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[deliverable/binutils-gdb.git] / gas / config / tc-ppc.c
1 /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009, 2010 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 3, or (at your option)
11 any later version.
12
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21 02110-1301, USA. */
22
23 #include "as.h"
24 #include "safe-ctype.h"
25 #include "subsegs.h"
26 #include "dw2gencfi.h"
27 #include "opcode/ppc.h"
28
29 #ifdef OBJ_ELF
30 #include "elf/ppc.h"
31 #include "dwarf2dbg.h"
32 #endif
33
34 #ifdef TE_PE
35 #include "coff/pe.h"
36 #endif
37
38 /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
39
40 /* Tell the main code what the endianness is. */
41 extern int target_big_endian;
42
43 /* Whether or not, we've set target_big_endian. */
44 static int set_target_endian = 0;
45
46 /* Whether to use user friendly register names. */
47 #ifndef TARGET_REG_NAMES_P
48 #ifdef TE_PE
49 #define TARGET_REG_NAMES_P TRUE
50 #else
51 #define TARGET_REG_NAMES_P FALSE
52 #endif
53 #endif
54
55 /* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST,
56 HIGHESTA. */
57
58 /* #lo(value) denotes the least significant 16 bits of the indicated. */
59 #define PPC_LO(v) ((v) & 0xffff)
60
61 /* #hi(value) denotes bits 16 through 31 of the indicated value. */
62 #define PPC_HI(v) (((v) >> 16) & 0xffff)
63
64 /* #ha(value) denotes the high adjusted value: bits 16 through 31 of
65 the indicated value, compensating for #lo() being treated as a
66 signed number. */
67 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
68
69 /* #higher(value) denotes bits 32 through 47 of the indicated value. */
70 #define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff)
71
72 /* #highera(value) denotes bits 32 through 47 of the indicated value,
73 compensating for #lo() being treated as a signed number. */
74 #define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000)
75
76 /* #highest(value) denotes bits 48 through 63 of the indicated value. */
77 #define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff)
78
79 /* #highesta(value) denotes bits 48 through 63 of the indicated value,
80 compensating for #lo being treated as a signed number. */
81 #define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000)
82
83 #define SEX16(val) ((((val) & 0xffff) ^ 0x8000) - 0x8000)
84
85 static bfd_boolean reg_names_p = TARGET_REG_NAMES_P;
86
87 static void ppc_macro (char *, const struct powerpc_macro *);
88 static void ppc_byte (int);
89
90 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
91 static void ppc_tc (int);
92 static void ppc_machine (int);
93 #endif
94
95 #ifdef OBJ_XCOFF
96 static void ppc_comm (int);
97 static void ppc_bb (int);
98 static void ppc_bc (int);
99 static void ppc_bf (int);
100 static void ppc_biei (int);
101 static void ppc_bs (int);
102 static void ppc_eb (int);
103 static void ppc_ec (int);
104 static void ppc_ef (int);
105 static void ppc_es (int);
106 static void ppc_csect (int);
107 static void ppc_change_csect (symbolS *, offsetT);
108 static void ppc_function (int);
109 static void ppc_extern (int);
110 static void ppc_lglobl (int);
111 static void ppc_ref (int);
112 static void ppc_section (int);
113 static void ppc_named_section (int);
114 static void ppc_stabx (int);
115 static void ppc_rename (int);
116 static void ppc_toc (int);
117 static void ppc_xcoff_cons (int);
118 static void ppc_vbyte (int);
119 #endif
120
121 #ifdef OBJ_ELF
122 static void ppc_elf_cons (int);
123 static void ppc_elf_rdata (int);
124 static void ppc_elf_lcomm (int);
125 #endif
126
127 #ifdef TE_PE
128 static void ppc_previous (int);
129 static void ppc_pdata (int);
130 static void ppc_ydata (int);
131 static void ppc_reldata (int);
132 static void ppc_rdata (int);
133 static void ppc_ualong (int);
134 static void ppc_znop (int);
135 static void ppc_pe_comm (int);
136 static void ppc_pe_section (int);
137 static void ppc_pe_function (int);
138 static void ppc_pe_tocd (int);
139 #endif
140 \f
141 /* Generic assembler global variables which must be defined by all
142 targets. */
143
144 #ifdef OBJ_ELF
145 /* This string holds the chars that always start a comment. If the
146 pre-processor is disabled, these aren't very useful. The macro
147 tc_comment_chars points to this. We use this, rather than the
148 usual comment_chars, so that we can switch for Solaris conventions. */
149 static const char ppc_solaris_comment_chars[] = "#!";
150 static const char ppc_eabi_comment_chars[] = "#";
151
152 #ifdef TARGET_SOLARIS_COMMENT
153 const char *ppc_comment_chars = ppc_solaris_comment_chars;
154 #else
155 const char *ppc_comment_chars = ppc_eabi_comment_chars;
156 #endif
157 #else
158 const char comment_chars[] = "#";
159 #endif
160
161 /* Characters which start a comment at the beginning of a line. */
162 const char line_comment_chars[] = "#";
163
164 /* Characters which may be used to separate multiple commands on a
165 single line. */
166 const char line_separator_chars[] = ";";
167
168 /* Characters which are used to indicate an exponent in a floating
169 point number. */
170 const char EXP_CHARS[] = "eE";
171
172 /* Characters which mean that a number is a floating point constant,
173 as in 0d1.0. */
174 const char FLT_CHARS[] = "dD";
175
176 /* Anything that can start an operand needs to be mentioned here,
177 to stop the input scrubber eating whitespace. */
178 const char ppc_symbol_chars[] = "%[";
179
180 /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
181 int ppc_cie_data_alignment;
182
183 /* The type of processor we are assembling for. This is one or more
184 of the PPC_OPCODE flags defined in opcode/ppc.h. */
185 ppc_cpu_t ppc_cpu = 0;
186 \f
187 /* The target specific pseudo-ops which we support. */
188
189 const pseudo_typeS md_pseudo_table[] =
190 {
191 /* Pseudo-ops which must be overridden. */
192 { "byte", ppc_byte, 0 },
193
194 #ifdef OBJ_XCOFF
195 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
196 legitimately belong in the obj-*.c file. However, XCOFF is based
197 on COFF, and is only implemented for the RS/6000. We just use
198 obj-coff.c, and add what we need here. */
199 { "comm", ppc_comm, 0 },
200 { "lcomm", ppc_comm, 1 },
201 { "bb", ppc_bb, 0 },
202 { "bc", ppc_bc, 0 },
203 { "bf", ppc_bf, 0 },
204 { "bi", ppc_biei, 0 },
205 { "bs", ppc_bs, 0 },
206 { "csect", ppc_csect, 0 },
207 { "data", ppc_section, 'd' },
208 { "eb", ppc_eb, 0 },
209 { "ec", ppc_ec, 0 },
210 { "ef", ppc_ef, 0 },
211 { "ei", ppc_biei, 1 },
212 { "es", ppc_es, 0 },
213 { "extern", ppc_extern, 0 },
214 { "function", ppc_function, 0 },
215 { "lglobl", ppc_lglobl, 0 },
216 { "ref", ppc_ref, 0 },
217 { "rename", ppc_rename, 0 },
218 { "section", ppc_named_section, 0 },
219 { "stabx", ppc_stabx, 0 },
220 { "text", ppc_section, 't' },
221 { "toc", ppc_toc, 0 },
222 { "long", ppc_xcoff_cons, 2 },
223 { "llong", ppc_xcoff_cons, 3 },
224 { "word", ppc_xcoff_cons, 1 },
225 { "short", ppc_xcoff_cons, 1 },
226 { "vbyte", ppc_vbyte, 0 },
227 #endif
228
229 #ifdef OBJ_ELF
230 { "llong", ppc_elf_cons, 8 },
231 { "quad", ppc_elf_cons, 8 },
232 { "long", ppc_elf_cons, 4 },
233 { "word", ppc_elf_cons, 2 },
234 { "short", ppc_elf_cons, 2 },
235 { "rdata", ppc_elf_rdata, 0 },
236 { "rodata", ppc_elf_rdata, 0 },
237 { "lcomm", ppc_elf_lcomm, 0 },
238 #endif
239
240 #ifdef TE_PE
241 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
242 { "previous", ppc_previous, 0 },
243 { "pdata", ppc_pdata, 0 },
244 { "ydata", ppc_ydata, 0 },
245 { "reldata", ppc_reldata, 0 },
246 { "rdata", ppc_rdata, 0 },
247 { "ualong", ppc_ualong, 0 },
248 { "znop", ppc_znop, 0 },
249 { "comm", ppc_pe_comm, 0 },
250 { "lcomm", ppc_pe_comm, 1 },
251 { "section", ppc_pe_section, 0 },
252 { "function", ppc_pe_function,0 },
253 { "tocd", ppc_pe_tocd, 0 },
254 #endif
255
256 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
257 { "tc", ppc_tc, 0 },
258 { "machine", ppc_machine, 0 },
259 #endif
260
261 { NULL, NULL, 0 }
262 };
263
264 \f
265 /* Predefined register names if -mregnames (or default for Windows NT).
266 In general, there are lots of them, in an attempt to be compatible
267 with a number of other Windows NT assemblers. */
268
269 /* Structure to hold information about predefined registers. */
270 struct pd_reg
271 {
272 char *name;
273 int value;
274 };
275
276 /* List of registers that are pre-defined:
277
278 Each general register has predefined names of the form:
279 1. r<reg_num> which has the value <reg_num>.
280 2. r.<reg_num> which has the value <reg_num>.
281
282 Each floating point register has predefined names of the form:
283 1. f<reg_num> which has the value <reg_num>.
284 2. f.<reg_num> which has the value <reg_num>.
285
286 Each vector unit register has predefined names of the form:
287 1. v<reg_num> which has the value <reg_num>.
288 2. v.<reg_num> which has the value <reg_num>.
289
290 Each condition register has predefined names of the form:
291 1. cr<reg_num> which has the value <reg_num>.
292 2. cr.<reg_num> which has the value <reg_num>.
293
294 There are individual registers as well:
295 sp or r.sp has the value 1
296 rtoc or r.toc has the value 2
297 fpscr has the value 0
298 xer has the value 1
299 lr has the value 8
300 ctr has the value 9
301 pmr has the value 0
302 dar has the value 19
303 dsisr has the value 18
304 dec has the value 22
305 sdr1 has the value 25
306 srr0 has the value 26
307 srr1 has the value 27
308
309 The table is sorted. Suitable for searching by a binary search. */
310
311 static const struct pd_reg pre_defined_registers[] =
312 {
313 { "cr.0", 0 }, /* Condition Registers */
314 { "cr.1", 1 },
315 { "cr.2", 2 },
316 { "cr.3", 3 },
317 { "cr.4", 4 },
318 { "cr.5", 5 },
319 { "cr.6", 6 },
320 { "cr.7", 7 },
321
322 { "cr0", 0 },
323 { "cr1", 1 },
324 { "cr2", 2 },
325 { "cr3", 3 },
326 { "cr4", 4 },
327 { "cr5", 5 },
328 { "cr6", 6 },
329 { "cr7", 7 },
330
331 { "ctr", 9 },
332
333 { "dar", 19 }, /* Data Access Register */
334 { "dec", 22 }, /* Decrementer */
335 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
336
337 { "f.0", 0 }, /* Floating point registers */
338 { "f.1", 1 },
339 { "f.10", 10 },
340 { "f.11", 11 },
341 { "f.12", 12 },
342 { "f.13", 13 },
343 { "f.14", 14 },
344 { "f.15", 15 },
345 { "f.16", 16 },
346 { "f.17", 17 },
347 { "f.18", 18 },
348 { "f.19", 19 },
349 { "f.2", 2 },
350 { "f.20", 20 },
351 { "f.21", 21 },
352 { "f.22", 22 },
353 { "f.23", 23 },
354 { "f.24", 24 },
355 { "f.25", 25 },
356 { "f.26", 26 },
357 { "f.27", 27 },
358 { "f.28", 28 },
359 { "f.29", 29 },
360 { "f.3", 3 },
361 { "f.30", 30 },
362 { "f.31", 31 },
363
364 { "f.32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
365 { "f.33", 33 },
366 { "f.34", 34 },
367 { "f.35", 35 },
368 { "f.36", 36 },
369 { "f.37", 37 },
370 { "f.38", 38 },
371 { "f.39", 39 },
372 { "f.4", 4 },
373 { "f.40", 40 },
374 { "f.41", 41 },
375 { "f.42", 42 },
376 { "f.43", 43 },
377 { "f.44", 44 },
378 { "f.45", 45 },
379 { "f.46", 46 },
380 { "f.47", 47 },
381 { "f.48", 48 },
382 { "f.49", 49 },
383 { "f.5", 5 },
384 { "f.50", 50 },
385 { "f.51", 51 },
386 { "f.52", 52 },
387 { "f.53", 53 },
388 { "f.54", 54 },
389 { "f.55", 55 },
390 { "f.56", 56 },
391 { "f.57", 57 },
392 { "f.58", 58 },
393 { "f.59", 59 },
394 { "f.6", 6 },
395 { "f.60", 60 },
396 { "f.61", 61 },
397 { "f.62", 62 },
398 { "f.63", 63 },
399 { "f.7", 7 },
400 { "f.8", 8 },
401 { "f.9", 9 },
402
403 { "f0", 0 },
404 { "f1", 1 },
405 { "f10", 10 },
406 { "f11", 11 },
407 { "f12", 12 },
408 { "f13", 13 },
409 { "f14", 14 },
410 { "f15", 15 },
411 { "f16", 16 },
412 { "f17", 17 },
413 { "f18", 18 },
414 { "f19", 19 },
415 { "f2", 2 },
416 { "f20", 20 },
417 { "f21", 21 },
418 { "f22", 22 },
419 { "f23", 23 },
420 { "f24", 24 },
421 { "f25", 25 },
422 { "f26", 26 },
423 { "f27", 27 },
424 { "f28", 28 },
425 { "f29", 29 },
426 { "f3", 3 },
427 { "f30", 30 },
428 { "f31", 31 },
429
430 { "f32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
431 { "f33", 33 },
432 { "f34", 34 },
433 { "f35", 35 },
434 { "f36", 36 },
435 { "f37", 37 },
436 { "f38", 38 },
437 { "f39", 39 },
438 { "f4", 4 },
439 { "f40", 40 },
440 { "f41", 41 },
441 { "f42", 42 },
442 { "f43", 43 },
443 { "f44", 44 },
444 { "f45", 45 },
445 { "f46", 46 },
446 { "f47", 47 },
447 { "f48", 48 },
448 { "f49", 49 },
449 { "f5", 5 },
450 { "f50", 50 },
451 { "f51", 51 },
452 { "f52", 52 },
453 { "f53", 53 },
454 { "f54", 54 },
455 { "f55", 55 },
456 { "f56", 56 },
457 { "f57", 57 },
458 { "f58", 58 },
459 { "f59", 59 },
460 { "f6", 6 },
461 { "f60", 60 },
462 { "f61", 61 },
463 { "f62", 62 },
464 { "f63", 63 },
465 { "f7", 7 },
466 { "f8", 8 },
467 { "f9", 9 },
468
469 { "fpscr", 0 },
470
471 /* Quantization registers used with pair single instructions. */
472 { "gqr.0", 0 },
473 { "gqr.1", 1 },
474 { "gqr.2", 2 },
475 { "gqr.3", 3 },
476 { "gqr.4", 4 },
477 { "gqr.5", 5 },
478 { "gqr.6", 6 },
479 { "gqr.7", 7 },
480 { "gqr0", 0 },
481 { "gqr1", 1 },
482 { "gqr2", 2 },
483 { "gqr3", 3 },
484 { "gqr4", 4 },
485 { "gqr5", 5 },
486 { "gqr6", 6 },
487 { "gqr7", 7 },
488
489 { "lr", 8 }, /* Link Register */
490
491 { "pmr", 0 },
492
493 { "r.0", 0 }, /* General Purpose Registers */
494 { "r.1", 1 },
495 { "r.10", 10 },
496 { "r.11", 11 },
497 { "r.12", 12 },
498 { "r.13", 13 },
499 { "r.14", 14 },
500 { "r.15", 15 },
501 { "r.16", 16 },
502 { "r.17", 17 },
503 { "r.18", 18 },
504 { "r.19", 19 },
505 { "r.2", 2 },
506 { "r.20", 20 },
507 { "r.21", 21 },
508 { "r.22", 22 },
509 { "r.23", 23 },
510 { "r.24", 24 },
511 { "r.25", 25 },
512 { "r.26", 26 },
513 { "r.27", 27 },
514 { "r.28", 28 },
515 { "r.29", 29 },
516 { "r.3", 3 },
517 { "r.30", 30 },
518 { "r.31", 31 },
519 { "r.4", 4 },
520 { "r.5", 5 },
521 { "r.6", 6 },
522 { "r.7", 7 },
523 { "r.8", 8 },
524 { "r.9", 9 },
525
526 { "r.sp", 1 }, /* Stack Pointer */
527
528 { "r.toc", 2 }, /* Pointer to the table of contents */
529
530 { "r0", 0 }, /* More general purpose registers */
531 { "r1", 1 },
532 { "r10", 10 },
533 { "r11", 11 },
534 { "r12", 12 },
535 { "r13", 13 },
536 { "r14", 14 },
537 { "r15", 15 },
538 { "r16", 16 },
539 { "r17", 17 },
540 { "r18", 18 },
541 { "r19", 19 },
542 { "r2", 2 },
543 { "r20", 20 },
544 { "r21", 21 },
545 { "r22", 22 },
546 { "r23", 23 },
547 { "r24", 24 },
548 { "r25", 25 },
549 { "r26", 26 },
550 { "r27", 27 },
551 { "r28", 28 },
552 { "r29", 29 },
553 { "r3", 3 },
554 { "r30", 30 },
555 { "r31", 31 },
556 { "r4", 4 },
557 { "r5", 5 },
558 { "r6", 6 },
559 { "r7", 7 },
560 { "r8", 8 },
561 { "r9", 9 },
562
563 { "rtoc", 2 }, /* Table of contents */
564
565 { "sdr1", 25 }, /* Storage Description Register 1 */
566
567 { "sp", 1 },
568
569 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
570 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
571
572 { "v.0", 0 }, /* Vector (Altivec/VMX) registers */
573 { "v.1", 1 },
574 { "v.10", 10 },
575 { "v.11", 11 },
576 { "v.12", 12 },
577 { "v.13", 13 },
578 { "v.14", 14 },
579 { "v.15", 15 },
580 { "v.16", 16 },
581 { "v.17", 17 },
582 { "v.18", 18 },
583 { "v.19", 19 },
584 { "v.2", 2 },
585 { "v.20", 20 },
586 { "v.21", 21 },
587 { "v.22", 22 },
588 { "v.23", 23 },
589 { "v.24", 24 },
590 { "v.25", 25 },
591 { "v.26", 26 },
592 { "v.27", 27 },
593 { "v.28", 28 },
594 { "v.29", 29 },
595 { "v.3", 3 },
596 { "v.30", 30 },
597 { "v.31", 31 },
598 { "v.4", 4 },
599 { "v.5", 5 },
600 { "v.6", 6 },
601 { "v.7", 7 },
602 { "v.8", 8 },
603 { "v.9", 9 },
604
605 { "v0", 0 },
606 { "v1", 1 },
607 { "v10", 10 },
608 { "v11", 11 },
609 { "v12", 12 },
610 { "v13", 13 },
611 { "v14", 14 },
612 { "v15", 15 },
613 { "v16", 16 },
614 { "v17", 17 },
615 { "v18", 18 },
616 { "v19", 19 },
617 { "v2", 2 },
618 { "v20", 20 },
619 { "v21", 21 },
620 { "v22", 22 },
621 { "v23", 23 },
622 { "v24", 24 },
623 { "v25", 25 },
624 { "v26", 26 },
625 { "v27", 27 },
626 { "v28", 28 },
627 { "v29", 29 },
628 { "v3", 3 },
629 { "v30", 30 },
630 { "v31", 31 },
631 { "v4", 4 },
632 { "v5", 5 },
633 { "v6", 6 },
634 { "v7", 7 },
635 { "v8", 8 },
636 { "v9", 9 },
637
638 { "vs.0", 0 }, /* Vector Scalar (VSX) registers (ISA 2.06). */
639 { "vs.1", 1 },
640 { "vs.10", 10 },
641 { "vs.11", 11 },
642 { "vs.12", 12 },
643 { "vs.13", 13 },
644 { "vs.14", 14 },
645 { "vs.15", 15 },
646 { "vs.16", 16 },
647 { "vs.17", 17 },
648 { "vs.18", 18 },
649 { "vs.19", 19 },
650 { "vs.2", 2 },
651 { "vs.20", 20 },
652 { "vs.21", 21 },
653 { "vs.22", 22 },
654 { "vs.23", 23 },
655 { "vs.24", 24 },
656 { "vs.25", 25 },
657 { "vs.26", 26 },
658 { "vs.27", 27 },
659 { "vs.28", 28 },
660 { "vs.29", 29 },
661 { "vs.3", 3 },
662 { "vs.30", 30 },
663 { "vs.31", 31 },
664 { "vs.32", 32 },
665 { "vs.33", 33 },
666 { "vs.34", 34 },
667 { "vs.35", 35 },
668 { "vs.36", 36 },
669 { "vs.37", 37 },
670 { "vs.38", 38 },
671 { "vs.39", 39 },
672 { "vs.4", 4 },
673 { "vs.40", 40 },
674 { "vs.41", 41 },
675 { "vs.42", 42 },
676 { "vs.43", 43 },
677 { "vs.44", 44 },
678 { "vs.45", 45 },
679 { "vs.46", 46 },
680 { "vs.47", 47 },
681 { "vs.48", 48 },
682 { "vs.49", 49 },
683 { "vs.5", 5 },
684 { "vs.50", 50 },
685 { "vs.51", 51 },
686 { "vs.52", 52 },
687 { "vs.53", 53 },
688 { "vs.54", 54 },
689 { "vs.55", 55 },
690 { "vs.56", 56 },
691 { "vs.57", 57 },
692 { "vs.58", 58 },
693 { "vs.59", 59 },
694 { "vs.6", 6 },
695 { "vs.60", 60 },
696 { "vs.61", 61 },
697 { "vs.62", 62 },
698 { "vs.63", 63 },
699 { "vs.7", 7 },
700 { "vs.8", 8 },
701 { "vs.9", 9 },
702
703 { "vs0", 0 },
704 { "vs1", 1 },
705 { "vs10", 10 },
706 { "vs11", 11 },
707 { "vs12", 12 },
708 { "vs13", 13 },
709 { "vs14", 14 },
710 { "vs15", 15 },
711 { "vs16", 16 },
712 { "vs17", 17 },
713 { "vs18", 18 },
714 { "vs19", 19 },
715 { "vs2", 2 },
716 { "vs20", 20 },
717 { "vs21", 21 },
718 { "vs22", 22 },
719 { "vs23", 23 },
720 { "vs24", 24 },
721 { "vs25", 25 },
722 { "vs26", 26 },
723 { "vs27", 27 },
724 { "vs28", 28 },
725 { "vs29", 29 },
726 { "vs3", 3 },
727 { "vs30", 30 },
728 { "vs31", 31 },
729 { "vs32", 32 },
730 { "vs33", 33 },
731 { "vs34", 34 },
732 { "vs35", 35 },
733 { "vs36", 36 },
734 { "vs37", 37 },
735 { "vs38", 38 },
736 { "vs39", 39 },
737 { "vs4", 4 },
738 { "vs40", 40 },
739 { "vs41", 41 },
740 { "vs42", 42 },
741 { "vs43", 43 },
742 { "vs44", 44 },
743 { "vs45", 45 },
744 { "vs46", 46 },
745 { "vs47", 47 },
746 { "vs48", 48 },
747 { "vs49", 49 },
748 { "vs5", 5 },
749 { "vs50", 50 },
750 { "vs51", 51 },
751 { "vs52", 52 },
752 { "vs53", 53 },
753 { "vs54", 54 },
754 { "vs55", 55 },
755 { "vs56", 56 },
756 { "vs57", 57 },
757 { "vs58", 58 },
758 { "vs59", 59 },
759 { "vs6", 6 },
760 { "vs60", 60 },
761 { "vs61", 61 },
762 { "vs62", 62 },
763 { "vs63", 63 },
764 { "vs7", 7 },
765 { "vs8", 8 },
766 { "vs9", 9 },
767
768 { "xer", 1 },
769
770 };
771
772 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
773
774 /* Given NAME, find the register number associated with that name, return
775 the integer value associated with the given name or -1 on failure. */
776
777 static int
778 reg_name_search (const struct pd_reg *regs, int regcount, const char *name)
779 {
780 int middle, low, high;
781 int cmp;
782
783 low = 0;
784 high = regcount - 1;
785
786 do
787 {
788 middle = (low + high) / 2;
789 cmp = strcasecmp (name, regs[middle].name);
790 if (cmp < 0)
791 high = middle - 1;
792 else if (cmp > 0)
793 low = middle + 1;
794 else
795 return regs[middle].value;
796 }
797 while (low <= high);
798
799 return -1;
800 }
801
802 /*
803 * Summary of register_name.
804 *
805 * in: Input_line_pointer points to 1st char of operand.
806 *
807 * out: A expressionS.
808 * The operand may have been a register: in this case, X_op == O_register,
809 * X_add_number is set to the register number, and truth is returned.
810 * Input_line_pointer->(next non-blank) char after operand, or is in its
811 * original state.
812 */
813
814 static bfd_boolean
815 register_name (expressionS *expressionP)
816 {
817 int reg_number;
818 char *name;
819 char *start;
820 char c;
821
822 /* Find the spelling of the operand. */
823 start = name = input_line_pointer;
824 if (name[0] == '%' && ISALPHA (name[1]))
825 name = ++input_line_pointer;
826
827 else if (!reg_names_p || !ISALPHA (name[0]))
828 return FALSE;
829
830 c = get_symbol_end ();
831 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
832
833 /* Put back the delimiting char. */
834 *input_line_pointer = c;
835
836 /* Look to see if it's in the register table. */
837 if (reg_number >= 0)
838 {
839 expressionP->X_op = O_register;
840 expressionP->X_add_number = reg_number;
841
842 /* Make the rest nice. */
843 expressionP->X_add_symbol = NULL;
844 expressionP->X_op_symbol = NULL;
845 return TRUE;
846 }
847
848 /* Reset the line as if we had not done anything. */
849 input_line_pointer = start;
850 return FALSE;
851 }
852 \f
853 /* This function is called for each symbol seen in an expression. It
854 handles the special parsing which PowerPC assemblers are supposed
855 to use for condition codes. */
856
857 /* Whether to do the special parsing. */
858 static bfd_boolean cr_operand;
859
860 /* Names to recognize in a condition code. This table is sorted. */
861 static const struct pd_reg cr_names[] =
862 {
863 { "cr0", 0 },
864 { "cr1", 1 },
865 { "cr2", 2 },
866 { "cr3", 3 },
867 { "cr4", 4 },
868 { "cr5", 5 },
869 { "cr6", 6 },
870 { "cr7", 7 },
871 { "eq", 2 },
872 { "gt", 1 },
873 { "lt", 0 },
874 { "so", 3 },
875 { "un", 3 }
876 };
877
878 /* Parsing function. This returns non-zero if it recognized an
879 expression. */
880
881 int
882 ppc_parse_name (const char *name, expressionS *exp)
883 {
884 int val;
885
886 if (! cr_operand)
887 return 0;
888
889 if (*name == '%')
890 ++name;
891 val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0],
892 name);
893 if (val < 0)
894 return 0;
895
896 exp->X_op = O_constant;
897 exp->X_add_number = val;
898
899 return 1;
900 }
901 \f
902 /* Local variables. */
903
904 /* Whether to target xcoff64/elf64. */
905 static unsigned int ppc_obj64 = BFD_DEFAULT_TARGET_SIZE == 64;
906
907 /* Opcode hash table. */
908 static struct hash_control *ppc_hash;
909
910 /* Macro hash table. */
911 static struct hash_control *ppc_macro_hash;
912
913 #ifdef OBJ_ELF
914 /* What type of shared library support to use. */
915 static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE;
916
917 /* Flags to set in the elf header. */
918 static flagword ppc_flags = 0;
919
920 /* Whether this is Solaris or not. */
921 #ifdef TARGET_SOLARIS_COMMENT
922 #define SOLARIS_P TRUE
923 #else
924 #define SOLARIS_P FALSE
925 #endif
926
927 static bfd_boolean msolaris = SOLARIS_P;
928 #endif
929
930 #ifdef OBJ_XCOFF
931
932 /* The RS/6000 assembler uses the .csect pseudo-op to generate code
933 using a bunch of different sections. These assembler sections,
934 however, are all encompassed within the .text or .data sections of
935 the final output file. We handle this by using different
936 subsegments within these main segments. */
937
938 /* Next subsegment to allocate within the .text segment. */
939 static subsegT ppc_text_subsegment = 2;
940
941 /* Linked list of csects in the text section. */
942 static symbolS *ppc_text_csects;
943
944 /* Next subsegment to allocate within the .data segment. */
945 static subsegT ppc_data_subsegment = 2;
946
947 /* Linked list of csects in the data section. */
948 static symbolS *ppc_data_csects;
949
950 /* The current csect. */
951 static symbolS *ppc_current_csect;
952
953 /* The RS/6000 assembler uses a TOC which holds addresses of functions
954 and variables. Symbols are put in the TOC with the .tc pseudo-op.
955 A special relocation is used when accessing TOC entries. We handle
956 the TOC as a subsegment within the .data segment. We set it up if
957 we see a .toc pseudo-op, and save the csect symbol here. */
958 static symbolS *ppc_toc_csect;
959
960 /* The first frag in the TOC subsegment. */
961 static fragS *ppc_toc_frag;
962
963 /* The first frag in the first subsegment after the TOC in the .data
964 segment. NULL if there are no subsegments after the TOC. */
965 static fragS *ppc_after_toc_frag;
966
967 /* The current static block. */
968 static symbolS *ppc_current_block;
969
970 /* The COFF debugging section; set by md_begin. This is not the
971 .debug section, but is instead the secret BFD section which will
972 cause BFD to set the section number of a symbol to N_DEBUG. */
973 static asection *ppc_coff_debug_section;
974
975 #endif /* OBJ_XCOFF */
976
977 #ifdef TE_PE
978
979 /* Various sections that we need for PE coff support. */
980 static segT ydata_section;
981 static segT pdata_section;
982 static segT reldata_section;
983 static segT rdata_section;
984 static segT tocdata_section;
985
986 /* The current section and the previous section. See ppc_previous. */
987 static segT ppc_previous_section;
988 static segT ppc_current_section;
989
990 #endif /* TE_PE */
991
992 #ifdef OBJ_ELF
993 symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
994 #define PPC_APUINFO_ISEL 0x40
995 #define PPC_APUINFO_PMR 0x41
996 #define PPC_APUINFO_RFMCI 0x42
997 #define PPC_APUINFO_CACHELCK 0x43
998 #define PPC_APUINFO_SPE 0x100
999 #define PPC_APUINFO_EFS 0x101
1000 #define PPC_APUINFO_BRLOCK 0x102
1001
1002 /*
1003 * We keep a list of APUinfo
1004 */
1005 unsigned long *ppc_apuinfo_list;
1006 unsigned int ppc_apuinfo_num;
1007 unsigned int ppc_apuinfo_num_alloc;
1008 #endif /* OBJ_ELF */
1009 \f
1010 #ifdef OBJ_ELF
1011 const char *const md_shortopts = "b:l:usm:K:VQ:";
1012 #else
1013 const char *const md_shortopts = "um:";
1014 #endif
1015 const struct option md_longopts[] = {
1016 {NULL, no_argument, NULL, 0}
1017 };
1018 const size_t md_longopts_size = sizeof (md_longopts);
1019
1020 int
1021 md_parse_option (int c, char *arg)
1022 {
1023 ppc_cpu_t new_cpu;
1024
1025 switch (c)
1026 {
1027 case 'u':
1028 /* -u means that any undefined symbols should be treated as
1029 external, which is the default for gas anyhow. */
1030 break;
1031
1032 #ifdef OBJ_ELF
1033 case 'l':
1034 /* Solaris as takes -le (presumably for little endian). For completeness
1035 sake, recognize -be also. */
1036 if (strcmp (arg, "e") == 0)
1037 {
1038 target_big_endian = 0;
1039 set_target_endian = 1;
1040 }
1041 else
1042 return 0;
1043
1044 break;
1045
1046 case 'b':
1047 if (strcmp (arg, "e") == 0)
1048 {
1049 target_big_endian = 1;
1050 set_target_endian = 1;
1051 }
1052 else
1053 return 0;
1054
1055 break;
1056
1057 case 'K':
1058 /* Recognize -K PIC. */
1059 if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
1060 {
1061 shlib = SHLIB_PIC;
1062 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
1063 }
1064 else
1065 return 0;
1066
1067 break;
1068 #endif
1069
1070 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
1071 case 'a':
1072 if (strcmp (arg, "64") == 0)
1073 {
1074 #ifdef BFD64
1075 ppc_obj64 = 1;
1076 #else
1077 as_fatal (_("%s unsupported"), "-a64");
1078 #endif
1079 }
1080 else if (strcmp (arg, "32") == 0)
1081 ppc_obj64 = 0;
1082 else
1083 return 0;
1084 break;
1085
1086 case 'm':
1087 if ((new_cpu = ppc_parse_cpu (ppc_cpu, arg)) != 0)
1088 ppc_cpu = new_cpu;
1089
1090 else if (strcmp (arg, "regnames") == 0)
1091 reg_names_p = TRUE;
1092
1093 else if (strcmp (arg, "no-regnames") == 0)
1094 reg_names_p = FALSE;
1095
1096 #ifdef OBJ_ELF
1097 /* -mrelocatable/-mrelocatable-lib -- warn about initializations
1098 that require relocation. */
1099 else if (strcmp (arg, "relocatable") == 0)
1100 {
1101 shlib = SHLIB_MRELOCATABLE;
1102 ppc_flags |= EF_PPC_RELOCATABLE;
1103 }
1104
1105 else if (strcmp (arg, "relocatable-lib") == 0)
1106 {
1107 shlib = SHLIB_MRELOCATABLE;
1108 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
1109 }
1110
1111 /* -memb, set embedded bit. */
1112 else if (strcmp (arg, "emb") == 0)
1113 ppc_flags |= EF_PPC_EMB;
1114
1115 /* -mlittle/-mbig set the endianess. */
1116 else if (strcmp (arg, "little") == 0
1117 || strcmp (arg, "little-endian") == 0)
1118 {
1119 target_big_endian = 0;
1120 set_target_endian = 1;
1121 }
1122
1123 else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
1124 {
1125 target_big_endian = 1;
1126 set_target_endian = 1;
1127 }
1128
1129 else if (strcmp (arg, "solaris") == 0)
1130 {
1131 msolaris = TRUE;
1132 ppc_comment_chars = ppc_solaris_comment_chars;
1133 }
1134
1135 else if (strcmp (arg, "no-solaris") == 0)
1136 {
1137 msolaris = FALSE;
1138 ppc_comment_chars = ppc_eabi_comment_chars;
1139 }
1140 #endif
1141 else
1142 {
1143 as_bad (_("invalid switch -m%s"), arg);
1144 return 0;
1145 }
1146 break;
1147
1148 #ifdef OBJ_ELF
1149 /* -V: SVR4 argument to print version ID. */
1150 case 'V':
1151 print_version_id ();
1152 break;
1153
1154 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
1155 should be emitted or not. FIXME: Not implemented. */
1156 case 'Q':
1157 break;
1158
1159 /* Solaris takes -s to specify that .stabs go in a .stabs section,
1160 rather than .stabs.excl, which is ignored by the linker.
1161 FIXME: Not implemented. */
1162 case 's':
1163 if (arg)
1164 return 0;
1165
1166 break;
1167 #endif
1168
1169 default:
1170 return 0;
1171 }
1172
1173 return 1;
1174 }
1175
1176 void
1177 md_show_usage (FILE *stream)
1178 {
1179 fprintf (stream, _("\
1180 PowerPC options:\n\
1181 -a32 generate ELF32/XCOFF32\n\
1182 -a64 generate ELF64/XCOFF64\n\
1183 -u ignored\n\
1184 -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\
1185 -mpwr generate code for POWER (RIOS1)\n\
1186 -m601 generate code for PowerPC 601\n\
1187 -mppc, -mppc32, -m603, -m604\n\
1188 generate code for PowerPC 603/604\n\
1189 -m403 generate code for PowerPC 403\n\
1190 -m405 generate code for PowerPC 405\n\
1191 -m440 generate code for PowerPC 440\n\
1192 -m464 generate code for PowerPC 464\n\
1193 -m476 generate code for PowerPC 476\n\
1194 -m7400, -m7410, -m7450, -m7455\n\
1195 generate code for PowerPC 7400/7410/7450/7455\n\
1196 -m750cl generate code for PowerPC 750cl\n"));
1197 fprintf (stream, _("\
1198 -mppc64, -m620 generate code for PowerPC 620/625/630\n\
1199 -mppc64bridge generate code for PowerPC 64, including bridge insns\n\
1200 -mbooke generate code for 32-bit PowerPC BookE\n\
1201 -ma2 generate code for A2 architecture\n\
1202 -mpower4, -mpwr4 generate code for Power4 architecture\n\
1203 -mpower5, -mpwr5, -mpwr5x\n\
1204 generate code for Power5 architecture\n\
1205 -mpower6, -mpwr6 generate code for Power6 architecture\n\
1206 -mpower7, -mpwr7 generate code for Power7 architecture\n\
1207 -mcell generate code for Cell Broadband Engine architecture\n\
1208 -mcom generate code Power/PowerPC common instructions\n\
1209 -many generate code for any architecture (PWR/PWRX/PPC)\n"));
1210 fprintf (stream, _("\
1211 -maltivec generate code for AltiVec\n\
1212 -mvsx generate code for Vector-Scalar (VSX) instructions\n\
1213 -me300 generate code for PowerPC e300 family\n\
1214 -me500, -me500x2 generate code for Motorola e500 core complex\n\
1215 -me500mc, generate code for Freescale e500mc core complex\n\
1216 -me500mc64, generate code for Freescale e500mc64 core complex\n\
1217 -mspe generate code for Motorola SPE instructions\n\
1218 -mtitan generate code for AppliedMicro Titan core complex\n\
1219 -mregnames Allow symbolic names for registers\n\
1220 -mno-regnames Do not allow symbolic names for registers\n"));
1221 #ifdef OBJ_ELF
1222 fprintf (stream, _("\
1223 -mrelocatable support for GCC's -mrelocatble option\n\
1224 -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
1225 -memb set PPC_EMB bit in ELF flags\n\
1226 -mlittle, -mlittle-endian, -l, -le\n\
1227 generate code for a little endian machine\n\
1228 -mbig, -mbig-endian, -b, -be\n\
1229 generate code for a big endian machine\n\
1230 -msolaris generate code for Solaris\n\
1231 -mno-solaris do not generate code for Solaris\n\
1232 -V print assembler version number\n\
1233 -Qy, -Qn ignored\n"));
1234 #endif
1235 }
1236 \f
1237 /* Set ppc_cpu if it is not already set. */
1238
1239 static void
1240 ppc_set_cpu (void)
1241 {
1242 const char *default_os = TARGET_OS;
1243 const char *default_cpu = TARGET_CPU;
1244
1245 if ((ppc_cpu & ~PPC_OPCODE_ANY) == 0)
1246 {
1247 if (ppc_obj64)
1248 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64;
1249 else if (strncmp (default_os, "aix", 3) == 0
1250 && default_os[3] >= '4' && default_os[3] <= '9')
1251 ppc_cpu |= PPC_OPCODE_COMMON | PPC_OPCODE_32;
1252 else if (strncmp (default_os, "aix3", 4) == 0)
1253 ppc_cpu |= PPC_OPCODE_POWER | PPC_OPCODE_32;
1254 else if (strcmp (default_cpu, "rs6000") == 0)
1255 ppc_cpu |= PPC_OPCODE_POWER | PPC_OPCODE_32;
1256 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1257 ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32;
1258 else
1259 as_fatal (_("Unknown default cpu = %s, os = %s"),
1260 default_cpu, default_os);
1261 }
1262 }
1263
1264 /* Figure out the BFD architecture to use. This function and ppc_mach
1265 are called well before md_begin, when the output file is opened. */
1266
1267 enum bfd_architecture
1268 ppc_arch (void)
1269 {
1270 const char *default_cpu = TARGET_CPU;
1271 ppc_set_cpu ();
1272
1273 if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
1274 return bfd_arch_powerpc;
1275 else if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
1276 return bfd_arch_rs6000;
1277 else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
1278 {
1279 if (strcmp (default_cpu, "rs6000") == 0)
1280 return bfd_arch_rs6000;
1281 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1282 return bfd_arch_powerpc;
1283 }
1284
1285 as_fatal (_("Neither Power nor PowerPC opcodes were selected."));
1286 return bfd_arch_unknown;
1287 }
1288
1289 unsigned long
1290 ppc_mach (void)
1291 {
1292 if (ppc_obj64)
1293 return bfd_mach_ppc64;
1294 else if (ppc_arch () == bfd_arch_rs6000)
1295 return bfd_mach_rs6k;
1296 else if (ppc_cpu & PPC_OPCODE_TITAN)
1297 return bfd_mach_ppc_titan;
1298 else
1299 return bfd_mach_ppc;
1300 }
1301
1302 extern char*
1303 ppc_target_format (void)
1304 {
1305 #ifdef OBJ_COFF
1306 #ifdef TE_PE
1307 return target_big_endian ? "pe-powerpc" : "pe-powerpcle";
1308 #elif TE_POWERMAC
1309 return "xcoff-powermac";
1310 #else
1311 # ifdef TE_AIX5
1312 return (ppc_obj64 ? "aix5coff64-rs6000" : "aixcoff-rs6000");
1313 # else
1314 return (ppc_obj64 ? "aixcoff64-rs6000" : "aixcoff-rs6000");
1315 # endif
1316 #endif
1317 #endif
1318 #ifdef OBJ_ELF
1319 # ifdef TE_VXWORKS
1320 return "elf32-powerpc-vxworks";
1321 # else
1322 return (target_big_endian
1323 ? (ppc_obj64 ? "elf64-powerpc" : "elf32-powerpc")
1324 : (ppc_obj64 ? "elf64-powerpcle" : "elf32-powerpcle"));
1325 # endif
1326 #endif
1327 }
1328
1329 /* Insert opcodes and macros into hash tables. Called at startup and
1330 for .cpu pseudo. */
1331
1332 static void
1333 ppc_setup_opcodes (void)
1334 {
1335 const struct powerpc_opcode *op;
1336 const struct powerpc_opcode *op_end;
1337 const struct powerpc_macro *macro;
1338 const struct powerpc_macro *macro_end;
1339 bfd_boolean bad_insn = FALSE;
1340
1341 if (ppc_hash != NULL)
1342 hash_die (ppc_hash);
1343 if (ppc_macro_hash != NULL)
1344 hash_die (ppc_macro_hash);
1345
1346 /* Insert the opcodes into a hash table. */
1347 ppc_hash = hash_new ();
1348
1349 if (ENABLE_CHECKING)
1350 {
1351 unsigned int i;
1352
1353 /* Check operand masks. Code here and in the disassembler assumes
1354 all the 1's in the mask are contiguous. */
1355 for (i = 0; i < num_powerpc_operands; ++i)
1356 {
1357 unsigned long mask = powerpc_operands[i].bitm;
1358 unsigned long right_bit;
1359 unsigned int j;
1360
1361 right_bit = mask & -mask;
1362 mask += right_bit;
1363 right_bit = mask & -mask;
1364 if (mask != right_bit)
1365 {
1366 as_bad (_("powerpc_operands[%d].bitm invalid"), i);
1367 bad_insn = TRUE;
1368 }
1369 for (j = i + 1; j < num_powerpc_operands; ++j)
1370 if (memcmp (&powerpc_operands[i], &powerpc_operands[j],
1371 sizeof (powerpc_operands[0])) == 0)
1372 {
1373 as_bad (_("powerpc_operands[%d] duplicates powerpc_operands[%d]"),
1374 j, i);
1375 bad_insn = TRUE;
1376 }
1377 }
1378 }
1379
1380 op_end = powerpc_opcodes + powerpc_num_opcodes;
1381 for (op = powerpc_opcodes; op < op_end; op++)
1382 {
1383 if (ENABLE_CHECKING)
1384 {
1385 const unsigned char *o;
1386 unsigned long omask = op->mask;
1387
1388 if (op != powerpc_opcodes)
1389 {
1390 /* The major opcodes had better be sorted. Code in the
1391 disassembler assumes the insns are sorted according to
1392 major opcode. */
1393 if (PPC_OP (op[0].opcode) < PPC_OP (op[-1].opcode))
1394 {
1395 as_bad (_("major opcode is not sorted for %s"),
1396 op->name);
1397 bad_insn = TRUE;
1398 }
1399
1400 /* Warn if the table isn't more strictly ordered.
1401 Unfortunately it doesn't seem possible to order the
1402 table on much more than the major opcode, which makes
1403 it difficult to implement a binary search in the
1404 disassembler. The problem is that we have multiple
1405 ways to disassemble instructions, and we usually want
1406 to choose a more specific form (with more bits set in
1407 the opcode) than a more general form. eg. all of the
1408 following are equivalent:
1409 bne label # opcode = 0x40820000, mask = 0xff830003
1410 bf 2,label # opcode = 0x40800000, mask = 0xff800003
1411 bc 4,2,label # opcode = 0x40000000, mask = 0xfc000003
1412
1413 There are also cases where the table needs to be out
1414 of order to disassemble the correct instruction for
1415 processor variants. */
1416 else if (0)
1417 {
1418 unsigned long t1 = op[0].opcode;
1419 unsigned long t2 = op[-1].opcode;
1420
1421 if (((t1 ^ t2) & 0xfc0007ff) == 0
1422 && (t1 & 0xfc0006df) == 0x7c000286)
1423 {
1424 /* spr field is split. */
1425 t1 = ((t1 & ~0x1ff800)
1426 | ((t1 & 0xf800) << 5) | ((t1 & 0x1f0000) >> 5));
1427 t2 = ((t2 & ~0x1ff800)
1428 | ((t2 & 0xf800) << 5) | ((t2 & 0x1f0000) >> 5));
1429 }
1430 if (t1 < t2)
1431 as_warn (_("%s (%08lx %08lx) after %s (%08lx %08lx)"),
1432 op[0].name, op[0].opcode, op[0].mask,
1433 op[-1].name, op[-1].opcode, op[-1].mask);
1434 }
1435 }
1436
1437 /* The mask had better not trim off opcode bits. */
1438 if ((op->opcode & omask) != op->opcode)
1439 {
1440 as_bad (_("mask trims opcode bits for %s"),
1441 op->name);
1442 bad_insn = TRUE;
1443 }
1444
1445 /* The operands must not overlap the opcode or each other. */
1446 for (o = op->operands; *o; ++o)
1447 if (*o >= num_powerpc_operands)
1448 {
1449 as_bad (_("operand index error for %s"),
1450 op->name);
1451 bad_insn = TRUE;
1452 }
1453 else
1454 {
1455 const struct powerpc_operand *operand = &powerpc_operands[*o];
1456 if (operand->shift >= 0)
1457 {
1458 unsigned long mask = operand->bitm << operand->shift;
1459 if (omask & mask)
1460 {
1461 as_bad (_("operand %d overlap in %s"),
1462 (int) (o - op->operands), op->name);
1463 bad_insn = TRUE;
1464 }
1465 omask |= mask;
1466 }
1467 }
1468 }
1469
1470 if ((op->flags & ppc_cpu & ~(PPC_OPCODE_32 | PPC_OPCODE_64)) != 0
1471 && ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0
1472 || ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64))
1473 == (ppc_cpu & (PPC_OPCODE_32 | PPC_OPCODE_64)))
1474 || (ppc_cpu & PPC_OPCODE_64_BRIDGE) != 0)
1475 && !(ppc_cpu & op->deprecated))
1476 {
1477 const char *retval;
1478
1479 retval = hash_insert (ppc_hash, op->name, (void *) op);
1480 if (retval != NULL)
1481 {
1482 /* Ignore Power duplicates for -m601. */
1483 if ((ppc_cpu & PPC_OPCODE_601) != 0
1484 && (op->flags & PPC_OPCODE_POWER) != 0)
1485 continue;
1486
1487 as_bad (_("duplicate instruction %s"),
1488 op->name);
1489 bad_insn = TRUE;
1490 }
1491 }
1492 }
1493
1494 if ((ppc_cpu & PPC_OPCODE_ANY) != 0)
1495 for (op = powerpc_opcodes; op < op_end; op++)
1496 hash_insert (ppc_hash, op->name, (void *) op);
1497
1498 /* Insert the macros into a hash table. */
1499 ppc_macro_hash = hash_new ();
1500
1501 macro_end = powerpc_macros + powerpc_num_macros;
1502 for (macro = powerpc_macros; macro < macro_end; macro++)
1503 {
1504 if ((macro->flags & ppc_cpu) != 0)
1505 {
1506 const char *retval;
1507
1508 retval = hash_insert (ppc_macro_hash, macro->name, (void *) macro);
1509 if (retval != (const char *) NULL)
1510 {
1511 as_bad (_("duplicate macro %s"), macro->name);
1512 bad_insn = TRUE;
1513 }
1514 }
1515 }
1516
1517 if (bad_insn)
1518 abort ();
1519 }
1520
1521 /* This function is called when the assembler starts up. It is called
1522 after the options have been parsed and the output file has been
1523 opened. */
1524
1525 void
1526 md_begin (void)
1527 {
1528 ppc_set_cpu ();
1529
1530 ppc_cie_data_alignment = ppc_obj64 ? -8 : -4;
1531
1532 #ifdef OBJ_ELF
1533 /* Set the ELF flags if desired. */
1534 if (ppc_flags && !msolaris)
1535 bfd_set_private_flags (stdoutput, ppc_flags);
1536 #endif
1537
1538 ppc_setup_opcodes ();
1539
1540 /* Tell the main code what the endianness is if it is not overridden
1541 by the user. */
1542 if (!set_target_endian)
1543 {
1544 set_target_endian = 1;
1545 target_big_endian = PPC_BIG_ENDIAN;
1546 }
1547
1548 #ifdef OBJ_XCOFF
1549 ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
1550
1551 /* Create dummy symbols to serve as initial csects. This forces the
1552 text csects to precede the data csects. These symbols will not
1553 be output. */
1554 ppc_text_csects = symbol_make ("dummy\001");
1555 symbol_get_tc (ppc_text_csects)->within = ppc_text_csects;
1556 ppc_data_csects = symbol_make ("dummy\001");
1557 symbol_get_tc (ppc_data_csects)->within = ppc_data_csects;
1558 #endif
1559
1560 #ifdef TE_PE
1561
1562 ppc_current_section = text_section;
1563 ppc_previous_section = 0;
1564
1565 #endif
1566 }
1567
1568 void
1569 ppc_cleanup (void)
1570 {
1571 #ifdef OBJ_ELF
1572 if (ppc_apuinfo_list == NULL)
1573 return;
1574
1575 /* Ok, so write the section info out. We have this layout:
1576
1577 byte data what
1578 ---- ---- ----
1579 0 8 length of "APUinfo\0"
1580 4 (n*4) number of APU's (4 bytes each)
1581 8 2 note type 2
1582 12 "APUinfo\0" name
1583 20 APU#1 first APU's info
1584 24 APU#2 second APU's info
1585 ... ...
1586 */
1587 {
1588 char *p;
1589 asection *seg = now_seg;
1590 subsegT subseg = now_subseg;
1591 asection *apuinfo_secp = (asection *) NULL;
1592 unsigned int i;
1593
1594 /* Create the .PPC.EMB.apuinfo section. */
1595 apuinfo_secp = subseg_new (".PPC.EMB.apuinfo", 0);
1596 bfd_set_section_flags (stdoutput,
1597 apuinfo_secp,
1598 SEC_HAS_CONTENTS | SEC_READONLY);
1599
1600 p = frag_more (4);
1601 md_number_to_chars (p, (valueT) 8, 4);
1602
1603 p = frag_more (4);
1604 md_number_to_chars (p, (valueT) ppc_apuinfo_num * 4, 4);
1605
1606 p = frag_more (4);
1607 md_number_to_chars (p, (valueT) 2, 4);
1608
1609 p = frag_more (8);
1610 strcpy (p, "APUinfo");
1611
1612 for (i = 0; i < ppc_apuinfo_num; i++)
1613 {
1614 p = frag_more (4);
1615 md_number_to_chars (p, (valueT) ppc_apuinfo_list[i], 4);
1616 }
1617
1618 frag_align (2, 0, 0);
1619
1620 /* We probably can't restore the current segment, for there likely
1621 isn't one yet... */
1622 if (seg && subseg)
1623 subseg_set (seg, subseg);
1624 }
1625 #endif
1626 }
1627
1628 /* Insert an operand value into an instruction. */
1629
1630 static unsigned long
1631 ppc_insert_operand (unsigned long insn,
1632 const struct powerpc_operand *operand,
1633 offsetT val,
1634 ppc_cpu_t cpu,
1635 char *file,
1636 unsigned int line)
1637 {
1638 long min, max, right;
1639
1640 max = operand->bitm;
1641 right = max & -max;
1642 min = 0;
1643
1644 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
1645 {
1646 if ((operand->flags & PPC_OPERAND_SIGNOPT) == 0)
1647 max = (max >> 1) & -right;
1648 min = ~max & -right;
1649 }
1650
1651 if ((operand->flags & PPC_OPERAND_PLUS1) != 0)
1652 max++;
1653
1654 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
1655 {
1656 long tmp = min;
1657 min = -max;
1658 max = -tmp;
1659 }
1660
1661 if (min <= max)
1662 {
1663 /* Some people write constants with the sign extension done by
1664 hand but only up to 32 bits. This shouldn't really be valid,
1665 but, to permit this code to assemble on a 64-bit host, we
1666 sign extend the 32-bit value to 64 bits if so doing makes the
1667 value valid. */
1668 if (val > max
1669 && (offsetT) (val - 0x80000000 - 0x80000000) >= min
1670 && (offsetT) (val - 0x80000000 - 0x80000000) <= max
1671 && ((val - 0x80000000 - 0x80000000) & (right - 1)) == 0)
1672 val = val - 0x80000000 - 0x80000000;
1673
1674 /* Similarly, people write expressions like ~(1<<15), and expect
1675 this to be OK for a 32-bit unsigned value. */
1676 else if (val < min
1677 && (offsetT) (val + 0x80000000 + 0x80000000) >= min
1678 && (offsetT) (val + 0x80000000 + 0x80000000) <= max
1679 && ((val + 0x80000000 + 0x80000000) & (right - 1)) == 0)
1680 val = val + 0x80000000 + 0x80000000;
1681
1682 else if (val < min
1683 || val > max
1684 || (val & (right - 1)) != 0)
1685 as_bad_value_out_of_range (_("operand"), val, min, max, file, line);
1686 }
1687
1688 if (operand->insert)
1689 {
1690 const char *errmsg;
1691
1692 errmsg = NULL;
1693 insn = (*operand->insert) (insn, (long) val, cpu, &errmsg);
1694 if (errmsg != (const char *) NULL)
1695 as_bad_where (file, line, "%s", errmsg);
1696 }
1697 else
1698 insn |= ((long) val & operand->bitm) << operand->shift;
1699
1700 return insn;
1701 }
1702
1703 \f
1704 #ifdef OBJ_ELF
1705 /* Parse @got, etc. and return the desired relocation. */
1706 static bfd_reloc_code_real_type
1707 ppc_elf_suffix (char **str_p, expressionS *exp_p)
1708 {
1709 struct map_bfd {
1710 char *string;
1711 unsigned int length : 8;
1712 unsigned int valid32 : 1;
1713 unsigned int valid64 : 1;
1714 unsigned int reloc;
1715 };
1716
1717 char ident[20];
1718 char *str = *str_p;
1719 char *str2;
1720 int ch;
1721 int len;
1722 const struct map_bfd *ptr;
1723
1724 #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc }
1725 #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc }
1726 #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc }
1727
1728 static const struct map_bfd mapping[] = {
1729 MAP ("l", BFD_RELOC_LO16),
1730 MAP ("h", BFD_RELOC_HI16),
1731 MAP ("ha", BFD_RELOC_HI16_S),
1732 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN),
1733 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN),
1734 MAP ("got", BFD_RELOC_16_GOTOFF),
1735 MAP ("got@l", BFD_RELOC_LO16_GOTOFF),
1736 MAP ("got@h", BFD_RELOC_HI16_GOTOFF),
1737 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF),
1738 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF),
1739 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF),
1740 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF),
1741 MAP ("copy", BFD_RELOC_PPC_COPY),
1742 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT),
1743 MAP ("sectoff", BFD_RELOC_16_BASEREL),
1744 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL),
1745 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL),
1746 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL),
1747 MAP ("tls", BFD_RELOC_PPC_TLS),
1748 MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD),
1749 MAP ("dtprel", BFD_RELOC_PPC_DTPREL),
1750 MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO),
1751 MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI),
1752 MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA),
1753 MAP ("tprel", BFD_RELOC_PPC_TPREL),
1754 MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO),
1755 MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI),
1756 MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA),
1757 MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16),
1758 MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO),
1759 MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI),
1760 MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA),
1761 MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16),
1762 MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO),
1763 MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI),
1764 MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA),
1765 MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16),
1766 MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO),
1767 MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI),
1768 MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA),
1769 MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16),
1770 MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO),
1771 MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI),
1772 MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA),
1773 MAP32 ("fixup", BFD_RELOC_CTOR),
1774 MAP32 ("plt", BFD_RELOC_24_PLT_PCREL),
1775 MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL),
1776 MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC),
1777 MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC),
1778 MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL),
1779 MAP32 ("sdarel", BFD_RELOC_GPREL16),
1780 MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32),
1781 MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16),
1782 MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO),
1783 MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI),
1784 MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA),
1785 MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16),
1786 MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL),
1787 MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16),
1788 MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21),
1789 MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF),
1790 MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16),
1791 MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO),
1792 MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI),
1793 MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA),
1794 MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD),
1795 MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA),
1796 MAP32 ("xgot", BFD_RELOC_PPC_TOC16),
1797 MAP64 ("higher", BFD_RELOC_PPC64_HIGHER),
1798 MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S),
1799 MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST),
1800 MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S),
1801 MAP64 ("tocbase", BFD_RELOC_PPC64_TOC),
1802 MAP64 ("toc", BFD_RELOC_PPC_TOC16),
1803 MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO),
1804 MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI),
1805 MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA),
1806 MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER),
1807 MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA),
1808 MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST),
1809 MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA),
1810 MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER),
1811 MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA),
1812 MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST),
1813 MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA),
1814 { (char *) 0, 0, 0, 0, BFD_RELOC_UNUSED }
1815 };
1816
1817 if (*str++ != '@')
1818 return BFD_RELOC_UNUSED;
1819
1820 for (ch = *str, str2 = ident;
1821 (str2 < ident + sizeof (ident) - 1
1822 && (ISALNUM (ch) || ch == '@'));
1823 ch = *++str)
1824 {
1825 *str2++ = TOLOWER (ch);
1826 }
1827
1828 *str2 = '\0';
1829 len = str2 - ident;
1830
1831 ch = ident[0];
1832 for (ptr = &mapping[0]; ptr->length > 0; ptr++)
1833 if (ch == ptr->string[0]
1834 && len == ptr->length
1835 && memcmp (ident, ptr->string, ptr->length) == 0
1836 && (ppc_obj64 ? ptr->valid64 : ptr->valid32))
1837 {
1838 int reloc = ptr->reloc;
1839
1840 if (!ppc_obj64 && exp_p->X_add_number != 0)
1841 {
1842 switch (reloc)
1843 {
1844 case BFD_RELOC_16_GOTOFF:
1845 case BFD_RELOC_LO16_GOTOFF:
1846 case BFD_RELOC_HI16_GOTOFF:
1847 case BFD_RELOC_HI16_S_GOTOFF:
1848 as_warn (_("identifier+constant@got means "
1849 "identifier@got+constant"));
1850 break;
1851
1852 case BFD_RELOC_PPC_GOT_TLSGD16:
1853 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
1854 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
1855 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
1856 case BFD_RELOC_PPC_GOT_TLSLD16:
1857 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
1858 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
1859 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
1860 case BFD_RELOC_PPC_GOT_DTPREL16:
1861 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
1862 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
1863 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
1864 case BFD_RELOC_PPC_GOT_TPREL16:
1865 case BFD_RELOC_PPC_GOT_TPREL16_LO:
1866 case BFD_RELOC_PPC_GOT_TPREL16_HI:
1867 case BFD_RELOC_PPC_GOT_TPREL16_HA:
1868 as_bad (_("symbol+offset not supported for got tls"));
1869 break;
1870 }
1871 }
1872
1873 /* Now check for identifier@suffix+constant. */
1874 if (*str == '-' || *str == '+')
1875 {
1876 char *orig_line = input_line_pointer;
1877 expressionS new_exp;
1878
1879 input_line_pointer = str;
1880 expression (&new_exp);
1881 if (new_exp.X_op == O_constant)
1882 {
1883 exp_p->X_add_number += new_exp.X_add_number;
1884 str = input_line_pointer;
1885 }
1886
1887 if (&input_line_pointer != str_p)
1888 input_line_pointer = orig_line;
1889 }
1890 *str_p = str;
1891
1892 if (reloc == (int) BFD_RELOC_PPC64_TOC
1893 && exp_p->X_op == O_symbol
1894 && strcmp (S_GET_NAME (exp_p->X_add_symbol), ".TOC.") == 0)
1895 {
1896 /* Change the symbol so that the dummy .TOC. symbol can be
1897 omitted from the object file. */
1898 exp_p->X_add_symbol = &abs_symbol;
1899 }
1900
1901 return (bfd_reloc_code_real_type) reloc;
1902 }
1903
1904 return BFD_RELOC_UNUSED;
1905 }
1906
1907 /* Like normal .long/.short/.word, except support @got, etc.
1908 Clobbers input_line_pointer, checks end-of-line. */
1909 static void
1910 ppc_elf_cons (int nbytes /* 1=.byte, 2=.word, 4=.long, 8=.llong */)
1911 {
1912 expressionS exp;
1913 bfd_reloc_code_real_type reloc;
1914
1915 if (is_it_end_of_statement ())
1916 {
1917 demand_empty_rest_of_line ();
1918 return;
1919 }
1920
1921 do
1922 {
1923 expression (&exp);
1924 if (exp.X_op == O_symbol
1925 && *input_line_pointer == '@'
1926 && (reloc = ppc_elf_suffix (&input_line_pointer,
1927 &exp)) != BFD_RELOC_UNUSED)
1928 {
1929 reloc_howto_type *reloc_howto;
1930 int size;
1931
1932 reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
1933 size = bfd_get_reloc_size (reloc_howto);
1934
1935 if (size > nbytes)
1936 {
1937 as_bad (_("%s relocations do not fit in %d bytes\n"),
1938 reloc_howto->name, nbytes);
1939 }
1940 else
1941 {
1942 char *p;
1943 int offset;
1944
1945 p = frag_more (nbytes);
1946 offset = 0;
1947 if (target_big_endian)
1948 offset = nbytes - size;
1949 fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size,
1950 &exp, 0, reloc);
1951 }
1952 }
1953 else
1954 emit_expr (&exp, (unsigned int) nbytes);
1955 }
1956 while (*input_line_pointer++ == ',');
1957
1958 /* Put terminator back into stream. */
1959 input_line_pointer--;
1960 demand_empty_rest_of_line ();
1961 }
1962
1963 /* Solaris pseduo op to change to the .rodata section. */
1964 static void
1965 ppc_elf_rdata (int xxx)
1966 {
1967 char *save_line = input_line_pointer;
1968 static char section[] = ".rodata\n";
1969
1970 /* Just pretend this is .section .rodata */
1971 input_line_pointer = section;
1972 obj_elf_section (xxx);
1973
1974 input_line_pointer = save_line;
1975 }
1976
1977 /* Pseudo op to make file scope bss items. */
1978 static void
1979 ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED)
1980 {
1981 char *name;
1982 char c;
1983 char *p;
1984 offsetT size;
1985 symbolS *symbolP;
1986 offsetT align;
1987 segT old_sec;
1988 int old_subsec;
1989 char *pfrag;
1990 int align2;
1991
1992 name = input_line_pointer;
1993 c = get_symbol_end ();
1994
1995 /* just after name is now '\0'. */
1996 p = input_line_pointer;
1997 *p = c;
1998 SKIP_WHITESPACE ();
1999 if (*input_line_pointer != ',')
2000 {
2001 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
2002 ignore_rest_of_line ();
2003 return;
2004 }
2005
2006 input_line_pointer++; /* skip ',' */
2007 if ((size = get_absolute_expression ()) < 0)
2008 {
2009 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
2010 ignore_rest_of_line ();
2011 return;
2012 }
2013
2014 /* The third argument to .lcomm is the alignment. */
2015 if (*input_line_pointer != ',')
2016 align = 8;
2017 else
2018 {
2019 ++input_line_pointer;
2020 align = get_absolute_expression ();
2021 if (align <= 0)
2022 {
2023 as_warn (_("ignoring bad alignment"));
2024 align = 8;
2025 }
2026 }
2027
2028 *p = 0;
2029 symbolP = symbol_find_or_make (name);
2030 *p = c;
2031
2032 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
2033 {
2034 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
2035 S_GET_NAME (symbolP));
2036 ignore_rest_of_line ();
2037 return;
2038 }
2039
2040 if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
2041 {
2042 as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
2043 S_GET_NAME (symbolP),
2044 (long) S_GET_VALUE (symbolP),
2045 (long) size);
2046
2047 ignore_rest_of_line ();
2048 return;
2049 }
2050
2051 /* Allocate_bss. */
2052 old_sec = now_seg;
2053 old_subsec = now_subseg;
2054 if (align)
2055 {
2056 /* Convert to a power of 2 alignment. */
2057 for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
2058 if (align != 1)
2059 {
2060 as_bad (_("Common alignment not a power of 2"));
2061 ignore_rest_of_line ();
2062 return;
2063 }
2064 }
2065 else
2066 align2 = 0;
2067
2068 record_alignment (bss_section, align2);
2069 subseg_set (bss_section, 0);
2070 if (align2)
2071 frag_align (align2, 0, 0);
2072 if (S_GET_SEGMENT (symbolP) == bss_section)
2073 symbol_get_frag (symbolP)->fr_symbol = 0;
2074 symbol_set_frag (symbolP, frag_now);
2075 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
2076 (char *) 0);
2077 *pfrag = 0;
2078 S_SET_SIZE (symbolP, size);
2079 S_SET_SEGMENT (symbolP, bss_section);
2080 subseg_set (old_sec, old_subsec);
2081 demand_empty_rest_of_line ();
2082 }
2083
2084 /* Validate any relocations emitted for -mrelocatable, possibly adding
2085 fixups for word relocations in writable segments, so we can adjust
2086 them at runtime. */
2087 static void
2088 ppc_elf_validate_fix (fixS *fixp, segT seg)
2089 {
2090 if (fixp->fx_done || fixp->fx_pcrel)
2091 return;
2092
2093 switch (shlib)
2094 {
2095 case SHLIB_NONE:
2096 case SHLIB_PIC:
2097 return;
2098
2099 case SHLIB_MRELOCATABLE:
2100 if (fixp->fx_r_type <= BFD_RELOC_UNUSED
2101 && fixp->fx_r_type != BFD_RELOC_16_GOTOFF
2102 && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
2103 && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
2104 && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
2105 && fixp->fx_r_type != BFD_RELOC_16_BASEREL
2106 && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
2107 && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
2108 && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
2109 && (seg->flags & SEC_LOAD) != 0
2110 && strcmp (segment_name (seg), ".got2") != 0
2111 && strcmp (segment_name (seg), ".dtors") != 0
2112 && strcmp (segment_name (seg), ".ctors") != 0
2113 && strcmp (segment_name (seg), ".fixup") != 0
2114 && strcmp (segment_name (seg), ".gcc_except_table") != 0
2115 && strcmp (segment_name (seg), ".eh_frame") != 0
2116 && strcmp (segment_name (seg), ".ex_shared") != 0)
2117 {
2118 if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
2119 || fixp->fx_r_type != BFD_RELOC_CTOR)
2120 {
2121 as_bad_where (fixp->fx_file, fixp->fx_line,
2122 _("Relocation cannot be done when using -mrelocatable"));
2123 }
2124 }
2125 return;
2126 }
2127 }
2128
2129 /* Prevent elf_frob_file_before_adjust removing a weak undefined
2130 function descriptor sym if the corresponding code sym is used. */
2131
2132 void
2133 ppc_frob_file_before_adjust (void)
2134 {
2135 symbolS *symp;
2136 asection *toc;
2137
2138 if (!ppc_obj64)
2139 return;
2140
2141 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
2142 {
2143 const char *name;
2144 char *dotname;
2145 symbolS *dotsym;
2146 size_t len;
2147
2148 name = S_GET_NAME (symp);
2149 if (name[0] == '.')
2150 continue;
2151
2152 if (! S_IS_WEAK (symp)
2153 || S_IS_DEFINED (symp))
2154 continue;
2155
2156 len = strlen (name) + 1;
2157 dotname = xmalloc (len + 1);
2158 dotname[0] = '.';
2159 memcpy (dotname + 1, name, len);
2160 dotsym = symbol_find_noref (dotname, 1);
2161 free (dotname);
2162 if (dotsym != NULL && (symbol_used_p (dotsym)
2163 || symbol_used_in_reloc_p (dotsym)))
2164 symbol_mark_used (symp);
2165
2166 }
2167
2168 toc = bfd_get_section_by_name (stdoutput, ".toc");
2169 if (toc != NULL
2170 && bfd_section_size (stdoutput, toc) > 0x10000)
2171 as_warn (_("TOC section size exceeds 64k"));
2172
2173 /* Don't emit .TOC. symbol. */
2174 symp = symbol_find (".TOC.");
2175 if (symp != NULL)
2176 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
2177 }
2178 #endif /* OBJ_ELF */
2179 \f
2180 #ifdef TE_PE
2181
2182 /*
2183 * Summary of parse_toc_entry.
2184 *
2185 * in: Input_line_pointer points to the '[' in one of:
2186 *
2187 * [toc] [tocv] [toc32] [toc64]
2188 *
2189 * Anything else is an error of one kind or another.
2190 *
2191 * out:
2192 * return value: success or failure
2193 * toc_kind: kind of toc reference
2194 * input_line_pointer:
2195 * success: first char after the ']'
2196 * failure: unchanged
2197 *
2198 * settings:
2199 *
2200 * [toc] - rv == success, toc_kind = default_toc
2201 * [tocv] - rv == success, toc_kind = data_in_toc
2202 * [toc32] - rv == success, toc_kind = must_be_32
2203 * [toc64] - rv == success, toc_kind = must_be_64
2204 *
2205 */
2206
2207 enum toc_size_qualifier
2208 {
2209 default_toc, /* The toc cell constructed should be the system default size */
2210 data_in_toc, /* This is a direct reference to a toc cell */
2211 must_be_32, /* The toc cell constructed must be 32 bits wide */
2212 must_be_64 /* The toc cell constructed must be 64 bits wide */
2213 };
2214
2215 static int
2216 parse_toc_entry (enum toc_size_qualifier *toc_kind)
2217 {
2218 char *start;
2219 char *toc_spec;
2220 char c;
2221 enum toc_size_qualifier t;
2222
2223 /* Save the input_line_pointer. */
2224 start = input_line_pointer;
2225
2226 /* Skip over the '[' , and whitespace. */
2227 ++input_line_pointer;
2228 SKIP_WHITESPACE ();
2229
2230 /* Find the spelling of the operand. */
2231 toc_spec = input_line_pointer;
2232 c = get_symbol_end ();
2233
2234 if (strcmp (toc_spec, "toc") == 0)
2235 {
2236 t = default_toc;
2237 }
2238 else if (strcmp (toc_spec, "tocv") == 0)
2239 {
2240 t = data_in_toc;
2241 }
2242 else if (strcmp (toc_spec, "toc32") == 0)
2243 {
2244 t = must_be_32;
2245 }
2246 else if (strcmp (toc_spec, "toc64") == 0)
2247 {
2248 t = must_be_64;
2249 }
2250 else
2251 {
2252 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec);
2253 *input_line_pointer = c;
2254 input_line_pointer = start;
2255 return 0;
2256 }
2257
2258 /* Now find the ']'. */
2259 *input_line_pointer = c;
2260
2261 SKIP_WHITESPACE (); /* leading whitespace could be there. */
2262 c = *input_line_pointer++; /* input_line_pointer->past char in c. */
2263
2264 if (c != ']')
2265 {
2266 as_bad (_("syntax error: expected `]', found `%c'"), c);
2267 input_line_pointer = start;
2268 return 0;
2269 }
2270
2271 *toc_kind = t;
2272 return 1;
2273 }
2274 #endif
2275 \f
2276
2277 #ifdef OBJ_ELF
2278 #define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff))
2279 static void
2280 ppc_apuinfo_section_add (unsigned int apu, unsigned int version)
2281 {
2282 unsigned int i;
2283
2284 /* Check we don't already exist. */
2285 for (i = 0; i < ppc_apuinfo_num; i++)
2286 if (ppc_apuinfo_list[i] == APUID (apu, version))
2287 return;
2288
2289 if (ppc_apuinfo_num == ppc_apuinfo_num_alloc)
2290 {
2291 if (ppc_apuinfo_num_alloc == 0)
2292 {
2293 ppc_apuinfo_num_alloc = 4;
2294 ppc_apuinfo_list = (unsigned long *)
2295 xmalloc (sizeof (unsigned long) * ppc_apuinfo_num_alloc);
2296 }
2297 else
2298 {
2299 ppc_apuinfo_num_alloc += 4;
2300 ppc_apuinfo_list = (unsigned long *) xrealloc (ppc_apuinfo_list,
2301 sizeof (unsigned long) * ppc_apuinfo_num_alloc);
2302 }
2303 }
2304 ppc_apuinfo_list[ppc_apuinfo_num++] = APUID (apu, version);
2305 }
2306 #undef APUID
2307 #endif
2308 \f
2309
2310 /* We need to keep a list of fixups. We can't simply generate them as
2311 we go, because that would require us to first create the frag, and
2312 that would screw up references to ``.''. */
2313
2314 struct ppc_fixup
2315 {
2316 expressionS exp;
2317 int opindex;
2318 bfd_reloc_code_real_type reloc;
2319 };
2320
2321 #define MAX_INSN_FIXUPS (5)
2322
2323 /* This routine is called for each instruction to be assembled. */
2324
2325 void
2326 md_assemble (char *str)
2327 {
2328 char *s;
2329 const struct powerpc_opcode *opcode;
2330 unsigned long insn;
2331 const unsigned char *opindex_ptr;
2332 int skip_optional;
2333 int need_paren;
2334 int next_opindex;
2335 struct ppc_fixup fixups[MAX_INSN_FIXUPS];
2336 int fc;
2337 char *f;
2338 int addr_mod;
2339 int i;
2340 #ifdef OBJ_ELF
2341 bfd_reloc_code_real_type reloc;
2342 #endif
2343
2344 /* Get the opcode. */
2345 for (s = str; *s != '\0' && ! ISSPACE (*s); s++)
2346 ;
2347 if (*s != '\0')
2348 *s++ = '\0';
2349
2350 /* Look up the opcode in the hash table. */
2351 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str);
2352 if (opcode == (const struct powerpc_opcode *) NULL)
2353 {
2354 const struct powerpc_macro *macro;
2355
2356 macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str);
2357 if (macro == (const struct powerpc_macro *) NULL)
2358 as_bad (_("Unrecognized opcode: `%s'"), str);
2359 else
2360 ppc_macro (s, macro);
2361
2362 return;
2363 }
2364
2365 insn = opcode->opcode;
2366
2367 str = s;
2368 while (ISSPACE (*str))
2369 ++str;
2370
2371 /* PowerPC operands are just expressions. The only real issue is
2372 that a few operand types are optional. All cases which might use
2373 an optional operand separate the operands only with commas (in some
2374 cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never
2375 have optional operands). Most instructions with optional operands
2376 have only one. Those that have more than one optional operand can
2377 take either all their operands or none. So, before we start seriously
2378 parsing the operands, we check to see if we have optional operands,
2379 and if we do, we count the number of commas to see which operands
2380 have been omitted. */
2381 skip_optional = 0;
2382 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
2383 {
2384 const struct powerpc_operand *operand;
2385
2386 operand = &powerpc_operands[*opindex_ptr];
2387 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
2388 {
2389 unsigned int opcount;
2390 unsigned int num_operands_expected;
2391
2392 /* There is an optional operand. Count the number of
2393 commas in the input line. */
2394 if (*str == '\0')
2395 opcount = 0;
2396 else
2397 {
2398 opcount = 1;
2399 s = str;
2400 while ((s = strchr (s, ',')) != (char *) NULL)
2401 {
2402 ++opcount;
2403 ++s;
2404 }
2405 }
2406
2407 /* Compute the number of expected operands.
2408 Do not count fake operands. */
2409 for (num_operands_expected = 0, i = 0; opcode->operands[i]; i ++)
2410 if ((powerpc_operands [opcode->operands[i]].flags & PPC_OPERAND_FAKE) == 0)
2411 ++ num_operands_expected;
2412
2413 /* If there are fewer operands in the line then are called
2414 for by the instruction, we want to skip the optional
2415 operands. */
2416 if (opcount < num_operands_expected)
2417 skip_optional = 1;
2418
2419 break;
2420 }
2421 }
2422
2423 /* Gather the operands. */
2424 need_paren = 0;
2425 next_opindex = 0;
2426 fc = 0;
2427 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
2428 {
2429 const struct powerpc_operand *operand;
2430 const char *errmsg;
2431 char *hold;
2432 expressionS ex;
2433 char endc;
2434
2435 if (next_opindex == 0)
2436 operand = &powerpc_operands[*opindex_ptr];
2437 else
2438 {
2439 operand = &powerpc_operands[next_opindex];
2440 next_opindex = 0;
2441 }
2442 errmsg = NULL;
2443
2444 /* If this is a fake operand, then we do not expect anything
2445 from the input. */
2446 if ((operand->flags & PPC_OPERAND_FAKE) != 0)
2447 {
2448 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg);
2449 if (errmsg != (const char *) NULL)
2450 as_bad ("%s", errmsg);
2451 continue;
2452 }
2453
2454 /* If this is an optional operand, and we are skipping it, just
2455 insert a zero. */
2456 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
2457 && skip_optional)
2458 {
2459 if (operand->insert)
2460 {
2461 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg);
2462 if (errmsg != (const char *) NULL)
2463 as_bad ("%s", errmsg);
2464 }
2465 if ((operand->flags & PPC_OPERAND_NEXT) != 0)
2466 next_opindex = *opindex_ptr + 1;
2467 continue;
2468 }
2469
2470 /* Gather the operand. */
2471 hold = input_line_pointer;
2472 input_line_pointer = str;
2473
2474 #ifdef TE_PE
2475 if (*input_line_pointer == '[')
2476 {
2477 /* We are expecting something like the second argument here:
2478 *
2479 * lwz r4,[toc].GS.0.static_int(rtoc)
2480 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2481 * The argument following the `]' must be a symbol name, and the
2482 * register must be the toc register: 'rtoc' or '2'
2483 *
2484 * The effect is to 0 as the displacement field
2485 * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
2486 * the appropriate variation) reloc against it based on the symbol.
2487 * The linker will build the toc, and insert the resolved toc offset.
2488 *
2489 * Note:
2490 * o The size of the toc entry is currently assumed to be
2491 * 32 bits. This should not be assumed to be a hard coded
2492 * number.
2493 * o In an effort to cope with a change from 32 to 64 bits,
2494 * there are also toc entries that are specified to be
2495 * either 32 or 64 bits:
2496 * lwz r4,[toc32].GS.0.static_int(rtoc)
2497 * lwz r4,[toc64].GS.0.static_int(rtoc)
2498 * These demand toc entries of the specified size, and the
2499 * instruction probably requires it.
2500 */
2501
2502 int valid_toc;
2503 enum toc_size_qualifier toc_kind;
2504 bfd_reloc_code_real_type toc_reloc;
2505
2506 /* Go parse off the [tocXX] part. */
2507 valid_toc = parse_toc_entry (&toc_kind);
2508
2509 if (!valid_toc)
2510 {
2511 /* Note: message has already been issued.
2512 FIXME: what sort of recovery should we do?
2513 demand_rest_of_line (); return; ? */
2514 }
2515
2516 /* Now get the symbol following the ']'. */
2517 expression (&ex);
2518
2519 switch (toc_kind)
2520 {
2521 case default_toc:
2522 /* In this case, we may not have seen the symbol yet,
2523 since it is allowed to appear on a .extern or .globl
2524 or just be a label in the .data section. */
2525 toc_reloc = BFD_RELOC_PPC_TOC16;
2526 break;
2527 case data_in_toc:
2528 /* 1. The symbol must be defined and either in the toc
2529 section, or a global.
2530 2. The reloc generated must have the TOCDEFN flag set
2531 in upper bit mess of the reloc type.
2532 FIXME: It's a little confusing what the tocv
2533 qualifier can be used for. At the very least, I've
2534 seen three uses, only one of which I'm sure I can
2535 explain. */
2536 if (ex.X_op == O_symbol)
2537 {
2538 gas_assert (ex.X_add_symbol != NULL);
2539 if (symbol_get_bfdsym (ex.X_add_symbol)->section
2540 != tocdata_section)
2541 {
2542 as_bad (_("[tocv] symbol is not a toc symbol"));
2543 }
2544 }
2545
2546 toc_reloc = BFD_RELOC_PPC_TOC16;
2547 break;
2548 case must_be_32:
2549 /* FIXME: these next two specifically specify 32/64 bit
2550 toc entries. We don't support them today. Is this
2551 the right way to say that? */
2552 toc_reloc = BFD_RELOC_UNUSED;
2553 as_bad (_("Unimplemented toc32 expression modifier"));
2554 break;
2555 case must_be_64:
2556 /* FIXME: see above. */
2557 toc_reloc = BFD_RELOC_UNUSED;
2558 as_bad (_("Unimplemented toc64 expression modifier"));
2559 break;
2560 default:
2561 fprintf (stderr,
2562 _("Unexpected return value [%d] from parse_toc_entry!\n"),
2563 toc_kind);
2564 abort ();
2565 break;
2566 }
2567
2568 /* We need to generate a fixup for this expression. */
2569 if (fc >= MAX_INSN_FIXUPS)
2570 as_fatal (_("too many fixups"));
2571
2572 fixups[fc].reloc = toc_reloc;
2573 fixups[fc].exp = ex;
2574 fixups[fc].opindex = *opindex_ptr;
2575 ++fc;
2576
2577 /* Ok. We've set up the fixup for the instruction. Now make it
2578 look like the constant 0 was found here. */
2579 ex.X_unsigned = 1;
2580 ex.X_op = O_constant;
2581 ex.X_add_number = 0;
2582 ex.X_add_symbol = NULL;
2583 ex.X_op_symbol = NULL;
2584 }
2585
2586 else
2587 #endif /* TE_PE */
2588 {
2589 if ((reg_names_p && (operand->flags & PPC_OPERAND_CR) != 0)
2590 || !register_name (&ex))
2591 {
2592 char save_lex = lex_type['%'];
2593
2594 if ((operand->flags & PPC_OPERAND_CR) != 0)
2595 {
2596 cr_operand = TRUE;
2597 lex_type['%'] |= LEX_BEGIN_NAME;
2598 }
2599 expression (&ex);
2600 cr_operand = FALSE;
2601 lex_type['%'] = save_lex;
2602 }
2603 }
2604
2605 str = input_line_pointer;
2606 input_line_pointer = hold;
2607
2608 if (ex.X_op == O_illegal)
2609 as_bad (_("illegal operand"));
2610 else if (ex.X_op == O_absent)
2611 as_bad (_("missing operand"));
2612 else if (ex.X_op == O_register)
2613 {
2614 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2615 ppc_cpu, (char *) NULL, 0);
2616 }
2617 else if (ex.X_op == O_constant)
2618 {
2619 #ifdef OBJ_ELF
2620 /* Allow @HA, @L, @H on constants. */
2621 char *orig_str = str;
2622
2623 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2624 switch (reloc)
2625 {
2626 default:
2627 str = orig_str;
2628 break;
2629
2630 case BFD_RELOC_LO16:
2631 /* X_unsigned is the default, so if the user has done
2632 something which cleared it, we always produce a
2633 signed value. */
2634 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2635 ex.X_add_number &= 0xffff;
2636 else
2637 ex.X_add_number = SEX16 (ex.X_add_number);
2638 break;
2639
2640 case BFD_RELOC_HI16:
2641 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2642 ex.X_add_number = PPC_HI (ex.X_add_number);
2643 else
2644 ex.X_add_number = SEX16 (PPC_HI (ex.X_add_number));
2645 break;
2646
2647 case BFD_RELOC_HI16_S:
2648 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2649 ex.X_add_number = PPC_HA (ex.X_add_number);
2650 else
2651 ex.X_add_number = SEX16 (PPC_HA (ex.X_add_number));
2652 break;
2653
2654 case BFD_RELOC_PPC64_HIGHER:
2655 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2656 ex.X_add_number = PPC_HIGHER (ex.X_add_number);
2657 else
2658 ex.X_add_number = SEX16 (PPC_HIGHER (ex.X_add_number));
2659 break;
2660
2661 case BFD_RELOC_PPC64_HIGHER_S:
2662 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2663 ex.X_add_number = PPC_HIGHERA (ex.X_add_number);
2664 else
2665 ex.X_add_number = SEX16 (PPC_HIGHERA (ex.X_add_number));
2666 break;
2667
2668 case BFD_RELOC_PPC64_HIGHEST:
2669 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2670 ex.X_add_number = PPC_HIGHEST (ex.X_add_number);
2671 else
2672 ex.X_add_number = SEX16 (PPC_HIGHEST (ex.X_add_number));
2673 break;
2674
2675 case BFD_RELOC_PPC64_HIGHEST_S:
2676 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2677 ex.X_add_number = PPC_HIGHESTA (ex.X_add_number);
2678 else
2679 ex.X_add_number = SEX16 (PPC_HIGHESTA (ex.X_add_number));
2680 break;
2681 }
2682 #endif /* OBJ_ELF */
2683 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2684 ppc_cpu, (char *) NULL, 0);
2685 }
2686 #ifdef OBJ_ELF
2687 else
2688 {
2689 if (ex.X_op == O_symbol && str[0] == '(')
2690 {
2691 const char *sym_name = S_GET_NAME (ex.X_add_symbol);
2692 if (sym_name[0] == '.')
2693 ++sym_name;
2694
2695 if (strcasecmp (sym_name, "__tls_get_addr") == 0)
2696 {
2697 expressionS tls_exp;
2698
2699 hold = input_line_pointer;
2700 input_line_pointer = str + 1;
2701 expression (&tls_exp);
2702 if (tls_exp.X_op == O_symbol)
2703 {
2704 reloc = BFD_RELOC_UNUSED;
2705 if (strncasecmp (input_line_pointer, "@tlsgd)", 7) == 0)
2706 {
2707 reloc = BFD_RELOC_PPC_TLSGD;
2708 input_line_pointer += 7;
2709 }
2710 else if (strncasecmp (input_line_pointer, "@tlsld)", 7) == 0)
2711 {
2712 reloc = BFD_RELOC_PPC_TLSLD;
2713 input_line_pointer += 7;
2714 }
2715 if (reloc != BFD_RELOC_UNUSED)
2716 {
2717 SKIP_WHITESPACE ();
2718 str = input_line_pointer;
2719
2720 if (fc >= MAX_INSN_FIXUPS)
2721 as_fatal (_("too many fixups"));
2722 fixups[fc].exp = tls_exp;
2723 fixups[fc].opindex = *opindex_ptr;
2724 fixups[fc].reloc = reloc;
2725 ++fc;
2726 }
2727 }
2728 input_line_pointer = hold;
2729 }
2730 }
2731
2732 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2733 {
2734 /* Some TLS tweaks. */
2735 switch (reloc)
2736 {
2737 default:
2738 break;
2739
2740 case BFD_RELOC_PPC_TLS:
2741 if (!_bfd_elf_ppc_at_tls_transform (opcode->opcode, 0))
2742 as_bad (_("@tls may not be used with \"%s\" operands"),
2743 opcode->name);
2744 else if (operand->shift != 11)
2745 as_bad (_("@tls may only be used in last operand"));
2746 else
2747 insn = ppc_insert_operand (insn, operand,
2748 ppc_obj64 ? 13 : 2,
2749 ppc_cpu, (char *) NULL, 0);
2750 break;
2751
2752 /* We'll only use the 32 (or 64) bit form of these relocations
2753 in constants. Instructions get the 16 bit form. */
2754 case BFD_RELOC_PPC_DTPREL:
2755 reloc = BFD_RELOC_PPC_DTPREL16;
2756 break;
2757 case BFD_RELOC_PPC_TPREL:
2758 reloc = BFD_RELOC_PPC_TPREL16;
2759 break;
2760 }
2761
2762 /* For the absolute forms of branches, convert the PC
2763 relative form back into the absolute. */
2764 if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
2765 {
2766 switch (reloc)
2767 {
2768 case BFD_RELOC_PPC_B26:
2769 reloc = BFD_RELOC_PPC_BA26;
2770 break;
2771 case BFD_RELOC_PPC_B16:
2772 reloc = BFD_RELOC_PPC_BA16;
2773 break;
2774 case BFD_RELOC_PPC_B16_BRTAKEN:
2775 reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
2776 break;
2777 case BFD_RELOC_PPC_B16_BRNTAKEN:
2778 reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
2779 break;
2780 default:
2781 break;
2782 }
2783 }
2784
2785 if (ppc_obj64
2786 && (operand->flags & (PPC_OPERAND_DS | PPC_OPERAND_DQ)) != 0)
2787 {
2788 switch (reloc)
2789 {
2790 case BFD_RELOC_16:
2791 reloc = BFD_RELOC_PPC64_ADDR16_DS;
2792 break;
2793 case BFD_RELOC_LO16:
2794 reloc = BFD_RELOC_PPC64_ADDR16_LO_DS;
2795 break;
2796 case BFD_RELOC_16_GOTOFF:
2797 reloc = BFD_RELOC_PPC64_GOT16_DS;
2798 break;
2799 case BFD_RELOC_LO16_GOTOFF:
2800 reloc = BFD_RELOC_PPC64_GOT16_LO_DS;
2801 break;
2802 case BFD_RELOC_LO16_PLTOFF:
2803 reloc = BFD_RELOC_PPC64_PLT16_LO_DS;
2804 break;
2805 case BFD_RELOC_16_BASEREL:
2806 reloc = BFD_RELOC_PPC64_SECTOFF_DS;
2807 break;
2808 case BFD_RELOC_LO16_BASEREL:
2809 reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS;
2810 break;
2811 case BFD_RELOC_PPC_TOC16:
2812 reloc = BFD_RELOC_PPC64_TOC16_DS;
2813 break;
2814 case BFD_RELOC_PPC64_TOC16_LO:
2815 reloc = BFD_RELOC_PPC64_TOC16_LO_DS;
2816 break;
2817 case BFD_RELOC_PPC64_PLTGOT16:
2818 reloc = BFD_RELOC_PPC64_PLTGOT16_DS;
2819 break;
2820 case BFD_RELOC_PPC64_PLTGOT16_LO:
2821 reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS;
2822 break;
2823 case BFD_RELOC_PPC_DTPREL16:
2824 reloc = BFD_RELOC_PPC64_DTPREL16_DS;
2825 break;
2826 case BFD_RELOC_PPC_DTPREL16_LO:
2827 reloc = BFD_RELOC_PPC64_DTPREL16_LO_DS;
2828 break;
2829 case BFD_RELOC_PPC_TPREL16:
2830 reloc = BFD_RELOC_PPC64_TPREL16_DS;
2831 break;
2832 case BFD_RELOC_PPC_TPREL16_LO:
2833 reloc = BFD_RELOC_PPC64_TPREL16_LO_DS;
2834 break;
2835 case BFD_RELOC_PPC_GOT_DTPREL16:
2836 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
2837 case BFD_RELOC_PPC_GOT_TPREL16:
2838 case BFD_RELOC_PPC_GOT_TPREL16_LO:
2839 break;
2840 default:
2841 as_bad (_("unsupported relocation for DS offset field"));
2842 break;
2843 }
2844 }
2845 }
2846
2847 /* We need to generate a fixup for this expression. */
2848 if (fc >= MAX_INSN_FIXUPS)
2849 as_fatal (_("too many fixups"));
2850 fixups[fc].exp = ex;
2851 fixups[fc].opindex = *opindex_ptr;
2852 fixups[fc].reloc = reloc;
2853 ++fc;
2854 }
2855 #else /* OBJ_ELF */
2856 else
2857 {
2858 /* We need to generate a fixup for this expression. */
2859 if (fc >= MAX_INSN_FIXUPS)
2860 as_fatal (_("too many fixups"));
2861 fixups[fc].exp = ex;
2862 fixups[fc].opindex = *opindex_ptr;
2863 fixups[fc].reloc = BFD_RELOC_UNUSED;
2864 ++fc;
2865 }
2866 #endif /* OBJ_ELF */
2867
2868 if (need_paren)
2869 {
2870 endc = ')';
2871 need_paren = 0;
2872 /* If expecting more operands, then we want to see "),". */
2873 if (*str == endc && opindex_ptr[1] != 0)
2874 {
2875 do
2876 ++str;
2877 while (ISSPACE (*str));
2878 endc = ',';
2879 }
2880 }
2881 else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
2882 {
2883 endc = '(';
2884 need_paren = 1;
2885 }
2886 else
2887 endc = ',';
2888
2889 /* The call to expression should have advanced str past any
2890 whitespace. */
2891 if (*str != endc
2892 && (endc != ',' || *str != '\0'))
2893 {
2894 as_bad (_("syntax error; found `%c' but expected `%c'"), *str, endc);
2895 break;
2896 }
2897
2898 if (*str != '\0')
2899 ++str;
2900 }
2901
2902 while (ISSPACE (*str))
2903 ++str;
2904
2905 if (*str != '\0')
2906 as_bad (_("junk at end of line: `%s'"), str);
2907
2908 #ifdef OBJ_ELF
2909 /* Do we need/want a APUinfo section? */
2910 if ((ppc_cpu & PPC_OPCODE_E500MC) != 0)
2911 {
2912 /* These are all version "1". */
2913 if (opcode->flags & PPC_OPCODE_SPE)
2914 ppc_apuinfo_section_add (PPC_APUINFO_SPE, 1);
2915 if (opcode->flags & PPC_OPCODE_ISEL)
2916 ppc_apuinfo_section_add (PPC_APUINFO_ISEL, 1);
2917 if (opcode->flags & PPC_OPCODE_EFS)
2918 ppc_apuinfo_section_add (PPC_APUINFO_EFS, 1);
2919 if (opcode->flags & PPC_OPCODE_BRLOCK)
2920 ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK, 1);
2921 if (opcode->flags & PPC_OPCODE_PMR)
2922 ppc_apuinfo_section_add (PPC_APUINFO_PMR, 1);
2923 if (opcode->flags & PPC_OPCODE_CACHELCK)
2924 ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK, 1);
2925 if (opcode->flags & PPC_OPCODE_RFMCI)
2926 ppc_apuinfo_section_add (PPC_APUINFO_RFMCI, 1);
2927 }
2928 #endif
2929
2930 /* Write out the instruction. */
2931 f = frag_more (4);
2932 addr_mod = frag_now_fix () & 3;
2933 if (frag_now->has_code && frag_now->insn_addr != addr_mod)
2934 as_bad (_("instruction address is not a multiple of 4"));
2935 frag_now->insn_addr = addr_mod;
2936 frag_now->has_code = 1;
2937 md_number_to_chars (f, insn, 4);
2938
2939 #ifdef OBJ_ELF
2940 dwarf2_emit_insn (4);
2941 #endif
2942
2943 /* Create any fixups. At this point we do not use a
2944 bfd_reloc_code_real_type, but instead just use the
2945 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2946 handle fixups for any operand type, although that is admittedly
2947 not a very exciting feature. We pick a BFD reloc type in
2948 md_apply_fix. */
2949 for (i = 0; i < fc; i++)
2950 {
2951 if (fixups[i].reloc != BFD_RELOC_UNUSED)
2952 {
2953 reloc_howto_type *reloc_howto;
2954 int size;
2955 int offset;
2956 fixS *fixP;
2957
2958 reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
2959 if (!reloc_howto)
2960 abort ();
2961
2962 size = bfd_get_reloc_size (reloc_howto);
2963 offset = target_big_endian ? (4 - size) : 0;
2964
2965 if (size < 1 || size > 4)
2966 abort ();
2967
2968 fixP = fix_new_exp (frag_now,
2969 f - frag_now->fr_literal + offset,
2970 size,
2971 &fixups[i].exp,
2972 reloc_howto->pc_relative,
2973 fixups[i].reloc);
2974
2975 /* Turn off complaints that the addend is too large for things like
2976 foo+100000@ha. */
2977 switch (fixups[i].reloc)
2978 {
2979 case BFD_RELOC_16_GOTOFF:
2980 case BFD_RELOC_PPC_TOC16:
2981 case BFD_RELOC_LO16:
2982 case BFD_RELOC_HI16:
2983 case BFD_RELOC_HI16_S:
2984 #ifdef OBJ_ELF
2985 case BFD_RELOC_PPC64_HIGHER:
2986 case BFD_RELOC_PPC64_HIGHER_S:
2987 case BFD_RELOC_PPC64_HIGHEST:
2988 case BFD_RELOC_PPC64_HIGHEST_S:
2989 #endif
2990 fixP->fx_no_overflow = 1;
2991 break;
2992 default:
2993 break;
2994 }
2995 }
2996 else
2997 {
2998 const struct powerpc_operand *operand;
2999
3000 operand = &powerpc_operands[fixups[i].opindex];
3001 fix_new_exp (frag_now,
3002 f - frag_now->fr_literal,
3003 4,
3004 &fixups[i].exp,
3005 (operand->flags & PPC_OPERAND_RELATIVE) != 0,
3006 ((bfd_reloc_code_real_type)
3007 (fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
3008 }
3009 }
3010 }
3011
3012 /* Handle a macro. Gather all the operands, transform them as
3013 described by the macro, and call md_assemble recursively. All the
3014 operands are separated by commas; we don't accept parentheses
3015 around operands here. */
3016
3017 static void
3018 ppc_macro (char *str, const struct powerpc_macro *macro)
3019 {
3020 char *operands[10];
3021 unsigned int count;
3022 char *s;
3023 unsigned int len;
3024 const char *format;
3025 unsigned int arg;
3026 char *send;
3027 char *complete;
3028
3029 /* Gather the users operands into the operands array. */
3030 count = 0;
3031 s = str;
3032 while (1)
3033 {
3034 if (count >= sizeof operands / sizeof operands[0])
3035 break;
3036 operands[count++] = s;
3037 s = strchr (s, ',');
3038 if (s == (char *) NULL)
3039 break;
3040 *s++ = '\0';
3041 }
3042
3043 if (count != macro->operands)
3044 {
3045 as_bad (_("wrong number of operands"));
3046 return;
3047 }
3048
3049 /* Work out how large the string must be (the size is unbounded
3050 because it includes user input). */
3051 len = 0;
3052 format = macro->format;
3053 while (*format != '\0')
3054 {
3055 if (*format != '%')
3056 {
3057 ++len;
3058 ++format;
3059 }
3060 else
3061 {
3062 arg = strtol (format + 1, &send, 10);
3063 know (send != format && arg < count);
3064 len += strlen (operands[arg]);
3065 format = send;
3066 }
3067 }
3068
3069 /* Put the string together. */
3070 complete = s = (char *) alloca (len + 1);
3071 format = macro->format;
3072 while (*format != '\0')
3073 {
3074 if (*format != '%')
3075 *s++ = *format++;
3076 else
3077 {
3078 arg = strtol (format + 1, &send, 10);
3079 strcpy (s, operands[arg]);
3080 s += strlen (s);
3081 format = send;
3082 }
3083 }
3084 *s = '\0';
3085
3086 /* Assemble the constructed instruction. */
3087 md_assemble (complete);
3088 }
3089 \f
3090 #ifdef OBJ_ELF
3091 /* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED. */
3092
3093 bfd_vma
3094 ppc_section_letter (int letter, char **ptr_msg)
3095 {
3096 if (letter == 'e')
3097 return SHF_EXCLUDE;
3098
3099 *ptr_msg = _("Bad .section directive: want a,e,w,x,M,S,G,T in string");
3100 return -1;
3101 }
3102
3103 bfd_vma
3104 ppc_section_word (char *str, size_t len)
3105 {
3106 if (len == 7 && strncmp (str, "exclude", 7) == 0)
3107 return SHF_EXCLUDE;
3108
3109 return -1;
3110 }
3111
3112 int
3113 ppc_section_type (char *str, size_t len)
3114 {
3115 if (len == 7 && strncmp (str, "ordered", 7) == 0)
3116 return SHT_ORDERED;
3117
3118 return -1;
3119 }
3120
3121 int
3122 ppc_section_flags (flagword flags, bfd_vma attr, int type)
3123 {
3124 if (type == SHT_ORDERED)
3125 flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
3126
3127 if (attr & SHF_EXCLUDE)
3128 flags |= SEC_EXCLUDE;
3129
3130 return flags;
3131 }
3132 #endif /* OBJ_ELF */
3133
3134 \f
3135 /* Pseudo-op handling. */
3136
3137 /* The .byte pseudo-op. This is similar to the normal .byte
3138 pseudo-op, but it can also take a single ASCII string. */
3139
3140 static void
3141 ppc_byte (int ignore ATTRIBUTE_UNUSED)
3142 {
3143 if (*input_line_pointer != '\"')
3144 {
3145 cons (1);
3146 return;
3147 }
3148
3149 /* Gather characters. A real double quote is doubled. Unusual
3150 characters are not permitted. */
3151 ++input_line_pointer;
3152 while (1)
3153 {
3154 char c;
3155
3156 c = *input_line_pointer++;
3157
3158 if (c == '\"')
3159 {
3160 if (*input_line_pointer != '\"')
3161 break;
3162 ++input_line_pointer;
3163 }
3164
3165 FRAG_APPEND_1_CHAR (c);
3166 }
3167
3168 demand_empty_rest_of_line ();
3169 }
3170 \f
3171 #ifdef OBJ_XCOFF
3172
3173 /* XCOFF specific pseudo-op handling. */
3174
3175 /* This is set if we are creating a .stabx symbol, since we don't want
3176 to handle symbol suffixes for such symbols. */
3177 static bfd_boolean ppc_stab_symbol;
3178
3179 /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
3180 symbols in the .bss segment as though they were local common
3181 symbols, and uses a different smclas. The native Aix 4.3.3 assembler
3182 aligns .comm and .lcomm to 4 bytes. */
3183
3184 static void
3185 ppc_comm (int lcomm)
3186 {
3187 asection *current_seg = now_seg;
3188 subsegT current_subseg = now_subseg;
3189 char *name;
3190 char endc;
3191 char *end_name;
3192 offsetT size;
3193 offsetT align;
3194 symbolS *lcomm_sym = NULL;
3195 symbolS *sym;
3196 char *pfrag;
3197
3198 name = input_line_pointer;
3199 endc = get_symbol_end ();
3200 end_name = input_line_pointer;
3201 *end_name = endc;
3202
3203 if (*input_line_pointer != ',')
3204 {
3205 as_bad (_("missing size"));
3206 ignore_rest_of_line ();
3207 return;
3208 }
3209 ++input_line_pointer;
3210
3211 size = get_absolute_expression ();
3212 if (size < 0)
3213 {
3214 as_bad (_("negative size"));
3215 ignore_rest_of_line ();
3216 return;
3217 }
3218
3219 if (! lcomm)
3220 {
3221 /* The third argument to .comm is the alignment. */
3222 if (*input_line_pointer != ',')
3223 align = 2;
3224 else
3225 {
3226 ++input_line_pointer;
3227 align = get_absolute_expression ();
3228 if (align <= 0)
3229 {
3230 as_warn (_("ignoring bad alignment"));
3231 align = 2;
3232 }
3233 }
3234 }
3235 else
3236 {
3237 char *lcomm_name;
3238 char lcomm_endc;
3239
3240 if (size <= 4)
3241 align = 2;
3242 else
3243 align = 3;
3244
3245 /* The third argument to .lcomm appears to be the real local
3246 common symbol to create. References to the symbol named in
3247 the first argument are turned into references to the third
3248 argument. */
3249 if (*input_line_pointer != ',')
3250 {
3251 as_bad (_("missing real symbol name"));
3252 ignore_rest_of_line ();
3253 return;
3254 }
3255 ++input_line_pointer;
3256
3257 lcomm_name = input_line_pointer;
3258 lcomm_endc = get_symbol_end ();
3259
3260 lcomm_sym = symbol_find_or_make (lcomm_name);
3261
3262 *input_line_pointer = lcomm_endc;
3263 }
3264
3265 *end_name = '\0';
3266 sym = symbol_find_or_make (name);
3267 *end_name = endc;
3268
3269 if (S_IS_DEFINED (sym)
3270 || S_GET_VALUE (sym) != 0)
3271 {
3272 as_bad (_("attempt to redefine symbol"));
3273 ignore_rest_of_line ();
3274 return;
3275 }
3276
3277 record_alignment (bss_section, align);
3278
3279 if (! lcomm
3280 || ! S_IS_DEFINED (lcomm_sym))
3281 {
3282 symbolS *def_sym;
3283 offsetT def_size;
3284
3285 if (! lcomm)
3286 {
3287 def_sym = sym;
3288 def_size = size;
3289 S_SET_EXTERNAL (sym);
3290 }
3291 else
3292 {
3293 symbol_get_tc (lcomm_sym)->output = 1;
3294 def_sym = lcomm_sym;
3295 def_size = 0;
3296 }
3297
3298 subseg_set (bss_section, 1);
3299 frag_align (align, 0, 0);
3300
3301 symbol_set_frag (def_sym, frag_now);
3302 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
3303 def_size, (char *) NULL);
3304 *pfrag = 0;
3305 S_SET_SEGMENT (def_sym, bss_section);
3306 symbol_get_tc (def_sym)->align = align;
3307 }
3308 else if (lcomm)
3309 {
3310 /* Align the size of lcomm_sym. */
3311 symbol_get_frag (lcomm_sym)->fr_offset =
3312 ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
3313 &~ ((1 << align) - 1));
3314 if (align > symbol_get_tc (lcomm_sym)->align)
3315 symbol_get_tc (lcomm_sym)->align = align;
3316 }
3317
3318 if (lcomm)
3319 {
3320 /* Make sym an offset from lcomm_sym. */
3321 S_SET_SEGMENT (sym, bss_section);
3322 symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
3323 S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
3324 symbol_get_frag (lcomm_sym)->fr_offset += size;
3325 }
3326
3327 subseg_set (current_seg, current_subseg);
3328
3329 demand_empty_rest_of_line ();
3330 }
3331
3332 /* The .csect pseudo-op. This switches us into a different
3333 subsegment. The first argument is a symbol whose value is the
3334 start of the .csect. In COFF, csect symbols get special aux
3335 entries defined by the x_csect field of union internal_auxent. The
3336 optional second argument is the alignment (the default is 2). */
3337
3338 static void
3339 ppc_csect (int ignore ATTRIBUTE_UNUSED)
3340 {
3341 char *name;
3342 char endc;
3343 symbolS *sym;
3344 offsetT align;
3345
3346 name = input_line_pointer;
3347 endc = get_symbol_end ();
3348
3349 sym = symbol_find_or_make (name);
3350
3351 *input_line_pointer = endc;
3352
3353 if (S_GET_NAME (sym)[0] == '\0')
3354 {
3355 /* An unnamed csect is assumed to be [PR]. */
3356 symbol_get_tc (sym)->symbol_class = XMC_PR;
3357 }
3358
3359 align = 2;
3360 if (*input_line_pointer == ',')
3361 {
3362 ++input_line_pointer;
3363 align = get_absolute_expression ();
3364 }
3365
3366 ppc_change_csect (sym, align);
3367
3368 demand_empty_rest_of_line ();
3369 }
3370
3371 /* Change to a different csect. */
3372
3373 static void
3374 ppc_change_csect (symbolS *sym, offsetT align)
3375 {
3376 if (S_IS_DEFINED (sym))
3377 subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
3378 else
3379 {
3380 symbolS **list_ptr;
3381 int after_toc;
3382 int hold_chunksize;
3383 symbolS *list;
3384 int is_code;
3385 segT sec;
3386
3387 /* This is a new csect. We need to look at the symbol class to
3388 figure out whether it should go in the text section or the
3389 data section. */
3390 after_toc = 0;
3391 is_code = 0;
3392 switch (symbol_get_tc (sym)->symbol_class)
3393 {
3394 case XMC_PR:
3395 case XMC_RO:
3396 case XMC_DB:
3397 case XMC_GL:
3398 case XMC_XO:
3399 case XMC_SV:
3400 case XMC_TI:
3401 case XMC_TB:
3402 S_SET_SEGMENT (sym, text_section);
3403 symbol_get_tc (sym)->subseg = ppc_text_subsegment;
3404 ++ppc_text_subsegment;
3405 list_ptr = &ppc_text_csects;
3406 is_code = 1;
3407 break;
3408 case XMC_RW:
3409 case XMC_TC0:
3410 case XMC_TC:
3411 case XMC_DS:
3412 case XMC_UA:
3413 case XMC_BS:
3414 case XMC_UC:
3415 if (ppc_toc_csect != NULL
3416 && (symbol_get_tc (ppc_toc_csect)->subseg + 1
3417 == ppc_data_subsegment))
3418 after_toc = 1;
3419 S_SET_SEGMENT (sym, data_section);
3420 symbol_get_tc (sym)->subseg = ppc_data_subsegment;
3421 ++ppc_data_subsegment;
3422 list_ptr = &ppc_data_csects;
3423 break;
3424 default:
3425 abort ();
3426 }
3427
3428 /* We set the obstack chunk size to a small value before
3429 changing subsegments, so that we don't use a lot of memory
3430 space for what may be a small section. */
3431 hold_chunksize = chunksize;
3432 chunksize = 64;
3433
3434 sec = subseg_new (segment_name (S_GET_SEGMENT (sym)),
3435 symbol_get_tc (sym)->subseg);
3436
3437 chunksize = hold_chunksize;
3438
3439 if (after_toc)
3440 ppc_after_toc_frag = frag_now;
3441
3442 record_alignment (sec, align);
3443 if (is_code)
3444 frag_align_code (align, 0);
3445 else
3446 frag_align (align, 0, 0);
3447
3448 symbol_set_frag (sym, frag_now);
3449 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3450
3451 symbol_get_tc (sym)->align = align;
3452 symbol_get_tc (sym)->output = 1;
3453 symbol_get_tc (sym)->within = sym;
3454
3455 for (list = *list_ptr;
3456 symbol_get_tc (list)->next != (symbolS *) NULL;
3457 list = symbol_get_tc (list)->next)
3458 ;
3459 symbol_get_tc (list)->next = sym;
3460
3461 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3462 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3463 &symbol_lastP);
3464 }
3465
3466 ppc_current_csect = sym;
3467 }
3468
3469 /* This function handles the .text and .data pseudo-ops. These
3470 pseudo-ops aren't really used by XCOFF; we implement them for the
3471 convenience of people who aren't used to XCOFF. */
3472
3473 static void
3474 ppc_section (int type)
3475 {
3476 const char *name;
3477 symbolS *sym;
3478
3479 if (type == 't')
3480 name = ".text[PR]";
3481 else if (type == 'd')
3482 name = ".data[RW]";
3483 else
3484 abort ();
3485
3486 sym = symbol_find_or_make (name);
3487
3488 ppc_change_csect (sym, 2);
3489
3490 demand_empty_rest_of_line ();
3491 }
3492
3493 /* This function handles the .section pseudo-op. This is mostly to
3494 give an error, since XCOFF only supports .text, .data and .bss, but
3495 we do permit the user to name the text or data section. */
3496
3497 static void
3498 ppc_named_section (int ignore ATTRIBUTE_UNUSED)
3499 {
3500 char *user_name;
3501 const char *real_name;
3502 char c;
3503 symbolS *sym;
3504
3505 user_name = input_line_pointer;
3506 c = get_symbol_end ();
3507
3508 if (strcmp (user_name, ".text") == 0)
3509 real_name = ".text[PR]";
3510 else if (strcmp (user_name, ".data") == 0)
3511 real_name = ".data[RW]";
3512 else
3513 {
3514 as_bad (_("The XCOFF file format does not support arbitrary sections"));
3515 *input_line_pointer = c;
3516 ignore_rest_of_line ();
3517 return;
3518 }
3519
3520 *input_line_pointer = c;
3521
3522 sym = symbol_find_or_make (real_name);
3523
3524 ppc_change_csect (sym, 2);
3525
3526 demand_empty_rest_of_line ();
3527 }
3528
3529 /* The .extern pseudo-op. We create an undefined symbol. */
3530
3531 static void
3532 ppc_extern (int ignore ATTRIBUTE_UNUSED)
3533 {
3534 char *name;
3535 char endc;
3536
3537 name = input_line_pointer;
3538 endc = get_symbol_end ();
3539
3540 (void) symbol_find_or_make (name);
3541
3542 *input_line_pointer = endc;
3543
3544 demand_empty_rest_of_line ();
3545 }
3546
3547 /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
3548
3549 static void
3550 ppc_lglobl (int ignore ATTRIBUTE_UNUSED)
3551 {
3552 char *name;
3553 char endc;
3554 symbolS *sym;
3555
3556 name = input_line_pointer;
3557 endc = get_symbol_end ();
3558
3559 sym = symbol_find_or_make (name);
3560
3561 *input_line_pointer = endc;
3562
3563 symbol_get_tc (sym)->output = 1;
3564
3565 demand_empty_rest_of_line ();
3566 }
3567
3568 /* The .ref pseudo-op. It takes a list of symbol names and inserts R_REF
3569 relocations at the beginning of the current csect.
3570
3571 (In principle, there's no reason why the relocations _have_ to be at
3572 the beginning. Anywhere in the csect would do. However, inserting
3573 at the beginning is what the native assmebler does, and it helps to
3574 deal with cases where the .ref statements follow the section contents.)
3575
3576 ??? .refs don't work for empty .csects. However, the native assembler
3577 doesn't report an error in this case, and neither yet do we. */
3578
3579 static void
3580 ppc_ref (int ignore ATTRIBUTE_UNUSED)
3581 {
3582 char *name;
3583 char c;
3584
3585 if (ppc_current_csect == NULL)
3586 {
3587 as_bad (_(".ref outside .csect"));
3588 ignore_rest_of_line ();
3589 return;
3590 }
3591
3592 do
3593 {
3594 name = input_line_pointer;
3595 c = get_symbol_end ();
3596
3597 fix_at_start (symbol_get_frag (ppc_current_csect), 0,
3598 symbol_find_or_make (name), 0, FALSE, BFD_RELOC_NONE);
3599
3600 *input_line_pointer = c;
3601 SKIP_WHITESPACE ();
3602 c = *input_line_pointer;
3603 if (c == ',')
3604 {
3605 input_line_pointer++;
3606 SKIP_WHITESPACE ();
3607 if (is_end_of_line[(unsigned char) *input_line_pointer])
3608 {
3609 as_bad (_("missing symbol name"));
3610 ignore_rest_of_line ();
3611 return;
3612 }
3613 }
3614 }
3615 while (c == ',');
3616
3617 demand_empty_rest_of_line ();
3618 }
3619
3620 /* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
3621 although I don't know why it bothers. */
3622
3623 static void
3624 ppc_rename (int ignore ATTRIBUTE_UNUSED)
3625 {
3626 char *name;
3627 char endc;
3628 symbolS *sym;
3629 int len;
3630
3631 name = input_line_pointer;
3632 endc = get_symbol_end ();
3633
3634 sym = symbol_find_or_make (name);
3635
3636 *input_line_pointer = endc;
3637
3638 if (*input_line_pointer != ',')
3639 {
3640 as_bad (_("missing rename string"));
3641 ignore_rest_of_line ();
3642 return;
3643 }
3644 ++input_line_pointer;
3645
3646 symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
3647
3648 demand_empty_rest_of_line ();
3649 }
3650
3651 /* The .stabx pseudo-op. This is similar to a normal .stabs
3652 pseudo-op, but slightly different. A sample is
3653 .stabx "main:F-1",.main,142,0
3654 The first argument is the symbol name to create. The second is the
3655 value, and the third is the storage class. The fourth seems to be
3656 always zero, and I am assuming it is the type. */
3657
3658 static void
3659 ppc_stabx (int ignore ATTRIBUTE_UNUSED)
3660 {
3661 char *name;
3662 int len;
3663 symbolS *sym;
3664 expressionS exp;
3665
3666 name = demand_copy_C_string (&len);
3667
3668 if (*input_line_pointer != ',')
3669 {
3670 as_bad (_("missing value"));
3671 return;
3672 }
3673 ++input_line_pointer;
3674
3675 ppc_stab_symbol = TRUE;
3676 sym = symbol_make (name);
3677 ppc_stab_symbol = FALSE;
3678
3679 symbol_get_tc (sym)->real_name = name;
3680
3681 (void) expression (&exp);
3682
3683 switch (exp.X_op)
3684 {
3685 case O_illegal:
3686 case O_absent:
3687 case O_big:
3688 as_bad (_("illegal .stabx expression; zero assumed"));
3689 exp.X_add_number = 0;
3690 /* Fall through. */
3691 case O_constant:
3692 S_SET_VALUE (sym, (valueT) exp.X_add_number);
3693 symbol_set_frag (sym, &zero_address_frag);
3694 break;
3695
3696 case O_symbol:
3697 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
3698 symbol_set_value_expression (sym, &exp);
3699 else
3700 {
3701 S_SET_VALUE (sym,
3702 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
3703 symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
3704 }
3705 break;
3706
3707 default:
3708 /* The value is some complex expression. This will probably
3709 fail at some later point, but this is probably the right
3710 thing to do here. */
3711 symbol_set_value_expression (sym, &exp);
3712 break;
3713 }
3714
3715 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3716 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3717
3718 if (*input_line_pointer != ',')
3719 {
3720 as_bad (_("missing class"));
3721 return;
3722 }
3723 ++input_line_pointer;
3724
3725 S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
3726
3727 if (*input_line_pointer != ',')
3728 {
3729 as_bad (_("missing type"));
3730 return;
3731 }
3732 ++input_line_pointer;
3733
3734 S_SET_DATA_TYPE (sym, get_absolute_expression ());
3735
3736 symbol_get_tc (sym)->output = 1;
3737
3738 if (S_GET_STORAGE_CLASS (sym) == C_STSYM) {
3739
3740 symbol_get_tc (sym)->within = ppc_current_block;
3741
3742 /* In this case :
3743
3744 .bs name
3745 .stabx "z",arrays_,133,0
3746 .es
3747
3748 .comm arrays_,13768,3
3749
3750 resolve_symbol_value will copy the exp's "within" into sym's when the
3751 offset is 0. Since this seems to be corner case problem,
3752 only do the correction for storage class C_STSYM. A better solution
3753 would be to have the tc field updated in ppc_symbol_new_hook. */
3754
3755 if (exp.X_op == O_symbol)
3756 {
3757 symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block;
3758 }
3759 }
3760
3761 if (exp.X_op != O_symbol
3762 || ! S_IS_EXTERNAL (exp.X_add_symbol)
3763 || S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
3764 ppc_frob_label (sym);
3765 else
3766 {
3767 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3768 symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
3769 if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
3770 symbol_get_tc (ppc_current_csect)->within = sym;
3771 }
3772
3773 demand_empty_rest_of_line ();
3774 }
3775
3776 /* The .function pseudo-op. This takes several arguments. The first
3777 argument seems to be the external name of the symbol. The second
3778 argument seems to be the label for the start of the function. gcc
3779 uses the same name for both. I have no idea what the third and
3780 fourth arguments are meant to be. The optional fifth argument is
3781 an expression for the size of the function. In COFF this symbol
3782 gets an aux entry like that used for a csect. */
3783
3784 static void
3785 ppc_function (int ignore ATTRIBUTE_UNUSED)
3786 {
3787 char *name;
3788 char endc;
3789 char *s;
3790 symbolS *ext_sym;
3791 symbolS *lab_sym;
3792
3793 name = input_line_pointer;
3794 endc = get_symbol_end ();
3795
3796 /* Ignore any [PR] suffix. */
3797 name = ppc_canonicalize_symbol_name (name);
3798 s = strchr (name, '[');
3799 if (s != (char *) NULL
3800 && strcmp (s + 1, "PR]") == 0)
3801 *s = '\0';
3802
3803 ext_sym = symbol_find_or_make (name);
3804
3805 *input_line_pointer = endc;
3806
3807 if (*input_line_pointer != ',')
3808 {
3809 as_bad (_("missing symbol name"));
3810 ignore_rest_of_line ();
3811 return;
3812 }
3813 ++input_line_pointer;
3814
3815 name = input_line_pointer;
3816 endc = get_symbol_end ();
3817
3818 lab_sym = symbol_find_or_make (name);
3819
3820 *input_line_pointer = endc;
3821
3822 if (ext_sym != lab_sym)
3823 {
3824 expressionS exp;
3825
3826 exp.X_op = O_symbol;
3827 exp.X_add_symbol = lab_sym;
3828 exp.X_op_symbol = NULL;
3829 exp.X_add_number = 0;
3830 exp.X_unsigned = 0;
3831 symbol_set_value_expression (ext_sym, &exp);
3832 }
3833
3834 if (symbol_get_tc (ext_sym)->symbol_class == -1)
3835 symbol_get_tc (ext_sym)->symbol_class = XMC_PR;
3836 symbol_get_tc (ext_sym)->output = 1;
3837
3838 if (*input_line_pointer == ',')
3839 {
3840 expressionS exp;
3841
3842 /* Ignore the third argument. */
3843 ++input_line_pointer;
3844 expression (& exp);
3845 if (*input_line_pointer == ',')
3846 {
3847 /* Ignore the fourth argument. */
3848 ++input_line_pointer;
3849 expression (& exp);
3850 if (*input_line_pointer == ',')
3851 {
3852 /* The fifth argument is the function size. */
3853 ++input_line_pointer;
3854 symbol_get_tc (ext_sym)->size = symbol_new ("L0\001",
3855 absolute_section,
3856 (valueT) 0,
3857 &zero_address_frag);
3858 pseudo_set (symbol_get_tc (ext_sym)->size);
3859 }
3860 }
3861 }
3862
3863 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
3864 SF_SET_FUNCTION (ext_sym);
3865 SF_SET_PROCESS (ext_sym);
3866 coff_add_linesym (ext_sym);
3867
3868 demand_empty_rest_of_line ();
3869 }
3870
3871 /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
3872 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
3873 with the correct line number */
3874
3875 static symbolS *saved_bi_sym = 0;
3876
3877 static void
3878 ppc_bf (int ignore ATTRIBUTE_UNUSED)
3879 {
3880 symbolS *sym;
3881
3882 sym = symbol_make (".bf");
3883 S_SET_SEGMENT (sym, text_section);
3884 symbol_set_frag (sym, frag_now);
3885 S_SET_VALUE (sym, frag_now_fix ());
3886 S_SET_STORAGE_CLASS (sym, C_FCN);
3887
3888 coff_line_base = get_absolute_expression ();
3889
3890 S_SET_NUMBER_AUXILIARY (sym, 1);
3891 SA_SET_SYM_LNNO (sym, coff_line_base);
3892
3893 /* Line number for bi. */
3894 if (saved_bi_sym)
3895 {
3896 S_SET_VALUE (saved_bi_sym, coff_n_line_nos);
3897 saved_bi_sym = 0;
3898 }
3899
3900
3901 symbol_get_tc (sym)->output = 1;
3902
3903 ppc_frob_label (sym);
3904
3905 demand_empty_rest_of_line ();
3906 }
3907
3908 /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
3909 ".ef", except that the line number is absolute, not relative to the
3910 most recent ".bf" symbol. */
3911
3912 static void
3913 ppc_ef (int ignore ATTRIBUTE_UNUSED)
3914 {
3915 symbolS *sym;
3916
3917 sym = symbol_make (".ef");
3918 S_SET_SEGMENT (sym, text_section);
3919 symbol_set_frag (sym, frag_now);
3920 S_SET_VALUE (sym, frag_now_fix ());
3921 S_SET_STORAGE_CLASS (sym, C_FCN);
3922 S_SET_NUMBER_AUXILIARY (sym, 1);
3923 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3924 symbol_get_tc (sym)->output = 1;
3925
3926 ppc_frob_label (sym);
3927
3928 demand_empty_rest_of_line ();
3929 }
3930
3931 /* The .bi and .ei pseudo-ops. These take a string argument and
3932 generates a C_BINCL or C_EINCL symbol, which goes at the start of
3933 the symbol list. The value of .bi will be know when the next .bf
3934 is encountered. */
3935
3936 static void
3937 ppc_biei (int ei)
3938 {
3939 static symbolS *last_biei;
3940
3941 char *name;
3942 int len;
3943 symbolS *sym;
3944 symbolS *look;
3945
3946 name = demand_copy_C_string (&len);
3947
3948 /* The value of these symbols is actually file offset. Here we set
3949 the value to the index into the line number entries. In
3950 ppc_frob_symbols we set the fix_line field, which will cause BFD
3951 to do the right thing. */
3952
3953 sym = symbol_make (name);
3954 /* obj-coff.c currently only handles line numbers correctly in the
3955 .text section. */
3956 S_SET_SEGMENT (sym, text_section);
3957 S_SET_VALUE (sym, coff_n_line_nos);
3958 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3959
3960 S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
3961 symbol_get_tc (sym)->output = 1;
3962
3963 /* Save bi. */
3964 if (ei)
3965 saved_bi_sym = 0;
3966 else
3967 saved_bi_sym = sym;
3968
3969 for (look = last_biei ? last_biei : symbol_rootP;
3970 (look != (symbolS *) NULL
3971 && (S_GET_STORAGE_CLASS (look) == C_FILE
3972 || S_GET_STORAGE_CLASS (look) == C_BINCL
3973 || S_GET_STORAGE_CLASS (look) == C_EINCL));
3974 look = symbol_next (look))
3975 ;
3976 if (look != (symbolS *) NULL)
3977 {
3978 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3979 symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
3980 last_biei = sym;
3981 }
3982
3983 demand_empty_rest_of_line ();
3984 }
3985
3986 /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
3987 There is one argument, which is a csect symbol. The value of the
3988 .bs symbol is the index of this csect symbol. */
3989
3990 static void
3991 ppc_bs (int ignore ATTRIBUTE_UNUSED)
3992 {
3993 char *name;
3994 char endc;
3995 symbolS *csect;
3996 symbolS *sym;
3997
3998 if (ppc_current_block != NULL)
3999 as_bad (_("nested .bs blocks"));
4000
4001 name = input_line_pointer;
4002 endc = get_symbol_end ();
4003
4004 csect = symbol_find_or_make (name);
4005
4006 *input_line_pointer = endc;
4007
4008 sym = symbol_make (".bs");
4009 S_SET_SEGMENT (sym, now_seg);
4010 S_SET_STORAGE_CLASS (sym, C_BSTAT);
4011 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
4012 symbol_get_tc (sym)->output = 1;
4013
4014 symbol_get_tc (sym)->within = csect;
4015
4016 ppc_frob_label (sym);
4017
4018 ppc_current_block = sym;
4019
4020 demand_empty_rest_of_line ();
4021 }
4022
4023 /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
4024
4025 static void
4026 ppc_es (int ignore ATTRIBUTE_UNUSED)
4027 {
4028 symbolS *sym;
4029
4030 if (ppc_current_block == NULL)
4031 as_bad (_(".es without preceding .bs"));
4032
4033 sym = symbol_make (".es");
4034 S_SET_SEGMENT (sym, now_seg);
4035 S_SET_STORAGE_CLASS (sym, C_ESTAT);
4036 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
4037 symbol_get_tc (sym)->output = 1;
4038
4039 ppc_frob_label (sym);
4040
4041 ppc_current_block = NULL;
4042
4043 demand_empty_rest_of_line ();
4044 }
4045
4046 /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
4047 line number. */
4048
4049 static void
4050 ppc_bb (int ignore ATTRIBUTE_UNUSED)
4051 {
4052 symbolS *sym;
4053
4054 sym = symbol_make (".bb");
4055 S_SET_SEGMENT (sym, text_section);
4056 symbol_set_frag (sym, frag_now);
4057 S_SET_VALUE (sym, frag_now_fix ());
4058 S_SET_STORAGE_CLASS (sym, C_BLOCK);
4059
4060 S_SET_NUMBER_AUXILIARY (sym, 1);
4061 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
4062
4063 symbol_get_tc (sym)->output = 1;
4064
4065 SF_SET_PROCESS (sym);
4066
4067 ppc_frob_label (sym);
4068
4069 demand_empty_rest_of_line ();
4070 }
4071
4072 /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
4073 line number. */
4074
4075 static void
4076 ppc_eb (int ignore ATTRIBUTE_UNUSED)
4077 {
4078 symbolS *sym;
4079
4080 sym = symbol_make (".eb");
4081 S_SET_SEGMENT (sym, text_section);
4082 symbol_set_frag (sym, frag_now);
4083 S_SET_VALUE (sym, frag_now_fix ());
4084 S_SET_STORAGE_CLASS (sym, C_BLOCK);
4085 S_SET_NUMBER_AUXILIARY (sym, 1);
4086 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
4087 symbol_get_tc (sym)->output = 1;
4088
4089 SF_SET_PROCESS (sym);
4090
4091 ppc_frob_label (sym);
4092
4093 demand_empty_rest_of_line ();
4094 }
4095
4096 /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
4097 specified name. */
4098
4099 static void
4100 ppc_bc (int ignore ATTRIBUTE_UNUSED)
4101 {
4102 char *name;
4103 int len;
4104 symbolS *sym;
4105
4106 name = demand_copy_C_string (&len);
4107 sym = symbol_make (name);
4108 S_SET_SEGMENT (sym, ppc_coff_debug_section);
4109 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
4110 S_SET_STORAGE_CLASS (sym, C_BCOMM);
4111 S_SET_VALUE (sym, 0);
4112 symbol_get_tc (sym)->output = 1;
4113
4114 ppc_frob_label (sym);
4115
4116 demand_empty_rest_of_line ();
4117 }
4118
4119 /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
4120
4121 static void
4122 ppc_ec (int ignore ATTRIBUTE_UNUSED)
4123 {
4124 symbolS *sym;
4125
4126 sym = symbol_make (".ec");
4127 S_SET_SEGMENT (sym, ppc_coff_debug_section);
4128 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
4129 S_SET_STORAGE_CLASS (sym, C_ECOMM);
4130 S_SET_VALUE (sym, 0);
4131 symbol_get_tc (sym)->output = 1;
4132
4133 ppc_frob_label (sym);
4134
4135 demand_empty_rest_of_line ();
4136 }
4137
4138 /* The .toc pseudo-op. Switch to the .toc subsegment. */
4139
4140 static void
4141 ppc_toc (int ignore ATTRIBUTE_UNUSED)
4142 {
4143 if (ppc_toc_csect != (symbolS *) NULL)
4144 subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
4145 else
4146 {
4147 subsegT subseg;
4148 symbolS *sym;
4149 symbolS *list;
4150
4151 subseg = ppc_data_subsegment;
4152 ++ppc_data_subsegment;
4153
4154 subseg_new (segment_name (data_section), subseg);
4155 ppc_toc_frag = frag_now;
4156
4157 sym = symbol_find_or_make ("TOC[TC0]");
4158 symbol_set_frag (sym, frag_now);
4159 S_SET_SEGMENT (sym, data_section);
4160 S_SET_VALUE (sym, (valueT) frag_now_fix ());
4161 symbol_get_tc (sym)->subseg = subseg;
4162 symbol_get_tc (sym)->output = 1;
4163 symbol_get_tc (sym)->within = sym;
4164
4165 ppc_toc_csect = sym;
4166
4167 for (list = ppc_data_csects;
4168 symbol_get_tc (list)->next != (symbolS *) NULL;
4169 list = symbol_get_tc (list)->next)
4170 ;
4171 symbol_get_tc (list)->next = sym;
4172
4173 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
4174 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
4175 &symbol_lastP);
4176 }
4177
4178 ppc_current_csect = ppc_toc_csect;
4179
4180 demand_empty_rest_of_line ();
4181 }
4182
4183 /* The AIX assembler automatically aligns the operands of a .long or
4184 .short pseudo-op, and we want to be compatible. */
4185
4186 static void
4187 ppc_xcoff_cons (int log_size)
4188 {
4189 frag_align (log_size, 0, 0);
4190 record_alignment (now_seg, log_size);
4191 cons (1 << log_size);
4192 }
4193
4194 static void
4195 ppc_vbyte (int dummy ATTRIBUTE_UNUSED)
4196 {
4197 expressionS exp;
4198 int byte_count;
4199
4200 (void) expression (&exp);
4201
4202 if (exp.X_op != O_constant)
4203 {
4204 as_bad (_("non-constant byte count"));
4205 return;
4206 }
4207
4208 byte_count = exp.X_add_number;
4209
4210 if (*input_line_pointer != ',')
4211 {
4212 as_bad (_("missing value"));
4213 return;
4214 }
4215
4216 ++input_line_pointer;
4217 cons (byte_count);
4218 }
4219
4220 #endif /* OBJ_XCOFF */
4221 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
4222 \f
4223 /* The .tc pseudo-op. This is used when generating either XCOFF or
4224 ELF. This takes two or more arguments.
4225
4226 When generating XCOFF output, the first argument is the name to
4227 give to this location in the toc; this will be a symbol with class
4228 TC. The rest of the arguments are N-byte values to actually put at
4229 this location in the TOC; often there is just one more argument, a
4230 relocatable symbol reference. The size of the value to store
4231 depends on target word size. A 32-bit target uses 4-byte values, a
4232 64-bit target uses 8-byte values.
4233
4234 When not generating XCOFF output, the arguments are the same, but
4235 the first argument is simply ignored. */
4236
4237 static void
4238 ppc_tc (int ignore ATTRIBUTE_UNUSED)
4239 {
4240 #ifdef OBJ_XCOFF
4241
4242 /* Define the TOC symbol name. */
4243 {
4244 char *name;
4245 char endc;
4246 symbolS *sym;
4247
4248 if (ppc_toc_csect == (symbolS *) NULL
4249 || ppc_toc_csect != ppc_current_csect)
4250 {
4251 as_bad (_(".tc not in .toc section"));
4252 ignore_rest_of_line ();
4253 return;
4254 }
4255
4256 name = input_line_pointer;
4257 endc = get_symbol_end ();
4258
4259 sym = symbol_find_or_make (name);
4260
4261 *input_line_pointer = endc;
4262
4263 if (S_IS_DEFINED (sym))
4264 {
4265 symbolS *label;
4266
4267 label = symbol_get_tc (ppc_current_csect)->within;
4268 if (symbol_get_tc (label)->symbol_class != XMC_TC0)
4269 {
4270 as_bad (_(".tc with no label"));
4271 ignore_rest_of_line ();
4272 return;
4273 }
4274
4275 S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
4276 symbol_set_frag (label, symbol_get_frag (sym));
4277 S_SET_VALUE (label, S_GET_VALUE (sym));
4278
4279 while (! is_end_of_line[(unsigned char) *input_line_pointer])
4280 ++input_line_pointer;
4281
4282 return;
4283 }
4284
4285 S_SET_SEGMENT (sym, now_seg);
4286 symbol_set_frag (sym, frag_now);
4287 S_SET_VALUE (sym, (valueT) frag_now_fix ());
4288 symbol_get_tc (sym)->symbol_class = XMC_TC;
4289 symbol_get_tc (sym)->output = 1;
4290
4291 ppc_frob_label (sym);
4292 }
4293
4294 #endif /* OBJ_XCOFF */
4295 #ifdef OBJ_ELF
4296 int align;
4297
4298 /* Skip the TOC symbol name. */
4299 while (is_part_of_name (*input_line_pointer)
4300 || *input_line_pointer == ' '
4301 || *input_line_pointer == '['
4302 || *input_line_pointer == ']'
4303 || *input_line_pointer == '{'
4304 || *input_line_pointer == '}')
4305 ++input_line_pointer;
4306
4307 /* Align to a four/eight byte boundary. */
4308 align = ppc_obj64 ? 3 : 2;
4309 frag_align (align, 0, 0);
4310 record_alignment (now_seg, align);
4311 #endif /* OBJ_ELF */
4312
4313 if (*input_line_pointer != ',')
4314 demand_empty_rest_of_line ();
4315 else
4316 {
4317 ++input_line_pointer;
4318 cons (ppc_obj64 ? 8 : 4);
4319 }
4320 }
4321
4322 /* Pseudo-op .machine. */
4323
4324 static void
4325 ppc_machine (int ignore ATTRIBUTE_UNUSED)
4326 {
4327 char *cpu_string;
4328 #define MAX_HISTORY 100
4329 static ppc_cpu_t *cpu_history;
4330 static int curr_hist;
4331
4332 SKIP_WHITESPACE ();
4333
4334 if (*input_line_pointer == '"')
4335 {
4336 int len;
4337 cpu_string = demand_copy_C_string (&len);
4338 }
4339 else
4340 {
4341 char c;
4342 cpu_string = input_line_pointer;
4343 c = get_symbol_end ();
4344 cpu_string = xstrdup (cpu_string);
4345 *input_line_pointer = c;
4346 }
4347
4348 if (cpu_string != NULL)
4349 {
4350 ppc_cpu_t old_cpu = ppc_cpu;
4351 ppc_cpu_t new_cpu;
4352 char *p;
4353
4354 for (p = cpu_string; *p != 0; p++)
4355 *p = TOLOWER (*p);
4356
4357 if (strcmp (cpu_string, "push") == 0)
4358 {
4359 if (cpu_history == NULL)
4360 cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history));
4361
4362 if (curr_hist >= MAX_HISTORY)
4363 as_bad (_(".machine stack overflow"));
4364 else
4365 cpu_history[curr_hist++] = ppc_cpu;
4366 }
4367 else if (strcmp (cpu_string, "pop") == 0)
4368 {
4369 if (curr_hist <= 0)
4370 as_bad (_(".machine stack underflow"));
4371 else
4372 ppc_cpu = cpu_history[--curr_hist];
4373 }
4374 else if ((new_cpu = ppc_parse_cpu (ppc_cpu, cpu_string)) != 0)
4375 ppc_cpu = new_cpu;
4376 else
4377 as_bad (_("invalid machine `%s'"), cpu_string);
4378
4379 if (ppc_cpu != old_cpu)
4380 ppc_setup_opcodes ();
4381 }
4382
4383 demand_empty_rest_of_line ();
4384 }
4385
4386 /* See whether a symbol is in the TOC section. */
4387
4388 static int
4389 ppc_is_toc_sym (symbolS *sym)
4390 {
4391 #ifdef OBJ_XCOFF
4392 return symbol_get_tc (sym)->symbol_class == XMC_TC;
4393 #endif
4394 #ifdef OBJ_ELF
4395 const char *sname = segment_name (S_GET_SEGMENT (sym));
4396 if (ppc_obj64)
4397 return strcmp (sname, ".toc") == 0;
4398 else
4399 return strcmp (sname, ".got") == 0;
4400 #endif
4401 }
4402 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
4403 \f
4404 #ifdef TE_PE
4405
4406 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
4407
4408 /* Set the current section. */
4409 static void
4410 ppc_set_current_section (segT new)
4411 {
4412 ppc_previous_section = ppc_current_section;
4413 ppc_current_section = new;
4414 }
4415
4416 /* pseudo-op: .previous
4417 behaviour: toggles the current section with the previous section.
4418 errors: None
4419 warnings: "No previous section" */
4420
4421 static void
4422 ppc_previous (int ignore ATTRIBUTE_UNUSED)
4423 {
4424 symbolS *tmp;
4425
4426 if (ppc_previous_section == NULL)
4427 {
4428 as_warn (_("No previous section to return to. Directive ignored."));
4429 return;
4430 }
4431
4432 subseg_set (ppc_previous_section, 0);
4433
4434 ppc_set_current_section (ppc_previous_section);
4435 }
4436
4437 /* pseudo-op: .pdata
4438 behaviour: predefined read only data section
4439 double word aligned
4440 errors: None
4441 warnings: None
4442 initial: .section .pdata "adr3"
4443 a - don't know -- maybe a misprint
4444 d - initialized data
4445 r - readable
4446 3 - double word aligned (that would be 4 byte boundary)
4447
4448 commentary:
4449 Tag index tables (also known as the function table) for exception
4450 handling, debugging, etc. */
4451
4452 static void
4453 ppc_pdata (int ignore ATTRIBUTE_UNUSED)
4454 {
4455 if (pdata_section == 0)
4456 {
4457 pdata_section = subseg_new (".pdata", 0);
4458
4459 bfd_set_section_flags (stdoutput, pdata_section,
4460 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4461 | SEC_READONLY | SEC_DATA ));
4462
4463 bfd_set_section_alignment (stdoutput, pdata_section, 2);
4464 }
4465 else
4466 {
4467 pdata_section = subseg_new (".pdata", 0);
4468 }
4469 ppc_set_current_section (pdata_section);
4470 }
4471
4472 /* pseudo-op: .ydata
4473 behaviour: predefined read only data section
4474 double word aligned
4475 errors: None
4476 warnings: None
4477 initial: .section .ydata "drw3"
4478 a - don't know -- maybe a misprint
4479 d - initialized data
4480 r - readable
4481 3 - double word aligned (that would be 4 byte boundary)
4482 commentary:
4483 Tag tables (also known as the scope table) for exception handling,
4484 debugging, etc. */
4485
4486 static void
4487 ppc_ydata (int ignore ATTRIBUTE_UNUSED)
4488 {
4489 if (ydata_section == 0)
4490 {
4491 ydata_section = subseg_new (".ydata", 0);
4492 bfd_set_section_flags (stdoutput, ydata_section,
4493 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4494 | SEC_READONLY | SEC_DATA ));
4495
4496 bfd_set_section_alignment (stdoutput, ydata_section, 3);
4497 }
4498 else
4499 {
4500 ydata_section = subseg_new (".ydata", 0);
4501 }
4502 ppc_set_current_section (ydata_section);
4503 }
4504
4505 /* pseudo-op: .reldata
4506 behaviour: predefined read write data section
4507 double word aligned (4-byte)
4508 FIXME: relocation is applied to it
4509 FIXME: what's the difference between this and .data?
4510 errors: None
4511 warnings: None
4512 initial: .section .reldata "drw3"
4513 d - initialized data
4514 r - readable
4515 w - writeable
4516 3 - double word aligned (that would be 8 byte boundary)
4517
4518 commentary:
4519 Like .data, but intended to hold data subject to relocation, such as
4520 function descriptors, etc. */
4521
4522 static void
4523 ppc_reldata (int ignore ATTRIBUTE_UNUSED)
4524 {
4525 if (reldata_section == 0)
4526 {
4527 reldata_section = subseg_new (".reldata", 0);
4528
4529 bfd_set_section_flags (stdoutput, reldata_section,
4530 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4531 | SEC_DATA));
4532
4533 bfd_set_section_alignment (stdoutput, reldata_section, 2);
4534 }
4535 else
4536 {
4537 reldata_section = subseg_new (".reldata", 0);
4538 }
4539 ppc_set_current_section (reldata_section);
4540 }
4541
4542 /* pseudo-op: .rdata
4543 behaviour: predefined read only data section
4544 double word aligned
4545 errors: None
4546 warnings: None
4547 initial: .section .rdata "dr3"
4548 d - initialized data
4549 r - readable
4550 3 - double word aligned (that would be 4 byte boundary) */
4551
4552 static void
4553 ppc_rdata (int ignore ATTRIBUTE_UNUSED)
4554 {
4555 if (rdata_section == 0)
4556 {
4557 rdata_section = subseg_new (".rdata", 0);
4558 bfd_set_section_flags (stdoutput, rdata_section,
4559 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4560 | SEC_READONLY | SEC_DATA ));
4561
4562 bfd_set_section_alignment (stdoutput, rdata_section, 2);
4563 }
4564 else
4565 {
4566 rdata_section = subseg_new (".rdata", 0);
4567 }
4568 ppc_set_current_section (rdata_section);
4569 }
4570
4571 /* pseudo-op: .ualong
4572 behaviour: much like .int, with the exception that no alignment is
4573 performed.
4574 FIXME: test the alignment statement
4575 errors: None
4576 warnings: None */
4577
4578 static void
4579 ppc_ualong (int ignore ATTRIBUTE_UNUSED)
4580 {
4581 /* Try for long. */
4582 cons (4);
4583 }
4584
4585 /* pseudo-op: .znop <symbol name>
4586 behaviour: Issue a nop instruction
4587 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
4588 the supplied symbol name.
4589 errors: None
4590 warnings: Missing symbol name */
4591
4592 static void
4593 ppc_znop (int ignore ATTRIBUTE_UNUSED)
4594 {
4595 unsigned long insn;
4596 const struct powerpc_opcode *opcode;
4597 expressionS ex;
4598 char *f;
4599 symbolS *sym;
4600 char *symbol_name;
4601 char c;
4602 char *name;
4603 unsigned int exp;
4604 flagword flags;
4605 asection *sec;
4606
4607 /* Strip out the symbol name. */
4608 symbol_name = input_line_pointer;
4609 c = get_symbol_end ();
4610
4611 name = xmalloc (input_line_pointer - symbol_name + 1);
4612 strcpy (name, symbol_name);
4613
4614 sym = symbol_find_or_make (name);
4615
4616 *input_line_pointer = c;
4617
4618 SKIP_WHITESPACE ();
4619
4620 /* Look up the opcode in the hash table. */
4621 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop");
4622
4623 /* Stick in the nop. */
4624 insn = opcode->opcode;
4625
4626 /* Write out the instruction. */
4627 f = frag_more (4);
4628 md_number_to_chars (f, insn, 4);
4629 fix_new (frag_now,
4630 f - frag_now->fr_literal,
4631 4,
4632 sym,
4633 0,
4634 0,
4635 BFD_RELOC_16_GOT_PCREL);
4636
4637 }
4638
4639 /* pseudo-op:
4640 behaviour:
4641 errors:
4642 warnings: */
4643
4644 static void
4645 ppc_pe_comm (int lcomm)
4646 {
4647 char *name;
4648 char c;
4649 char *p;
4650 offsetT temp;
4651 symbolS *symbolP;
4652 offsetT align;
4653
4654 name = input_line_pointer;
4655 c = get_symbol_end ();
4656
4657 /* just after name is now '\0'. */
4658 p = input_line_pointer;
4659 *p = c;
4660 SKIP_WHITESPACE ();
4661 if (*input_line_pointer != ',')
4662 {
4663 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
4664 ignore_rest_of_line ();
4665 return;
4666 }
4667
4668 input_line_pointer++; /* skip ',' */
4669 if ((temp = get_absolute_expression ()) < 0)
4670 {
4671 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
4672 ignore_rest_of_line ();
4673 return;
4674 }
4675
4676 if (! lcomm)
4677 {
4678 /* The third argument to .comm is the alignment. */
4679 if (*input_line_pointer != ',')
4680 align = 3;
4681 else
4682 {
4683 ++input_line_pointer;
4684 align = get_absolute_expression ();
4685 if (align <= 0)
4686 {
4687 as_warn (_("ignoring bad alignment"));
4688 align = 3;
4689 }
4690 }
4691 }
4692
4693 *p = 0;
4694 symbolP = symbol_find_or_make (name);
4695
4696 *p = c;
4697 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
4698 {
4699 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
4700 S_GET_NAME (symbolP));
4701 ignore_rest_of_line ();
4702 return;
4703 }
4704
4705 if (S_GET_VALUE (symbolP))
4706 {
4707 if (S_GET_VALUE (symbolP) != (valueT) temp)
4708 as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
4709 S_GET_NAME (symbolP),
4710 (long) S_GET_VALUE (symbolP),
4711 (long) temp);
4712 }
4713 else
4714 {
4715 S_SET_VALUE (symbolP, (valueT) temp);
4716 S_SET_EXTERNAL (symbolP);
4717 S_SET_SEGMENT (symbolP, bfd_com_section_ptr);
4718 }
4719
4720 demand_empty_rest_of_line ();
4721 }
4722
4723 /*
4724 * implement the .section pseudo op:
4725 * .section name {, "flags"}
4726 * ^ ^
4727 * | +--- optional flags: 'b' for bss
4728 * | 'i' for info
4729 * +-- section name 'l' for lib
4730 * 'n' for noload
4731 * 'o' for over
4732 * 'w' for data
4733 * 'd' (apparently m88k for data)
4734 * 'x' for text
4735 * But if the argument is not a quoted string, treat it as a
4736 * subsegment number.
4737 *
4738 * FIXME: this is a copy of the section processing from obj-coff.c, with
4739 * additions/changes for the moto-pas assembler support. There are three
4740 * categories:
4741 *
4742 * FIXME: I just noticed this. This doesn't work at all really. It it
4743 * setting bits that bfd probably neither understands or uses. The
4744 * correct approach (?) will have to incorporate extra fields attached
4745 * to the section to hold the system specific stuff. (krk)
4746 *
4747 * Section Contents:
4748 * 'a' - unknown - referred to in documentation, but no definition supplied
4749 * 'c' - section has code
4750 * 'd' - section has initialized data
4751 * 'u' - section has uninitialized data
4752 * 'i' - section contains directives (info)
4753 * 'n' - section can be discarded
4754 * 'R' - remove section at link time
4755 *
4756 * Section Protection:
4757 * 'r' - section is readable
4758 * 'w' - section is writeable
4759 * 'x' - section is executable
4760 * 's' - section is sharable
4761 *
4762 * Section Alignment:
4763 * '0' - align to byte boundary
4764 * '1' - align to halfword undary
4765 * '2' - align to word boundary
4766 * '3' - align to doubleword boundary
4767 * '4' - align to quadword boundary
4768 * '5' - align to 32 byte boundary
4769 * '6' - align to 64 byte boundary
4770 *
4771 */
4772
4773 void
4774 ppc_pe_section (int ignore ATTRIBUTE_UNUSED)
4775 {
4776 /* Strip out the section name. */
4777 char *section_name;
4778 char c;
4779 char *name;
4780 unsigned int exp;
4781 flagword flags;
4782 segT sec;
4783 int align;
4784
4785 section_name = input_line_pointer;
4786 c = get_symbol_end ();
4787
4788 name = xmalloc (input_line_pointer - section_name + 1);
4789 strcpy (name, section_name);
4790
4791 *input_line_pointer = c;
4792
4793 SKIP_WHITESPACE ();
4794
4795 exp = 0;
4796 flags = SEC_NO_FLAGS;
4797
4798 if (strcmp (name, ".idata$2") == 0)
4799 {
4800 align = 0;
4801 }
4802 else if (strcmp (name, ".idata$3") == 0)
4803 {
4804 align = 0;
4805 }
4806 else if (strcmp (name, ".idata$4") == 0)
4807 {
4808 align = 2;
4809 }
4810 else if (strcmp (name, ".idata$5") == 0)
4811 {
4812 align = 2;
4813 }
4814 else if (strcmp (name, ".idata$6") == 0)
4815 {
4816 align = 1;
4817 }
4818 else
4819 /* Default alignment to 16 byte boundary. */
4820 align = 4;
4821
4822 if (*input_line_pointer == ',')
4823 {
4824 ++input_line_pointer;
4825 SKIP_WHITESPACE ();
4826 if (*input_line_pointer != '"')
4827 exp = get_absolute_expression ();
4828 else
4829 {
4830 ++input_line_pointer;
4831 while (*input_line_pointer != '"'
4832 && ! is_end_of_line[(unsigned char) *input_line_pointer])
4833 {
4834 switch (*input_line_pointer)
4835 {
4836 /* Section Contents */
4837 case 'a': /* unknown */
4838 as_bad (_("Unsupported section attribute -- 'a'"));
4839 break;
4840 case 'c': /* code section */
4841 flags |= SEC_CODE;
4842 break;
4843 case 'd': /* section has initialized data */
4844 flags |= SEC_DATA;
4845 break;
4846 case 'u': /* section has uninitialized data */
4847 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
4848 in winnt.h */
4849 flags |= SEC_ROM;
4850 break;
4851 case 'i': /* section contains directives (info) */
4852 /* FIXME: This is IMAGE_SCN_LNK_INFO
4853 in winnt.h */
4854 flags |= SEC_HAS_CONTENTS;
4855 break;
4856 case 'n': /* section can be discarded */
4857 flags &=~ SEC_LOAD;
4858 break;
4859 case 'R': /* Remove section at link time */
4860 flags |= SEC_NEVER_LOAD;
4861 break;
4862 #if IFLICT_BRAIN_DAMAGE
4863 /* Section Protection */
4864 case 'r': /* section is readable */
4865 flags |= IMAGE_SCN_MEM_READ;
4866 break;
4867 case 'w': /* section is writeable */
4868 flags |= IMAGE_SCN_MEM_WRITE;
4869 break;
4870 case 'x': /* section is executable */
4871 flags |= IMAGE_SCN_MEM_EXECUTE;
4872 break;
4873 case 's': /* section is sharable */
4874 flags |= IMAGE_SCN_MEM_SHARED;
4875 break;
4876
4877 /* Section Alignment */
4878 case '0': /* align to byte boundary */
4879 flags |= IMAGE_SCN_ALIGN_1BYTES;
4880 align = 0;
4881 break;
4882 case '1': /* align to halfword boundary */
4883 flags |= IMAGE_SCN_ALIGN_2BYTES;
4884 align = 1;
4885 break;
4886 case '2': /* align to word boundary */
4887 flags |= IMAGE_SCN_ALIGN_4BYTES;
4888 align = 2;
4889 break;
4890 case '3': /* align to doubleword boundary */
4891 flags |= IMAGE_SCN_ALIGN_8BYTES;
4892 align = 3;
4893 break;
4894 case '4': /* align to quadword boundary */
4895 flags |= IMAGE_SCN_ALIGN_16BYTES;
4896 align = 4;
4897 break;
4898 case '5': /* align to 32 byte boundary */
4899 flags |= IMAGE_SCN_ALIGN_32BYTES;
4900 align = 5;
4901 break;
4902 case '6': /* align to 64 byte boundary */
4903 flags |= IMAGE_SCN_ALIGN_64BYTES;
4904 align = 6;
4905 break;
4906 #endif
4907 default:
4908 as_bad (_("unknown section attribute '%c'"),
4909 *input_line_pointer);
4910 break;
4911 }
4912 ++input_line_pointer;
4913 }
4914 if (*input_line_pointer == '"')
4915 ++input_line_pointer;
4916 }
4917 }
4918
4919 sec = subseg_new (name, (subsegT) exp);
4920
4921 ppc_set_current_section (sec);
4922
4923 if (flags != SEC_NO_FLAGS)
4924 {
4925 if (! bfd_set_section_flags (stdoutput, sec, flags))
4926 as_bad (_("error setting flags for \"%s\": %s"),
4927 bfd_section_name (stdoutput, sec),
4928 bfd_errmsg (bfd_get_error ()));
4929 }
4930
4931 bfd_set_section_alignment (stdoutput, sec, align);
4932 }
4933
4934 static void
4935 ppc_pe_function (int ignore ATTRIBUTE_UNUSED)
4936 {
4937 char *name;
4938 char endc;
4939 symbolS *ext_sym;
4940
4941 name = input_line_pointer;
4942 endc = get_symbol_end ();
4943
4944 ext_sym = symbol_find_or_make (name);
4945
4946 *input_line_pointer = endc;
4947
4948 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
4949 SF_SET_FUNCTION (ext_sym);
4950 SF_SET_PROCESS (ext_sym);
4951 coff_add_linesym (ext_sym);
4952
4953 demand_empty_rest_of_line ();
4954 }
4955
4956 static void
4957 ppc_pe_tocd (int ignore ATTRIBUTE_UNUSED)
4958 {
4959 if (tocdata_section == 0)
4960 {
4961 tocdata_section = subseg_new (".tocd", 0);
4962 /* FIXME: section flags won't work. */
4963 bfd_set_section_flags (stdoutput, tocdata_section,
4964 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4965 | SEC_READONLY | SEC_DATA));
4966
4967 bfd_set_section_alignment (stdoutput, tocdata_section, 2);
4968 }
4969 else
4970 {
4971 rdata_section = subseg_new (".tocd", 0);
4972 }
4973
4974 ppc_set_current_section (tocdata_section);
4975
4976 demand_empty_rest_of_line ();
4977 }
4978
4979 /* Don't adjust TOC relocs to use the section symbol. */
4980
4981 int
4982 ppc_pe_fix_adjustable (fixS *fix)
4983 {
4984 return fix->fx_r_type != BFD_RELOC_PPC_TOC16;
4985 }
4986
4987 #endif
4988 \f
4989 #ifdef OBJ_XCOFF
4990
4991 /* XCOFF specific symbol and file handling. */
4992
4993 /* Canonicalize the symbol name. We use the to force the suffix, if
4994 any, to use square brackets, and to be in upper case. */
4995
4996 char *
4997 ppc_canonicalize_symbol_name (char *name)
4998 {
4999 char *s;
5000
5001 if (ppc_stab_symbol)
5002 return name;
5003
5004 for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
5005 ;
5006 if (*s != '\0')
5007 {
5008 char brac;
5009
5010 if (*s == '[')
5011 brac = ']';
5012 else
5013 {
5014 *s = '[';
5015 brac = '}';
5016 }
5017
5018 for (s++; *s != '\0' && *s != brac; s++)
5019 *s = TOUPPER (*s);
5020
5021 if (*s == '\0' || s[1] != '\0')
5022 as_bad (_("bad symbol suffix"));
5023
5024 *s = ']';
5025 }
5026
5027 return name;
5028 }
5029
5030 /* Set the class of a symbol based on the suffix, if any. This is
5031 called whenever a new symbol is created. */
5032
5033 void
5034 ppc_symbol_new_hook (symbolS *sym)
5035 {
5036 struct ppc_tc_sy *tc;
5037 const char *s;
5038
5039 tc = symbol_get_tc (sym);
5040 tc->next = NULL;
5041 tc->output = 0;
5042 tc->symbol_class = -1;
5043 tc->real_name = NULL;
5044 tc->subseg = 0;
5045 tc->align = 0;
5046 tc->size = NULL;
5047 tc->within = NULL;
5048
5049 if (ppc_stab_symbol)
5050 return;
5051
5052 s = strchr (S_GET_NAME (sym), '[');
5053 if (s == (const char *) NULL)
5054 {
5055 /* There is no suffix. */
5056 return;
5057 }
5058
5059 ++s;
5060
5061 switch (s[0])
5062 {
5063 case 'B':
5064 if (strcmp (s, "BS]") == 0)
5065 tc->symbol_class = XMC_BS;
5066 break;
5067 case 'D':
5068 if (strcmp (s, "DB]") == 0)
5069 tc->symbol_class = XMC_DB;
5070 else if (strcmp (s, "DS]") == 0)
5071 tc->symbol_class = XMC_DS;
5072 break;
5073 case 'G':
5074 if (strcmp (s, "GL]") == 0)
5075 tc->symbol_class = XMC_GL;
5076 break;
5077 case 'P':
5078 if (strcmp (s, "PR]") == 0)
5079 tc->symbol_class = XMC_PR;
5080 break;
5081 case 'R':
5082 if (strcmp (s, "RO]") == 0)
5083 tc->symbol_class = XMC_RO;
5084 else if (strcmp (s, "RW]") == 0)
5085 tc->symbol_class = XMC_RW;
5086 break;
5087 case 'S':
5088 if (strcmp (s, "SV]") == 0)
5089 tc->symbol_class = XMC_SV;
5090 break;
5091 case 'T':
5092 if (strcmp (s, "TC]") == 0)
5093 tc->symbol_class = XMC_TC;
5094 else if (strcmp (s, "TI]") == 0)
5095 tc->symbol_class = XMC_TI;
5096 else if (strcmp (s, "TB]") == 0)
5097 tc->symbol_class = XMC_TB;
5098 else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
5099 tc->symbol_class = XMC_TC0;
5100 break;
5101 case 'U':
5102 if (strcmp (s, "UA]") == 0)
5103 tc->symbol_class = XMC_UA;
5104 else if (strcmp (s, "UC]") == 0)
5105 tc->symbol_class = XMC_UC;
5106 break;
5107 case 'X':
5108 if (strcmp (s, "XO]") == 0)
5109 tc->symbol_class = XMC_XO;
5110 break;
5111 }
5112
5113 if (tc->symbol_class == -1)
5114 as_bad (_("Unrecognized symbol suffix"));
5115 }
5116
5117 /* Set the class of a label based on where it is defined. This
5118 handles symbols without suffixes. Also, move the symbol so that it
5119 follows the csect symbol. */
5120
5121 void
5122 ppc_frob_label (symbolS *sym)
5123 {
5124 if (ppc_current_csect != (symbolS *) NULL)
5125 {
5126 if (symbol_get_tc (sym)->symbol_class == -1)
5127 symbol_get_tc (sym)->symbol_class = symbol_get_tc (ppc_current_csect)->symbol_class;
5128
5129 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
5130 symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
5131 &symbol_rootP, &symbol_lastP);
5132 symbol_get_tc (ppc_current_csect)->within = sym;
5133 }
5134
5135 #ifdef OBJ_ELF
5136 dwarf2_emit_label (sym);
5137 #endif
5138 }
5139
5140 /* This variable is set by ppc_frob_symbol if any absolute symbols are
5141 seen. It tells ppc_adjust_symtab whether it needs to look through
5142 the symbols. */
5143
5144 static bfd_boolean ppc_saw_abs;
5145
5146 /* Change the name of a symbol just before writing it out. Set the
5147 real name if the .rename pseudo-op was used. Otherwise, remove any
5148 class suffix. Return 1 if the symbol should not be included in the
5149 symbol table. */
5150
5151 int
5152 ppc_frob_symbol (symbolS *sym)
5153 {
5154 static symbolS *ppc_last_function;
5155 static symbolS *set_end;
5156
5157 /* Discard symbols that should not be included in the output symbol
5158 table. */
5159 if (! symbol_used_in_reloc_p (sym)
5160 && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
5161 || (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym))
5162 && ! symbol_get_tc (sym)->output
5163 && S_GET_STORAGE_CLASS (sym) != C_FILE)))
5164 return 1;
5165
5166 /* This one will disappear anyway. Don't make a csect sym for it. */
5167 if (sym == abs_section_sym)
5168 return 1;
5169
5170 if (symbol_get_tc (sym)->real_name != (char *) NULL)
5171 S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
5172 else
5173 {
5174 const char *name;
5175 const char *s;
5176
5177 name = S_GET_NAME (sym);
5178 s = strchr (name, '[');
5179 if (s != (char *) NULL)
5180 {
5181 unsigned int len;
5182 char *snew;
5183
5184 len = s - name;
5185 snew = xmalloc (len + 1);
5186 memcpy (snew, name, len);
5187 snew[len] = '\0';
5188
5189 S_SET_NAME (sym, snew);
5190 }
5191 }
5192
5193 if (set_end != (symbolS *) NULL)
5194 {
5195 SA_SET_SYM_ENDNDX (set_end, sym);
5196 set_end = NULL;
5197 }
5198
5199 if (SF_GET_FUNCTION (sym))
5200 {
5201 if (ppc_last_function != (symbolS *) NULL)
5202 as_bad (_("two .function pseudo-ops with no intervening .ef"));
5203 ppc_last_function = sym;
5204 if (symbol_get_tc (sym)->size != (symbolS *) NULL)
5205 {
5206 resolve_symbol_value (symbol_get_tc (sym)->size);
5207 SA_SET_SYM_FSIZE (sym,
5208 (long) S_GET_VALUE (symbol_get_tc (sym)->size));
5209 }
5210 }
5211 else if (S_GET_STORAGE_CLASS (sym) == C_FCN
5212 && strcmp (S_GET_NAME (sym), ".ef") == 0)
5213 {
5214 if (ppc_last_function == (symbolS *) NULL)
5215 as_bad (_(".ef with no preceding .function"));
5216 else
5217 {
5218 set_end = ppc_last_function;
5219 ppc_last_function = NULL;
5220
5221 /* We don't have a C_EFCN symbol, but we need to force the
5222 COFF backend to believe that it has seen one. */
5223 coff_last_function = NULL;
5224 }
5225 }
5226
5227 if (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym))
5228 && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
5229 && S_GET_STORAGE_CLASS (sym) != C_FILE
5230 && S_GET_STORAGE_CLASS (sym) != C_FCN
5231 && S_GET_STORAGE_CLASS (sym) != C_BLOCK
5232 && S_GET_STORAGE_CLASS (sym) != C_BSTAT
5233 && S_GET_STORAGE_CLASS (sym) != C_ESTAT
5234 && S_GET_STORAGE_CLASS (sym) != C_BINCL
5235 && S_GET_STORAGE_CLASS (sym) != C_EINCL
5236 && S_GET_SEGMENT (sym) != ppc_coff_debug_section)
5237 S_SET_STORAGE_CLASS (sym, C_HIDEXT);
5238
5239 if (S_GET_STORAGE_CLASS (sym) == C_EXT
5240 || S_GET_STORAGE_CLASS (sym) == C_AIX_WEAKEXT
5241 || S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
5242 {
5243 int i;
5244 union internal_auxent *a;
5245
5246 /* Create a csect aux. */
5247 i = S_GET_NUMBER_AUXILIARY (sym);
5248 S_SET_NUMBER_AUXILIARY (sym, i + 1);
5249 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent;
5250 if (symbol_get_tc (sym)->symbol_class == XMC_TC0)
5251 {
5252 /* This is the TOC table. */
5253 know (strcmp (S_GET_NAME (sym), "TOC") == 0);
5254 a->x_csect.x_scnlen.l = 0;
5255 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
5256 }
5257 else if (symbol_get_tc (sym)->subseg != 0)
5258 {
5259 /* This is a csect symbol. x_scnlen is the size of the
5260 csect. */
5261 if (symbol_get_tc (sym)->next == (symbolS *) NULL)
5262 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
5263 S_GET_SEGMENT (sym))
5264 - S_GET_VALUE (sym));
5265 else
5266 {
5267 resolve_symbol_value (symbol_get_tc (sym)->next);
5268 a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next)
5269 - S_GET_VALUE (sym));
5270 }
5271 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD;
5272 }
5273 else if (S_GET_SEGMENT (sym) == bss_section)
5274 {
5275 /* This is a common symbol. */
5276 a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset;
5277 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM;
5278 if (S_IS_EXTERNAL (sym))
5279 symbol_get_tc (sym)->symbol_class = XMC_RW;
5280 else
5281 symbol_get_tc (sym)->symbol_class = XMC_BS;
5282 }
5283 else if (S_GET_SEGMENT (sym) == absolute_section)
5284 {
5285 /* This is an absolute symbol. The csect will be created by
5286 ppc_adjust_symtab. */
5287 ppc_saw_abs = TRUE;
5288 a->x_csect.x_smtyp = XTY_LD;
5289 if (symbol_get_tc (sym)->symbol_class == -1)
5290 symbol_get_tc (sym)->symbol_class = XMC_XO;
5291 }
5292 else if (! S_IS_DEFINED (sym))
5293 {
5294 /* This is an external symbol. */
5295 a->x_csect.x_scnlen.l = 0;
5296 a->x_csect.x_smtyp = XTY_ER;
5297 }
5298 else if (symbol_get_tc (sym)->symbol_class == XMC_TC)
5299 {
5300 symbolS *next;
5301
5302 /* This is a TOC definition. x_scnlen is the size of the
5303 TOC entry. */
5304 next = symbol_next (sym);
5305 while (symbol_get_tc (next)->symbol_class == XMC_TC0)
5306 next = symbol_next (next);
5307 if (next == (symbolS *) NULL
5308 || symbol_get_tc (next)->symbol_class != XMC_TC)
5309 {
5310 if (ppc_after_toc_frag == (fragS *) NULL)
5311 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
5312 data_section)
5313 - S_GET_VALUE (sym));
5314 else
5315 a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address
5316 - S_GET_VALUE (sym));
5317 }
5318 else
5319 {
5320 resolve_symbol_value (next);
5321 a->x_csect.x_scnlen.l = (S_GET_VALUE (next)
5322 - S_GET_VALUE (sym));
5323 }
5324 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
5325 }
5326 else
5327 {
5328 symbolS *csect;
5329
5330 /* This is a normal symbol definition. x_scnlen is the
5331 symbol index of the containing csect. */
5332 if (S_GET_SEGMENT (sym) == text_section)
5333 csect = ppc_text_csects;
5334 else if (S_GET_SEGMENT (sym) == data_section)
5335 csect = ppc_data_csects;
5336 else
5337 abort ();
5338
5339 /* Skip the initial dummy symbol. */
5340 csect = symbol_get_tc (csect)->next;
5341
5342 if (csect == (symbolS *) NULL)
5343 {
5344 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
5345 a->x_csect.x_scnlen.l = 0;
5346 }
5347 else
5348 {
5349 while (symbol_get_tc (csect)->next != (symbolS *) NULL)
5350 {
5351 resolve_symbol_value (symbol_get_tc (csect)->next);
5352 if (S_GET_VALUE (symbol_get_tc (csect)->next)
5353 > S_GET_VALUE (sym))
5354 break;
5355 csect = symbol_get_tc (csect)->next;
5356 }
5357
5358 a->x_csect.x_scnlen.p =
5359 coffsymbol (symbol_get_bfdsym (csect))->native;
5360 coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen =
5361 1;
5362 }
5363 a->x_csect.x_smtyp = XTY_LD;
5364 }
5365
5366 a->x_csect.x_parmhash = 0;
5367 a->x_csect.x_snhash = 0;
5368 if (symbol_get_tc (sym)->symbol_class == -1)
5369 a->x_csect.x_smclas = XMC_PR;
5370 else
5371 a->x_csect.x_smclas = symbol_get_tc (sym)->symbol_class;
5372 a->x_csect.x_stab = 0;
5373 a->x_csect.x_snstab = 0;
5374
5375 /* Don't let the COFF backend resort these symbols. */
5376 symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
5377 }
5378 else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
5379 {
5380 /* We want the value to be the symbol index of the referenced
5381 csect symbol. BFD will do that for us if we set the right
5382 flags. */
5383 asymbol *bsym = symbol_get_bfdsym (symbol_get_tc (sym)->within);
5384 combined_entry_type *c = coffsymbol (bsym)->native;
5385
5386 S_SET_VALUE (sym, (valueT) (size_t) c);
5387 coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
5388 }
5389 else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
5390 {
5391 symbolS *block;
5392 symbolS *csect;
5393
5394 /* The value is the offset from the enclosing csect. */
5395 block = symbol_get_tc (sym)->within;
5396 csect = symbol_get_tc (block)->within;
5397 resolve_symbol_value (csect);
5398 S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect));
5399 }
5400 else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
5401 || S_GET_STORAGE_CLASS (sym) == C_EINCL)
5402 {
5403 /* We want the value to be a file offset into the line numbers.
5404 BFD will do that for us if we set the right flags. We have
5405 already set the value correctly. */
5406 coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
5407 }
5408
5409 return 0;
5410 }
5411
5412 /* Adjust the symbol table. This creates csect symbols for all
5413 absolute symbols. */
5414
5415 void
5416 ppc_adjust_symtab (void)
5417 {
5418 symbolS *sym;
5419
5420 if (! ppc_saw_abs)
5421 return;
5422
5423 for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
5424 {
5425 symbolS *csect;
5426 int i;
5427 union internal_auxent *a;
5428
5429 if (S_GET_SEGMENT (sym) != absolute_section)
5430 continue;
5431
5432 csect = symbol_create (".abs[XO]", absolute_section,
5433 S_GET_VALUE (sym), &zero_address_frag);
5434 symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
5435 S_SET_STORAGE_CLASS (csect, C_HIDEXT);
5436 i = S_GET_NUMBER_AUXILIARY (csect);
5437 S_SET_NUMBER_AUXILIARY (csect, i + 1);
5438 a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent;
5439 a->x_csect.x_scnlen.l = 0;
5440 a->x_csect.x_smtyp = XTY_SD;
5441 a->x_csect.x_parmhash = 0;
5442 a->x_csect.x_snhash = 0;
5443 a->x_csect.x_smclas = XMC_XO;
5444 a->x_csect.x_stab = 0;
5445 a->x_csect.x_snstab = 0;
5446
5447 symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
5448
5449 i = S_GET_NUMBER_AUXILIARY (sym);
5450 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent;
5451 a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native;
5452 coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1;
5453 }
5454
5455 ppc_saw_abs = FALSE;
5456 }
5457
5458 /* Set the VMA for a section. This is called on all the sections in
5459 turn. */
5460
5461 void
5462 ppc_frob_section (asection *sec)
5463 {
5464 static bfd_vma vma = 0;
5465
5466 vma = md_section_align (sec, vma);
5467 bfd_set_section_vma (stdoutput, sec, vma);
5468 vma += bfd_section_size (stdoutput, sec);
5469 }
5470
5471 #endif /* OBJ_XCOFF */
5472 \f
5473 char *
5474 md_atof (int type, char *litp, int *sizep)
5475 {
5476 return ieee_md_atof (type, litp, sizep, target_big_endian);
5477 }
5478
5479 /* Write a value out to the object file, using the appropriate
5480 endianness. */
5481
5482 void
5483 md_number_to_chars (char *buf, valueT val, int n)
5484 {
5485 if (target_big_endian)
5486 number_to_chars_bigendian (buf, val, n);
5487 else
5488 number_to_chars_littleendian (buf, val, n);
5489 }
5490
5491 /* Align a section (I don't know why this is machine dependent). */
5492
5493 valueT
5494 md_section_align (asection *seg ATTRIBUTE_UNUSED, valueT addr)
5495 {
5496 #ifdef OBJ_ELF
5497 return addr;
5498 #else
5499 int align = bfd_get_section_alignment (stdoutput, seg);
5500
5501 return ((addr + (1 << align) - 1) & (-1 << align));
5502 #endif
5503 }
5504
5505 /* We don't have any form of relaxing. */
5506
5507 int
5508 md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED,
5509 asection *seg ATTRIBUTE_UNUSED)
5510 {
5511 abort ();
5512 return 0;
5513 }
5514
5515 /* Convert a machine dependent frag. We never generate these. */
5516
5517 void
5518 md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
5519 asection *sec ATTRIBUTE_UNUSED,
5520 fragS *fragp ATTRIBUTE_UNUSED)
5521 {
5522 abort ();
5523 }
5524
5525 /* We have no need to default values of symbols. */
5526
5527 symbolS *
5528 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
5529 {
5530 return 0;
5531 }
5532 \f
5533 /* Functions concerning relocs. */
5534
5535 /* The location from which a PC relative jump should be calculated,
5536 given a PC relative reloc. */
5537
5538 long
5539 md_pcrel_from_section (fixS *fixp, segT sec ATTRIBUTE_UNUSED)
5540 {
5541 return fixp->fx_frag->fr_address + fixp->fx_where;
5542 }
5543
5544 #ifdef OBJ_XCOFF
5545
5546 /* This is called to see whether a fixup should be adjusted to use a
5547 section symbol. We take the opportunity to change a fixup against
5548 a symbol in the TOC subsegment into a reloc against the
5549 corresponding .tc symbol. */
5550
5551 int
5552 ppc_fix_adjustable (fixS *fix)
5553 {
5554 valueT val = resolve_symbol_value (fix->fx_addsy);
5555 segT symseg = S_GET_SEGMENT (fix->fx_addsy);
5556 TC_SYMFIELD_TYPE *tc;
5557
5558 if (symseg == absolute_section)
5559 return 0;
5560
5561 if (ppc_toc_csect != (symbolS *) NULL
5562 && fix->fx_addsy != ppc_toc_csect
5563 && symseg == data_section
5564 && val >= ppc_toc_frag->fr_address
5565 && (ppc_after_toc_frag == (fragS *) NULL
5566 || val < ppc_after_toc_frag->fr_address))
5567 {
5568 symbolS *sy;
5569
5570 for (sy = symbol_next (ppc_toc_csect);
5571 sy != (symbolS *) NULL;
5572 sy = symbol_next (sy))
5573 {
5574 TC_SYMFIELD_TYPE *sy_tc = symbol_get_tc (sy);
5575
5576 if (sy_tc->symbol_class == XMC_TC0)
5577 continue;
5578 if (sy_tc->symbol_class != XMC_TC)
5579 break;
5580 if (val == resolve_symbol_value (sy))
5581 {
5582 fix->fx_addsy = sy;
5583 fix->fx_addnumber = val - ppc_toc_frag->fr_address;
5584 return 0;
5585 }
5586 }
5587
5588 as_bad_where (fix->fx_file, fix->fx_line,
5589 _("symbol in .toc does not match any .tc"));
5590 }
5591
5592 /* Possibly adjust the reloc to be against the csect. */
5593 tc = symbol_get_tc (fix->fx_addsy);
5594 if (tc->subseg == 0
5595 && tc->symbol_class != XMC_TC0
5596 && tc->symbol_class != XMC_TC
5597 && symseg != bss_section
5598 /* Don't adjust if this is a reloc in the toc section. */
5599 && (symseg != data_section
5600 || ppc_toc_csect == NULL
5601 || val < ppc_toc_frag->fr_address
5602 || (ppc_after_toc_frag != NULL
5603 && val >= ppc_after_toc_frag->fr_address)))
5604 {
5605 symbolS *csect;
5606 symbolS *next_csect;
5607
5608 if (symseg == text_section)
5609 csect = ppc_text_csects;
5610 else if (symseg == data_section)
5611 csect = ppc_data_csects;
5612 else
5613 abort ();
5614
5615 /* Skip the initial dummy symbol. */
5616 csect = symbol_get_tc (csect)->next;
5617
5618 if (csect != (symbolS *) NULL)
5619 {
5620 while ((next_csect = symbol_get_tc (csect)->next) != (symbolS *) NULL
5621 && (symbol_get_frag (next_csect)->fr_address <= val))
5622 {
5623 /* If the csect address equals the symbol value, then we
5624 have to look through the full symbol table to see
5625 whether this is the csect we want. Note that we will
5626 only get here if the csect has zero length. */
5627 if (symbol_get_frag (csect)->fr_address == val
5628 && S_GET_VALUE (csect) == val)
5629 {
5630 symbolS *scan;
5631
5632 for (scan = symbol_next (csect);
5633 scan != NULL;
5634 scan = symbol_next (scan))
5635 {
5636 if (symbol_get_tc (scan)->subseg != 0)
5637 break;
5638 if (scan == fix->fx_addsy)
5639 break;
5640 }
5641
5642 /* If we found the symbol before the next csect
5643 symbol, then this is the csect we want. */
5644 if (scan == fix->fx_addsy)
5645 break;
5646 }
5647
5648 csect = next_csect;
5649 }
5650
5651 fix->fx_offset += val - symbol_get_frag (csect)->fr_address;
5652 fix->fx_addsy = csect;
5653 }
5654 return 0;
5655 }
5656
5657 /* Adjust a reloc against a .lcomm symbol to be against the base
5658 .lcomm. */
5659 if (symseg == bss_section
5660 && ! S_IS_EXTERNAL (fix->fx_addsy))
5661 {
5662 symbolS *sy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
5663
5664 fix->fx_offset += val - resolve_symbol_value (sy);
5665 fix->fx_addsy = sy;
5666 }
5667
5668 return 0;
5669 }
5670
5671 /* A reloc from one csect to another must be kept. The assembler
5672 will, of course, keep relocs between sections, and it will keep
5673 absolute relocs, but we need to force it to keep PC relative relocs
5674 between two csects in the same section. */
5675
5676 int
5677 ppc_force_relocation (fixS *fix)
5678 {
5679 /* At this point fix->fx_addsy should already have been converted to
5680 a csect symbol. If the csect does not include the fragment, then
5681 we need to force the relocation. */
5682 if (fix->fx_pcrel
5683 && fix->fx_addsy != NULL
5684 && symbol_get_tc (fix->fx_addsy)->subseg != 0
5685 && ((symbol_get_frag (fix->fx_addsy)->fr_address
5686 > fix->fx_frag->fr_address)
5687 || (symbol_get_tc (fix->fx_addsy)->next != NULL
5688 && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
5689 <= fix->fx_frag->fr_address))))
5690 return 1;
5691
5692 return generic_force_reloc (fix);
5693 }
5694
5695 #endif /* OBJ_XCOFF */
5696
5697 #ifdef OBJ_ELF
5698 /* If this function returns non-zero, it guarantees that a relocation
5699 will be emitted for a fixup. */
5700
5701 int
5702 ppc_force_relocation (fixS *fix)
5703 {
5704 /* Branch prediction relocations must force a relocation, as must
5705 the vtable description relocs. */
5706 switch (fix->fx_r_type)
5707 {
5708 case BFD_RELOC_PPC_B16_BRTAKEN:
5709 case BFD_RELOC_PPC_B16_BRNTAKEN:
5710 case BFD_RELOC_PPC_BA16_BRTAKEN:
5711 case BFD_RELOC_PPC_BA16_BRNTAKEN:
5712 case BFD_RELOC_24_PLT_PCREL:
5713 case BFD_RELOC_PPC64_TOC:
5714 return 1;
5715 default:
5716 break;
5717 }
5718
5719 if (fix->fx_r_type >= BFD_RELOC_PPC_TLS
5720 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)
5721 return 1;
5722
5723 return generic_force_reloc (fix);
5724 }
5725
5726 int
5727 ppc_fix_adjustable (fixS *fix)
5728 {
5729 return (fix->fx_r_type != BFD_RELOC_16_GOTOFF
5730 && fix->fx_r_type != BFD_RELOC_LO16_GOTOFF
5731 && fix->fx_r_type != BFD_RELOC_HI16_GOTOFF
5732 && fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
5733 && fix->fx_r_type != BFD_RELOC_GPREL16
5734 && fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT
5735 && fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY
5736 && !(fix->fx_r_type >= BFD_RELOC_PPC_TLS
5737 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA));
5738 }
5739 #endif
5740
5741 /* Implement HANDLE_ALIGN. This writes the NOP pattern into an
5742 rs_align_code frag. */
5743
5744 void
5745 ppc_handle_align (struct frag *fragP)
5746 {
5747 valueT count = (fragP->fr_next->fr_address
5748 - (fragP->fr_address + fragP->fr_fix));
5749
5750 if (count != 0 && (count & 3) == 0)
5751 {
5752 char *dest = fragP->fr_literal + fragP->fr_fix;
5753
5754 fragP->fr_var = 4;
5755 md_number_to_chars (dest, 0x60000000, 4);
5756
5757 if ((ppc_cpu & PPC_OPCODE_POWER6) != 0
5758 || (ppc_cpu & PPC_OPCODE_POWER7) != 0)
5759 {
5760 /* For power6 and power7, we want the last nop to be a group
5761 terminating one. Do this by inserting an rs_fill frag immediately
5762 after this one, with its address set to the last nop location.
5763 This will automatically reduce the number of nops in the current
5764 frag by one. */
5765 if (count > 4)
5766 {
5767 struct frag *group_nop = xmalloc (SIZEOF_STRUCT_FRAG + 4);
5768
5769 memcpy (group_nop, fragP, SIZEOF_STRUCT_FRAG);
5770 group_nop->fr_address = group_nop->fr_next->fr_address - 4;
5771 group_nop->fr_fix = 0;
5772 group_nop->fr_offset = 1;
5773 group_nop->fr_type = rs_fill;
5774 fragP->fr_next = group_nop;
5775 dest = group_nop->fr_literal;
5776 }
5777
5778 if ((ppc_cpu & PPC_OPCODE_POWER7) != 0)
5779 /* power7 group terminating nop: "ori 2,2,0". */
5780 md_number_to_chars (dest, 0x60420000, 4);
5781 else
5782 /* power6 group terminating nop: "ori 1,1,0". */
5783 md_number_to_chars (dest, 0x60210000, 4);
5784 }
5785 }
5786 }
5787
5788 /* Apply a fixup to the object code. This is called for all the
5789 fixups we generated by the call to fix_new_exp, above. In the call
5790 above we used a reloc code which was the largest legal reloc code
5791 plus the operand index. Here we undo that to recover the operand
5792 index. At this point all symbol values should be fully resolved,
5793 and we attempt to completely resolve the reloc. If we can not do
5794 that, we determine the correct reloc code and put it back in the
5795 fixup. */
5796
5797 void
5798 md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
5799 {
5800 valueT value = * valP;
5801
5802 #ifdef OBJ_ELF
5803 if (fixP->fx_addsy != NULL)
5804 {
5805 /* Hack around bfd_install_relocation brain damage. */
5806 if (fixP->fx_pcrel)
5807 value += fixP->fx_frag->fr_address + fixP->fx_where;
5808 }
5809 else
5810 fixP->fx_done = 1;
5811 #else
5812 /* FIXME FIXME FIXME: The value we are passed in *valP includes
5813 the symbol values. If we are doing this relocation the code in
5814 write.c is going to call bfd_install_relocation, which is also
5815 going to use the symbol value. That means that if the reloc is
5816 fully resolved we want to use *valP since bfd_install_relocation is
5817 not being used.
5818 However, if the reloc is not fully resolved we do not want to
5819 use *valP, and must use fx_offset instead. If the relocation
5820 is PC-relative, we then need to re-apply md_pcrel_from_section
5821 to this new relocation value. */
5822 if (fixP->fx_addsy == (symbolS *) NULL)
5823 fixP->fx_done = 1;
5824
5825 else
5826 {
5827 value = fixP->fx_offset;
5828 if (fixP->fx_pcrel)
5829 value -= md_pcrel_from_section (fixP, seg);
5830 }
5831 #endif
5832
5833 if (fixP->fx_subsy != (symbolS *) NULL)
5834 {
5835 /* We can't actually support subtracting a symbol. */
5836 as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex"));
5837 }
5838
5839 if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
5840 {
5841 int opindex;
5842 const struct powerpc_operand *operand;
5843 char *where;
5844 unsigned long insn;
5845
5846 opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
5847
5848 operand = &powerpc_operands[opindex];
5849
5850 #ifdef OBJ_XCOFF
5851 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
5852 does not generate a reloc. It uses the offset of `sym' within its
5853 csect. Other usages, such as `.long sym', generate relocs. This
5854 is the documented behaviour of non-TOC symbols. */
5855 if ((operand->flags & PPC_OPERAND_PARENS) != 0
5856 && (operand->bitm & 0xfff0) == 0xfff0
5857 && operand->shift == 0
5858 && (operand->insert == NULL || ppc_obj64)
5859 && fixP->fx_addsy != NULL
5860 && symbol_get_tc (fixP->fx_addsy)->subseg != 0
5861 && symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC
5862 && symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC0
5863 && S_GET_SEGMENT (fixP->fx_addsy) != bss_section)
5864 {
5865 value = fixP->fx_offset;
5866 fixP->fx_done = 1;
5867 }
5868 #endif
5869
5870 /* Fetch the instruction, insert the fully resolved operand
5871 value, and stuff the instruction back again. */
5872 where = fixP->fx_frag->fr_literal + fixP->fx_where;
5873 if (target_big_endian)
5874 insn = bfd_getb32 ((unsigned char *) where);
5875 else
5876 insn = bfd_getl32 ((unsigned char *) where);
5877 insn = ppc_insert_operand (insn, operand, (offsetT) value,
5878 fixP->tc_fix_data.ppc_cpu,
5879 fixP->fx_file, fixP->fx_line);
5880 if (target_big_endian)
5881 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
5882 else
5883 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
5884
5885 if (fixP->fx_done)
5886 /* Nothing else to do here. */
5887 return;
5888
5889 gas_assert (fixP->fx_addsy != NULL);
5890
5891 /* Determine a BFD reloc value based on the operand information.
5892 We are only prepared to turn a few of the operands into
5893 relocs. */
5894 if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
5895 && operand->bitm == 0x3fffffc
5896 && operand->shift == 0)
5897 fixP->fx_r_type = BFD_RELOC_PPC_B26;
5898 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
5899 && operand->bitm == 0xfffc
5900 && operand->shift == 0)
5901 {
5902 fixP->fx_r_type = BFD_RELOC_PPC_B16;
5903 #ifdef OBJ_XCOFF
5904 fixP->fx_size = 2;
5905 if (target_big_endian)
5906 fixP->fx_where += 2;
5907 #endif
5908 }
5909 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
5910 && operand->bitm == 0x3fffffc
5911 && operand->shift == 0)
5912 fixP->fx_r_type = BFD_RELOC_PPC_BA26;
5913 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
5914 && operand->bitm == 0xfffc
5915 && operand->shift == 0)
5916 {
5917 fixP->fx_r_type = BFD_RELOC_PPC_BA16;
5918 #ifdef OBJ_XCOFF
5919 fixP->fx_size = 2;
5920 if (target_big_endian)
5921 fixP->fx_where += 2;
5922 #endif
5923 }
5924 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
5925 else if ((operand->flags & PPC_OPERAND_PARENS) != 0
5926 && (operand->bitm & 0xfff0) == 0xfff0
5927 && operand->shift == 0)
5928 {
5929 if (ppc_is_toc_sym (fixP->fx_addsy))
5930 {
5931 fixP->fx_r_type = BFD_RELOC_PPC_TOC16;
5932 #ifdef OBJ_ELF
5933 if (ppc_obj64
5934 && (operand->flags & PPC_OPERAND_DS) != 0)
5935 fixP->fx_r_type = BFD_RELOC_PPC64_TOC16_DS;
5936 #endif
5937 }
5938 else
5939 {
5940 fixP->fx_r_type = BFD_RELOC_16;
5941 #ifdef OBJ_ELF
5942 if (ppc_obj64
5943 && (operand->flags & PPC_OPERAND_DS) != 0)
5944 fixP->fx_r_type = BFD_RELOC_PPC64_ADDR16_DS;
5945 #endif
5946 }
5947 fixP->fx_size = 2;
5948 if (target_big_endian)
5949 fixP->fx_where += 2;
5950 }
5951 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
5952 else
5953 {
5954 char *sfile;
5955 unsigned int sline;
5956
5957 /* Use expr_symbol_where to see if this is an expression
5958 symbol. */
5959 if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
5960 as_bad_where (fixP->fx_file, fixP->fx_line,
5961 _("unresolved expression that must be resolved"));
5962 else
5963 as_bad_where (fixP->fx_file, fixP->fx_line,
5964 _("unsupported relocation against %s"),
5965 S_GET_NAME (fixP->fx_addsy));
5966 fixP->fx_done = 1;
5967 return;
5968 }
5969 }
5970 else
5971 {
5972 #ifdef OBJ_ELF
5973 ppc_elf_validate_fix (fixP, seg);
5974 #endif
5975 switch (fixP->fx_r_type)
5976 {
5977 case BFD_RELOC_CTOR:
5978 if (ppc_obj64)
5979 goto ctor64;
5980 /* fall through */
5981
5982 case BFD_RELOC_32:
5983 if (fixP->fx_pcrel)
5984 fixP->fx_r_type = BFD_RELOC_32_PCREL;
5985 /* fall through */
5986
5987 case BFD_RELOC_RVA:
5988 case BFD_RELOC_32_PCREL:
5989 case BFD_RELOC_PPC_EMB_NADDR32:
5990 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5991 value, 4);
5992 break;
5993
5994 case BFD_RELOC_64:
5995 ctor64:
5996 if (fixP->fx_pcrel)
5997 fixP->fx_r_type = BFD_RELOC_64_PCREL;
5998 /* fall through */
5999
6000 case BFD_RELOC_64_PCREL:
6001 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6002 value, 8);
6003 break;
6004
6005 case BFD_RELOC_GPREL16:
6006 case BFD_RELOC_16_GOT_PCREL:
6007 case BFD_RELOC_16_GOTOFF:
6008 case BFD_RELOC_LO16_GOTOFF:
6009 case BFD_RELOC_HI16_GOTOFF:
6010 case BFD_RELOC_HI16_S_GOTOFF:
6011 case BFD_RELOC_16_BASEREL:
6012 case BFD_RELOC_LO16_BASEREL:
6013 case BFD_RELOC_HI16_BASEREL:
6014 case BFD_RELOC_HI16_S_BASEREL:
6015 case BFD_RELOC_PPC_EMB_NADDR16:
6016 case BFD_RELOC_PPC_EMB_NADDR16_LO:
6017 case BFD_RELOC_PPC_EMB_NADDR16_HI:
6018 case BFD_RELOC_PPC_EMB_NADDR16_HA:
6019 case BFD_RELOC_PPC_EMB_SDAI16:
6020 case BFD_RELOC_PPC_EMB_SDA2REL:
6021 case BFD_RELOC_PPC_EMB_SDA2I16:
6022 case BFD_RELOC_PPC_EMB_RELSEC16:
6023 case BFD_RELOC_PPC_EMB_RELST_LO:
6024 case BFD_RELOC_PPC_EMB_RELST_HI:
6025 case BFD_RELOC_PPC_EMB_RELST_HA:
6026 case BFD_RELOC_PPC_EMB_RELSDA:
6027 case BFD_RELOC_PPC_TOC16:
6028 #ifdef OBJ_ELF
6029 case BFD_RELOC_PPC64_TOC16_LO:
6030 case BFD_RELOC_PPC64_TOC16_HI:
6031 case BFD_RELOC_PPC64_TOC16_HA:
6032 #endif
6033 if (fixP->fx_pcrel)
6034 {
6035 if (fixP->fx_addsy != NULL)
6036 as_bad_where (fixP->fx_file, fixP->fx_line,
6037 _("cannot emit PC relative %s relocation against %s"),
6038 bfd_get_reloc_code_name (fixP->fx_r_type),
6039 S_GET_NAME (fixP->fx_addsy));
6040 else
6041 as_bad_where (fixP->fx_file, fixP->fx_line,
6042 _("cannot emit PC relative %s relocation"),
6043 bfd_get_reloc_code_name (fixP->fx_r_type));
6044 }
6045
6046 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6047 value, 2);
6048 break;
6049
6050 case BFD_RELOC_16:
6051 if (fixP->fx_pcrel)
6052 fixP->fx_r_type = BFD_RELOC_16_PCREL;
6053 /* fall through */
6054
6055 case BFD_RELOC_16_PCREL:
6056 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6057 value, 2);
6058 break;
6059
6060 case BFD_RELOC_LO16:
6061 if (fixP->fx_pcrel)
6062 fixP->fx_r_type = BFD_RELOC_LO16_PCREL;
6063 /* fall through */
6064
6065 case BFD_RELOC_LO16_PCREL:
6066 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6067 value, 2);
6068 break;
6069
6070 /* This case happens when you write, for example,
6071 lis %r3,(L1-L2)@ha
6072 where L1 and L2 are defined later. */
6073 case BFD_RELOC_HI16:
6074 if (fixP->fx_pcrel)
6075 fixP->fx_r_type = BFD_RELOC_HI16_PCREL;
6076 /* fall through */
6077
6078 case BFD_RELOC_HI16_PCREL:
6079 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6080 PPC_HI (value), 2);
6081 break;
6082
6083 case BFD_RELOC_HI16_S:
6084 if (fixP->fx_pcrel)
6085 fixP->fx_r_type = BFD_RELOC_HI16_S_PCREL;
6086 /* fall through */
6087
6088 case BFD_RELOC_HI16_S_PCREL:
6089 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6090 PPC_HA (value), 2);
6091 break;
6092
6093 #ifdef OBJ_XCOFF
6094 case BFD_RELOC_NONE:
6095 break;
6096 #endif
6097
6098 #ifdef OBJ_ELF
6099 case BFD_RELOC_PPC64_HIGHER:
6100 if (fixP->fx_pcrel)
6101 abort ();
6102 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6103 PPC_HIGHER (value), 2);
6104 break;
6105
6106 case BFD_RELOC_PPC64_HIGHER_S:
6107 if (fixP->fx_pcrel)
6108 abort ();
6109 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6110 PPC_HIGHERA (value), 2);
6111 break;
6112
6113 case BFD_RELOC_PPC64_HIGHEST:
6114 if (fixP->fx_pcrel)
6115 abort ();
6116 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6117 PPC_HIGHEST (value), 2);
6118 break;
6119
6120 case BFD_RELOC_PPC64_HIGHEST_S:
6121 if (fixP->fx_pcrel)
6122 abort ();
6123 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6124 PPC_HIGHESTA (value), 2);
6125 break;
6126
6127 case BFD_RELOC_PPC64_ADDR16_DS:
6128 case BFD_RELOC_PPC64_ADDR16_LO_DS:
6129 case BFD_RELOC_PPC64_GOT16_DS:
6130 case BFD_RELOC_PPC64_GOT16_LO_DS:
6131 case BFD_RELOC_PPC64_PLT16_LO_DS:
6132 case BFD_RELOC_PPC64_SECTOFF_DS:
6133 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
6134 case BFD_RELOC_PPC64_TOC16_DS:
6135 case BFD_RELOC_PPC64_TOC16_LO_DS:
6136 case BFD_RELOC_PPC64_PLTGOT16_DS:
6137 case BFD_RELOC_PPC64_PLTGOT16_LO_DS:
6138 if (fixP->fx_pcrel)
6139 abort ();
6140 {
6141 char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
6142 unsigned long val, mask;
6143
6144 if (target_big_endian)
6145 val = bfd_getb32 (where - 2);
6146 else
6147 val = bfd_getl32 (where);
6148 mask = 0xfffc;
6149 /* lq insns reserve the four lsbs. */
6150 if ((ppc_cpu & PPC_OPCODE_POWER4) != 0
6151 && (val & (0x3f << 26)) == (56u << 26))
6152 mask = 0xfff0;
6153 val |= value & mask;
6154 if (target_big_endian)
6155 bfd_putb16 ((bfd_vma) val, where);
6156 else
6157 bfd_putl16 ((bfd_vma) val, where);
6158 }
6159 break;
6160
6161 case BFD_RELOC_PPC_B16_BRTAKEN:
6162 case BFD_RELOC_PPC_B16_BRNTAKEN:
6163 case BFD_RELOC_PPC_BA16_BRTAKEN:
6164 case BFD_RELOC_PPC_BA16_BRNTAKEN:
6165 break;
6166
6167 case BFD_RELOC_PPC_TLS:
6168 case BFD_RELOC_PPC_TLSGD:
6169 case BFD_RELOC_PPC_TLSLD:
6170 break;
6171
6172 case BFD_RELOC_PPC_DTPMOD:
6173 case BFD_RELOC_PPC_TPREL16:
6174 case BFD_RELOC_PPC_TPREL16_LO:
6175 case BFD_RELOC_PPC_TPREL16_HI:
6176 case BFD_RELOC_PPC_TPREL16_HA:
6177 case BFD_RELOC_PPC_TPREL:
6178 case BFD_RELOC_PPC_DTPREL16:
6179 case BFD_RELOC_PPC_DTPREL16_LO:
6180 case BFD_RELOC_PPC_DTPREL16_HI:
6181 case BFD_RELOC_PPC_DTPREL16_HA:
6182 case BFD_RELOC_PPC_DTPREL:
6183 case BFD_RELOC_PPC_GOT_TLSGD16:
6184 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
6185 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
6186 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
6187 case BFD_RELOC_PPC_GOT_TLSLD16:
6188 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
6189 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
6190 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
6191 case BFD_RELOC_PPC_GOT_TPREL16:
6192 case BFD_RELOC_PPC_GOT_TPREL16_LO:
6193 case BFD_RELOC_PPC_GOT_TPREL16_HI:
6194 case BFD_RELOC_PPC_GOT_TPREL16_HA:
6195 case BFD_RELOC_PPC_GOT_DTPREL16:
6196 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
6197 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
6198 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
6199 case BFD_RELOC_PPC64_TPREL16_DS:
6200 case BFD_RELOC_PPC64_TPREL16_LO_DS:
6201 case BFD_RELOC_PPC64_TPREL16_HIGHER:
6202 case BFD_RELOC_PPC64_TPREL16_HIGHERA:
6203 case BFD_RELOC_PPC64_TPREL16_HIGHEST:
6204 case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
6205 case BFD_RELOC_PPC64_DTPREL16_DS:
6206 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
6207 case BFD_RELOC_PPC64_DTPREL16_HIGHER:
6208 case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
6209 case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
6210 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
6211 S_SET_THREAD_LOCAL (fixP->fx_addsy);
6212 break;
6213 #endif
6214 /* Because SDA21 modifies the register field, the size is set to 4
6215 bytes, rather than 2, so offset it here appropriately. */
6216 case BFD_RELOC_PPC_EMB_SDA21:
6217 if (fixP->fx_pcrel)
6218 abort ();
6219
6220 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where
6221 + ((target_big_endian) ? 2 : 0),
6222 value, 2);
6223 break;
6224
6225 case BFD_RELOC_8:
6226 if (fixP->fx_pcrel)
6227 {
6228 /* This can occur if there is a bug in the input assembler, eg:
6229 ".byte <undefined_symbol> - ." */
6230 if (fixP->fx_addsy)
6231 as_bad (_("Unable to handle reference to symbol %s"),
6232 S_GET_NAME (fixP->fx_addsy));
6233 else
6234 as_bad (_("Unable to resolve expression"));
6235 fixP->fx_done = 1;
6236 }
6237 else
6238 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
6239 value, 1);
6240 break;
6241
6242 case BFD_RELOC_24_PLT_PCREL:
6243 case BFD_RELOC_PPC_LOCAL24PC:
6244 if (!fixP->fx_pcrel && !fixP->fx_done)
6245 abort ();
6246
6247 if (fixP->fx_done)
6248 {
6249 char *where;
6250 unsigned long insn;
6251
6252 /* Fetch the instruction, insert the fully resolved operand
6253 value, and stuff the instruction back again. */
6254 where = fixP->fx_frag->fr_literal + fixP->fx_where;
6255 if (target_big_endian)
6256 insn = bfd_getb32 ((unsigned char *) where);
6257 else
6258 insn = bfd_getl32 ((unsigned char *) where);
6259 if ((value & 3) != 0)
6260 as_bad_where (fixP->fx_file, fixP->fx_line,
6261 _("must branch to an address a multiple of 4"));
6262 if ((offsetT) value < -0x40000000
6263 || (offsetT) value >= 0x40000000)
6264 as_bad_where (fixP->fx_file, fixP->fx_line,
6265 _("@local or @plt branch destination is too far away, %ld bytes"),
6266 (long) value);
6267 insn = insn | (value & 0x03fffffc);
6268 if (target_big_endian)
6269 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
6270 else
6271 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
6272 }
6273 break;
6274
6275 case BFD_RELOC_VTABLE_INHERIT:
6276 fixP->fx_done = 0;
6277 if (fixP->fx_addsy
6278 && !S_IS_DEFINED (fixP->fx_addsy)
6279 && !S_IS_WEAK (fixP->fx_addsy))
6280 S_SET_WEAK (fixP->fx_addsy);
6281 break;
6282
6283 case BFD_RELOC_VTABLE_ENTRY:
6284 fixP->fx_done = 0;
6285 break;
6286
6287 #ifdef OBJ_ELF
6288 /* Generated by reference to `sym@tocbase'. The sym is
6289 ignored by the linker. */
6290 case BFD_RELOC_PPC64_TOC:
6291 fixP->fx_done = 0;
6292 break;
6293 #endif
6294 default:
6295 fprintf (stderr,
6296 _("Gas failure, reloc value %d\n"), fixP->fx_r_type);
6297 fflush (stderr);
6298 abort ();
6299 }
6300 }
6301
6302 #ifdef OBJ_ELF
6303 fixP->fx_addnumber = value;
6304
6305 /* PowerPC uses RELA relocs, ie. the reloc addend is stored separately
6306 from the section contents. If we are going to be emitting a reloc
6307 then the section contents are immaterial, so don't warn if they
6308 happen to overflow. Leave such warnings to ld. */
6309 if (!fixP->fx_done)
6310 fixP->fx_no_overflow = 1;
6311 #else
6312 if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16)
6313 fixP->fx_addnumber = 0;
6314 else
6315 {
6316 #ifdef TE_PE
6317 fixP->fx_addnumber = 0;
6318 #else
6319 /* We want to use the offset within the toc, not the actual VMA
6320 of the symbol. */
6321 fixP->fx_addnumber =
6322 - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixP->fx_addsy))
6323 - S_GET_VALUE (ppc_toc_csect);
6324 #endif
6325 }
6326 #endif
6327 }
6328
6329 /* Generate a reloc for a fixup. */
6330
6331 arelent *
6332 tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp)
6333 {
6334 arelent *reloc;
6335
6336 reloc = (arelent *) xmalloc (sizeof (arelent));
6337
6338 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
6339 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
6340 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
6341 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
6342 if (reloc->howto == (reloc_howto_type *) NULL)
6343 {
6344 as_bad_where (fixp->fx_file, fixp->fx_line,
6345 _("reloc %d not supported by object file format"),
6346 (int) fixp->fx_r_type);
6347 return NULL;
6348 }
6349 reloc->addend = fixp->fx_addnumber;
6350
6351 return reloc;
6352 }
6353
6354 void
6355 ppc_cfi_frame_initial_instructions (void)
6356 {
6357 cfi_add_CFA_def_cfa (1, 0);
6358 }
6359
6360 int
6361 tc_ppc_regname_to_dw2regnum (char *regname)
6362 {
6363 unsigned int regnum = -1;
6364 unsigned int i;
6365 const char *p;
6366 char *q;
6367 static struct { char *name; int dw2regnum; } regnames[] =
6368 {
6369 { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 },
6370 { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 },
6371 { "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 },
6372 { "spe_acc", 111 }, { "spefscr", 112 }
6373 };
6374
6375 for (i = 0; i < ARRAY_SIZE (regnames); ++i)
6376 if (strcmp (regnames[i].name, regname) == 0)
6377 return regnames[i].dw2regnum;
6378
6379 if (regname[0] == 'r' || regname[0] == 'f' || regname[0] == 'v')
6380 {
6381 p = regname + 1 + (regname[1] == '.');
6382 regnum = strtoul (p, &q, 10);
6383 if (p == q || *q || regnum >= 32)
6384 return -1;
6385 if (regname[0] == 'f')
6386 regnum += 32;
6387 else if (regname[0] == 'v')
6388 regnum += 77;
6389 }
6390 else if (regname[0] == 'c' && regname[1] == 'r')
6391 {
6392 p = regname + 2 + (regname[2] == '.');
6393 if (p[0] < '0' || p[0] > '7' || p[1])
6394 return -1;
6395 regnum = p[0] - '0' + 68;
6396 }
6397 return regnum;
6398 }
GDB Binutils - Deliverables
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