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 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
5
6 This file is part of GAS, the GNU Assembler.
7
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
21 02111-1307, USA. */
22
23 #include <stdio.h>
24 #include "as.h"
25 #include "safe-ctype.h"
26 #include "subsegs.h"
27 #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 const char ppc_symbol_chars[] = "+-";
189
190 /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
191 int ppc_cie_data_alignment;
192
193 /* The target specific pseudo-ops which we support. */
194
195 const pseudo_typeS md_pseudo_table[] =
196 {
197 /* Pseudo-ops which must be overridden. */
198 { "byte", ppc_byte, 0 },
199
200 #ifdef OBJ_XCOFF
201 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
202 legitimately belong in the obj-*.c file. However, XCOFF is based
203 on COFF, and is only implemented for the RS/6000. We just use
204 obj-coff.c, and add what we need here. */
205 { "comm", ppc_comm, 0 },
206 { "lcomm", ppc_comm, 1 },
207 { "bb", ppc_bb, 0 },
208 { "bc", ppc_bc, 0 },
209 { "bf", ppc_bf, 0 },
210 { "bi", ppc_biei, 0 },
211 { "bs", ppc_bs, 0 },
212 { "csect", ppc_csect, 0 },
213 { "data", ppc_section, 'd' },
214 { "eb", ppc_eb, 0 },
215 { "ec", ppc_ec, 0 },
216 { "ef", ppc_ef, 0 },
217 { "ei", ppc_biei, 1 },
218 { "es", ppc_es, 0 },
219 { "extern", ppc_extern, 0 },
220 { "function", ppc_function, 0 },
221 { "lglobl", ppc_lglobl, 0 },
222 { "rename", ppc_rename, 0 },
223 { "section", ppc_named_section, 0 },
224 { "stabx", ppc_stabx, 0 },
225 { "text", ppc_section, 't' },
226 { "toc", ppc_toc, 0 },
227 { "long", ppc_xcoff_cons, 2 },
228 { "llong", ppc_xcoff_cons, 3 },
229 { "word", ppc_xcoff_cons, 1 },
230 { "short", ppc_xcoff_cons, 1 },
231 { "vbyte", ppc_vbyte, 0 },
232 #endif
233
234 #ifdef OBJ_ELF
235 { "llong", ppc_elf_cons, 8 },
236 { "quad", ppc_elf_cons, 8 },
237 { "long", ppc_elf_cons, 4 },
238 { "word", ppc_elf_cons, 2 },
239 { "short", ppc_elf_cons, 2 },
240 { "rdata", ppc_elf_rdata, 0 },
241 { "rodata", ppc_elf_rdata, 0 },
242 { "lcomm", ppc_elf_lcomm, 0 },
243 #endif
244
245 #ifdef TE_PE
246 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
247 { "previous", ppc_previous, 0 },
248 { "pdata", ppc_pdata, 0 },
249 { "ydata", ppc_ydata, 0 },
250 { "reldata", ppc_reldata, 0 },
251 { "rdata", ppc_rdata, 0 },
252 { "ualong", ppc_ualong, 0 },
253 { "znop", ppc_znop, 0 },
254 { "comm", ppc_pe_comm, 0 },
255 { "lcomm", ppc_pe_comm, 1 },
256 { "section", ppc_pe_section, 0 },
257 { "function", ppc_pe_function,0 },
258 { "tocd", ppc_pe_tocd, 0 },
259 #endif
260
261 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
262 { "tc", ppc_tc, 0 },
263 { "machine", ppc_machine, 0 },
264 #endif
265
266 { NULL, NULL, 0 }
267 };
268
269
270 /* Predefined register names if -mregnames (or default for Windows NT).
271 In general, there are lots of them, in an attempt to be compatible
272 with a number of other Windows NT assemblers. */
273
274 /* Structure to hold information about predefined registers. */
275 struct pd_reg
276 {
277 char *name;
278 int value;
279 };
280
281 /* List of registers that are pre-defined:
282
283 Each general register has predefined names of the form:
284 1. r<reg_num> which has the value <reg_num>.
285 2. r.<reg_num> which has the value <reg_num>.
286
287 Each floating point register has predefined names of the form:
288 1. f<reg_num> which has the value <reg_num>.
289 2. f.<reg_num> which has the value <reg_num>.
290
291 Each vector unit register has predefined names of the form:
292 1. v<reg_num> which has the value <reg_num>.
293 2. v.<reg_num> which has the value <reg_num>.
294
295 Each condition register has predefined names of the form:
296 1. cr<reg_num> which has the value <reg_num>.
297 2. cr.<reg_num> which has the value <reg_num>.
298
299 There are individual registers as well:
300 sp or r.sp has the value 1
301 rtoc or r.toc has the value 2
302 fpscr has the value 0
303 xer has the value 1
304 lr has the value 8
305 ctr has the value 9
306 pmr has the value 0
307 dar has the value 19
308 dsisr has the value 18
309 dec has the value 22
310 sdr1 has the value 25
311 srr0 has the value 26
312 srr1 has the value 27
313
314 The table is sorted. Suitable for searching by a binary search. */
315
316 static const struct pd_reg pre_defined_registers[] =
317 {
318 { "cr.0", 0 }, /* Condition Registers */
319 { "cr.1", 1 },
320 { "cr.2", 2 },
321 { "cr.3", 3 },
322 { "cr.4", 4 },
323 { "cr.5", 5 },
324 { "cr.6", 6 },
325 { "cr.7", 7 },
326
327 { "cr0", 0 },
328 { "cr1", 1 },
329 { "cr2", 2 },
330 { "cr3", 3 },
331 { "cr4", 4 },
332 { "cr5", 5 },
333 { "cr6", 6 },
334 { "cr7", 7 },
335
336 { "ctr", 9 },
337
338 { "dar", 19 }, /* Data Access Register */
339 { "dec", 22 }, /* Decrementer */
340 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
341
342 { "f.0", 0 }, /* Floating point registers */
343 { "f.1", 1 },
344 { "f.10", 10 },
345 { "f.11", 11 },
346 { "f.12", 12 },
347 { "f.13", 13 },
348 { "f.14", 14 },
349 { "f.15", 15 },
350 { "f.16", 16 },
351 { "f.17", 17 },
352 { "f.18", 18 },
353 { "f.19", 19 },
354 { "f.2", 2 },
355 { "f.20", 20 },
356 { "f.21", 21 },
357 { "f.22", 22 },
358 { "f.23", 23 },
359 { "f.24", 24 },
360 { "f.25", 25 },
361 { "f.26", 26 },
362 { "f.27", 27 },
363 { "f.28", 28 },
364 { "f.29", 29 },
365 { "f.3", 3 },
366 { "f.30", 30 },
367 { "f.31", 31 },
368 { "f.4", 4 },
369 { "f.5", 5 },
370 { "f.6", 6 },
371 { "f.7", 7 },
372 { "f.8", 8 },
373 { "f.9", 9 },
374
375 { "f0", 0 },
376 { "f1", 1 },
377 { "f10", 10 },
378 { "f11", 11 },
379 { "f12", 12 },
380 { "f13", 13 },
381 { "f14", 14 },
382 { "f15", 15 },
383 { "f16", 16 },
384 { "f17", 17 },
385 { "f18", 18 },
386 { "f19", 19 },
387 { "f2", 2 },
388 { "f20", 20 },
389 { "f21", 21 },
390 { "f22", 22 },
391 { "f23", 23 },
392 { "f24", 24 },
393 { "f25", 25 },
394 { "f26", 26 },
395 { "f27", 27 },
396 { "f28", 28 },
397 { "f29", 29 },
398 { "f3", 3 },
399 { "f30", 30 },
400 { "f31", 31 },
401 { "f4", 4 },
402 { "f5", 5 },
403 { "f6", 6 },
404 { "f7", 7 },
405 { "f8", 8 },
406 { "f9", 9 },
407
408 { "fpscr", 0 },
409
410 { "lr", 8 }, /* Link Register */
411
412 { "pmr", 0 },
413
414 { "r.0", 0 }, /* General Purpose Registers */
415 { "r.1", 1 },
416 { "r.10", 10 },
417 { "r.11", 11 },
418 { "r.12", 12 },
419 { "r.13", 13 },
420 { "r.14", 14 },
421 { "r.15", 15 },
422 { "r.16", 16 },
423 { "r.17", 17 },
424 { "r.18", 18 },
425 { "r.19", 19 },
426 { "r.2", 2 },
427 { "r.20", 20 },
428 { "r.21", 21 },
429 { "r.22", 22 },
430 { "r.23", 23 },
431 { "r.24", 24 },
432 { "r.25", 25 },
433 { "r.26", 26 },
434 { "r.27", 27 },
435 { "r.28", 28 },
436 { "r.29", 29 },
437 { "r.3", 3 },
438 { "r.30", 30 },
439 { "r.31", 31 },
440 { "r.4", 4 },
441 { "r.5", 5 },
442 { "r.6", 6 },
443 { "r.7", 7 },
444 { "r.8", 8 },
445 { "r.9", 9 },
446
447 { "r.sp", 1 }, /* Stack Pointer */
448
449 { "r.toc", 2 }, /* Pointer to the table of contents */
450
451 { "r0", 0 }, /* More general purpose registers */
452 { "r1", 1 },
453 { "r10", 10 },
454 { "r11", 11 },
455 { "r12", 12 },
456 { "r13", 13 },
457 { "r14", 14 },
458 { "r15", 15 },
459 { "r16", 16 },
460 { "r17", 17 },
461 { "r18", 18 },
462 { "r19", 19 },
463 { "r2", 2 },
464 { "r20", 20 },
465 { "r21", 21 },
466 { "r22", 22 },
467 { "r23", 23 },
468 { "r24", 24 },
469 { "r25", 25 },
470 { "r26", 26 },
471 { "r27", 27 },
472 { "r28", 28 },
473 { "r29", 29 },
474 { "r3", 3 },
475 { "r30", 30 },
476 { "r31", 31 },
477 { "r4", 4 },
478 { "r5", 5 },
479 { "r6", 6 },
480 { "r7", 7 },
481 { "r8", 8 },
482 { "r9", 9 },
483
484 { "rtoc", 2 }, /* Table of contents */
485
486 { "sdr1", 25 }, /* Storage Description Register 1 */
487
488 { "sp", 1 },
489
490 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
491 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
492
493 { "v.0", 0 }, /* Vector registers */
494 { "v.1", 1 },
495 { "v.10", 10 },
496 { "v.11", 11 },
497 { "v.12", 12 },
498 { "v.13", 13 },
499 { "v.14", 14 },
500 { "v.15", 15 },
501 { "v.16", 16 },
502 { "v.17", 17 },
503 { "v.18", 18 },
504 { "v.19", 19 },
505 { "v.2", 2 },
506 { "v.20", 20 },
507 { "v.21", 21 },
508 { "v.22", 22 },
509 { "v.23", 23 },
510 { "v.24", 24 },
511 { "v.25", 25 },
512 { "v.26", 26 },
513 { "v.27", 27 },
514 { "v.28", 28 },
515 { "v.29", 29 },
516 { "v.3", 3 },
517 { "v.30", 30 },
518 { "v.31", 31 },
519 { "v.4", 4 },
520 { "v.5", 5 },
521 { "v.6", 6 },
522 { "v.7", 7 },
523 { "v.8", 8 },
524 { "v.9", 9 },
525
526 { "v0", 0 },
527 { "v1", 1 },
528 { "v10", 10 },
529 { "v11", 11 },
530 { "v12", 12 },
531 { "v13", 13 },
532 { "v14", 14 },
533 { "v15", 15 },
534 { "v16", 16 },
535 { "v17", 17 },
536 { "v18", 18 },
537 { "v19", 19 },
538 { "v2", 2 },
539 { "v20", 20 },
540 { "v21", 21 },
541 { "v22", 22 },
542 { "v23", 23 },
543 { "v24", 24 },
544 { "v25", 25 },
545 { "v26", 26 },
546 { "v27", 27 },
547 { "v28", 28 },
548 { "v29", 29 },
549 { "v3", 3 },
550 { "v30", 30 },
551 { "v31", 31 },
552 { "v4", 4 },
553 { "v5", 5 },
554 { "v6", 6 },
555 { "v7", 7 },
556 { "v8", 8 },
557 { "v9", 9 },
558
559 { "xer", 1 },
560
561 };
562
563 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
564
565 /* Given NAME, find the register number associated with that name, return
566 the integer value associated with the given name or -1 on failure. */
567
568 static int reg_name_search
569 PARAMS ((const struct pd_reg *, int, const char * name));
570
571 static int
reg_name_search(regs,regcount,name)572 reg_name_search (regs, regcount, name)
573 const struct pd_reg *regs;
574 int regcount;
575 const char *name;
576 {
577 int middle, low, high;
578 int cmp;
579
580 low = 0;
581 high = regcount - 1;
582
583 do
584 {
585 middle = (low + high) / 2;
586 cmp = strcasecmp (name, regs[middle].name);
587 if (cmp < 0)
588 high = middle - 1;
589 else if (cmp > 0)
590 low = middle + 1;
591 else
592 return regs[middle].value;
593 }
594 while (low <= high);
595
596 return -1;
597 }
598
599 /*
600 * Summary of register_name.
601 *
602 * in: Input_line_pointer points to 1st char of operand.
603 *
604 * out: A expressionS.
605 * The operand may have been a register: in this case, X_op == O_register,
606 * X_add_number is set to the register number, and truth is returned.
607 * Input_line_pointer->(next non-blank) char after operand, or is in its
608 * original state.
609 */
610
611 static bfd_boolean
register_name(expressionP)612 register_name (expressionP)
613 expressionS *expressionP;
614 {
615 int reg_number;
616 char *name;
617 char *start;
618 char c;
619
620 /* Find the spelling of the operand. */
621 start = name = input_line_pointer;
622 if (name[0] == '%' && ISALPHA (name[1]))
623 name = ++input_line_pointer;
624
625 else if (!reg_names_p || !ISALPHA (name[0]))
626 return FALSE;
627
628 c = get_symbol_end ();
629 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
630
631 /* Put back the delimiting char. */
632 *input_line_pointer = c;
633
634 /* Look to see if it's in the register table. */
635 if (reg_number >= 0)
636 {
637 expressionP->X_op = O_register;
638 expressionP->X_add_number = reg_number;
639
640 /* Make the rest nice. */
641 expressionP->X_add_symbol = NULL;
642 expressionP->X_op_symbol = NULL;
643 return TRUE;
644 }
645
646 /* Reset the line as if we had not done anything. */
647 input_line_pointer = start;
648 return FALSE;
649 }
650
651 /* This function is called for each symbol seen in an expression. It
652 handles the special parsing which PowerPC assemblers are supposed
653 to use for condition codes. */
654
655 /* Whether to do the special parsing. */
656 static bfd_boolean cr_operand;
657
658 /* Names to recognize in a condition code. This table is sorted. */
659 static const struct pd_reg cr_names[] =
660 {
661 { "cr0", 0 },
662 { "cr1", 1 },
663 { "cr2", 2 },
664 { "cr3", 3 },
665 { "cr4", 4 },
666 { "cr5", 5 },
667 { "cr6", 6 },
668 { "cr7", 7 },
669 { "eq", 2 },
670 { "gt", 1 },
671 { "lt", 0 },
672 { "so", 3 },
673 { "un", 3 }
674 };
675
676 /* Parsing function. This returns non-zero if it recognized an
677 expression. */
678
679 int
ppc_parse_name(name,expr)680 ppc_parse_name (name, expr)
681 const char *name;
682 expressionS *expr;
683 {
684 int val;
685
686 if (! cr_operand)
687 return 0;
688
689 val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0],
690 name);
691 if (val < 0)
692 return 0;
693
694 expr->X_op = O_constant;
695 expr->X_add_number = val;
696
697 return 1;
698 }
699
700 /* Local variables. */
701
702 /* The type of processor we are assembling for. This is one or more
703 of the PPC_OPCODE flags defined in opcode/ppc.h. */
704 static unsigned long ppc_cpu = 0;
705
706 /* Whether to target xcoff64/elf64. */
707 static unsigned int ppc_obj64 = BFD_DEFAULT_TARGET_SIZE == 64;
708
709 /* Opcode hash table. */
710 static struct hash_control *ppc_hash;
711
712 /* Macro hash table. */
713 static struct hash_control *ppc_macro_hash;
714
715 #ifdef OBJ_ELF
716 /* What type of shared library support to use. */
717 static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE;
718
719 /* Flags to set in the elf header. */
720 static flagword ppc_flags = 0;
721
722 /* Whether this is Solaris or not. */
723 #ifdef TARGET_SOLARIS_COMMENT
724 #define SOLARIS_P TRUE
725 #else
726 #define SOLARIS_P FALSE
727 #endif
728
729 static bfd_boolean msolaris = SOLARIS_P;
730 #endif
731
732 #ifdef OBJ_XCOFF
733
734 /* The RS/6000 assembler uses the .csect pseudo-op to generate code
735 using a bunch of different sections. These assembler sections,
736 however, are all encompassed within the .text or .data sections of
737 the final output file. We handle this by using different
738 subsegments within these main segments. */
739
740 /* Next subsegment to allocate within the .text segment. */
741 static subsegT ppc_text_subsegment = 2;
742
743 /* Linked list of csects in the text section. */
744 static symbolS *ppc_text_csects;
745
746 /* Next subsegment to allocate within the .data segment. */
747 static subsegT ppc_data_subsegment = 2;
748
749 /* Linked list of csects in the data section. */
750 static symbolS *ppc_data_csects;
751
752 /* The current csect. */
753 static symbolS *ppc_current_csect;
754
755 /* The RS/6000 assembler uses a TOC which holds addresses of functions
756 and variables. Symbols are put in the TOC with the .tc pseudo-op.
757 A special relocation is used when accessing TOC entries. We handle
758 the TOC as a subsegment within the .data segment. We set it up if
759 we see a .toc pseudo-op, and save the csect symbol here. */
760 static symbolS *ppc_toc_csect;
761
762 /* The first frag in the TOC subsegment. */
763 static fragS *ppc_toc_frag;
764
765 /* The first frag in the first subsegment after the TOC in the .data
766 segment. NULL if there are no subsegments after the TOC. */
767 static fragS *ppc_after_toc_frag;
768
769 /* The current static block. */
770 static symbolS *ppc_current_block;
771
772 /* The COFF debugging section; set by md_begin. This is not the
773 .debug section, but is instead the secret BFD section which will
774 cause BFD to set the section number of a symbol to N_DEBUG. */
775 static asection *ppc_coff_debug_section;
776
777 #endif /* OBJ_XCOFF */
778
779 #ifdef TE_PE
780
781 /* Various sections that we need for PE coff support. */
782 static segT ydata_section;
783 static segT pdata_section;
784 static segT reldata_section;
785 static segT rdata_section;
786 static segT tocdata_section;
787
788 /* The current section and the previous section. See ppc_previous. */
789 static segT ppc_previous_section;
790 static segT ppc_current_section;
791
792 #endif /* TE_PE */
793
794 #ifdef OBJ_ELF
795 symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
796 #define PPC_APUINFO_ISEL 0x40
797 #define PPC_APUINFO_PMR 0x41
798 #define PPC_APUINFO_RFMCI 0x42
799 #define PPC_APUINFO_CACHELCK 0x43
800 #define PPC_APUINFO_SPE 0x100
801 #define PPC_APUINFO_EFS 0x101
802 #define PPC_APUINFO_BRLOCK 0x102
803
804 /*
805 * We keep a list of APUinfo
806 */
807 unsigned long *ppc_apuinfo_list;
808 unsigned int ppc_apuinfo_num;
809 unsigned int ppc_apuinfo_num_alloc;
810 #endif /* OBJ_ELF */
811
812 #ifdef OBJ_ELF
813 const char *const md_shortopts = "b:l:usm:K:VQ:";
814 #else
815 const char *const md_shortopts = "um:";
816 #endif
817 const struct option md_longopts[] = {
818 {NULL, no_argument, NULL, 0}
819 };
820 const size_t md_longopts_size = sizeof (md_longopts);
821
822
823 /* Handle -m options that set cpu type, and .machine arg. */
824
825 static int
parse_cpu(const char * arg)826 parse_cpu (const char *arg)
827 {
828 /* -mpwrx and -mpwr2 mean to assemble for the IBM POWER/2
829 (RIOS2). */
830 if (strcmp (arg, "pwrx") == 0 || strcmp (arg, "pwr2") == 0)
831 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_POWER2 | PPC_OPCODE_32;
832 /* -mpwr means to assemble for the IBM POWER (RIOS1). */
833 else if (strcmp (arg, "pwr") == 0)
834 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_32;
835 /* -m601 means to assemble for the PowerPC 601, which includes
836 instructions that are holdovers from the Power. */
837 else if (strcmp (arg, "601") == 0)
838 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
839 | PPC_OPCODE_601 | PPC_OPCODE_32);
840 /* -mppc, -mppc32, -m603, and -m604 mean to assemble for the
841 PowerPC 603/604. */
842 else if (strcmp (arg, "ppc") == 0
843 || strcmp (arg, "ppc32") == 0
844 || strcmp (arg, "603") == 0
845 || strcmp (arg, "604") == 0)
846 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32;
847 /* -m403 and -m405 mean to assemble for the PowerPC 403/405. */
848 else if (strcmp (arg, "403") == 0
849 || strcmp (arg, "405") == 0)
850 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
851 | PPC_OPCODE_403 | PPC_OPCODE_32);
852 else if (strcmp (arg, "440") == 0)
853 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32
854 | PPC_OPCODE_440 | PPC_OPCODE_ISEL | PPC_OPCODE_RFMCI);
855 else if (strcmp (arg, "7400") == 0
856 || strcmp (arg, "7410") == 0
857 || strcmp (arg, "7450") == 0
858 || strcmp (arg, "7455") == 0)
859 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
860 | PPC_OPCODE_ALTIVEC | PPC_OPCODE_32);
861 else if (strcmp (arg, "altivec") == 0)
862 {
863 if (ppc_cpu == 0)
864 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ALTIVEC;
865 else
866 ppc_cpu |= PPC_OPCODE_ALTIVEC;
867 }
868 else if (strcmp (arg, "e500") == 0 || strcmp (arg, "e500x2") == 0)
869 {
870 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_SPE
871 | PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
872 | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK
873 | PPC_OPCODE_RFMCI);
874 }
875 else if (strcmp (arg, "spe") == 0)
876 {
877 if (ppc_cpu == 0)
878 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_SPE | PPC_OPCODE_EFS;
879 else
880 ppc_cpu |= PPC_OPCODE_SPE;
881 }
882 /* -mppc64 and -m620 mean to assemble for the 64-bit PowerPC
883 620. */
884 else if (strcmp (arg, "ppc64") == 0 || strcmp (arg, "620") == 0)
885 {
886 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64;
887 }
888 else if (strcmp (arg, "ppc64bridge") == 0)
889 {
890 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
891 | PPC_OPCODE_64_BRIDGE | PPC_OPCODE_64);
892 }
893 /* -mbooke/-mbooke32 mean enable 32-bit BookE support. */
894 else if (strcmp (arg, "booke") == 0 || strcmp (arg, "booke32") == 0)
895 {
896 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32;
897 }
898 /* -mbooke64 means enable 64-bit BookE support. */
899 else if (strcmp (arg, "booke64") == 0)
900 {
901 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE
902 | PPC_OPCODE_BOOKE64 | PPC_OPCODE_64);
903 }
904 else if (strcmp (arg, "power4") == 0)
905 {
906 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
907 | PPC_OPCODE_64 | PPC_OPCODE_POWER4);
908 }
909 /* -mcom means assemble for the common intersection between Power
910 and PowerPC. At present, we just allow the union, rather
911 than the intersection. */
912 else if (strcmp (arg, "com") == 0)
913 ppc_cpu = PPC_OPCODE_COMMON | PPC_OPCODE_32;
914 /* -many means to assemble for any architecture (PWR/PWRX/PPC). */
915 else if (strcmp (arg, "any") == 0)
916 ppc_cpu |= PPC_OPCODE_ANY;
917 else
918 return 0;
919
920 return 1;
921 }
922
923 int
md_parse_option(c,arg)924 md_parse_option (c, arg)
925 int c;
926 char *arg;
927 {
928 switch (c)
929 {
930 case 'u':
931 /* -u means that any undefined symbols should be treated as
932 external, which is the default for gas anyhow. */
933 break;
934
935 #ifdef OBJ_ELF
936 case 'l':
937 /* Solaris as takes -le (presumably for little endian). For completeness
938 sake, recognize -be also. */
939 if (strcmp (arg, "e") == 0)
940 {
941 target_big_endian = 0;
942 set_target_endian = 1;
943 }
944 else
945 return 0;
946
947 break;
948
949 case 'b':
950 if (strcmp (arg, "e") == 0)
951 {
952 target_big_endian = 1;
953 set_target_endian = 1;
954 }
955 else
956 return 0;
957
958 break;
959
960 case 'K':
961 /* Recognize -K PIC. */
962 if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
963 {
964 shlib = SHLIB_PIC;
965 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
966 }
967 else
968 return 0;
969
970 break;
971 #endif
972
973 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
974 case 'a':
975 if (strcmp (arg, "64") == 0)
976 {
977 #ifdef BFD64
978 ppc_obj64 = 1;
979 #else
980 as_fatal (_("%s unsupported"), "-a64");
981 #endif
982 }
983 else if (strcmp (arg, "32") == 0)
984 ppc_obj64 = 0;
985 else
986 return 0;
987 break;
988
989 case 'm':
990 if (parse_cpu (arg))
991 ;
992
993 else if (strcmp (arg, "regnames") == 0)
994 reg_names_p = TRUE;
995
996 else if (strcmp (arg, "no-regnames") == 0)
997 reg_names_p = FALSE;
998
999 #ifdef OBJ_ELF
1000 /* -mrelocatable/-mrelocatable-lib -- warn about initializations
1001 that require relocation. */
1002 else if (strcmp (arg, "relocatable") == 0)
1003 {
1004 shlib = SHLIB_MRELOCATABLE;
1005 ppc_flags |= EF_PPC_RELOCATABLE;
1006 }
1007
1008 else if (strcmp (arg, "relocatable-lib") == 0)
1009 {
1010 shlib = SHLIB_MRELOCATABLE;
1011 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
1012 }
1013
1014 /* -memb, set embedded bit. */
1015 else if (strcmp (arg, "emb") == 0)
1016 ppc_flags |= EF_PPC_EMB;
1017
1018 /* -mlittle/-mbig set the endianess. */
1019 else if (strcmp (arg, "little") == 0
1020 || strcmp (arg, "little-endian") == 0)
1021 {
1022 target_big_endian = 0;
1023 set_target_endian = 1;
1024 }
1025
1026 else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
1027 {
1028 target_big_endian = 1;
1029 set_target_endian = 1;
1030 }
1031
1032 else if (strcmp (arg, "solaris") == 0)
1033 {
1034 msolaris = TRUE;
1035 ppc_comment_chars = ppc_solaris_comment_chars;
1036 }
1037
1038 else if (strcmp (arg, "no-solaris") == 0)
1039 {
1040 msolaris = FALSE;
1041 ppc_comment_chars = ppc_eabi_comment_chars;
1042 }
1043 #endif
1044 else
1045 {
1046 as_bad (_("invalid switch -m%s"), arg);
1047 return 0;
1048 }
1049 break;
1050
1051 #ifdef OBJ_ELF
1052 /* -V: SVR4 argument to print version ID. */
1053 case 'V':
1054 print_version_id ();
1055 break;
1056
1057 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
1058 should be emitted or not. FIXME: Not implemented. */
1059 case 'Q':
1060 break;
1061
1062 /* Solaris takes -s to specify that .stabs go in a .stabs section,
1063 rather than .stabs.excl, which is ignored by the linker.
1064 FIXME: Not implemented. */
1065 case 's':
1066 if (arg)
1067 return 0;
1068
1069 break;
1070 #endif
1071
1072 default:
1073 return 0;
1074 }
1075
1076 return 1;
1077 }
1078
1079 void
md_show_usage(stream)1080 md_show_usage (stream)
1081 FILE *stream;
1082 {
1083 fprintf (stream, _("\
1084 PowerPC options:\n\
1085 -a32 generate ELF32/XCOFF32\n\
1086 -a64 generate ELF64/XCOFF64\n\
1087 -u ignored\n\
1088 -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\
1089 -mpwr generate code for POWER (RIOS1)\n\
1090 -m601 generate code for PowerPC 601\n\
1091 -mppc, -mppc32, -m603, -m604\n\
1092 generate code for PowerPC 603/604\n\
1093 -m403, -m405 generate code for PowerPC 403/405\n\
1094 -m440 generate code for PowerPC 440\n\
1095 -m7400, -m7410, -m7450, -m7455\n\
1096 generate code For PowerPC 7400/7410/7450/7455\n"));
1097 fprintf (stream, _("\
1098 -mppc64, -m620 generate code for PowerPC 620/625/630\n\
1099 -mppc64bridge generate code for PowerPC 64, including bridge insns\n\
1100 -mbooke64 generate code for 64-bit PowerPC BookE\n\
1101 -mbooke, mbooke32 generate code for 32-bit PowerPC BookE\n\
1102 -mpower4 generate code for Power4 architecture\n\
1103 -mcom generate code Power/PowerPC common instructions\n\
1104 -many generate code for any architecture (PWR/PWRX/PPC)\n"));
1105 fprintf (stream, _("\
1106 -maltivec generate code for AltiVec\n\
1107 -me500, -me500x2 generate code for Motorola e500 core complex\n\
1108 -mspe generate code for Motorola SPE instructions\n\
1109 -mregnames Allow symbolic names for registers\n\
1110 -mno-regnames Do not allow symbolic names for registers\n"));
1111 #ifdef OBJ_ELF
1112 fprintf (stream, _("\
1113 -mrelocatable support for GCC's -mrelocatble option\n\
1114 -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
1115 -memb set PPC_EMB bit in ELF flags\n\
1116 -mlittle, -mlittle-endian, -l, -le\n\
1117 generate code for a little endian machine\n\
1118 -mbig, -mbig-endian, -b, -be\n\
1119 generate code for a big endian machine\n\
1120 -msolaris generate code for Solaris\n\
1121 -mno-solaris do not generate code for Solaris\n\
1122 -V print assembler version number\n\
1123 -Qy, -Qn ignored\n"));
1124 #endif
1125 }
1126
1127 /* Set ppc_cpu if it is not already set. */
1128
1129 static void
ppc_set_cpu()1130 ppc_set_cpu ()
1131 {
1132 const char *default_os = TARGET_OS;
1133 const char *default_cpu = TARGET_CPU;
1134
1135 if ((ppc_cpu & ~PPC_OPCODE_ANY) == 0)
1136 {
1137 if (ppc_obj64)
1138 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64;
1139 else if (strncmp (default_os, "aix", 3) == 0
1140 && default_os[3] >= '4' && default_os[3] <= '9')
1141 ppc_cpu |= PPC_OPCODE_COMMON | PPC_OPCODE_32;
1142 else if (strncmp (default_os, "aix3", 4) == 0)
1143 ppc_cpu |= PPC_OPCODE_POWER | PPC_OPCODE_32;
1144 else if (strcmp (default_cpu, "rs6000") == 0)
1145 ppc_cpu |= PPC_OPCODE_POWER | PPC_OPCODE_32;
1146 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1147 {
1148 if (default_cpu[7] == '6' && default_cpu[8] == '4')
1149 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64;
1150 else
1151 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32;
1152 }
1153 else
1154 as_fatal (_("Unknown default cpu = %s, os = %s"),
1155 default_cpu, default_os);
1156 }
1157 }
1158
1159 /* Figure out the BFD architecture to use. */
1160
1161 enum bfd_architecture
ppc_arch()1162 ppc_arch ()
1163 {
1164 const char *default_cpu = TARGET_CPU;
1165 ppc_set_cpu ();
1166
1167 if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
1168 return bfd_arch_powerpc;
1169 else if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
1170 return bfd_arch_rs6000;
1171 else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
1172 {
1173 if (strcmp (default_cpu, "rs6000") == 0)
1174 return bfd_arch_rs6000;
1175 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1176 return bfd_arch_powerpc;
1177 }
1178
1179 as_fatal (_("Neither Power nor PowerPC opcodes were selected."));
1180 return bfd_arch_unknown;
1181 }
1182
1183 unsigned long
ppc_mach()1184 ppc_mach ()
1185 {
1186 if (ppc_obj64)
1187 return bfd_mach_ppc64;
1188 else if (ppc_arch () == bfd_arch_rs6000)
1189 return bfd_mach_rs6k;
1190 else
1191 return bfd_mach_ppc;
1192 }
1193
1194 extern char*
ppc_target_format()1195 ppc_target_format ()
1196 {
1197 #ifdef OBJ_COFF
1198 #ifdef TE_PE
1199 return target_big_endian ? "pe-powerpc" : "pe-powerpcle";
1200 #elif TE_POWERMAC
1201 return "xcoff-powermac";
1202 #else
1203 # ifdef TE_AIX5
1204 return (ppc_obj64 ? "aix5coff64-rs6000" : "aixcoff-rs6000");
1205 # else
1206 return (ppc_obj64 ? "aixcoff64-rs6000" : "aixcoff-rs6000");
1207 # endif
1208 #endif
1209 #endif
1210 #ifdef OBJ_ELF
1211 return (target_big_endian
1212 ? (ppc_obj64 ? "elf64-powerpc" : "elf32-powerpc")
1213 : (ppc_obj64 ? "elf64-powerpcle" : "elf32-powerpcle"));
1214 #endif
1215 }
1216
1217 /* Insert opcodes and macros into hash tables. Called at startup and
1218 for .cpu pseudo. */
1219
1220 static void
ppc_setup_opcodes(void)1221 ppc_setup_opcodes (void)
1222 {
1223 register const struct powerpc_opcode *op;
1224 const struct powerpc_opcode *op_end;
1225 const struct powerpc_macro *macro;
1226 const struct powerpc_macro *macro_end;
1227 bfd_boolean dup_insn = FALSE;
1228
1229 if (ppc_hash != NULL)
1230 hash_die (ppc_hash);
1231 if (ppc_macro_hash != NULL)
1232 hash_die (ppc_macro_hash);
1233
1234 /* Insert the opcodes into a hash table. */
1235 ppc_hash = hash_new ();
1236
1237 op_end = powerpc_opcodes + powerpc_num_opcodes;
1238 for (op = powerpc_opcodes; op < op_end; op++)
1239 {
1240 know ((op->opcode & op->mask) == op->opcode);
1241
1242 if ((op->flags & ppc_cpu & ~(PPC_OPCODE_32 | PPC_OPCODE_64)) != 0
1243 && ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0
1244 || ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64))
1245 == (ppc_cpu & (PPC_OPCODE_32 | PPC_OPCODE_64)))
1246 || (ppc_cpu & PPC_OPCODE_64_BRIDGE) != 0)
1247 /* Certain instructions (eg: extsw) do not exist in the
1248 32-bit BookE instruction set, but they do exist in the
1249 64-bit BookE instruction set, and other PPC instruction
1250 sets. Check to see if the opcode has the BOOKE64 flag set.
1251 If it does make sure that the target CPU is not the BookE32. */
1252 && ((op->flags & PPC_OPCODE_BOOKE64) == 0
1253 || (ppc_cpu & PPC_OPCODE_BOOKE64) == PPC_OPCODE_BOOKE64
1254 || (ppc_cpu & PPC_OPCODE_BOOKE) == 0)
1255 && ((op->flags & (PPC_OPCODE_POWER4 | PPC_OPCODE_NOPOWER4)) == 0
1256 || ((op->flags & PPC_OPCODE_POWER4)
1257 == (ppc_cpu & PPC_OPCODE_POWER4))))
1258 {
1259 const char *retval;
1260
1261 retval = hash_insert (ppc_hash, op->name, (PTR) op);
1262 if (retval != NULL)
1263 {
1264 /* Ignore Power duplicates for -m601. */
1265 if ((ppc_cpu & PPC_OPCODE_601) != 0
1266 && (op->flags & PPC_OPCODE_POWER) != 0)
1267 continue;
1268
1269 as_bad (_("Internal assembler error for instruction %s"),
1270 op->name);
1271 dup_insn = TRUE;
1272 }
1273 }
1274 }
1275
1276 if ((ppc_cpu & PPC_OPCODE_ANY) != 0)
1277 for (op = powerpc_opcodes; op < op_end; op++)
1278 hash_insert (ppc_hash, op->name, (PTR) op);
1279
1280 /* Insert the macros into a hash table. */
1281 ppc_macro_hash = hash_new ();
1282
1283 macro_end = powerpc_macros + powerpc_num_macros;
1284 for (macro = powerpc_macros; macro < macro_end; macro++)
1285 {
1286 if ((macro->flags & ppc_cpu) != 0)
1287 {
1288 const char *retval;
1289
1290 retval = hash_insert (ppc_macro_hash, macro->name, (PTR) macro);
1291 if (retval != (const char *) NULL)
1292 {
1293 as_bad (_("Internal assembler error for macro %s"), macro->name);
1294 dup_insn = TRUE;
1295 }
1296 }
1297 }
1298
1299 if (dup_insn)
1300 abort ();
1301 }
1302
1303 /* This function is called when the assembler starts up. It is called
1304 after the options have been parsed and the output file has been
1305 opened. */
1306
1307 void
md_begin()1308 md_begin ()
1309 {
1310 ppc_set_cpu ();
1311
1312 ppc_cie_data_alignment = ppc_obj64 ? -8 : -4;
1313
1314 #ifdef OBJ_ELF
1315 /* Set the ELF flags if desired. */
1316 if (ppc_flags && !msolaris)
1317 bfd_set_private_flags (stdoutput, ppc_flags);
1318 #endif
1319
1320 ppc_setup_opcodes ();
1321
1322 /* Tell the main code what the endianness is if it is not overridden
1323 by the user. */
1324 if (!set_target_endian)
1325 {
1326 set_target_endian = 1;
1327 target_big_endian = PPC_BIG_ENDIAN;
1328 }
1329
1330 #ifdef OBJ_XCOFF
1331 ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
1332
1333 /* Create dummy symbols to serve as initial csects. This forces the
1334 text csects to precede the data csects. These symbols will not
1335 be output. */
1336 ppc_text_csects = symbol_make ("dummy\001");
1337 symbol_get_tc (ppc_text_csects)->within = ppc_text_csects;
1338 ppc_data_csects = symbol_make ("dummy\001");
1339 symbol_get_tc (ppc_data_csects)->within = ppc_data_csects;
1340 #endif
1341
1342 #ifdef TE_PE
1343
1344 ppc_current_section = text_section;
1345 ppc_previous_section = 0;
1346
1347 #endif
1348 }
1349
1350 void
ppc_cleanup()1351 ppc_cleanup ()
1352 {
1353 #ifdef OBJ_ELF
1354 if (ppc_apuinfo_list == NULL)
1355 return;
1356
1357 /* Ok, so write the section info out. We have this layout:
1358
1359 byte data what
1360 ---- ---- ----
1361 0 8 length of "APUinfo\0"
1362 4 (n*4) number of APU's (4 bytes each)
1363 8 2 note type 2
1364 12 "APUinfo\0" name
1365 20 APU#1 first APU's info
1366 24 APU#2 second APU's info
1367 ... ...
1368 */
1369 {
1370 char *p;
1371 asection *seg = now_seg;
1372 subsegT subseg = now_subseg;
1373 asection *apuinfo_secp = (asection *) NULL;
1374 unsigned int i;
1375
1376 /* Create the .PPC.EMB.apuinfo section. */
1377 apuinfo_secp = subseg_new (".PPC.EMB.apuinfo", 0);
1378 bfd_set_section_flags (stdoutput,
1379 apuinfo_secp,
1380 SEC_HAS_CONTENTS | SEC_READONLY);
1381
1382 p = frag_more (4);
1383 md_number_to_chars (p, (valueT) 8, 4);
1384
1385 p = frag_more (4);
1386 md_number_to_chars (p, (valueT) ppc_apuinfo_num * 4, 4);
1387
1388 p = frag_more (4);
1389 md_number_to_chars (p, (valueT) 2, 4);
1390
1391 p = frag_more (8);
1392 strcpy (p, "APUinfo");
1393
1394 for (i = 0; i < ppc_apuinfo_num; i++)
1395 {
1396 p = frag_more (4);
1397 md_number_to_chars (p, (valueT) ppc_apuinfo_list[i], 4);
1398 }
1399
1400 frag_align (2, 0, 0);
1401
1402 /* We probably can't restore the current segment, for there likely
1403 isn't one yet... */
1404 if (seg && subseg)
1405 subseg_set (seg, subseg);
1406 }
1407 #endif
1408 }
1409
1410 /* Insert an operand value into an instruction. */
1411
1412 static unsigned long
ppc_insert_operand(insn,operand,val,file,line)1413 ppc_insert_operand (insn, operand, val, file, line)
1414 unsigned long insn;
1415 const struct powerpc_operand *operand;
1416 offsetT val;
1417 char *file;
1418 unsigned int line;
1419 {
1420 if (operand->bits != 32)
1421 {
1422 long min, max;
1423 offsetT test;
1424
1425 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
1426 {
1427 if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0)
1428 max = (1 << operand->bits) - 1;
1429 else
1430 max = (1 << (operand->bits - 1)) - 1;
1431 min = - (1 << (operand->bits - 1));
1432
1433 if (!ppc_obj64)
1434 {
1435 /* Some people write 32 bit hex constants with the sign
1436 extension done by hand. This shouldn't really be
1437 valid, but, to permit this code to assemble on a 64
1438 bit host, we sign extend the 32 bit value. */
1439 if (val > 0
1440 && (val & (offsetT) 0x80000000) != 0
1441 && (val & (offsetT) 0xffffffff) == val)
1442 {
1443 val -= 0x80000000;
1444 val -= 0x80000000;
1445 }
1446 }
1447 }
1448 else
1449 {
1450 max = (1 << operand->bits) - 1;
1451 min = 0;
1452 }
1453
1454 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
1455 test = - val;
1456 else
1457 test = val;
1458
1459 if (test < (offsetT) min || test > (offsetT) max)
1460 {
1461 const char *err =
1462 _("operand out of range (%s not between %ld and %ld)");
1463 char buf[100];
1464
1465 sprint_value (buf, test);
1466 as_bad_where (file, line, err, buf, min, max);
1467 }
1468 }
1469
1470 if (operand->insert)
1471 {
1472 const char *errmsg;
1473
1474 errmsg = NULL;
1475 insn = (*operand->insert) (insn, (long) val, ppc_cpu, &errmsg);
1476 if (errmsg != (const char *) NULL)
1477 as_bad_where (file, line, errmsg);
1478 }
1479 else
1480 insn |= (((long) val & ((1 << operand->bits) - 1))
1481 << operand->shift);
1482
1483 return insn;
1484 }
1485
1486
1487 #ifdef OBJ_ELF
1488 /* Parse @got, etc. and return the desired relocation. */
1489 static bfd_reloc_code_real_type
ppc_elf_suffix(str_p,exp_p)1490 ppc_elf_suffix (str_p, exp_p)
1491 char **str_p;
1492 expressionS *exp_p;
1493 {
1494 struct map_bfd {
1495 char *string;
1496 unsigned int length : 8;
1497 unsigned int valid32 : 1;
1498 unsigned int valid64 : 1;
1499 unsigned int reloc;
1500 };
1501
1502 char ident[20];
1503 char *str = *str_p;
1504 char *str2;
1505 int ch;
1506 int len;
1507 const struct map_bfd *ptr;
1508
1509 #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc }
1510 #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc }
1511 #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc }
1512
1513 static const struct map_bfd mapping[] = {
1514 MAP ("l", BFD_RELOC_LO16),
1515 MAP ("h", BFD_RELOC_HI16),
1516 MAP ("ha", BFD_RELOC_HI16_S),
1517 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN),
1518 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN),
1519 MAP ("got", BFD_RELOC_16_GOTOFF),
1520 MAP ("got@l", BFD_RELOC_LO16_GOTOFF),
1521 MAP ("got@h", BFD_RELOC_HI16_GOTOFF),
1522 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF),
1523 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF),
1524 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF),
1525 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF),
1526 MAP ("copy", BFD_RELOC_PPC_COPY),
1527 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT),
1528 MAP ("sectoff", BFD_RELOC_16_BASEREL),
1529 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL),
1530 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL),
1531 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL),
1532 MAP ("tls", BFD_RELOC_PPC_TLS),
1533 MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD),
1534 MAP ("dtprel", BFD_RELOC_PPC_DTPREL),
1535 MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO),
1536 MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI),
1537 MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA),
1538 MAP ("tprel", BFD_RELOC_PPC_TPREL),
1539 MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO),
1540 MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI),
1541 MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA),
1542 MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16),
1543 MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO),
1544 MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI),
1545 MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA),
1546 MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16),
1547 MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO),
1548 MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI),
1549 MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA),
1550 MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16),
1551 MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO),
1552 MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI),
1553 MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA),
1554 MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16),
1555 MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO),
1556 MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI),
1557 MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA),
1558 MAP32 ("fixup", BFD_RELOC_CTOR),
1559 MAP32 ("plt", BFD_RELOC_24_PLT_PCREL),
1560 MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL),
1561 MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC),
1562 MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC),
1563 MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL),
1564 MAP32 ("sdarel", BFD_RELOC_GPREL16),
1565 MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32),
1566 MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16),
1567 MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO),
1568 MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI),
1569 MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA),
1570 MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16),
1571 MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL),
1572 MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16),
1573 MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21),
1574 MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF),
1575 MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16),
1576 MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO),
1577 MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI),
1578 MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA),
1579 MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD),
1580 MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA),
1581 MAP32 ("xgot", BFD_RELOC_PPC_TOC16),
1582 MAP64 ("higher", BFD_RELOC_PPC64_HIGHER),
1583 MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S),
1584 MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST),
1585 MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S),
1586 MAP64 ("tocbase", BFD_RELOC_PPC64_TOC),
1587 MAP64 ("toc", BFD_RELOC_PPC_TOC16),
1588 MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO),
1589 MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI),
1590 MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA),
1591 MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER),
1592 MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA),
1593 MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST),
1594 MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA),
1595 MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER),
1596 MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA),
1597 MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST),
1598 MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA),
1599 { (char *) 0, 0, 0, 0, BFD_RELOC_UNUSED }
1600 };
1601
1602 if (*str++ != '@')
1603 return BFD_RELOC_UNUSED;
1604
1605 for (ch = *str, str2 = ident;
1606 (str2 < ident + sizeof (ident) - 1
1607 && (ISALNUM (ch) || ch == '@'));
1608 ch = *++str)
1609 {
1610 *str2++ = TOLOWER (ch);
1611 }
1612
1613 *str2 = '\0';
1614 len = str2 - ident;
1615
1616 ch = ident[0];
1617 for (ptr = &mapping[0]; ptr->length > 0; ptr++)
1618 if (ch == ptr->string[0]
1619 && len == ptr->length
1620 && memcmp (ident, ptr->string, ptr->length) == 0
1621 && (ppc_obj64 ? ptr->valid64 : ptr->valid32))
1622 {
1623 int reloc = ptr->reloc;
1624
1625 if (!ppc_obj64)
1626 if (exp_p->X_add_number != 0
1627 && (reloc == (int) BFD_RELOC_16_GOTOFF
1628 || reloc == (int) BFD_RELOC_LO16_GOTOFF
1629 || reloc == (int) BFD_RELOC_HI16_GOTOFF
1630 || reloc == (int) BFD_RELOC_HI16_S_GOTOFF))
1631 as_warn (_("identifier+constant@got means identifier@got+constant"));
1632
1633 /* Now check for identifier@suffix+constant. */
1634 if (*str == '-' || *str == '+')
1635 {
1636 char *orig_line = input_line_pointer;
1637 expressionS new_exp;
1638
1639 input_line_pointer = str;
1640 expression (&new_exp);
1641 if (new_exp.X_op == O_constant)
1642 {
1643 exp_p->X_add_number += new_exp.X_add_number;
1644 str = input_line_pointer;
1645 }
1646
1647 if (&input_line_pointer != str_p)
1648 input_line_pointer = orig_line;
1649 }
1650 *str_p = str;
1651
1652 if (reloc == (int) BFD_RELOC_PPC64_TOC
1653 && exp_p->X_op == O_symbol
1654 && strcmp (S_GET_NAME (exp_p->X_add_symbol), ".TOC.") == 0)
1655 {
1656 /* Change the symbol so that the dummy .TOC. symbol can be
1657 omitted from the object file. */
1658 exp_p->X_add_symbol = &abs_symbol;
1659 }
1660
1661 return (bfd_reloc_code_real_type) reloc;
1662 }
1663
1664 return BFD_RELOC_UNUSED;
1665 }
1666
1667 /* Like normal .long/.short/.word, except support @got, etc.
1668 Clobbers input_line_pointer, checks end-of-line. */
1669 static void
ppc_elf_cons(nbytes)1670 ppc_elf_cons (nbytes)
1671 register int nbytes; /* 1=.byte, 2=.word, 4=.long, 8=.llong. */
1672 {
1673 expressionS exp;
1674 bfd_reloc_code_real_type reloc;
1675
1676 if (is_it_end_of_statement ())
1677 {
1678 demand_empty_rest_of_line ();
1679 return;
1680 }
1681
1682 do
1683 {
1684 expression (&exp);
1685 if (exp.X_op == O_symbol
1686 && *input_line_pointer == '@'
1687 && (reloc = ppc_elf_suffix (&input_line_pointer,
1688 &exp)) != BFD_RELOC_UNUSED)
1689 {
1690 reloc_howto_type *reloc_howto;
1691 int size;
1692
1693 reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
1694 size = bfd_get_reloc_size (reloc_howto);
1695
1696 if (size > nbytes)
1697 {
1698 as_bad (_("%s relocations do not fit in %d bytes\n"),
1699 reloc_howto->name, nbytes);
1700 }
1701 else
1702 {
1703 char *p;
1704 int offset;
1705
1706 p = frag_more (nbytes);
1707 offset = 0;
1708 if (target_big_endian)
1709 offset = nbytes - size;
1710 fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size,
1711 &exp, 0, reloc);
1712 }
1713 }
1714 else
1715 emit_expr (&exp, (unsigned int) nbytes);
1716 }
1717 while (*input_line_pointer++ == ',');
1718
1719 /* Put terminator back into stream. */
1720 input_line_pointer--;
1721 demand_empty_rest_of_line ();
1722 }
1723
1724 /* Solaris pseduo op to change to the .rodata section. */
1725 static void
ppc_elf_rdata(xxx)1726 ppc_elf_rdata (xxx)
1727 int xxx;
1728 {
1729 char *save_line = input_line_pointer;
1730 static char section[] = ".rodata\n";
1731
1732 /* Just pretend this is .section .rodata */
1733 input_line_pointer = section;
1734 obj_elf_section (xxx);
1735
1736 input_line_pointer = save_line;
1737 }
1738
1739 /* Pseudo op to make file scope bss items. */
1740 static void
ppc_elf_lcomm(xxx)1741 ppc_elf_lcomm (xxx)
1742 int xxx ATTRIBUTE_UNUSED;
1743 {
1744 register char *name;
1745 register char c;
1746 register char *p;
1747 offsetT size;
1748 register symbolS *symbolP;
1749 offsetT align;
1750 segT old_sec;
1751 int old_subsec;
1752 char *pfrag;
1753 int align2;
1754
1755 name = input_line_pointer;
1756 c = get_symbol_end ();
1757
1758 /* just after name is now '\0'. */
1759 p = input_line_pointer;
1760 *p = c;
1761 SKIP_WHITESPACE ();
1762 if (*input_line_pointer != ',')
1763 {
1764 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
1765 ignore_rest_of_line ();
1766 return;
1767 }
1768
1769 input_line_pointer++; /* skip ',' */
1770 if ((size = get_absolute_expression ()) < 0)
1771 {
1772 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
1773 ignore_rest_of_line ();
1774 return;
1775 }
1776
1777 /* The third argument to .lcomm is the alignment. */
1778 if (*input_line_pointer != ',')
1779 align = 8;
1780 else
1781 {
1782 ++input_line_pointer;
1783 align = get_absolute_expression ();
1784 if (align <= 0)
1785 {
1786 as_warn (_("ignoring bad alignment"));
1787 align = 8;
1788 }
1789 }
1790
1791 *p = 0;
1792 symbolP = symbol_find_or_make (name);
1793 *p = c;
1794
1795 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
1796 {
1797 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
1798 S_GET_NAME (symbolP));
1799 ignore_rest_of_line ();
1800 return;
1801 }
1802
1803 if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
1804 {
1805 as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
1806 S_GET_NAME (symbolP),
1807 (long) S_GET_VALUE (symbolP),
1808 (long) size);
1809
1810 ignore_rest_of_line ();
1811 return;
1812 }
1813
1814 /* Allocate_bss. */
1815 old_sec = now_seg;
1816 old_subsec = now_subseg;
1817 if (align)
1818 {
1819 /* Convert to a power of 2 alignment. */
1820 for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
1821 if (align != 1)
1822 {
1823 as_bad (_("Common alignment not a power of 2"));
1824 ignore_rest_of_line ();
1825 return;
1826 }
1827 }
1828 else
1829 align2 = 0;
1830
1831 record_alignment (bss_section, align2);
1832 subseg_set (bss_section, 0);
1833 if (align2)
1834 frag_align (align2, 0, 0);
1835 if (S_GET_SEGMENT (symbolP) == bss_section)
1836 symbol_get_frag (symbolP)->fr_symbol = 0;
1837 symbol_set_frag (symbolP, frag_now);
1838 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
1839 (char *) 0);
1840 *pfrag = 0;
1841 S_SET_SIZE (symbolP, size);
1842 S_SET_SEGMENT (symbolP, bss_section);
1843 subseg_set (old_sec, old_subsec);
1844 demand_empty_rest_of_line ();
1845 }
1846
1847 /* Validate any relocations emitted for -mrelocatable, possibly adding
1848 fixups for word relocations in writable segments, so we can adjust
1849 them at runtime. */
1850 static void
ppc_elf_validate_fix(fixp,seg)1851 ppc_elf_validate_fix (fixp, seg)
1852 fixS *fixp;
1853 segT seg;
1854 {
1855 if (fixp->fx_done || fixp->fx_pcrel)
1856 return;
1857
1858 switch (shlib)
1859 {
1860 case SHLIB_NONE:
1861 case SHLIB_PIC:
1862 return;
1863
1864 case SHLIB_MRELOCATABLE:
1865 if (fixp->fx_r_type <= BFD_RELOC_UNUSED
1866 && fixp->fx_r_type != BFD_RELOC_16_GOTOFF
1867 && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
1868 && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
1869 && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
1870 && fixp->fx_r_type != BFD_RELOC_16_BASEREL
1871 && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
1872 && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
1873 && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
1874 && (seg->flags & SEC_LOAD) != 0
1875 && strcmp (segment_name (seg), ".got2") != 0
1876 && strcmp (segment_name (seg), ".dtors") != 0
1877 && strcmp (segment_name (seg), ".ctors") != 0
1878 && strcmp (segment_name (seg), ".fixup") != 0
1879 && strcmp (segment_name (seg), ".gcc_except_table") != 0
1880 && strcmp (segment_name (seg), ".eh_frame") != 0
1881 && strcmp (segment_name (seg), ".ex_shared") != 0)
1882 {
1883 if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
1884 || fixp->fx_r_type != BFD_RELOC_CTOR)
1885 {
1886 as_bad_where (fixp->fx_file, fixp->fx_line,
1887 _("Relocation cannot be done when using -mrelocatable"));
1888 }
1889 }
1890 return;
1891 }
1892 }
1893
1894 /* Prevent elf_frob_file_before_adjust removing a weak undefined
1895 function descriptor sym if the corresponding code sym is used. */
1896
1897 void
ppc_frob_file_before_adjust()1898 ppc_frob_file_before_adjust ()
1899 {
1900 symbolS *symp;
1901
1902 if (!ppc_obj64)
1903 return;
1904
1905 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
1906 {
1907 const char *name;
1908 char *dotname;
1909 symbolS *dotsym;
1910 size_t len;
1911
1912 name = S_GET_NAME (symp);
1913 if (name[0] == '.')
1914 continue;
1915
1916 if (! S_IS_WEAK (symp)
1917 || S_IS_DEFINED (symp))
1918 continue;
1919
1920 len = strlen (name) + 1;
1921 dotname = xmalloc (len + 1);
1922 dotname[0] = '.';
1923 memcpy (dotname + 1, name, len);
1924 dotsym = symbol_find (dotname);
1925 free (dotname);
1926 if (dotsym != NULL && (symbol_used_p (dotsym)
1927 || symbol_used_in_reloc_p (dotsym)))
1928 {
1929 symbol_mark_used (symp);
1930 }
1931 }
1932
1933 /* Don't emit .TOC. symbol. */
1934 symp = symbol_find (".TOC.");
1935 if (symp != NULL)
1936 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
1937 }
1938 #endif /* OBJ_ELF */
1939
1940 #ifdef TE_PE
1941
1942 /*
1943 * Summary of parse_toc_entry.
1944 *
1945 * in: Input_line_pointer points to the '[' in one of:
1946 *
1947 * [toc] [tocv] [toc32] [toc64]
1948 *
1949 * Anything else is an error of one kind or another.
1950 *
1951 * out:
1952 * return value: success or failure
1953 * toc_kind: kind of toc reference
1954 * input_line_pointer:
1955 * success: first char after the ']'
1956 * failure: unchanged
1957 *
1958 * settings:
1959 *
1960 * [toc] - rv == success, toc_kind = default_toc
1961 * [tocv] - rv == success, toc_kind = data_in_toc
1962 * [toc32] - rv == success, toc_kind = must_be_32
1963 * [toc64] - rv == success, toc_kind = must_be_64
1964 *
1965 */
1966
1967 enum toc_size_qualifier
1968 {
1969 default_toc, /* The toc cell constructed should be the system default size */
1970 data_in_toc, /* This is a direct reference to a toc cell */
1971 must_be_32, /* The toc cell constructed must be 32 bits wide */
1972 must_be_64 /* The toc cell constructed must be 64 bits wide */
1973 };
1974
1975 static int
parse_toc_entry(toc_kind)1976 parse_toc_entry (toc_kind)
1977 enum toc_size_qualifier *toc_kind;
1978 {
1979 char *start;
1980 char *toc_spec;
1981 char c;
1982 enum toc_size_qualifier t;
1983
1984 /* Save the input_line_pointer. */
1985 start = input_line_pointer;
1986
1987 /* Skip over the '[' , and whitespace. */
1988 ++input_line_pointer;
1989 SKIP_WHITESPACE ();
1990
1991 /* Find the spelling of the operand. */
1992 toc_spec = input_line_pointer;
1993 c = get_symbol_end ();
1994
1995 if (strcmp (toc_spec, "toc") == 0)
1996 {
1997 t = default_toc;
1998 }
1999 else if (strcmp (toc_spec, "tocv") == 0)
2000 {
2001 t = data_in_toc;
2002 }
2003 else if (strcmp (toc_spec, "toc32") == 0)
2004 {
2005 t = must_be_32;
2006 }
2007 else if (strcmp (toc_spec, "toc64") == 0)
2008 {
2009 t = must_be_64;
2010 }
2011 else
2012 {
2013 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec);
2014 *input_line_pointer = c;
2015 input_line_pointer = start;
2016 return 0;
2017 }
2018
2019 /* Now find the ']'. */
2020 *input_line_pointer = c;
2021
2022 SKIP_WHITESPACE (); /* leading whitespace could be there. */
2023 c = *input_line_pointer++; /* input_line_pointer->past char in c. */
2024
2025 if (c != ']')
2026 {
2027 as_bad (_("syntax error: expected `]', found `%c'"), c);
2028 input_line_pointer = start;
2029 return 0;
2030 }
2031
2032 *toc_kind = t;
2033 return 1;
2034 }
2035 #endif
2036
2037
2038 #ifdef OBJ_ELF
2039 #define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff))
2040 static void
ppc_apuinfo_section_add(apu,version)2041 ppc_apuinfo_section_add (apu, version)
2042 unsigned int apu, version;
2043 {
2044 unsigned int i;
2045
2046 /* Check we don't already exist. */
2047 for (i = 0; i < ppc_apuinfo_num; i++)
2048 if (ppc_apuinfo_list[i] == APUID (apu, version))
2049 return;
2050
2051 if (ppc_apuinfo_num == ppc_apuinfo_num_alloc)
2052 {
2053 if (ppc_apuinfo_num_alloc == 0)
2054 {
2055 ppc_apuinfo_num_alloc = 4;
2056 ppc_apuinfo_list = (unsigned long *)
2057 xmalloc (sizeof (unsigned long) * ppc_apuinfo_num_alloc);
2058 }
2059 else
2060 {
2061 ppc_apuinfo_num_alloc += 4;
2062 ppc_apuinfo_list = (unsigned long *) xrealloc (ppc_apuinfo_list,
2063 sizeof (unsigned long) * ppc_apuinfo_num_alloc);
2064 }
2065 }
2066 ppc_apuinfo_list[ppc_apuinfo_num++] = APUID (apu, version);
2067 }
2068 #undef APUID
2069 #endif
2070
2071
2072 /* We need to keep a list of fixups. We can't simply generate them as
2073 we go, because that would require us to first create the frag, and
2074 that would screw up references to ``.''. */
2075
2076 struct ppc_fixup
2077 {
2078 expressionS exp;
2079 int opindex;
2080 bfd_reloc_code_real_type reloc;
2081 };
2082
2083 #define MAX_INSN_FIXUPS (5)
2084
2085 /* This routine is called for each instruction to be assembled. */
2086
2087 void
md_assemble(str)2088 md_assemble (str)
2089 char *str;
2090 {
2091 char *s;
2092 const struct powerpc_opcode *opcode;
2093 unsigned long insn;
2094 const unsigned char *opindex_ptr;
2095 int skip_optional;
2096 int need_paren;
2097 int next_opindex;
2098 struct ppc_fixup fixups[MAX_INSN_FIXUPS];
2099 int fc;
2100 char *f;
2101 int i;
2102 #ifdef OBJ_ELF
2103 bfd_reloc_code_real_type reloc;
2104 #endif
2105
2106 /* Get the opcode. */
2107 for (s = str; *s != '\0' && ! ISSPACE (*s); s++)
2108 ;
2109 if (*s != '\0')
2110 *s++ = '\0';
2111
2112 /* Look up the opcode in the hash table. */
2113 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str);
2114 if (opcode == (const struct powerpc_opcode *) NULL)
2115 {
2116 const struct powerpc_macro *macro;
2117
2118 macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str);
2119 if (macro == (const struct powerpc_macro *) NULL)
2120 as_bad (_("Unrecognized opcode: `%s'"), str);
2121 else
2122 ppc_macro (s, macro);
2123
2124 return;
2125 }
2126
2127 insn = opcode->opcode;
2128
2129 str = s;
2130 while (ISSPACE (*str))
2131 ++str;
2132
2133 /* PowerPC operands are just expressions. The only real issue is
2134 that a few operand types are optional. All cases which might use
2135 an optional operand separate the operands only with commas (in some
2136 cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never
2137 have optional operands). Most instructions with optional operands
2138 have only one. Those that have more than one optional operand can
2139 take either all their operands or none. So, before we start seriously
2140 parsing the operands, we check to see if we have optional operands,
2141 and if we do, we count the number of commas to see which operands
2142 have been omitted. */
2143 skip_optional = 0;
2144 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
2145 {
2146 const struct powerpc_operand *operand;
2147
2148 operand = &powerpc_operands[*opindex_ptr];
2149 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
2150 {
2151 unsigned int opcount;
2152 unsigned int num_operands_expected;
2153 unsigned int i;
2154
2155 /* There is an optional operand. Count the number of
2156 commas in the input line. */
2157 if (*str == '\0')
2158 opcount = 0;
2159 else
2160 {
2161 opcount = 1;
2162 s = str;
2163 while ((s = strchr (s, ',')) != (char *) NULL)
2164 {
2165 ++opcount;
2166 ++s;
2167 }
2168 }
2169
2170 /* Compute the number of expected operands.
2171 Do not count fake operands. */
2172 for (num_operands_expected = 0, i = 0; opcode->operands[i]; i ++)
2173 if ((powerpc_operands [opcode->operands[i]].flags & PPC_OPERAND_FAKE) == 0)
2174 ++ num_operands_expected;
2175
2176 /* If there are fewer operands in the line then are called
2177 for by the instruction, we want to skip the optional
2178 operands. */
2179 if (opcount < num_operands_expected)
2180 skip_optional = 1;
2181
2182 break;
2183 }
2184 }
2185
2186 /* Gather the operands. */
2187 need_paren = 0;
2188 next_opindex = 0;
2189 fc = 0;
2190 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
2191 {
2192 const struct powerpc_operand *operand;
2193 const char *errmsg;
2194 char *hold;
2195 expressionS ex;
2196 char endc;
2197
2198 if (next_opindex == 0)
2199 operand = &powerpc_operands[*opindex_ptr];
2200 else
2201 {
2202 operand = &powerpc_operands[next_opindex];
2203 next_opindex = 0;
2204 }
2205 errmsg = NULL;
2206
2207 /* If this is a fake operand, then we do not expect anything
2208 from the input. */
2209 if ((operand->flags & PPC_OPERAND_FAKE) != 0)
2210 {
2211 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg);
2212 if (errmsg != (const char *) NULL)
2213 as_bad (errmsg);
2214 continue;
2215 }
2216
2217 /* If this is an optional operand, and we are skipping it, just
2218 insert a zero. */
2219 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
2220 && skip_optional)
2221 {
2222 if (operand->insert)
2223 {
2224 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg);
2225 if (errmsg != (const char *) NULL)
2226 as_bad (errmsg);
2227 }
2228 if ((operand->flags & PPC_OPERAND_NEXT) != 0)
2229 next_opindex = *opindex_ptr + 1;
2230 continue;
2231 }
2232
2233 /* Gather the operand. */
2234 hold = input_line_pointer;
2235 input_line_pointer = str;
2236
2237 #ifdef TE_PE
2238 if (*input_line_pointer == '[')
2239 {
2240 /* We are expecting something like the second argument here:
2241 *
2242 * lwz r4,[toc].GS.0.static_int(rtoc)
2243 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2244 * The argument following the `]' must be a symbol name, and the
2245 * register must be the toc register: 'rtoc' or '2'
2246 *
2247 * The effect is to 0 as the displacement field
2248 * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
2249 * the appropriate variation) reloc against it based on the symbol.
2250 * The linker will build the toc, and insert the resolved toc offset.
2251 *
2252 * Note:
2253 * o The size of the toc entry is currently assumed to be
2254 * 32 bits. This should not be assumed to be a hard coded
2255 * number.
2256 * o In an effort to cope with a change from 32 to 64 bits,
2257 * there are also toc entries that are specified to be
2258 * either 32 or 64 bits:
2259 * lwz r4,[toc32].GS.0.static_int(rtoc)
2260 * lwz r4,[toc64].GS.0.static_int(rtoc)
2261 * These demand toc entries of the specified size, and the
2262 * instruction probably requires it.
2263 */
2264
2265 int valid_toc;
2266 enum toc_size_qualifier toc_kind;
2267 bfd_reloc_code_real_type toc_reloc;
2268
2269 /* Go parse off the [tocXX] part. */
2270 valid_toc = parse_toc_entry (&toc_kind);
2271
2272 if (!valid_toc)
2273 {
2274 /* Note: message has already been issued.
2275 FIXME: what sort of recovery should we do?
2276 demand_rest_of_line (); return; ? */
2277 }
2278
2279 /* Now get the symbol following the ']'. */
2280 expression (&ex);
2281
2282 switch (toc_kind)
2283 {
2284 case default_toc:
2285 /* In this case, we may not have seen the symbol yet,
2286 since it is allowed to appear on a .extern or .globl
2287 or just be a label in the .data section. */
2288 toc_reloc = BFD_RELOC_PPC_TOC16;
2289 break;
2290 case data_in_toc:
2291 /* 1. The symbol must be defined and either in the toc
2292 section, or a global.
2293 2. The reloc generated must have the TOCDEFN flag set
2294 in upper bit mess of the reloc type.
2295 FIXME: It's a little confusing what the tocv
2296 qualifier can be used for. At the very least, I've
2297 seen three uses, only one of which I'm sure I can
2298 explain. */
2299 if (ex.X_op == O_symbol)
2300 {
2301 assert (ex.X_add_symbol != NULL);
2302 if (symbol_get_bfdsym (ex.X_add_symbol)->section
2303 != tocdata_section)
2304 {
2305 as_bad (_("[tocv] symbol is not a toc symbol"));
2306 }
2307 }
2308
2309 toc_reloc = BFD_RELOC_PPC_TOC16;
2310 break;
2311 case must_be_32:
2312 /* FIXME: these next two specifically specify 32/64 bit
2313 toc entries. We don't support them today. Is this
2314 the right way to say that? */
2315 toc_reloc = BFD_RELOC_UNUSED;
2316 as_bad (_("Unimplemented toc32 expression modifier"));
2317 break;
2318 case must_be_64:
2319 /* FIXME: see above. */
2320 toc_reloc = BFD_RELOC_UNUSED;
2321 as_bad (_("Unimplemented toc64 expression modifier"));
2322 break;
2323 default:
2324 fprintf (stderr,
2325 _("Unexpected return value [%d] from parse_toc_entry!\n"),
2326 toc_kind);
2327 abort ();
2328 break;
2329 }
2330
2331 /* We need to generate a fixup for this expression. */
2332 if (fc >= MAX_INSN_FIXUPS)
2333 as_fatal (_("too many fixups"));
2334
2335 fixups[fc].reloc = toc_reloc;
2336 fixups[fc].exp = ex;
2337 fixups[fc].opindex = *opindex_ptr;
2338 ++fc;
2339
2340 /* Ok. We've set up the fixup for the instruction. Now make it
2341 look like the constant 0 was found here. */
2342 ex.X_unsigned = 1;
2343 ex.X_op = O_constant;
2344 ex.X_add_number = 0;
2345 ex.X_add_symbol = NULL;
2346 ex.X_op_symbol = NULL;
2347 }
2348
2349 else
2350 #endif /* TE_PE */
2351 {
2352 if (! register_name (&ex))
2353 {
2354 if ((operand->flags & PPC_OPERAND_CR) != 0)
2355 cr_operand = TRUE;
2356 expression (&ex);
2357 cr_operand = FALSE;
2358 }
2359 }
2360
2361 str = input_line_pointer;
2362 input_line_pointer = hold;
2363
2364 if (ex.X_op == O_illegal)
2365 as_bad (_("illegal operand"));
2366 else if (ex.X_op == O_absent)
2367 as_bad (_("missing operand"));
2368 else if (ex.X_op == O_register)
2369 {
2370 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2371 (char *) NULL, 0);
2372 }
2373 else if (ex.X_op == O_constant)
2374 {
2375 #ifdef OBJ_ELF
2376 /* Allow @HA, @L, @H on constants. */
2377 char *orig_str = str;
2378
2379 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2380 switch (reloc)
2381 {
2382 default:
2383 str = orig_str;
2384 break;
2385
2386 case BFD_RELOC_LO16:
2387 /* X_unsigned is the default, so if the user has done
2388 something which cleared it, we always produce a
2389 signed value. */
2390 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2391 ex.X_add_number &= 0xffff;
2392 else
2393 ex.X_add_number = SEX16 (ex.X_add_number);
2394 break;
2395
2396 case BFD_RELOC_HI16:
2397 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2398 ex.X_add_number = PPC_HI (ex.X_add_number);
2399 else
2400 ex.X_add_number = SEX16 (PPC_HI (ex.X_add_number));
2401 break;
2402
2403 case BFD_RELOC_HI16_S:
2404 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2405 ex.X_add_number = PPC_HA (ex.X_add_number);
2406 else
2407 ex.X_add_number = SEX16 (PPC_HA (ex.X_add_number));
2408 break;
2409
2410 case BFD_RELOC_PPC64_HIGHER:
2411 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2412 ex.X_add_number = PPC_HIGHER (ex.X_add_number);
2413 else
2414 ex.X_add_number = SEX16 (PPC_HIGHER (ex.X_add_number));
2415 break;
2416
2417 case BFD_RELOC_PPC64_HIGHER_S:
2418 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2419 ex.X_add_number = PPC_HIGHERA (ex.X_add_number);
2420 else
2421 ex.X_add_number = SEX16 (PPC_HIGHERA (ex.X_add_number));
2422 break;
2423
2424 case BFD_RELOC_PPC64_HIGHEST:
2425 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2426 ex.X_add_number = PPC_HIGHEST (ex.X_add_number);
2427 else
2428 ex.X_add_number = SEX16 (PPC_HIGHEST (ex.X_add_number));
2429 break;
2430
2431 case BFD_RELOC_PPC64_HIGHEST_S:
2432 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2433 ex.X_add_number = PPC_HIGHESTA (ex.X_add_number);
2434 else
2435 ex.X_add_number = SEX16 (PPC_HIGHESTA (ex.X_add_number));
2436 break;
2437 }
2438 #endif /* OBJ_ELF */
2439 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2440 (char *) NULL, 0);
2441 }
2442 #ifdef OBJ_ELF
2443 else if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2444 {
2445 /* Some TLS tweaks. */
2446 switch (reloc)
2447 {
2448 default:
2449 break;
2450 case BFD_RELOC_PPC_TLS:
2451 insn = ppc_insert_operand (insn, operand, ppc_obj64 ? 13 : 2,
2452 (char *) NULL, 0);
2453 break;
2454 /* We'll only use the 32 (or 64) bit form of these relocations
2455 in constants. Instructions get the 16 bit form. */
2456 case BFD_RELOC_PPC_DTPREL:
2457 reloc = BFD_RELOC_PPC_DTPREL16;
2458 break;
2459 case BFD_RELOC_PPC_TPREL:
2460 reloc = BFD_RELOC_PPC_TPREL16;
2461 break;
2462 }
2463
2464 /* For the absolute forms of branches, convert the PC
2465 relative form back into the absolute. */
2466 if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
2467 {
2468 switch (reloc)
2469 {
2470 case BFD_RELOC_PPC_B26:
2471 reloc = BFD_RELOC_PPC_BA26;
2472 break;
2473 case BFD_RELOC_PPC_B16:
2474 reloc = BFD_RELOC_PPC_BA16;
2475 break;
2476 case BFD_RELOC_PPC_B16_BRTAKEN:
2477 reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
2478 break;
2479 case BFD_RELOC_PPC_B16_BRNTAKEN:
2480 reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
2481 break;
2482 default:
2483 break;
2484 }
2485 }
2486
2487 if (ppc_obj64
2488 && (operand->flags & (PPC_OPERAND_DS | PPC_OPERAND_DQ)) != 0)
2489 {
2490 switch (reloc)
2491 {
2492 case BFD_RELOC_16:
2493 reloc = BFD_RELOC_PPC64_ADDR16_DS;
2494 break;
2495 case BFD_RELOC_LO16:
2496 reloc = BFD_RELOC_PPC64_ADDR16_LO_DS;
2497 break;
2498 case BFD_RELOC_16_GOTOFF:
2499 reloc = BFD_RELOC_PPC64_GOT16_DS;
2500 break;
2501 case BFD_RELOC_LO16_GOTOFF:
2502 reloc = BFD_RELOC_PPC64_GOT16_LO_DS;
2503 break;
2504 case BFD_RELOC_LO16_PLTOFF:
2505 reloc = BFD_RELOC_PPC64_PLT16_LO_DS;
2506 break;
2507 case BFD_RELOC_16_BASEREL:
2508 reloc = BFD_RELOC_PPC64_SECTOFF_DS;
2509 break;
2510 case BFD_RELOC_LO16_BASEREL:
2511 reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS;
2512 break;
2513 case BFD_RELOC_PPC_TOC16:
2514 reloc = BFD_RELOC_PPC64_TOC16_DS;
2515 break;
2516 case BFD_RELOC_PPC64_TOC16_LO:
2517 reloc = BFD_RELOC_PPC64_TOC16_LO_DS;
2518 break;
2519 case BFD_RELOC_PPC64_PLTGOT16:
2520 reloc = BFD_RELOC_PPC64_PLTGOT16_DS;
2521 break;
2522 case BFD_RELOC_PPC64_PLTGOT16_LO:
2523 reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS;
2524 break;
2525 case BFD_RELOC_PPC_DTPREL16:
2526 reloc = BFD_RELOC_PPC64_DTPREL16_DS;
2527 break;
2528 case BFD_RELOC_PPC_DTPREL16_LO:
2529 reloc = BFD_RELOC_PPC64_DTPREL16_LO_DS;
2530 break;
2531 case BFD_RELOC_PPC_TPREL16:
2532 reloc = BFD_RELOC_PPC64_TPREL16_DS;
2533 break;
2534 case BFD_RELOC_PPC_TPREL16_LO:
2535 reloc = BFD_RELOC_PPC64_TPREL16_LO_DS;
2536 break;
2537 case BFD_RELOC_PPC_GOT_DTPREL16:
2538 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
2539 case BFD_RELOC_PPC_GOT_TPREL16:
2540 case BFD_RELOC_PPC_GOT_TPREL16_LO:
2541 break;
2542 default:
2543 as_bad (_("unsupported relocation for DS offset field"));
2544 break;
2545 }
2546 }
2547
2548 /* We need to generate a fixup for this expression. */
2549 if (fc >= MAX_INSN_FIXUPS)
2550 as_fatal (_("too many fixups"));
2551 fixups[fc].exp = ex;
2552 fixups[fc].opindex = 0;
2553 fixups[fc].reloc = reloc;
2554 ++fc;
2555 }
2556 #endif /* OBJ_ELF */
2557
2558 else
2559 {
2560 /* We need to generate a fixup for this expression. */
2561 if (fc >= MAX_INSN_FIXUPS)
2562 as_fatal (_("too many fixups"));
2563 fixups[fc].exp = ex;
2564 fixups[fc].opindex = *opindex_ptr;
2565 fixups[fc].reloc = BFD_RELOC_UNUSED;
2566 ++fc;
2567 }
2568
2569 if (need_paren)
2570 {
2571 endc = ')';
2572 need_paren = 0;
2573 }
2574 else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
2575 {
2576 endc = '(';
2577 need_paren = 1;
2578 }
2579 else
2580 endc = ',';
2581
2582 /* The call to expression should have advanced str past any
2583 whitespace. */
2584 if (*str != endc
2585 && (endc != ',' || *str != '\0'))
2586 {
2587 as_bad (_("syntax error; found `%c' but expected `%c'"), *str, endc);
2588 break;
2589 }
2590
2591 if (*str != '\0')
2592 ++str;
2593 }
2594
2595 while (ISSPACE (*str))
2596 ++str;
2597
2598 if (*str != '\0')
2599 as_bad (_("junk at end of line: `%s'"), str);
2600
2601 #ifdef OBJ_ELF
2602 /* Do we need/want a APUinfo section? */
2603 if (ppc_cpu & (PPC_OPCODE_SPE
2604 | PPC_OPCODE_ISEL | PPC_OPCODE_EFS
2605 | PPC_OPCODE_BRLOCK | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK
2606 | PPC_OPCODE_RFMCI))
2607 {
2608 /* These are all version "1". */
2609 if (opcode->flags & PPC_OPCODE_SPE)
2610 ppc_apuinfo_section_add (PPC_APUINFO_SPE, 1);
2611 if (opcode->flags & PPC_OPCODE_ISEL)
2612 ppc_apuinfo_section_add (PPC_APUINFO_ISEL, 1);
2613 if (opcode->flags & PPC_OPCODE_EFS)
2614 ppc_apuinfo_section_add (PPC_APUINFO_EFS, 1);
2615 if (opcode->flags & PPC_OPCODE_BRLOCK)
2616 ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK, 1);
2617 if (opcode->flags & PPC_OPCODE_PMR)
2618 ppc_apuinfo_section_add (PPC_APUINFO_PMR, 1);
2619 if (opcode->flags & PPC_OPCODE_CACHELCK)
2620 ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK, 1);
2621 if (opcode->flags & PPC_OPCODE_RFMCI)
2622 ppc_apuinfo_section_add (PPC_APUINFO_RFMCI, 1);
2623 }
2624 #endif
2625
2626 /* Write out the instruction. */
2627 f = frag_more (4);
2628 md_number_to_chars (f, insn, 4);
2629
2630 #ifdef OBJ_ELF
2631 dwarf2_emit_insn (4);
2632 #endif
2633
2634 /* Create any fixups. At this point we do not use a
2635 bfd_reloc_code_real_type, but instead just use the
2636 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2637 handle fixups for any operand type, although that is admittedly
2638 not a very exciting feature. We pick a BFD reloc type in
2639 md_apply_fix3. */
2640 for (i = 0; i < fc; i++)
2641 {
2642 const struct powerpc_operand *operand;
2643
2644 operand = &powerpc_operands[fixups[i].opindex];
2645 if (fixups[i].reloc != BFD_RELOC_UNUSED)
2646 {
2647 reloc_howto_type *reloc_howto;
2648 int size;
2649 int offset;
2650 fixS *fixP;
2651
2652 reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
2653 if (!reloc_howto)
2654 abort ();
2655
2656 size = bfd_get_reloc_size (reloc_howto);
2657 offset = target_big_endian ? (4 - size) : 0;
2658
2659 if (size < 1 || size > 4)
2660 abort ();
2661
2662 fixP = fix_new_exp (frag_now,
2663 f - frag_now->fr_literal + offset,
2664 size,
2665 &fixups[i].exp,
2666 reloc_howto->pc_relative,
2667 fixups[i].reloc);
2668
2669 /* Turn off complaints that the addend is too large for things like
2670 foo+100000@ha. */
2671 switch (fixups[i].reloc)
2672 {
2673 case BFD_RELOC_16_GOTOFF:
2674 case BFD_RELOC_PPC_TOC16:
2675 case BFD_RELOC_LO16:
2676 case BFD_RELOC_HI16:
2677 case BFD_RELOC_HI16_S:
2678 #ifdef OBJ_ELF
2679 case BFD_RELOC_PPC64_HIGHER:
2680 case BFD_RELOC_PPC64_HIGHER_S:
2681 case BFD_RELOC_PPC64_HIGHEST:
2682 case BFD_RELOC_PPC64_HIGHEST_S:
2683 #endif
2684 fixP->fx_no_overflow = 1;
2685 break;
2686 default:
2687 break;
2688 }
2689 }
2690 else
2691 fix_new_exp (frag_now,
2692 f - frag_now->fr_literal,
2693 4,
2694 &fixups[i].exp,
2695 (operand->flags & PPC_OPERAND_RELATIVE) != 0,
2696 ((bfd_reloc_code_real_type)
2697 (fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
2698 }
2699 }
2700
2701 /* Handle a macro. Gather all the operands, transform them as
2702 described by the macro, and call md_assemble recursively. All the
2703 operands are separated by commas; we don't accept parentheses
2704 around operands here. */
2705
2706 static void
ppc_macro(str,macro)2707 ppc_macro (str, macro)
2708 char *str;
2709 const struct powerpc_macro *macro;
2710 {
2711 char *operands[10];
2712 unsigned int count;
2713 char *s;
2714 unsigned int len;
2715 const char *format;
2716 int arg;
2717 char *send;
2718 char *complete;
2719
2720 /* Gather the users operands into the operands array. */
2721 count = 0;
2722 s = str;
2723 while (1)
2724 {
2725 if (count >= sizeof operands / sizeof operands[0])
2726 break;
2727 operands[count++] = s;
2728 s = strchr (s, ',');
2729 if (s == (char *) NULL)
2730 break;
2731 *s++ = '\0';
2732 }
2733
2734 if (count != macro->operands)
2735 {
2736 as_bad (_("wrong number of operands"));
2737 return;
2738 }
2739
2740 /* Work out how large the string must be (the size is unbounded
2741 because it includes user input). */
2742 len = 0;
2743 format = macro->format;
2744 while (*format != '\0')
2745 {
2746 if (*format != '%')
2747 {
2748 ++len;
2749 ++format;
2750 }
2751 else
2752 {
2753 arg = strtol (format + 1, &send, 10);
2754 know (send != format && arg >= 0 && arg < count);
2755 len += strlen (operands[arg]);
2756 format = send;
2757 }
2758 }
2759
2760 /* Put the string together. */
2761 complete = s = (char *) alloca (len + 1);
2762 format = macro->format;
2763 while (*format != '\0')
2764 {
2765 if (*format != '%')
2766 *s++ = *format++;
2767 else
2768 {
2769 arg = strtol (format + 1, &send, 10);
2770 strcpy (s, operands[arg]);
2771 s += strlen (s);
2772 format = send;
2773 }
2774 }
2775 *s = '\0';
2776
2777 /* Assemble the constructed instruction. */
2778 md_assemble (complete);
2779 }
2780
2781 #ifdef OBJ_ELF
2782 /* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED. */
2783
2784 int
ppc_section_letter(letter,ptr_msg)2785 ppc_section_letter (letter, ptr_msg)
2786 int letter;
2787 char **ptr_msg;
2788 {
2789 if (letter == 'e')
2790 return SHF_EXCLUDE;
2791
2792 *ptr_msg = _("Bad .section directive: want a,e,w,x,M,S,G,T in string");
2793 return -1;
2794 }
2795
2796 int
ppc_section_word(str,len)2797 ppc_section_word (str, len)
2798 char *str;
2799 size_t len;
2800 {
2801 if (len == 7 && strncmp (str, "exclude", 7) == 0)
2802 return SHF_EXCLUDE;
2803
2804 return -1;
2805 }
2806
2807 int
ppc_section_type(str,len)2808 ppc_section_type (str, len)
2809 char *str;
2810 size_t len;
2811 {
2812 if (len == 7 && strncmp (str, "ordered", 7) == 0)
2813 return SHT_ORDERED;
2814
2815 return -1;
2816 }
2817
2818 int
ppc_section_flags(flags,attr,type)2819 ppc_section_flags (flags, attr, type)
2820 int flags;
2821 int attr;
2822 int type;
2823 {
2824 if (type == SHT_ORDERED)
2825 flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
2826
2827 if (attr & SHF_EXCLUDE)
2828 flags |= SEC_EXCLUDE;
2829
2830 return flags;
2831 }
2832 #endif /* OBJ_ELF */
2833
2834
2835 /* Pseudo-op handling. */
2836
2837 /* The .byte pseudo-op. This is similar to the normal .byte
2838 pseudo-op, but it can also take a single ASCII string. */
2839
2840 static void
ppc_byte(ignore)2841 ppc_byte (ignore)
2842 int ignore ATTRIBUTE_UNUSED;
2843 {
2844 if (*input_line_pointer != '\"')
2845 {
2846 cons (1);
2847 return;
2848 }
2849
2850 /* Gather characters. A real double quote is doubled. Unusual
2851 characters are not permitted. */
2852 ++input_line_pointer;
2853 while (1)
2854 {
2855 char c;
2856
2857 c = *input_line_pointer++;
2858
2859 if (c == '\"')
2860 {
2861 if (*input_line_pointer != '\"')
2862 break;
2863 ++input_line_pointer;
2864 }
2865
2866 FRAG_APPEND_1_CHAR (c);
2867 }
2868
2869 demand_empty_rest_of_line ();
2870 }
2871
2872 #ifdef OBJ_XCOFF
2873
2874 /* XCOFF specific pseudo-op handling. */
2875
2876 /* This is set if we are creating a .stabx symbol, since we don't want
2877 to handle symbol suffixes for such symbols. */
2878 static bfd_boolean ppc_stab_symbol;
2879
2880 /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
2881 symbols in the .bss segment as though they were local common
2882 symbols, and uses a different smclas. The native Aix 4.3.3 assembler
2883 aligns .comm and .lcomm to 4 bytes. */
2884
2885 static void
ppc_comm(lcomm)2886 ppc_comm (lcomm)
2887 int lcomm;
2888 {
2889 asection *current_seg = now_seg;
2890 subsegT current_subseg = now_subseg;
2891 char *name;
2892 char endc;
2893 char *end_name;
2894 offsetT size;
2895 offsetT align;
2896 symbolS *lcomm_sym = NULL;
2897 symbolS *sym;
2898 char *pfrag;
2899
2900 name = input_line_pointer;
2901 endc = get_symbol_end ();
2902 end_name = input_line_pointer;
2903 *end_name = endc;
2904
2905 if (*input_line_pointer != ',')
2906 {
2907 as_bad (_("missing size"));
2908 ignore_rest_of_line ();
2909 return;
2910 }
2911 ++input_line_pointer;
2912
2913 size = get_absolute_expression ();
2914 if (size < 0)
2915 {
2916 as_bad (_("negative size"));
2917 ignore_rest_of_line ();
2918 return;
2919 }
2920
2921 if (! lcomm)
2922 {
2923 /* The third argument to .comm is the alignment. */
2924 if (*input_line_pointer != ',')
2925 align = 2;
2926 else
2927 {
2928 ++input_line_pointer;
2929 align = get_absolute_expression ();
2930 if (align <= 0)
2931 {
2932 as_warn (_("ignoring bad alignment"));
2933 align = 2;
2934 }
2935 }
2936 }
2937 else
2938 {
2939 char *lcomm_name;
2940 char lcomm_endc;
2941
2942 if (size <= 4)
2943 align = 2;
2944 else
2945 align = 3;
2946
2947 /* The third argument to .lcomm appears to be the real local
2948 common symbol to create. References to the symbol named in
2949 the first argument are turned into references to the third
2950 argument. */
2951 if (*input_line_pointer != ',')
2952 {
2953 as_bad (_("missing real symbol name"));
2954 ignore_rest_of_line ();
2955 return;
2956 }
2957 ++input_line_pointer;
2958
2959 lcomm_name = input_line_pointer;
2960 lcomm_endc = get_symbol_end ();
2961
2962 lcomm_sym = symbol_find_or_make (lcomm_name);
2963
2964 *input_line_pointer = lcomm_endc;
2965 }
2966
2967 *end_name = '\0';
2968 sym = symbol_find_or_make (name);
2969 *end_name = endc;
2970
2971 if (S_IS_DEFINED (sym)
2972 || S_GET_VALUE (sym) != 0)
2973 {
2974 as_bad (_("attempt to redefine symbol"));
2975 ignore_rest_of_line ();
2976 return;
2977 }
2978
2979 record_alignment (bss_section, align);
2980
2981 if (! lcomm
2982 || ! S_IS_DEFINED (lcomm_sym))
2983 {
2984 symbolS *def_sym;
2985 offsetT def_size;
2986
2987 if (! lcomm)
2988 {
2989 def_sym = sym;
2990 def_size = size;
2991 S_SET_EXTERNAL (sym);
2992 }
2993 else
2994 {
2995 symbol_get_tc (lcomm_sym)->output = 1;
2996 def_sym = lcomm_sym;
2997 def_size = 0;
2998 }
2999
3000 subseg_set (bss_section, 1);
3001 frag_align (align, 0, 0);
3002
3003 symbol_set_frag (def_sym, frag_now);
3004 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
3005 def_size, (char *) NULL);
3006 *pfrag = 0;
3007 S_SET_SEGMENT (def_sym, bss_section);
3008 symbol_get_tc (def_sym)->align = align;
3009 }
3010 else if (lcomm)
3011 {
3012 /* Align the size of lcomm_sym. */
3013 symbol_get_frag (lcomm_sym)->fr_offset =
3014 ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
3015 &~ ((1 << align) - 1));
3016 if (align > symbol_get_tc (lcomm_sym)->align)
3017 symbol_get_tc (lcomm_sym)->align = align;
3018 }
3019
3020 if (lcomm)
3021 {
3022 /* Make sym an offset from lcomm_sym. */
3023 S_SET_SEGMENT (sym, bss_section);
3024 symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
3025 S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
3026 symbol_get_frag (lcomm_sym)->fr_offset += size;
3027 }
3028
3029 subseg_set (current_seg, current_subseg);
3030
3031 demand_empty_rest_of_line ();
3032 }
3033
3034 /* The .csect pseudo-op. This switches us into a different
3035 subsegment. The first argument is a symbol whose value is the
3036 start of the .csect. In COFF, csect symbols get special aux
3037 entries defined by the x_csect field of union internal_auxent. The
3038 optional second argument is the alignment (the default is 2). */
3039
3040 static void
ppc_csect(ignore)3041 ppc_csect (ignore)
3042 int ignore ATTRIBUTE_UNUSED;
3043 {
3044 char *name;
3045 char endc;
3046 symbolS *sym;
3047 offsetT align;
3048
3049 name = input_line_pointer;
3050 endc = get_symbol_end ();
3051
3052 sym = symbol_find_or_make (name);
3053
3054 *input_line_pointer = endc;
3055
3056 if (S_GET_NAME (sym)[0] == '\0')
3057 {
3058 /* An unnamed csect is assumed to be [PR]. */
3059 symbol_get_tc (sym)->class = XMC_PR;
3060 }
3061
3062 align = 2;
3063 if (*input_line_pointer == ',')
3064 {
3065 ++input_line_pointer;
3066 align = get_absolute_expression ();
3067 }
3068
3069 ppc_change_csect (sym, align);
3070
3071 demand_empty_rest_of_line ();
3072 }
3073
3074 /* Change to a different csect. */
3075
3076 static void
ppc_change_csect(sym,align)3077 ppc_change_csect (sym, align)
3078 symbolS *sym;
3079 offsetT align;
3080 {
3081 if (S_IS_DEFINED (sym))
3082 subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
3083 else
3084 {
3085 symbolS **list_ptr;
3086 int after_toc;
3087 int hold_chunksize;
3088 symbolS *list;
3089 int is_code;
3090 segT sec;
3091
3092 /* This is a new csect. We need to look at the symbol class to
3093 figure out whether it should go in the text section or the
3094 data section. */
3095 after_toc = 0;
3096 is_code = 0;
3097 switch (symbol_get_tc (sym)->class)
3098 {
3099 case XMC_PR:
3100 case XMC_RO:
3101 case XMC_DB:
3102 case XMC_GL:
3103 case XMC_XO:
3104 case XMC_SV:
3105 case XMC_TI:
3106 case XMC_TB:
3107 S_SET_SEGMENT (sym, text_section);
3108 symbol_get_tc (sym)->subseg = ppc_text_subsegment;
3109 ++ppc_text_subsegment;
3110 list_ptr = &ppc_text_csects;
3111 is_code = 1;
3112 break;
3113 case XMC_RW:
3114 case XMC_TC0:
3115 case XMC_TC:
3116 case XMC_DS:
3117 case XMC_UA:
3118 case XMC_BS:
3119 case XMC_UC:
3120 if (ppc_toc_csect != NULL
3121 && (symbol_get_tc (ppc_toc_csect)->subseg + 1
3122 == ppc_data_subsegment))
3123 after_toc = 1;
3124 S_SET_SEGMENT (sym, data_section);
3125 symbol_get_tc (sym)->subseg = ppc_data_subsegment;
3126 ++ppc_data_subsegment;
3127 list_ptr = &ppc_data_csects;
3128 break;
3129 default:
3130 abort ();
3131 }
3132
3133 /* We set the obstack chunk size to a small value before
3134 changing subsegments, so that we don't use a lot of memory
3135 space for what may be a small section. */
3136 hold_chunksize = chunksize;
3137 chunksize = 64;
3138
3139 sec = subseg_new (segment_name (S_GET_SEGMENT (sym)),
3140 symbol_get_tc (sym)->subseg);
3141
3142 chunksize = hold_chunksize;
3143
3144 if (after_toc)
3145 ppc_after_toc_frag = frag_now;
3146
3147 record_alignment (sec, align);
3148 if (is_code)
3149 frag_align_code (align, 0);
3150 else
3151 frag_align (align, 0, 0);
3152
3153 symbol_set_frag (sym, frag_now);
3154 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3155
3156 symbol_get_tc (sym)->align = align;
3157 symbol_get_tc (sym)->output = 1;
3158 symbol_get_tc (sym)->within = sym;
3159
3160 for (list = *list_ptr;
3161 symbol_get_tc (list)->next != (symbolS *) NULL;
3162 list = symbol_get_tc (list)->next)
3163 ;
3164 symbol_get_tc (list)->next = sym;
3165
3166 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3167 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3168 &symbol_lastP);
3169 }
3170
3171 ppc_current_csect = sym;
3172 }
3173
3174 /* This function handles the .text and .data pseudo-ops. These
3175 pseudo-ops aren't really used by XCOFF; we implement them for the
3176 convenience of people who aren't used to XCOFF. */
3177
3178 static void
ppc_section(type)3179 ppc_section (type)
3180 int type;
3181 {
3182 const char *name;
3183 symbolS *sym;
3184
3185 if (type == 't')
3186 name = ".text[PR]";
3187 else if (type == 'd')
3188 name = ".data[RW]";
3189 else
3190 abort ();
3191
3192 sym = symbol_find_or_make (name);
3193
3194 ppc_change_csect (sym, 2);
3195
3196 demand_empty_rest_of_line ();
3197 }
3198
3199 /* This function handles the .section pseudo-op. This is mostly to
3200 give an error, since XCOFF only supports .text, .data and .bss, but
3201 we do permit the user to name the text or data section. */
3202
3203 static void
ppc_named_section(ignore)3204 ppc_named_section (ignore)
3205 int ignore ATTRIBUTE_UNUSED;
3206 {
3207 char *user_name;
3208 const char *real_name;
3209 char c;
3210 symbolS *sym;
3211
3212 user_name = input_line_pointer;
3213 c = get_symbol_end ();
3214
3215 if (strcmp (user_name, ".text") == 0)
3216 real_name = ".text[PR]";
3217 else if (strcmp (user_name, ".data") == 0)
3218 real_name = ".data[RW]";
3219 else
3220 {
3221 as_bad (_("The XCOFF file format does not support arbitrary sections"));
3222 *input_line_pointer = c;
3223 ignore_rest_of_line ();
3224 return;
3225 }
3226
3227 *input_line_pointer = c;
3228
3229 sym = symbol_find_or_make (real_name);
3230
3231 ppc_change_csect (sym, 2);
3232
3233 demand_empty_rest_of_line ();
3234 }
3235
3236 /* The .extern pseudo-op. We create an undefined symbol. */
3237
3238 static void
ppc_extern(ignore)3239 ppc_extern (ignore)
3240 int ignore ATTRIBUTE_UNUSED;
3241 {
3242 char *name;
3243 char endc;
3244
3245 name = input_line_pointer;
3246 endc = get_symbol_end ();
3247
3248 (void) symbol_find_or_make (name);
3249
3250 *input_line_pointer = endc;
3251
3252 demand_empty_rest_of_line ();
3253 }
3254
3255 /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
3256
3257 static void
ppc_lglobl(ignore)3258 ppc_lglobl (ignore)
3259 int ignore ATTRIBUTE_UNUSED;
3260 {
3261 char *name;
3262 char endc;
3263 symbolS *sym;
3264
3265 name = input_line_pointer;
3266 endc = get_symbol_end ();
3267
3268 sym = symbol_find_or_make (name);
3269
3270 *input_line_pointer = endc;
3271
3272 symbol_get_tc (sym)->output = 1;
3273
3274 demand_empty_rest_of_line ();
3275 }
3276
3277 /* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
3278 although I don't know why it bothers. */
3279
3280 static void
ppc_rename(ignore)3281 ppc_rename (ignore)
3282 int ignore ATTRIBUTE_UNUSED;
3283 {
3284 char *name;
3285 char endc;
3286 symbolS *sym;
3287 int len;
3288
3289 name = input_line_pointer;
3290 endc = get_symbol_end ();
3291
3292 sym = symbol_find_or_make (name);
3293
3294 *input_line_pointer = endc;
3295
3296 if (*input_line_pointer != ',')
3297 {
3298 as_bad (_("missing rename string"));
3299 ignore_rest_of_line ();
3300 return;
3301 }
3302 ++input_line_pointer;
3303
3304 symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
3305
3306 demand_empty_rest_of_line ();
3307 }
3308
3309 /* The .stabx pseudo-op. This is similar to a normal .stabs
3310 pseudo-op, but slightly different. A sample is
3311 .stabx "main:F-1",.main,142,0
3312 The first argument is the symbol name to create. The second is the
3313 value, and the third is the storage class. The fourth seems to be
3314 always zero, and I am assuming it is the type. */
3315
3316 static void
ppc_stabx(ignore)3317 ppc_stabx (ignore)
3318 int ignore ATTRIBUTE_UNUSED;
3319 {
3320 char *name;
3321 int len;
3322 symbolS *sym;
3323 expressionS exp;
3324
3325 name = demand_copy_C_string (&len);
3326
3327 if (*input_line_pointer != ',')
3328 {
3329 as_bad (_("missing value"));
3330 return;
3331 }
3332 ++input_line_pointer;
3333
3334 ppc_stab_symbol = TRUE;
3335 sym = symbol_make (name);
3336 ppc_stab_symbol = FALSE;
3337
3338 symbol_get_tc (sym)->real_name = name;
3339
3340 (void) expression (&exp);
3341
3342 switch (exp.X_op)
3343 {
3344 case O_illegal:
3345 case O_absent:
3346 case O_big:
3347 as_bad (_("illegal .stabx expression; zero assumed"));
3348 exp.X_add_number = 0;
3349 /* Fall through. */
3350 case O_constant:
3351 S_SET_VALUE (sym, (valueT) exp.X_add_number);
3352 symbol_set_frag (sym, &zero_address_frag);
3353 break;
3354
3355 case O_symbol:
3356 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
3357 symbol_set_value_expression (sym, &exp);
3358 else
3359 {
3360 S_SET_VALUE (sym,
3361 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
3362 symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
3363 }
3364 break;
3365
3366 default:
3367 /* The value is some complex expression. This will probably
3368 fail at some later point, but this is probably the right
3369 thing to do here. */
3370 symbol_set_value_expression (sym, &exp);
3371 break;
3372 }
3373
3374 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3375 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3376
3377 if (*input_line_pointer != ',')
3378 {
3379 as_bad (_("missing class"));
3380 return;
3381 }
3382 ++input_line_pointer;
3383
3384 S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
3385
3386 if (*input_line_pointer != ',')
3387 {
3388 as_bad (_("missing type"));
3389 return;
3390 }
3391 ++input_line_pointer;
3392
3393 S_SET_DATA_TYPE (sym, get_absolute_expression ());
3394
3395 symbol_get_tc (sym)->output = 1;
3396
3397 if (S_GET_STORAGE_CLASS (sym) == C_STSYM) {
3398
3399 symbol_get_tc (sym)->within = ppc_current_block;
3400
3401 /* In this case :
3402
3403 .bs name
3404 .stabx "z",arrays_,133,0
3405 .es
3406
3407 .comm arrays_,13768,3
3408
3409 resolve_symbol_value will copy the exp's "within" into sym's when the
3410 offset is 0. Since this seems to be corner case problem,
3411 only do the correction for storage class C_STSYM. A better solution
3412 would be to have the tc field updated in ppc_symbol_new_hook. */
3413
3414 if (exp.X_op == O_symbol)
3415 {
3416 symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block;
3417 }
3418 }
3419
3420 if (exp.X_op != O_symbol
3421 || ! S_IS_EXTERNAL (exp.X_add_symbol)
3422 || S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
3423 ppc_frob_label (sym);
3424 else
3425 {
3426 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3427 symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
3428 if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
3429 symbol_get_tc (ppc_current_csect)->within = sym;
3430 }
3431
3432 demand_empty_rest_of_line ();
3433 }
3434
3435 /* The .function pseudo-op. This takes several arguments. The first
3436 argument seems to be the external name of the symbol. The second
3437 argument seems to be the label for the start of the function. gcc
3438 uses the same name for both. I have no idea what the third and
3439 fourth arguments are meant to be. The optional fifth argument is
3440 an expression for the size of the function. In COFF this symbol
3441 gets an aux entry like that used for a csect. */
3442
3443 static void
ppc_function(ignore)3444 ppc_function (ignore)
3445 int ignore ATTRIBUTE_UNUSED;
3446 {
3447 char *name;
3448 char endc;
3449 char *s;
3450 symbolS *ext_sym;
3451 symbolS *lab_sym;
3452
3453 name = input_line_pointer;
3454 endc = get_symbol_end ();
3455
3456 /* Ignore any [PR] suffix. */
3457 name = ppc_canonicalize_symbol_name (name);
3458 s = strchr (name, '[');
3459 if (s != (char *) NULL
3460 && strcmp (s + 1, "PR]") == 0)
3461 *s = '\0';
3462
3463 ext_sym = symbol_find_or_make (name);
3464
3465 *input_line_pointer = endc;
3466
3467 if (*input_line_pointer != ',')
3468 {
3469 as_bad (_("missing symbol name"));
3470 ignore_rest_of_line ();
3471 return;
3472 }
3473 ++input_line_pointer;
3474
3475 name = input_line_pointer;
3476 endc = get_symbol_end ();
3477
3478 lab_sym = symbol_find_or_make (name);
3479
3480 *input_line_pointer = endc;
3481
3482 if (ext_sym != lab_sym)
3483 {
3484 expressionS exp;
3485
3486 exp.X_op = O_symbol;
3487 exp.X_add_symbol = lab_sym;
3488 exp.X_op_symbol = NULL;
3489 exp.X_add_number = 0;
3490 exp.X_unsigned = 0;
3491 symbol_set_value_expression (ext_sym, &exp);
3492 }
3493
3494 if (symbol_get_tc (ext_sym)->class == -1)
3495 symbol_get_tc (ext_sym)->class = XMC_PR;
3496 symbol_get_tc (ext_sym)->output = 1;
3497
3498 if (*input_line_pointer == ',')
3499 {
3500 expressionS ignore;
3501
3502 /* Ignore the third argument. */
3503 ++input_line_pointer;
3504 expression (&ignore);
3505 if (*input_line_pointer == ',')
3506 {
3507 /* Ignore the fourth argument. */
3508 ++input_line_pointer;
3509 expression (&ignore);
3510 if (*input_line_pointer == ',')
3511 {
3512 /* The fifth argument is the function size. */
3513 ++input_line_pointer;
3514 symbol_get_tc (ext_sym)->size = symbol_new ("L0\001",
3515 absolute_section,
3516 (valueT) 0,
3517 &zero_address_frag);
3518 pseudo_set (symbol_get_tc (ext_sym)->size);
3519 }
3520 }
3521 }
3522
3523 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
3524 SF_SET_FUNCTION (ext_sym);
3525 SF_SET_PROCESS (ext_sym);
3526 coff_add_linesym (ext_sym);
3527
3528 demand_empty_rest_of_line ();
3529 }
3530
3531 /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
3532 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
3533 with the correct line number */
3534
3535 static symbolS *saved_bi_sym = 0;
3536
3537 static void
ppc_bf(ignore)3538 ppc_bf (ignore)
3539 int ignore ATTRIBUTE_UNUSED;
3540 {
3541 symbolS *sym;
3542
3543 sym = symbol_make (".bf");
3544 S_SET_SEGMENT (sym, text_section);
3545 symbol_set_frag (sym, frag_now);
3546 S_SET_VALUE (sym, frag_now_fix ());
3547 S_SET_STORAGE_CLASS (sym, C_FCN);
3548
3549 coff_line_base = get_absolute_expression ();
3550
3551 S_SET_NUMBER_AUXILIARY (sym, 1);
3552 SA_SET_SYM_LNNO (sym, coff_line_base);
3553
3554 /* Line number for bi. */
3555 if (saved_bi_sym)
3556 {
3557 S_SET_VALUE (saved_bi_sym, coff_n_line_nos);
3558 saved_bi_sym = 0;
3559 }
3560
3561
3562 symbol_get_tc (sym)->output = 1;
3563
3564 ppc_frob_label (sym);
3565
3566 demand_empty_rest_of_line ();
3567 }
3568
3569 /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
3570 ".ef", except that the line number is absolute, not relative to the
3571 most recent ".bf" symbol. */
3572
3573 static void
ppc_ef(ignore)3574 ppc_ef (ignore)
3575 int ignore ATTRIBUTE_UNUSED;
3576 {
3577 symbolS *sym;
3578
3579 sym = symbol_make (".ef");
3580 S_SET_SEGMENT (sym, text_section);
3581 symbol_set_frag (sym, frag_now);
3582 S_SET_VALUE (sym, frag_now_fix ());
3583 S_SET_STORAGE_CLASS (sym, C_FCN);
3584 S_SET_NUMBER_AUXILIARY (sym, 1);
3585 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3586 symbol_get_tc (sym)->output = 1;
3587
3588 ppc_frob_label (sym);
3589
3590 demand_empty_rest_of_line ();
3591 }
3592
3593 /* The .bi and .ei pseudo-ops. These take a string argument and
3594 generates a C_BINCL or C_EINCL symbol, which goes at the start of
3595 the symbol list. The value of .bi will be know when the next .bf
3596 is encountered. */
3597
3598 static void
ppc_biei(ei)3599 ppc_biei (ei)
3600 int ei;
3601 {
3602 static symbolS *last_biei;
3603
3604 char *name;
3605 int len;
3606 symbolS *sym;
3607 symbolS *look;
3608
3609 name = demand_copy_C_string (&len);
3610
3611 /* The value of these symbols is actually file offset. Here we set
3612 the value to the index into the line number entries. In
3613 ppc_frob_symbols we set the fix_line field, which will cause BFD
3614 to do the right thing. */
3615
3616 sym = symbol_make (name);
3617 /* obj-coff.c currently only handles line numbers correctly in the
3618 .text section. */
3619 S_SET_SEGMENT (sym, text_section);
3620 S_SET_VALUE (sym, coff_n_line_nos);
3621 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3622
3623 S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
3624 symbol_get_tc (sym)->output = 1;
3625
3626 /* Save bi. */
3627 if (ei)
3628 saved_bi_sym = 0;
3629 else
3630 saved_bi_sym = sym;
3631
3632 for (look = last_biei ? last_biei : symbol_rootP;
3633 (look != (symbolS *) NULL
3634 && (S_GET_STORAGE_CLASS (look) == C_FILE
3635 || S_GET_STORAGE_CLASS (look) == C_BINCL
3636 || S_GET_STORAGE_CLASS (look) == C_EINCL));
3637 look = symbol_next (look))
3638 ;
3639 if (look != (symbolS *) NULL)
3640 {
3641 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3642 symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
3643 last_biei = sym;
3644 }
3645
3646 demand_empty_rest_of_line ();
3647 }
3648
3649 /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
3650 There is one argument, which is a csect symbol. The value of the
3651 .bs symbol is the index of this csect symbol. */
3652
3653 static void
ppc_bs(ignore)3654 ppc_bs (ignore)
3655 int ignore ATTRIBUTE_UNUSED;
3656 {
3657 char *name;
3658 char endc;
3659 symbolS *csect;
3660 symbolS *sym;
3661
3662 if (ppc_current_block != NULL)
3663 as_bad (_("nested .bs blocks"));
3664
3665 name = input_line_pointer;
3666 endc = get_symbol_end ();
3667
3668 csect = symbol_find_or_make (name);
3669
3670 *input_line_pointer = endc;
3671
3672 sym = symbol_make (".bs");
3673 S_SET_SEGMENT (sym, now_seg);
3674 S_SET_STORAGE_CLASS (sym, C_BSTAT);
3675 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3676 symbol_get_tc (sym)->output = 1;
3677
3678 symbol_get_tc (sym)->within = csect;
3679
3680 ppc_frob_label (sym);
3681
3682 ppc_current_block = sym;
3683
3684 demand_empty_rest_of_line ();
3685 }
3686
3687 /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
3688
3689 static void
ppc_es(ignore)3690 ppc_es (ignore)
3691 int ignore ATTRIBUTE_UNUSED;
3692 {
3693 symbolS *sym;
3694
3695 if (ppc_current_block == NULL)
3696 as_bad (_(".es without preceding .bs"));
3697
3698 sym = symbol_make (".es");
3699 S_SET_SEGMENT (sym, now_seg);
3700 S_SET_STORAGE_CLASS (sym, C_ESTAT);
3701 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3702 symbol_get_tc (sym)->output = 1;
3703
3704 ppc_frob_label (sym);
3705
3706 ppc_current_block = NULL;
3707
3708 demand_empty_rest_of_line ();
3709 }
3710
3711 /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
3712 line number. */
3713
3714 static void
ppc_bb(ignore)3715 ppc_bb (ignore)
3716 int ignore ATTRIBUTE_UNUSED;
3717 {
3718 symbolS *sym;
3719
3720 sym = symbol_make (".bb");
3721 S_SET_SEGMENT (sym, text_section);
3722 symbol_set_frag (sym, frag_now);
3723 S_SET_VALUE (sym, frag_now_fix ());
3724 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3725
3726 S_SET_NUMBER_AUXILIARY (sym, 1);
3727 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3728
3729 symbol_get_tc (sym)->output = 1;
3730
3731 SF_SET_PROCESS (sym);
3732
3733 ppc_frob_label (sym);
3734
3735 demand_empty_rest_of_line ();
3736 }
3737
3738 /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
3739 line number. */
3740
3741 static void
ppc_eb(ignore)3742 ppc_eb (ignore)
3743 int ignore ATTRIBUTE_UNUSED;
3744 {
3745 symbolS *sym;
3746
3747 sym = symbol_make (".eb");
3748 S_SET_SEGMENT (sym, text_section);
3749 symbol_set_frag (sym, frag_now);
3750 S_SET_VALUE (sym, frag_now_fix ());
3751 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3752 S_SET_NUMBER_AUXILIARY (sym, 1);
3753 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3754 symbol_get_tc (sym)->output = 1;
3755
3756 SF_SET_PROCESS (sym);
3757
3758 ppc_frob_label (sym);
3759
3760 demand_empty_rest_of_line ();
3761 }
3762
3763 /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
3764 specified name. */
3765
3766 static void
ppc_bc(ignore)3767 ppc_bc (ignore)
3768 int ignore ATTRIBUTE_UNUSED;
3769 {
3770 char *name;
3771 int len;
3772 symbolS *sym;
3773
3774 name = demand_copy_C_string (&len);
3775 sym = symbol_make (name);
3776 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3777 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3778 S_SET_STORAGE_CLASS (sym, C_BCOMM);
3779 S_SET_VALUE (sym, 0);
3780 symbol_get_tc (sym)->output = 1;
3781
3782 ppc_frob_label (sym);
3783
3784 demand_empty_rest_of_line ();
3785 }
3786
3787 /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
3788
3789 static void
ppc_ec(ignore)3790 ppc_ec (ignore)
3791 int ignore ATTRIBUTE_UNUSED;
3792 {
3793 symbolS *sym;
3794
3795 sym = symbol_make (".ec");
3796 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3797 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3798 S_SET_STORAGE_CLASS (sym, C_ECOMM);
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 .toc pseudo-op. Switch to the .toc subsegment. */
3808
3809 static void
ppc_toc(ignore)3810 ppc_toc (ignore)
3811 int ignore ATTRIBUTE_UNUSED;
3812 {
3813 if (ppc_toc_csect != (symbolS *) NULL)
3814 subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
3815 else
3816 {
3817 subsegT subseg;
3818 symbolS *sym;
3819 symbolS *list;
3820
3821 subseg = ppc_data_subsegment;
3822 ++ppc_data_subsegment;
3823
3824 subseg_new (segment_name (data_section), subseg);
3825 ppc_toc_frag = frag_now;
3826
3827 sym = symbol_find_or_make ("TOC[TC0]");
3828 symbol_set_frag (sym, frag_now);
3829 S_SET_SEGMENT (sym, data_section);
3830 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3831 symbol_get_tc (sym)->subseg = subseg;
3832 symbol_get_tc (sym)->output = 1;
3833 symbol_get_tc (sym)->within = sym;
3834
3835 ppc_toc_csect = sym;
3836
3837 for (list = ppc_data_csects;
3838 symbol_get_tc (list)->next != (symbolS *) NULL;
3839 list = symbol_get_tc (list)->next)
3840 ;
3841 symbol_get_tc (list)->next = sym;
3842
3843 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3844 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3845 &symbol_lastP);
3846 }
3847
3848 ppc_current_csect = ppc_toc_csect;
3849
3850 demand_empty_rest_of_line ();
3851 }
3852
3853 /* The AIX assembler automatically aligns the operands of a .long or
3854 .short pseudo-op, and we want to be compatible. */
3855
3856 static void
ppc_xcoff_cons(log_size)3857 ppc_xcoff_cons (log_size)
3858 int log_size;
3859 {
3860 frag_align (log_size, 0, 0);
3861 record_alignment (now_seg, log_size);
3862 cons (1 << log_size);
3863 }
3864
3865 static void
ppc_vbyte(dummy)3866 ppc_vbyte (dummy)
3867 int dummy ATTRIBUTE_UNUSED;
3868 {
3869 expressionS exp;
3870 int byte_count;
3871
3872 (void) expression (&exp);
3873
3874 if (exp.X_op != O_constant)
3875 {
3876 as_bad (_("non-constant byte count"));
3877 return;
3878 }
3879
3880 byte_count = exp.X_add_number;
3881
3882 if (*input_line_pointer != ',')
3883 {
3884 as_bad (_("missing value"));
3885 return;
3886 }
3887
3888 ++input_line_pointer;
3889 cons (byte_count);
3890 }
3891
3892 #endif /* OBJ_XCOFF */
3893 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
3894
3895 /* The .tc pseudo-op. This is used when generating either XCOFF or
3896 ELF. This takes two or more arguments.
3897
3898 When generating XCOFF output, the first argument is the name to
3899 give to this location in the toc; this will be a symbol with class
3900 TC. The rest of the arguments are N-byte values to actually put at
3901 this location in the TOC; often there is just one more argument, a
3902 relocatable symbol reference. The size of the value to store
3903 depends on target word size. A 32-bit target uses 4-byte values, a
3904 64-bit target uses 8-byte values.
3905
3906 When not generating XCOFF output, the arguments are the same, but
3907 the first argument is simply ignored. */
3908
3909 static void
ppc_tc(ignore)3910 ppc_tc (ignore)
3911 int ignore ATTRIBUTE_UNUSED;
3912 {
3913 #ifdef OBJ_XCOFF
3914
3915 /* Define the TOC symbol name. */
3916 {
3917 char *name;
3918 char endc;
3919 symbolS *sym;
3920
3921 if (ppc_toc_csect == (symbolS *) NULL
3922 || ppc_toc_csect != ppc_current_csect)
3923 {
3924 as_bad (_(".tc not in .toc section"));
3925 ignore_rest_of_line ();
3926 return;
3927 }
3928
3929 name = input_line_pointer;
3930 endc = get_symbol_end ();
3931
3932 sym = symbol_find_or_make (name);
3933
3934 *input_line_pointer = endc;
3935
3936 if (S_IS_DEFINED (sym))
3937 {
3938 symbolS *label;
3939
3940 label = symbol_get_tc (ppc_current_csect)->within;
3941 if (symbol_get_tc (label)->class != XMC_TC0)
3942 {
3943 as_bad (_(".tc with no label"));
3944 ignore_rest_of_line ();
3945 return;
3946 }
3947
3948 S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
3949 symbol_set_frag (label, symbol_get_frag (sym));
3950 S_SET_VALUE (label, S_GET_VALUE (sym));
3951
3952 while (! is_end_of_line[(unsigned char) *input_line_pointer])
3953 ++input_line_pointer;
3954
3955 return;
3956 }
3957
3958 S_SET_SEGMENT (sym, now_seg);
3959 symbol_set_frag (sym, frag_now);
3960 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3961 symbol_get_tc (sym)->class = XMC_TC;
3962 symbol_get_tc (sym)->output = 1;
3963
3964 ppc_frob_label (sym);
3965 }
3966
3967 #endif /* OBJ_XCOFF */
3968 #ifdef OBJ_ELF
3969 int align;
3970
3971 /* Skip the TOC symbol name. */
3972 while (is_part_of_name (*input_line_pointer)
3973 || *input_line_pointer == '['
3974 || *input_line_pointer == ']'
3975 || *input_line_pointer == '{'
3976 || *input_line_pointer == '}')
3977 ++input_line_pointer;
3978
3979 /* Align to a four/eight byte boundary. */
3980 align = ppc_obj64 ? 3 : 2;
3981 frag_align (align, 0, 0);
3982 record_alignment (now_seg, align);
3983 #endif /* OBJ_ELF */
3984
3985 if (*input_line_pointer != ',')
3986 demand_empty_rest_of_line ();
3987 else
3988 {
3989 ++input_line_pointer;
3990 cons (ppc_obj64 ? 8 : 4);
3991 }
3992 }
3993
3994 /* Pseudo-op .machine. */
3995
3996 static void
ppc_machine(ignore)3997 ppc_machine (ignore)
3998 int ignore ATTRIBUTE_UNUSED;
3999 {
4000 char *cpu_string;
4001 #define MAX_HISTORY 100
4002 static unsigned long *cpu_history;
4003 static int curr_hist;
4004
4005 SKIP_WHITESPACE ();
4006
4007 if (*input_line_pointer == '"')
4008 {
4009 int len;
4010 cpu_string = demand_copy_C_string (&len);
4011 }
4012 else
4013 {
4014 char c;
4015 cpu_string = input_line_pointer;
4016 c = get_symbol_end ();
4017 cpu_string = xstrdup (cpu_string);
4018 *input_line_pointer = c;
4019 }
4020
4021 if (cpu_string != NULL)
4022 {
4023 unsigned long old_cpu = ppc_cpu;
4024 char *p;
4025
4026 for (p = cpu_string; *p != 0; p++)
4027 *p = TOLOWER (*p);
4028
4029 if (strcmp (cpu_string, "push") == 0)
4030 {
4031 if (cpu_history == NULL)
4032 cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history));
4033
4034 if (curr_hist >= MAX_HISTORY)
4035 as_bad (_(".machine stack overflow"));
4036 else
4037 cpu_history[curr_hist++] = ppc_cpu;
4038 }
4039 else if (strcmp (cpu_string, "pop") == 0)
4040 {
4041 if (curr_hist <= 0)
4042 as_bad (_(".machine stack underflow"));
4043 else
4044 ppc_cpu = cpu_history[--curr_hist];
4045 }
4046 else if (parse_cpu (cpu_string))
4047 ;
4048 else
4049 as_bad (_("invalid machine `%s'"), cpu_string);
4050
4051 if (ppc_cpu != old_cpu)
4052 ppc_setup_opcodes ();
4053 }
4054
4055 demand_empty_rest_of_line ();
4056 }
4057
4058 /* See whether a symbol is in the TOC section. */
4059
4060 static int
ppc_is_toc_sym(sym)4061 ppc_is_toc_sym (sym)
4062 symbolS *sym;
4063 {
4064 #ifdef OBJ_XCOFF
4065 return symbol_get_tc (sym)->class == XMC_TC;
4066 #endif
4067 #ifdef OBJ_ELF
4068 const char *sname = segment_name (S_GET_SEGMENT (sym));
4069 if (ppc_obj64)
4070 return strcmp (sname, ".toc") == 0;
4071 else
4072 return strcmp (sname, ".got") == 0;
4073 #endif
4074 }
4075 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
4076
4077 #ifdef TE_PE
4078
4079 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
4080
4081 /* Set the current section. */
4082 static void
ppc_set_current_section(new)4083 ppc_set_current_section (new)
4084 segT new;
4085 {
4086 ppc_previous_section = ppc_current_section;
4087 ppc_current_section = new;
4088 }
4089
4090 /* pseudo-op: .previous
4091 behaviour: toggles the current section with the previous section.
4092 errors: None
4093 warnings: "No previous section" */
4094
4095 static void
ppc_previous(ignore)4096 ppc_previous (ignore)
4097 int ignore ATTRIBUTE_UNUSED;
4098 {
4099 symbolS *tmp;
4100
4101 if (ppc_previous_section == NULL)
4102 {
4103 as_warn (_("No previous section to return to. Directive ignored."));
4104 return;
4105 }
4106
4107 subseg_set (ppc_previous_section, 0);
4108
4109 ppc_set_current_section (ppc_previous_section);
4110 }
4111
4112 /* pseudo-op: .pdata
4113 behaviour: predefined read only data section
4114 double word aligned
4115 errors: None
4116 warnings: None
4117 initial: .section .pdata "adr3"
4118 a - don't know -- maybe a misprint
4119 d - initialized data
4120 r - readable
4121 3 - double word aligned (that would be 4 byte boundary)
4122
4123 commentary:
4124 Tag index tables (also known as the function table) for exception
4125 handling, debugging, etc. */
4126
4127 static void
ppc_pdata(ignore)4128 ppc_pdata (ignore)
4129 int ignore ATTRIBUTE_UNUSED;
4130 {
4131 if (pdata_section == 0)
4132 {
4133 pdata_section = subseg_new (".pdata", 0);
4134
4135 bfd_set_section_flags (stdoutput, pdata_section,
4136 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4137 | SEC_READONLY | SEC_DATA ));
4138
4139 bfd_set_section_alignment (stdoutput, pdata_section, 2);
4140 }
4141 else
4142 {
4143 pdata_section = subseg_new (".pdata", 0);
4144 }
4145 ppc_set_current_section (pdata_section);
4146 }
4147
4148 /* pseudo-op: .ydata
4149 behaviour: predefined read only data section
4150 double word aligned
4151 errors: None
4152 warnings: None
4153 initial: .section .ydata "drw3"
4154 a - don't know -- maybe a misprint
4155 d - initialized data
4156 r - readable
4157 3 - double word aligned (that would be 4 byte boundary)
4158 commentary:
4159 Tag tables (also known as the scope table) for exception handling,
4160 debugging, etc. */
4161
4162 static void
ppc_ydata(ignore)4163 ppc_ydata (ignore)
4164 int ignore ATTRIBUTE_UNUSED;
4165 {
4166 if (ydata_section == 0)
4167 {
4168 ydata_section = subseg_new (".ydata", 0);
4169 bfd_set_section_flags (stdoutput, ydata_section,
4170 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4171 | SEC_READONLY | SEC_DATA ));
4172
4173 bfd_set_section_alignment (stdoutput, ydata_section, 3);
4174 }
4175 else
4176 {
4177 ydata_section = subseg_new (".ydata", 0);
4178 }
4179 ppc_set_current_section (ydata_section);
4180 }
4181
4182 /* pseudo-op: .reldata
4183 behaviour: predefined read write data section
4184 double word aligned (4-byte)
4185 FIXME: relocation is applied to it
4186 FIXME: what's the difference between this and .data?
4187 errors: None
4188 warnings: None
4189 initial: .section .reldata "drw3"
4190 d - initialized data
4191 r - readable
4192 w - writeable
4193 3 - double word aligned (that would be 8 byte boundary)
4194
4195 commentary:
4196 Like .data, but intended to hold data subject to relocation, such as
4197 function descriptors, etc. */
4198
4199 static void
ppc_reldata(ignore)4200 ppc_reldata (ignore)
4201 int ignore ATTRIBUTE_UNUSED;
4202 {
4203 if (reldata_section == 0)
4204 {
4205 reldata_section = subseg_new (".reldata", 0);
4206
4207 bfd_set_section_flags (stdoutput, reldata_section,
4208 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4209 | SEC_DATA));
4210
4211 bfd_set_section_alignment (stdoutput, reldata_section, 2);
4212 }
4213 else
4214 {
4215 reldata_section = subseg_new (".reldata", 0);
4216 }
4217 ppc_set_current_section (reldata_section);
4218 }
4219
4220 /* pseudo-op: .rdata
4221 behaviour: predefined read only data section
4222 double word aligned
4223 errors: None
4224 warnings: None
4225 initial: .section .rdata "dr3"
4226 d - initialized data
4227 r - readable
4228 3 - double word aligned (that would be 4 byte boundary) */
4229
4230 static void
ppc_rdata(ignore)4231 ppc_rdata (ignore)
4232 int ignore ATTRIBUTE_UNUSED;
4233 {
4234 if (rdata_section == 0)
4235 {
4236 rdata_section = subseg_new (".rdata", 0);
4237 bfd_set_section_flags (stdoutput, rdata_section,
4238 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4239 | SEC_READONLY | SEC_DATA ));
4240
4241 bfd_set_section_alignment (stdoutput, rdata_section, 2);
4242 }
4243 else
4244 {
4245 rdata_section = subseg_new (".rdata", 0);
4246 }
4247 ppc_set_current_section (rdata_section);
4248 }
4249
4250 /* pseudo-op: .ualong
4251 behaviour: much like .int, with the exception that no alignment is
4252 performed.
4253 FIXME: test the alignment statement
4254 errors: None
4255 warnings: None */
4256
4257 static void
ppc_ualong(ignore)4258 ppc_ualong (ignore)
4259 int ignore ATTRIBUTE_UNUSED;
4260 {
4261 /* Try for long. */
4262 cons (4);
4263 }
4264
4265 /* pseudo-op: .znop <symbol name>
4266 behaviour: Issue a nop instruction
4267 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
4268 the supplied symbol name.
4269 errors: None
4270 warnings: Missing symbol name */
4271
4272 static void
ppc_znop(ignore)4273 ppc_znop (ignore)
4274 int ignore ATTRIBUTE_UNUSED;
4275 {
4276 unsigned long insn;
4277 const struct powerpc_opcode *opcode;
4278 expressionS ex;
4279 char *f;
4280 symbolS *sym;
4281 char *symbol_name;
4282 char c;
4283 char *name;
4284 unsigned int exp;
4285 flagword flags;
4286 asection *sec;
4287
4288 /* Strip out the symbol name. */
4289 symbol_name = input_line_pointer;
4290 c = get_symbol_end ();
4291
4292 name = xmalloc (input_line_pointer - symbol_name + 1);
4293 strcpy (name, symbol_name);
4294
4295 sym = symbol_find_or_make (name);
4296
4297 *input_line_pointer = c;
4298
4299 SKIP_WHITESPACE ();
4300
4301 /* Look up the opcode in the hash table. */
4302 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop");
4303
4304 /* Stick in the nop. */
4305 insn = opcode->opcode;
4306
4307 /* Write out the instruction. */
4308 f = frag_more (4);
4309 md_number_to_chars (f, insn, 4);
4310 fix_new (frag_now,
4311 f - frag_now->fr_literal,
4312 4,
4313 sym,
4314 0,
4315 0,
4316 BFD_RELOC_16_GOT_PCREL);
4317
4318 }
4319
4320 /* pseudo-op:
4321 behaviour:
4322 errors:
4323 warnings: */
4324
4325 static void
ppc_pe_comm(lcomm)4326 ppc_pe_comm (lcomm)
4327 int lcomm;
4328 {
4329 register char *name;
4330 register char c;
4331 register char *p;
4332 offsetT temp;
4333 register symbolS *symbolP;
4334 offsetT align;
4335
4336 name = input_line_pointer;
4337 c = get_symbol_end ();
4338
4339 /* just after name is now '\0'. */
4340 p = input_line_pointer;
4341 *p = c;
4342 SKIP_WHITESPACE ();
4343 if (*input_line_pointer != ',')
4344 {
4345 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
4346 ignore_rest_of_line ();
4347 return;
4348 }
4349
4350 input_line_pointer++; /* skip ',' */
4351 if ((temp = get_absolute_expression ()) < 0)
4352 {
4353 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
4354 ignore_rest_of_line ();
4355 return;
4356 }
4357
4358 if (! lcomm)
4359 {
4360 /* The third argument to .comm is the alignment. */
4361 if (*input_line_pointer != ',')
4362 align = 3;
4363 else
4364 {
4365 ++input_line_pointer;
4366 align = get_absolute_expression ();
4367 if (align <= 0)
4368 {
4369 as_warn (_("ignoring bad alignment"));
4370 align = 3;
4371 }
4372 }
4373 }
4374
4375 *p = 0;
4376 symbolP = symbol_find_or_make (name);
4377
4378 *p = c;
4379 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
4380 {
4381 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
4382 S_GET_NAME (symbolP));
4383 ignore_rest_of_line ();
4384 return;
4385 }
4386
4387 if (S_GET_VALUE (symbolP))
4388 {
4389 if (S_GET_VALUE (symbolP) != (valueT) temp)
4390 as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
4391 S_GET_NAME (symbolP),
4392 (long) S_GET_VALUE (symbolP),
4393 (long) temp);
4394 }
4395 else
4396 {
4397 S_SET_VALUE (symbolP, (valueT) temp);
4398 S_SET_EXTERNAL (symbolP);
4399 }
4400
4401 demand_empty_rest_of_line ();
4402 }
4403
4404 /*
4405 * implement the .section pseudo op:
4406 * .section name {, "flags"}
4407 * ^ ^
4408 * | +--- optional flags: 'b' for bss
4409 * | 'i' for info
4410 * +-- section name 'l' for lib
4411 * 'n' for noload
4412 * 'o' for over
4413 * 'w' for data
4414 * 'd' (apparently m88k for data)
4415 * 'x' for text
4416 * But if the argument is not a quoted string, treat it as a
4417 * subsegment number.
4418 *
4419 * FIXME: this is a copy of the section processing from obj-coff.c, with
4420 * additions/changes for the moto-pas assembler support. There are three
4421 * categories:
4422 *
4423 * FIXME: I just noticed this. This doesn't work at all really. It it
4424 * setting bits that bfd probably neither understands or uses. The
4425 * correct approach (?) will have to incorporate extra fields attached
4426 * to the section to hold the system specific stuff. (krk)
4427 *
4428 * Section Contents:
4429 * 'a' - unknown - referred to in documentation, but no definition supplied
4430 * 'c' - section has code
4431 * 'd' - section has initialized data
4432 * 'u' - section has uninitialized data
4433 * 'i' - section contains directives (info)
4434 * 'n' - section can be discarded
4435 * 'R' - remove section at link time
4436 *
4437 * Section Protection:
4438 * 'r' - section is readable
4439 * 'w' - section is writeable
4440 * 'x' - section is executable
4441 * 's' - section is sharable
4442 *
4443 * Section Alignment:
4444 * '0' - align to byte boundary
4445 * '1' - align to halfword undary
4446 * '2' - align to word boundary
4447 * '3' - align to doubleword boundary
4448 * '4' - align to quadword boundary
4449 * '5' - align to 32 byte boundary
4450 * '6' - align to 64 byte boundary
4451 *
4452 */
4453
4454 void
ppc_pe_section(ignore)4455 ppc_pe_section (ignore)
4456 int ignore ATTRIBUTE_UNUSED;
4457 {
4458 /* Strip out the section name. */
4459 char *section_name;
4460 char c;
4461 char *name;
4462 unsigned int exp;
4463 flagword flags;
4464 segT sec;
4465 int align;
4466
4467 section_name = input_line_pointer;
4468 c = get_symbol_end ();
4469
4470 name = xmalloc (input_line_pointer - section_name + 1);
4471 strcpy (name, section_name);
4472
4473 *input_line_pointer = c;
4474
4475 SKIP_WHITESPACE ();
4476
4477 exp = 0;
4478 flags = SEC_NO_FLAGS;
4479
4480 if (strcmp (name, ".idata$2") == 0)
4481 {
4482 align = 0;
4483 }
4484 else if (strcmp (name, ".idata$3") == 0)
4485 {
4486 align = 0;
4487 }
4488 else if (strcmp (name, ".idata$4") == 0)
4489 {
4490 align = 2;
4491 }
4492 else if (strcmp (name, ".idata$5") == 0)
4493 {
4494 align = 2;
4495 }
4496 else if (strcmp (name, ".idata$6") == 0)
4497 {
4498 align = 1;
4499 }
4500 else
4501 /* Default alignment to 16 byte boundary. */
4502 align = 4;
4503
4504 if (*input_line_pointer == ',')
4505 {
4506 ++input_line_pointer;
4507 SKIP_WHITESPACE ();
4508 if (*input_line_pointer != '"')
4509 exp = get_absolute_expression ();
4510 else
4511 {
4512 ++input_line_pointer;
4513 while (*input_line_pointer != '"'
4514 && ! is_end_of_line[(unsigned char) *input_line_pointer])
4515 {
4516 switch (*input_line_pointer)
4517 {
4518 /* Section Contents */
4519 case 'a': /* unknown */
4520 as_bad (_("Unsupported section attribute -- 'a'"));
4521 break;
4522 case 'c': /* code section */
4523 flags |= SEC_CODE;
4524 break;
4525 case 'd': /* section has initialized data */
4526 flags |= SEC_DATA;
4527 break;
4528 case 'u': /* section has uninitialized data */
4529 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
4530 in winnt.h */
4531 flags |= SEC_ROM;
4532 break;
4533 case 'i': /* section contains directives (info) */
4534 /* FIXME: This is IMAGE_SCN_LNK_INFO
4535 in winnt.h */
4536 flags |= SEC_HAS_CONTENTS;
4537 break;
4538 case 'n': /* section can be discarded */
4539 flags &=~ SEC_LOAD;
4540 break;
4541 case 'R': /* Remove section at link time */
4542 flags |= SEC_NEVER_LOAD;
4543 break;
4544
4545 /* Section Protection */
4546 case 'r': /* section is readable */
4547 flags |= IMAGE_SCN_MEM_READ;
4548 break;
4549 case 'w': /* section is writeable */
4550 flags |= IMAGE_SCN_MEM_WRITE;
4551 break;
4552 case 'x': /* section is executable */
4553 flags |= IMAGE_SCN_MEM_EXECUTE;
4554 break;
4555 case 's': /* section is sharable */
4556 flags |= IMAGE_SCN_MEM_SHARED;
4557 break;
4558
4559 /* Section Alignment */
4560 case '0': /* align to byte boundary */
4561 flags |= IMAGE_SCN_ALIGN_1BYTES;
4562 align = 0;
4563 break;
4564 case '1': /* align to halfword boundary */
4565 flags |= IMAGE_SCN_ALIGN_2BYTES;
4566 align = 1;
4567 break;
4568 case '2': /* align to word boundary */
4569 flags |= IMAGE_SCN_ALIGN_4BYTES;
4570 align = 2;
4571 break;
4572 case '3': /* align to doubleword boundary */
4573 flags |= IMAGE_SCN_ALIGN_8BYTES;
4574 align = 3;
4575 break;
4576 case '4': /* align to quadword boundary */
4577 flags |= IMAGE_SCN_ALIGN_16BYTES;
4578 align = 4;
4579 break;
4580 case '5': /* align to 32 byte boundary */
4581 flags |= IMAGE_SCN_ALIGN_32BYTES;
4582 align = 5;
4583 break;
4584 case '6': /* align to 64 byte boundary */
4585 flags |= IMAGE_SCN_ALIGN_64BYTES;
4586 align = 6;
4587 break;
4588
4589 default:
4590 as_bad (_("unknown section attribute '%c'"),
4591 *input_line_pointer);
4592 break;
4593 }
4594 ++input_line_pointer;
4595 }
4596 if (*input_line_pointer == '"')
4597 ++input_line_pointer;
4598 }
4599 }
4600
4601 sec = subseg_new (name, (subsegT) exp);
4602
4603 ppc_set_current_section (sec);
4604
4605 if (flags != SEC_NO_FLAGS)
4606 {
4607 if (! bfd_set_section_flags (stdoutput, sec, flags))
4608 as_bad (_("error setting flags for \"%s\": %s"),
4609 bfd_section_name (stdoutput, sec),
4610 bfd_errmsg (bfd_get_error ()));
4611 }
4612
4613 bfd_set_section_alignment (stdoutput, sec, align);
4614
4615 }
4616
4617 static void
ppc_pe_function(ignore)4618 ppc_pe_function (ignore)
4619 int ignore ATTRIBUTE_UNUSED;
4620 {
4621 char *name;
4622 char endc;
4623 symbolS *ext_sym;
4624
4625 name = input_line_pointer;
4626 endc = get_symbol_end ();
4627
4628 ext_sym = symbol_find_or_make (name);
4629
4630 *input_line_pointer = endc;
4631
4632 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
4633 SF_SET_FUNCTION (ext_sym);
4634 SF_SET_PROCESS (ext_sym);
4635 coff_add_linesym (ext_sym);
4636
4637 demand_empty_rest_of_line ();
4638 }
4639
4640 static void
ppc_pe_tocd(ignore)4641 ppc_pe_tocd (ignore)
4642 int ignore ATTRIBUTE_UNUSED;
4643 {
4644 if (tocdata_section == 0)
4645 {
4646 tocdata_section = subseg_new (".tocd", 0);
4647 /* FIXME: section flags won't work. */
4648 bfd_set_section_flags (stdoutput, tocdata_section,
4649 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4650 | SEC_READONLY | SEC_DATA));
4651
4652 bfd_set_section_alignment (stdoutput, tocdata_section, 2);
4653 }
4654 else
4655 {
4656 rdata_section = subseg_new (".tocd", 0);
4657 }
4658
4659 ppc_set_current_section (tocdata_section);
4660
4661 demand_empty_rest_of_line ();
4662 }
4663
4664 /* Don't adjust TOC relocs to use the section symbol. */
4665
4666 int
ppc_pe_fix_adjustable(fix)4667 ppc_pe_fix_adjustable (fix)
4668 fixS *fix;
4669 {
4670 return fix->fx_r_type != BFD_RELOC_PPC_TOC16;
4671 }
4672
4673 #endif
4674
4675 #ifdef OBJ_XCOFF
4676
4677 /* XCOFF specific symbol and file handling. */
4678
4679 /* Canonicalize the symbol name. We use the to force the suffix, if
4680 any, to use square brackets, and to be in upper case. */
4681
4682 char *
ppc_canonicalize_symbol_name(name)4683 ppc_canonicalize_symbol_name (name)
4684 char *name;
4685 {
4686 char *s;
4687
4688 if (ppc_stab_symbol)
4689 return name;
4690
4691 for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
4692 ;
4693 if (*s != '\0')
4694 {
4695 char brac;
4696
4697 if (*s == '[')
4698 brac = ']';
4699 else
4700 {
4701 *s = '[';
4702 brac = '}';
4703 }
4704
4705 for (s++; *s != '\0' && *s != brac; s++)
4706 *s = TOUPPER (*s);
4707
4708 if (*s == '\0' || s[1] != '\0')
4709 as_bad (_("bad symbol suffix"));
4710
4711 *s = ']';
4712 }
4713
4714 return name;
4715 }
4716
4717 /* Set the class of a symbol based on the suffix, if any. This is
4718 called whenever a new symbol is created. */
4719
4720 void
ppc_symbol_new_hook(sym)4721 ppc_symbol_new_hook (sym)
4722 symbolS *sym;
4723 {
4724 struct ppc_tc_sy *tc;
4725 const char *s;
4726
4727 tc = symbol_get_tc (sym);
4728 tc->next = NULL;
4729 tc->output = 0;
4730 tc->class = -1;
4731 tc->real_name = NULL;
4732 tc->subseg = 0;
4733 tc->align = 0;
4734 tc->size = NULL;
4735 tc->within = NULL;
4736
4737 if (ppc_stab_symbol)
4738 return;
4739
4740 s = strchr (S_GET_NAME (sym), '[');
4741 if (s == (const char *) NULL)
4742 {
4743 /* There is no suffix. */
4744 return;
4745 }
4746
4747 ++s;
4748
4749 switch (s[0])
4750 {
4751 case 'B':
4752 if (strcmp (s, "BS]") == 0)
4753 tc->class = XMC_BS;
4754 break;
4755 case 'D':
4756 if (strcmp (s, "DB]") == 0)
4757 tc->class = XMC_DB;
4758 else if (strcmp (s, "DS]") == 0)
4759 tc->class = XMC_DS;
4760 break;
4761 case 'G':
4762 if (strcmp (s, "GL]") == 0)
4763 tc->class = XMC_GL;
4764 break;
4765 case 'P':
4766 if (strcmp (s, "PR]") == 0)
4767 tc->class = XMC_PR;
4768 break;
4769 case 'R':
4770 if (strcmp (s, "RO]") == 0)
4771 tc->class = XMC_RO;
4772 else if (strcmp (s, "RW]") == 0)
4773 tc->class = XMC_RW;
4774 break;
4775 case 'S':
4776 if (strcmp (s, "SV]") == 0)
4777 tc->class = XMC_SV;
4778 break;
4779 case 'T':
4780 if (strcmp (s, "TC]") == 0)
4781 tc->class = XMC_TC;
4782 else if (strcmp (s, "TI]") == 0)
4783 tc->class = XMC_TI;
4784 else if (strcmp (s, "TB]") == 0)
4785 tc->class = XMC_TB;
4786 else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
4787 tc->class = XMC_TC0;
4788 break;
4789 case 'U':
4790 if (strcmp (s, "UA]") == 0)
4791 tc->class = XMC_UA;
4792 else if (strcmp (s, "UC]") == 0)
4793 tc->class = XMC_UC;
4794 break;
4795 case 'X':
4796 if (strcmp (s, "XO]") == 0)
4797 tc->class = XMC_XO;
4798 break;
4799 }
4800
4801 if (tc->class == -1)
4802 as_bad (_("Unrecognized symbol suffix"));
4803 }
4804
4805 /* Set the class of a label based on where it is defined. This
4806 handles symbols without suffixes. Also, move the symbol so that it
4807 follows the csect symbol. */
4808
4809 void
ppc_frob_label(sym)4810 ppc_frob_label (sym)
4811 symbolS *sym;
4812 {
4813 if (ppc_current_csect != (symbolS *) NULL)
4814 {
4815 if (symbol_get_tc (sym)->class == -1)
4816 symbol_get_tc (sym)->class = symbol_get_tc (ppc_current_csect)->class;
4817
4818 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
4819 symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
4820 &symbol_rootP, &symbol_lastP);
4821 symbol_get_tc (ppc_current_csect)->within = sym;
4822 }
4823 }
4824
4825 /* This variable is set by ppc_frob_symbol if any absolute symbols are
4826 seen. It tells ppc_adjust_symtab whether it needs to look through
4827 the symbols. */
4828
4829 static bfd_boolean ppc_saw_abs;
4830
4831 /* Change the name of a symbol just before writing it out. Set the
4832 real name if the .rename pseudo-op was used. Otherwise, remove any
4833 class suffix. Return 1 if the symbol should not be included in the
4834 symbol table. */
4835
4836 int
ppc_frob_symbol(sym)4837 ppc_frob_symbol (sym)
4838 symbolS *sym;
4839 {
4840 static symbolS *ppc_last_function;
4841 static symbolS *set_end;
4842
4843 /* Discard symbols that should not be included in the output symbol
4844 table. */
4845 if (! symbol_used_in_reloc_p (sym)
4846 && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
4847 || (! S_IS_EXTERNAL (sym)
4848 && ! symbol_get_tc (sym)->output
4849 && S_GET_STORAGE_CLASS (sym) != C_FILE)))
4850 return 1;
4851
4852 /* This one will disappear anyway. Don't make a csect sym for it. */
4853 if (sym == abs_section_sym)
4854 return 1;
4855
4856 if (symbol_get_tc (sym)->real_name != (char *) NULL)
4857 S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
4858 else
4859 {
4860 const char *name;
4861 const char *s;
4862
4863 name = S_GET_NAME (sym);
4864 s = strchr (name, '[');
4865 if (s != (char *) NULL)
4866 {
4867 unsigned int len;
4868 char *snew;
4869
4870 len = s - name;
4871 snew = xmalloc (len + 1);
4872 memcpy (snew, name, len);
4873 snew[len] = '\0';
4874
4875 S_SET_NAME (sym, snew);
4876 }
4877 }
4878
4879 if (set_end != (symbolS *) NULL)
4880 {
4881 SA_SET_SYM_ENDNDX (set_end, sym);
4882 set_end = NULL;
4883 }
4884
4885 if (SF_GET_FUNCTION (sym))
4886 {
4887 if (ppc_last_function != (symbolS *) NULL)
4888 as_bad (_("two .function pseudo-ops with no intervening .ef"));
4889 ppc_last_function = sym;
4890 if (symbol_get_tc (sym)->size != (symbolS *) NULL)
4891 {
4892 resolve_symbol_value (symbol_get_tc (sym)->size);
4893 SA_SET_SYM_FSIZE (sym,
4894 (long) S_GET_VALUE (symbol_get_tc (sym)->size));
4895 }
4896 }
4897 else if (S_GET_STORAGE_CLASS (sym) == C_FCN
4898 && strcmp (S_GET_NAME (sym), ".ef") == 0)
4899 {
4900 if (ppc_last_function == (symbolS *) NULL)
4901 as_bad (_(".ef with no preceding .function"));
4902 else
4903 {
4904 set_end = ppc_last_function;
4905 ppc_last_function = NULL;
4906
4907 /* We don't have a C_EFCN symbol, but we need to force the
4908 COFF backend to believe that it has seen one. */
4909 coff_last_function = NULL;
4910 }
4911 }
4912
4913 if (! S_IS_EXTERNAL (sym)
4914 && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
4915 && S_GET_STORAGE_CLASS (sym) != C_FILE
4916 && S_GET_STORAGE_CLASS (sym) != C_FCN
4917 && S_GET_STORAGE_CLASS (sym) != C_BLOCK
4918 && S_GET_STORAGE_CLASS (sym) != C_BSTAT
4919 && S_GET_STORAGE_CLASS (sym) != C_ESTAT
4920 && S_GET_STORAGE_CLASS (sym) != C_BINCL
4921 && S_GET_STORAGE_CLASS (sym) != C_EINCL
4922 && S_GET_SEGMENT (sym) != ppc_coff_debug_section)
4923 S_SET_STORAGE_CLASS (sym, C_HIDEXT);
4924
4925 if (S_GET_STORAGE_CLASS (sym) == C_EXT
4926 || S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
4927 {
4928 int i;
4929 union internal_auxent *a;
4930
4931 /* Create a csect aux. */
4932 i = S_GET_NUMBER_AUXILIARY (sym);
4933 S_SET_NUMBER_AUXILIARY (sym, i + 1);
4934 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent;
4935 if (symbol_get_tc (sym)->class == XMC_TC0)
4936 {
4937 /* This is the TOC table. */
4938 know (strcmp (S_GET_NAME (sym), "TOC") == 0);
4939 a->x_csect.x_scnlen.l = 0;
4940 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
4941 }
4942 else if (symbol_get_tc (sym)->subseg != 0)
4943 {
4944 /* This is a csect symbol. x_scnlen is the size of the
4945 csect. */
4946 if (symbol_get_tc (sym)->next == (symbolS *) NULL)
4947 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4948 S_GET_SEGMENT (sym))
4949 - S_GET_VALUE (sym));
4950 else
4951 {
4952 resolve_symbol_value (symbol_get_tc (sym)->next);
4953 a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next)
4954 - S_GET_VALUE (sym));
4955 }
4956 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD;
4957 }
4958 else if (S_GET_SEGMENT (sym) == bss_section)
4959 {
4960 /* This is a common symbol. */
4961 a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset;
4962 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM;
4963 if (S_IS_EXTERNAL (sym))
4964 symbol_get_tc (sym)->class = XMC_RW;
4965 else
4966 symbol_get_tc (sym)->class = XMC_BS;
4967 }
4968 else if (S_GET_SEGMENT (sym) == absolute_section)
4969 {
4970 /* This is an absolute symbol. The csect will be created by
4971 ppc_adjust_symtab. */
4972 ppc_saw_abs = TRUE;
4973 a->x_csect.x_smtyp = XTY_LD;
4974 if (symbol_get_tc (sym)->class == -1)
4975 symbol_get_tc (sym)->class = XMC_XO;
4976 }
4977 else if (! S_IS_DEFINED (sym))
4978 {
4979 /* This is an external symbol. */
4980 a->x_csect.x_scnlen.l = 0;
4981 a->x_csect.x_smtyp = XTY_ER;
4982 }
4983 else if (symbol_get_tc (sym)->class == XMC_TC)
4984 {
4985 symbolS *next;
4986
4987 /* This is a TOC definition. x_scnlen is the size of the
4988 TOC entry. */
4989 next = symbol_next (sym);
4990 while (symbol_get_tc (next)->class == XMC_TC0)
4991 next = symbol_next (next);
4992 if (next == (symbolS *) NULL
4993 || symbol_get_tc (next)->class != XMC_TC)
4994 {
4995 if (ppc_after_toc_frag == (fragS *) NULL)
4996 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4997 data_section)
4998 - S_GET_VALUE (sym));
4999 else
5000 a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address
5001 - S_GET_VALUE (sym));
5002 }
5003 else
5004 {
5005 resolve_symbol_value (next);
5006 a->x_csect.x_scnlen.l = (S_GET_VALUE (next)
5007 - S_GET_VALUE (sym));
5008 }
5009 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
5010 }
5011 else
5012 {
5013 symbolS *csect;
5014
5015 /* This is a normal symbol definition. x_scnlen is the
5016 symbol index of the containing csect. */
5017 if (S_GET_SEGMENT (sym) == text_section)
5018 csect = ppc_text_csects;
5019 else if (S_GET_SEGMENT (sym) == data_section)
5020 csect = ppc_data_csects;
5021 else
5022 abort ();
5023
5024 /* Skip the initial dummy symbol. */
5025 csect = symbol_get_tc (csect)->next;
5026
5027 if (csect == (symbolS *) NULL)
5028 {
5029 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
5030 a->x_csect.x_scnlen.l = 0;
5031 }
5032 else
5033 {
5034 while (symbol_get_tc (csect)->next != (symbolS *) NULL)
5035 {
5036 resolve_symbol_value (symbol_get_tc (csect)->next);
5037 if (S_GET_VALUE (symbol_get_tc (csect)->next)
5038 > S_GET_VALUE (sym))
5039 break;
5040 csect = symbol_get_tc (csect)->next;
5041 }
5042
5043 a->x_csect.x_scnlen.p =
5044 coffsymbol (symbol_get_bfdsym (csect))->native;
5045 coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen =
5046 1;
5047 }
5048 a->x_csect.x_smtyp = XTY_LD;
5049 }
5050
5051 a->x_csect.x_parmhash = 0;
5052 a->x_csect.x_snhash = 0;
5053 if (symbol_get_tc (sym)->class == -1)
5054 a->x_csect.x_smclas = XMC_PR;
5055 else
5056 a->x_csect.x_smclas = symbol_get_tc (sym)->class;
5057 a->x_csect.x_stab = 0;
5058 a->x_csect.x_snstab = 0;
5059
5060 /* Don't let the COFF backend resort these symbols. */
5061 symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
5062 }
5063 else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
5064 {
5065 /* We want the value to be the symbol index of the referenced
5066 csect symbol. BFD will do that for us if we set the right
5067 flags. */
5068 asymbol *bsym = symbol_get_bfdsym (symbol_get_tc (sym)->within);
5069 combined_entry_type *c = coffsymbol (bsym)->native;
5070
5071 S_SET_VALUE (sym, (valueT) (size_t) c);
5072 coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
5073 }
5074 else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
5075 {
5076 symbolS *block;
5077 symbolS *csect;
5078
5079 /* The value is the offset from the enclosing csect. */
5080 block = symbol_get_tc (sym)->within;
5081 csect = symbol_get_tc (block)->within;
5082 resolve_symbol_value (csect);
5083 S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect));
5084 }
5085 else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
5086 || S_GET_STORAGE_CLASS (sym) == C_EINCL)
5087 {
5088 /* We want the value to be a file offset into the line numbers.
5089 BFD will do that for us if we set the right flags. We have
5090 already set the value correctly. */
5091 coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
5092 }
5093
5094 return 0;
5095 }
5096
5097 /* Adjust the symbol table. This creates csect symbols for all
5098 absolute symbols. */
5099
5100 void
ppc_adjust_symtab()5101 ppc_adjust_symtab ()
5102 {
5103 symbolS *sym;
5104
5105 if (! ppc_saw_abs)
5106 return;
5107
5108 for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
5109 {
5110 symbolS *csect;
5111 int i;
5112 union internal_auxent *a;
5113
5114 if (S_GET_SEGMENT (sym) != absolute_section)
5115 continue;
5116
5117 csect = symbol_create (".abs[XO]", absolute_section,
5118 S_GET_VALUE (sym), &zero_address_frag);
5119 symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
5120 S_SET_STORAGE_CLASS (csect, C_HIDEXT);
5121 i = S_GET_NUMBER_AUXILIARY (csect);
5122 S_SET_NUMBER_AUXILIARY (csect, i + 1);
5123 a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent;
5124 a->x_csect.x_scnlen.l = 0;
5125 a->x_csect.x_smtyp = XTY_SD;
5126 a->x_csect.x_parmhash = 0;
5127 a->x_csect.x_snhash = 0;
5128 a->x_csect.x_smclas = XMC_XO;
5129 a->x_csect.x_stab = 0;
5130 a->x_csect.x_snstab = 0;
5131
5132 symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
5133
5134 i = S_GET_NUMBER_AUXILIARY (sym);
5135 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent;
5136 a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native;
5137 coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1;
5138 }
5139
5140 ppc_saw_abs = FALSE;
5141 }
5142
5143 /* Set the VMA for a section. This is called on all the sections in
5144 turn. */
5145
5146 void
ppc_frob_section(sec)5147 ppc_frob_section (sec)
5148 asection *sec;
5149 {
5150 static bfd_vma vma = 0;
5151
5152 vma = md_section_align (sec, vma);
5153 bfd_set_section_vma (stdoutput, sec, vma);
5154 vma += bfd_section_size (stdoutput, sec);
5155 }
5156
5157 #endif /* OBJ_XCOFF */
5158
5159 /* Turn a string in input_line_pointer into a floating point constant
5160 of type TYPE, and store the appropriate bytes in *LITP. The number
5161 of LITTLENUMS emitted is stored in *SIZEP. An error message is
5162 returned, or NULL on OK. */
5163
5164 char *
md_atof(type,litp,sizep)5165 md_atof (type, litp, sizep)
5166 int type;
5167 char *litp;
5168 int *sizep;
5169 {
5170 int prec;
5171 LITTLENUM_TYPE words[4];
5172 char *t;
5173 int i;
5174
5175 switch (type)
5176 {
5177 case 'f':
5178 prec = 2;
5179 break;
5180
5181 case 'd':
5182 prec = 4;
5183 break;
5184
5185 default:
5186 *sizep = 0;
5187 return _("bad call to md_atof");
5188 }
5189
5190 t = atof_ieee (input_line_pointer, type, words);
5191 if (t)
5192 input_line_pointer = t;
5193
5194 *sizep = prec * 2;
5195
5196 if (target_big_endian)
5197 {
5198 for (i = 0; i < prec; i++)
5199 {
5200 md_number_to_chars (litp, (valueT) words[i], 2);
5201 litp += 2;
5202 }
5203 }
5204 else
5205 {
5206 for (i = prec - 1; i >= 0; i--)
5207 {
5208 md_number_to_chars (litp, (valueT) words[i], 2);
5209 litp += 2;
5210 }
5211 }
5212
5213 return NULL;
5214 }
5215
5216 /* Write a value out to the object file, using the appropriate
5217 endianness. */
5218
5219 void
md_number_to_chars(buf,val,n)5220 md_number_to_chars (buf, val, n)
5221 char *buf;
5222 valueT val;
5223 int n;
5224 {
5225 if (target_big_endian)
5226 number_to_chars_bigendian (buf, val, n);
5227 else
5228 number_to_chars_littleendian (buf, val, n);
5229 }
5230
5231 /* Align a section (I don't know why this is machine dependent). */
5232
5233 valueT
md_section_align(seg,addr)5234 md_section_align (seg, addr)
5235 asection *seg;
5236 valueT addr;
5237 {
5238 int align = bfd_get_section_alignment (stdoutput, seg);
5239
5240 return ((addr + (1 << align) - 1) & (-1 << align));
5241 }
5242
5243 /* We don't have any form of relaxing. */
5244
5245 int
md_estimate_size_before_relax(fragp,seg)5246 md_estimate_size_before_relax (fragp, seg)
5247 fragS *fragp ATTRIBUTE_UNUSED;
5248 asection *seg ATTRIBUTE_UNUSED;
5249 {
5250 abort ();
5251 return 0;
5252 }
5253
5254 /* Convert a machine dependent frag. We never generate these. */
5255
5256 void
md_convert_frag(abfd,sec,fragp)5257 md_convert_frag (abfd, sec, fragp)
5258 bfd *abfd ATTRIBUTE_UNUSED;
5259 asection *sec ATTRIBUTE_UNUSED;
5260 fragS *fragp ATTRIBUTE_UNUSED;
5261 {
5262 abort ();
5263 }
5264
5265 /* We have no need to default values of symbols. */
5266
5267 symbolS *
md_undefined_symbol(name)5268 md_undefined_symbol (name)
5269 char *name ATTRIBUTE_UNUSED;
5270 {
5271 return 0;
5272 }
5273
5274 /* Functions concerning relocs. */
5275
5276 /* The location from which a PC relative jump should be calculated,
5277 given a PC relative reloc. */
5278
5279 long
md_pcrel_from_section(fixp,sec)5280 md_pcrel_from_section (fixp, sec)
5281 fixS *fixp;
5282 segT sec ATTRIBUTE_UNUSED;
5283 {
5284 return fixp->fx_frag->fr_address + fixp->fx_where;
5285 }
5286
5287 #ifdef OBJ_XCOFF
5288
5289 /* This is called to see whether a fixup should be adjusted to use a
5290 section symbol. We take the opportunity to change a fixup against
5291 a symbol in the TOC subsegment into a reloc against the
5292 corresponding .tc symbol. */
5293
5294 int
ppc_fix_adjustable(fix)5295 ppc_fix_adjustable (fix)
5296 fixS *fix;
5297 {
5298 valueT val = resolve_symbol_value (fix->fx_addsy);
5299 segT symseg = S_GET_SEGMENT (fix->fx_addsy);
5300 TC_SYMFIELD_TYPE *tc;
5301
5302 if (symseg == absolute_section)
5303 return 0;
5304
5305 if (ppc_toc_csect != (symbolS *) NULL
5306 && fix->fx_addsy != ppc_toc_csect
5307 && symseg == data_section
5308 && val >= ppc_toc_frag->fr_address
5309 && (ppc_after_toc_frag == (fragS *) NULL
5310 || val < ppc_after_toc_frag->fr_address))
5311 {
5312 symbolS *sy;
5313
5314 for (sy = symbol_next (ppc_toc_csect);
5315 sy != (symbolS *) NULL;
5316 sy = symbol_next (sy))
5317 {
5318 TC_SYMFIELD_TYPE *sy_tc = symbol_get_tc (sy);
5319
5320 if (sy_tc->class == XMC_TC0)
5321 continue;
5322 if (sy_tc->class != XMC_TC)
5323 break;
5324 if (val == resolve_symbol_value (sy))
5325 {
5326 fix->fx_addsy = sy;
5327 fix->fx_addnumber = val - ppc_toc_frag->fr_address;
5328 return 0;
5329 }
5330 }
5331
5332 as_bad_where (fix->fx_file, fix->fx_line,
5333 _("symbol in .toc does not match any .tc"));
5334 }
5335
5336 /* Possibly adjust the reloc to be against the csect. */
5337 tc = symbol_get_tc (fix->fx_addsy);
5338 if (tc->subseg == 0
5339 && tc->class != XMC_TC0
5340 && tc->class != XMC_TC
5341 && symseg != bss_section
5342 /* Don't adjust if this is a reloc in the toc section. */
5343 && (symseg != data_section
5344 || ppc_toc_csect == NULL
5345 || val < ppc_toc_frag->fr_address
5346 || (ppc_after_toc_frag != NULL
5347 && val >= ppc_after_toc_frag->fr_address)))
5348 {
5349 symbolS *csect;
5350 symbolS *next_csect;
5351
5352 if (symseg == text_section)
5353 csect = ppc_text_csects;
5354 else if (symseg == data_section)
5355 csect = ppc_data_csects;
5356 else
5357 abort ();
5358
5359 /* Skip the initial dummy symbol. */
5360 csect = symbol_get_tc (csect)->next;
5361
5362 if (csect != (symbolS *) NULL)
5363 {
5364 while ((next_csect = symbol_get_tc (csect)->next) != (symbolS *) NULL
5365 && (symbol_get_frag (next_csect)->fr_address <= val))
5366 {
5367 /* If the csect address equals the symbol value, then we
5368 have to look through the full symbol table to see
5369 whether this is the csect we want. Note that we will
5370 only get here if the csect has zero length. */
5371 if (symbol_get_frag (csect)->fr_address == val
5372 && S_GET_VALUE (csect) == val)
5373 {
5374 symbolS *scan;
5375
5376 for (scan = symbol_next (csect);
5377 scan != NULL;
5378 scan = symbol_next (scan))
5379 {
5380 if (symbol_get_tc (scan)->subseg != 0)
5381 break;
5382 if (scan == fix->fx_addsy)
5383 break;
5384 }
5385
5386 /* If we found the symbol before the next csect
5387 symbol, then this is the csect we want. */
5388 if (scan == fix->fx_addsy)
5389 break;
5390 }
5391
5392 csect = next_csect;
5393 }
5394
5395 fix->fx_offset += val - symbol_get_frag (csect)->fr_address;
5396 fix->fx_addsy = csect;
5397 }
5398 return 0;
5399 }
5400
5401 /* Adjust a reloc against a .lcomm symbol to be against the base
5402 .lcomm. */
5403 if (symseg == bss_section
5404 && ! S_IS_EXTERNAL (fix->fx_addsy))
5405 {
5406 symbolS *sy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
5407
5408 fix->fx_offset += val - resolve_symbol_value (sy);
5409 fix->fx_addsy = sy;
5410 }
5411
5412 return 0;
5413 }
5414
5415 /* A reloc from one csect to another must be kept. The assembler
5416 will, of course, keep relocs between sections, and it will keep
5417 absolute relocs, but we need to force it to keep PC relative relocs
5418 between two csects in the same section. */
5419
5420 int
ppc_force_relocation(fix)5421 ppc_force_relocation (fix)
5422 fixS *fix;
5423 {
5424 /* At this point fix->fx_addsy should already have been converted to
5425 a csect symbol. If the csect does not include the fragment, then
5426 we need to force the relocation. */
5427 if (fix->fx_pcrel
5428 && fix->fx_addsy != NULL
5429 && symbol_get_tc (fix->fx_addsy)->subseg != 0
5430 && ((symbol_get_frag (fix->fx_addsy)->fr_address
5431 > fix->fx_frag->fr_address)
5432 || (symbol_get_tc (fix->fx_addsy)->next != NULL
5433 && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
5434 <= fix->fx_frag->fr_address))))
5435 return 1;
5436
5437 return generic_force_reloc (fix);
5438 }
5439
5440 #endif /* OBJ_XCOFF */
5441
5442 #ifdef OBJ_ELF
5443 /* If this function returns non-zero, it guarantees that a relocation
5444 will be emitted for a fixup. */
5445
5446 int
ppc_force_relocation(fix)5447 ppc_force_relocation (fix)
5448 fixS *fix;
5449 {
5450 /* Branch prediction relocations must force a relocation, as must
5451 the vtable description relocs. */
5452 switch (fix->fx_r_type)
5453 {
5454 case BFD_RELOC_PPC_B16_BRTAKEN:
5455 case BFD_RELOC_PPC_B16_BRNTAKEN:
5456 case BFD_RELOC_PPC_BA16_BRTAKEN:
5457 case BFD_RELOC_PPC_BA16_BRNTAKEN:
5458 case BFD_RELOC_PPC64_TOC:
5459 return 1;
5460 default:
5461 break;
5462 }
5463
5464 if (fix->fx_r_type >= BFD_RELOC_PPC_TLS
5465 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)
5466 return 1;
5467
5468 return generic_force_reloc (fix);
5469 }
5470
5471 int
ppc_fix_adjustable(fix)5472 ppc_fix_adjustable (fix)
5473 fixS *fix;
5474 {
5475 return (fix->fx_r_type != BFD_RELOC_16_GOTOFF
5476 && fix->fx_r_type != BFD_RELOC_LO16_GOTOFF
5477 && fix->fx_r_type != BFD_RELOC_HI16_GOTOFF
5478 && fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
5479 && fix->fx_r_type != BFD_RELOC_GPREL16
5480 && fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT
5481 && fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY
5482 && !(fix->fx_r_type >= BFD_RELOC_PPC_TLS
5483 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)
5484 && (fix->fx_pcrel
5485 || (fix->fx_subsy != NULL
5486 && (S_GET_SEGMENT (fix->fx_subsy)
5487 == S_GET_SEGMENT (fix->fx_addsy)))
5488 || S_IS_LOCAL (fix->fx_addsy)));
5489 }
5490 #endif
5491
5492 /* Apply a fixup to the object code. This is called for all the
5493 fixups we generated by the call to fix_new_exp, above. In the call
5494 above we used a reloc code which was the largest legal reloc code
5495 plus the operand index. Here we undo that to recover the operand
5496 index. At this point all symbol values should be fully resolved,
5497 and we attempt to completely resolve the reloc. If we can not do
5498 that, we determine the correct reloc code and put it back in the
5499 fixup. */
5500
5501 void
md_apply_fix3(fixP,valP,seg)5502 md_apply_fix3 (fixP, valP, seg)
5503 fixS *fixP;
5504 valueT * valP;
5505 segT seg ATTRIBUTE_UNUSED;
5506 {
5507 valueT value = * valP;
5508
5509 #ifdef OBJ_ELF
5510 if (fixP->fx_addsy != NULL)
5511 {
5512 /* Hack around bfd_install_relocation brain damage. */
5513 if (fixP->fx_pcrel)
5514 value += fixP->fx_frag->fr_address + fixP->fx_where;
5515 }
5516 else
5517 fixP->fx_done = 1;
5518 #else
5519 /* FIXME FIXME FIXME: The value we are passed in *valP includes
5520 the symbol values. Since we are using BFD_ASSEMBLER, if we are
5521 doing this relocation the code in write.c is going to call
5522 bfd_install_relocation, which is also going to use the symbol
5523 value. That means that if the reloc is fully resolved we want to
5524 use *valP since bfd_install_relocation is not being used.
5525 However, if the reloc is not fully resolved we do not want to use
5526 *valP, and must use fx_offset instead. However, if the reloc
5527 is PC relative, we do want to use *valP since it includes the
5528 result of md_pcrel_from. This is confusing. */
5529 if (fixP->fx_addsy == (symbolS *) NULL)
5530 fixP->fx_done = 1;
5531
5532 else if (fixP->fx_pcrel)
5533 ;
5534
5535 else
5536 value = fixP->fx_offset;
5537 #endif
5538
5539 if (fixP->fx_subsy != (symbolS *) NULL)
5540 {
5541 /* We can't actually support subtracting a symbol. */
5542 as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex"));
5543 }
5544
5545 if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
5546 {
5547 int opindex;
5548 const struct powerpc_operand *operand;
5549 char *where;
5550 unsigned long insn;
5551
5552 opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
5553
5554 operand = &powerpc_operands[opindex];
5555
5556 #ifdef OBJ_XCOFF
5557 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
5558 does not generate a reloc. It uses the offset of `sym' within its
5559 csect. Other usages, such as `.long sym', generate relocs. This
5560 is the documented behaviour of non-TOC symbols. */
5561 if ((operand->flags & PPC_OPERAND_PARENS) != 0
5562 && operand->bits == 16
5563 && operand->shift == 0
5564 && (operand->insert == NULL || ppc_obj64)
5565 && fixP->fx_addsy != NULL
5566 && symbol_get_tc (fixP->fx_addsy)->subseg != 0
5567 && symbol_get_tc (fixP->fx_addsy)->class != XMC_TC
5568 && symbol_get_tc (fixP->fx_addsy)->class != XMC_TC0
5569 && S_GET_SEGMENT (fixP->fx_addsy) != bss_section)
5570 {
5571 value = fixP->fx_offset;
5572 fixP->fx_done = 1;
5573 }
5574 #endif
5575
5576 /* Fetch the instruction, insert the fully resolved operand
5577 value, and stuff the instruction back again. */
5578 where = fixP->fx_frag->fr_literal + fixP->fx_where;
5579 if (target_big_endian)
5580 insn = bfd_getb32 ((unsigned char *) where);
5581 else
5582 insn = bfd_getl32 ((unsigned char *) where);
5583 insn = ppc_insert_operand (insn, operand, (offsetT) value,
5584 fixP->fx_file, fixP->fx_line);
5585 if (target_big_endian)
5586 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
5587 else
5588 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
5589
5590 if (fixP->fx_done)
5591 /* Nothing else to do here. */
5592 return;
5593
5594 assert (fixP->fx_addsy != NULL);
5595
5596 /* Determine a BFD reloc value based on the operand information.
5597 We are only prepared to turn a few of the operands into
5598 relocs. */
5599 if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
5600 && operand->bits == 26
5601 && operand->shift == 0)
5602 fixP->fx_r_type = BFD_RELOC_PPC_B26;
5603 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
5604 && operand->bits == 16
5605 && operand->shift == 0)
5606 {
5607 fixP->fx_r_type = BFD_RELOC_PPC_B16;
5608 #ifdef OBJ_XCOFF
5609 fixP->fx_size = 2;
5610 if (target_big_endian)
5611 fixP->fx_where += 2;
5612 #endif
5613 }
5614 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
5615 && operand->bits == 26
5616 && operand->shift == 0)
5617 fixP->fx_r_type = BFD_RELOC_PPC_BA26;
5618 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
5619 && operand->bits == 16
5620 && operand->shift == 0)
5621 {
5622 fixP->fx_r_type = BFD_RELOC_PPC_BA16;
5623 #ifdef OBJ_XCOFF
5624 fixP->fx_size = 2;
5625 if (target_big_endian)
5626 fixP->fx_where += 2;
5627 #endif
5628 }
5629 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
5630 else if ((operand->flags & PPC_OPERAND_PARENS) != 0
5631 && operand->bits == 16
5632 && operand->shift == 0)
5633 {
5634 if (ppc_is_toc_sym (fixP->fx_addsy))
5635 {
5636 fixP->fx_r_type = BFD_RELOC_PPC_TOC16;
5637 #ifdef OBJ_ELF
5638 if (ppc_obj64
5639 && (operand->flags & PPC_OPERAND_DS) != 0)
5640 fixP->fx_r_type = BFD_RELOC_PPC64_TOC16_DS;
5641 #endif
5642 }
5643 else
5644 {
5645 fixP->fx_r_type = BFD_RELOC_16;
5646 #ifdef OBJ_ELF
5647 if (ppc_obj64
5648 && (operand->flags & PPC_OPERAND_DS) != 0)
5649 fixP->fx_r_type = BFD_RELOC_PPC64_ADDR16_DS;
5650 #endif
5651 }
5652 fixP->fx_size = 2;
5653 if (target_big_endian)
5654 fixP->fx_where += 2;
5655 }
5656 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
5657 else
5658 {
5659 char *sfile;
5660 unsigned int sline;
5661
5662 /* Use expr_symbol_where to see if this is an expression
5663 symbol. */
5664 if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
5665 as_bad_where (fixP->fx_file, fixP->fx_line,
5666 _("unresolved expression that must be resolved"));
5667 else
5668 as_bad_where (fixP->fx_file, fixP->fx_line,
5669 _("unsupported relocation against %s"),
5670 S_GET_NAME (fixP->fx_addsy));
5671 fixP->fx_done = 1;
5672 return;
5673 }
5674 }
5675 else
5676 {
5677 #ifdef OBJ_ELF
5678 ppc_elf_validate_fix (fixP, seg);
5679 #endif
5680 switch (fixP->fx_r_type)
5681 {
5682 case BFD_RELOC_CTOR:
5683 if (ppc_obj64)
5684 goto ctor64;
5685 /* fall through */
5686
5687 case BFD_RELOC_32:
5688 if (fixP->fx_pcrel)
5689 fixP->fx_r_type = BFD_RELOC_32_PCREL;
5690 /* fall through */
5691
5692 case BFD_RELOC_RVA:
5693 case BFD_RELOC_32_PCREL:
5694 case BFD_RELOC_PPC_EMB_NADDR32:
5695 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5696 value, 4);
5697 break;
5698
5699 case BFD_RELOC_64:
5700 ctor64:
5701 if (fixP->fx_pcrel)
5702 fixP->fx_r_type = BFD_RELOC_64_PCREL;
5703 /* fall through */
5704
5705 case BFD_RELOC_64_PCREL:
5706 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5707 value, 8);
5708 break;
5709
5710 case BFD_RELOC_LO16:
5711 case BFD_RELOC_16:
5712 case BFD_RELOC_GPREL16:
5713 case BFD_RELOC_16_GOT_PCREL:
5714 case BFD_RELOC_16_GOTOFF:
5715 case BFD_RELOC_LO16_GOTOFF:
5716 case BFD_RELOC_HI16_GOTOFF:
5717 case BFD_RELOC_HI16_S_GOTOFF:
5718 case BFD_RELOC_16_BASEREL:
5719 case BFD_RELOC_LO16_BASEREL:
5720 case BFD_RELOC_HI16_BASEREL:
5721 case BFD_RELOC_HI16_S_BASEREL:
5722 case BFD_RELOC_PPC_EMB_NADDR16:
5723 case BFD_RELOC_PPC_EMB_NADDR16_LO:
5724 case BFD_RELOC_PPC_EMB_NADDR16_HI:
5725 case BFD_RELOC_PPC_EMB_NADDR16_HA:
5726 case BFD_RELOC_PPC_EMB_SDAI16:
5727 case BFD_RELOC_PPC_EMB_SDA2REL:
5728 case BFD_RELOC_PPC_EMB_SDA2I16:
5729 case BFD_RELOC_PPC_EMB_RELSEC16:
5730 case BFD_RELOC_PPC_EMB_RELST_LO:
5731 case BFD_RELOC_PPC_EMB_RELST_HI:
5732 case BFD_RELOC_PPC_EMB_RELST_HA:
5733 case BFD_RELOC_PPC_EMB_RELSDA:
5734 case BFD_RELOC_PPC_TOC16:
5735 #ifdef OBJ_ELF
5736 case BFD_RELOC_PPC64_TOC16_LO:
5737 case BFD_RELOC_PPC64_TOC16_HI:
5738 case BFD_RELOC_PPC64_TOC16_HA:
5739 #endif
5740 if (fixP->fx_pcrel)
5741 {
5742 if (fixP->fx_addsy != NULL)
5743 as_bad_where (fixP->fx_file, fixP->fx_line,
5744 _("cannot emit PC relative %s relocation against %s"),
5745 bfd_get_reloc_code_name (fixP->fx_r_type),
5746 S_GET_NAME (fixP->fx_addsy));
5747 else
5748 as_bad_where (fixP->fx_file, fixP->fx_line,
5749 _("cannot emit PC relative %s relocation"),
5750 bfd_get_reloc_code_name (fixP->fx_r_type));
5751 }
5752
5753 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5754 value, 2);
5755 break;
5756
5757 /* This case happens when you write, for example,
5758 lis %r3,(L1-L2)@ha
5759 where L1 and L2 are defined later. */
5760 case BFD_RELOC_HI16:
5761 if (fixP->fx_pcrel)
5762 abort ();
5763 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5764 PPC_HI (value), 2);
5765 break;
5766
5767 case BFD_RELOC_HI16_S:
5768 if (fixP->fx_pcrel)
5769 abort ();
5770 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5771 PPC_HA (value), 2);
5772 break;
5773
5774 #ifdef OBJ_ELF
5775 case BFD_RELOC_PPC64_HIGHER:
5776 if (fixP->fx_pcrel)
5777 abort ();
5778 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5779 PPC_HIGHER (value), 2);
5780 break;
5781
5782 case BFD_RELOC_PPC64_HIGHER_S:
5783 if (fixP->fx_pcrel)
5784 abort ();
5785 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5786 PPC_HIGHERA (value), 2);
5787 break;
5788
5789 case BFD_RELOC_PPC64_HIGHEST:
5790 if (fixP->fx_pcrel)
5791 abort ();
5792 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5793 PPC_HIGHEST (value), 2);
5794 break;
5795
5796 case BFD_RELOC_PPC64_HIGHEST_S:
5797 if (fixP->fx_pcrel)
5798 abort ();
5799 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5800 PPC_HIGHESTA (value), 2);
5801 break;
5802
5803 case BFD_RELOC_PPC64_ADDR16_DS:
5804 case BFD_RELOC_PPC64_ADDR16_LO_DS:
5805 case BFD_RELOC_PPC64_GOT16_DS:
5806 case BFD_RELOC_PPC64_GOT16_LO_DS:
5807 case BFD_RELOC_PPC64_PLT16_LO_DS:
5808 case BFD_RELOC_PPC64_SECTOFF_DS:
5809 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
5810 case BFD_RELOC_PPC64_TOC16_DS:
5811 case BFD_RELOC_PPC64_TOC16_LO_DS:
5812 case BFD_RELOC_PPC64_PLTGOT16_DS:
5813 case BFD_RELOC_PPC64_PLTGOT16_LO_DS:
5814 if (fixP->fx_pcrel)
5815 abort ();
5816 {
5817 unsigned char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
5818 unsigned long val, mask;
5819
5820 if (target_big_endian)
5821 val = bfd_getb32 (where - 2);
5822 else
5823 val = bfd_getl32 (where);
5824 mask = 0xfffc;
5825 /* lq insns reserve the four lsbs. */
5826 if ((ppc_cpu & PPC_OPCODE_POWER4) != 0
5827 && (val & (0x3f << 26)) == (56u << 26))
5828 mask = 0xfff0;
5829 val |= value & mask;
5830 if (target_big_endian)
5831 bfd_putb16 ((bfd_vma) val, where);
5832 else
5833 bfd_putl16 ((bfd_vma) val, where);
5834 }
5835 break;
5836
5837 case BFD_RELOC_PPC_B16_BRTAKEN:
5838 case BFD_RELOC_PPC_B16_BRNTAKEN:
5839 case BFD_RELOC_PPC_BA16_BRTAKEN:
5840 case BFD_RELOC_PPC_BA16_BRNTAKEN:
5841 break;
5842
5843 case BFD_RELOC_PPC_TLS:
5844 case BFD_RELOC_PPC_DTPMOD:
5845 case BFD_RELOC_PPC_TPREL16:
5846 case BFD_RELOC_PPC_TPREL16_LO:
5847 case BFD_RELOC_PPC_TPREL16_HI:
5848 case BFD_RELOC_PPC_TPREL16_HA:
5849 case BFD_RELOC_PPC_TPREL:
5850 case BFD_RELOC_PPC_DTPREL16:
5851 case BFD_RELOC_PPC_DTPREL16_LO:
5852 case BFD_RELOC_PPC_DTPREL16_HI:
5853 case BFD_RELOC_PPC_DTPREL16_HA:
5854 case BFD_RELOC_PPC_DTPREL:
5855 case BFD_RELOC_PPC_GOT_TLSGD16:
5856 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
5857 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
5858 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
5859 case BFD_RELOC_PPC_GOT_TLSLD16:
5860 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
5861 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
5862 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
5863 case BFD_RELOC_PPC_GOT_TPREL16:
5864 case BFD_RELOC_PPC_GOT_TPREL16_LO:
5865 case BFD_RELOC_PPC_GOT_TPREL16_HI:
5866 case BFD_RELOC_PPC_GOT_TPREL16_HA:
5867 case BFD_RELOC_PPC_GOT_DTPREL16:
5868 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
5869 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
5870 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
5871 case BFD_RELOC_PPC64_TPREL16_DS:
5872 case BFD_RELOC_PPC64_TPREL16_LO_DS:
5873 case BFD_RELOC_PPC64_TPREL16_HIGHER:
5874 case BFD_RELOC_PPC64_TPREL16_HIGHERA:
5875 case BFD_RELOC_PPC64_TPREL16_HIGHEST:
5876 case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
5877 case BFD_RELOC_PPC64_DTPREL16_DS:
5878 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
5879 case BFD_RELOC_PPC64_DTPREL16_HIGHER:
5880 case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
5881 case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
5882 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
5883 break;
5884 #endif
5885 /* Because SDA21 modifies the register field, the size is set to 4
5886 bytes, rather than 2, so offset it here appropriately. */
5887 case BFD_RELOC_PPC_EMB_SDA21:
5888 if (fixP->fx_pcrel)
5889 abort ();
5890
5891 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where
5892 + ((target_big_endian) ? 2 : 0),
5893 value, 2);
5894 break;
5895
5896 case BFD_RELOC_8:
5897 if (fixP->fx_pcrel)
5898 {
5899 /* This can occur if there is a bug in the input assembler, eg:
5900 ".byte <undefined_symbol> - ." */
5901 if (fixP->fx_addsy)
5902 as_bad (_("Unable to handle reference to symbol %s"),
5903 S_GET_NAME (fixP->fx_addsy));
5904 else
5905 as_bad (_("Unable to resolve expression"));
5906 fixP->fx_done = 1;
5907 }
5908 else
5909 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5910 value, 1);
5911 break;
5912
5913 case BFD_RELOC_24_PLT_PCREL:
5914 case BFD_RELOC_PPC_LOCAL24PC:
5915 if (!fixP->fx_pcrel && !fixP->fx_done)
5916 abort ();
5917
5918 if (fixP->fx_done)
5919 {
5920 char *where;
5921 unsigned long insn;
5922
5923 /* Fetch the instruction, insert the fully resolved operand
5924 value, and stuff the instruction back again. */
5925 where = fixP->fx_frag->fr_literal + fixP->fx_where;
5926 if (target_big_endian)
5927 insn = bfd_getb32 ((unsigned char *) where);
5928 else
5929 insn = bfd_getl32 ((unsigned char *) where);
5930 if ((value & 3) != 0)
5931 as_bad_where (fixP->fx_file, fixP->fx_line,
5932 _("must branch to an address a multiple of 4"));
5933 if ((offsetT) value < -0x40000000
5934 || (offsetT) value >= 0x40000000)
5935 as_bad_where (fixP->fx_file, fixP->fx_line,
5936 _("@local or @plt branch destination is too far away, %ld bytes"),
5937 (long) value);
5938 insn = insn | (value & 0x03fffffc);
5939 if (target_big_endian)
5940 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
5941 else
5942 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
5943 }
5944 break;
5945
5946 case BFD_RELOC_VTABLE_INHERIT:
5947 fixP->fx_done = 0;
5948 if (fixP->fx_addsy
5949 && !S_IS_DEFINED (fixP->fx_addsy)
5950 && !S_IS_WEAK (fixP->fx_addsy))
5951 S_SET_WEAK (fixP->fx_addsy);
5952 break;
5953
5954 case BFD_RELOC_VTABLE_ENTRY:
5955 fixP->fx_done = 0;
5956 break;
5957
5958 #ifdef OBJ_ELF
5959 /* Generated by reference to `sym@tocbase'. The sym is
5960 ignored by the linker. */
5961 case BFD_RELOC_PPC64_TOC:
5962 fixP->fx_done = 0;
5963 break;
5964 #endif
5965 default:
5966 fprintf (stderr,
5967 _("Gas failure, reloc value %d\n"), fixP->fx_r_type);
5968 fflush (stderr);
5969 abort ();
5970 }
5971 }
5972
5973 #ifdef OBJ_ELF
5974 fixP->fx_addnumber = value;
5975 #else
5976 if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16)
5977 fixP->fx_addnumber = 0;
5978 else
5979 {
5980 #ifdef TE_PE
5981 fixP->fx_addnumber = 0;
5982 #else
5983 /* We want to use the offset within the data segment of the
5984 symbol, not the actual VMA of the symbol. */
5985 fixP->fx_addnumber =
5986 - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixP->fx_addsy));
5987 #endif
5988 }
5989 #endif
5990 }
5991
5992 /* Generate a reloc for a fixup. */
5993
5994 arelent *
tc_gen_reloc(seg,fixp)5995 tc_gen_reloc (seg, fixp)
5996 asection *seg ATTRIBUTE_UNUSED;
5997 fixS *fixp;
5998 {
5999 arelent *reloc;
6000
6001 reloc = (arelent *) xmalloc (sizeof (arelent));
6002
6003 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
6004 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
6005 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
6006 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
6007 if (reloc->howto == (reloc_howto_type *) NULL)
6008 {
6009 as_bad_where (fixp->fx_file, fixp->fx_line,
6010 _("reloc %d not supported by object file format"),
6011 (int) fixp->fx_r_type);
6012 return NULL;
6013 }
6014 reloc->addend = fixp->fx_addnumber;
6015
6016 return reloc;
6017 }
6018
6019 void
ppc_cfi_frame_initial_instructions()6020 ppc_cfi_frame_initial_instructions ()
6021 {
6022 cfi_add_CFA_def_cfa (1, 0);
6023 }
6024
6025 int
tc_ppc_regname_to_dw2regnum(const char * regname)6026 tc_ppc_regname_to_dw2regnum (const char *regname)
6027 {
6028 unsigned int regnum = -1;
6029 unsigned int i;
6030 const char *p;
6031 char *q;
6032 static struct { char *name; int dw2regnum; } regnames[] =
6033 {
6034 { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 },
6035 { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 },
6036 { "cc", 68 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 },
6037 { "spe_acc", 111 }, { "spefscr", 112 }
6038 };
6039
6040 for (i = 0; i < ARRAY_SIZE (regnames); ++i)
6041 if (strcmp (regnames[i].name, regname) == 0)
6042 return regnames[i].dw2regnum;
6043
6044 if (regname[0] == 'r' || regname[0] == 'f' || regname[0] == 'v')
6045 {
6046 p = regname + 1 + (regname[1] == '.');
6047 regnum = strtoul (p, &q, 10);
6048 if (p == q || *q || regnum >= 32)
6049 return -1;
6050 if (regname[0] == 'f')
6051 regnum += 32;
6052 else if (regname[0] == 'v')
6053 regnum += 77;
6054 }
6055 else if (regname[0] == 'c' && regname[1] == 'r')
6056 {
6057 p = regname + 2 + (regname[2] == '.');
6058 if (p[0] < '0' || p[0] > '7' || p[1])
6059 return -1;
6060 regnum = p[0] - '0' + 68;
6061 }
6062 return regnum;
6063 }
6064