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* doc/c-ppc.texi (PowerPC-Opts): Add -mpower4 and -maltivec.
[binutils-gdb.git] / gas / config / tc-ppc.c
1 /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
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
21 02111-1307, USA. */
22
23 #include <stdio.h>
24 #include "as.h"
25 #include "safe-ctype.h"
26 #include "subsegs.h"
27
28 #include "opcode/ppc.h"
29
30 #ifdef OBJ_ELF
31 #include "elf/ppc.h"
32 #include "dwarf2dbg.h"
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. */
42 extern int target_big_endian;
43
44 /* Whether or not, we've set target_big_endian. */
45 static 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
56 /* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST,
57 HIGHESTA. */
58
59 /* #lo(value) denotes the least significant 16 bits of the indicated. */
60 #define PPC_LO(v) ((v) & 0xffff)
61
62 /* #hi(value) denotes bits 16 through 31 of the indicated value. */
63 #define PPC_HI(v) (((v) >> 16) & 0xffff)
64
65 /* #ha(value) denotes the high adjusted value: bits 16 through 31 of
66 the indicated value, compensating for #lo() being treated as a
67 signed number. */
68 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
69
70 /* #higher(value) denotes bits 32 through 47 of the indicated value. */
71 #define PPC_HIGHER(v) (((v) >> 32) & 0xffff)
72
73 /* #highera(value) denotes bits 32 through 47 of the indicated value,
74 compensating for #lo() being treated as a signed number. */
75 #define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000)
76
77 /* #highest(value) denotes bits 48 through 63 of the indicated value. */
78 #define PPC_HIGHEST(v) (((v) >> 48) & 0xffff)
79
80 /* #highesta(value) denotes bits 48 through 63 of the indicated value,
81 compensating for #lo being treated as a signed number. */
82 #define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000)
83
84 #define SEX16(val) ((((val) & 0xffff) ^ 0x8000) - 0x8000)
85
86 static boolean reg_names_p = TARGET_REG_NAMES_P;
87
88 static boolean register_name PARAMS ((expressionS *));
89 static void ppc_set_cpu PARAMS ((void));
90 static unsigned long ppc_insert_operand
91 PARAMS ((unsigned long insn, const struct powerpc_operand *operand,
92 offsetT val, char *file, unsigned int line));
93 static void ppc_macro PARAMS ((char *str, const struct powerpc_macro *macro));
94 static void ppc_byte PARAMS ((int));
95
96 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
97 static int ppc_is_toc_sym PARAMS ((symbolS *sym));
98 static void ppc_tc PARAMS ((int));
99 static void ppc_machine PARAMS ((int));
100 #endif
101
102 #ifdef OBJ_XCOFF
103 static void ppc_comm PARAMS ((int));
104 static void ppc_bb PARAMS ((int));
105 static void ppc_bc PARAMS ((int));
106 static void ppc_bf PARAMS ((int));
107 static void ppc_biei PARAMS ((int));
108 static void ppc_bs PARAMS ((int));
109 static void ppc_eb PARAMS ((int));
110 static void ppc_ec PARAMS ((int));
111 static void ppc_ef PARAMS ((int));
112 static void ppc_es PARAMS ((int));
113 static void ppc_csect PARAMS ((int));
114 static void ppc_change_csect PARAMS ((symbolS *));
115 static void ppc_function PARAMS ((int));
116 static void ppc_extern PARAMS ((int));
117 static void ppc_lglobl PARAMS ((int));
118 static void ppc_section PARAMS ((int));
119 static void ppc_named_section PARAMS ((int));
120 static void ppc_stabx PARAMS ((int));
121 static void ppc_rename PARAMS ((int));
122 static void ppc_toc PARAMS ((int));
123 static void ppc_xcoff_cons PARAMS ((int));
124 static void ppc_vbyte PARAMS ((int));
125 #endif
126
127 #ifdef OBJ_ELF
128 static bfd_reloc_code_real_type ppc_elf_suffix PARAMS ((char **, expressionS *));
129 static void ppc_elf_cons PARAMS ((int));
130 static void ppc_elf_rdata PARAMS ((int));
131 static void ppc_elf_lcomm PARAMS ((int));
132 static void ppc_elf_validate_fix PARAMS ((fixS *, segT));
133 #endif
134
135 #ifdef TE_PE
136 static void ppc_set_current_section PARAMS ((segT));
137 static void ppc_previous PARAMS ((int));
138 static void ppc_pdata PARAMS ((int));
139 static void ppc_ydata PARAMS ((int));
140 static void ppc_reldata PARAMS ((int));
141 static void ppc_rdata PARAMS ((int));
142 static void ppc_ualong PARAMS ((int));
143 static void ppc_znop PARAMS ((int));
144 static void ppc_pe_comm PARAMS ((int));
145 static void ppc_pe_section PARAMS ((int));
146 static void ppc_pe_function PARAMS ((int));
147 static void ppc_pe_tocd PARAMS ((int));
148 #endif
149 \f
150 /* Generic assembler global variables which must be defined by all
151 targets. */
152
153 #ifdef OBJ_ELF
154 /* This string holds the chars that always start a comment. If the
155 pre-processor is disabled, these aren't very useful. The macro
156 tc_comment_chars points to this. We use this, rather than the
157 usual comment_chars, so that we can switch for Solaris conventions. */
158 static const char ppc_solaris_comment_chars[] = "#!";
159 static const char ppc_eabi_comment_chars[] = "#";
160
161 #ifdef TARGET_SOLARIS_COMMENT
162 const char *ppc_comment_chars = ppc_solaris_comment_chars;
163 #else
164 const char *ppc_comment_chars = ppc_eabi_comment_chars;
165 #endif
166 #else
167 const char comment_chars[] = "#";
168 #endif
169
170 /* Characters which start a comment at the beginning of a line. */
171 const char line_comment_chars[] = "#";
172
173 /* Characters which may be used to separate multiple commands on a
174 single line. */
175 const char line_separator_chars[] = ";";
176
177 /* Characters which are used to indicate an exponent in a floating
178 point number. */
179 const char EXP_CHARS[] = "eE";
180
181 /* Characters which mean that a number is a floating point constant,
182 as in 0d1.0. */
183 const char FLT_CHARS[] = "dD";
184 \f
185 /* The target specific pseudo-ops which we support. */
186
187 const pseudo_typeS md_pseudo_table[] =
188 {
189 /* Pseudo-ops which must be overridden. */
190 { "byte", ppc_byte, 0 },
191
192 #ifdef OBJ_XCOFF
193 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
194 legitimately belong in the obj-*.c file. However, XCOFF is based
195 on COFF, and is only implemented for the RS/6000. We just use
196 obj-coff.c, and add what we need here. */
197 { "comm", ppc_comm, 0 },
198 { "lcomm", ppc_comm, 1 },
199 { "bb", ppc_bb, 0 },
200 { "bc", ppc_bc, 0 },
201 { "bf", ppc_bf, 0 },
202 { "bi", ppc_biei, 0 },
203 { "bs", ppc_bs, 0 },
204 { "csect", ppc_csect, 0 },
205 { "data", ppc_section, 'd' },
206 { "eb", ppc_eb, 0 },
207 { "ec", ppc_ec, 0 },
208 { "ef", ppc_ef, 0 },
209 { "ei", ppc_biei, 1 },
210 { "es", ppc_es, 0 },
211 { "extern", ppc_extern, 0 },
212 { "function", ppc_function, 0 },
213 { "lglobl", ppc_lglobl, 0 },
214 { "rename", ppc_rename, 0 },
215 { "section", ppc_named_section, 0 },
216 { "stabx", ppc_stabx, 0 },
217 { "text", ppc_section, 't' },
218 { "toc", ppc_toc, 0 },
219 { "long", ppc_xcoff_cons, 2 },
220 { "llong", ppc_xcoff_cons, 3 },
221 { "word", ppc_xcoff_cons, 1 },
222 { "short", ppc_xcoff_cons, 1 },
223 { "vbyte", ppc_vbyte, 0 },
224 #endif
225
226 #ifdef OBJ_ELF
227 { "llong", ppc_elf_cons, 8 },
228 { "quad", ppc_elf_cons, 8 },
229 { "long", ppc_elf_cons, 4 },
230 { "word", ppc_elf_cons, 2 },
231 { "short", ppc_elf_cons, 2 },
232 { "rdata", ppc_elf_rdata, 0 },
233 { "rodata", ppc_elf_rdata, 0 },
234 { "lcomm", ppc_elf_lcomm, 0 },
235 { "file", dwarf2_directive_file, 0 },
236 { "loc", dwarf2_directive_loc, 0 },
237 #endif
238
239 #ifdef TE_PE
240 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
241 { "previous", ppc_previous, 0 },
242 { "pdata", ppc_pdata, 0 },
243 { "ydata", ppc_ydata, 0 },
244 { "reldata", ppc_reldata, 0 },
245 { "rdata", ppc_rdata, 0 },
246 { "ualong", ppc_ualong, 0 },
247 { "znop", ppc_znop, 0 },
248 { "comm", ppc_pe_comm, 0 },
249 { "lcomm", ppc_pe_comm, 1 },
250 { "section", ppc_pe_section, 0 },
251 { "function", ppc_pe_function,0 },
252 { "tocd", ppc_pe_tocd, 0 },
253 #endif
254
255 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
256 { "tc", ppc_tc, 0 },
257 { "machine", ppc_machine, 0 },
258 #endif
259
260 { NULL, NULL, 0 }
261 };
262
263 \f
264 /* Predefined register names if -mregnames (or default for Windows NT).
265 In general, there are lots of them, in an attempt to be compatible
266 with a number of other Windows NT assemblers. */
267
268 /* Structure to hold information about predefined registers. */
269 struct pd_reg
270 {
271 char *name;
272 int value;
273 };
274
275 /* List of registers that are pre-defined:
276
277 Each general register has predefined names of the form:
278 1. r<reg_num> which has the value <reg_num>.
279 2. r.<reg_num> which has the value <reg_num>.
280
281 Each floating point register has predefined names of the form:
282 1. f<reg_num> which has the value <reg_num>.
283 2. f.<reg_num> which has the value <reg_num>.
284
285 Each vector unit register has predefined names of the form:
286 1. v<reg_num> which has the value <reg_num>.
287 2. v.<reg_num> which has the value <reg_num>.
288
289 Each condition register has predefined names of the form:
290 1. cr<reg_num> which has the value <reg_num>.
291 2. cr.<reg_num> which has the value <reg_num>.
292
293 There are individual registers as well:
294 sp or r.sp has the value 1
295 rtoc or r.toc has the value 2
296 fpscr has the value 0
297 xer has the value 1
298 lr has the value 8
299 ctr has the value 9
300 pmr has the value 0
301 dar has the value 19
302 dsisr has the value 18
303 dec has the value 22
304 sdr1 has the value 25
305 srr0 has the value 26
306 srr1 has the value 27
307
308 The table is sorted. Suitable for searching by a binary search. */
309
310 static const struct pd_reg pre_defined_registers[] =
311 {
312 { "cr.0", 0 }, /* Condition Registers */
313 { "cr.1", 1 },
314 { "cr.2", 2 },
315 { "cr.3", 3 },
316 { "cr.4", 4 },
317 { "cr.5", 5 },
318 { "cr.6", 6 },
319 { "cr.7", 7 },
320
321 { "cr0", 0 },
322 { "cr1", 1 },
323 { "cr2", 2 },
324 { "cr3", 3 },
325 { "cr4", 4 },
326 { "cr5", 5 },
327 { "cr6", 6 },
328 { "cr7", 7 },
329
330 { "ctr", 9 },
331
332 { "dar", 19 }, /* Data Access Register */
333 { "dec", 22 }, /* Decrementer */
334 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
335
336 { "f.0", 0 }, /* Floating point registers */
337 { "f.1", 1 },
338 { "f.10", 10 },
339 { "f.11", 11 },
340 { "f.12", 12 },
341 { "f.13", 13 },
342 { "f.14", 14 },
343 { "f.15", 15 },
344 { "f.16", 16 },
345 { "f.17", 17 },
346 { "f.18", 18 },
347 { "f.19", 19 },
348 { "f.2", 2 },
349 { "f.20", 20 },
350 { "f.21", 21 },
351 { "f.22", 22 },
352 { "f.23", 23 },
353 { "f.24", 24 },
354 { "f.25", 25 },
355 { "f.26", 26 },
356 { "f.27", 27 },
357 { "f.28", 28 },
358 { "f.29", 29 },
359 { "f.3", 3 },
360 { "f.30", 30 },
361 { "f.31", 31 },
362 { "f.4", 4 },
363 { "f.5", 5 },
364 { "f.6", 6 },
365 { "f.7", 7 },
366 { "f.8", 8 },
367 { "f.9", 9 },
368
369 { "f0", 0 },
370 { "f1", 1 },
371 { "f10", 10 },
372 { "f11", 11 },
373 { "f12", 12 },
374 { "f13", 13 },
375 { "f14", 14 },
376 { "f15", 15 },
377 { "f16", 16 },
378 { "f17", 17 },
379 { "f18", 18 },
380 { "f19", 19 },
381 { "f2", 2 },
382 { "f20", 20 },
383 { "f21", 21 },
384 { "f22", 22 },
385 { "f23", 23 },
386 { "f24", 24 },
387 { "f25", 25 },
388 { "f26", 26 },
389 { "f27", 27 },
390 { "f28", 28 },
391 { "f29", 29 },
392 { "f3", 3 },
393 { "f30", 30 },
394 { "f31", 31 },
395 { "f4", 4 },
396 { "f5", 5 },
397 { "f6", 6 },
398 { "f7", 7 },
399 { "f8", 8 },
400 { "f9", 9 },
401
402 { "fpscr", 0 },
403
404 { "lr", 8 }, /* Link Register */
405
406 { "pmr", 0 },
407
408 { "r.0", 0 }, /* General Purpose Registers */
409 { "r.1", 1 },
410 { "r.10", 10 },
411 { "r.11", 11 },
412 { "r.12", 12 },
413 { "r.13", 13 },
414 { "r.14", 14 },
415 { "r.15", 15 },
416 { "r.16", 16 },
417 { "r.17", 17 },
418 { "r.18", 18 },
419 { "r.19", 19 },
420 { "r.2", 2 },
421 { "r.20", 20 },
422 { "r.21", 21 },
423 { "r.22", 22 },
424 { "r.23", 23 },
425 { "r.24", 24 },
426 { "r.25", 25 },
427 { "r.26", 26 },
428 { "r.27", 27 },
429 { "r.28", 28 },
430 { "r.29", 29 },
431 { "r.3", 3 },
432 { "r.30", 30 },
433 { "r.31", 31 },
434 { "r.4", 4 },
435 { "r.5", 5 },
436 { "r.6", 6 },
437 { "r.7", 7 },
438 { "r.8", 8 },
439 { "r.9", 9 },
440
441 { "r.sp", 1 }, /* Stack Pointer */
442
443 { "r.toc", 2 }, /* Pointer to the table of contents */
444
445 { "r0", 0 }, /* More general purpose registers */
446 { "r1", 1 },
447 { "r10", 10 },
448 { "r11", 11 },
449 { "r12", 12 },
450 { "r13", 13 },
451 { "r14", 14 },
452 { "r15", 15 },
453 { "r16", 16 },
454 { "r17", 17 },
455 { "r18", 18 },
456 { "r19", 19 },
457 { "r2", 2 },
458 { "r20", 20 },
459 { "r21", 21 },
460 { "r22", 22 },
461 { "r23", 23 },
462 { "r24", 24 },
463 { "r25", 25 },
464 { "r26", 26 },
465 { "r27", 27 },
466 { "r28", 28 },
467 { "r29", 29 },
468 { "r3", 3 },
469 { "r30", 30 },
470 { "r31", 31 },
471 { "r4", 4 },
472 { "r5", 5 },
473 { "r6", 6 },
474 { "r7", 7 },
475 { "r8", 8 },
476 { "r9", 9 },
477
478 { "rtoc", 2 }, /* Table of contents */
479
480 { "sdr1", 25 }, /* Storage Description Register 1 */
481
482 { "sp", 1 },
483
484 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
485 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
486
487 { "v.0", 0 }, /* Vector registers */
488 { "v.1", 1 },
489 { "v.10", 10 },
490 { "v.11", 11 },
491 { "v.12", 12 },
492 { "v.13", 13 },
493 { "v.14", 14 },
494 { "v.15", 15 },
495 { "v.16", 16 },
496 { "v.17", 17 },
497 { "v.18", 18 },
498 { "v.19", 19 },
499 { "v.2", 2 },
500 { "v.20", 20 },
501 { "v.21", 21 },
502 { "v.22", 22 },
503 { "v.23", 23 },
504 { "v.24", 24 },
505 { "v.25", 25 },
506 { "v.26", 26 },
507 { "v.27", 27 },
508 { "v.28", 28 },
509 { "v.29", 29 },
510 { "v.3", 3 },
511 { "v.30", 30 },
512 { "v.31", 31 },
513 { "v.4", 4 },
514 { "v.5", 5 },
515 { "v.6", 6 },
516 { "v.7", 7 },
517 { "v.8", 8 },
518 { "v.9", 9 },
519
520 { "v0", 0 },
521 { "v1", 1 },
522 { "v10", 10 },
523 { "v11", 11 },
524 { "v12", 12 },
525 { "v13", 13 },
526 { "v14", 14 },
527 { "v15", 15 },
528 { "v16", 16 },
529 { "v17", 17 },
530 { "v18", 18 },
531 { "v19", 19 },
532 { "v2", 2 },
533 { "v20", 20 },
534 { "v21", 21 },
535 { "v22", 22 },
536 { "v23", 23 },
537 { "v24", 24 },
538 { "v25", 25 },
539 { "v26", 26 },
540 { "v27", 27 },
541 { "v28", 28 },
542 { "v29", 29 },
543 { "v3", 3 },
544 { "v30", 30 },
545 { "v31", 31 },
546 { "v4", 4 },
547 { "v5", 5 },
548 { "v6", 6 },
549 { "v7", 7 },
550 { "v8", 8 },
551 { "v9", 9 },
552
553 { "xer", 1 },
554
555 };
556
557 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
558
559 /* Given NAME, find the register number associated with that name, return
560 the integer value associated with the given name or -1 on failure. */
561
562 static int reg_name_search
563 PARAMS ((const struct pd_reg *, int, const char * name));
564
565 static int
566 reg_name_search (regs, regcount, name)
567 const struct pd_reg *regs;
568 int regcount;
569 const char *name;
570 {
571 int middle, low, high;
572 int cmp;
573
574 low = 0;
575 high = regcount - 1;
576
577 do
578 {
579 middle = (low + high) / 2;
580 cmp = strcasecmp (name, regs[middle].name);
581 if (cmp < 0)
582 high = middle - 1;
583 else if (cmp > 0)
584 low = middle + 1;
585 else
586 return regs[middle].value;
587 }
588 while (low <= high);
589
590 return -1;
591 }
592
593 /*
594 * Summary of register_name.
595 *
596 * in: Input_line_pointer points to 1st char of operand.
597 *
598 * out: A expressionS.
599 * The operand may have been a register: in this case, X_op == O_register,
600 * X_add_number is set to the register number, and truth is returned.
601 * Input_line_pointer->(next non-blank) char after operand, or is in its
602 * original state.
603 */
604
605 static boolean
606 register_name (expressionP)
607 expressionS *expressionP;
608 {
609 int reg_number;
610 char *name;
611 char *start;
612 char c;
613
614 /* Find the spelling of the operand. */
615 start = name = input_line_pointer;
616 if (name[0] == '%' && ISALPHA (name[1]))
617 name = ++input_line_pointer;
618
619 else if (!reg_names_p || !ISALPHA (name[0]))
620 return false;
621
622 c = get_symbol_end ();
623 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
624
625 /* Put back the delimiting char. */
626 *input_line_pointer = c;
627
628 /* Look to see if it's in the register table. */
629 if (reg_number >= 0)
630 {
631 expressionP->X_op = O_register;
632 expressionP->X_add_number = reg_number;
633
634 /* Make the rest nice. */
635 expressionP->X_add_symbol = NULL;
636 expressionP->X_op_symbol = NULL;
637 return true;
638 }
639
640 /* Reset the line as if we had not done anything. */
641 input_line_pointer = start;
642 return false;
643 }
644 \f
645 /* This function is called for each symbol seen in an expression. It
646 handles the special parsing which PowerPC assemblers are supposed
647 to use for condition codes. */
648
649 /* Whether to do the special parsing. */
650 static boolean cr_operand;
651
652 /* Names to recognize in a condition code. This table is sorted. */
653 static const struct pd_reg cr_names[] =
654 {
655 { "cr0", 0 },
656 { "cr1", 1 },
657 { "cr2", 2 },
658 { "cr3", 3 },
659 { "cr4", 4 },
660 { "cr5", 5 },
661 { "cr6", 6 },
662 { "cr7", 7 },
663 { "eq", 2 },
664 { "gt", 1 },
665 { "lt", 0 },
666 { "so", 3 },
667 { "un", 3 }
668 };
669
670 /* Parsing function. This returns non-zero if it recognized an
671 expression. */
672
673 int
674 ppc_parse_name (name, expr)
675 const char *name;
676 expressionS *expr;
677 {
678 int val;
679
680 if (! cr_operand)
681 return 0;
682
683 val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0],
684 name);
685 if (val < 0)
686 return 0;
687
688 expr->X_op = O_constant;
689 expr->X_add_number = val;
690
691 return 1;
692 }
693 \f
694 /* Local variables. */
695
696 /* The type of processor we are assembling for. This is one or more
697 of the PPC_OPCODE flags defined in opcode/ppc.h. */
698 static int ppc_cpu = 0;
699
700 /* The size of the processor we are assembling for. This is either
701 PPC_OPCODE_32 or PPC_OPCODE_64. */
702 static unsigned long ppc_size = (BFD_DEFAULT_TARGET_SIZE == 64
703 ? PPC_OPCODE_64
704 : PPC_OPCODE_32);
705
706 /* Whether to target xcoff64. */
707 static int ppc_xcoff64 = 0;
708
709 /* Opcode hash table. */
710 static struct hash_control *ppc_hash;
711
712 /* Macro hash table. */
713 static struct hash_control *ppc_macro_hash;
714
715 #ifdef OBJ_ELF
716 /* What type of shared library support to use. */
717 static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE;
718
719 /* Flags to set in the elf header. */
720 static flagword ppc_flags = 0;
721
722 /* Whether this is Solaris or not. */
723 #ifdef TARGET_SOLARIS_COMMENT
724 #define SOLARIS_P true
725 #else
726 #define SOLARIS_P false
727 #endif
728
729 static boolean msolaris = SOLARIS_P;
730 #endif
731
732 #ifdef OBJ_XCOFF
733
734 /* The RS/6000 assembler uses the .csect pseudo-op to generate code
735 using a bunch of different sections. These assembler sections,
736 however, are all encompassed within the .text or .data sections of
737 the final output file. We handle this by using different
738 subsegments within these main segments. */
739
740 /* Next subsegment to allocate within the .text segment. */
741 static subsegT ppc_text_subsegment = 2;
742
743 /* Linked list of csects in the text section. */
744 static symbolS *ppc_text_csects;
745
746 /* Next subsegment to allocate within the .data segment. */
747 static subsegT ppc_data_subsegment = 2;
748
749 /* Linked list of csects in the data section. */
750 static symbolS *ppc_data_csects;
751
752 /* The current csect. */
753 static symbolS *ppc_current_csect;
754
755 /* The RS/6000 assembler uses a TOC which holds addresses of functions
756 and variables. Symbols are put in the TOC with the .tc pseudo-op.
757 A special relocation is used when accessing TOC entries. We handle
758 the TOC as a subsegment within the .data segment. We set it up if
759 we see a .toc pseudo-op, and save the csect symbol here. */
760 static symbolS *ppc_toc_csect;
761
762 /* The first frag in the TOC subsegment. */
763 static fragS *ppc_toc_frag;
764
765 /* The first frag in the first subsegment after the TOC in the .data
766 segment. NULL if there are no subsegments after the TOC. */
767 static fragS *ppc_after_toc_frag;
768
769 /* The current static block. */
770 static symbolS *ppc_current_block;
771
772 /* The COFF debugging section; set by md_begin. This is not the
773 .debug section, but is instead the secret BFD section which will
774 cause BFD to set the section number of a symbol to N_DEBUG. */
775 static asection *ppc_coff_debug_section;
776
777 #endif /* OBJ_XCOFF */
778
779 #ifdef TE_PE
780
781 /* Various sections that we need for PE coff support. */
782 static segT ydata_section;
783 static segT pdata_section;
784 static segT reldata_section;
785 static segT rdata_section;
786 static segT tocdata_section;
787
788 /* The current section and the previous section. See ppc_previous. */
789 static segT ppc_previous_section;
790 static segT ppc_current_section;
791
792 #endif /* TE_PE */
793
794 #ifdef OBJ_ELF
795 symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
796 #endif /* OBJ_ELF */
797 \f
798 #ifdef OBJ_ELF
799 const char *const md_shortopts = "b:l:usm:K:VQ:";
800 #else
801 const char *const md_shortopts = "um:";
802 #endif
803 const struct option md_longopts[] = {
804 {NULL, no_argument, NULL, 0}
805 };
806 const size_t md_longopts_size = sizeof (md_longopts);
807
808 int
809 md_parse_option (c, arg)
810 int c;
811 char *arg;
812 {
813 switch (c)
814 {
815 case 'u':
816 /* -u means that any undefined symbols should be treated as
817 external, which is the default for gas anyhow. */
818 break;
819
820 #ifdef OBJ_ELF
821 case 'l':
822 /* Solaris as takes -le (presumably for little endian). For completeness
823 sake, recognize -be also. */
824 if (strcmp (arg, "e") == 0)
825 {
826 target_big_endian = 0;
827 set_target_endian = 1;
828 }
829 else
830 return 0;
831
832 break;
833
834 case 'b':
835 if (strcmp (arg, "e") == 0)
836 {
837 target_big_endian = 1;
838 set_target_endian = 1;
839 }
840 else
841 return 0;
842
843 break;
844
845 case 'K':
846 /* Recognize -K PIC. */
847 if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
848 {
849 shlib = SHLIB_PIC;
850 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
851 }
852 else
853 return 0;
854
855 break;
856 #endif
857
858 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
859 case 'a':
860 if (strcmp (arg, "64") == 0)
861 ppc_xcoff64 = 1;
862 else if (strcmp (arg, "32") == 0)
863 ppc_xcoff64 = 0;
864 else
865 return 0;
866 break;
867
868 case 'm':
869 /* Most CPU's are 32 bit. Exceptions are listed below. */
870 ppc_size = PPC_OPCODE_32;
871
872 /* -mpwrx and -mpwr2 mean to assemble for the IBM POWER/2
873 (RIOS2). */
874 if (strcmp (arg, "pwrx") == 0 || strcmp (arg, "pwr2") == 0)
875 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_POWER2;
876 /* -mpwr means to assemble for the IBM POWER (RIOS1). */
877 else if (strcmp (arg, "pwr") == 0)
878 ppc_cpu = PPC_OPCODE_POWER;
879 /* -m601 means to assemble for the PowerPC 601, which includes
880 instructions that are holdovers from the Power. */
881 else if (strcmp (arg, "601") == 0)
882 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_601;
883 /* -mppc, -mppc32, -m603, and -m604 mean to assemble for the
884 PowerPC 603/604. */
885 else if (strcmp (arg, "ppc") == 0
886 || strcmp (arg, "ppc32") == 0
887 || strcmp (arg, "603") == 0
888 || strcmp (arg, "604") == 0)
889 ppc_cpu = PPC_OPCODE_PPC;
890 /* -m403 and -m405 mean to assemble for the PowerPC 403/405. */
891 else if (strcmp (arg, "403") == 0
892 || strcmp (arg, "405") == 0)
893 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_403;
894 else if (strcmp (arg, "7400") == 0
895 || strcmp (arg, "7410") == 0
896 || strcmp (arg, "7450") == 0
897 || strcmp (arg, "7455") == 0)
898 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC;
899 else if (strcmp (arg, "altivec") == 0)
900 {
901 if (ppc_cpu == 0)
902 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC;
903 else
904 ppc_cpu |= PPC_OPCODE_ALTIVEC;
905 }
906 /* -mppc64 and -m620 mean to assemble for the 64-bit PowerPC
907 620. */
908 else if (strcmp (arg, "ppc64") == 0 || strcmp (arg, "620") == 0)
909 {
910 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_64;
911 ppc_size = PPC_OPCODE_64;
912 }
913 else if (strcmp (arg, "ppc64bridge") == 0)
914 {
915 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_64_BRIDGE | PPC_OPCODE_64;
916 ppc_size = PPC_OPCODE_64;
917 }
918 /* -mbooke/-mbooke32 mean enable 32-bit BookE support. */
919 else if (strcmp (arg, "booke") == 0 || strcmp (arg, "booke32") == 0)
920 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_BOOKE;
921 /* -mbooke64 means enable 64-bit BookE support. */
922 else if (strcmp (arg, "booke64") == 0)
923 {
924 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_BOOKE |
925 PPC_OPCODE_BOOKE64 | PPC_OPCODE_64;
926 ppc_size = PPC_OPCODE_64;
927 }
928 else if (strcmp (arg, "power4") == 0)
929 {
930 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_64 | PPC_OPCODE_POWER4;
931 ppc_size = PPC_OPCODE_64;
932 }
933 /* -mcom means assemble for the common intersection between Power
934 and PowerPC. At present, we just allow the union, rather
935 than the intersection. */
936 else if (strcmp (arg, "com") == 0)
937 ppc_cpu = PPC_OPCODE_COMMON;
938 /* -many means to assemble for any architecture (PWR/PWRX/PPC). */
939 else if (strcmp (arg, "any") == 0)
940 ppc_cpu = PPC_OPCODE_ANY;
941
942 else if (strcmp (arg, "regnames") == 0)
943 reg_names_p = true;
944
945 else if (strcmp (arg, "no-regnames") == 0)
946 reg_names_p = false;
947
948 #ifdef OBJ_ELF
949 /* -mrelocatable/-mrelocatable-lib -- warn about initializations
950 that require relocation. */
951 else if (strcmp (arg, "relocatable") == 0)
952 {
953 shlib = SHLIB_MRELOCATABLE;
954 ppc_flags |= EF_PPC_RELOCATABLE;
955 }
956
957 else if (strcmp (arg, "relocatable-lib") == 0)
958 {
959 shlib = SHLIB_MRELOCATABLE;
960 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
961 }
962
963 /* -memb, set embedded bit. */
964 else if (strcmp (arg, "emb") == 0)
965 ppc_flags |= EF_PPC_EMB;
966
967 /* -mlittle/-mbig set the endianess. */
968 else if (strcmp (arg, "little") == 0
969 || strcmp (arg, "little-endian") == 0)
970 {
971 target_big_endian = 0;
972 set_target_endian = 1;
973 }
974
975 else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
976 {
977 target_big_endian = 1;
978 set_target_endian = 1;
979 }
980
981 else if (strcmp (arg, "solaris") == 0)
982 {
983 msolaris = true;
984 ppc_comment_chars = ppc_solaris_comment_chars;
985 }
986
987 else if (strcmp (arg, "no-solaris") == 0)
988 {
989 msolaris = false;
990 ppc_comment_chars = ppc_eabi_comment_chars;
991 }
992 #endif
993 else
994 {
995 as_bad (_("invalid switch -m%s"), arg);
996 return 0;
997 }
998 break;
999
1000 #ifdef OBJ_ELF
1001 /* -V: SVR4 argument to print version ID. */
1002 case 'V':
1003 print_version_id ();
1004 break;
1005
1006 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
1007 should be emitted or not. FIXME: Not implemented. */
1008 case 'Q':
1009 break;
1010
1011 /* Solaris takes -s to specify that .stabs go in a .stabs section,
1012 rather than .stabs.excl, which is ignored by the linker.
1013 FIXME: Not implemented. */
1014 case 's':
1015 if (arg)
1016 return 0;
1017
1018 break;
1019 #endif
1020
1021 default:
1022 return 0;
1023 }
1024
1025 return 1;
1026 }
1027
1028 void
1029 md_show_usage (stream)
1030 FILE *stream;
1031 {
1032 fprintf (stream, _("\
1033 PowerPC options:\n\
1034 -u ignored\n\
1035 -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\
1036 -mpwr generate code for POWER (RIOS1)\n\
1037 -m601 generate code for PowerPC 601\n\
1038 -mppc, -mppc32, -m603, -m604\n\
1039 generate code for PowerPC 603/604\n\
1040 -m403, -m405 generate code for PowerPC 403/405\n\
1041 -m7400, -m7410, -m7450, -m7455\n\
1042 generate code For PowerPC 7400/7410/7450/7455\n\
1043 -mppc64, -m620 generate code for PowerPC 620/625/630\n\
1044 -mppc64bridge generate code for PowerPC 64, including bridge insns\n\
1045 -mbooke64 generate code for 64-bit PowerPC BookE\n\
1046 -mbooke, mbooke32 generate code for 32-bit PowerPC BookE\n\
1047 -mpower4 generate code for Power4 architecture\n\
1048 -maltivec generate code for AltiVec\n\
1049 -mcom generate code Power/PowerPC common instructions\n\
1050 -many generate code for any architecture (PWR/PWRX/PPC)\n\
1051 -mregnames Allow symbolic names for registers\n\
1052 -mno-regnames Do not allow symbolic names for registers\n"));
1053 #ifdef OBJ_ELF
1054 fprintf (stream, _("\
1055 -mrelocatable support for GCC's -mrelocatble option\n\
1056 -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
1057 -memb set PPC_EMB bit in ELF flags\n\
1058 -mlittle, -mlittle-endian\n\
1059 generate code for a little endian machine\n\
1060 -mbig, -mbig-endian generate code for a big endian machine\n\
1061 -msolaris generate code for Solaris\n\
1062 -mno-solaris do not generate code for Solaris\n\
1063 -V print assembler version number\n\
1064 -Qy, -Qn ignored\n"));
1065 #endif
1066 }
1067 \f
1068 /* Set ppc_cpu if it is not already set. */
1069
1070 static void
1071 ppc_set_cpu ()
1072 {
1073 const char *default_os = TARGET_OS;
1074 const char *default_cpu = TARGET_CPU;
1075
1076 if (ppc_cpu == 0)
1077 {
1078 if (strncmp (default_os, "aix", 3) == 0
1079 && default_os[3] >= '4' && default_os[3] <= '9')
1080 ppc_cpu = PPC_OPCODE_COMMON;
1081 else if (strncmp (default_os, "aix3", 4) == 0)
1082 ppc_cpu = PPC_OPCODE_POWER;
1083 else if (strcmp (default_cpu, "rs6000") == 0)
1084 ppc_cpu = PPC_OPCODE_POWER;
1085 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1086 ppc_cpu = PPC_OPCODE_PPC;
1087 else
1088 as_fatal (_("Unknown default cpu = %s, os = %s"),
1089 default_cpu, default_os);
1090 }
1091 }
1092
1093 /* Figure out the BFD architecture to use. */
1094
1095 enum bfd_architecture
1096 ppc_arch ()
1097 {
1098 const char *default_cpu = TARGET_CPU;
1099 ppc_set_cpu ();
1100
1101 if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
1102 return bfd_arch_powerpc;
1103 else if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
1104 return bfd_arch_rs6000;
1105 else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
1106 {
1107 if (strcmp (default_cpu, "rs6000") == 0)
1108 return bfd_arch_rs6000;
1109 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1110 return bfd_arch_powerpc;
1111 }
1112
1113 as_fatal (_("Neither Power nor PowerPC opcodes were selected."));
1114 return bfd_arch_unknown;
1115 }
1116
1117 unsigned long
1118 ppc_mach ()
1119 {
1120 return ppc_size == PPC_OPCODE_64 ? 620 : 0;
1121 }
1122
1123 #ifdef OBJ_XCOFF
1124 int
1125 ppc_subseg_align ()
1126 {
1127 return ppc_xcoff64 ? 3 : 2;
1128 }
1129 #endif
1130
1131 extern char*
1132 ppc_target_format ()
1133 {
1134 #ifdef OBJ_COFF
1135 #ifdef TE_PE
1136 return target_big_endian ? "pe-powerpc" : "pe-powerpcle";
1137 #elif TE_POWERMAC
1138 return "xcoff-powermac";
1139 #else
1140 return ppc_xcoff64 ? "aixcoff64-rs6000" : "aixcoff-rs6000";
1141 #endif
1142 #endif
1143 #ifdef OBJ_ELF
1144 boolean is64 = BFD_DEFAULT_TARGET_SIZE == 64 && ppc_size == PPC_OPCODE_64;
1145
1146 return (target_big_endian
1147 ? (is64 ? "elf64-powerpc" : "elf32-powerpc")
1148 : (is64 ? "elf64-powerpcle" : "elf32-powerpcle"));
1149 #endif
1150 }
1151
1152 /* This function is called when the assembler starts up. It is called
1153 after the options have been parsed and the output file has been
1154 opened. */
1155
1156 void
1157 md_begin ()
1158 {
1159 register const struct powerpc_opcode *op;
1160 const struct powerpc_opcode *op_end;
1161 const struct powerpc_macro *macro;
1162 const struct powerpc_macro *macro_end;
1163 boolean dup_insn = false;
1164
1165 ppc_set_cpu ();
1166
1167 #ifdef OBJ_ELF
1168 /* Set the ELF flags if desired. */
1169 if (ppc_flags && !msolaris)
1170 bfd_set_private_flags (stdoutput, ppc_flags);
1171 #endif
1172
1173 /* Insert the opcodes into a hash table. */
1174 ppc_hash = hash_new ();
1175
1176 op_end = powerpc_opcodes + powerpc_num_opcodes;
1177 for (op = powerpc_opcodes; op < op_end; op++)
1178 {
1179 know ((op->opcode & op->mask) == op->opcode);
1180
1181 if ((op->flags & ppc_cpu) != 0
1182 && ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0
1183 || (op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == ppc_size
1184 || (ppc_cpu & PPC_OPCODE_64_BRIDGE) != 0)
1185 && ((op->flags & (PPC_OPCODE_POWER4 | PPC_OPCODE_NOPOWER4)) == 0
1186 || ((op->flags & PPC_OPCODE_POWER4)
1187 == (ppc_cpu & PPC_OPCODE_POWER4))))
1188 {
1189 const char *retval;
1190
1191 retval = hash_insert (ppc_hash, op->name, (PTR) op);
1192 if (retval != (const char *) NULL)
1193 {
1194 /* Ignore Power duplicates for -m601. */
1195 if ((ppc_cpu & PPC_OPCODE_601) != 0
1196 && (op->flags & PPC_OPCODE_POWER) != 0)
1197 continue;
1198
1199 as_bad (_("Internal assembler error for instruction %s"),
1200 op->name);
1201 dup_insn = true;
1202 }
1203 }
1204 }
1205
1206 /* Insert the macros into a hash table. */
1207 ppc_macro_hash = hash_new ();
1208
1209 macro_end = powerpc_macros + powerpc_num_macros;
1210 for (macro = powerpc_macros; macro < macro_end; macro++)
1211 {
1212 if ((macro->flags & ppc_cpu) != 0)
1213 {
1214 const char *retval;
1215
1216 retval = hash_insert (ppc_macro_hash, macro->name, (PTR) macro);
1217 if (retval != (const char *) NULL)
1218 {
1219 as_bad (_("Internal assembler error for macro %s"), macro->name);
1220 dup_insn = true;
1221 }
1222 }
1223 }
1224
1225 if (dup_insn)
1226 abort ();
1227
1228 /* Tell the main code what the endianness is if it is not overidden
1229 by the user. */
1230 if (!set_target_endian)
1231 {
1232 set_target_endian = 1;
1233 target_big_endian = PPC_BIG_ENDIAN;
1234 }
1235
1236 #ifdef OBJ_XCOFF
1237 ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
1238
1239 /* Create dummy symbols to serve as initial csects. This forces the
1240 text csects to precede the data csects. These symbols will not
1241 be output. */
1242 ppc_text_csects = symbol_make ("dummy\001");
1243 symbol_get_tc (ppc_text_csects)->within = ppc_text_csects;
1244 ppc_data_csects = symbol_make ("dummy\001");
1245 symbol_get_tc (ppc_data_csects)->within = ppc_data_csects;
1246 #endif
1247
1248 #ifdef TE_PE
1249
1250 ppc_current_section = text_section;
1251 ppc_previous_section = 0;
1252
1253 #endif
1254 }
1255
1256 /* Insert an operand value into an instruction. */
1257
1258 static unsigned long
1259 ppc_insert_operand (insn, operand, val, file, line)
1260 unsigned long insn;
1261 const struct powerpc_operand *operand;
1262 offsetT val;
1263 char *file;
1264 unsigned int line;
1265 {
1266 if (operand->bits != 32)
1267 {
1268 long min, max;
1269 offsetT test;
1270
1271 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
1272 {
1273 if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0)
1274 max = (1 << operand->bits) - 1;
1275 else
1276 max = (1 << (operand->bits - 1)) - 1;
1277 min = - (1 << (operand->bits - 1));
1278
1279 if (ppc_size == PPC_OPCODE_32)
1280 {
1281 /* Some people write 32 bit hex constants with the sign
1282 extension done by hand. This shouldn't really be
1283 valid, but, to permit this code to assemble on a 64
1284 bit host, we sign extend the 32 bit value. */
1285 if (val > 0
1286 && (val & (offsetT) 0x80000000) != 0
1287 && (val & (offsetT) 0xffffffff) == val)
1288 {
1289 val -= 0x80000000;
1290 val -= 0x80000000;
1291 }
1292 }
1293 }
1294 else
1295 {
1296 max = (1 << operand->bits) - 1;
1297 min = 0;
1298 }
1299
1300 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
1301 test = - val;
1302 else
1303 test = val;
1304
1305 if (test < (offsetT) min || test > (offsetT) max)
1306 {
1307 const char *err =
1308 _("operand out of range (%s not between %ld and %ld)");
1309 char buf[100];
1310
1311 sprint_value (buf, test);
1312 as_bad_where (file, line, err, buf, min, max);
1313 }
1314 }
1315
1316 if (operand->insert)
1317 {
1318 const char *errmsg;
1319
1320 errmsg = NULL;
1321 insn = (*operand->insert) (insn, (long) val, ppc_cpu | ppc_size, &errmsg);
1322 if (errmsg != (const char *) NULL)
1323 as_bad_where (file, line, errmsg);
1324 }
1325 else
1326 insn |= (((long) val & ((1 << operand->bits) - 1))
1327 << operand->shift);
1328
1329 return insn;
1330 }
1331
1332 \f
1333 #ifdef OBJ_ELF
1334 /* Parse @got, etc. and return the desired relocation. */
1335 static bfd_reloc_code_real_type
1336 ppc_elf_suffix (str_p, exp_p)
1337 char **str_p;
1338 expressionS *exp_p;
1339 {
1340 struct map_bfd {
1341 char *string;
1342 int length;
1343 int reloc;
1344 };
1345
1346 char ident[20];
1347 char *str = *str_p;
1348 char *str2;
1349 int ch;
1350 int len;
1351 const struct map_bfd *ptr;
1352
1353 #define MAP(str,reloc) { str, sizeof (str)-1, reloc }
1354
1355 static const struct map_bfd mapping[] = {
1356 MAP ("l", (int) BFD_RELOC_LO16),
1357 MAP ("h", (int) BFD_RELOC_HI16),
1358 MAP ("ha", (int) BFD_RELOC_HI16_S),
1359 MAP ("brtaken", (int) BFD_RELOC_PPC_B16_BRTAKEN),
1360 MAP ("brntaken", (int) BFD_RELOC_PPC_B16_BRNTAKEN),
1361 MAP ("got", (int) BFD_RELOC_16_GOTOFF),
1362 MAP ("got@l", (int) BFD_RELOC_LO16_GOTOFF),
1363 MAP ("got@h", (int) BFD_RELOC_HI16_GOTOFF),
1364 MAP ("got@ha", (int) BFD_RELOC_HI16_S_GOTOFF),
1365 MAP ("fixup", (int) BFD_RELOC_CTOR), /* warning with -mrelocatable */
1366 MAP ("plt", (int) BFD_RELOC_24_PLT_PCREL),
1367 MAP ("pltrel24", (int) BFD_RELOC_24_PLT_PCREL),
1368 MAP ("copy", (int) BFD_RELOC_PPC_COPY),
1369 MAP ("globdat", (int) BFD_RELOC_PPC_GLOB_DAT),
1370 MAP ("local24pc", (int) BFD_RELOC_PPC_LOCAL24PC),
1371 MAP ("local", (int) BFD_RELOC_PPC_LOCAL24PC),
1372 MAP ("pltrel", (int) BFD_RELOC_32_PLT_PCREL),
1373 MAP ("plt@l", (int) BFD_RELOC_LO16_PLTOFF),
1374 MAP ("plt@h", (int) BFD_RELOC_HI16_PLTOFF),
1375 MAP ("plt@ha", (int) BFD_RELOC_HI16_S_PLTOFF),
1376 MAP ("sdarel", (int) BFD_RELOC_GPREL16),
1377 MAP ("sectoff", (int) BFD_RELOC_32_BASEREL),
1378 MAP ("sectoff@l", (int) BFD_RELOC_LO16_BASEREL),
1379 MAP ("sectoff@h", (int) BFD_RELOC_HI16_BASEREL),
1380 MAP ("sectoff@ha", (int) BFD_RELOC_HI16_S_BASEREL),
1381 MAP ("naddr", (int) BFD_RELOC_PPC_EMB_NADDR32),
1382 MAP ("naddr16", (int) BFD_RELOC_PPC_EMB_NADDR16),
1383 MAP ("naddr@l", (int) BFD_RELOC_PPC_EMB_NADDR16_LO),
1384 MAP ("naddr@h", (int) BFD_RELOC_PPC_EMB_NADDR16_HI),
1385 MAP ("naddr@ha", (int) BFD_RELOC_PPC_EMB_NADDR16_HA),
1386 MAP ("sdai16", (int) BFD_RELOC_PPC_EMB_SDAI16),
1387 MAP ("sda2rel", (int) BFD_RELOC_PPC_EMB_SDA2REL),
1388 MAP ("sda2i16", (int) BFD_RELOC_PPC_EMB_SDA2I16),
1389 MAP ("sda21", (int) BFD_RELOC_PPC_EMB_SDA21),
1390 MAP ("mrkref", (int) BFD_RELOC_PPC_EMB_MRKREF),
1391 MAP ("relsect", (int) BFD_RELOC_PPC_EMB_RELSEC16),
1392 MAP ("relsect@l", (int) BFD_RELOC_PPC_EMB_RELST_LO),
1393 MAP ("relsect@h", (int) BFD_RELOC_PPC_EMB_RELST_HI),
1394 MAP ("relsect@ha", (int) BFD_RELOC_PPC_EMB_RELST_HA),
1395 MAP ("bitfld", (int) BFD_RELOC_PPC_EMB_BIT_FLD),
1396 MAP ("relsda", (int) BFD_RELOC_PPC_EMB_RELSDA),
1397 MAP ("xgot", (int) BFD_RELOC_PPC_TOC16),
1398 #if BFD_DEFAULT_TARGET_SIZE == 64
1399 MAP ("higher", - (int) BFD_RELOC_PPC64_HIGHER),
1400 MAP ("highera", - (int) BFD_RELOC_PPC64_HIGHER_S),
1401 MAP ("highest", - (int) BFD_RELOC_PPC64_HIGHEST),
1402 MAP ("highesta", - (int) BFD_RELOC_PPC64_HIGHEST_S),
1403 MAP ("tocbase", - (int) BFD_RELOC_PPC64_TOC),
1404 MAP ("toc", - (int) BFD_RELOC_PPC_TOC16),
1405 MAP ("toc@l", - (int) BFD_RELOC_PPC64_TOC16_LO),
1406 MAP ("toc@h", - (int) BFD_RELOC_PPC64_TOC16_HI),
1407 MAP ("toc@ha", - (int) BFD_RELOC_PPC64_TOC16_HA),
1408 #endif
1409 { (char *) 0, 0, (int) BFD_RELOC_UNUSED }
1410 };
1411
1412 if (*str++ != '@')
1413 return BFD_RELOC_UNUSED;
1414
1415 for (ch = *str, str2 = ident;
1416 (str2 < ident + sizeof (ident) - 1
1417 && (ISALNUM (ch) || ch == '@'));
1418 ch = *++str)
1419 {
1420 *str2++ = TOLOWER (ch);
1421 }
1422
1423 *str2 = '\0';
1424 len = str2 - ident;
1425
1426 ch = ident[0];
1427 for (ptr = &mapping[0]; ptr->length > 0; ptr++)
1428 if (ch == ptr->string[0]
1429 && len == ptr->length
1430 && memcmp (ident, ptr->string, ptr->length) == 0)
1431 {
1432 int reloc = ptr->reloc;
1433
1434 if (BFD_DEFAULT_TARGET_SIZE == 64 && reloc < 0)
1435 {
1436 if (ppc_size != PPC_OPCODE_64)
1437 return BFD_RELOC_UNUSED;
1438 reloc = -reloc;
1439 }
1440
1441 if (exp_p->X_add_number != 0
1442 && (reloc == (int) BFD_RELOC_16_GOTOFF
1443 || reloc == (int) BFD_RELOC_LO16_GOTOFF
1444 || reloc == (int) BFD_RELOC_HI16_GOTOFF
1445 || reloc == (int) BFD_RELOC_HI16_S_GOTOFF))
1446 as_warn (_("identifier+constant@got means identifier@got+constant"));
1447
1448 /* Now check for identifier@suffix+constant. */
1449 if (*str == '-' || *str == '+')
1450 {
1451 char *orig_line = input_line_pointer;
1452 expressionS new_exp;
1453
1454 input_line_pointer = str;
1455 expression (&new_exp);
1456 if (new_exp.X_op == O_constant)
1457 {
1458 exp_p->X_add_number += new_exp.X_add_number;
1459 str = input_line_pointer;
1460 }
1461
1462 if (&input_line_pointer != str_p)
1463 input_line_pointer = orig_line;
1464 }
1465 *str_p = str;
1466
1467 if (BFD_DEFAULT_TARGET_SIZE == 64
1468 && reloc == (int) BFD_RELOC_PPC64_TOC
1469 && exp_p->X_op == O_symbol)
1470 {
1471 /* This reloc type ignores the symbol. Change the symbol
1472 so that the dummy .TOC. symbol can be omitted from the
1473 object file. */
1474 exp_p->X_add_symbol = &abs_symbol;
1475 }
1476
1477 return (bfd_reloc_code_real_type) reloc;
1478 }
1479
1480 return BFD_RELOC_UNUSED;
1481 }
1482
1483 /* Like normal .long/.short/.word, except support @got, etc.
1484 Clobbers input_line_pointer, checks end-of-line. */
1485 static void
1486 ppc_elf_cons (nbytes)
1487 register int nbytes; /* 1=.byte, 2=.word, 4=.long, 8=.llong. */
1488 {
1489 expressionS exp;
1490 bfd_reloc_code_real_type reloc;
1491
1492 if (is_it_end_of_statement ())
1493 {
1494 demand_empty_rest_of_line ();
1495 return;
1496 }
1497
1498 do
1499 {
1500 expression (&exp);
1501 if (exp.X_op == O_symbol
1502 && *input_line_pointer == '@'
1503 && (reloc = ppc_elf_suffix (&input_line_pointer,
1504 &exp)) != BFD_RELOC_UNUSED)
1505 {
1506 reloc_howto_type *reloc_howto;
1507 int size;
1508
1509 reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
1510 size = bfd_get_reloc_size (reloc_howto);
1511
1512 if (size > nbytes)
1513 {
1514 as_bad (_("%s relocations do not fit in %d bytes\n"),
1515 reloc_howto->name, nbytes);
1516 }
1517 else
1518 {
1519 char *p;
1520 int offset;
1521
1522 p = frag_more (nbytes);
1523 offset = 0;
1524 if (target_big_endian)
1525 offset = nbytes - size;
1526 fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size,
1527 &exp, 0, reloc);
1528 }
1529 }
1530 else
1531 emit_expr (&exp, (unsigned int) nbytes);
1532 }
1533 while (*input_line_pointer++ == ',');
1534
1535 /* Put terminator back into stream. */
1536 input_line_pointer--;
1537 demand_empty_rest_of_line ();
1538 }
1539
1540 /* Solaris pseduo op to change to the .rodata section. */
1541 static void
1542 ppc_elf_rdata (xxx)
1543 int xxx;
1544 {
1545 char *save_line = input_line_pointer;
1546 static char section[] = ".rodata\n";
1547
1548 /* Just pretend this is .section .rodata */
1549 input_line_pointer = section;
1550 obj_elf_section (xxx);
1551
1552 input_line_pointer = save_line;
1553 }
1554
1555 /* Pseudo op to make file scope bss items. */
1556 static void
1557 ppc_elf_lcomm (xxx)
1558 int xxx ATTRIBUTE_UNUSED;
1559 {
1560 register char *name;
1561 register char c;
1562 register char *p;
1563 offsetT size;
1564 register symbolS *symbolP;
1565 offsetT align;
1566 segT old_sec;
1567 int old_subsec;
1568 char *pfrag;
1569 int align2;
1570
1571 name = input_line_pointer;
1572 c = get_symbol_end ();
1573
1574 /* just after name is now '\0'. */
1575 p = input_line_pointer;
1576 *p = c;
1577 SKIP_WHITESPACE ();
1578 if (*input_line_pointer != ',')
1579 {
1580 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
1581 ignore_rest_of_line ();
1582 return;
1583 }
1584
1585 input_line_pointer++; /* skip ',' */
1586 if ((size = get_absolute_expression ()) < 0)
1587 {
1588 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
1589 ignore_rest_of_line ();
1590 return;
1591 }
1592
1593 /* The third argument to .lcomm is the alignment. */
1594 if (*input_line_pointer != ',')
1595 align = 8;
1596 else
1597 {
1598 ++input_line_pointer;
1599 align = get_absolute_expression ();
1600 if (align <= 0)
1601 {
1602 as_warn (_("ignoring bad alignment"));
1603 align = 8;
1604 }
1605 }
1606
1607 *p = 0;
1608 symbolP = symbol_find_or_make (name);
1609 *p = c;
1610
1611 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
1612 {
1613 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
1614 S_GET_NAME (symbolP));
1615 ignore_rest_of_line ();
1616 return;
1617 }
1618
1619 if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
1620 {
1621 as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
1622 S_GET_NAME (symbolP),
1623 (long) S_GET_VALUE (symbolP),
1624 (long) size);
1625
1626 ignore_rest_of_line ();
1627 return;
1628 }
1629
1630 /* Allocate_bss. */
1631 old_sec = now_seg;
1632 old_subsec = now_subseg;
1633 if (align)
1634 {
1635 /* Convert to a power of 2 alignment. */
1636 for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
1637 if (align != 1)
1638 {
1639 as_bad (_("Common alignment not a power of 2"));
1640 ignore_rest_of_line ();
1641 return;
1642 }
1643 }
1644 else
1645 align2 = 0;
1646
1647 record_alignment (bss_section, align2);
1648 subseg_set (bss_section, 0);
1649 if (align2)
1650 frag_align (align2, 0, 0);
1651 if (S_GET_SEGMENT (symbolP) == bss_section)
1652 symbol_get_frag (symbolP)->fr_symbol = 0;
1653 symbol_set_frag (symbolP, frag_now);
1654 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
1655 (char *) 0);
1656 *pfrag = 0;
1657 S_SET_SIZE (symbolP, size);
1658 S_SET_SEGMENT (symbolP, bss_section);
1659 subseg_set (old_sec, old_subsec);
1660 demand_empty_rest_of_line ();
1661 }
1662
1663 /* Validate any relocations emitted for -mrelocatable, possibly adding
1664 fixups for word relocations in writable segments, so we can adjust
1665 them at runtime. */
1666 static void
1667 ppc_elf_validate_fix (fixp, seg)
1668 fixS *fixp;
1669 segT seg;
1670 {
1671 if (fixp->fx_done || fixp->fx_pcrel)
1672 return;
1673
1674 switch (shlib)
1675 {
1676 case SHLIB_NONE:
1677 case SHLIB_PIC:
1678 return;
1679
1680 case SHLIB_MRELOCATABLE:
1681 if (fixp->fx_r_type <= BFD_RELOC_UNUSED
1682 && fixp->fx_r_type != BFD_RELOC_16_GOTOFF
1683 && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
1684 && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
1685 && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
1686 && fixp->fx_r_type != BFD_RELOC_32_BASEREL
1687 && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
1688 && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
1689 && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
1690 && (seg->flags & SEC_LOAD) != 0
1691 && strcmp (segment_name (seg), ".got2") != 0
1692 && strcmp (segment_name (seg), ".dtors") != 0
1693 && strcmp (segment_name (seg), ".ctors") != 0
1694 && strcmp (segment_name (seg), ".fixup") != 0
1695 && strcmp (segment_name (seg), ".gcc_except_table") != 0
1696 && strcmp (segment_name (seg), ".eh_frame") != 0
1697 && strcmp (segment_name (seg), ".ex_shared") != 0)
1698 {
1699 if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
1700 || fixp->fx_r_type != BFD_RELOC_CTOR)
1701 {
1702 as_bad_where (fixp->fx_file, fixp->fx_line,
1703 _("Relocation cannot be done when using -mrelocatable"));
1704 }
1705 }
1706 return;
1707 }
1708 }
1709
1710 #if BFD_DEFAULT_TARGET_SIZE == 64
1711 /* Don't emit .TOC. symbol. */
1712 int
1713 ppc_elf_frob_symbol (sym)
1714 symbolS *sym;
1715 {
1716 const char *name;
1717
1718 name = S_GET_NAME (sym);
1719 if (name != NULL && strcmp (name, ".TOC.") == 0)
1720 {
1721 S_CLEAR_EXTERNAL (sym);
1722 return 1;
1723 }
1724
1725 return 0;
1726 }
1727 #endif
1728 #endif /* OBJ_ELF */
1729 \f
1730 #ifdef TE_PE
1731
1732 /*
1733 * Summary of parse_toc_entry.
1734 *
1735 * in: Input_line_pointer points to the '[' in one of:
1736 *
1737 * [toc] [tocv] [toc32] [toc64]
1738 *
1739 * Anything else is an error of one kind or another.
1740 *
1741 * out:
1742 * return value: success or failure
1743 * toc_kind: kind of toc reference
1744 * input_line_pointer:
1745 * success: first char after the ']'
1746 * failure: unchanged
1747 *
1748 * settings:
1749 *
1750 * [toc] - rv == success, toc_kind = default_toc
1751 * [tocv] - rv == success, toc_kind = data_in_toc
1752 * [toc32] - rv == success, toc_kind = must_be_32
1753 * [toc64] - rv == success, toc_kind = must_be_64
1754 *
1755 */
1756
1757 enum toc_size_qualifier
1758 {
1759 default_toc, /* The toc cell constructed should be the system default size */
1760 data_in_toc, /* This is a direct reference to a toc cell */
1761 must_be_32, /* The toc cell constructed must be 32 bits wide */
1762 must_be_64 /* The toc cell constructed must be 64 bits wide */
1763 };
1764
1765 static int
1766 parse_toc_entry (toc_kind)
1767 enum toc_size_qualifier *toc_kind;
1768 {
1769 char *start;
1770 char *toc_spec;
1771 char c;
1772 enum toc_size_qualifier t;
1773
1774 /* Save the input_line_pointer. */
1775 start = input_line_pointer;
1776
1777 /* Skip over the '[' , and whitespace. */
1778 ++input_line_pointer;
1779 SKIP_WHITESPACE ();
1780
1781 /* Find the spelling of the operand. */
1782 toc_spec = input_line_pointer;
1783 c = get_symbol_end ();
1784
1785 if (strcmp (toc_spec, "toc") == 0)
1786 {
1787 t = default_toc;
1788 }
1789 else if (strcmp (toc_spec, "tocv") == 0)
1790 {
1791 t = data_in_toc;
1792 }
1793 else if (strcmp (toc_spec, "toc32") == 0)
1794 {
1795 t = must_be_32;
1796 }
1797 else if (strcmp (toc_spec, "toc64") == 0)
1798 {
1799 t = must_be_64;
1800 }
1801 else
1802 {
1803 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec);
1804 *input_line_pointer = c;
1805 input_line_pointer = start;
1806 return 0;
1807 }
1808
1809 /* Now find the ']'. */
1810 *input_line_pointer = c;
1811
1812 SKIP_WHITESPACE (); /* leading whitespace could be there. */
1813 c = *input_line_pointer++; /* input_line_pointer->past char in c. */
1814
1815 if (c != ']')
1816 {
1817 as_bad (_("syntax error: expected `]', found `%c'"), c);
1818 input_line_pointer = start;
1819 return 0;
1820 }
1821
1822 *toc_kind = t;
1823 return 1;
1824 }
1825 #endif
1826 \f
1827
1828 /* We need to keep a list of fixups. We can't simply generate them as
1829 we go, because that would require us to first create the frag, and
1830 that would screw up references to ``.''. */
1831
1832 struct ppc_fixup
1833 {
1834 expressionS exp;
1835 int opindex;
1836 bfd_reloc_code_real_type reloc;
1837 };
1838
1839 #define MAX_INSN_FIXUPS (5)
1840
1841 /* This routine is called for each instruction to be assembled. */
1842
1843 void
1844 md_assemble (str)
1845 char *str;
1846 {
1847 char *s;
1848 const struct powerpc_opcode *opcode;
1849 unsigned long insn;
1850 const unsigned char *opindex_ptr;
1851 int skip_optional;
1852 int need_paren;
1853 int next_opindex;
1854 struct ppc_fixup fixups[MAX_INSN_FIXUPS];
1855 int fc;
1856 char *f;
1857 int i;
1858 #ifdef OBJ_ELF
1859 bfd_reloc_code_real_type reloc;
1860 #endif
1861
1862 /* Get the opcode. */
1863 for (s = str; *s != '\0' && ! ISSPACE (*s); s++)
1864 ;
1865 if (*s != '\0')
1866 *s++ = '\0';
1867
1868 /* Look up the opcode in the hash table. */
1869 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str);
1870 if (opcode == (const struct powerpc_opcode *) NULL)
1871 {
1872 const struct powerpc_macro *macro;
1873
1874 macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str);
1875 if (macro == (const struct powerpc_macro *) NULL)
1876 as_bad (_("Unrecognized opcode: `%s'"), str);
1877 else
1878 ppc_macro (s, macro);
1879
1880 return;
1881 }
1882
1883 insn = opcode->opcode;
1884
1885 str = s;
1886 while (ISSPACE (*str))
1887 ++str;
1888
1889 /* PowerPC operands are just expressions. The only real issue is
1890 that a few operand types are optional. All cases which might use
1891 an optional operand separate the operands only with commas (in
1892 some cases parentheses are used, as in ``lwz 1,0(1)'' but such
1893 cases never have optional operands). There is never more than
1894 one optional operand for an instruction. So, before we start
1895 seriously parsing the operands, we check to see if we have an
1896 optional operand, and, if we do, we count the number of commas to
1897 see whether the operand should be omitted. */
1898 skip_optional = 0;
1899 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
1900 {
1901 const struct powerpc_operand *operand;
1902
1903 operand = &powerpc_operands[*opindex_ptr];
1904 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
1905 {
1906 unsigned int opcount;
1907
1908 /* There is an optional operand. Count the number of
1909 commas in the input line. */
1910 if (*str == '\0')
1911 opcount = 0;
1912 else
1913 {
1914 opcount = 1;
1915 s = str;
1916 while ((s = strchr (s, ',')) != (char *) NULL)
1917 {
1918 ++opcount;
1919 ++s;
1920 }
1921 }
1922
1923 /* If there are fewer operands in the line then are called
1924 for by the instruction, we want to skip the optional
1925 operand. */
1926 if (opcount < strlen (opcode->operands))
1927 skip_optional = 1;
1928
1929 break;
1930 }
1931 }
1932
1933 /* Gather the operands. */
1934 need_paren = 0;
1935 next_opindex = 0;
1936 fc = 0;
1937 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
1938 {
1939 const struct powerpc_operand *operand;
1940 const char *errmsg;
1941 char *hold;
1942 expressionS ex;
1943 char endc;
1944
1945 if (next_opindex == 0)
1946 operand = &powerpc_operands[*opindex_ptr];
1947 else
1948 {
1949 operand = &powerpc_operands[next_opindex];
1950 next_opindex = 0;
1951 }
1952
1953 errmsg = NULL;
1954
1955 /* If this is a fake operand, then we do not expect anything
1956 from the input. */
1957 if ((operand->flags & PPC_OPERAND_FAKE) != 0)
1958 {
1959 insn = (*operand->insert) (insn, 0L, ppc_cpu | ppc_size, &errmsg);
1960 if (errmsg != (const char *) NULL)
1961 as_bad (errmsg);
1962 continue;
1963 }
1964
1965 /* If this is an optional operand, and we are skipping it, just
1966 insert a zero. */
1967 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
1968 && skip_optional)
1969 {
1970 if (operand->insert)
1971 {
1972 insn = (*operand->insert) (insn, 0L, ppc_cpu | ppc_size, &errmsg);
1973 if (errmsg != (const char *) NULL)
1974 as_bad (errmsg);
1975 }
1976 if ((operand->flags & PPC_OPERAND_NEXT) != 0)
1977 next_opindex = *opindex_ptr + 1;
1978 continue;
1979 }
1980
1981 /* Gather the operand. */
1982 hold = input_line_pointer;
1983 input_line_pointer = str;
1984
1985 #ifdef TE_PE
1986 if (*input_line_pointer == '[')
1987 {
1988 /* We are expecting something like the second argument here:
1989 *
1990 * lwz r4,[toc].GS.0.static_int(rtoc)
1991 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
1992 * The argument following the `]' must be a symbol name, and the
1993 * register must be the toc register: 'rtoc' or '2'
1994 *
1995 * The effect is to 0 as the displacement field
1996 * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
1997 * the appropriate variation) reloc against it based on the symbol.
1998 * The linker will build the toc, and insert the resolved toc offset.
1999 *
2000 * Note:
2001 * o The size of the toc entry is currently assumed to be
2002 * 32 bits. This should not be assumed to be a hard coded
2003 * number.
2004 * o In an effort to cope with a change from 32 to 64 bits,
2005 * there are also toc entries that are specified to be
2006 * either 32 or 64 bits:
2007 * lwz r4,[toc32].GS.0.static_int(rtoc)
2008 * lwz r4,[toc64].GS.0.static_int(rtoc)
2009 * These demand toc entries of the specified size, and the
2010 * instruction probably requires it.
2011 */
2012
2013 int valid_toc;
2014 enum toc_size_qualifier toc_kind;
2015 bfd_reloc_code_real_type toc_reloc;
2016
2017 /* Go parse off the [tocXX] part. */
2018 valid_toc = parse_toc_entry (&toc_kind);
2019
2020 if (!valid_toc)
2021 {
2022 /* Note: message has already been issued.
2023 FIXME: what sort of recovery should we do?
2024 demand_rest_of_line (); return; ? */
2025 }
2026
2027 /* Now get the symbol following the ']'. */
2028 expression (&ex);
2029
2030 switch (toc_kind)
2031 {
2032 case default_toc:
2033 /* In this case, we may not have seen the symbol yet,
2034 since it is allowed to appear on a .extern or .globl
2035 or just be a label in the .data section. */
2036 toc_reloc = BFD_RELOC_PPC_TOC16;
2037 break;
2038 case data_in_toc:
2039 /* 1. The symbol must be defined and either in the toc
2040 section, or a global.
2041 2. The reloc generated must have the TOCDEFN flag set
2042 in upper bit mess of the reloc type.
2043 FIXME: It's a little confusing what the tocv
2044 qualifier can be used for. At the very least, I've
2045 seen three uses, only one of which I'm sure I can
2046 explain. */
2047 if (ex.X_op == O_symbol)
2048 {
2049 assert (ex.X_add_symbol != NULL);
2050 if (symbol_get_bfdsym (ex.X_add_symbol)->section
2051 != tocdata_section)
2052 {
2053 as_bad (_("[tocv] symbol is not a toc symbol"));
2054 }
2055 }
2056
2057 toc_reloc = BFD_RELOC_PPC_TOC16;
2058 break;
2059 case must_be_32:
2060 /* FIXME: these next two specifically specify 32/64 bit
2061 toc entries. We don't support them today. Is this
2062 the right way to say that? */
2063 toc_reloc = BFD_RELOC_UNUSED;
2064 as_bad (_("Unimplemented toc32 expression modifier"));
2065 break;
2066 case must_be_64:
2067 /* FIXME: see above. */
2068 toc_reloc = BFD_RELOC_UNUSED;
2069 as_bad (_("Unimplemented toc64 expression modifier"));
2070 break;
2071 default:
2072 fprintf (stderr,
2073 _("Unexpected return value [%d] from parse_toc_entry!\n"),
2074 toc_kind);
2075 abort ();
2076 break;
2077 }
2078
2079 /* We need to generate a fixup for this expression. */
2080 if (fc >= MAX_INSN_FIXUPS)
2081 as_fatal (_("too many fixups"));
2082
2083 fixups[fc].reloc = toc_reloc;
2084 fixups[fc].exp = ex;
2085 fixups[fc].opindex = *opindex_ptr;
2086 ++fc;
2087
2088 /* Ok. We've set up the fixup for the instruction. Now make it
2089 look like the constant 0 was found here. */
2090 ex.X_unsigned = 1;
2091 ex.X_op = O_constant;
2092 ex.X_add_number = 0;
2093 ex.X_add_symbol = NULL;
2094 ex.X_op_symbol = NULL;
2095 }
2096
2097 else
2098 #endif /* TE_PE */
2099 {
2100 if (! register_name (&ex))
2101 {
2102 if ((operand->flags & PPC_OPERAND_CR) != 0)
2103 cr_operand = true;
2104 expression (&ex);
2105 cr_operand = false;
2106 }
2107 }
2108
2109 str = input_line_pointer;
2110 input_line_pointer = hold;
2111
2112 if (ex.X_op == O_illegal)
2113 as_bad (_("illegal operand"));
2114 else if (ex.X_op == O_absent)
2115 as_bad (_("missing operand"));
2116 else if (ex.X_op == O_register)
2117 {
2118 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2119 (char *) NULL, 0);
2120 }
2121 else if (ex.X_op == O_constant)
2122 {
2123 #ifdef OBJ_ELF
2124 /* Allow @HA, @L, @H on constants. */
2125 char *orig_str = str;
2126
2127 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2128 switch (reloc)
2129 {
2130 default:
2131 str = orig_str;
2132 break;
2133
2134 case BFD_RELOC_LO16:
2135 /* X_unsigned is the default, so if the user has done
2136 something which cleared it, we always produce a
2137 signed value. */
2138 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2139 ex.X_add_number &= 0xffff;
2140 else
2141 ex.X_add_number = SEX16 (ex.X_add_number);
2142 break;
2143
2144 case BFD_RELOC_HI16:
2145 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2146 ex.X_add_number = PPC_HI (ex.X_add_number);
2147 else
2148 ex.X_add_number = SEX16 (PPC_HI (ex.X_add_number));
2149 break;
2150
2151 case BFD_RELOC_HI16_S:
2152 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2153 ex.X_add_number = PPC_HA (ex.X_add_number);
2154 else
2155 ex.X_add_number = SEX16 (PPC_HA (ex.X_add_number));
2156 break;
2157
2158 #if BFD_DEFAULT_TARGET_SIZE == 64
2159 case BFD_RELOC_PPC64_HIGHER:
2160 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2161 ex.X_add_number = PPC_HIGHER (ex.X_add_number);
2162 else
2163 ex.X_add_number = SEX16 (PPC_HIGHER (ex.X_add_number));
2164 break;
2165
2166 case BFD_RELOC_PPC64_HIGHER_S:
2167 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2168 ex.X_add_number = PPC_HIGHERA (ex.X_add_number);
2169 else
2170 ex.X_add_number = SEX16 (PPC_HIGHERA (ex.X_add_number));
2171 break;
2172
2173 case BFD_RELOC_PPC64_HIGHEST:
2174 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2175 ex.X_add_number = PPC_HIGHEST (ex.X_add_number);
2176 else
2177 ex.X_add_number = SEX16 (PPC_HIGHEST (ex.X_add_number));
2178 break;
2179
2180 case BFD_RELOC_PPC64_HIGHEST_S:
2181 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2182 ex.X_add_number = PPC_HIGHESTA (ex.X_add_number);
2183 else
2184 ex.X_add_number = SEX16 (PPC_HIGHESTA (ex.X_add_number));
2185 break;
2186 #endif /* BFD_DEFAULT_TARGET_SIZE == 64 */
2187 }
2188 #endif /* OBJ_ELF */
2189 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2190 (char *) NULL, 0);
2191 }
2192 #ifdef OBJ_ELF
2193 else if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2194 {
2195 /* For the absolute forms of branches, convert the PC
2196 relative form back into the absolute. */
2197 if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
2198 {
2199 switch (reloc)
2200 {
2201 case BFD_RELOC_PPC_B26:
2202 reloc = BFD_RELOC_PPC_BA26;
2203 break;
2204 case BFD_RELOC_PPC_B16:
2205 reloc = BFD_RELOC_PPC_BA16;
2206 break;
2207 case BFD_RELOC_PPC_B16_BRTAKEN:
2208 reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
2209 break;
2210 case BFD_RELOC_PPC_B16_BRNTAKEN:
2211 reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
2212 break;
2213 default:
2214 break;
2215 }
2216 }
2217
2218 if (BFD_DEFAULT_TARGET_SIZE == 64
2219 && ppc_size == PPC_OPCODE_64
2220 && (operand->flags & PPC_OPERAND_DS) != 0)
2221 {
2222 switch (reloc)
2223 {
2224 case BFD_RELOC_16:
2225 reloc = BFD_RELOC_PPC64_ADDR16_DS;
2226 break;
2227 case BFD_RELOC_LO16:
2228 reloc = BFD_RELOC_PPC64_ADDR16_LO_DS;
2229 break;
2230 case BFD_RELOC_16_GOTOFF:
2231 reloc = BFD_RELOC_PPC64_GOT16_DS;
2232 break;
2233 case BFD_RELOC_LO16_GOTOFF:
2234 reloc = BFD_RELOC_PPC64_GOT16_LO_DS;
2235 break;
2236 case BFD_RELOC_LO16_PLTOFF:
2237 reloc = BFD_RELOC_PPC64_PLT16_LO_DS;
2238 break;
2239 case BFD_RELOC_32_BASEREL:
2240 reloc = BFD_RELOC_PPC64_SECTOFF_DS;
2241 break;
2242 case BFD_RELOC_LO16_BASEREL:
2243 reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS;
2244 break;
2245 case BFD_RELOC_PPC_TOC16:
2246 reloc = BFD_RELOC_PPC64_TOC16_DS;
2247 break;
2248 case BFD_RELOC_PPC64_TOC16_LO:
2249 reloc = BFD_RELOC_PPC64_TOC16_LO_DS;
2250 break;
2251 case BFD_RELOC_PPC64_PLTGOT16:
2252 reloc = BFD_RELOC_PPC64_PLTGOT16_DS;
2253 break;
2254 case BFD_RELOC_PPC64_PLTGOT16_LO:
2255 reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS;
2256 break;
2257 default:
2258 as_bad (_("unsupported relocation for DS offset field"));
2259 break;
2260 }
2261 }
2262
2263 /* We need to generate a fixup for this expression. */
2264 if (fc >= MAX_INSN_FIXUPS)
2265 as_fatal (_("too many fixups"));
2266 fixups[fc].exp = ex;
2267 fixups[fc].opindex = 0;
2268 fixups[fc].reloc = reloc;
2269 ++fc;
2270 }
2271 #endif /* OBJ_ELF */
2272
2273 else
2274 {
2275 /* We need to generate a fixup for this expression. */
2276 if (fc >= MAX_INSN_FIXUPS)
2277 as_fatal (_("too many fixups"));
2278 fixups[fc].exp = ex;
2279 fixups[fc].opindex = *opindex_ptr;
2280 fixups[fc].reloc = BFD_RELOC_UNUSED;
2281 ++fc;
2282 }
2283
2284 if (need_paren)
2285 {
2286 endc = ')';
2287 need_paren = 0;
2288 }
2289 else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
2290 {
2291 endc = '(';
2292 need_paren = 1;
2293 }
2294 else
2295 endc = ',';
2296
2297 /* The call to expression should have advanced str past any
2298 whitespace. */
2299 if (*str != endc
2300 && (endc != ',' || *str != '\0'))
2301 {
2302 as_bad (_("syntax error; found `%c' but expected `%c'"), *str, endc);
2303 break;
2304 }
2305
2306 if (*str != '\0')
2307 ++str;
2308 }
2309
2310 while (ISSPACE (*str))
2311 ++str;
2312
2313 if (*str != '\0')
2314 as_bad (_("junk at end of line: `%s'"), str);
2315
2316 /* Write out the instruction. */
2317 f = frag_more (4);
2318 md_number_to_chars (f, insn, 4);
2319
2320 #ifdef OBJ_ELF
2321 dwarf2_emit_insn (4);
2322 #endif
2323
2324 /* Create any fixups. At this point we do not use a
2325 bfd_reloc_code_real_type, but instead just use the
2326 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2327 handle fixups for any operand type, although that is admittedly
2328 not a very exciting feature. We pick a BFD reloc type in
2329 md_apply_fix3. */
2330 for (i = 0; i < fc; i++)
2331 {
2332 const struct powerpc_operand *operand;
2333
2334 operand = &powerpc_operands[fixups[i].opindex];
2335 if (fixups[i].reloc != BFD_RELOC_UNUSED)
2336 {
2337 reloc_howto_type *reloc_howto;
2338 int size;
2339 int offset;
2340 fixS *fixP;
2341
2342 reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
2343 if (!reloc_howto)
2344 abort ();
2345
2346 size = bfd_get_reloc_size (reloc_howto);
2347 offset = target_big_endian ? (4 - size) : 0;
2348
2349 if (size < 1 || size > 4)
2350 abort ();
2351
2352 fixP = fix_new_exp (frag_now,
2353 f - frag_now->fr_literal + offset,
2354 size,
2355 &fixups[i].exp,
2356 reloc_howto->pc_relative,
2357 fixups[i].reloc);
2358
2359 /* Turn off complaints that the addend is too large for things like
2360 foo+100000@ha. */
2361 switch (fixups[i].reloc)
2362 {
2363 case BFD_RELOC_16_GOTOFF:
2364 case BFD_RELOC_PPC_TOC16:
2365 case BFD_RELOC_LO16:
2366 case BFD_RELOC_HI16:
2367 case BFD_RELOC_HI16_S:
2368 #ifdef OBJ_ELF
2369 #if BFD_DEFAULT_TARGET_SIZE == 64
2370 case BFD_RELOC_PPC64_HIGHER:
2371 case BFD_RELOC_PPC64_HIGHER_S:
2372 case BFD_RELOC_PPC64_HIGHEST:
2373 case BFD_RELOC_PPC64_HIGHEST_S:
2374 #endif
2375 #endif
2376 fixP->fx_no_overflow = 1;
2377 break;
2378 default:
2379 break;
2380 }
2381 }
2382 else
2383 fix_new_exp (frag_now,
2384 f - frag_now->fr_literal,
2385 4,
2386 &fixups[i].exp,
2387 (operand->flags & PPC_OPERAND_RELATIVE) != 0,
2388 ((bfd_reloc_code_real_type)
2389 (fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
2390 }
2391 }
2392
2393 /* Handle a macro. Gather all the operands, transform them as
2394 described by the macro, and call md_assemble recursively. All the
2395 operands are separated by commas; we don't accept parentheses
2396 around operands here. */
2397
2398 static void
2399 ppc_macro (str, macro)
2400 char *str;
2401 const struct powerpc_macro *macro;
2402 {
2403 char *operands[10];
2404 unsigned int count;
2405 char *s;
2406 unsigned int len;
2407 const char *format;
2408 int arg;
2409 char *send;
2410 char *complete;
2411
2412 /* Gather the users operands into the operands array. */
2413 count = 0;
2414 s = str;
2415 while (1)
2416 {
2417 if (count >= sizeof operands / sizeof operands[0])
2418 break;
2419 operands[count++] = s;
2420 s = strchr (s, ',');
2421 if (s == (char *) NULL)
2422 break;
2423 *s++ = '\0';
2424 }
2425
2426 if (count != macro->operands)
2427 {
2428 as_bad (_("wrong number of operands"));
2429 return;
2430 }
2431
2432 /* Work out how large the string must be (the size is unbounded
2433 because it includes user input). */
2434 len = 0;
2435 format = macro->format;
2436 while (*format != '\0')
2437 {
2438 if (*format != '%')
2439 {
2440 ++len;
2441 ++format;
2442 }
2443 else
2444 {
2445 arg = strtol (format + 1, &send, 10);
2446 know (send != format && arg >= 0 && arg < count);
2447 len += strlen (operands[arg]);
2448 format = send;
2449 }
2450 }
2451
2452 /* Put the string together. */
2453 complete = s = (char *) alloca (len + 1);
2454 format = macro->format;
2455 while (*format != '\0')
2456 {
2457 if (*format != '%')
2458 *s++ = *format++;
2459 else
2460 {
2461 arg = strtol (format + 1, &send, 10);
2462 strcpy (s, operands[arg]);
2463 s += strlen (s);
2464 format = send;
2465 }
2466 }
2467 *s = '\0';
2468
2469 /* Assemble the constructed instruction. */
2470 md_assemble (complete);
2471 }
2472 \f
2473 #ifdef OBJ_ELF
2474 /* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED. */
2475
2476 int
2477 ppc_section_letter (letter, ptr_msg)
2478 int letter;
2479 char **ptr_msg;
2480 {
2481 if (letter == 'e')
2482 return SHF_EXCLUDE;
2483
2484 *ptr_msg = _("Bad .section directive: want a,e,w,x,M,S in string");
2485 return 0;
2486 }
2487
2488 int
2489 ppc_section_word (str, len)
2490 char *str;
2491 size_t len;
2492 {
2493 if (len == 7 && strncmp (str, "exclude", 7) == 0)
2494 return SHF_EXCLUDE;
2495
2496 return -1;
2497 }
2498
2499 int
2500 ppc_section_type (str, len)
2501 char *str;
2502 size_t len;
2503 {
2504 if (len == 7 && strncmp (str, "ordered", 7) == 0)
2505 return SHT_ORDERED;
2506
2507 return -1;
2508 }
2509
2510 int
2511 ppc_section_flags (flags, attr, type)
2512 int flags;
2513 int attr;
2514 int type;
2515 {
2516 if (type == SHT_ORDERED)
2517 flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
2518
2519 if (attr & SHF_EXCLUDE)
2520 flags |= SEC_EXCLUDE;
2521
2522 return flags;
2523 }
2524 #endif /* OBJ_ELF */
2525
2526 \f
2527 /* Pseudo-op handling. */
2528
2529 /* The .byte pseudo-op. This is similar to the normal .byte
2530 pseudo-op, but it can also take a single ASCII string. */
2531
2532 static void
2533 ppc_byte (ignore)
2534 int ignore ATTRIBUTE_UNUSED;
2535 {
2536 if (*input_line_pointer != '\"')
2537 {
2538 cons (1);
2539 return;
2540 }
2541
2542 /* Gather characters. A real double quote is doubled. Unusual
2543 characters are not permitted. */
2544 ++input_line_pointer;
2545 while (1)
2546 {
2547 char c;
2548
2549 c = *input_line_pointer++;
2550
2551 if (c == '\"')
2552 {
2553 if (*input_line_pointer != '\"')
2554 break;
2555 ++input_line_pointer;
2556 }
2557
2558 FRAG_APPEND_1_CHAR (c);
2559 }
2560
2561 demand_empty_rest_of_line ();
2562 }
2563 \f
2564 #ifdef OBJ_XCOFF
2565
2566 /* XCOFF specific pseudo-op handling. */
2567
2568 /* This is set if we are creating a .stabx symbol, since we don't want
2569 to handle symbol suffixes for such symbols. */
2570 static boolean ppc_stab_symbol;
2571
2572 /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
2573 symbols in the .bss segment as though they were local common
2574 symbols, and uses a different smclas. The native Aix 4.3.3 assember
2575 aligns .comm and .lcomm to 4 bytes. */
2576
2577 static void
2578 ppc_comm (lcomm)
2579 int lcomm;
2580 {
2581 asection *current_seg = now_seg;
2582 subsegT current_subseg = now_subseg;
2583 char *name;
2584 char endc;
2585 char *end_name;
2586 offsetT size;
2587 offsetT align;
2588 symbolS *lcomm_sym = NULL;
2589 symbolS *sym;
2590 char *pfrag;
2591
2592 name = input_line_pointer;
2593 endc = get_symbol_end ();
2594 end_name = input_line_pointer;
2595 *end_name = endc;
2596
2597 if (*input_line_pointer != ',')
2598 {
2599 as_bad (_("missing size"));
2600 ignore_rest_of_line ();
2601 return;
2602 }
2603 ++input_line_pointer;
2604
2605 size = get_absolute_expression ();
2606 if (size < 0)
2607 {
2608 as_bad (_("negative size"));
2609 ignore_rest_of_line ();
2610 return;
2611 }
2612
2613 if (! lcomm)
2614 {
2615 /* The third argument to .comm is the alignment. */
2616 if (*input_line_pointer != ',')
2617 align = 2;
2618 else
2619 {
2620 ++input_line_pointer;
2621 align = get_absolute_expression ();
2622 if (align <= 0)
2623 {
2624 as_warn (_("ignoring bad alignment"));
2625 align = 2;
2626 }
2627 }
2628 }
2629 else
2630 {
2631 char *lcomm_name;
2632 char lcomm_endc;
2633
2634 if (size <= 4)
2635 align = 2;
2636 else
2637 align = 3;
2638
2639 /* The third argument to .lcomm appears to be the real local
2640 common symbol to create. References to the symbol named in
2641 the first argument are turned into references to the third
2642 argument. */
2643 if (*input_line_pointer != ',')
2644 {
2645 as_bad (_("missing real symbol name"));
2646 ignore_rest_of_line ();
2647 return;
2648 }
2649 ++input_line_pointer;
2650
2651 lcomm_name = input_line_pointer;
2652 lcomm_endc = get_symbol_end ();
2653
2654 lcomm_sym = symbol_find_or_make (lcomm_name);
2655
2656 *input_line_pointer = lcomm_endc;
2657 }
2658
2659 *end_name = '\0';
2660 sym = symbol_find_or_make (name);
2661 *end_name = endc;
2662
2663 if (S_IS_DEFINED (sym)
2664 || S_GET_VALUE (sym) != 0)
2665 {
2666 as_bad (_("attempt to redefine symbol"));
2667 ignore_rest_of_line ();
2668 return;
2669 }
2670
2671 record_alignment (bss_section, align);
2672
2673 if (! lcomm
2674 || ! S_IS_DEFINED (lcomm_sym))
2675 {
2676 symbolS *def_sym;
2677 offsetT def_size;
2678
2679 if (! lcomm)
2680 {
2681 def_sym = sym;
2682 def_size = size;
2683 S_SET_EXTERNAL (sym);
2684 }
2685 else
2686 {
2687 symbol_get_tc (lcomm_sym)->output = 1;
2688 def_sym = lcomm_sym;
2689 def_size = 0;
2690 }
2691
2692 subseg_set (bss_section, 1);
2693 frag_align (align, 0, 0);
2694
2695 symbol_set_frag (def_sym, frag_now);
2696 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
2697 def_size, (char *) NULL);
2698 *pfrag = 0;
2699 S_SET_SEGMENT (def_sym, bss_section);
2700 symbol_get_tc (def_sym)->align = align;
2701 }
2702 else if (lcomm)
2703 {
2704 /* Align the size of lcomm_sym. */
2705 symbol_get_frag (lcomm_sym)->fr_offset =
2706 ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
2707 &~ ((1 << align) - 1));
2708 if (align > symbol_get_tc (lcomm_sym)->align)
2709 symbol_get_tc (lcomm_sym)->align = align;
2710 }
2711
2712 if (lcomm)
2713 {
2714 /* Make sym an offset from lcomm_sym. */
2715 S_SET_SEGMENT (sym, bss_section);
2716 symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
2717 S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
2718 symbol_get_frag (lcomm_sym)->fr_offset += size;
2719 }
2720
2721 subseg_set (current_seg, current_subseg);
2722
2723 demand_empty_rest_of_line ();
2724 }
2725
2726 /* The .csect pseudo-op. This switches us into a different
2727 subsegment. The first argument is a symbol whose value is the
2728 start of the .csect. In COFF, csect symbols get special aux
2729 entries defined by the x_csect field of union internal_auxent. The
2730 optional second argument is the alignment (the default is 2). */
2731
2732 static void
2733 ppc_csect (ignore)
2734 int ignore ATTRIBUTE_UNUSED;
2735 {
2736 char *name;
2737 char endc;
2738 symbolS *sym;
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 (S_GET_NAME (sym)[0] == '\0')
2748 {
2749 /* An unnamed csect is assumed to be [PR]. */
2750 symbol_get_tc (sym)->class = XMC_PR;
2751 }
2752
2753 ppc_change_csect (sym);
2754
2755 if (*input_line_pointer == ',')
2756 {
2757 ++input_line_pointer;
2758 symbol_get_tc (sym)->align = get_absolute_expression ();
2759 }
2760
2761 demand_empty_rest_of_line ();
2762 }
2763
2764 /* Change to a different csect. */
2765
2766 static void
2767 ppc_change_csect (sym)
2768 symbolS *sym;
2769 {
2770 if (S_IS_DEFINED (sym))
2771 subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
2772 else
2773 {
2774 symbolS **list_ptr;
2775 int after_toc;
2776 int hold_chunksize;
2777 symbolS *list;
2778
2779 /* This is a new csect. We need to look at the symbol class to
2780 figure out whether it should go in the text section or the
2781 data section. */
2782 after_toc = 0;
2783 switch (symbol_get_tc (sym)->class)
2784 {
2785 case XMC_PR:
2786 case XMC_RO:
2787 case XMC_DB:
2788 case XMC_GL:
2789 case XMC_XO:
2790 case XMC_SV:
2791 case XMC_TI:
2792 case XMC_TB:
2793 S_SET_SEGMENT (sym, text_section);
2794 symbol_get_tc (sym)->subseg = ppc_text_subsegment;
2795 ++ppc_text_subsegment;
2796 list_ptr = &ppc_text_csects;
2797 break;
2798 case XMC_RW:
2799 case XMC_TC0:
2800 case XMC_TC:
2801 case XMC_DS:
2802 case XMC_UA:
2803 case XMC_BS:
2804 case XMC_UC:
2805 if (ppc_toc_csect != NULL
2806 && (symbol_get_tc (ppc_toc_csect)->subseg + 1
2807 == ppc_data_subsegment))
2808 after_toc = 1;
2809 S_SET_SEGMENT (sym, data_section);
2810 symbol_get_tc (sym)->subseg = ppc_data_subsegment;
2811 ++ppc_data_subsegment;
2812 list_ptr = &ppc_data_csects;
2813 break;
2814 default:
2815 abort ();
2816 }
2817
2818 /* We set the obstack chunk size to a small value before
2819 changing subsegments, so that we don't use a lot of memory
2820 space for what may be a small section. */
2821 hold_chunksize = chunksize;
2822 chunksize = 64;
2823
2824 subseg_new (segment_name (S_GET_SEGMENT (sym)),
2825 symbol_get_tc (sym)->subseg);
2826
2827 chunksize = hold_chunksize;
2828
2829 if (after_toc)
2830 ppc_after_toc_frag = frag_now;
2831
2832 symbol_set_frag (sym, frag_now);
2833 S_SET_VALUE (sym, (valueT) frag_now_fix ());
2834
2835 symbol_get_tc (sym)->align = (ppc_xcoff64) ? 3 : 2;
2836 symbol_get_tc (sym)->output = 1;
2837 symbol_get_tc (sym)->within = sym;
2838
2839 for (list = *list_ptr;
2840 symbol_get_tc (list)->next != (symbolS *) NULL;
2841 list = symbol_get_tc (list)->next)
2842 ;
2843 symbol_get_tc (list)->next = sym;
2844
2845 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
2846 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
2847 &symbol_lastP);
2848 }
2849
2850 ppc_current_csect = sym;
2851 }
2852
2853 /* This function handles the .text and .data pseudo-ops. These
2854 pseudo-ops aren't really used by XCOFF; we implement them for the
2855 convenience of people who aren't used to XCOFF. */
2856
2857 static void
2858 ppc_section (type)
2859 int type;
2860 {
2861 const char *name;
2862 symbolS *sym;
2863
2864 if (type == 't')
2865 name = ".text[PR]";
2866 else if (type == 'd')
2867 name = ".data[RW]";
2868 else
2869 abort ();
2870
2871 sym = symbol_find_or_make (name);
2872
2873 ppc_change_csect (sym);
2874
2875 demand_empty_rest_of_line ();
2876 }
2877
2878 /* This function handles the .section pseudo-op. This is mostly to
2879 give an error, since XCOFF only supports .text, .data and .bss, but
2880 we do permit the user to name the text or data section. */
2881
2882 static void
2883 ppc_named_section (ignore)
2884 int ignore ATTRIBUTE_UNUSED;
2885 {
2886 char *user_name;
2887 const char *real_name;
2888 char c;
2889 symbolS *sym;
2890
2891 user_name = input_line_pointer;
2892 c = get_symbol_end ();
2893
2894 if (strcmp (user_name, ".text") == 0)
2895 real_name = ".text[PR]";
2896 else if (strcmp (user_name, ".data") == 0)
2897 real_name = ".data[RW]";
2898 else
2899 {
2900 as_bad (_("The XCOFF file format does not support arbitrary sections"));
2901 *input_line_pointer = c;
2902 ignore_rest_of_line ();
2903 return;
2904 }
2905
2906 *input_line_pointer = c;
2907
2908 sym = symbol_find_or_make (real_name);
2909
2910 ppc_change_csect (sym);
2911
2912 demand_empty_rest_of_line ();
2913 }
2914
2915 /* The .extern pseudo-op. We create an undefined symbol. */
2916
2917 static void
2918 ppc_extern (ignore)
2919 int ignore ATTRIBUTE_UNUSED;
2920 {
2921 char *name;
2922 char endc;
2923
2924 name = input_line_pointer;
2925 endc = get_symbol_end ();
2926
2927 (void) symbol_find_or_make (name);
2928
2929 *input_line_pointer = endc;
2930
2931 demand_empty_rest_of_line ();
2932 }
2933
2934 /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
2935
2936 static void
2937 ppc_lglobl (ignore)
2938 int ignore ATTRIBUTE_UNUSED;
2939 {
2940 char *name;
2941 char endc;
2942 symbolS *sym;
2943
2944 name = input_line_pointer;
2945 endc = get_symbol_end ();
2946
2947 sym = symbol_find_or_make (name);
2948
2949 *input_line_pointer = endc;
2950
2951 symbol_get_tc (sym)->output = 1;
2952
2953 demand_empty_rest_of_line ();
2954 }
2955
2956 /* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
2957 although I don't know why it bothers. */
2958
2959 static void
2960 ppc_rename (ignore)
2961 int ignore ATTRIBUTE_UNUSED;
2962 {
2963 char *name;
2964 char endc;
2965 symbolS *sym;
2966 int len;
2967
2968 name = input_line_pointer;
2969 endc = get_symbol_end ();
2970
2971 sym = symbol_find_or_make (name);
2972
2973 *input_line_pointer = endc;
2974
2975 if (*input_line_pointer != ',')
2976 {
2977 as_bad (_("missing rename string"));
2978 ignore_rest_of_line ();
2979 return;
2980 }
2981 ++input_line_pointer;
2982
2983 symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
2984
2985 demand_empty_rest_of_line ();
2986 }
2987
2988 /* The .stabx pseudo-op. This is similar to a normal .stabs
2989 pseudo-op, but slightly different. A sample is
2990 .stabx "main:F-1",.main,142,0
2991 The first argument is the symbol name to create. The second is the
2992 value, and the third is the storage class. The fourth seems to be
2993 always zero, and I am assuming it is the type. */
2994
2995 static void
2996 ppc_stabx (ignore)
2997 int ignore ATTRIBUTE_UNUSED;
2998 {
2999 char *name;
3000 int len;
3001 symbolS *sym;
3002 expressionS exp;
3003
3004 name = demand_copy_C_string (&len);
3005
3006 if (*input_line_pointer != ',')
3007 {
3008 as_bad (_("missing value"));
3009 return;
3010 }
3011 ++input_line_pointer;
3012
3013 ppc_stab_symbol = true;
3014 sym = symbol_make (name);
3015 ppc_stab_symbol = false;
3016
3017 symbol_get_tc (sym)->real_name = name;
3018
3019 (void) expression (&exp);
3020
3021 switch (exp.X_op)
3022 {
3023 case O_illegal:
3024 case O_absent:
3025 case O_big:
3026 as_bad (_("illegal .stabx expression; zero assumed"));
3027 exp.X_add_number = 0;
3028 /* Fall through. */
3029 case O_constant:
3030 S_SET_VALUE (sym, (valueT) exp.X_add_number);
3031 symbol_set_frag (sym, &zero_address_frag);
3032 break;
3033
3034 case O_symbol:
3035 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
3036 symbol_set_value_expression (sym, &exp);
3037 else
3038 {
3039 S_SET_VALUE (sym,
3040 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
3041 symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
3042 }
3043 break;
3044
3045 default:
3046 /* The value is some complex expression. This will probably
3047 fail at some later point, but this is probably the right
3048 thing to do here. */
3049 symbol_set_value_expression (sym, &exp);
3050 break;
3051 }
3052
3053 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3054 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3055
3056 if (*input_line_pointer != ',')
3057 {
3058 as_bad (_("missing class"));
3059 return;
3060 }
3061 ++input_line_pointer;
3062
3063 S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
3064
3065 if (*input_line_pointer != ',')
3066 {
3067 as_bad (_("missing type"));
3068 return;
3069 }
3070 ++input_line_pointer;
3071
3072 S_SET_DATA_TYPE (sym, get_absolute_expression ());
3073
3074 symbol_get_tc (sym)->output = 1;
3075
3076 if (S_GET_STORAGE_CLASS (sym) == C_STSYM) {
3077
3078 symbol_get_tc (sym)->within = ppc_current_block;
3079
3080 /* In this case :
3081
3082 .bs name
3083 .stabx "z",arrays_,133,0
3084 .es
3085
3086 .comm arrays_,13768,3
3087
3088 resolve_symbol_value will copy the exp's "within" into sym's when the
3089 offset is 0. Since this seems to be corner case problem,
3090 only do the correction for storage class C_STSYM. A better solution
3091 would be to have the tc field updated in ppc_symbol_new_hook. */
3092
3093 if (exp.X_op == O_symbol)
3094 {
3095 symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block;
3096 }
3097 }
3098
3099 if (exp.X_op != O_symbol
3100 || ! S_IS_EXTERNAL (exp.X_add_symbol)
3101 || S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
3102 ppc_frob_label (sym);
3103 else
3104 {
3105 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3106 symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
3107 if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
3108 symbol_get_tc (ppc_current_csect)->within = sym;
3109 }
3110
3111 demand_empty_rest_of_line ();
3112 }
3113
3114 /* The .function pseudo-op. This takes several arguments. The first
3115 argument seems to be the external name of the symbol. The second
3116 argment seems to be the label for the start of the function. gcc
3117 uses the same name for both. I have no idea what the third and
3118 fourth arguments are meant to be. The optional fifth argument is
3119 an expression for the size of the function. In COFF this symbol
3120 gets an aux entry like that used for a csect. */
3121
3122 static void
3123 ppc_function (ignore)
3124 int ignore ATTRIBUTE_UNUSED;
3125 {
3126 char *name;
3127 char endc;
3128 char *s;
3129 symbolS *ext_sym;
3130 symbolS *lab_sym;
3131
3132 name = input_line_pointer;
3133 endc = get_symbol_end ();
3134
3135 /* Ignore any [PR] suffix. */
3136 name = ppc_canonicalize_symbol_name (name);
3137 s = strchr (name, '[');
3138 if (s != (char *) NULL
3139 && strcmp (s + 1, "PR]") == 0)
3140 *s = '\0';
3141
3142 ext_sym = symbol_find_or_make (name);
3143
3144 *input_line_pointer = endc;
3145
3146 if (*input_line_pointer != ',')
3147 {
3148 as_bad (_("missing symbol name"));
3149 ignore_rest_of_line ();
3150 return;
3151 }
3152 ++input_line_pointer;
3153
3154 name = input_line_pointer;
3155 endc = get_symbol_end ();
3156
3157 lab_sym = symbol_find_or_make (name);
3158
3159 *input_line_pointer = endc;
3160
3161 if (ext_sym != lab_sym)
3162 {
3163 expressionS exp;
3164
3165 exp.X_op = O_symbol;
3166 exp.X_add_symbol = lab_sym;
3167 exp.X_op_symbol = NULL;
3168 exp.X_add_number = 0;
3169 exp.X_unsigned = 0;
3170 symbol_set_value_expression (ext_sym, &exp);
3171 }
3172
3173 if (symbol_get_tc (ext_sym)->class == -1)
3174 symbol_get_tc (ext_sym)->class = XMC_PR;
3175 symbol_get_tc (ext_sym)->output = 1;
3176
3177 if (*input_line_pointer == ',')
3178 {
3179 expressionS ignore;
3180
3181 /* Ignore the third argument. */
3182 ++input_line_pointer;
3183 expression (&ignore);
3184 if (*input_line_pointer == ',')
3185 {
3186 /* Ignore the fourth argument. */
3187 ++input_line_pointer;
3188 expression (&ignore);
3189 if (*input_line_pointer == ',')
3190 {
3191 /* The fifth argument is the function size. */
3192 ++input_line_pointer;
3193 symbol_get_tc (ext_sym)->size = symbol_new ("L0\001",
3194 absolute_section,
3195 (valueT) 0,
3196 &zero_address_frag);
3197 pseudo_set (symbol_get_tc (ext_sym)->size);
3198 }
3199 }
3200 }
3201
3202 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
3203 SF_SET_FUNCTION (ext_sym);
3204 SF_SET_PROCESS (ext_sym);
3205 coff_add_linesym (ext_sym);
3206
3207 demand_empty_rest_of_line ();
3208 }
3209
3210 /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
3211 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
3212 with the correct line number */
3213
3214 static symbolS *saved_bi_sym = 0;
3215
3216 static void
3217 ppc_bf (ignore)
3218 int ignore ATTRIBUTE_UNUSED;
3219 {
3220 symbolS *sym;
3221
3222 sym = symbol_make (".bf");
3223 S_SET_SEGMENT (sym, text_section);
3224 symbol_set_frag (sym, frag_now);
3225 S_SET_VALUE (sym, frag_now_fix ());
3226 S_SET_STORAGE_CLASS (sym, C_FCN);
3227
3228 coff_line_base = get_absolute_expression ();
3229
3230 S_SET_NUMBER_AUXILIARY (sym, 1);
3231 SA_SET_SYM_LNNO (sym, coff_line_base);
3232
3233 /* Line number for bi. */
3234 if (saved_bi_sym)
3235 {
3236 S_SET_VALUE (saved_bi_sym, coff_n_line_nos);
3237 saved_bi_sym = 0;
3238 }
3239
3240
3241 symbol_get_tc (sym)->output = 1;
3242
3243 ppc_frob_label (sym);
3244
3245 demand_empty_rest_of_line ();
3246 }
3247
3248 /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
3249 ".ef", except that the line number is absolute, not relative to the
3250 most recent ".bf" symbol. */
3251
3252 static void
3253 ppc_ef (ignore)
3254 int ignore ATTRIBUTE_UNUSED;
3255 {
3256 symbolS *sym;
3257
3258 sym = symbol_make (".ef");
3259 S_SET_SEGMENT (sym, text_section);
3260 symbol_set_frag (sym, frag_now);
3261 S_SET_VALUE (sym, frag_now_fix ());
3262 S_SET_STORAGE_CLASS (sym, C_FCN);
3263 S_SET_NUMBER_AUXILIARY (sym, 1);
3264 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3265 symbol_get_tc (sym)->output = 1;
3266
3267 ppc_frob_label (sym);
3268
3269 demand_empty_rest_of_line ();
3270 }
3271
3272 /* The .bi and .ei pseudo-ops. These take a string argument and
3273 generates a C_BINCL or C_EINCL symbol, which goes at the start of
3274 the symbol list. The value of .bi will be know when the next .bf
3275 is encountered. */
3276
3277 static void
3278 ppc_biei (ei)
3279 int ei;
3280 {
3281 static symbolS *last_biei;
3282
3283 char *name;
3284 int len;
3285 symbolS *sym;
3286 symbolS *look;
3287
3288 name = demand_copy_C_string (&len);
3289
3290 /* The value of these symbols is actually file offset. Here we set
3291 the value to the index into the line number entries. In
3292 ppc_frob_symbols we set the fix_line field, which will cause BFD
3293 to do the right thing. */
3294
3295 sym = symbol_make (name);
3296 /* obj-coff.c currently only handles line numbers correctly in the
3297 .text section. */
3298 S_SET_SEGMENT (sym, text_section);
3299 S_SET_VALUE (sym, coff_n_line_nos);
3300 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3301
3302 S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
3303 symbol_get_tc (sym)->output = 1;
3304
3305 /* Save bi. */
3306 if (ei)
3307 saved_bi_sym = 0;
3308 else
3309 saved_bi_sym = sym;
3310
3311 for (look = last_biei ? last_biei : symbol_rootP;
3312 (look != (symbolS *) NULL
3313 && (S_GET_STORAGE_CLASS (look) == C_FILE
3314 || S_GET_STORAGE_CLASS (look) == C_BINCL
3315 || S_GET_STORAGE_CLASS (look) == C_EINCL));
3316 look = symbol_next (look))
3317 ;
3318 if (look != (symbolS *) NULL)
3319 {
3320 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3321 symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
3322 last_biei = sym;
3323 }
3324
3325 demand_empty_rest_of_line ();
3326 }
3327
3328 /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
3329 There is one argument, which is a csect symbol. The value of the
3330 .bs symbol is the index of this csect symbol. */
3331
3332 static void
3333 ppc_bs (ignore)
3334 int ignore ATTRIBUTE_UNUSED;
3335 {
3336 char *name;
3337 char endc;
3338 symbolS *csect;
3339 symbolS *sym;
3340
3341 if (ppc_current_block != NULL)
3342 as_bad (_("nested .bs blocks"));
3343
3344 name = input_line_pointer;
3345 endc = get_symbol_end ();
3346
3347 csect = symbol_find_or_make (name);
3348
3349 *input_line_pointer = endc;
3350
3351 sym = symbol_make (".bs");
3352 S_SET_SEGMENT (sym, now_seg);
3353 S_SET_STORAGE_CLASS (sym, C_BSTAT);
3354 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3355 symbol_get_tc (sym)->output = 1;
3356
3357 symbol_get_tc (sym)->within = csect;
3358
3359 ppc_frob_label (sym);
3360
3361 ppc_current_block = sym;
3362
3363 demand_empty_rest_of_line ();
3364 }
3365
3366 /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
3367
3368 static void
3369 ppc_es (ignore)
3370 int ignore ATTRIBUTE_UNUSED;
3371 {
3372 symbolS *sym;
3373
3374 if (ppc_current_block == NULL)
3375 as_bad (_(".es without preceding .bs"));
3376
3377 sym = symbol_make (".es");
3378 S_SET_SEGMENT (sym, now_seg);
3379 S_SET_STORAGE_CLASS (sym, C_ESTAT);
3380 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3381 symbol_get_tc (sym)->output = 1;
3382
3383 ppc_frob_label (sym);
3384
3385 ppc_current_block = NULL;
3386
3387 demand_empty_rest_of_line ();
3388 }
3389
3390 /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
3391 line number. */
3392
3393 static void
3394 ppc_bb (ignore)
3395 int ignore ATTRIBUTE_UNUSED;
3396 {
3397 symbolS *sym;
3398
3399 sym = symbol_make (".bb");
3400 S_SET_SEGMENT (sym, text_section);
3401 symbol_set_frag (sym, frag_now);
3402 S_SET_VALUE (sym, frag_now_fix ());
3403 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3404
3405 S_SET_NUMBER_AUXILIARY (sym, 1);
3406 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3407
3408 symbol_get_tc (sym)->output = 1;
3409
3410 SF_SET_PROCESS (sym);
3411
3412 ppc_frob_label (sym);
3413
3414 demand_empty_rest_of_line ();
3415 }
3416
3417 /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
3418 line number. */
3419
3420 static void
3421 ppc_eb (ignore)
3422 int ignore ATTRIBUTE_UNUSED;
3423 {
3424 symbolS *sym;
3425
3426 sym = symbol_make (".eb");
3427 S_SET_SEGMENT (sym, text_section);
3428 symbol_set_frag (sym, frag_now);
3429 S_SET_VALUE (sym, frag_now_fix ());
3430 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3431 S_SET_NUMBER_AUXILIARY (sym, 1);
3432 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3433 symbol_get_tc (sym)->output = 1;
3434
3435 SF_SET_PROCESS (sym);
3436
3437 ppc_frob_label (sym);
3438
3439 demand_empty_rest_of_line ();
3440 }
3441
3442 /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
3443 specified name. */
3444
3445 static void
3446 ppc_bc (ignore)
3447 int ignore ATTRIBUTE_UNUSED;
3448 {
3449 char *name;
3450 int len;
3451 symbolS *sym;
3452
3453 name = demand_copy_C_string (&len);
3454 sym = symbol_make (name);
3455 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3456 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3457 S_SET_STORAGE_CLASS (sym, C_BCOMM);
3458 S_SET_VALUE (sym, 0);
3459 symbol_get_tc (sym)->output = 1;
3460
3461 ppc_frob_label (sym);
3462
3463 demand_empty_rest_of_line ();
3464 }
3465
3466 /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
3467
3468 static void
3469 ppc_ec (ignore)
3470 int ignore ATTRIBUTE_UNUSED;
3471 {
3472 symbolS *sym;
3473
3474 sym = symbol_make (".ec");
3475 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3476 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3477 S_SET_STORAGE_CLASS (sym, C_ECOMM);
3478 S_SET_VALUE (sym, 0);
3479 symbol_get_tc (sym)->output = 1;
3480
3481 ppc_frob_label (sym);
3482
3483 demand_empty_rest_of_line ();
3484 }
3485
3486 /* The .toc pseudo-op. Switch to the .toc subsegment. */
3487
3488 static void
3489 ppc_toc (ignore)
3490 int ignore ATTRIBUTE_UNUSED;
3491 {
3492 if (ppc_toc_csect != (symbolS *) NULL)
3493 subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
3494 else
3495 {
3496 subsegT subseg;
3497 symbolS *sym;
3498 symbolS *list;
3499
3500 subseg = ppc_data_subsegment;
3501 ++ppc_data_subsegment;
3502
3503 subseg_new (segment_name (data_section), subseg);
3504 ppc_toc_frag = frag_now;
3505
3506 sym = symbol_find_or_make ("TOC[TC0]");
3507 symbol_set_frag (sym, frag_now);
3508 S_SET_SEGMENT (sym, data_section);
3509 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3510 symbol_get_tc (sym)->subseg = subseg;
3511 symbol_get_tc (sym)->output = 1;
3512 symbol_get_tc (sym)->within = sym;
3513
3514 ppc_toc_csect = sym;
3515
3516 for (list = ppc_data_csects;
3517 symbol_get_tc (list)->next != (symbolS *) NULL;
3518 list = symbol_get_tc (list)->next)
3519 ;
3520 symbol_get_tc (list)->next = sym;
3521
3522 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3523 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3524 &symbol_lastP);
3525 }
3526
3527 ppc_current_csect = ppc_toc_csect;
3528
3529 demand_empty_rest_of_line ();
3530 }
3531
3532 /* The AIX assembler automatically aligns the operands of a .long or
3533 .short pseudo-op, and we want to be compatible. */
3534
3535 static void
3536 ppc_xcoff_cons (log_size)
3537 int log_size;
3538 {
3539 frag_align (log_size, 0, 0);
3540 record_alignment (now_seg, log_size);
3541 cons (1 << log_size);
3542 }
3543
3544 static void
3545 ppc_vbyte (dummy)
3546 int dummy ATTRIBUTE_UNUSED;
3547 {
3548 expressionS exp;
3549 int byte_count;
3550
3551 (void) expression (&exp);
3552
3553 if (exp.X_op != O_constant)
3554 {
3555 as_bad (_("non-constant byte count"));
3556 return;
3557 }
3558
3559 byte_count = exp.X_add_number;
3560
3561 if (*input_line_pointer != ',')
3562 {
3563 as_bad (_("missing value"));
3564 return;
3565 }
3566
3567 ++input_line_pointer;
3568 cons (byte_count);
3569 }
3570
3571 #endif /* OBJ_XCOFF */
3572 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
3573 \f
3574 /* The .tc pseudo-op. This is used when generating either XCOFF or
3575 ELF. This takes two or more arguments.
3576
3577 When generating XCOFF output, the first argument is the name to
3578 give to this location in the toc; this will be a symbol with class
3579 TC. The rest of the arguments are N-byte values to actually put at
3580 this location in the TOC; often there is just one more argument, a
3581 relocateable symbol reference. The size of the value to store
3582 depends on target word size. A 32-bit target uses 4-byte values, a
3583 64-bit target uses 8-byte values.
3584
3585 When not generating XCOFF output, the arguments are the same, but
3586 the first argument is simply ignored. */
3587
3588 static void
3589 ppc_tc (ignore)
3590 int ignore ATTRIBUTE_UNUSED;
3591 {
3592 #ifdef OBJ_XCOFF
3593
3594 /* Define the TOC symbol name. */
3595 {
3596 char *name;
3597 char endc;
3598 symbolS *sym;
3599
3600 if (ppc_toc_csect == (symbolS *) NULL
3601 || ppc_toc_csect != ppc_current_csect)
3602 {
3603 as_bad (_(".tc not in .toc section"));
3604 ignore_rest_of_line ();
3605 return;
3606 }
3607
3608 name = input_line_pointer;
3609 endc = get_symbol_end ();
3610
3611 sym = symbol_find_or_make (name);
3612
3613 *input_line_pointer = endc;
3614
3615 if (S_IS_DEFINED (sym))
3616 {
3617 symbolS *label;
3618
3619 label = symbol_get_tc (ppc_current_csect)->within;
3620 if (symbol_get_tc (label)->class != XMC_TC0)
3621 {
3622 as_bad (_(".tc with no label"));
3623 ignore_rest_of_line ();
3624 return;
3625 }
3626
3627 S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
3628 symbol_set_frag (label, symbol_get_frag (sym));
3629 S_SET_VALUE (label, S_GET_VALUE (sym));
3630
3631 while (! is_end_of_line[(unsigned char) *input_line_pointer])
3632 ++input_line_pointer;
3633
3634 return;
3635 }
3636
3637 S_SET_SEGMENT (sym, now_seg);
3638 symbol_set_frag (sym, frag_now);
3639 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3640 symbol_get_tc (sym)->class = XMC_TC;
3641 symbol_get_tc (sym)->output = 1;
3642
3643 ppc_frob_label (sym);
3644 }
3645
3646 #endif /* OBJ_XCOFF */
3647 #ifdef OBJ_ELF
3648 int align;
3649
3650 /* Skip the TOC symbol name. */
3651 while (is_part_of_name (*input_line_pointer)
3652 || *input_line_pointer == '['
3653 || *input_line_pointer == ']'
3654 || *input_line_pointer == '{'
3655 || *input_line_pointer == '}')
3656 ++input_line_pointer;
3657
3658 /* Align to a four/eight byte boundary. */
3659 align = BFD_DEFAULT_TARGET_SIZE == 64 && ppc_size == PPC_OPCODE_64 ? 3 : 2;
3660 frag_align (align, 0, 0);
3661 record_alignment (now_seg, align);
3662 #endif /* OBJ_ELF */
3663
3664 if (*input_line_pointer != ',')
3665 demand_empty_rest_of_line ();
3666 else
3667 {
3668 ++input_line_pointer;
3669 cons ((ppc_size == PPC_OPCODE_64) ? 8 : 4);
3670 }
3671 }
3672
3673 /* Pseudo-op .machine. */
3674 /* FIXME: `.machine' is a nop for the moment. It would be nice to
3675 accept this directive on the first line of input and set ppc_size
3676 and the target format accordingly. Unfortunately, the target
3677 format is selected in output-file.c:output_file_create before we
3678 even get to md_begin, so it's not possible without changing
3679 as.c:main. */
3680
3681 static void
3682 ppc_machine (ignore)
3683 int ignore ATTRIBUTE_UNUSED;
3684 {
3685 discard_rest_of_line ();
3686 }
3687
3688 /* See whether a symbol is in the TOC section. */
3689
3690 static int
3691 ppc_is_toc_sym (sym)
3692 symbolS *sym;
3693 {
3694 #ifdef OBJ_XCOFF
3695 return symbol_get_tc (sym)->class == XMC_TC;
3696 #endif
3697 #ifdef OBJ_ELF
3698 const char *sname = segment_name (S_GET_SEGMENT (sym));
3699 if (BFD_DEFAULT_TARGET_SIZE == 64 && ppc_size == PPC_OPCODE_64)
3700 return strcmp (sname, ".toc") == 0;
3701 else
3702 return strcmp (sname, ".got") == 0;
3703 #endif
3704 }
3705 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
3706 \f
3707 #ifdef TE_PE
3708
3709 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
3710
3711 /* Set the current section. */
3712 static void
3713 ppc_set_current_section (new)
3714 segT new;
3715 {
3716 ppc_previous_section = ppc_current_section;
3717 ppc_current_section = new;
3718 }
3719
3720 /* pseudo-op: .previous
3721 behaviour: toggles the current section with the previous section.
3722 errors: None
3723 warnings: "No previous section" */
3724
3725 static void
3726 ppc_previous (ignore)
3727 int ignore ATTRIBUTE_UNUSED;
3728 {
3729 symbolS *tmp;
3730
3731 if (ppc_previous_section == NULL)
3732 {
3733 as_warn (_("No previous section to return to. Directive ignored."));
3734 return;
3735 }
3736
3737 subseg_set (ppc_previous_section, 0);
3738
3739 ppc_set_current_section (ppc_previous_section);
3740 }
3741
3742 /* pseudo-op: .pdata
3743 behaviour: predefined read only data section
3744 double word aligned
3745 errors: None
3746 warnings: None
3747 initial: .section .pdata "adr3"
3748 a - don't know -- maybe a misprint
3749 d - initialized data
3750 r - readable
3751 3 - double word aligned (that would be 4 byte boundary)
3752
3753 commentary:
3754 Tag index tables (also known as the function table) for exception
3755 handling, debugging, etc. */
3756
3757 static void
3758 ppc_pdata (ignore)
3759 int ignore ATTRIBUTE_UNUSED;
3760 {
3761 if (pdata_section == 0)
3762 {
3763 pdata_section = subseg_new (".pdata", 0);
3764
3765 bfd_set_section_flags (stdoutput, pdata_section,
3766 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3767 | SEC_READONLY | SEC_DATA ));
3768
3769 bfd_set_section_alignment (stdoutput, pdata_section, 2);
3770 }
3771 else
3772 {
3773 pdata_section = subseg_new (".pdata", 0);
3774 }
3775 ppc_set_current_section (pdata_section);
3776 }
3777
3778 /* pseudo-op: .ydata
3779 behaviour: predefined read only data section
3780 double word aligned
3781 errors: None
3782 warnings: None
3783 initial: .section .ydata "drw3"
3784 a - don't know -- maybe a misprint
3785 d - initialized data
3786 r - readable
3787 3 - double word aligned (that would be 4 byte boundary)
3788 commentary:
3789 Tag tables (also known as the scope table) for exception handling,
3790 debugging, etc. */
3791
3792 static void
3793 ppc_ydata (ignore)
3794 int ignore ATTRIBUTE_UNUSED;
3795 {
3796 if (ydata_section == 0)
3797 {
3798 ydata_section = subseg_new (".ydata", 0);
3799 bfd_set_section_flags (stdoutput, ydata_section,
3800 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3801 | SEC_READONLY | SEC_DATA ));
3802
3803 bfd_set_section_alignment (stdoutput, ydata_section, 3);
3804 }
3805 else
3806 {
3807 ydata_section = subseg_new (".ydata", 0);
3808 }
3809 ppc_set_current_section (ydata_section);
3810 }
3811
3812 /* pseudo-op: .reldata
3813 behaviour: predefined read write data section
3814 double word aligned (4-byte)
3815 FIXME: relocation is applied to it
3816 FIXME: what's the difference between this and .data?
3817 errors: None
3818 warnings: None
3819 initial: .section .reldata "drw3"
3820 d - initialized data
3821 r - readable
3822 w - writeable
3823 3 - double word aligned (that would be 8 byte boundary)
3824
3825 commentary:
3826 Like .data, but intended to hold data subject to relocation, such as
3827 function descriptors, etc. */
3828
3829 static void
3830 ppc_reldata (ignore)
3831 int ignore ATTRIBUTE_UNUSED;
3832 {
3833 if (reldata_section == 0)
3834 {
3835 reldata_section = subseg_new (".reldata", 0);
3836
3837 bfd_set_section_flags (stdoutput, reldata_section,
3838 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3839 | SEC_DATA));
3840
3841 bfd_set_section_alignment (stdoutput, reldata_section, 2);
3842 }
3843 else
3844 {
3845 reldata_section = subseg_new (".reldata", 0);
3846 }
3847 ppc_set_current_section (reldata_section);
3848 }
3849
3850 /* pseudo-op: .rdata
3851 behaviour: predefined read only data section
3852 double word aligned
3853 errors: None
3854 warnings: None
3855 initial: .section .rdata "dr3"
3856 d - initialized data
3857 r - readable
3858 3 - double word aligned (that would be 4 byte boundary) */
3859
3860 static void
3861 ppc_rdata (ignore)
3862 int ignore ATTRIBUTE_UNUSED;
3863 {
3864 if (rdata_section == 0)
3865 {
3866 rdata_section = subseg_new (".rdata", 0);
3867 bfd_set_section_flags (stdoutput, rdata_section,
3868 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
3869 | SEC_READONLY | SEC_DATA ));
3870
3871 bfd_set_section_alignment (stdoutput, rdata_section, 2);
3872 }
3873 else
3874 {
3875 rdata_section = subseg_new (".rdata", 0);
3876 }
3877 ppc_set_current_section (rdata_section);
3878 }
3879
3880 /* pseudo-op: .ualong
3881 behaviour: much like .int, with the exception that no alignment is
3882 performed.
3883 FIXME: test the alignment statement
3884 errors: None
3885 warnings: None */
3886
3887 static void
3888 ppc_ualong (ignore)
3889 int ignore ATTRIBUTE_UNUSED;
3890 {
3891 /* Try for long. */
3892 cons (4);
3893 }
3894
3895 /* pseudo-op: .znop <symbol name>
3896 behaviour: Issue a nop instruction
3897 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
3898 the supplied symbol name.
3899 errors: None
3900 warnings: Missing symbol name */
3901
3902 static void
3903 ppc_znop (ignore)
3904 int ignore ATTRIBUTE_UNUSED;
3905 {
3906 unsigned long insn;
3907 const struct powerpc_opcode *opcode;
3908 expressionS ex;
3909 char *f;
3910 symbolS *sym;
3911 char *symbol_name;
3912 char c;
3913 char *name;
3914 unsigned int exp;
3915 flagword flags;
3916 asection *sec;
3917
3918 /* Strip out the symbol name. */
3919 symbol_name = input_line_pointer;
3920 c = get_symbol_end ();
3921
3922 name = xmalloc (input_line_pointer - symbol_name + 1);
3923 strcpy (name, symbol_name);
3924
3925 sym = symbol_find_or_make (name);
3926
3927 *input_line_pointer = c;
3928
3929 SKIP_WHITESPACE ();
3930
3931 /* Look up the opcode in the hash table. */
3932 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop");
3933
3934 /* Stick in the nop. */
3935 insn = opcode->opcode;
3936
3937 /* Write out the instruction. */
3938 f = frag_more (4);
3939 md_number_to_chars (f, insn, 4);
3940 fix_new (frag_now,
3941 f - frag_now->fr_literal,
3942 4,
3943 sym,
3944 0,
3945 0,
3946 BFD_RELOC_16_GOT_PCREL);
3947
3948 }
3949
3950 /* pseudo-op:
3951 behaviour:
3952 errors:
3953 warnings: */
3954
3955 static void
3956 ppc_pe_comm (lcomm)
3957 int lcomm;
3958 {
3959 register char *name;
3960 register char c;
3961 register char *p;
3962 offsetT temp;
3963 register symbolS *symbolP;
3964 offsetT align;
3965
3966 name = input_line_pointer;
3967 c = get_symbol_end ();
3968
3969 /* just after name is now '\0'. */
3970 p = input_line_pointer;
3971 *p = c;
3972 SKIP_WHITESPACE ();
3973 if (*input_line_pointer != ',')
3974 {
3975 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
3976 ignore_rest_of_line ();
3977 return;
3978 }
3979
3980 input_line_pointer++; /* skip ',' */
3981 if ((temp = get_absolute_expression ()) < 0)
3982 {
3983 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
3984 ignore_rest_of_line ();
3985 return;
3986 }
3987
3988 if (! lcomm)
3989 {
3990 /* The third argument to .comm is the alignment. */
3991 if (*input_line_pointer != ',')
3992 align = 3;
3993 else
3994 {
3995 ++input_line_pointer;
3996 align = get_absolute_expression ();
3997 if (align <= 0)
3998 {
3999 as_warn (_("ignoring bad alignment"));
4000 align = 3;
4001 }
4002 }
4003 }
4004
4005 *p = 0;
4006 symbolP = symbol_find_or_make (name);
4007
4008 *p = c;
4009 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
4010 {
4011 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
4012 S_GET_NAME (symbolP));
4013 ignore_rest_of_line ();
4014 return;
4015 }
4016
4017 if (S_GET_VALUE (symbolP))
4018 {
4019 if (S_GET_VALUE (symbolP) != (valueT) temp)
4020 as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
4021 S_GET_NAME (symbolP),
4022 (long) S_GET_VALUE (symbolP),
4023 (long) temp);
4024 }
4025 else
4026 {
4027 S_SET_VALUE (symbolP, (valueT) temp);
4028 S_SET_EXTERNAL (symbolP);
4029 }
4030
4031 demand_empty_rest_of_line ();
4032 }
4033
4034 /*
4035 * implement the .section pseudo op:
4036 * .section name {, "flags"}
4037 * ^ ^
4038 * | +--- optional flags: 'b' for bss
4039 * | 'i' for info
4040 * +-- section name 'l' for lib
4041 * 'n' for noload
4042 * 'o' for over
4043 * 'w' for data
4044 * 'd' (apparently m88k for data)
4045 * 'x' for text
4046 * But if the argument is not a quoted string, treat it as a
4047 * subsegment number.
4048 *
4049 * FIXME: this is a copy of the section processing from obj-coff.c, with
4050 * additions/changes for the moto-pas assembler support. There are three
4051 * categories:
4052 *
4053 * FIXME: I just noticed this. This doesn't work at all really. It it
4054 * setting bits that bfd probably neither understands or uses. The
4055 * correct approach (?) will have to incorporate extra fields attached
4056 * to the section to hold the system specific stuff. (krk)
4057 *
4058 * Section Contents:
4059 * 'a' - unknown - referred to in documentation, but no definition supplied
4060 * 'c' - section has code
4061 * 'd' - section has initialized data
4062 * 'u' - section has uninitialized data
4063 * 'i' - section contains directives (info)
4064 * 'n' - section can be discarded
4065 * 'R' - remove section at link time
4066 *
4067 * Section Protection:
4068 * 'r' - section is readable
4069 * 'w' - section is writeable
4070 * 'x' - section is executable
4071 * 's' - section is sharable
4072 *
4073 * Section Alignment:
4074 * '0' - align to byte boundary
4075 * '1' - align to halfword undary
4076 * '2' - align to word boundary
4077 * '3' - align to doubleword boundary
4078 * '4' - align to quadword boundary
4079 * '5' - align to 32 byte boundary
4080 * '6' - align to 64 byte boundary
4081 *
4082 */
4083
4084 void
4085 ppc_pe_section (ignore)
4086 int ignore ATTRIBUTE_UNUSED;
4087 {
4088 /* Strip out the section name. */
4089 char *section_name;
4090 char c;
4091 char *name;
4092 unsigned int exp;
4093 flagword flags;
4094 segT sec;
4095 int align;
4096
4097 section_name = input_line_pointer;
4098 c = get_symbol_end ();
4099
4100 name = xmalloc (input_line_pointer - section_name + 1);
4101 strcpy (name, section_name);
4102
4103 *input_line_pointer = c;
4104
4105 SKIP_WHITESPACE ();
4106
4107 exp = 0;
4108 flags = SEC_NO_FLAGS;
4109
4110 if (strcmp (name, ".idata$2") == 0)
4111 {
4112 align = 0;
4113 }
4114 else if (strcmp (name, ".idata$3") == 0)
4115 {
4116 align = 0;
4117 }
4118 else if (strcmp (name, ".idata$4") == 0)
4119 {
4120 align = 2;
4121 }
4122 else if (strcmp (name, ".idata$5") == 0)
4123 {
4124 align = 2;
4125 }
4126 else if (strcmp (name, ".idata$6") == 0)
4127 {
4128 align = 1;
4129 }
4130 else
4131 /* Default alignment to 16 byte boundary. */
4132 align = 4;
4133
4134 if (*input_line_pointer == ',')
4135 {
4136 ++input_line_pointer;
4137 SKIP_WHITESPACE ();
4138 if (*input_line_pointer != '"')
4139 exp = get_absolute_expression ();
4140 else
4141 {
4142 ++input_line_pointer;
4143 while (*input_line_pointer != '"'
4144 && ! is_end_of_line[(unsigned char) *input_line_pointer])
4145 {
4146 switch (*input_line_pointer)
4147 {
4148 /* Section Contents */
4149 case 'a': /* unknown */
4150 as_bad (_("Unsupported section attribute -- 'a'"));
4151 break;
4152 case 'c': /* code section */
4153 flags |= SEC_CODE;
4154 break;
4155 case 'd': /* section has initialized data */
4156 flags |= SEC_DATA;
4157 break;
4158 case 'u': /* section has uninitialized data */
4159 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
4160 in winnt.h */
4161 flags |= SEC_ROM;
4162 break;
4163 case 'i': /* section contains directives (info) */
4164 /* FIXME: This is IMAGE_SCN_LNK_INFO
4165 in winnt.h */
4166 flags |= SEC_HAS_CONTENTS;
4167 break;
4168 case 'n': /* section can be discarded */
4169 flags &=~ SEC_LOAD;
4170 break;
4171 case 'R': /* Remove section at link time */
4172 flags |= SEC_NEVER_LOAD;
4173 break;
4174
4175 /* Section Protection */
4176 case 'r': /* section is readable */
4177 flags |= IMAGE_SCN_MEM_READ;
4178 break;
4179 case 'w': /* section is writeable */
4180 flags |= IMAGE_SCN_MEM_WRITE;
4181 break;
4182 case 'x': /* section is executable */
4183 flags |= IMAGE_SCN_MEM_EXECUTE;
4184 break;
4185 case 's': /* section is sharable */
4186 flags |= IMAGE_SCN_MEM_SHARED;
4187 break;
4188
4189 /* Section Alignment */
4190 case '0': /* align to byte boundary */
4191 flags |= IMAGE_SCN_ALIGN_1BYTES;
4192 align = 0;
4193 break;
4194 case '1': /* align to halfword boundary */
4195 flags |= IMAGE_SCN_ALIGN_2BYTES;
4196 align = 1;
4197 break;
4198 case '2': /* align to word boundary */
4199 flags |= IMAGE_SCN_ALIGN_4BYTES;
4200 align = 2;
4201 break;
4202 case '3': /* align to doubleword boundary */
4203 flags |= IMAGE_SCN_ALIGN_8BYTES;
4204 align = 3;
4205 break;
4206 case '4': /* align to quadword boundary */
4207 flags |= IMAGE_SCN_ALIGN_16BYTES;
4208 align = 4;
4209 break;
4210 case '5': /* align to 32 byte boundary */
4211 flags |= IMAGE_SCN_ALIGN_32BYTES;
4212 align = 5;
4213 break;
4214 case '6': /* align to 64 byte boundary */
4215 flags |= IMAGE_SCN_ALIGN_64BYTES;
4216 align = 6;
4217 break;
4218
4219 default:
4220 as_bad (_("unknown section attribute '%c'"),
4221 *input_line_pointer);
4222 break;
4223 }
4224 ++input_line_pointer;
4225 }
4226 if (*input_line_pointer == '"')
4227 ++input_line_pointer;
4228 }
4229 }
4230
4231 sec = subseg_new (name, (subsegT) exp);
4232
4233 ppc_set_current_section (sec);
4234
4235 if (flags != SEC_NO_FLAGS)
4236 {
4237 if (! bfd_set_section_flags (stdoutput, sec, flags))
4238 as_bad (_("error setting flags for \"%s\": %s"),
4239 bfd_section_name (stdoutput, sec),
4240 bfd_errmsg (bfd_get_error ()));
4241 }
4242
4243 bfd_set_section_alignment (stdoutput, sec, align);
4244
4245 }
4246
4247 static void
4248 ppc_pe_function (ignore)
4249 int ignore ATTRIBUTE_UNUSED;
4250 {
4251 char *name;
4252 char endc;
4253 symbolS *ext_sym;
4254
4255 name = input_line_pointer;
4256 endc = get_symbol_end ();
4257
4258 ext_sym = symbol_find_or_make (name);
4259
4260 *input_line_pointer = endc;
4261
4262 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
4263 SF_SET_FUNCTION (ext_sym);
4264 SF_SET_PROCESS (ext_sym);
4265 coff_add_linesym (ext_sym);
4266
4267 demand_empty_rest_of_line ();
4268 }
4269
4270 static void
4271 ppc_pe_tocd (ignore)
4272 int ignore ATTRIBUTE_UNUSED;
4273 {
4274 if (tocdata_section == 0)
4275 {
4276 tocdata_section = subseg_new (".tocd", 0);
4277 /* FIXME: section flags won't work. */
4278 bfd_set_section_flags (stdoutput, tocdata_section,
4279 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4280 | SEC_READONLY | SEC_DATA));
4281
4282 bfd_set_section_alignment (stdoutput, tocdata_section, 2);
4283 }
4284 else
4285 {
4286 rdata_section = subseg_new (".tocd", 0);
4287 }
4288
4289 ppc_set_current_section (tocdata_section);
4290
4291 demand_empty_rest_of_line ();
4292 }
4293
4294 /* Don't adjust TOC relocs to use the section symbol. */
4295
4296 int
4297 ppc_pe_fix_adjustable (fix)
4298 fixS *fix;
4299 {
4300 return fix->fx_r_type != BFD_RELOC_PPC_TOC16;
4301 }
4302
4303 #endif
4304 \f
4305 #ifdef OBJ_XCOFF
4306
4307 /* XCOFF specific symbol and file handling. */
4308
4309 /* Canonicalize the symbol name. We use the to force the suffix, if
4310 any, to use square brackets, and to be in upper case. */
4311
4312 char *
4313 ppc_canonicalize_symbol_name (name)
4314 char *name;
4315 {
4316 char *s;
4317
4318 if (ppc_stab_symbol)
4319 return name;
4320
4321 for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
4322 ;
4323 if (*s != '\0')
4324 {
4325 char brac;
4326
4327 if (*s == '[')
4328 brac = ']';
4329 else
4330 {
4331 *s = '[';
4332 brac = '}';
4333 }
4334
4335 for (s++; *s != '\0' && *s != brac; s++)
4336 *s = TOUPPER (*s);
4337
4338 if (*s == '\0' || s[1] != '\0')
4339 as_bad (_("bad symbol suffix"));
4340
4341 *s = ']';
4342 }
4343
4344 return name;
4345 }
4346
4347 /* Set the class of a symbol based on the suffix, if any. This is
4348 called whenever a new symbol is created. */
4349
4350 void
4351 ppc_symbol_new_hook (sym)
4352 symbolS *sym;
4353 {
4354 struct ppc_tc_sy *tc;
4355 const char *s;
4356
4357 tc = symbol_get_tc (sym);
4358 tc->next = NULL;
4359 tc->output = 0;
4360 tc->class = -1;
4361 tc->real_name = NULL;
4362 tc->subseg = 0;
4363 tc->align = 0;
4364 tc->size = NULL;
4365 tc->within = NULL;
4366
4367 if (ppc_stab_symbol)
4368 return;
4369
4370 s = strchr (S_GET_NAME (sym), '[');
4371 if (s == (const char *) NULL)
4372 {
4373 /* There is no suffix. */
4374 return;
4375 }
4376
4377 ++s;
4378
4379 switch (s[0])
4380 {
4381 case 'B':
4382 if (strcmp (s, "BS]") == 0)
4383 tc->class = XMC_BS;
4384 break;
4385 case 'D':
4386 if (strcmp (s, "DB]") == 0)
4387 tc->class = XMC_DB;
4388 else if (strcmp (s, "DS]") == 0)
4389 tc->class = XMC_DS;
4390 break;
4391 case 'G':
4392 if (strcmp (s, "GL]") == 0)
4393 tc->class = XMC_GL;
4394 break;
4395 case 'P':
4396 if (strcmp (s, "PR]") == 0)
4397 tc->class = XMC_PR;
4398 break;
4399 case 'R':
4400 if (strcmp (s, "RO]") == 0)
4401 tc->class = XMC_RO;
4402 else if (strcmp (s, "RW]") == 0)
4403 tc->class = XMC_RW;
4404 break;
4405 case 'S':
4406 if (strcmp (s, "SV]") == 0)
4407 tc->class = XMC_SV;
4408 break;
4409 case 'T':
4410 if (strcmp (s, "TC]") == 0)
4411 tc->class = XMC_TC;
4412 else if (strcmp (s, "TI]") == 0)
4413 tc->class = XMC_TI;
4414 else if (strcmp (s, "TB]") == 0)
4415 tc->class = XMC_TB;
4416 else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
4417 tc->class = XMC_TC0;
4418 break;
4419 case 'U':
4420 if (strcmp (s, "UA]") == 0)
4421 tc->class = XMC_UA;
4422 else if (strcmp (s, "UC]") == 0)
4423 tc->class = XMC_UC;
4424 break;
4425 case 'X':
4426 if (strcmp (s, "XO]") == 0)
4427 tc->class = XMC_XO;
4428 break;
4429 }
4430
4431 if (tc->class == -1)
4432 as_bad (_("Unrecognized symbol suffix"));
4433 }
4434
4435 /* Set the class of a label based on where it is defined. This
4436 handles symbols without suffixes. Also, move the symbol so that it
4437 follows the csect symbol. */
4438
4439 void
4440 ppc_frob_label (sym)
4441 symbolS *sym;
4442 {
4443 if (ppc_current_csect != (symbolS *) NULL)
4444 {
4445 if (symbol_get_tc (sym)->class == -1)
4446 symbol_get_tc (sym)->class = symbol_get_tc (ppc_current_csect)->class;
4447
4448 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
4449 symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
4450 &symbol_rootP, &symbol_lastP);
4451 symbol_get_tc (ppc_current_csect)->within = sym;
4452 }
4453 }
4454
4455 /* This variable is set by ppc_frob_symbol if any absolute symbols are
4456 seen. It tells ppc_adjust_symtab whether it needs to look through
4457 the symbols. */
4458
4459 static boolean ppc_saw_abs;
4460
4461 /* Change the name of a symbol just before writing it out. Set the
4462 real name if the .rename pseudo-op was used. Otherwise, remove any
4463 class suffix. Return 1 if the symbol should not be included in the
4464 symbol table. */
4465
4466 int
4467 ppc_frob_symbol (sym)
4468 symbolS *sym;
4469 {
4470 static symbolS *ppc_last_function;
4471 static symbolS *set_end;
4472
4473 /* Discard symbols that should not be included in the output symbol
4474 table. */
4475 if (! symbol_used_in_reloc_p (sym)
4476 && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
4477 || (! S_IS_EXTERNAL (sym)
4478 && ! symbol_get_tc (sym)->output
4479 && S_GET_STORAGE_CLASS (sym) != C_FILE)))
4480 return 1;
4481
4482 if (symbol_get_tc (sym)->real_name != (char *) NULL)
4483 S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
4484 else
4485 {
4486 const char *name;
4487 const char *s;
4488
4489 name = S_GET_NAME (sym);
4490 s = strchr (name, '[');
4491 if (s != (char *) NULL)
4492 {
4493 unsigned int len;
4494 char *snew;
4495
4496 len = s - name;
4497 snew = xmalloc (len + 1);
4498 memcpy (snew, name, len);
4499 snew[len] = '\0';
4500
4501 S_SET_NAME (sym, snew);
4502 }
4503 }
4504
4505 if (set_end != (symbolS *) NULL)
4506 {
4507 SA_SET_SYM_ENDNDX (set_end, sym);
4508 set_end = NULL;
4509 }
4510
4511 if (SF_GET_FUNCTION (sym))
4512 {
4513 if (ppc_last_function != (symbolS *) NULL)
4514 as_bad (_("two .function pseudo-ops with no intervening .ef"));
4515 ppc_last_function = sym;
4516 if (symbol_get_tc (sym)->size != (symbolS *) NULL)
4517 {
4518 resolve_symbol_value (symbol_get_tc (sym)->size);
4519 SA_SET_SYM_FSIZE (sym,
4520 (long) S_GET_VALUE (symbol_get_tc (sym)->size));
4521 }
4522 }
4523 else if (S_GET_STORAGE_CLASS (sym) == C_FCN
4524 && strcmp (S_GET_NAME (sym), ".ef") == 0)
4525 {
4526 if (ppc_last_function == (symbolS *) NULL)
4527 as_bad (_(".ef with no preceding .function"));
4528 else
4529 {
4530 set_end = ppc_last_function;
4531 ppc_last_function = NULL;
4532
4533 /* We don't have a C_EFCN symbol, but we need to force the
4534 COFF backend to believe that it has seen one. */
4535 coff_last_function = NULL;
4536 }
4537 }
4538
4539 if (! S_IS_EXTERNAL (sym)
4540 && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
4541 && S_GET_STORAGE_CLASS (sym) != C_FILE
4542 && S_GET_STORAGE_CLASS (sym) != C_FCN
4543 && S_GET_STORAGE_CLASS (sym) != C_BLOCK
4544 && S_GET_STORAGE_CLASS (sym) != C_BSTAT
4545 && S_GET_STORAGE_CLASS (sym) != C_ESTAT
4546 && S_GET_STORAGE_CLASS (sym) != C_BINCL
4547 && S_GET_STORAGE_CLASS (sym) != C_EINCL
4548 && S_GET_SEGMENT (sym) != ppc_coff_debug_section)
4549 S_SET_STORAGE_CLASS (sym, C_HIDEXT);
4550
4551 if (S_GET_STORAGE_CLASS (sym) == C_EXT
4552 || S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
4553 {
4554 int i;
4555 union internal_auxent *a;
4556
4557 /* Create a csect aux. */
4558 i = S_GET_NUMBER_AUXILIARY (sym);
4559 S_SET_NUMBER_AUXILIARY (sym, i + 1);
4560 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent;
4561 if (symbol_get_tc (sym)->class == XMC_TC0)
4562 {
4563 /* This is the TOC table. */
4564 know (strcmp (S_GET_NAME (sym), "TOC") == 0);
4565 a->x_csect.x_scnlen.l = 0;
4566 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
4567 }
4568 else if (symbol_get_tc (sym)->subseg != 0)
4569 {
4570 /* This is a csect symbol. x_scnlen is the size of the
4571 csect. */
4572 if (symbol_get_tc (sym)->next == (symbolS *) NULL)
4573 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4574 S_GET_SEGMENT (sym))
4575 - S_GET_VALUE (sym));
4576 else
4577 {
4578 resolve_symbol_value (symbol_get_tc (sym)->next);
4579 a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next)
4580 - S_GET_VALUE (sym));
4581 }
4582 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD;
4583 }
4584 else if (S_GET_SEGMENT (sym) == bss_section)
4585 {
4586 /* This is a common symbol. */
4587 a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset;
4588 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM;
4589 if (S_IS_EXTERNAL (sym))
4590 symbol_get_tc (sym)->class = XMC_RW;
4591 else
4592 symbol_get_tc (sym)->class = XMC_BS;
4593 }
4594 else if (S_GET_SEGMENT (sym) == absolute_section)
4595 {
4596 /* This is an absolute symbol. The csect will be created by
4597 ppc_adjust_symtab. */
4598 ppc_saw_abs = true;
4599 a->x_csect.x_smtyp = XTY_LD;
4600 if (symbol_get_tc (sym)->class == -1)
4601 symbol_get_tc (sym)->class = XMC_XO;
4602 }
4603 else if (! S_IS_DEFINED (sym))
4604 {
4605 /* This is an external symbol. */
4606 a->x_csect.x_scnlen.l = 0;
4607 a->x_csect.x_smtyp = XTY_ER;
4608 }
4609 else if (symbol_get_tc (sym)->class == XMC_TC)
4610 {
4611 symbolS *next;
4612
4613 /* This is a TOC definition. x_scnlen is the size of the
4614 TOC entry. */
4615 next = symbol_next (sym);
4616 while (symbol_get_tc (next)->class == XMC_TC0)
4617 next = symbol_next (next);
4618 if (next == (symbolS *) NULL
4619 || symbol_get_tc (next)->class != XMC_TC)
4620 {
4621 if (ppc_after_toc_frag == (fragS *) NULL)
4622 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4623 data_section)
4624 - S_GET_VALUE (sym));
4625 else
4626 a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address
4627 - S_GET_VALUE (sym));
4628 }
4629 else
4630 {
4631 resolve_symbol_value (next);
4632 a->x_csect.x_scnlen.l = (S_GET_VALUE (next)
4633 - S_GET_VALUE (sym));
4634 }
4635 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
4636 }
4637 else
4638 {
4639 symbolS *csect;
4640
4641 /* This is a normal symbol definition. x_scnlen is the
4642 symbol index of the containing csect. */
4643 if (S_GET_SEGMENT (sym) == text_section)
4644 csect = ppc_text_csects;
4645 else if (S_GET_SEGMENT (sym) == data_section)
4646 csect = ppc_data_csects;
4647 else
4648 abort ();
4649
4650 /* Skip the initial dummy symbol. */
4651 csect = symbol_get_tc (csect)->next;
4652
4653 if (csect == (symbolS *) NULL)
4654 {
4655 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
4656 a->x_csect.x_scnlen.l = 0;
4657 }
4658 else
4659 {
4660 while (symbol_get_tc (csect)->next != (symbolS *) NULL)
4661 {
4662 resolve_symbol_value (symbol_get_tc (csect)->next);
4663 if (S_GET_VALUE (symbol_get_tc (csect)->next)
4664 > S_GET_VALUE (sym))
4665 break;
4666 csect = symbol_get_tc (csect)->next;
4667 }
4668
4669 a->x_csect.x_scnlen.p =
4670 coffsymbol (symbol_get_bfdsym (csect))->native;
4671 coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen =
4672 1;
4673 }
4674 a->x_csect.x_smtyp = XTY_LD;
4675 }
4676
4677 a->x_csect.x_parmhash = 0;
4678 a->x_csect.x_snhash = 0;
4679 if (symbol_get_tc (sym)->class == -1)
4680 a->x_csect.x_smclas = XMC_PR;
4681 else
4682 a->x_csect.x_smclas = symbol_get_tc (sym)->class;
4683 a->x_csect.x_stab = 0;
4684 a->x_csect.x_snstab = 0;
4685
4686 /* Don't let the COFF backend resort these symbols. */
4687 symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
4688 }
4689 else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
4690 {
4691 /* We want the value to be the symbol index of the referenced
4692 csect symbol. BFD will do that for us if we set the right
4693 flags. */
4694 S_SET_VALUE (sym,
4695 ((valueT)
4696 coffsymbol (symbol_get_bfdsym
4697 (symbol_get_tc (sym)->within))->native));
4698 coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
4699 }
4700 else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
4701 {
4702 symbolS *block;
4703 symbolS *csect;
4704
4705 /* The value is the offset from the enclosing csect. */
4706 block = symbol_get_tc (sym)->within;
4707 csect = symbol_get_tc (block)->within;
4708 resolve_symbol_value (csect);
4709 S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect));
4710 }
4711 else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
4712 || S_GET_STORAGE_CLASS (sym) == C_EINCL)
4713 {
4714 /* We want the value to be a file offset into the line numbers.
4715 BFD will do that for us if we set the right flags. We have
4716 already set the value correctly. */
4717 coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
4718 }
4719
4720 return 0;
4721 }
4722
4723 /* Adjust the symbol table. This creates csect symbols for all
4724 absolute symbols. */
4725
4726 void
4727 ppc_adjust_symtab ()
4728 {
4729 symbolS *sym;
4730
4731 if (! ppc_saw_abs)
4732 return;
4733
4734 for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
4735 {
4736 symbolS *csect;
4737 int i;
4738 union internal_auxent *a;
4739
4740 if (S_GET_SEGMENT (sym) != absolute_section)
4741 continue;
4742
4743 csect = symbol_create (".abs[XO]", absolute_section,
4744 S_GET_VALUE (sym), &zero_address_frag);
4745 symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
4746 S_SET_STORAGE_CLASS (csect, C_HIDEXT);
4747 i = S_GET_NUMBER_AUXILIARY (csect);
4748 S_SET_NUMBER_AUXILIARY (csect, i + 1);
4749 a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent;
4750 a->x_csect.x_scnlen.l = 0;
4751 a->x_csect.x_smtyp = XTY_SD;
4752 a->x_csect.x_parmhash = 0;
4753 a->x_csect.x_snhash = 0;
4754 a->x_csect.x_smclas = XMC_XO;
4755 a->x_csect.x_stab = 0;
4756 a->x_csect.x_snstab = 0;
4757
4758 symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
4759
4760 i = S_GET_NUMBER_AUXILIARY (sym);
4761 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent;
4762 a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native;
4763 coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1;
4764 }
4765
4766 ppc_saw_abs = false;
4767 }
4768
4769 /* Set the VMA for a section. This is called on all the sections in
4770 turn. */
4771
4772 void
4773 ppc_frob_section (sec)
4774 asection *sec;
4775 {
4776 static bfd_size_type vma = 0;
4777
4778 bfd_set_section_vma (stdoutput, sec, vma);
4779 vma += bfd_section_size (stdoutput, sec);
4780 }
4781
4782 #endif /* OBJ_XCOFF */
4783 \f
4784 /* Turn a string in input_line_pointer into a floating point constant
4785 of type TYPE, and store the appropriate bytes in *LITP. The number
4786 of LITTLENUMS emitted is stored in *SIZEP. An error message is
4787 returned, or NULL on OK. */
4788
4789 char *
4790 md_atof (type, litp, sizep)
4791 int type;
4792 char *litp;
4793 int *sizep;
4794 {
4795 int prec;
4796 LITTLENUM_TYPE words[4];
4797 char *t;
4798 int i;
4799
4800 switch (type)
4801 {
4802 case 'f':
4803 prec = 2;
4804 break;
4805
4806 case 'd':
4807 prec = 4;
4808 break;
4809
4810 default:
4811 *sizep = 0;
4812 return _("bad call to md_atof");
4813 }
4814
4815 t = atof_ieee (input_line_pointer, type, words);
4816 if (t)
4817 input_line_pointer = t;
4818
4819 *sizep = prec * 2;
4820
4821 if (target_big_endian)
4822 {
4823 for (i = 0; i < prec; i++)
4824 {
4825 md_number_to_chars (litp, (valueT) words[i], 2);
4826 litp += 2;
4827 }
4828 }
4829 else
4830 {
4831 for (i = prec - 1; i >= 0; i--)
4832 {
4833 md_number_to_chars (litp, (valueT) words[i], 2);
4834 litp += 2;
4835 }
4836 }
4837
4838 return NULL;
4839 }
4840
4841 /* Write a value out to the object file, using the appropriate
4842 endianness. */
4843
4844 void
4845 md_number_to_chars (buf, val, n)
4846 char *buf;
4847 valueT val;
4848 int n;
4849 {
4850 if (target_big_endian)
4851 number_to_chars_bigendian (buf, val, n);
4852 else
4853 number_to_chars_littleendian (buf, val, n);
4854 }
4855
4856 /* Align a section (I don't know why this is machine dependent). */
4857
4858 valueT
4859 md_section_align (seg, addr)
4860 asection *seg;
4861 valueT addr;
4862 {
4863 int align = bfd_get_section_alignment (stdoutput, seg);
4864
4865 return ((addr + (1 << align) - 1) & (-1 << align));
4866 }
4867
4868 /* We don't have any form of relaxing. */
4869
4870 int
4871 md_estimate_size_before_relax (fragp, seg)
4872 fragS *fragp ATTRIBUTE_UNUSED;
4873 asection *seg ATTRIBUTE_UNUSED;
4874 {
4875 abort ();
4876 return 0;
4877 }
4878
4879 /* Convert a machine dependent frag. We never generate these. */
4880
4881 void
4882 md_convert_frag (abfd, sec, fragp)
4883 bfd *abfd ATTRIBUTE_UNUSED;
4884 asection *sec ATTRIBUTE_UNUSED;
4885 fragS *fragp ATTRIBUTE_UNUSED;
4886 {
4887 abort ();
4888 }
4889
4890 /* We have no need to default values of symbols. */
4891
4892 symbolS *
4893 md_undefined_symbol (name)
4894 char *name ATTRIBUTE_UNUSED;
4895 {
4896 return 0;
4897 }
4898 \f
4899 /* Functions concerning relocs. */
4900
4901 /* The location from which a PC relative jump should be calculated,
4902 given a PC relative reloc. */
4903
4904 long
4905 md_pcrel_from_section (fixp, sec)
4906 fixS *fixp;
4907 segT sec ATTRIBUTE_UNUSED;
4908 {
4909 return fixp->fx_frag->fr_address + fixp->fx_where;
4910 }
4911
4912 #ifdef OBJ_XCOFF
4913
4914 /* This is called to see whether a fixup should be adjusted to use a
4915 section symbol. We take the opportunity to change a fixup against
4916 a symbol in the TOC subsegment into a reloc against the
4917 corresponding .tc symbol. */
4918
4919 int
4920 ppc_fix_adjustable (fix)
4921 fixS *fix;
4922 {
4923 valueT val;
4924
4925 resolve_symbol_value (fix->fx_addsy);
4926 val = S_GET_VALUE (fix->fx_addsy);
4927 if (ppc_toc_csect != (symbolS *) NULL
4928 && fix->fx_addsy != (symbolS *) NULL
4929 && fix->fx_addsy != ppc_toc_csect
4930 && S_GET_SEGMENT (fix->fx_addsy) == data_section
4931 && val >= ppc_toc_frag->fr_address
4932 && (ppc_after_toc_frag == (fragS *) NULL
4933 || val < ppc_after_toc_frag->fr_address))
4934 {
4935 symbolS *sy;
4936
4937 for (sy = symbol_next (ppc_toc_csect);
4938 sy != (symbolS *) NULL;
4939 sy = symbol_next (sy))
4940 {
4941 if (symbol_get_tc (sy)->class == XMC_TC0)
4942 continue;
4943 if (symbol_get_tc (sy)->class != XMC_TC)
4944 break;
4945 resolve_symbol_value (sy);
4946 if (val == S_GET_VALUE (sy))
4947 {
4948 fix->fx_addsy = sy;
4949 fix->fx_addnumber = val - ppc_toc_frag->fr_address;
4950 return 0;
4951 }
4952 }
4953
4954 as_bad_where (fix->fx_file, fix->fx_line,
4955 _("symbol in .toc does not match any .tc"));
4956 }
4957
4958 /* Possibly adjust the reloc to be against the csect. */
4959 if (fix->fx_addsy != (symbolS *) NULL
4960 && symbol_get_tc (fix->fx_addsy)->subseg == 0
4961 && symbol_get_tc (fix->fx_addsy)->class != XMC_TC0
4962 && symbol_get_tc (fix->fx_addsy)->class != XMC_TC
4963 && S_GET_SEGMENT (fix->fx_addsy) != bss_section
4964 /* Don't adjust if this is a reloc in the toc section. */
4965 && (S_GET_SEGMENT (fix->fx_addsy) != data_section
4966 || ppc_toc_csect == NULL
4967 || val < ppc_toc_frag->fr_address
4968 || (ppc_after_toc_frag != NULL
4969 && val >= ppc_after_toc_frag->fr_address)))
4970 {
4971 symbolS *csect;
4972
4973 if (S_GET_SEGMENT (fix->fx_addsy) == text_section)
4974 csect = ppc_text_csects;
4975 else if (S_GET_SEGMENT (fix->fx_addsy) == data_section)
4976 csect = ppc_data_csects;
4977 else
4978 abort ();
4979
4980 /* Skip the initial dummy symbol. */
4981 csect = symbol_get_tc (csect)->next;
4982
4983 if (csect != (symbolS *) NULL)
4984 {
4985 while (symbol_get_tc (csect)->next != (symbolS *) NULL
4986 && (symbol_get_frag (symbol_get_tc (csect)->next)->fr_address
4987 <= val))
4988 {
4989 /* If the csect address equals the symbol value, then we
4990 have to look through the full symbol table to see
4991 whether this is the csect we want. Note that we will
4992 only get here if the csect has zero length. */
4993 if ((symbol_get_frag (csect)->fr_address == val)
4994 && S_GET_VALUE (csect) == S_GET_VALUE (fix->fx_addsy))
4995 {
4996 symbolS *scan;
4997
4998 for (scan = symbol_next (csect);
4999 scan != NULL;
5000 scan = symbol_next (scan))
5001 {
5002 if (symbol_get_tc (scan)->subseg != 0)
5003 break;
5004 if (scan == fix->fx_addsy)
5005 break;
5006 }
5007
5008 /* If we found the symbol before the next csect
5009 symbol, then this is the csect we want. */
5010 if (scan == fix->fx_addsy)
5011 break;
5012 }
5013
5014 csect = symbol_get_tc (csect)->next;
5015 }
5016
5017 fix->fx_offset += (S_GET_VALUE (fix->fx_addsy)
5018 - symbol_get_frag (csect)->fr_address);
5019 fix->fx_addsy = csect;
5020 }
5021 }
5022
5023 /* Adjust a reloc against a .lcomm symbol to be against the base
5024 .lcomm. */
5025 if (fix->fx_addsy != (symbolS *) NULL
5026 && S_GET_SEGMENT (fix->fx_addsy) == bss_section
5027 && ! S_IS_EXTERNAL (fix->fx_addsy))
5028 {
5029 resolve_symbol_value (symbol_get_frag (fix->fx_addsy)->fr_symbol);
5030 fix->fx_offset +=
5031 (S_GET_VALUE (fix->fx_addsy)
5032 - S_GET_VALUE (symbol_get_frag (fix->fx_addsy)->fr_symbol));
5033 fix->fx_addsy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
5034 }
5035
5036 return 0;
5037 }
5038
5039 /* A reloc from one csect to another must be kept. The assembler
5040 will, of course, keep relocs between sections, and it will keep
5041 absolute relocs, but we need to force it to keep PC relative relocs
5042 between two csects in the same section. */
5043
5044 int
5045 ppc_force_relocation (fix)
5046 fixS *fix;
5047 {
5048 /* At this point fix->fx_addsy should already have been converted to
5049 a csect symbol. If the csect does not include the fragment, then
5050 we need to force the relocation. */
5051 if (fix->fx_pcrel
5052 && fix->fx_addsy != NULL
5053 && symbol_get_tc (fix->fx_addsy)->subseg != 0
5054 && ((symbol_get_frag (fix->fx_addsy)->fr_address
5055 > fix->fx_frag->fr_address)
5056 || (symbol_get_tc (fix->fx_addsy)->next != NULL
5057 && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
5058 <= fix->fx_frag->fr_address))))
5059 return 1;
5060
5061 return 0;
5062 }
5063
5064 #endif /* OBJ_XCOFF */
5065
5066 #ifdef OBJ_ELF
5067 int
5068 ppc_fix_adjustable (fix)
5069 fixS *fix;
5070 {
5071 return (fix->fx_r_type != BFD_RELOC_16_GOTOFF
5072 && fix->fx_r_type != BFD_RELOC_LO16_GOTOFF
5073 && fix->fx_r_type != BFD_RELOC_HI16_GOTOFF
5074 && fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
5075 && fix->fx_r_type != BFD_RELOC_GPREL16
5076 && fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT
5077 && fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY
5078 && ! S_IS_EXTERNAL (fix->fx_addsy)
5079 && ! S_IS_WEAK (fix->fx_addsy)
5080 && (fix->fx_pcrel
5081 || (fix->fx_subsy != NULL
5082 && (S_GET_SEGMENT (fix->fx_subsy)
5083 == S_GET_SEGMENT (fix->fx_addsy)))
5084 || S_IS_LOCAL (fix->fx_addsy)));
5085 }
5086 #endif
5087
5088 /* Apply a fixup to the object code. This is called for all the
5089 fixups we generated by the call to fix_new_exp, above. In the call
5090 above we used a reloc code which was the largest legal reloc code
5091 plus the operand index. Here we undo that to recover the operand
5092 index. At this point all symbol values should be fully resolved,
5093 and we attempt to completely resolve the reloc. If we can not do
5094 that, we determine the correct reloc code and put it back in the
5095 fixup. */
5096
5097 void
5098 md_apply_fix3 (fixP, valP, seg)
5099 fixS *fixP;
5100 valueT * valP;
5101 segT seg ATTRIBUTE_UNUSED;
5102 {
5103 valueT value = * valP;
5104
5105 #ifdef OBJ_ELF
5106 if (fixP->fx_addsy != NULL)
5107 {
5108 /* `*valuep' may contain the value of the symbol on which the reloc
5109 will be based; we have to remove it. */
5110 if (symbol_used_in_reloc_p (fixP->fx_addsy)
5111 && S_GET_SEGMENT (fixP->fx_addsy) != absolute_section
5112 && S_GET_SEGMENT (fixP->fx_addsy) != undefined_section
5113 && ! bfd_is_com_section (S_GET_SEGMENT (fixP->fx_addsy)))
5114 value -= S_GET_VALUE (fixP->fx_addsy);
5115
5116 /* FIXME: Why '+'? Better yet, what exactly is '*valuep'
5117 supposed to be? I think this is related to various similar
5118 FIXMEs in tc-i386.c and tc-sparc.c. */
5119 if (fixP->fx_pcrel)
5120 value += fixP->fx_frag->fr_address + fixP->fx_where;
5121 }
5122 else
5123 fixP->fx_done = 1;
5124 #else
5125 /* FIXME FIXME FIXME: The value we are passed in *valuep includes
5126 the symbol values. Since we are using BFD_ASSEMBLER, if we are
5127 doing this relocation the code in write.c is going to call
5128 bfd_install_relocation, which is also going to use the symbol
5129 value. That means that if the reloc is fully resolved we want to
5130 use *valuep since bfd_install_relocation is not being used.
5131 However, if the reloc is not fully resolved we do not want to use
5132 *valuep, and must use fx_offset instead. However, if the reloc
5133 is PC relative, we do want to use *valuep since it includes the
5134 result of md_pcrel_from. This is confusing. */
5135 if (fixP->fx_addsy == (symbolS *) NULL)
5136 fixP->fx_done = 1;
5137
5138 else if (fixP->fx_pcrel)
5139 ;
5140
5141 else
5142 {
5143 value = fixP->fx_offset;
5144 if (fixP->fx_subsy != (symbolS *) NULL)
5145 {
5146 if (S_GET_SEGMENT (fixP->fx_subsy) == absolute_section)
5147 value -= S_GET_VALUE (fixP->fx_subsy);
5148 else
5149 {
5150 /* We can't actually support subtracting a symbol. */
5151 as_bad_where (fixP->fx_file, fixP->fx_line,
5152 _("expression too complex"));
5153 }
5154 }
5155 }
5156 #endif
5157
5158 if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
5159 {
5160 int opindex;
5161 const struct powerpc_operand *operand;
5162 char *where;
5163 unsigned long insn;
5164
5165 opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
5166
5167 operand = &powerpc_operands[opindex];
5168
5169 #ifdef OBJ_XCOFF
5170 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
5171 does not generate a reloc. It uses the offset of `sym' within its
5172 csect. Other usages, such as `.long sym', generate relocs. This
5173 is the documented behaviour of non-TOC symbols. */
5174 if ((operand->flags & PPC_OPERAND_PARENS) != 0
5175 && operand->bits == 16
5176 && operand->shift == 0
5177 && (operand->insert == NULL || ppc_xcoff64)
5178 && fixP->fx_addsy != NULL
5179 && symbol_get_tc (fixP->fx_addsy)->subseg != 0
5180 && symbol_get_tc (fixP->fx_addsy)->class != XMC_TC
5181 && symbol_get_tc (fixP->fx_addsy)->class != XMC_TC0
5182 && S_GET_SEGMENT (fixP->fx_addsy) != bss_section)
5183 {
5184 value = fixP->fx_offset;
5185 fixP->fx_done = 1;
5186 }
5187 #endif
5188
5189 /* Fetch the instruction, insert the fully resolved operand
5190 value, and stuff the instruction back again. */
5191 where = fixP->fx_frag->fr_literal + fixP->fx_where;
5192 if (target_big_endian)
5193 insn = bfd_getb32 ((unsigned char *) where);
5194 else
5195 insn = bfd_getl32 ((unsigned char *) where);
5196 insn = ppc_insert_operand (insn, operand, (offsetT) value,
5197 fixP->fx_file, fixP->fx_line);
5198 if (target_big_endian)
5199 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
5200 else
5201 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
5202
5203 if (fixP->fx_done)
5204 /* Nothing else to do here. */
5205 return;
5206
5207 assert (fixP->fx_addsy != NULL);
5208
5209 /* Determine a BFD reloc value based on the operand information.
5210 We are only prepared to turn a few of the operands into
5211 relocs. */
5212 if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
5213 && operand->bits == 26
5214 && operand->shift == 0)
5215 fixP->fx_r_type = BFD_RELOC_PPC_B26;
5216 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
5217 && operand->bits == 16
5218 && operand->shift == 0)
5219 fixP->fx_r_type = BFD_RELOC_PPC_B16;
5220 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
5221 && operand->bits == 26
5222 && operand->shift == 0)
5223 fixP->fx_r_type = BFD_RELOC_PPC_BA26;
5224 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
5225 && operand->bits == 16
5226 && operand->shift == 0)
5227 fixP->fx_r_type = BFD_RELOC_PPC_BA16;
5228 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
5229 else if ((operand->flags & PPC_OPERAND_PARENS) != 0
5230 && operand->bits == 16
5231 && operand->shift == 0
5232 && ppc_is_toc_sym (fixP->fx_addsy))
5233 {
5234 fixP->fx_r_type = BFD_RELOC_PPC_TOC16;
5235 #ifdef OBJ_ELF
5236 if (BFD_DEFAULT_TARGET_SIZE == 64
5237 && ppc_size == PPC_OPCODE_64
5238 && (operand->flags & PPC_OPERAND_DS) != 0)
5239 fixP->fx_r_type = BFD_RELOC_PPC64_TOC16_DS;
5240 #endif
5241 fixP->fx_size = 2;
5242 if (target_big_endian)
5243 fixP->fx_where += 2;
5244 }
5245 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
5246 else
5247 {
5248 char *sfile;
5249 unsigned int sline;
5250
5251 /* Use expr_symbol_where to see if this is an expression
5252 symbol. */
5253 if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
5254 as_bad_where (fixP->fx_file, fixP->fx_line,
5255 _("unresolved expression that must be resolved"));
5256 else
5257 as_bad_where (fixP->fx_file, fixP->fx_line,
5258 _("unsupported relocation against %s"),
5259 S_GET_NAME (fixP->fx_addsy));
5260 fixP->fx_done = 1;
5261 return;
5262 }
5263 }
5264 else
5265 {
5266 #ifdef OBJ_ELF
5267 ppc_elf_validate_fix (fixP, seg);
5268 #endif
5269 switch (fixP->fx_r_type)
5270 {
5271 case BFD_RELOC_CTOR:
5272 if (BFD_DEFAULT_TARGET_SIZE == 64 && ppc_size == PPC_OPCODE_64)
5273 goto ctor64;
5274 /* fall through */
5275
5276 case BFD_RELOC_32:
5277 if (fixP->fx_pcrel)
5278 fixP->fx_r_type = BFD_RELOC_32_PCREL;
5279 /* fall through */
5280
5281 case BFD_RELOC_RVA:
5282 case BFD_RELOC_32_PCREL:
5283 case BFD_RELOC_32_BASEREL:
5284 case BFD_RELOC_PPC_EMB_NADDR32:
5285 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5286 value, 4);
5287 break;
5288
5289 case BFD_RELOC_64:
5290 ctor64:
5291 if (fixP->fx_pcrel)
5292 fixP->fx_r_type = BFD_RELOC_64_PCREL;
5293 /* fall through */
5294
5295 case BFD_RELOC_64_PCREL:
5296 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5297 value, 8);
5298 break;
5299
5300 case BFD_RELOC_LO16:
5301 case BFD_RELOC_16:
5302 case BFD_RELOC_GPREL16:
5303 case BFD_RELOC_16_GOT_PCREL:
5304 case BFD_RELOC_16_GOTOFF:
5305 case BFD_RELOC_LO16_GOTOFF:
5306 case BFD_RELOC_HI16_GOTOFF:
5307 case BFD_RELOC_HI16_S_GOTOFF:
5308 case BFD_RELOC_LO16_BASEREL:
5309 case BFD_RELOC_HI16_BASEREL:
5310 case BFD_RELOC_HI16_S_BASEREL:
5311 case BFD_RELOC_PPC_EMB_NADDR16:
5312 case BFD_RELOC_PPC_EMB_NADDR16_LO:
5313 case BFD_RELOC_PPC_EMB_NADDR16_HI:
5314 case BFD_RELOC_PPC_EMB_NADDR16_HA:
5315 case BFD_RELOC_PPC_EMB_SDAI16:
5316 case BFD_RELOC_PPC_EMB_SDA2REL:
5317 case BFD_RELOC_PPC_EMB_SDA2I16:
5318 case BFD_RELOC_PPC_EMB_RELSEC16:
5319 case BFD_RELOC_PPC_EMB_RELST_LO:
5320 case BFD_RELOC_PPC_EMB_RELST_HI:
5321 case BFD_RELOC_PPC_EMB_RELST_HA:
5322 case BFD_RELOC_PPC_EMB_RELSDA:
5323 case BFD_RELOC_PPC_TOC16:
5324 #ifdef OBJ_ELF
5325 #if BFD_DEFAULT_TARGET_SIZE == 64
5326 case BFD_RELOC_PPC64_TOC16_LO:
5327 case BFD_RELOC_PPC64_TOC16_HI:
5328 case BFD_RELOC_PPC64_TOC16_HA:
5329 #endif
5330 #endif
5331 if (fixP->fx_pcrel)
5332 {
5333 if (fixP->fx_addsy != NULL)
5334 as_bad_where (fixP->fx_file, fixP->fx_line,
5335 _("cannot emit PC relative %s relocation against %s"),
5336 bfd_get_reloc_code_name (fixP->fx_r_type),
5337 S_GET_NAME (fixP->fx_addsy));
5338 else
5339 as_bad_where (fixP->fx_file, fixP->fx_line,
5340 _("cannot emit PC relative %s relocation"),
5341 bfd_get_reloc_code_name (fixP->fx_r_type));
5342 }
5343
5344 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5345 value, 2);
5346 break;
5347
5348 /* This case happens when you write, for example,
5349 lis %r3,(L1-L2)@ha
5350 where L1 and L2 are defined later. */
5351 case BFD_RELOC_HI16:
5352 if (fixP->fx_pcrel)
5353 abort ();
5354 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5355 PPC_HI (value), 2);
5356 break;
5357
5358 case BFD_RELOC_HI16_S:
5359 if (fixP->fx_pcrel)
5360 abort ();
5361 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5362 PPC_HA (value), 2);
5363 break;
5364
5365 #ifdef OBJ_ELF
5366 #if BFD_DEFAULT_TARGET_SIZE == 64
5367 case BFD_RELOC_PPC64_HIGHER:
5368 if (fixP->fx_pcrel)
5369 abort ();
5370 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5371 PPC_HIGHER (value), 2);
5372 break;
5373
5374 case BFD_RELOC_PPC64_HIGHER_S:
5375 if (fixP->fx_pcrel)
5376 abort ();
5377 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5378 PPC_HIGHERA (value), 2);
5379 break;
5380
5381 case BFD_RELOC_PPC64_HIGHEST:
5382 if (fixP->fx_pcrel)
5383 abort ();
5384 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5385 PPC_HIGHEST (value), 2);
5386 break;
5387
5388 case BFD_RELOC_PPC64_HIGHEST_S:
5389 if (fixP->fx_pcrel)
5390 abort ();
5391 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5392 PPC_HIGHESTA (value), 2);
5393 break;
5394
5395 case BFD_RELOC_PPC64_ADDR16_DS:
5396 case BFD_RELOC_PPC64_ADDR16_LO_DS:
5397 case BFD_RELOC_PPC64_GOT16_DS:
5398 case BFD_RELOC_PPC64_GOT16_LO_DS:
5399 case BFD_RELOC_PPC64_PLT16_LO_DS:
5400 case BFD_RELOC_PPC64_SECTOFF_DS:
5401 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
5402 case BFD_RELOC_PPC64_TOC16_DS:
5403 case BFD_RELOC_PPC64_TOC16_LO_DS:
5404 case BFD_RELOC_PPC64_PLTGOT16_DS:
5405 case BFD_RELOC_PPC64_PLTGOT16_LO_DS:
5406 if (fixP->fx_pcrel)
5407 abort ();
5408 {
5409 unsigned char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
5410 unsigned long val;
5411
5412 if (target_big_endian)
5413 val = bfd_getb16 (where);
5414 else
5415 val = bfd_getl16 (where);
5416 val |= (value & 0xfffc);
5417 if (target_big_endian)
5418 bfd_putb16 ((bfd_vma) val, where);
5419 else
5420 bfd_putl16 ((bfd_vma) val, where);
5421 }
5422 break;
5423 #endif
5424 #endif
5425 /* Because SDA21 modifies the register field, the size is set to 4
5426 bytes, rather than 2, so offset it here appropriately. */
5427 case BFD_RELOC_PPC_EMB_SDA21:
5428 if (fixP->fx_pcrel)
5429 abort ();
5430
5431 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where
5432 + ((target_big_endian) ? 2 : 0),
5433 value, 2);
5434 break;
5435
5436 case BFD_RELOC_8:
5437 if (fixP->fx_pcrel)
5438 abort ();
5439
5440 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5441 value, 1);
5442 break;
5443
5444 case BFD_RELOC_24_PLT_PCREL:
5445 case BFD_RELOC_PPC_LOCAL24PC:
5446 if (!fixP->fx_pcrel && !fixP->fx_done)
5447 abort ();
5448
5449 if (fixP->fx_done)
5450 {
5451 char *where;
5452 unsigned long insn;
5453
5454 /* Fetch the instruction, insert the fully resolved operand
5455 value, and stuff the instruction back again. */
5456 where = fixP->fx_frag->fr_literal + fixP->fx_where;
5457 if (target_big_endian)
5458 insn = bfd_getb32 ((unsigned char *) where);
5459 else
5460 insn = bfd_getl32 ((unsigned char *) where);
5461 if ((value & 3) != 0)
5462 as_bad_where (fixP->fx_file, fixP->fx_line,
5463 _("must branch to an address a multiple of 4"));
5464 if ((offsetT) value < -0x40000000
5465 || (offsetT) value >= 0x40000000)
5466 as_bad_where (fixP->fx_file, fixP->fx_line,
5467 _("@local or @plt branch destination is too far away, %ld bytes"),
5468 (long) value);
5469 insn = insn | (value & 0x03fffffc);
5470 if (target_big_endian)
5471 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
5472 else
5473 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
5474 }
5475 break;
5476
5477 case BFD_RELOC_VTABLE_INHERIT:
5478 fixP->fx_done = 0;
5479 if (fixP->fx_addsy
5480 && !S_IS_DEFINED (fixP->fx_addsy)
5481 && !S_IS_WEAK (fixP->fx_addsy))
5482 S_SET_WEAK (fixP->fx_addsy);
5483 break;
5484
5485 case BFD_RELOC_VTABLE_ENTRY:
5486 fixP->fx_done = 0;
5487 break;
5488
5489 #ifdef OBJ_ELF
5490 #if BFD_DEFAULT_TARGET_SIZE == 64
5491 /* Generated by reference to `sym@tocbase'. The sym is
5492 ignored by the linker. */
5493 case BFD_RELOC_PPC64_TOC:
5494 fixP->fx_done = 0;
5495 break;
5496 #endif
5497 #endif
5498 default:
5499 fprintf (stderr,
5500 _("Gas failure, reloc value %d\n"), fixP->fx_r_type);
5501 fflush (stderr);
5502 abort ();
5503 }
5504 }
5505
5506 #ifdef OBJ_ELF
5507 fixP->fx_addnumber = value;
5508 #else
5509 if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16)
5510 fixP->fx_addnumber = 0;
5511 else
5512 {
5513 #ifdef TE_PE
5514 fixP->fx_addnumber = 0;
5515 #else
5516 /* We want to use the offset within the data segment of the
5517 symbol, not the actual VMA of the symbol. */
5518 fixP->fx_addnumber =
5519 - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixP->fx_addsy));
5520 #endif
5521 }
5522 #endif
5523 }
5524
5525 /* Generate a reloc for a fixup. */
5526
5527 arelent *
5528 tc_gen_reloc (seg, fixp)
5529 asection *seg ATTRIBUTE_UNUSED;
5530 fixS *fixp;
5531 {
5532 arelent *reloc;
5533
5534 reloc = (arelent *) xmalloc (sizeof (arelent));
5535
5536 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
5537 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
5538 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
5539 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
5540 if (reloc->howto == (reloc_howto_type *) NULL)
5541 {
5542 as_bad_where (fixp->fx_file, fixp->fx_line,
5543 _("reloc %d not supported by object file format"),
5544 (int) fixp->fx_r_type);
5545 return NULL;
5546 }
5547 reloc->addend = fixp->fx_addnumber;
5548
5549 return reloc;
5550 }