = pa_chk_field_selector (&s);
2295 get_expression (s);
2296 s = expr_end;
2297 if (the_insn.exp.X_op == O_constant)
2298 {
2299 num = evaluate_absolute (&the_insn);
2300 CHECK_FIELD (num, 1023, -1024, 0);
2301 low_sign_unext (num, 11, &num);
2302 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2303 }
2304 else
2305 {
2306 if (is_DP_relative (the_insn.exp))
2307 the_insn.reloc = R_HPPA_GOTOFF;
2308 else if (is_PC_relative (the_insn.exp))
2309 the_insn.reloc = R_HPPA_PCREL_CALL;
2310 else
2311 the_insn.reloc = R_HPPA;
2312 the_insn.format = 11;
2313 continue;
2314 }
2315
2316
2317 /* Handle a 14 bit immediate at 31. */
2318 case 'j':
2319 the_insn.field_selector = pa_chk_field_selector (&s);
2320 get_expression (s);
2321 s = expr_end;
2322 if (the_insn.exp.X_op == O_constant)
2323 {
2324 num = evaluate_absolute (&the_insn);
2325 CHECK_FIELD (num, 8191, -8192, 0);
2326 low_sign_unext (num, 14, &num);
2327 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2328 }
2329 else
2330 {
2331 if (is_DP_relative (the_insn.exp))
2332 the_insn.reloc = R_HPPA_GOTOFF;
2333 else if (is_PC_relative (the_insn.exp))
2334 the_insn.reloc = R_HPPA_PCREL_CALL;
2335 else
2336 the_insn.reloc = R_HPPA;
2337 the_insn.format = 14;
2338 continue;
2339 }
2340
2341 /* Handle a 21 bit immediate at 31. */
2342 case 'k':
2343 the_insn.field_selector = pa_chk_field_selector (&s);
2344 get_expression (s);
2345 s = expr_end;
2346 if (the_insn.exp.X_op == O_constant)
2347 {
2348 num = evaluate_absolute (&the_insn);
2349 CHECK_FIELD (num >> 11, 1048575, -1048576, 0);
2350 dis_assemble_21 (num, &num);
2351 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2352 }
2353 else
2354 {
2355 if (is_DP_relative (the_insn.exp))
2356 the_insn.reloc = R_HPPA_GOTOFF;
2357 else if (is_PC_relative (the_insn.exp))
2358 the_insn.reloc = R_HPPA_PCREL_CALL;
2359 else
2360 the_insn.reloc = R_HPPA;
2361 the_insn.format = 21;
2362 continue;
2363 }
2364
2365 /* Handle a 12 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 (!strcmp (S_GET_NAME (the_insn.exp.X_add_symbol), "L$0\001"))
2372 {
2373 unsigned int w1, w, result;
2374
2375 num = evaluate_absolute (&the_insn);
2376 if (num % 4)
2377 {
2378 as_bad (_("Branch to unaligned address"));
2379 break;
2380 }
2381 CHECK_FIELD (num, 8199, -8184, 0);
2382 sign_unext ((num - 8) >> 2, 12, &result);
2383 dis_assemble_12 (result, &w1, &w);
2384 INSERT_FIELD_AND_CONTINUE (opcode, ((w1 << 2) | w), 0);
2385 }
2386 else
2387 {
2388 the_insn.reloc = R_HPPA_PCREL_CALL;
2389 the_insn.format = 12;
2390 the_insn.arg_reloc = last_call_desc.arg_reloc;
2391 memset (&last_call_desc, 0, sizeof (struct call_desc));
2392 s = expr_end;
2393 continue;
2394 }
2395
2396 /* Handle a 17 bit branch displacement. */
2397 case 'W':
2398 the_insn.field_selector = pa_chk_field_selector (&s);
2399 get_expression (s);
2400 s = expr_end;
2401 the_insn.pcrel = 1;
2402 if (!the_insn.exp.X_add_symbol
2403 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2404 "L$0\001"))
2405 {
2406 unsigned int w2, w1, w, result;
2407
2408 num = evaluate_absolute (&the_insn);
2409 if (num % 4)
2410 {
2411 as_bad (_("Branch to unaligned address"));
2412 break;
2413 }
2414 CHECK_FIELD (num, 262143, -262144, 0);
2415
2416 if (the_insn.exp.X_add_symbol)
2417 num -= 8;
2418
2419 sign_unext (num >> 2, 17, &result);
2420 dis_assemble_17 (result, &w1, &w2, &w);
2421 INSERT_FIELD_AND_CONTINUE (opcode,
2422 ((w2 << 2) | (w1 << 16) | w), 0);
2423 }
2424 else
2425 {
2426 the_insn.reloc = R_HPPA_PCREL_CALL;
2427 the_insn.format = 17;
2428 the_insn.arg_reloc = last_call_desc.arg_reloc;
2429 memset (&last_call_desc, 0, sizeof (struct call_desc));
2430 continue;
2431 }
2432
2433 /* Handle an absolute 17 bit branch target. */
2434 case 'z':
2435 the_insn.field_selector = pa_chk_field_selector (&s);
2436 get_expression (s);
2437 s = expr_end;
2438 the_insn.pcrel = 0;
2439 if (!the_insn.exp.X_add_symbol
2440 || !strcmp (S_GET_NAME (the_insn.exp.X_add_symbol),
2441 "L$0\001"))
2442 {
2443 unsigned int w2, w1, w, result;
2444
2445 num = evaluate_absolute (&the_insn);
2446 if (num % 4)
2447 {
2448 as_bad (_("Branch to unaligned address"));
2449 break;
2450 }
2451 CHECK_FIELD (num, 262143, -262144, 0);
2452
2453 if (the_insn.exp.X_add_symbol)
2454 num -= 8;
2455
2456 sign_unext (num >> 2, 17, &result);
2457 dis_assemble_17 (result, &w1, &w2, &w);
2458 INSERT_FIELD_AND_CONTINUE (opcode,
2459 ((w2 << 2) | (w1 << 16) | w), 0);
2460 }
2461 else
2462 {
2463 the_insn.reloc = R_HPPA_ABS_CALL;
2464 the_insn.format = 17;
2465 the_insn.arg_reloc = last_call_desc.arg_reloc;
2466 memset (&last_call_desc, 0, sizeof (struct call_desc));
2467 continue;
2468 }
2469
a97685e9
JL		 2470 /* Handle a 2 bit shift count at 25. */
2471 case '.':
2472 num = pa_get_absolute_expression (&the_insn, &s);
2473 s = expr_end;
2474 CHECK_FIELD (num, 3, 1, 0);
2475 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2476
252b5132
RH		 2477 /* Handle a 5 bit shift count at 26. */
2478 case 'p':
2479 num = pa_get_absolute_expression (&the_insn, &s);
2480 s = expr_end;
2481 CHECK_FIELD (num, 31, 0, 0);
2482 INSERT_FIELD_AND_CONTINUE (opcode, 31 - num, 5);
2483
a97685e9
JL		 2484 /* Handle a 6 bit shift count at 20,22:26. */
2485 case '~':
2486 num = pa_get_absolute_expression (&the_insn, &s);
2487 s = expr_end;
2488 CHECK_FIELD (num, 63, 0, 0);
2489 num = 63 - num;
2490 opcode |= (num & 0x20) << 6;
2491 INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 5);
2492
252b5132
RH		 2493 /* Handle a 5 bit bit position at 26. */
2494 case 'P':
2495 num = pa_get_absolute_expression (&the_insn, &s);
2496 s = expr_end;
2497 CHECK_FIELD (num, 31, 0, 0);
2498 INSERT_FIELD_AND_CONTINUE (opcode, num, 5);
2499
2500 /* Handle a 5 bit immediate at 10. */
2501 case 'Q':
2502
2503 num = pa_get_absolute_expression (&the_insn, &s);
2504 if (the_insn.exp.X_op != O_constant)
2505 break;
2506 s = expr_end;
2507 CHECK_FIELD (num, 31, 0, 0);
2508 INSERT_FIELD_AND_CONTINUE (opcode, num, 21);
2509
a97685e9
JL		 2510 /* Handle a 9 bit immediate at 28. */
2511 case '$':
2512 num = pa_get_absolute_expression (&the_insn, &s);
2513 s = expr_end;
2514 CHECK_FIELD (num, 511, 1, 0);
2515 INSERT_FIELD_AND_CONTINUE (opcode, num, 3);
2516
252b5132
RH		 2517 /* Handle a 13 bit immediate at 18. */
2518 case 'A':
2519 num = pa_get_absolute_expression (&the_insn, &s);
2520 s = expr_end;
2521 CHECK_FIELD (num, 8191, 0, 0);
2522 INSERT_FIELD_AND_CONTINUE (opcode, num, 13);
2523
2524 /* Handle a 26 bit immediate at 31. */
2525 case 'D':
2526 num = pa_get_absolute_expression (&the_insn, &s);
2527 s = expr_end;
2528 CHECK_FIELD (num, 671108864, 0, 0);
2529 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2530
2531 /* Handle a 3 bit SFU identifier at 25. */
2532 case 'f':
2533 if (*s++ != ',')
2534 as_bad (_("Invalid SFU identifier"));
2535 num = pa_get_absolute_expression (&the_insn, &s);
2536 s = expr_end;
2537 CHECK_FIELD (num, 7, 0, 0);
2538 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2539
2540 /* Handle a 20 bit SOP field for spop0. */
2541 case 'O':
2542 num = pa_get_absolute_expression (&the_insn, &s);
2543 s = expr_end;
2544 CHECK_FIELD (num, 1048575, 0, 0);
2545 num = (num & 0x1f) | ((num & 0x000fffe0) << 6);
2546 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2547
2548 /* Handle a 15bit SOP field for spop1. */
2549 case 'o':
2550 num = pa_get_absolute_expression (&the_insn, &s);
2551 s = expr_end;
2552 CHECK_FIELD (num, 32767, 0, 0);
2553 INSERT_FIELD_AND_CONTINUE (opcode, num, 11);
2554
2555 /* Handle a 10bit SOP field for spop3. */
2556 case '0':
2557 num = pa_get_absolute_expression (&the_insn, &s);
2558 s = expr_end;
2559 CHECK_FIELD (num, 1023, 0, 0);
2560 num = (num & 0x1f) | ((num & 0x000003e0) << 6);
2561 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2562
2563 /* Handle a 15 bit SOP field for spop2. */
2564 case '1':
2565 num = pa_get_absolute_expression (&the_insn, &s);
2566 s = expr_end;
2567 CHECK_FIELD (num, 32767, 0, 0);
2568 num = (num & 0x1f) | ((num & 0x00007fe0) << 6);
2569 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2570
2571 /* Handle a 3-bit co-processor ID field. */
2572 case 'u':
2573 if (*s++ != ',')
2574 as_bad (_("Invalid COPR identifier"));
2575 num = pa_get_absolute_expression (&the_insn, &s);
2576 s = expr_end;
2577 CHECK_FIELD (num, 7, 0, 0);
2578 INSERT_FIELD_AND_CONTINUE (opcode, num, 6);
2579
2580 /* Handle a 22bit SOP field for copr. */
2581 case '2':
2582 num = pa_get_absolute_expression (&the_insn, &s);
2583 s = expr_end;
2584 CHECK_FIELD (num, 4194303, 0, 0);
2585 num = (num & 0x1f) | ((num & 0x003fffe0) << 4);
2586 INSERT_FIELD_AND_CONTINUE (opcode, num, 0);
2587
2588
2589 /* Handle a source FP operand format completer. */
2590 case 'F':
2591 flag = pa_parse_fp_format (&s);
2592 the_insn.fpof1 = flag;
2593 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
2594
2595 /* Handle a destination FP operand format completer. */
2596 case 'G':
2597 /* pa_parse_format needs the ',' prefix. */
2598 s--;
2599 flag = pa_parse_fp_format (&s);
2600 the_insn.fpof2 = flag;
2601 INSERT_FIELD_AND_CONTINUE (opcode, flag, 13);
2602
9ecc05f0
JL		 2603 /* Handle a source FP operand format completer at 20. */
2604 case 'I':
2605 flag = pa_parse_fp_format (&s);
2606 the_insn.fpof1 = flag;
2607 INSERT_FIELD_AND_CONTINUE (opcode, flag, 11);
2608
252b5132
RH		 2609 /* Handle L/R register halves like 't'. */
2610 case 'v':
2611 {
2612 struct pa_11_fp_reg_struct result;
2613
2614 pa_parse_number (&s, &result);
2615 CHECK_FIELD (result.number_part, 31, 0, 0);
2616 opcode |= result.number_part;
2617
2618 /* 0x30 opcodes are FP arithmetic operation opcodes
2619 and need to be turned into 0x38 opcodes. This
2620 is not necessary for loads/stores. */
2621 if (need_pa11_opcode (&the_insn, &result)
2622 && ((opcode & 0xfc000000) == 0x30000000))
2623 opcode |= 1 << 27;
2624
2625 INSERT_FIELD_AND_CONTINUE (opcode, result.l_r_select & 1, 6);
2626 }
2627
2628 /* Handle L/R register halves like 'b'. */
2629 case 'E':
2630 {
2631 struct pa_11_fp_reg_struct result;
2632
2633 pa_parse_number (&s, &result);
2634 CHECK_FIELD (result.number_part, 31, 0, 0);
2635 opcode |= result.number_part << 21;
2636 if (need_pa11_opcode (&the_insn, &result))
2637 {
2638 opcode |= (result.l_r_select & 1) << 7;
2639 opcode |= 1 << 27;
2640 }
2641 continue;
2642 }
2643
b53fcc20
JL		 2644 /* Float operand 1 similar to 'b' but with l/r registers. */
2645 case 'J':
2646 {
2647 struct pa_11_fp_reg_struct result;
2648
2649 pa_parse_number (&s, &result);
2650 CHECK_FIELD (result.number_part, 31, 0, 0);
2651 opcode |= result.number_part << 21;
2652 opcode |= (result.l_r_select & 1) << 7;
2653 continue;
2654 }
2655
252b5132
RH		 2656 /* Handle L/R register halves like 'b'. */
2657 case '3':
2658 {
2659 struct pa_11_fp_reg_struct result;
2660 int regnum;
2661
2662 pa_parse_number (&s, &result);
2663 CHECK_FIELD (result.number_part, 31, 0, 0);
2664 opcode |= (result.number_part & 0x1c) << 11;
2665 opcode |= (result.number_part & 0x3) << 9;
2666 opcode |= (result.l_r_select & 1) << 8;
2667 continue;
2668 }
2669
2670 /* Handle L/R register halves like 'x'. */
2671 case 'e':
2672 {
2673 struct pa_11_fp_reg_struct result;
2674
2675 pa_parse_number (&s, &result);
2676 CHECK_FIELD (result.number_part, 31, 0, 0);
2677 opcode |= (result.number_part & 0x1f) << 16;
2678 if (need_pa11_opcode (&the_insn, &result))
2679 {
2680 opcode |= (result.l_r_select & 1) << 1;
2681 }
2682 continue;
2683 }
2684
2685 /* Handle L/R register halves like 'x'. */
2686 case 'X':
2687 {
2688 struct pa_11_fp_reg_struct result;
2689
2690 pa_parse_number (&s, &result);
2691 CHECK_FIELD (result.number_part, 31, 0, 0);
2692 opcode |= (result.number_part & 0x1f) << 16;
2693 if (need_pa11_opcode (&the_insn, &result))
2694 {
2695 opcode |= (result.l_r_select & 1) << 12;
2696 opcode |= 1 << 27;
2697 }
2698 continue;
2699 }
2700
b53fcc20
JL		 2701 /* Float operand 2, like 'x' but with l/r register halves. */
2702 case 'K':
2703 {
2704 struct pa_11_fp_reg_struct result;
2705
2706 pa_parse_number (&s, &result);
2707 CHECK_FIELD (result.number_part, 31, 0, 0);
2708 opcode |= (result.number_part & 0x1f) << 16;
2709 opcode |= (result.l_r_select & 1) << 12;
2710 continue;
2711 }
2712
252b5132
RH		 2713 /* Handle a 5 bit register field at 10. */
2714 case '4':
2715 {
2716 struct pa_11_fp_reg_struct result;
2717
2718 pa_parse_number (&s, &result);
2719 CHECK_FIELD (result.number_part, 31, 0, 0);
2720 if (the_insn.fpof1 == SGL)
2721 {
2722 if (result.number_part < 16)
2723 {
2724 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2725 break;
2726 }
2727
2728 result.number_part &= 0xF;
2729 result.number_part |= (result.l_r_select & 1) << 4;
2730 }
2731 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 21);
2732 }
2733
2734 /* Handle a 5 bit register field at 15. */
2735 case '6':
2736 {
2737 struct pa_11_fp_reg_struct result;
2738
2739 pa_parse_number (&s, &result);
2740 CHECK_FIELD (result.number_part, 31, 0, 0);
2741 if (the_insn.fpof1 == SGL)
2742 {
2743 if (result.number_part < 16)
2744 {
2745 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2746 break;
2747 }
2748 result.number_part &= 0xF;
2749 result.number_part |= (result.l_r_select & 1) << 4;
2750 }
2751 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 16);
2752 }
2753
2754 /* Handle a 5 bit register field at 31. */
2755 case '7':
2756 {
2757 struct pa_11_fp_reg_struct result;
2758
2759 pa_parse_number (&s, &result);
2760 CHECK_FIELD (result.number_part, 31, 0, 0);
2761 if (the_insn.fpof1 == SGL)
2762 {
2763 if (result.number_part < 16)
2764 {
2765 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2766 break;
2767 }
2768 result.number_part &= 0xF;
2769 result.number_part |= (result.l_r_select & 1) << 4;
2770 }
2771 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 0);
2772 }
2773
2774 /* Handle a 5 bit register field at 20. */
2775 case '8':
2776 {
2777 struct pa_11_fp_reg_struct result;
2778
2779 pa_parse_number (&s, &result);
2780 CHECK_FIELD (result.number_part, 31, 0, 0);
2781 if (the_insn.fpof1 == SGL)
2782 {
2783 if (result.number_part < 16)
2784 {
2785 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2786 break;
2787 }
2788 result.number_part &= 0xF;
2789 result.number_part |= (result.l_r_select & 1) << 4;
2790 }
2791 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 11);
2792 }
2793
2794 /* Handle a 5 bit register field at 25. */
2795 case '9':
2796 {
2797 struct pa_11_fp_reg_struct result;
2798
2799 pa_parse_number (&s, &result);
2800 CHECK_FIELD (result.number_part, 31, 0, 0);
2801 if (the_insn.fpof1 == SGL)
2802 {
2803 if (result.number_part < 16)
2804 {
2805 as_bad (_("Invalid register for single precision fmpyadd or fmpysub"));
2806 break;
2807 }
2808 result.number_part &= 0xF;
2809 result.number_part |= (result.l_r_select & 1) << 4;
2810 }
2811 INSERT_FIELD_AND_CONTINUE (opcode, result.number_part, 6);
2812 }
2813
2814 /* Handle a floating point operand format at 26.
2815 Only allows single and double precision. */
2816 case 'H':
2817 flag = pa_parse_fp_format (&s);
2818 switch (flag)
2819 {
2820 case SGL:
2821 opcode |= 0x20;
2822 case DBL:
2823 the_insn.fpof1 = flag;
2824 continue;
2825
2826 case QUAD:
2827 case ILLEGAL_FMT:
2828 default:
2829 as_bad (_("Invalid Floating Point Operand Format."));
2830 }
2831 break;
2832
2833 default:
2834 abort ();
2835 }
2836 break;
2837 }
2838
2839 failed:
2840 /* Check if the args matched. */
2841 if (match == FALSE)
2842 {
2843 if (&insn[1] - pa_opcodes < (int) NUMOPCODES
2844 && !strcmp (insn->name, insn[1].name))
2845 {
2846 ++insn;
2847 s = argstart;
2848 continue;
2849 }
2850 else
2851 {
2852 as_bad (_("Invalid operands %s"), error_message);
2853 return;
2854 }
2855 }
2856 break;
2857 }
2858
2859 the_insn.opcode = opcode;
2860}
2861
2862/* Turn a string in input_line_pointer into a floating point constant of type
2863 type, and store the appropriate bytes in *litP. The number of LITTLENUMS
2864 emitted is stored in *sizeP . An error message or NULL is returned. */
2865
2866#define MAX_LITTLENUMS 6
2867
2868char *
2869md_atof (type, litP, sizeP)
2870 char type;
2871 char *litP;
2872 int *sizeP;
2873{
2874 int prec;
2875 LITTLENUM_TYPE words[MAX_LITTLENUMS];
2876 LITTLENUM_TYPE *wordP;
2877 char *t;
2878
2879 switch (type)
2880 {
2881
2882 case 'f':
2883 case 'F':
2884 case 's':
2885 case 'S':
2886 prec = 2;
2887 break;
2888
2889 case 'd':
2890 case 'D':
2891 case 'r':
2892 case 'R':
2893 prec = 4;
2894 break;
2895
2896 case 'x':
2897 case 'X':
2898 prec = 6;
2899 break;
2900
2901 case 'p':
2902 case 'P':
2903 prec = 6;
2904 break;
2905
2906 default:
2907 *sizeP = 0;
2908 return _("Bad call to MD_ATOF()");
2909 }
2910 t = atof_ieee (input_line_pointer, type, words);
2911 if (t)
2912 input_line_pointer = t;
2913 *sizeP = prec * sizeof (LITTLENUM_TYPE);
2914 for (wordP = words; prec--;)
2915 {
2916 md_number_to_chars (litP, (valueT) (*wordP++), sizeof (LITTLENUM_TYPE));
2917 litP += sizeof (LITTLENUM_TYPE);
2918 }
2919 return NULL;
2920}
2921
2922/* Write out big-endian. */
2923
2924void
2925md_number_to_chars (buf, val, n)
2926 char *buf;
2927 valueT val;
2928 int n;
2929{
2930 number_to_chars_bigendian (buf, val, n);
2931}
2932
2933/* Translate internal representation of relocation info to BFD target
2934 format. */
2935
2936arelent **
2937tc_gen_reloc (section, fixp)
2938 asection *section;
2939 fixS *fixp;
2940{
2941 arelent *reloc;
2942 struct hppa_fix_struct *hppa_fixp;
2943 bfd_reloc_code_real_type code;
2944 static arelent *no_relocs = NULL;
2945 arelent **relocs;
2946 bfd_reloc_code_real_type **codes;
2947 int n_relocs;
2948 int i;
2949
2950 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
2951 if (fixp->fx_addsy == 0)
2952 return &no_relocs;
2953 assert (hppa_fixp != 0);
2954 assert (section != 0);
2955
2956 reloc = (arelent *) xmalloc (sizeof (arelent));
2957
a0f75b47
ILT		 2958 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2959 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 2960 codes = (bfd_reloc_code_real_type **) hppa_gen_reloc_type (stdoutput,
2961 fixp->fx_r_type,
2962 hppa_fixp->fx_r_format,
2963 hppa_fixp->fx_r_field,
2964 fixp->fx_subsy != NULL,
a0f75b47 2965 symbol_get_bfdsym (fixp->fx_addsy));
252b5132
RH		 2966
2967 if (codes == NULL)
2968 abort ();
2969
2970 for (n_relocs = 0; codes[n_relocs]; n_relocs++)
2971 ;
2972
2973 relocs = (arelent **) xmalloc (sizeof (arelent *) * n_relocs + 1);
2974 reloc = (arelent *) xmalloc (sizeof (arelent) * n_relocs);
2975 for (i = 0; i < n_relocs; i++)
2976 relocs[i] = &reloc[i];
2977
2978 relocs[n_relocs] = NULL;
2979
2980#ifdef OBJ_ELF
2981 switch (fixp->fx_r_type)
2982 {
2983 default:
2984 assert (n_relocs == 1);
2985
2986 code = *codes[0];
2987
a0f75b47
ILT		 2988 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
2989 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 2990 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
2991 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
2992 reloc->addend = 0; /* default */
2993
2994 assert (reloc->howto && code == reloc->howto->type);
2995
2996 /* Now, do any processing that is dependent on the relocation type. */
2997 switch (code)
2998 {
2999 case R_PARISC_DLTREL21L:
3000 case R_PARISC_DLTREL14R:
3001 case R_PARISC_DLTREL14F:
3002 case R_PARISC_PLABEL32:
3003 case R_PARISC_PLABEL21L:
3004 case R_PARISC_PLABEL14R:
3005 /* For plabel relocations, the addend of the
3006 relocation should be either 0 (no static link) or 2
3007 (static link required).
3008
3009 FIXME: We always assume no static link!
3010
3011 We also slam a zero addend into the DLT relative relocs;
3012 it doesn't make a lot of sense to use any addend since
3013 it gets you a different (eg unknown) DLT entry. */
3014 reloc->addend = 0;
3015 break;
3016
3017 case R_PARISC_PCREL21L:
3018 case R_PARISC_PCREL17R:
3019 case R_PARISC_PCREL17F:
3020 case R_PARISC_PCREL17C:
3021 case R_PARISC_PCREL14R:
3022 case R_PARISC_PCREL14F:
3023 /* The constant is stored in the instruction. */
3024 reloc->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
3025 break;
3026 default:
3027 reloc->addend = fixp->fx_offset;
3028 break;
3029 }
3030 break;
3031 }
3032#else /* OBJ_SOM */
3033
3034 /* Walk over reach relocation returned by the BFD backend. */
3035 for (i = 0; i < n_relocs; i++)
3036 {
3037 code = *codes[i];
3038
398e8c25
ILT		 3039 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3040 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 3041 relocs[i]->howto = bfd_reloc_type_lookup (stdoutput, code);
3042 relocs[i]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3043
3044 switch (code)
3045 {
3046 case R_COMP2:
3047 /* The only time we ever use a R_COMP2 fixup is for the difference
3048 of two symbols. With that in mind we fill in all four
3049 relocs now and break out of the loop. */
3050 assert (i == 1);
993142d5 3051 relocs[0]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
252b5132
RH		 3052 relocs[0]->howto = bfd_reloc_type_lookup (stdoutput, *codes[0]);
3053 relocs[0]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3054 relocs[0]->addend = 0;
993142d5
ILT		 3055 relocs[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3056 *relocs[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 3057 relocs[1]->howto = bfd_reloc_type_lookup (stdoutput, *codes[1]);
3058 relocs[1]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3059 relocs[1]->addend = 0;
993142d5
ILT		 3060 relocs[2]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3061 *relocs[2]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy);
252b5132
RH		 3062 relocs[2]->howto = bfd_reloc_type_lookup (stdoutput, *codes[2]);
3063 relocs[2]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3064 relocs[2]->addend = 0;
993142d5 3065 relocs[3]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
252b5132
RH		 3066 relocs[3]->howto = bfd_reloc_type_lookup (stdoutput, *codes[3]);
3067 relocs[3]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3068 relocs[3]->addend = 0;
993142d5 3069 relocs[4]->sym_ptr_ptr = (asymbol **) &(bfd_abs_symbol);
252b5132
RH		 3070 relocs[4]->howto = bfd_reloc_type_lookup (stdoutput, *codes[4]);
3071 relocs[4]->address = fixp->fx_frag->fr_address + fixp->fx_where;
3072 relocs[4]->addend = 0;
3073 goto done;
3074 case R_PCREL_CALL:
3075 case R_ABS_CALL:
3076 relocs[i]->addend = HPPA_R_ADDEND (hppa_fixp->fx_arg_reloc, 0);
3077 break;
3078
3079 case R_DLT_REL:
3080 case R_DATA_PLABEL:
3081 case R_CODE_PLABEL:
3082 /* For plabel relocations, the addend of the
3083 relocation should be either 0 (no static link) or 2
3084 (static link required).
3085
3086 FIXME: We always assume no static link!
3087
3088 We also slam a zero addend into the DLT relative relocs;
3089 it doesn't make a lot of sense to use any addend since
3090 it gets you a different (eg unknown) DLT entry. */
3091 relocs[i]->addend = 0;
3092 break;
3093
3094 case R_N_MODE:
3095 case R_S_MODE:
3096 case R_D_MODE:
3097 case R_R_MODE:
3098 case R_FSEL:
3099 case R_LSEL:
3100 case R_RSEL:
3101 case R_BEGIN_BRTAB:
3102 case R_END_BRTAB:
3103 case R_BEGIN_TRY:
3104 case R_N0SEL:
3105 case R_N1SEL:
3106 /* There is no symbol or addend associated with these fixups. */
993142d5
ILT		 3107 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3108 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
252b5132
RH		 3109 relocs[i]->addend = 0;
3110 break;
3111
3112 case R_END_TRY:
3113 case R_ENTRY:
3114 case R_EXIT:
3115 /* There is no symbol associated with these fixups. */
993142d5
ILT		 3116 relocs[i]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
3117 *relocs[i]->sym_ptr_ptr = symbol_get_bfdsym (dummy_symbol);
252b5132
RH		 3118 relocs[i]->addend = fixp->fx_offset;
3119 break;
3120
3121 default:
3122 relocs[i]->addend = fixp->fx_offset;
3123 }
3124 }
3125
3126 done:
3127#endif
3128
3129 return relocs;
3130}
3131
3132/* Process any machine dependent frag types. */
3133
3134void
3135md_convert_frag (abfd, sec, fragP)
3136 register bfd *abfd;
3137 register asection *sec;
3138 register fragS *fragP;
3139{
3140 unsigned int address;
3141
3142 if (fragP->fr_type == rs_machine_dependent)
3143 {
3144 switch ((int) fragP->fr_subtype)
3145 {
3146 case 0:
3147 fragP->fr_type = rs_fill;
3148 know (fragP->fr_var == 1);
3149 know (fragP->fr_next);
3150 address = fragP->fr_address + fragP->fr_fix;
3151 if (address % fragP->fr_offset)
3152 {
3153 fragP->fr_offset =
3154 fragP->fr_next->fr_address
3155 - fragP->fr_address
3156 - fragP->fr_fix;
3157 }
3158 else
3159 fragP->fr_offset = 0;
3160 break;
3161 }
3162 }
3163}
3164
3165/* Round up a section size to the appropriate boundary. */
3166
3167valueT
3168md_section_align (segment, size)
3169 asection *segment;
3170 valueT size;
3171{
3172 int align = bfd_get_section_alignment (stdoutput, segment);
3173 int align2 = (1 << align) - 1;
3174
3175 return (size + align2) & ~align2;
3176}
3177
3178/* Return the approximate size of a frag before relaxation has occurred. */
3179int
3180md_estimate_size_before_relax (fragP, segment)
3181 register fragS *fragP;
3182 asection *segment;
3183{
3184 int size;
3185
3186 size = 0;
3187
3188 while ((fragP->fr_fix + size) % fragP->fr_offset)
3189 size++;
3190
3191 return size;
3192}
3193\f
3194CONST char *md_shortopts = "";
3195struct option md_longopts[] = {
3196 {NULL, no_argument, NULL, 0}
3197};
3198size_t md_longopts_size = sizeof(md_longopts);
3199
3200int
3201md_parse_option (c, arg)
3202 int c;
3203 char *arg;
3204{
3205 return 0;
3206}
3207
3208void
3209md_show_usage (stream)
3210 FILE *stream;
3211{
3212}
3213\f
3214/* We have no need to default values of symbols. */
3215
3216symbolS *
3217md_undefined_symbol (name)
3218 char *name;
3219{
3220 return 0;
3221}
3222
3223/* Apply a fixup to an instruction. */
3224
3225int
3226md_apply_fix (fixP, valp)
3227 fixS *fixP;
3228 valueT *valp;
3229{
3230 char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
3231 struct hppa_fix_struct *hppa_fixP;
3232 long new_val, result = 0;
3233 unsigned int w1, w2, w, resulti;
3234
3235 hppa_fixP = (struct hppa_fix_struct *) fixP->tc_fix_data;
3236 /* SOM uses R_HPPA_ENTRY and R_HPPA_EXIT relocations which can
3237 never be "applied" (they are just markers). Likewise for
3238 R_HPPA_BEGIN_BRTAB and R_HPPA_END_BRTAB. */
3239#ifdef OBJ_SOM
3240 if (fixP->fx_r_type == R_HPPA_ENTRY
3241 || fixP->fx_r_type == R_HPPA_EXIT
3242 || fixP->fx_r_type == R_HPPA_BEGIN_BRTAB
3243 || fixP->fx_r_type == R_HPPA_END_BRTAB
3244 || fixP->fx_r_type == R_HPPA_BEGIN_TRY)
3245 return 1;
3246
3247 /* Disgusting. We must set fx_offset ourselves -- R_HPPA_END_TRY
3248 fixups are considered not adjustable, which in turn causes
3249 adjust_reloc_syms to not set fx_offset. Ugh. */
3250 if (fixP->fx_r_type == R_HPPA_END_TRY)
3251 {
3252 fixP->fx_offset = *valp;
3253 return 1;
3254 }
3255#endif
3256
3257 /* There should have been an HPPA specific fixup associated
3258 with the GAS fixup. */
3259 if (hppa_fixP)
3260 {
3261 unsigned long buf_wd = bfd_get_32 (stdoutput, buf);
3262 unsigned char fmt = bfd_hppa_insn2fmt (buf_wd);
3263
3264 /* If there is a symbol associated with this fixup, then it's something
3265 which will need a SOM relocation (except for some PC-relative relocs).
3266 In such cases we should treat the "val" or "addend" as zero since it
3267 will be added in as needed from fx_offset in tc_gen_reloc. */
3268 if ((fixP->fx_addsy != NULL
3269 || fixP->fx_r_type == R_HPPA_NONE)
3270#ifdef OBJ_SOM
3271 && fmt != 32
3272#endif
3273 )
90700a53 3274 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
252b5132
RH		 3275#ifdef OBJ_SOM
3276 /* These field selectors imply that we do not want an addend. */
3277 else if (hppa_fixP->fx_r_field == e_psel
3278 || hppa_fixP->fx_r_field == e_rpsel
3279 || hppa_fixP->fx_r_field == e_lpsel
3280 || hppa_fixP->fx_r_field == e_tsel
3281 || hppa_fixP->fx_r_field == e_rtsel
3282 || hppa_fixP->fx_r_field == e_ltsel)
90700a53 3283 new_val = ((fmt == 12 || fmt == 17 || fmt == 22) ? 8 : 0);
252b5132
RH		 3284 /* This is truely disgusting. The machine independent code blindly
3285 adds in the value of the symbol being relocated against. Damn! */
3286 else if (fmt == 32
3287 && fixP->fx_addsy != NULL
3288 && S_GET_SEGMENT (fixP->fx_addsy) != bfd_com_section_ptr)
3289 new_val = hppa_field_adjust (*valp - S_GET_VALUE (fixP->fx_addsy),
3290 0, hppa_fixP->fx_r_field);
3291#endif
3292 else
3293 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3294
3295 /* Handle pc-relative exceptions from above. */
3296#define arg_reloc_stub_needed(CALLER, CALLEE) \
3297 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
90700a53 3298 if ((fmt == 12 || fmt == 17 || fmt == 22)
252b5132
RH		 3299 && fixP->fx_addsy
3300 && fixP->fx_pcrel
49863f82 3301#ifdef OBJ_SOM
252b5132 3302 && !arg_reloc_stub_needed ((long) ((obj_symbol_type *)
a0f75b47
ILT		 3303 symbol_get_bfdsym (fixP->fx_addsy))->tc_data.ap.hppa_arg_reloc,
3304 hppa_fixP->fx_arg_reloc)
49863f82 3305#endif
90700a53 3306 && (((int)(*valp) > -262144 && (int)(*valp) < 262143) && fmt != 22)
252b5132
RH		 3307 && S_GET_SEGMENT (fixP->fx_addsy) == hppa_fixP->segment
3308 && !(fixP->fx_subsy
3309 && S_GET_SEGMENT (fixP->fx_subsy) != hppa_fixP->segment))
3310
3311 new_val = hppa_field_adjust (*valp, 0, hppa_fixP->fx_r_field);
3312#undef arg_reloc_stub_needed
3313
3314 switch (fmt)
3315 {
3316 /* Handle all opcodes with the 'j' operand type. */
3317 case 14:
3318 CHECK_FIELD (new_val, 8191, -8192, 0);
3319
3320 /* Mask off 14 bits to be changed. */
3321 bfd_put_32 (stdoutput,
3322 bfd_get_32 (stdoutput, buf) & 0xffffc000,
3323 buf);
3324 low_sign_unext (new_val, 14, &resulti);
3325 result = resulti;
3326 break;
3327
3328 /* Handle all opcodes with the 'k' operand type. */
3329 case 21:
3330 CHECK_FIELD (new_val, 2097152, 0, 0);
3331
3332 /* Mask off 21 bits to be changed. */
3333 bfd_put_32 (stdoutput,
3334 bfd_get_32 (stdoutput, buf) & 0xffe00000,
3335 buf);
3336 dis_assemble_21 (new_val, &resulti);
3337 result = resulti;
3338 break;
3339
3340 /* Handle all the opcodes with the 'i' operand type. */
3341 case 11:
3342 CHECK_FIELD (new_val, 1023, -1023, 0);
3343
3344 /* Mask off 11 bits to be changed. */
3345 bfd_put_32 (stdoutput,
3346 bfd_get_32 (stdoutput, buf) & 0xffff800,
3347 buf);
3348 low_sign_unext (new_val, 11, &resulti);
3349 result = resulti;
3350 break;
3351
3352 /* Handle all the opcodes with the 'w' operand type. */
3353 case 12:
3354 CHECK_FIELD (new_val, 8199, -8184, 0);
3355
3356 /* Mask off 11 bits to be changed. */
3357 sign_unext ((new_val - 8) >> 2, 12, &resulti);
3358 bfd_put_32 (stdoutput,
3359 bfd_get_32 (stdoutput, buf) & 0xffffe002,
3360 buf);
3361
3362 dis_assemble_12 (resulti, &w1, &w);
3363 result = ((w1 << 2) | w);
3364 break;
3365
3366 /* Handle some of the opcodes with the 'W' operand type. */
3367 case 17:
3368 {
3369 int distance = *valp;
3370
3371 CHECK_FIELD (new_val, 262143, -262144, 0);
3372
3373 /* If this is an absolute branch (ie no link) with an out of
3374 range target, then we want to complain. */
3375 if (fixP->fx_r_type == R_HPPA_PCREL_CALL
3376 && (distance > 262143 || distance < -262144)
3377 && (bfd_get_32 (stdoutput, buf) & 0xffe00000) == 0xe8000000)
3378 CHECK_FIELD (distance, 262143, -262144, 0);
3379
3380 /* Mask off 17 bits to be changed. */
3381 bfd_put_32 (stdoutput,
3382 bfd_get_32 (stdoutput, buf) & 0xffe0e002,
3383 buf);
3384 sign_unext ((new_val - 8) >> 2, 17, &resulti);
3385 dis_assemble_17 (resulti, &w1, &w2, &w);
3386 result = ((w2 << 2) | (w1 << 16) | w);
3387 break;
3388 }
3389
3390 case 32:
3391 result = 0;
3392 bfd_put_32 (stdoutput, new_val, buf);
3393 break;
3394
3395 default:
3396 as_bad (_("Unknown relocation encountered in md_apply_fix."));
3397 return 0;
3398 }
3399
3400 /* Insert the relocation. */
3401 bfd_put_32 (stdoutput, bfd_get_32 (stdoutput, buf) | result, buf);
3402 return 1;
3403 }
3404 else
3405 {
3406 printf (_("no hppa_fixup entry for this fixup (fixP = 0x%x, type = 0x%x)\n"),
3407 (unsigned int) fixP, fixP->fx_r_type);
3408 return 0;
3409 }
3410}
3411
3412/* Exactly what point is a PC-relative offset relative TO?
3413 On the PA, they're relative to the address of the offset. */
3414
3415long
3416md_pcrel_from (fixP)
3417 fixS *fixP;
3418{
3419 return fixP->fx_where + fixP->fx_frag->fr_address;
3420}
3421
3422/* Return nonzero if the input line pointer is at the end of
3423 a statement. */
3424
3425static int
3426is_end_of_statement ()
3427{
3428 return ((*input_line_pointer == '\n')
3429 || (*input_line_pointer == ';')
3430 || (*input_line_pointer == '!'));
3431}
3432
3433/* Read a number from S. The number might come in one of many forms,
3434 the most common will be a hex or decimal constant, but it could be
3435 a pre-defined register (Yuk!), or an absolute symbol.
3436
3437 Return a number or -1 for failure.
3438
3439 When parsing PA-89 FP register numbers RESULT will be
3440 the address of a structure to return information about
3441 L/R half of FP registers, store results there as appropriate.
3442
3443 pa_parse_number can not handle negative constants and will fail
3444 horribly if it is passed such a constant. */
3445
3446static int
3447pa_parse_number (s, result)
3448 char **s;
3449 struct pa_11_fp_reg_struct *result;
3450{
3451 int num;
3452 char *name;
3453 char c;
3454 symbolS *sym;
3455 int status;
3456 char *p = *s;
3457
3458 /* Skip whitespace before the number. */
3459 while (*p == ' ' || *p == '\t')
3460 p = p + 1;
3461
3462 /* Store info in RESULT if requested by caller. */
3463 if (result)
3464 {
3465 result->number_part = -1;
3466 result->l_r_select = -1;
3467 }
3468 num = -1;
3469
3470 if (isdigit (*p))
3471 {
3472 /* Looks like a number. */
3473 num = 0;
3474
3475 if (*p == '0' && (*(p + 1) == 'x' || *(p + 1) == 'X'))
3476 {
3477 /* The number is specified in hex. */
3478 p += 2;
3479 while (isdigit (*p) || ((*p >= 'a') && (*p <= 'f'))
3480 || ((*p >= 'A') && (*p <= 'F')))
3481 {
3482 if (isdigit (*p))
3483 num = num * 16 + *p - '0';
3484 else if (*p >= 'a' && *p <= 'f')
3485 num = num * 16 + *p - 'a' + 10;
3486 else
3487 num = num * 16 + *p - 'A' + 10;
3488 ++p;
3489 }
3490 }
3491 else
3492 {
3493 /* The number is specified in decimal. */
3494 while (isdigit (*p))
3495 {
3496 num = num * 10 + *p - '0';
3497 ++p;
3498 }
3499 }
3500
3501 /* Store info in RESULT if requested by the caller. */
3502 if (result)
3503 {
3504 result->number_part = num;
3505
3506 if (IS_R_SELECT (p))
3507 {
3508 result->l_r_select = 1;
3509 ++p;
3510 }
3511 else if (IS_L_SELECT (p))
3512 {
3513 result->l_r_select = 0;
3514 ++p;
3515 }
3516 else
3517 result->l_r_select = 0;
3518 }
3519 }
3520 else if (*p == '%')
3521 {
3522 /* The number might be a predefined register. */
3523 num = 0;
3524 name = p;
3525 p++;
3526 c = *p;
3527 /* Tege hack: Special case for general registers as the general
3528 code makes a binary search with case translation, and is VERY
3529 slow. */
3530 if (c == 'r')
3531 {
3532 p++;
3533 if (*p == 'e' && *(p + 1) == 't'
3534 && (*(p + 2) == '0' || *(p + 2) == '1'))
3535 {
3536 p += 2;
3537 num = *p - '0' + 28;
3538 p++;
3539 }
3540 else if (*p == 'p')
3541 {
3542 num = 2;
3543 p++;
3544 }
3545 else if (!isdigit (*p))
3546 {
3547 if (print_errors)
3548 as_bad (_("Undefined register: '%s'."), name);
3549 num = -1;
3550 }
3551 else
3552 {
3553 do
3554 num = num * 10 + *p++ - '0';
3555 while (isdigit (*p));
3556 }
3557 }
3558 else
3559 {
3560 /* Do a normal register search. */
3561 while (is_part_of_name (c))
3562 {
3563 p = p + 1;
3564 c = *p;
3565 }
3566 *p = 0;
3567 status = reg_name_search (name);
3568 if (status >= 0)
3569 num = status;
3570 else
3571 {
3572 if (print_errors)
3573 as_bad (_("Undefined register: '%s'."), name);
3574 num = -1;
3575 }
3576 *p = c;
3577 }
3578
3579 /* Store info in RESULT if requested by caller. */
3580 if (result)
3581 {
3582 result->number_part = num;
3583 if (IS_R_SELECT (p - 1))
3584 result->l_r_select = 1;
3585 else if (IS_L_SELECT (p - 1))
3586 result->l_r_select = 0;
3587 else
3588 result->l_r_select = 0;
3589 }
3590 }
3591 else
3592 {
3593 /* And finally, it could be a symbol in the absolute section which
3594 is effectively a constant. */
3595 num = 0;
3596 name = p;
3597 c = *p;
3598 while (is_part_of_name (c))
3599 {
3600 p = p + 1;
3601 c = *p;
3602 }
3603 *p = 0;
3604 if ((sym = symbol_find (name)) != NULL)
3605 {
3606 if (S_GET_SEGMENT (sym) == &bfd_abs_section)
3607 num = S_GET_VALUE (sym);
3608 else
3609 {
3610 if (print_errors)
3611 as_bad (_("Non-absolute symbol: '%s'."), name);
3612 num = -1;
3613 }
3614 }
3615 else
3616 {
3617 /* There is where we'd come for an undefined symbol
3618 or for an empty string. For an empty string we
3619 will return zero. That's a concession made for
3620 compatability with the braindamaged HP assemblers. */
3621 if (*name == 0)
3622 num = 0;
3623 else
3624 {
3625 if (print_errors)
3626 as_bad (_("Undefined absolute constant: '%s'."), name);
3627 num = -1;
3628 }
3629 }
3630 *p = c;
3631
3632 /* Store info in RESULT if requested by caller. */
3633 if (result)
3634 {
3635 result->number_part = num;
3636 if (IS_R_SELECT (p - 1))
3637 result->l_r_select = 1;
3638 else if (IS_L_SELECT (p - 1))
3639 result->l_r_select = 0;
3640 else
3641 result->l_r_select = 0;
3642 }
3643 }
3644
3645 *s = p;
3646 return num;
3647}
3648
3649#define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg))
3650
3651/* Given NAME, find the register number associated with that name, return
3652 the integer value associated with the given name or -1 on failure. */
3653
3654static int
3655reg_name_search (name)
3656 char *name;
3657{
3658 int middle, low, high;
3659 int cmp;
3660
3661 low = 0;
3662 high = REG_NAME_CNT - 1;
3663
3664 do
3665 {
3666 middle = (low + high) / 2;
3667 cmp = strcasecmp (name, pre_defined_registers[middle].name);
3668 if (cmp < 0)
3669 high = middle - 1;
3670 else if (cmp > 0)
3671 low = middle + 1;
3672 else
3673 return pre_defined_registers[middle].value;
3674 }
3675 while (low <= high);
3676
3677 return -1;
3678}
3679
3680
3681/* Return nonzero if the given INSN and L/R information will require
3682 a new PA-1.1 opcode. */
3683
3684static int
3685need_pa11_opcode (insn, result)
3686 struct pa_it *insn;
3687 struct pa_11_fp_reg_struct *result;
3688{
3689 if (result->l_r_select == 1 && !(insn->fpof1 == DBL && insn->fpof2 == DBL))
3690 {
3691 /* If this instruction is specific to a particular architecture,
3692 then set a new architecture. */
3693 if (bfd_get_mach (stdoutput) < pa11)
3694 {
3695 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, pa11))
3696 as_warn (_("could not update architecture and machine"));
3697 }
3698 return TRUE;
3699 }
3700 else
3701 return FALSE;
3702}
3703
3704/* Parse a condition for a fcmp instruction. Return the numerical
3705 code associated with the condition. */
3706
3707static int
3708pa_parse_fp_cmp_cond (s)
3709 char **s;
3710{
3711 int cond, i;
3712
3713 cond = 0;
3714
3715 for (i = 0; i < 32; i++)
3716 {
3717 if (strncasecmp (*s, fp_cond_map[i].string,
3718 strlen (fp_cond_map[i].string)) == 0)
3719 {
3720 cond = fp_cond_map[i].cond;
3721 *s += strlen (fp_cond_map[i].string);
3722 /* If not a complete match, back up the input string and
3723 report an error. */
3724 if (**s != ' ' && **s != '\t')
3725 {
3726 *s -= strlen (fp_cond_map[i].string);
3727 break;
3728 }
3729 while (**s == ' ' || **s == '\t')
3730 *s = *s + 1;
3731 return cond;
3732 }
3733 }
3734
3735 as_bad (_("Invalid FP Compare Condition: %s"), *s);
3736
3737 /* Advance over the bogus completer. */
3738 while (**s != ',' && **s != ' ' && **s != '\t')
3739 *s += 1;
3740
3741 return 0;
3742}
3743
3744
3745/* Parse an FP operand format completer returning the completer
3746 type. */
3747
3748static fp_operand_format
3749pa_parse_fp_format (s)
3750 char **s;
3751{
3752 int format;
3753
3754 format = SGL;
3755 if (**s == ',')
3756 {
3757 *s += 1;
3758 if (strncasecmp (*s, "sgl", 3) == 0)
3759 {
3760 format = SGL;
3761 *s += 4;
3762 }
3763 else if (strncasecmp (*s, "dbl", 3) == 0)
3764 {
3765 format = DBL;
3766 *s += 4;
3767 }
3768 else if (strncasecmp (*s, "quad", 4) == 0)
3769 {
3770 format = QUAD;
3771 *s += 5;
3772 }
3773 else
3774 {
3775 format = ILLEGAL_FMT;
3776 as_bad (_("Invalid FP Operand Format: %3s"), *s);
3777 }
3778 }
3779
3780 return format;
3781}
3782
3783/* Convert from a selector string into a selector type. */
3784
3785static int
3786pa_chk_field_selector (str)
3787 char **str;
3788{
3789 int middle, low, high;
3790 int cmp;
3791 char name[4];
3792
3793 /* Read past any whitespace. */
3794 /* FIXME: should we read past newlines and formfeeds??? */
3795 while (**str == ' ' || **str == '\t' || **str == '\n' || **str == '\f')
3796 *str = *str + 1;
3797
3798 if ((*str)[1] == '\'' || (*str)[1] == '%')
3799 name[0] = tolower ((*str)[0]),
3800 name[1] = 0;
3801 else if ((*str)[2] == '\'' || (*str)[2] == '%')
3802 name[0] = tolower ((*str)[0]),
3803 name[1] = tolower ((*str)[1]),
3804 name[2] = 0;
252b5132
RH		 3805 else if ((*str)[3] == '\'' || (*str)[3] == '%')
3806 name[0] = tolower ((*str)[0]),
3807 name[1] = tolower ((*str)[1]),
3808 name[2] = tolower ((*str)[2]),
3809 name[3] = 0;
252b5132
RH		 3810 else
3811 return e_fsel;
3812
3813 low = 0;
3814 high = sizeof (selector_table) / sizeof (struct selector_entry) - 1;
3815
3816 do
3817 {
3818 middle = (low + high) / 2;
3819 cmp = strcmp (name, selector_table[middle].prefix);
3820 if (cmp < 0)
3821 high = middle - 1;
3822 else if (cmp > 0)
3823 low = middle + 1;
3824 else
3825 {
3826 *str += strlen (name) + 1;
3827#ifndef OBJ_SOM
3828 if (selector_table[middle].field_selector == e_nsel)
3829 return e_fsel;
3830#endif
3831 return selector_table[middle].field_selector;
3832 }
3833 }
3834 while (low <= high);
3835
3836 return e_fsel;
3837}
3838
3839/* Mark (via expr_end) the end of an expression (I think). FIXME. */
3840
3841static int
3842get_expression (str)
3843 char *str;
3844{
3845 char *save_in;
3846 asection *seg;
3847
3848 save_in = input_line_pointer;
3849 input_line_pointer = str;
3850 seg = expression (&the_insn.exp);
3851 if (!(seg == absolute_section
3852 || seg == undefined_section
3853 || SEG_NORMAL (seg)))
3854 {
3855 as_warn (_("Bad segment in expression."));
3856 expr_end = input_line_pointer;
3857 input_line_pointer = save_in;
3858 return 1;
3859 }
3860 expr_end = input_line_pointer;
3861 input_line_pointer = save_in;
3862 return 0;
3863}
3864
3865/* Mark (via expr_end) the end of an absolute expression. FIXME. */
3866static int
3867pa_get_absolute_expression (insn, strp)
3868 struct pa_it *insn;
3869 char **strp;
3870{
3871 char *save_in;
3872
3873 insn->field_selector = pa_chk_field_selector (strp);
3874 save_in = input_line_pointer;
3875 input_line_pointer = *strp;
3876 expression (&insn->exp);
3877 /* This is not perfect, but is a huge improvement over doing nothing.
3878
3879 The PA assembly syntax is ambigious in a variety of ways. Consider
3880 this string "4 %r5" Is that the number 4 followed by the register
3881 r5, or is that 4 MOD 5?
3882
3883 If we get a modulo expresion When looking for an absolute, we try
3884 again cutting off the input string at the first whitespace character. */
3885 if (insn->exp.X_op == O_modulus)
3886 {
3887 char *s, c;
3888 int retval;
3889
3890 input_line_pointer = *strp;
3891 s = *strp;
3892 while (*s != ',' && *s != ' ' && *s != '\t')
3893 s++;
3894
3895 c = *s;
3896 *s = 0;
3897
3898 retval = pa_get_absolute_expression (insn, strp);
3899
3900 input_line_pointer = save_in;
3901 *s = c;
3902 return evaluate_absolute (insn);
3903 }
3904 if (insn->exp.X_op != O_constant)
3905 {
3906 as_bad (_("Bad segment (should be absolute)."));
3907 expr_end = input_line_pointer;
3908 input_line_pointer = save_in;
3909 return 0;
3910 }
3911 expr_end = input_line_pointer;
3912 input_line_pointer = save_in;
3913 return evaluate_absolute (insn);
3914}
3915
3916/* Evaluate an absolute expression EXP which may be modified by
3917 the selector FIELD_SELECTOR. Return the value of the expression. */
3918static int
3919evaluate_absolute (insn)
3920 struct pa_it *insn;
3921{
3922 int value;
3923 expressionS exp;
3924 int field_selector = insn->field_selector;
3925
3926 exp = insn->exp;
3927 value = exp.X_add_number;
3928
3929 switch (field_selector)
3930 {
3931 /* No change. */
3932 case e_fsel:
3933 break;
3934
3935 /* If bit 21 is on then add 0x800 and arithmetic shift right 11 bits. */
3936 case e_lssel:
3937 if (value & 0x00000400)
3938 value += 0x800;
3939 value = (value & 0xfffff800) >> 11;
3940 break;
3941
3942 /* Sign extend from bit 21. */
3943 case e_rssel:
3944 if (value & 0x00000400)
3945 value |= 0xfffff800;
3946 else
3947 value &= 0x7ff;
3948 break;
3949
3950 /* Arithmetic shift right 11 bits. */
3951 case e_lsel:
3952 value = (value & 0xfffff800) >> 11;
3953 break;
3954
3955 /* Set bits 0-20 to zero. */
3956 case e_rsel:
3957 value = value & 0x7ff;
3958 break;
3959
3960 /* Add 0x800 and arithmetic shift right 11 bits. */
3961 case e_ldsel:
3962 value += 0x800;
3963 value = (value & 0xfffff800) >> 11;
3964 break;
3965
3966 /* Set bitgs 0-21 to one. */
3967 case e_rdsel:
3968 value |= 0xfffff800;
3969 break;
3970
3971#define RSEL_ROUND(c) (((c) + 0x1000) & ~0x1fff)
3972 case e_rrsel:
3973 value = (RSEL_ROUND (value) & 0x7ff) + (value - RSEL_ROUND (value));
3974 break;
3975
3976 case e_lrsel:
3977 value = (RSEL_ROUND (value) >> 11) & 0x1fffff;
3978 break;
3979#undef RSEL_ROUND
3980
3981 default:
3982 BAD_CASE (field_selector);
3983 break;
3984 }
3985 return value;
3986}
3987
3988/* Given an argument location specification return the associated
3989 argument location number. */
3990
3991static unsigned int
3992pa_build_arg_reloc (type_name)
3993 char *type_name;
3994{
3995
3996 if (strncasecmp (type_name, "no", 2) == 0)
3997 return 0;
3998 if (strncasecmp (type_name, "gr", 2) == 0)
3999 return 1;
4000 else if (strncasecmp (type_name, "fr", 2) == 0)
4001 return 2;
4002 else if (strncasecmp (type_name, "fu", 2) == 0)
4003 return 3;
4004 else
4005 as_bad (_("Invalid argument location: %s\n"), type_name);
4006
4007 return 0;
4008}
4009
4010/* Encode and return an argument relocation specification for
4011 the given register in the location specified by arg_reloc. */
4012
4013static unsigned int
4014pa_align_arg_reloc (reg, arg_reloc)
4015 unsigned int reg;
4016 unsigned int arg_reloc;
4017{
4018 unsigned int new_reloc;
4019
4020 new_reloc = arg_reloc;
4021 switch (reg)
4022 {
4023 case 0:
4024 new_reloc <<= 8;
4025 break;
4026 case 1:
4027 new_reloc <<= 6;
4028 break;
4029 case 2:
4030 new_reloc <<= 4;
4031 break;
4032 case 3:
4033 new_reloc <<= 2;
4034 break;
4035 default:
4036 as_bad (_("Invalid argument description: %d"), reg);
4037 }
4038
4039 return new_reloc;
4040}
4041
4042/* Parse a PA nullification completer (,n). Return nonzero if the
4043 completer was found; return zero if no completer was found. */
4044
4045static int
4046pa_parse_nullif (s)
4047 char **s;
4048{
4049 int nullif;
4050
4051 nullif = 0;
4052 if (**s == ',')
4053 {
4054 *s = *s + 1;
4055 if (strncasecmp (*s, "n", 1) == 0)
4056 nullif = 1;
4057 else
4058 {
4059 as_bad (_("Invalid Nullification: (%c)"), **s);
4060 nullif = 0;
4061 }
4062 *s = *s + 1;
4063 }
4064
4065 return nullif;
4066}
4067
4068/* Parse a non-negated compare/subtract completer returning the
4069 number (for encoding in instrutions) of the given completer.
4070
4071 ISBRANCH specifies whether or not this is parsing a condition
4072 completer for a branch (vs a nullification completer for a
4073 computational instruction. */
4074
4075static int
4076pa_parse_nonneg_cmpsub_cmpltr (s, isbranch)
4077 char **s;
4078 int isbranch;
4079{
4080 int cmpltr;
4081 char *name = *s + 1;
4082 char c;
4083 char *save_s = *s;
4084 int nullify = 0;
4085
4086 cmpltr = 0;
4087 if (**s == ',')
4088 {
4089 *s += 1;
4090 while (**s != ',' && **s != ' ' && **s != '\t')
4091 *s += 1;
4092 c = **s;
4093 **s = 0x00;
4094
4095
4096 if (strcmp (name, "=") == 0)
4097 {
4098 cmpltr = 1;
4099 }
4100 else if (strcmp (name, "<") == 0)
4101 {
4102 cmpltr = 2;
4103 }
4104 else if (strcmp (name, "<=") == 0)
4105 {
4106 cmpltr = 3;
4107 }
4108 else if (strcmp (name, "<<") == 0)
4109 {
4110 cmpltr = 4;
4111 }
4112 else if (strcmp (name, "<<=") == 0)
4113 {
4114 cmpltr = 5;
4115 }
4116 else if (strcasecmp (name, "sv") == 0)
4117 {
4118 cmpltr = 6;
4119 }
4120 else if (strcasecmp (name, "od") == 0)
4121 {
4122 cmpltr = 7;
4123 }
4124 /* If we have something like addb,n then there is no condition
4125 completer. */
4126 else if (strcasecmp (name, "n") == 0 && isbranch)
4127 {
4128 cmpltr = 0;
4129 nullify = 1;
4130 }
4131 else
4132 {
4133 cmpltr = -1;
4134 }
4135 **s = c;
4136 }
4137
4138 /* Reset pointers if this was really a ,n for a branch instruction. */
4139 if (nullify)
4140 *s = save_s;
4141
4142
4143 return cmpltr;
4144}
4145
4146/* Parse a negated compare/subtract completer returning the
4147 number (for encoding in instrutions) of the given completer.
4148
4149 ISBRANCH specifies whether or not this is parsing a condition
4150 completer for a branch (vs a nullification completer for a
4151 computational instruction. */
4152
4153static int
4154pa_parse_neg_cmpsub_cmpltr (s, isbranch)
4155 char **s;
4156 int isbranch;
4157{
4158 int cmpltr;
4159 char *name = *s + 1;
4160 char c;
4161 char *save_s = *s;
4162 int nullify = 0;
4163
4164 cmpltr = 0;
4165 if (**s == ',')
4166 {
4167 *s += 1;
4168 while (**s != ',' && **s != ' ' && **s != '\t')
4169 *s += 1;
4170 c = **s;
4171 **s = 0x00;
4172
4173
4174 if (strcasecmp (name, "tr") == 0)
4175 {
4176 cmpltr = 0;
4177 }
4178 else if (strcmp (name, "<>") == 0)
4179 {
4180 cmpltr = 1;
4181 }
4182 else if (strcmp (name, ">=") == 0)
4183 {
4184 cmpltr = 2;
4185 }
4186 else if (strcmp (name, ">") == 0)
4187 {
4188 cmpltr = 3;
4189 }
4190 else if (strcmp (name, ">>=") == 0)
4191 {
4192 cmpltr = 4;
4193 }
4194 else if (strcmp (name, ">>") == 0)
4195 {
4196 cmpltr = 5;
4197 }
4198 else if (strcasecmp (name, "nsv") == 0)
4199 {
4200 cmpltr = 6;
4201 }
4202 else if (strcasecmp (name, "ev") == 0)
4203 {
4204 cmpltr = 7;
4205 }
4206 /* If we have something like addb,n then there is no condition
4207 completer. */
4208 else if (strcasecmp (name, "n") == 0 && isbranch)
4209 {
4210 cmpltr = 0;
4211 nullify = 1;
4212 }
4213 else
4214 {
4215 cmpltr = -1;
4216 }
4217 **s = c;
4218 }
4219
4220 /* Reset pointers if this was really a ,n for a branch instruction. */
4221 if (nullify)
4222 *s = save_s;
4223
4224
4225 return cmpltr;
4226}
4227
4228
4229/* Parse a non-negated addition completer returning the number
4230 (for encoding in instrutions) of the given completer.
4231
4232 ISBRANCH specifies whether or not this is parsing a condition
4233 completer for a branch (vs a nullification completer for a
4234 computational instruction. */
4235
4236static int
4237pa_parse_nonneg_add_cmpltr (s, isbranch)
4238 char **s;
4239 int isbranch;
4240{
4241 int cmpltr;
4242 char *name = *s + 1;
4243 char c;
4244 char *save_s = *s;
4245
4246 cmpltr = 0;
4247 if (**s == ',')
4248 {
4249 *s += 1;
4250 while (**s != ',' && **s != ' ' && **s != '\t')
4251 *s += 1;
4252 c = **s;
4253 **s = 0x00;
4254 if (strcmp (name, "=") == 0)
4255 {
4256 cmpltr = 1;
4257 }
4258 else if (strcmp (name, "<") == 0)
4259 {
4260 cmpltr = 2;
4261 }
4262 else if (strcmp (name, "<=") == 0)
4263 {
4264 cmpltr = 3;
4265 }
4266 else if (strcasecmp (name, "nuv") == 0)
4267 {
4268 cmpltr = 4;
4269 }
4270 else if (strcasecmp (name, "znv") == 0)
4271 {
4272 cmpltr = 5;
4273 }
4274 else if (strcasecmp (name, "sv") == 0)
4275 {
4276 cmpltr = 6;
4277 }
4278 else if (strcasecmp (name, "od") == 0)
4279 {
4280 cmpltr = 7;
4281 }
4282 /* If we have something like addb,n then there is no condition
4283 completer. */
4284 else if (strcasecmp (name, "n") == 0 && isbranch)
4285 {
4286 cmpltr = 0;
4287 }
4288 else
4289 {
4290 cmpltr = -1;
4291 }
4292 **s = c;
4293 }
4294
4295 /* Reset pointers if this was really a ,n for a branch instruction. */
4296 if (cmpltr == 0 && *name == 'n' && isbranch)
4297 *s = save_s;
4298
4299 return cmpltr;
4300}
4301
4302/* Parse a negated addition completer returning the number
4303 (for encoding in instrutions) of the given completer.
4304
4305 ISBRANCH specifies whether or not this is parsing a condition
4306 completer for a branch (vs a nullification completer for a
4307 computational instruction). */
4308
4309static int
4310pa_parse_neg_add_cmpltr (s, isbranch)
4311 char **s;
4312 int isbranch;
4313{
4314 int cmpltr;
4315 char *name = *s + 1;
4316 char c;
4317 char *save_s = *s;
4318
4319 cmpltr = 0;
4320 if (**s == ',')
4321 {
4322 *s += 1;
4323 while (**s != ',' && **s != ' ' && **s != '\t')
4324 *s += 1;
4325 c = **s;
4326 **s = 0x00;
4327 if (strcasecmp (name, "tr") == 0)
4328 {
4329 cmpltr = 0;
4330 }
4331 else if (strcmp (name, "<>") == 0)
4332 {
4333 cmpltr = 1;
4334 }
4335 else if (strcmp (name, ">=") == 0)
4336 {
4337 cmpltr = 2;
4338 }
4339 else if (strcmp (name, ">") == 0)
4340 {
4341 cmpltr = 3;
4342 }
4343 else if (strcasecmp (name, "uv") == 0)
4344 {
4345 cmpltr = 4;
4346 }
4347 else if (strcasecmp (name, "vnz") == 0)
4348 {
4349 cmpltr = 5;
4350 }
4351 else if (strcasecmp (name, "nsv") == 0)
4352 {
4353 cmpltr = 6;
4354 }
4355 else if (strcasecmp (name, "ev") == 0)
4356 {
4357 cmpltr = 7;
4358 }
4359 /* If we have something like addb,n then there is no condition
4360 completer. */
4361 else if (strcasecmp (name, "n") == 0 && isbranch)
4362 {
4363 cmpltr = 0;
4364 }
4365 else
4366 {
4367 cmpltr = -1;
4368 }
4369 **s = c;
4370 }
4371
4372 /* Reset pointers if this was really a ,n for a branch instruction. */
4373 if (cmpltr == 0 && *name == 'n' && isbranch)
4374 *s = save_s;
4375
4376 return cmpltr;
4377}
4378
49863f82 4379#ifdef OBJ_SOM
252b5132
RH		 4380/* Handle an alignment directive. Special so that we can update the
4381 alignment of the subspace if necessary. */
4382static void
4383pa_align (bytes)
4384{
4385 /* We must have a valid space and subspace. */
4386 pa_check_current_space_and_subspace ();
4387
4388 /* Let the generic gas code do most of the work. */
4389 s_align_bytes (bytes);
4390
4391 /* If bytes is a power of 2, then update the current subspace's
4392 alignment if necessary. */
4393 if (log2 (bytes) != -1)
4394 record_alignment (current_subspace->ssd_seg, log2 (bytes));
4395}
49863f82 4396#endif
252b5132
RH		 4397
4398/* Handle a .BLOCK type pseudo-op. */
4399
4400static void
4401pa_block (z)
4402 int z;
4403{
4404 char *p;
4405 long int temp_fill;
4406 unsigned int temp_size;
4407 unsigned int i;
4408
49863f82 4409#ifdef OBJ_SOM
252b5132
RH		 4410 /* We must have a valid space and subspace. */
4411 pa_check_current_space_and_subspace ();
49863f82 4412#endif
252b5132
RH		 4413
4414 temp_size = get_absolute_expression ();
4415
4416 /* Always fill with zeros, that's what the HP assembler does. */
4417 temp_fill = 0;
4418
4419 p = frag_var (rs_fill, (int) temp_size, (int) temp_size,
4420 (relax_substateT) 0, (symbolS *) 0, (offsetT) 1, NULL);
4421 memset (p, 0, temp_size);
4422
4423 /* Convert 2 bytes at a time. */
4424
4425 for (i = 0; i < temp_size; i += 2)
4426 {
4427 md_number_to_chars (p + i,
4428 (valueT) temp_fill,
4429 (int) ((temp_size - i) > 2 ? 2 : (temp_size - i)));
4430 }
4431
4432 pa_undefine_label ();
4433 demand_empty_rest_of_line ();
4434}
4435
4436/* Handle a .begin_brtab and .end_brtab pseudo-op. */
4437
4438static void
4439pa_brtab (begin)
4440 int begin;
4441{
4442
4443#ifdef OBJ_SOM
4444 /* The BRTAB relocations are only availble in SOM (to denote
4445 the beginning and end of branch tables). */
4446 char *where = frag_more (0);
4447
4448 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4449 NULL, (offsetT) 0, NULL,
4450 0, begin ? R_HPPA_BEGIN_BRTAB : R_HPPA_END_BRTAB,
4451 e_fsel, 0, 0, NULL);
4452#endif
4453
4454 demand_empty_rest_of_line ();
4455}
4456
4457/* Handle a .begin_try and .end_try pseudo-op. */
4458
4459static void
4460pa_try (begin)
4461 int begin;
4462{
4463#ifdef OBJ_SOM
4464 expressionS exp;
4465 char *where = frag_more (0);
4466
4467 if (! begin)
4468 expression (&exp);
4469
4470 /* The TRY relocations are only availble in SOM (to denote
4471 the beginning and end of exception handling regions). */
4472
4473 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4474 NULL, (offsetT) 0, begin ? NULL : &exp,
4475 0, begin ? R_HPPA_BEGIN_TRY : R_HPPA_END_TRY,
4476 e_fsel, 0, 0, NULL);
4477#endif
4478
4479 demand_empty_rest_of_line ();
4480}
4481
4482/* Handle a .CALL pseudo-op. This involves storing away information
4483 about where arguments are to be found so the linker can detect
4484 (and correct) argument location mismatches between caller and callee. */
4485
4486static void
4487pa_call (unused)
4488 int unused;
4489{
49863f82 4490#ifdef OBJ_SOM
252b5132
RH		 4491 /* We must have a valid space and subspace. */
4492 pa_check_current_space_and_subspace ();
49863f82 4493#endif
252b5132
RH		 4494
4495 pa_call_args (&last_call_desc);
4496 demand_empty_rest_of_line ();
4497}
4498
4499/* Do the dirty work of building a call descriptor which describes
4500 where the caller placed arguments to a function call. */
4501
4502static void
4503pa_call_args (call_desc)
4504 struct call_desc *call_desc;
4505{
4506 char *name, c, *p;
4507 unsigned int temp, arg_reloc;
4508
4509 while (!is_end_of_statement ())
4510 {
4511 name = input_line_pointer;
4512 c = get_symbol_end ();
4513 /* Process a source argument. */
4514 if ((strncasecmp (name, "argw", 4) == 0))
4515 {
4516 temp = atoi (name + 4);
4517 p = input_line_pointer;
4518 *p = c;
4519 input_line_pointer++;
4520 name = input_line_pointer;
4521 c = get_symbol_end ();
4522 arg_reloc = pa_build_arg_reloc (name);
4523 call_desc->arg_reloc |= pa_align_arg_reloc (temp, arg_reloc);
4524 }
4525 /* Process a return value. */
4526 else if ((strncasecmp (name, "rtnval", 6) == 0))
4527 {
4528 p = input_line_pointer;
4529 *p = c;
4530 input_line_pointer++;
4531 name = input_line_pointer;
4532 c = get_symbol_end ();
4533 arg_reloc = pa_build_arg_reloc (name);
4534 call_desc->arg_reloc |= (arg_reloc & 0x3);
4535 }
4536 else
4537 {
4538 as_bad (_("Invalid .CALL argument: %s"), name);
4539 }
4540 p = input_line_pointer;
4541 *p = c;
4542 if (!is_end_of_statement ())
4543 input_line_pointer++;
4544 }
4545}
4546
4547/* Return TRUE if FRAG1 and FRAG2 are the same. */
4548
4549static int
4550is_same_frag (frag1, frag2)
4551 fragS *frag1;
4552 fragS *frag2;
4553{
4554
4555 if (frag1 == NULL)
4556 return (FALSE);
4557 else if (frag2 == NULL)
4558 return (FALSE);
4559 else if (frag1 == frag2)
4560 return (TRUE);
4561 else if (frag2->fr_type == rs_fill && frag2->fr_fix == 0)
4562 return (is_same_frag (frag1, frag2->fr_next));
4563 else
4564 return (FALSE);
4565}
4566
4567#ifdef OBJ_ELF
4568/* Build an entry in the UNWIND subspace from the given function
4569 attributes in CALL_INFO. This is not needed for SOM as using
4570 R_ENTRY and R_EXIT relocations allow the linker to handle building
4571 of the unwind spaces. */
4572
4573static void
4574pa_build_unwind_subspace (call_info)
4575 struct call_info *call_info;
4576{
4577 char *unwind;
4578 asection *seg, *save_seg;
46031ca9 4579 asymbol *sym;
252b5132 4580 subsegT subseg, save_subseg;
46031ca9 4581 int i, reloc;
252b5132
RH		 4582 char c, *p;
4583
9100134c
JL		 4584 if (bfd_get_arch_info (stdoutput)->bits_per_address == 32)
4585 reloc = R_PARISC_DIR32;
46031ca9 4586 else
9100134c 4587 reloc = R_PARISC_SEGREL32;
46031ca9 4588
252b5132
RH		 4589 /* Get into the right seg/subseg. This may involve creating
4590 the seg the first time through. Make sure to have the
4591 old seg/subseg so that we can reset things when we are done. */
252b5132
RH		 4592 seg = bfd_get_section_by_name (stdoutput, UNWIND_SECTION_NAME);
4593 if (seg == ASEC_NULL)
4594 {
4595 seg = bfd_make_section_old_way (stdoutput, UNWIND_SECTION_NAME);
4596 bfd_set_section_flags (stdoutput, seg,
4597 SEC_READONLY | SEC_HAS_CONTENTS
b100be66
JL		 4598 | SEC_LOAD | SEC_RELOC | SEC_ALLOC | SEC_DATA);
4599 bfd_set_section_alignment (stdoutput, seg, 2);
252b5132
RH		 4600 }
4601
4602 save_seg = now_seg;
4603 save_subseg = now_subseg;
46031ca9 4604 subseg_set (seg, 0);
252b5132
RH		 4605
4606
4607 /* Get some space to hold relocation information for the unwind
4608 descriptor. */
4609 p = frag_more (4);
4610 md_number_to_chars (p, 0, 4);
4611
4612 /* Relocation info. for start offset of the function. */
4613 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
4614 call_info->start_symbol, (offsetT) 0,
46031ca9
JL		 4615 (expressionS *) NULL, 0, reloc,
4616 e_fsel, 32, 0, NULL);
252b5132
RH		 4617
4618 p = frag_more (4);
4619 md_number_to_chars (p, 0, 4);
4620
4621 /* Relocation info. for end offset of the function.
4622
4623 Because we allow reductions of 32bit relocations for ELF, this will be
4624 reduced to section_sym + offset which avoids putting the temporary
4625 symbol into the symbol table. It (should) end up giving the same
4626 value as call_info->start_symbol + function size once the linker is
4627 finished with its work. */
4628
4629 fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
4630 call_info->end_symbol, (offsetT) 0,
46031ca9
JL		 4631 (expressionS *) NULL, 0, reloc,
4632 e_fsel, 32, 0, NULL);
252b5132
RH		 4633
4634 /* Dump it. */
4635 unwind = (char *) &call_info->ci_unwind;
4636 for (i = 8; i < sizeof (struct unwind_table); i++)
4637 {
4638 c = *(unwind + i);
4639 {
4640 FRAG_APPEND_1_CHAR (c);
4641 }
4642 }
4643
4644 /* Return back to the original segment/subsegment. */
4645 subseg_set (save_seg, save_subseg);
4646}
4647#endif
4648
4649/* Process a .CALLINFO pseudo-op. This information is used later
4650 to build unwind descriptors and maybe one day to support
4651 .ENTER and .LEAVE. */
4652
4653static void
4654pa_callinfo (unused)
4655 int unused;
4656{
4657 char *name, c, *p;
4658 int temp;
4659
49863f82 4660#ifdef OBJ_SOM
252b5132
RH		 4661 /* We must have a valid space and subspace. */
4662 pa_check_current_space_and_subspace ();
49863f82 4663#endif
252b5132
RH		 4664
4665 /* .CALLINFO must appear within a procedure definition. */
4666 if (!within_procedure)
4667 as_bad (_(".callinfo is not within a procedure definition"));
4668
4669 /* Mark the fact that we found the .CALLINFO for the
4670 current procedure. */
4671 callinfo_found = TRUE;
4672
4673 /* Iterate over the .CALLINFO arguments. */
4674 while (!is_end_of_statement ())
4675 {
4676 name = input_line_pointer;
4677 c = get_symbol_end ();
4678 /* Frame size specification. */
4679 if ((strncasecmp (name, "frame", 5) == 0))
4680 {
4681 p = input_line_pointer;
4682 *p = c;
4683 input_line_pointer++;
4684 temp = get_absolute_expression ();
4685 if ((temp & 0x3) != 0)
4686 {
4687 as_bad (_("FRAME parameter must be a multiple of 8: %d\n"), temp);
4688 temp = 0;
4689 }
4690
4691 /* callinfo is in bytes and unwind_desc is in 8 byte units. */
4692 last_call_info->ci_unwind.descriptor.frame_size = temp / 8;
4693
4694 }
4695 /* Entry register (GR, GR and SR) specifications. */
4696 else if ((strncasecmp (name, "entry_gr", 8) == 0))
4697 {
4698 p = input_line_pointer;
4699 *p = c;
4700 input_line_pointer++;
4701 temp = get_absolute_expression ();
4702 /* The HP assembler accepts 19 as the high bound for ENTRY_GR
4703 even though %r19 is caller saved. I think this is a bug in
4704 the HP assembler, and we are not going to emulate it. */
4705 if (temp < 3 || temp > 18)
4706 as_bad (_("Value for ENTRY_GR must be in the range 3..18\n"));
4707 last_call_info->ci_unwind.descriptor.entry_gr = temp - 2;
4708 }
4709 else if ((strncasecmp (name, "entry_fr", 8) == 0))
4710 {
4711 p = input_line_pointer;
4712 *p = c;
4713 input_line_pointer++;
4714 temp = get_absolute_expression ();
4715 /* Similarly the HP assembler takes 31 as the high bound even
4716 though %fr21 is the last callee saved floating point register. */
4717 if (temp < 12 || temp > 21)
4718 as_bad (_("Value for ENTRY_FR must be in the range 12..21\n"));
4719 last_call_info->ci_unwind.descriptor.entry_fr = temp - 11;
4720 }
4721 else if ((strncasecmp (name, "entry_sr", 8) == 0))
4722 {
4723 p = input_line_pointer;
4724 *p = c;
4725 input_line_pointer++;
4726 temp = get_absolute_expression ();
4727 if (temp != 3)
4728 as_bad (_("Value for ENTRY_SR must be 3\n"));
4729 }
4730 /* Note whether or not this function performs any calls. */
4731 else if ((strncasecmp (name, "calls", 5) == 0) ||
4732 (strncasecmp (name, "caller", 6) == 0))
4733 {
4734 p = input_line_pointer;
4735 *p = c;
4736 }
4737 else if ((strncasecmp (name, "no_calls", 8) == 0))
4738 {
4739 p = input_line_pointer;
4740 *p = c;
4741 }
4742 /* Should RP be saved into the stack. */
4743 else if ((strncasecmp (name, "save_rp", 7) == 0))
4744 {
4745 p = input_line_pointer;
4746 *p = c;
4747 last_call_info->ci_unwind.descriptor.save_rp = 1;
4748 }
4749 /* Likewise for SP. */
4750 else if ((strncasecmp (name, "save_sp", 7) == 0))
4751 {
4752 p = input_line_pointer;
4753 *p = c;
4754 last_call_info->ci_unwind.descriptor.save_sp = 1;
4755 }
4756 /* Is this an unwindable procedure. If so mark it so
4757 in the unwind descriptor. */
4758 else if ((strncasecmp (name, "no_unwind", 9) == 0))
4759 {
4760 p = input_line_pointer;
4761 *p = c;
4762 last_call_info->ci_unwind.descriptor.cannot_unwind = 1;
4763 }
4764 /* Is this an interrupt routine. If so mark it in the
4765 unwind descriptor. */
4766 else if ((strncasecmp (name, "hpux_int", 7) == 0))
4767 {
4768 p = input_line_pointer;
4769 *p = c;
4770 last_call_info->ci_unwind.descriptor.hpux_interrupt_marker = 1;
4771 }
4772 /* Is this a millicode routine. "millicode" isn't in my
4773 assembler manual, but my copy is old. The HP assembler
4774 accepts it, and there's a place in the unwind descriptor
4775 to drop the information, so we'll accept it too. */
4776 else if ((strncasecmp (name, "millicode", 9) == 0))
4777 {
4778 p = input_line_pointer;
4779 *p = c;
4780 last_call_info->ci_unwind.descriptor.millicode = 1;
4781 }
4782 else
4783 {
4784 as_bad (_("Invalid .CALLINFO argument: %s"), name);
4785 *input_line_pointer = c;
4786 }
4787 if (!is_end_of_statement ())
4788 input_line_pointer++;
4789 }
4790
4791 demand_empty_rest_of_line ();
4792}
4793
4794/* Switch into the code subspace. */
4795
4796static void
4797pa_code (unused)
4798 int unused;
4799{
49863f82 4800#ifdef OBJ_SOM
252b5132
RH		 4801 current_space = is_defined_space ("$TEXT$");
4802 current_subspace
4803 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
49863f82 4804#endif
252b5132
RH		 4805 s_text (0);
4806 pa_undefine_label ();
4807}
4808
4809/* This is different than the standard GAS s_comm(). On HP9000/800 machines,
4810 the .comm pseudo-op has the following symtax:
4811
4812 <label> .comm <length>
4813
4814 where <label> is optional and is a symbol whose address will be the start of
4815 a block of memory <length> bytes long. <length> must be an absolute
4816 expression. <length> bytes will be allocated in the current space
4817 and subspace.
4818
4819 Also note the label may not even be on the same line as the .comm.
4820
4821 This difference in syntax means the colon function will be called
4822 on the symbol before we arrive in pa_comm. colon will set a number
4823 of attributes of the symbol that need to be fixed here. In particular
4824 the value, section pointer, fragment pointer, flags, etc. What
4825 a pain.
4826
4827 This also makes error detection all but impossible. */
4828
4829static void
4830pa_comm (unused)
4831 int unused;
4832{
4833 unsigned int size;
4834 symbolS *symbol;
4835 label_symbol_struct *label_symbol = pa_get_label ();
4836
4837 if (label_symbol)
4838 symbol = label_symbol->lss_label;
4839 else
4840 symbol = NULL;
4841
4842 SKIP_WHITESPACE ();
4843 size = get_absolute_expression ();
4844
4845 if (symbol)
4846 {
4847 S_SET_VALUE (symbol, size);
4848 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
4849 S_SET_EXTERNAL (symbol);
4850
4851 /* colon() has already set the frag to the current location in the
4852 current subspace; we need to reset the fragment to the zero address
4853 fragment. We also need to reset the segment pointer. */
a0f75b47 4854 symbol_set_frag (symbol, &zero_address_frag);
252b5132
RH		 4855 }
4856 demand_empty_rest_of_line ();
4857}
4858
4859/* Process a .END pseudo-op. */
4860
4861static void
4862pa_end (unused)
4863 int unused;
4864{
4865 demand_empty_rest_of_line ();
4866}
4867
4868/* Process a .ENTER pseudo-op. This is not supported. */
4869static void
4870pa_enter (unused)
4871 int unused;
4872{
49863f82 4873#ifdef OBJ_SOM
252b5132
RH		 4874 /* We must have a valid space and subspace. */
4875 pa_check_current_space_and_subspace ();
49863f82 4876#endif
252b5132
RH		 4877
4878 as_bad (_("The .ENTER pseudo-op is not supported"));
4879 demand_empty_rest_of_line ();
4880}
4881
4882/* Process a .ENTRY pseudo-op. .ENTRY marks the beginning of the
4883 procesure. */
4884static void
4885pa_entry (unused)
4886 int unused;
4887{
49863f82 4888#ifdef OBJ_SOM
252b5132
RH		 4889 /* We must have a valid space and subspace. */
4890 pa_check_current_space_and_subspace ();
49863f82 4891#endif
252b5132
RH		 4892
4893 if (!within_procedure)
4894 as_bad (_("Misplaced .entry. Ignored."));
4895 else
4896 {
4897 if (!callinfo_found)
4898 as_bad (_("Missing .callinfo."));
4899 }
4900 demand_empty_rest_of_line ();
4901 within_entry_exit = TRUE;
4902
4903#ifdef OBJ_SOM
4904 /* SOM defers building of unwind descriptors until the link phase.
4905 The assembler is responsible for creating an R_ENTRY relocation
4906 to mark the beginning of a region and hold the unwind bits, and
4907 for creating an R_EXIT relocation to mark the end of the region.
4908
4909 FIXME. ELF should be using the same conventions! The problem
4910 is an unwind requires too much relocation space. Hmmm. Maybe
4911 if we split the unwind bits up between the relocations which
4912 denote the entry and exit points. */
4913 if (last_call_info->start_symbol != NULL)
4914 {
4915 char *where = frag_more (0);
4916
4917 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4918 NULL, (offsetT) 0, NULL,
4919 0, R_HPPA_ENTRY, e_fsel, 0, 0,
4920 (int *) &last_call_info->ci_unwind.descriptor);
4921 }
4922#endif
4923}
4924
4925/* Handle a .EQU pseudo-op. */
4926
4927static void
4928pa_equ (reg)
4929 int reg;
4930{
4931 label_symbol_struct *label_symbol = pa_get_label ();
4932 symbolS *symbol;
4933
4934 if (label_symbol)
4935 {
4936 symbol = label_symbol->lss_label;
4937 if (reg)
4938 S_SET_VALUE (symbol, pa_parse_number (&input_line_pointer, 0));
4939 else
4940 S_SET_VALUE (symbol, (unsigned int) get_absolute_expression ());
4941 S_SET_SEGMENT (symbol, bfd_abs_section_ptr);
4942 }
4943 else
4944 {
4945 if (reg)
4946 as_bad (_(".REG must use a label"));
4947 else
4948 as_bad (_(".EQU must use a label"));
4949 }
4950
4951 pa_undefine_label ();
4952 demand_empty_rest_of_line ();
4953}
4954
4955/* Helper function. Does processing for the end of a function. This
4956 usually involves creating some relocations or building special
4957 symbols to mark the end of the function. */
4958
4959static void
4960process_exit ()
4961{
4962 char *where;
4963
4964 where = frag_more (0);
4965
4966#ifdef OBJ_ELF
4967 /* Mark the end of the function, stuff away the location of the frag
4968 for the end of the function, and finally call pa_build_unwind_subspace
4969 to add an entry in the unwind table. */
4970 hppa_elf_mark_end_of_function ();
4971 pa_build_unwind_subspace (last_call_info);
4972#else
4973 /* SOM defers building of unwind descriptors until the link phase.
4974 The assembler is responsible for creating an R_ENTRY relocation
4975 to mark the beginning of a region and hold the unwind bits, and
4976 for creating an R_EXIT relocation to mark the end of the region.
4977
4978 FIXME. ELF should be using the same conventions! The problem
4979 is an unwind requires too much relocation space. Hmmm. Maybe
4980 if we split the unwind bits up between the relocations which
4981 denote the entry and exit points. */
4982 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
4983 NULL, (offsetT) 0,
4984 NULL, 0, R_HPPA_EXIT, e_fsel, 0, 0,
4985 (int *) &last_call_info->ci_unwind.descriptor + 1);
4986#endif
4987}
4988
4989/* Process a .EXIT pseudo-op. */
4990
4991static void
4992pa_exit (unused)
4993 int unused;
4994{
49863f82 4995#ifdef OBJ_SOM
252b5132
RH		 4996 /* We must have a valid space and subspace. */
4997 pa_check_current_space_and_subspace ();
49863f82 4998#endif
252b5132
RH		 4999
5000 if (!within_procedure)
5001 as_bad (_(".EXIT must appear within a procedure"));
5002 else
5003 {
5004 if (!callinfo_found)
5005 as_bad (_("Missing .callinfo"));
5006 else
5007 {
5008 if (!within_entry_exit)
5009 as_bad (_("No .ENTRY for this .EXIT"));
5010 else
5011 {
5012 within_entry_exit = FALSE;
5013 process_exit ();
5014 }
5015 }
5016 }
5017 demand_empty_rest_of_line ();
5018}
5019
5020/* Process a .EXPORT directive. This makes functions external
5021 and provides information such as argument relocation entries
5022 to callers. */
5023
5024static void
5025pa_export (unused)
5026 int unused;
5027{
5028 char *name, c, *p;
5029 symbolS *symbol;
5030
5031 name = input_line_pointer;
5032 c = get_symbol_end ();
5033 /* Make sure the given symbol exists. */
5034 if ((symbol = symbol_find_or_make (name)) == NULL)
5035 {
5036 as_bad (_("Cannot define export symbol: %s\n"), name);
5037 p = input_line_pointer;
5038 *p = c;
5039 input_line_pointer++;
5040 }
5041 else
5042 {
5043 /* OK. Set the external bits and process argument relocations. */
5044 S_SET_EXTERNAL (symbol);
5045 p = input_line_pointer;
5046 *p = c;
5047 if (!is_end_of_statement ())
5048 {
5049 input_line_pointer++;
5050 pa_type_args (symbol, 1);
5051 }
5052 }
5053
5054 demand_empty_rest_of_line ();
5055}
5056
5057/* Helper function to process arguments to a .EXPORT pseudo-op. */
5058
5059static void
5060pa_type_args (symbolP, is_export)
5061 symbolS *symbolP;
5062 int is_export;
5063{
5064 char *name, c, *p;
5065 unsigned int temp, arg_reloc;
5066 pa_symbol_type type = SYMBOL_TYPE_UNKNOWN;
a0f75b47 5067 obj_symbol_type *symbol = (obj_symbol_type *) symbol_get_bfdsym (symbolP);
252b5132
RH		 5068
5069 if (strncasecmp (input_line_pointer, "absolute", 8) == 0)
5070
5071 {
5072 input_line_pointer += 8;
a0f75b47 5073 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5074 S_SET_SEGMENT (symbolP, bfd_abs_section_ptr);
5075 type = SYMBOL_TYPE_ABSOLUTE;
5076 }
5077 else if (strncasecmp (input_line_pointer, "code", 4) == 0)
5078 {
5079 input_line_pointer += 4;
5080 /* IMPORTing/EXPORTing CODE types for functions is meaningless for SOM,
5081 instead one should be IMPORTing/EXPORTing ENTRY types.
5082
5083 Complain if one tries to EXPORT a CODE type since that's never
5084 done. Both GCC and HP C still try to IMPORT CODE types, so
5085 silently fix them to be ENTRY types. */
a0f75b47 5086 if (S_IS_FUNCTION (symbolP))
252b5132
RH		 5087 {
5088 if (is_export)
a0f75b47
ILT		 5089 as_tsktsk (_("Using ENTRY rather than CODE in export directive for %s"),
5090 S_GET_NAME (symbolP));
252b5132 5091
a0f75b47 5092 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5093 type = SYMBOL_TYPE_ENTRY;
5094 }
5095 else
5096 {
a0f75b47 5097 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5098 type = SYMBOL_TYPE_CODE;
5099 }
5100 }
5101 else if (strncasecmp (input_line_pointer, "data", 4) == 0)
5102 {
5103 input_line_pointer += 4;
a0f75b47 5104 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5105 type = SYMBOL_TYPE_DATA;
5106 }
5107 else if ((strncasecmp (input_line_pointer, "entry", 5) == 0))
5108 {
5109 input_line_pointer += 5;
a0f75b47 5110 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5111 type = SYMBOL_TYPE_ENTRY;
5112 }
5113 else if (strncasecmp (input_line_pointer, "millicode", 9) == 0)
5114 {
5115 input_line_pointer += 9;
a0f75b47 5116 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5117 type = SYMBOL_TYPE_MILLICODE;
5118 }
5119 else if (strncasecmp (input_line_pointer, "plabel", 6) == 0)
5120 {
5121 input_line_pointer += 6;
a0f75b47 5122 symbol_get_bfdsym (symbolP)->flags &= ~BSF_FUNCTION;
252b5132
RH		 5123 type = SYMBOL_TYPE_PLABEL;
5124 }
5125 else if (strncasecmp (input_line_pointer, "pri_prog", 8) == 0)
5126 {
5127 input_line_pointer += 8;
a0f75b47 5128 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5129 type = SYMBOL_TYPE_PRI_PROG;
5130 }
5131 else if (strncasecmp (input_line_pointer, "sec_prog", 8) == 0)
5132 {
5133 input_line_pointer += 8;
a0f75b47 5134 symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION;
252b5132
RH		 5135 type = SYMBOL_TYPE_SEC_PROG;
5136 }
5137
5138 /* SOM requires much more information about symbol types
5139 than BFD understands. This is how we get this information
5140 to the SOM BFD backend. */
5141#ifdef obj_set_symbol_type
a0f75b47 5142 obj_set_symbol_type (symbol_get_bfdsym (symbolP), (int) type);
252b5132
RH		 5143#endif
5144
5145 /* Now that the type of the exported symbol has been handled,
5146 handle any argument relocation information. */
5147 while (!is_end_of_statement ())
5148 {
5149 if (*input_line_pointer == ',')
5150 input_line_pointer++;
5151 name = input_line_pointer;
5152 c = get_symbol_end ();
5153 /* Argument sources. */
5154 if ((strncasecmp (name, "argw", 4) == 0))
5155 {
5156 p = input_line_pointer;
5157 *p = c;
5158 input_line_pointer++;
5159 temp = atoi (name + 4);
5160 name = input_line_pointer;
5161 c = get_symbol_end ();
5162 arg_reloc = pa_align_arg_reloc (temp, pa_build_arg_reloc (name));
49863f82 5163#ifdef OBJ_SOM
252b5132 5164 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
49863f82 5165#endif
252b5132
RH		 5166 *input_line_pointer = c;
5167 }
5168 /* The return value. */
5169 else if ((strncasecmp (name, "rtnval", 6)) == 0)
5170 {
5171 p = input_line_pointer;
5172 *p = c;
5173 input_line_pointer++;
5174 name = input_line_pointer;
5175 c = get_symbol_end ();
5176 arg_reloc = pa_build_arg_reloc (name);
49863f82 5177#ifdef OBJ_SOM
252b5132 5178 symbol->tc_data.ap.hppa_arg_reloc |= arg_reloc;
49863f82 5179#endif
252b5132
RH		 5180 *input_line_pointer = c;
5181 }
5182 /* Privelege level. */
5183 else if ((strncasecmp (name, "priv_lev", 8)) == 0)
5184 {
5185 p = input_line_pointer;
5186 *p = c;
5187 input_line_pointer++;
5188 temp = atoi (input_line_pointer);
49863f82 5189#ifdef OBJ_SOM
252b5132 5190 symbol->tc_data.ap.hppa_priv_level = temp;
49863f82 5191#endif
252b5132
RH		 5192 c = get_symbol_end ();
5193 *input_line_pointer = c;
5194 }
5195 else
5196 {
5197 as_bad (_("Undefined .EXPORT/.IMPORT argument (ignored): %s"), name);
5198 p = input_line_pointer;
5199 *p = c;
5200 }
5201 if (!is_end_of_statement ())
5202 input_line_pointer++;
5203 }
5204}
5205
5206/* Handle an .IMPORT pseudo-op. Any symbol referenced in a given
5207 assembly file must either be defined in the assembly file, or
5208 explicitly IMPORTED from another. */
5209
5210static void
5211pa_import (unused)
5212 int unused;
5213{
5214 char *name, c, *p;
5215 symbolS *symbol;
5216
5217 name = input_line_pointer;
5218 c = get_symbol_end ();
5219
5220 symbol = symbol_find (name);
5221 /* Ugh. We might be importing a symbol defined earlier in the file,
5222 in which case all the code below will really screw things up
5223 (set the wrong segment, symbol flags & type, etc). */
5224 if (symbol == NULL || !S_IS_DEFINED (symbol))
5225 {
5226 symbol = symbol_find_or_make (name);
5227 p = input_line_pointer;
5228 *p = c;
5229
5230 if (!is_end_of_statement ())
5231 {
5232 input_line_pointer++;
5233 pa_type_args (symbol, 0);
5234 }
5235 else
5236 {
5237 /* Sigh. To be compatable with the HP assembler and to help
5238 poorly written assembly code, we assign a type based on
5239 the the current segment. Note only BSF_FUNCTION really
5240 matters, we do not need to set the full SYMBOL_TYPE_* info. */
5241 if (now_seg == text_section)
a0f75b47 5242 symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION;
252b5132
RH		 5243
5244 /* If the section is undefined, then the symbol is undefined
5245 Since this is an import, leave the section undefined. */
5246 S_SET_SEGMENT (symbol, bfd_und_section_ptr);
5247 }
5248 }
5249 else
5250 {
5251 /* The symbol was already defined. Just eat everything up to
5252 the end of the current statement. */
5253 while (!is_end_of_statement ())
5254 input_line_pointer++;
5255 }
5256
5257 demand_empty_rest_of_line ();
5258}
5259
5260/* Handle a .LABEL pseudo-op. */
5261
5262static void
5263pa_label (unused)
5264 int unused;
5265{
5266 char *name, c, *p;
5267
5268 name = input_line_pointer;
5269 c = get_symbol_end ();
5270
5271 if (strlen (name) > 0)
5272 {
5273 colon (name);
5274 p = input_line_pointer;
5275 *p = c;
5276 }
5277 else
5278 {
5279 as_warn (_("Missing label name on .LABEL"));
5280 }
5281
5282 if (!is_end_of_statement ())
5283 {
5284 as_warn (_("extra .LABEL arguments ignored."));
5285 ignore_rest_of_line ();
5286 }
5287 demand_empty_rest_of_line ();
5288}
5289
5290/* Handle a .LEAVE pseudo-op. This is not supported yet. */
5291
5292static void
5293pa_leave (unused)
5294 int unused;
5295{
49863f82 5296#ifdef OBJ_SOM
252b5132
RH		 5297 /* We must have a valid space and subspace. */
5298 pa_check_current_space_and_subspace ();
49863f82 5299#endif
252b5132
RH		 5300
5301 as_bad (_("The .LEAVE pseudo-op is not supported"));
5302 demand_empty_rest_of_line ();
5303}
5304
5305/* Handle a .LEVEL pseudo-op. */
5306
5307static void
5308pa_level (unused)
5309 int unused;
5310{
5311 char *level;
5312
5313 level = input_line_pointer;
5314 if (strncmp (level, "1.0", 3) == 0)
5315 {
5316 input_line_pointer += 3;
5317 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 10))
5318 as_warn (_("could not set architecture and machine"));
5319 }
5320 else if (strncmp (level, "1.1", 3) == 0)
5321 {
5322 input_line_pointer += 3;
5323 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 11))
5324 as_warn (_("could not set architecture and machine"));
5325 }
46031ca9
JL		 5326 else if (strncmp (level, "2.0w", 4) == 0)
5327 {
5328 input_line_pointer += 4;
5329 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 25))
5330 as_warn (_("could not set architecture and machine"));
5331 }
252b5132
RH		 5332 else if (strncmp (level, "2.0", 3) == 0)
5333 {
5334 input_line_pointer += 3;
5335 if (!bfd_set_arch_mach (stdoutput, bfd_arch_hppa, 20))
5336 as_warn (_("could not set architecture and machine"));
5337 }
5338 else
5339 {
5340 as_bad (_("Unrecognized .LEVEL argument\n"));
5341 ignore_rest_of_line ();
5342 }
5343 demand_empty_rest_of_line ();
5344}
5345
5346/* Handle a .ORIGIN pseudo-op. */
5347
5348static void
5349pa_origin (unused)
5350 int unused;
5351{
49863f82 5352#ifdef OBJ_SOM
252b5132
RH		 5353 /* We must have a valid space and subspace. */
5354 pa_check_current_space_and_subspace ();
49863f82 5355#endif
252b5132
RH		 5356
5357 s_org (0);
5358 pa_undefine_label ();
5359}
5360
5361/* Handle a .PARAM pseudo-op. This is much like a .EXPORT, except it
5362 is for static functions. FIXME. Should share more code with .EXPORT. */
5363
5364static void
5365pa_param (unused)
5366 int unused;
5367{
5368 char *name, c, *p;
5369 symbolS *symbol;
5370
5371 name = input_line_pointer;
5372 c = get_symbol_end ();
5373
5374 if ((symbol = symbol_find_or_make (name)) == NULL)
5375 {
5376 as_bad (_("Cannot define static symbol: %s\n"), name);
5377 p = input_line_pointer;
5378 *p = c;
5379 input_line_pointer++;
5380 }
5381 else
5382 {
5383 S_CLEAR_EXTERNAL (symbol);
5384 p = input_line_pointer;
5385 *p = c;
5386 if (!is_end_of_statement ())
5387 {
5388 input_line_pointer++;
5389 pa_type_args (symbol, 0);
5390 }
5391 }
5392
5393 demand_empty_rest_of_line ();
5394}
5395
5396/* Handle a .PROC pseudo-op. It is used to mark the beginning
5397 of a procedure from a syntatical point of view. */
5398
5399static void
5400pa_proc (unused)
5401 int unused;
5402{
5403 struct call_info *call_info;
5404
49863f82 5405#ifdef OBJ_SOM
252b5132
RH		 5406 /* We must have a valid space and subspace. */
5407 pa_check_current_space_and_subspace ();
49863f82 5408#endif
252b5132
RH		 5409
5410 if (within_procedure)
5411 as_fatal (_("Nested procedures"));
5412
5413 /* Reset global variables for new procedure. */
5414 callinfo_found = FALSE;
5415 within_procedure = TRUE;
5416
5417 /* Create another call_info structure. */
5418 call_info = (struct call_info *) xmalloc (sizeof (struct call_info));
5419
5420 if (!call_info)
5421 as_fatal (_("Cannot allocate unwind descriptor\n"));
5422
5423 memset (call_info, 0, sizeof (struct call_info));
5424
5425 call_info->ci_next = NULL;
5426
5427 if (call_info_root == NULL)
5428 {
5429 call_info_root = call_info;
5430 last_call_info = call_info;
5431 }
5432 else
5433 {
5434 last_call_info->ci_next = call_info;
5435 last_call_info = call_info;
5436 }
5437
5438 /* set up defaults on call_info structure */
5439
5440 call_info->ci_unwind.descriptor.cannot_unwind = 0;
5441 call_info->ci_unwind.descriptor.region_desc = 1;
5442 call_info->ci_unwind.descriptor.hpux_interrupt_marker = 0;
5443
5444 /* If we got a .PROC pseudo-op, we know that the function is defined
5445 locally. Make sure it gets into the symbol table. */
5446 {
5447 label_symbol_struct *label_symbol = pa_get_label ();
5448
5449 if (label_symbol)
5450 {
5451 if (label_symbol->lss_label)
5452 {
5453 last_call_info->start_symbol = label_symbol->lss_label;
a0f75b47 5454 symbol_get_bfdsym (label_symbol->lss_label)->flags |= BSF_FUNCTION;
252b5132
RH		 5455 }
5456 else
5457 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5458 }
5459 else
5460 last_call_info->start_symbol = NULL;
5461 }
5462
5463 demand_empty_rest_of_line ();
5464}
5465
5466/* Process the syntatical end of a procedure. Make sure all the
5467 appropriate pseudo-ops were found within the procedure. */
5468
5469static void
5470pa_procend (unused)
5471 int unused;
5472{
5473
49863f82 5474#ifdef OBJ_SOM
252b5132
RH		 5475 /* We must have a valid space and subspace. */
5476 pa_check_current_space_and_subspace ();
49863f82 5477#endif
252b5132
RH		 5478
5479 /* If we are within a procedure definition, make sure we've
5480 defined a label for the procedure; handle case where the
5481 label was defined after the .PROC directive.
5482
5483 Note there's not need to diddle with the segment or fragment
5484 for the label symbol in this case. We have already switched
5485 into the new $CODE$ subspace at this point. */
5486 if (within_procedure && last_call_info->start_symbol == NULL)
5487 {
5488 label_symbol_struct *label_symbol = pa_get_label ();
5489
5490 if (label_symbol)
5491 {
5492 if (label_symbol->lss_label)
5493 {
5494 last_call_info->start_symbol = label_symbol->lss_label;
a0f75b47
ILT		 5495 symbol_get_bfdsym (label_symbol->lss_label)->flags
5496 |= BSF_FUNCTION;
252b5132
RH		 5497#ifdef OBJ_SOM
5498 /* Also handle allocation of a fixup to hold the unwind
5499 information when the label appears after the proc/procend. */
5500 if (within_entry_exit)
5501 {
5502 char *where = frag_more (0);
5503
5504 fix_new_hppa (frag_now, where - frag_now->fr_literal, 0,
5505 NULL, (offsetT) 0, NULL,
5506 0, R_HPPA_ENTRY, e_fsel, 0, 0,
5507 (int *) &last_call_info->ci_unwind.descriptor);
5508 }
5509#endif
5510 }
5511 else
5512 as_bad (_("Missing function name for .PROC (corrupted label chain)"));
5513 }
5514 else
5515 as_bad (_("Missing function name for .PROC"));
5516 }
5517
5518 if (!within_procedure)
5519 as_bad (_("misplaced .procend"));
5520
5521 if (!callinfo_found)
5522 as_bad (_("Missing .callinfo for this procedure"));
5523
5524 if (within_entry_exit)
5525 as_bad (_("Missing .EXIT for a .ENTRY"));
5526
5527#ifdef OBJ_ELF
5528 /* ELF needs to mark the end of each function so that it can compute
5529 the size of the function (apparently its needed in the symbol table). */
5530 hppa_elf_mark_end_of_function ();
5531#endif
5532
5533 within_procedure = FALSE;
5534 demand_empty_rest_of_line ();
5535 pa_undefine_label ();
5536}
5537
49863f82
JL		 5538/* If VALUE is an exact power of two between zero and 2^31, then
5539 return log2 (VALUE). Else return -1. */
5540
5541static int
5542log2 (value)
5543 int value;
5544{
5545 int shift = 0;
5546
5547 while ((1 << shift) != value && shift < 32)
5548 shift++;
5549
5550 if (shift >= 32)
5551 return -1;
5552 else
5553 return shift;
5554}
5555
5556
5557#ifdef OBJ_SOM
5558/* Check to make sure we have a valid space and subspace. */
5559
5560static void
5561pa_check_current_space_and_subspace ()
5562{
5563 if (current_space == NULL)
5564 as_fatal (_("Not in a space.\n"));
5565
5566 if (current_subspace == NULL)
5567 as_fatal (_("Not in a subspace.\n"));
5568}
5569
252b5132
RH		 5570/* Parse the parameters to a .SPACE directive; if CREATE_FLAG is nonzero,
5571 then create a new space entry to hold the information specified
5572 by the parameters to the .SPACE directive. */
5573
5574static sd_chain_struct *
5575pa_parse_space_stmt (space_name, create_flag)
5576 char *space_name;
5577 int create_flag;
5578{
5579 char *name, *ptemp, c;
5580 char loadable, defined, private, sort;
5581 int spnum, temp;
5582 asection *seg = NULL;
5583 sd_chain_struct *space;
5584
5585 /* load default values */
5586 spnum = 0;
5587 sort = 0;
5588 loadable = TRUE;
5589 defined = TRUE;
5590 private = FALSE;
5591 if (strcmp (space_name, "$TEXT$") == 0)
5592 {
5593 seg = pa_def_spaces[0].segment;
5594 defined = pa_def_spaces[0].defined;
5595 private = pa_def_spaces[0].private;
5596 sort = pa_def_spaces[0].sort;
5597 spnum = pa_def_spaces[0].spnum;
5598 }
5599 else if (strcmp (space_name, "$PRIVATE$") == 0)
5600 {
5601 seg = pa_def_spaces[1].segment;
5602 defined = pa_def_spaces[1].defined;
5603 private = pa_def_spaces[1].private;
5604 sort = pa_def_spaces[1].sort;
5605 spnum = pa_def_spaces[1].spnum;
5606 }
5607
5608 if (!is_end_of_statement ())
5609 {
5610 print_errors = FALSE;
5611 ptemp = input_line_pointer + 1;
5612 /* First see if the space was specified as a number rather than
5613 as a name. According to the PA assembly manual the rest of
5614 the line should be ignored. */
5615 temp = pa_parse_number (&ptemp, 0);
5616 if (temp >= 0)
5617 {
5618 spnum = temp;
5619 input_line_pointer = ptemp;
5620 }
5621 else
5622 {
5623 while (!is_end_of_statement ())
5624 {
5625 input_line_pointer++;
5626 name = input_line_pointer;
5627 c = get_symbol_end ();
5628 if ((strncasecmp (name, "spnum", 5) == 0))
5629 {
5630 *input_line_pointer = c;
5631 input_line_pointer++;
5632 spnum = get_absolute_expression ();
5633 }
5634 else if ((strncasecmp (name, "sort", 4) == 0))
5635 {
5636 *input_line_pointer = c;
5637 input_line_pointer++;
5638 sort = get_absolute_expression ();
5639 }
5640 else if ((strncasecmp (name, "unloadable", 10) == 0))
5641 {
5642 *input_line_pointer = c;
5643 loadable = FALSE;
5644 }
5645 else if ((strncasecmp (name, "notdefined", 10) == 0))
5646 {
5647 *input_line_pointer = c;
5648 defined = FALSE;
5649 }
5650 else if ((strncasecmp (name, "private", 7) == 0))
5651 {
5652 *input_line_pointer = c;
5653 private = TRUE;
5654 }
5655 else
5656 {
5657 as_bad (_("Invalid .SPACE argument"));
5658 *input_line_pointer = c;
5659 if (!is_end_of_statement ())
5660 input_line_pointer++;
5661 }
5662 }
5663 }
5664 print_errors = TRUE;
5665 }
5666
5667 if (create_flag && seg == NULL)
5668 seg = subseg_new (space_name, 0);
5669
5670 /* If create_flag is nonzero, then create the new space with
5671 the attributes computed above. Else set the values in
5672 an already existing space -- this can only happen for
5673 the first occurence of a built-in space. */
5674 if (create_flag)
5675 space = create_new_space (space_name, spnum, loadable, defined,
5676 private, sort, seg, 1);
5677 else
5678 {
5679 space = is_defined_space (space_name);
5680 SPACE_SPNUM (space) = spnum;
5681 SPACE_DEFINED (space) = defined & 1;
5682 SPACE_USER_DEFINED (space) = 1;
5683 }
5684
5685#ifdef obj_set_section_attributes
5686 obj_set_section_attributes (seg, defined, private, sort, spnum);
5687#endif
5688
5689 return space;
5690}
5691
5692/* Handle a .SPACE pseudo-op; this switches the current space to the
5693 given space, creating the new space if necessary. */
5694
5695static void
5696pa_space (unused)
5697 int unused;
5698{
5699 char *name, c, *space_name, *save_s;
5700 int temp;
5701 sd_chain_struct *sd_chain;
5702
5703 if (within_procedure)
5704 {
5705 as_bad (_("Can\'t change spaces within a procedure definition. Ignored"));
5706 ignore_rest_of_line ();
5707 }
5708 else
5709 {
5710 /* Check for some of the predefined spaces. FIXME: most of the code
5711 below is repeated several times, can we extract the common parts
5712 and place them into a subroutine or something similar? */
5713 /* FIXME Is this (and the next IF stmt) really right?
5714 What if INPUT_LINE_POINTER points to "$TEXT$FOO"? */
5715 if (strncmp (input_line_pointer, "$TEXT$", 6) == 0)
5716 {
5717 input_line_pointer += 6;
5718 sd_chain = is_defined_space ("$TEXT$");
5719 if (sd_chain == NULL)
5720 sd_chain = pa_parse_space_stmt ("$TEXT$", 1);
5721 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5722 sd_chain = pa_parse_space_stmt ("$TEXT$", 0);
5723
5724 current_space = sd_chain;
5725 subseg_set (text_section, sd_chain->sd_last_subseg);
5726 current_subspace
5727 = pa_subsegment_to_subspace (text_section,
5728 sd_chain->sd_last_subseg);
5729 demand_empty_rest_of_line ();
5730 return;
5731 }
5732 if (strncmp (input_line_pointer, "$PRIVATE$", 9) == 0)
5733 {
5734 input_line_pointer += 9;
5735 sd_chain = is_defined_space ("$PRIVATE$");
5736 if (sd_chain == NULL)
5737 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 1);
5738 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5739 sd_chain = pa_parse_space_stmt ("$PRIVATE$", 0);
5740
5741 current_space = sd_chain;
5742 subseg_set (data_section, sd_chain->sd_last_subseg);
5743 current_subspace
5744 = pa_subsegment_to_subspace (data_section,
5745 sd_chain->sd_last_subseg);
5746 demand_empty_rest_of_line ();
5747 return;
5748 }
5749 if (!strncasecmp (input_line_pointer,
5750 GDB_DEBUG_SPACE_NAME,
5751 strlen (GDB_DEBUG_SPACE_NAME)))
5752 {
5753 input_line_pointer += strlen (GDB_DEBUG_SPACE_NAME);
5754 sd_chain = is_defined_space (GDB_DEBUG_SPACE_NAME);
5755 if (sd_chain == NULL)
5756 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 1);
5757 else if (SPACE_USER_DEFINED (sd_chain) == 0)
5758 sd_chain = pa_parse_space_stmt (GDB_DEBUG_SPACE_NAME, 0);
5759
5760 current_space = sd_chain;
5761
5762 {
5763 asection *gdb_section
5764 = bfd_make_section_old_way (stdoutput, GDB_DEBUG_SPACE_NAME);
5765
5766 subseg_set (gdb_section, sd_chain->sd_last_subseg);
5767 current_subspace
5768 = pa_subsegment_to_subspace (gdb_section,
5769 sd_chain->sd_last_subseg);
5770 }
5771 demand_empty_rest_of_line ();
5772 return;
5773 }
5774
5775 /* It could be a space specified by number. */
5776 print_errors = 0;
5777 save_s = input_line_pointer;
5778 if ((temp = pa_parse_number (&input_line_pointer, 0)) >= 0)
5779 {
5780 if ((sd_chain = pa_find_space_by_number (temp)))
5781 {
5782 current_space = sd_chain;
5783
5784 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
5785 current_subspace
5786 = pa_subsegment_to_subspace (sd_chain->sd_seg,
5787 sd_chain->sd_last_subseg);
5788 demand_empty_rest_of_line ();
5789 return;
5790 }
5791 }
5792
5793 /* Not a number, attempt to create a new space. */
5794 print_errors = 1;
5795 input_line_pointer = save_s;
5796 name = input_line_pointer;
5797 c = get_symbol_end ();
5798 space_name = xmalloc (strlen (name) + 1);
5799 strcpy (space_name, name);
5800 *input_line_pointer = c;
5801
5802 sd_chain = pa_parse_space_stmt (space_name, 1);
5803 current_space = sd_chain;
5804
5805 subseg_set (sd_chain->sd_seg, sd_chain->sd_last_subseg);
5806 current_subspace = pa_subsegment_to_subspace (sd_chain->sd_seg,
5807 sd_chain->sd_last_subseg);
5808 demand_empty_rest_of_line ();
5809 }
5810}
5811
5812/* Switch to a new space. (I think). FIXME. */
5813
5814static void
5815pa_spnum (unused)
5816 int unused;
5817{
5818 char *name;
5819 char c;
5820 char *p;
5821 sd_chain_struct *space;
5822
5823 name = input_line_pointer;
5824 c = get_symbol_end ();
5825 space = is_defined_space (name);
5826 if (space)
5827 {
5828 p = frag_more (4);
5829 md_number_to_chars (p, SPACE_SPNUM (space), 4);
5830 }
5831 else
5832 as_warn (_("Undefined space: '%s' Assuming space number = 0."), name);
5833
5834 *input_line_pointer = c;
5835 demand_empty_rest_of_line ();
5836}
5837
252b5132
RH		 5838/* Handle a .SUBSPACE pseudo-op; this switches the current subspace to the
5839 given subspace, creating the new subspace if necessary.
5840
5841 FIXME. Should mirror pa_space more closely, in particular how
5842 they're broken up into subroutines. */
5843
5844static void
5845pa_subspace (create_new)
5846 int create_new;
5847{
49863f82 5848 char *name, *ss_name, c;
252b5132
RH		 5849 char loadable, code_only, common, dup_common, zero, sort;
5850 int i, access, space_index, alignment, quadrant, applicable, flags;
5851 sd_chain_struct *space;
5852 ssd_chain_struct *ssd;
5853 asection *section;
5854
5855 if (current_space == NULL)
5856 as_fatal (_("Must be in a space before changing or declaring subspaces.\n"));
5857
5858 if (within_procedure)
5859 {
5860 as_bad (_("Can\'t change subspaces within a procedure definition. Ignored"));
5861 ignore_rest_of_line ();
5862 }
5863 else
5864 {
5865 name = input_line_pointer;
5866 c = get_symbol_end ();
5867 ss_name = xmalloc (strlen (name) + 1);
5868 strcpy (ss_name, name);
5869 *input_line_pointer = c;
5870
5871 /* Load default values. */
5872 sort = 0;
5873 access = 0x7f;
5874 loadable = 1;
5875 common = 0;
5876 dup_common = 0;
5877 code_only = 0;
5878 zero = 0;
5879 space_index = ~0;
5880 alignment = 1;
5881 quadrant = 0;
252b5132
RH		 5882
5883 space = current_space;
5884 if (create_new)
5885 ssd = NULL;
5886 else
5887 ssd = is_defined_subspace (ss_name);
5888 /* Allow user to override the builtin attributes of subspaces. But
5889 only allow the attributes to be changed once! */
5890 if (ssd && SUBSPACE_DEFINED (ssd))
5891 {
5892 subseg_set (ssd->ssd_seg, ssd->ssd_subseg);
5893 current_subspace = ssd;
5894 if (!is_end_of_statement ())
5895 as_warn (_("Parameters of an existing subspace can\'t be modified"));
5896 demand_empty_rest_of_line ();
5897 return;
5898 }
5899 else
5900 {
5901 /* A new subspace. Load default values if it matches one of
5902 the builtin subspaces. */
5903 i = 0;
5904 while (pa_def_subspaces[i].name)
5905 {
5906 if (strcasecmp (pa_def_subspaces[i].name, ss_name) == 0)
5907 {
5908 loadable = pa_def_subspaces[i].loadable;
5909 common = pa_def_subspaces[i].common;
5910 dup_common = pa_def_subspaces[i].dup_common;
5911 code_only = pa_def_subspaces[i].code_only;
5912 zero = pa_def_subspaces[i].zero;
5913 space_index = pa_def_subspaces[i].space_index;
5914 alignment = pa_def_subspaces[i].alignment;
5915 quadrant = pa_def_subspaces[i].quadrant;
5916 access = pa_def_subspaces[i].access;
5917 sort = pa_def_subspaces[i].sort;
252b5132
RH		 5918 break;
5919 }
5920 i++;
5921 }
5922 }
5923
5924 /* We should be working with a new subspace now. Fill in
5925 any information as specified by the user. */
5926 if (!is_end_of_statement ())
5927 {
5928 input_line_pointer++;
5929 while (!is_end_of_statement ())
5930 {
5931 name = input_line_pointer;
5932 c = get_symbol_end ();
5933 if ((strncasecmp (name, "quad", 4) == 0))
5934 {
5935 *input_line_pointer = c;
5936 input_line_pointer++;
5937 quadrant = get_absolute_expression ();
5938 }
5939 else if ((strncasecmp (name, "align", 5) == 0))
5940 {
5941 *input_line_pointer = c;
5942 input_line_pointer++;
5943 alignment = get_absolute_expression ();
5944 if (log2 (alignment) == -1)
5945 {
5946 as_bad (_("Alignment must be a power of 2"));
5947 alignment = 1;
5948 }
5949 }
5950 else if ((strncasecmp (name, "access", 6) == 0))
5951 {
5952 *input_line_pointer = c;
5953 input_line_pointer++;
5954 access = get_absolute_expression ();
5955 }
5956 else if ((strncasecmp (name, "sort", 4) == 0))
5957 {
5958 *input_line_pointer = c;
5959 input_line_pointer++;
5960 sort = get_absolute_expression ();
5961 }
5962 else if ((strncasecmp (name, "code_only", 9) == 0))
5963 {
5964 *input_line_pointer = c;
5965 code_only = 1;
5966 }
5967 else if ((strncasecmp (name, "unloadable", 10) == 0))
5968 {
5969 *input_line_pointer = c;
5970 loadable = 0;
5971 }
5972 else if ((strncasecmp (name, "common", 6) == 0))
5973 {
5974 *input_line_pointer = c;
5975 common = 1;
5976 }
5977 else if ((strncasecmp (name, "dup_comm", 8) == 0))
5978 {
5979 *input_line_pointer = c;
5980 dup_common = 1;
5981 }
5982 else if ((strncasecmp (name, "zero", 4) == 0))
5983 {
5984 *input_line_pointer = c;
5985 zero = 1;
5986 }
5987 else if ((strncasecmp (name, "first", 5) == 0))
5988 as_bad (_("FIRST not supported as a .SUBSPACE argument"));
5989 else
5990 as_bad (_("Invalid .SUBSPACE argument"));
5991 if (!is_end_of_statement ())
5992 input_line_pointer++;
5993 }
5994 }
5995
5996 /* Compute a reasonable set of BFD flags based on the information
5997 in the .subspace directive. */
5998 applicable = bfd_applicable_section_flags (stdoutput);
5999 flags = 0;
6000 if (loadable)
6001 flags |= (SEC_ALLOC | SEC_LOAD);
6002 if (code_only)
6003 flags |= SEC_CODE;
6004 if (common || dup_common)
6005 flags |= SEC_IS_COMMON;
6006
6007 flags |= SEC_RELOC | SEC_HAS_CONTENTS;
6008
6009 /* This is a zero-filled subspace (eg BSS). */
6010 if (zero)
6011 flags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
6012
6013 applicable &= flags;
6014
6015 /* If this is an existing subspace, then we want to use the
6016 segment already associated with the subspace.
6017
6018 FIXME NOW! ELF BFD doesn't appear to be ready to deal with
6019 lots of sections. It might be a problem in the PA ELF
6020 code, I do not know yet. For now avoid creating anything
6021 but the "standard" sections for ELF. */
6022 if (create_new)
6023 section = subseg_force_new (ss_name, 0);
6024 else if (ssd)
6025 section = ssd->ssd_seg;
252b5132
RH		 6026 else
6027 section = subseg_new (ss_name, 0);
6028
6029 if (zero)
6030 seg_info (section)->bss = 1;
6031
6032 /* Now set the flags. */
6033 bfd_set_section_flags (stdoutput, section, applicable);
6034
6035 /* Record any alignment request for this section. */
6036 record_alignment (section, log2 (alignment));
6037
6038 /* Set the starting offset for this section. */
6039 bfd_set_section_vma (stdoutput, section,
6040 pa_subspace_start (space, quadrant));
6041
6042 /* Now that all the flags are set, update an existing subspace,
6043 or create a new one. */
6044 if (ssd)
6045
6046 current_subspace = update_subspace (space, ss_name, loadable,
6047 code_only, common, dup_common,
6048 sort, zero, access, space_index,
6049 alignment, quadrant,
6050 section);
6051 else
6052 current_subspace = create_new_subspace (space, ss_name, loadable,
6053 code_only, common,
6054 dup_common, zero, sort,
6055 access, space_index,
6056 alignment, quadrant, section);
6057
6058 demand_empty_rest_of_line ();
6059 current_subspace->ssd_seg = section;
6060 subseg_set (current_subspace->ssd_seg, current_subspace->ssd_subseg);
6061 }
6062 SUBSPACE_DEFINED (current_subspace) = 1;
6063}
6064
6065
6066/* Create default space and subspace dictionaries. */
6067
6068static void
6069pa_spaces_begin ()
6070{
6071 int i;
6072
6073 space_dict_root = NULL;
6074 space_dict_last = NULL;
6075
6076 i = 0;
6077 while (pa_def_spaces[i].name)
6078 {
6079 char *name;
6080
6081 /* Pick the right name to use for the new section. */
49863f82 6082 name = pa_def_spaces[i].name;
252b5132
RH		 6083
6084 pa_def_spaces[i].segment = subseg_new (name, 0);
6085 create_new_space (pa_def_spaces[i].name, pa_def_spaces[i].spnum,
6086 pa_def_spaces[i].loadable, pa_def_spaces[i].defined,
6087 pa_def_spaces[i].private, pa_def_spaces[i].sort,
6088 pa_def_spaces[i].segment, 0);
6089 i++;
6090 }
6091
6092 i = 0;
6093 while (pa_def_subspaces[i].name)
6094 {
6095 char *name;
6096 int applicable, subsegment;
6097 asection *segment = NULL;
6098 sd_chain_struct *space;
6099
6100 /* Pick the right name for the new section and pick the right
6101 subsegment number. */
49863f82
JL		 6102 name = pa_def_subspaces[i].name;
6103 subsegment = 0;
252b5132
RH		 6104
6105 /* Create the new section. */
6106 segment = subseg_new (name, subsegment);
6107
6108
6109 /* For SOM we want to replace the standard .text, .data, and .bss
6110 sections with our own. We also want to set BFD flags for
6111 all the built-in subspaces. */
49863f82 6112 if (!strcmp (pa_def_subspaces[i].name, "$CODE$"))
252b5132
RH		 6113 {
6114 text_section = segment;
6115 applicable = bfd_applicable_section_flags (stdoutput);
6116 bfd_set_section_flags (stdoutput, segment,
6117 applicable & (SEC_ALLOC | SEC_LOAD
6118 | SEC_RELOC | SEC_CODE
6119 | SEC_READONLY
6120 | SEC_HAS_CONTENTS));
6121 }
49863f82 6122 else if (!strcmp (pa_def_subspaces[i].name, "$DATA$"))
252b5132
RH		 6123 {
6124 data_section = segment;
6125 applicable = bfd_applicable_section_flags (stdoutput);
6126 bfd_set_section_flags (stdoutput, segment,
6127 applicable & (SEC_ALLOC | SEC_LOAD
6128 | SEC_RELOC
6129 | SEC_HAS_CONTENTS));
6130
6131
6132 }
49863f82 6133 else if (!strcmp (pa_def_subspaces[i].name, "$BSS$"))
252b5132
RH		 6134 {
6135 bss_section = segment;
6136 applicable = bfd_applicable_section_flags (stdoutput);
6137 bfd_set_section_flags (stdoutput, segment,
6138 applicable & SEC_ALLOC);
6139 }
49863f82 6140 else if (!strcmp (pa_def_subspaces[i].name, "$LIT$"))
252b5132
RH		 6141 {
6142 applicable = bfd_applicable_section_flags (stdoutput);
6143 bfd_set_section_flags (stdoutput, segment,
6144 applicable & (SEC_ALLOC | SEC_LOAD
6145 | SEC_RELOC
6146 | SEC_READONLY
6147 | SEC_HAS_CONTENTS));
6148 }
49863f82 6149 else if (!strcmp (pa_def_subspaces[i].name, "$MILLICODE$"))
252b5132
RH		 6150 {
6151 applicable = bfd_applicable_section_flags (stdoutput);
6152 bfd_set_section_flags (stdoutput, segment,
6153 applicable & (SEC_ALLOC | SEC_LOAD
6154 | SEC_RELOC
6155 | SEC_READONLY
6156 | SEC_HAS_CONTENTS));
6157 }
49863f82 6158 else if (!strcmp (pa_def_subspaces[i].name, "$UNWIND$"))
252b5132
RH		 6159 {
6160 applicable = bfd_applicable_section_flags (stdoutput);
6161 bfd_set_section_flags (stdoutput, segment,
6162 applicable & (SEC_ALLOC | SEC_LOAD
6163 | SEC_RELOC
6164 | SEC_READONLY
6165 | SEC_HAS_CONTENTS));
6166 }
6167
6168 /* Find the space associated with this subspace. */
6169 space = pa_segment_to_space (pa_def_spaces[pa_def_subspaces[i].
6170 def_space_index].segment);
6171 if (space == NULL)
6172 {
6173 as_fatal (_("Internal error: Unable to find containing space for %s."),
6174 pa_def_subspaces[i].name);
6175 }
6176
6177 create_new_subspace (space, name,
6178 pa_def_subspaces[i].loadable,
6179 pa_def_subspaces[i].code_only,
6180 pa_def_subspaces[i].common,
6181 pa_def_subspaces[i].dup_common,
6182 pa_def_subspaces[i].zero,
6183 pa_def_subspaces[i].sort,
6184 pa_def_subspaces[i].access,
6185 pa_def_subspaces[i].space_index,
6186 pa_def_subspaces[i].alignment,
6187 pa_def_subspaces[i].quadrant,
6188 segment);
6189 i++;
6190 }
6191}
6192
6193
6194
6195/* Create a new space NAME, with the appropriate flags as defined
6196 by the given parameters. */
6197
6198static sd_chain_struct *
6199create_new_space (name, spnum, loadable, defined, private,
6200 sort, seg, user_defined)
6201 char *name;
6202 int spnum;
6203 int loadable;
6204 int defined;
6205 int private;
6206 int sort;
6207 asection *seg;
6208 int user_defined;
6209{
6210 sd_chain_struct *chain_entry;
6211
6212 chain_entry = (sd_chain_struct *) xmalloc (sizeof (sd_chain_struct));
6213 if (!chain_entry)
6214 as_fatal (_("Out of memory: could not allocate new space chain entry: %s\n"),
6215 name);
6216
6217 SPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6218 strcpy (SPACE_NAME (chain_entry), name);
6219 SPACE_DEFINED (chain_entry) = defined;
6220 SPACE_USER_DEFINED (chain_entry) = user_defined;
6221 SPACE_SPNUM (chain_entry) = spnum;
6222
6223 chain_entry->sd_seg = seg;
6224 chain_entry->sd_last_subseg = -1;
6225 chain_entry->sd_subspaces = NULL;
6226 chain_entry->sd_next = NULL;
6227
6228 /* Find spot for the new space based on its sort key. */
6229 if (!space_dict_last)
6230 space_dict_last = chain_entry;
6231
6232 if (space_dict_root == NULL)
6233 space_dict_root = chain_entry;
6234 else
6235 {
6236 sd_chain_struct *chain_pointer;
6237 sd_chain_struct *prev_chain_pointer;
6238
6239 chain_pointer = space_dict_root;
6240 prev_chain_pointer = NULL;
6241
6242 while (chain_pointer)
6243 {
6244 prev_chain_pointer = chain_pointer;
6245 chain_pointer = chain_pointer->sd_next;
6246 }
6247
6248 /* At this point we've found the correct place to add the new
6249 entry. So add it and update the linked lists as appropriate. */
6250 if (prev_chain_pointer)
6251 {
6252 chain_entry->sd_next = chain_pointer;
6253 prev_chain_pointer->sd_next = chain_entry;
6254 }
6255 else
6256 {
6257 space_dict_root = chain_entry;
6258 chain_entry->sd_next = chain_pointer;
6259 }
6260
6261 if (chain_entry->sd_next == NULL)
6262 space_dict_last = chain_entry;
6263 }
6264
6265 /* This is here to catch predefined spaces which do not get
6266 modified by the user's input. Another call is found at
6267 the bottom of pa_parse_space_stmt to handle cases where
6268 the user modifies a predefined space. */
6269#ifdef obj_set_section_attributes
6270 obj_set_section_attributes (seg, defined, private, sort, spnum);
6271#endif
6272
6273 return chain_entry;
6274}
6275
6276/* Create a new subspace NAME, with the appropriate flags as defined
6277 by the given parameters.
6278
6279 Add the new subspace to the subspace dictionary chain in numerical
6280 order as defined by the SORT entries. */
6281
6282static ssd_chain_struct *
6283create_new_subspace (space, name, loadable, code_only, common,
6284 dup_common, is_zero, sort, access, space_index,
6285 alignment, quadrant, seg)
6286 sd_chain_struct *space;
6287 char *name;
6288 int loadable, code_only, common, dup_common, is_zero;
6289 int sort;
6290 int access;
6291 int space_index;
6292 int alignment;
6293 int quadrant;
6294 asection *seg;
6295{
6296 ssd_chain_struct *chain_entry;
6297
6298 chain_entry = (ssd_chain_struct *) xmalloc (sizeof (ssd_chain_struct));
6299 if (!chain_entry)
6300 as_fatal (_("Out of memory: could not allocate new subspace chain entry: %s\n"), name);
6301
6302 SUBSPACE_NAME (chain_entry) = (char *) xmalloc (strlen (name) + 1);
6303 strcpy (SUBSPACE_NAME (chain_entry), name);
6304
6305 /* Initialize subspace_defined. When we hit a .subspace directive
6306 we'll set it to 1 which "locks-in" the subspace attributes. */
6307 SUBSPACE_DEFINED (chain_entry) = 0;
6308
49863f82 6309 chain_entry->ssd_subseg = 0;
252b5132
RH		 6310 chain_entry->ssd_seg = seg;
6311 chain_entry->ssd_next = NULL;
6312
6313 /* Find spot for the new subspace based on its sort key. */
6314 if (space->sd_subspaces == NULL)
6315 space->sd_subspaces = chain_entry;
6316 else
6317 {
6318 ssd_chain_struct *chain_pointer;
6319 ssd_chain_struct *prev_chain_pointer;
6320
6321 chain_pointer = space->sd_subspaces;
6322 prev_chain_pointer = NULL;
6323
6324 while (chain_pointer)
6325 {
6326 prev_chain_pointer = chain_pointer;
6327 chain_pointer = chain_pointer->ssd_next;
6328 }
6329
6330 /* Now we have somewhere to put the new entry. Insert it and update
6331 the links. */
6332 if (prev_chain_pointer)
6333 {
6334 chain_entry->ssd_next = chain_pointer;
6335 prev_chain_pointer->ssd_next = chain_entry;
6336 }
6337 else
6338 {
6339 space->sd_subspaces = chain_entry;
6340 chain_entry->ssd_next = chain_pointer;
6341 }
6342 }
6343
6344#ifdef obj_set_subsection_attributes
6345 obj_set_subsection_attributes (seg, space->sd_seg, access,
6346 sort, quadrant);
6347#endif
6348
6349 return chain_entry;
6350}
6351
6352/* Update the information for the given subspace based upon the
6353 various arguments. Return the modified subspace chain entry. */
6354
6355static ssd_chain_struct *
6356update_subspace (space, name, loadable, code_only, common, dup_common, sort,
6357 zero, access, space_index, alignment, quadrant, section)
6358 sd_chain_struct *space;
6359 char *name;
6360 int loadable;
6361 int code_only;
6362 int common;
6363 int dup_common;
6364 int zero;
6365 int sort;
6366 int access;
6367 int space_index;
6368 int alignment;
6369 int quadrant;
6370 asection *section;
6371{
6372 ssd_chain_struct *chain_entry;
6373
6374 chain_entry = is_defined_subspace (name);
6375
6376#ifdef obj_set_subsection_attributes
6377 obj_set_subsection_attributes (section, space->sd_seg, access,
6378 sort, quadrant);
6379#endif
6380
6381 return chain_entry;
6382}
6383
6384/* Return the space chain entry for the space with the name NAME or
6385 NULL if no such space exists. */
6386
6387static sd_chain_struct *
6388is_defined_space (name)
6389 char *name;
6390{
6391 sd_chain_struct *chain_pointer;
6392
6393 for (chain_pointer = space_dict_root;
6394 chain_pointer;
6395 chain_pointer = chain_pointer->sd_next)
6396 {
6397 if (strcmp (SPACE_NAME (chain_pointer), name) == 0)
6398 return chain_pointer;
6399 }
6400
6401 /* No mapping from segment to space was found. Return NULL. */
6402 return NULL;
6403}
6404
6405/* Find and return the space associated with the given seg. If no mapping
6406 from the given seg to a space is found, then return NULL.
6407
6408 Unlike subspaces, the number of spaces is not expected to grow much,
6409 so a linear exhaustive search is OK here. */
6410
6411static sd_chain_struct *
6412pa_segment_to_space (seg)
6413 asection *seg;
6414{
6415 sd_chain_struct *space_chain;
6416
6417 /* Walk through each space looking for the correct mapping. */
6418 for (space_chain = space_dict_root;
6419 space_chain;
6420 space_chain = space_chain->sd_next)
6421 {
6422 if (space_chain->sd_seg == seg)
6423 return space_chain;
6424 }
6425
6426 /* Mapping was not found. Return NULL. */
6427 return NULL;
6428}
6429
6430/* Return the space chain entry for the subspace with the name NAME or
6431 NULL if no such subspace exists.
6432
6433 Uses a linear search through all the spaces and subspaces, this may
6434 not be appropriate if we ever being placing each function in its
6435 own subspace. */
6436
6437static ssd_chain_struct *
6438is_defined_subspace (name)
6439 char *name;
6440{
6441 sd_chain_struct *space_chain;
6442 ssd_chain_struct *subspace_chain;
6443
6444 /* Walk through each space. */
6445 for (space_chain = space_dict_root;
6446 space_chain;
6447 space_chain = space_chain->sd_next)
6448 {
6449 /* Walk through each subspace looking for a name which matches. */
6450 for (subspace_chain = space_chain->sd_subspaces;
6451 subspace_chain;
6452 subspace_chain = subspace_chain->ssd_next)
6453 if (strcmp (SUBSPACE_NAME (subspace_chain), name) == 0)
6454 return subspace_chain;
6455 }
6456
6457 /* Subspace wasn't found. Return NULL. */
6458 return NULL;
6459}
6460
6461/* Find and return the subspace associated with the given seg. If no
6462 mapping from the given seg to a subspace is found, then return NULL.
6463
6464 If we ever put each procedure/function within its own subspace
6465 (to make life easier on the compiler and linker), then this will have
6466 to become more efficient. */
6467
6468static ssd_chain_struct *
6469pa_subsegment_to_subspace (seg, subseg)
6470 asection *seg;
6471 subsegT subseg;
6472{
6473 sd_chain_struct *space_chain;
6474 ssd_chain_struct *subspace_chain;
6475
6476 /* Walk through each space. */
6477 for (space_chain = space_dict_root;
6478 space_chain;
6479 space_chain = space_chain->sd_next)
6480 {
6481 if (space_chain->sd_seg == seg)
6482 {
6483 /* Walk through each subspace within each space looking for
6484 the correct mapping. */
6485 for (subspace_chain = space_chain->sd_subspaces;
6486 subspace_chain;
6487 subspace_chain = subspace_chain->ssd_next)
6488 if (subspace_chain->ssd_subseg == (int) subseg)
6489 return subspace_chain;
6490 }
6491 }
6492
6493 /* No mapping from subsegment to subspace found. Return NULL. */
6494 return NULL;
6495}
6496
6497/* Given a number, try and find a space with the name number.
6498
6499 Return a pointer to a space dictionary chain entry for the space
6500 that was found or NULL on failure. */
6501
6502static sd_chain_struct *
6503pa_find_space_by_number (number)
6504 int number;
6505{
6506 sd_chain_struct *space_chain;
6507
6508 for (space_chain = space_dict_root;
6509 space_chain;
6510 space_chain = space_chain->sd_next)
6511 {
6512 if (SPACE_SPNUM (space_chain) == (unsigned int) number)
6513 return space_chain;
6514 }
6515
6516 /* No appropriate space found. Return NULL. */
6517 return NULL;
6518}
6519
6520/* Return the starting address for the given subspace. If the starting
6521 address is unknown then return zero. */
6522
6523static unsigned int
6524pa_subspace_start (space, quadrant)
6525 sd_chain_struct *space;
6526 int quadrant;
6527{
252b5132
RH		 6528 /* FIXME. Assumes everyone puts read/write data at 0x4000000, this
6529 is not correct for the PA OSF1 port. */
6530 if ((strcmp (SPACE_NAME (space), "$PRIVATE$") == 0) && quadrant == 1)
6531 return 0x40000000;
6532 else if (space->sd_seg == data_section && quadrant == 1)
6533 return 0x40000000;
6534 else
6535 return 0;
252b5132
RH		 6536 return 0;
6537}
6538
6539/* FIXME. Needs documentation. */
6540static int
6541pa_next_subseg (space)
6542 sd_chain_struct *space;
6543{
6544
6545 space->sd_last_subseg++;
6546 return space->sd_last_subseg;
6547}
49863f82 6548#endif
252b5132
RH		 6549
6550/* Helper function for pa_stringer. Used to find the end of
6551 a string. */
6552
6553static unsigned int
6554pa_stringer_aux (s)
6555 char *s;
6556{
6557 unsigned int c = *s & CHAR_MASK;
6558
49863f82 6559#ifdef OBJ_SOM
252b5132
RH		 6560 /* We must have a valid space and subspace. */
6561 pa_check_current_space_and_subspace ();
49863f82 6562#endif
252b5132
RH		 6563
6564 switch (c)
6565 {
6566 case '\"':
6567 c = NOT_A_CHAR;
6568 break;
6569 default:
6570 break;
6571 }
6572 return c;
6573}
6574
6575/* Handle a .STRING type pseudo-op. */
6576
6577static void
6578pa_stringer (append_zero)
6579 int append_zero;
6580{
6581 char *s, num_buf[4];
6582 unsigned int c;
6583 int i;
6584
6585 /* Preprocess the string to handle PA-specific escape sequences.
6586 For example, \xDD where DD is a hexidecimal number should be
6587 changed to \OOO where OOO is an octal number. */
6588
6589 /* Skip the opening quote. */
6590 s = input_line_pointer + 1;
6591
6592 while (is_a_char (c = pa_stringer_aux (s++)))
6593 {
6594 if (c == '\\')
6595 {
6596 c = *s;
6597 switch (c)
6598 {
6599 /* Handle \x<num>. */
6600 case 'x':
6601 {
6602 unsigned int number;
6603 int num_digit;
6604 char dg;
6605 char *s_start = s;
6606
6607 /* Get pas the 'x'. */
6608 s++;
6609 for (num_digit = 0, number = 0, dg = *s;
6610 num_digit < 2
6611 && (isdigit (dg) || (dg >= 'a' && dg <= 'f')
6612 || (dg >= 'A' && dg <= 'F'));
6613 num_digit++)
6614 {
6615 if (isdigit (dg))
6616 number = number * 16 + dg - '0';
6617 else if (dg >= 'a' && dg <= 'f')
6618 number = number * 16 + dg - 'a' + 10;
6619 else
6620 number = number * 16 + dg - 'A' + 10;
6621
6622 s++;
6623 dg = *s;
6624 }
6625 if (num_digit > 0)
6626 {
6627 switch (num_digit)
6628 {
6629 case 1:
6630 sprintf (num_buf, "%02o", number);
6631 break;
6632 case 2:
6633 sprintf (num_buf, "%03o", number);
6634 break;
6635 }
6636 for (i = 0; i <= num_digit; i++)
6637 s_start[i] = num_buf[i];
6638 }
6639 break;
6640 }
6641 /* This might be a "\"", skip over the escaped char. */
6642 default:
6643 s++;
6644 break;
6645 }
6646 }
6647 }
6648 stringer (append_zero);
6649 pa_undefine_label ();
6650}
6651
6652/* Handle a .VERSION pseudo-op. */
6653
6654static void
6655pa_version (unused)
6656 int unused;
6657{
6658 obj_version (0);
6659 pa_undefine_label ();
6660}
6661
6662#ifdef OBJ_SOM
6663
6664/* Handle a .COMPILER pseudo-op. */
6665
6666static void
6667pa_compiler (unused)
6668 int unused;
6669{
6670 obj_som_compiler (0);
6671 pa_undefine_label ();
6672}
6673
6674#endif
6675
6676/* Handle a .COPYRIGHT pseudo-op. */
6677
6678static void
6679pa_copyright (unused)
6680 int unused;
6681{
6682 obj_copyright (0);
6683 pa_undefine_label ();
6684}
6685
6686/* Just like a normal cons, but when finished we have to undefine
6687 the latest space label. */
6688
6689static void
6690pa_cons (nbytes)
6691 int nbytes;
6692{
6693 cons (nbytes);
6694 pa_undefine_label ();
6695}
6696
6697/* Switch to the data space. As usual delete our label. */
6698
6699static void
6700pa_data (unused)
6701 int unused;
6702{
49863f82 6703#ifdef OBJ_SOM
252b5132
RH		 6704 current_space = is_defined_space ("$PRIVATE$");
6705 current_subspace
6706 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
49863f82 6707#endif
252b5132
RH		 6708 s_data (0);
6709 pa_undefine_label ();
6710}
6711
6712/* Like float_cons, but we need to undefine our label. */
6713
6714static void
6715pa_float_cons (float_type)
6716 int float_type;
6717{
6718 float_cons (float_type);
6719 pa_undefine_label ();
6720}
6721
6722/* Like s_fill, but delete our label when finished. */
6723
6724static void
6725pa_fill (unused)
6726 int unused;
6727{
49863f82 6728#ifdef OBJ_SOM
252b5132
RH		 6729 /* We must have a valid space and subspace. */
6730 pa_check_current_space_and_subspace ();
49863f82 6731#endif
252b5132
RH		 6732
6733 s_fill (0);
6734 pa_undefine_label ();
6735}
6736
6737/* Like lcomm, but delete our label when finished. */
6738
6739static void
6740pa_lcomm (needs_align)
6741 int needs_align;
6742{
49863f82 6743#ifdef OBJ_SOM
252b5132
RH		 6744 /* We must have a valid space and subspace. */
6745 pa_check_current_space_and_subspace ();
49863f82 6746#endif
252b5132
RH		 6747
6748 s_lcomm (needs_align);
6749 pa_undefine_label ();
6750}
6751
6752/* Like lsym, but delete our label when finished. */
6753
6754static void
6755pa_lsym (unused)
6756 int unused;
6757{
49863f82 6758#ifdef OBJ_SOM
252b5132
RH		 6759 /* We must have a valid space and subspace. */
6760 pa_check_current_space_and_subspace ();
49863f82 6761#endif
252b5132
RH		 6762
6763 s_lsym (0);
6764 pa_undefine_label ();
6765}
6766
6767/* Switch to the text space. Like s_text, but delete our
6768 label when finished. */
6769static void
6770pa_text (unused)
6771 int unused;
6772{
49863f82 6773#ifdef OBJ_SOM
252b5132
RH		 6774 current_space = is_defined_space ("$TEXT$");
6775 current_subspace
6776 = pa_subsegment_to_subspace (current_space->sd_seg, 0);
49863f82 6777#endif
252b5132
RH		 6778
6779 s_text (0);
6780 pa_undefine_label ();
6781}
6782
6783/* On the PA relocations which involve function symbols must not be
6784 adjusted. This so that the linker can know when/how to create argument
6785 relocation stubs for indirect calls and calls to static functions.
6786
6787 "T" field selectors create DLT relative fixups for accessing
6788 globals and statics in PIC code; each DLT relative fixup creates
6789 an entry in the DLT table. The entries contain the address of
6790 the final target (eg accessing "foo" would create a DLT entry
6791 with the address of "foo").
6792
6793 Unfortunately, the HP linker doesn't take into account any addend
6794 when generating the DLT; so accessing $LIT$+8 puts the address of
6795 $LIT$ into the DLT rather than the address of $LIT$+8.
6796
6797 The end result is we can't perform relocation symbol reductions for
6798 any fixup which creates entries in the DLT (eg they use "T" field
6799 selectors).
6800
6801 Reject reductions involving symbols with external scope; such
6802 reductions make life a living hell for object file editors.
6803
6804 FIXME. Also reject R_HPPA relocations which are 32bits wide in
6805 the code space. The SOM BFD backend doesn't know how to pull the
6806 right bits out of an instruction. */
6807
6808int
6809hppa_fix_adjustable (fixp)
6810 fixS *fixp;
6811{
6812 struct hppa_fix_struct *hppa_fix;
6813
6814 hppa_fix = (struct hppa_fix_struct *) fixp->tc_fix_data;
6815
6816#ifdef OBJ_SOM
6817 /* Reject reductions of symbols in 32bit relocs. */
6818 if (fixp->fx_r_type == R_HPPA && hppa_fix->fx_r_format == 32)
6819 return 0;
6820
6821 /* Reject reductions of symbols in sym1-sym2 expressions when
6822 the fixup will occur in a CODE subspace.
6823
6824 XXX FIXME: Long term we probably want to reject all of these;
6825 for example reducing in the debug section would lose if we ever
6826 supported using the optimizing hp linker. */
6827 if (fixp->fx_addsy
6828 && fixp->fx_subsy
6829 && (hppa_fix->segment->flags & SEC_CODE))
6830 {
6831 /* Apparently sy_used_in_reloc never gets set for sub symbols. */
398e8c25 6832 symbol_mark_used_in_reloc (fixp->fx_subsy);
252b5132
RH		 6833 return 0;
6834 }
6835
6836 /* We can't adjust any relocs that use LR% and RR% field selectors.
6837 That confuses the HP linker. */
6838 if (hppa_fix->fx_r_field == e_lrsel
6839 || hppa_fix->fx_r_field == e_rrsel
6840 || hppa_fix->fx_r_field == e_nlrsel)
6841 return 0;
6842#endif
6843
6844 /* Reject reductions of symbols in DLT relative relocs,
6845 relocations with plabels. */
6846 if (hppa_fix->fx_r_field == e_tsel
6847 || hppa_fix->fx_r_field == e_ltsel
6848 || hppa_fix->fx_r_field == e_rtsel
6849 || hppa_fix->fx_r_field == e_psel
6850 || hppa_fix->fx_r_field == e_rpsel
6851 || hppa_fix->fx_r_field == e_lpsel)
6852 return 0;
6853
a0f75b47 6854 if (fixp->fx_addsy && S_IS_EXTERNAL (fixp->fx_addsy))
252b5132
RH		 6855 return 0;
6856
6857 /* Reject absolute calls (jumps). */
6858 if (hppa_fix->fx_r_type == R_HPPA_ABS_CALL)
6859 return 0;
6860
6861 /* Reject reductions of function symbols. */
a0f75b47 6862 if (fixp->fx_addsy == 0 || ! S_IS_FUNCTION (fixp->fx_addsy))
252b5132
RH		 6863 return 1;
6864
6865 return 0;
6866}
6867
6868/* Return nonzero if the fixup in FIXP will require a relocation,
6869 even it if appears that the fixup could be completely handled
6870 within GAS. */
6871
6872int
6873hppa_force_relocation (fixp)
6874 fixS *fixp;
6875{
6876 struct hppa_fix_struct *hppa_fixp;
6877 int distance;
6878
6879 hppa_fixp = (struct hppa_fix_struct *) fixp->tc_fix_data;
6880#ifdef OBJ_SOM
6881 if (fixp->fx_r_type == R_HPPA_ENTRY || fixp->fx_r_type == R_HPPA_EXIT
6882 || fixp->fx_r_type == R_HPPA_BEGIN_BRTAB
6883 || fixp->fx_r_type == R_HPPA_END_BRTAB
6884 || fixp->fx_r_type == R_HPPA_BEGIN_TRY
6885 || fixp->fx_r_type == R_HPPA_END_TRY
6886 || (fixp->fx_addsy != NULL && fixp->fx_subsy != NULL
6887 && (hppa_fixp->segment->flags & SEC_CODE) != 0))
6888 return 1;
6889#endif
6890
6891#define arg_reloc_stub_needed(CALLER, CALLEE) \
6892 ((CALLEE) && (CALLER) && ((CALLEE) != (CALLER)))
6893
49863f82 6894#ifdef OBJ_SOM
252b5132
RH		 6895 /* It is necessary to force PC-relative calls/jumps to have a relocation
6896 entry if they're going to need either a argument relocation or long
6897 call stub. FIXME. Can't we need the same for absolute calls? */
6898 if (fixp->fx_pcrel && fixp->fx_addsy
6899 && (arg_reloc_stub_needed ((long) ((obj_symbol_type *)
a0f75b47
ILT		 6900 symbol_get_bfdsym (fixp->fx_addsy))->tc_data.ap.hppa_arg_reloc,
6901 hppa_fixp->fx_arg_reloc)))
252b5132 6902 return 1;
49863f82 6903#endif
252b5132
RH		 6904 distance = (fixp->fx_offset + S_GET_VALUE (fixp->fx_addsy)
6905 - md_pcrel_from (fixp));
6906 /* Now check and see if we're going to need a long-branch stub. */
6907 if (fixp->fx_r_type == R_HPPA_PCREL_CALL
6908 && (distance > 262143 || distance < -262144))
6909 return 1;
6910
6911 if (fixp->fx_r_type == R_HPPA_ABS_CALL)
6912 return 1;
6913#undef arg_reloc_stub_needed
6914
6915 /* No need (yet) to force another relocations to be emitted. */
6916 return 0;
6917}
6918
6919/* Now for some ELF specific code. FIXME. */
6920#ifdef OBJ_ELF
6921/* Mark the end of a function so that it's possible to compute
6922 the size of the function in hppa_elf_final_processing. */
6923
6924static void
6925hppa_elf_mark_end_of_function ()
6926{
6927 /* ELF does not have EXIT relocations. All we do is create a
6928 temporary symbol marking the end of the function. */
6929 char *name = (char *)
6930 xmalloc (strlen ("L$\001end_") +
6931 strlen (S_GET_NAME (last_call_info->start_symbol)) + 1);
6932
6933 if (name)
6934 {
6935 symbolS *symbolP;
6936
6937 strcpy (name, "L$\001end_");
6938 strcat (name, S_GET_NAME (last_call_info->start_symbol));
6939
6940 /* If we have a .exit followed by a .procend, then the
6941 symbol will have already been defined. */
6942 symbolP = symbol_find (name);
6943 if (symbolP)
6944 {
6945 /* The symbol has already been defined! This can
6946 happen if we have a .exit followed by a .procend.
6947
6948 This is *not* an error. All we want to do is free
6949 the memory we just allocated for the name and continue. */
6950 xfree (name);
6951 }
6952 else
6953 {
6954 /* symbol value should be the offset of the
6955 last instruction of the function */
6956 symbolP = symbol_new (name, now_seg, (valueT) (frag_now_fix () - 4),
6957 frag_now);
6958
6959 assert (symbolP);
a0f75b47 6960 S_CLEAR_EXTERNAL (symbolP);
252b5132
RH		 6961 symbol_table_insert (symbolP);
6962 }
6963
6964 if (symbolP)
6965 last_call_info->end_symbol = symbolP;
6966 else
6967 as_bad (_("Symbol '%s' could not be created."), name);
6968
6969 }
6970 else
6971 as_bad (_("No memory for symbol name."));
6972
6973}
6974
6975/* For ELF, this function serves one purpose: to setup the st_size
6976 field of STT_FUNC symbols. To do this, we need to scan the
6977 call_info structure list, determining st_size in by taking the
6978 difference in the address of the beginning/end marker symbols. */
6979
6980void
6981elf_hppa_final_processing ()
6982{
6983 struct call_info *call_info_pointer;
6984
6985 for (call_info_pointer = call_info_root;
6986 call_info_pointer;
6987 call_info_pointer = call_info_pointer->ci_next)
6988 {
6989 elf_symbol_type *esym
a0f75b47
ILT		 6990 = ((elf_symbol_type *)
6991 symbol_get_bfdsym (call_info_pointer->start_symbol));
252b5132
RH		 6992 esym->internal_elf_sym.st_size =
6993 S_GET_VALUE (call_info_pointer->end_symbol)
6994 - S_GET_VALUE (call_info_pointer->start_symbol) + 4;
6995 }
6996}
6997#endif
A mirror of the official binutils-gdb repository