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[deliverable/binutils-gdb.git] / gas / config / tc-ppc.c
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252b5132 1/* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
f7e42eb4 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2c1c4c62 3 Free Software Foundation, Inc.
252b5132
RH		 4 Written by Ian Lance Taylor, Cygnus Support.
5
6 This file is part of GAS, the GNU Assembler.
7
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
81d4177b 21 02111-1307, USA. */
252b5132
RH		 22
23#include <stdio.h>
24#include <ctype.h>
25#include "as.h"
26#include "subsegs.h"
27
28#include "opcode/ppc.h"
29
30#ifdef OBJ_ELF
31#include "elf/ppc.h"
5d6f4f16 32#include "dwarf2dbg.h"
252b5132
RH		 33#endif
34
35#ifdef TE_PE
36#include "coff/pe.h"
37#endif
38
39/* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
40
41/* Tell the main code what the endianness is. */
42extern int target_big_endian;
43
44/* Whether or not, we've set target_big_endian. */
45static int set_target_endian = 0;
46
47/* Whether to use user friendly register names. */
48#ifndef TARGET_REG_NAMES_P
49#ifdef TE_PE
50#define TARGET_REG_NAMES_P true
51#else
52#define TARGET_REG_NAMES_P false
53#endif
54#endif
55
56static boolean reg_names_p = TARGET_REG_NAMES_P;
57
58static boolean register_name PARAMS ((expressionS *));
59static void ppc_set_cpu PARAMS ((void));
60static unsigned long ppc_insert_operand
61 PARAMS ((unsigned long insn, const struct powerpc_operand *operand,
62 offsetT val, char *file, unsigned int line));
63static void ppc_macro PARAMS ((char *str, const struct powerpc_macro *macro));
64static void ppc_byte PARAMS ((int));
65static int ppc_is_toc_sym PARAMS ((symbolS *sym));
66static void ppc_tc PARAMS ((int));
67
68#ifdef OBJ_XCOFF
69static void ppc_comm PARAMS ((int));
70static void ppc_bb PARAMS ((int));
71static void ppc_bc PARAMS ((int));
72static void ppc_bf PARAMS ((int));
73static void ppc_biei PARAMS ((int));
74static void ppc_bs PARAMS ((int));
75static void ppc_eb PARAMS ((int));
76static void ppc_ec PARAMS ((int));
77static void ppc_ef PARAMS ((int));
78static void ppc_es PARAMS ((int));
79static void ppc_csect PARAMS ((int));
80static void ppc_change_csect PARAMS ((symbolS *));
81static void ppc_function PARAMS ((int));
82static void ppc_extern PARAMS ((int));
83static void ppc_lglobl PARAMS ((int));
84static void ppc_section PARAMS ((int));
85static void ppc_named_section PARAMS ((int));
86static void ppc_stabx PARAMS ((int));
87static void ppc_rename PARAMS ((int));
88static void ppc_toc PARAMS ((int));
89static void ppc_xcoff_cons PARAMS ((int));
7f6d05e8 90static void ppc_machine PARAMS ((int));
252b5132
RH		 91static void ppc_vbyte PARAMS ((int));
92#endif
93
94#ifdef OBJ_ELF
95static bfd_reloc_code_real_type ppc_elf_suffix PARAMS ((char **, expressionS *));
96static void ppc_elf_cons PARAMS ((int));
97static void ppc_elf_rdata PARAMS ((int));
98static void ppc_elf_lcomm PARAMS ((int));
99static void ppc_elf_validate_fix PARAMS ((fixS *, segT));
100#endif
101
102#ifdef TE_PE
103static void ppc_set_current_section PARAMS ((segT));
104static void ppc_previous PARAMS ((int));
105static void ppc_pdata PARAMS ((int));
106static void ppc_ydata PARAMS ((int));
107static void ppc_reldata PARAMS ((int));
108static void ppc_rdata PARAMS ((int));
109static void ppc_ualong PARAMS ((int));
110static void ppc_znop PARAMS ((int));
111static void ppc_pe_comm PARAMS ((int));
112static void ppc_pe_section PARAMS ((int));
113static void ppc_pe_function PARAMS ((int));
114static void ppc_pe_tocd PARAMS ((int));
115#endif
116\f
117/* Generic assembler global variables which must be defined by all
118 targets. */
119
120#ifdef OBJ_ELF
121/* This string holds the chars that always start a comment. If the
122 pre-processor is disabled, these aren't very useful. The macro
123 tc_comment_chars points to this. We use this, rather than the
124 usual comment_chars, so that we can switch for Solaris conventions. */
125static const char ppc_solaris_comment_chars[] = "#!";
126static const char ppc_eabi_comment_chars[] = "#";
127
128#ifdef TARGET_SOLARIS_COMMENT
129const char *ppc_comment_chars = ppc_solaris_comment_chars;
130#else
131const char *ppc_comment_chars = ppc_eabi_comment_chars;
132#endif
133#else
134const char comment_chars[] = "#";
135#endif
136
137/* Characters which start a comment at the beginning of a line. */
138const char line_comment_chars[] = "#";
139
140/* Characters which may be used to separate multiple commands on a
141 single line. */
142const char line_separator_chars[] = ";";
143
144/* Characters which are used to indicate an exponent in a floating
145 point number. */
146const char EXP_CHARS[] = "eE";
147
148/* Characters which mean that a number is a floating point constant,
149 as in 0d1.0. */
150const char FLT_CHARS[] = "dD";
151\f
152/* The target specific pseudo-ops which we support. */
153
154const pseudo_typeS md_pseudo_table[] =
155{
156 /* Pseudo-ops which must be overridden. */
157 { "byte", ppc_byte, 0 },
158
159#ifdef OBJ_XCOFF
160 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
161 legitimately belong in the obj-*.c file. However, XCOFF is based
162 on COFF, and is only implemented for the RS/6000. We just use
163 obj-coff.c, and add what we need here. */
164 { "comm", ppc_comm, 0 },
165 { "lcomm", ppc_comm, 1 },
166 { "bb", ppc_bb, 0 },
167 { "bc", ppc_bc, 0 },
168 { "bf", ppc_bf, 0 },
169 { "bi", ppc_biei, 0 },
170 { "bs", ppc_bs, 0 },
171 { "csect", ppc_csect, 0 },
172 { "data", ppc_section, 'd' },
173 { "eb", ppc_eb, 0 },
174 { "ec", ppc_ec, 0 },
175 { "ef", ppc_ef, 0 },
176 { "ei", ppc_biei, 1 },
177 { "es", ppc_es, 0 },
178 { "extern", ppc_extern, 0 },
179 { "function", ppc_function, 0 },
180 { "lglobl", ppc_lglobl, 0 },
181 { "rename", ppc_rename, 0 },
182 { "section", ppc_named_section, 0 },
183 { "stabx", ppc_stabx, 0 },
184 { "text", ppc_section, 't' },
185 { "toc", ppc_toc, 0 },
186 { "long", ppc_xcoff_cons, 2 },
7f6d05e8 187 { "llong", ppc_xcoff_cons, 3 },
252b5132
RH		 188 { "word", ppc_xcoff_cons, 1 },
189 { "short", ppc_xcoff_cons, 1 },
190 { "vbyte", ppc_vbyte, 0 },
7f6d05e8 191 { "machine", ppc_machine, 0 },
252b5132
RH		 192#endif
193
194#ifdef OBJ_ELF
195 { "long", ppc_elf_cons, 4 },
196 { "word", ppc_elf_cons, 2 },
197 { "short", ppc_elf_cons, 2 },
198 { "rdata", ppc_elf_rdata, 0 },
199 { "rodata", ppc_elf_rdata, 0 },
200 { "lcomm", ppc_elf_lcomm, 0 },
5d6f4f16
GK		 201 { "file", dwarf2_directive_file, 0 },
202 { "loc", dwarf2_directive_loc, 0 },
252b5132
RH		 203#endif
204
205#ifdef TE_PE
206 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format */
207 { "previous", ppc_previous, 0 },
208 { "pdata", ppc_pdata, 0 },
209 { "ydata", ppc_ydata, 0 },
210 { "reldata", ppc_reldata, 0 },
211 { "rdata", ppc_rdata, 0 },
212 { "ualong", ppc_ualong, 0 },
213 { "znop", ppc_znop, 0 },
214 { "comm", ppc_pe_comm, 0 },
215 { "lcomm", ppc_pe_comm, 1 },
216 { "section", ppc_pe_section, 0 },
217 { "function", ppc_pe_function,0 },
218 { "tocd", ppc_pe_tocd, 0 },
219#endif
220
221 /* This pseudo-op is used even when not generating XCOFF output. */
222 { "tc", ppc_tc, 0 },
223
224 { NULL, NULL, 0 }
225};
226
227\f
228/* Predefined register names if -mregnames (or default for Windows NT). */
229/* In general, there are lots of them, in an attempt to be compatible */
230/* with a number of other Windows NT assemblers. */
231
232/* Structure to hold information about predefined registers. */
233struct pd_reg
234 {
235 char *name;
236 int value;
237 };
238
239/* List of registers that are pre-defined:
240
241 Each general register has predefined names of the form:
242 1. r<reg_num> which has the value <reg_num>.
243 2. r.<reg_num> which has the value <reg_num>.
244
252b5132
RH		 245 Each floating point register has predefined names of the form:
246 1. f<reg_num> which has the value <reg_num>.
247 2. f.<reg_num> which has the value <reg_num>.
248
7a899fff
C		 249 Each vector unit register has predefined names of the form:
250 1. v<reg_num> which has the value <reg_num>.
251 2. v.<reg_num> which has the value <reg_num>.
252
252b5132
RH		 253 Each condition register has predefined names of the form:
254 1. cr<reg_num> which has the value <reg_num>.
255 2. cr.<reg_num> which has the value <reg_num>.
256
257 There are individual registers as well:
258 sp or r.sp has the value 1
259 rtoc or r.toc has the value 2
260 fpscr has the value 0
261 xer has the value 1
262 lr has the value 8
263 ctr has the value 9
264 pmr has the value 0
265 dar has the value 19
266 dsisr has the value 18
267 dec has the value 22
268 sdr1 has the value 25
269 srr0 has the value 26
270 srr1 has the value 27
271
81d4177b 272 The table is sorted. Suitable for searching by a binary search. */
252b5132
RH		 273
274static const struct pd_reg pre_defined_registers[] =
275{
276 { "cr.0", 0 }, /* Condition Registers */
277 { "cr.1", 1 },
278 { "cr.2", 2 },
279 { "cr.3", 3 },
280 { "cr.4", 4 },
281 { "cr.5", 5 },
282 { "cr.6", 6 },
283 { "cr.7", 7 },
284
285 { "cr0", 0 },
286 { "cr1", 1 },
287 { "cr2", 2 },
288 { "cr3", 3 },
289 { "cr4", 4 },
290 { "cr5", 5 },
291 { "cr6", 6 },
292 { "cr7", 7 },
293
294 { "ctr", 9 },
295
296 { "dar", 19 }, /* Data Access Register */
297 { "dec", 22 }, /* Decrementer */
298 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
299
300 { "f.0", 0 }, /* Floating point registers */
81d4177b
KH		 301 { "f.1", 1 },
302 { "f.10", 10 },
303 { "f.11", 11 },
304 { "f.12", 12 },
305 { "f.13", 13 },
306 { "f.14", 14 },
307 { "f.15", 15 },
308 { "f.16", 16 },
309 { "f.17", 17 },
310 { "f.18", 18 },
311 { "f.19", 19 },
312 { "f.2", 2 },
313 { "f.20", 20 },
314 { "f.21", 21 },
315 { "f.22", 22 },
316 { "f.23", 23 },
317 { "f.24", 24 },
318 { "f.25", 25 },
319 { "f.26", 26 },
320 { "f.27", 27 },
321 { "f.28", 28 },
322 { "f.29", 29 },
323 { "f.3", 3 },
252b5132
RH		 324 { "f.30", 30 },
325 { "f.31", 31 },
81d4177b
KH		 326 { "f.4", 4 },
327 { "f.5", 5 },
328 { "f.6", 6 },
329 { "f.7", 7 },
330 { "f.8", 8 },
331 { "f.9", 9 },
332
333 { "f0", 0 },
334 { "f1", 1 },
335 { "f10", 10 },
336 { "f11", 11 },
337 { "f12", 12 },
338 { "f13", 13 },
339 { "f14", 14 },
340 { "f15", 15 },
341 { "f16", 16 },
342 { "f17", 17 },
343 { "f18", 18 },
344 { "f19", 19 },
345 { "f2", 2 },
346 { "f20", 20 },
347 { "f21", 21 },
348 { "f22", 22 },
349 { "f23", 23 },
350 { "f24", 24 },
351 { "f25", 25 },
352 { "f26", 26 },
353 { "f27", 27 },
354 { "f28", 28 },
355 { "f29", 29 },
356 { "f3", 3 },
252b5132
RH		 357 { "f30", 30 },
358 { "f31", 31 },
81d4177b
KH		 359 { "f4", 4 },
360 { "f5", 5 },
361 { "f6", 6 },
362 { "f7", 7 },
363 { "f8", 8 },
364 { "f9", 9 },
252b5132
RH		 365
366 { "fpscr", 0 },
367
368 { "lr", 8 }, /* Link Register */
369
370 { "pmr", 0 },
371
372 { "r.0", 0 }, /* General Purpose Registers */
373 { "r.1", 1 },
374 { "r.10", 10 },
375 { "r.11", 11 },
376 { "r.12", 12 },
377 { "r.13", 13 },
378 { "r.14", 14 },
379 { "r.15", 15 },
380 { "r.16", 16 },
381 { "r.17", 17 },
382 { "r.18", 18 },
383 { "r.19", 19 },
384 { "r.2", 2 },
385 { "r.20", 20 },
386 { "r.21", 21 },
387 { "r.22", 22 },
388 { "r.23", 23 },
389 { "r.24", 24 },
390 { "r.25", 25 },
391 { "r.26", 26 },
392 { "r.27", 27 },
393 { "r.28", 28 },
394 { "r.29", 29 },
395 { "r.3", 3 },
396 { "r.30", 30 },
397 { "r.31", 31 },
398 { "r.4", 4 },
399 { "r.5", 5 },
400 { "r.6", 6 },
401 { "r.7", 7 },
402 { "r.8", 8 },
403 { "r.9", 9 },
404
405 { "r.sp", 1 }, /* Stack Pointer */
406
407 { "r.toc", 2 }, /* Pointer to the table of contents */
408
409 { "r0", 0 }, /* More general purpose registers */
410 { "r1", 1 },
411 { "r10", 10 },
412 { "r11", 11 },
413 { "r12", 12 },
414 { "r13", 13 },
415 { "r14", 14 },
416 { "r15", 15 },
417 { "r16", 16 },
418 { "r17", 17 },
419 { "r18", 18 },
420 { "r19", 19 },
421 { "r2", 2 },
422 { "r20", 20 },
423 { "r21", 21 },
424 { "r22", 22 },
425 { "r23", 23 },
426 { "r24", 24 },
427 { "r25", 25 },
428 { "r26", 26 },
429 { "r27", 27 },
430 { "r28", 28 },
431 { "r29", 29 },
432 { "r3", 3 },
433 { "r30", 30 },
434 { "r31", 31 },
435 { "r4", 4 },
436 { "r5", 5 },
437 { "r6", 6 },
438 { "r7", 7 },
439 { "r8", 8 },
440 { "r9", 9 },
441
442 { "rtoc", 2 }, /* Table of contents */
443
444 { "sdr1", 25 }, /* Storage Description Register 1 */
445
446 { "sp", 1 },
447
448 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
449 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
81d4177b 450
7a899fff 451 { "v.0", 0 }, /* Vector registers */
81d4177b
KH		 452 { "v.1", 1 },
453 { "v.10", 10 },
454 { "v.11", 11 },
455 { "v.12", 12 },
456 { "v.13", 13 },
457 { "v.14", 14 },
458 { "v.15", 15 },
459 { "v.16", 16 },
460 { "v.17", 17 },
461 { "v.18", 18 },
462 { "v.19", 19 },
463 { "v.2", 2 },
464 { "v.20", 20 },
465 { "v.21", 21 },
466 { "v.22", 22 },
467 { "v.23", 23 },
468 { "v.24", 24 },
469 { "v.25", 25 },
470 { "v.26", 26 },
471 { "v.27", 27 },
472 { "v.28", 28 },
473 { "v.29", 29 },
474 { "v.3", 3 },
7a899fff
C		 475 { "v.30", 30 },
476 { "v.31", 31 },
81d4177b
KH		 477 { "v.4", 4 },
478 { "v.5", 5 },
479 { "v.6", 6 },
480 { "v.7", 7 },
481 { "v.8", 8 },
482 { "v.9", 9 },
7a899fff
C		 483
484 { "v0", 0 },
81d4177b
KH		 485 { "v1", 1 },
486 { "v10", 10 },
487 { "v11", 11 },
488 { "v12", 12 },
489 { "v13", 13 },
490 { "v14", 14 },
491 { "v15", 15 },
492 { "v16", 16 },
493 { "v17", 17 },
494 { "v18", 18 },
495 { "v19", 19 },
496 { "v2", 2 },
497 { "v20", 20 },
498 { "v21", 21 },
499 { "v22", 22 },
500 { "v23", 23 },
501 { "v24", 24 },
502 { "v25", 25 },
503 { "v26", 26 },
504 { "v27", 27 },
505 { "v28", 28 },
506 { "v29", 29 },
507 { "v3", 3 },
7a899fff
C		 508 { "v30", 30 },
509 { "v31", 31 },
81d4177b
KH		 510 { "v4", 4 },
511 { "v5", 5 },
512 { "v6", 6 },
513 { "v7", 7 },
514 { "v8", 8 },
7a899fff 515 { "v9", 9 },
252b5132
RH		 516
517 { "xer", 1 },
518
519};
520
bc805888 521#define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
252b5132
RH		 522
523/* Given NAME, find the register number associated with that name, return
524 the integer value associated with the given name or -1 on failure. */
525
526static int reg_name_search
527 PARAMS ((const struct pd_reg *, int, const char * name));
528
529static int
530reg_name_search (regs, regcount, name)
531 const struct pd_reg *regs;
532 int regcount;
533 const char *name;
534{
535 int middle, low, high;
536 int cmp;
537
538 low = 0;
539 high = regcount - 1;
540
541 do
542 {
543 middle = (low + high) / 2;
544 cmp = strcasecmp (name, regs[middle].name);
545 if (cmp < 0)
546 high = middle - 1;
547 else if (cmp > 0)
548 low = middle + 1;
549 else
550 return regs[middle].value;
551 }
552 while (low <= high);
553
554 return -1;
555}
556
557/*
558 * Summary of register_name().
559 *
560 * in: Input_line_pointer points to 1st char of operand.
561 *
562 * out: A expressionS.
563 * The operand may have been a register: in this case, X_op == O_register,
564 * X_add_number is set to the register number, and truth is returned.
565 * Input_line_pointer->(next non-blank) char after operand, or is in its
566 * original state.
567 */
568
569static boolean
570register_name (expressionP)
571 expressionS *expressionP;
572{
573 int reg_number;
574 char *name;
575 char *start;
576 char c;
577
578 /* Find the spelling of the operand */
579 start = name = input_line_pointer;
580 if (name[0] == '%' && isalpha (name[1]))
581 name = ++input_line_pointer;
582
583 else if (!reg_names_p || !isalpha (name[0]))
584 return false;
585
586 c = get_symbol_end ();
587 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
588
589 /* look to see if it's in the register table */
81d4177b 590 if (reg_number >= 0)
252b5132
RH		 591 {
592 expressionP->X_op = O_register;
593 expressionP->X_add_number = reg_number;
81d4177b 594
252b5132
RH		 595 /* make the rest nice */
596 expressionP->X_add_symbol = NULL;
597 expressionP->X_op_symbol = NULL;
598 *input_line_pointer = c; /* put back the delimiting char */
599 return true;
600 }
601 else
602 {
603 /* reset the line as if we had not done anything */
604 *input_line_pointer = c; /* put back the delimiting char */
605 input_line_pointer = start; /* reset input_line pointer */
606 return false;
607 }
608}
609\f
610/* This function is called for each symbol seen in an expression. It
611 handles the special parsing which PowerPC assemblers are supposed
612 to use for condition codes. */
613
614/* Whether to do the special parsing. */
615static boolean cr_operand;
616
617/* Names to recognize in a condition code. This table is sorted. */
618static const struct pd_reg cr_names[] =
619{
620 { "cr0", 0 },
621 { "cr1", 1 },
622 { "cr2", 2 },
623 { "cr3", 3 },
624 { "cr4", 4 },
625 { "cr5", 5 },
626 { "cr6", 6 },
627 { "cr7", 7 },
628 { "eq", 2 },
629 { "gt", 1 },
630 { "lt", 0 },
631 { "so", 3 },
632 { "un", 3 }
633};
634
635/* Parsing function. This returns non-zero if it recognized an
636 expression. */
637
638int
639ppc_parse_name (name, expr)
640 const char *name;
641 expressionS *expr;
642{
643 int val;
644
645 if (! cr_operand)
646 return 0;
647
648 val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0],
649 name);
650 if (val < 0)
651 return 0;
652
653 expr->X_op = O_constant;
654 expr->X_add_number = val;
655
656 return 1;
657}
658\f
659/* Local variables. */
660
661/* The type of processor we are assembling for. This is one or more
662 of the PPC_OPCODE flags defined in opcode/ppc.h. */
663static int ppc_cpu = 0;
664
665/* The size of the processor we are assembling for. This is either
666 PPC_OPCODE_32 or PPC_OPCODE_64. */
92161534 667static unsigned long ppc_size = PPC_OPCODE_32;
252b5132 668
7f6d05e8
CP		 669/* Whether to target xcoff64 */
670static int ppc_xcoff64 = 0;
671
252b5132
RH		 672/* Opcode hash table. */
673static struct hash_control *ppc_hash;
674
675/* Macro hash table. */
676static struct hash_control *ppc_macro_hash;
677
678#ifdef OBJ_ELF
679/* What type of shared library support to use */
5d6f4f16 680static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE;
252b5132
RH		 681
682/* Flags to set in the elf header */
683static flagword ppc_flags = 0;
684
685/* Whether this is Solaris or not. */
686#ifdef TARGET_SOLARIS_COMMENT
687#define SOLARIS_P true
688#else
689#define SOLARIS_P false
690#endif
691
692static boolean msolaris = SOLARIS_P;
693#endif
694
695#ifdef OBJ_XCOFF
696
697/* The RS/6000 assembler uses the .csect pseudo-op to generate code
698 using a bunch of different sections. These assembler sections,
699 however, are all encompassed within the .text or .data sections of
700 the final output file. We handle this by using different
701 subsegments within these main segments. */
702
703/* Next subsegment to allocate within the .text segment. */
704static subsegT ppc_text_subsegment = 2;
705
706/* Linked list of csects in the text section. */
707static symbolS *ppc_text_csects;
708
709/* Next subsegment to allocate within the .data segment. */
710static subsegT ppc_data_subsegment = 2;
711
712/* Linked list of csects in the data section. */
713static symbolS *ppc_data_csects;
714
715/* The current csect. */
716static symbolS *ppc_current_csect;
717
718/* The RS/6000 assembler uses a TOC which holds addresses of functions
719 and variables. Symbols are put in the TOC with the .tc pseudo-op.
720 A special relocation is used when accessing TOC entries. We handle
721 the TOC as a subsegment within the .data segment. We set it up if
722 we see a .toc pseudo-op, and save the csect symbol here. */
723static symbolS *ppc_toc_csect;
724
725/* The first frag in the TOC subsegment. */
726static fragS *ppc_toc_frag;
727
728/* The first frag in the first subsegment after the TOC in the .data
729 segment. NULL if there are no subsegments after the TOC. */
730static fragS *ppc_after_toc_frag;
731
732/* The current static block. */
733static symbolS *ppc_current_block;
734
735/* The COFF debugging section; set by md_begin. This is not the
736 .debug section, but is instead the secret BFD section which will
737 cause BFD to set the section number of a symbol to N_DEBUG. */
738static asection *ppc_coff_debug_section;
739
740#endif /* OBJ_XCOFF */
741
742#ifdef TE_PE
743
744/* Various sections that we need for PE coff support. */
745static segT ydata_section;
746static segT pdata_section;
747static segT reldata_section;
748static segT rdata_section;
749static segT tocdata_section;
750
81d4177b 751/* The current section and the previous section. See ppc_previous. */
252b5132
RH		 752static segT ppc_previous_section;
753static segT ppc_current_section;
754
755#endif /* TE_PE */
756
757#ifdef OBJ_ELF
758symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
759#endif /* OBJ_ELF */
760\f
761#ifdef OBJ_ELF
762CONST char *md_shortopts = "b:l:usm:K:VQ:";
763#else
764CONST char *md_shortopts = "um:";
765#endif
766struct option md_longopts[] = {
767 {NULL, no_argument, NULL, 0}
768};
bc805888 769size_t md_longopts_size = sizeof (md_longopts);
252b5132
RH		 770
771int
772md_parse_option (c, arg)
773 int c;
774 char *arg;
775{
776 switch (c)
777 {
778 case 'u':
779 /* -u means that any undefined symbols should be treated as
780 external, which is the default for gas anyhow. */
781 break;
782
783#ifdef OBJ_ELF
784 case 'l':
785 /* Solaris as takes -le (presumably for little endian). For completeness
786 sake, recognize -be also. */
787 if (strcmp (arg, "e") == 0)
788 {
789 target_big_endian = 0;
790 set_target_endian = 1;
791 }
792 else
793 return 0;
794
795 break;
796
797 case 'b':
798 if (strcmp (arg, "e") == 0)
799 {
800 target_big_endian = 1;
801 set_target_endian = 1;
802 }
803 else
804 return 0;
805
806 break;
807
808 case 'K':
809 /* Recognize -K PIC */
810 if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
811 {
812 shlib = SHLIB_PIC;
813 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
814 }
815 else
816 return 0;
817
818 break;
819#endif
820
7f6d05e8
CP		 821 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
822 case 'a':
823 if (strcmp (arg, "64") == 0)
824 ppc_xcoff64 = 1;
825 else if (strcmp (arg, "32") == 0)
826 ppc_xcoff64 = 0;
827 else
828 return 0;
829 break;
81d4177b 830
252b5132
RH		 831 case 'm':
832 /* -mpwrx and -mpwr2 mean to assemble for the IBM POWER/2
833 (RIOS2). */
834 if (strcmp (arg, "pwrx") == 0 || strcmp (arg, "pwr2") == 0)
835 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_POWER2;
836 /* -mpwr means to assemble for the IBM POWER (RIOS1). */
837 else if (strcmp (arg, "pwr") == 0)
838 ppc_cpu = PPC_OPCODE_POWER;
839 /* -m601 means to assemble for the Motorola PowerPC 601, which includes
81d4177b 840 instructions that are holdovers from the Power. */
252b5132
RH		 841 else if (strcmp (arg, "601") == 0)
842 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_601;
843 /* -mppc, -mppc32, -m603, and -m604 mean to assemble for the
844 Motorola PowerPC 603/604. */
845 else if (strcmp (arg, "ppc") == 0
846 || strcmp (arg, "ppc32") == 0
847 || strcmp (arg, "403") == 0
e0c21649 848 || strcmp (arg, "405") == 0
252b5132
RH		 849 || strcmp (arg, "603") == 0
850 || strcmp (arg, "604") == 0)
851 ppc_cpu = PPC_OPCODE_PPC;
7a899fff
C		 852 else if (strcmp (arg, "7400") == 0)
853 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC;
252b5132
RH		 854 /* -mppc64 and -m620 mean to assemble for the 64-bit PowerPC
855 620. */
856 else if (strcmp (arg, "ppc64") == 0 || strcmp (arg, "620") == 0)
857 {
858 ppc_cpu = PPC_OPCODE_PPC;
859 ppc_size = PPC_OPCODE_64;
860 }
d0e9a01c
RH		 861 else if (strcmp (arg, "ppc64bridge") == 0)
862 {
863 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_64_BRIDGE;
864 ppc_size = PPC_OPCODE_64;
865 }
252b5132
RH		 866 /* -mcom means assemble for the common intersection between Power
867 and PowerPC. At present, we just allow the union, rather
868 than the intersection. */
869 else if (strcmp (arg, "com") == 0)
870 ppc_cpu = PPC_OPCODE_COMMON;
871 /* -many means to assemble for any architecture (PWR/PWRX/PPC). */
872 else if (strcmp (arg, "any") == 0)
873 ppc_cpu = PPC_OPCODE_ANY;
874
875 else if (strcmp (arg, "regnames") == 0)
876 reg_names_p = true;
877
878 else if (strcmp (arg, "no-regnames") == 0)
879 reg_names_p = false;
880
881#ifdef OBJ_ELF
882 /* -mrelocatable/-mrelocatable-lib -- warn about initializations that require relocation */
883 else if (strcmp (arg, "relocatable") == 0)
884 {
5d6f4f16 885 shlib = SHLIB_MRELOCATABLE;
252b5132
RH		 886 ppc_flags |= EF_PPC_RELOCATABLE;
887 }
888
889 else if (strcmp (arg, "relocatable-lib") == 0)
890 {
5d6f4f16 891 shlib = SHLIB_MRELOCATABLE;
252b5132
RH		 892 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
893 }
894
895 /* -memb, set embedded bit */
896 else if (strcmp (arg, "emb") == 0)
897 ppc_flags |= EF_PPC_EMB;
898
899 /* -mlittle/-mbig set the endianess */
900 else if (strcmp (arg, "little") == 0 || strcmp (arg, "little-endian") == 0)
901 {
902 target_big_endian = 0;
903 set_target_endian = 1;
904 }
905
906 else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
907 {
908 target_big_endian = 1;
909 set_target_endian = 1;
910 }
911
912 else if (strcmp (arg, "solaris") == 0)
913 {
914 msolaris = true;
915 ppc_comment_chars = ppc_solaris_comment_chars;
916 }
917
918 else if (strcmp (arg, "no-solaris") == 0)
919 {
920 msolaris = false;
921 ppc_comment_chars = ppc_eabi_comment_chars;
922 }
923#endif
924 else
925 {
926 as_bad (_("invalid switch -m%s"), arg);
927 return 0;
928 }
929 break;
930
931#ifdef OBJ_ELF
932 /* -V: SVR4 argument to print version ID. */
933 case 'V':
934 print_version_id ();
935 break;
936
937 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
938 should be emitted or not. FIXME: Not implemented. */
939 case 'Q':
940 break;
941
942 /* Solaris takes -s to specify that .stabs go in a .stabs section,
943 rather than .stabs.excl, which is ignored by the linker.
944 FIXME: Not implemented. */
945 case 's':
946 if (arg)
947 return 0;
948
949 break;
950#endif
951
952 default:
953 return 0;
954 }
955
956 return 1;
957}
958
959void
960md_show_usage (stream)
961 FILE *stream;
962{
bc805888 963 fprintf (stream, _("\
252b5132
RH		 964PowerPC options:\n\
965-u ignored\n\
966-mpwrx, -mpwr2 generate code for IBM POWER/2 (RIOS2)\n\
967-mpwr generate code for IBM POWER (RIOS1)\n\
968-m601 generate code for Motorola PowerPC 601\n\
e0c21649 969-mppc, -mppc32, -m403, -m405, -m603, -m604\n\
252b5132
RH		 970 generate code for Motorola PowerPC 603/604\n\
971-mppc64, -m620 generate code for Motorola PowerPC 620\n\
d0e9a01c 972-mppc64bridge generate code for PowerPC 64, including bridge insns\n\
252b5132
RH		 973-mcom generate code Power/PowerPC common instructions\n\
974-many generate code for any architecture (PWR/PWRX/PPC)\n\
975-mregnames Allow symbolic names for registers\n\
976-mno-regnames Do not allow symbolic names for registers\n"));
977#ifdef OBJ_ELF
bc805888 978 fprintf (stream, _("\
252b5132
RH		 979-mrelocatable support for GCC's -mrelocatble option\n\
980-mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
981-memb set PPC_EMB bit in ELF flags\n\
982-mlittle, -mlittle-endian\n\
983 generate code for a little endian machine\n\
984-mbig, -mbig-endian generate code for a big endian machine\n\
985-msolaris generate code for Solaris\n\
986-mno-solaris do not generate code for Solaris\n\
987-V print assembler version number\n\
988-Qy, -Qn ignored\n"));
989#endif
990}
991\f
992/* Set ppc_cpu if it is not already set. */
993
994static void
995ppc_set_cpu ()
996{
997 const char *default_os = TARGET_OS;
998 const char *default_cpu = TARGET_CPU;
999
1000 if (ppc_cpu == 0)
1001 {
1002 if (strncmp (default_os, "aix", 3) == 0
1003 && default_os[3] >= '4' && default_os[3] <= '9')
1004 ppc_cpu = PPC_OPCODE_COMMON;
1005 else if (strncmp (default_os, "aix3", 4) == 0)
1006 ppc_cpu = PPC_OPCODE_POWER;
1007 else if (strcmp (default_cpu, "rs6000") == 0)
1008 ppc_cpu = PPC_OPCODE_POWER;
1009 else if (strcmp (default_cpu, "powerpc") == 0
1010 || strcmp (default_cpu, "powerpcle") == 0)
1011 ppc_cpu = PPC_OPCODE_PPC;
1012 else
1013 as_fatal (_("Unknown default cpu = %s, os = %s"), default_cpu, default_os);
1014 }
1015}
1016
1017/* Figure out the BFD architecture to use. */
1018
1019enum bfd_architecture
1020ppc_arch ()
1021{
1022 const char *default_cpu = TARGET_CPU;
1023 ppc_set_cpu ();
1024
1025 if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
1026 return bfd_arch_powerpc;
1027 else if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
1028 return bfd_arch_rs6000;
1029 else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
1030 {
1031 if (strcmp (default_cpu, "rs6000") == 0)
1032 return bfd_arch_rs6000;
1033 else if (strcmp (default_cpu, "powerpc") == 0
1034 || strcmp (default_cpu, "powerpcle") == 0)
1035 return bfd_arch_powerpc;
1036 }
1037
1038 as_fatal (_("Neither Power nor PowerPC opcodes were selected."));
1039 return bfd_arch_unknown;
1040}
1041
7f6d05e8
CP		 1042unsigned long
1043ppc_mach ()
1044{
1045 return (ppc_size == PPC_OPCODE_64) ? 620 : 0;
1046}
1047
1048int
1049ppc_subseg_align()
1050{
1051 return (ppc_xcoff64) ? 3 : 2;
1052}
1053
81d4177b 1054extern char*
7f6d05e8
CP		 1055ppc_target_format()
1056{
1057#ifdef OBJ_COFF
1058#ifdef TE_PE
1059 return (target_big_endian ? "pe-powerpc" : "pe-powerpcle");
1060#elif TE_POWERMAC
1061#else
1062 return (ppc_xcoff64 ? "aixcoff64-rs6000" : "aixcoff-rs6000");
1063#endif
1064#ifdef TE_POWERMAC
1065 return "xcoff-powermac";
1066#endif
1067#endif
1068#ifdef OBJ_ELF
1069 return (target_big_endian ? "elf32-powerpc" : "elf32-powerpcle");
1070#endif
1071}
1072
252b5132
RH		 1073/* This function is called when the assembler starts up. It is called
1074 after the options have been parsed and the output file has been
1075 opened. */
1076
1077void
1078md_begin ()
1079{
1080 register const struct powerpc_opcode *op;
1081 const struct powerpc_opcode *op_end;
1082 const struct powerpc_macro *macro;
1083 const struct powerpc_macro *macro_end;
1084 boolean dup_insn = false;
1085
1086 ppc_set_cpu ();
1087
1088#ifdef OBJ_ELF
81d4177b 1089 /* Set the ELF flags if desired. */
252b5132
RH		 1090 if (ppc_flags && !msolaris)
1091 bfd_set_private_flags (stdoutput, ppc_flags);
1092#endif
1093
1094 /* Insert the opcodes into a hash table. */
1095 ppc_hash = hash_new ();
1096
1097 op_end = powerpc_opcodes + powerpc_num_opcodes;
1098 for (op = powerpc_opcodes; op < op_end; op++)
1099 {
1100 know ((op->opcode & op->mask) == op->opcode);
1101
1102 if ((op->flags & ppc_cpu) != 0
1103 && ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0
d0e9a01c
RH		 1104 || (op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == ppc_size
1105 || (ppc_cpu & PPC_OPCODE_64_BRIDGE) != 0))
252b5132
RH		 1106 {
1107 const char *retval;
1108
1109 retval = hash_insert (ppc_hash, op->name, (PTR) op);
1110 if (retval != (const char *) NULL)
1111 {
1112 /* Ignore Power duplicates for -m601 */
1113 if ((ppc_cpu & PPC_OPCODE_601) != 0
1114 && (op->flags & PPC_OPCODE_POWER) != 0)
1115 continue;
1116
1117 as_bad (_("Internal assembler error for instruction %s"), op->name);
1118 dup_insn = true;
1119 }
1120 }
1121 }
1122
1123 /* Insert the macros into a hash table. */
1124 ppc_macro_hash = hash_new ();
1125
1126 macro_end = powerpc_macros + powerpc_num_macros;
1127 for (macro = powerpc_macros; macro < macro_end; macro++)
1128 {
1129 if ((macro->flags & ppc_cpu) != 0)
1130 {
1131 const char *retval;
1132
1133 retval = hash_insert (ppc_macro_hash, macro->name, (PTR) macro);
1134 if (retval != (const char *) NULL)
1135 {
1136 as_bad (_("Internal assembler error for macro %s"), macro->name);
1137 dup_insn = true;
1138 }
1139 }
1140 }
1141
1142 if (dup_insn)
1143 abort ();
1144
1145 /* Tell the main code what the endianness is if it is not overidden by the user. */
1146 if (!set_target_endian)
1147 {
1148 set_target_endian = 1;
1149 target_big_endian = PPC_BIG_ENDIAN;
1150 }
1151
1152#ifdef OBJ_XCOFF
1153 ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
1154
1155 /* Create dummy symbols to serve as initial csects. This forces the
1156 text csects to precede the data csects. These symbols will not
1157 be output. */
1158 ppc_text_csects = symbol_make ("dummy\001");
809ffe0d 1159 symbol_get_tc (ppc_text_csects)->within = ppc_text_csects;
252b5132 1160 ppc_data_csects = symbol_make ("dummy\001");
809ffe0d 1161 symbol_get_tc (ppc_data_csects)->within = ppc_data_csects;
252b5132
RH		 1162#endif
1163
1164#ifdef TE_PE
1165
1166 ppc_current_section = text_section;
81d4177b 1167 ppc_previous_section = 0;
252b5132
RH		 1168
1169#endif
1170}
1171
1172/* Insert an operand value into an instruction. */
1173
1174static unsigned long
1175ppc_insert_operand (insn, operand, val, file, line)
1176 unsigned long insn;
1177 const struct powerpc_operand *operand;
1178 offsetT val;
1179 char *file;
1180 unsigned int line;
1181{
1182 if (operand->bits != 32)
1183 {
1184 long min, max;
1185 offsetT test;
1186
1187 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
1188 {
d0e9a01c 1189 if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0)
252b5132
RH		 1190 max = (1 << operand->bits) - 1;
1191 else
1192 max = (1 << (operand->bits - 1)) - 1;
1193 min = - (1 << (operand->bits - 1));
1194
1195 if (ppc_size == PPC_OPCODE_32)
1196 {
1197 /* Some people write 32 bit hex constants with the sign
1198 extension done by hand. This shouldn't really be
1199 valid, but, to permit this code to assemble on a 64
1200 bit host, we sign extend the 32 bit value. */
1201 if (val > 0
92161534
ILT		 1202 && (val & (offsetT) 0x80000000) != 0
1203 && (val & (offsetT) 0xffffffff) == val)
252b5132
RH		 1204 {
1205 val -= 0x80000000;
1206 val -= 0x80000000;
1207 }
1208 }
1209 }
1210 else
1211 {
1212 max = (1 << operand->bits) - 1;
1213 min = 0;
1214 }
1215
1216 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
1217 test = - val;
1218 else
1219 test = val;
1220
1221 if (test < (offsetT) min || test > (offsetT) max)
1222 {
1223 const char *err =
1224 _("operand out of range (%s not between %ld and %ld)");
1225 char buf[100];
1226
1227 sprint_value (buf, test);
1228 if (file == (char *) NULL)
1229 as_bad (err, buf, min, max);
1230 else
1231 as_bad_where (file, line, err, buf, min, max);
1232 }
1233 }
1234
1235 if (operand->insert)
1236 {
1237 const char *errmsg;
1238
1239 errmsg = NULL;
1240 insn = (*operand->insert) (insn, (long) val, &errmsg);
1241 if (errmsg != (const char *) NULL)
1242 as_bad (errmsg);
1243 }
1244 else
1245 insn |= (((long) val & ((1 << operand->bits) - 1))
1246 << operand->shift);
1247
1248 return insn;
1249}
1250
1251\f
1252#ifdef OBJ_ELF
1253/* Parse @got, etc. and return the desired relocation. */
1254static bfd_reloc_code_real_type
1255ppc_elf_suffix (str_p, exp_p)
1256 char **str_p;
1257 expressionS *exp_p;
1258{
1259 struct map_bfd {
1260 char *string;
1261 int length;
1262 bfd_reloc_code_real_type reloc;
1263 };
1264
1265 char ident[20];
1266 char *str = *str_p;
1267 char *str2;
1268 int ch;
1269 int len;
1270 struct map_bfd *ptr;
1271
bc805888 1272#define MAP(str,reloc) { str, sizeof (str)-1, reloc }
252b5132
RH		 1273
1274 static struct map_bfd mapping[] = {
1275 MAP ("l", BFD_RELOC_LO16),
1276 MAP ("h", BFD_RELOC_HI16),
1277 MAP ("ha", BFD_RELOC_HI16_S),
1278 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN),
1279 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN),
1280 MAP ("got", BFD_RELOC_16_GOTOFF),
1281 MAP ("got@l", BFD_RELOC_LO16_GOTOFF),
1282 MAP ("got@h", BFD_RELOC_HI16_GOTOFF),
1283 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF),
1284 MAP ("fixup", BFD_RELOC_CTOR), /* warnings with -mrelocatable */
1285 MAP ("plt", BFD_RELOC_24_PLT_PCREL),
1286 MAP ("pltrel24", BFD_RELOC_24_PLT_PCREL),
1287 MAP ("copy", BFD_RELOC_PPC_COPY),
1288 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT),
1289 MAP ("local24pc", BFD_RELOC_PPC_LOCAL24PC),
1290 MAP ("local", BFD_RELOC_PPC_LOCAL24PC),
1291 MAP ("pltrel", BFD_RELOC_32_PLT_PCREL),
1292 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF),
1293 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF),
1294 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF),
1295 MAP ("sdarel", BFD_RELOC_GPREL16),
1296 MAP ("sectoff", BFD_RELOC_32_BASEREL),
1297 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL),
1298 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL),
1299 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL),
1300 MAP ("naddr", BFD_RELOC_PPC_EMB_NADDR32),
1301 MAP ("naddr16", BFD_RELOC_PPC_EMB_NADDR16),
1302 MAP ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO),
1303 MAP ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI),
1304 MAP ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA),
1305 MAP ("sdai16", BFD_RELOC_PPC_EMB_SDAI16),
1306 MAP ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL),
1307 MAP ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16),
1308 MAP ("sda21", BFD_RELOC_PPC_EMB_SDA21),
1309 MAP ("mrkref", BFD_RELOC_PPC_EMB_MRKREF),
1310 MAP ("relsect", BFD_RELOC_PPC_EMB_RELSEC16),
1311 MAP ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO),
1312 MAP ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI),
1313 MAP ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA),
1314 MAP ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD),
1315 MAP ("relsda", BFD_RELOC_PPC_EMB_RELSDA),
1316 MAP ("xgot", BFD_RELOC_PPC_TOC16),
1317
1318 { (char *)0, 0, BFD_RELOC_UNUSED }
1319 };
1320
1321 if (*str++ != '@')
1322 return BFD_RELOC_UNUSED;
1323
1324 for (ch = *str, str2 = ident;
1325 (str2 < ident + sizeof (ident) - 1
1326 && (isalnum (ch) || ch == '@'));
1327 ch = *++str)
1328 {
1329 *str2++ = (islower (ch)) ? ch : tolower (ch);
1330 }
1331
1332 *str2 = '\0';
1333 len = str2 - ident;
1334
1335 ch = ident[0];
1336 for (ptr = &mapping[0]; ptr->length > 0; ptr++)
1337 if (ch == ptr->string[0]
1338 && len == ptr->length
1339 && memcmp (ident, ptr->string, ptr->length) == 0)
1340 {
1341 if (exp_p->X_add_number != 0
1342 && (ptr->reloc == BFD_RELOC_16_GOTOFF
1343 || ptr->reloc == BFD_RELOC_LO16_GOTOFF
1344 || ptr->reloc == BFD_RELOC_HI16_GOTOFF
1345 || ptr->reloc == BFD_RELOC_HI16_S_GOTOFF))
1346 as_warn (_("identifier+constant@got means identifier@got+constant"));
1347
1348 /* Now check for identifier@suffix+constant */
1349 if (*str == '-' || *str == '+')
1350 {
1351 char *orig_line = input_line_pointer;
1352 expressionS new_exp;
1353
1354 input_line_pointer = str;
1355 expression (&new_exp);
1356 if (new_exp.X_op == O_constant)
1357 {
1358 exp_p->X_add_number += new_exp.X_add_number;
1359 str = input_line_pointer;
1360 }
1361
1362 if (&input_line_pointer != str_p)
1363 input_line_pointer = orig_line;
1364 }
1365
1366 *str_p = str;
1367 return ptr->reloc;
1368 }
1369
1370 return BFD_RELOC_UNUSED;
1371}
1372
81d4177b 1373/* Like normal .long/.short/.word, except support @got, etc. */
252b5132 1374/* clobbers input_line_pointer, checks */
81d4177b 1375/* end-of-line. */
252b5132
RH		 1376static void
1377ppc_elf_cons (nbytes)
1378 register int nbytes; /* 1=.byte, 2=.word, 4=.long */
1379{
1380 expressionS exp;
1381 bfd_reloc_code_real_type reloc;
1382
1383 if (is_it_end_of_statement ())
1384 {
1385 demand_empty_rest_of_line ();
1386 return;
1387 }
1388
1389 do
1390 {
1391 expression (&exp);
1392 if (exp.X_op == O_symbol
1393 && *input_line_pointer == '@'
1394 && (reloc = ppc_elf_suffix (&input_line_pointer, &exp)) != BFD_RELOC_UNUSED)
1395 {
1396 reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
1397 int size = bfd_get_reloc_size (reloc_howto);
1398
1399 if (size > nbytes)
1400 as_bad (_("%s relocations do not fit in %d bytes\n"), reloc_howto->name, nbytes);
1401
1402 else
1403 {
1404 register char *p = frag_more ((int) nbytes);
1405 int offset = nbytes - size;
1406
1407 fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size, &exp, 0, reloc);
1408 }
1409 }
1410 else
1411 emit_expr (&exp, (unsigned int) nbytes);
1412 }
1413 while (*input_line_pointer++ == ',');
1414
81d4177b 1415 input_line_pointer--; /* Put terminator back into stream. */
252b5132
RH		 1416 demand_empty_rest_of_line ();
1417}
1418
1419/* Solaris pseduo op to change to the .rodata section. */
1420static void
1421ppc_elf_rdata (xxx)
1422 int xxx;
1423{
1424 char *save_line = input_line_pointer;
1425 static char section[] = ".rodata\n";
1426
1427 /* Just pretend this is .section .rodata */
1428 input_line_pointer = section;
1429 obj_elf_section (xxx);
1430
1431 input_line_pointer = save_line;
1432}
1433
1434/* Pseudo op to make file scope bss items */
1435static void
1436ppc_elf_lcomm(xxx)
92161534 1437 int xxx ATTRIBUTE_UNUSED;
252b5132
RH		 1438{
1439 register char *name;
1440 register char c;
1441 register char *p;
1442 offsetT size;
1443 register symbolS *symbolP;
1444 offsetT align;
1445 segT old_sec;
1446 int old_subsec;
1447 char *pfrag;
1448 int align2;
1449
1450 name = input_line_pointer;
1451 c = get_symbol_end ();
1452
1453 /* just after name is now '\0' */
1454 p = input_line_pointer;
1455 *p = c;
1456 SKIP_WHITESPACE ();
1457 if (*input_line_pointer != ',')
1458 {
1459 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
1460 ignore_rest_of_line ();
1461 return;
1462 }
1463
1464 input_line_pointer++; /* skip ',' */
1465 if ((size = get_absolute_expression ()) < 0)
1466 {
1467 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
1468 ignore_rest_of_line ();
1469 return;
1470 }
1471
1472 /* The third argument to .lcomm is the alignment. */
1473 if (*input_line_pointer != ',')
1474 align = 8;
1475 else
1476 {
1477 ++input_line_pointer;
1478 align = get_absolute_expression ();
1479 if (align <= 0)
1480 {
1481 as_warn (_("ignoring bad alignment"));
1482 align = 8;
1483 }
1484 }
1485
1486 *p = 0;
1487 symbolP = symbol_find_or_make (name);
1488 *p = c;
1489
1490 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
1491 {
1492 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
1493 S_GET_NAME (symbolP));
1494 ignore_rest_of_line ();
1495 return;
1496 }
1497
1498 if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
1499 {
1500 as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
1501 S_GET_NAME (symbolP),
1502 (long) S_GET_VALUE (symbolP),
1503 (long) size);
1504
1505 ignore_rest_of_line ();
1506 return;
1507 }
1508
1509 /* allocate_bss: */
1510 old_sec = now_seg;
1511 old_subsec = now_subseg;
1512 if (align)
1513 {
1514 /* convert to a power of 2 alignment */
1515 for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
1516 if (align != 1)
1517 {
1518 as_bad (_("Common alignment not a power of 2"));
1519 ignore_rest_of_line ();
1520 return;
1521 }
1522 }
1523 else
1524 align2 = 0;
1525
1526 record_alignment (bss_section, align2);
1527 subseg_set (bss_section, 0);
1528 if (align2)
1529 frag_align (align2, 0, 0);
1530 if (S_GET_SEGMENT (symbolP) == bss_section)
49309057
ILT		 1531 symbol_get_frag (symbolP)->fr_symbol = 0;
1532 symbol_set_frag (symbolP, frag_now);
252b5132
RH		 1533 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
1534 (char *) 0);
1535 *pfrag = 0;
1536 S_SET_SIZE (symbolP, size);
1537 S_SET_SEGMENT (symbolP, bss_section);
1538 subseg_set (old_sec, old_subsec);
1539 demand_empty_rest_of_line ();
1540}
1541
1542/* Validate any relocations emitted for -mrelocatable, possibly adding
1543 fixups for word relocations in writable segments, so we can adjust
1544 them at runtime. */
1545static void
1546ppc_elf_validate_fix (fixp, seg)
1547 fixS *fixp;
1548 segT seg;
1549{
1550 if (fixp->fx_done || fixp->fx_pcrel)
1551 return;
1552
1553 switch (shlib)
1554 {
1555 case SHLIB_NONE:
1556 case SHLIB_PIC:
1557 return;
1558
5d6f4f16 1559 case SHLIB_MRELOCATABLE:
252b5132
RH		 1560 if (fixp->fx_r_type <= BFD_RELOC_UNUSED
1561 && fixp->fx_r_type != BFD_RELOC_16_GOTOFF
1562 && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
1563 && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
1564 && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
1565 && fixp->fx_r_type != BFD_RELOC_32_BASEREL
1566 && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
1567 && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
1568 && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
1569 && strcmp (segment_name (seg), ".got2") != 0
1570 && strcmp (segment_name (seg), ".dtors") != 0
1571 && strcmp (segment_name (seg), ".ctors") != 0
1572 && strcmp (segment_name (seg), ".fixup") != 0
1573 && strcmp (segment_name (seg), ".stab") != 0
1574 && strcmp (segment_name (seg), ".gcc_except_table") != 0
1575 && strcmp (segment_name (seg), ".eh_frame") != 0
1576 && strcmp (segment_name (seg), ".ex_shared") != 0)
1577 {
1578 if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
1579 || fixp->fx_r_type != BFD_RELOC_CTOR)
1580 {
1581 as_bad_where (fixp->fx_file, fixp->fx_line,
1582 _("Relocation cannot be done when using -mrelocatable"));
1583 }
1584 }
1585 return;
1586 }
1587}
1588#endif /* OBJ_ELF */
1589\f
1590#ifdef TE_PE
1591
1592/*
1593 * Summary of parse_toc_entry().
1594 *
1595 * in: Input_line_pointer points to the '[' in one of:
1596 *
1597 * [toc] [tocv] [toc32] [toc64]
1598 *
1599 * Anything else is an error of one kind or another.
1600 *
81d4177b 1601 * out:
252b5132
RH		 1602 * return value: success or failure
1603 * toc_kind: kind of toc reference
1604 * input_line_pointer:
1605 * success: first char after the ']'
1606 * failure: unchanged
1607 *
1608 * settings:
1609 *
1610 * [toc] - rv == success, toc_kind = default_toc
1611 * [tocv] - rv == success, toc_kind = data_in_toc
1612 * [toc32] - rv == success, toc_kind = must_be_32
1613 * [toc64] - rv == success, toc_kind = must_be_64
1614 *
1615 */
1616
81d4177b
KH		 1617enum toc_size_qualifier
1618{
252b5132
RH		 1619 default_toc, /* The toc cell constructed should be the system default size */
1620 data_in_toc, /* This is a direct reference to a toc cell */
1621 must_be_32, /* The toc cell constructed must be 32 bits wide */
1622 must_be_64 /* The toc cell constructed must be 64 bits wide */
1623};
1624
1625static int
1626parse_toc_entry(toc_kind)
1627 enum toc_size_qualifier *toc_kind;
1628{
1629 char *start;
1630 char *toc_spec;
1631 char c;
1632 enum toc_size_qualifier t;
1633
1634 /* save the input_line_pointer */
1635 start = input_line_pointer;
1636
1637 /* skip over the '[' , and whitespace */
1638 ++input_line_pointer;
1639 SKIP_WHITESPACE ();
81d4177b 1640
252b5132
RH		 1641 /* find the spelling of the operand */
1642 toc_spec = input_line_pointer;
1643 c = get_symbol_end ();
1644
81d4177b 1645 if (strcmp(toc_spec, "toc") == 0)
252b5132
RH		 1646 {
1647 t = default_toc;
1648 }
81d4177b 1649 else if (strcmp(toc_spec, "tocv") == 0)
252b5132
RH		 1650 {
1651 t = data_in_toc;
1652 }
81d4177b 1653 else if (strcmp(toc_spec, "toc32") == 0)
252b5132
RH		 1654 {
1655 t = must_be_32;
1656 }
81d4177b 1657 else if (strcmp(toc_spec, "toc64") == 0)
252b5132
RH		 1658 {
1659 t = must_be_64;
1660 }
1661 else
1662 {
1663 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec);
1664 *input_line_pointer = c; /* put back the delimiting char */
1665 input_line_pointer = start; /* reset input_line pointer */
1666 return 0;
1667 }
1668
1669 /* now find the ']' */
1670 *input_line_pointer = c; /* put back the delimiting char */
1671
81d4177b
KH		 1672 SKIP_WHITESPACE (); /* leading whitespace could be there. */
1673 c = *input_line_pointer++; /* input_line_pointer->past char in c. */
252b5132
RH		 1674
1675 if (c != ']')
1676 {
1677 as_bad (_("syntax error: expected `]', found `%c'"), c);
1678 input_line_pointer = start; /* reset input_line pointer */
1679 return 0;
1680 }
1681
1682 *toc_kind = t; /* set return value */
1683 return 1;
1684}
1685#endif
1686\f
1687
1688/* We need to keep a list of fixups. We can't simply generate them as
1689 we go, because that would require us to first create the frag, and
1690 that would screw up references to ``.''. */
1691
1692struct ppc_fixup
1693{
1694 expressionS exp;
1695 int opindex;
1696 bfd_reloc_code_real_type reloc;
1697};
1698
1699#define MAX_INSN_FIXUPS (5)
1700
1701/* This routine is called for each instruction to be assembled. */
1702
1703void
1704md_assemble (str)
1705 char *str;
1706{
1707 char *s;
1708 const struct powerpc_opcode *opcode;
1709 unsigned long insn;
1710 const unsigned char *opindex_ptr;
1711 int skip_optional;
1712 int need_paren;
1713 int next_opindex;
1714 struct ppc_fixup fixups[MAX_INSN_FIXUPS];
1715 int fc;
1716 char *f;
1717 int i;
1718#ifdef OBJ_ELF
1719 bfd_reloc_code_real_type reloc;
1720#endif
1721
1722 /* Get the opcode. */
1723 for (s = str; *s != '\0' && ! isspace (*s); s++)
1724 ;
1725 if (*s != '\0')
1726 *s++ = '\0';
1727
1728 /* Look up the opcode in the hash table. */
1729 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str);
1730 if (opcode == (const struct powerpc_opcode *) NULL)
1731 {
1732 const struct powerpc_macro *macro;
1733
1734 macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str);
1735 if (macro == (const struct powerpc_macro *) NULL)
1736 as_bad (_("Unrecognized opcode: `%s'"), str);
1737 else
1738 ppc_macro (s, macro);
1739
1740 return;
1741 }
1742
1743 insn = opcode->opcode;
1744
1745 str = s;
1746 while (isspace (*str))
1747 ++str;
1748
1749 /* PowerPC operands are just expressions. The only real issue is
1750 that a few operand types are optional. All cases which might use
1751 an optional operand separate the operands only with commas (in
1752 some cases parentheses are used, as in ``lwz 1,0(1)'' but such
1753 cases never have optional operands). There is never more than
1754 one optional operand for an instruction. So, before we start
1755 seriously parsing the operands, we check to see if we have an
1756 optional operand, and, if we do, we count the number of commas to
1757 see whether the operand should be omitted. */
1758 skip_optional = 0;
1759 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
1760 {
1761 const struct powerpc_operand *operand;
1762
1763 operand = &powerpc_operands[*opindex_ptr];
1764 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
1765 {
1766 unsigned int opcount;
1767
1768 /* There is an optional operand. Count the number of
1769 commas in the input line. */
1770 if (*str == '\0')
1771 opcount = 0;
1772 else
1773 {
1774 opcount = 1;
1775 s = str;
1776 while ((s = strchr (s, ',')) != (char *) NULL)
1777 {
1778 ++opcount;
1779 ++s;
1780 }
1781 }
1782
1783 /* If there are fewer operands in the line then are called
1784 for by the instruction, we want to skip the optional
1785 operand. */
1786 if (opcount < strlen (opcode->operands))
1787 skip_optional = 1;
1788
1789 break;
1790 }
1791 }
1792
1793 /* Gather the operands. */
1794 need_paren = 0;
1795 next_opindex = 0;
1796 fc = 0;
1797 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
1798 {
1799 const struct powerpc_operand *operand;
1800 const char *errmsg;
1801 char *hold;
1802 expressionS ex;
1803 char endc;
1804
1805 if (next_opindex == 0)
1806 operand = &powerpc_operands[*opindex_ptr];
1807 else
1808 {
1809 operand = &powerpc_operands[next_opindex];
1810 next_opindex = 0;
1811 }
1812
1813 errmsg = NULL;
1814
1815 /* If this is a fake operand, then we do not expect anything
1816 from the input. */
1817 if ((operand->flags & PPC_OPERAND_FAKE) != 0)
1818 {
1819 insn = (*operand->insert) (insn, 0L, &errmsg);
1820 if (errmsg != (const char *) NULL)
1821 as_bad (errmsg);
1822 continue;
1823 }
1824
1825 /* If this is an optional operand, and we are skipping it, just
1826 insert a zero. */
1827 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
1828 && skip_optional)
1829 {
1830 if (operand->insert)
1831 {
1832 insn = (*operand->insert) (insn, 0L, &errmsg);
1833 if (errmsg != (const char *) NULL)
1834 as_bad (errmsg);
1835 }
1836 if ((operand->flags & PPC_OPERAND_NEXT) != 0)
1837 next_opindex = *opindex_ptr + 1;
1838 continue;
1839 }
1840
1841 /* Gather the operand. */
1842 hold = input_line_pointer;
1843 input_line_pointer = str;
1844
1845#ifdef TE_PE
81d4177b 1846 if (*input_line_pointer == '[')
252b5132
RH		 1847 {
1848 /* We are expecting something like the second argument here:
1849
1850 lwz r4,[toc].GS.0.static_int(rtoc)
1851 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
81d4177b 1852 The argument following the `]' must be a symbol name, and the
252b5132
RH		 1853 register must be the toc register: 'rtoc' or '2'
1854
1855 The effect is to 0 as the displacement field
1856 in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
1857 the appropriate variation) reloc against it based on the symbol.
1858 The linker will build the toc, and insert the resolved toc offset.
1859
1860 Note:
1861 o The size of the toc entry is currently assumed to be
1862 32 bits. This should not be assumed to be a hard coded
1863 number.
1864 o In an effort to cope with a change from 32 to 64 bits,
1865 there are also toc entries that are specified to be
1866 either 32 or 64 bits:
1867 lwz r4,[toc32].GS.0.static_int(rtoc)
1868 lwz r4,[toc64].GS.0.static_int(rtoc)
1869 These demand toc entries of the specified size, and the
1870 instruction probably requires it.
1871 */
1872
1873 int valid_toc;
1874 enum toc_size_qualifier toc_kind;
1875 bfd_reloc_code_real_type toc_reloc;
1876
1877 /* go parse off the [tocXX] part */
1878 valid_toc = parse_toc_entry(&toc_kind);
1879
81d4177b 1880 if (!valid_toc)
252b5132
RH		 1881 {
1882 /* Note: message has already been issued. */
1883 /* FIXME: what sort of recovery should we do? */
1884 /* demand_rest_of_line(); return; ? */
1885 }
1886
1887 /* Now get the symbol following the ']' */
1888 expression(&ex);
1889
1890 switch (toc_kind)
1891 {
1892 case default_toc:
1893 /* In this case, we may not have seen the symbol yet, since */
1894 /* it is allowed to appear on a .extern or .globl or just be */
1895 /* a label in the .data section. */
1896 toc_reloc = BFD_RELOC_PPC_TOC16;
1897 break;
1898 case data_in_toc:
1899 /* 1. The symbol must be defined and either in the toc */
1900 /* section, or a global. */
1901 /* 2. The reloc generated must have the TOCDEFN flag set in */
1902 /* upper bit mess of the reloc type. */
1903 /* FIXME: It's a little confusing what the tocv qualifier can */
1904 /* be used for. At the very least, I've seen three */
1905 /* uses, only one of which I'm sure I can explain. */
81d4177b
KH		 1906 if (ex.X_op == O_symbol)
1907 {
252b5132 1908 assert (ex.X_add_symbol != NULL);
fed9b18a
ILT		 1909 if (symbol_get_bfdsym (ex.X_add_symbol)->section
1910 != tocdata_section)
252b5132
RH		 1911 {
1912 as_bad(_("[tocv] symbol is not a toc symbol"));
1913 }
1914 }
1915
1916 toc_reloc = BFD_RELOC_PPC_TOC16;
1917 break;
1918 case must_be_32:
1919 /* FIXME: these next two specifically specify 32/64 bit toc */
1920 /* entries. We don't support them today. Is this the */
1921 /* right way to say that? */
1922 toc_reloc = BFD_RELOC_UNUSED;
1923 as_bad (_("Unimplemented toc32 expression modifier"));
1924 break;
1925 case must_be_64:
1926 /* FIXME: see above */
1927 toc_reloc = BFD_RELOC_UNUSED;
1928 as_bad (_("Unimplemented toc64 expression modifier"));
1929 break;
1930 default:
bc805888 1931 fprintf (stderr,
252b5132
RH		 1932 _("Unexpected return value [%d] from parse_toc_entry!\n"),
1933 toc_kind);
bc805888 1934 abort ();
252b5132
RH		 1935 break;
1936 }
1937
1938 /* We need to generate a fixup for this expression. */
1939 if (fc >= MAX_INSN_FIXUPS)
1940 as_fatal (_("too many fixups"));
1941
1942 fixups[fc].reloc = toc_reloc;
1943 fixups[fc].exp = ex;
1944 fixups[fc].opindex = *opindex_ptr;
1945 ++fc;
1946
1947 /* Ok. We've set up the fixup for the instruction. Now make it
1948 look like the constant 0 was found here */
1949 ex.X_unsigned = 1;
1950 ex.X_op = O_constant;
1951 ex.X_add_number = 0;
1952 ex.X_add_symbol = NULL;
1953 ex.X_op_symbol = NULL;
1954 }
1955
1956 else
1957#endif /* TE_PE */
1958 {
1959 if (! register_name (&ex))
1960 {
1961 if ((operand->flags & PPC_OPERAND_CR) != 0)
1962 cr_operand = true;
1963 expression (&ex);
1964 cr_operand = false;
1965 }
1966 }
1967
1968 str = input_line_pointer;
1969 input_line_pointer = hold;
1970
1971 if (ex.X_op == O_illegal)
1972 as_bad (_("illegal operand"));
1973 else if (ex.X_op == O_absent)
1974 as_bad (_("missing operand"));
1975 else if (ex.X_op == O_register)
1976 {
1977 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
1978 (char *) NULL, 0);
1979 }
1980 else if (ex.X_op == O_constant)
1981 {
1982#ifdef OBJ_ELF
81d4177b 1983 /* Allow @HA, @L, @H on constants. */
252b5132
RH		 1984 char *orig_str = str;
1985
1986 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
1987 switch (reloc)
1988 {
1989 default:
1990 str = orig_str;
1991 break;
1992
1993 case BFD_RELOC_LO16:
1994 /* X_unsigned is the default, so if the user has done
1995 something which cleared it, we always produce a
1996 signed value. */
1997 if (ex.X_unsigned
1998 && (operand->flags & PPC_OPERAND_SIGNED) == 0)
1999 ex.X_add_number &= 0xffff;
2000 else
2001 ex.X_add_number = (((ex.X_add_number & 0xffff)
2002 ^ 0x8000)
2003 - 0x8000);
2004 break;
2005
2006 case BFD_RELOC_HI16:
2007 ex.X_add_number = (ex.X_add_number >> 16) & 0xffff;
2008 break;
2009
2010 case BFD_RELOC_HI16_S:
f589a541
ILT		 2011 ex.X_add_number = ((((ex.X_add_number >> 16) & 0xffff)
2012 + ((ex.X_add_number >> 15) & 1))
2013 & 0xffff);
252b5132
RH		 2014 break;
2015 }
2016#endif
2017 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2018 (char *) NULL, 0);
2019 }
2020#ifdef OBJ_ELF
2021 else if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2022 {
2023 /* For the absoulte forms of branchs, convert the PC relative form back into
2024 the absolute. */
2025 if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
2026 {
2027 switch (reloc)
2028 {
2029 case BFD_RELOC_PPC_B26:
2030 reloc = BFD_RELOC_PPC_BA26;
2031 break;
2032 case BFD_RELOC_PPC_B16:
2033 reloc = BFD_RELOC_PPC_BA16;
2034 break;
2035 case BFD_RELOC_PPC_B16_BRTAKEN:
2036 reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
2037 break;
2038 case BFD_RELOC_PPC_B16_BRNTAKEN:
2039 reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
2040 break;
2041 default:
2042 break;
2043 }
2044 }
2045
2046 /* We need to generate a fixup for this expression. */
2047 if (fc >= MAX_INSN_FIXUPS)
2048 as_fatal (_("too many fixups"));
2049 fixups[fc].exp = ex;
2050 fixups[fc].opindex = 0;
2051 fixups[fc].reloc = reloc;
2052 ++fc;
2053 }
2054#endif /* OBJ_ELF */
2055
2056 else
2057 {
2058 /* We need to generate a fixup for this expression. */
2059 if (fc >= MAX_INSN_FIXUPS)
2060 as_fatal (_("too many fixups"));
2061 fixups[fc].exp = ex;
2062 fixups[fc].opindex = *opindex_ptr;
2063 fixups[fc].reloc = BFD_RELOC_UNUSED;
2064 ++fc;
2065 }
2066
2067 if (need_paren)
2068 {
2069 endc = ')';
2070 need_paren = 0;
2071 }
2072 else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
2073 {
2074 endc = '(';
2075 need_paren = 1;
2076 }
2077 else
2078 endc = ',';
2079
2080 /* The call to expression should have advanced str past any
2081 whitespace. */
2082 if (*str != endc
2083 && (endc != ',' || *str != '\0'))
2084 {
2085 as_bad (_("syntax error; found `%c' but expected `%c'"), *str, endc);
2086 break;
2087 }
2088
2089 if (*str != '\0')
2090 ++str;
2091 }
2092
2093 while (isspace (*str))
2094 ++str;
2095
2096 if (*str != '\0')
2097 as_bad (_("junk at end of line: `%s'"), str);
2098
2099 /* Write out the instruction. */
2100 f = frag_more (4);
2101 md_number_to_chars (f, insn, 4);
2102
5d6f4f16
GK		 2103#ifdef OBJ_ELF
2104 dwarf2_emit_insn (4);
2105#endif
2106
252b5132
RH		 2107 /* Create any fixups. At this point we do not use a
2108 bfd_reloc_code_real_type, but instead just use the
2109 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2110 handle fixups for any operand type, although that is admittedly
2111 not a very exciting feature. We pick a BFD reloc type in
2112 md_apply_fix. */
2113 for (i = 0; i < fc; i++)
2114 {
2115 const struct powerpc_operand *operand;
2116
2117 operand = &powerpc_operands[fixups[i].opindex];
2118 if (fixups[i].reloc != BFD_RELOC_UNUSED)
2119 {
2120 reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
2121 int size;
2122 int offset;
2123 fixS *fixP;
2124
2125 if (!reloc_howto)
2126 abort ();
2127
2128 size = bfd_get_reloc_size (reloc_howto);
2129 offset = target_big_endian ? (4 - size) : 0;
2130
2131 if (size < 1 || size > 4)
bc805888 2132 abort ();
252b5132
RH		 2133
2134 fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, size,
2135 &fixups[i].exp, reloc_howto->pc_relative,
2136 fixups[i].reloc);
2137
2138 /* Turn off complaints that the addend is too large for things like
2139 foo+100000@ha. */
2140 switch (fixups[i].reloc)
2141 {
2142 case BFD_RELOC_16_GOTOFF:
2143 case BFD_RELOC_PPC_TOC16:
2144 case BFD_RELOC_LO16:
2145 case BFD_RELOC_HI16:
2146 case BFD_RELOC_HI16_S:
2147 fixP->fx_no_overflow = 1;
2148 break;
2149 default:
2150 break;
2151 }
2152 }
2153 else
2154 fix_new_exp (frag_now, f - frag_now->fr_literal, 4,
2155 &fixups[i].exp,
2156 (operand->flags & PPC_OPERAND_RELATIVE) != 0,
2157 ((bfd_reloc_code_real_type)
2158 (fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
2159 }
2160}
2161
2162/* Handle a macro. Gather all the operands, transform them as
2163 described by the macro, and call md_assemble recursively. All the
2164 operands are separated by commas; we don't accept parentheses
2165 around operands here. */
2166
2167static void
2168ppc_macro (str, macro)
2169 char *str;
2170 const struct powerpc_macro *macro;
2171{
2172 char *operands[10];
2173 unsigned int count;
2174 char *s;
2175 unsigned int len;
2176 const char *format;
2177 int arg;
2178 char *send;
2179 char *complete;
2180
2181 /* Gather the users operands into the operands array. */
2182 count = 0;
2183 s = str;
2184 while (1)
2185 {
2186 if (count >= sizeof operands / sizeof operands[0])
2187 break;
2188 operands[count++] = s;
2189 s = strchr (s, ',');
2190 if (s == (char *) NULL)
2191 break;
2192 *s++ = '\0';
81d4177b 2193 }
252b5132
RH		 2194
2195 if (count != macro->operands)
2196 {
2197 as_bad (_("wrong number of operands"));
2198 return;
2199 }
2200
2201 /* Work out how large the string must be (the size is unbounded
2202 because it includes user input). */
2203 len = 0;
2204 format = macro->format;
2205 while (*format != '\0')
2206 {
2207 if (*format != '%')
2208 {
2209 ++len;
2210 ++format;
2211 }
2212 else
2213 {
2214 arg = strtol (format + 1, &send, 10);
2215 know (send != format && arg >= 0 && arg < count);
2216 len += strlen (operands[arg]);
2217 format = send;
2218 }
2219 }
2220
2221 /* Put the string together. */
2222 complete = s = (char *) alloca (len + 1);
2223 format = macro->format;
2224 while (*format != '\0')
2225 {
2226 if (*format != '%')
2227 *s++ = *format++;
2228 else
2229 {
2230 arg = strtol (format + 1, &send, 10);
2231 strcpy (s, operands[arg]);
2232 s += strlen (s);
2233 format = send;
2234 }
2235 }
2236 *s = '\0';
2237
2238 /* Assemble the constructed instruction. */
2239 md_assemble (complete);
81d4177b 2240}
252b5132
RH		 2241\f
2242#ifdef OBJ_ELF
2243/* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED */
2244
2245int
2246ppc_section_letter (letter, ptr_msg)
2247 int letter;
2248 char **ptr_msg;
2249{
2250 if (letter == 'e')
2251 return SHF_EXCLUDE;
2252
2253 *ptr_msg = _("Bad .section directive: want a,w,x,e in string");
2254 return 0;
2255}
2256
2257int
9de8d8f1
RH		 2258ppc_section_word (str, len)
2259 char *str;
2260 size_t len;
252b5132 2261{
9de8d8f1
RH		 2262 if (len == 7 && strncmp (str, "exclude", 7) == 0)
2263 return SHF_EXCLUDE;
252b5132 2264
9de8d8f1 2265 return -1;
252b5132
RH		 2266}
2267
2268int
9de8d8f1
RH		 2269ppc_section_type (str, len)
2270 char *str;
2271 size_t len;
252b5132 2272{
9de8d8f1
RH		 2273 if (len == 7 && strncmp (str, "ordered", 7) == 0)
2274 return SHT_ORDERED;
252b5132 2275
9de8d8f1 2276 return -1;
252b5132
RH		 2277}
2278
2279int
2280ppc_section_flags (flags, attr, type)
2281 int flags;
2282 int attr;
2283 int type;
2284{
2285 if (type == SHT_ORDERED)
2286 flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
2287
2288 if (attr & SHF_EXCLUDE)
2289 flags |= SEC_EXCLUDE;
2290
2291 return flags;
2292}
2293#endif /* OBJ_ELF */
2294
2295\f
2296/* Pseudo-op handling. */
2297
2298/* The .byte pseudo-op. This is similar to the normal .byte
2299 pseudo-op, but it can also take a single ASCII string. */
2300
2301static void
2302ppc_byte (ignore)
92161534 2303 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 2304{
2305 if (*input_line_pointer != '\"')
2306 {
2307 cons (1);
2308 return;
2309 }
2310
2311 /* Gather characters. A real double quote is doubled. Unusual
2312 characters are not permitted. */
2313 ++input_line_pointer;
2314 while (1)
2315 {
2316 char c;
2317
2318 c = *input_line_pointer++;
2319
2320 if (c == '\"')
2321 {
2322 if (*input_line_pointer != '\"')
2323 break;
2324 ++input_line_pointer;
2325 }
2326
2327 FRAG_APPEND_1_CHAR (c);
2328 }
2329
2330 demand_empty_rest_of_line ();
2331}
2332\f
2333#ifdef OBJ_XCOFF
2334
2335/* XCOFF specific pseudo-op handling. */
2336
2337/* This is set if we are creating a .stabx symbol, since we don't want
2338 to handle symbol suffixes for such symbols. */
2339static boolean ppc_stab_symbol;
2340
2341/* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
2342 symbols in the .bss segment as though they were local common
2343 symbols, and uses a different smclas. */
2344
2345static void
2346ppc_comm (lcomm)
2347 int lcomm;
2348{
2349 asection *current_seg = now_seg;
2350 subsegT current_subseg = now_subseg;
2351 char *name;
2352 char endc;
2353 char *end_name;
2354 offsetT size;
2355 offsetT align;
2356 symbolS *lcomm_sym = NULL;
2357 symbolS *sym;
2358 char *pfrag;
2359
2360 name = input_line_pointer;
2361 endc = get_symbol_end ();
2362 end_name = input_line_pointer;
2363 *end_name = endc;
2364
2365 if (*input_line_pointer != ',')
2366 {
2367 as_bad (_("missing size"));
2368 ignore_rest_of_line ();
2369 return;
2370 }
2371 ++input_line_pointer;
2372
2373 size = get_absolute_expression ();
2374 if (size < 0)
2375 {
2376 as_bad (_("negative size"));
2377 ignore_rest_of_line ();
2378 return;
2379 }
2380
2381 if (! lcomm)
2382 {
2383 /* The third argument to .comm is the alignment. */
2384 if (*input_line_pointer != ',')
2385 align = 3;
2386 else
2387 {
2388 ++input_line_pointer;
2389 align = get_absolute_expression ();
2390 if (align <= 0)
2391 {
2392 as_warn (_("ignoring bad alignment"));
2393 align = 3;
2394 }
2395 }
2396 }
2397 else
2398 {
2399 char *lcomm_name;
2400 char lcomm_endc;
2401
2402 if (size <= 1)
2403 align = 0;
2404 else if (size <= 2)
2405 align = 1;
2406 else if (size <= 4)
2407 align = 2;
2408 else
2409 align = 3;
2410
2411 /* The third argument to .lcomm appears to be the real local
2412 common symbol to create. References to the symbol named in
2413 the first argument are turned into references to the third
2414 argument. */
2415 if (*input_line_pointer != ',')
2416 {
2417 as_bad (_("missing real symbol name"));
2418 ignore_rest_of_line ();
2419 return;
2420 }
2421 ++input_line_pointer;
2422
2423 lcomm_name = input_line_pointer;
2424 lcomm_endc = get_symbol_end ();
81d4177b 2425
252b5132
RH		 2426 lcomm_sym = symbol_find_or_make (lcomm_name);
2427
2428 *input_line_pointer = lcomm_endc;
2429 }
2430
2431 *end_name = '\0';
2432 sym = symbol_find_or_make (name);
2433 *end_name = endc;
2434
2435 if (S_IS_DEFINED (sym)
2436 || S_GET_VALUE (sym) != 0)
2437 {
2438 as_bad (_("attempt to redefine symbol"));
2439 ignore_rest_of_line ();
2440 return;
2441 }
81d4177b 2442
252b5132 2443 record_alignment (bss_section, align);
81d4177b 2444
252b5132
RH		 2445 if (! lcomm
2446 || ! S_IS_DEFINED (lcomm_sym))
2447 {
2448 symbolS *def_sym;
2449 offsetT def_size;
2450
2451 if (! lcomm)
2452 {
2453 def_sym = sym;
2454 def_size = size;
2455 S_SET_EXTERNAL (sym);
2456 }
2457 else
2458 {
809ffe0d 2459 symbol_get_tc (lcomm_sym)->output = 1;
252b5132
RH		 2460 def_sym = lcomm_sym;
2461 def_size = 0;
2462 }
2463
2464 subseg_set (bss_section, 1);
2465 frag_align (align, 0, 0);
81d4177b 2466
809ffe0d 2467 symbol_set_frag (def_sym, frag_now);
252b5132
RH		 2468 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
2469 def_size, (char *) NULL);
2470 *pfrag = 0;
2471 S_SET_SEGMENT (def_sym, bss_section);
809ffe0d 2472 symbol_get_tc (def_sym)->align = align;
252b5132
RH		 2473 }
2474 else if (lcomm)
2475 {
2476 /* Align the size of lcomm_sym. */
809ffe0d
ILT		 2477 symbol_get_frag (lcomm_sym)->fr_offset =
2478 ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
252b5132 2479 &~ ((1 << align) - 1));
809ffe0d
ILT		 2480 if (align > symbol_get_tc (lcomm_sym)->align)
2481 symbol_get_tc (lcomm_sym)->align = align;
252b5132
RH		 2482 }
2483
2484 if (lcomm)
2485 {
2486 /* Make sym an offset from lcomm_sym. */
2487 S_SET_SEGMENT (sym, bss_section);
809ffe0d
ILT		 2488 symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
2489 S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
2490 symbol_get_frag (lcomm_sym)->fr_offset += size;
252b5132
RH		 2491 }
2492
2493 subseg_set (current_seg, current_subseg);
2494
2495 demand_empty_rest_of_line ();
2496}
2497
2498/* The .csect pseudo-op. This switches us into a different
2499 subsegment. The first argument is a symbol whose value is the
2500 start of the .csect. In COFF, csect symbols get special aux
2501 entries defined by the x_csect field of union internal_auxent. The
2502 optional second argument is the alignment (the default is 2). */
2503
2504static void
2505ppc_csect (ignore)
5480ccf3 2506 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 2507{
2508 char *name;
2509 char endc;
2510 symbolS *sym;
2511
2512 name = input_line_pointer;
2513 endc = get_symbol_end ();
81d4177b 2514
252b5132
RH		 2515 sym = symbol_find_or_make (name);
2516
2517 *input_line_pointer = endc;
2518
2519 if (S_GET_NAME (sym)[0] == '\0')
2520 {
2521 /* An unnamed csect is assumed to be [PR]. */
809ffe0d 2522 symbol_get_tc (sym)->class = XMC_PR;
252b5132
RH		 2523 }
2524
2525 ppc_change_csect (sym);
2526
2527 if (*input_line_pointer == ',')
2528 {
2529 ++input_line_pointer;
809ffe0d 2530 symbol_get_tc (sym)->align = get_absolute_expression ();
252b5132
RH		 2531 }
2532
2533 demand_empty_rest_of_line ();
2534}
2535
2536/* Change to a different csect. */
2537
2538static void
2539ppc_change_csect (sym)
2540 symbolS *sym;
2541{
2542 if (S_IS_DEFINED (sym))
809ffe0d 2543 subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
252b5132
RH		 2544 else
2545 {
2546 symbolS **list_ptr;
2547 int after_toc;
2548 int hold_chunksize;
2549 symbolS *list;
2550
2551 /* This is a new csect. We need to look at the symbol class to
2552 figure out whether it should go in the text section or the
2553 data section. */
2554 after_toc = 0;
809ffe0d 2555 switch (symbol_get_tc (sym)->class)
252b5132
RH		 2556 {
2557 case XMC_PR:
2558 case XMC_RO:
2559 case XMC_DB:
2560 case XMC_GL:
2561 case XMC_XO:
2562 case XMC_SV:
2563 case XMC_TI:
2564 case XMC_TB:
2565 S_SET_SEGMENT (sym, text_section);
809ffe0d 2566 symbol_get_tc (sym)->subseg = ppc_text_subsegment;
252b5132
RH		 2567 ++ppc_text_subsegment;
2568 list_ptr = &ppc_text_csects;
2569 break;
2570 case XMC_RW:
2571 case XMC_TC0:
2572 case XMC_TC:
2573 case XMC_DS:
2574 case XMC_UA:
2575 case XMC_BS:
2576 case XMC_UC:
2577 if (ppc_toc_csect != NULL
809ffe0d
ILT		 2578 && (symbol_get_tc (ppc_toc_csect)->subseg + 1
2579 == ppc_data_subsegment))
252b5132
RH		 2580 after_toc = 1;
2581 S_SET_SEGMENT (sym, data_section);
809ffe0d 2582 symbol_get_tc (sym)->subseg = ppc_data_subsegment;
252b5132
RH		 2583 ++ppc_data_subsegment;
2584 list_ptr = &ppc_data_csects;
2585 break;
2586 default:
2587 abort ();
2588 }
2589
2590 /* We set the obstack chunk size to a small value before
2591 changing subsegments, so that we don't use a lot of memory
2592 space for what may be a small section. */
2593 hold_chunksize = chunksize;
2594 chunksize = 64;
2595
809ffe0d
ILT		 2596 subseg_new (segment_name (S_GET_SEGMENT (sym)),
2597 symbol_get_tc (sym)->subseg);
252b5132
RH		 2598
2599 chunksize = hold_chunksize;
2600
2601 if (after_toc)
2602 ppc_after_toc_frag = frag_now;
2603
809ffe0d 2604 symbol_set_frag (sym, frag_now);
252b5132
RH		 2605 S_SET_VALUE (sym, (valueT) frag_now_fix ());
2606
7f6d05e8 2607 symbol_get_tc (sym)->align = (ppc_xcoff64) ? 3 : 2;
809ffe0d
ILT		 2608 symbol_get_tc (sym)->output = 1;
2609 symbol_get_tc (sym)->within = sym;
81d4177b 2610
252b5132 2611 for (list = *list_ptr;
809ffe0d
ILT		 2612 symbol_get_tc (list)->next != (symbolS *) NULL;
2613 list = symbol_get_tc (list)->next)
252b5132 2614 ;
809ffe0d 2615 symbol_get_tc (list)->next = sym;
81d4177b 2616
252b5132 2617 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
809ffe0d
ILT		 2618 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
2619 &symbol_lastP);
252b5132
RH		 2620 }
2621
2622 ppc_current_csect = sym;
2623}
2624
2625/* This function handles the .text and .data pseudo-ops. These
2626 pseudo-ops aren't really used by XCOFF; we implement them for the
2627 convenience of people who aren't used to XCOFF. */
2628
2629static void
2630ppc_section (type)
2631 int type;
2632{
2633 const char *name;
2634 symbolS *sym;
2635
2636 if (type == 't')
2637 name = ".text[PR]";
2638 else if (type == 'd')
2639 name = ".data[RW]";
2640 else
2641 abort ();
2642
2643 sym = symbol_find_or_make (name);
2644
2645 ppc_change_csect (sym);
2646
2647 demand_empty_rest_of_line ();
2648}
2649
2650/* This function handles the .section pseudo-op. This is mostly to
2651 give an error, since XCOFF only supports .text, .data and .bss, but
2652 we do permit the user to name the text or data section. */
2653
2654static void
2655ppc_named_section (ignore)
5480ccf3 2656 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 2657{
2658 char *user_name;
2659 const char *real_name;
2660 char c;
2661 symbolS *sym;
2662
2663 user_name = input_line_pointer;
2664 c = get_symbol_end ();
2665
2666 if (strcmp (user_name, ".text") == 0)
2667 real_name = ".text[PR]";
2668 else if (strcmp (user_name, ".data") == 0)
2669 real_name = ".data[RW]";
2670 else
2671 {
2672 as_bad (_("The XCOFF file format does not support arbitrary sections"));
2673 *input_line_pointer = c;
2674 ignore_rest_of_line ();
2675 return;
2676 }
2677
2678 *input_line_pointer = c;
2679
2680 sym = symbol_find_or_make (real_name);
2681
2682 ppc_change_csect (sym);
2683
2684 demand_empty_rest_of_line ();
2685}
2686
2687/* The .extern pseudo-op. We create an undefined symbol. */
2688
2689static void
2690ppc_extern (ignore)
5480ccf3 2691 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 2692{
2693 char *name;
2694 char endc;
2695
2696 name = input_line_pointer;
2697 endc = get_symbol_end ();
2698
2699 (void) symbol_find_or_make (name);
2700
2701 *input_line_pointer = endc;
2702
2703 demand_empty_rest_of_line ();
2704}
2705
2706/* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
2707
2708static void
2709ppc_lglobl (ignore)
5480ccf3 2710 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 2711{
2712 char *name;
2713 char endc;
2714 symbolS *sym;
2715
2716 name = input_line_pointer;
2717 endc = get_symbol_end ();
2718
2719 sym = symbol_find_or_make (name);
2720
2721 *input_line_pointer = endc;
2722
809ffe0d 2723 symbol_get_tc (sym)->output = 1;
252b5132
RH		 2724
2725 demand_empty_rest_of_line ();
2726}
2727
2728/* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
2729 although I don't know why it bothers. */
2730
2731static void
2732ppc_rename (ignore)
5480ccf3 2733 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 2734{
2735 char *name;
2736 char endc;
2737 symbolS *sym;
2738 int len;
2739
2740 name = input_line_pointer;
2741 endc = get_symbol_end ();
2742
2743 sym = symbol_find_or_make (name);
2744
2745 *input_line_pointer = endc;
2746
2747 if (*input_line_pointer != ',')
2748 {
2749 as_bad (_("missing rename string"));
2750 ignore_rest_of_line ();
2751 return;
2752 }
2753 ++input_line_pointer;
2754
809ffe0d 2755 symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
252b5132
RH		 2756
2757 demand_empty_rest_of_line ();
2758}
2759
2760/* The .stabx pseudo-op. This is similar to a normal .stabs
2761 pseudo-op, but slightly different. A sample is
2762 .stabx "main:F-1",.main,142,0
2763 The first argument is the symbol name to create. The second is the
2764 value, and the third is the storage class. The fourth seems to be
2765 always zero, and I am assuming it is the type. */
2766
2767static void
2768ppc_stabx (ignore)
5480ccf3 2769 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 2770{
2771 char *name;
2772 int len;
2773 symbolS *sym;
2774 expressionS exp;
2775
2776 name = demand_copy_C_string (&len);
2777
2778 if (*input_line_pointer != ',')
2779 {
2780 as_bad (_("missing value"));
2781 return;
2782 }
2783 ++input_line_pointer;
2784
2785 ppc_stab_symbol = true;
2786 sym = symbol_make (name);
2787 ppc_stab_symbol = false;
2788
809ffe0d 2789 symbol_get_tc (sym)->real_name = name;
252b5132
RH		 2790
2791 (void) expression (&exp);
2792
2793 switch (exp.X_op)
2794 {
2795 case O_illegal:
2796 case O_absent:
2797 case O_big:
2798 as_bad (_("illegal .stabx expression; zero assumed"));
2799 exp.X_add_number = 0;
2800 /* Fall through. */
2801 case O_constant:
2802 S_SET_VALUE (sym, (valueT) exp.X_add_number);
809ffe0d 2803 symbol_set_frag (sym, &zero_address_frag);
252b5132
RH		 2804 break;
2805
2806 case O_symbol:
2807 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
809ffe0d 2808 symbol_set_value_expression (sym, &exp);
252b5132
RH		 2809 else
2810 {
2811 S_SET_VALUE (sym,
2812 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
809ffe0d 2813 symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
252b5132
RH		 2814 }
2815 break;
2816
2817 default:
2818 /* The value is some complex expression. This will probably
2819 fail at some later point, but this is probably the right
2820 thing to do here. */
809ffe0d 2821 symbol_set_value_expression (sym, &exp);
252b5132
RH		 2822 break;
2823 }
2824
2825 S_SET_SEGMENT (sym, ppc_coff_debug_section);
809ffe0d 2826 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
252b5132
RH		 2827
2828 if (*input_line_pointer != ',')
2829 {
2830 as_bad (_("missing class"));
2831 return;
2832 }
2833 ++input_line_pointer;
2834
2835 S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
2836
2837 if (*input_line_pointer != ',')
2838 {
2839 as_bad (_("missing type"));
2840 return;
2841 }
2842 ++input_line_pointer;
2843
2844 S_SET_DATA_TYPE (sym, get_absolute_expression ());
2845
809ffe0d 2846 symbol_get_tc (sym)->output = 1;
252b5132 2847
6877bb43
TR		 2848 if (S_GET_STORAGE_CLASS (sym) == C_STSYM) {
2849
809ffe0d 2850 symbol_get_tc (sym)->within = ppc_current_block;
252b5132 2851
41ea10b1 2852 /* In this case :
6877bb43 2853
41ea10b1
TR		 2854 .bs name
2855 .stabx "z",arrays_,133,0
2856 .es
2857
2858 .comm arrays_,13768,3
2859
2860 resolve_symbol_value will copy the exp's "within" into sym's when the
2861 offset is 0. Since this seems to be corner case problem,
2862 only do the correction for storage class C_STSYM. A better solution
2863 would be to have the tc field updated in ppc_symbol_new_hook. */
2864
2865 if (exp.X_op == O_symbol)
2866 {
2867 symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block;
2868 }
6877bb43
TR		 2869 }
2870
252b5132
RH		 2871 if (exp.X_op != O_symbol
2872 || ! S_IS_EXTERNAL (exp.X_add_symbol)
2873 || S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
2874 ppc_frob_label (sym);
2875 else
2876 {
2877 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
2878 symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
809ffe0d
ILT		 2879 if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
2880 symbol_get_tc (ppc_current_csect)->within = sym;
252b5132
RH		 2881 }
2882
2883 demand_empty_rest_of_line ();
2884}
2885
2886/* The .function pseudo-op. This takes several arguments. The first
2887 argument seems to be the external name of the symbol. The second
2888 argment seems to be the label for the start of the function. gcc
2889 uses the same name for both. I have no idea what the third and
2890 fourth arguments are meant to be. The optional fifth argument is
2891 an expression for the size of the function. In COFF this symbol
2892 gets an aux entry like that used for a csect. */
2893
2894static void
2895ppc_function (ignore)
5480ccf3 2896 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 2897{
2898 char *name;
2899 char endc;
2900 char *s;
2901 symbolS *ext_sym;
2902 symbolS *lab_sym;
2903
2904 name = input_line_pointer;
2905 endc = get_symbol_end ();
2906
2907 /* Ignore any [PR] suffix. */
2908 name = ppc_canonicalize_symbol_name (name);
2909 s = strchr (name, '[');
2910 if (s != (char *) NULL
2911 && strcmp (s + 1, "PR]") == 0)
2912 *s = '\0';
2913
2914 ext_sym = symbol_find_or_make (name);
2915
2916 *input_line_pointer = endc;
2917
2918 if (*input_line_pointer != ',')
2919 {
2920 as_bad (_("missing symbol name"));
2921 ignore_rest_of_line ();
2922 return;
2923 }
2924 ++input_line_pointer;
2925
2926 name = input_line_pointer;
2927 endc = get_symbol_end ();
2928
2929 lab_sym = symbol_find_or_make (name);
2930
2931 *input_line_pointer = endc;
2932
2933 if (ext_sym != lab_sym)
2934 {
809ffe0d
ILT		 2935 expressionS exp;
2936
2937 exp.X_op = O_symbol;
2938 exp.X_add_symbol = lab_sym;
2939 exp.X_op_symbol = NULL;
2940 exp.X_add_number = 0;
2941 exp.X_unsigned = 0;
2942 symbol_set_value_expression (ext_sym, &exp);
252b5132
RH		 2943 }
2944
809ffe0d
ILT		 2945 if (symbol_get_tc (ext_sym)->class == -1)
2946 symbol_get_tc (ext_sym)->class = XMC_PR;
2947 symbol_get_tc (ext_sym)->output = 1;
252b5132
RH		 2948
2949 if (*input_line_pointer == ',')
2950 {
2951 expressionS ignore;
2952
2953 /* Ignore the third argument. */
2954 ++input_line_pointer;
2955 expression (&ignore);
2956 if (*input_line_pointer == ',')
2957 {
2958 /* Ignore the fourth argument. */
2959 ++input_line_pointer;
2960 expression (&ignore);
2961 if (*input_line_pointer == ',')
2962 {
2963 /* The fifth argument is the function size. */
2964 ++input_line_pointer;
809ffe0d
ILT		 2965 symbol_get_tc (ext_sym)->size = symbol_new ("L0\001",
2966 absolute_section,
2967 (valueT) 0,
2968 &zero_address_frag);
2969 pseudo_set (symbol_get_tc (ext_sym)->size);
252b5132
RH		 2970 }
2971 }
2972 }
2973
2974 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
2975 SF_SET_FUNCTION (ext_sym);
2976 SF_SET_PROCESS (ext_sym);
2977 coff_add_linesym (ext_sym);
2978
2979 demand_empty_rest_of_line ();
2980}
2981
2982/* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
2983 ".bf". */
2984
2985static void
2986ppc_bf (ignore)
5480ccf3 2987 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 2988{
2989 symbolS *sym;
2990
2991 sym = symbol_make (".bf");
2992 S_SET_SEGMENT (sym, text_section);
809ffe0d 2993 symbol_set_frag (sym, frag_now);
252b5132
RH		 2994 S_SET_VALUE (sym, frag_now_fix ());
2995 S_SET_STORAGE_CLASS (sym, C_FCN);
2996
2997 coff_line_base = get_absolute_expression ();
2998
2999 S_SET_NUMBER_AUXILIARY (sym, 1);
3000 SA_SET_SYM_LNNO (sym, coff_line_base);
3001
809ffe0d 3002 symbol_get_tc (sym)->output = 1;
252b5132
RH		 3003
3004 ppc_frob_label (sym);
3005
3006 demand_empty_rest_of_line ();
3007}
3008
3009/* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
3010 ".ef", except that the line number is absolute, not relative to the
3011 most recent ".bf" symbol. */
3012
3013static void
3014ppc_ef (ignore)
5480ccf3 3015 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3016{
3017 symbolS *sym;
3018
3019 sym = symbol_make (".ef");
3020 S_SET_SEGMENT (sym, text_section);
809ffe0d 3021 symbol_set_frag (sym, frag_now);
252b5132
RH		 3022 S_SET_VALUE (sym, frag_now_fix ());
3023 S_SET_STORAGE_CLASS (sym, C_FCN);
3024 S_SET_NUMBER_AUXILIARY (sym, 1);
3025 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
809ffe0d 3026 symbol_get_tc (sym)->output = 1;
252b5132
RH		 3027
3028 ppc_frob_label (sym);
3029
3030 demand_empty_rest_of_line ();
3031}
3032
3033/* The .bi and .ei pseudo-ops. These take a string argument and
3034 generates a C_BINCL or C_EINCL symbol, which goes at the start of
3035 the symbol list. */
3036
3037static void
3038ppc_biei (ei)
3039 int ei;
3040{
3041 static symbolS *last_biei;
3042
3043 char *name;
3044 int len;
3045 symbolS *sym;
3046 symbolS *look;
3047
3048 name = demand_copy_C_string (&len);
3049
3050 /* The value of these symbols is actually file offset. Here we set
3051 the value to the index into the line number entries. In
3052 ppc_frob_symbols we set the fix_line field, which will cause BFD
3053 to do the right thing. */
3054
3055 sym = symbol_make (name);
3056 /* obj-coff.c currently only handles line numbers correctly in the
3057 .text section. */
3058 S_SET_SEGMENT (sym, text_section);
3059 S_SET_VALUE (sym, coff_n_line_nos);
809ffe0d 3060 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
252b5132
RH		 3061
3062 S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
809ffe0d 3063 symbol_get_tc (sym)->output = 1;
81d4177b 3064
252b5132
RH		 3065 for (look = last_biei ? last_biei : symbol_rootP;
3066 (look != (symbolS *) NULL
3067 && (S_GET_STORAGE_CLASS (look) == C_FILE
3068 || S_GET_STORAGE_CLASS (look) == C_BINCL
3069 || S_GET_STORAGE_CLASS (look) == C_EINCL));
3070 look = symbol_next (look))
3071 ;
3072 if (look != (symbolS *) NULL)
3073 {
3074 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3075 symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
3076 last_biei = sym;
3077 }
3078
3079 demand_empty_rest_of_line ();
3080}
3081
3082/* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
3083 There is one argument, which is a csect symbol. The value of the
3084 .bs symbol is the index of this csect symbol. */
3085
3086static void
3087ppc_bs (ignore)
5480ccf3 3088 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3089{
3090 char *name;
3091 char endc;
3092 symbolS *csect;
3093 symbolS *sym;
3094
3095 if (ppc_current_block != NULL)
3096 as_bad (_("nested .bs blocks"));
3097
3098 name = input_line_pointer;
3099 endc = get_symbol_end ();
3100
3101 csect = symbol_find_or_make (name);
3102
3103 *input_line_pointer = endc;
3104
3105 sym = symbol_make (".bs");
3106 S_SET_SEGMENT (sym, now_seg);
3107 S_SET_STORAGE_CLASS (sym, C_BSTAT);
809ffe0d
ILT		 3108 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3109 symbol_get_tc (sym)->output = 1;
252b5132 3110
809ffe0d 3111 symbol_get_tc (sym)->within = csect;
252b5132
RH		 3112
3113 ppc_frob_label (sym);
3114
3115 ppc_current_block = sym;
3116
3117 demand_empty_rest_of_line ();
3118}
3119
3120/* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
3121
3122static void
3123ppc_es (ignore)
5480ccf3 3124 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3125{
3126 symbolS *sym;
3127
3128 if (ppc_current_block == NULL)
3129 as_bad (_(".es without preceding .bs"));
3130
3131 sym = symbol_make (".es");
3132 S_SET_SEGMENT (sym, now_seg);
3133 S_SET_STORAGE_CLASS (sym, C_ESTAT);
809ffe0d
ILT		 3134 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3135 symbol_get_tc (sym)->output = 1;
252b5132
RH		 3136
3137 ppc_frob_label (sym);
3138
3139 ppc_current_block = NULL;
3140
3141 demand_empty_rest_of_line ();
3142}
3143
3144/* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
3145 line number. */
3146
3147static void
3148ppc_bb (ignore)
5480ccf3 3149 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3150{
3151 symbolS *sym;
3152
3153 sym = symbol_make (".bb");
3154 S_SET_SEGMENT (sym, text_section);
809ffe0d 3155 symbol_set_frag (sym, frag_now);
252b5132
RH		 3156 S_SET_VALUE (sym, frag_now_fix ());
3157 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3158
3159 S_SET_NUMBER_AUXILIARY (sym, 1);
3160 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3161
809ffe0d 3162 symbol_get_tc (sym)->output = 1;
252b5132
RH		 3163
3164 SF_SET_PROCESS (sym);
3165
3166 ppc_frob_label (sym);
3167
3168 demand_empty_rest_of_line ();
3169}
3170
3171/* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
3172 line number. */
3173
3174static void
3175ppc_eb (ignore)
5480ccf3 3176 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3177{
3178 symbolS *sym;
3179
3180 sym = symbol_make (".eb");
3181 S_SET_SEGMENT (sym, text_section);
809ffe0d 3182 symbol_set_frag (sym, frag_now);
252b5132
RH		 3183 S_SET_VALUE (sym, frag_now_fix ());
3184 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3185 S_SET_NUMBER_AUXILIARY (sym, 1);
3186 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
809ffe0d 3187 symbol_get_tc (sym)->output = 1;
252b5132
RH		 3188
3189 SF_SET_PROCESS (sym);
3190
3191 ppc_frob_label (sym);
3192
3193 demand_empty_rest_of_line ();
3194}
3195
3196/* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
3197 specified name. */
3198
3199static void
3200ppc_bc (ignore)
5480ccf3 3201 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3202{
3203 char *name;
3204 int len;
3205 symbolS *sym;
3206
3207 name = demand_copy_C_string (&len);
3208 sym = symbol_make (name);
3209 S_SET_SEGMENT (sym, ppc_coff_debug_section);
809ffe0d 3210 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
252b5132
RH		 3211 S_SET_STORAGE_CLASS (sym, C_BCOMM);
3212 S_SET_VALUE (sym, 0);
809ffe0d 3213 symbol_get_tc (sym)->output = 1;
252b5132
RH		 3214
3215 ppc_frob_label (sym);
3216
3217 demand_empty_rest_of_line ();
3218}
3219
3220/* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
3221
3222static void
3223ppc_ec (ignore)
5480ccf3 3224 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3225{
3226 symbolS *sym;
3227
3228 sym = symbol_make (".ec");
3229 S_SET_SEGMENT (sym, ppc_coff_debug_section);
809ffe0d 3230 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
252b5132
RH		 3231 S_SET_STORAGE_CLASS (sym, C_ECOMM);
3232 S_SET_VALUE (sym, 0);
809ffe0d 3233 symbol_get_tc (sym)->output = 1;
252b5132
RH		 3234
3235 ppc_frob_label (sym);
3236
3237 demand_empty_rest_of_line ();
3238}
3239
3240/* The .toc pseudo-op. Switch to the .toc subsegment. */
3241
3242static void
3243ppc_toc (ignore)
5480ccf3 3244 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3245{
3246 if (ppc_toc_csect != (symbolS *) NULL)
809ffe0d 3247 subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
252b5132
RH		 3248 else
3249 {
3250 subsegT subseg;
3251 symbolS *sym;
3252 symbolS *list;
81d4177b 3253
252b5132
RH		 3254 subseg = ppc_data_subsegment;
3255 ++ppc_data_subsegment;
3256
3257 subseg_new (segment_name (data_section), subseg);
3258 ppc_toc_frag = frag_now;
3259
3260 sym = symbol_find_or_make ("TOC[TC0]");
809ffe0d 3261 symbol_set_frag (sym, frag_now);
252b5132
RH		 3262 S_SET_SEGMENT (sym, data_section);
3263 S_SET_VALUE (sym, (valueT) frag_now_fix ());
809ffe0d
ILT		 3264 symbol_get_tc (sym)->subseg = subseg;
3265 symbol_get_tc (sym)->output = 1;
3266 symbol_get_tc (sym)->within = sym;
252b5132
RH		 3267
3268 ppc_toc_csect = sym;
81d4177b 3269
252b5132 3270 for (list = ppc_data_csects;
809ffe0d
ILT		 3271 symbol_get_tc (list)->next != (symbolS *) NULL;
3272 list = symbol_get_tc (list)->next)
252b5132 3273 ;
809ffe0d 3274 symbol_get_tc (list)->next = sym;
252b5132
RH		 3275
3276 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
809ffe0d
ILT		 3277 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3278 &symbol_lastP);
252b5132
RH		 3279 }
3280
3281 ppc_current_csect = ppc_toc_csect;
3282
3283 demand_empty_rest_of_line ();
3284}
3285
3286/* The AIX assembler automatically aligns the operands of a .long or
3287 .short pseudo-op, and we want to be compatible. */
3288
3289static void
3290ppc_xcoff_cons (log_size)
3291 int log_size;
3292{
3293 frag_align (log_size, 0, 0);
3294 record_alignment (now_seg, log_size);
3295 cons (1 << log_size);
3296}
3297
7f6d05e8 3298static void
81d4177b 3299ppc_machine(dummy)
5480ccf3 3300 int dummy ATTRIBUTE_UNUSED;
7f6d05e8
CP		 3301{
3302 discard_rest_of_line();
3303 /* What does aix use this for? */
3304}
3305
252b5132
RH		 3306static void
3307ppc_vbyte (dummy)
5480ccf3 3308 int dummy ATTRIBUTE_UNUSED;
252b5132
RH		 3309{
3310 expressionS exp;
3311 int byte_count;
3312
3313 (void) expression (&exp);
3314
3315 if (exp.X_op != O_constant)
3316 {
3317 as_bad (_("non-constant byte count"));
3318 return;
3319 }
3320
3321 byte_count = exp.X_add_number;
3322
3323 if (*input_line_pointer != ',')
3324 {
3325 as_bad (_("missing value"));
3326 return;
3327 }
3328
3329 ++input_line_pointer;
3330 cons (byte_count);
3331}
3332
3333#endif /* OBJ_XCOFF */
3334\f
3335/* The .tc pseudo-op. This is used when generating either XCOFF or
3336 ELF. This takes two or more arguments.
3337
3338 When generating XCOFF output, the first argument is the name to
3339 give to this location in the toc; this will be a symbol with class
3340 TC. The rest of the arguments are 4 byte values to actually put at
3341 this location in the TOC; often there is just one more argument, a
3342 relocateable symbol reference.
3343
3344 When not generating XCOFF output, the arguments are the same, but
3345 the first argument is simply ignored. */
3346
3347static void
3348ppc_tc (ignore)
92161534 3349 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3350{
3351#ifdef OBJ_XCOFF
3352
3353 /* Define the TOC symbol name. */
3354 {
3355 char *name;
3356 char endc;
3357 symbolS *sym;
3358
3359 if (ppc_toc_csect == (symbolS *) NULL
3360 || ppc_toc_csect != ppc_current_csect)
3361 {
3362 as_bad (_(".tc not in .toc section"));
3363 ignore_rest_of_line ();
3364 return;
3365 }
3366
3367 name = input_line_pointer;
3368 endc = get_symbol_end ();
3369
3370 sym = symbol_find_or_make (name);
3371
3372 *input_line_pointer = endc;
3373
3374 if (S_IS_DEFINED (sym))
3375 {
3376 symbolS *label;
3377
809ffe0d
ILT		 3378 label = symbol_get_tc (ppc_current_csect)->within;
3379 if (symbol_get_tc (label)->class != XMC_TC0)
252b5132
RH		 3380 {
3381 as_bad (_(".tc with no label"));
3382 ignore_rest_of_line ();
3383 return;
3384 }
3385
3386 S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
809ffe0d 3387 symbol_set_frag (label, symbol_get_frag (sym));
252b5132
RH		 3388 S_SET_VALUE (label, S_GET_VALUE (sym));
3389
3390 while (! is_end_of_line[(unsigned char) *input_line_pointer])
3391 ++input_line_pointer;
3392
3393 return;
3394 }
3395
3396 S_SET_SEGMENT (sym, now_seg);
809ffe0d 3397 symbol_set_frag (sym, frag_now);
252b5132 3398 S_SET_VALUE (sym, (valueT) frag_now_fix ());
809ffe0d
ILT		 3399 symbol_get_tc (sym)->class = XMC_TC;
3400 symbol_get_tc (sym)->output = 1;
252b5132
RH		 3401
3402 ppc_frob_label (sym);
3403 }
3404
3405#else /* ! defined (OBJ_XCOFF) */
3406
3407 /* Skip the TOC symbol name. */
3408 while (is_part_of_name (*input_line_pointer)
3409 || *input_line_pointer == '['
3410 || *input_line_pointer == ']'
3411 || *input_line_pointer == '{'
3412 || *input_line_pointer == '}')
3413 ++input_line_pointer;
3414
3415 /* Align to a four byte boundary. */
3416 frag_align (2, 0, 0);
3417 record_alignment (now_seg, 2);
3418
3419#endif /* ! defined (OBJ_XCOFF) */
3420
3421 if (*input_line_pointer != ',')
3422 demand_empty_rest_of_line ();
3423 else
3424 {
3425 ++input_line_pointer;
7f6d05e8 3426 cons ((ppc_size == PPC_OPCODE_64) ? 8 : 4);
252b5132
RH		 3427 }
3428}
3429\f
3430#ifdef TE_PE
3431
3432/* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format */
3433
3434/* Set the current section. */
3435static void
3436ppc_set_current_section (new)
3437 segT new;
3438{
3439 ppc_previous_section = ppc_current_section;
3440 ppc_current_section = new;
3441}
3442
3443/* pseudo-op: .previous
3444 behaviour: toggles the current section with the previous section.
3445 errors: None
3446 warnings: "No previous section"
3447*/
3448static void
3449ppc_previous(ignore)
5480ccf3 3450 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3451{
3452 symbolS *tmp;
3453
81d4177b 3454 if (ppc_previous_section == NULL)
252b5132
RH		 3455 {
3456 as_warn(_("No previous section to return to. Directive ignored."));
3457 return;
3458 }
3459
3460 subseg_set(ppc_previous_section, 0);
3461
3462 ppc_set_current_section(ppc_previous_section);
3463}
3464
3465/* pseudo-op: .pdata
3466 behaviour: predefined read only data section
3467 double word aligned
3468 errors: None
3469 warnings: None
3470 initial: .section .pdata "adr3"
3471 a - don't know -- maybe a misprint
3472 d - initialized data
3473 r - readable
3474 3 - double word aligned (that would be 4 byte boundary)
3475
3476 commentary:
3477 Tag index tables (also known as the function table) for exception
3478 handling, debugging, etc.
3479
3480*/
3481static void
3482ppc_pdata(ignore)
5480ccf3 3483 int ignore ATTRIBUTE_UNUSED;
252b5132 3484{
81d4177b 3485 if (pdata_section == 0)
252b5132
RH		 3486 {
3487 pdata_section = subseg_new (".pdata", 0);
81d4177b 3488
252b5132
RH		 3489 bfd_set_section_flags (stdoutput, pdata_section,
3490 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3491 | SEC_READONLY | SEC_DATA ));
81d4177b 3492
252b5132
RH		 3493 bfd_set_section_alignment (stdoutput, pdata_section, 2);
3494 }
3495 else
3496 {
3497 pdata_section = subseg_new(".pdata", 0);
3498 }
3499 ppc_set_current_section(pdata_section);
3500}
3501
3502/* pseudo-op: .ydata
3503 behaviour: predefined read only data section
3504 double word aligned
3505 errors: None
3506 warnings: None
3507 initial: .section .ydata "drw3"
3508 a - don't know -- maybe a misprint
3509 d - initialized data
3510 r - readable
3511 3 - double word aligned (that would be 4 byte boundary)
3512 commentary:
3513 Tag tables (also known as the scope table) for exception handling,
3514 debugging, etc.
3515*/
3516static void
3517ppc_ydata(ignore)
5480ccf3 3518 int ignore ATTRIBUTE_UNUSED;
252b5132 3519{
81d4177b 3520 if (ydata_section == 0)
252b5132
RH		 3521 {
3522 ydata_section = subseg_new (".ydata", 0);
3523 bfd_set_section_flags (stdoutput, ydata_section,
3524 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3525 | SEC_READONLY | SEC_DATA ));
3526
3527 bfd_set_section_alignment (stdoutput, ydata_section, 3);
3528 }
3529 else
3530 {
3531 ydata_section = subseg_new (".ydata", 0);
3532 }
3533 ppc_set_current_section(ydata_section);
3534}
3535
3536/* pseudo-op: .reldata
3537 behaviour: predefined read write data section
3538 double word aligned (4-byte)
3539 FIXME: relocation is applied to it
3540 FIXME: what's the difference between this and .data?
3541 errors: None
3542 warnings: None
3543 initial: .section .reldata "drw3"
3544 d - initialized data
3545 r - readable
3546 w - writeable
3547 3 - double word aligned (that would be 8 byte boundary)
3548
3549 commentary:
3550 Like .data, but intended to hold data subject to relocation, such as
3551 function descriptors, etc.
3552*/
3553static void
3554ppc_reldata(ignore)
5480ccf3 3555 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3556{
3557 if (reldata_section == 0)
3558 {
3559 reldata_section = subseg_new (".reldata", 0);
3560
3561 bfd_set_section_flags (stdoutput, reldata_section,
81d4177b 3562 ( SEC_ALLOC | SEC_LOAD | SEC_RELOC
252b5132
RH		 3563 | SEC_DATA ));
3564
3565 bfd_set_section_alignment (stdoutput, reldata_section, 2);
3566 }
3567 else
3568 {
3569 reldata_section = subseg_new (".reldata", 0);
3570 }
3571 ppc_set_current_section(reldata_section);
3572}
3573
3574/* pseudo-op: .rdata
3575 behaviour: predefined read only data section
3576 double word aligned
3577 errors: None
3578 warnings: None
3579 initial: .section .rdata "dr3"
3580 d - initialized data
3581 r - readable
3582 3 - double word aligned (that would be 4 byte boundary)
3583*/
3584static void
3585ppc_rdata(ignore)
5480ccf3 3586 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3587{
3588 if (rdata_section == 0)
3589 {
3590 rdata_section = subseg_new (".rdata", 0);
3591 bfd_set_section_flags (stdoutput, rdata_section,
3592 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3593 | SEC_READONLY | SEC_DATA ));
3594
3595 bfd_set_section_alignment (stdoutput, rdata_section, 2);
3596 }
3597 else
3598 {
3599 rdata_section = subseg_new (".rdata", 0);
3600 }
3601 ppc_set_current_section(rdata_section);
3602}
3603
3604/* pseudo-op: .ualong
81d4177b 3605 behaviour: much like .int, with the exception that no alignment is
252b5132
RH		 3606 performed.
3607 FIXME: test the alignment statement
3608 errors: None
3609 warnings: None
3610*/
3611static void
3612ppc_ualong(ignore)
5480ccf3 3613 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3614{
3615 /* try for long */
3616 cons ( 4 );
3617}
3618
3619/* pseudo-op: .znop <symbol name>
3620 behaviour: Issue a nop instruction
3621 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
3622 the supplied symbol name.
3623 errors: None
3624 warnings: Missing symbol name
3625*/
3626static void
3627ppc_znop(ignore)
5480ccf3 3628 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3629{
3630 unsigned long insn;
3631 const struct powerpc_opcode *opcode;
3632 expressionS ex;
3633 char *f;
3634
3635 symbolS *sym;
3636
3637 /* Strip out the symbol name */
3638 char *symbol_name;
3639 char c;
3640 char *name;
3641 unsigned int exp;
3642 flagword flags;
3643 asection *sec;
3644
3645 symbol_name = input_line_pointer;
3646 c = get_symbol_end ();
3647
3648 name = xmalloc (input_line_pointer - symbol_name + 1);
3649 strcpy (name, symbol_name);
3650
3651 sym = symbol_find_or_make (name);
3652
3653 *input_line_pointer = c;
3654
3655 SKIP_WHITESPACE ();
3656
3657 /* Look up the opcode in the hash table. */
3658 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop");
3659
3660 /* stick in the nop */
3661 insn = opcode->opcode;
3662
3663 /* Write out the instruction. */
3664 f = frag_more (4);
3665 md_number_to_chars (f, insn, 4);
3666 fix_new (frag_now,
3667 f - frag_now->fr_literal,
3668 4,
3669 sym,
3670 0,
3671 0,
3672 BFD_RELOC_16_GOT_PCREL);
3673
3674}
3675
81d4177b
KH		 3676/* pseudo-op:
3677 behaviour:
3678 errors:
3679 warnings:
252b5132
RH		 3680*/
3681static void
3682ppc_pe_comm(lcomm)
3683 int lcomm;
3684{
3685 register char *name;
3686 register char c;
3687 register char *p;
3688 offsetT temp;
3689 register symbolS *symbolP;
3690 offsetT align;
3691
3692 name = input_line_pointer;
3693 c = get_symbol_end ();
3694
3695 /* just after name is now '\0' */
3696 p = input_line_pointer;
3697 *p = c;
3698 SKIP_WHITESPACE ();
3699 if (*input_line_pointer != ',')
3700 {
3701 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
3702 ignore_rest_of_line ();
3703 return;
3704 }
3705
3706 input_line_pointer++; /* skip ',' */
3707 if ((temp = get_absolute_expression ()) < 0)
3708 {
3709 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
3710 ignore_rest_of_line ();
3711 return;
3712 }
3713
3714 if (! lcomm)
3715 {
3716 /* The third argument to .comm is the alignment. */
3717 if (*input_line_pointer != ',')
3718 align = 3;
3719 else
3720 {
3721 ++input_line_pointer;
3722 align = get_absolute_expression ();
3723 if (align <= 0)
3724 {
3725 as_warn (_("ignoring bad alignment"));
3726 align = 3;
3727 }
3728 }
3729 }
3730
3731 *p = 0;
3732 symbolP = symbol_find_or_make (name);
3733
3734 *p = c;
3735 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
3736 {
3737 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
3738 S_GET_NAME (symbolP));
3739 ignore_rest_of_line ();
3740 return;
3741 }
3742
3743 if (S_GET_VALUE (symbolP))
3744 {
3745 if (S_GET_VALUE (symbolP) != (valueT) temp)
3746 as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
3747 S_GET_NAME (symbolP),
3748 (long) S_GET_VALUE (symbolP),
3749 (long) temp);
3750 }
3751 else
3752 {
3753 S_SET_VALUE (symbolP, (valueT) temp);
3754 S_SET_EXTERNAL (symbolP);
3755 }
3756
3757 demand_empty_rest_of_line ();
3758}
3759
3760/*
3761 * implement the .section pseudo op:
3762 * .section name {, "flags"}
3763 * ^ ^
3764 * | +--- optional flags: 'b' for bss
3765 * | 'i' for info
3766 * +-- section name 'l' for lib
3767 * 'n' for noload
3768 * 'o' for over
3769 * 'w' for data
3770 * 'd' (apparently m88k for data)
3771 * 'x' for text
3772 * But if the argument is not a quoted string, treat it as a
3773 * subsegment number.
3774 *
3775 * FIXME: this is a copy of the section processing from obj-coff.c, with
3776 * additions/changes for the moto-pas assembler support. There are three
3777 * categories:
3778 *
81d4177b 3779 * FIXME: I just noticed this. This doesn't work at all really. It it
252b5132
RH		 3780 * setting bits that bfd probably neither understands or uses. The
3781 * correct approach (?) will have to incorporate extra fields attached
3782 * to the section to hold the system specific stuff. (krk)
3783 *
3784 * Section Contents:
3785 * 'a' - unknown - referred to in documentation, but no definition supplied
3786 * 'c' - section has code
3787 * 'd' - section has initialized data
3788 * 'u' - section has uninitialized data
3789 * 'i' - section contains directives (info)
3790 * 'n' - section can be discarded
3791 * 'R' - remove section at link time
3792 *
3793 * Section Protection:
3794 * 'r' - section is readable
3795 * 'w' - section is writeable
3796 * 'x' - section is executable
3797 * 's' - section is sharable
3798 *
3799 * Section Alignment:
3800 * '0' - align to byte boundary
3801 * '1' - align to halfword undary
3802 * '2' - align to word boundary
3803 * '3' - align to doubleword boundary
3804 * '4' - align to quadword boundary
3805 * '5' - align to 32 byte boundary
3806 * '6' - align to 64 byte boundary
3807 *
3808 */
3809
3810void
3811ppc_pe_section (ignore)
5480ccf3 3812 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3813{
3814 /* Strip out the section name */
3815 char *section_name;
3816 char c;
3817 char *name;
3818 unsigned int exp;
3819 flagword flags;
3820 segT sec;
3821 int align;
3822
3823 section_name = input_line_pointer;
3824 c = get_symbol_end ();
3825
3826 name = xmalloc (input_line_pointer - section_name + 1);
3827 strcpy (name, section_name);
3828
3829 *input_line_pointer = c;
3830
3831 SKIP_WHITESPACE ();
3832
3833 exp = 0;
3834 flags = SEC_NO_FLAGS;
3835
3836 if (strcmp (name, ".idata$2") == 0)
3837 {
3838 align = 0;
3839 }
3840 else if (strcmp (name, ".idata$3") == 0)
3841 {
3842 align = 0;
3843 }
3844 else if (strcmp (name, ".idata$4") == 0)
3845 {
3846 align = 2;
3847 }
3848 else if (strcmp (name, ".idata$5") == 0)
3849 {
3850 align = 2;
3851 }
3852 else if (strcmp (name, ".idata$6") == 0)
3853 {
3854 align = 1;
3855 }
3856 else
3857 align = 4; /* default alignment to 16 byte boundary */
3858
3859 if (*input_line_pointer == ',')
3860 {
3861 ++input_line_pointer;
3862 SKIP_WHITESPACE ();
3863 if (*input_line_pointer != '"')
3864 exp = get_absolute_expression ();
3865 else
3866 {
3867 ++input_line_pointer;
3868 while (*input_line_pointer != '"'
3869 && ! is_end_of_line[(unsigned char) *input_line_pointer])
3870 {
3871 switch (*input_line_pointer)
3872 {
3873 /* Section Contents */
3874 case 'a': /* unknown */
3875 as_bad (_("Unsupported section attribute -- 'a'"));
3876 break;
3877 case 'c': /* code section */
81d4177b 3878 flags |= SEC_CODE;
252b5132
RH		 3879 break;
3880 case 'd': /* section has initialized data */
3881 flags |= SEC_DATA;
3882 break;
3883 case 'u': /* section has uninitialized data */
3884 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
3885 in winnt.h */
3886 flags |= SEC_ROM;
3887 break;
3888 case 'i': /* section contains directives (info) */
3889 /* FIXME: This is IMAGE_SCN_LNK_INFO
3890 in winnt.h */
3891 flags |= SEC_HAS_CONTENTS;
3892 break;
3893 case 'n': /* section can be discarded */
81d4177b 3894 flags &=~ SEC_LOAD;
252b5132
RH		 3895 break;
3896 case 'R': /* Remove section at link time */
3897 flags |= SEC_NEVER_LOAD;
3898 break;
3899
3900 /* Section Protection */
3901 case 'r': /* section is readable */
3902 flags |= IMAGE_SCN_MEM_READ;
3903 break;
3904 case 'w': /* section is writeable */
3905 flags |= IMAGE_SCN_MEM_WRITE;
3906 break;
3907 case 'x': /* section is executable */
3908 flags |= IMAGE_SCN_MEM_EXECUTE;
3909 break;
3910 case 's': /* section is sharable */
3911 flags |= IMAGE_SCN_MEM_SHARED;
3912 break;
3913
3914 /* Section Alignment */
3915 case '0': /* align to byte boundary */
3916 flags |= IMAGE_SCN_ALIGN_1BYTES;
3917 align = 0;
3918 break;
3919 case '1': /* align to halfword boundary */
3920 flags |= IMAGE_SCN_ALIGN_2BYTES;
3921 align = 1;
3922 break;
3923 case '2': /* align to word boundary */
3924 flags |= IMAGE_SCN_ALIGN_4BYTES;
3925 align = 2;
3926 break;
3927 case '3': /* align to doubleword boundary */
3928 flags |= IMAGE_SCN_ALIGN_8BYTES;
3929 align = 3;
3930 break;
3931 case '4': /* align to quadword boundary */
3932 flags |= IMAGE_SCN_ALIGN_16BYTES;
3933 align = 4;
3934 break;
3935 case '5': /* align to 32 byte boundary */
3936 flags |= IMAGE_SCN_ALIGN_32BYTES;
3937 align = 5;
3938 break;
3939 case '6': /* align to 64 byte boundary */
3940 flags |= IMAGE_SCN_ALIGN_64BYTES;
3941 align = 6;
3942 break;
3943
3944 default:
3945 as_bad(_("unknown section attribute '%c'"),
3946 *input_line_pointer);
3947 break;
3948 }
3949 ++input_line_pointer;
3950 }
3951 if (*input_line_pointer == '"')
3952 ++input_line_pointer;
3953 }
3954 }
3955
3956 sec = subseg_new (name, (subsegT) exp);
3957
3958 ppc_set_current_section(sec);
3959
3960 if (flags != SEC_NO_FLAGS)
3961 {
3962 if (! bfd_set_section_flags (stdoutput, sec, flags))
3963 as_bad (_("error setting flags for \"%s\": %s"),
3964 bfd_section_name (stdoutput, sec),
3965 bfd_errmsg (bfd_get_error ()));
3966 }
3967
3968 bfd_set_section_alignment(stdoutput, sec, align);
3969
3970}
3971
3972static void
3973ppc_pe_function (ignore)
5480ccf3 3974 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3975{
3976 char *name;
3977 char endc;
3978 symbolS *ext_sym;
3979
3980 name = input_line_pointer;
3981 endc = get_symbol_end ();
3982
3983 ext_sym = symbol_find_or_make (name);
3984
3985 *input_line_pointer = endc;
3986
3987 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
3988 SF_SET_FUNCTION (ext_sym);
3989 SF_SET_PROCESS (ext_sym);
3990 coff_add_linesym (ext_sym);
3991
3992 demand_empty_rest_of_line ();
3993}
3994
3995static void
3996ppc_pe_tocd (ignore)
5480ccf3 3997 int ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3998{
3999 if (tocdata_section == 0)
4000 {
4001 tocdata_section = subseg_new (".tocd", 0);
4002 /* FIXME: section flags won't work */
4003 bfd_set_section_flags (stdoutput, tocdata_section,
4004 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4005 | SEC_READONLY | SEC_DATA ));
4006
4007 bfd_set_section_alignment (stdoutput, tocdata_section, 2);
4008 }
4009 else
4010 {
4011 rdata_section = subseg_new (".tocd", 0);
4012 }
4013
4014 ppc_set_current_section(tocdata_section);
4015
4016 demand_empty_rest_of_line ();
4017}
4018
4019/* Don't adjust TOC relocs to use the section symbol. */
4020
4021int
4022ppc_pe_fix_adjustable (fix)
4023 fixS *fix;
4024{
4025 return fix->fx_r_type != BFD_RELOC_PPC_TOC16;
4026}
4027
4028#endif
4029\f
4030#ifdef OBJ_XCOFF
4031
4032/* XCOFF specific symbol and file handling. */
4033
4034/* Canonicalize the symbol name. We use the to force the suffix, if
4035 any, to use square brackets, and to be in upper case. */
4036
4037char *
4038ppc_canonicalize_symbol_name (name)
4039 char *name;
4040{
4041 char *s;
4042
4043 if (ppc_stab_symbol)
4044 return name;
4045
4046 for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
4047 ;
4048 if (*s != '\0')
4049 {
4050 char brac;
4051
4052 if (*s == '[')
4053 brac = ']';
4054 else
4055 {
4056 *s = '[';
4057 brac = '}';
4058 }
4059
4060 for (s++; *s != '\0' && *s != brac; s++)
4061 if (islower (*s))
4062 *s = toupper (*s);
4063
4064 if (*s == '\0' || s[1] != '\0')
4065 as_bad (_("bad symbol suffix"));
4066
4067 *s = ']';
4068 }
4069
4070 return name;
4071}
4072
4073/* Set the class of a symbol based on the suffix, if any. This is
4074 called whenever a new symbol is created. */
4075
4076void
4077ppc_symbol_new_hook (sym)
4078 symbolS *sym;
4079{
809ffe0d 4080 struct ppc_tc_sy *tc;
252b5132
RH		 4081 const char *s;
4082
809ffe0d
ILT		 4083 tc = symbol_get_tc (sym);
4084 tc->next = NULL;
4085 tc->output = 0;
4086 tc->class = -1;
4087 tc->real_name = NULL;
4088 tc->subseg = 0;
4089 tc->align = 0;
4090 tc->size = NULL;
4091 tc->within = NULL;
252b5132
RH		 4092
4093 if (ppc_stab_symbol)
4094 return;
4095
4096 s = strchr (S_GET_NAME (sym), '[');
4097 if (s == (const char *) NULL)
4098 {
4099 /* There is no suffix. */
4100 return;
4101 }
4102
4103 ++s;
4104
4105 switch (s[0])
4106 {
4107 case 'B':
4108 if (strcmp (s, "BS]") == 0)
809ffe0d 4109 tc->class = XMC_BS;
252b5132
RH		 4110 break;
4111 case 'D':
4112 if (strcmp (s, "DB]") == 0)
809ffe0d 4113 tc->class = XMC_DB;
252b5132 4114 else if (strcmp (s, "DS]") == 0)
809ffe0d 4115 tc->class = XMC_DS;
252b5132
RH		 4116 break;
4117 case 'G':
4118 if (strcmp (s, "GL]") == 0)
809ffe0d 4119 tc->class = XMC_GL;
252b5132
RH		 4120 break;
4121 case 'P':
4122 if (strcmp (s, "PR]") == 0)
809ffe0d 4123 tc->class = XMC_PR;
252b5132
RH		 4124 break;
4125 case 'R':
4126 if (strcmp (s, "RO]") == 0)
809ffe0d 4127 tc->class = XMC_RO;
252b5132 4128 else if (strcmp (s, "RW]") == 0)
809ffe0d 4129 tc->class = XMC_RW;
252b5132
RH		 4130 break;
4131 case 'S':
4132 if (strcmp (s, "SV]") == 0)
809ffe0d 4133 tc->class = XMC_SV;
252b5132
RH		 4134 break;
4135 case 'T':
4136 if (strcmp (s, "TC]") == 0)
809ffe0d 4137 tc->class = XMC_TC;
252b5132 4138 else if (strcmp (s, "TI]") == 0)
809ffe0d 4139 tc->class = XMC_TI;
252b5132 4140 else if (strcmp (s, "TB]") == 0)
809ffe0d 4141 tc->class = XMC_TB;
252b5132 4142 else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
809ffe0d 4143 tc->class = XMC_TC0;
252b5132
RH		 4144 break;
4145 case 'U':
4146 if (strcmp (s, "UA]") == 0)
809ffe0d 4147 tc->class = XMC_UA;
252b5132 4148 else if (strcmp (s, "UC]") == 0)
809ffe0d 4149 tc->class = XMC_UC;
252b5132
RH		 4150 break;
4151 case 'X':
4152 if (strcmp (s, "XO]") == 0)
809ffe0d 4153 tc->class = XMC_XO;
252b5132
RH		 4154 break;
4155 }
4156
809ffe0d 4157 if (tc->class == -1)
252b5132
RH		 4158 as_bad (_("Unrecognized symbol suffix"));
4159}
4160
4161/* Set the class of a label based on where it is defined. This
4162 handles symbols without suffixes. Also, move the symbol so that it
4163 follows the csect symbol. */
4164
4165void
4166ppc_frob_label (sym)
4167 symbolS *sym;
4168{
4169 if (ppc_current_csect != (symbolS *) NULL)
4170 {
809ffe0d
ILT		 4171 if (symbol_get_tc (sym)->class == -1)
4172 symbol_get_tc (sym)->class = symbol_get_tc (ppc_current_csect)->class;
252b5132
RH		 4173
4174 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
809ffe0d
ILT		 4175 symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
4176 &symbol_rootP, &symbol_lastP);
4177 symbol_get_tc (ppc_current_csect)->within = sym;
252b5132
RH		 4178 }
4179}
4180
4181/* This variable is set by ppc_frob_symbol if any absolute symbols are
4182 seen. It tells ppc_adjust_symtab whether it needs to look through
4183 the symbols. */
4184
4185static boolean ppc_saw_abs;
4186
4187/* Change the name of a symbol just before writing it out. Set the
4188 real name if the .rename pseudo-op was used. Otherwise, remove any
4189 class suffix. Return 1 if the symbol should not be included in the
4190 symbol table. */
4191
4192int
4193ppc_frob_symbol (sym)
4194 symbolS *sym;
4195{
4196 static symbolS *ppc_last_function;
4197 static symbolS *set_end;
4198
4199 /* Discard symbols that should not be included in the output symbol
4200 table. */
809ffe0d
ILT		 4201 if (! symbol_used_in_reloc_p (sym)
4202 && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
252b5132 4203 || (! S_IS_EXTERNAL (sym)
809ffe0d 4204 && ! symbol_get_tc (sym)->output
252b5132
RH		 4205 && S_GET_STORAGE_CLASS (sym) != C_FILE)))
4206 return 1;
4207
809ffe0d
ILT		 4208 if (symbol_get_tc (sym)->real_name != (char *) NULL)
4209 S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
252b5132
RH		 4210 else
4211 {
4212 const char *name;
4213 const char *s;
4214
4215 name = S_GET_NAME (sym);
4216 s = strchr (name, '[');
4217 if (s != (char *) NULL)
4218 {
4219 unsigned int len;
4220 char *snew;
4221
4222 len = s - name;
4223 snew = xmalloc (len + 1);
4224 memcpy (snew, name, len);
4225 snew[len] = '\0';
4226
4227 S_SET_NAME (sym, snew);
4228 }
4229 }
4230
4231 if (set_end != (symbolS *) NULL)
4232 {
4233 SA_SET_SYM_ENDNDX (set_end, sym);
4234 set_end = NULL;
4235 }
4236
4237 if (SF_GET_FUNCTION (sym))
4238 {
4239 if (ppc_last_function != (symbolS *) NULL)
4240 as_bad (_("two .function pseudo-ops with no intervening .ef"));
4241 ppc_last_function = sym;
809ffe0d 4242 if (symbol_get_tc (sym)->size != (symbolS *) NULL)
252b5132 4243 {
6386f3a7 4244 resolve_symbol_value (symbol_get_tc (sym)->size);
809ffe0d
ILT		 4245 SA_SET_SYM_FSIZE (sym,
4246 (long) S_GET_VALUE (symbol_get_tc (sym)->size));
252b5132
RH		 4247 }
4248 }
4249 else if (S_GET_STORAGE_CLASS (sym) == C_FCN
4250 && strcmp (S_GET_NAME (sym), ".ef") == 0)
4251 {
4252 if (ppc_last_function == (symbolS *) NULL)
4253 as_bad (_(".ef with no preceding .function"));
4254 else
4255 {
4256 set_end = ppc_last_function;
4257 ppc_last_function = NULL;
4258
4259 /* We don't have a C_EFCN symbol, but we need to force the
4260 COFF backend to believe that it has seen one. */
4261 coff_last_function = NULL;
4262 }
4263 }
4264
4265 if (! S_IS_EXTERNAL (sym)
809ffe0d 4266 && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
252b5132
RH		 4267 && S_GET_STORAGE_CLASS (sym) != C_FILE
4268 && S_GET_STORAGE_CLASS (sym) != C_FCN
4269 && S_GET_STORAGE_CLASS (sym) != C_BLOCK
4270 && S_GET_STORAGE_CLASS (sym) != C_BSTAT
4271 && S_GET_STORAGE_CLASS (sym) != C_ESTAT
4272 && S_GET_STORAGE_CLASS (sym) != C_BINCL
4273 && S_GET_STORAGE_CLASS (sym) != C_EINCL
4274 && S_GET_SEGMENT (sym) != ppc_coff_debug_section)
4275 S_SET_STORAGE_CLASS (sym, C_HIDEXT);
4276
4277 if (S_GET_STORAGE_CLASS (sym) == C_EXT
4278 || S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
4279 {
4280 int i;
4281 union internal_auxent *a;
4282
4283 /* Create a csect aux. */
4284 i = S_GET_NUMBER_AUXILIARY (sym);
4285 S_SET_NUMBER_AUXILIARY (sym, i + 1);
809ffe0d
ILT		 4286 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent;
4287 if (symbol_get_tc (sym)->class == XMC_TC0)
252b5132
RH		 4288 {
4289 /* This is the TOC table. */
4290 know (strcmp (S_GET_NAME (sym), "TOC") == 0);
4291 a->x_csect.x_scnlen.l = 0;
4292 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
4293 }
809ffe0d 4294 else if (symbol_get_tc (sym)->subseg != 0)
252b5132
RH		 4295 {
4296 /* This is a csect symbol. x_scnlen is the size of the
4297 csect. */
809ffe0d 4298 if (symbol_get_tc (sym)->next == (symbolS *) NULL)
252b5132
RH		 4299 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4300 S_GET_SEGMENT (sym))
4301 - S_GET_VALUE (sym));
4302 else
4303 {
6386f3a7 4304 resolve_symbol_value (symbol_get_tc (sym)->next);
809ffe0d 4305 a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next)
252b5132
RH		 4306 - S_GET_VALUE (sym));
4307 }
809ffe0d 4308 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD;
252b5132
RH		 4309 }
4310 else if (S_GET_SEGMENT (sym) == bss_section)
4311 {
4312 /* This is a common symbol. */
809ffe0d
ILT		 4313 a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset;
4314 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM;
252b5132 4315 if (S_IS_EXTERNAL (sym))
809ffe0d 4316 symbol_get_tc (sym)->class = XMC_RW;
252b5132 4317 else
809ffe0d 4318 symbol_get_tc (sym)->class = XMC_BS;
252b5132
RH		 4319 }
4320 else if (S_GET_SEGMENT (sym) == absolute_section)
4321 {
4322 /* This is an absolute symbol. The csect will be created by
4323 ppc_adjust_symtab. */
4324 ppc_saw_abs = true;
4325 a->x_csect.x_smtyp = XTY_LD;
809ffe0d
ILT		 4326 if (symbol_get_tc (sym)->class == -1)
4327 symbol_get_tc (sym)->class = XMC_XO;
252b5132
RH		 4328 }
4329 else if (! S_IS_DEFINED (sym))
4330 {
4331 /* This is an external symbol. */
4332 a->x_csect.x_scnlen.l = 0;
4333 a->x_csect.x_smtyp = XTY_ER;
4334 }
809ffe0d 4335 else if (symbol_get_tc (sym)->class == XMC_TC)
252b5132
RH		 4336 {
4337 symbolS *next;
4338
4339 /* This is a TOC definition. x_scnlen is the size of the
4340 TOC entry. */
4341 next = symbol_next (sym);
809ffe0d 4342 while (symbol_get_tc (next)->class == XMC_TC0)
252b5132
RH		 4343 next = symbol_next (next);
4344 if (next == (symbolS *) NULL
809ffe0d 4345 || symbol_get_tc (next)->class != XMC_TC)
252b5132
RH		 4346 {
4347 if (ppc_after_toc_frag == (fragS *) NULL)
4348 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4349 data_section)
4350 - S_GET_VALUE (sym));
4351 else
4352 a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address
4353 - S_GET_VALUE (sym));
4354 }
4355 else
4356 {
6386f3a7 4357 resolve_symbol_value (next);
252b5132
RH		 4358 a->x_csect.x_scnlen.l = (S_GET_VALUE (next)
4359 - S_GET_VALUE (sym));
4360 }
4361 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
4362 }
4363 else
4364 {
4365 symbolS *csect;
4366
4367 /* This is a normal symbol definition. x_scnlen is the
4368 symbol index of the containing csect. */
4369 if (S_GET_SEGMENT (sym) == text_section)
4370 csect = ppc_text_csects;
4371 else if (S_GET_SEGMENT (sym) == data_section)
4372 csect = ppc_data_csects;
4373 else
4374 abort ();
4375
4376 /* Skip the initial dummy symbol. */
809ffe0d 4377 csect = symbol_get_tc (csect)->next;
252b5132
RH		 4378
4379 if (csect == (symbolS *) NULL)
4380 {
4381 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
4382 a->x_csect.x_scnlen.l = 0;
4383 }
4384 else
4385 {
809ffe0d 4386 while (symbol_get_tc (csect)->next != (symbolS *) NULL)
252b5132 4387 {
6386f3a7 4388 resolve_symbol_value (symbol_get_tc (csect)->next);
809ffe0d
ILT		 4389 if (S_GET_VALUE (symbol_get_tc (csect)->next)
4390 > S_GET_VALUE (sym))
252b5132 4391 break;
809ffe0d 4392 csect = symbol_get_tc (csect)->next;
252b5132
RH		 4393 }
4394
809ffe0d
ILT		 4395 a->x_csect.x_scnlen.p =
4396 coffsymbol (symbol_get_bfdsym (csect))->native;
4397 coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen =
4398 1;
252b5132
RH		 4399 }
4400 a->x_csect.x_smtyp = XTY_LD;
4401 }
81d4177b 4402
252b5132
RH		 4403 a->x_csect.x_parmhash = 0;
4404 a->x_csect.x_snhash = 0;
809ffe0d 4405 if (symbol_get_tc (sym)->class == -1)
252b5132
RH		 4406 a->x_csect.x_smclas = XMC_PR;
4407 else
809ffe0d 4408 a->x_csect.x_smclas = symbol_get_tc (sym)->class;
252b5132
RH		 4409 a->x_csect.x_stab = 0;
4410 a->x_csect.x_snstab = 0;
4411
4412 /* Don't let the COFF backend resort these symbols. */
809ffe0d 4413 symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
252b5132
RH		 4414 }
4415 else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
4416 {
4417 /* We want the value to be the symbol index of the referenced
4418 csect symbol. BFD will do that for us if we set the right
4419 flags. */
4420 S_SET_VALUE (sym,
809ffe0d
ILT		 4421 ((valueT)
4422 coffsymbol (symbol_get_bfdsym
4423 (symbol_get_tc (sym)->within))->native));
4424 coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
252b5132
RH		 4425 }
4426 else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
4427 {
4428 symbolS *block;
4429 symbolS *csect;
4430
4431 /* The value is the offset from the enclosing csect. */
809ffe0d
ILT		 4432 block = symbol_get_tc (sym)->within;
4433 csect = symbol_get_tc (block)->within;
6386f3a7 4434 resolve_symbol_value (csect);
252b5132
RH		 4435 S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect));
4436 }
4437 else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
4438 || S_GET_STORAGE_CLASS (sym) == C_EINCL)
4439 {
4440 /* We want the value to be a file offset into the line numbers.
4441 BFD will do that for us if we set the right flags. We have
4442 already set the value correctly. */
809ffe0d 4443 coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
252b5132
RH		 4444 }
4445
4446 return 0;
4447}
4448
4449/* Adjust the symbol table. This creates csect symbols for all
4450 absolute symbols. */
4451
4452void
4453ppc_adjust_symtab ()
4454{
4455 symbolS *sym;
4456
4457 if (! ppc_saw_abs)
4458 return;
4459
4460 for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
4461 {
4462 symbolS *csect;
4463 int i;
4464 union internal_auxent *a;
4465
4466 if (S_GET_SEGMENT (sym) != absolute_section)
4467 continue;
4468
4469 csect = symbol_create (".abs[XO]", absolute_section,
4470 S_GET_VALUE (sym), &zero_address_frag);
809ffe0d 4471 symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
252b5132
RH		 4472 S_SET_STORAGE_CLASS (csect, C_HIDEXT);
4473 i = S_GET_NUMBER_AUXILIARY (csect);
4474 S_SET_NUMBER_AUXILIARY (csect, i + 1);
809ffe0d 4475 a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent;
252b5132
RH		 4476 a->x_csect.x_scnlen.l = 0;
4477 a->x_csect.x_smtyp = XTY_SD;
4478 a->x_csect.x_parmhash = 0;
4479 a->x_csect.x_snhash = 0;
4480 a->x_csect.x_smclas = XMC_XO;
4481 a->x_csect.x_stab = 0;
4482 a->x_csect.x_snstab = 0;
4483
4484 symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
4485
4486 i = S_GET_NUMBER_AUXILIARY (sym);
809ffe0d
ILT		 4487 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent;
4488 a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native;
4489 coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1;
252b5132
RH		 4490 }
4491
4492 ppc_saw_abs = false;
4493}
4494
4495/* Set the VMA for a section. This is called on all the sections in
4496 turn. */
4497
4498void
4499ppc_frob_section (sec)
4500 asection *sec;
4501{
4502 static bfd_size_type vma = 0;
4503
4504 bfd_set_section_vma (stdoutput, sec, vma);
4505 vma += bfd_section_size (stdoutput, sec);
4506}
4507
4508#endif /* OBJ_XCOFF */
4509\f
4510/* Turn a string in input_line_pointer into a floating point constant
bc0d738a
NC		 4511 of type TYPE, and store the appropriate bytes in *LITP. The number
4512 of LITTLENUMS emitted is stored in *SIZEP. An error message is
252b5132
RH		 4513 returned, or NULL on OK. */
4514
4515char *
4516md_atof (type, litp, sizep)
4517 int type;
4518 char *litp;
4519 int *sizep;
4520{
4521 int prec;
4522 LITTLENUM_TYPE words[4];
4523 char *t;
4524 int i;
4525
4526 switch (type)
4527 {
4528 case 'f':
4529 prec = 2;
4530 break;
4531
4532 case 'd':
4533 prec = 4;
4534 break;
4535
4536 default:
4537 *sizep = 0;
4538 return _("bad call to md_atof");
4539 }
4540
4541 t = atof_ieee (input_line_pointer, type, words);
4542 if (t)
4543 input_line_pointer = t;
4544
4545 *sizep = prec * 2;
4546
4547 if (target_big_endian)
4548 {
4549 for (i = 0; i < prec; i++)
4550 {
4551 md_number_to_chars (litp, (valueT) words[i], 2);
4552 litp += 2;
4553 }
4554 }
4555 else
4556 {
4557 for (i = prec - 1; i >= 0; i--)
4558 {
4559 md_number_to_chars (litp, (valueT) words[i], 2);
4560 litp += 2;
4561 }
4562 }
81d4177b 4563
252b5132
RH		 4564 return NULL;
4565}
4566
4567/* Write a value out to the object file, using the appropriate
4568 endianness. */
4569
4570void
4571md_number_to_chars (buf, val, n)
4572 char *buf;
4573 valueT val;
4574 int n;
4575{
4576 if (target_big_endian)
4577 number_to_chars_bigendian (buf, val, n);
4578 else
4579 number_to_chars_littleendian (buf, val, n);
4580}
4581
4582/* Align a section (I don't know why this is machine dependent). */
4583
4584valueT
4585md_section_align (seg, addr)
4586 asection *seg;
4587 valueT addr;
4588{
4589 int align = bfd_get_section_alignment (stdoutput, seg);
4590
4591 return ((addr + (1 << align) - 1) & (-1 << align));
4592}
4593
4594/* We don't have any form of relaxing. */
4595
4596int
4597md_estimate_size_before_relax (fragp, seg)
92161534
ILT		 4598 fragS *fragp ATTRIBUTE_UNUSED;
4599 asection *seg ATTRIBUTE_UNUSED;
252b5132
RH		 4600{
4601 abort ();
4602 return 0;
4603}
4604
4605/* Convert a machine dependent frag. We never generate these. */
4606
4607void
4608md_convert_frag (abfd, sec, fragp)
92161534
ILT		 4609 bfd *abfd ATTRIBUTE_UNUSED;
4610 asection *sec ATTRIBUTE_UNUSED;
4611 fragS *fragp ATTRIBUTE_UNUSED;
252b5132
RH		 4612{
4613 abort ();
4614}
4615
4616/* We have no need to default values of symbols. */
4617
252b5132
RH		 4618symbolS *
4619md_undefined_symbol (name)
92161534 4620 char *name ATTRIBUTE_UNUSED;
252b5132
RH		 4621{
4622 return 0;
4623}
4624\f
4625/* Functions concerning relocs. */
4626
4627/* The location from which a PC relative jump should be calculated,
4628 given a PC relative reloc. */
4629
4630long
4631md_pcrel_from_section (fixp, sec)
4632 fixS *fixp;
92161534 4633 segT sec ATTRIBUTE_UNUSED;
252b5132
RH		 4634{
4635 return fixp->fx_frag->fr_address + fixp->fx_where;
4636}
4637
4638#ifdef OBJ_XCOFF
4639
4640/* This is called to see whether a fixup should be adjusted to use a
4641 section symbol. We take the opportunity to change a fixup against
4642 a symbol in the TOC subsegment into a reloc against the
4643 corresponding .tc symbol. */
4644
4645int
4646ppc_fix_adjustable (fix)
4647 fixS *fix;
4648{
4649 valueT val;
4650
6386f3a7 4651 resolve_symbol_value (fix->fx_addsy);
252b5132
RH		 4652 val = S_GET_VALUE (fix->fx_addsy);
4653 if (ppc_toc_csect != (symbolS *) NULL
4654 && fix->fx_addsy != (symbolS *) NULL
4655 && fix->fx_addsy != ppc_toc_csect
4656 && S_GET_SEGMENT (fix->fx_addsy) == data_section
4657 && val >= ppc_toc_frag->fr_address
4658 && (ppc_after_toc_frag == (fragS *) NULL
4659 || val < ppc_after_toc_frag->fr_address))
4660 {
4661 symbolS *sy;
4662
4663 for (sy = symbol_next (ppc_toc_csect);
4664 sy != (symbolS *) NULL;
4665 sy = symbol_next (sy))
4666 {
809ffe0d 4667 if (symbol_get_tc (sy)->class == XMC_TC0)
252b5132 4668 continue;
809ffe0d 4669 if (symbol_get_tc (sy)->class != XMC_TC)
252b5132 4670 break;
6386f3a7 4671 resolve_symbol_value (sy);
252b5132
RH		 4672 if (val == S_GET_VALUE (sy))
4673 {
4674 fix->fx_addsy = sy;
4675 fix->fx_addnumber = val - ppc_toc_frag->fr_address;
4676 return 0;
4677 }
4678 }
4679
4680 as_bad_where (fix->fx_file, fix->fx_line,
4681 _("symbol in .toc does not match any .tc"));
4682 }
4683
4684 /* Possibly adjust the reloc to be against the csect. */
4685 if (fix->fx_addsy != (symbolS *) NULL
809ffe0d
ILT		 4686 && symbol_get_tc (fix->fx_addsy)->subseg == 0
4687 && symbol_get_tc (fix->fx_addsy)->class != XMC_TC0
4688 && symbol_get_tc (fix->fx_addsy)->class != XMC_TC
252b5132
RH		 4689 && S_GET_SEGMENT (fix->fx_addsy) != bss_section
4690 /* Don't adjust if this is a reloc in the toc section. */
4691 && (S_GET_SEGMENT (fix->fx_addsy) != data_section
4692 || ppc_toc_csect == NULL
4693 || val < ppc_toc_frag->fr_address
4694 || (ppc_after_toc_frag != NULL
4695 && val >= ppc_after_toc_frag->fr_address)))
4696 {
4697 symbolS *csect;
4698
4699 if (S_GET_SEGMENT (fix->fx_addsy) == text_section)
4700 csect = ppc_text_csects;
4701 else if (S_GET_SEGMENT (fix->fx_addsy) == data_section)
4702 csect = ppc_data_csects;
4703 else
4704 abort ();
4705
4706 /* Skip the initial dummy symbol. */
809ffe0d 4707 csect = symbol_get_tc (csect)->next;
252b5132
RH		 4708
4709 if (csect != (symbolS *) NULL)
4710 {
809ffe0d
ILT		 4711 while (symbol_get_tc (csect)->next != (symbolS *) NULL
4712 && (symbol_get_frag (symbol_get_tc (csect)->next)->fr_address
2c1c4c62 4713 <= val))
252b5132
RH		 4714 {
4715 /* If the csect address equals the symbol value, then we
4716 have to look through the full symbol table to see
4717 whether this is the csect we want. Note that we will
4718 only get here if the csect has zero length. */
2c1c4c62 4719 if ((symbol_get_frag (csect)->fr_address == val)
252b5132
RH		 4720 && S_GET_VALUE (csect) == S_GET_VALUE (fix->fx_addsy))
4721 {
4722 symbolS *scan;
4723
809ffe0d 4724 for (scan = symbol_next (csect);
252b5132 4725 scan != NULL;
809ffe0d 4726 scan = symbol_next (scan))
252b5132 4727 {
809ffe0d 4728 if (symbol_get_tc (scan)->subseg != 0)
252b5132
RH		 4729 break;
4730 if (scan == fix->fx_addsy)
4731 break;
4732 }
4733
4734 /* If we found the symbol before the next csect
4735 symbol, then this is the csect we want. */
4736 if (scan == fix->fx_addsy)
4737 break;
4738 }
4739
809ffe0d 4740 csect = symbol_get_tc (csect)->next;
252b5132
RH		 4741 }
4742
4743 fix->fx_offset += (S_GET_VALUE (fix->fx_addsy)
809ffe0d 4744 - symbol_get_frag (csect)->fr_address);
252b5132
RH		 4745 fix->fx_addsy = csect;
4746 }
4747 }
4748
4749 /* Adjust a reloc against a .lcomm symbol to be against the base
4750 .lcomm. */
4751 if (fix->fx_addsy != (symbolS *) NULL
4752 && S_GET_SEGMENT (fix->fx_addsy) == bss_section
4753 && ! S_IS_EXTERNAL (fix->fx_addsy))
4754 {
6386f3a7 4755 resolve_symbol_value (symbol_get_frag (fix->fx_addsy)->fr_symbol);
809ffe0d
ILT		 4756 fix->fx_offset +=
4757 (S_GET_VALUE (fix->fx_addsy)
4758 - S_GET_VALUE (symbol_get_frag (fix->fx_addsy)->fr_symbol));
4759 fix->fx_addsy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
252b5132
RH		 4760 }
4761
4762 return 0;
4763}
4764
4765/* A reloc from one csect to another must be kept. The assembler
4766 will, of course, keep relocs between sections, and it will keep
4767 absolute relocs, but we need to force it to keep PC relative relocs
4768 between two csects in the same section. */
4769
4770int
4771ppc_force_relocation (fix)
4772 fixS *fix;
4773{
4774 /* At this point fix->fx_addsy should already have been converted to
4775 a csect symbol. If the csect does not include the fragment, then
4776 we need to force the relocation. */
4777 if (fix->fx_pcrel
4778 && fix->fx_addsy != NULL
809ffe0d
ILT		 4779 && symbol_get_tc (fix->fx_addsy)->subseg != 0
4780 && ((symbol_get_frag (fix->fx_addsy)->fr_address
4781 > fix->fx_frag->fr_address)
4782 || (symbol_get_tc (fix->fx_addsy)->next != NULL
4783 && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
252b5132
RH		 4784 <= fix->fx_frag->fr_address))))
4785 return 1;
4786
4787 return 0;
4788}
4789
4790#endif /* OBJ_XCOFF */
4791
4792/* See whether a symbol is in the TOC section. */
4793
4794static int
4795ppc_is_toc_sym (sym)
4796 symbolS *sym;
4797{
4798#ifdef OBJ_XCOFF
809ffe0d 4799 return symbol_get_tc (sym)->class == XMC_TC;
252b5132
RH		 4800#else
4801 return strcmp (segment_name (S_GET_SEGMENT (sym)), ".got") == 0;
4802#endif
4803}
4804
4805/* Apply a fixup to the object code. This is called for all the
4806 fixups we generated by the call to fix_new_exp, above. In the call
4807 above we used a reloc code which was the largest legal reloc code
4808 plus the operand index. Here we undo that to recover the operand
4809 index. At this point all symbol values should be fully resolved,
4810 and we attempt to completely resolve the reloc. If we can not do
4811 that, we determine the correct reloc code and put it back in the
4812 fixup. */
4813
4814int
4815md_apply_fix3 (fixp, valuep, seg)
4816 fixS *fixp;
4817 valueT *valuep;
4818 segT seg;
4819{
4820 valueT value;
4821
4822#ifdef OBJ_ELF
4823 value = *valuep;
4824 if (fixp->fx_addsy != NULL)
4825 {
4826 /* `*valuep' may contain the value of the symbol on which the reloc
4827 will be based; we have to remove it. */
49309057 4828 if (symbol_used_in_reloc_p (fixp->fx_addsy)
252b5132
RH		 4829 && S_GET_SEGMENT (fixp->fx_addsy) != absolute_section
4830 && S_GET_SEGMENT (fixp->fx_addsy) != undefined_section
4831 && ! bfd_is_com_section (S_GET_SEGMENT (fixp->fx_addsy)))
4832 value -= S_GET_VALUE (fixp->fx_addsy);
4833
4834 /* FIXME: Why '+'? Better yet, what exactly is '*valuep'
4835 supposed to be? I think this is related to various similar
4836 FIXMEs in tc-i386.c and tc-sparc.c. */
4837 if (fixp->fx_pcrel)
4838 value += fixp->fx_frag->fr_address + fixp->fx_where;
4839 }
4840 else
4841 {
4842 fixp->fx_done = 1;
4843 }
4844#else
4845 /* FIXME FIXME FIXME: The value we are passed in *valuep includes
4846 the symbol values. Since we are using BFD_ASSEMBLER, if we are
4847 doing this relocation the code in write.c is going to call
4848 bfd_install_relocation, which is also going to use the symbol
4849 value. That means that if the reloc is fully resolved we want to
4850 use *valuep since bfd_install_relocation is not being used.
4851 However, if the reloc is not fully resolved we do not want to use
4852 *valuep, and must use fx_offset instead. However, if the reloc
4853 is PC relative, we do want to use *valuep since it includes the
4854 result of md_pcrel_from. This is confusing. */
4855 if (fixp->fx_addsy == (symbolS *) NULL)
4856 {
4857 value = *valuep;
4858 fixp->fx_done = 1;
4859 }
4860 else if (fixp->fx_pcrel)
4861 value = *valuep;
4862 else
4863 {
4864 value = fixp->fx_offset;
4865 if (fixp->fx_subsy != (symbolS *) NULL)
4866 {
4867 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
4868 value -= S_GET_VALUE (fixp->fx_subsy);
4869 else
4870 {
4871 /* We can't actually support subtracting a symbol. */
4872 as_bad_where (fixp->fx_file, fixp->fx_line,
4873 _("expression too complex"));
4874 }
4875 }
4876 }
4877#endif
4878
4879 if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED)
4880 {
4881 int opindex;
4882 const struct powerpc_operand *operand;
4883 char *where;
4884 unsigned long insn;
4885
4886 opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED;
4887
4888 operand = &powerpc_operands[opindex];
4889
4890#ifdef OBJ_XCOFF
4891 /* It appears that an instruction like
4892 l 9,LC..1(30)
4893 when LC..1 is not a TOC symbol does not generate a reloc. It
4894 uses the offset of LC..1 within its csect. However, .long
4895 LC..1 will generate a reloc. I can't find any documentation
4896 on how these cases are to be distinguished, so this is a wild
4897 guess. These cases are generated by gcc -mminimal-toc. */
4898 if ((operand->flags & PPC_OPERAND_PARENS) != 0
4899 && operand->bits == 16
4900 && operand->shift == 0
4901 && operand->insert == NULL
4902 && fixp->fx_addsy != NULL
809ffe0d
ILT		 4903 && symbol_get_tc (fixp->fx_addsy)->subseg != 0
4904 && symbol_get_tc (fixp->fx_addsy)->class != XMC_TC
4905 && symbol_get_tc (fixp->fx_addsy)->class != XMC_TC0
252b5132
RH		 4906 && S_GET_SEGMENT (fixp->fx_addsy) != bss_section)
4907 {
4908 value = fixp->fx_offset;
4909 fixp->fx_done = 1;
4910 }
4911#endif
4912
4913 /* Fetch the instruction, insert the fully resolved operand
4914 value, and stuff the instruction back again. */
4915 where = fixp->fx_frag->fr_literal + fixp->fx_where;
4916 if (target_big_endian)
4917 insn = bfd_getb32 ((unsigned char *) where);
4918 else
4919 insn = bfd_getl32 ((unsigned char *) where);
4920 insn = ppc_insert_operand (insn, operand, (offsetT) value,
4921 fixp->fx_file, fixp->fx_line);
4922 if (target_big_endian)
4923 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
4924 else
4925 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
4926
4927 if (fixp->fx_done)
4928 {
4929 /* Nothing else to do here. */
4930 return 1;
4931 }
4932
4933 /* Determine a BFD reloc value based on the operand information.
4934 We are only prepared to turn a few of the operands into
4935 relocs.
4936 FIXME: We need to handle the DS field at the very least.
4937 FIXME: Selecting the reloc type is a bit haphazard; perhaps
4938 there should be a new field in the operand table. */
4939 if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
4940 && operand->bits == 26
4941 && operand->shift == 0)
4942 fixp->fx_r_type = BFD_RELOC_PPC_B26;
4943 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
4944 && operand->bits == 16
4945 && operand->shift == 0)
4946 fixp->fx_r_type = BFD_RELOC_PPC_B16;
4947 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
4948 && operand->bits == 26
4949 && operand->shift == 0)
4950 fixp->fx_r_type = BFD_RELOC_PPC_BA26;
4951 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
4952 && operand->bits == 16
4953 && operand->shift == 0)
4954 fixp->fx_r_type = BFD_RELOC_PPC_BA16;
4955 else if ((operand->flags & PPC_OPERAND_PARENS) != 0
4956 && operand->bits == 16
4957 && operand->shift == 0
252b5132
RH		 4958 && fixp->fx_addsy != NULL
4959 && ppc_is_toc_sym (fixp->fx_addsy))
4960 {
4961 fixp->fx_size = 2;
4962 if (target_big_endian)
4963 fixp->fx_where += 2;
4964 fixp->fx_r_type = BFD_RELOC_PPC_TOC16;
4965 }
4966 else
4967 {
4968 char *sfile;
4969 unsigned int sline;
4970
4971 /* Use expr_symbol_where to see if this is an expression
4972 symbol. */
4973 if (expr_symbol_where (fixp->fx_addsy, &sfile, &sline))
4974 as_bad_where (fixp->fx_file, fixp->fx_line,
4975 _("unresolved expression that must be resolved"));
4976 else
4977 as_bad_where (fixp->fx_file, fixp->fx_line,
4978 _("unsupported relocation type"));
4979 fixp->fx_done = 1;
4980 return 1;
4981 }
4982 }
4983 else
4984 {
4985#ifdef OBJ_ELF
4986 ppc_elf_validate_fix (fixp, seg);
4987#endif
4988 switch (fixp->fx_r_type)
4989 {
4990 case BFD_RELOC_32:
4991 case BFD_RELOC_CTOR:
4992 if (fixp->fx_pcrel)
4993 fixp->fx_r_type = BFD_RELOC_32_PCREL;
4994 /* fall through */
4995
4996 case BFD_RELOC_RVA:
4997 case BFD_RELOC_32_PCREL:
4998 case BFD_RELOC_32_BASEREL:
4999 case BFD_RELOC_PPC_EMB_NADDR32:
5000 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
5001 value, 4);
5002 break;
5003
7f6d05e8
CP		 5004 case BFD_RELOC_64:
5005 if (fixp->fx_pcrel)
5006 fixp->fx_r_type = BFD_RELOC_64_PCREL;
5007 /* fall through */
5008 case BFD_RELOC_64_PCREL:
5009 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
5010 value, 8);
81d4177b 5011 break;
252b5132
RH		 5012 case BFD_RELOC_LO16:
5013 case BFD_RELOC_16:
5014 case BFD_RELOC_GPREL16:
5015 case BFD_RELOC_16_GOT_PCREL:
5016 case BFD_RELOC_16_GOTOFF:
5017 case BFD_RELOC_LO16_GOTOFF:
5018 case BFD_RELOC_HI16_GOTOFF:
5019 case BFD_RELOC_HI16_S_GOTOFF:
5020 case BFD_RELOC_LO16_BASEREL:
5021 case BFD_RELOC_HI16_BASEREL:
5022 case BFD_RELOC_HI16_S_BASEREL:
5023 case BFD_RELOC_PPC_EMB_NADDR16:
5024 case BFD_RELOC_PPC_EMB_NADDR16_LO:
5025 case BFD_RELOC_PPC_EMB_NADDR16_HI:
5026 case BFD_RELOC_PPC_EMB_NADDR16_HA:
5027 case BFD_RELOC_PPC_EMB_SDAI16:
5028 case BFD_RELOC_PPC_EMB_SDA2REL:
5029 case BFD_RELOC_PPC_EMB_SDA2I16:
5030 case BFD_RELOC_PPC_EMB_RELSEC16:
5031 case BFD_RELOC_PPC_EMB_RELST_LO:
5032 case BFD_RELOC_PPC_EMB_RELST_HI:
5033 case BFD_RELOC_PPC_EMB_RELST_HA:
5034 case BFD_RELOC_PPC_EMB_RELSDA:
5035 case BFD_RELOC_PPC_TOC16:
5036 if (fixp->fx_pcrel)
5037 {
5038 if (fixp->fx_addsy != NULL)
5039 as_bad_where (fixp->fx_file, fixp->fx_line,
5040 _("cannot emit PC relative %s relocation against %s"),
5041 bfd_get_reloc_code_name (fixp->fx_r_type),
5042 S_GET_NAME (fixp->fx_addsy));
5043 else
5044 as_bad_where (fixp->fx_file, fixp->fx_line,
5045 _("cannot emit PC relative %s relocation"),
5046 bfd_get_reloc_code_name (fixp->fx_r_type));
5047 }
5048
5049 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
5050 value, 2);
5051 break;
5052
5053 /* This case happens when you write, for example,
5054 lis %r3,(L1-L2)@ha
5055 where L1 and L2 are defined later. */
5056 case BFD_RELOC_HI16:
5057 if (fixp->fx_pcrel)
5058 abort ();
5059 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
5060 value >> 16, 2);
5061 break;
5062 case BFD_RELOC_HI16_S:
5063 if (fixp->fx_pcrel)
5064 abort ();
5065 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
49309057 5066 (value + 0x8000) >> 16, 2);
252b5132
RH		 5067 break;
5068
5069 /* Because SDA21 modifies the register field, the size is set to 4
5070 bytes, rather than 2, so offset it here appropriately */
5071 case BFD_RELOC_PPC_EMB_SDA21:
5072 if (fixp->fx_pcrel)
5073 abort ();
5074
5075 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where
5076 + ((target_big_endian) ? 2 : 0),
5077 value, 2);
5078 break;
5079
5080 case BFD_RELOC_8:
5081 if (fixp->fx_pcrel)
5082 abort ();
5083
5084 md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where,
5085 value, 1);
5086 break;
5087
5088 case BFD_RELOC_24_PLT_PCREL:
5089 case BFD_RELOC_PPC_LOCAL24PC:
5090 if (!fixp->fx_pcrel && !fixp->fx_done)
5091 abort ();
5092
5093 if (fixp->fx_done)
5094 {
5095 char *where;
5096 unsigned long insn;
81d4177b 5097
252b5132
RH		 5098 /* Fetch the instruction, insert the fully resolved operand
5099 value, and stuff the instruction back again. */
5100 where = fixp->fx_frag->fr_literal + fixp->fx_where;
5101 if (target_big_endian)
5102 insn = bfd_getb32 ((unsigned char *) where);
5103 else
5104 insn = bfd_getl32 ((unsigned char *) where);
5105 if ((value & 3) != 0)
5106 as_bad_where (fixp->fx_file, fixp->fx_line,
5107 _("must branch to an address a multiple of 4"));
5108 if ((offsetT) value < -0x40000000
5109 || (offsetT) value >= 0x40000000)
5110 as_bad_where (fixp->fx_file, fixp->fx_line,
5111 _("@local or @plt branch destination is too far away, %ld bytes"),
5112 value);
5113 insn = insn | (value & 0x03fffffc);
5114 if (target_big_endian)
5115 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
5116 else
5117 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
5118 }
5119 break;
5120
5121 case BFD_RELOC_VTABLE_INHERIT:
5122 fixp->fx_done = 0;
5123 if (fixp->fx_addsy
5124 && !S_IS_DEFINED (fixp->fx_addsy)
5125 && !S_IS_WEAK (fixp->fx_addsy))
5126 S_SET_WEAK (fixp->fx_addsy);
5127 break;
5128
5129 case BFD_RELOC_VTABLE_ENTRY:
5130 fixp->fx_done = 0;
5131 break;
5132
5133 default:
bc805888 5134 fprintf (stderr,
252b5132
RH		 5135 _("Gas failure, reloc value %d\n"), fixp->fx_r_type);
5136 fflush(stderr);
5137 abort ();
5138 }
5139 }
5140
5141#ifdef OBJ_ELF
5142 fixp->fx_addnumber = value;
5143#else
5144 if (fixp->fx_r_type != BFD_RELOC_PPC_TOC16)
5145 fixp->fx_addnumber = 0;
5146 else
5147 {
5148#ifdef TE_PE
5149 fixp->fx_addnumber = 0;
5150#else
5151 /* We want to use the offset within the data segment of the
5152 symbol, not the actual VMA of the symbol. */
5153 fixp->fx_addnumber =
5154 - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixp->fx_addsy));
5155#endif
5156 }
5157#endif
5158
5159 return 1;
5160}
5161
5162/* Generate a reloc for a fixup. */
5163
5164arelent *
5165tc_gen_reloc (seg, fixp)
92161534 5166 asection *seg ATTRIBUTE_UNUSED;
252b5132
RH		 5167 fixS *fixp;
5168{
5169 arelent *reloc;
5170
5171 reloc = (arelent *) xmalloc (sizeof (arelent));
5172
49309057
ILT		 5173 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
5174 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
252b5132
RH		 5175 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
5176 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
5177 if (reloc->howto == (reloc_howto_type *) NULL)
5178 {
5179 as_bad_where (fixp->fx_file, fixp->fx_line,
5180 _("reloc %d not supported by object file format"), (int)fixp->fx_r_type);
5181 return NULL;
5182 }
5183 reloc->addend = fixp->fx_addnumber;
5184
5185 return reloc;
5186}
GDB Binutils - Deliverables
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