source: trunk/binutils/gas/config/tc-ppc.c@ 3186

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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 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
5
6 This file is part of GAS, the GNU Assembler.
7
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
21 02111-1307, USA. */
22
23#include <stdio.h>
24#include "as.h"
25#include "safe-ctype.h"
26#include "subsegs.h"
27
28#include "opcode/ppc.h"
29
30#ifdef OBJ_ELF
31#include "elf/ppc.h"
32#include "dwarf2dbg.h"
33#endif
34
35#ifdef TE_PE
36#include "coff/pe.h"
37#endif
38
39/* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
40
41/* Tell the main code what the endianness is. */
42extern int target_big_endian;
43
44/* Whether or not, we've set target_big_endian. */
45static int set_target_endian = 0;
46
47/* Whether to use user friendly register names. */
48#ifndef TARGET_REG_NAMES_P
49#ifdef TE_PE
50#define TARGET_REG_NAMES_P TRUE
51#else
52#define TARGET_REG_NAMES_P FALSE
53#endif
54#endif
55
56/* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST,
57 HIGHESTA. */
58
59/* #lo(value) denotes the least significant 16 bits of the indicated. */
60#define PPC_LO(v) ((v) & 0xffff)
61
62/* #hi(value) denotes bits 16 through 31 of the indicated value. */
63#define PPC_HI(v) (((v) >> 16) & 0xffff)
64
65/* #ha(value) denotes the high adjusted value: bits 16 through 31 of
66 the indicated value, compensating for #lo() being treated as a
67 signed number. */
68#define PPC_HA(v) PPC_HI ((v) + 0x8000)
69
70/* #higher(value) denotes bits 32 through 47 of the indicated value. */
71#define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff)
72
73/* #highera(value) denotes bits 32 through 47 of the indicated value,
74 compensating for #lo() being treated as a signed number. */
75#define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000)
76
77/* #highest(value) denotes bits 48 through 63 of the indicated value. */
78#define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff)
79
80/* #highesta(value) denotes bits 48 through 63 of the indicated value,
81 compensating for #lo being treated as a signed number. */
82#define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000)
83
84#define SEX16(val) ((((val) & 0xffff) ^ 0x8000) - 0x8000)
85
86static bfd_boolean reg_names_p = TARGET_REG_NAMES_P;
87
88static bfd_boolean register_name PARAMS ((expressionS *));
89static void ppc_set_cpu PARAMS ((void));
90static unsigned long ppc_insert_operand
91 PARAMS ((unsigned long insn, const struct powerpc_operand *operand,
92 offsetT val, char *file, unsigned int line));
93static void ppc_macro PARAMS ((char *str, const struct powerpc_macro *macro));
94static void ppc_byte PARAMS ((int));
95
96#if defined (OBJ_XCOFF) || defined (OBJ_ELF)
97static int ppc_is_toc_sym PARAMS ((symbolS *sym));
98static void ppc_tc PARAMS ((int));
99static void ppc_machine PARAMS ((int));
100#endif
101
102#ifdef OBJ_XCOFF
103static void ppc_comm PARAMS ((int));
104static void ppc_bb PARAMS ((int));
105static void ppc_bc PARAMS ((int));
106static void ppc_bf PARAMS ((int));
107static void ppc_biei PARAMS ((int));
108static void ppc_bs PARAMS ((int));
109static void ppc_eb PARAMS ((int));
110static void ppc_ec PARAMS ((int));
111static void ppc_ef PARAMS ((int));
112static void ppc_es PARAMS ((int));
113static void ppc_csect PARAMS ((int));
114static void ppc_change_csect PARAMS ((symbolS *));
115static void ppc_function PARAMS ((int));
116static void ppc_extern PARAMS ((int));
117static void ppc_lglobl PARAMS ((int));
118static void ppc_section PARAMS ((int));
119static void ppc_named_section PARAMS ((int));
120static void ppc_stabx PARAMS ((int));
121static void ppc_rename PARAMS ((int));
122static void ppc_toc PARAMS ((int));
123static void ppc_xcoff_cons PARAMS ((int));
124static void ppc_vbyte PARAMS ((int));
125#endif
126
127#ifdef OBJ_ELF
128static bfd_reloc_code_real_type ppc_elf_suffix PARAMS ((char **, expressionS *));
129static void ppc_elf_cons PARAMS ((int));
130static void ppc_elf_rdata PARAMS ((int));
131static void ppc_elf_lcomm PARAMS ((int));
132static void ppc_elf_validate_fix PARAMS ((fixS *, segT));
133static void ppc_apuinfo_section_add PARAMS ((unsigned int apu, unsigned int version));
134#endif
135
136#ifdef TE_PE
137static void ppc_set_current_section PARAMS ((segT));
138static void ppc_previous PARAMS ((int));
139static void ppc_pdata PARAMS ((int));
140static void ppc_ydata PARAMS ((int));
141static void ppc_reldata PARAMS ((int));
142static void ppc_rdata PARAMS ((int));
143static void ppc_ualong PARAMS ((int));
144static void ppc_znop PARAMS ((int));
145static void ppc_pe_comm PARAMS ((int));
146static void ppc_pe_section PARAMS ((int));
147static void ppc_pe_function PARAMS ((int));
148static void ppc_pe_tocd PARAMS ((int));
149#endif
150
151
152/* Generic assembler global variables which must be defined by all
153 targets. */
154
155#ifdef OBJ_ELF
156/* This string holds the chars that always start a comment. If the
157 pre-processor is disabled, these aren't very useful. The macro
158 tc_comment_chars points to this. We use this, rather than the
159 usual comment_chars, so that we can switch for Solaris conventions. */
160static const char ppc_solaris_comment_chars[] = "#!";
161static const char ppc_eabi_comment_chars[] = "#";
162
163#ifdef TARGET_SOLARIS_COMMENT
164const char *ppc_comment_chars = ppc_solaris_comment_chars;
165#else
166const char *ppc_comment_chars = ppc_eabi_comment_chars;
167#endif
168#else
169const char comment_chars[] = "#";
170#endif
171
172/* Characters which start a comment at the beginning of a line. */
173const char line_comment_chars[] = "#";
174
175/* Characters which may be used to separate multiple commands on a
176 single line. */
177const char line_separator_chars[] = ";";
178
179/* Characters which are used to indicate an exponent in a floating
180 point number. */
181const char EXP_CHARS[] = "eE";
182
183/* Characters which mean that a number is a floating point constant,
184 as in 0d1.0. */
185const char FLT_CHARS[] = "dD";
186
187
188/* The target specific pseudo-ops which we support. */
189
190const pseudo_typeS md_pseudo_table[] =
191{
192 /* Pseudo-ops which must be overridden. */
193 { "byte", ppc_byte, 0 },
194
195#ifdef OBJ_XCOFF
196 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
197 legitimately belong in the obj-*.c file. However, XCOFF is based
198 on COFF, and is only implemented for the RS/6000. We just use
199 obj-coff.c, and add what we need here. */
200 { "comm", ppc_comm, 0 },
201 { "lcomm", ppc_comm, 1 },
202 { "bb", ppc_bb, 0 },
203 { "bc", ppc_bc, 0 },
204 { "bf", ppc_bf, 0 },
205 { "bi", ppc_biei, 0 },
206 { "bs", ppc_bs, 0 },
207 { "csect", ppc_csect, 0 },
208 { "data", ppc_section, 'd' },
209 { "eb", ppc_eb, 0 },
210 { "ec", ppc_ec, 0 },
211 { "ef", ppc_ef, 0 },
212 { "ei", ppc_biei, 1 },
213 { "es", ppc_es, 0 },
214 { "extern", ppc_extern, 0 },
215 { "function", ppc_function, 0 },
216 { "lglobl", ppc_lglobl, 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 { "file", (void (*) PARAMS ((int))) dwarf2_directive_file, 0 },
239 { "loc", dwarf2_directive_loc, 0 },
240#endif
241
242#ifdef TE_PE
243 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
244 { "previous", ppc_previous, 0 },
245 { "pdata", ppc_pdata, 0 },
246 { "ydata", ppc_ydata, 0 },
247 { "reldata", ppc_reldata, 0 },
248 { "rdata", ppc_rdata, 0 },
249 { "ualong", ppc_ualong, 0 },
250 { "znop", ppc_znop, 0 },
251 { "comm", ppc_pe_comm, 0 },
252 { "lcomm", ppc_pe_comm, 1 },
253 { "section", ppc_pe_section, 0 },
254 { "function", ppc_pe_function,0 },
255 { "tocd", ppc_pe_tocd, 0 },
256#endif
257
258#if defined (OBJ_XCOFF) || defined (OBJ_ELF)
259 { "tc", ppc_tc, 0 },
260 { "machine", ppc_machine, 0 },
261#endif
262
263 { NULL, NULL, 0 }
264};
265
266
267
268/* Predefined register names if -mregnames (or default for Windows NT).
269 In general, there are lots of them, in an attempt to be compatible
270 with a number of other Windows NT assemblers. */
271
272/* Structure to hold information about predefined registers. */
273struct pd_reg
274 {
275 char *name;
276 int value;
277 };
278
279/* List of registers that are pre-defined:
280
281 Each general register has predefined names of the form:
282 1. r<reg_num> which has the value <reg_num>.
283 2. r.<reg_num> which has the value <reg_num>.
284
285 Each floating point register has predefined names of the form:
286 1. f<reg_num> which has the value <reg_num>.
287 2. f.<reg_num> which has the value <reg_num>.
288
289 Each vector unit register has predefined names of the form:
290 1. v<reg_num> which has the value <reg_num>.
291 2. v.<reg_num> which has the value <reg_num>.
292
293 Each condition register has predefined names of the form:
294 1. cr<reg_num> which has the value <reg_num>.
295 2. cr.<reg_num> which has the value <reg_num>.
296
297 There are individual registers as well:
298 sp or r.sp has the value 1
299 rtoc or r.toc has the value 2
300 fpscr has the value 0
301 xer has the value 1
302 lr has the value 8
303 ctr has the value 9
304 pmr has the value 0
305 dar has the value 19
306 dsisr has the value 18
307 dec has the value 22
308 sdr1 has the value 25
309 srr0 has the value 26
310 srr1 has the value 27
311
312 The table is sorted. Suitable for searching by a binary search. */
313
314static const struct pd_reg pre_defined_registers[] =
315{
316 { "cr.0", 0 }, /* Condition Registers */
317 { "cr.1", 1 },
318 { "cr.2", 2 },
319 { "cr.3", 3 },
320 { "cr.4", 4 },
321 { "cr.5", 5 },
322 { "cr.6", 6 },
323 { "cr.7", 7 },
324
325 { "cr0", 0 },
326 { "cr1", 1 },
327 { "cr2", 2 },
328 { "cr3", 3 },
329 { "cr4", 4 },
330 { "cr5", 5 },
331 { "cr6", 6 },
332 { "cr7", 7 },
333
334 { "ctr", 9 },
335
336 { "dar", 19 }, /* Data Access Register */
337 { "dec", 22 }, /* Decrementer */
338 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
339
340 { "f.0", 0 }, /* Floating point registers */
341 { "f.1", 1 },
342 { "f.10", 10 },
343 { "f.11", 11 },
344 { "f.12", 12 },
345 { "f.13", 13 },
346 { "f.14", 14 },
347 { "f.15", 15 },
348 { "f.16", 16 },
349 { "f.17", 17 },
350 { "f.18", 18 },
351 { "f.19", 19 },
352 { "f.2", 2 },
353 { "f.20", 20 },
354 { "f.21", 21 },
355 { "f.22", 22 },
356 { "f.23", 23 },
357 { "f.24", 24 },
358 { "f.25", 25 },
359 { "f.26", 26 },
360 { "f.27", 27 },
361 { "f.28", 28 },
362 { "f.29", 29 },
363 { "f.3", 3 },
364 { "f.30", 30 },
365 { "f.31", 31 },
366 { "f.4", 4 },
367 { "f.5", 5 },
368 { "f.6", 6 },
369 { "f.7", 7 },
370 { "f.8", 8 },
371 { "f.9", 9 },
372
373 { "f0", 0 },
374 { "f1", 1 },
375 { "f10", 10 },
376 { "f11", 11 },
377 { "f12", 12 },
378 { "f13", 13 },
379 { "f14", 14 },
380 { "f15", 15 },
381 { "f16", 16 },
382 { "f17", 17 },
383 { "f18", 18 },
384 { "f19", 19 },
385 { "f2", 2 },
386 { "f20", 20 },
387 { "f21", 21 },
388 { "f22", 22 },
389 { "f23", 23 },
390 { "f24", 24 },
391 { "f25", 25 },
392 { "f26", 26 },
393 { "f27", 27 },
394 { "f28", 28 },
395 { "f29", 29 },
396 { "f3", 3 },
397 { "f30", 30 },
398 { "f31", 31 },
399 { "f4", 4 },
400 { "f5", 5 },
401 { "f6", 6 },
402 { "f7", 7 },
403 { "f8", 8 },
404 { "f9", 9 },
405
406 { "fpscr", 0 },
407
408 { "lr", 8 }, /* Link Register */
409
410 { "pmr", 0 },
411
412 { "r.0", 0 }, /* General Purpose Registers */
413 { "r.1", 1 },
414 { "r.10", 10 },
415 { "r.11", 11 },
416 { "r.12", 12 },
417 { "r.13", 13 },
418 { "r.14", 14 },
419 { "r.15", 15 },
420 { "r.16", 16 },
421 { "r.17", 17 },
422 { "r.18", 18 },
423 { "r.19", 19 },
424 { "r.2", 2 },
425 { "r.20", 20 },
426 { "r.21", 21 },
427 { "r.22", 22 },
428 { "r.23", 23 },
429 { "r.24", 24 },
430 { "r.25", 25 },
431 { "r.26", 26 },
432 { "r.27", 27 },
433 { "r.28", 28 },
434 { "r.29", 29 },
435 { "r.3", 3 },
436 { "r.30", 30 },
437 { "r.31", 31 },
438 { "r.4", 4 },
439 { "r.5", 5 },
440 { "r.6", 6 },
441 { "r.7", 7 },
442 { "r.8", 8 },
443 { "r.9", 9 },
444
445 { "r.sp", 1 }, /* Stack Pointer */
446
447 { "r.toc", 2 }, /* Pointer to the table of contents */
448
449 { "r0", 0 }, /* More general purpose registers */
450 { "r1", 1 },
451 { "r10", 10 },
452 { "r11", 11 },
453 { "r12", 12 },
454 { "r13", 13 },
455 { "r14", 14 },
456 { "r15", 15 },
457 { "r16", 16 },
458 { "r17", 17 },
459 { "r18", 18 },
460 { "r19", 19 },
461 { "r2", 2 },
462 { "r20", 20 },
463 { "r21", 21 },
464 { "r22", 22 },
465 { "r23", 23 },
466 { "r24", 24 },
467 { "r25", 25 },
468 { "r26", 26 },
469 { "r27", 27 },
470 { "r28", 28 },
471 { "r29", 29 },
472 { "r3", 3 },
473 { "r30", 30 },
474 { "r31", 31 },
475 { "r4", 4 },
476 { "r5", 5 },
477 { "r6", 6 },
478 { "r7", 7 },
479 { "r8", 8 },
480 { "r9", 9 },
481
482 { "rtoc", 2 }, /* Table of contents */
483
484 { "sdr1", 25 }, /* Storage Description Register 1 */
485
486 { "sp", 1 },
487
488 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
489 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
490
491 { "v.0", 0 }, /* Vector registers */
492 { "v.1", 1 },
493 { "v.10", 10 },
494 { "v.11", 11 },
495 { "v.12", 12 },
496 { "v.13", 13 },
497 { "v.14", 14 },
498 { "v.15", 15 },
499 { "v.16", 16 },
500 { "v.17", 17 },
501 { "v.18", 18 },
502 { "v.19", 19 },
503 { "v.2", 2 },
504 { "v.20", 20 },
505 { "v.21", 21 },
506 { "v.22", 22 },
507 { "v.23", 23 },
508 { "v.24", 24 },
509 { "v.25", 25 },
510 { "v.26", 26 },
511 { "v.27", 27 },
512 { "v.28", 28 },
513 { "v.29", 29 },
514 { "v.3", 3 },
515 { "v.30", 30 },
516 { "v.31", 31 },
517 { "v.4", 4 },
518 { "v.5", 5 },
519 { "v.6", 6 },
520 { "v.7", 7 },
521 { "v.8", 8 },
522 { "v.9", 9 },
523
524 { "v0", 0 },
525 { "v1", 1 },
526 { "v10", 10 },
527 { "v11", 11 },
528 { "v12", 12 },
529 { "v13", 13 },
530 { "v14", 14 },
531 { "v15", 15 },
532 { "v16", 16 },
533 { "v17", 17 },
534 { "v18", 18 },
535 { "v19", 19 },
536 { "v2", 2 },
537 { "v20", 20 },
538 { "v21", 21 },
539 { "v22", 22 },
540 { "v23", 23 },
541 { "v24", 24 },
542 { "v25", 25 },
543 { "v26", 26 },
544 { "v27", 27 },
545 { "v28", 28 },
546 { "v29", 29 },
547 { "v3", 3 },
548 { "v30", 30 },
549 { "v31", 31 },
550 { "v4", 4 },
551 { "v5", 5 },
552 { "v6", 6 },
553 { "v7", 7 },
554 { "v8", 8 },
555 { "v9", 9 },
556
557 { "xer", 1 },
558
559};
560
561#define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
562
563/* Given NAME, find the register number associated with that name, return
564 the integer value associated with the given name or -1 on failure. */
565
566static int reg_name_search
567 PARAMS ((const struct pd_reg *, int, const char * name));
568
569static int
570reg_name_search (regs, regcount, name)
571 const struct pd_reg *regs;
572 int regcount;
573 const char *name;
574{
575 int middle, low, high;
576 int cmp;
577
578 low = 0;
579 high = regcount - 1;
580
581 do
582 {
583 middle = (low + high) / 2;
584 cmp = strcasecmp (name, regs[middle].name);
585 if (cmp < 0)
586 high = middle - 1;
587 else if (cmp > 0)
588 low = middle + 1;
589 else
590 return regs[middle].value;
591 }
592 while (low <= high);
593
594 return -1;
595}
596
597/*
598 * Summary of register_name.
599 *
600 * in: Input_line_pointer points to 1st char of operand.
601 *
602 * out: A expressionS.
603 * The operand may have been a register: in this case, X_op == O_register,
604 * X_add_number is set to the register number, and truth is returned.
605 * Input_line_pointer->(next non-blank) char after operand, or is in its
606 * original state.
607 */
608
609static bfd_boolean
610register_name (expressionP)
611 expressionS *expressionP;
612{
613 int reg_number;
614 char *name;
615 char *start;
616 char c;
617
618 /* Find the spelling of the operand. */
619 start = name = input_line_pointer;
620 if (name[0] == '%' && ISALPHA (name[1]))
621 name = ++input_line_pointer;
622
623 else if (!reg_names_p || !ISALPHA (name[0]))
624 return FALSE;
625
626 c = get_symbol_end ();
627 reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name);
628
629 /* Put back the delimiting char. */
630 *input_line_pointer = c;
631
632 /* Look to see if it's in the register table. */
633 if (reg_number >= 0)
634 {
635 expressionP->X_op = O_register;
636 expressionP->X_add_number = reg_number;
637
638 /* Make the rest nice. */
639 expressionP->X_add_symbol = NULL;
640 expressionP->X_op_symbol = NULL;
641 return TRUE;
642 }
643
644 /* Reset the line as if we had not done anything. */
645 input_line_pointer = start;
646 return FALSE;
647}
648
649
650/* This function is called for each symbol seen in an expression. It
651 handles the special parsing which PowerPC assemblers are supposed
652 to use for condition codes. */
653
654/* Whether to do the special parsing. */
655static bfd_boolean cr_operand;
656
657/* Names to recognize in a condition code. This table is sorted. */
658static const struct pd_reg cr_names[] =
659{
660 { "cr0", 0 },
661 { "cr1", 1 },
662 { "cr2", 2 },
663 { "cr3", 3 },
664 { "cr4", 4 },
665 { "cr5", 5 },
666 { "cr6", 6 },
667 { "cr7", 7 },
668 { "eq", 2 },
669 { "gt", 1 },
670 { "lt", 0 },
671 { "so", 3 },
672 { "un", 3 }
673};
674
675/* Parsing function. This returns non-zero if it recognized an
676 expression. */
677
678int
679ppc_parse_name (name, expr)
680 const char *name;
681 expressionS *expr;
682{
683 int val;
684
685 if (! cr_operand)
686 return 0;
687
688 val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0],
689 name);
690 if (val < 0)
691 return 0;
692
693 expr->X_op = O_constant;
694 expr->X_add_number = val;
695
696 return 1;
697}
698
699
700/* Local variables. */
701
702/* The type of processor we are assembling for. This is one or more
703 of the PPC_OPCODE flags defined in opcode/ppc.h. */
704static unsigned long ppc_cpu = 0;
705
706/* Whether to target xcoff64/elf64. */
707static unsigned int ppc_obj64 = BFD_DEFAULT_TARGET_SIZE == 64;
708
709/* Opcode hash table. */
710static struct hash_control *ppc_hash;
711
712/* Macro hash table. */
713static struct hash_control *ppc_macro_hash;
714
715#ifdef OBJ_ELF
716/* What type of shared library support to use. */
717static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE;
718
719/* Flags to set in the elf header. */
720static flagword ppc_flags = 0;
721
722/* Whether this is Solaris or not. */
723#ifdef TARGET_SOLARIS_COMMENT
724#define SOLARIS_P TRUE
725#else
726#define SOLARIS_P FALSE
727#endif
728
729static bfd_boolean msolaris = SOLARIS_P;
730#endif
731
732#ifdef OBJ_XCOFF
733
734/* The RS/6000 assembler uses the .csect pseudo-op to generate code
735 using a bunch of different sections. These assembler sections,
736 however, are all encompassed within the .text or .data sections of
737 the final output file. We handle this by using different
738 subsegments within these main segments. */
739
740/* Next subsegment to allocate within the .text segment. */
741static subsegT ppc_text_subsegment = 2;
742
743/* Linked list of csects in the text section. */
744static symbolS *ppc_text_csects;
745
746/* Next subsegment to allocate within the .data segment. */
747static subsegT ppc_data_subsegment = 2;
748
749/* Linked list of csects in the data section. */
750static symbolS *ppc_data_csects;
751
752/* The current csect. */
753static symbolS *ppc_current_csect;
754
755/* The RS/6000 assembler uses a TOC which holds addresses of functions
756 and variables. Symbols are put in the TOC with the .tc pseudo-op.
757 A special relocation is used when accessing TOC entries. We handle
758 the TOC as a subsegment within the .data segment. We set it up if
759 we see a .toc pseudo-op, and save the csect symbol here. */
760static symbolS *ppc_toc_csect;
761
762/* The first frag in the TOC subsegment. */
763static fragS *ppc_toc_frag;
764
765/* The first frag in the first subsegment after the TOC in the .data
766 segment. NULL if there are no subsegments after the TOC. */
767static fragS *ppc_after_toc_frag;
768
769/* The current static block. */
770static symbolS *ppc_current_block;
771
772/* The COFF debugging section; set by md_begin. This is not the
773 .debug section, but is instead the secret BFD section which will
774 cause BFD to set the section number of a symbol to N_DEBUG. */
775static asection *ppc_coff_debug_section;
776
777#endif /* OBJ_XCOFF */
778
779#ifdef TE_PE
780
781/* Various sections that we need for PE coff support. */
782static segT ydata_section;
783static segT pdata_section;
784static segT reldata_section;
785static segT rdata_section;
786static segT tocdata_section;
787
788/* The current section and the previous section. See ppc_previous. */
789static segT ppc_previous_section;
790static segT ppc_current_section;
791
792#endif /* TE_PE */
793
794#ifdef OBJ_ELF
795symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
796#define PPC_APUINFO_ISEL 0x40
797#define PPC_APUINFO_PMR 0x41
798#define PPC_APUINFO_RFMCI 0x42
799#define PPC_APUINFO_CACHELCK 0x43
800#define PPC_APUINFO_SPE 0x100
801#define PPC_APUINFO_EFS 0x101
802#define PPC_APUINFO_BRLOCK 0x102
803
804/*
805 * We keep a list of APUinfo
806 */
807unsigned long *ppc_apuinfo_list;
808unsigned int ppc_apuinfo_num;
809unsigned int ppc_apuinfo_num_alloc;
810#endif /* OBJ_ELF */
811
812
813#ifdef OBJ_ELF
814const char *const md_shortopts = "b:l:usm:K:VQ:";
815#else
816const char *const md_shortopts = "um:";
817#endif
818const struct option md_longopts[] = {
819 {NULL, no_argument, NULL, 0}
820};
821const size_t md_longopts_size = sizeof (md_longopts);
822
823int
824md_parse_option (c, arg)
825 int c;
826 char *arg;
827{
828 switch (c)
829 {
830 case 'u':
831 /* -u means that any undefined symbols should be treated as
832 external, which is the default for gas anyhow. */
833 break;
834
835#ifdef OBJ_ELF
836 case 'l':
837 /* Solaris as takes -le (presumably for little endian). For completeness
838 sake, recognize -be also. */
839 if (strcmp (arg, "e") == 0)
840 {
841 target_big_endian = 0;
842 set_target_endian = 1;
843 }
844 else
845 return 0;
846
847 break;
848
849 case 'b':
850 if (strcmp (arg, "e") == 0)
851 {
852 target_big_endian = 1;
853 set_target_endian = 1;
854 }
855 else
856 return 0;
857
858 break;
859
860 case 'K':
861 /* Recognize -K PIC. */
862 if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0)
863 {
864 shlib = SHLIB_PIC;
865 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
866 }
867 else
868 return 0;
869
870 break;
871#endif
872
873 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
874 case 'a':
875 if (strcmp (arg, "64") == 0)
876 {
877#ifdef BFD64
878 ppc_obj64 = 1;
879#else
880 as_fatal (_("%s unsupported"), "-a64");
881#endif
882 }
883 else if (strcmp (arg, "32") == 0)
884 ppc_obj64 = 0;
885 else
886 return 0;
887 break;
888
889 case 'm':
890 /* -mpwrx and -mpwr2 mean to assemble for the IBM POWER/2
891 (RIOS2). */
892 if (strcmp (arg, "pwrx") == 0 || strcmp (arg, "pwr2") == 0)
893 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_POWER2 | PPC_OPCODE_32;
894 /* -mpwr means to assemble for the IBM POWER (RIOS1). */
895 else if (strcmp (arg, "pwr") == 0)
896 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_32;
897 /* -m601 means to assemble for the PowerPC 601, which includes
898 instructions that are holdovers from the Power. */
899 else if (strcmp (arg, "601") == 0)
900 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
901 | PPC_OPCODE_601 | PPC_OPCODE_32);
902 /* -mppc, -mppc32, -m603, and -m604 mean to assemble for the
903 PowerPC 603/604. */
904 else if (strcmp (arg, "ppc") == 0
905 || strcmp (arg, "ppc32") == 0
906 || strcmp (arg, "603") == 0
907 || strcmp (arg, "604") == 0)
908 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32;
909 /* -m403 and -m405 mean to assemble for the PowerPC 403/405. */
910 else if (strcmp (arg, "403") == 0
911 || strcmp (arg, "405") == 0)
912 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
913 | PPC_OPCODE_403 | PPC_OPCODE_32);
914 else if (strcmp (arg, "7400") == 0
915 || strcmp (arg, "7410") == 0
916 || strcmp (arg, "7450") == 0
917 || strcmp (arg, "7455") == 0)
918 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
919 | PPC_OPCODE_ALTIVEC | PPC_OPCODE_32);
920 else if (strcmp (arg, "altivec") == 0)
921 {
922 if (ppc_cpu == 0)
923 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_ALTIVEC;
924 else
925 ppc_cpu |= PPC_OPCODE_ALTIVEC;
926 }
927 else if (strcmp (arg, "e500") == 0 || strcmp (arg, "e500x2") == 0)
928 {
929 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_SPE
930 | PPC_OPCODE_ISEL | PPC_OPCODE_EFS | PPC_OPCODE_BRLOCK
931 | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK
932 | PPC_OPCODE_RFMCI);
933 }
934 else if (strcmp (arg, "spe") == 0)
935 {
936 if (ppc_cpu == 0)
937 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_SPE | PPC_OPCODE_EFS;
938 else
939 ppc_cpu |= PPC_OPCODE_SPE;
940 }
941 /* -mppc64 and -m620 mean to assemble for the 64-bit PowerPC
942 620. */
943 else if (strcmp (arg, "ppc64") == 0 || strcmp (arg, "620") == 0)
944 {
945 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64;
946 }
947 else if (strcmp (arg, "ppc64bridge") == 0)
948 {
949 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
950 | PPC_OPCODE_64_BRIDGE | PPC_OPCODE_64);
951 }
952 /* -mbooke/-mbooke32 mean enable 32-bit BookE support. */
953 else if (strcmp (arg, "booke") == 0 || strcmp (arg, "booke32") == 0)
954 {
955 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_BOOKE | PPC_OPCODE_32;
956 }
957 /* -mbooke64 means enable 64-bit BookE support. */
958 else if (strcmp (arg, "booke64") == 0)
959 {
960 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_BOOKE
961 | PPC_OPCODE_BOOKE64 | PPC_OPCODE_64);
962 }
963 else if (strcmp (arg, "power4") == 0)
964 {
965 ppc_cpu = (PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC
966 | PPC_OPCODE_64 | PPC_OPCODE_POWER4);
967 }
968 /* -mcom means assemble for the common intersection between Power
969 and PowerPC. At present, we just allow the union, rather
970 than the intersection. */
971 else if (strcmp (arg, "com") == 0)
972 ppc_cpu = PPC_OPCODE_COMMON | PPC_OPCODE_32;
973 /* -many means to assemble for any architecture (PWR/PWRX/PPC). */
974 else if (strcmp (arg, "any") == 0)
975 ppc_cpu = PPC_OPCODE_ANY | PPC_OPCODE_32;
976
977 else if (strcmp (arg, "regnames") == 0)
978 reg_names_p = TRUE;
979
980 else if (strcmp (arg, "no-regnames") == 0)
981 reg_names_p = FALSE;
982
983#ifdef OBJ_ELF
984 /* -mrelocatable/-mrelocatable-lib -- warn about initializations
985 that require relocation. */
986 else if (strcmp (arg, "relocatable") == 0)
987 {
988 shlib = SHLIB_MRELOCATABLE;
989 ppc_flags |= EF_PPC_RELOCATABLE;
990 }
991
992 else if (strcmp (arg, "relocatable-lib") == 0)
993 {
994 shlib = SHLIB_MRELOCATABLE;
995 ppc_flags |= EF_PPC_RELOCATABLE_LIB;
996 }
997
998 /* -memb, set embedded bit. */
999 else if (strcmp (arg, "emb") == 0)
1000 ppc_flags |= EF_PPC_EMB;
1001
1002 /* -mlittle/-mbig set the endianess. */
1003 else if (strcmp (arg, "little") == 0
1004 || strcmp (arg, "little-endian") == 0)
1005 {
1006 target_big_endian = 0;
1007 set_target_endian = 1;
1008 }
1009
1010 else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0)
1011 {
1012 target_big_endian = 1;
1013 set_target_endian = 1;
1014 }
1015
1016 else if (strcmp (arg, "solaris") == 0)
1017 {
1018 msolaris = TRUE;
1019 ppc_comment_chars = ppc_solaris_comment_chars;
1020 }
1021
1022 else if (strcmp (arg, "no-solaris") == 0)
1023 {
1024 msolaris = FALSE;
1025 ppc_comment_chars = ppc_eabi_comment_chars;
1026 }
1027#endif
1028 else
1029 {
1030 as_bad (_("invalid switch -m%s"), arg);
1031 return 0;
1032 }
1033 break;
1034
1035#ifdef OBJ_ELF
1036 /* -V: SVR4 argument to print version ID. */
1037 case 'V':
1038 print_version_id ();
1039 break;
1040
1041 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
1042 should be emitted or not. FIXME: Not implemented. */
1043 case 'Q':
1044 break;
1045
1046 /* Solaris takes -s to specify that .stabs go in a .stabs section,
1047 rather than .stabs.excl, which is ignored by the linker.
1048 FIXME: Not implemented. */
1049 case 's':
1050 if (arg)
1051 return 0;
1052
1053 break;
1054#endif
1055
1056 default:
1057 return 0;
1058 }
1059
1060 return 1;
1061}
1062
1063void
1064md_show_usage (stream)
1065 FILE *stream;
1066{
1067 fprintf (stream, _("\
1068PowerPC options:\n\
1069-u ignored\n\
1070-mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\
1071-mpwr generate code for POWER (RIOS1)\n\
1072-m601 generate code for PowerPC 601\n\
1073-mppc, -mppc32, -m603, -m604\n\
1074 generate code for PowerPC 603/604\n\
1075-m403, -m405 generate code for PowerPC 403/405\n\
1076-m7400, -m7410, -m7450, -m7455\n\
1077 generate code For PowerPC 7400/7410/7450/7455\n\
1078-mppc64, -m620 generate code for PowerPC 620/625/630\n\
1079-mppc64bridge generate code for PowerPC 64, including bridge insns\n\
1080-mbooke64 generate code for 64-bit PowerPC BookE\n\
1081-mbooke, mbooke32 generate code for 32-bit PowerPC BookE\n\
1082-mpower4 generate code for Power4 architecture\n\
1083-maltivec generate code for AltiVec\n\
1084-mcom generate code Power/PowerPC common instructions\n\
1085-many generate code for any architecture (PWR/PWRX/PPC)\n\
1086-mregnames Allow symbolic names for registers\n\
1087-mno-regnames Do not allow symbolic names for registers\n"));
1088 fprintf (stream, _("\
1089-me500, -me500x2 generate code for Motorola e500 core complex\n\
1090-mspe generate code for Motorola SPE instructions\n"));
1091#ifdef OBJ_ELF
1092 fprintf (stream, _("\
1093-mrelocatable support for GCC's -mrelocatble option\n\
1094-mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
1095-memb set PPC_EMB bit in ELF flags\n\
1096-mlittle, -mlittle-endian\n\
1097 generate code for a little endian machine\n\
1098-mbig, -mbig-endian generate code for a big endian machine\n\
1099-msolaris generate code for Solaris\n\
1100-mno-solaris do not generate code for Solaris\n\
1101-V print assembler version number\n\
1102-Qy, -Qn ignored\n"));
1103#endif
1104}
1105
1106
1107/* Set ppc_cpu if it is not already set. */
1108
1109static void
1110ppc_set_cpu ()
1111{
1112 const char *default_os = TARGET_OS;
1113 const char *default_cpu = TARGET_CPU;
1114
1115 if (ppc_cpu == 0)
1116 {
1117 if (ppc_obj64)
1118 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64;
1119 else if (strncmp (default_os, "aix", 3) == 0
1120 && default_os[3] >= '4' && default_os[3] <= '9')
1121 ppc_cpu = PPC_OPCODE_COMMON | PPC_OPCODE_32;
1122 else if (strncmp (default_os, "aix3", 4) == 0)
1123 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_32;
1124 else if (strcmp (default_cpu, "rs6000") == 0)
1125 ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_32;
1126 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1127 {
1128 if (default_cpu[7] == '6' && default_cpu[8] == '4')
1129 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_64;
1130 else
1131 ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_CLASSIC | PPC_OPCODE_32;
1132 }
1133 else
1134 as_fatal (_("Unknown default cpu = %s, os = %s"),
1135 default_cpu, default_os);
1136 }
1137}
1138
1139/* Figure out the BFD architecture to use. */
1140
1141enum bfd_architecture
1142ppc_arch ()
1143{
1144 const char *default_cpu = TARGET_CPU;
1145 ppc_set_cpu ();
1146
1147 if ((ppc_cpu & PPC_OPCODE_PPC) != 0)
1148 return bfd_arch_powerpc;
1149 else if ((ppc_cpu & PPC_OPCODE_POWER) != 0)
1150 return bfd_arch_rs6000;
1151 else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0)
1152 {
1153 if (strcmp (default_cpu, "rs6000") == 0)
1154 return bfd_arch_rs6000;
1155 else if (strncmp (default_cpu, "powerpc", 7) == 0)
1156 return bfd_arch_powerpc;
1157 }
1158
1159 as_fatal (_("Neither Power nor PowerPC opcodes were selected."));
1160 return bfd_arch_unknown;
1161}
1162
1163unsigned long
1164ppc_mach ()
1165{
1166 if (ppc_obj64)
1167 return bfd_mach_ppc64;
1168 else if (ppc_arch () == bfd_arch_rs6000)
1169 return bfd_mach_rs6k;
1170 else
1171 return bfd_mach_ppc;
1172}
1173
1174extern char*
1175ppc_target_format ()
1176{
1177#ifdef OBJ_COFF
1178#ifdef TE_PE
1179 return target_big_endian ? "pe-powerpc" : "pe-powerpcle";
1180#elif TE_POWERMAC
1181 return "xcoff-powermac";
1182#else
1183# ifdef TE_AIX5
1184 return (ppc_obj64 ? "aix5coff64-rs6000" : "aixcoff-rs6000");
1185# else
1186 return (ppc_obj64 ? "aixcoff64-rs6000" : "aixcoff-rs6000");
1187# endif
1188#endif
1189#endif
1190#ifdef OBJ_ELF
1191 return (target_big_endian
1192 ? (ppc_obj64 ? "elf64-powerpc" : "elf32-powerpc")
1193 : (ppc_obj64 ? "elf64-powerpcle" : "elf32-powerpcle"));
1194#endif
1195}
1196
1197/* This function is called when the assembler starts up. It is called
1198 after the options have been parsed and the output file has been
1199 opened. */
1200
1201void
1202md_begin ()
1203{
1204 register const struct powerpc_opcode *op;
1205 const struct powerpc_opcode *op_end;
1206 const struct powerpc_macro *macro;
1207 const struct powerpc_macro *macro_end;
1208 bfd_boolean dup_insn = FALSE;
1209
1210 ppc_set_cpu ();
1211
1212#ifdef OBJ_ELF
1213 /* Set the ELF flags if desired. */
1214 if (ppc_flags && !msolaris)
1215 bfd_set_private_flags (stdoutput, ppc_flags);
1216#endif
1217
1218 /* Insert the opcodes into a hash table. */
1219 ppc_hash = hash_new ();
1220
1221 op_end = powerpc_opcodes + powerpc_num_opcodes;
1222 for (op = powerpc_opcodes; op < op_end; op++)
1223 {
1224 know ((op->opcode & op->mask) == op->opcode);
1225
1226 if ((op->flags & ppc_cpu & ~(PPC_OPCODE_32 | PPC_OPCODE_64)) != 0
1227 && ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0
1228 || ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64))
1229 == (ppc_cpu & (PPC_OPCODE_32 | PPC_OPCODE_64)))
1230 || (ppc_cpu & PPC_OPCODE_64_BRIDGE) != 0)
1231 /* Certain instructions (eg: extsw) do not exist in the
1232 32-bit BookE instruction set, but they do exist in the
1233 64-bit BookE instruction set, and other PPC instruction
1234 sets. Check to see if the opcode has the BOOKE64 flag set.
1235 If it does make sure that the target CPU is not the BookE32. */
1236 && ((op->flags & PPC_OPCODE_BOOKE64) == 0
1237 || (ppc_cpu & PPC_OPCODE_BOOKE64) == PPC_OPCODE_BOOKE64
1238 || (ppc_cpu & PPC_OPCODE_BOOKE) == 0)
1239 && ((op->flags & (PPC_OPCODE_POWER4 | PPC_OPCODE_NOPOWER4)) == 0
1240 || ((op->flags & PPC_OPCODE_POWER4)
1241 == (ppc_cpu & PPC_OPCODE_POWER4))))
1242 {
1243 const char *retval;
1244
1245 retval = hash_insert (ppc_hash, op->name, (PTR) op);
1246 if (retval != (const char *) NULL)
1247 {
1248 /* Ignore Power duplicates for -m601. */
1249 if ((ppc_cpu & PPC_OPCODE_601) != 0
1250 && (op->flags & PPC_OPCODE_POWER) != 0)
1251 continue;
1252
1253 as_bad (_("Internal assembler error for instruction %s"),
1254 op->name);
1255 dup_insn = TRUE;
1256 }
1257 }
1258 }
1259
1260 /* Insert the macros into a hash table. */
1261 ppc_macro_hash = hash_new ();
1262
1263 macro_end = powerpc_macros + powerpc_num_macros;
1264 for (macro = powerpc_macros; macro < macro_end; macro++)
1265 {
1266 if ((macro->flags & ppc_cpu) != 0)
1267 {
1268 const char *retval;
1269
1270 retval = hash_insert (ppc_macro_hash, macro->name, (PTR) macro);
1271 if (retval != (const char *) NULL)
1272 {
1273 as_bad (_("Internal assembler error for macro %s"), macro->name);
1274 dup_insn = TRUE;
1275 }
1276 }
1277 }
1278
1279 if (dup_insn)
1280 abort ();
1281
1282 /* Tell the main code what the endianness is if it is not overidden
1283 by the user. */
1284 if (!set_target_endian)
1285 {
1286 set_target_endian = 1;
1287 target_big_endian = PPC_BIG_ENDIAN;
1288 }
1289
1290#ifdef OBJ_XCOFF
1291 ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG);
1292
1293 /* Create dummy symbols to serve as initial csects. This forces the
1294 text csects to precede the data csects. These symbols will not
1295 be output. */
1296 ppc_text_csects = symbol_make ("dummy\001");
1297 symbol_get_tc (ppc_text_csects)->within = ppc_text_csects;
1298 ppc_data_csects = symbol_make ("dummy\001");
1299 symbol_get_tc (ppc_data_csects)->within = ppc_data_csects;
1300#endif
1301
1302#ifdef TE_PE
1303
1304 ppc_current_section = text_section;
1305 ppc_previous_section = 0;
1306
1307#endif
1308}
1309
1310void
1311ppc_cleanup ()
1312{
1313#ifdef OBJ_ELF
1314 if (ppc_apuinfo_list == NULL)
1315 return;
1316
1317 /* Ok, so write the section info out. We have this layout:
1318
1319 byte data what
1320 ---- ---- ----
1321 0 8 length of "APUinfo\0"
1322 4 (n*4) number of APU's (4 bytes each)
1323 8 2 note type 2
1324 12 "APUinfo\0" name
1325 20 APU#1 first APU's info
1326 24 APU#2 second APU's info
1327 ... ...
1328 */
1329 {
1330 char *p;
1331 asection *seg = now_seg;
1332 subsegT subseg = now_subseg;
1333 asection *apuinfo_secp = (asection *) NULL;
1334 unsigned int i;
1335
1336 /* Create the .PPC.EMB.apuinfo section. */
1337 apuinfo_secp = subseg_new (".PPC.EMB.apuinfo", 0);
1338 bfd_set_section_flags (stdoutput,
1339 apuinfo_secp,
1340 SEC_HAS_CONTENTS | SEC_READONLY);
1341
1342 p = frag_more (4);
1343 md_number_to_chars (p, (valueT) 8, 4);
1344
1345 p = frag_more (4);
1346 md_number_to_chars (p, (valueT) ppc_apuinfo_num, 4);
1347
1348 p = frag_more (4);
1349 md_number_to_chars (p, (valueT) 2, 4);
1350
1351 p = frag_more (8);
1352 strcpy (p, "APUinfo");
1353
1354 for (i = 0; i < ppc_apuinfo_num; i++)
1355 {
1356 p = frag_more (4);
1357 md_number_to_chars (p, (valueT) ppc_apuinfo_list[i], 4);
1358 }
1359
1360 frag_align (2, 0, 0);
1361
1362 /* We probably can't restore the current segment, for there likely
1363 isn't one yet... */
1364 if (seg && subseg)
1365 subseg_set (seg, subseg);
1366 }
1367#endif
1368}
1369
1370/* Insert an operand value into an instruction. */
1371
1372static unsigned long
1373ppc_insert_operand (insn, operand, val, file, line)
1374 unsigned long insn;
1375 const struct powerpc_operand *operand;
1376 offsetT val;
1377 char *file;
1378 unsigned int line;
1379{
1380 if (operand->bits != 32)
1381 {
1382 long min, max;
1383 offsetT test;
1384
1385 if ((operand->flags & PPC_OPERAND_SIGNED) != 0)
1386 {
1387 if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0)
1388 max = (1 << operand->bits) - 1;
1389 else
1390 max = (1 << (operand->bits - 1)) - 1;
1391 min = - (1 << (operand->bits - 1));
1392
1393 if (!ppc_obj64)
1394 {
1395 /* Some people write 32 bit hex constants with the sign
1396 extension done by hand. This shouldn't really be
1397 valid, but, to permit this code to assemble on a 64
1398 bit host, we sign extend the 32 bit value. */
1399 if (val > 0
1400 && (val & (offsetT) 0x80000000) != 0
1401 && (val & (offsetT) 0xffffffff) == val)
1402 {
1403 val -= 0x80000000;
1404 val -= 0x80000000;
1405 }
1406 }
1407 }
1408 else
1409 {
1410 max = (1 << operand->bits) - 1;
1411 min = 0;
1412 }
1413
1414 if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0)
1415 test = - val;
1416 else
1417 test = val;
1418
1419 if (test < (offsetT) min || test > (offsetT) max)
1420 {
1421 const char *err =
1422 _("operand out of range (%s not between %ld and %ld)");
1423 char buf[100];
1424
1425 sprint_value (buf, test);
1426 as_bad_where (file, line, err, buf, min, max);
1427 }
1428 }
1429
1430 if (operand->insert)
1431 {
1432 const char *errmsg;
1433
1434 errmsg = NULL;
1435 insn = (*operand->insert) (insn, (long) val, ppc_cpu, &errmsg);
1436 if (errmsg != (const char *) NULL)
1437 as_bad_where (file, line, errmsg);
1438 }
1439 else
1440 insn |= (((long) val & ((1 << operand->bits) - 1))
1441 << operand->shift);
1442
1443 return insn;
1444}
1445
1446
1447
1448#ifdef OBJ_ELF
1449/* Parse @got, etc. and return the desired relocation. */
1450static bfd_reloc_code_real_type
1451ppc_elf_suffix (str_p, exp_p)
1452 char **str_p;
1453 expressionS *exp_p;
1454{
1455 struct map_bfd {
1456 char *string;
1457 int length;
1458 int reloc;
1459 };
1460
1461 char ident[20];
1462 char *str = *str_p;
1463 char *str2;
1464 int ch;
1465 int len;
1466 const struct map_bfd *ptr;
1467
1468#define MAP(str,reloc) { str, sizeof (str)-1, reloc }
1469
1470 static const struct map_bfd mapping[] = {
1471 MAP ("l", (int) BFD_RELOC_LO16),
1472 MAP ("h", (int) BFD_RELOC_HI16),
1473 MAP ("ha", (int) BFD_RELOC_HI16_S),
1474 MAP ("brtaken", (int) BFD_RELOC_PPC_B16_BRTAKEN),
1475 MAP ("brntaken", (int) BFD_RELOC_PPC_B16_BRNTAKEN),
1476 MAP ("got", (int) BFD_RELOC_16_GOTOFF),
1477 MAP ("got@l", (int) BFD_RELOC_LO16_GOTOFF),
1478 MAP ("got@h", (int) BFD_RELOC_HI16_GOTOFF),
1479 MAP ("got@ha", (int) BFD_RELOC_HI16_S_GOTOFF),
1480 MAP ("fixup", (int) BFD_RELOC_CTOR),
1481 MAP ("plt", (int) BFD_RELOC_24_PLT_PCREL),
1482 MAP ("pltrel24", (int) BFD_RELOC_24_PLT_PCREL),
1483 MAP ("copy", (int) BFD_RELOC_PPC_COPY),
1484 MAP ("globdat", (int) BFD_RELOC_PPC_GLOB_DAT),
1485 MAP ("local24pc", (int) BFD_RELOC_PPC_LOCAL24PC),
1486 MAP ("local", (int) BFD_RELOC_PPC_LOCAL24PC),
1487 MAP ("pltrel", (int) BFD_RELOC_32_PLT_PCREL),
1488 MAP ("plt@l", (int) BFD_RELOC_LO16_PLTOFF),
1489 MAP ("plt@h", (int) BFD_RELOC_HI16_PLTOFF),
1490 MAP ("plt@ha", (int) BFD_RELOC_HI16_S_PLTOFF),
1491 MAP ("sdarel", (int) BFD_RELOC_GPREL16),
1492 MAP ("sectoff", (int) BFD_RELOC_16_BASEREL),
1493 MAP ("sectoff@l", (int) BFD_RELOC_LO16_BASEREL),
1494 MAP ("sectoff@h", (int) BFD_RELOC_HI16_BASEREL),
1495 MAP ("sectoff@ha", (int) BFD_RELOC_HI16_S_BASEREL),
1496 MAP ("naddr", (int) BFD_RELOC_PPC_EMB_NADDR32),
1497 MAP ("naddr16", (int) BFD_RELOC_PPC_EMB_NADDR16),
1498 MAP ("naddr@l", (int) BFD_RELOC_PPC_EMB_NADDR16_LO),
1499 MAP ("naddr@h", (int) BFD_RELOC_PPC_EMB_NADDR16_HI),
1500 MAP ("naddr@ha", (int) BFD_RELOC_PPC_EMB_NADDR16_HA),
1501 MAP ("sdai16", (int) BFD_RELOC_PPC_EMB_SDAI16),
1502 MAP ("sda2rel", (int) BFD_RELOC_PPC_EMB_SDA2REL),
1503 MAP ("sda2i16", (int) BFD_RELOC_PPC_EMB_SDA2I16),
1504 MAP ("sda21", (int) BFD_RELOC_PPC_EMB_SDA21),
1505 MAP ("mrkref", (int) BFD_RELOC_PPC_EMB_MRKREF),
1506 MAP ("relsect", (int) BFD_RELOC_PPC_EMB_RELSEC16),
1507 MAP ("relsect@l", (int) BFD_RELOC_PPC_EMB_RELST_LO),
1508 MAP ("relsect@h", (int) BFD_RELOC_PPC_EMB_RELST_HI),
1509 MAP ("relsect@ha", (int) BFD_RELOC_PPC_EMB_RELST_HA),
1510 MAP ("bitfld", (int) BFD_RELOC_PPC_EMB_BIT_FLD),
1511 MAP ("relsda", (int) BFD_RELOC_PPC_EMB_RELSDA),
1512 MAP ("xgot", (int) BFD_RELOC_PPC_TOC16),
1513 MAP ("tls", (int) BFD_RELOC_PPC_TLS),
1514 MAP ("dtpmod", (int) BFD_RELOC_PPC_DTPMOD),
1515 MAP ("dtprel", (int) BFD_RELOC_PPC_DTPREL),
1516 MAP ("dtprel@l", (int) BFD_RELOC_PPC_DTPREL16_LO),
1517 MAP ("dtprel@h", (int) BFD_RELOC_PPC_DTPREL16_HI),
1518 MAP ("dtprel@ha", (int) BFD_RELOC_PPC_DTPREL16_HA),
1519 MAP ("tprel", (int) BFD_RELOC_PPC_TPREL),
1520 MAP ("tprel@l", (int) BFD_RELOC_PPC_TPREL16_LO),
1521 MAP ("tprel@h", (int) BFD_RELOC_PPC_TPREL16_HI),
1522 MAP ("tprel@ha", (int) BFD_RELOC_PPC_TPREL16_HA),
1523 MAP ("got@tlsgd", (int) BFD_RELOC_PPC_GOT_TLSGD16),
1524 MAP ("got@tlsgd@l", (int) BFD_RELOC_PPC_GOT_TLSGD16_LO),
1525 MAP ("got@tlsgd@h", (int) BFD_RELOC_PPC_GOT_TLSGD16_HI),
1526 MAP ("got@tlsgd@ha", (int) BFD_RELOC_PPC_GOT_TLSGD16_HA),
1527 MAP ("got@tlsld", (int) BFD_RELOC_PPC_GOT_TLSLD16),
1528 MAP ("got@tlsld@l", (int) BFD_RELOC_PPC_GOT_TLSLD16_LO),
1529 MAP ("got@tlsld@h", (int) BFD_RELOC_PPC_GOT_TLSLD16_HI),
1530 MAP ("got@tlsld@ha", (int) BFD_RELOC_PPC_GOT_TLSLD16_HA),
1531 MAP ("got@dtprel", (int) BFD_RELOC_PPC_GOT_DTPREL16),
1532 MAP ("got@dtprel@l", (int) BFD_RELOC_PPC_GOT_DTPREL16_LO),
1533 MAP ("got@dtprel@h", (int) BFD_RELOC_PPC_GOT_DTPREL16_HI),
1534 MAP ("got@dtprel@ha", (int) BFD_RELOC_PPC_GOT_DTPREL16_HA),
1535 MAP ("got@tprel", (int) BFD_RELOC_PPC_GOT_TPREL16),
1536 MAP ("got@tprel@l", (int) BFD_RELOC_PPC_GOT_TPREL16_LO),
1537 MAP ("got@tprel@h", (int) BFD_RELOC_PPC_GOT_TPREL16_HI),
1538 MAP ("got@tprel@ha", (int) BFD_RELOC_PPC_GOT_TPREL16_HA),
1539 /* The following are only valid for ppc64. Negative values are
1540 used instead of a flag. */
1541 MAP ("higher", - (int) BFD_RELOC_PPC64_HIGHER),
1542 MAP ("highera", - (int) BFD_RELOC_PPC64_HIGHER_S),
1543 MAP ("highest", - (int) BFD_RELOC_PPC64_HIGHEST),
1544 MAP ("highesta", - (int) BFD_RELOC_PPC64_HIGHEST_S),
1545 MAP ("tocbase", - (int) BFD_RELOC_PPC64_TOC),
1546 MAP ("toc", - (int) BFD_RELOC_PPC_TOC16),
1547 MAP ("toc@l", - (int) BFD_RELOC_PPC64_TOC16_LO),
1548 MAP ("toc@h", - (int) BFD_RELOC_PPC64_TOC16_HI),
1549 MAP ("toc@ha", - (int) BFD_RELOC_PPC64_TOC16_HA),
1550 MAP ("dtprel@higher", - (int) BFD_RELOC_PPC64_DTPREL16_HIGHER),
1551 MAP ("dtprel@highera", - (int) BFD_RELOC_PPC64_DTPREL16_HIGHERA),
1552 MAP ("dtprel@highest", - (int) BFD_RELOC_PPC64_DTPREL16_HIGHEST),
1553 MAP ("dtprel@highesta", - (int) BFD_RELOC_PPC64_DTPREL16_HIGHESTA),
1554 MAP ("tprel@higher", - (int) BFD_RELOC_PPC64_TPREL16_HIGHER),
1555 MAP ("tprel@highera", - (int) BFD_RELOC_PPC64_TPREL16_HIGHERA),
1556 MAP ("tprel@highest", - (int) BFD_RELOC_PPC64_TPREL16_HIGHEST),
1557 MAP ("tprel@highesta", - (int) BFD_RELOC_PPC64_TPREL16_HIGHESTA),
1558 { (char *) 0, 0, (int) BFD_RELOC_UNUSED }
1559 };
1560
1561 if (*str++ != '@')
1562 return BFD_RELOC_UNUSED;
1563
1564 for (ch = *str, str2 = ident;
1565 (str2 < ident + sizeof (ident) - 1
1566 && (ISALNUM (ch) || ch == '@'));
1567 ch = *++str)
1568 {
1569 *str2++ = TOLOWER (ch);
1570 }
1571
1572 *str2 = '\0';
1573 len = str2 - ident;
1574
1575 ch = ident[0];
1576 for (ptr = &mapping[0]; ptr->length > 0; ptr++)
1577 if (ch == ptr->string[0]
1578 && len == ptr->length
1579 && memcmp (ident, ptr->string, ptr->length) == 0)
1580 {
1581 int reloc = ptr->reloc;
1582
1583 if (reloc < 0)
1584 {
1585 if (!ppc_obj64)
1586 return BFD_RELOC_UNUSED;
1587 reloc = -reloc;
1588 }
1589
1590 if (!ppc_obj64)
1591 if (exp_p->X_add_number != 0
1592 && (reloc == (int) BFD_RELOC_16_GOTOFF
1593 || reloc == (int) BFD_RELOC_LO16_GOTOFF
1594 || reloc == (int) BFD_RELOC_HI16_GOTOFF
1595 || reloc == (int) BFD_RELOC_HI16_S_GOTOFF))
1596 as_warn (_("identifier+constant@got means identifier@got+constant"));
1597
1598 /* Now check for identifier@suffix+constant. */
1599 if (*str == '-' || *str == '+')
1600 {
1601 char *orig_line = input_line_pointer;
1602 expressionS new_exp;
1603
1604 input_line_pointer = str;
1605 expression (&new_exp);
1606 if (new_exp.X_op == O_constant)
1607 {
1608 exp_p->X_add_number += new_exp.X_add_number;
1609 str = input_line_pointer;
1610 }
1611
1612 if (&input_line_pointer != str_p)
1613 input_line_pointer = orig_line;
1614 }
1615 *str_p = str;
1616
1617 if (reloc == (int) BFD_RELOC_PPC64_TOC
1618 && exp_p->X_op == O_symbol)
1619 {
1620 /* This reloc type ignores the symbol. Change the symbol
1621 so that the dummy .TOC. symbol can be omitted from the
1622 object file. */
1623 exp_p->X_add_symbol = &abs_symbol;
1624 }
1625
1626 return (bfd_reloc_code_real_type) reloc;
1627 }
1628
1629 return BFD_RELOC_UNUSED;
1630}
1631
1632/* Like normal .long/.short/.word, except support @got, etc.
1633 Clobbers input_line_pointer, checks end-of-line. */
1634static void
1635ppc_elf_cons (nbytes)
1636 register int nbytes; /* 1=.byte, 2=.word, 4=.long, 8=.llong. */
1637{
1638 expressionS exp;
1639 bfd_reloc_code_real_type reloc;
1640
1641 if (is_it_end_of_statement ())
1642 {
1643 demand_empty_rest_of_line ();
1644 return;
1645 }
1646
1647 do
1648 {
1649 expression (&exp);
1650 if (exp.X_op == O_symbol
1651 && *input_line_pointer == '@'
1652 && (reloc = ppc_elf_suffix (&input_line_pointer,
1653 &exp)) != BFD_RELOC_UNUSED)
1654 {
1655 reloc_howto_type *reloc_howto;
1656 int size;
1657
1658 reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
1659 size = bfd_get_reloc_size (reloc_howto);
1660
1661 if (size > nbytes)
1662 {
1663 as_bad (_("%s relocations do not fit in %d bytes\n"),
1664 reloc_howto->name, nbytes);
1665 }
1666 else
1667 {
1668 char *p;
1669 int offset;
1670
1671 p = frag_more (nbytes);
1672 offset = 0;
1673 if (target_big_endian)
1674 offset = nbytes - size;
1675 fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size,
1676 &exp, 0, reloc);
1677 }
1678 }
1679 else
1680 emit_expr (&exp, (unsigned int) nbytes);
1681 }
1682 while (*input_line_pointer++ == ',');
1683
1684 /* Put terminator back into stream. */
1685 input_line_pointer--;
1686 demand_empty_rest_of_line ();
1687}
1688
1689/* Solaris pseduo op to change to the .rodata section. */
1690static void
1691ppc_elf_rdata (xxx)
1692 int xxx;
1693{
1694 char *save_line = input_line_pointer;
1695 static char section[] = ".rodata\n";
1696
1697 /* Just pretend this is .section .rodata */
1698 input_line_pointer = section;
1699 obj_elf_section (xxx);
1700
1701 input_line_pointer = save_line;
1702}
1703
1704/* Pseudo op to make file scope bss items. */
1705static void
1706ppc_elf_lcomm (xxx)
1707 int xxx ATTRIBUTE_UNUSED;
1708{
1709 register char *name;
1710 register char c;
1711 register char *p;
1712 offsetT size;
1713 register symbolS *symbolP;
1714 offsetT align;
1715 segT old_sec;
1716 int old_subsec;
1717 char *pfrag;
1718 int align2;
1719
1720 name = input_line_pointer;
1721 c = get_symbol_end ();
1722
1723 /* just after name is now '\0'. */
1724 p = input_line_pointer;
1725 *p = c;
1726 SKIP_WHITESPACE ();
1727 if (*input_line_pointer != ',')
1728 {
1729 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
1730 ignore_rest_of_line ();
1731 return;
1732 }
1733
1734 input_line_pointer++; /* skip ',' */
1735 if ((size = get_absolute_expression ()) < 0)
1736 {
1737 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size);
1738 ignore_rest_of_line ();
1739 return;
1740 }
1741
1742 /* The third argument to .lcomm is the alignment. */
1743 if (*input_line_pointer != ',')
1744 align = 8;
1745 else
1746 {
1747 ++input_line_pointer;
1748 align = get_absolute_expression ();
1749 if (align <= 0)
1750 {
1751 as_warn (_("ignoring bad alignment"));
1752 align = 8;
1753 }
1754 }
1755
1756 *p = 0;
1757 symbolP = symbol_find_or_make (name);
1758 *p = c;
1759
1760 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
1761 {
1762 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
1763 S_GET_NAME (symbolP));
1764 ignore_rest_of_line ();
1765 return;
1766 }
1767
1768 if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size)
1769 {
1770 as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
1771 S_GET_NAME (symbolP),
1772 (long) S_GET_VALUE (symbolP),
1773 (long) size);
1774
1775 ignore_rest_of_line ();
1776 return;
1777 }
1778
1779 /* Allocate_bss. */
1780 old_sec = now_seg;
1781 old_subsec = now_subseg;
1782 if (align)
1783 {
1784 /* Convert to a power of 2 alignment. */
1785 for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2);
1786 if (align != 1)
1787 {
1788 as_bad (_("Common alignment not a power of 2"));
1789 ignore_rest_of_line ();
1790 return;
1791 }
1792 }
1793 else
1794 align2 = 0;
1795
1796 record_alignment (bss_section, align2);
1797 subseg_set (bss_section, 0);
1798 if (align2)
1799 frag_align (align2, 0, 0);
1800 if (S_GET_SEGMENT (symbolP) == bss_section)
1801 symbol_get_frag (symbolP)->fr_symbol = 0;
1802 symbol_set_frag (symbolP, frag_now);
1803 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size,
1804 (char *) 0);
1805 *pfrag = 0;
1806 S_SET_SIZE (symbolP, size);
1807 S_SET_SEGMENT (symbolP, bss_section);
1808 subseg_set (old_sec, old_subsec);
1809 demand_empty_rest_of_line ();
1810}
1811
1812/* Validate any relocations emitted for -mrelocatable, possibly adding
1813 fixups for word relocations in writable segments, so we can adjust
1814 them at runtime. */
1815static void
1816ppc_elf_validate_fix (fixp, seg)
1817 fixS *fixp;
1818 segT seg;
1819{
1820 if (fixp->fx_done || fixp->fx_pcrel)
1821 return;
1822
1823 switch (shlib)
1824 {
1825 case SHLIB_NONE:
1826 case SHLIB_PIC:
1827 return;
1828
1829 case SHLIB_MRELOCATABLE:
1830 if (fixp->fx_r_type <= BFD_RELOC_UNUSED
1831 && fixp->fx_r_type != BFD_RELOC_16_GOTOFF
1832 && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF
1833 && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF
1834 && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
1835 && fixp->fx_r_type != BFD_RELOC_16_BASEREL
1836 && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL
1837 && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL
1838 && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL
1839 && (seg->flags & SEC_LOAD) != 0
1840 && strcmp (segment_name (seg), ".got2") != 0
1841 && strcmp (segment_name (seg), ".dtors") != 0
1842 && strcmp (segment_name (seg), ".ctors") != 0
1843 && strcmp (segment_name (seg), ".fixup") != 0
1844 && strcmp (segment_name (seg), ".gcc_except_table") != 0
1845 && strcmp (segment_name (seg), ".eh_frame") != 0
1846 && strcmp (segment_name (seg), ".ex_shared") != 0)
1847 {
1848 if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0
1849 || fixp->fx_r_type != BFD_RELOC_CTOR)
1850 {
1851 as_bad_where (fixp->fx_file, fixp->fx_line,
1852 _("Relocation cannot be done when using -mrelocatable"));
1853 }
1854 }
1855 return;
1856 }
1857}
1858
1859/* Prevent elf_frob_file_before_adjust removing a weak undefined
1860 function descriptor sym if the corresponding code sym is used. */
1861
1862void
1863ppc_frob_file_before_adjust ()
1864{
1865 symbolS *symp;
1866
1867 if (!ppc_obj64)
1868 return;
1869
1870 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
1871 {
1872 const char *name;
1873 char *dotname;
1874 symbolS *dotsym;
1875 size_t len;
1876
1877 name = S_GET_NAME (symp);
1878 if (name[0] == '.')
1879 continue;
1880
1881 if (! S_IS_WEAK (symp)
1882 || S_IS_DEFINED (symp))
1883 continue;
1884
1885 len = strlen (name) + 1;
1886 dotname = xmalloc (len + 1);
1887 dotname[0] = '.';
1888 memcpy (dotname + 1, name, len);
1889 dotsym = symbol_find (dotname);
1890 free (dotname);
1891 if (dotsym != NULL && (symbol_used_p (dotsym)
1892 || symbol_used_in_reloc_p (dotsym)))
1893 {
1894 symbol_mark_used (symp);
1895 }
1896 }
1897
1898 /* Don't emit .TOC. symbol. */
1899 symp = symbol_find (".TOC.");
1900 if (symp != NULL)
1901 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
1902}
1903#endif /* OBJ_ELF */
1904
1905
1906#ifdef TE_PE
1907
1908/*
1909 * Summary of parse_toc_entry.
1910 *
1911 * in: Input_line_pointer points to the '[' in one of:
1912 *
1913 * [toc] [tocv] [toc32] [toc64]
1914 *
1915 * Anything else is an error of one kind or another.
1916 *
1917 * out:
1918 * return value: success or failure
1919 * toc_kind: kind of toc reference
1920 * input_line_pointer:
1921 * success: first char after the ']'
1922 * failure: unchanged
1923 *
1924 * settings:
1925 *
1926 * [toc] - rv == success, toc_kind = default_toc
1927 * [tocv] - rv == success, toc_kind = data_in_toc
1928 * [toc32] - rv == success, toc_kind = must_be_32
1929 * [toc64] - rv == success, toc_kind = must_be_64
1930 *
1931 */
1932
1933enum toc_size_qualifier
1934{
1935 default_toc, /* The toc cell constructed should be the system default size */
1936 data_in_toc, /* This is a direct reference to a toc cell */
1937 must_be_32, /* The toc cell constructed must be 32 bits wide */
1938 must_be_64 /* The toc cell constructed must be 64 bits wide */
1939};
1940
1941static int
1942parse_toc_entry (toc_kind)
1943 enum toc_size_qualifier *toc_kind;
1944{
1945 char *start;
1946 char *toc_spec;
1947 char c;
1948 enum toc_size_qualifier t;
1949
1950 /* Save the input_line_pointer. */
1951 start = input_line_pointer;
1952
1953 /* Skip over the '[' , and whitespace. */
1954 ++input_line_pointer;
1955 SKIP_WHITESPACE ();
1956
1957 /* Find the spelling of the operand. */
1958 toc_spec = input_line_pointer;
1959 c = get_symbol_end ();
1960
1961 if (strcmp (toc_spec, "toc") == 0)
1962 {
1963 t = default_toc;
1964 }
1965 else if (strcmp (toc_spec, "tocv") == 0)
1966 {
1967 t = data_in_toc;
1968 }
1969 else if (strcmp (toc_spec, "toc32") == 0)
1970 {
1971 t = must_be_32;
1972 }
1973 else if (strcmp (toc_spec, "toc64") == 0)
1974 {
1975 t = must_be_64;
1976 }
1977 else
1978 {
1979 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec);
1980 *input_line_pointer = c;
1981 input_line_pointer = start;
1982 return 0;
1983 }
1984
1985 /* Now find the ']'. */
1986 *input_line_pointer = c;
1987
1988 SKIP_WHITESPACE (); /* leading whitespace could be there. */
1989 c = *input_line_pointer++; /* input_line_pointer->past char in c. */
1990
1991 if (c != ']')
1992 {
1993 as_bad (_("syntax error: expected `]', found `%c'"), c);
1994 input_line_pointer = start;
1995 return 0;
1996 }
1997
1998 *toc_kind = t;
1999 return 1;
2000}
2001#endif
2002
2003
2004
2005#ifdef OBJ_ELF
2006#define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff))
2007static void
2008ppc_apuinfo_section_add (apu, version)
2009 unsigned int apu, version;
2010{
2011 unsigned int i;
2012
2013 /* Check we don't already exist. */
2014 for (i = 0; i < ppc_apuinfo_num; i++)
2015 if (ppc_apuinfo_list[i] == APUID (apu, version))
2016 return;
2017
2018 if (ppc_apuinfo_num == ppc_apuinfo_num_alloc)
2019 {
2020 if (ppc_apuinfo_num_alloc == 0)
2021 {
2022 ppc_apuinfo_num_alloc = 4;
2023 ppc_apuinfo_list = (unsigned long *)
2024 xmalloc (sizeof (unsigned long) * ppc_apuinfo_num_alloc);
2025 }
2026 else
2027 {
2028 ppc_apuinfo_num_alloc += 4;
2029 ppc_apuinfo_list = (unsigned long *) xrealloc (ppc_apuinfo_list,
2030 sizeof (unsigned long) * ppc_apuinfo_num_alloc);
2031 }
2032 }
2033 ppc_apuinfo_list[ppc_apuinfo_num++] = APUID (apu, version);
2034}
2035#undef APUID
2036#endif
2037
2038
2039
2040/* We need to keep a list of fixups. We can't simply generate them as
2041 we go, because that would require us to first create the frag, and
2042 that would screw up references to ``.''. */
2043
2044struct ppc_fixup
2045{
2046 expressionS exp;
2047 int opindex;
2048 bfd_reloc_code_real_type reloc;
2049};
2050
2051#define MAX_INSN_FIXUPS (5)
2052
2053/* This routine is called for each instruction to be assembled. */
2054
2055void
2056md_assemble (str)
2057 char *str;
2058{
2059 char *s;
2060 const struct powerpc_opcode *opcode;
2061 unsigned long insn;
2062 const unsigned char *opindex_ptr;
2063 int skip_optional;
2064 int need_paren;
2065 int next_opindex;
2066 struct ppc_fixup fixups[MAX_INSN_FIXUPS];
2067 int fc;
2068 char *f;
2069 int i;
2070#ifdef OBJ_ELF
2071 bfd_reloc_code_real_type reloc;
2072#endif
2073
2074 /* Get the opcode. */
2075 for (s = str; *s != '\0' && ! ISSPACE (*s); s++)
2076 ;
2077 if (*s != '\0')
2078 *s++ = '\0';
2079
2080 /* Look up the opcode in the hash table. */
2081 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str);
2082 if (opcode == (const struct powerpc_opcode *) NULL)
2083 {
2084 const struct powerpc_macro *macro;
2085
2086 macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str);
2087 if (macro == (const struct powerpc_macro *) NULL)
2088 as_bad (_("Unrecognized opcode: `%s'"), str);
2089 else
2090 ppc_macro (s, macro);
2091
2092 return;
2093 }
2094
2095 insn = opcode->opcode;
2096
2097 str = s;
2098 while (ISSPACE (*str))
2099 ++str;
2100
2101 /* PowerPC operands are just expressions. The only real issue is
2102 that a few operand types are optional. All cases which might use
2103 an optional operand separate the operands only with commas (in
2104 some cases parentheses are used, as in ``lwz 1,0(1)'' but such
2105 cases never have optional operands). There is never more than
2106 one optional operand for an instruction. So, before we start
2107 seriously parsing the operands, we check to see if we have an
2108 optional operand, and, if we do, we count the number of commas to
2109 see whether the operand should be omitted. */
2110 skip_optional = 0;
2111 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
2112 {
2113 const struct powerpc_operand *operand;
2114
2115 operand = &powerpc_operands[*opindex_ptr];
2116 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0)
2117 {
2118 unsigned int opcount;
2119 unsigned int num_operands_expected;
2120 unsigned int i;
2121
2122 /* There is an optional operand. Count the number of
2123 commas in the input line. */
2124 if (*str == '\0')
2125 opcount = 0;
2126 else
2127 {
2128 opcount = 1;
2129 s = str;
2130 while ((s = strchr (s, ',')) != (char *) NULL)
2131 {
2132 ++opcount;
2133 ++s;
2134 }
2135 }
2136
2137 /* Compute the number of expected operands.
2138 Do not count fake operands. */
2139 for (num_operands_expected = 0, i = 0; opcode->operands[i]; i ++)
2140 if ((powerpc_operands [opcode->operands[i]].flags & PPC_OPERAND_FAKE) == 0)
2141 ++ num_operands_expected;
2142
2143 /* If there are fewer operands in the line then are called
2144 for by the instruction, we want to skip the optional
2145 operand. */
2146 if (opcount < num_operands_expected)
2147 skip_optional = 1;
2148
2149 break;
2150 }
2151 }
2152
2153 /* Gather the operands. */
2154 need_paren = 0;
2155 next_opindex = 0;
2156 fc = 0;
2157 for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++)
2158 {
2159 const struct powerpc_operand *operand;
2160 const char *errmsg;
2161 char *hold;
2162 expressionS ex;
2163 char endc;
2164
2165 if (next_opindex == 0)
2166 operand = &powerpc_operands[*opindex_ptr];
2167 else
2168 {
2169 operand = &powerpc_operands[next_opindex];
2170 next_opindex = 0;
2171 }
2172 errmsg = NULL;
2173
2174 /* If this is a fake operand, then we do not expect anything
2175 from the input. */
2176 if ((operand->flags & PPC_OPERAND_FAKE) != 0)
2177 {
2178 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg);
2179 if (errmsg != (const char *) NULL)
2180 as_bad (errmsg);
2181 continue;
2182 }
2183
2184 /* If this is an optional operand, and we are skipping it, just
2185 insert a zero. */
2186 if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0
2187 && skip_optional)
2188 {
2189 if (operand->insert)
2190 {
2191 insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg);
2192 if (errmsg != (const char *) NULL)
2193 as_bad (errmsg);
2194 }
2195 if ((operand->flags & PPC_OPERAND_NEXT) != 0)
2196 next_opindex = *opindex_ptr + 1;
2197 continue;
2198 }
2199
2200 /* Gather the operand. */
2201 hold = input_line_pointer;
2202 input_line_pointer = str;
2203
2204#ifdef TE_PE
2205 if (*input_line_pointer == '[')
2206 {
2207 /* We are expecting something like the second argument here:
2208 *
2209 * lwz r4,[toc].GS.0.static_int(rtoc)
2210 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2211 * The argument following the `]' must be a symbol name, and the
2212 * register must be the toc register: 'rtoc' or '2'
2213 *
2214 * The effect is to 0 as the displacement field
2215 * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
2216 * the appropriate variation) reloc against it based on the symbol.
2217 * The linker will build the toc, and insert the resolved toc offset.
2218 *
2219 * Note:
2220 * o The size of the toc entry is currently assumed to be
2221 * 32 bits. This should not be assumed to be a hard coded
2222 * number.
2223 * o In an effort to cope with a change from 32 to 64 bits,
2224 * there are also toc entries that are specified to be
2225 * either 32 or 64 bits:
2226 * lwz r4,[toc32].GS.0.static_int(rtoc)
2227 * lwz r4,[toc64].GS.0.static_int(rtoc)
2228 * These demand toc entries of the specified size, and the
2229 * instruction probably requires it.
2230 */
2231
2232 int valid_toc;
2233 enum toc_size_qualifier toc_kind;
2234 bfd_reloc_code_real_type toc_reloc;
2235
2236 /* Go parse off the [tocXX] part. */
2237 valid_toc = parse_toc_entry (&toc_kind);
2238
2239 if (!valid_toc)
2240 {
2241 /* Note: message has already been issued.
2242 FIXME: what sort of recovery should we do?
2243 demand_rest_of_line (); return; ? */
2244 }
2245
2246 /* Now get the symbol following the ']'. */
2247 expression (&ex);
2248
2249 switch (toc_kind)
2250 {
2251 case default_toc:
2252 /* In this case, we may not have seen the symbol yet,
2253 since it is allowed to appear on a .extern or .globl
2254 or just be a label in the .data section. */
2255 toc_reloc = BFD_RELOC_PPC_TOC16;
2256 break;
2257 case data_in_toc:
2258 /* 1. The symbol must be defined and either in the toc
2259 section, or a global.
2260 2. The reloc generated must have the TOCDEFN flag set
2261 in upper bit mess of the reloc type.
2262 FIXME: It's a little confusing what the tocv
2263 qualifier can be used for. At the very least, I've
2264 seen three uses, only one of which I'm sure I can
2265 explain. */
2266 if (ex.X_op == O_symbol)
2267 {
2268 assert (ex.X_add_symbol != NULL);
2269 if (symbol_get_bfdsym (ex.X_add_symbol)->section
2270 != tocdata_section)
2271 {
2272 as_bad (_("[tocv] symbol is not a toc symbol"));
2273 }
2274 }
2275
2276 toc_reloc = BFD_RELOC_PPC_TOC16;
2277 break;
2278 case must_be_32:
2279 /* FIXME: these next two specifically specify 32/64 bit
2280 toc entries. We don't support them today. Is this
2281 the right way to say that? */
2282 toc_reloc = BFD_RELOC_UNUSED;
2283 as_bad (_("Unimplemented toc32 expression modifier"));
2284 break;
2285 case must_be_64:
2286 /* FIXME: see above. */
2287 toc_reloc = BFD_RELOC_UNUSED;
2288 as_bad (_("Unimplemented toc64 expression modifier"));
2289 break;
2290 default:
2291 fprintf (stderr,
2292 _("Unexpected return value [%d] from parse_toc_entry!\n"),
2293 toc_kind);
2294 abort ();
2295 break;
2296 }
2297
2298 /* We need to generate a fixup for this expression. */
2299 if (fc >= MAX_INSN_FIXUPS)
2300 as_fatal (_("too many fixups"));
2301
2302 fixups[fc].reloc = toc_reloc;
2303 fixups[fc].exp = ex;
2304 fixups[fc].opindex = *opindex_ptr;
2305 ++fc;
2306
2307 /* Ok. We've set up the fixup for the instruction. Now make it
2308 look like the constant 0 was found here. */
2309 ex.X_unsigned = 1;
2310 ex.X_op = O_constant;
2311 ex.X_add_number = 0;
2312 ex.X_add_symbol = NULL;
2313 ex.X_op_symbol = NULL;
2314 }
2315
2316 else
2317#endif /* TE_PE */
2318 {
2319 if (! register_name (&ex))
2320 {
2321 if ((operand->flags & PPC_OPERAND_CR) != 0)
2322 cr_operand = TRUE;
2323 expression (&ex);
2324 cr_operand = FALSE;
2325 }
2326 }
2327
2328 str = input_line_pointer;
2329 input_line_pointer = hold;
2330
2331 if (ex.X_op == O_illegal)
2332 as_bad (_("illegal operand"));
2333 else if (ex.X_op == O_absent)
2334 as_bad (_("missing operand"));
2335 else if (ex.X_op == O_register)
2336 {
2337 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2338 (char *) NULL, 0);
2339 }
2340 else if (ex.X_op == O_constant)
2341 {
2342#ifdef OBJ_ELF
2343 /* Allow @HA, @L, @H on constants. */
2344 char *orig_str = str;
2345
2346 if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2347 switch (reloc)
2348 {
2349 default:
2350 str = orig_str;
2351 break;
2352
2353 case BFD_RELOC_LO16:
2354 /* X_unsigned is the default, so if the user has done
2355 something which cleared it, we always produce a
2356 signed value. */
2357 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2358 ex.X_add_number &= 0xffff;
2359 else
2360 ex.X_add_number = SEX16 (ex.X_add_number);
2361 break;
2362
2363 case BFD_RELOC_HI16:
2364 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2365 ex.X_add_number = PPC_HI (ex.X_add_number);
2366 else
2367 ex.X_add_number = SEX16 (PPC_HI (ex.X_add_number));
2368 break;
2369
2370 case BFD_RELOC_HI16_S:
2371 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2372 ex.X_add_number = PPC_HA (ex.X_add_number);
2373 else
2374 ex.X_add_number = SEX16 (PPC_HA (ex.X_add_number));
2375 break;
2376
2377 case BFD_RELOC_PPC64_HIGHER:
2378 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2379 ex.X_add_number = PPC_HIGHER (ex.X_add_number);
2380 else
2381 ex.X_add_number = SEX16 (PPC_HIGHER (ex.X_add_number));
2382 break;
2383
2384 case BFD_RELOC_PPC64_HIGHER_S:
2385 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2386 ex.X_add_number = PPC_HIGHERA (ex.X_add_number);
2387 else
2388 ex.X_add_number = SEX16 (PPC_HIGHERA (ex.X_add_number));
2389 break;
2390
2391 case BFD_RELOC_PPC64_HIGHEST:
2392 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2393 ex.X_add_number = PPC_HIGHEST (ex.X_add_number);
2394 else
2395 ex.X_add_number = SEX16 (PPC_HIGHEST (ex.X_add_number));
2396 break;
2397
2398 case BFD_RELOC_PPC64_HIGHEST_S:
2399 if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED))
2400 ex.X_add_number = PPC_HIGHESTA (ex.X_add_number);
2401 else
2402 ex.X_add_number = SEX16 (PPC_HIGHESTA (ex.X_add_number));
2403 break;
2404 }
2405#endif /* OBJ_ELF */
2406 insn = ppc_insert_operand (insn, operand, ex.X_add_number,
2407 (char *) NULL, 0);
2408 }
2409#ifdef OBJ_ELF
2410 else if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED)
2411 {
2412 /* Some TLS tweaks. */
2413 switch (reloc)
2414 {
2415 default:
2416 break;
2417 case BFD_RELOC_PPC_TLS:
2418 insn = ppc_insert_operand (insn, operand, ppc_obj64 ? 13 : 2,
2419 (char *) NULL, 0);
2420 break;
2421 /* We'll only use the 32 (or 64) bit form of these relocations
2422 in constants. Instructions get the 16 bit form. */
2423 case BFD_RELOC_PPC_DTPREL:
2424 reloc = BFD_RELOC_PPC_DTPREL16;
2425 break;
2426 case BFD_RELOC_PPC_TPREL:
2427 reloc = BFD_RELOC_PPC_TPREL16;
2428 break;
2429 }
2430
2431 /* For the absolute forms of branches, convert the PC
2432 relative form back into the absolute. */
2433 if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0)
2434 {
2435 switch (reloc)
2436 {
2437 case BFD_RELOC_PPC_B26:
2438 reloc = BFD_RELOC_PPC_BA26;
2439 break;
2440 case BFD_RELOC_PPC_B16:
2441 reloc = BFD_RELOC_PPC_BA16;
2442 break;
2443 case BFD_RELOC_PPC_B16_BRTAKEN:
2444 reloc = BFD_RELOC_PPC_BA16_BRTAKEN;
2445 break;
2446 case BFD_RELOC_PPC_B16_BRNTAKEN:
2447 reloc = BFD_RELOC_PPC_BA16_BRNTAKEN;
2448 break;
2449 default:
2450 break;
2451 }
2452 }
2453
2454 if (ppc_obj64
2455 && (operand->flags & PPC_OPERAND_DS) != 0)
2456 {
2457 switch (reloc)
2458 {
2459 case BFD_RELOC_16:
2460 reloc = BFD_RELOC_PPC64_ADDR16_DS;
2461 break;
2462 case BFD_RELOC_LO16:
2463 reloc = BFD_RELOC_PPC64_ADDR16_LO_DS;
2464 break;
2465 case BFD_RELOC_16_GOTOFF:
2466 reloc = BFD_RELOC_PPC64_GOT16_DS;
2467 break;
2468 case BFD_RELOC_LO16_GOTOFF:
2469 reloc = BFD_RELOC_PPC64_GOT16_LO_DS;
2470 break;
2471 case BFD_RELOC_LO16_PLTOFF:
2472 reloc = BFD_RELOC_PPC64_PLT16_LO_DS;
2473 break;
2474 case BFD_RELOC_16_BASEREL:
2475 reloc = BFD_RELOC_PPC64_SECTOFF_DS;
2476 break;
2477 case BFD_RELOC_LO16_BASEREL:
2478 reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS;
2479 break;
2480 case BFD_RELOC_PPC_TOC16:
2481 reloc = BFD_RELOC_PPC64_TOC16_DS;
2482 break;
2483 case BFD_RELOC_PPC64_TOC16_LO:
2484 reloc = BFD_RELOC_PPC64_TOC16_LO_DS;
2485 break;
2486 case BFD_RELOC_PPC64_PLTGOT16:
2487 reloc = BFD_RELOC_PPC64_PLTGOT16_DS;
2488 break;
2489 case BFD_RELOC_PPC64_PLTGOT16_LO:
2490 reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS;
2491 break;
2492 case BFD_RELOC_PPC_DTPREL16:
2493 reloc = BFD_RELOC_PPC64_DTPREL16_DS;
2494 break;
2495 case BFD_RELOC_PPC_DTPREL16_LO:
2496 reloc = BFD_RELOC_PPC64_DTPREL16_LO_DS;
2497 break;
2498 case BFD_RELOC_PPC_TPREL16:
2499 reloc = BFD_RELOC_PPC64_TPREL16_DS;
2500 break;
2501 case BFD_RELOC_PPC_TPREL16_LO:
2502 reloc = BFD_RELOC_PPC64_TPREL16_LO_DS;
2503 break;
2504 case BFD_RELOC_PPC_GOT_DTPREL16:
2505 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
2506 case BFD_RELOC_PPC_GOT_TPREL16:
2507 case BFD_RELOC_PPC_GOT_TPREL16_LO:
2508 break;
2509 default:
2510 as_bad (_("unsupported relocation for DS offset field"));
2511 break;
2512 }
2513 }
2514
2515 /* We need to generate a fixup for this expression. */
2516 if (fc >= MAX_INSN_FIXUPS)
2517 as_fatal (_("too many fixups"));
2518 fixups[fc].exp = ex;
2519 fixups[fc].opindex = 0;
2520 fixups[fc].reloc = reloc;
2521 ++fc;
2522 }
2523#endif /* OBJ_ELF */
2524
2525 else
2526 {
2527 /* We need to generate a fixup for this expression. */
2528 if (fc >= MAX_INSN_FIXUPS)
2529 as_fatal (_("too many fixups"));
2530 fixups[fc].exp = ex;
2531 fixups[fc].opindex = *opindex_ptr;
2532 fixups[fc].reloc = BFD_RELOC_UNUSED;
2533 ++fc;
2534 }
2535
2536 if (need_paren)
2537 {
2538 endc = ')';
2539 need_paren = 0;
2540 }
2541 else if ((operand->flags & PPC_OPERAND_PARENS) != 0)
2542 {
2543 endc = '(';
2544 need_paren = 1;
2545 }
2546 else
2547 endc = ',';
2548
2549 /* The call to expression should have advanced str past any
2550 whitespace. */
2551 if (*str != endc
2552 && (endc != ',' || *str != '\0'))
2553 {
2554 as_bad (_("syntax error; found `%c' but expected `%c'"), *str, endc);
2555 break;
2556 }
2557
2558 if (*str != '\0')
2559 ++str;
2560 }
2561
2562 while (ISSPACE (*str))
2563 ++str;
2564
2565 if (*str != '\0')
2566 as_bad (_("junk at end of line: `%s'"), str);
2567
2568#ifdef OBJ_ELF
2569 /* Do we need/want a APUinfo section? */
2570 if (ppc_cpu & (PPC_OPCODE_SPE
2571 | PPC_OPCODE_ISEL | PPC_OPCODE_EFS
2572 | PPC_OPCODE_BRLOCK | PPC_OPCODE_PMR | PPC_OPCODE_CACHELCK
2573 | PPC_OPCODE_RFMCI))
2574 {
2575 /* These are all version "1". */
2576 if (opcode->flags & PPC_OPCODE_SPE)
2577 ppc_apuinfo_section_add (PPC_APUINFO_SPE, 1);
2578 if (opcode->flags & PPC_OPCODE_ISEL)
2579 ppc_apuinfo_section_add (PPC_APUINFO_ISEL, 1);
2580 if (opcode->flags & PPC_OPCODE_EFS)
2581 ppc_apuinfo_section_add (PPC_APUINFO_EFS, 1);
2582 if (opcode->flags & PPC_OPCODE_BRLOCK)
2583 ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK, 1);
2584 if (opcode->flags & PPC_OPCODE_PMR)
2585 ppc_apuinfo_section_add (PPC_APUINFO_PMR, 1);
2586 if (opcode->flags & PPC_OPCODE_CACHELCK)
2587 ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK, 1);
2588 if (opcode->flags & PPC_OPCODE_RFMCI)
2589 ppc_apuinfo_section_add (PPC_APUINFO_RFMCI, 1);
2590 }
2591#endif
2592
2593 /* Write out the instruction. */
2594 f = frag_more (4);
2595 md_number_to_chars (f, insn, 4);
2596
2597#ifdef OBJ_ELF
2598 dwarf2_emit_insn (4);
2599#endif
2600
2601 /* Create any fixups. At this point we do not use a
2602 bfd_reloc_code_real_type, but instead just use the
2603 BFD_RELOC_UNUSED plus the operand index. This lets us easily
2604 handle fixups for any operand type, although that is admittedly
2605 not a very exciting feature. We pick a BFD reloc type in
2606 md_apply_fix3. */
2607 for (i = 0; i < fc; i++)
2608 {
2609 const struct powerpc_operand *operand;
2610
2611 operand = &powerpc_operands[fixups[i].opindex];
2612 if (fixups[i].reloc != BFD_RELOC_UNUSED)
2613 {
2614 reloc_howto_type *reloc_howto;
2615 int size;
2616 int offset;
2617 fixS *fixP;
2618
2619 reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
2620 if (!reloc_howto)
2621 abort ();
2622
2623 size = bfd_get_reloc_size (reloc_howto);
2624 offset = target_big_endian ? (4 - size) : 0;
2625
2626 if (size < 1 || size > 4)
2627 abort ();
2628
2629 fixP = fix_new_exp (frag_now,
2630 f - frag_now->fr_literal + offset,
2631 size,
2632 &fixups[i].exp,
2633 reloc_howto->pc_relative,
2634 fixups[i].reloc);
2635
2636 /* Turn off complaints that the addend is too large for things like
2637 foo+100000@ha. */
2638 switch (fixups[i].reloc)
2639 {
2640 case BFD_RELOC_16_GOTOFF:
2641 case BFD_RELOC_PPC_TOC16:
2642 case BFD_RELOC_LO16:
2643 case BFD_RELOC_HI16:
2644 case BFD_RELOC_HI16_S:
2645#ifdef OBJ_ELF
2646 case BFD_RELOC_PPC64_HIGHER:
2647 case BFD_RELOC_PPC64_HIGHER_S:
2648 case BFD_RELOC_PPC64_HIGHEST:
2649 case BFD_RELOC_PPC64_HIGHEST_S:
2650#endif
2651 fixP->fx_no_overflow = 1;
2652 break;
2653 default:
2654 break;
2655 }
2656 }
2657 else
2658 fix_new_exp (frag_now,
2659 f - frag_now->fr_literal,
2660 4,
2661 &fixups[i].exp,
2662 (operand->flags & PPC_OPERAND_RELATIVE) != 0,
2663 ((bfd_reloc_code_real_type)
2664 (fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
2665 }
2666}
2667
2668/* Handle a macro. Gather all the operands, transform them as
2669 described by the macro, and call md_assemble recursively. All the
2670 operands are separated by commas; we don't accept parentheses
2671 around operands here. */
2672
2673static void
2674ppc_macro (str, macro)
2675 char *str;
2676 const struct powerpc_macro *macro;
2677{
2678 char *operands[10];
2679 unsigned int count;
2680 char *s;
2681 unsigned int len;
2682 const char *format;
2683 int arg;
2684 char *send;
2685 char *complete;
2686
2687 /* Gather the users operands into the operands array. */
2688 count = 0;
2689 s = str;
2690 while (1)
2691 {
2692 if (count >= sizeof operands / sizeof operands[0])
2693 break;
2694 operands[count++] = s;
2695 s = strchr (s, ',');
2696 if (s == (char *) NULL)
2697 break;
2698 *s++ = '\0';
2699 }
2700
2701 if (count != macro->operands)
2702 {
2703 as_bad (_("wrong number of operands"));
2704 return;
2705 }
2706
2707 /* Work out how large the string must be (the size is unbounded
2708 because it includes user input). */
2709 len = 0;
2710 format = macro->format;
2711 while (*format != '\0')
2712 {
2713 if (*format != '%')
2714 {
2715 ++len;
2716 ++format;
2717 }
2718 else
2719 {
2720 arg = strtol (format + 1, &send, 10);
2721 know (send != format && arg >= 0 && arg < count);
2722 len += strlen (operands[arg]);
2723 format = send;
2724 }
2725 }
2726
2727 /* Put the string together. */
2728 complete = s = (char *) alloca (len + 1);
2729 format = macro->format;
2730 while (*format != '\0')
2731 {
2732 if (*format != '%')
2733 *s++ = *format++;
2734 else
2735 {
2736 arg = strtol (format + 1, &send, 10);
2737 strcpy (s, operands[arg]);
2738 s += strlen (s);
2739 format = send;
2740 }
2741 }
2742 *s = '\0';
2743
2744 /* Assemble the constructed instruction. */
2745 md_assemble (complete);
2746}
2747
2748
2749#ifdef OBJ_ELF
2750/* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED. */
2751
2752int
2753ppc_section_letter (letter, ptr_msg)
2754 int letter;
2755 char **ptr_msg;
2756{
2757 if (letter == 'e')
2758 return SHF_EXCLUDE;
2759
2760 *ptr_msg = _("Bad .section directive: want a,e,w,x,M,S,G,T in string");
2761 return 0;
2762}
2763
2764int
2765ppc_section_word (str, len)
2766 char *str;
2767 size_t len;
2768{
2769 if (len == 7 && strncmp (str, "exclude", 7) == 0)
2770 return SHF_EXCLUDE;
2771
2772 return -1;
2773}
2774
2775int
2776ppc_section_type (str, len)
2777 char *str;
2778 size_t len;
2779{
2780 if (len == 7 && strncmp (str, "ordered", 7) == 0)
2781 return SHT_ORDERED;
2782
2783 return -1;
2784}
2785
2786int
2787ppc_section_flags (flags, attr, type)
2788 int flags;
2789 int attr;
2790 int type;
2791{
2792 if (type == SHT_ORDERED)
2793 flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES;
2794
2795 if (attr & SHF_EXCLUDE)
2796 flags |= SEC_EXCLUDE;
2797
2798 return flags;
2799}
2800#endif /* OBJ_ELF */
2801
2802
2803
2804/* Pseudo-op handling. */
2805
2806/* The .byte pseudo-op. This is similar to the normal .byte
2807 pseudo-op, but it can also take a single ASCII string. */
2808
2809static void
2810ppc_byte (ignore)
2811 int ignore ATTRIBUTE_UNUSED;
2812{
2813 if (*input_line_pointer != '\"')
2814 {
2815 cons (1);
2816 return;
2817 }
2818
2819 /* Gather characters. A real double quote is doubled. Unusual
2820 characters are not permitted. */
2821 ++input_line_pointer;
2822 while (1)
2823 {
2824 char c;
2825
2826 c = *input_line_pointer++;
2827
2828 if (c == '\"')
2829 {
2830 if (*input_line_pointer != '\"')
2831 break;
2832 ++input_line_pointer;
2833 }
2834
2835 FRAG_APPEND_1_CHAR (c);
2836 }
2837
2838 demand_empty_rest_of_line ();
2839}
2840
2841
2842#ifdef OBJ_XCOFF
2843
2844/* XCOFF specific pseudo-op handling. */
2845
2846/* This is set if we are creating a .stabx symbol, since we don't want
2847 to handle symbol suffixes for such symbols. */
2848static bfd_boolean ppc_stab_symbol;
2849
2850/* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
2851 symbols in the .bss segment as though they were local common
2852 symbols, and uses a different smclas. The native Aix 4.3.3 assember
2853 aligns .comm and .lcomm to 4 bytes. */
2854
2855static void
2856ppc_comm (lcomm)
2857 int lcomm;
2858{
2859 asection *current_seg = now_seg;
2860 subsegT current_subseg = now_subseg;
2861 char *name;
2862 char endc;
2863 char *end_name;
2864 offsetT size;
2865 offsetT align;
2866 symbolS *lcomm_sym = NULL;
2867 symbolS *sym;
2868 char *pfrag;
2869
2870 name = input_line_pointer;
2871 endc = get_symbol_end ();
2872 end_name = input_line_pointer;
2873 *end_name = endc;
2874
2875 if (*input_line_pointer != ',')
2876 {
2877 as_bad (_("missing size"));
2878 ignore_rest_of_line ();
2879 return;
2880 }
2881 ++input_line_pointer;
2882
2883 size = get_absolute_expression ();
2884 if (size < 0)
2885 {
2886 as_bad (_("negative size"));
2887 ignore_rest_of_line ();
2888 return;
2889 }
2890
2891 if (! lcomm)
2892 {
2893 /* The third argument to .comm is the alignment. */
2894 if (*input_line_pointer != ',')
2895 align = 2;
2896 else
2897 {
2898 ++input_line_pointer;
2899 align = get_absolute_expression ();
2900 if (align <= 0)
2901 {
2902 as_warn (_("ignoring bad alignment"));
2903 align = 2;
2904 }
2905 }
2906 }
2907 else
2908 {
2909 char *lcomm_name;
2910 char lcomm_endc;
2911
2912 if (size <= 4)
2913 align = 2;
2914 else
2915 align = 3;
2916
2917 /* The third argument to .lcomm appears to be the real local
2918 common symbol to create. References to the symbol named in
2919 the first argument are turned into references to the third
2920 argument. */
2921 if (*input_line_pointer != ',')
2922 {
2923 as_bad (_("missing real symbol name"));
2924 ignore_rest_of_line ();
2925 return;
2926 }
2927 ++input_line_pointer;
2928
2929 lcomm_name = input_line_pointer;
2930 lcomm_endc = get_symbol_end ();
2931
2932 lcomm_sym = symbol_find_or_make (lcomm_name);
2933
2934 *input_line_pointer = lcomm_endc;
2935 }
2936
2937 *end_name = '\0';
2938 sym = symbol_find_or_make (name);
2939 *end_name = endc;
2940
2941 if (S_IS_DEFINED (sym)
2942 || S_GET_VALUE (sym) != 0)
2943 {
2944 as_bad (_("attempt to redefine symbol"));
2945 ignore_rest_of_line ();
2946 return;
2947 }
2948
2949 record_alignment (bss_section, align);
2950
2951 if (! lcomm
2952 || ! S_IS_DEFINED (lcomm_sym))
2953 {
2954 symbolS *def_sym;
2955 offsetT def_size;
2956
2957 if (! lcomm)
2958 {
2959 def_sym = sym;
2960 def_size = size;
2961 S_SET_EXTERNAL (sym);
2962 }
2963 else
2964 {
2965 symbol_get_tc (lcomm_sym)->output = 1;
2966 def_sym = lcomm_sym;
2967 def_size = 0;
2968 }
2969
2970 subseg_set (bss_section, 1);
2971 frag_align (align, 0, 0);
2972
2973 symbol_set_frag (def_sym, frag_now);
2974 pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym,
2975 def_size, (char *) NULL);
2976 *pfrag = 0;
2977 S_SET_SEGMENT (def_sym, bss_section);
2978 symbol_get_tc (def_sym)->align = align;
2979 }
2980 else if (lcomm)
2981 {
2982 /* Align the size of lcomm_sym. */
2983 symbol_get_frag (lcomm_sym)->fr_offset =
2984 ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1)
2985 &~ ((1 << align) - 1));
2986 if (align > symbol_get_tc (lcomm_sym)->align)
2987 symbol_get_tc (lcomm_sym)->align = align;
2988 }
2989
2990 if (lcomm)
2991 {
2992 /* Make sym an offset from lcomm_sym. */
2993 S_SET_SEGMENT (sym, bss_section);
2994 symbol_set_frag (sym, symbol_get_frag (lcomm_sym));
2995 S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset);
2996 symbol_get_frag (lcomm_sym)->fr_offset += size;
2997 }
2998
2999 subseg_set (current_seg, current_subseg);
3000
3001 demand_empty_rest_of_line ();
3002}
3003
3004/* The .csect pseudo-op. This switches us into a different
3005 subsegment. The first argument is a symbol whose value is the
3006 start of the .csect. In COFF, csect symbols get special aux
3007 entries defined by the x_csect field of union internal_auxent. The
3008 optional second argument is the alignment (the default is 2). */
3009
3010static void
3011ppc_csect (ignore)
3012 int ignore ATTRIBUTE_UNUSED;
3013{
3014 char *name;
3015 char endc;
3016 symbolS *sym;
3017
3018 name = input_line_pointer;
3019 endc = get_symbol_end ();
3020
3021 sym = symbol_find_or_make (name);
3022
3023 *input_line_pointer = endc;
3024
3025 if (S_GET_NAME (sym)[0] == '\0')
3026 {
3027 /* An unnamed csect is assumed to be [PR]. */
3028 symbol_get_tc (sym)->class = XMC_PR;
3029 }
3030
3031 ppc_change_csect (sym);
3032
3033 if (*input_line_pointer == ',')
3034 {
3035 ++input_line_pointer;
3036 symbol_get_tc (sym)->align = get_absolute_expression ();
3037 }
3038
3039 demand_empty_rest_of_line ();
3040}
3041
3042/* Change to a different csect. */
3043
3044static void
3045ppc_change_csect (sym)
3046 symbolS *sym;
3047{
3048 if (S_IS_DEFINED (sym))
3049 subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg);
3050 else
3051 {
3052 symbolS **list_ptr;
3053 int after_toc;
3054 int hold_chunksize;
3055 symbolS *list;
3056
3057 /* This is a new csect. We need to look at the symbol class to
3058 figure out whether it should go in the text section or the
3059 data section. */
3060 after_toc = 0;
3061 switch (symbol_get_tc (sym)->class)
3062 {
3063 case XMC_PR:
3064 case XMC_RO:
3065 case XMC_DB:
3066 case XMC_GL:
3067 case XMC_XO:
3068 case XMC_SV:
3069 case XMC_TI:
3070 case XMC_TB:
3071 S_SET_SEGMENT (sym, text_section);
3072 symbol_get_tc (sym)->subseg = ppc_text_subsegment;
3073 ++ppc_text_subsegment;
3074 list_ptr = &ppc_text_csects;
3075 break;
3076 case XMC_RW:
3077 case XMC_TC0:
3078 case XMC_TC:
3079 case XMC_DS:
3080 case XMC_UA:
3081 case XMC_BS:
3082 case XMC_UC:
3083 if (ppc_toc_csect != NULL
3084 && (symbol_get_tc (ppc_toc_csect)->subseg + 1
3085 == ppc_data_subsegment))
3086 after_toc = 1;
3087 S_SET_SEGMENT (sym, data_section);
3088 symbol_get_tc (sym)->subseg = ppc_data_subsegment;
3089 ++ppc_data_subsegment;
3090 list_ptr = &ppc_data_csects;
3091 break;
3092 default:
3093 abort ();
3094 }
3095
3096 /* We set the obstack chunk size to a small value before
3097 changing subsegments, so that we don't use a lot of memory
3098 space for what may be a small section. */
3099 hold_chunksize = chunksize;
3100 chunksize = 64;
3101
3102 subseg_new (segment_name (S_GET_SEGMENT (sym)),
3103 symbol_get_tc (sym)->subseg);
3104
3105 chunksize = hold_chunksize;
3106
3107 if (after_toc)
3108 ppc_after_toc_frag = frag_now;
3109
3110 symbol_set_frag (sym, frag_now);
3111 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3112
3113 symbol_get_tc (sym)->align = 2;
3114 symbol_get_tc (sym)->output = 1;
3115 symbol_get_tc (sym)->within = sym;
3116
3117 for (list = *list_ptr;
3118 symbol_get_tc (list)->next != (symbolS *) NULL;
3119 list = symbol_get_tc (list)->next)
3120 ;
3121 symbol_get_tc (list)->next = sym;
3122
3123 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3124 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3125 &symbol_lastP);
3126 }
3127
3128 ppc_current_csect = sym;
3129}
3130
3131/* This function handles the .text and .data pseudo-ops. These
3132 pseudo-ops aren't really used by XCOFF; we implement them for the
3133 convenience of people who aren't used to XCOFF. */
3134
3135static void
3136ppc_section (type)
3137 int type;
3138{
3139 const char *name;
3140 symbolS *sym;
3141
3142 if (type == 't')
3143 name = ".text[PR]";
3144 else if (type == 'd')
3145 name = ".data[RW]";
3146 else
3147 abort ();
3148
3149 sym = symbol_find_or_make (name);
3150
3151 ppc_change_csect (sym);
3152
3153 demand_empty_rest_of_line ();
3154}
3155
3156/* This function handles the .section pseudo-op. This is mostly to
3157 give an error, since XCOFF only supports .text, .data and .bss, but
3158 we do permit the user to name the text or data section. */
3159
3160static void
3161ppc_named_section (ignore)
3162 int ignore ATTRIBUTE_UNUSED;
3163{
3164 char *user_name;
3165 const char *real_name;
3166 char c;
3167 symbolS *sym;
3168
3169 user_name = input_line_pointer;
3170 c = get_symbol_end ();
3171
3172 if (strcmp (user_name, ".text") == 0)
3173 real_name = ".text[PR]";
3174 else if (strcmp (user_name, ".data") == 0)
3175 real_name = ".data[RW]";
3176 else
3177 {
3178 as_bad (_("The XCOFF file format does not support arbitrary sections"));
3179 *input_line_pointer = c;
3180 ignore_rest_of_line ();
3181 return;
3182 }
3183
3184 *input_line_pointer = c;
3185
3186 sym = symbol_find_or_make (real_name);
3187
3188 ppc_change_csect (sym);
3189
3190 demand_empty_rest_of_line ();
3191}
3192
3193/* The .extern pseudo-op. We create an undefined symbol. */
3194
3195static void
3196ppc_extern (ignore)
3197 int ignore ATTRIBUTE_UNUSED;
3198{
3199 char *name;
3200 char endc;
3201
3202 name = input_line_pointer;
3203 endc = get_symbol_end ();
3204
3205 (void) symbol_find_or_make (name);
3206
3207 *input_line_pointer = endc;
3208
3209 demand_empty_rest_of_line ();
3210}
3211
3212/* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
3213
3214static void
3215ppc_lglobl (ignore)
3216 int ignore ATTRIBUTE_UNUSED;
3217{
3218 char *name;
3219 char endc;
3220 symbolS *sym;
3221
3222 name = input_line_pointer;
3223 endc = get_symbol_end ();
3224
3225 sym = symbol_find_or_make (name);
3226
3227 *input_line_pointer = endc;
3228
3229 symbol_get_tc (sym)->output = 1;
3230
3231 demand_empty_rest_of_line ();
3232}
3233
3234/* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
3235 although I don't know why it bothers. */
3236
3237static void
3238ppc_rename (ignore)
3239 int ignore ATTRIBUTE_UNUSED;
3240{
3241 char *name;
3242 char endc;
3243 symbolS *sym;
3244 int len;
3245
3246 name = input_line_pointer;
3247 endc = get_symbol_end ();
3248
3249 sym = symbol_find_or_make (name);
3250
3251 *input_line_pointer = endc;
3252
3253 if (*input_line_pointer != ',')
3254 {
3255 as_bad (_("missing rename string"));
3256 ignore_rest_of_line ();
3257 return;
3258 }
3259 ++input_line_pointer;
3260
3261 symbol_get_tc (sym)->real_name = demand_copy_C_string (&len);
3262
3263 demand_empty_rest_of_line ();
3264}
3265
3266/* The .stabx pseudo-op. This is similar to a normal .stabs
3267 pseudo-op, but slightly different. A sample is
3268 .stabx "main:F-1",.main,142,0
3269 The first argument is the symbol name to create. The second is the
3270 value, and the third is the storage class. The fourth seems to be
3271 always zero, and I am assuming it is the type. */
3272
3273static void
3274ppc_stabx (ignore)
3275 int ignore ATTRIBUTE_UNUSED;
3276{
3277 char *name;
3278 int len;
3279 symbolS *sym;
3280 expressionS exp;
3281
3282 name = demand_copy_C_string (&len);
3283
3284 if (*input_line_pointer != ',')
3285 {
3286 as_bad (_("missing value"));
3287 return;
3288 }
3289 ++input_line_pointer;
3290
3291 ppc_stab_symbol = TRUE;
3292 sym = symbol_make (name);
3293 ppc_stab_symbol = FALSE;
3294
3295 symbol_get_tc (sym)->real_name = name;
3296
3297 (void) expression (&exp);
3298
3299 switch (exp.X_op)
3300 {
3301 case O_illegal:
3302 case O_absent:
3303 case O_big:
3304 as_bad (_("illegal .stabx expression; zero assumed"));
3305 exp.X_add_number = 0;
3306 /* Fall through. */
3307 case O_constant:
3308 S_SET_VALUE (sym, (valueT) exp.X_add_number);
3309 symbol_set_frag (sym, &zero_address_frag);
3310 break;
3311
3312 case O_symbol:
3313 if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section)
3314 symbol_set_value_expression (sym, &exp);
3315 else
3316 {
3317 S_SET_VALUE (sym,
3318 exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
3319 symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol));
3320 }
3321 break;
3322
3323 default:
3324 /* The value is some complex expression. This will probably
3325 fail at some later point, but this is probably the right
3326 thing to do here. */
3327 symbol_set_value_expression (sym, &exp);
3328 break;
3329 }
3330
3331 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3332 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3333
3334 if (*input_line_pointer != ',')
3335 {
3336 as_bad (_("missing class"));
3337 return;
3338 }
3339 ++input_line_pointer;
3340
3341 S_SET_STORAGE_CLASS (sym, get_absolute_expression ());
3342
3343 if (*input_line_pointer != ',')
3344 {
3345 as_bad (_("missing type"));
3346 return;
3347 }
3348 ++input_line_pointer;
3349
3350 S_SET_DATA_TYPE (sym, get_absolute_expression ());
3351
3352 symbol_get_tc (sym)->output = 1;
3353
3354 if (S_GET_STORAGE_CLASS (sym) == C_STSYM) {
3355
3356 symbol_get_tc (sym)->within = ppc_current_block;
3357
3358 /* In this case :
3359
3360 .bs name
3361 .stabx "z",arrays_,133,0
3362 .es
3363
3364 .comm arrays_,13768,3
3365
3366 resolve_symbol_value will copy the exp's "within" into sym's when the
3367 offset is 0. Since this seems to be corner case problem,
3368 only do the correction for storage class C_STSYM. A better solution
3369 would be to have the tc field updated in ppc_symbol_new_hook. */
3370
3371 if (exp.X_op == O_symbol)
3372 {
3373 symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block;
3374 }
3375 }
3376
3377 if (exp.X_op != O_symbol
3378 || ! S_IS_EXTERNAL (exp.X_add_symbol)
3379 || S_GET_SEGMENT (exp.X_add_symbol) != bss_section)
3380 ppc_frob_label (sym);
3381 else
3382 {
3383 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3384 symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP);
3385 if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol)
3386 symbol_get_tc (ppc_current_csect)->within = sym;
3387 }
3388
3389 demand_empty_rest_of_line ();
3390}
3391
3392/* The .function pseudo-op. This takes several arguments. The first
3393 argument seems to be the external name of the symbol. The second
3394 argment seems to be the label for the start of the function. gcc
3395 uses the same name for both. I have no idea what the third and
3396 fourth arguments are meant to be. The optional fifth argument is
3397 an expression for the size of the function. In COFF this symbol
3398 gets an aux entry like that used for a csect. */
3399
3400static void
3401ppc_function (ignore)
3402 int ignore ATTRIBUTE_UNUSED;
3403{
3404 char *name;
3405 char endc;
3406 char *s;
3407 symbolS *ext_sym;
3408 symbolS *lab_sym;
3409
3410 name = input_line_pointer;
3411 endc = get_symbol_end ();
3412
3413 /* Ignore any [PR] suffix. */
3414 name = ppc_canonicalize_symbol_name (name);
3415 s = strchr (name, '[');
3416 if (s != (char *) NULL
3417 && strcmp (s + 1, "PR]") == 0)
3418 *s = '\0';
3419
3420 ext_sym = symbol_find_or_make (name);
3421
3422 *input_line_pointer = endc;
3423
3424 if (*input_line_pointer != ',')
3425 {
3426 as_bad (_("missing symbol name"));
3427 ignore_rest_of_line ();
3428 return;
3429 }
3430 ++input_line_pointer;
3431
3432 name = input_line_pointer;
3433 endc = get_symbol_end ();
3434
3435 lab_sym = symbol_find_or_make (name);
3436
3437 *input_line_pointer = endc;
3438
3439 if (ext_sym != lab_sym)
3440 {
3441 expressionS exp;
3442
3443 exp.X_op = O_symbol;
3444 exp.X_add_symbol = lab_sym;
3445 exp.X_op_symbol = NULL;
3446 exp.X_add_number = 0;
3447 exp.X_unsigned = 0;
3448 symbol_set_value_expression (ext_sym, &exp);
3449 }
3450
3451 if (symbol_get_tc (ext_sym)->class == -1)
3452 symbol_get_tc (ext_sym)->class = XMC_PR;
3453 symbol_get_tc (ext_sym)->output = 1;
3454
3455 if (*input_line_pointer == ',')
3456 {
3457 expressionS ignore;
3458
3459 /* Ignore the third argument. */
3460 ++input_line_pointer;
3461 expression (&ignore);
3462 if (*input_line_pointer == ',')
3463 {
3464 /* Ignore the fourth argument. */
3465 ++input_line_pointer;
3466 expression (&ignore);
3467 if (*input_line_pointer == ',')
3468 {
3469 /* The fifth argument is the function size. */
3470 ++input_line_pointer;
3471 symbol_get_tc (ext_sym)->size = symbol_new ("L0\001",
3472 absolute_section,
3473 (valueT) 0,
3474 &zero_address_frag);
3475 pseudo_set (symbol_get_tc (ext_sym)->size);
3476 }
3477 }
3478 }
3479
3480 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
3481 SF_SET_FUNCTION (ext_sym);
3482 SF_SET_PROCESS (ext_sym);
3483 coff_add_linesym (ext_sym);
3484
3485 demand_empty_rest_of_line ();
3486}
3487
3488/* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
3489 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
3490 with the correct line number */
3491
3492static symbolS *saved_bi_sym = 0;
3493
3494static void
3495ppc_bf (ignore)
3496 int ignore ATTRIBUTE_UNUSED;
3497{
3498 symbolS *sym;
3499
3500 sym = symbol_make (".bf");
3501 S_SET_SEGMENT (sym, text_section);
3502 symbol_set_frag (sym, frag_now);
3503 S_SET_VALUE (sym, frag_now_fix ());
3504 S_SET_STORAGE_CLASS (sym, C_FCN);
3505
3506 coff_line_base = get_absolute_expression ();
3507
3508 S_SET_NUMBER_AUXILIARY (sym, 1);
3509 SA_SET_SYM_LNNO (sym, coff_line_base);
3510
3511 /* Line number for bi. */
3512 if (saved_bi_sym)
3513 {
3514 S_SET_VALUE (saved_bi_sym, coff_n_line_nos);
3515 saved_bi_sym = 0;
3516 }
3517
3518
3519 symbol_get_tc (sym)->output = 1;
3520
3521 ppc_frob_label (sym);
3522
3523 demand_empty_rest_of_line ();
3524}
3525
3526/* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
3527 ".ef", except that the line number is absolute, not relative to the
3528 most recent ".bf" symbol. */
3529
3530static void
3531ppc_ef (ignore)
3532 int ignore ATTRIBUTE_UNUSED;
3533{
3534 symbolS *sym;
3535
3536 sym = symbol_make (".ef");
3537 S_SET_SEGMENT (sym, text_section);
3538 symbol_set_frag (sym, frag_now);
3539 S_SET_VALUE (sym, frag_now_fix ());
3540 S_SET_STORAGE_CLASS (sym, C_FCN);
3541 S_SET_NUMBER_AUXILIARY (sym, 1);
3542 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3543 symbol_get_tc (sym)->output = 1;
3544
3545 ppc_frob_label (sym);
3546
3547 demand_empty_rest_of_line ();
3548}
3549
3550/* The .bi and .ei pseudo-ops. These take a string argument and
3551 generates a C_BINCL or C_EINCL symbol, which goes at the start of
3552 the symbol list. The value of .bi will be know when the next .bf
3553 is encountered. */
3554
3555static void
3556ppc_biei (ei)
3557 int ei;
3558{
3559 static symbolS *last_biei;
3560
3561 char *name;
3562 int len;
3563 symbolS *sym;
3564 symbolS *look;
3565
3566 name = demand_copy_C_string (&len);
3567
3568 /* The value of these symbols is actually file offset. Here we set
3569 the value to the index into the line number entries. In
3570 ppc_frob_symbols we set the fix_line field, which will cause BFD
3571 to do the right thing. */
3572
3573 sym = symbol_make (name);
3574 /* obj-coff.c currently only handles line numbers correctly in the
3575 .text section. */
3576 S_SET_SEGMENT (sym, text_section);
3577 S_SET_VALUE (sym, coff_n_line_nos);
3578 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3579
3580 S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL);
3581 symbol_get_tc (sym)->output = 1;
3582
3583 /* Save bi. */
3584 if (ei)
3585 saved_bi_sym = 0;
3586 else
3587 saved_bi_sym = sym;
3588
3589 for (look = last_biei ? last_biei : symbol_rootP;
3590 (look != (symbolS *) NULL
3591 && (S_GET_STORAGE_CLASS (look) == C_FILE
3592 || S_GET_STORAGE_CLASS (look) == C_BINCL
3593 || S_GET_STORAGE_CLASS (look) == C_EINCL));
3594 look = symbol_next (look))
3595 ;
3596 if (look != (symbolS *) NULL)
3597 {
3598 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3599 symbol_insert (sym, look, &symbol_rootP, &symbol_lastP);
3600 last_biei = sym;
3601 }
3602
3603 demand_empty_rest_of_line ();
3604}
3605
3606/* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
3607 There is one argument, which is a csect symbol. The value of the
3608 .bs symbol is the index of this csect symbol. */
3609
3610static void
3611ppc_bs (ignore)
3612 int ignore ATTRIBUTE_UNUSED;
3613{
3614 char *name;
3615 char endc;
3616 symbolS *csect;
3617 symbolS *sym;
3618
3619 if (ppc_current_block != NULL)
3620 as_bad (_("nested .bs blocks"));
3621
3622 name = input_line_pointer;
3623 endc = get_symbol_end ();
3624
3625 csect = symbol_find_or_make (name);
3626
3627 *input_line_pointer = endc;
3628
3629 sym = symbol_make (".bs");
3630 S_SET_SEGMENT (sym, now_seg);
3631 S_SET_STORAGE_CLASS (sym, C_BSTAT);
3632 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3633 symbol_get_tc (sym)->output = 1;
3634
3635 symbol_get_tc (sym)->within = csect;
3636
3637 ppc_frob_label (sym);
3638
3639 ppc_current_block = sym;
3640
3641 demand_empty_rest_of_line ();
3642}
3643
3644/* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
3645
3646static void
3647ppc_es (ignore)
3648 int ignore ATTRIBUTE_UNUSED;
3649{
3650 symbolS *sym;
3651
3652 if (ppc_current_block == NULL)
3653 as_bad (_(".es without preceding .bs"));
3654
3655 sym = symbol_make (".es");
3656 S_SET_SEGMENT (sym, now_seg);
3657 S_SET_STORAGE_CLASS (sym, C_ESTAT);
3658 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3659 symbol_get_tc (sym)->output = 1;
3660
3661 ppc_frob_label (sym);
3662
3663 ppc_current_block = NULL;
3664
3665 demand_empty_rest_of_line ();
3666}
3667
3668/* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
3669 line number. */
3670
3671static void
3672ppc_bb (ignore)
3673 int ignore ATTRIBUTE_UNUSED;
3674{
3675 symbolS *sym;
3676
3677 sym = symbol_make (".bb");
3678 S_SET_SEGMENT (sym, text_section);
3679 symbol_set_frag (sym, frag_now);
3680 S_SET_VALUE (sym, frag_now_fix ());
3681 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3682
3683 S_SET_NUMBER_AUXILIARY (sym, 1);
3684 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3685
3686 symbol_get_tc (sym)->output = 1;
3687
3688 SF_SET_PROCESS (sym);
3689
3690 ppc_frob_label (sym);
3691
3692 demand_empty_rest_of_line ();
3693}
3694
3695/* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
3696 line number. */
3697
3698static void
3699ppc_eb (ignore)
3700 int ignore ATTRIBUTE_UNUSED;
3701{
3702 symbolS *sym;
3703
3704 sym = symbol_make (".eb");
3705 S_SET_SEGMENT (sym, text_section);
3706 symbol_set_frag (sym, frag_now);
3707 S_SET_VALUE (sym, frag_now_fix ());
3708 S_SET_STORAGE_CLASS (sym, C_BLOCK);
3709 S_SET_NUMBER_AUXILIARY (sym, 1);
3710 SA_SET_SYM_LNNO (sym, get_absolute_expression ());
3711 symbol_get_tc (sym)->output = 1;
3712
3713 SF_SET_PROCESS (sym);
3714
3715 ppc_frob_label (sym);
3716
3717 demand_empty_rest_of_line ();
3718}
3719
3720/* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
3721 specified name. */
3722
3723static void
3724ppc_bc (ignore)
3725 int ignore ATTRIBUTE_UNUSED;
3726{
3727 char *name;
3728 int len;
3729 symbolS *sym;
3730
3731 name = demand_copy_C_string (&len);
3732 sym = symbol_make (name);
3733 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3734 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3735 S_SET_STORAGE_CLASS (sym, C_BCOMM);
3736 S_SET_VALUE (sym, 0);
3737 symbol_get_tc (sym)->output = 1;
3738
3739 ppc_frob_label (sym);
3740
3741 demand_empty_rest_of_line ();
3742}
3743
3744/* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
3745
3746static void
3747ppc_ec (ignore)
3748 int ignore ATTRIBUTE_UNUSED;
3749{
3750 symbolS *sym;
3751
3752 sym = symbol_make (".ec");
3753 S_SET_SEGMENT (sym, ppc_coff_debug_section);
3754 symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING;
3755 S_SET_STORAGE_CLASS (sym, C_ECOMM);
3756 S_SET_VALUE (sym, 0);
3757 symbol_get_tc (sym)->output = 1;
3758
3759 ppc_frob_label (sym);
3760
3761 demand_empty_rest_of_line ();
3762}
3763
3764/* The .toc pseudo-op. Switch to the .toc subsegment. */
3765
3766static void
3767ppc_toc (ignore)
3768 int ignore ATTRIBUTE_UNUSED;
3769{
3770 if (ppc_toc_csect != (symbolS *) NULL)
3771 subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg);
3772 else
3773 {
3774 subsegT subseg;
3775 symbolS *sym;
3776 symbolS *list;
3777
3778 subseg = ppc_data_subsegment;
3779 ++ppc_data_subsegment;
3780
3781 subseg_new (segment_name (data_section), subseg);
3782 ppc_toc_frag = frag_now;
3783
3784 sym = symbol_find_or_make ("TOC[TC0]");
3785 symbol_set_frag (sym, frag_now);
3786 S_SET_SEGMENT (sym, data_section);
3787 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3788 symbol_get_tc (sym)->subseg = subseg;
3789 symbol_get_tc (sym)->output = 1;
3790 symbol_get_tc (sym)->within = sym;
3791
3792 ppc_toc_csect = sym;
3793
3794 for (list = ppc_data_csects;
3795 symbol_get_tc (list)->next != (symbolS *) NULL;
3796 list = symbol_get_tc (list)->next)
3797 ;
3798 symbol_get_tc (list)->next = sym;
3799
3800 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
3801 symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP,
3802 &symbol_lastP);
3803 }
3804
3805 ppc_current_csect = ppc_toc_csect;
3806
3807 demand_empty_rest_of_line ();
3808}
3809
3810/* The AIX assembler automatically aligns the operands of a .long or
3811 .short pseudo-op, and we want to be compatible. */
3812
3813static void
3814ppc_xcoff_cons (log_size)
3815 int log_size;
3816{
3817 frag_align (log_size, 0, 0);
3818 record_alignment (now_seg, log_size);
3819 cons (1 << log_size);
3820}
3821
3822static void
3823ppc_vbyte (dummy)
3824 int dummy ATTRIBUTE_UNUSED;
3825{
3826 expressionS exp;
3827 int byte_count;
3828
3829 (void) expression (&exp);
3830
3831 if (exp.X_op != O_constant)
3832 {
3833 as_bad (_("non-constant byte count"));
3834 return;
3835 }
3836
3837 byte_count = exp.X_add_number;
3838
3839 if (*input_line_pointer != ',')
3840 {
3841 as_bad (_("missing value"));
3842 return;
3843 }
3844
3845 ++input_line_pointer;
3846 cons (byte_count);
3847}
3848
3849#endif /* OBJ_XCOFF */
3850#if defined (OBJ_XCOFF) || defined (OBJ_ELF)
3851
3852
3853/* The .tc pseudo-op. This is used when generating either XCOFF or
3854 ELF. This takes two or more arguments.
3855
3856 When generating XCOFF output, the first argument is the name to
3857 give to this location in the toc; this will be a symbol with class
3858 TC. The rest of the arguments are N-byte values to actually put at
3859 this location in the TOC; often there is just one more argument, a
3860 relocateable symbol reference. The size of the value to store
3861 depends on target word size. A 32-bit target uses 4-byte values, a
3862 64-bit target uses 8-byte values.
3863
3864 When not generating XCOFF output, the arguments are the same, but
3865 the first argument is simply ignored. */
3866
3867static void
3868ppc_tc (ignore)
3869 int ignore ATTRIBUTE_UNUSED;
3870{
3871#ifdef OBJ_XCOFF
3872
3873 /* Define the TOC symbol name. */
3874 {
3875 char *name;
3876 char endc;
3877 symbolS *sym;
3878
3879 if (ppc_toc_csect == (symbolS *) NULL
3880 || ppc_toc_csect != ppc_current_csect)
3881 {
3882 as_bad (_(".tc not in .toc section"));
3883 ignore_rest_of_line ();
3884 return;
3885 }
3886
3887 name = input_line_pointer;
3888 endc = get_symbol_end ();
3889
3890 sym = symbol_find_or_make (name);
3891
3892 *input_line_pointer = endc;
3893
3894 if (S_IS_DEFINED (sym))
3895 {
3896 symbolS *label;
3897
3898 label = symbol_get_tc (ppc_current_csect)->within;
3899 if (symbol_get_tc (label)->class != XMC_TC0)
3900 {
3901 as_bad (_(".tc with no label"));
3902 ignore_rest_of_line ();
3903 return;
3904 }
3905
3906 S_SET_SEGMENT (label, S_GET_SEGMENT (sym));
3907 symbol_set_frag (label, symbol_get_frag (sym));
3908 S_SET_VALUE (label, S_GET_VALUE (sym));
3909
3910 while (! is_end_of_line[(unsigned char) *input_line_pointer])
3911 ++input_line_pointer;
3912
3913 return;
3914 }
3915
3916 S_SET_SEGMENT (sym, now_seg);
3917 symbol_set_frag (sym, frag_now);
3918 S_SET_VALUE (sym, (valueT) frag_now_fix ());
3919 symbol_get_tc (sym)->class = XMC_TC;
3920 symbol_get_tc (sym)->output = 1;
3921
3922 ppc_frob_label (sym);
3923 }
3924
3925#endif /* OBJ_XCOFF */
3926#ifdef OBJ_ELF
3927 int align;
3928
3929 /* Skip the TOC symbol name. */
3930 while (is_part_of_name (*input_line_pointer)
3931 || *input_line_pointer == '['
3932 || *input_line_pointer == ']'
3933 || *input_line_pointer == '{'
3934 || *input_line_pointer == '}')
3935 ++input_line_pointer;
3936
3937 /* Align to a four/eight byte boundary. */
3938 align = ppc_obj64 ? 3 : 2;
3939 frag_align (align, 0, 0);
3940 record_alignment (now_seg, align);
3941#endif /* OBJ_ELF */
3942
3943 if (*input_line_pointer != ',')
3944 demand_empty_rest_of_line ();
3945 else
3946 {
3947 ++input_line_pointer;
3948 cons (ppc_obj64 ? 8 : 4);
3949 }
3950}
3951
3952/* Pseudo-op .machine. */
3953/* FIXME: `.machine' is a nop for the moment. It would be nice to
3954 accept this directive on the first line of input and set ppc_obj64
3955 and the target format accordingly. Unfortunately, the target
3956 format is selected in output-file.c:output_file_create before we
3957 even get to md_begin, so it's not possible without changing
3958 as.c:main. */
3959
3960static void
3961ppc_machine (ignore)
3962 int ignore ATTRIBUTE_UNUSED;
3963{
3964 discard_rest_of_line ();
3965}
3966
3967/* See whether a symbol is in the TOC section. */
3968
3969static int
3970ppc_is_toc_sym (sym)
3971 symbolS *sym;
3972{
3973#ifdef OBJ_XCOFF
3974 return symbol_get_tc (sym)->class == XMC_TC;
3975#endif
3976#ifdef OBJ_ELF
3977 const char *sname = segment_name (S_GET_SEGMENT (sym));
3978 if (ppc_obj64)
3979 return strcmp (sname, ".toc") == 0;
3980 else
3981 return strcmp (sname, ".got") == 0;
3982#endif
3983}
3984#endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
3985
3986
3987#ifdef TE_PE
3988
3989/* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
3990
3991/* Set the current section. */
3992static void
3993ppc_set_current_section (new)
3994 segT new;
3995{
3996 ppc_previous_section = ppc_current_section;
3997 ppc_current_section = new;
3998}
3999
4000/* pseudo-op: .previous
4001 behaviour: toggles the current section with the previous section.
4002 errors: None
4003 warnings: "No previous section" */
4004
4005static void
4006ppc_previous (ignore)
4007 int ignore ATTRIBUTE_UNUSED;
4008{
4009 symbolS *tmp;
4010
4011 if (ppc_previous_section == NULL)
4012 {
4013 as_warn (_("No previous section to return to. Directive ignored."));
4014 return;
4015 }
4016
4017 subseg_set (ppc_previous_section, 0);
4018
4019 ppc_set_current_section (ppc_previous_section);
4020}
4021
4022/* pseudo-op: .pdata
4023 behaviour: predefined read only data section
4024 double word aligned
4025 errors: None
4026 warnings: None
4027 initial: .section .pdata "adr3"
4028 a - don't know -- maybe a misprint
4029 d - initialized data
4030 r - readable
4031 3 - double word aligned (that would be 4 byte boundary)
4032
4033 commentary:
4034 Tag index tables (also known as the function table) for exception
4035 handling, debugging, etc. */
4036
4037static void
4038ppc_pdata (ignore)
4039 int ignore ATTRIBUTE_UNUSED;
4040{
4041 if (pdata_section == 0)
4042 {
4043 pdata_section = subseg_new (".pdata", 0);
4044
4045 bfd_set_section_flags (stdoutput, pdata_section,
4046 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4047 | SEC_READONLY | SEC_DATA ));
4048
4049 bfd_set_section_alignment (stdoutput, pdata_section, 2);
4050 }
4051 else
4052 {
4053 pdata_section = subseg_new (".pdata", 0);
4054 }
4055 ppc_set_current_section (pdata_section);
4056}
4057
4058/* pseudo-op: .ydata
4059 behaviour: predefined read only data section
4060 double word aligned
4061 errors: None
4062 warnings: None
4063 initial: .section .ydata "drw3"
4064 a - don't know -- maybe a misprint
4065 d - initialized data
4066 r - readable
4067 3 - double word aligned (that would be 4 byte boundary)
4068 commentary:
4069 Tag tables (also known as the scope table) for exception handling,
4070 debugging, etc. */
4071
4072static void
4073ppc_ydata (ignore)
4074 int ignore ATTRIBUTE_UNUSED;
4075{
4076 if (ydata_section == 0)
4077 {
4078 ydata_section = subseg_new (".ydata", 0);
4079 bfd_set_section_flags (stdoutput, ydata_section,
4080 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4081 | SEC_READONLY | SEC_DATA ));
4082
4083 bfd_set_section_alignment (stdoutput, ydata_section, 3);
4084 }
4085 else
4086 {
4087 ydata_section = subseg_new (".ydata", 0);
4088 }
4089 ppc_set_current_section (ydata_section);
4090}
4091
4092/* pseudo-op: .reldata
4093 behaviour: predefined read write data section
4094 double word aligned (4-byte)
4095 FIXME: relocation is applied to it
4096 FIXME: what's the difference between this and .data?
4097 errors: None
4098 warnings: None
4099 initial: .section .reldata "drw3"
4100 d - initialized data
4101 r - readable
4102 w - writeable
4103 3 - double word aligned (that would be 8 byte boundary)
4104
4105 commentary:
4106 Like .data, but intended to hold data subject to relocation, such as
4107 function descriptors, etc. */
4108
4109static void
4110ppc_reldata (ignore)
4111 int ignore ATTRIBUTE_UNUSED;
4112{
4113 if (reldata_section == 0)
4114 {
4115 reldata_section = subseg_new (".reldata", 0);
4116
4117 bfd_set_section_flags (stdoutput, reldata_section,
4118 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4119 | SEC_DATA));
4120
4121 bfd_set_section_alignment (stdoutput, reldata_section, 2);
4122 }
4123 else
4124 {
4125 reldata_section = subseg_new (".reldata", 0);
4126 }
4127 ppc_set_current_section (reldata_section);
4128}
4129
4130/* pseudo-op: .rdata
4131 behaviour: predefined read only data section
4132 double word aligned
4133 errors: None
4134 warnings: None
4135 initial: .section .rdata "dr3"
4136 d - initialized data
4137 r - readable
4138 3 - double word aligned (that would be 4 byte boundary) */
4139
4140static void
4141ppc_rdata (ignore)
4142 int ignore ATTRIBUTE_UNUSED;
4143{
4144 if (rdata_section == 0)
4145 {
4146 rdata_section = subseg_new (".rdata", 0);
4147 bfd_set_section_flags (stdoutput, rdata_section,
4148 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4149 | SEC_READONLY | SEC_DATA ));
4150
4151 bfd_set_section_alignment (stdoutput, rdata_section, 2);
4152 }
4153 else
4154 {
4155 rdata_section = subseg_new (".rdata", 0);
4156 }
4157 ppc_set_current_section (rdata_section);
4158}
4159
4160/* pseudo-op: .ualong
4161 behaviour: much like .int, with the exception that no alignment is
4162 performed.
4163 FIXME: test the alignment statement
4164 errors: None
4165 warnings: None */
4166
4167static void
4168ppc_ualong (ignore)
4169 int ignore ATTRIBUTE_UNUSED;
4170{
4171 /* Try for long. */
4172 cons (4);
4173}
4174
4175/* pseudo-op: .znop <symbol name>
4176 behaviour: Issue a nop instruction
4177 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
4178 the supplied symbol name.
4179 errors: None
4180 warnings: Missing symbol name */
4181
4182static void
4183ppc_znop (ignore)
4184 int ignore ATTRIBUTE_UNUSED;
4185{
4186 unsigned long insn;
4187 const struct powerpc_opcode *opcode;
4188 expressionS ex;
4189 char *f;
4190 symbolS *sym;
4191 char *symbol_name;
4192 char c;
4193 char *name;
4194 unsigned int exp;
4195 flagword flags;
4196 asection *sec;
4197
4198 /* Strip out the symbol name. */
4199 symbol_name = input_line_pointer;
4200 c = get_symbol_end ();
4201
4202 name = xmalloc (input_line_pointer - symbol_name + 1);
4203 strcpy (name, symbol_name);
4204
4205 sym = symbol_find_or_make (name);
4206
4207 *input_line_pointer = c;
4208
4209 SKIP_WHITESPACE ();
4210
4211 /* Look up the opcode in the hash table. */
4212 opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop");
4213
4214 /* Stick in the nop. */
4215 insn = opcode->opcode;
4216
4217 /* Write out the instruction. */
4218 f = frag_more (4);
4219 md_number_to_chars (f, insn, 4);
4220 fix_new (frag_now,
4221 f - frag_now->fr_literal,
4222 4,
4223 sym,
4224 0,
4225 0,
4226 BFD_RELOC_16_GOT_PCREL);
4227
4228}
4229
4230/* pseudo-op:
4231 behaviour:
4232 errors:
4233 warnings: */
4234
4235static void
4236ppc_pe_comm (lcomm)
4237 int lcomm;
4238{
4239 register char *name;
4240 register char c;
4241 register char *p;
4242 offsetT temp;
4243 register symbolS *symbolP;
4244 offsetT align;
4245
4246 name = input_line_pointer;
4247 c = get_symbol_end ();
4248
4249 /* just after name is now '\0'. */
4250 p = input_line_pointer;
4251 *p = c;
4252 SKIP_WHITESPACE ();
4253 if (*input_line_pointer != ',')
4254 {
4255 as_bad (_("Expected comma after symbol-name: rest of line ignored."));
4256 ignore_rest_of_line ();
4257 return;
4258 }
4259
4260 input_line_pointer++; /* skip ',' */
4261 if ((temp = get_absolute_expression ()) < 0)
4262 {
4263 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp);
4264 ignore_rest_of_line ();
4265 return;
4266 }
4267
4268 if (! lcomm)
4269 {
4270 /* The third argument to .comm is the alignment. */
4271 if (*input_line_pointer != ',')
4272 align = 3;
4273 else
4274 {
4275 ++input_line_pointer;
4276 align = get_absolute_expression ();
4277 if (align <= 0)
4278 {
4279 as_warn (_("ignoring bad alignment"));
4280 align = 3;
4281 }
4282 }
4283 }
4284
4285 *p = 0;
4286 symbolP = symbol_find_or_make (name);
4287
4288 *p = c;
4289 if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP))
4290 {
4291 as_bad (_("Ignoring attempt to re-define symbol `%s'."),
4292 S_GET_NAME (symbolP));
4293 ignore_rest_of_line ();
4294 return;
4295 }
4296
4297 if (S_GET_VALUE (symbolP))
4298 {
4299 if (S_GET_VALUE (symbolP) != (valueT) temp)
4300 as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."),
4301 S_GET_NAME (symbolP),
4302 (long) S_GET_VALUE (symbolP),
4303 (long) temp);
4304 }
4305 else
4306 {
4307 S_SET_VALUE (symbolP, (valueT) temp);
4308 S_SET_EXTERNAL (symbolP);
4309 }
4310
4311 demand_empty_rest_of_line ();
4312}
4313
4314/*
4315 * implement the .section pseudo op:
4316 * .section name {, "flags"}
4317 * ^ ^
4318 * | +--- optional flags: 'b' for bss
4319 * | 'i' for info
4320 * +-- section name 'l' for lib
4321 * 'n' for noload
4322 * 'o' for over
4323 * 'w' for data
4324 * 'd' (apparently m88k for data)
4325 * 'x' for text
4326 * But if the argument is not a quoted string, treat it as a
4327 * subsegment number.
4328 *
4329 * FIXME: this is a copy of the section processing from obj-coff.c, with
4330 * additions/changes for the moto-pas assembler support. There are three
4331 * categories:
4332 *
4333 * FIXME: I just noticed this. This doesn't work at all really. It it
4334 * setting bits that bfd probably neither understands or uses. The
4335 * correct approach (?) will have to incorporate extra fields attached
4336 * to the section to hold the system specific stuff. (krk)
4337 *
4338 * Section Contents:
4339 * 'a' - unknown - referred to in documentation, but no definition supplied
4340 * 'c' - section has code
4341 * 'd' - section has initialized data
4342 * 'u' - section has uninitialized data
4343 * 'i' - section contains directives (info)
4344 * 'n' - section can be discarded
4345 * 'R' - remove section at link time
4346 *
4347 * Section Protection:
4348 * 'r' - section is readable
4349 * 'w' - section is writeable
4350 * 'x' - section is executable
4351 * 's' - section is sharable
4352 *
4353 * Section Alignment:
4354 * '0' - align to byte boundary
4355 * '1' - align to halfword undary
4356 * '2' - align to word boundary
4357 * '3' - align to doubleword boundary
4358 * '4' - align to quadword boundary
4359 * '5' - align to 32 byte boundary
4360 * '6' - align to 64 byte boundary
4361 *
4362 */
4363
4364void
4365ppc_pe_section (ignore)
4366 int ignore ATTRIBUTE_UNUSED;
4367{
4368 /* Strip out the section name. */
4369 char *section_name;
4370 char c;
4371 char *name;
4372 unsigned int exp;
4373 flagword flags;
4374 segT sec;
4375 int align;
4376
4377 section_name = input_line_pointer;
4378 c = get_symbol_end ();
4379
4380 name = xmalloc (input_line_pointer - section_name + 1);
4381 strcpy (name, section_name);
4382
4383 *input_line_pointer = c;
4384
4385 SKIP_WHITESPACE ();
4386
4387 exp = 0;
4388 flags = SEC_NO_FLAGS;
4389
4390 if (strcmp (name, ".idata$2") == 0)
4391 {
4392 align = 0;
4393 }
4394 else if (strcmp (name, ".idata$3") == 0)
4395 {
4396 align = 0;
4397 }
4398 else if (strcmp (name, ".idata$4") == 0)
4399 {
4400 align = 2;
4401 }
4402 else if (strcmp (name, ".idata$5") == 0)
4403 {
4404 align = 2;
4405 }
4406 else if (strcmp (name, ".idata$6") == 0)
4407 {
4408 align = 1;
4409 }
4410 else
4411 /* Default alignment to 16 byte boundary. */
4412 align = 4;
4413
4414 if (*input_line_pointer == ',')
4415 {
4416 ++input_line_pointer;
4417 SKIP_WHITESPACE ();
4418 if (*input_line_pointer != '"')
4419 exp = get_absolute_expression ();
4420 else
4421 {
4422 ++input_line_pointer;
4423 while (*input_line_pointer != '"'
4424 && ! is_end_of_line[(unsigned char) *input_line_pointer])
4425 {
4426 switch (*input_line_pointer)
4427 {
4428 /* Section Contents */
4429 case 'a': /* unknown */
4430 as_bad (_("Unsupported section attribute -- 'a'"));
4431 break;
4432 case 'c': /* code section */
4433 flags |= SEC_CODE;
4434 break;
4435 case 'd': /* section has initialized data */
4436 flags |= SEC_DATA;
4437 break;
4438 case 'u': /* section has uninitialized data */
4439 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
4440 in winnt.h */
4441 flags |= SEC_ROM;
4442 break;
4443 case 'i': /* section contains directives (info) */
4444 /* FIXME: This is IMAGE_SCN_LNK_INFO
4445 in winnt.h */
4446 flags |= SEC_HAS_CONTENTS;
4447 break;
4448 case 'n': /* section can be discarded */
4449 flags &=~ SEC_LOAD;
4450 break;
4451 case 'R': /* Remove section at link time */
4452 flags |= SEC_NEVER_LOAD;
4453 break;
4454
4455 /* Section Protection */
4456 case 'r': /* section is readable */
4457 flags |= IMAGE_SCN_MEM_READ;
4458 break;
4459 case 'w': /* section is writeable */
4460 flags |= IMAGE_SCN_MEM_WRITE;
4461 break;
4462 case 'x': /* section is executable */
4463 flags |= IMAGE_SCN_MEM_EXECUTE;
4464 break;
4465 case 's': /* section is sharable */
4466 flags |= IMAGE_SCN_MEM_SHARED;
4467 break;
4468
4469 /* Section Alignment */
4470 case '0': /* align to byte boundary */
4471 flags |= IMAGE_SCN_ALIGN_1BYTES;
4472 align = 0;
4473 break;
4474 case '1': /* align to halfword boundary */
4475 flags |= IMAGE_SCN_ALIGN_2BYTES;
4476 align = 1;
4477 break;
4478 case '2': /* align to word boundary */
4479 flags |= IMAGE_SCN_ALIGN_4BYTES;
4480 align = 2;
4481 break;
4482 case '3': /* align to doubleword boundary */
4483 flags |= IMAGE_SCN_ALIGN_8BYTES;
4484 align = 3;
4485 break;
4486 case '4': /* align to quadword boundary */
4487 flags |= IMAGE_SCN_ALIGN_16BYTES;
4488 align = 4;
4489 break;
4490 case '5': /* align to 32 byte boundary */
4491 flags |= IMAGE_SCN_ALIGN_32BYTES;
4492 align = 5;
4493 break;
4494 case '6': /* align to 64 byte boundary */
4495 flags |= IMAGE_SCN_ALIGN_64BYTES;
4496 align = 6;
4497 break;
4498
4499 default:
4500 as_bad (_("unknown section attribute '%c'"),
4501 *input_line_pointer);
4502 break;
4503 }
4504 ++input_line_pointer;
4505 }
4506 if (*input_line_pointer == '"')
4507 ++input_line_pointer;
4508 }
4509 }
4510
4511 sec = subseg_new (name, (subsegT) exp);
4512
4513 ppc_set_current_section (sec);
4514
4515 if (flags != SEC_NO_FLAGS)
4516 {
4517 if (! bfd_set_section_flags (stdoutput, sec, flags))
4518 as_bad (_("error setting flags for \"%s\": %s"),
4519 bfd_section_name (stdoutput, sec),
4520 bfd_errmsg (bfd_get_error ()));
4521 }
4522
4523 bfd_set_section_alignment (stdoutput, sec, align);
4524
4525}
4526
4527static void
4528ppc_pe_function (ignore)
4529 int ignore ATTRIBUTE_UNUSED;
4530{
4531 char *name;
4532 char endc;
4533 symbolS *ext_sym;
4534
4535 name = input_line_pointer;
4536 endc = get_symbol_end ();
4537
4538 ext_sym = symbol_find_or_make (name);
4539
4540 *input_line_pointer = endc;
4541
4542 S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT);
4543 SF_SET_FUNCTION (ext_sym);
4544 SF_SET_PROCESS (ext_sym);
4545 coff_add_linesym (ext_sym);
4546
4547 demand_empty_rest_of_line ();
4548}
4549
4550static void
4551ppc_pe_tocd (ignore)
4552 int ignore ATTRIBUTE_UNUSED;
4553{
4554 if (tocdata_section == 0)
4555 {
4556 tocdata_section = subseg_new (".tocd", 0);
4557 /* FIXME: section flags won't work. */
4558 bfd_set_section_flags (stdoutput, tocdata_section,
4559 (SEC_ALLOC | SEC_LOAD | SEC_RELOC
4560 | SEC_READONLY | SEC_DATA));
4561
4562 bfd_set_section_alignment (stdoutput, tocdata_section, 2);
4563 }
4564 else
4565 {
4566 rdata_section = subseg_new (".tocd", 0);
4567 }
4568
4569 ppc_set_current_section (tocdata_section);
4570
4571 demand_empty_rest_of_line ();
4572}
4573
4574/* Don't adjust TOC relocs to use the section symbol. */
4575
4576int
4577ppc_pe_fix_adjustable (fix)
4578 fixS *fix;
4579{
4580 return fix->fx_r_type != BFD_RELOC_PPC_TOC16;
4581}
4582
4583#endif
4584
4585
4586#ifdef OBJ_XCOFF
4587
4588/* XCOFF specific symbol and file handling. */
4589
4590/* Canonicalize the symbol name. We use the to force the suffix, if
4591 any, to use square brackets, and to be in upper case. */
4592
4593char *
4594ppc_canonicalize_symbol_name (name)
4595 char *name;
4596{
4597 char *s;
4598
4599 if (ppc_stab_symbol)
4600 return name;
4601
4602 for (s = name; *s != '\0' && *s != '{' && *s != '['; s++)
4603 ;
4604 if (*s != '\0')
4605 {
4606 char brac;
4607
4608 if (*s == '[')
4609 brac = ']';
4610 else
4611 {
4612 *s = '[';
4613 brac = '}';
4614 }
4615
4616 for (s++; *s != '\0' && *s != brac; s++)
4617 *s = TOUPPER (*s);
4618
4619 if (*s == '\0' || s[1] != '\0')
4620 as_bad (_("bad symbol suffix"));
4621
4622 *s = ']';
4623 }
4624
4625 return name;
4626}
4627
4628/* Set the class of a symbol based on the suffix, if any. This is
4629 called whenever a new symbol is created. */
4630
4631void
4632ppc_symbol_new_hook (sym)
4633 symbolS *sym;
4634{
4635 struct ppc_tc_sy *tc;
4636 const char *s;
4637
4638 tc = symbol_get_tc (sym);
4639 tc->next = NULL;
4640 tc->output = 0;
4641 tc->class = -1;
4642 tc->real_name = NULL;
4643 tc->subseg = 0;
4644 tc->align = 0;
4645 tc->size = NULL;
4646 tc->within = NULL;
4647
4648 if (ppc_stab_symbol)
4649 return;
4650
4651 s = strchr (S_GET_NAME (sym), '[');
4652 if (s == (const char *) NULL)
4653 {
4654 /* There is no suffix. */
4655 return;
4656 }
4657
4658 ++s;
4659
4660 switch (s[0])
4661 {
4662 case 'B':
4663 if (strcmp (s, "BS]") == 0)
4664 tc->class = XMC_BS;
4665 break;
4666 case 'D':
4667 if (strcmp (s, "DB]") == 0)
4668 tc->class = XMC_DB;
4669 else if (strcmp (s, "DS]") == 0)
4670 tc->class = XMC_DS;
4671 break;
4672 case 'G':
4673 if (strcmp (s, "GL]") == 0)
4674 tc->class = XMC_GL;
4675 break;
4676 case 'P':
4677 if (strcmp (s, "PR]") == 0)
4678 tc->class = XMC_PR;
4679 break;
4680 case 'R':
4681 if (strcmp (s, "RO]") == 0)
4682 tc->class = XMC_RO;
4683 else if (strcmp (s, "RW]") == 0)
4684 tc->class = XMC_RW;
4685 break;
4686 case 'S':
4687 if (strcmp (s, "SV]") == 0)
4688 tc->class = XMC_SV;
4689 break;
4690 case 'T':
4691 if (strcmp (s, "TC]") == 0)
4692 tc->class = XMC_TC;
4693 else if (strcmp (s, "TI]") == 0)
4694 tc->class = XMC_TI;
4695 else if (strcmp (s, "TB]") == 0)
4696 tc->class = XMC_TB;
4697 else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0)
4698 tc->class = XMC_TC0;
4699 break;
4700 case 'U':
4701 if (strcmp (s, "UA]") == 0)
4702 tc->class = XMC_UA;
4703 else if (strcmp (s, "UC]") == 0)
4704 tc->class = XMC_UC;
4705 break;
4706 case 'X':
4707 if (strcmp (s, "XO]") == 0)
4708 tc->class = XMC_XO;
4709 break;
4710 }
4711
4712 if (tc->class == -1)
4713 as_bad (_("Unrecognized symbol suffix"));
4714}
4715
4716/* Set the class of a label based on where it is defined. This
4717 handles symbols without suffixes. Also, move the symbol so that it
4718 follows the csect symbol. */
4719
4720void
4721ppc_frob_label (sym)
4722 symbolS *sym;
4723{
4724 if (ppc_current_csect != (symbolS *) NULL)
4725 {
4726 if (symbol_get_tc (sym)->class == -1)
4727 symbol_get_tc (sym)->class = symbol_get_tc (ppc_current_csect)->class;
4728
4729 symbol_remove (sym, &symbol_rootP, &symbol_lastP);
4730 symbol_append (sym, symbol_get_tc (ppc_current_csect)->within,
4731 &symbol_rootP, &symbol_lastP);
4732 symbol_get_tc (ppc_current_csect)->within = sym;
4733 }
4734}
4735
4736/* This variable is set by ppc_frob_symbol if any absolute symbols are
4737 seen. It tells ppc_adjust_symtab whether it needs to look through
4738 the symbols. */
4739
4740static bfd_boolean ppc_saw_abs;
4741
4742/* Change the name of a symbol just before writing it out. Set the
4743 real name if the .rename pseudo-op was used. Otherwise, remove any
4744 class suffix. Return 1 if the symbol should not be included in the
4745 symbol table. */
4746
4747int
4748ppc_frob_symbol (sym)
4749 symbolS *sym;
4750{
4751 static symbolS *ppc_last_function;
4752 static symbolS *set_end;
4753
4754 /* Discard symbols that should not be included in the output symbol
4755 table. */
4756 if (! symbol_used_in_reloc_p (sym)
4757 && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0
4758 || (! S_IS_EXTERNAL (sym)
4759 && ! symbol_get_tc (sym)->output
4760 && S_GET_STORAGE_CLASS (sym) != C_FILE)))
4761 return 1;
4762
4763 /* This one will disappear anyway. Don't make a csect sym for it. */
4764 if (sym == abs_section_sym)
4765 return 1;
4766
4767 if (symbol_get_tc (sym)->real_name != (char *) NULL)
4768 S_SET_NAME (sym, symbol_get_tc (sym)->real_name);
4769 else
4770 {
4771 const char *name;
4772 const char *s;
4773
4774 name = S_GET_NAME (sym);
4775 s = strchr (name, '[');
4776 if (s != (char *) NULL)
4777 {
4778 unsigned int len;
4779 char *snew;
4780
4781 len = s - name;
4782 snew = xmalloc (len + 1);
4783 memcpy (snew, name, len);
4784 snew[len] = '\0';
4785
4786 S_SET_NAME (sym, snew);
4787 }
4788 }
4789
4790 if (set_end != (symbolS *) NULL)
4791 {
4792 SA_SET_SYM_ENDNDX (set_end, sym);
4793 set_end = NULL;
4794 }
4795
4796 if (SF_GET_FUNCTION (sym))
4797 {
4798 if (ppc_last_function != (symbolS *) NULL)
4799 as_bad (_("two .function pseudo-ops with no intervening .ef"));
4800 ppc_last_function = sym;
4801 if (symbol_get_tc (sym)->size != (symbolS *) NULL)
4802 {
4803 resolve_symbol_value (symbol_get_tc (sym)->size);
4804 SA_SET_SYM_FSIZE (sym,
4805 (long) S_GET_VALUE (symbol_get_tc (sym)->size));
4806 }
4807 }
4808 else if (S_GET_STORAGE_CLASS (sym) == C_FCN
4809 && strcmp (S_GET_NAME (sym), ".ef") == 0)
4810 {
4811 if (ppc_last_function == (symbolS *) NULL)
4812 as_bad (_(".ef with no preceding .function"));
4813 else
4814 {
4815 set_end = ppc_last_function;
4816 ppc_last_function = NULL;
4817
4818 /* We don't have a C_EFCN symbol, but we need to force the
4819 COFF backend to believe that it has seen one. */
4820 coff_last_function = NULL;
4821 }
4822 }
4823
4824 if (! S_IS_EXTERNAL (sym)
4825 && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0
4826 && S_GET_STORAGE_CLASS (sym) != C_FILE
4827 && S_GET_STORAGE_CLASS (sym) != C_FCN
4828 && S_GET_STORAGE_CLASS (sym) != C_BLOCK
4829 && S_GET_STORAGE_CLASS (sym) != C_BSTAT
4830 && S_GET_STORAGE_CLASS (sym) != C_ESTAT
4831 && S_GET_STORAGE_CLASS (sym) != C_BINCL
4832 && S_GET_STORAGE_CLASS (sym) != C_EINCL
4833 && S_GET_SEGMENT (sym) != ppc_coff_debug_section)
4834 S_SET_STORAGE_CLASS (sym, C_HIDEXT);
4835
4836 if (S_GET_STORAGE_CLASS (sym) == C_EXT
4837 || S_GET_STORAGE_CLASS (sym) == C_HIDEXT)
4838 {
4839 int i;
4840 union internal_auxent *a;
4841
4842 /* Create a csect aux. */
4843 i = S_GET_NUMBER_AUXILIARY (sym);
4844 S_SET_NUMBER_AUXILIARY (sym, i + 1);
4845 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent;
4846 if (symbol_get_tc (sym)->class == XMC_TC0)
4847 {
4848 /* This is the TOC table. */
4849 know (strcmp (S_GET_NAME (sym), "TOC") == 0);
4850 a->x_csect.x_scnlen.l = 0;
4851 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
4852 }
4853 else if (symbol_get_tc (sym)->subseg != 0)
4854 {
4855 /* This is a csect symbol. x_scnlen is the size of the
4856 csect. */
4857 if (symbol_get_tc (sym)->next == (symbolS *) NULL)
4858 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4859 S_GET_SEGMENT (sym))
4860 - S_GET_VALUE (sym));
4861 else
4862 {
4863 resolve_symbol_value (symbol_get_tc (sym)->next);
4864 a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next)
4865 - S_GET_VALUE (sym));
4866 }
4867 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD;
4868 }
4869 else if (S_GET_SEGMENT (sym) == bss_section)
4870 {
4871 /* This is a common symbol. */
4872 a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset;
4873 a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM;
4874 if (S_IS_EXTERNAL (sym))
4875 symbol_get_tc (sym)->class = XMC_RW;
4876 else
4877 symbol_get_tc (sym)->class = XMC_BS;
4878 }
4879 else if (S_GET_SEGMENT (sym) == absolute_section)
4880 {
4881 /* This is an absolute symbol. The csect will be created by
4882 ppc_adjust_symtab. */
4883 ppc_saw_abs = TRUE;
4884 a->x_csect.x_smtyp = XTY_LD;
4885 if (symbol_get_tc (sym)->class == -1)
4886 symbol_get_tc (sym)->class = XMC_XO;
4887 }
4888 else if (! S_IS_DEFINED (sym))
4889 {
4890 /* This is an external symbol. */
4891 a->x_csect.x_scnlen.l = 0;
4892 a->x_csect.x_smtyp = XTY_ER;
4893 }
4894 else if (symbol_get_tc (sym)->class == XMC_TC)
4895 {
4896 symbolS *next;
4897
4898 /* This is a TOC definition. x_scnlen is the size of the
4899 TOC entry. */
4900 next = symbol_next (sym);
4901 while (symbol_get_tc (next)->class == XMC_TC0)
4902 next = symbol_next (next);
4903 if (next == (symbolS *) NULL
4904 || symbol_get_tc (next)->class != XMC_TC)
4905 {
4906 if (ppc_after_toc_frag == (fragS *) NULL)
4907 a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput,
4908 data_section)
4909 - S_GET_VALUE (sym));
4910 else
4911 a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address
4912 - S_GET_VALUE (sym));
4913 }
4914 else
4915 {
4916 resolve_symbol_value (next);
4917 a->x_csect.x_scnlen.l = (S_GET_VALUE (next)
4918 - S_GET_VALUE (sym));
4919 }
4920 a->x_csect.x_smtyp = (2 << 3) | XTY_SD;
4921 }
4922 else
4923 {
4924 symbolS *csect;
4925
4926 /* This is a normal symbol definition. x_scnlen is the
4927 symbol index of the containing csect. */
4928 if (S_GET_SEGMENT (sym) == text_section)
4929 csect = ppc_text_csects;
4930 else if (S_GET_SEGMENT (sym) == data_section)
4931 csect = ppc_data_csects;
4932 else
4933 abort ();
4934
4935 /* Skip the initial dummy symbol. */
4936 csect = symbol_get_tc (csect)->next;
4937
4938 if (csect == (symbolS *) NULL)
4939 {
4940 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym));
4941 a->x_csect.x_scnlen.l = 0;
4942 }
4943 else
4944 {
4945 while (symbol_get_tc (csect)->next != (symbolS *) NULL)
4946 {
4947 resolve_symbol_value (symbol_get_tc (csect)->next);
4948 if (S_GET_VALUE (symbol_get_tc (csect)->next)
4949 > S_GET_VALUE (sym))
4950 break;
4951 csect = symbol_get_tc (csect)->next;
4952 }
4953
4954 a->x_csect.x_scnlen.p =
4955 coffsymbol (symbol_get_bfdsym (csect))->native;
4956 coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen =
4957 1;
4958 }
4959 a->x_csect.x_smtyp = XTY_LD;
4960 }
4961
4962 a->x_csect.x_parmhash = 0;
4963 a->x_csect.x_snhash = 0;
4964 if (symbol_get_tc (sym)->class == -1)
4965 a->x_csect.x_smclas = XMC_PR;
4966 else
4967 a->x_csect.x_smclas = symbol_get_tc (sym)->class;
4968 a->x_csect.x_stab = 0;
4969 a->x_csect.x_snstab = 0;
4970
4971 /* Don't let the COFF backend resort these symbols. */
4972 symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END;
4973 }
4974 else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT)
4975 {
4976 /* We want the value to be the symbol index of the referenced
4977 csect symbol. BFD will do that for us if we set the right
4978 flags. */
4979 asymbol *bsym = symbol_get_bfdsym (symbol_get_tc (sym)->within);
4980 combined_entry_type *c = coffsymbol (bsym)->native;
4981
4982 S_SET_VALUE (sym, (valueT) (size_t) c);
4983 coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1;
4984 }
4985 else if (S_GET_STORAGE_CLASS (sym) == C_STSYM)
4986 {
4987 symbolS *block;
4988 symbolS *csect;
4989
4990 /* The value is the offset from the enclosing csect. */
4991 block = symbol_get_tc (sym)->within;
4992 csect = symbol_get_tc (block)->within;
4993 resolve_symbol_value (csect);
4994 S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect));
4995 }
4996 else if (S_GET_STORAGE_CLASS (sym) == C_BINCL
4997 || S_GET_STORAGE_CLASS (sym) == C_EINCL)
4998 {
4999 /* We want the value to be a file offset into the line numbers.
5000 BFD will do that for us if we set the right flags. We have
5001 already set the value correctly. */
5002 coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1;
5003 }
5004
5005 return 0;
5006}
5007
5008/* Adjust the symbol table. This creates csect symbols for all
5009 absolute symbols. */
5010
5011void
5012ppc_adjust_symtab ()
5013{
5014 symbolS *sym;
5015
5016 if (! ppc_saw_abs)
5017 return;
5018
5019 for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym))
5020 {
5021 symbolS *csect;
5022 int i;
5023 union internal_auxent *a;
5024
5025 if (S_GET_SEGMENT (sym) != absolute_section)
5026 continue;
5027
5028 csect = symbol_create (".abs[XO]", absolute_section,
5029 S_GET_VALUE (sym), &zero_address_frag);
5030 symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym);
5031 S_SET_STORAGE_CLASS (csect, C_HIDEXT);
5032 i = S_GET_NUMBER_AUXILIARY (csect);
5033 S_SET_NUMBER_AUXILIARY (csect, i + 1);
5034 a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent;
5035 a->x_csect.x_scnlen.l = 0;
5036 a->x_csect.x_smtyp = XTY_SD;
5037 a->x_csect.x_parmhash = 0;
5038 a->x_csect.x_snhash = 0;
5039 a->x_csect.x_smclas = XMC_XO;
5040 a->x_csect.x_stab = 0;
5041 a->x_csect.x_snstab = 0;
5042
5043 symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP);
5044
5045 i = S_GET_NUMBER_AUXILIARY (sym);
5046 a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent;
5047 a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native;
5048 coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1;
5049 }
5050
5051 ppc_saw_abs = FALSE;
5052}
5053
5054/* Set the VMA for a section. This is called on all the sections in
5055 turn. */
5056
5057void
5058ppc_frob_section (sec)
5059 asection *sec;
5060{
5061 static bfd_size_type vma = 0;
5062
5063 bfd_set_section_vma (stdoutput, sec, vma);
5064 vma += bfd_section_size (stdoutput, sec);
5065}
5066
5067#endif /* OBJ_XCOFF */
5068
5069
5070/* Turn a string in input_line_pointer into a floating point constant
5071 of type TYPE, and store the appropriate bytes in *LITP. The number
5072 of LITTLENUMS emitted is stored in *SIZEP. An error message is
5073 returned, or NULL on OK. */
5074
5075char *
5076md_atof (type, litp, sizep)
5077 int type;
5078 char *litp;
5079 int *sizep;
5080{
5081 int prec;
5082 LITTLENUM_TYPE words[4];
5083 char *t;
5084 int i;
5085
5086 switch (type)
5087 {
5088 case 'f':
5089 prec = 2;
5090 break;
5091
5092 case 'd':
5093 prec = 4;
5094 break;
5095
5096 default:
5097 *sizep = 0;
5098 return _("bad call to md_atof");
5099 }
5100
5101 t = atof_ieee (input_line_pointer, type, words);
5102 if (t)
5103 input_line_pointer = t;
5104
5105 *sizep = prec * 2;
5106
5107 if (target_big_endian)
5108 {
5109 for (i = 0; i < prec; i++)
5110 {
5111 md_number_to_chars (litp, (valueT) words[i], 2);
5112 litp += 2;
5113 }
5114 }
5115 else
5116 {
5117 for (i = prec - 1; i >= 0; i--)
5118 {
5119 md_number_to_chars (litp, (valueT) words[i], 2);
5120 litp += 2;
5121 }
5122 }
5123
5124 return NULL;
5125}
5126
5127/* Write a value out to the object file, using the appropriate
5128 endianness. */
5129
5130void
5131md_number_to_chars (buf, val, n)
5132 char *buf;
5133 valueT val;
5134 int n;
5135{
5136 if (target_big_endian)
5137 number_to_chars_bigendian (buf, val, n);
5138 else
5139 number_to_chars_littleendian (buf, val, n);
5140}
5141
5142/* Align a section (I don't know why this is machine dependent). */
5143
5144valueT
5145md_section_align (seg, addr)
5146 asection *seg;
5147 valueT addr;
5148{
5149 int align = bfd_get_section_alignment (stdoutput, seg);
5150
5151 return ((addr + (1 << align) - 1) & (-1 << align));
5152}
5153
5154/* We don't have any form of relaxing. */
5155
5156int
5157md_estimate_size_before_relax (fragp, seg)
5158 fragS *fragp ATTRIBUTE_UNUSED;
5159 asection *seg ATTRIBUTE_UNUSED;
5160{
5161 abort ();
5162 return 0;
5163}
5164
5165/* Convert a machine dependent frag. We never generate these. */
5166
5167void
5168md_convert_frag (abfd, sec, fragp)
5169 bfd *abfd ATTRIBUTE_UNUSED;
5170 asection *sec ATTRIBUTE_UNUSED;
5171 fragS *fragp ATTRIBUTE_UNUSED;
5172{
5173 abort ();
5174}
5175
5176/* We have no need to default values of symbols. */
5177
5178symbolS *
5179md_undefined_symbol (name)
5180 char *name ATTRIBUTE_UNUSED;
5181{
5182 return 0;
5183}
5184
5185
5186/* Functions concerning relocs. */
5187
5188/* The location from which a PC relative jump should be calculated,
5189 given a PC relative reloc. */
5190
5191long
5192md_pcrel_from_section (fixp, sec)
5193 fixS *fixp;
5194 segT sec ATTRIBUTE_UNUSED;
5195{
5196 return fixp->fx_frag->fr_address + fixp->fx_where;
5197}
5198
5199#ifdef OBJ_XCOFF
5200
5201/* This is called to see whether a fixup should be adjusted to use a
5202 section symbol. We take the opportunity to change a fixup against
5203 a symbol in the TOC subsegment into a reloc against the
5204 corresponding .tc symbol. */
5205
5206int
5207ppc_fix_adjustable (fix)
5208 fixS *fix;
5209{
5210 valueT val = resolve_symbol_value (fix->fx_addsy);
5211 segT symseg = S_GET_SEGMENT (fix->fx_addsy);
5212 TC_SYMFIELD_TYPE *tc;
5213
5214 if (symseg == absolute_section)
5215 return 0;
5216
5217 if (ppc_toc_csect != (symbolS *) NULL
5218 && fix->fx_addsy != ppc_toc_csect
5219 && symseg == data_section
5220 && val >= ppc_toc_frag->fr_address
5221 && (ppc_after_toc_frag == (fragS *) NULL
5222 || val < ppc_after_toc_frag->fr_address))
5223 {
5224 symbolS *sy;
5225
5226 for (sy = symbol_next (ppc_toc_csect);
5227 sy != (symbolS *) NULL;
5228 sy = symbol_next (sy))
5229 {
5230 TC_SYMFIELD_TYPE *sy_tc = symbol_get_tc (sy);
5231
5232 if (sy_tc->class == XMC_TC0)
5233 continue;
5234 if (sy_tc->class != XMC_TC)
5235 break;
5236 if (val == resolve_symbol_value (sy))
5237 {
5238 fix->fx_addsy = sy;
5239 fix->fx_addnumber = val - ppc_toc_frag->fr_address;
5240 return 0;
5241 }
5242 }
5243
5244 as_bad_where (fix->fx_file, fix->fx_line,
5245 _("symbol in .toc does not match any .tc"));
5246 }
5247
5248 /* Possibly adjust the reloc to be against the csect. */
5249 tc = symbol_get_tc (fix->fx_addsy);
5250 if (tc->subseg == 0
5251 && tc->class != XMC_TC0
5252 && tc->class != XMC_TC
5253 && symseg != bss_section
5254 /* Don't adjust if this is a reloc in the toc section. */
5255 && (symseg != data_section
5256 || ppc_toc_csect == NULL
5257 || val < ppc_toc_frag->fr_address
5258 || (ppc_after_toc_frag != NULL
5259 && val >= ppc_after_toc_frag->fr_address)))
5260 {
5261 symbolS *csect;
5262 symbolS *next_csect;
5263
5264 if (symseg == text_section)
5265 csect = ppc_text_csects;
5266 else if (symseg == data_section)
5267 csect = ppc_data_csects;
5268 else
5269 abort ();
5270
5271 /* Skip the initial dummy symbol. */
5272 csect = symbol_get_tc (csect)->next;
5273
5274 if (csect != (symbolS *) NULL)
5275 {
5276 while ((next_csect = symbol_get_tc (csect)->next) != (symbolS *) NULL
5277 && (symbol_get_frag (next_csect)->fr_address <= val))
5278 {
5279 /* If the csect address equals the symbol value, then we
5280 have to look through the full symbol table to see
5281 whether this is the csect we want. Note that we will
5282 only get here if the csect has zero length. */
5283 if (symbol_get_frag (csect)->fr_address == val
5284 && S_GET_VALUE (csect) == val)
5285 {
5286 symbolS *scan;
5287
5288 for (scan = symbol_next (csect);
5289 scan != NULL;
5290 scan = symbol_next (scan))
5291 {
5292 if (symbol_get_tc (scan)->subseg != 0)
5293 break;
5294 if (scan == fix->fx_addsy)
5295 break;
5296 }
5297
5298 /* If we found the symbol before the next csect
5299 symbol, then this is the csect we want. */
5300 if (scan == fix->fx_addsy)
5301 break;
5302 }
5303
5304 csect = next_csect;
5305 }
5306
5307 fix->fx_offset += val - symbol_get_frag (csect)->fr_address;
5308 fix->fx_addsy = csect;
5309 }
5310 return 0;
5311 }
5312
5313 /* Adjust a reloc against a .lcomm symbol to be against the base
5314 .lcomm. */
5315 if (symseg == bss_section
5316 && ! S_IS_EXTERNAL (fix->fx_addsy))
5317 {
5318 symbolS *sy = symbol_get_frag (fix->fx_addsy)->fr_symbol;
5319
5320 fix->fx_offset += val - resolve_symbol_value (sy);
5321 fix->fx_addsy = sy;
5322 }
5323
5324 return 0;
5325}
5326
5327/* A reloc from one csect to another must be kept. The assembler
5328 will, of course, keep relocs between sections, and it will keep
5329 absolute relocs, but we need to force it to keep PC relative relocs
5330 between two csects in the same section. */
5331
5332int
5333ppc_force_relocation (fix)
5334 fixS *fix;
5335{
5336 /* At this point fix->fx_addsy should already have been converted to
5337 a csect symbol. If the csect does not include the fragment, then
5338 we need to force the relocation. */
5339 if (fix->fx_pcrel
5340 && fix->fx_addsy != NULL
5341 && symbol_get_tc (fix->fx_addsy)->subseg != 0
5342 && ((symbol_get_frag (fix->fx_addsy)->fr_address
5343 > fix->fx_frag->fr_address)
5344 || (symbol_get_tc (fix->fx_addsy)->next != NULL
5345 && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address
5346 <= fix->fx_frag->fr_address))))
5347 return 1;
5348
5349 return generic_force_reloc (fix);
5350}
5351
5352#endif /* OBJ_XCOFF */
5353
5354#ifdef OBJ_ELF
5355/* If this function returns non-zero, it guarantees that a relocation
5356 will be emitted for a fixup. */
5357
5358int
5359ppc_force_relocation (fix)
5360 fixS *fix;
5361{
5362 /* Branch prediction relocations must force a relocation, as must
5363 the vtable description relocs. */
5364 switch (fix->fx_r_type)
5365 {
5366 case BFD_RELOC_PPC_B16_BRTAKEN:
5367 case BFD_RELOC_PPC_B16_BRNTAKEN:
5368 case BFD_RELOC_PPC_BA16_BRTAKEN:
5369 case BFD_RELOC_PPC_BA16_BRNTAKEN:
5370 case BFD_RELOC_PPC64_TOC:
5371 return 1;
5372 default:
5373 break;
5374 }
5375
5376 if (fix->fx_r_type >= BFD_RELOC_PPC_TLS
5377 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)
5378 return 1;
5379
5380 return generic_force_reloc (fix);
5381}
5382
5383int
5384ppc_fix_adjustable (fix)
5385 fixS *fix;
5386{
5387 return (fix->fx_r_type != BFD_RELOC_16_GOTOFF
5388 && fix->fx_r_type != BFD_RELOC_LO16_GOTOFF
5389 && fix->fx_r_type != BFD_RELOC_HI16_GOTOFF
5390 && fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF
5391 && fix->fx_r_type != BFD_RELOC_GPREL16
5392 && fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT
5393 && fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY
5394 && !(fix->fx_r_type >= BFD_RELOC_PPC_TLS
5395 && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)
5396 && (fix->fx_pcrel
5397 || (fix->fx_subsy != NULL
5398 && (S_GET_SEGMENT (fix->fx_subsy)
5399 == S_GET_SEGMENT (fix->fx_addsy)))
5400 || S_IS_LOCAL (fix->fx_addsy)));
5401}
5402#endif
5403
5404/* Apply a fixup to the object code. This is called for all the
5405 fixups we generated by the call to fix_new_exp, above. In the call
5406 above we used a reloc code which was the largest legal reloc code
5407 plus the operand index. Here we undo that to recover the operand
5408 index. At this point all symbol values should be fully resolved,
5409 and we attempt to completely resolve the reloc. If we can not do
5410 that, we determine the correct reloc code and put it back in the
5411 fixup. */
5412
5413void
5414md_apply_fix3 (fixP, valP, seg)
5415 fixS *fixP;
5416 valueT * valP;
5417 segT seg ATTRIBUTE_UNUSED;
5418{
5419 valueT value = * valP;
5420
5421#ifdef OBJ_ELF
5422 if (fixP->fx_addsy != NULL)
5423 {
5424 /* Hack around bfd_install_relocation brain damage. */
5425 if (fixP->fx_pcrel)
5426 value += fixP->fx_frag->fr_address + fixP->fx_where;
5427 }
5428 else
5429 fixP->fx_done = 1;
5430#else
5431 /* FIXME FIXME FIXME: The value we are passed in *valP includes
5432 the symbol values. Since we are using BFD_ASSEMBLER, if we are
5433 doing this relocation the code in write.c is going to call
5434 bfd_install_relocation, which is also going to use the symbol
5435 value. That means that if the reloc is fully resolved we want to
5436 use *valP since bfd_install_relocation is not being used.
5437 However, if the reloc is not fully resolved we do not want to use
5438 *valP, and must use fx_offset instead. However, if the reloc
5439 is PC relative, we do want to use *valP since it includes the
5440 result of md_pcrel_from. This is confusing. */
5441 if (fixP->fx_addsy == (symbolS *) NULL)
5442 fixP->fx_done = 1;
5443
5444 else if (fixP->fx_pcrel)
5445 ;
5446
5447 else
5448 value = fixP->fx_offset;
5449#endif
5450
5451 if (fixP->fx_subsy != (symbolS *) NULL)
5452 {
5453 /* We can't actually support subtracting a symbol. */
5454 as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex"));
5455 }
5456
5457 if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
5458 {
5459 int opindex;
5460 const struct powerpc_operand *operand;
5461 char *where;
5462 unsigned long insn;
5463
5464 opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED;
5465
5466 operand = &powerpc_operands[opindex];
5467
5468#ifdef OBJ_XCOFF
5469 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
5470 does not generate a reloc. It uses the offset of `sym' within its
5471 csect. Other usages, such as `.long sym', generate relocs. This
5472 is the documented behaviour of non-TOC symbols. */
5473 if ((operand->flags & PPC_OPERAND_PARENS) != 0
5474 && operand->bits == 16
5475 && operand->shift == 0
5476 && (operand->insert == NULL || ppc_obj64)
5477 && fixP->fx_addsy != NULL
5478 && symbol_get_tc (fixP->fx_addsy)->subseg != 0
5479 && symbol_get_tc (fixP->fx_addsy)->class != XMC_TC
5480 && symbol_get_tc (fixP->fx_addsy)->class != XMC_TC0
5481 && S_GET_SEGMENT (fixP->fx_addsy) != bss_section)
5482 {
5483 value = fixP->fx_offset;
5484 fixP->fx_done = 1;
5485 }
5486#endif
5487
5488 /* Fetch the instruction, insert the fully resolved operand
5489 value, and stuff the instruction back again. */
5490 where = fixP->fx_frag->fr_literal + fixP->fx_where;
5491 if (target_big_endian)
5492 insn = bfd_getb32 ((unsigned char *) where);
5493 else
5494 insn = bfd_getl32 ((unsigned char *) where);
5495 insn = ppc_insert_operand (insn, operand, (offsetT) value,
5496 fixP->fx_file, fixP->fx_line);
5497 if (target_big_endian)
5498 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
5499 else
5500 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
5501
5502 if (fixP->fx_done)
5503 /* Nothing else to do here. */
5504 return;
5505
5506 assert (fixP->fx_addsy != NULL);
5507
5508 /* Determine a BFD reloc value based on the operand information.
5509 We are only prepared to turn a few of the operands into
5510 relocs. */
5511 if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
5512 && operand->bits == 26
5513 && operand->shift == 0)
5514 fixP->fx_r_type = BFD_RELOC_PPC_B26;
5515 else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0
5516 && operand->bits == 16
5517 && operand->shift == 0)
5518 {
5519 fixP->fx_r_type = BFD_RELOC_PPC_B16;
5520#ifdef OBJ_XCOFF
5521 fixP->fx_size = 2;
5522 if (target_big_endian)
5523 fixP->fx_where += 2;
5524#endif
5525 }
5526 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
5527 && operand->bits == 26
5528 && operand->shift == 0)
5529 fixP->fx_r_type = BFD_RELOC_PPC_BA26;
5530 else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0
5531 && operand->bits == 16
5532 && operand->shift == 0)
5533 {
5534 fixP->fx_r_type = BFD_RELOC_PPC_BA16;
5535#ifdef OBJ_XCOFF
5536 fixP->fx_size = 2;
5537 if (target_big_endian)
5538 fixP->fx_where += 2;
5539#endif
5540 }
5541#if defined (OBJ_XCOFF) || defined (OBJ_ELF)
5542 else if ((operand->flags & PPC_OPERAND_PARENS) != 0
5543 && operand->bits == 16
5544 && operand->shift == 0)
5545 {
5546 if (ppc_is_toc_sym (fixP->fx_addsy))
5547 {
5548 fixP->fx_r_type = BFD_RELOC_PPC_TOC16;
5549#ifdef OBJ_ELF
5550 if (ppc_obj64
5551 && (operand->flags & PPC_OPERAND_DS) != 0)
5552 fixP->fx_r_type = BFD_RELOC_PPC64_TOC16_DS;
5553#endif
5554 }
5555 else
5556 {
5557 fixP->fx_r_type = BFD_RELOC_16;
5558#ifdef OBJ_ELF
5559 if (ppc_obj64
5560 && (operand->flags & PPC_OPERAND_DS) != 0)
5561 fixP->fx_r_type = BFD_RELOC_PPC64_ADDR16_DS;
5562#endif
5563 }
5564 fixP->fx_size = 2;
5565 if (target_big_endian)
5566 fixP->fx_where += 2;
5567 }
5568#endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
5569 else
5570 {
5571 char *sfile;
5572 unsigned int sline;
5573
5574 /* Use expr_symbol_where to see if this is an expression
5575 symbol. */
5576 if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline))
5577 as_bad_where (fixP->fx_file, fixP->fx_line,
5578 _("unresolved expression that must be resolved"));
5579 else
5580 as_bad_where (fixP->fx_file, fixP->fx_line,
5581 _("unsupported relocation against %s"),
5582 S_GET_NAME (fixP->fx_addsy));
5583 fixP->fx_done = 1;
5584 return;
5585 }
5586 }
5587 else
5588 {
5589#ifdef OBJ_ELF
5590 ppc_elf_validate_fix (fixP, seg);
5591#endif
5592 switch (fixP->fx_r_type)
5593 {
5594 case BFD_RELOC_CTOR:
5595 if (ppc_obj64)
5596 goto ctor64;
5597 /* fall through */
5598
5599 case BFD_RELOC_32:
5600 if (fixP->fx_pcrel)
5601 fixP->fx_r_type = BFD_RELOC_32_PCREL;
5602 /* fall through */
5603
5604 case BFD_RELOC_RVA:
5605 case BFD_RELOC_32_PCREL:
5606 case BFD_RELOC_PPC_EMB_NADDR32:
5607 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5608 value, 4);
5609 break;
5610
5611 case BFD_RELOC_64:
5612 ctor64:
5613 if (fixP->fx_pcrel)
5614 fixP->fx_r_type = BFD_RELOC_64_PCREL;
5615 /* fall through */
5616
5617 case BFD_RELOC_64_PCREL:
5618 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5619 value, 8);
5620 break;
5621
5622 case BFD_RELOC_LO16:
5623 case BFD_RELOC_16:
5624 case BFD_RELOC_GPREL16:
5625 case BFD_RELOC_16_GOT_PCREL:
5626 case BFD_RELOC_16_GOTOFF:
5627 case BFD_RELOC_LO16_GOTOFF:
5628 case BFD_RELOC_HI16_GOTOFF:
5629 case BFD_RELOC_HI16_S_GOTOFF:
5630 case BFD_RELOC_16_BASEREL:
5631 case BFD_RELOC_LO16_BASEREL:
5632 case BFD_RELOC_HI16_BASEREL:
5633 case BFD_RELOC_HI16_S_BASEREL:
5634 case BFD_RELOC_PPC_EMB_NADDR16:
5635 case BFD_RELOC_PPC_EMB_NADDR16_LO:
5636 case BFD_RELOC_PPC_EMB_NADDR16_HI:
5637 case BFD_RELOC_PPC_EMB_NADDR16_HA:
5638 case BFD_RELOC_PPC_EMB_SDAI16:
5639 case BFD_RELOC_PPC_EMB_SDA2REL:
5640 case BFD_RELOC_PPC_EMB_SDA2I16:
5641 case BFD_RELOC_PPC_EMB_RELSEC16:
5642 case BFD_RELOC_PPC_EMB_RELST_LO:
5643 case BFD_RELOC_PPC_EMB_RELST_HI:
5644 case BFD_RELOC_PPC_EMB_RELST_HA:
5645 case BFD_RELOC_PPC_EMB_RELSDA:
5646 case BFD_RELOC_PPC_TOC16:
5647#ifdef OBJ_ELF
5648 case BFD_RELOC_PPC64_TOC16_LO:
5649 case BFD_RELOC_PPC64_TOC16_HI:
5650 case BFD_RELOC_PPC64_TOC16_HA:
5651#endif
5652 if (fixP->fx_pcrel)
5653 {
5654 if (fixP->fx_addsy != NULL)
5655 as_bad_where (fixP->fx_file, fixP->fx_line,
5656 _("cannot emit PC relative %s relocation against %s"),
5657 bfd_get_reloc_code_name (fixP->fx_r_type),
5658 S_GET_NAME (fixP->fx_addsy));
5659 else
5660 as_bad_where (fixP->fx_file, fixP->fx_line,
5661 _("cannot emit PC relative %s relocation"),
5662 bfd_get_reloc_code_name (fixP->fx_r_type));
5663 }
5664
5665 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5666 value, 2);
5667 break;
5668
5669 /* This case happens when you write, for example,
5670 lis %r3,(L1-L2)@ha
5671 where L1 and L2 are defined later. */
5672 case BFD_RELOC_HI16:
5673 if (fixP->fx_pcrel)
5674 abort ();
5675 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5676 PPC_HI (value), 2);
5677 break;
5678
5679 case BFD_RELOC_HI16_S:
5680 if (fixP->fx_pcrel)
5681 abort ();
5682 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5683 PPC_HA (value), 2);
5684 break;
5685
5686#ifdef OBJ_ELF
5687 case BFD_RELOC_PPC64_HIGHER:
5688 if (fixP->fx_pcrel)
5689 abort ();
5690 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5691 PPC_HIGHER (value), 2);
5692 break;
5693
5694 case BFD_RELOC_PPC64_HIGHER_S:
5695 if (fixP->fx_pcrel)
5696 abort ();
5697 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5698 PPC_HIGHERA (value), 2);
5699 break;
5700
5701 case BFD_RELOC_PPC64_HIGHEST:
5702 if (fixP->fx_pcrel)
5703 abort ();
5704 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5705 PPC_HIGHEST (value), 2);
5706 break;
5707
5708 case BFD_RELOC_PPC64_HIGHEST_S:
5709 if (fixP->fx_pcrel)
5710 abort ();
5711 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5712 PPC_HIGHESTA (value), 2);
5713 break;
5714
5715 case BFD_RELOC_PPC64_ADDR16_DS:
5716 case BFD_RELOC_PPC64_ADDR16_LO_DS:
5717 case BFD_RELOC_PPC64_GOT16_DS:
5718 case BFD_RELOC_PPC64_GOT16_LO_DS:
5719 case BFD_RELOC_PPC64_PLT16_LO_DS:
5720 case BFD_RELOC_PPC64_SECTOFF_DS:
5721 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
5722 case BFD_RELOC_PPC64_TOC16_DS:
5723 case BFD_RELOC_PPC64_TOC16_LO_DS:
5724 case BFD_RELOC_PPC64_PLTGOT16_DS:
5725 case BFD_RELOC_PPC64_PLTGOT16_LO_DS:
5726 if (fixP->fx_pcrel)
5727 abort ();
5728 {
5729 unsigned char *where = fixP->fx_frag->fr_literal + fixP->fx_where;
5730 unsigned long val;
5731
5732 if (target_big_endian)
5733 val = bfd_getb16 (where);
5734 else
5735 val = bfd_getl16 (where);
5736 val |= (value & 0xfffc);
5737 if (target_big_endian)
5738 bfd_putb16 ((bfd_vma) val, where);
5739 else
5740 bfd_putl16 ((bfd_vma) val, where);
5741 }
5742 break;
5743
5744 case BFD_RELOC_PPC_TLS:
5745 case BFD_RELOC_PPC_DTPMOD:
5746 case BFD_RELOC_PPC_TPREL16:
5747 case BFD_RELOC_PPC_TPREL16_LO:
5748 case BFD_RELOC_PPC_TPREL16_HI:
5749 case BFD_RELOC_PPC_TPREL16_HA:
5750 case BFD_RELOC_PPC_TPREL:
5751 case BFD_RELOC_PPC_DTPREL16:
5752 case BFD_RELOC_PPC_DTPREL16_LO:
5753 case BFD_RELOC_PPC_DTPREL16_HI:
5754 case BFD_RELOC_PPC_DTPREL16_HA:
5755 case BFD_RELOC_PPC_DTPREL:
5756 case BFD_RELOC_PPC_GOT_TLSGD16:
5757 case BFD_RELOC_PPC_GOT_TLSGD16_LO:
5758 case BFD_RELOC_PPC_GOT_TLSGD16_HI:
5759 case BFD_RELOC_PPC_GOT_TLSGD16_HA:
5760 case BFD_RELOC_PPC_GOT_TLSLD16:
5761 case BFD_RELOC_PPC_GOT_TLSLD16_LO:
5762 case BFD_RELOC_PPC_GOT_TLSLD16_HI:
5763 case BFD_RELOC_PPC_GOT_TLSLD16_HA:
5764 case BFD_RELOC_PPC_GOT_TPREL16:
5765 case BFD_RELOC_PPC_GOT_TPREL16_LO:
5766 case BFD_RELOC_PPC_GOT_TPREL16_HI:
5767 case BFD_RELOC_PPC_GOT_TPREL16_HA:
5768 case BFD_RELOC_PPC_GOT_DTPREL16:
5769 case BFD_RELOC_PPC_GOT_DTPREL16_LO:
5770 case BFD_RELOC_PPC_GOT_DTPREL16_HI:
5771 case BFD_RELOC_PPC_GOT_DTPREL16_HA:
5772 case BFD_RELOC_PPC64_TPREL16_DS:
5773 case BFD_RELOC_PPC64_TPREL16_LO_DS:
5774 case BFD_RELOC_PPC64_TPREL16_HIGHER:
5775 case BFD_RELOC_PPC64_TPREL16_HIGHERA:
5776 case BFD_RELOC_PPC64_TPREL16_HIGHEST:
5777 case BFD_RELOC_PPC64_TPREL16_HIGHESTA:
5778 case BFD_RELOC_PPC64_DTPREL16_DS:
5779 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
5780 case BFD_RELOC_PPC64_DTPREL16_HIGHER:
5781 case BFD_RELOC_PPC64_DTPREL16_HIGHERA:
5782 case BFD_RELOC_PPC64_DTPREL16_HIGHEST:
5783 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA:
5784 break;
5785#endif
5786 /* Because SDA21 modifies the register field, the size is set to 4
5787 bytes, rather than 2, so offset it here appropriately. */
5788 case BFD_RELOC_PPC_EMB_SDA21:
5789 if (fixP->fx_pcrel)
5790 abort ();
5791
5792 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where
5793 + ((target_big_endian) ? 2 : 0),
5794 value, 2);
5795 break;
5796
5797 case BFD_RELOC_8:
5798 if (fixP->fx_pcrel)
5799 abort ();
5800
5801 md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where,
5802 value, 1);
5803 break;
5804
5805 case BFD_RELOC_24_PLT_PCREL:
5806 case BFD_RELOC_PPC_LOCAL24PC:
5807 if (!fixP->fx_pcrel && !fixP->fx_done)
5808 abort ();
5809
5810 if (fixP->fx_done)
5811 {
5812 char *where;
5813 unsigned long insn;
5814
5815 /* Fetch the instruction, insert the fully resolved operand
5816 value, and stuff the instruction back again. */
5817 where = fixP->fx_frag->fr_literal + fixP->fx_where;
5818 if (target_big_endian)
5819 insn = bfd_getb32 ((unsigned char *) where);
5820 else
5821 insn = bfd_getl32 ((unsigned char *) where);
5822 if ((value & 3) != 0)
5823 as_bad_where (fixP->fx_file, fixP->fx_line,
5824 _("must branch to an address a multiple of 4"));
5825 if ((offsetT) value < -0x40000000
5826 || (offsetT) value >= 0x40000000)
5827 as_bad_where (fixP->fx_file, fixP->fx_line,
5828 _("@local or @plt branch destination is too far away, %ld bytes"),
5829 (long) value);
5830 insn = insn | (value & 0x03fffffc);
5831 if (target_big_endian)
5832 bfd_putb32 ((bfd_vma) insn, (unsigned char *) where);
5833 else
5834 bfd_putl32 ((bfd_vma) insn, (unsigned char *) where);
5835 }
5836 break;
5837
5838 case BFD_RELOC_VTABLE_INHERIT:
5839 fixP->fx_done = 0;
5840 if (fixP->fx_addsy
5841 && !S_IS_DEFINED (fixP->fx_addsy)
5842 && !S_IS_WEAK (fixP->fx_addsy))
5843 S_SET_WEAK (fixP->fx_addsy);
5844 break;
5845
5846 case BFD_RELOC_VTABLE_ENTRY:
5847 fixP->fx_done = 0;
5848 break;
5849
5850#ifdef OBJ_ELF
5851 /* Generated by reference to `sym@tocbase'. The sym is
5852 ignored by the linker. */
5853 case BFD_RELOC_PPC64_TOC:
5854 fixP->fx_done = 0;
5855 break;
5856#endif
5857 default:
5858 fprintf (stderr,
5859 _("Gas failure, reloc value %d\n"), fixP->fx_r_type);
5860 fflush (stderr);
5861 abort ();
5862 }
5863 }
5864
5865#ifdef OBJ_ELF
5866 fixP->fx_addnumber = value;
5867#else
5868 if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16)
5869 fixP->fx_addnumber = 0;
5870 else
5871 {
5872#ifdef TE_PE
5873 fixP->fx_addnumber = 0;
5874#else
5875 /* We want to use the offset within the data segment of the
5876 symbol, not the actual VMA of the symbol. */
5877 fixP->fx_addnumber =
5878 - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixP->fx_addsy));
5879#endif
5880 }
5881#endif
5882}
5883
5884/* Generate a reloc for a fixup. */
5885
5886arelent *
5887tc_gen_reloc (seg, fixp)
5888 asection *seg ATTRIBUTE_UNUSED;
5889 fixS *fixp;
5890{
5891 arelent *reloc;
5892
5893 reloc = (arelent *) xmalloc (sizeof (arelent));
5894
5895 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
5896 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
5897 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
5898 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
5899 if (reloc->howto == (reloc_howto_type *) NULL)
5900 {
5901 as_bad_where (fixp->fx_file, fixp->fx_line,
5902 _("reloc %d not supported by object file format"),
5903 (int) fixp->fx_r_type);
5904 return NULL;
5905 }
5906 reloc->addend = fixp->fx_addnumber;
5907
5908 return reloc;
5909}
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