1 /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005 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, 51 Franklin Street - Fifth Floor, Boston, MA
21 02110-1301, USA. */
22
23 #include <stdio.h>
24 #include "as.h"
25 #include "safe-ctype.h"
26 #include "subsegs.h"
27 #include "dw2gencfi.h"
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) >> 16 >> 16) & 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) >> 24 >> 24) & 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 bfd_boolean reg_names_p = TARGET_REG_NAMES_P;
87
88 static bfd_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 *, offsetT));
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 static void ppc_apuinfo_section_add PARAMS ((unsigned int apu, unsigned int version));
134 #endif
135
136 #ifdef TE_PE
137 static void ppc_set_current_section PARAMS ((segT));
138 static void ppc_previous PARAMS ((int));
139 static void ppc_pdata PARAMS ((int));
140 static void ppc_ydata PARAMS ((int));
141 static void ppc_reldata PARAMS ((int));
142 static void ppc_rdata PARAMS ((int));
143 static void ppc_ualong PARAMS ((int));
144 static void ppc_znop PARAMS ((int));
145 static void ppc_pe_comm PARAMS ((int));
146 static void ppc_pe_section PARAMS ((int));
147 static void ppc_pe_function PARAMS ((int));
148 static void ppc_pe_tocd PARAMS ((int));
149 #endif
150
151 /* Generic assembler global variables which must be defined by all
152 targets. */
153
154 #ifdef OBJ_ELF
155 /* This string holds the chars that always start a comment. If the
156 pre-processor is disabled, these aren't very useful. The macro
157 tc_comment_chars points to this. We use this, rather than the
158 usual comment_chars, so that we can switch for Solaris conventions. */
159 static const char ppc_solaris_comment_chars[] = "#!";
160 static const char ppc_eabi_comment_chars[] = "#";
161
162 #ifdef TARGET_SOLARIS_COMMENT
163 const char *ppc_comment_chars = ppc_solaris_comment_chars;
164 #else
165 const char *ppc_comment_chars = ppc_eabi_comment_chars;
166 #endif
167 #else
168 const char comment_chars[] = "#";
169 #endif
170
171 /* Characters which start a comment at the beginning of a line. */
172 const char line_comment_chars[] = "#";
173
174 /* Characters which may be used to separate multiple commands on a
175 single line. */
176 const char line_separator_chars[] = ";";
177
178 /* Characters which are used to indicate an exponent in a floating
179 point number. */
180 const char EXP_CHARS[] = "eE";
181
182 /* Characters which mean that a number is a floating point constant,
183 as in 0d1.0. */
184 const char FLT_CHARS[] = "dD";
185
186 /* '+' and '-' can be used as postfix predicate predictors for conditional
187 branches. So they need to be accepted as symbol characters.
188 Also, anything that can start an operand needs to be mentioned here,
189 to stop the input scrubber eating whitespace. */
190 const char ppc_symbol_chars[] = "+-%[";
191
192 /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
193 int ppc_cie_data_alignment;
194
195 /* The target specific pseudo-ops which we support. */
196
197 const pseudo_typeS md_pseudo_table[] =
198 {
199 /* Pseudo-ops which must be overridden. */
200 { "byte", ppc_byte, 0 },
201
202 #ifdef OBJ_XCOFF
203 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
204 legitimately belong in the obj-*.c file. However, XCOFF is based
205 on COFF, and is only implemented for the RS/6000. We just use
206 obj-coff.c, and add what we need here. */
207 { "comm", ppc_comm, 0 },
208 { "lcomm", ppc_comm, 1 },
209 { "bb", ppc_bb, 0 },
210 { "bc", ppc_bc, 0 },
211 { "bf", ppc_bf, 0 },
212 { "bi", ppc_biei, 0 },
213 { "bs", ppc_bs, 0 },
214 { "csect", ppc_csect, 0 },
215 { "data", ppc_section, 'd' },
216 { "eb", ppc_eb, 0 },
217 { "ec", ppc_ec, 0 },
218 { "ef", ppc_ef, 0 },
219 { "ei", ppc_biei, 1 },
220 { "es", ppc_es, 0 },
221 { "extern", ppc_extern, 0 },
222 { "function", ppc_function, 0 },
223 { "lglobl", ppc_lglobl, 0 },
224 { "rename", ppc_rename, 0 },
225 { "section", ppc_named_section, 0 },
226 { "stabx", ppc_stabx, 0 },
227 { "text", ppc_section, 't' },
228 { "toc", ppc_toc, 0 },
229 { "long", ppc_xcoff_cons, 2 },
230 { "llong", ppc_xcoff_cons, 3 },
231 { "word", ppc_xcoff_cons, 1 },
232 { "short", ppc_xcoff_cons, 1 },
233 { "vbyte", ppc_vbyte, 0 },
234 #endif
235
236 #ifdef OBJ_ELF
237 { "llong", ppc_elf_cons, 8 },
238 { "quad", ppc_elf_cons, 8 },
239 { "long", ppc_elf_cons, 4 },
240 { "word", ppc_elf_cons, 2 },
241 { "short", ppc_elf_cons, 2 },
242 { "rdata", ppc_elf_rdata, 0 },
243 { "rodata", ppc_elf_rdata, 0 },
244 { "lcomm", ppc_elf_lcomm, 0 },
245 #endif
246
247 #ifdef TE_PE
248 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
249 { "previous", ppc_previous, 0 },
250 { "pdata", ppc_pdata, 0 },
251 { "ydata", ppc_ydata, 0 },
252 { "reldata", ppc_reldata, 0 },
253 { "rdata", ppc_rdata, 0 },
254 { "ualong", ppc_ualong, 0 },
255 { "znop", ppc_znop, 0 },
256 { "comm", ppc_pe_comm, 0 },
257 { "lcomm", ppc_pe_comm, 1 },
258 { "section", ppc_pe_section, 0 },
259 { "function", ppc_pe_function,0 },
260 { "tocd", ppc_pe_tocd, 0 },
261 #endif
262
263 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
264 { "tc", ppc_tc, 0 },
265 { "machine", ppc_machine, 0 },
266 #endif
267
268 { NULL, NULL, 0 }
269 };
270
271
272 /* Predefined register names if -mregnames (or default for Windows NT).
273 In general, there are lots of them, in an attempt to be compatible
274 with a number of other Windows NT assemblers. */
275
276 /* Structure to hold information about predefined registers. */
277 struct pd_reg
278 {
279 char *name;
280 int value;
281 };
282
283 /* List of registers that are pre-defined:
284
285 Each general register has predefined names of the form:
286 1. r<reg_num> which has the value <reg_num>.
287 2. r.<reg_num> which has the value <reg_num>.
288
289 Each floating point register has predefined names of the form:
290 1. f<reg_num> which has the value <reg_num>.
291 2. f.<reg_num> which has the value <reg_num>.
292
293 Each vector unit register has predefined names of the form:
294 1. v<reg_num> which has the value <reg_num>.
295 2. v.<reg_num> which has the value <reg_num>.
296
297 Each condition register has predefined names of the form:
298 1. cr<reg_num> which has the value <reg_num>.
299 2. cr.<reg_num> which has the value <reg_num>.
300
301 There are individual registers as well:
302 sp or r.sp has the value 1
303 rtoc or r.toc has the value 2
304 fpscr has the value 0
305 xer has the value 1
306 lr has the value 8
307 ctr has the value 9
308 pmr has the value 0
309 dar has the value 19
310 dsisr has the value 18
311 dec has the value 22
312 sdr1 has the value 25
313 srr0 has the value 26
314 srr1 has the value 27
315
316 The table is sorted. Suitable for searching by a binary search. */
317
318 static const struct pd_reg pre_defined_registers[] =
319 {
320 { "cr.0", 0 }, /* Condition Registers */
321 { "cr.1", 1 },
322 { "cr.2", 2 },
323 { "cr.3", 3 },
324 { "cr.4", 4 },
325 { "cr.5", 5 },
326 { "cr.6", 6 },
327 { "cr.7", 7 },
328
329 { "cr0", 0 },
330 { "cr1", 1 },
331 { "cr2", 2 },
332 { "cr3", 3 },
333 { "cr4", 4 },
334 { "cr5", 5 },
335 { "cr6", 6 },
336 { "cr7", 7 },
337
338 { "ctr", 9 },
339
340 { "dar", 19 }, /* Data Access Register */
341 { "dec", 22 }, /* Decrementer */
342 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
343
344 { "f.0", 0 }, /* Floating point registers */
345 { "f.1", 1 },
346 { "f.10", 10 },
347 { "f.11", 11 },
348 { "f.12", 12 },
349 { "f.13", 13 },
350 { "f.14", 14 },
351 { "f.15", 15 },
352 { "f.16", 16 },
353 { "f.17", 17 },
354 { "f.18", 18 },
355 { "f.19", 19 },
356 { "f.2", 2 },
357 { "f.20", 20 },
358 { "f.21", 21 },
359 { "f.22", 22 },
360 { "f.23", 23 },
361 { "f.24", 24 },
362 { "f.25", 25 },
363 { "f.26", 26 },
364 { "f.27", 27 },
365 { "f.28", 28 },
366 { "f.29", 29 },
367 { "f.3", 3 },
368 { "f.30", 30 },
369 { "f.31", 31 },
370 { "f.4", 4 },
371 { "f.5", 5 },
372 { "f.6", 6 },
373 { "f.7", 7 },
374 { "f.8", 8 },
375 { "f.9", 9 },
376
377 { "f0", 0 },
378 { "f1", 1 },
379 { "f10", 10 },
380 { "f11", 11 },
381 { "f12", 12 },
382 { "f13", 13 },
383 { "f14", 14 },
384 { "f15", 15 },
385 { "f16", 16 },
386 { "f17", 17 },
387 { "f18", 18 },
388 { "f19", 19 },
389 { "f2", 2 },
390 { "f20", 20 },
391 { "f21", 21 },
392 { "f22", 22 },
393 { "f23", 23 },
394 { "f24", 24 },
395 { "f25", 25 },
396 { "f26", 26 },
397 { "f27", 27 },
398 { "f28", 28 },
399 { "f29", 29 },
400 { "f3", 3 },
401 { "f30", 30 },
402 { "f31", 31 },
403 { "f4", 4 },
404 { "f5", 5 },
405 { "f6", 6 },
406 { "f7", 7 },
407 { "f8", 8 },
408 { "f9", 9 },
409
410 { "fpscr", 0 },
411
412 { "lr", 8 }, /* Link Register */
413
414 { "pmr", 0 },
415
416 { "r.0", 0 }, /* General Purpose Registers */
417 { "r.1", 1 },
418 { "r.10", 10 },
419 { "r.11", 11 },
420 { "r.12", 12 },
421 { "r.13", 13 },
422 { "r.14", 14 },
423 { "r.15", 15 },
424 { "r.16", 16 },
425 { "r.17", 17 },
426 { "r.18", 18 },
427 { "r.19", 19 },
428 { "r.2", 2 },
429 { "r.20", 20 },
430 { "r.21", 21 },
431 { "r.22", 22 },
432 { "r.23", 23 },
433 { "r.24", 24 },
434 { "r.25", 25 },
435 { "r.26", 26 },
436 { "r.27", 27 },
437 { "r.28", 28 },
438 { "r.29", 29 },
439 { "r.3", 3 },
440 { "r.30", 30 },
441 { "r.31", 31 },
442 { "r.4", 4 },
443 { "r.5", 5 },
444 { "r.6", 6 },
445 { "r.7", 7 },
446 { "r.8", 8 },
447 { "r.9", 9 },
448
449 { "r.sp", 1 }, /* Stack Pointer */
450
451 { "r.toc", 2 }, /* Pointer to the table of contents */
452
453 { "r0", 0 }, /* More general purpose registers */
454 { "r1", 1 },
455 { "r10", 10 },
456 { "r11", 11 },
457 { "r12", 12 },
458 { "r13", 13 },
459 { "r14", 14 },
460 { "r15", 15 },
461 { "r16", 16 },
462 { "r17", 17 },
463 { "r18", 18 },
464 { "r19", 19 },
465 { "r2", 2 },
466 { "r20", 20 },
467 { "r21", 21 },
468 { "r22", 22 },
469 { "r23", 23 },
470 { "r24", 24 },
471 { "r25", 25 },
472 { "r26", 26 },
473 { "r27", 27 },
474 { "r28", 28 },
475 { "r29", 29 },
476 { "r3", 3 },
477 { "r30", 30 },
478 { "r31", 31 },
479 { "r4", 4 },
480 { "r5", 5 },
481 { "r6", 6 },
482 { "r7", 7 },
483 { "r8", 8 },
484 { "r9", 9 },
485
486 { "rtoc", 2 }, /* Table of contents */
487
488 { "sdr1", 25 }, /* Storage Description Register 1 */
489
490 { "sp", 1 },
491
492 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
493 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
494
495 { "v.0", 0 }, /* Vector registers */
496 { "v.1", 1 },
497 { "v.10", 10 },
498 { "v.11", 11 },
499 { "v.12", 12 },
500 { "v.13", 13 },
501 { "v.14", 14 },
502 { "v.15", 15 },
503 { "v.16", 16 },
504 { "v.17", 17 },
505 { "v.18", 18 },
506 { "v.19", 19 },
507 { "v.2", 2 },
508 { "v.20", 20 },
509 { "v.21", 21 },
510 { "v.22", 22 },
511 { "v.23", 23 },
512 { "v.24", 24 },
513 { "v.25", 25 },
514 { "v.26", 26 },
515 { "v.27", 27 },
516 { "v.28", 28 },
517 { "v.29", 29 },
518 { "v.3", 3 },
519 { "v.30", 30 },
520 { "v.31", 31 },
521 { "v.4", 4 },
522 { "v.5", 5 },
523 { "v.6", 6 },
524 { "v.7", 7 },
525 { "v.8", 8 },
526 { "v.9", 9 },
527
528 { "v0", 0 },
529 { "v1", 1 },
530 { "v10", 10 },
531 { "v11", 11 },
532 { "v12", 12 },
533 { "v13", 13 },
534 { "v14", 14 },
535 { "v15", 15 },
536 { "v16", 16 },
537 { "v17", 17 },
538 { "v18", 18 },
539 { "v19", 19 },
540 { "v2", 2 },
541 { "v20", 20 },
542 { "v21", 21 },
543 { "v22", 22 },
544 { "v23", 23 },
545 { "v24", 24 },
546 { "v25", 25 },
547 { "v26", 26 },
548 { "v27", 27 },
549 { "v28", 28 },
550 { "v29", 29 },
551 { "v3", 3 },
552 { "v30", 30 },
553 { "v31", 31 },
554 { "v4", 4 },
555 { "v5", 5 },
556 { "v6", 6 },
557 { "v7", 7 },
558 { "v8", 8 },
559 { "v9", 9 },
560
561 { "xer", 1 },
562
563 };
564
565 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
566
567 /* Given NAME, find the register number associated with that name, return
568 the integer value associated with the given name or -1 on failure. */
569
570 static int reg_name_search
571 PARAMS ((const struct pd_reg *, int, const char * name));
572
573 static int
reg_name_search(regs,regcount,name)574 reg_name_search (regs, regcount, name)
575 const struct pd_reg *regs;
576 int regcount;
577 const char *name;
578 {
579 int middle, low, high;
580 int cmp;
581
582 low = 0;
583 high = regcount - 1;
584
585 do
586 {
587 middle = (low + high) / 2;
588 cmp = strcasecmp (name, regs[middle].name);
589 if (cmp < 0)
590 high = middle - 1;
591 else if (cmp > 0)
592 low = middle + 1;
593 else
594 return regs[middle].value;
595 }
596 while (low <= high);
597
598 return -1;
599 }
600
601 /*
602 * Summary of register_name.
603 *
604 * in: Input_line_pointer points to 1st char of operand.
605 *
606 * out: A expressionS.
607 * The operand may have been a register: in this case, X_op == O_register,
608 * X_add_number is set to the register number, and truth is returned.
609 * Input_line_pointer->(next non-blank) char after operand, or is in its
610 * original state.
611 */
612
613 static bfd_boolean
register_name(expressionP)614 register_name (expressionP)
615 expressionS *expressionP;
616 {
617 int reg_number;
618 char *name;
619 char *start;
620 char c;
621
622 /* Find the spelling of the operand. */
623 start = name = input_line_pointer;
624 if (name[0] == '%' && ISALPHA (name[1]))
625 name = ++input_line_pointer;
626
627 else if (!reg_names_p || !ISALPHA (name[0]))
628 return FALSE;
629
630 c = get_symbol_end ();
631 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
632
633 /* Put back the delimiting char. */
634 *input_line_pointer = c;
635
636 /* Look to see if it's in the register table. */
637 if (reg_number >= 0)
638 {
639 expressionP->X_op = O_register;
640 expressionP->X_add_number = reg_number;
641
642 /* Make the rest nice. */
643 expressionP->X_add_symbol = NULL;
644 expressionP->X_op_symbol = NULL;
645 return TRUE;
646 }
647
648 /* Reset the line as if we had not done anything. */
649 input_line_pointer = start;
650 return FALSE;
651 }
652
653 /* This function is called for each symbol seen in an expression. It
654 handles the special parsing which PowerPC assemblers are supposed
655 to use for condition codes. */
656
657 /* Whether to do the special parsing. */
658 static bfd_boolean cr_operand;
659
660 /* Names to recognize in a condition code. This table is sorted. */
661 static const struct pd_reg cr_names[] =
662 {
663 { "cr0", 0 },
664 { "cr1", 1 },
665 { "cr2", 2 },
666 { "cr3", 3 },
667 { "cr4", 4 },
668 { "cr5", 5 },
669 { "cr6", 6 },
670 { "cr7", 7 },
671 { "eq", 2 },
672 { "gt", 1 },
673 { "lt", 0 },
674 { "so", 3 },
675 { "un", 3 }
676 };
677
678 /* Parsing function. This returns non-zero if it recognized an
679 expression. */
680
681 int
ppc_parse_name(name,expr)682 ppc_parse_name (name, expr)
683 const char *name;
684 expressionS *expr;
685 {
686 int val;
687
688 if (! cr_operand)
689 return 0;
690
691 val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0],
692 name);
693 if (val < 0)
694 return 0;
695
696 expr->X_op = O_constant;
697 expr->X_add_number = val;
698
699 return 1;
700 }
701
702 /* Local variables. */
703
704 /* The type of processor we are assembling for. This is one or more
705 of the PPC_OPCODE flags defined in opcode/ppc.h. */
706 static unsigned long ppc_cpu = 0;
707
708 /* Whether to target xcoff64/elf64. */
709 static unsigned int ppc_obj64 = BFD_DEFAULT_TARGET_SIZE == 64;
710
711 /* Opcode hash table. */
712 static struct hash_control *ppc_hash;
713
714 /* Macro hash table. */
715 static struct hash_control *ppc_macro_hash;
716
717 #ifdef OBJ_ELF
718 /* What type of shared library support to use. */
719 static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE;
720
721 /* Flags to set in the elf header. */
722 static flagword ppc_flags = 0;
723
724 /* Whether this is Solaris or not. */
725 #ifdef TARGET_SOLARIS_COMMENT
726 #define SOLARIS_P TRUE
727 #else
728 #define SOLARIS_P FALSE
729 #endif
730
731 static bfd_boolean msolaris = SOLARIS_P;
732 #endif
733
734 #ifdef OBJ_XCOFF
735
736 /* The RS/6000 assembler uses the .csect pseudo-op to generate code
737 using a bunch of different sections. These assembler sections,
738 however, are all encompassed within the .text or .data sections of
739 the final output file. We handle this by using different
740 subsegments within these main segments. */
741
742 /* Next subsegment to allocate within the .text segment. */
743 static subsegT ppc_text_subsegment = 2;
744
745 /* Linked list of csects in the text section. */
746 static symbolS *ppc_text_csects;
747
748 /* Next subsegment to allocate within the .data segment. */
749 static subsegT ppc_data_subsegment = 2;
750
751 /* Linked list of csects in the data section. */
752 static symbolS *ppc_data_csects;
753
754 /* The current csect. */
755 static symbolS *ppc_current_csect;
756
757 /* The RS/6000 assembler uses a TOC which holds addresses of functions
758 and variables. Symbols are put in the TOC with the .tc pseudo-op.
759 A special relocation is used when accessing TOC entries. We handle
760 the TOC as a subsegment within the .data segment. We set it up if
761 we see a .toc pseudo-op, and save the csect symbol here. */
762 static symbolS *ppc_toc_csect;
763
764 /* The first frag in the TOC subsegment. */
765 static fragS *ppc_toc_frag;
766
767 /* The first frag in the first subsegment after the TOC in the .data
768 segment. NULL if there are no subsegments after the TOC. */
769 static fragS *ppc_after_toc_frag;
770
771 /* The current static block. */
772 static symbolS *ppc_current_block;
773
774 /* The COFF debugging section; set by md_begin. This is not the
775 .debug section, but is instead the secret BFD section which will
776 cause BFD to set the section number of a symbol to N_DEBUG. */
777 static asection *ppc_coff_debug_section;
778
779 #endif /* OBJ_XCOFF */
780
781 #ifdef TE_PE
782
783 /* Various sections that we need for PE coff support. */
784 static segT ydata_section;
785 static segT pdata_section;
786 static segT reldata_section;
787 static segT rdata_section;
788 static segT tocdata_section;
789
790 /* The current section and the previous section. See ppc_previous. */
791 static segT ppc_previous_section;
792 static segT ppc_current_section;
793
794 #endif /* TE_PE */
795
796 #ifdef OBJ_ELF
797 symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
798 #define PPC_APUINFO_ISEL 0x40
799 #define PPC_APUINFO_PMR 0x41
800 #define PPC_APUINFO_RFMCI 0x42
801 #define PPC_APUINFO_CACHELCK 0x43
802 #define PPC_APUINFO_SPE 0x100
803 #define PPC_APUINFO_EFS 0x101
804 #define PPC_APUINFO_BRLOCK 0x102
805
806 /*
807 * We keep a list of APUinfo
808 */
809 unsigned long *ppc_apuinfo_list;
810 unsigned int ppc_apuinfo_num;
811 unsigned int ppc_apuinfo_num_alloc;
812 #endif /* OBJ_ELF */
813
814 #ifdef OBJ_ELF
815 const char *const md_shortopts = "b:l:usm:K:VQ:";
816 #else
817 const char *const md_shortopts = "um:";
818 #endif
819 const struct option md_longopts[] = {
820 {NULL, no_argument, NULL, 0}
821 };
822 const size_t md_longopts_size = sizeof (md_longopts);
823
824
825 /* Handle -m options that set cpu type, and .machine arg. */
826
827 static int
parse_cpu(const char * arg)828 parse_cpu (const char *arg)
829 {
830 /* -mpwrx and -mpwr2 mean to assemble for the IBM POWER/2
831 (RIOS2). */
832 if (strcmp (arg, "pwrx") == 0 || strcmp (arg, "pwr2") == 0)
833 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_POWER2 | PPC_OPCODE_32;
834 /* -mpwr means to assemble for the IBM POWER (RIOS1). */
835 else if (strcmp (arg, "pwr") == 0)
836 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_32;
837 /* -m601 means to assemble for the PowerPC 601, which includes
838 instructions that are holdovers from the Power. */
839 else if (strcmp (arg, "601") == 0)
840 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
841 | PPC_OPCODE_601 | PPC_OPCODE_32);
842 /* -mppc, -mppc32, -m603, and -m604 mean to assemble for the
843 PowerPC 603/604. */
844 else if (strcmp (arg, "ppc") == 0
845 || strcmp (arg, "ppc32") == 0
846 || strcmp (arg, "603") == 0
847 || strcmp (arg, "604") == 0)
848 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32;
849 /* -m403 and -m405 mean to assemble for the PowerPC 403/405. */
850 else if (strcmp (arg, "403") == 0
851 || strcmp (arg, "405") == 0)
852 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
853 | PPC_OPCODE_403 | PPC_OPCODE_32);
854 else if (strcmp (arg, "440") == 0)
855 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32
856 | PPC_OPCODE_440 | PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI);
857 else if (strcmp (arg, "7400") == 0
858 || strcmp (arg, "7410") == 0
859 || strcmp (arg, "7450") == 0
860 || strcmp (arg, "7455") == 0)
861 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
862 | PPC_OPCODE_ALTIVEC | PPC_OPCODE_32);
863 else if (strcmp (arg, "e300") == 0)
864 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32
865 | PPC_OPCODE_E300);
866 else if (strcmp (arg, "altivec") == 0)
867 {
868 if (ppc_cpu == 0)
869 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ALTIVEC;
870 else
871 ppc_cpu |= PPC_OPCODE_ALTIVEC;
872 }
873 else if (strcmp (arg, "e500") == 0 || strcmp (arg, "e500x2") == 0)
874 {
875 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_SPE
876 | PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
877 | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK
878 | PPC_OPCODE_RFMCI);
879 }
880 else if (strcmp (arg, "spe") == 0)
881 {
882 if (ppc_cpu == 0)
883 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_SPE | PPC_OPCODE_EFS;
884 else
885 ppc_cpu |= PPC_OPCODE_SPE;
886 }
887 /* -mppc64 and -m620 mean to assemble for the 64-bit PowerPC
888 620. */
889 else if (strcmp (arg, "ppc64") == 0 || strcmp (arg, "620") == 0)
890 {
891 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64;
892 }
893 else if (strcmp (arg, "ppc64bridge") == 0)
894 {
895 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
896 | PPC_OPCODE_64_BRIDGE | PPC_OPCODE_64);
897 }
898 /* -mbooke/-mbooke32 mean enable 32-bit BookE support. */
899 else if (strcmp (arg, "booke") == 0 || strcmp (arg, "booke32") == 0)
900 {
901 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32;
902 }
903 /* -mbooke64 means enable 64-bit BookE support. */
904 else if (strcmp (arg, "booke64") == 0)
905 {
906 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE
907 | PPC_OPCODE_BOOKE64 | PPC_OPCODE_64);
908 }
909 else if (strcmp (arg, "power4") == 0)
910 {
911 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
912 | PPC_OPCODE_64 | PPC_OPCODE_POWER4);
913 }
914 else if (strcmp (arg, "power5") == 0)
915 {
916 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
917 | PPC_OPCODE_64 | PPC_OPCODE_POWER4
918 | PPC_OPCODE_POWER5);
919 }
920 /* -mcom means assemble for the common intersection between Power
921 and PowerPC. At present, we just allow the union, rather
922 than the intersection. */
923 else if (strcmp (arg, "com") == 0)
924 ppc_cpu = PPC_OPCODE_COMMON | PPC_OPCODE_32;
925 /* -many means to assemble for any architecture (PWR/PWRX/PPC). */
926 else if (strcmp (arg, "any") == 0)
927 ppc_cpu |= PPC_OPCODE_ANY;
928 else
929 return 0;
930
931 return 1;
932 }
933
934 int
md_parse_option(c,arg)935 md_parse_option (c, arg)
936 int c;
937 char *arg;
938 {
939 switch (c)
940 {
941 case 'u':
942 /* -u means that any undefined symbols should be treated as
943 external, which is the default for gas anyhow. */
944 break;
945
946 #ifdef OBJ_ELF
947 case 'l':
948 /* Solaris as takes -le (presumably for little endian). For completeness
949 sake, recognize -be also. */
950 if (strcmp (arg, "e") == 0)
951 {
952 target_big_endian = 0;
953 set_target_endian = 1;
954 }
955 else
956 return 0;
957
958 break;
959
960 case 'b':
961 if (strcmp (arg, "e") == 0)
962 {
963 target_big_endian = 1;
964 set_target_endian = 1;
965 }
966 else
967 return 0;
968
969 break;
970
971 case 'K':
972 /* Recognize -K PIC. */
973 if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
974 {
975 shlib = SHLIB_PIC;
976 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
977 }
978 else
979 return 0;
980
981 break;
982 #endif
983
984 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
985 case 'a':
986 if (strcmp (arg, "64") == 0)
987 {
988 #ifdef BFD64
989 ppc_obj64 = 1;
990 #else
991 as_fatal (_("%s unsupported"), "-a64");
992 #endif
993 }
994 else if (strcmp (arg, "32") == 0)
995 ppc_obj64 = 0;
996 else
997 return 0;
998 break;
999
1000 case 'm':
1001 if (parse_cpu (arg))
1002 ;
1003
1004 else if (strcmp (arg, "regnames") == 0)
1005 reg_names_p = TRUE;
1006
1007 else if (strcmp (arg, "no-regnames") == 0)
1008 reg_names_p = FALSE;
1009
1010 #ifdef OBJ_ELF
1011 /* -mrelocatable/-mrelocatable-lib -- warn about initializations
1012 that require relocation. */
1013 else if (strcmp (arg, "relocatable") == 0)
1014 {
1015 shlib = SHLIB_MRELOCATABLE;
1016 ppc_flags |= EF_PPC_RELOCATABLE;
1017 }
1018
1019 else if (strcmp (arg, "relocatable-lib") == 0)
1020 {
1021 shlib = SHLIB_MRELOCATABLE;
1022 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
1023 }
1024
1025 /* -memb, set embedded bit. */
1026 else if (strcmp (arg, "emb") == 0)
1027 ppc_flags |= EF_PPC_EMB;
1028
1029 /* -mlittle/-mbig set the endianess. */
1030 else if (strcmp (arg, "little") == 0
1031 || strcmp (arg, "little-endian") == 0)
1032 {
1033 target_big_endian = 0;
1034 set_target_endian = 1;
1035 }
1036
1037 else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
1038 {
1039 target_big_endian = 1;
1040 set_target_endian = 1;
1041 }
1042
1043 else if (strcmp (arg, "solaris") == 0)
1044 {
1045 msolaris = TRUE;
1046 ppc_comment_chars = ppc_solaris_comment_chars;
1047 }
1048
1049 else if (strcmp (arg, "no-solaris") == 0)
1050 {
1051 msolaris = FALSE;
1052 ppc_comment_chars = ppc_eabi_comment_chars;
1053 }
1054 #endif
1055 else
1056 {
1057 as_bad (_("invalid switch -m%s"), arg);
1058 return 0;
1059 }
1060 break;
1061
1062 #ifdef OBJ_ELF
1063 /* -V: SVR4 argument to print version ID. */
1064 case 'V':
1065 print_version_id ();
1066 break;
1067
1068 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
1069 should be emitted or not. FIXME: Not implemented. */
1070 case 'Q':
1071 break;
1072
1073 /* Solaris takes -s to specify that .stabs go in a .stabs section,
1074 rather than .stabs.excl, which is ignored by the linker.
1075 FIXME: Not implemented. */
1076 case 's':
1077 if (arg)
1078 return 0;
1079
1080 break;
1081 #endif
1082
1083 default:
1084 return 0;
1085 }
1086
1087 return 1;
1088 }
1089
1090 void
md_show_usage(stream)1091 md_show_usage (stream)
1092 FILE *stream;
1093 {
1094 fprintf (stream, _("\
1095 PowerPC options:\n\
1096 -a32 generate ELF32/XCOFF32\n\
1097 -a64 generate ELF64/XCOFF64\n\
1098 -u ignored\n\
1099 -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\
1100 -mpwr generate code for POWER (RIOS1)\n\
1101 -m601 generate code for PowerPC 601\n\
1102 -mppc, -mppc32, -m603, -m604\n\
1103 generate code for PowerPC 603/604\n\
1104 -m403, -m405 generate code for PowerPC 403/405\n\
1105 -m440 generate code for PowerPC 440\n\
1106 -m7400, -m7410, -m7450, -m7455\n\
1107 generate code For PowerPC 7400/7410/7450/7455\n"));
1108 fprintf (stream, _("\
1109 -mppc64, -m620 generate code for PowerPC 620/625/630\n\
1110 -mppc64bridge generate code for PowerPC 64, including bridge insns\n\
1111 -mbooke64 generate code for 64-bit PowerPC BookE\n\
1112 -mbooke, mbooke32 generate code for 32-bit PowerPC BookE\n\
1113 -mpower4 generate code for Power4 architecture\n\
1114 -mpower5 generate code for Power5 architecture\n\
1115 -mcom generate code Power/PowerPC common instructions\n\
1116 -many generate code for any architecture (PWR/PWRX/PPC)\n"));
1117 fprintf (stream, _("\
1118 -maltivec generate code for AltiVec\n\
1119 -me300 generate code for PowerPC e300 family\n\
1120 -me500, -me500x2 generate code for Motorola e500 core complex\n\
1121 -mspe generate code for Motorola SPE instructions\n\
1122 -mregnames Allow symbolic names for registers\n\
1123 -mno-regnames Do not allow symbolic names for registers\n"));
1124 #ifdef OBJ_ELF
1125 fprintf (stream, _("\
1126 -mrelocatable support for GCC's -mrelocatble option\n\
1127 -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
1128 -memb set PPC_EMB bit in ELF flags\n\
1129 -mlittle, -mlittle-endian, -l, -le\n\
1130 generate code for a little endian machine\n\
1131 -mbig, -mbig-endian, -b, -be\n\
1132 generate code for a big endian machine\n\
1133 -msolaris generate code for Solaris\n\
1134 -mno-solaris do not generate code for Solaris\n\
1135 -V print assembler version number\n\
1136 -Qy, -Qn ignored\n"));
1137 #endif
1138 }
1139
1140 /* Set ppc_cpu if it is not already set. */
1141
1142 static void
ppc_set_cpu()1143 ppc_set_cpu ()
1144 {
1145 const char *default_os = TARGET_OS;
1146 const char *default_cpu = TARGET_CPU;
1147
1148 if ((ppc_cpu & ~PPC_OPCODE_ANY) == 0)
1149 {
1150 if (ppc_obj64)
1151 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64;
1152 else if (strncmp (default_os, "aix", 3) == 0
1153 && default_os[3] >= '4' && default_os[3] <= '9')
1154 ppc_cpu |= PPC_OPCODE_COMMON | PPC_OPCODE_32;
1155 else if (strncmp (default_os, "aix3", 4) == 0)
1156 ppc_cpu |= PPC_OPCODE_POWER | PPC_OPCODE_32;
1157 else if (strcmp (default_cpu, "rs6000") == 0)
1158 ppc_cpu |= PPC_OPCODE_POWER | PPC_OPCODE_32;
1159 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1160 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32;
1161 else
1162 as_fatal (_("Unknown default cpu = %s, os = %s"),
1163 default_cpu, default_os);
1164 }
1165 }
1166
1167 /* Figure out the BFD architecture to use. This function and ppc_mach
1168 are called well before md_begin, when the output file is opened. */
1169
1170 enum bfd_architecture
ppc_arch()1171 ppc_arch ()
1172 {
1173 const char *default_cpu = TARGET_CPU;
1174 ppc_set_cpu ();
1175
1176 if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
1177 return bfd_arch_powerpc;
1178 else if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
1179 return bfd_arch_rs6000;
1180 else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
1181 {
1182 if (strcmp (default_cpu, "rs6000") == 0)
1183 return bfd_arch_rs6000;
1184 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1185 return bfd_arch_powerpc;
1186 }
1187
1188 as_fatal (_("Neither Power nor PowerPC opcodes were selected."));
1189 return bfd_arch_unknown;
1190 }
1191
1192 unsigned long
ppc_mach()1193 ppc_mach ()
1194 {
1195 if (ppc_obj64)
1196 return bfd_mach_ppc64;
1197 else if (ppc_arch () == bfd_arch_rs6000)
1198 return bfd_mach_rs6k;
1199 else
1200 return bfd_mach_ppc;
1201 }
1202
1203 extern char*
ppc_target_format()1204 ppc_target_format ()
1205 {
1206 #ifdef OBJ_COFF
1207 #ifdef TE_PE
1208 return target_big_endian ? "pe-powerpc" : "pe-powerpcle";
1209 #elif TE_POWERMAC
1210 return "xcoff-powermac";
1211 #else
1212 # ifdef TE_AIX5
1213 return (ppc_obj64 ? "aix5coff64-rs6000" : "aixcoff-rs6000");
1214 # else
1215 return (ppc_obj64 ? "aixcoff64-rs6000" : "aixcoff-rs6000");
1216 # endif
1217 #endif
1218 #endif
1219 #ifdef OBJ_ELF
1220 # ifdef TE_VXWORKS
1221 return "elf32-powerpc-vxworks";
1222 # else
1223 return (target_big_endian
1224 ? (ppc_obj64 ? "elf64-powerpc" : "elf32-powerpc")
1225 : (ppc_obj64 ? "elf64-powerpcle" : "elf32-powerpcle"));
1226 # endif
1227 #endif
1228 }
1229
1230 /* Insert opcodes and macros into hash tables. Called at startup and
1231 for .cpu pseudo. */
1232
1233 static void
ppc_setup_opcodes(void)1234 ppc_setup_opcodes (void)
1235 {
1236 register const struct powerpc_opcode *op;
1237 const struct powerpc_opcode *op_end;
1238 const struct powerpc_macro *macro;
1239 const struct powerpc_macro *macro_end;
1240 bfd_boolean dup_insn = FALSE;
1241
1242 if (ppc_hash != NULL)
1243 hash_die (ppc_hash);
1244 if (ppc_macro_hash != NULL)
1245 hash_die (ppc_macro_hash);
1246
1247 /* Insert the opcodes into a hash table. */
1248 ppc_hash = hash_new ();
1249
1250 op_end = powerpc_opcodes + powerpc_num_opcodes;
1251 for (op = powerpc_opcodes; op < op_end; op++)
1252 {
1253 know ((op->opcode & op->mask) == op->opcode);
1254
1255 if ((op->flags & ppc_cpu & ~(PPC_OPCODE_32 | PPC_OPCODE_64)) != 0
1256 && ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0
1257 || ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64))
1258 == (ppc_cpu & (PPC_OPCODE_32 | PPC_OPCODE_64)))
1259 || (ppc_cpu & PPC_OPCODE_64_BRIDGE) != 0)
1260 /* Certain instructions (eg: extsw) do not exist in the
1261 32-bit BookE instruction set, but they do exist in the
1262 64-bit BookE instruction set, and other PPC instruction
1263 sets. Check to see if the opcode has the BOOKE64 flag set.
1264 If it does make sure that the target CPU is not the BookE32. */
1265 && ((op->flags & PPC_OPCODE_BOOKE64) == 0
1266 || (ppc_cpu & PPC_OPCODE_BOOKE64) == PPC_OPCODE_BOOKE64
1267 || (ppc_cpu & PPC_OPCODE_BOOKE) == 0)
1268 && ((op->flags & (PPC_OPCODE_POWER4 | PPC_OPCODE_NOPOWER4)) == 0
1269 || ((op->flags & PPC_OPCODE_POWER4)
1270 == (ppc_cpu & PPC_OPCODE_POWER4)))
1271 && ((op->flags & PPC_OPCODE_POWER5) == 0
1272 || ((op->flags & PPC_OPCODE_POWER5)
1273 == (ppc_cpu & PPC_OPCODE_POWER5))))
1274 {
1275 const char *retval;
1276
1277 retval = hash_insert (ppc_hash, op->name, (PTR) op);
1278 if (retval != NULL)
1279 {
1280 /* Ignore Power duplicates for -m601. */
1281 if ((ppc_cpu & PPC_OPCODE_601) != 0
1282 && (op->flags & PPC_OPCODE_POWER) != 0)
1283 continue;
1284
1285 as_bad (_("Internal assembler error for instruction %s"),
1286 op->name);
1287 dup_insn = TRUE;
1288 }
1289 }
1290 }
1291
1292 if ((ppc_cpu & PPC_OPCODE_ANY) != 0)
1293 for (op = powerpc_opcodes; op < op_end; op++)
1294 hash_insert (ppc_hash, op->name, (PTR) op);
1295
1296 /* Insert the macros into a hash table. */
1297 ppc_macro_hash = hash_new ();
1298
1299 macro_end = powerpc_macros + powerpc_num_macros;
1300 for (macro = powerpc_macros; macro < macro_end; macro++)
1301 {
1302 if ((macro->flags & ppc_cpu) != 0)
1303 {
1304 const char *retval;
1305
1306 retval = hash_insert (ppc_macro_hash, macro->name, (PTR) macro);
1307 if (retval != (const char *) NULL)
1308 {
1309 as_bad (_("Internal assembler error for macro %s"), macro->name);
1310 dup_insn = TRUE;
1311 }
1312 }
1313 }
1314
1315 if (dup_insn)
1316 abort ();
1317 }
1318
1319 /* This function is called when the assembler starts up. It is called
1320 after the options have been parsed and the output file has been
1321 opened. */
1322
1323 void
md_begin()1324 md_begin ()
1325 {
1326 ppc_set_cpu ();
1327
1328 ppc_cie_data_alignment = ppc_obj64 ? -8 : -4;
1329
1330 #ifdef OBJ_ELF
1331 /* Set the ELF flags if desired. */
1332 if (ppc_flags && !msolaris)
1333 bfd_set_private_flags (stdoutput, ppc_flags);
1334 #endif
1335
1336 ppc_setup_opcodes ();
1337
1338 /* Tell the main code what the endianness is if it is not overridden
1339 by the user. */
1340 if (!set_target_endian)
1341 {
1342 set_target_endian = 1;
1343 target_big_endian = PPC_BIG_ENDIAN;
1344 }
1345
1346 #ifdef OBJ_XCOFF
1347 ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
1348
1349 /* Create dummy symbols to serve as initial csects. This forces the
1350 text csects to precede the data csects. These symbols will not
1351 be output. */
1352 ppc_text_csects = symbol_make ("dummy\001");
1353 symbol_get_tc (ppc_text_csects)->within = ppc_text_csects;
1354 ppc_data_csects = symbol_make ("dummy\001");
1355 symbol_get_tc (ppc_data_csects)->within = ppc_data_csects;
1356 #endif
1357
1358 #ifdef TE_PE
1359
1360 ppc_current_section = text_section;
1361 ppc_previous_section = 0;
1362
1363 #endif
1364 }
1365
1366 void
ppc_cleanup()1367 ppc_cleanup ()
1368 {
1369 #ifdef OBJ_ELF
1370 if (ppc_apuinfo_list == NULL)
1371 return;
1372
1373 /* Ok, so write the section info out. We have this layout:
1374
1375 byte data what
1376 ---- ---- ----
1377 0 8 length of "APUinfo\0"
1378 4 (n*4) number of APU's (4 bytes each)
1379 8 2 note type 2
1380 12 "APUinfo\0" name
1381 20 APU#1 first APU's info
1382 24 APU#2 second APU's info
1383 ... ...
1384 */
1385 {
1386 char *p;
1387 asection *seg = now_seg;
1388 subsegT subseg = now_subseg;
1389 asection *apuinfo_secp = (asection *) NULL;
1390 unsigned int i;
1391
1392 /* Create the .PPC.EMB.apuinfo section. */
1393 apuinfo_secp = subseg_new (".PPC.EMB.apuinfo", 0);
1394 bfd_set_section_flags (stdoutput,
1395 apuinfo_secp,
1396 SEC_HAS_CONTENTS | SEC_READONLY);
1397
1398 p = frag_more (4);
1399 md_number_to_chars (p, (valueT) 8, 4);
1400
1401 p = frag_more (4);
1402 md_number_to_chars (p, (valueT) ppc_apuinfo_num * 4, 4);
1403
1404 p = frag_more (4);
1405 md_number_to_chars (p, (valueT) 2, 4);
1406
1407 p = frag_more (8);
1408 strcpy (p, "APUinfo");
1409
1410 for (i = 0; i < ppc_apuinfo_num; i++)
1411 {
1412 p = frag_more (4);
1413 md_number_to_chars (p, (valueT) ppc_apuinfo_list[i], 4);
1414 }
1415
1416 frag_align (2, 0, 0);
1417
1418 /* We probably can't restore the current segment, for there likely
1419 isn't one yet... */
1420 if (seg && subseg)
1421 subseg_set (seg, subseg);
1422 }
1423 #endif
1424 }
1425
1426 /* Insert an operand value into an instruction. */
1427
1428 static unsigned long
ppc_insert_operand(insn,operand,val,file,line)1429 ppc_insert_operand (insn, operand, val, file, line)
1430 unsigned long insn;
1431 const struct powerpc_operand *operand;
1432 offsetT val;
1433 char *file;
1434 unsigned int line;
1435 {
1436 if (operand->bits != 32)
1437 {
1438 long min, max;
1439 offsetT test;
1440
1441 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
1442 {
1443 if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0)
1444 max = (1 << operand->bits) - 1;
1445 else
1446 max = (1 << (operand->bits - 1)) - 1;
1447 min = - (1 << (operand->bits - 1));
1448
1449 if (!ppc_obj64)
1450 {
1451 /* Some people write 32 bit hex constants with the sign
1452 extension done by hand. This shouldn't really be
1453 valid, but, to permit this code to assemble on a 64
1454 bit host, we sign extend the 32 bit value. */
1455 if (val > 0
1456 && (val & (offsetT) 0x80000000) != 0
1457 && (val & (offsetT) 0xffffffff) == val)
1458 {
1459 val -= 0x80000000;
1460 val -= 0x80000000;
1461 }
1462 }
1463 }
1464 else
1465 {
1466 max = (1 << operand->bits) - 1;
1467 min = 0;
1468 }
1469
1470 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
1471 test = - val;
1472 else
1473 test = val;
1474
1475 if (test < (offsetT) min || test > (offsetT) max)
1476 as_bad_value_out_of_range (_("operand"), test, (offsetT) min, (offsetT) max, file, line);
1477 }
1478
1479 if (operand->insert)
1480 {
1481 const char *errmsg;
1482
1483 errmsg = NULL;
1484 insn = (*operand->insert) (insn, (long) val, ppc_cpu, &errmsg);
1485 if (errmsg != (const char *) NULL)
1486 as_bad_where (file, line, errmsg);
1487 }
1488 else
1489 insn |= (((long) val & ((1 << operand->bits) - 1))
1490 << operand->shift);
1491
1492 return insn;
1493 }
1494
1495
1496 #ifdef OBJ_ELF
1497 /* Parse @got, etc. and return the desired relocation. */
1498 static bfd_reloc_code_real_type
ppc_elf_suffix(str_p,exp_p)1499 ppc_elf_suffix (str_p, exp_p)
1500 char **str_p;
1501 expressionS *exp_p;
1502 {
1503 struct map_bfd {
1504 char *string;
1505 unsigned int length : 8;
1506 unsigned int valid32 : 1;
1507 unsigned int valid64 : 1;
1508 unsigned int reloc;
1509 };
1510
1511 char ident[20];
1512 char *str = *str_p;
1513 char *str2;
1514 int ch;
1515 int len;
1516 const struct map_bfd *ptr;
1517
1518 #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc }
1519 #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc }
1520 #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc }
1521
1522 static const struct map_bfd mapping[] = {
1523 MAP ("l", BFD_RELOC_LO16),
1524 MAP ("h", BFD_RELOC_HI16),
1525 MAP ("ha", BFD_RELOC_HI16_S),
1526 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN),
1527 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN),
1528 MAP ("got", BFD_RELOC_16_GOTOFF),
1529 MAP ("got@l", BFD_RELOC_LO16_GOTOFF),
1530 MAP ("got@h", BFD_RELOC_HI16_GOTOFF),
1531 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF),
1532 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF),
1533 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF),
1534 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF),
1535 MAP ("copy", BFD_RELOC_PPC_COPY),
1536 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT),
1537 MAP ("sectoff", BFD_RELOC_16_BASEREL),
1538 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL),
1539 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL),
1540 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL),
1541 MAP ("tls", BFD_RELOC_PPC_TLS),
1542 MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD),
1543 MAP ("dtprel", BFD_RELOC_PPC_DTPREL),
1544 MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO),
1545 MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI),
1546 MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA),
1547 MAP ("tprel", BFD_RELOC_PPC_TPREL),
1548 MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO),
1549 MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI),
1550 MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA),
1551 MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16),
1552 MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO),
1553 MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI),
1554 MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA),
1555 MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16),
1556 MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO),
1557 MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI),
1558 MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA),
1559 MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16),
1560 MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO),
1561 MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI),
1562 MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA),
1563 MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16),
1564 MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO),
1565 MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI),
1566 MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA),
1567 MAP32 ("fixup", BFD_RELOC_CTOR),
1568 MAP32 ("plt", BFD_RELOC_24_PLT_PCREL),
1569 MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL),
1570 MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC),
1571 MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC),
1572 MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL),
1573 MAP32 ("sdarel", BFD_RELOC_GPREL16),
1574 MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32),
1575 MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16),
1576 MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO),
1577 MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI),
1578 MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA),
1579 MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16),
1580 MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL),
1581 MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16),
1582 MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21),
1583 MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF),
1584 MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16),
1585 MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO),
1586 MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI),
1587 MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA),
1588 MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD),
1589 MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA),
1590 MAP32 ("xgot", BFD_RELOC_PPC_TOC16),
1591 MAP64 ("higher", BFD_RELOC_PPC64_HIGHER),
1592 MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S),
1593 MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST),
1594 MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S),
1595 MAP64 ("tocbase", BFD_RELOC_PPC64_TOC),
1596 MAP64 ("toc", BFD_RELOC_PPC_TOC16),
1597 MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO),
1598 MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI),
1599 MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA),
1600 MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER),
1601 MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA),
1602 MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST),
1603 MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA),
1604 MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER),
1605 MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA),
1606 MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST),
1607 MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA),
1608 { (char *) 0, 0, 0, 0, BFD_RELOC_UNUSED }
1609 };
1610
1611 if (*str++ != '@')
1612 return BFD_RELOC_UNUSED;
1613
1614 for (ch = *str, str2 = ident;
1615 (str2 < ident + sizeof (ident) - 1
1616 && (ISALNUM (ch) || ch == '@'));
1617 ch = *++str)
1618 {
1619 *str2++ = TOLOWER (ch);
1620 }
1621
1622 *str2 = '\0';
1623 len = str2 - ident;
1624
1625 ch = ident[0];
1626 for (ptr = &mapping[0]; ptr->length > 0; ptr++)
1627 if (ch == ptr->string[0]
1628 && len == ptr->length
1629 && memcmp (ident, ptr->string, ptr->length) == 0
1630 && (ppc_obj64 ? ptr->valid64 : ptr->valid32))
1631 {
1632 int reloc = ptr->reloc;
1633
1634 if (!ppc_obj64)
1635 if (exp_p->X_add_number != 0
1636 && (reloc == (int) BFD_RELOC_16_GOTOFF
1637 || reloc == (int) BFD_RELOC_LO16_GOTOFF
1638 || reloc == (int) BFD_RELOC_HI16_GOTOFF
1639 || reloc == (int) BFD_RELOC_HI16_S_GOTOFF))
1640 as_warn (_("identifier+constant@got means identifier@got+constant"));
1641
1642 /* Now check for identifier@suffix+constant. */
1643 if (*str == '-' || *str == '+')
1644 {
1645 char *orig_line = input_line_pointer;
1646 expressionS new_exp;
1647
1648 input_line_pointer = str;
1649 expression (&new_exp);
1650 if (new_exp.X_op == O_constant)
1651 {
1652 exp_p->X_add_number += new_exp.X_add_number;
1653 str = input_line_pointer;
1654 }
1655
1656 if (&input_line_pointer != str_p)
1657 input_line_pointer = orig_line;
1658 }
1659 *str_p = str;
1660
1661 if (reloc == (int) BFD_RELOC_PPC64_TOC
1662 && exp_p->X_op == O_symbol
1663 && strcmp (S_GET_NAME (exp_p->X_add_symbol), ".TOC.") == 0)
1664 {
1665 /* Change the symbol so that the dummy .TOC. symbol can be
1666 omitted from the object file. */
1667 exp_p->X_add_symbol = &abs_symbol;
1668 }
1669
1670 return (bfd_reloc_code_real_type) reloc;
1671 }
1672
1673 return BFD_RELOC_UNUSED;
1674 }
1675
1676 /* Like normal .long/.short/.word, except support @got, etc.
1677 Clobbers input_line_pointer, checks end-of-line. */
1678 static void
ppc_elf_cons(nbytes)1679 ppc_elf_cons (nbytes)
1680 register int nbytes; /* 1=.byte, 2=.word, 4=.long, 8=.llong. */
1681 {
1682 expressionS exp;
1683 bfd_reloc_code_real_type reloc;
1684
1685 if (is_it_end_of_statement ())
1686 {
1687 demand_empty_rest_of_line ();
1688 return;
1689 }
1690
1691 do
1692 {
1693 expression (&exp);
1694 if (exp.X_op == O_symbol
1695 && *input_line_pointer == '@'
1696 && (reloc = ppc_elf_suffix (&input_line_pointer,
1697 &exp)) != BFD_RELOC_UNUSED)
1698 {
1699 reloc_howto_type *reloc_howto;
1700 int size;
1701
1702 reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
1703 size = bfd_get_reloc_size (reloc_howto);
1704
1705 if (size > nbytes)
1706 {
1707 as_bad (_("%s relocations do not fit in %d bytes\n"),
1708 reloc_howto->name, nbytes);
1709 }
1710 else
1711 {
1712 char *p;
1713 int offset;
1714
1715 p = frag_more (nbytes);
1716 offset = 0;
1717 if (target_big_endian)
1718 offset = nbytes - size;
1719 fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size,
1720 &exp, 0, reloc);
1721 }
1722 }
1723 else
1724 emit_expr (&exp, (unsigned int) nbytes);
1725 }
1726 while (*input_line_pointer++ == ',');
1727
1728 /* Put terminator back into stream. */
1729 input_line_pointer--;
1730 demand_empty_rest_of_line ();
1731 }
1732
1733 /* Solaris pseduo op to change to the .rodata section. */
1734 static void
ppc_elf_rdata(xxx)1735 ppc_elf_rdata (xxx)
1736 int xxx;
1737 {
1738 char *save_line = input_line_pointer;
1739 static char section[] = ".rodata\n";
1740
1741 /* Just pretend this is .section .rodata */
1742 input_line_pointer = section;
1743 obj_elf_section (xxx);
1744
1745 input_line_pointer = save_line;
1746 }
1747
1748 /* Pseudo op to make file scope bss items. */
1749 static void
ppc_elf_lcomm(xxx)1750 ppc_elf_lcomm (xxx)
1751 int xxx ATTRIBUTE_UNUSED;
1752 {
1753 register char *name;
1754 register char c;
1755 register char *p;
1756 offsetT size;
1757 register symbolS *symbolP;
1758 offsetT align;
1759 segT old_sec;
1760 int old_subsec;
1761 char *pfrag;
1762 int align2;
1763
1764 name = input_line_pointer;
1765 c = get_symbol_end ();
1766
1767 /* just after name is now '\0'. */
1768 p = input_line_pointer;
1769 *p = c;
1770 SKIP_WHITESPACE ();
1771 if (*input_line_pointer != ',')
1772 {
1773 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
1774 ignore_rest_of_line ();
1775 return;
1776 }
1777
1778 input_line_pointer++; /* skip ',' */
1779 if ((size = get_absolute_expression ()) < 0)
1780 {
1781 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
1782 ignore_rest_of_line ();
1783 return;
1784 }
1785
1786 /* The third argument to .lcomm is the alignment. */
1787 if (*input_line_pointer != ',')
1788 align = 8;
1789 else
1790 {
1791 ++input_line_pointer;
1792 align = get_absolute_expression ();
1793 if (align <= 0)
1794 {
1795 as_warn (_("ignoring bad alignment"));
1796 align = 8;
1797 }
1798 }
1799
1800 *p = 0;
1801 symbolP = symbol_find_or_make (name);
1802 *p = c;
1803
1804 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
1805 {
1806 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
1807 S_GET_NAME (symbolP));
1808 ignore_rest_of_line ();
1809 return;
1810 }
1811
1812 if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
1813 {
1814 as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
1815 S_GET_NAME (symbolP),
1816 (long) S_GET_VALUE (symbolP),
1817 (long) size);
1818
1819 ignore_rest_of_line ();
1820 return;
1821 }
1822
1823 /* Allocate_bss. */
1824 old_sec = now_seg;
1825 old_subsec = now_subseg;
1826 if (align)
1827 {
1828 /* Convert to a power of 2 alignment. */
1829 for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
1830 if (align != 1)
1831 {
1832 as_bad (_("Common alignment not a power of 2"));
1833 ignore_rest_of_line ();
1834 return;
1835 }
1836 }
1837 else
1838 align2 = 0;
1839
1840 record_alignment (bss_section, align2);
1841 subseg_set (bss_section, 0);
1842 if (align2)
1843 frag_align (align2, 0, 0);
1844 if (S_GET_SEGMENT (symbolP) == bss_section)
1845 symbol_get_frag (symbolP)->fr_symbol = 0;
1846 symbol_set_frag (symbolP, frag_now);
1847 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
1848 (char *) 0);
1849 *pfrag = 0;
1850 S_SET_SIZE (symbolP, size);
1851 S_SET_SEGMENT (symbolP, bss_section);
1852 subseg_set (old_sec, old_subsec);
1853 demand_empty_rest_of_line ();
1854 }
1855
1856 /* Validate any relocations emitted for -mrelocatable, possibly adding
1857 fixups for word relocations in writable segments, so we can adjust
1858 them at runtime. */
1859 static void
ppc_elf_validate_fix(fixp,seg)1860 ppc_elf_validate_fix (fixp, seg)
1861 fixS *fixp;
1862 segT seg;
1863 {
1864 if (fixp->fx_done || fixp->fx_pcrel)
1865 return;
1866
1867 switch (shlib)
1868 {
1869 case SHLIB_NONE:
1870 case SHLIB_PIC:
1871 return;
1872
1873 case SHLIB_MRELOCATABLE:
1874 if (fixp->fx_r_type <= BFD_RELOC_UNUSED
1875 && fixp->fx_r_type != BFD_RELOC_16_GOTOFF
1876 && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
1877 && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
1878 && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
1879 && fixp->fx_r_type != BFD_RELOC_16_BASEREL
1880 && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
1881 && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
1882 && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
1883 && (seg->flags & SEC_LOAD) != 0
1884 && strcmp (segment_name (seg), ".got2") != 0
1885 && strcmp (segment_name (seg), ".dtors") != 0
1886 && strcmp (segment_name (seg), ".ctors") != 0
1887 && strcmp (segment_name (seg), ".fixup") != 0
1888 && strcmp (segment_name (seg), ".gcc_except_table") != 0
1889 && strcmp (segment_name (seg), ".eh_frame") != 0
1890 && strcmp (segment_name (seg), ".ex_shared") != 0)
1891 {
1892 if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
1893 || fixp->fx_r_type != BFD_RELOC_CTOR)
1894 {
1895 as_bad_where (fixp->fx_file, fixp->fx_line,
1896 _("Relocation cannot be done when using -mrelocatable"));
1897 }
1898 }
1899 return;
1900 }
1901 }
1902
1903 /* Prevent elf_frob_file_before_adjust removing a weak undefined
1904 function descriptor sym if the corresponding code sym is used. */
1905
1906 void
ppc_frob_file_before_adjust()1907 ppc_frob_file_before_adjust ()
1908 {
1909 symbolS *symp;
1910 asection *toc;
1911
1912 if (!ppc_obj64)
1913 return;
1914
1915 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
1916 {
1917 const char *name;
1918 char *dotname;
1919 symbolS *dotsym;
1920 size_t len;
1921
1922 name = S_GET_NAME (symp);
1923 if (name[0] == '.')
1924 continue;
1925
1926 if (! S_IS_WEAK (symp)
1927 || S_IS_DEFINED (symp))
1928 continue;
1929
1930 len = strlen (name) + 1;
1931 dotname = xmalloc (len + 1);
1932 dotname[0] = '.';
1933 memcpy (dotname + 1, name, len);
1934 dotsym = symbol_find_noref (dotname, 1);
1935 free (dotname);
1936 if (dotsym != NULL && (symbol_used_p (dotsym)
1937 || symbol_used_in_reloc_p (dotsym)))
1938 symbol_mark_used (symp);
1939
1940 }
1941
1942 toc = bfd_get_section_by_name (stdoutput, ".toc");
1943 if (toc != NULL
1944 && bfd_section_size (stdoutput, toc) > 0x10000)
1945 as_warn (_("TOC section size exceeds 64k"));
1946
1947 /* Don't emit .TOC. symbol. */
1948 symp = symbol_find (".TOC.");
1949 if (symp != NULL)
1950 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
1951 }
1952 #endif /* OBJ_ELF */
1953
1954 #ifdef TE_PE
1955
1956 /*
1957 * Summary of parse_toc_entry.
1958 *
1959 * in: Input_line_pointer points to the '[' in one of:
1960 *
1961 * [toc] [tocv] [toc32] [toc64]
1962 *
1963 * Anything else is an error of one kind or another.
1964 *
1965 * out:
1966 * return value: success or failure
1967 * toc_kind: kind of toc reference
1968 * input_line_pointer:
1969 * success: first char after the ']'
1970 * failure: unchanged
1971 *
1972 * settings:
1973 *
1974 * [toc] - rv == success, toc_kind = default_toc
1975 * [tocv] - rv == success, toc_kind = data_in_toc
1976 * [toc32] - rv == success, toc_kind = must_be_32
1977 * [toc64] - rv == success, toc_kind = must_be_64
1978 *
1979 */
1980
1981 enum toc_size_qualifier
1982 {
1983 default_toc, /* The toc cell constructed should be the system default size */
1984 data_in_toc, /* This is a direct reference to a toc cell */
1985 must_be_32, /* The toc cell constructed must be 32 bits wide */
1986 must_be_64 /* The toc cell constructed must be 64 bits wide */
1987 };
1988
1989 static int
parse_toc_entry(toc_kind)1990 parse_toc_entry (toc_kind)
1991 enum toc_size_qualifier *toc_kind;
1992 {
1993 char *start;
1994 char *toc_spec;
1995 char c;
1996 enum toc_size_qualifier t;
1997
1998 /* Save the input_line_pointer. */
1999 start = input_line_pointer;
2000
2001 /* Skip over the '[' , and whitespace. */
2002 ++input_line_pointer;
2003 SKIP_WHITESPACE ();
2004
2005 /* Find the spelling of the operand. */
2006 toc_spec = input_line_pointer;
2007 c = get_symbol_end ();
2008
2009 if (strcmp (toc_spec, "toc") == 0)
2010 {
2011 t = default_toc;
2012 }
2013 else if (strcmp (toc_spec, "tocv") == 0)
2014 {
2015 t = data_in_toc;
2016 }
2017 else if (strcmp (toc_spec, "toc32") == 0)
2018 {
2019 t = must_be_32;
2020 }
2021 else if (strcmp (toc_spec, "toc64") == 0)
2022 {
2023 t = must_be_64;
2024 }
2025 else
2026 {
2027 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec);
2028 *input_line_pointer = c;
2029 input_line_pointer = start;
2030 return 0;
2031 }
2032
2033 /* Now find the ']'. */
2034 *input_line_pointer = c;
2035
2036 SKIP_WHITESPACE (); /* leading whitespace could be there. */
2037 c = *input_line_pointer++; /* input_line_pointer->past char in c. */
2038
2039 if (c != ']')
2040 {
2041 as_bad (_("syntax error: expected `]', found `%c'"), c);
2042 input_line_pointer = start;
2043 return 0;
2044 }
2045
2046 *toc_kind = t;
2047 return 1;
2048 }
2049 #endif
2050
2051
2052 #ifdef OBJ_ELF
2053 #define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff))
2054 static void
ppc_apuinfo_section_add(apu,version)2055 ppc_apuinfo_section_add (apu, version)
2056 unsigned int apu, version;
2057 {
2058 unsigned int i;
2059
2060 /* Check we don't already exist. */
2061 for (i = 0; i < ppc_apuinfo_num; i++)
2062 if (ppc_apuinfo_list[i] == APUID (apu, version))
2063 return;
2064
2065 if (ppc_apuinfo_num == ppc_apuinfo_num_alloc)
2066 {
2067 if (ppc_apuinfo_num_alloc == 0)
2068 {
2069 ppc_apuinfo_num_alloc = 4;
2070 ppc_apuinfo_list = (unsigned long *)
2071 xmalloc (sizeof (unsigned long) * ppc_apuinfo_num_alloc);
2072 }
2073 else
2074 {
2075 ppc_apuinfo_num_alloc += 4;
2076 ppc_apuinfo_list = (unsigned long *) xrealloc (ppc_apuinfo_list,
2077 sizeof (unsigned long) * ppc_apuinfo_num_alloc);
2078 }
2079 }
2080 ppc_apuinfo_list[ppc_apuinfo_num++] = APUID (apu, version);
2081 }
2082 #undef APUID
2083 #endif
2084
2085
2086 /* We need to keep a list of fixups. We can't simply generate them as
2087 we go, because that would require us to first create the frag, and
2088 that would screw up references to ``.''. */
2089
2090 struct ppc_fixup
2091 {
2092 expressionS exp;
2093 int opindex;
2094 bfd_reloc_code_real_type reloc;
2095 };
2096
2097 #define MAX_INSN_FIXUPS (5)
2098
2099 /* This routine is called for each instruction to be assembled. */
2100
2101 void
md_assemble(str)2102 md_assemble (str)
2103 char *str;
2104 {
2105 char *s;
2106 const struct powerpc_opcode *opcode;
2107 unsigned long insn;
2108 const unsigned char *opindex_ptr;
2109 int skip_optional;
2110 int need_paren;
2111 int next_opindex;
2112 struct ppc_fixup fixups[MAX_INSN_FIXUPS];
2113 int fc;
2114 char *f;
2115 int addr_mod;
2116 int i;
2117 #ifdef OBJ_ELF
2118 bfd_reloc_code_real_type reloc;
2119 #endif
2120
2121 /* Get the opcode. */
2122 for (s = str; *s != '\0' && ! ISSPACE (*s); s++)
2123 ;
2124 if (*s != '\0')
2125 *s++ = '\0';
2126
2127 /* Look up the opcode in the hash table. */
2128 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str);
2129 if (opcode == (const struct powerpc_opcode *) NULL)
2130 {
2131 const struct powerpc_macro *macro;
2132
2133 macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str);
2134 if (macro == (const struct powerpc_macro *) NULL)
2135 as_bad (_("Unrecognized opcode: `%s'"), str);
2136 else
2137 ppc_macro (s, macro);
2138
2139 return;
2140 }
2141
2142 insn = opcode->opcode;
2143
2144 str = s;
2145 while (ISSPACE (*str))
2146 ++str;
2147
2148 /* PowerPC operands are just expressions. The only real issue is
2149 that a few operand types are optional. All cases which might use
2150 an optional operand separate the operands only with commas (in some
2151 cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never
2152 have optional operands). Most instructions with optional operands
2153 have only one. Those that have more than one optional operand can
2154 take either all their operands or none. So, before we start seriously
2155 parsing the operands, we check to see if we have optional operands,
2156 and if we do, we count the number of commas to see which operands
2157 have been omitted. */
2158 skip_optional = 0;
2159 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
2160 {
2161 const struct powerpc_operand *operand;
2162
2163 operand = &powerpc_operands[*opindex_ptr];
2164 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
2165 {
2166 unsigned int opcount;
2167 unsigned int num_operands_expected;
2168 unsigned int i;
2169
2170 /* There is an optional operand. Count the number of
2171 commas in the input line. */
2172 if (*str == '\0')
2173 opcount = 0;
2174 else
2175 {
2176 opcount = 1;
2177 s = str;
2178 while ((s = strchr (s, ',')) != (char *) NULL)
2179 {
2180 ++opcount;
2181 ++s;
2182 }
2183 }
2184
2185 /* Compute the number of expected operands.
2186 Do not count fake operands. */
2187 for (num_operands_expected = 0, i = 0; opcode->operands[i]; i ++)
2188 if ((powerpc_operands [opcode->operands[i]].flags & PPC_OPERAND_FAKE) == 0)
2189 ++ num_operands_expected;
2190
2191 /* If there are fewer operands in the line then are called
2192 for by the instruction, we want to skip the optional
2193 operands. */
2194 if (opcount < num_operands_expected)
2195 skip_optional = 1;
2196
2197 break;
2198 }
2199 }
2200
2201 /* Gather the operands. */
2202 need_paren = 0;
2203 next_opindex = 0;
2204 fc = 0;
2205 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
2206 {
2207 const struct powerpc_operand *operand;
2208 const char *errmsg;
2209 char *hold;
2210 expressionS ex;
2211 char endc;
2212
2213 if (next_opindex == 0)
2214 operand = &powerpc_operands[*opindex_ptr];
2215 else
2216 {
2217 operand = &powerpc_operands[next_opindex];
2218 next_opindex = 0;
2219 }
2220 errmsg = NULL;
2221
2222 /* If this is a fake operand, then we do not expect anything
2223 from the input. */
2224 if ((operand->flags & PPC_OPERAND_FAKE) != 0)
2225 {
2226 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg);
2227 if (errmsg != (const char *) NULL)
2228 as_bad (errmsg);
2229 continue;
2230 }
2231
2232 /* If this is an optional operand, and we are skipping it, just
2233 insert a zero. */
2234 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
2235 && skip_optional)
2236 {
2237 if (operand->insert)
2238 {
2239 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg);
2240 if (errmsg != (const char *) NULL)
2241 as_bad (errmsg);
2242 }
2243 if ((operand->flags & PPC_OPERAND_NEXT) != 0)
2244 next_opindex = *opindex_ptr + 1;
2245 continue;
2246 }
2247
2248 /* Gather the operand. */
2249 hold = input_line_pointer;
2250 input_line_pointer = str;
2251
2252 #ifdef TE_PE
2253 if (*input_line_pointer == '[')
2254 {
2255 /* We are expecting something like the second argument here:
2256 *
2257 * lwz r4,[toc].GS.0.static_int(rtoc)
2258 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2259 * The argument following the `]' must be a symbol name, and the
2260 * register must be the toc register: 'rtoc' or '2'
2261 *
2262 * The effect is to 0 as the displacement field
2263 * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
2264 * the appropriate variation) reloc against it based on the symbol.
2265 * The linker will build the toc, and insert the resolved toc offset.
2266 *
2267 * Note:
2268 * o The size of the toc entry is currently assumed to be
2269 * 32 bits. This should not be assumed to be a hard coded
2270 * number.
2271 * o In an effort to cope with a change from 32 to 64 bits,
2272 * there are also toc entries that are specified to be
2273 * either 32 or 64 bits:
2274 * lwz r4,[toc32].GS.0.static_int(rtoc)
2275 * lwz r4,[toc64].GS.0.static_int(rtoc)
2276 * These demand toc entries of the specified size, and the
2277 * instruction probably requires it.
2278 */
2279
2280 int valid_toc;
2281 enum toc_size_qualifier toc_kind;
2282 bfd_reloc_code_real_type toc_reloc;
2283
2284 /* Go parse off the [tocXX] part. */
2285 valid_toc = parse_toc_entry (&toc_kind);
2286
2287 if (!valid_toc)
2288 {
2289 /* Note: message has already been issued.
2290 FIXME: what sort of recovery should we do?
2291 demand_rest_of_line (); return; ? */
2292 }
2293
2294 /* Now get the symbol following the ']'. */
2295 expression (&ex);
2296
2297 switch (toc_kind)
2298 {
2299 case default_toc:
2300 /* In this case, we may not have seen the symbol yet,
2301 since it is allowed to appear on a .extern or .globl
2302 or just be a label in the .data section. */
2303 toc_reloc = BFD_RELOC_PPC_TOC16;
2304 break;
2305 case data_in_toc:
2306 /* 1. The symbol must be defined and either in the toc
2307 section, or a global.
2308 2. The reloc generated must have the TOCDEFN flag set
2309 in upper bit mess of the reloc type.
2310 FIXME: It's a little confusing what the tocv
2311 qualifier can be used for. At the very least, I've
2312 seen three uses, only one of which I'm sure I can
2313 explain. */
2314 if (ex.X_op == O_symbol)
2315 {
2316 assert (ex.X_add_symbol != NULL);
2317 if (symbol_get_bfdsym (ex.X_add_symbol)->section
2318 != tocdata_section)
2319 {
2320 as_bad (_("[tocv] symbol is not a toc symbol"));
2321 }
2322 }
2323
2324 toc_reloc = BFD_RELOC_PPC_TOC16;
2325 break;
2326 case must_be_32:
2327 /* FIXME: these next two specifically specify 32/64 bit
2328 toc entries. We don't support them today. Is this
2329 the right way to say that? */
2330 toc_reloc = BFD_RELOC_UNUSED;
2331 as_bad (_("Unimplemented toc32 expression modifier"));
2332 break;
2333 case must_be_64:
2334 /* FIXME: see above. */
2335 toc_reloc = BFD_RELOC_UNUSED;
2336 as_bad (_("Unimplemented toc64 expression modifier"));
2337 break;
2338 default:
2339 fprintf (stderr,
2340 _("Unexpected return value [%d] from parse_toc_entry!\n"),
2341 toc_kind);
2342 abort ();
2343 break;
2344 }
2345
2346 /* We need to generate a fixup for this expression. */
2347 if (fc >= MAX_INSN_FIXUPS)
2348 as_fatal (_("too many fixups"));
2349
2350 fixups[fc].reloc = toc_reloc;
2351 fixups[fc].exp = ex;
2352 fixups[fc].opindex = *opindex_ptr;
2353 ++fc;
2354
2355 /* Ok. We've set up the fixup for the instruction. Now make it
2356 look like the constant 0 was found here. */
2357 ex.X_unsigned = 1;
2358 ex.X_op = O_constant;
2359 ex.X_add_number = 0;
2360 ex.X_add_symbol = NULL;
2361 ex.X_op_symbol = NULL;
2362 }
2363
2364 else
2365 #endif /* TE_PE */
2366 {
2367 if (! register_name (&ex))
2368 {
2369 if ((operand->flags & PPC_OPERAND_CR) != 0)
2370 cr_operand = TRUE;
2371 expression (&ex);
2372 cr_operand = FALSE;
2373 }
2374 }
2375
2376 str = input_line_pointer;
2377 input_line_pointer = hold;
2378
2379 if (ex.X_op == O_illegal)
2380 as_bad (_("illegal operand"));
2381 else if (ex.X_op == O_absent)
2382 as_bad (_("missing operand"));
2383 else if (ex.X_op == O_register)
2384 {
2385 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2386 (char *) NULL, 0);
2387 }
2388 else if (ex.X_op == O_constant)
2389 {
2390 #ifdef OBJ_ELF
2391 /* Allow @HA, @L, @H on constants. */
2392 char *orig_str = str;
2393
2394 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2395 switch (reloc)
2396 {
2397 default:
2398 str = orig_str;
2399 break;
2400
2401 case BFD_RELOC_LO16:
2402 /* X_unsigned is the default, so if the user has done
2403 something which cleared it, we always produce a
2404 signed value. */
2405 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2406 ex.X_add_number &= 0xffff;
2407 else
2408 ex.X_add_number = SEX16 (ex.X_add_number);
2409 break;
2410
2411 case BFD_RELOC_HI16:
2412 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2413 ex.X_add_number = PPC_HI (ex.X_add_number);
2414 else
2415 ex.X_add_number = SEX16 (PPC_HI (ex.X_add_number));
2416 break;
2417
2418 case BFD_RELOC_HI16_S:
2419 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2420 ex.X_add_number = PPC_HA (ex.X_add_number);
2421 else
2422 ex.X_add_number = SEX16 (PPC_HA (ex.X_add_number));
2423 break;
2424
2425 case BFD_RELOC_PPC64_HIGHER:
2426 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2427 ex.X_add_number = PPC_HIGHER (ex.X_add_number);
2428 else
2429 ex.X_add_number = SEX16 (PPC_HIGHER (ex.X_add_number));
2430 break;
2431
2432 case BFD_RELOC_PPC64_HIGHER_S:
2433 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2434 ex.X_add_number = PPC_HIGHERA (ex.X_add_number);
2435 else
2436 ex.X_add_number = SEX16 (PPC_HIGHERA (ex.X_add_number));
2437 break;
2438
2439 case BFD_RELOC_PPC64_HIGHEST:
2440 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2441 ex.X_add_number = PPC_HIGHEST (ex.X_add_number);
2442 else
2443 ex.X_add_number = SEX16 (PPC_HIGHEST (ex.X_add_number));
2444 break;
2445
2446 case BFD_RELOC_PPC64_HIGHEST_S:
2447 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2448 ex.X_add_number = PPC_HIGHESTA (ex.X_add_number);
2449 else
2450 ex.X_add_number = SEX16 (PPC_HIGHESTA (ex.X_add_number));
2451 break;
2452 }
2453 #endif /* OBJ_ELF */
2454 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2455 (char *) NULL, 0);
2456 }
2457 #ifdef OBJ_ELF
2458 else if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2459 {
2460 /* Some TLS tweaks. */
2461 switch (reloc)
2462 {
2463 default:
2464 break;
2465 case BFD_RELOC_PPC_TLS:
2466 insn = ppc_insert_operand (insn, operand, ppc_obj64 ? 13 : 2,
2467 (char *) NULL, 0);
2468 break;
2469 /* We'll only use the 32 (or 64) bit form of these relocations
2470 in constants. Instructions get the 16 bit form. */
2471 case BFD_RELOC_PPC_DTPREL:
2472 reloc = BFD_RELOC_PPC_DTPREL16;
2473 break;
2474 case BFD_RELOC_PPC_TPREL:
2475 reloc = BFD_RELOC_PPC_TPREL16;
2476 break;
2477 }
2478
2479 /* For the absolute forms of branches, convert the PC
2480 relative form back into the absolute. */
2481 if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
2482 {
2483 switch (reloc)
2484 {
2485 case BFD_RELOC_PPC_B26:
2486 reloc = BFD_RELOC_PPC_BA26;
2487 break;
2488 case BFD_RELOC_PPC_B16:
2489 reloc = BFD_RELOC_PPC_BA16;
2490 break;
2491 case BFD_RELOC_PPC_B16_BRTAKEN:
2492 reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
2493 break;
2494 case BFD_RELOC_PPC_B16_BRNTAKEN:
2495 reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
2496 break;
2497 default:
2498 break;
2499 }
2500 }
2501
2502 if (ppc_obj64
2503 && (operand->flags & (PPC_OPERAND_DS | PPC_OPERAND_DQ)) != 0)
2504 {
2505 switch (reloc)
2506 {
2507 case BFD_RELOC_16:
2508 reloc = BFD_RELOC_PPC64_ADDR16_DS;
2509 break;
2510 case BFD_RELOC_LO16:
2511 reloc = BFD_RELOC_PPC64_ADDR16_LO_DS;
2512 break;
2513 case BFD_RELOC_16_GOTOFF:
2514 reloc = BFD_RELOC_PPC64_GOT16_DS;
2515 break;
2516 case BFD_RELOC_LO16_GOTOFF:
2517 reloc = BFD_RELOC_PPC64_GOT16_LO_DS;
2518 break;
2519 case BFD_RELOC_LO16_PLTOFF:
2520 reloc = BFD_RELOC_PPC64_PLT16_LO_DS;
2521 break;
2522 case BFD_RELOC_16_BASEREL:
2523 reloc = BFD_RELOC_PPC64_SECTOFF_DS;
2524 break;
2525 case BFD_RELOC_LO16_BASEREL:
2526 reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS;
2527 break;
2528 case BFD_RELOC_PPC_TOC16:
2529 reloc = BFD_RELOC_PPC64_TOC16_DS;
2530 break;
2531 case BFD_RELOC_PPC64_TOC16_LO:
2532 reloc = BFD_RELOC_PPC64_TOC16_LO_DS;
2533 break;
2534 case BFD_RELOC_PPC64_PLTGOT16:
2535 reloc = BFD_RELOC_PPC64_PLTGOT16_DS;
2536 break;
2537 case BFD_RELOC_PPC64_PLTGOT16_LO:
2538 reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS;
2539 break;
2540 case BFD_RELOC_PPC_DTPREL16:
2541 reloc = BFD_RELOC_PPC64_DTPREL16_DS;
2542 break;
2543 case BFD_RELOC_PPC_DTPREL16_LO:
2544 reloc = BFD_RELOC_PPC64_DTPREL16_LO_DS;
2545 break;
2546 case BFD_RELOC_PPC_TPREL16:
2547 reloc = BFD_RELOC_PPC64_TPREL16_DS;
2548 break;
2549 case BFD_RELOC_PPC_TPREL16_LO:
2550 reloc = BFD_RELOC_PPC64_TPREL16_LO_DS;
2551 break;
2552 case BFD_RELOC_PPC_GOT_DTPREL16:
2553 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
2554 case BFD_RELOC_PPC_GOT_TPREL16:
2555 case BFD_RELOC_PPC_GOT_TPREL16_LO:
2556 break;
2557 default:
2558 as_bad (_("unsupported relocation for DS offset field"));
2559 break;
2560 }
2561 }
2562
2563 /* We need to generate a fixup for this expression. */
2564 if (fc >= MAX_INSN_FIXUPS)
2565 as_fatal (_("too many fixups"));
2566 fixups[fc].exp = ex;
2567 fixups[fc].opindex = 0;
2568 fixups[fc].reloc = reloc;
2569 ++fc;
2570 }
2571 #endif /* OBJ_ELF */
2572
2573 else
2574 {
2575 /* We need to generate a fixup for this expression. */
2576 if (fc >= MAX_INSN_FIXUPS)
2577 as_fatal (_("too many fixups"));
2578 fixups[fc].exp = ex;
2579 fixups[fc].opindex = *opindex_ptr;
2580 fixups[fc].reloc = BFD_RELOC_UNUSED;
2581 ++fc;
2582 }
2583
2584 if (need_paren)
2585 {
2586 endc = ')';
2587 need_paren = 0;
2588 }
2589 else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
2590 {
2591 endc = '(';
2592 need_paren = 1;
2593 }
2594 else
2595 endc = ',';
2596
2597 /* The call to expression should have advanced str past any
2598 whitespace. */
2599 if (*str != endc
2600 && (endc != ',' || *str != '\0'))
2601 {
2602 as_bad (_("syntax error; found `%c' but expected `%c'"), *str, endc);
2603 break;
2604 }
2605
2606 if (*str != '\0')
2607 ++str;
2608 }
2609
2610 while (ISSPACE (*str))
2611 ++str;
2612
2613 if (*str != '\0')
2614 as_bad (_("junk at end of line: `%s'"), str);
2615
2616 #ifdef OBJ_ELF
2617 /* Do we need/want a APUinfo section? */
2618 if (ppc_cpu & (PPC_OPCODE_SPE
2619 | PPC_OPCODE_ISEL | PPC_OPCODE_EFS
2620 | PPC_OPCODE_BRLOCK | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK
2621 | PPC_OPCODE_RFMCI))
2622 {
2623 /* These are all version "1". */
2624 if (opcode->flags & PPC_OPCODE_SPE)
2625 ppc_apuinfo_section_add (PPC_APUINFO_SPE, 1);
2626 if (opcode->flags & PPC_OPCODE_ISEL)
2627 ppc_apuinfo_section_add (PPC_APUINFO_ISEL, 1);
2628 if (opcode->flags & PPC_OPCODE_EFS)
2629 ppc_apuinfo_section_add (PPC_APUINFO_EFS, 1);
2630 if (opcode->flags & PPC_OPCODE_BRLOCK)
2631 ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK, 1);
2632 if (opcode->flags & PPC_OPCODE_PMR)
2633 ppc_apuinfo_section_add (PPC_APUINFO_PMR, 1);
2634 if (opcode->flags & PPC_OPCODE_CACHELCK)
2635 ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK, 1);
2636 if (opcode->flags & PPC_OPCODE_RFMCI)
2637 ppc_apuinfo_section_add (PPC_APUINFO_RFMCI, 1);
2638 }
2639 #endif
2640
2641 /* Write out the instruction. */
2642 f = frag_more (4);
2643 addr_mod = frag_now_fix () & 3;
2644 if (frag_now->has_code && frag_now->insn_addr != addr_mod)
2645 as_bad (_("instruction address is not a multiple of 4"));
2646 frag_now->insn_addr = addr_mod;
2647 frag_now->has_code = 1;
2648 md_number_to_chars (f, insn, 4);
2649
2650 #ifdef OBJ_ELF
2651 dwarf2_emit_insn (4);
2652 #endif
2653
2654 /* Create any fixups. At this point we do not use a
2655 bfd_reloc_code_real_type, but instead just use the
2656 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2657 handle fixups for any operand type, although that is admittedly
2658 not a very exciting feature. We pick a BFD reloc type in
2659 md_apply_fix. */
2660 for (i = 0; i < fc; i++)
2661 {
2662 const struct powerpc_operand *operand;
2663
2664 operand = &powerpc_operands[fixups[i].opindex];
2665 if (fixups[i].reloc != BFD_RELOC_UNUSED)
2666 {
2667 reloc_howto_type *reloc_howto;
2668 int size;
2669 int offset;
2670 fixS *fixP;
2671
2672 reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
2673 if (!reloc_howto)
2674 abort ();
2675
2676 size = bfd_get_reloc_size (reloc_howto);
2677 offset = target_big_endian ? (4 - size) : 0;
2678
2679 if (size < 1 || size > 4)
2680 abort ();
2681
2682 fixP = fix_new_exp (frag_now,
2683 f - frag_now->fr_literal + offset,
2684 size,
2685 &fixups[i].exp,
2686 reloc_howto->pc_relative,
2687 fixups[i].reloc);
2688
2689 /* Turn off complaints that the addend is too large for things like
2690 foo+100000@ha. */
2691 switch (fixups[i].reloc)
2692 {
2693 case BFD_RELOC_16_GOTOFF:
2694 case BFD_RELOC_PPC_TOC16:
2695 case BFD_RELOC_LO16:
2696 case BFD_RELOC_HI16:
2697 case BFD_RELOC_HI16_S:
2698 #ifdef OBJ_ELF
2699 case BFD_RELOC_PPC64_HIGHER:
2700 case BFD_RELOC_PPC64_HIGHER_S:
2701 case BFD_RELOC_PPC64_HIGHEST:
2702 case BFD_RELOC_PPC64_HIGHEST_S:
2703 #endif
2704 fixP->fx_no_overflow = 1;
2705 break;
2706 default:
2707 break;
2708 }
2709 }
2710 else
2711 fix_new_exp (frag_now,
2712 f - frag_now->fr_literal,
2713 4,
2714 &fixups[i].exp,
2715 (operand->flags & PPC_OPERAND_RELATIVE) != 0,
2716 ((bfd_reloc_code_real_type)
2717 (fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
2718 }
2719 }
2720
2721 /* Handle a macro. Gather all the operands, transform them as
2722 described by the macro, and call md_assemble recursively. All the
2723 operands are separated by commas; we don't accept parentheses
2724 around operands here. */
2725
2726 static void
ppc_macro(str,macro)2727 ppc_macro (str, macro)
2728 char *str;
2729 const struct powerpc_macro *macro;
2730 {
2731 char *operands[10];
2732 unsigned int count;
2733 char *s;
2734 unsigned int len;
2735 const char *format;
2736 int arg;
2737 char *send;
2738 char *complete;
2739
2740 /* Gather the users operands into the operands array. */
2741 count = 0;
2742 s = str;
2743 while (1)
2744 {
2745 if (count >= sizeof operands / sizeof operands[0])
2746 break;
2747 operands[count++] = s;
2748 s = strchr (s, ',');
2749 if (s == (char *) NULL)
2750 break;
2751 *s++ = '\0';
2752 }
2753
2754 if (count != macro->operands)
2755 {
2756 as_bad (_("wrong number of operands"));
2757 return;
2758 }
2759
2760 /* Work out how large the string must be (the size is unbounded
2761 because it includes user input). */
2762 len = 0;
2763 format = macro->format;
2764 while (*format != '\0')
2765 {
2766 if (*format != '%')
2767 {
2768 ++len;
2769 ++format;
2770 }
2771 else
2772 {
2773 arg = strtol (format + 1, &send, 10);
2774 know (send != format && arg >= 0 && arg < count);
2775 len += strlen (operands[arg]);
2776 format = send;
2777 }
2778 }
2779
2780 /* Put the string together. */
2781 complete = s = (char *) alloca (len + 1);
2782 format = macro->format;
2783 while (*format != '\0')
2784 {
2785 if (*format != '%')
2786 *s++ = *format++;
2787 else
2788 {
2789 arg = strtol (format + 1, &send, 10);
2790 strcpy (s, operands[arg]);
2791 s += strlen (s);
2792 format = send;
2793 }
2794 }
2795 *s = '\0';
2796
2797 /* Assemble the constructed instruction. */
2798 md_assemble (complete);
2799 }
2800
2801 #ifdef OBJ_ELF
2802 /* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED. */
2803
2804 int
ppc_section_letter(letter,ptr_msg)2805 ppc_section_letter (letter, ptr_msg)
2806 int letter;
2807 char **ptr_msg;
2808 {
2809 if (letter == 'e')
2810 return SHF_EXCLUDE;
2811
2812 *ptr_msg = _("Bad .section directive: want a,e,w,x,M,S,G,T in string");
2813 return -1;
2814 }
2815
2816 int
ppc_section_word(str,len)2817 ppc_section_word (str, len)
2818 char *str;
2819 size_t len;
2820 {
2821 if (len == 7 && strncmp (str, "exclude", 7) == 0)
2822 return SHF_EXCLUDE;
2823
2824 return -1;
2825 }
2826
2827 int
ppc_section_type(str,len)2828 ppc_section_type (str, len)
2829 char *str;
2830 size_t len;
2831 {
2832 if (len == 7 && strncmp (str, "ordered", 7) == 0)
2833 return SHT_ORDERED;
2834
2835 return -1;
2836 }
2837
2838 int
ppc_section_flags(flags,attr,type)2839 ppc_section_flags (flags, attr, type)
2840 int flags;
2841 int attr;
2842 int type;
2843 {
2844 if (type == SHT_ORDERED)
2845 flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
2846
2847 if (attr & SHF_EXCLUDE)
2848 flags |= SEC_EXCLUDE;
2849
2850 return flags;
2851 }
2852 #endif /* OBJ_ELF */
2853
2854
2855 /* Pseudo-op handling. */
2856
2857 /* The .byte pseudo-op. This is similar to the normal .byte
2858 pseudo-op, but it can also take a single ASCII string. */
2859
2860 static void
ppc_byte(ignore)2861 ppc_byte (ignore)
2862 int ignore ATTRIBUTE_UNUSED;
2863 {
2864 if (*input_line_pointer != '\"')
2865 {
2866 cons (1);
2867 return;
2868 }
2869
2870 /* Gather characters. A real double quote is doubled. Unusual
2871 characters are not permitted. */
2872 ++input_line_pointer;
2873 while (1)
2874 {
2875 char c;
2876
2877 c = *input_line_pointer++;
2878
2879 if (c == '\"')
2880 {
2881 if (*input_line_pointer != '\"')
2882 break;
2883 ++input_line_pointer;
2884 }
2885
2886 FRAG_APPEND_1_CHAR (c);
2887 }
2888
2889 demand_empty_rest_of_line ();
2890 }
2891
2892 #ifdef OBJ_XCOFF
2893
2894 /* XCOFF specific pseudo-op handling. */
2895
2896 /* This is set if we are creating a .stabx symbol, since we don't want
2897 to handle symbol suffixes for such symbols. */
2898 static bfd_boolean ppc_stab_symbol;
2899
2900 /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
2901 symbols in the .bss segment as though they were local common
2902 symbols, and uses a different smclas. The native Aix 4.3.3 assembler
2903 aligns .comm and .lcomm to 4 bytes. */
2904
2905 static void
ppc_comm(lcomm)2906 ppc_comm (lcomm)
2907 int lcomm;
2908 {
2909 asection *current_seg = now_seg;
2910 subsegT current_subseg = now_subseg;
2911 char *name;
2912 char endc;
2913 char *end_name;
2914 offsetT size;
2915 offsetT align;
2916 symbolS *lcomm_sym = NULL;
2917 symbolS *sym;
2918 char *pfrag;
2919
2920 name = input_line_pointer;
2921 endc = get_symbol_end ();
2922 end_name = input_line_pointer;
2923 *end_name = endc;
2924
2925 if (*input_line_pointer != ',')
2926 {
2927 as_bad (_("missing size"));
2928 ignore_rest_of_line ();
2929 return;
2930 }
2931 ++input_line_pointer;
2932
2933 size = get_absolute_expression ();
2934 if (size < 0)
2935 {
2936 as_bad (_("negative size"));
2937 ignore_rest_of_line ();
2938 return;
2939 }
2940
2941 if (! lcomm)
2942 {
2943 /* The third argument to .comm is the alignment. */
2944 if (*input_line_pointer != ',')
2945 align = 2;
2946 else
2947 {
2948 ++input_line_pointer;
2949 align = get_absolute_expression ();
2950 if (align <= 0)
2951 {
2952 as_warn (_("ignoring bad alignment"));
2953 align = 2;
2954 }
2955 }
2956 }
2957 else
2958 {
2959 char *lcomm_name;
2960 char lcomm_endc;
2961
2962 if (size <= 4)
2963 align = 2;
2964 else
2965 align = 3;
2966
2967 /* The third argument to .lcomm appears to be the real local
2968 common symbol to create. References to the symbol named in
2969 the first argument are turned into references to the third
2970 argument. */
2971 if (*input_line_pointer != ',')
2972 {
2973 as_bad (_("missing real symbol name"));
2974 ignore_rest_of_line ();
2975 return;
2976 }
2977 ++input_line_pointer;
2978
2979 lcomm_name = input_line_pointer;
2980 lcomm_endc = get_symbol_end ();
2981
2982 lcomm_sym = symbol_find_or_make (lcomm_name);
2983
2984 *input_line_pointer = lcomm_endc;
2985 }
2986
2987 *end_name = '\0';
2988 sym = symbol_find_or_make (name);
2989 *end_name = endc;
2990
2991 if (S_IS_DEFINED (sym)
2992 || S_GET_VALUE (sym) != 0)
2993 {
2994 as_bad (_("attempt to redefine symbol"));
2995 ignore_rest_of_line ();
2996 return;
2997 }
2998
2999 record_alignment (bss_section, align);
3000
3001 if (! lcomm
3002 || ! S_IS_DEFINED (lcomm_sym))
3003 {
3004 symbolS *def_sym;
3005 offsetT def_size;
3006
3007 if (! lcomm)
3008 {
3009 def_sym = sym;
3010 def_size = size;
3011 S_SET_EXTERNAL (sym);
3012 }
3013 else
3014 {
3015 symbol_get_tc (lcomm_sym)->output = 1;
3016 def_sym = lcomm_sym;
3017 def_size = 0;
3018 }
3019
3020 subseg_set (bss_section, 1);
3021 frag_align (align, 0, 0);
3022
3023 symbol_set_frag (def_sym, frag_now);
3024 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
3025 def_size, (char *) NULL);
3026 *pfrag = 0;
3027 S_SET_SEGMENT (def_sym, bss_section);
3028 symbol_get_tc (def_sym)->align = align;
3029 }
3030 else if (lcomm)
3031 {
3032 /* Align the size of lcomm_sym. */
3033 symbol_get_frag (lcomm_sym)->fr_offset =
3034 ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
3035 &~ ((1 << align) - 1));
3036 if (align > symbol_get_tc (lcomm_sym)->align)
3037 symbol_get_tc (lcomm_sym)->align = align;
3038 }
3039
3040 if (lcomm)
3041 {
3042 /* Make sym an offset from lcomm_sym. */
3043 S_SET_SEGMENT (sym, bss_section);
3044 symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
3045 S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
3046 symbol_get_frag (lcomm_sym)->fr_offset += size;
3047 }
3048
3049 subseg_set (current_seg, current_subseg);
3050
3051 demand_empty_rest_of_line ();
3052 }
3053
3054 /* The .csect pseudo-op. This switches us into a different
3055 subsegment. The first argument is a symbol whose value is the
3056 start of the .csect. In COFF, csect symbols get special aux
3057 entries defined by the x_csect field of union internal_auxent. The
3058 optional second argument is the alignment (the default is 2). */
3059
3060 static void
ppc_csect(ignore)3061 ppc_csect (ignore)
3062 int ignore ATTRIBUTE_UNUSED;
3063 {
3064 char *name;
3065 char endc;
3066 symbolS *sym;
3067 offsetT align;
3068
3069 name = input_line_pointer;
3070 endc = get_symbol_end ();
3071
3072 sym = symbol_find_or_make (name);
3073
3074 *input_line_pointer = endc;
3075
3076 if (S_GET_NAME (sym)[0] == '\0')
3077 {
3078 /* An unnamed csect is assumed to be [PR]. */
3079 symbol_get_tc (sym)->class = XMC_PR;
3080 }
3081
3082 align = 2;
3083 if (*input_line_pointer == ',')
3084 {
3085 ++input_line_pointer;
3086 align = get_absolute_expression ();
3087 }
3088
3089 ppc_change_csect (sym, align);
3090
3091 demand_empty_rest_of_line ();
3092 }
3093
3094 /* Change to a different csect. */
3095
3096 static void
ppc_change_csect(sym,align)3097 ppc_change_csect (sym, align)
3098 symbolS *sym;
3099 offsetT align;
3100 {
3101 if (S_IS_DEFINED (sym))
3102 subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
3103 else
3104 {
3105 symbolS **list_ptr;
3106 int after_toc;
3107 int hold_chunksize;
3108 symbolS *list;
3109 int is_code;
3110 segT sec;
3111
3112 /* This is a new csect. We need to look at the symbol class to
3113 figure out whether it should go in the text section or the
3114 data section. */
3115 after_toc = 0;
3116 is_code = 0;
3117 switch (symbol_get_tc (sym)->class)
3118 {
3119 case XMC_PR:
3120 case XMC_RO:
3121 case XMC_DB:
3122 case XMC_GL:
3123 case XMC_XO:
3124 case XMC_SV:
3125 case XMC_TI:
3126 case XMC_TB:
3127 S_SET_SEGMENT (sym, text_section);
3128 symbol_get_tc (sym)->subseg = ppc_text_subsegment;
3129 ++ppc_text_subsegment;
3130 list_ptr = &ppc_text_csects;
3131 is_code = 1;
3132 break;
3133 case XMC_RW:
3134 case XMC_TC0:
3135 case XMC_TC:
3136 case XMC_DS:
3137 case XMC_UA:
3138 case XMC_BS:
3139 case XMC_UC:
3140 if (ppc_toc_csect != NULL
3141 && (symbol_get_tc (ppc_toc_csect)->subseg + 1
3142 == ppc_data_subsegment))
3143 after_toc = 1;
3144 S_SET_SEGMENT (sym, data_section);
3145 symbol_get_tc (sym)->subseg = ppc_data_subsegment;
3146 ++ppc_data_subsegment;
3147 list_ptr = &ppc_data_csects;
3148 break;
3149 default:
3150 abort ();
3151 }
3152
3153 /* We set the obstack chunk size to a small value before
3154 changing subsegments, so that we don't use a lot of memory
3155 space for what may be a small section. */
3156 hold_chunksize = chunksize;
3157 chunksize = 64;
3158
3159 sec = subseg_new (segment_name (S_GET_SEGMENT (sym)),
3160 symbol_get_tc (sym)->subseg);
3161
3162 chunksize = hold_chunksize;
3163
3164 if (after_toc)
3165 ppc_after_toc_frag = frag_now;
3166
3167 record_alignment (sec, align);
3168 if (is_code)
3169 frag_align_code (align, 0);
3170 else
3171 frag_align (align, 0, 0);
3172
3173 symbol_set_frag (sym, frag_now);
3174 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3175
3176 symbol_get_tc (sym)->align = align;
3177 symbol_get_tc (sym)->output = 1;
3178 symbol_get_tc (sym)->within = sym;
3179
3180 for (list = *list_ptr;
3181 symbol_get_tc (list)->next != (symbolS *) NULL;
3182 list = symbol_get_tc (list)->next)
3183 ;
3184 symbol_get_tc (list)->next = sym;
3185
3186 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3187 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3188 &symbol_lastP);
3189 }
3190
3191 ppc_current_csect = sym;
3192 }
3193
3194 /* This function handles the .text and .data pseudo-ops. These
3195 pseudo-ops aren't really used by XCOFF; we implement them for the
3196 convenience of people who aren't used to XCOFF. */
3197
3198 static void
ppc_section(type)3199 ppc_section (type)
3200 int type;
3201 {
3202 const char *name;
3203 symbolS *sym;
3204
3205 if (type == 't')
3206 name = ".text[PR]";
3207 else if (type == 'd')
3208 name = ".data[RW]";
3209 else
3210 abort ();
3211
3212 sym = symbol_find_or_make (name);
3213
3214 ppc_change_csect (sym, 2);
3215
3216 demand_empty_rest_of_line ();
3217 }
3218
3219 /* This function handles the .section pseudo-op. This is mostly to
3220 give an error, since XCOFF only supports .text, .data and .bss, but
3221 we do permit the user to name the text or data section. */
3222
3223 static void
ppc_named_section(ignore)3224 ppc_named_section (ignore)
3225 int ignore ATTRIBUTE_UNUSED;
3226 {
3227 char *user_name;
3228 const char *real_name;
3229 char c;
3230 symbolS *sym;
3231
3232 user_name = input_line_pointer;
3233 c = get_symbol_end ();
3234
3235 if (strcmp (user_name, ".text") == 0)
3236 real_name = ".text[PR]";
3237 else if (strcmp (user_name, ".data") == 0)
3238 real_name = ".data[RW]";
3239 else
3240 {
3241 as_bad (_("The XCOFF file format does not support arbitrary sections"));
3242 *input_line_pointer = c;
3243 ignore_rest_of_line ();
3244 return;
3245 }
3246
3247 *input_line_pointer = c;
3248
3249 sym = symbol_find_or_make (real_name);
3250
3251 ppc_change_csect (sym, 2);
3252
3253 demand_empty_rest_of_line ();
3254 }
3255
3256 /* The .extern pseudo-op. We create an undefined symbol. */
3257
3258 static void
ppc_extern(ignore)3259 ppc_extern (ignore)
3260 int ignore ATTRIBUTE_UNUSED;
3261 {
3262 char *name;
3263 char endc;
3264
3265 name = input_line_pointer;
3266 endc = get_symbol_end ();
3267
3268 (void) symbol_find_or_make (name);
3269
3270 *input_line_pointer = endc;
3271
3272 demand_empty_rest_of_line ();
3273 }
3274
3275 /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
3276
3277 static void
ppc_lglobl(ignore)3278 ppc_lglobl (ignore)
3279 int ignore ATTRIBUTE_UNUSED;
3280 {
3281 char *name;
3282 char endc;
3283 symbolS *sym;
3284
3285 name = input_line_pointer;
3286 endc = get_symbol_end ();
3287
3288 sym = symbol_find_or_make (name);
3289
3290 *input_line_pointer = endc;
3291
3292 symbol_get_tc (sym)->output = 1;
3293
3294 demand_empty_rest_of_line ();
3295 }
3296
3297 /* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
3298 although I don't know why it bothers. */
3299
3300 static void
ppc_rename(ignore)3301 ppc_rename (ignore)
3302 int ignore ATTRIBUTE_UNUSED;
3303 {
3304 char *name;
3305 char endc;
3306 symbolS *sym;
3307 int len;
3308
3309 name = input_line_pointer;
3310 endc = get_symbol_end ();
3311
3312 sym = symbol_find_or_make (name);
3313
3314 *input_line_pointer = endc;
3315
3316 if (*input_line_pointer != ',')
3317 {
3318 as_bad (_("missing rename string"));
3319 ignore_rest_of_line ();
3320 return;
3321 }
3322 ++input_line_pointer;
3323
3324 symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
3325
3326 demand_empty_rest_of_line ();
3327 }
3328
3329 /* The .stabx pseudo-op. This is similar to a normal .stabs
3330 pseudo-op, but slightly different. A sample is
3331 .stabx "main:F-1",.main,142,0
3332 The first argument is the symbol name to create. The second is the
3333 value, and the third is the storage class. The fourth seems to be
3334 always zero, and I am assuming it is the type. */
3335
3336 static void
ppc_stabx(ignore)3337 ppc_stabx (ignore)
3338 int ignore ATTRIBUTE_UNUSED;
3339 {
3340 char *name;
3341 int len;
3342 symbolS *sym;
3343 expressionS exp;
3344
3345 name = demand_copy_C_string (&len);
3346
3347 if (*input_line_pointer != ',')
3348 {
3349 as_bad (_("missing value"));
3350 return;
3351 }
3352 ++input_line_pointer;
3353
3354 ppc_stab_symbol = TRUE;
3355 sym = symbol_make (name);
3356 ppc_stab_symbol = FALSE;
3357
3358 symbol_get_tc (sym)->real_name = name;
3359
3360 (void) expression (&exp);
3361
3362 switch (exp.X_op)
3363 {
3364 case O_illegal:
3365 case O_absent:
3366 case O_big:
3367 as_bad (_("illegal .stabx expression; zero assumed"));
3368 exp.X_add_number = 0;
3369 /* Fall through. */
3370 case O_constant:
3371 S_SET_VALUE (sym, (valueT) exp.X_add_number);
3372 symbol_set_frag (sym, &zero_address_frag);
3373 break;
3374
3375 case O_symbol:
3376 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
3377 symbol_set_value_expression (sym, &exp);
3378 else
3379 {
3380 S_SET_VALUE (sym,
3381 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
3382 symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
3383 }
3384 break;
3385
3386 default:
3387 /* The value is some complex expression. This will probably
3388 fail at some later point, but this is probably the right
3389 thing to do here. */
3390 symbol_set_value_expression (sym, &exp);
3391 break;
3392 }
3393
3394 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3395 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3396
3397 if (*input_line_pointer != ',')
3398 {
3399 as_bad (_("missing class"));
3400 return;
3401 }
3402 ++input_line_pointer;
3403
3404 S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
3405
3406 if (*input_line_pointer != ',')
3407 {
3408 as_bad (_("missing type"));
3409 return;
3410 }
3411 ++input_line_pointer;
3412
3413 S_SET_DATA_TYPE (sym, get_absolute_expression ());
3414
3415 symbol_get_tc (sym)->output = 1;
3416
3417 if (S_GET_STORAGE_CLASS (sym) == C_STSYM) {
3418
3419 symbol_get_tc (sym)->within = ppc_current_block;
3420
3421 /* In this case :
3422
3423 .bs name
3424 .stabx "z",arrays_,133,0
3425 .es
3426
3427 .comm arrays_,13768,3
3428
3429 resolve_symbol_value will copy the exp's "within" into sym's when the
3430 offset is 0. Since this seems to be corner case problem,
3431 only do the correction for storage class C_STSYM. A better solution
3432 would be to have the tc field updated in ppc_symbol_new_hook. */
3433
3434 if (exp.X_op == O_symbol)
3435 {
3436 symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block;
3437 }
3438 }
3439
3440 if (exp.X_op != O_symbol
3441 || ! S_IS_EXTERNAL (exp.X_add_symbol)
3442 || S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
3443 ppc_frob_label (sym);
3444 else
3445 {
3446 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3447 symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
3448 if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
3449 symbol_get_tc (ppc_current_csect)->within = sym;
3450 }
3451
3452 demand_empty_rest_of_line ();
3453 }
3454
3455 /* The .function pseudo-op. This takes several arguments. The first
3456 argument seems to be the external name of the symbol. The second
3457 argument seems to be the label for the start of the function. gcc
3458 uses the same name for both. I have no idea what the third and
3459 fourth arguments are meant to be. The optional fifth argument is
3460 an expression for the size of the function. In COFF this symbol
3461 gets an aux entry like that used for a csect. */
3462
3463 static void
ppc_function(ignore)3464 ppc_function (ignore)
3465 int ignore ATTRIBUTE_UNUSED;
3466 {
3467 char *name;
3468 char endc;
3469 char *s;
3470 symbolS *ext_sym;
3471 symbolS *lab_sym;
3472
3473 name = input_line_pointer;
3474 endc = get_symbol_end ();
3475
3476 /* Ignore any [PR] suffix. */
3477 name = ppc_canonicalize_symbol_name (name);
3478 s = strchr (name, '[');
3479 if (s != (char *) NULL
3480 && strcmp (s + 1, "PR]") == 0)
3481 *s = '\0';
3482
3483 ext_sym = symbol_find_or_make (name);
3484
3485 *input_line_pointer = endc;
3486
3487 if (*input_line_pointer != ',')
3488 {
3489 as_bad (_("missing symbol name"));
3490 ignore_rest_of_line ();
3491 return;
3492 }
3493 ++input_line_pointer;
3494
3495 name = input_line_pointer;
3496 endc = get_symbol_end ();
3497
3498 lab_sym = symbol_find_or_make (name);
3499
3500 *input_line_pointer = endc;
3501
3502 if (ext_sym != lab_sym)
3503 {
3504 expressionS exp;
3505
3506 exp.X_op = O_symbol;
3507 exp.X_add_symbol = lab_sym;
3508 exp.X_op_symbol = NULL;
3509 exp.X_add_number = 0;
3510 exp.X_unsigned = 0;
3511 symbol_set_value_expression (ext_sym, &exp);
3512 }
3513
3514 if (symbol_get_tc (ext_sym)->class == -1)
3515 symbol_get_tc (ext_sym)->class = XMC_PR;
3516 symbol_get_tc (ext_sym)->output = 1;
3517
3518 if (*input_line_pointer == ',')
3519 {
3520 expressionS ignore;
3521
3522 /* Ignore the third argument. */
3523 ++input_line_pointer;
3524 expression (&ignore);
3525 if (*input_line_pointer == ',')
3526 {
3527 /* Ignore the fourth argument. */
3528 ++input_line_pointer;
3529 expression (&ignore);
3530 if (*input_line_pointer == ',')
3531 {
3532 /* The fifth argument is the function size. */
3533 ++input_line_pointer;
3534 symbol_get_tc (ext_sym)->size = symbol_new ("L0\001",
3535 absolute_section,
3536 (valueT) 0,
3537 &zero_address_frag);
3538 pseudo_set (symbol_get_tc (ext_sym)->size);
3539 }
3540 }
3541 }
3542
3543 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
3544 SF_SET_FUNCTION (ext_sym);
3545 SF_SET_PROCESS (ext_sym);
3546 coff_add_linesym (ext_sym);
3547
3548 demand_empty_rest_of_line ();
3549 }
3550
3551 /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
3552 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
3553 with the correct line number */
3554
3555 static symbolS *saved_bi_sym = 0;
3556
3557 static void
ppc_bf(ignore)3558 ppc_bf (ignore)
3559 int ignore ATTRIBUTE_UNUSED;
3560 {
3561 symbolS *sym;
3562
3563 sym = symbol_make (".bf");
3564 S_SET_SEGMENT (sym, text_section);
3565 symbol_set_frag (sym, frag_now);
3566 S_SET_VALUE (sym, frag_now_fix ());
3567 S_SET_STORAGE_CLASS (sym, C_FCN);
3568
3569 coff_line_base = get_absolute_expression ();
3570
3571 S_SET_NUMBER_AUXILIARY (sym, 1);
3572 SA_SET_SYM_LNNO (sym, coff_line_base);
3573
3574 /* Line number for bi. */
3575 if (saved_bi_sym)
3576 {
3577 S_SET_VALUE (saved_bi_sym, coff_n_line_nos);
3578 saved_bi_sym = 0;
3579 }
3580
3581
3582 symbol_get_tc (sym)->output = 1;
3583
3584 ppc_frob_label (sym);
3585
3586 demand_empty_rest_of_line ();
3587 }
3588
3589 /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
3590 ".ef", except that the line number is absolute, not relative to the
3591 most recent ".bf" symbol. */
3592
3593 static void
ppc_ef(ignore)3594 ppc_ef (ignore)
3595 int ignore ATTRIBUTE_UNUSED;
3596 {
3597 symbolS *sym;
3598
3599 sym = symbol_make (".ef");
3600 S_SET_SEGMENT (sym, text_section);
3601 symbol_set_frag (sym, frag_now);
3602 S_SET_VALUE (sym, frag_now_fix ());
3603 S_SET_STORAGE_CLASS (sym, C_FCN);
3604 S_SET_NUMBER_AUXILIARY (sym, 1);
3605 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3606 symbol_get_tc (sym)->output = 1;
3607
3608 ppc_frob_label (sym);
3609
3610 demand_empty_rest_of_line ();
3611 }
3612
3613 /* The .bi and .ei pseudo-ops. These take a string argument and
3614 generates a C_BINCL or C_EINCL symbol, which goes at the start of
3615 the symbol list. The value of .bi will be know when the next .bf
3616 is encountered. */
3617
3618 static void
ppc_biei(ei)3619 ppc_biei (ei)
3620 int ei;
3621 {
3622 static symbolS *last_biei;
3623
3624 char *name;
3625 int len;
3626 symbolS *sym;
3627 symbolS *look;
3628
3629 name = demand_copy_C_string (&len);
3630
3631 /* The value of these symbols is actually file offset. Here we set
3632 the value to the index into the line number entries. In
3633 ppc_frob_symbols we set the fix_line field, which will cause BFD
3634 to do the right thing. */
3635
3636 sym = symbol_make (name);
3637 /* obj-coff.c currently only handles line numbers correctly in the
3638 .text section. */
3639 S_SET_SEGMENT (sym, text_section);
3640 S_SET_VALUE (sym, coff_n_line_nos);
3641 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3642
3643 S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
3644 symbol_get_tc (sym)->output = 1;
3645
3646 /* Save bi. */
3647 if (ei)
3648 saved_bi_sym = 0;
3649 else
3650 saved_bi_sym = sym;
3651
3652 for (look = last_biei ? last_biei : symbol_rootP;
3653 (look != (symbolS *) NULL
3654 && (S_GET_STORAGE_CLASS (look) == C_FILE
3655 || S_GET_STORAGE_CLASS (look) == C_BINCL
3656 || S_GET_STORAGE_CLASS (look) == C_EINCL));
3657 look = symbol_next (look))
3658 ;
3659 if (look != (symbolS *) NULL)
3660 {
3661 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3662 symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
3663 last_biei = sym;
3664 }
3665
3666 demand_empty_rest_of_line ();
3667 }
3668
3669 /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
3670 There is one argument, which is a csect symbol. The value of the
3671 .bs symbol is the index of this csect symbol. */
3672
3673 static void
ppc_bs(ignore)3674 ppc_bs (ignore)
3675 int ignore ATTRIBUTE_UNUSED;
3676 {
3677 char *name;
3678 char endc;
3679 symbolS *csect;
3680 symbolS *sym;
3681
3682 if (ppc_current_block != NULL)
3683 as_bad (_("nested .bs blocks"));
3684
3685 name = input_line_pointer;
3686 endc = get_symbol_end ();
3687
3688 csect = symbol_find_or_make (name);
3689
3690 *input_line_pointer = endc;
3691
3692 sym = symbol_make (".bs");
3693 S_SET_SEGMENT (sym, now_seg);
3694 S_SET_STORAGE_CLASS (sym, C_BSTAT);
3695 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3696 symbol_get_tc (sym)->output = 1;
3697
3698 symbol_get_tc (sym)->within = csect;
3699
3700 ppc_frob_label (sym);
3701
3702 ppc_current_block = sym;
3703
3704 demand_empty_rest_of_line ();
3705 }
3706
3707 /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
3708
3709 static void
ppc_es(ignore)3710 ppc_es (ignore)
3711 int ignore ATTRIBUTE_UNUSED;
3712 {
3713 symbolS *sym;
3714
3715 if (ppc_current_block == NULL)
3716 as_bad (_(".es without preceding .bs"));
3717
3718 sym = symbol_make (".es");
3719 S_SET_SEGMENT (sym, now_seg);
3720 S_SET_STORAGE_CLASS (sym, C_ESTAT);
3721 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3722 symbol_get_tc (sym)->output = 1;
3723
3724 ppc_frob_label (sym);
3725
3726 ppc_current_block = NULL;
3727
3728 demand_empty_rest_of_line ();
3729 }
3730
3731 /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
3732 line number. */
3733
3734 static void
ppc_bb(ignore)3735 ppc_bb (ignore)
3736 int ignore ATTRIBUTE_UNUSED;
3737 {
3738 symbolS *sym;
3739
3740 sym = symbol_make (".bb");
3741 S_SET_SEGMENT (sym, text_section);
3742 symbol_set_frag (sym, frag_now);
3743 S_SET_VALUE (sym, frag_now_fix ());
3744 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3745
3746 S_SET_NUMBER_AUXILIARY (sym, 1);
3747 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3748
3749 symbol_get_tc (sym)->output = 1;
3750
3751 SF_SET_PROCESS (sym);
3752
3753 ppc_frob_label (sym);
3754
3755 demand_empty_rest_of_line ();
3756 }
3757
3758 /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
3759 line number. */
3760
3761 static void
ppc_eb(ignore)3762 ppc_eb (ignore)
3763 int ignore ATTRIBUTE_UNUSED;
3764 {
3765 symbolS *sym;
3766
3767 sym = symbol_make (".eb");
3768 S_SET_SEGMENT (sym, text_section);
3769 symbol_set_frag (sym, frag_now);
3770 S_SET_VALUE (sym, frag_now_fix ());
3771 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3772 S_SET_NUMBER_AUXILIARY (sym, 1);
3773 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3774 symbol_get_tc (sym)->output = 1;
3775
3776 SF_SET_PROCESS (sym);
3777
3778 ppc_frob_label (sym);
3779
3780 demand_empty_rest_of_line ();
3781 }
3782
3783 /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
3784 specified name. */
3785
3786 static void
ppc_bc(ignore)3787 ppc_bc (ignore)
3788 int ignore ATTRIBUTE_UNUSED;
3789 {
3790 char *name;
3791 int len;
3792 symbolS *sym;
3793
3794 name = demand_copy_C_string (&len);
3795 sym = symbol_make (name);
3796 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3797 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3798 S_SET_STORAGE_CLASS (sym, C_BCOMM);
3799 S_SET_VALUE (sym, 0);
3800 symbol_get_tc (sym)->output = 1;
3801
3802 ppc_frob_label (sym);
3803
3804 demand_empty_rest_of_line ();
3805 }
3806
3807 /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
3808
3809 static void
ppc_ec(ignore)3810 ppc_ec (ignore)
3811 int ignore ATTRIBUTE_UNUSED;
3812 {
3813 symbolS *sym;
3814
3815 sym = symbol_make (".ec");
3816 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3817 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3818 S_SET_STORAGE_CLASS (sym, C_ECOMM);
3819 S_SET_VALUE (sym, 0);
3820 symbol_get_tc (sym)->output = 1;
3821
3822 ppc_frob_label (sym);
3823
3824 demand_empty_rest_of_line ();
3825 }
3826
3827 /* The .toc pseudo-op. Switch to the .toc subsegment. */
3828
3829 static void
ppc_toc(ignore)3830 ppc_toc (ignore)
3831 int ignore ATTRIBUTE_UNUSED;
3832 {
3833 if (ppc_toc_csect != (symbolS *) NULL)
3834 subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
3835 else
3836 {
3837 subsegT subseg;
3838 symbolS *sym;
3839 symbolS *list;
3840
3841 subseg = ppc_data_subsegment;
3842 ++ppc_data_subsegment;
3843
3844 subseg_new (segment_name (data_section), subseg);
3845 ppc_toc_frag = frag_now;
3846
3847 sym = symbol_find_or_make ("TOC[TC0]");
3848 symbol_set_frag (sym, frag_now);
3849 S_SET_SEGMENT (sym, data_section);
3850 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3851 symbol_get_tc (sym)->subseg = subseg;
3852 symbol_get_tc (sym)->output = 1;
3853 symbol_get_tc (sym)->within = sym;
3854
3855 ppc_toc_csect = sym;
3856
3857 for (list = ppc_data_csects;
3858 symbol_get_tc (list)->next != (symbolS *) NULL;
3859 list = symbol_get_tc (list)->next)
3860 ;
3861 symbol_get_tc (list)->next = sym;
3862
3863 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3864 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3865 &symbol_lastP);
3866 }
3867
3868 ppc_current_csect = ppc_toc_csect;
3869
3870 demand_empty_rest_of_line ();
3871 }
3872
3873 /* The AIX assembler automatically aligns the operands of a .long or
3874 .short pseudo-op, and we want to be compatible. */
3875
3876 static void
ppc_xcoff_cons(log_size)3877 ppc_xcoff_cons (log_size)
3878 int log_size;
3879 {
3880 frag_align (log_size, 0, 0);
3881 record_alignment (now_seg, log_size);
3882 cons (1 << log_size);
3883 }
3884
3885 static void
ppc_vbyte(dummy)3886 ppc_vbyte (dummy)
3887 int dummy ATTRIBUTE_UNUSED;
3888 {
3889 expressionS exp;
3890 int byte_count;
3891
3892 (void) expression (&exp);
3893
3894 if (exp.X_op != O_constant)
3895 {
3896 as_bad (_("non-constant byte count"));
3897 return;
3898 }
3899
3900 byte_count = exp.X_add_number;
3901
3902 if (*input_line_pointer != ',')
3903 {
3904 as_bad (_("missing value"));
3905 return;
3906 }
3907
3908 ++input_line_pointer;
3909 cons (byte_count);
3910 }
3911
3912 #endif /* OBJ_XCOFF */
3913 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
3914
3915 /* The .tc pseudo-op. This is used when generating either XCOFF or
3916 ELF. This takes two or more arguments.
3917
3918 When generating XCOFF output, the first argument is the name to
3919 give to this location in the toc; this will be a symbol with class
3920 TC. The rest of the arguments are N-byte values to actually put at
3921 this location in the TOC; often there is just one more argument, a
3922 relocatable symbol reference. The size of the value to store
3923 depends on target word size. A 32-bit target uses 4-byte values, a
3924 64-bit target uses 8-byte values.
3925
3926 When not generating XCOFF output, the arguments are the same, but
3927 the first argument is simply ignored. */
3928
3929 static void
ppc_tc(ignore)3930 ppc_tc (ignore)
3931 int ignore ATTRIBUTE_UNUSED;
3932 {
3933 #ifdef OBJ_XCOFF
3934
3935 /* Define the TOC symbol name. */
3936 {
3937 char *name;
3938 char endc;
3939 symbolS *sym;
3940
3941 if (ppc_toc_csect == (symbolS *) NULL
3942 || ppc_toc_csect != ppc_current_csect)
3943 {
3944 as_bad (_(".tc not in .toc section"));
3945 ignore_rest_of_line ();
3946 return;
3947 }
3948
3949 name = input_line_pointer;
3950 endc = get_symbol_end ();
3951
3952 sym = symbol_find_or_make (name);
3953
3954 *input_line_pointer = endc;
3955
3956 if (S_IS_DEFINED (sym))
3957 {
3958 symbolS *label;
3959
3960 label = symbol_get_tc (ppc_current_csect)->within;
3961 if (symbol_get_tc (label)->class != XMC_TC0)
3962 {
3963 as_bad (_(".tc with no label"));
3964 ignore_rest_of_line ();
3965 return;
3966 }
3967
3968 S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
3969 symbol_set_frag (label, symbol_get_frag (sym));
3970 S_SET_VALUE (label, S_GET_VALUE (sym));
3971
3972 while (! is_end_of_line[(unsigned char) *input_line_pointer])
3973 ++input_line_pointer;
3974
3975 return;
3976 }
3977
3978 S_SET_SEGMENT (sym, now_seg);
3979 symbol_set_frag (sym, frag_now);
3980 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3981 symbol_get_tc (sym)->class = XMC_TC;
3982 symbol_get_tc (sym)->output = 1;
3983
3984 ppc_frob_label (sym);
3985 }
3986
3987 #endif /* OBJ_XCOFF */
3988 #ifdef OBJ_ELF
3989 int align;
3990
3991 /* Skip the TOC symbol name. */
3992 while (is_part_of_name (*input_line_pointer)
3993 || *input_line_pointer == '['
3994 || *input_line_pointer == ']'
3995 || *input_line_pointer == '{'
3996 || *input_line_pointer == '}')
3997 ++input_line_pointer;
3998
3999 /* Align to a four/eight byte boundary. */
4000 align = ppc_obj64 ? 3 : 2;
4001 frag_align (align, 0, 0);
4002 record_alignment (now_seg, align);
4003 #endif /* OBJ_ELF */
4004
4005 if (*input_line_pointer != ',')
4006 demand_empty_rest_of_line ();
4007 else
4008 {
4009 ++input_line_pointer;
4010 cons (ppc_obj64 ? 8 : 4);
4011 }
4012 }
4013
4014 /* Pseudo-op .machine. */
4015
4016 static void
ppc_machine(ignore)4017 ppc_machine (ignore)
4018 int ignore ATTRIBUTE_UNUSED;
4019 {
4020 char *cpu_string;
4021 #define MAX_HISTORY 100
4022 static unsigned long *cpu_history;
4023 static int curr_hist;
4024
4025 SKIP_WHITESPACE ();
4026
4027 if (*input_line_pointer == '"')
4028 {
4029 int len;
4030 cpu_string = demand_copy_C_string (&len);
4031 }
4032 else
4033 {
4034 char c;
4035 cpu_string = input_line_pointer;
4036 c = get_symbol_end ();
4037 cpu_string = xstrdup (cpu_string);
4038 *input_line_pointer = c;
4039 }
4040
4041 if (cpu_string != NULL)
4042 {
4043 unsigned long old_cpu = ppc_cpu;
4044 char *p;
4045
4046 for (p = cpu_string; *p != 0; p++)
4047 *p = TOLOWER (*p);
4048
4049 if (strcmp (cpu_string, "push") == 0)
4050 {
4051 if (cpu_history == NULL)
4052 cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history));
4053
4054 if (curr_hist >= MAX_HISTORY)
4055 as_bad (_(".machine stack overflow"));
4056 else
4057 cpu_history[curr_hist++] = ppc_cpu;
4058 }
4059 else if (strcmp (cpu_string, "pop") == 0)
4060 {
4061 if (curr_hist <= 0)
4062 as_bad (_(".machine stack underflow"));
4063 else
4064 ppc_cpu = cpu_history[--curr_hist];
4065 }
4066 else if (parse_cpu (cpu_string))
4067 ;
4068 else
4069 as_bad (_("invalid machine `%s'"), cpu_string);
4070
4071 if (ppc_cpu != old_cpu)
4072 ppc_setup_opcodes ();
4073 }
4074
4075 demand_empty_rest_of_line ();
4076 }
4077
4078 /* See whether a symbol is in the TOC section. */
4079
4080 static int
ppc_is_toc_sym(sym)4081 ppc_is_toc_sym (sym)
4082 symbolS *sym;
4083 {
4084 #ifdef OBJ_XCOFF
4085 return symbol_get_tc (sym)->class == XMC_TC;
4086 #endif
4087 #ifdef OBJ_ELF
4088 const char *sname = segment_name (S_GET_SEGMENT (sym));
4089 if (ppc_obj64)
4090 return strcmp (sname, ".toc") == 0;
4091 else
4092 return strcmp (sname, ".got") == 0;
4093 #endif
4094 }
4095 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
4096
4097 #ifdef TE_PE
4098
4099 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
4100
4101 /* Set the current section. */
4102 static void
ppc_set_current_section(new)4103 ppc_set_current_section (new)
4104 segT new;
4105 {
4106 ppc_previous_section = ppc_current_section;
4107 ppc_current_section = new;
4108 }
4109
4110 /* pseudo-op: .previous
4111 behaviour: toggles the current section with the previous section.
4112 errors: None
4113 warnings: "No previous section" */
4114
4115 static void
ppc_previous(ignore)4116 ppc_previous (ignore)
4117 int ignore ATTRIBUTE_UNUSED;
4118 {
4119 symbolS *tmp;
4120
4121 if (ppc_previous_section == NULL)
4122 {
4123 as_warn (_("No previous section to return to. Directive ignored."));
4124 return;
4125 }
4126
4127 subseg_set (ppc_previous_section, 0);
4128
4129 ppc_set_current_section (ppc_previous_section);
4130 }
4131
4132 /* pseudo-op: .pdata
4133 behaviour: predefined read only data section
4134 double word aligned
4135 errors: None
4136 warnings: None
4137 initial: .section .pdata "adr3"
4138 a - don't know -- maybe a misprint
4139 d - initialized data
4140 r - readable
4141 3 - double word aligned (that would be 4 byte boundary)
4142
4143 commentary:
4144 Tag index tables (also known as the function table) for exception
4145 handling, debugging, etc. */
4146
4147 static void
ppc_pdata(ignore)4148 ppc_pdata (ignore)
4149 int ignore ATTRIBUTE_UNUSED;
4150 {
4151 if (pdata_section == 0)
4152 {
4153 pdata_section = subseg_new (".pdata", 0);
4154
4155 bfd_set_section_flags (stdoutput, pdata_section,
4156 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4157 | SEC_READONLY | SEC_DATA ));
4158
4159 bfd_set_section_alignment (stdoutput, pdata_section, 2);
4160 }
4161 else
4162 {
4163 pdata_section = subseg_new (".pdata", 0);
4164 }
4165 ppc_set_current_section (pdata_section);
4166 }
4167
4168 /* pseudo-op: .ydata
4169 behaviour: predefined read only data section
4170 double word aligned
4171 errors: None
4172 warnings: None
4173 initial: .section .ydata "drw3"
4174 a - don't know -- maybe a misprint
4175 d - initialized data
4176 r - readable
4177 3 - double word aligned (that would be 4 byte boundary)
4178 commentary:
4179 Tag tables (also known as the scope table) for exception handling,
4180 debugging, etc. */
4181
4182 static void
ppc_ydata(ignore)4183 ppc_ydata (ignore)
4184 int ignore ATTRIBUTE_UNUSED;
4185 {
4186 if (ydata_section == 0)
4187 {
4188 ydata_section = subseg_new (".ydata", 0);
4189 bfd_set_section_flags (stdoutput, ydata_section,
4190 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4191 | SEC_READONLY | SEC_DATA ));
4192
4193 bfd_set_section_alignment (stdoutput, ydata_section, 3);
4194 }
4195 else
4196 {
4197 ydata_section = subseg_new (".ydata", 0);
4198 }
4199 ppc_set_current_section (ydata_section);
4200 }
4201
4202 /* pseudo-op: .reldata
4203 behaviour: predefined read write data section
4204 double word aligned (4-byte)
4205 FIXME: relocation is applied to it
4206 FIXME: what's the difference between this and .data?
4207 errors: None
4208 warnings: None
4209 initial: .section .reldata "drw3"
4210 d - initialized data
4211 r - readable
4212 w - writeable
4213 3 - double word aligned (that would be 8 byte boundary)
4214
4215 commentary:
4216 Like .data, but intended to hold data subject to relocation, such as
4217 function descriptors, etc. */
4218
4219 static void
ppc_reldata(ignore)4220 ppc_reldata (ignore)
4221 int ignore ATTRIBUTE_UNUSED;
4222 {
4223 if (reldata_section == 0)
4224 {
4225 reldata_section = subseg_new (".reldata", 0);
4226
4227 bfd_set_section_flags (stdoutput, reldata_section,
4228 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4229 | SEC_DATA));
4230
4231 bfd_set_section_alignment (stdoutput, reldata_section, 2);
4232 }
4233 else
4234 {
4235 reldata_section = subseg_new (".reldata", 0);
4236 }
4237 ppc_set_current_section (reldata_section);
4238 }
4239
4240 /* pseudo-op: .rdata
4241 behaviour: predefined read only data section
4242 double word aligned
4243 errors: None
4244 warnings: None
4245 initial: .section .rdata "dr3"
4246 d - initialized data
4247 r - readable
4248 3 - double word aligned (that would be 4 byte boundary) */
4249
4250 static void
ppc_rdata(ignore)4251 ppc_rdata (ignore)
4252 int ignore ATTRIBUTE_UNUSED;
4253 {
4254 if (rdata_section == 0)
4255 {
4256 rdata_section = subseg_new (".rdata", 0);
4257 bfd_set_section_flags (stdoutput, rdata_section,
4258 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4259 | SEC_READONLY | SEC_DATA ));
4260
4261 bfd_set_section_alignment (stdoutput, rdata_section, 2);
4262 }
4263 else
4264 {
4265 rdata_section = subseg_new (".rdata", 0);
4266 }
4267 ppc_set_current_section (rdata_section);
4268 }
4269
4270 /* pseudo-op: .ualong
4271 behaviour: much like .int, with the exception that no alignment is
4272 performed.
4273 FIXME: test the alignment statement
4274 errors: None
4275 warnings: None */
4276
4277 static void
ppc_ualong(ignore)4278 ppc_ualong (ignore)
4279 int ignore ATTRIBUTE_UNUSED;
4280 {
4281 /* Try for long. */
4282 cons (4);
4283 }
4284
4285 /* pseudo-op: .znop <symbol name>
4286 behaviour: Issue a nop instruction
4287 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
4288 the supplied symbol name.
4289 errors: None
4290 warnings: Missing symbol name */
4291
4292 static void
ppc_znop(ignore)4293 ppc_znop (ignore)
4294 int ignore ATTRIBUTE_UNUSED;
4295 {
4296 unsigned long insn;
4297 const struct powerpc_opcode *opcode;
4298 expressionS ex;
4299 char *f;
4300 symbolS *sym;
4301 char *symbol_name;
4302 char c;
4303 char *name;
4304 unsigned int exp;
4305 flagword flags;
4306 asection *sec;
4307
4308 /* Strip out the symbol name. */
4309 symbol_name = input_line_pointer;
4310 c = get_symbol_end ();
4311
4312 name = xmalloc (input_line_pointer - symbol_name + 1);
4313 strcpy (name, symbol_name);
4314
4315 sym = symbol_find_or_make (name);
4316
4317 *input_line_pointer = c;
4318
4319 SKIP_WHITESPACE ();
4320
4321 /* Look up the opcode in the hash table. */
4322 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop");
4323
4324 /* Stick in the nop. */
4325 insn = opcode->opcode;
4326
4327 /* Write out the instruction. */
4328 f = frag_more (4);
4329 md_number_to_chars (f, insn, 4);
4330 fix_new (frag_now,
4331 f - frag_now->fr_literal,
4332 4,
4333 sym,
4334 0,
4335 0,
4336 BFD_RELOC_16_GOT_PCREL);
4337
4338 }
4339
4340 /* pseudo-op:
4341 behaviour:
4342 errors:
4343 warnings: */
4344
4345 static void
ppc_pe_comm(lcomm)4346 ppc_pe_comm (lcomm)
4347 int lcomm;
4348 {
4349 register char *name;
4350 register char c;
4351 register char *p;
4352 offsetT temp;
4353 register symbolS *symbolP;
4354 offsetT align;
4355
4356 name = input_line_pointer;
4357 c = get_symbol_end ();
4358
4359 /* just after name is now '\0'. */
4360 p = input_line_pointer;
4361 *p = c;
4362 SKIP_WHITESPACE ();
4363 if (*input_line_pointer != ',')
4364 {
4365 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
4366 ignore_rest_of_line ();
4367 return;
4368 }
4369
4370 input_line_pointer++; /* skip ',' */
4371 if ((temp = get_absolute_expression ()) < 0)
4372 {
4373 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
4374 ignore_rest_of_line ();
4375 return;
4376 }
4377
4378 if (! lcomm)
4379 {
4380 /* The third argument to .comm is the alignment. */
4381 if (*input_line_pointer != ',')
4382 align = 3;
4383 else
4384 {
4385 ++input_line_pointer;
4386 align = get_absolute_expression ();
4387 if (align <= 0)
4388 {
4389 as_warn (_("ignoring bad alignment"));
4390 align = 3;
4391 }
4392 }
4393 }
4394
4395 *p = 0;
4396 symbolP = symbol_find_or_make (name);
4397
4398 *p = c;
4399 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
4400 {
4401 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
4402 S_GET_NAME (symbolP));
4403 ignore_rest_of_line ();
4404 return;
4405 }
4406
4407 if (S_GET_VALUE (symbolP))
4408 {
4409 if (S_GET_VALUE (symbolP) != (valueT) temp)
4410 as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
4411 S_GET_NAME (symbolP),
4412 (long) S_GET_VALUE (symbolP),
4413 (long) temp);
4414 }
4415 else
4416 {
4417 S_SET_VALUE (symbolP, (valueT) temp);
4418 S_SET_EXTERNAL (symbolP);
4419 S_SET_SEGMENT (symbolP, bfd_com_section_ptr);
4420 }
4421
4422 demand_empty_rest_of_line ();
4423 }
4424
4425 /*
4426 * implement the .section pseudo op:
4427 * .section name {, "flags"}
4428 * ^ ^
4429 * | +--- optional flags: 'b' for bss
4430 * | 'i' for info
4431 * +-- section name 'l' for lib
4432 * 'n' for noload
4433 * 'o' for over
4434 * 'w' for data
4435 * 'd' (apparently m88k for data)
4436 * 'x' for text
4437 * But if the argument is not a quoted string, treat it as a
4438 * subsegment number.
4439 *
4440 * FIXME: this is a copy of the section processing from obj-coff.c, with
4441 * additions/changes for the moto-pas assembler support. There are three
4442 * categories:
4443 *
4444 * FIXME: I just noticed this. This doesn't work at all really. It it
4445 * setting bits that bfd probably neither understands or uses. The
4446 * correct approach (?) will have to incorporate extra fields attached
4447 * to the section to hold the system specific stuff. (krk)
4448 *
4449 * Section Contents:
4450 * 'a' - unknown - referred to in documentation, but no definition supplied
4451 * 'c' - section has code
4452 * 'd' - section has initialized data
4453 * 'u' - section has uninitialized data
4454 * 'i' - section contains directives (info)
4455 * 'n' - section can be discarded
4456 * 'R' - remove section at link time
4457 *
4458 * Section Protection:
4459 * 'r' - section is readable
4460 * 'w' - section is writeable
4461 * 'x' - section is executable
4462 * 's' - section is sharable
4463 *
4464 * Section Alignment:
4465 * '0' - align to byte boundary
4466 * '1' - align to halfword undary
4467 * '2' - align to word boundary
4468 * '3' - align to doubleword boundary
4469 * '4' - align to quadword boundary
4470 * '5' - align to 32 byte boundary
4471 * '6' - align to 64 byte boundary
4472 *
4473 */
4474
4475 void
ppc_pe_section(ignore)4476 ppc_pe_section (ignore)
4477 int ignore ATTRIBUTE_UNUSED;
4478 {
4479 /* Strip out the section name. */
4480 char *section_name;
4481 char c;
4482 char *name;
4483 unsigned int exp;
4484 flagword flags;
4485 segT sec;
4486 int align;
4487
4488 section_name = input_line_pointer;
4489 c = get_symbol_end ();
4490
4491 name = xmalloc (input_line_pointer - section_name + 1);
4492 strcpy (name, section_name);
4493
4494 *input_line_pointer = c;
4495
4496 SKIP_WHITESPACE ();
4497
4498 exp = 0;
4499 flags = SEC_NO_FLAGS;
4500
4501 if (strcmp (name, ".idata$2") == 0)
4502 {
4503 align = 0;
4504 }
4505 else if (strcmp (name, ".idata$3") == 0)
4506 {
4507 align = 0;
4508 }
4509 else if (strcmp (name, ".idata$4") == 0)
4510 {
4511 align = 2;
4512 }
4513 else if (strcmp (name, ".idata$5") == 0)
4514 {
4515 align = 2;
4516 }
4517 else if (strcmp (name, ".idata$6") == 0)
4518 {
4519 align = 1;
4520 }
4521 else
4522 /* Default alignment to 16 byte boundary. */
4523 align = 4;
4524
4525 if (*input_line_pointer == ',')
4526 {
4527 ++input_line_pointer;
4528 SKIP_WHITESPACE ();
4529 if (*input_line_pointer != '"')
4530 exp = get_absolute_expression ();
4531 else
4532 {
4533 ++input_line_pointer;
4534 while (*input_line_pointer != '"'
4535 && ! is_end_of_line[(unsigned char) *input_line_pointer])
4536 {
4537 switch (*input_line_pointer)
4538 {
4539 /* Section Contents */
4540 case 'a': /* unknown */
4541 as_bad (_("Unsupported section attribute -- 'a'"));
4542 break;
4543 case 'c': /* code section */
4544 flags |= SEC_CODE;
4545 break;
4546 case 'd': /* section has initialized data */
4547 flags |= SEC_DATA;
4548 break;
4549 case 'u': /* section has uninitialized data */
4550 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
4551 in winnt.h */
4552 flags |= SEC_ROM;
4553 break;
4554 case 'i': /* section contains directives (info) */
4555 /* FIXME: This is IMAGE_SCN_LNK_INFO
4556 in winnt.h */
4557 flags |= SEC_HAS_CONTENTS;
4558 break;
4559 case 'n': /* section can be discarded */
4560 flags &=~ SEC_LOAD;
4561 break;
4562 case 'R': /* Remove section at link time */
4563 flags |= SEC_NEVER_LOAD;
4564 break;
4565
4566 /* Section Protection */
4567 case 'r': /* section is readable */
4568 flags |= IMAGE_SCN_MEM_READ;
4569 break;
4570 case 'w': /* section is writeable */
4571 flags |= IMAGE_SCN_MEM_WRITE;
4572 break;
4573 case 'x': /* section is executable */
4574 flags |= IMAGE_SCN_MEM_EXECUTE;
4575 break;
4576 case 's': /* section is sharable */
4577 flags |= IMAGE_SCN_MEM_SHARED;
4578 break;
4579
4580 /* Section Alignment */
4581 case '0': /* align to byte boundary */
4582 flags |= IMAGE_SCN_ALIGN_1BYTES;
4583 align = 0;
4584 break;
4585 case '1': /* align to halfword boundary */
4586 flags |= IMAGE_SCN_ALIGN_2BYTES;
4587 align = 1;
4588 break;
4589 case '2': /* align to word boundary */
4590 flags |= IMAGE_SCN_ALIGN_4BYTES;
4591 align = 2;
4592 break;
4593 case '3': /* align to doubleword boundary */
4594 flags |= IMAGE_SCN_ALIGN_8BYTES;
4595 align = 3;
4596 break;
4597 case '4': /* align to quadword boundary */
4598 flags |= IMAGE_SCN_ALIGN_16BYTES;
4599 align = 4;
4600 break;
4601 case '5': /* align to 32 byte boundary */
4602 flags |= IMAGE_SCN_ALIGN_32BYTES;
4603 align = 5;
4604 break;
4605 case '6': /* align to 64 byte boundary */
4606 flags |= IMAGE_SCN_ALIGN_64BYTES;
4607 align = 6;
4608 break;
4609
4610 default:
4611 as_bad (_("unknown section attribute '%c'"),
4612 *input_line_pointer);
4613 break;
4614 }
4615 ++input_line_pointer;
4616 }
4617 if (*input_line_pointer == '"')
4618 ++input_line_pointer;
4619 }
4620 }
4621
4622 sec = subseg_new (name, (subsegT) exp);
4623
4624 ppc_set_current_section (sec);
4625
4626 if (flags != SEC_NO_FLAGS)
4627 {
4628 if (! bfd_set_section_flags (stdoutput, sec, flags))
4629 as_bad (_("error setting flags for \"%s\": %s"),
4630 bfd_section_name (stdoutput, sec),
4631 bfd_errmsg (bfd_get_error ()));
4632 }
4633
4634 bfd_set_section_alignment (stdoutput, sec, align);
4635
4636 }
4637
4638 static void
ppc_pe_function(ignore)4639 ppc_pe_function (ignore)
4640 int ignore ATTRIBUTE_UNUSED;
4641 {
4642 char *name;
4643 char endc;
4644 symbolS *ext_sym;
4645
4646 name = input_line_pointer;
4647 endc = get_symbol_end ();
4648
4649 ext_sym = symbol_find_or_make (name);
4650
4651 *input_line_pointer = endc;
4652
4653 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
4654 SF_SET_FUNCTION (ext_sym);
4655 SF_SET_PROCESS (ext_sym);
4656 coff_add_linesym (ext_sym);
4657
4658 demand_empty_rest_of_line ();
4659 }
4660
4661 static void
ppc_pe_tocd(ignore)4662 ppc_pe_tocd (ignore)
4663 int ignore ATTRIBUTE_UNUSED;
4664 {
4665 if (tocdata_section == 0)
4666 {
4667 tocdata_section = subseg_new (".tocd", 0);
4668 /* FIXME: section flags won't work. */
4669 bfd_set_section_flags (stdoutput, tocdata_section,
4670 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4671 | SEC_READONLY | SEC_DATA));
4672
4673 bfd_set_section_alignment (stdoutput, tocdata_section, 2);
4674 }
4675 else
4676 {
4677 rdata_section = subseg_new (".tocd", 0);
4678 }
4679
4680 ppc_set_current_section (tocdata_section);
4681
4682 demand_empty_rest_of_line ();
4683 }
4684
4685 /* Don't adjust TOC relocs to use the section symbol. */
4686
4687 int
ppc_pe_fix_adjustable(fix)4688 ppc_pe_fix_adjustable (fix)
4689 fixS *fix;
4690 {
4691 return fix->fx_r_type != BFD_RELOC_PPC_TOC16;
4692 }
4693
4694 #endif
4695
4696 #ifdef OBJ_XCOFF
4697
4698 /* XCOFF specific symbol and file handling. */
4699
4700 /* Canonicalize the symbol name. We use the to force the suffix, if
4701 any, to use square brackets, and to be in upper case. */
4702
4703 char *
ppc_canonicalize_symbol_name(name)4704 ppc_canonicalize_symbol_name (name)
4705 char *name;
4706 {
4707 char *s;
4708
4709 if (ppc_stab_symbol)
4710 return name;
4711
4712 for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
4713 ;
4714 if (*s != '\0')
4715 {
4716 char brac;
4717
4718 if (*s == '[')
4719 brac = ']';
4720 else
4721 {
4722 *s = '[';
4723 brac = '}';
4724 }
4725
4726 for (s++; *s != '\0' && *s != brac; s++)
4727 *s = TOUPPER (*s);
4728
4729 if (*s == '\0' || s[1] != '\0')
4730 as_bad (_("bad symbol suffix"));
4731
4732 *s = ']';
4733 }
4734
4735 return name;
4736 }
4737
4738 /* Set the class of a symbol based on the suffix, if any. This is
4739 called whenever a new symbol is created. */
4740
4741 void
ppc_symbol_new_hook(sym)4742 ppc_symbol_new_hook (sym)
4743 symbolS *sym;
4744 {
4745 struct ppc_tc_sy *tc;
4746 const char *s;
4747
4748 tc = symbol_get_tc (sym);
4749 tc->next = NULL;
4750 tc->output = 0;
4751 tc->class = -1;
4752 tc->real_name = NULL;
4753 tc->subseg = 0;
4754 tc->align = 0;
4755 tc->size = NULL;
4756 tc->within = NULL;
4757
4758 if (ppc_stab_symbol)
4759 return;
4760
4761 s = strchr (S_GET_NAME (sym), '[');
4762 if (s == (const char *) NULL)
4763 {
4764 /* There is no suffix. */
4765 return;
4766 }
4767
4768 ++s;
4769
4770 switch (s[0])
4771 {
4772 case 'B':
4773 if (strcmp (s, "BS]") == 0)
4774 tc->class = XMC_BS;
4775 break;
4776 case 'D':
4777 if (strcmp (s, "DB]") == 0)
4778 tc->class = XMC_DB;
4779 else if (strcmp (s, "DS]") == 0)
4780 tc->class = XMC_DS;
4781 break;
4782 case 'G':
4783 if (strcmp (s, "GL]") == 0)
4784 tc->class = XMC_GL;
4785 break;
4786 case 'P':
4787 if (strcmp (s, "PR]") == 0)
4788 tc->class = XMC_PR;
4789 break;
4790 case 'R':
4791 if (strcmp (s, "RO]") == 0)
4792 tc->class = XMC_RO;
4793 else if (strcmp (s, "RW]") == 0)
4794 tc->class = XMC_RW;
4795 break;
4796 case 'S':
4797 if (strcmp (s, "SV]") == 0)
4798 tc->class = XMC_SV;
4799 break;
4800 case 'T':
4801 if (strcmp (s, "TC]") == 0)
4802 tc->class = XMC_TC;
4803 else if (strcmp (s, "TI]") == 0)
4804 tc->class = XMC_TI;
4805 else if (strcmp (s, "TB]") == 0)
4806 tc->class = XMC_TB;
4807 else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
4808 tc->class = XMC_TC0;
4809 break;
4810 case 'U':
4811 if (strcmp (s, "UA]") == 0)
4812 tc->class = XMC_UA;
4813 else if (strcmp (s, "UC]") == 0)
4814 tc->class = XMC_UC;
4815 break;
4816 case 'X':
4817 if (strcmp (s, "XO]") == 0)
4818 tc->class = XMC_XO;
4819 break;
4820 }
4821
4822 if (tc->class == -1)
4823 as_bad (_("Unrecognized symbol suffix"));
4824 }
4825
4826 /* Set the class of a label based on where it is defined. This
4827 handles symbols without suffixes. Also, move the symbol so that it
4828 follows the csect symbol. */
4829
4830 void
ppc_frob_label(sym)4831 ppc_frob_label (sym)
4832 symbolS *sym;
4833 {
4834 if (ppc_current_csect != (symbolS *) NULL)
4835 {
4836 if (symbol_get_tc (sym)->class == -1)
4837 symbol_get_tc (sym)->class = symbol_get_tc (ppc_current_csect)->class;
4838
4839 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
4840 symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
4841 &symbol_rootP, &symbol_lastP);
4842 symbol_get_tc (ppc_current_csect)->within = sym;
4843 }
4844
4845 #ifdef OBJ_ELF
4846 dwarf2_emit_label (sym);
4847 #endif
4848 }
4849
4850 /* This variable is set by ppc_frob_symbol if any absolute symbols are
4851 seen. It tells ppc_adjust_symtab whether it needs to look through
4852 the symbols. */
4853
4854 static bfd_boolean ppc_saw_abs;
4855
4856 /* Change the name of a symbol just before writing it out. Set the
4857 real name if the .rename pseudo-op was used. Otherwise, remove any
4858 class suffix. Return 1 if the symbol should not be included in the
4859 symbol table. */
4860
4861 int
ppc_frob_symbol(sym)4862 ppc_frob_symbol (sym)
4863 symbolS *sym;
4864 {
4865 static symbolS *ppc_last_function;
4866 static symbolS *set_end;
4867
4868 /* Discard symbols that should not be included in the output symbol
4869 table. */
4870 if (! symbol_used_in_reloc_p (sym)
4871 && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
4872 || (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym))
4873 && ! symbol_get_tc (sym)->output
4874 && S_GET_STORAGE_CLASS (sym) != C_FILE)))
4875 return 1;
4876
4877 /* This one will disappear anyway. Don't make a csect sym for it. */
4878 if (sym == abs_section_sym)
4879 return 1;
4880
4881 if (symbol_get_tc (sym)->real_name != (char *) NULL)
4882 S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
4883 else
4884 {
4885 const char *name;
4886 const char *s;
4887
4888 name = S_GET_NAME (sym);
4889 s = strchr (name, '[');
4890 if (s != (char *) NULL)
4891 {
4892 unsigned int len;
4893 char *snew;
4894
4895 len = s - name;
4896 snew = xmalloc (len + 1);
4897 memcpy (snew, name, len);
4898 snew[len] = '\0';
4899
4900 S_SET_NAME (sym, snew);
4901 }
4902 }
4903
4904 if (set_end != (symbolS *) NULL)
4905 {
4906 SA_SET_SYM_ENDNDX (set_end, sym);
4907 set_end = NULL;
4908 }
4909
4910 if (SF_GET_FUNCTION (sym))
4911 {
4912 if (ppc_last_function != (symbolS *) NULL)
4913 as_bad (_("two .function pseudo-ops with no intervening .ef"));
4914 ppc_last_function = sym;
4915 if (symbol_get_tc (sym)->size != (symbolS *) NULL)
4916 {
4917 resolve_symbol_value (symbol_get_tc (sym)->size);
4918 SA_SET_SYM_FSIZE (sym,
4919 (long) S_GET_VALUE (symbol_get_tc (sym)->size));
4920 }
4921 }
4922 else if (S_GET_STORAGE_CLASS (sym) == C_FCN
4923 && strcmp (S_GET_NAME (sym), ".ef") == 0)
4924 {
4925 if (ppc_last_function == (symbolS *) NULL)
4926 as_bad (_(".ef with no preceding .function"));
4927 else
4928 {
4929 set_end = ppc_last_function;
4930 ppc_last_function = NULL;
4931
4932 /* We don't have a C_EFCN symbol, but we need to force the
4933 COFF backend to believe that it has seen one. */
4934 coff_last_function = NULL;
4935 }
4936 }
4937
4938 if (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym))
4939 && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
4940 && S_GET_STORAGE_CLASS (sym) != C_FILE
4941 && S_GET_STORAGE_CLASS (sym) != C_FCN
4942 && S_GET_STORAGE_CLASS (sym) != C_BLOCK
4943 && S_GET_STORAGE_CLASS (sym) != C_BSTAT
4944 && S_GET_STORAGE_CLASS (sym) != C_ESTAT
4945 && S_GET_STORAGE_CLASS (sym) != C_BINCL
4946 && S_GET_STORAGE_CLASS (sym) != C_EINCL
4947 && S_GET_SEGMENT (sym) != ppc_coff_debug_section)
4948 S_SET_STORAGE_CLASS (sym, C_HIDEXT);
4949
4950 if (S_GET_STORAGE_CLASS (sym) == C_EXT
4951 || S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
4952 {
4953 int i;
4954 union internal_auxent *a;
4955
4956 /* Create a csect aux. */
4957 i = S_GET_NUMBER_AUXILIARY (sym);
4958 S_SET_NUMBER_AUXILIARY (sym, i + 1);
4959 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent;
4960 if (symbol_get_tc (sym)->class == XMC_TC0)
4961 {
4962 /* This is the TOC table. */
4963 know (strcmp (S_GET_NAME (sym), "TOC") == 0);
4964 a->x_csect.x_scnlen.l = 0;
4965 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
4966 }
4967 else if (symbol_get_tc (sym)->subseg != 0)
4968 {
4969 /* This is a csect symbol. x_scnlen is the size of the
4970 csect. */
4971 if (symbol_get_tc (sym)->next == (symbolS *) NULL)
4972 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4973 S_GET_SEGMENT (sym))
4974 - S_GET_VALUE (sym));
4975 else
4976 {
4977 resolve_symbol_value (symbol_get_tc (sym)->next);
4978 a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next)
4979 - S_GET_VALUE (sym));
4980 }
4981 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD;
4982 }
4983 else if (S_GET_SEGMENT (sym) == bss_section)
4984 {
4985 /* This is a common symbol. */
4986 a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset;
4987 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM;
4988 if (S_IS_EXTERNAL (sym))
4989 symbol_get_tc (sym)->class = XMC_RW;
4990 else
4991 symbol_get_tc (sym)->class = XMC_BS;
4992 }
4993 else if (S_GET_SEGMENT (sym) == absolute_section)
4994 {
4995 /* This is an absolute symbol. The csect will be created by
4996 ppc_adjust_symtab. */
4997 ppc_saw_abs = TRUE;
4998 a->x_csect.x_smtyp = XTY_LD;
4999 if (symbol_get_tc (sym)->class == -1)
5000 symbol_get_tc (sym)->class = XMC_XO;
5001 }
5002 else if (! S_IS_DEFINED (sym))
5003 {
5004 /* This is an external symbol. */
5005 a->x_csect.x_scnlen.l = 0;
5006 a->x_csect.x_smtyp = XTY_ER;
5007 }
5008 else if (symbol_get_tc (sym)->class == XMC_TC)
5009 {
5010 symbolS *next;
5011
5012 /* This is a TOC definition. x_scnlen is the size of the
5013 TOC entry. */
5014 next = symbol_next (sym);
5015 while (symbol_get_tc (next)->class == XMC_TC0)
5016 next = symbol_next (next);
5017 if (next == (symbolS *) NULL
5018 || symbol_get_tc (next)->class != XMC_TC)
5019 {
5020 if (ppc_after_toc_frag == (fragS *) NULL)
5021 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
5022 data_section)
5023 - S_GET_VALUE (sym));
5024 else
5025 a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address
5026 - S_GET_VALUE (sym));
5027 }
5028 else
5029 {
5030 resolve_symbol_value (next);
5031 a->x_csect.x_scnlen.l = (S_GET_VALUE (next)
5032 - S_GET_VALUE (sym));
5033 }
5034 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
5035 }
5036 else
5037 {
5038 symbolS *csect;
5039
5040 /* This is a normal symbol definition. x_scnlen is the
5041 symbol index of the containing csect. */
5042 if (S_GET_SEGMENT (sym) == text_section)
5043 csect = ppc_text_csects;
5044 else if (S_GET_SEGMENT (sym) == data_section)
5045 csect = ppc_data_csects;
5046 else
5047 abort ();
5048
5049 /* Skip the initial dummy symbol. */
5050 csect = symbol_get_tc (csect)->next;
5051
5052 if (csect == (symbolS *) NULL)
5053 {
5054 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
5055 a->x_csect.x_scnlen.l = 0;
5056 }
5057 else
5058 {
5059 while (symbol_get_tc (csect)->next != (symbolS *) NULL)
5060 {
5061 resolve_symbol_value (symbol_get_tc (csect)->next);
5062 if (S_GET_VALUE (symbol_get_tc (csect)->next)
5063 > S_GET_VALUE (sym))
5064 break;
5065 csect = symbol_get_tc (csect)->next;
5066 }
5067
5068 a->x_csect.x_scnlen.p =
5069 coffsymbol (symbol_get_bfdsym (csect))->native;
5070 coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen =
5071 1;
5072 }
5073 a->x_csect.x_smtyp = XTY_LD;
5074 }
5075
5076 a->x_csect.x_parmhash = 0;
5077 a->x_csect.x_snhash = 0;
5078 if (symbol_get_tc (sym)->class == -1)
5079 a->x_csect.x_smclas = XMC_PR;
5080 else
5081 a->x_csect.x_smclas = symbol_get_tc (sym)->class;
5082 a->x_csect.x_stab = 0;
5083 a->x_csect.x_snstab = 0;
5084
5085 /* Don't let the COFF backend resort these symbols. */
5086 symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
5087 }
5088 else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
5089 {
5090 /* We want the value to be the symbol index of the referenced
5091 csect symbol. BFD will do that for us if we set the right
5092 flags. */
5093 asymbol *bsym = symbol_get_bfdsym (symbol_get_tc (sym)->within);
5094 combined_entry_type *c = coffsymbol (bsym)->native;
5095
5096 S_SET_VALUE (sym, (valueT) (size_t) c);
5097 coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
5098 }
5099 else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
5100 {
5101 symbolS *block;
5102 symbolS *csect;
5103
5104 /* The value is the offset from the enclosing csect. */
5105 block = symbol_get_tc (sym)->within;
5106 csect = symbol_get_tc (block)->within;
5107 resolve_symbol_value (csect);
5108 S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect));
5109 }
5110 else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
5111 || S_GET_STORAGE_CLASS (sym) == C_EINCL)
5112 {
5113 /* We want the value to be a file offset into the line numbers.
5114 BFD will do that for us if we set the right flags. We have
5115 already set the value correctly. */
5116 coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
5117 }
5118
5119 return 0;
5120 }
5121
5122 /* Adjust the symbol table. This creates csect symbols for all
5123 absolute symbols. */
5124
5125 void
ppc_adjust_symtab()5126 ppc_adjust_symtab ()
5127 {
5128 symbolS *sym;
5129
5130 if (! ppc_saw_abs)
5131 return;
5132
5133 for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
5134 {
5135 symbolS *csect;
5136 int i;
5137 union internal_auxent *a;
5138
5139 if (S_GET_SEGMENT (sym) != absolute_section)
5140 continue;
5141
5142 csect = symbol_create (".abs[XO]", absolute_section,
5143 S_GET_VALUE (sym), &zero_address_frag);
5144 symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
5145 S_SET_STORAGE_CLASS (csect, C_HIDEXT);
5146 i = S_GET_NUMBER_AUXILIARY (csect);
5147 S_SET_NUMBER_AUXILIARY (csect, i + 1);
5148 a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent;
5149 a->x_csect.x_scnlen.l = 0;
5150 a->x_csect.x_smtyp = XTY_SD;
5151 a->x_csect.x_parmhash = 0;
5152 a->x_csect.x_snhash = 0;
5153 a->x_csect.x_smclas = XMC_XO;
5154 a->x_csect.x_stab = 0;
5155 a->x_csect.x_snstab = 0;
5156
5157 symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
5158
5159 i = S_GET_NUMBER_AUXILIARY (sym);
5160 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent;
5161 a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native;
5162 coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1;
5163 }
5164
5165 ppc_saw_abs = FALSE;
5166 }
5167
5168 /* Set the VMA for a section. This is called on all the sections in
5169 turn. */
5170
5171 void
ppc_frob_section(sec)5172 ppc_frob_section (sec)
5173 asection *sec;
5174 {
5175 static bfd_vma vma = 0;
5176
5177 vma = md_section_align (sec, vma);
5178 bfd_set_section_vma (stdoutput, sec, vma);
5179 vma += bfd_section_size (stdoutput, sec);
5180 }
5181
5182 #endif /* OBJ_XCOFF */
5183
5184 /* Turn a string in input_line_pointer into a floating point constant
5185 of type TYPE, and store the appropriate bytes in *LITP. The number
5186 of LITTLENUMS emitted is stored in *SIZEP. An error message is
5187 returned, or NULL on OK. */
5188
5189 char *
md_atof(type,litp,sizep)5190 md_atof (type, litp, sizep)
5191 int type;
5192 char *litp;
5193 int *sizep;
5194 {
5195 int prec;
5196 LITTLENUM_TYPE words[4];
5197 char *t;
5198 int i;
5199
5200 switch (type)
5201 {
5202 case 'f':
5203 prec = 2;
5204 break;
5205
5206 case 'd':
5207 prec = 4;
5208 break;
5209
5210 default:
5211 *sizep = 0;
5212 return _("bad call to md_atof");
5213 }
5214
5215 t = atof_ieee (input_line_pointer, type, words);
5216 if (t)
5217 input_line_pointer = t;
5218
5219 *sizep = prec * 2;
5220
5221 if (target_big_endian)
5222 {
5223 for (i = 0; i < prec; i++)
5224 {
5225 md_number_to_chars (litp, (valueT) words[i], 2);
5226 litp += 2;
5227 }
5228 }
5229 else
5230 {
5231 for (i = prec - 1; i >= 0; i--)
5232 {
5233 md_number_to_chars (litp, (valueT) words[i], 2);
5234 litp += 2;
5235 }
5236 }
5237
5238 return NULL;
5239 }
5240
5241 /* Write a value out to the object file, using the appropriate
5242 endianness. */
5243
5244 void
md_number_to_chars(buf,val,n)5245 md_number_to_chars (buf, val, n)
5246 char *buf;
5247 valueT val;
5248 int n;
5249 {
5250 if (target_big_endian)
5251 number_to_chars_bigendian (buf, val, n);
5252 else
5253 number_to_chars_littleendian (buf, val, n);
5254 }
5255
5256 /* Align a section (I don't know why this is machine dependent). */
5257
5258 valueT
md_section_align(seg,addr)5259 md_section_align (seg, addr)
5260 asection *seg;
5261 valueT addr;
5262 {
5263 int align = bfd_get_section_alignment (stdoutput, seg);
5264
5265 return ((addr + (1 << align) - 1) & (-1 << align));
5266 }
5267
5268 /* We don't have any form of relaxing. */
5269
5270 int
md_estimate_size_before_relax(fragp,seg)5271 md_estimate_size_before_relax (fragp, seg)
5272 fragS *fragp ATTRIBUTE_UNUSED;
5273 asection *seg ATTRIBUTE_UNUSED;
5274 {
5275 abort ();
5276 return 0;
5277 }
5278
5279 /* Convert a machine dependent frag. We never generate these. */
5280
5281 void
md_convert_frag(abfd,sec,fragp)5282 md_convert_frag (abfd, sec, fragp)
5283 bfd *abfd ATTRIBUTE_UNUSED;
5284 asection *sec ATTRIBUTE_UNUSED;
5285 fragS *fragp ATTRIBUTE_UNUSED;
5286 {
5287 abort ();
5288 }
5289
5290 /* We have no need to default values of symbols. */
5291
5292 symbolS *
md_undefined_symbol(name)5293 md_undefined_symbol (name)
5294 char *name ATTRIBUTE_UNUSED;
5295 {
5296 return 0;
5297 }
5298
5299 /* Functions concerning relocs. */
5300
5301 /* The location from which a PC relative jump should be calculated,
5302 given a PC relative reloc. */
5303
5304 long
md_pcrel_from_section(fixp,sec)5305 md_pcrel_from_section (fixp, sec)
5306 fixS *fixp;
5307 segT sec ATTRIBUTE_UNUSED;
5308 {
5309 return fixp->fx_frag->fr_address + fixp->fx_where;
5310 }
5311
5312 #ifdef OBJ_XCOFF
5313
5314 /* This is called to see whether a fixup should be adjusted to use a
5315 section symbol. We take the opportunity to change a fixup against
5316 a symbol in the TOC subsegment into a reloc against the
5317 corresponding .tc symbol. */
5318
5319 int
ppc_fix_adjustable(fix)5320 ppc_fix_adjustable (fix)
5321 fixS *fix;
5322 {
5323 valueT val = resolve_symbol_value (fix->fx_addsy);
5324 segT symseg = S_GET_SEGMENT (fix->fx_addsy);
5325 TC_SYMFIELD_TYPE *tc;
5326
5327 if (symseg == absolute_section)
5328 return 0;
5329
5330 if (ppc_toc_csect != (symbolS *) NULL
5331 && fix->fx_addsy != ppc_toc_csect
5332 && symseg == data_section
5333 && val >= ppc_toc_frag->fr_address
5334 && (ppc_after_toc_frag == (fragS *) NULL
5335 || val < ppc_after_toc_frag->fr_address))
5336 {
5337 symbolS *sy;
5338
5339 for (sy = symbol_next (ppc_toc_csect);
5340 sy != (symbolS *) NULL;
5341 sy = symbol_next (sy))
5342 {
5343 TC_SYMFIELD_TYPE *sy_tc = symbol_get_tc (sy);
5344
5345 if (sy_tc->class == XMC_TC0)
5346 continue;
5347 if (sy_tc->class != XMC_TC)
5348 break;
5349 if (val == resolve_symbol_value (sy))
5350 {
5351 fix->fx_addsy = sy;
5352 fix->fx_addnumber = val - ppc_toc_frag->fr_address;
5353 return 0;
5354 }
5355 }
5356
5357 as_bad_where (fix->fx_file, fix->fx_line,
5358 _("symbol in .toc does not match any .tc"));
5359 }
5360
5361 /* Possibly adjust the reloc to be against the csect. */
5362 tc = symbol_get_tc (fix->fx_addsy);
5363 if (tc->subseg == 0
5364 && tc->class != XMC_TC0
5365 && tc->class != XMC_TC
5366 && symseg != bss_section
5367 /* Don't adjust if this is a reloc in the toc section. */
5368 && (symseg != data_section
5369 || ppc_toc_csect == NULL
5370 || val < ppc_toc_frag->fr_address
5371 || (ppc_after_toc_frag != NULL
5372 && val >= ppc_after_toc_frag->fr_address)))
5373 {
5374 symbolS *csect;
5375 symbolS *next_csect;
5376
5377 if (symseg == text_section)
5378 csect = ppc_text_csects;
5379 else if (symseg == data_section)
5380 csect = ppc_data_csects;
5381 else
5382 abort ();
5383
5384 /* Skip the initial dummy symbol. */
5385 csect = symbol_get_tc (csect)->next;
5386
5387 if (csect != (symbolS *) NULL)
5388 {
5389 while ((next_csect = symbol_get_tc (csect)->next) != (symbolS *) NULL
5390 && (symbol_get_frag (next_csect)->fr_address <= val))
5391 {
5392 /* If the csect address equals the symbol value, then we
5393 have to look through the full symbol table to see
5394 whether this is the csect we want. Note that we will
5395 only get here if the csect has zero length. */
5396 if (symbol_get_frag (csect)->fr_address == val
5397 && S_GET_VALUE (csect) == val)
5398 {
5399 symbolS *scan;
5400
5401 for (scan = symbol_next (csect);
5402 scan != NULL;
5403 scan = symbol_next (scan))
5404 {
5405 if (symbol_get_tc (scan)->subseg != 0)
5406 break;
5407 if (scan == fix->fx_addsy)
5408 break;
5409 }
5410
5411 /* If we found the symbol before the next csect
5412 symbol, then this is the csect we want. */
5413 if (scan == fix->fx_addsy)
5414 break;
5415 }
5416
5417 csect = next_csect;
5418 }
5419
5420 fix->fx_offset += val - symbol_get_frag (csect)->fr_address;
5421 fix->fx_addsy = csect;
5422 }
5423 return 0;
5424 }
5425
5426 /* Adjust a reloc against a .lcomm symbol to be against the base
5427 .lcomm. */
5428 if (symseg == bss_section
5429 && ! S_IS_EXTERNAL (fix->fx_addsy))
5430 {
5431 symbolS *sy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
5432
5433 fix->fx_offset += val - resolve_symbol_value (sy);
5434 fix->fx_addsy = sy;
5435 }
5436
5437 return 0;
5438 }
5439
5440 /* A reloc from one csect to another must be kept. The assembler
5441 will, of course, keep relocs between sections, and it will keep
5442 absolute relocs, but we need to force it to keep PC relative relocs
5443 between two csects in the same section. */
5444
5445 int
ppc_force_relocation(fix)5446 ppc_force_relocation (fix)
5447 fixS *fix;
5448 {
5449 /* At this point fix->fx_addsy should already have been converted to
5450 a csect symbol. If the csect does not include the fragment, then
5451 we need to force the relocation. */
5452 if (fix->fx_pcrel
5453 && fix->fx_addsy != NULL
5454 && symbol_get_tc (fix->fx_addsy)->subseg != 0
5455 && ((symbol_get_frag (fix->fx_addsy)->fr_address
5456 > fix->fx_frag->fr_address)
5457 || (symbol_get_tc (fix->fx_addsy)->next != NULL
5458 && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
5459 <= fix->fx_frag->fr_address))))
5460 return 1;
5461
5462 return generic_force_reloc (fix);
5463 }
5464
5465 #endif /* OBJ_XCOFF */
5466
5467 #ifdef OBJ_ELF
5468 /* If this function returns non-zero, it guarantees that a relocation
5469 will be emitted for a fixup. */
5470
5471 int
ppc_force_relocation(fix)5472 ppc_force_relocation (fix)
5473 fixS *fix;
5474 {
5475 /* Branch prediction relocations must force a relocation, as must
5476 the vtable description relocs. */
5477 switch (fix->fx_r_type)
5478 {
5479 case BFD_RELOC_PPC_B16_BRTAKEN:
5480 case BFD_RELOC_PPC_B16_BRNTAKEN:
5481 case BFD_RELOC_PPC_BA16_BRTAKEN:
5482 case BFD_RELOC_PPC_BA16_BRNTAKEN:
5483 case BFD_RELOC_24_PLT_PCREL:
5484 case BFD_RELOC_PPC64_TOC:
5485 return 1;
5486 default:
5487 break;
5488 }
5489
5490 if (fix->fx_r_type >= BFD_RELOC_PPC_TLS
5491 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)
5492 return 1;
5493
5494 return generic_force_reloc (fix);
5495 }
5496
5497 int
ppc_fix_adjustable(fix)5498 ppc_fix_adjustable (fix)
5499 fixS *fix;
5500 {
5501 return (fix->fx_r_type != BFD_RELOC_16_GOTOFF
5502 && fix->fx_r_type != BFD_RELOC_LO16_GOTOFF
5503 && fix->fx_r_type != BFD_RELOC_HI16_GOTOFF
5504 && fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
5505 && fix->fx_r_type != BFD_RELOC_GPREL16
5506 && fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT
5507 && fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY
5508 && !(fix->fx_r_type >= BFD_RELOC_PPC_TLS
5509 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA));
5510 }
5511 #endif
5512
5513 /* Apply a fixup to the object code. This is called for all the
5514 fixups we generated by the call to fix_new_exp, above. In the call
5515 above we used a reloc code which was the largest legal reloc code
5516 plus the operand index. Here we undo that to recover the operand
5517 index. At this point all symbol values should be fully resolved,
5518 and we attempt to completely resolve the reloc. If we can not do
5519 that, we determine the correct reloc code and put it back in the
5520 fixup. */
5521
5522 void
md_apply_fix(fixP,valP,seg)5523 md_apply_fix (fixP, valP, seg)
5524 fixS *fixP;
5525 valueT * valP;
5526 segT seg ATTRIBUTE_UNUSED;
5527 {
5528 valueT value = * valP;
5529
5530 #ifdef OBJ_ELF
5531 if (fixP->fx_addsy != NULL)
5532 {
5533 /* Hack around bfd_install_relocation brain damage. */
5534 if (fixP->fx_pcrel)
5535 value += fixP->fx_frag->fr_address + fixP->fx_where;
5536 }
5537 else
5538 fixP->fx_done = 1;
5539 #else
5540 /* FIXME FIXME FIXME: The value we are passed in *valP includes
5541 the symbol values. If we are doing this relocation the code in
5542 write.c is going to call bfd_install_relocation, which is also
5543 going to use the symbol value. That means that if the reloc is
5544 fully resolved we want to use *valP since bfd_install_relocation is
5545 not being used.
5546 However, if the reloc is not fully resolved we do not want to use
5547 *valP, and must use fx_offset instead. However, if the reloc
5548 is PC relative, we do want to use *valP since it includes the
5549 result of md_pcrel_from. This is confusing. */
5550 if (fixP->fx_addsy == (symbolS *) NULL)
5551 fixP->fx_done = 1;
5552
5553 else if (fixP->fx_pcrel)
5554 ;
5555
5556 else
5557 value = fixP->fx_offset;
5558 #endif
5559
5560 if (fixP->fx_subsy != (symbolS *) NULL)
5561 {
5562 /* We can't actually support subtracting a symbol. */
5563 as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex"));
5564 }
5565
5566 if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
5567 {
5568 int opindex;
5569 const struct powerpc_operand *operand;
5570 char *where;
5571 unsigned long insn;
5572
5573 opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
5574
5575 operand = &powerpc_operands[opindex];
5576
5577 #ifdef OBJ_XCOFF
5578 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
5579 does not generate a reloc. It uses the offset of `sym' within its
5580 csect. Other usages, such as `.long sym', generate relocs. This
5581 is the documented behaviour of non-TOC symbols. */
5582 if ((operand->flags & PPC_OPERAND_PARENS) != 0
5583 && operand->bits == 16
5584 && operand->shift == 0
5585 && (operand->insert == NULL || ppc_obj64)
5586 && fixP->fx_addsy != NULL
5587 && symbol_get_tc (fixP->fx_addsy)->subseg != 0
5588 && symbol_get_tc (fixP->fx_addsy)->class != XMC_TC
5589 && symbol_get_tc (fixP->fx_addsy)->class != XMC_TC0
5590 && S_GET_SEGMENT (fixP->fx_addsy) != bss_section)
5591 {
5592 value = fixP->fx_offset;
5593 fixP->fx_done = 1;
5594 }
5595 #endif
5596
5597 /* Fetch the instruction, insert the fully resolved operand
5598 value, and stuff the instruction back again. */
5599 where = fixP->fx_frag->fr_literal + fixP->fx_where;
5600 if (target_big_endian)
5601 insn = bfd_getb32 ((unsigned char *) where);
5602 else
5603 insn = bfd_getl32 ((unsigned char *) where);
5604 insn = ppc_insert_operand (insn, operand, (offsetT) value,
5605 fixP->fx_file, fixP->fx_line);
5606 if (target_big_endian)
5607 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
5608 else
5609 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
5610
5611 if (fixP->fx_done)
5612 /* Nothing else to do here. */
5613 return;
5614
5615 assert (fixP->fx_addsy != NULL);
5616
5617 /* Determine a BFD reloc value based on the operand information.
5618 We are only prepared to turn a few of the operands into
5619 relocs. */
5620 if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
5621 && operand->bits == 26
5622 && operand->shift == 0)
5623 fixP->fx_r_type = BFD_RELOC_PPC_B26;
5624 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
5625 && operand->bits == 16
5626 && operand->shift == 0)
5627 {
5628 fixP->fx_r_type = BFD_RELOC_PPC_B16;
5629 #ifdef OBJ_XCOFF
5630 fixP->fx_size = 2;
5631 if (target_big_endian)
5632 fixP->fx_where += 2;
5633 #endif
5634 }
5635 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
5636 && operand->bits == 26
5637 && operand->shift == 0)
5638 fixP->fx_r_type = BFD_RELOC_PPC_BA26;
5639 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
5640 && operand->bits == 16
5641 && operand->shift == 0)
5642 {
5643 fixP->fx_r_type = BFD_RELOC_PPC_BA16;
5644 #ifdef OBJ_XCOFF
5645 fixP->fx_size = 2;
5646 if (target_big_endian)
5647 fixP->fx_where += 2;
5648 #endif
5649 }
5650 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
5651 else if ((operand->flags & PPC_OPERAND_PARENS) != 0
5652 && operand->bits == 16
5653 && operand->shift == 0)
5654 {
5655 if (ppc_is_toc_sym (fixP->fx_addsy))
5656 {
5657 fixP->fx_r_type = BFD_RELOC_PPC_TOC16;
5658 #ifdef OBJ_ELF
5659 if (ppc_obj64
5660 && (operand->flags & PPC_OPERAND_DS) != 0)
5661 fixP->fx_r_type = BFD_RELOC_PPC64_TOC16_DS;
5662 #endif
5663 }
5664 else
5665 {
5666 fixP->fx_r_type = BFD_RELOC_16;
5667 #ifdef OBJ_ELF
5668 if (ppc_obj64
5669 && (operand->flags & PPC_OPERAND_DS) != 0)
5670 fixP->fx_r_type = BFD_RELOC_PPC64_ADDR16_DS;
5671 #endif
5672 }
5673 fixP->fx_size = 2;
5674 if (target_big_endian)
5675 fixP->fx_where += 2;
5676 }
5677 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
5678 else
5679 {
5680 char *sfile;
5681 unsigned int sline;
5682
5683 /* Use expr_symbol_where to see if this is an expression
5684 symbol. */
5685 if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
5686 as_bad_where (fixP->fx_file, fixP->fx_line,
5687 _("unresolved expression that must be resolved"));
5688 else
5689 as_bad_where (fixP->fx_file, fixP->fx_line,
5690 _("unsupported relocation against %s"),
5691 S_GET_NAME (fixP->fx_addsy));
5692 fixP->fx_done = 1;
5693 return;
5694 }
5695 }
5696 else
5697 {
5698 #ifdef OBJ_ELF
5699 ppc_elf_validate_fix (fixP, seg);
5700 #endif
5701 switch (fixP->fx_r_type)
5702 {
5703 case BFD_RELOC_CTOR:
5704 if (ppc_obj64)
5705 goto ctor64;
5706 /* fall through */
5707
5708 case BFD_RELOC_32:
5709 if (fixP->fx_pcrel)
5710 fixP->fx_r_type = BFD_RELOC_32_PCREL;
5711 /* fall through */
5712
5713 case BFD_RELOC_RVA:
5714 case BFD_RELOC_32_PCREL:
5715 case BFD_RELOC_PPC_EMB_NADDR32:
5716 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5717 value, 4);
5718 break;
5719
5720 case BFD_RELOC_64:
5721 ctor64:
5722 if (fixP->fx_pcrel)
5723 fixP->fx_r_type = BFD_RELOC_64_PCREL;
5724 /* fall through */
5725
5726 case BFD_RELOC_64_PCREL:
5727 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5728 value, 8);
5729 break;
5730
5731 case BFD_RELOC_GPREL16:
5732 case BFD_RELOC_16_GOT_PCREL:
5733 case BFD_RELOC_16_GOTOFF:
5734 case BFD_RELOC_LO16_GOTOFF:
5735 case BFD_RELOC_HI16_GOTOFF:
5736 case BFD_RELOC_HI16_S_GOTOFF:
5737 case BFD_RELOC_16_BASEREL:
5738 case BFD_RELOC_LO16_BASEREL:
5739 case BFD_RELOC_HI16_BASEREL:
5740 case BFD_RELOC_HI16_S_BASEREL:
5741 case BFD_RELOC_PPC_EMB_NADDR16:
5742 case BFD_RELOC_PPC_EMB_NADDR16_LO:
5743 case BFD_RELOC_PPC_EMB_NADDR16_HI:
5744 case BFD_RELOC_PPC_EMB_NADDR16_HA:
5745 case BFD_RELOC_PPC_EMB_SDAI16:
5746 case BFD_RELOC_PPC_EMB_SDA2REL:
5747 case BFD_RELOC_PPC_EMB_SDA2I16:
5748 case BFD_RELOC_PPC_EMB_RELSEC16:
5749 case BFD_RELOC_PPC_EMB_RELST_LO:
5750 case BFD_RELOC_PPC_EMB_RELST_HI:
5751 case BFD_RELOC_PPC_EMB_RELST_HA:
5752 case BFD_RELOC_PPC_EMB_RELSDA:
5753 case BFD_RELOC_PPC_TOC16:
5754 #ifdef OBJ_ELF
5755 case BFD_RELOC_PPC64_TOC16_LO:
5756 case BFD_RELOC_PPC64_TOC16_HI:
5757 case BFD_RELOC_PPC64_TOC16_HA:
5758 #endif
5759 if (fixP->fx_pcrel)
5760 {
5761 if (fixP->fx_addsy != NULL)
5762 as_bad_where (fixP->fx_file, fixP->fx_line,
5763 _("cannot emit PC relative %s relocation against %s"),
5764 bfd_get_reloc_code_name (fixP->fx_r_type),
5765 S_GET_NAME (fixP->fx_addsy));
5766 else
5767 as_bad_where (fixP->fx_file, fixP->fx_line,
5768 _("cannot emit PC relative %s relocation"),
5769 bfd_get_reloc_code_name (fixP->fx_r_type));
5770 }
5771
5772 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5773 value, 2);
5774 break;
5775
5776 case BFD_RELOC_16:
5777 if (fixP->fx_pcrel)
5778 fixP->fx_r_type = BFD_RELOC_16_PCREL;
5779 /* fall through */
5780
5781 case BFD_RELOC_16_PCREL:
5782 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5783 value, 2);
5784 break;
5785
5786 case BFD_RELOC_LO16:
5787 if (fixP->fx_pcrel)
5788 fixP->fx_r_type = BFD_RELOC_LO16_PCREL;
5789 /* fall through */
5790
5791 case BFD_RELOC_LO16_PCREL:
5792 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5793 value, 2);
5794 break;
5795
5796 /* This case happens when you write, for example,
5797 lis %r3,(L1-L2)@ha
5798 where L1 and L2 are defined later. */
5799 case BFD_RELOC_HI16:
5800 if (fixP->fx_pcrel)
5801 fixP->fx_r_type = BFD_RELOC_HI16_PCREL;
5802 /* fall through */
5803
5804 case BFD_RELOC_HI16_PCREL:
5805 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5806 PPC_HI (value), 2);
5807 break;
5808
5809 case BFD_RELOC_HI16_S:
5810 if (fixP->fx_pcrel)
5811 fixP->fx_r_type = BFD_RELOC_HI16_S_PCREL;
5812 /* fall through */
5813
5814 case BFD_RELOC_HI16_S_PCREL:
5815 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5816 PPC_HA (value), 2);
5817 break;
5818
5819 #ifdef OBJ_ELF
5820 case BFD_RELOC_PPC64_HIGHER:
5821 if (fixP->fx_pcrel)
5822 abort ();
5823 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5824 PPC_HIGHER (value), 2);
5825 break;
5826
5827 case BFD_RELOC_PPC64_HIGHER_S:
5828 if (fixP->fx_pcrel)
5829 abort ();
5830 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5831 PPC_HIGHERA (value), 2);
5832 break;
5833
5834 case BFD_RELOC_PPC64_HIGHEST:
5835 if (fixP->fx_pcrel)
5836 abort ();
5837 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5838 PPC_HIGHEST (value), 2);
5839 break;
5840
5841 case BFD_RELOC_PPC64_HIGHEST_S:
5842 if (fixP->fx_pcrel)
5843 abort ();
5844 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5845 PPC_HIGHESTA (value), 2);
5846 break;
5847
5848 case BFD_RELOC_PPC64_ADDR16_DS:
5849 case BFD_RELOC_PPC64_ADDR16_LO_DS:
5850 case BFD_RELOC_PPC64_GOT16_DS:
5851 case BFD_RELOC_PPC64_GOT16_LO_DS:
5852 case BFD_RELOC_PPC64_PLT16_LO_DS:
5853 case BFD_RELOC_PPC64_SECTOFF_DS:
5854 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
5855 case BFD_RELOC_PPC64_TOC16_DS:
5856 case BFD_RELOC_PPC64_TOC16_LO_DS:
5857 case BFD_RELOC_PPC64_PLTGOT16_DS:
5858 case BFD_RELOC_PPC64_PLTGOT16_LO_DS:
5859 if (fixP->fx_pcrel)
5860 abort ();
5861 {
5862 char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
5863 unsigned long val, mask;
5864
5865 if (target_big_endian)
5866 val = bfd_getb32 (where - 2);
5867 else
5868 val = bfd_getl32 (where);
5869 mask = 0xfffc;
5870 /* lq insns reserve the four lsbs. */
5871 if ((ppc_cpu & PPC_OPCODE_POWER4) != 0
5872 && (val & (0x3f << 26)) == (56u << 26))
5873 mask = 0xfff0;
5874 val |= value & mask;
5875 if (target_big_endian)
5876 bfd_putb16 ((bfd_vma) val, where);
5877 else
5878 bfd_putl16 ((bfd_vma) val, where);
5879 }
5880 break;
5881
5882 case BFD_RELOC_PPC_B16_BRTAKEN:
5883 case BFD_RELOC_PPC_B16_BRNTAKEN:
5884 case BFD_RELOC_PPC_BA16_BRTAKEN:
5885 case BFD_RELOC_PPC_BA16_BRNTAKEN:
5886 break;
5887
5888 case BFD_RELOC_PPC_TLS:
5889 break;
5890
5891 case BFD_RELOC_PPC_DTPMOD:
5892 case BFD_RELOC_PPC_TPREL16:
5893 case BFD_RELOC_PPC_TPREL16_LO:
5894 case BFD_RELOC_PPC_TPREL16_HI:
5895 case BFD_RELOC_PPC_TPREL16_HA:
5896 case BFD_RELOC_PPC_TPREL:
5897 case BFD_RELOC_PPC_DTPREL16:
5898 case BFD_RELOC_PPC_DTPREL16_LO:
5899 case BFD_RELOC_PPC_DTPREL16_HI:
5900 case BFD_RELOC_PPC_DTPREL16_HA:
5901 case BFD_RELOC_PPC_DTPREL:
5902 case BFD_RELOC_PPC_GOT_TLSGD16:
5903 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
5904 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
5905 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
5906 case BFD_RELOC_PPC_GOT_TLSLD16:
5907 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
5908 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
5909 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
5910 case BFD_RELOC_PPC_GOT_TPREL16:
5911 case BFD_RELOC_PPC_GOT_TPREL16_LO:
5912 case BFD_RELOC_PPC_GOT_TPREL16_HI:
5913 case BFD_RELOC_PPC_GOT_TPREL16_HA:
5914 case BFD_RELOC_PPC_GOT_DTPREL16:
5915 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
5916 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
5917 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
5918 case BFD_RELOC_PPC64_TPREL16_DS:
5919 case BFD_RELOC_PPC64_TPREL16_LO_DS:
5920 case BFD_RELOC_PPC64_TPREL16_HIGHER:
5921 case BFD_RELOC_PPC64_TPREL16_HIGHERA:
5922 case BFD_RELOC_PPC64_TPREL16_HIGHEST:
5923 case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
5924 case BFD_RELOC_PPC64_DTPREL16_DS:
5925 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
5926 case BFD_RELOC_PPC64_DTPREL16_HIGHER:
5927 case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
5928 case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
5929 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
5930 S_SET_THREAD_LOCAL (fixP->fx_addsy);
5931 break;
5932 #endif
5933 /* Because SDA21 modifies the register field, the size is set to 4
5934 bytes, rather than 2, so offset it here appropriately. */
5935 case BFD_RELOC_PPC_EMB_SDA21:
5936 if (fixP->fx_pcrel)
5937 abort ();
5938
5939 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where
5940 + ((target_big_endian) ? 2 : 0),
5941 value, 2);
5942 break;
5943
5944 case BFD_RELOC_8:
5945 if (fixP->fx_pcrel)
5946 {
5947 /* This can occur if there is a bug in the input assembler, eg:
5948 ".byte <undefined_symbol> - ." */
5949 if (fixP->fx_addsy)
5950 as_bad (_("Unable to handle reference to symbol %s"),
5951 S_GET_NAME (fixP->fx_addsy));
5952 else
5953 as_bad (_("Unable to resolve expression"));
5954 fixP->fx_done = 1;
5955 }
5956 else
5957 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5958 value, 1);
5959 break;
5960
5961 case BFD_RELOC_24_PLT_PCREL:
5962 case BFD_RELOC_PPC_LOCAL24PC:
5963 if (!fixP->fx_pcrel && !fixP->fx_done)
5964 abort ();
5965
5966 if (fixP->fx_done)
5967 {
5968 char *where;
5969 unsigned long insn;
5970
5971 /* Fetch the instruction, insert the fully resolved operand
5972 value, and stuff the instruction back again. */
5973 where = fixP->fx_frag->fr_literal + fixP->fx_where;
5974 if (target_big_endian)
5975 insn = bfd_getb32 ((unsigned char *) where);
5976 else
5977 insn = bfd_getl32 ((unsigned char *) where);
5978 if ((value & 3) != 0)
5979 as_bad_where (fixP->fx_file, fixP->fx_line,
5980 _("must branch to an address a multiple of 4"));
5981 if ((offsetT) value < -0x40000000
5982 || (offsetT) value >= 0x40000000)
5983 as_bad_where (fixP->fx_file, fixP->fx_line,
5984 _("@local or @plt branch destination is too far away, %ld bytes"),
5985 (long) value);
5986 insn = insn | (value & 0x03fffffc);
5987 if (target_big_endian)
5988 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
5989 else
5990 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
5991 }
5992 break;
5993
5994 case BFD_RELOC_VTABLE_INHERIT:
5995 fixP->fx_done = 0;
5996 if (fixP->fx_addsy
5997 && !S_IS_DEFINED (fixP->fx_addsy)
5998 && !S_IS_WEAK (fixP->fx_addsy))
5999 S_SET_WEAK (fixP->fx_addsy);
6000 break;
6001
6002 case BFD_RELOC_VTABLE_ENTRY:
6003 fixP->fx_done = 0;
6004 break;
6005
6006 #ifdef OBJ_ELF
6007 /* Generated by reference to `sym@tocbase'. The sym is
6008 ignored by the linker. */
6009 case BFD_RELOC_PPC64_TOC:
6010 fixP->fx_done = 0;
6011 break;
6012 #endif
6013 default:
6014 fprintf (stderr,
6015 _("Gas failure, reloc value %d\n"), fixP->fx_r_type);
6016 fflush (stderr);
6017 abort ();
6018 }
6019 }
6020
6021 #ifdef OBJ_ELF
6022 fixP->fx_addnumber = value;
6023
6024 /* PowerPC uses RELA relocs, ie. the reloc addend is stored separately
6025 from the section contents. If we are going to be emitting a reloc
6026 then the section contents are immaterial, so don't warn if they
6027 happen to overflow. Leave such warnings to ld. */
6028 if (!fixP->fx_done)
6029 fixP->fx_no_overflow = 1;
6030 #else
6031 if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16)
6032 fixP->fx_addnumber = 0;
6033 else
6034 {
6035 #ifdef TE_PE
6036 fixP->fx_addnumber = 0;
6037 #else
6038 /* We want to use the offset within the data segment of the
6039 symbol, not the actual VMA of the symbol. */
6040 fixP->fx_addnumber =
6041 - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixP->fx_addsy));
6042 #endif
6043 }
6044 #endif
6045 }
6046
6047 /* Generate a reloc for a fixup. */
6048
6049 arelent *
tc_gen_reloc(seg,fixp)6050 tc_gen_reloc (seg, fixp)
6051 asection *seg ATTRIBUTE_UNUSED;
6052 fixS *fixp;
6053 {
6054 arelent *reloc;
6055
6056 reloc = (arelent *) xmalloc (sizeof (arelent));
6057
6058 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
6059 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
6060 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
6061 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
6062 if (reloc->howto == (reloc_howto_type *) NULL)
6063 {
6064 as_bad_where (fixp->fx_file, fixp->fx_line,
6065 _("reloc %d not supported by object file format"),
6066 (int) fixp->fx_r_type);
6067 return NULL;
6068 }
6069 reloc->addend = fixp->fx_addnumber;
6070
6071 return reloc;
6072 }
6073
6074 void
ppc_cfi_frame_initial_instructions()6075 ppc_cfi_frame_initial_instructions ()
6076 {
6077 cfi_add_CFA_def_cfa (1, 0);
6078 }
6079
6080 int
tc_ppc_regname_to_dw2regnum(const char * regname)6081 tc_ppc_regname_to_dw2regnum (const char *regname)
6082 {
6083 unsigned int regnum = -1;
6084 unsigned int i;
6085 const char *p;
6086 char *q;
6087 static struct { char *name; int dw2regnum; } regnames[] =
6088 {
6089 { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 },
6090 { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 },
6091 { "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 },
6092 { "spe_acc", 111 }, { "spefscr", 112 }
6093 };
6094
6095 for (i = 0; i < ARRAY_SIZE (regnames); ++i)
6096 if (strcmp (regnames[i].name, regname) == 0)
6097 return regnames[i].dw2regnum;
6098
6099 if (regname[0] == 'r' || regname[0] == 'f' || regname[0] == 'v')
6100 {
6101 p = regname + 1 + (regname[1] == '.');
6102 regnum = strtoul (p, &q, 10);
6103 if (p == q || *q || regnum >= 32)
6104 return -1;
6105 if (regname[0] == 'f')
6106 regnum += 32;
6107 else if (regname[0] == 'v')
6108 regnum += 77;
6109 }
6110 else if (regname[0] == 'c' && regname[1] == 'r')
6111 {
6112 p = regname + 2 + (regname[2] == '.');
6113 if (p[0] < '0' || p[0] > '7' || p[1])
6114 return -1;
6115 regnum = p[0] - '0' + 68;
6116 }
6117 return regnum;
6118 }
6119