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252b5132 | 1 | /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000) |
2c1c4c62 GK |
2 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
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 <ctype.h> | |
25 | #include "as.h" | |
26 | #include "subsegs.h" | |
27 | ||
28 | #include "opcode/ppc.h" | |
29 | ||
30 | #ifdef OBJ_ELF | |
31 | #include "elf/ppc.h" | |
32 | #endif | |
33 | ||
34 | #ifdef TE_PE | |
35 | #include "coff/pe.h" | |
36 | #endif | |
37 | ||
38 | /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */ | |
39 | ||
40 | /* Tell the main code what the endianness is. */ | |
41 | extern int target_big_endian; | |
42 | ||
43 | /* Whether or not, we've set target_big_endian. */ | |
44 | static int set_target_endian = 0; | |
45 | ||
46 | /* Whether to use user friendly register names. */ | |
47 | #ifndef TARGET_REG_NAMES_P | |
48 | #ifdef TE_PE | |
49 | #define TARGET_REG_NAMES_P true | |
50 | #else | |
51 | #define TARGET_REG_NAMES_P false | |
52 | #endif | |
53 | #endif | |
54 | ||
55 | static boolean reg_names_p = TARGET_REG_NAMES_P; | |
56 | ||
57 | static boolean register_name PARAMS ((expressionS *)); | |
58 | static void ppc_set_cpu PARAMS ((void)); | |
59 | static unsigned long ppc_insert_operand | |
60 | PARAMS ((unsigned long insn, const struct powerpc_operand *operand, | |
61 | offsetT val, char *file, unsigned int line)); | |
62 | static void ppc_macro PARAMS ((char *str, const struct powerpc_macro *macro)); | |
63 | static void ppc_byte PARAMS ((int)); | |
64 | static int ppc_is_toc_sym PARAMS ((symbolS *sym)); | |
65 | static void ppc_tc PARAMS ((int)); | |
66 | ||
67 | #ifdef OBJ_XCOFF | |
68 | static void ppc_comm PARAMS ((int)); | |
69 | static void ppc_bb PARAMS ((int)); | |
70 | static void ppc_bc PARAMS ((int)); | |
71 | static void ppc_bf PARAMS ((int)); | |
72 | static void ppc_biei PARAMS ((int)); | |
73 | static void ppc_bs PARAMS ((int)); | |
74 | static void ppc_eb PARAMS ((int)); | |
75 | static void ppc_ec PARAMS ((int)); | |
76 | static void ppc_ef PARAMS ((int)); | |
77 | static void ppc_es PARAMS ((int)); | |
78 | static void ppc_csect PARAMS ((int)); | |
79 | static void ppc_change_csect PARAMS ((symbolS *)); | |
80 | static void ppc_function PARAMS ((int)); | |
81 | static void ppc_extern PARAMS ((int)); | |
82 | static void ppc_lglobl PARAMS ((int)); | |
83 | static void ppc_section PARAMS ((int)); | |
84 | static void ppc_named_section PARAMS ((int)); | |
85 | static void ppc_stabx PARAMS ((int)); | |
86 | static void ppc_rename PARAMS ((int)); | |
87 | static void ppc_toc PARAMS ((int)); | |
88 | static void ppc_xcoff_cons PARAMS ((int)); | |
7f6d05e8 | 89 | static void ppc_machine PARAMS ((int)); |
252b5132 RH |
90 | static void ppc_vbyte PARAMS ((int)); |
91 | #endif | |
92 | ||
93 | #ifdef OBJ_ELF | |
94 | static bfd_reloc_code_real_type ppc_elf_suffix PARAMS ((char **, expressionS *)); | |
95 | static void ppc_elf_cons PARAMS ((int)); | |
96 | static void ppc_elf_rdata PARAMS ((int)); | |
97 | static void ppc_elf_lcomm PARAMS ((int)); | |
98 | static void ppc_elf_validate_fix PARAMS ((fixS *, segT)); | |
99 | #endif | |
100 | ||
101 | #ifdef TE_PE | |
102 | static void ppc_set_current_section PARAMS ((segT)); | |
103 | static void ppc_previous PARAMS ((int)); | |
104 | static void ppc_pdata PARAMS ((int)); | |
105 | static void ppc_ydata PARAMS ((int)); | |
106 | static void ppc_reldata PARAMS ((int)); | |
107 | static void ppc_rdata PARAMS ((int)); | |
108 | static void ppc_ualong PARAMS ((int)); | |
109 | static void ppc_znop PARAMS ((int)); | |
110 | static void ppc_pe_comm PARAMS ((int)); | |
111 | static void ppc_pe_section PARAMS ((int)); | |
112 | static void ppc_pe_function PARAMS ((int)); | |
113 | static void ppc_pe_tocd PARAMS ((int)); | |
114 | #endif | |
115 | \f | |
116 | /* Generic assembler global variables which must be defined by all | |
117 | targets. */ | |
118 | ||
119 | #ifdef OBJ_ELF | |
120 | /* This string holds the chars that always start a comment. If the | |
121 | pre-processor is disabled, these aren't very useful. The macro | |
122 | tc_comment_chars points to this. We use this, rather than the | |
123 | usual comment_chars, so that we can switch for Solaris conventions. */ | |
124 | static const char ppc_solaris_comment_chars[] = "#!"; | |
125 | static const char ppc_eabi_comment_chars[] = "#"; | |
126 | ||
127 | #ifdef TARGET_SOLARIS_COMMENT | |
128 | const char *ppc_comment_chars = ppc_solaris_comment_chars; | |
129 | #else | |
130 | const char *ppc_comment_chars = ppc_eabi_comment_chars; | |
131 | #endif | |
132 | #else | |
133 | const char comment_chars[] = "#"; | |
134 | #endif | |
135 | ||
136 | /* Characters which start a comment at the beginning of a line. */ | |
137 | const char line_comment_chars[] = "#"; | |
138 | ||
139 | /* Characters which may be used to separate multiple commands on a | |
140 | single line. */ | |
141 | const char line_separator_chars[] = ";"; | |
142 | ||
143 | /* Characters which are used to indicate an exponent in a floating | |
144 | point number. */ | |
145 | const char EXP_CHARS[] = "eE"; | |
146 | ||
147 | /* Characters which mean that a number is a floating point constant, | |
148 | as in 0d1.0. */ | |
149 | const char FLT_CHARS[] = "dD"; | |
150 | \f | |
151 | /* The target specific pseudo-ops which we support. */ | |
152 | ||
153 | const pseudo_typeS md_pseudo_table[] = | |
154 | { | |
155 | /* Pseudo-ops which must be overridden. */ | |
156 | { "byte", ppc_byte, 0 }, | |
157 | ||
158 | #ifdef OBJ_XCOFF | |
159 | /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these | |
160 | legitimately belong in the obj-*.c file. However, XCOFF is based | |
161 | on COFF, and is only implemented for the RS/6000. We just use | |
162 | obj-coff.c, and add what we need here. */ | |
163 | { "comm", ppc_comm, 0 }, | |
164 | { "lcomm", ppc_comm, 1 }, | |
165 | { "bb", ppc_bb, 0 }, | |
166 | { "bc", ppc_bc, 0 }, | |
167 | { "bf", ppc_bf, 0 }, | |
168 | { "bi", ppc_biei, 0 }, | |
169 | { "bs", ppc_bs, 0 }, | |
170 | { "csect", ppc_csect, 0 }, | |
171 | { "data", ppc_section, 'd' }, | |
172 | { "eb", ppc_eb, 0 }, | |
173 | { "ec", ppc_ec, 0 }, | |
174 | { "ef", ppc_ef, 0 }, | |
175 | { "ei", ppc_biei, 1 }, | |
176 | { "es", ppc_es, 0 }, | |
177 | { "extern", ppc_extern, 0 }, | |
178 | { "function", ppc_function, 0 }, | |
179 | { "lglobl", ppc_lglobl, 0 }, | |
180 | { "rename", ppc_rename, 0 }, | |
181 | { "section", ppc_named_section, 0 }, | |
182 | { "stabx", ppc_stabx, 0 }, | |
183 | { "text", ppc_section, 't' }, | |
184 | { "toc", ppc_toc, 0 }, | |
185 | { "long", ppc_xcoff_cons, 2 }, | |
7f6d05e8 | 186 | { "llong", ppc_xcoff_cons, 3 }, |
252b5132 RH |
187 | { "word", ppc_xcoff_cons, 1 }, |
188 | { "short", ppc_xcoff_cons, 1 }, | |
189 | { "vbyte", ppc_vbyte, 0 }, | |
7f6d05e8 | 190 | { "machine", ppc_machine, 0 }, |
252b5132 RH |
191 | #endif |
192 | ||
193 | #ifdef OBJ_ELF | |
194 | { "long", ppc_elf_cons, 4 }, | |
195 | { "word", ppc_elf_cons, 2 }, | |
196 | { "short", ppc_elf_cons, 2 }, | |
197 | { "rdata", ppc_elf_rdata, 0 }, | |
198 | { "rodata", ppc_elf_rdata, 0 }, | |
199 | { "lcomm", ppc_elf_lcomm, 0 }, | |
200 | #endif | |
201 | ||
202 | #ifdef TE_PE | |
203 | /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format */ | |
204 | { "previous", ppc_previous, 0 }, | |
205 | { "pdata", ppc_pdata, 0 }, | |
206 | { "ydata", ppc_ydata, 0 }, | |
207 | { "reldata", ppc_reldata, 0 }, | |
208 | { "rdata", ppc_rdata, 0 }, | |
209 | { "ualong", ppc_ualong, 0 }, | |
210 | { "znop", ppc_znop, 0 }, | |
211 | { "comm", ppc_pe_comm, 0 }, | |
212 | { "lcomm", ppc_pe_comm, 1 }, | |
213 | { "section", ppc_pe_section, 0 }, | |
214 | { "function", ppc_pe_function,0 }, | |
215 | { "tocd", ppc_pe_tocd, 0 }, | |
216 | #endif | |
217 | ||
218 | /* This pseudo-op is used even when not generating XCOFF output. */ | |
219 | { "tc", ppc_tc, 0 }, | |
220 | ||
221 | { NULL, NULL, 0 } | |
222 | }; | |
223 | ||
224 | \f | |
225 | /* Predefined register names if -mregnames (or default for Windows NT). */ | |
226 | /* In general, there are lots of them, in an attempt to be compatible */ | |
227 | /* with a number of other Windows NT assemblers. */ | |
228 | ||
229 | /* Structure to hold information about predefined registers. */ | |
230 | struct pd_reg | |
231 | { | |
232 | char *name; | |
233 | int value; | |
234 | }; | |
235 | ||
236 | /* List of registers that are pre-defined: | |
237 | ||
238 | Each general register has predefined names of the form: | |
239 | 1. r<reg_num> which has the value <reg_num>. | |
240 | 2. r.<reg_num> which has the value <reg_num>. | |
241 | ||
252b5132 RH |
242 | Each floating point register has predefined names of the form: |
243 | 1. f<reg_num> which has the value <reg_num>. | |
244 | 2. f.<reg_num> which has the value <reg_num>. | |
245 | ||
7a899fff C |
246 | Each vector unit register has predefined names of the form: |
247 | 1. v<reg_num> which has the value <reg_num>. | |
248 | 2. v.<reg_num> which has the value <reg_num>. | |
249 | ||
252b5132 RH |
250 | Each condition register has predefined names of the form: |
251 | 1. cr<reg_num> which has the value <reg_num>. | |
252 | 2. cr.<reg_num> which has the value <reg_num>. | |
253 | ||
254 | There are individual registers as well: | |
255 | sp or r.sp has the value 1 | |
256 | rtoc or r.toc has the value 2 | |
257 | fpscr has the value 0 | |
258 | xer has the value 1 | |
259 | lr has the value 8 | |
260 | ctr has the value 9 | |
261 | pmr has the value 0 | |
262 | dar has the value 19 | |
263 | dsisr has the value 18 | |
264 | dec has the value 22 | |
265 | sdr1 has the value 25 | |
266 | srr0 has the value 26 | |
267 | srr1 has the value 27 | |
268 | ||
269 | The table is sorted. Suitable for searching by a binary search. */ | |
270 | ||
271 | static const struct pd_reg pre_defined_registers[] = | |
272 | { | |
273 | { "cr.0", 0 }, /* Condition Registers */ | |
274 | { "cr.1", 1 }, | |
275 | { "cr.2", 2 }, | |
276 | { "cr.3", 3 }, | |
277 | { "cr.4", 4 }, | |
278 | { "cr.5", 5 }, | |
279 | { "cr.6", 6 }, | |
280 | { "cr.7", 7 }, | |
281 | ||
282 | { "cr0", 0 }, | |
283 | { "cr1", 1 }, | |
284 | { "cr2", 2 }, | |
285 | { "cr3", 3 }, | |
286 | { "cr4", 4 }, | |
287 | { "cr5", 5 }, | |
288 | { "cr6", 6 }, | |
289 | { "cr7", 7 }, | |
290 | ||
291 | { "ctr", 9 }, | |
292 | ||
293 | { "dar", 19 }, /* Data Access Register */ | |
294 | { "dec", 22 }, /* Decrementer */ | |
295 | { "dsisr", 18 }, /* Data Storage Interrupt Status Register */ | |
296 | ||
297 | { "f.0", 0 }, /* Floating point registers */ | |
298 | { "f.1", 1 }, | |
299 | { "f.10", 10 }, | |
300 | { "f.11", 11 }, | |
301 | { "f.12", 12 }, | |
302 | { "f.13", 13 }, | |
303 | { "f.14", 14 }, | |
304 | { "f.15", 15 }, | |
305 | { "f.16", 16 }, | |
306 | { "f.17", 17 }, | |
307 | { "f.18", 18 }, | |
308 | { "f.19", 19 }, | |
309 | { "f.2", 2 }, | |
310 | { "f.20", 20 }, | |
311 | { "f.21", 21 }, | |
312 | { "f.22", 22 }, | |
313 | { "f.23", 23 }, | |
314 | { "f.24", 24 }, | |
315 | { "f.25", 25 }, | |
316 | { "f.26", 26 }, | |
317 | { "f.27", 27 }, | |
318 | { "f.28", 28 }, | |
319 | { "f.29", 29 }, | |
320 | { "f.3", 3 }, | |
321 | { "f.30", 30 }, | |
322 | { "f.31", 31 }, | |
323 | { "f.4", 4 }, | |
324 | { "f.5", 5 }, | |
325 | { "f.6", 6 }, | |
326 | { "f.7", 7 }, | |
327 | { "f.8", 8 }, | |
328 | { "f.9", 9 }, | |
329 | ||
330 | { "f0", 0 }, | |
331 | { "f1", 1 }, | |
332 | { "f10", 10 }, | |
333 | { "f11", 11 }, | |
334 | { "f12", 12 }, | |
335 | { "f13", 13 }, | |
336 | { "f14", 14 }, | |
337 | { "f15", 15 }, | |
338 | { "f16", 16 }, | |
339 | { "f17", 17 }, | |
340 | { "f18", 18 }, | |
341 | { "f19", 19 }, | |
342 | { "f2", 2 }, | |
343 | { "f20", 20 }, | |
344 | { "f21", 21 }, | |
345 | { "f22", 22 }, | |
346 | { "f23", 23 }, | |
347 | { "f24", 24 }, | |
348 | { "f25", 25 }, | |
349 | { "f26", 26 }, | |
350 | { "f27", 27 }, | |
351 | { "f28", 28 }, | |
352 | { "f29", 29 }, | |
353 | { "f3", 3 }, | |
354 | { "f30", 30 }, | |
355 | { "f31", 31 }, | |
356 | { "f4", 4 }, | |
357 | { "f5", 5 }, | |
358 | { "f6", 6 }, | |
359 | { "f7", 7 }, | |
360 | { "f8", 8 }, | |
361 | { "f9", 9 }, | |
362 | ||
363 | { "fpscr", 0 }, | |
364 | ||
365 | { "lr", 8 }, /* Link Register */ | |
366 | ||
367 | { "pmr", 0 }, | |
368 | ||
369 | { "r.0", 0 }, /* General Purpose Registers */ | |
370 | { "r.1", 1 }, | |
371 | { "r.10", 10 }, | |
372 | { "r.11", 11 }, | |
373 | { "r.12", 12 }, | |
374 | { "r.13", 13 }, | |
375 | { "r.14", 14 }, | |
376 | { "r.15", 15 }, | |
377 | { "r.16", 16 }, | |
378 | { "r.17", 17 }, | |
379 | { "r.18", 18 }, | |
380 | { "r.19", 19 }, | |
381 | { "r.2", 2 }, | |
382 | { "r.20", 20 }, | |
383 | { "r.21", 21 }, | |
384 | { "r.22", 22 }, | |
385 | { "r.23", 23 }, | |
386 | { "r.24", 24 }, | |
387 | { "r.25", 25 }, | |
388 | { "r.26", 26 }, | |
389 | { "r.27", 27 }, | |
390 | { "r.28", 28 }, | |
391 | { "r.29", 29 }, | |
392 | { "r.3", 3 }, | |
393 | { "r.30", 30 }, | |
394 | { "r.31", 31 }, | |
395 | { "r.4", 4 }, | |
396 | { "r.5", 5 }, | |
397 | { "r.6", 6 }, | |
398 | { "r.7", 7 }, | |
399 | { "r.8", 8 }, | |
400 | { "r.9", 9 }, | |
401 | ||
402 | { "r.sp", 1 }, /* Stack Pointer */ | |
403 | ||
404 | { "r.toc", 2 }, /* Pointer to the table of contents */ | |
405 | ||
406 | { "r0", 0 }, /* More general purpose registers */ | |
407 | { "r1", 1 }, | |
408 | { "r10", 10 }, | |
409 | { "r11", 11 }, | |
410 | { "r12", 12 }, | |
411 | { "r13", 13 }, | |
412 | { "r14", 14 }, | |
413 | { "r15", 15 }, | |
414 | { "r16", 16 }, | |
415 | { "r17", 17 }, | |
416 | { "r18", 18 }, | |
417 | { "r19", 19 }, | |
418 | { "r2", 2 }, | |
419 | { "r20", 20 }, | |
420 | { "r21", 21 }, | |
421 | { "r22", 22 }, | |
422 | { "r23", 23 }, | |
423 | { "r24", 24 }, | |
424 | { "r25", 25 }, | |
425 | { "r26", 26 }, | |
426 | { "r27", 27 }, | |
427 | { "r28", 28 }, | |
428 | { "r29", 29 }, | |
429 | { "r3", 3 }, | |
430 | { "r30", 30 }, | |
431 | { "r31", 31 }, | |
432 | { "r4", 4 }, | |
433 | { "r5", 5 }, | |
434 | { "r6", 6 }, | |
435 | { "r7", 7 }, | |
436 | { "r8", 8 }, | |
437 | { "r9", 9 }, | |
438 | ||
439 | { "rtoc", 2 }, /* Table of contents */ | |
440 | ||
441 | { "sdr1", 25 }, /* Storage Description Register 1 */ | |
442 | ||
443 | { "sp", 1 }, | |
444 | ||
445 | { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */ | |
446 | { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */ | |
7a899fff C |
447 | |
448 | { "v.0", 0 }, /* Vector registers */ | |
449 | { "v.1", 1 }, | |
450 | { "v.10", 10 }, | |
451 | { "v.11", 11 }, | |
452 | { "v.12", 12 }, | |
453 | { "v.13", 13 }, | |
454 | { "v.14", 14 }, | |
455 | { "v.15", 15 }, | |
456 | { "v.16", 16 }, | |
457 | { "v.17", 17 }, | |
458 | { "v.18", 18 }, | |
459 | { "v.19", 19 }, | |
460 | { "v.2", 2 }, | |
461 | { "v.20", 20 }, | |
462 | { "v.21", 21 }, | |
463 | { "v.22", 22 }, | |
464 | { "v.23", 23 }, | |
465 | { "v.24", 24 }, | |
466 | { "v.25", 25 }, | |
467 | { "v.26", 26 }, | |
468 | { "v.27", 27 }, | |
469 | { "v.28", 28 }, | |
470 | { "v.29", 29 }, | |
471 | { "v.3", 3 }, | |
472 | { "v.30", 30 }, | |
473 | { "v.31", 31 }, | |
474 | { "v.4", 4 }, | |
475 | { "v.5", 5 }, | |
476 | { "v.6", 6 }, | |
477 | { "v.7", 7 }, | |
478 | { "v.8", 8 }, | |
479 | { "v.9", 9 }, | |
480 | ||
481 | { "v0", 0 }, | |
482 | { "v1", 1 }, | |
483 | { "v10", 10 }, | |
484 | { "v11", 11 }, | |
485 | { "v12", 12 }, | |
486 | { "v13", 13 }, | |
487 | { "v14", 14 }, | |
488 | { "v15", 15 }, | |
489 | { "v16", 16 }, | |
490 | { "v17", 17 }, | |
491 | { "v18", 18 }, | |
492 | { "v19", 19 }, | |
493 | { "v2", 2 }, | |
494 | { "v20", 20 }, | |
495 | { "v21", 21 }, | |
496 | { "v22", 22 }, | |
497 | { "v23", 23 }, | |
498 | { "v24", 24 }, | |
499 | { "v25", 25 }, | |
500 | { "v26", 26 }, | |
501 | { "v27", 27 }, | |
502 | { "v28", 28 }, | |
503 | { "v29", 29 }, | |
504 | { "v3", 3 }, | |
505 | { "v30", 30 }, | |
506 | { "v31", 31 }, | |
507 | { "v4", 4 }, | |
508 | { "v5", 5 }, | |
509 | { "v6", 6 }, | |
510 | { "v7", 7 }, | |
511 | { "v8", 8 }, | |
512 | { "v9", 9 }, | |
252b5132 RH |
513 | |
514 | { "xer", 1 }, | |
515 | ||
516 | }; | |
517 | ||
518 | #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg)) | |
519 | ||
520 | /* Given NAME, find the register number associated with that name, return | |
521 | the integer value associated with the given name or -1 on failure. */ | |
522 | ||
523 | static int reg_name_search | |
524 | PARAMS ((const struct pd_reg *, int, const char * name)); | |
525 | ||
526 | static int | |
527 | reg_name_search (regs, regcount, name) | |
528 | const struct pd_reg *regs; | |
529 | int regcount; | |
530 | const char *name; | |
531 | { | |
532 | int middle, low, high; | |
533 | int cmp; | |
534 | ||
535 | low = 0; | |
536 | high = regcount - 1; | |
537 | ||
538 | do | |
539 | { | |
540 | middle = (low + high) / 2; | |
541 | cmp = strcasecmp (name, regs[middle].name); | |
542 | if (cmp < 0) | |
543 | high = middle - 1; | |
544 | else if (cmp > 0) | |
545 | low = middle + 1; | |
546 | else | |
547 | return regs[middle].value; | |
548 | } | |
549 | while (low <= high); | |
550 | ||
551 | return -1; | |
552 | } | |
553 | ||
554 | /* | |
555 | * Summary of register_name(). | |
556 | * | |
557 | * in: Input_line_pointer points to 1st char of operand. | |
558 | * | |
559 | * out: A expressionS. | |
560 | * The operand may have been a register: in this case, X_op == O_register, | |
561 | * X_add_number is set to the register number, and truth is returned. | |
562 | * Input_line_pointer->(next non-blank) char after operand, or is in its | |
563 | * original state. | |
564 | */ | |
565 | ||
566 | static boolean | |
567 | register_name (expressionP) | |
568 | expressionS *expressionP; | |
569 | { | |
570 | int reg_number; | |
571 | char *name; | |
572 | char *start; | |
573 | char c; | |
574 | ||
575 | /* Find the spelling of the operand */ | |
576 | start = name = input_line_pointer; | |
577 | if (name[0] == '%' && isalpha (name[1])) | |
578 | name = ++input_line_pointer; | |
579 | ||
580 | else if (!reg_names_p || !isalpha (name[0])) | |
581 | return false; | |
582 | ||
583 | c = get_symbol_end (); | |
584 | reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name); | |
585 | ||
586 | /* look to see if it's in the register table */ | |
587 | if (reg_number >= 0) | |
588 | { | |
589 | expressionP->X_op = O_register; | |
590 | expressionP->X_add_number = reg_number; | |
591 | ||
592 | /* make the rest nice */ | |
593 | expressionP->X_add_symbol = NULL; | |
594 | expressionP->X_op_symbol = NULL; | |
595 | *input_line_pointer = c; /* put back the delimiting char */ | |
596 | return true; | |
597 | } | |
598 | else | |
599 | { | |
600 | /* reset the line as if we had not done anything */ | |
601 | *input_line_pointer = c; /* put back the delimiting char */ | |
602 | input_line_pointer = start; /* reset input_line pointer */ | |
603 | return false; | |
604 | } | |
605 | } | |
606 | \f | |
607 | /* This function is called for each symbol seen in an expression. It | |
608 | handles the special parsing which PowerPC assemblers are supposed | |
609 | to use for condition codes. */ | |
610 | ||
611 | /* Whether to do the special parsing. */ | |
612 | static boolean cr_operand; | |
613 | ||
614 | /* Names to recognize in a condition code. This table is sorted. */ | |
615 | static const struct pd_reg cr_names[] = | |
616 | { | |
617 | { "cr0", 0 }, | |
618 | { "cr1", 1 }, | |
619 | { "cr2", 2 }, | |
620 | { "cr3", 3 }, | |
621 | { "cr4", 4 }, | |
622 | { "cr5", 5 }, | |
623 | { "cr6", 6 }, | |
624 | { "cr7", 7 }, | |
625 | { "eq", 2 }, | |
626 | { "gt", 1 }, | |
627 | { "lt", 0 }, | |
628 | { "so", 3 }, | |
629 | { "un", 3 } | |
630 | }; | |
631 | ||
632 | /* Parsing function. This returns non-zero if it recognized an | |
633 | expression. */ | |
634 | ||
635 | int | |
636 | ppc_parse_name (name, expr) | |
637 | const char *name; | |
638 | expressionS *expr; | |
639 | { | |
640 | int val; | |
641 | ||
642 | if (! cr_operand) | |
643 | return 0; | |
644 | ||
645 | val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0], | |
646 | name); | |
647 | if (val < 0) | |
648 | return 0; | |
649 | ||
650 | expr->X_op = O_constant; | |
651 | expr->X_add_number = val; | |
652 | ||
653 | return 1; | |
654 | } | |
655 | \f | |
656 | /* Local variables. */ | |
657 | ||
658 | /* The type of processor we are assembling for. This is one or more | |
659 | of the PPC_OPCODE flags defined in opcode/ppc.h. */ | |
660 | static int ppc_cpu = 0; | |
661 | ||
662 | /* The size of the processor we are assembling for. This is either | |
663 | PPC_OPCODE_32 or PPC_OPCODE_64. */ | |
92161534 | 664 | static unsigned long ppc_size = PPC_OPCODE_32; |
252b5132 | 665 | |
7f6d05e8 CP |
666 | /* Whether to target xcoff64 */ |
667 | static int ppc_xcoff64 = 0; | |
668 | ||
252b5132 RH |
669 | /* Opcode hash table. */ |
670 | static struct hash_control *ppc_hash; | |
671 | ||
672 | /* Macro hash table. */ | |
673 | static struct hash_control *ppc_macro_hash; | |
674 | ||
675 | #ifdef OBJ_ELF | |
676 | /* What type of shared library support to use */ | |
677 | static enum { SHLIB_NONE, SHLIB_PIC, SHILB_MRELOCATABLE } shlib = SHLIB_NONE; | |
678 | ||
679 | /* Flags to set in the elf header */ | |
680 | static flagword ppc_flags = 0; | |
681 | ||
682 | /* Whether this is Solaris or not. */ | |
683 | #ifdef TARGET_SOLARIS_COMMENT | |
684 | #define SOLARIS_P true | |
685 | #else | |
686 | #define SOLARIS_P false | |
687 | #endif | |
688 | ||
689 | static boolean msolaris = SOLARIS_P; | |
690 | #endif | |
691 | ||
692 | #ifdef OBJ_XCOFF | |
693 | ||
694 | /* The RS/6000 assembler uses the .csect pseudo-op to generate code | |
695 | using a bunch of different sections. These assembler sections, | |
696 | however, are all encompassed within the .text or .data sections of | |
697 | the final output file. We handle this by using different | |
698 | subsegments within these main segments. */ | |
699 | ||
700 | /* Next subsegment to allocate within the .text segment. */ | |
701 | static subsegT ppc_text_subsegment = 2; | |
702 | ||
703 | /* Linked list of csects in the text section. */ | |
704 | static symbolS *ppc_text_csects; | |
705 | ||
706 | /* Next subsegment to allocate within the .data segment. */ | |
707 | static subsegT ppc_data_subsegment = 2; | |
708 | ||
709 | /* Linked list of csects in the data section. */ | |
710 | static symbolS *ppc_data_csects; | |
711 | ||
712 | /* The current csect. */ | |
713 | static symbolS *ppc_current_csect; | |
714 | ||
715 | /* The RS/6000 assembler uses a TOC which holds addresses of functions | |
716 | and variables. Symbols are put in the TOC with the .tc pseudo-op. | |
717 | A special relocation is used when accessing TOC entries. We handle | |
718 | the TOC as a subsegment within the .data segment. We set it up if | |
719 | we see a .toc pseudo-op, and save the csect symbol here. */ | |
720 | static symbolS *ppc_toc_csect; | |
721 | ||
722 | /* The first frag in the TOC subsegment. */ | |
723 | static fragS *ppc_toc_frag; | |
724 | ||
725 | /* The first frag in the first subsegment after the TOC in the .data | |
726 | segment. NULL if there are no subsegments after the TOC. */ | |
727 | static fragS *ppc_after_toc_frag; | |
728 | ||
729 | /* The current static block. */ | |
730 | static symbolS *ppc_current_block; | |
731 | ||
732 | /* The COFF debugging section; set by md_begin. This is not the | |
733 | .debug section, but is instead the secret BFD section which will | |
734 | cause BFD to set the section number of a symbol to N_DEBUG. */ | |
735 | static asection *ppc_coff_debug_section; | |
736 | ||
737 | #endif /* OBJ_XCOFF */ | |
738 | ||
739 | #ifdef TE_PE | |
740 | ||
741 | /* Various sections that we need for PE coff support. */ | |
742 | static segT ydata_section; | |
743 | static segT pdata_section; | |
744 | static segT reldata_section; | |
745 | static segT rdata_section; | |
746 | static segT tocdata_section; | |
747 | ||
748 | /* The current section and the previous section. See ppc_previous. */ | |
749 | static segT ppc_previous_section; | |
750 | static segT ppc_current_section; | |
751 | ||
752 | #endif /* TE_PE */ | |
753 | ||
754 | #ifdef OBJ_ELF | |
755 | symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */ | |
756 | #endif /* OBJ_ELF */ | |
757 | \f | |
758 | #ifdef OBJ_ELF | |
759 | CONST char *md_shortopts = "b:l:usm:K:VQ:"; | |
760 | #else | |
761 | CONST char *md_shortopts = "um:"; | |
762 | #endif | |
763 | struct option md_longopts[] = { | |
764 | {NULL, no_argument, NULL, 0} | |
765 | }; | |
766 | size_t md_longopts_size = sizeof(md_longopts); | |
767 | ||
768 | int | |
769 | md_parse_option (c, arg) | |
770 | int c; | |
771 | char *arg; | |
772 | { | |
773 | switch (c) | |
774 | { | |
775 | case 'u': | |
776 | /* -u means that any undefined symbols should be treated as | |
777 | external, which is the default for gas anyhow. */ | |
778 | break; | |
779 | ||
780 | #ifdef OBJ_ELF | |
781 | case 'l': | |
782 | /* Solaris as takes -le (presumably for little endian). For completeness | |
783 | sake, recognize -be also. */ | |
784 | if (strcmp (arg, "e") == 0) | |
785 | { | |
786 | target_big_endian = 0; | |
787 | set_target_endian = 1; | |
788 | } | |
789 | else | |
790 | return 0; | |
791 | ||
792 | break; | |
793 | ||
794 | case 'b': | |
795 | if (strcmp (arg, "e") == 0) | |
796 | { | |
797 | target_big_endian = 1; | |
798 | set_target_endian = 1; | |
799 | } | |
800 | else | |
801 | return 0; | |
802 | ||
803 | break; | |
804 | ||
805 | case 'K': | |
806 | /* Recognize -K PIC */ | |
807 | if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0) | |
808 | { | |
809 | shlib = SHLIB_PIC; | |
810 | ppc_flags |= EF_PPC_RELOCATABLE_LIB; | |
811 | } | |
812 | else | |
813 | return 0; | |
814 | ||
815 | break; | |
816 | #endif | |
817 | ||
7f6d05e8 CP |
818 | /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */ |
819 | case 'a': | |
820 | if (strcmp (arg, "64") == 0) | |
821 | ppc_xcoff64 = 1; | |
822 | else if (strcmp (arg, "32") == 0) | |
823 | ppc_xcoff64 = 0; | |
824 | else | |
825 | return 0; | |
826 | break; | |
827 | ||
252b5132 RH |
828 | case 'm': |
829 | /* -mpwrx and -mpwr2 mean to assemble for the IBM POWER/2 | |
830 | (RIOS2). */ | |
831 | if (strcmp (arg, "pwrx") == 0 || strcmp (arg, "pwr2") == 0) | |
832 | ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_POWER2; | |
833 | /* -mpwr means to assemble for the IBM POWER (RIOS1). */ | |
834 | else if (strcmp (arg, "pwr") == 0) | |
835 | ppc_cpu = PPC_OPCODE_POWER; | |
836 | /* -m601 means to assemble for the Motorola PowerPC 601, which includes | |
837 | instructions that are holdovers from the Power. */ | |
838 | else if (strcmp (arg, "601") == 0) | |
839 | ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_601; | |
840 | /* -mppc, -mppc32, -m603, and -m604 mean to assemble for the | |
841 | Motorola PowerPC 603/604. */ | |
842 | else if (strcmp (arg, "ppc") == 0 | |
843 | || strcmp (arg, "ppc32") == 0 | |
844 | || strcmp (arg, "403") == 0 | |
845 | || strcmp (arg, "603") == 0 | |
846 | || strcmp (arg, "604") == 0) | |
847 | ppc_cpu = PPC_OPCODE_PPC; | |
7a899fff C |
848 | else if (strcmp (arg, "7400") == 0) |
849 | ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_ALTIVEC; | |
252b5132 RH |
850 | /* -mppc64 and -m620 mean to assemble for the 64-bit PowerPC |
851 | 620. */ | |
852 | else if (strcmp (arg, "ppc64") == 0 || strcmp (arg, "620") == 0) | |
853 | { | |
854 | ppc_cpu = PPC_OPCODE_PPC; | |
855 | ppc_size = PPC_OPCODE_64; | |
856 | } | |
d0e9a01c RH |
857 | else if (strcmp (arg, "ppc64bridge") == 0) |
858 | { | |
859 | ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_64_BRIDGE; | |
860 | ppc_size = PPC_OPCODE_64; | |
861 | } | |
252b5132 RH |
862 | /* -mcom means assemble for the common intersection between Power |
863 | and PowerPC. At present, we just allow the union, rather | |
864 | than the intersection. */ | |
865 | else if (strcmp (arg, "com") == 0) | |
866 | ppc_cpu = PPC_OPCODE_COMMON; | |
867 | /* -many means to assemble for any architecture (PWR/PWRX/PPC). */ | |
868 | else if (strcmp (arg, "any") == 0) | |
869 | ppc_cpu = PPC_OPCODE_ANY; | |
870 | ||
871 | else if (strcmp (arg, "regnames") == 0) | |
872 | reg_names_p = true; | |
873 | ||
874 | else if (strcmp (arg, "no-regnames") == 0) | |
875 | reg_names_p = false; | |
876 | ||
877 | #ifdef OBJ_ELF | |
878 | /* -mrelocatable/-mrelocatable-lib -- warn about initializations that require relocation */ | |
879 | else if (strcmp (arg, "relocatable") == 0) | |
880 | { | |
881 | shlib = SHILB_MRELOCATABLE; | |
882 | ppc_flags |= EF_PPC_RELOCATABLE; | |
883 | } | |
884 | ||
885 | else if (strcmp (arg, "relocatable-lib") == 0) | |
886 | { | |
887 | shlib = SHILB_MRELOCATABLE; | |
888 | ppc_flags |= EF_PPC_RELOCATABLE_LIB; | |
889 | } | |
890 | ||
891 | /* -memb, set embedded bit */ | |
892 | else if (strcmp (arg, "emb") == 0) | |
893 | ppc_flags |= EF_PPC_EMB; | |
894 | ||
895 | /* -mlittle/-mbig set the endianess */ | |
896 | else if (strcmp (arg, "little") == 0 || strcmp (arg, "little-endian") == 0) | |
897 | { | |
898 | target_big_endian = 0; | |
899 | set_target_endian = 1; | |
900 | } | |
901 | ||
902 | else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0) | |
903 | { | |
904 | target_big_endian = 1; | |
905 | set_target_endian = 1; | |
906 | } | |
907 | ||
908 | else if (strcmp (arg, "solaris") == 0) | |
909 | { | |
910 | msolaris = true; | |
911 | ppc_comment_chars = ppc_solaris_comment_chars; | |
912 | } | |
913 | ||
914 | else if (strcmp (arg, "no-solaris") == 0) | |
915 | { | |
916 | msolaris = false; | |
917 | ppc_comment_chars = ppc_eabi_comment_chars; | |
918 | } | |
919 | #endif | |
920 | else | |
921 | { | |
922 | as_bad (_("invalid switch -m%s"), arg); | |
923 | return 0; | |
924 | } | |
925 | break; | |
926 | ||
927 | #ifdef OBJ_ELF | |
928 | /* -V: SVR4 argument to print version ID. */ | |
929 | case 'V': | |
930 | print_version_id (); | |
931 | break; | |
932 | ||
933 | /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section | |
934 | should be emitted or not. FIXME: Not implemented. */ | |
935 | case 'Q': | |
936 | break; | |
937 | ||
938 | /* Solaris takes -s to specify that .stabs go in a .stabs section, | |
939 | rather than .stabs.excl, which is ignored by the linker. | |
940 | FIXME: Not implemented. */ | |
941 | case 's': | |
942 | if (arg) | |
943 | return 0; | |
944 | ||
945 | break; | |
946 | #endif | |
947 | ||
948 | default: | |
949 | return 0; | |
950 | } | |
951 | ||
952 | return 1; | |
953 | } | |
954 | ||
955 | void | |
956 | md_show_usage (stream) | |
957 | FILE *stream; | |
958 | { | |
959 | fprintf(stream, _("\ | |
960 | PowerPC options:\n\ | |
961 | -u ignored\n\ | |
962 | -mpwrx, -mpwr2 generate code for IBM POWER/2 (RIOS2)\n\ | |
963 | -mpwr generate code for IBM POWER (RIOS1)\n\ | |
964 | -m601 generate code for Motorola PowerPC 601\n\ | |
965 | -mppc, -mppc32, -m403, -m603, -m604\n\ | |
966 | generate code for Motorola PowerPC 603/604\n\ | |
967 | -mppc64, -m620 generate code for Motorola PowerPC 620\n\ | |
d0e9a01c | 968 | -mppc64bridge generate code for PowerPC 64, including bridge insns\n\ |
252b5132 RH |
969 | -mcom generate code Power/PowerPC common instructions\n\ |
970 | -many generate code for any architecture (PWR/PWRX/PPC)\n\ | |
971 | -mregnames Allow symbolic names for registers\n\ | |
972 | -mno-regnames Do not allow symbolic names for registers\n")); | |
973 | #ifdef OBJ_ELF | |
974 | fprintf(stream, _("\ | |
975 | -mrelocatable support for GCC's -mrelocatble option\n\ | |
976 | -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\ | |
977 | -memb set PPC_EMB bit in ELF flags\n\ | |
978 | -mlittle, -mlittle-endian\n\ | |
979 | generate code for a little endian machine\n\ | |
980 | -mbig, -mbig-endian generate code for a big endian machine\n\ | |
981 | -msolaris generate code for Solaris\n\ | |
982 | -mno-solaris do not generate code for Solaris\n\ | |
983 | -V print assembler version number\n\ | |
984 | -Qy, -Qn ignored\n")); | |
985 | #endif | |
986 | } | |
987 | \f | |
988 | /* Set ppc_cpu if it is not already set. */ | |
989 | ||
990 | static void | |
991 | ppc_set_cpu () | |
992 | { | |
993 | const char *default_os = TARGET_OS; | |
994 | const char *default_cpu = TARGET_CPU; | |
995 | ||
996 | if (ppc_cpu == 0) | |
997 | { | |
998 | if (strncmp (default_os, "aix", 3) == 0 | |
999 | && default_os[3] >= '4' && default_os[3] <= '9') | |
1000 | ppc_cpu = PPC_OPCODE_COMMON; | |
1001 | else if (strncmp (default_os, "aix3", 4) == 0) | |
1002 | ppc_cpu = PPC_OPCODE_POWER; | |
1003 | else if (strcmp (default_cpu, "rs6000") == 0) | |
1004 | ppc_cpu = PPC_OPCODE_POWER; | |
1005 | else if (strcmp (default_cpu, "powerpc") == 0 | |
1006 | || strcmp (default_cpu, "powerpcle") == 0) | |
1007 | ppc_cpu = PPC_OPCODE_PPC; | |
1008 | else | |
1009 | as_fatal (_("Unknown default cpu = %s, os = %s"), default_cpu, default_os); | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | /* Figure out the BFD architecture to use. */ | |
1014 | ||
1015 | enum bfd_architecture | |
1016 | ppc_arch () | |
1017 | { | |
1018 | const char *default_cpu = TARGET_CPU; | |
1019 | ppc_set_cpu (); | |
1020 | ||
1021 | if ((ppc_cpu & PPC_OPCODE_PPC) != 0) | |
1022 | return bfd_arch_powerpc; | |
1023 | else if ((ppc_cpu & PPC_OPCODE_POWER) != 0) | |
1024 | return bfd_arch_rs6000; | |
1025 | else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0) | |
1026 | { | |
1027 | if (strcmp (default_cpu, "rs6000") == 0) | |
1028 | return bfd_arch_rs6000; | |
1029 | else if (strcmp (default_cpu, "powerpc") == 0 | |
1030 | || strcmp (default_cpu, "powerpcle") == 0) | |
1031 | return bfd_arch_powerpc; | |
1032 | } | |
1033 | ||
1034 | as_fatal (_("Neither Power nor PowerPC opcodes were selected.")); | |
1035 | return bfd_arch_unknown; | |
1036 | } | |
1037 | ||
7f6d05e8 CP |
1038 | unsigned long |
1039 | ppc_mach () | |
1040 | { | |
1041 | return (ppc_size == PPC_OPCODE_64) ? 620 : 0; | |
1042 | } | |
1043 | ||
1044 | int | |
1045 | ppc_subseg_align() | |
1046 | { | |
1047 | return (ppc_xcoff64) ? 3 : 2; | |
1048 | } | |
1049 | ||
1050 | extern char* | |
1051 | ppc_target_format() | |
1052 | { | |
1053 | #ifdef OBJ_COFF | |
1054 | #ifdef TE_PE | |
1055 | return (target_big_endian ? "pe-powerpc" : "pe-powerpcle"); | |
1056 | #elif TE_POWERMAC | |
1057 | #else | |
1058 | return (ppc_xcoff64 ? "aixcoff64-rs6000" : "aixcoff-rs6000"); | |
1059 | #endif | |
1060 | #ifdef TE_POWERMAC | |
1061 | return "xcoff-powermac"; | |
1062 | #endif | |
1063 | #endif | |
1064 | #ifdef OBJ_ELF | |
1065 | return (target_big_endian ? "elf32-powerpc" : "elf32-powerpcle"); | |
1066 | #endif | |
1067 | } | |
1068 | ||
252b5132 RH |
1069 | /* This function is called when the assembler starts up. It is called |
1070 | after the options have been parsed and the output file has been | |
1071 | opened. */ | |
1072 | ||
1073 | void | |
1074 | md_begin () | |
1075 | { | |
1076 | register const struct powerpc_opcode *op; | |
1077 | const struct powerpc_opcode *op_end; | |
1078 | const struct powerpc_macro *macro; | |
1079 | const struct powerpc_macro *macro_end; | |
1080 | boolean dup_insn = false; | |
1081 | ||
1082 | ppc_set_cpu (); | |
1083 | ||
1084 | #ifdef OBJ_ELF | |
1085 | /* Set the ELF flags if desired. */ | |
1086 | if (ppc_flags && !msolaris) | |
1087 | bfd_set_private_flags (stdoutput, ppc_flags); | |
1088 | #endif | |
1089 | ||
1090 | /* Insert the opcodes into a hash table. */ | |
1091 | ppc_hash = hash_new (); | |
1092 | ||
1093 | op_end = powerpc_opcodes + powerpc_num_opcodes; | |
1094 | for (op = powerpc_opcodes; op < op_end; op++) | |
1095 | { | |
1096 | know ((op->opcode & op->mask) == op->opcode); | |
1097 | ||
1098 | if ((op->flags & ppc_cpu) != 0 | |
1099 | && ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0 | |
d0e9a01c RH |
1100 | || (op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == ppc_size |
1101 | || (ppc_cpu & PPC_OPCODE_64_BRIDGE) != 0)) | |
252b5132 RH |
1102 | { |
1103 | const char *retval; | |
1104 | ||
1105 | retval = hash_insert (ppc_hash, op->name, (PTR) op); | |
1106 | if (retval != (const char *) NULL) | |
1107 | { | |
1108 | /* Ignore Power duplicates for -m601 */ | |
1109 | if ((ppc_cpu & PPC_OPCODE_601) != 0 | |
1110 | && (op->flags & PPC_OPCODE_POWER) != 0) | |
1111 | continue; | |
1112 | ||
1113 | as_bad (_("Internal assembler error for instruction %s"), op->name); | |
1114 | dup_insn = true; | |
1115 | } | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | /* Insert the macros into a hash table. */ | |
1120 | ppc_macro_hash = hash_new (); | |
1121 | ||
1122 | macro_end = powerpc_macros + powerpc_num_macros; | |
1123 | for (macro = powerpc_macros; macro < macro_end; macro++) | |
1124 | { | |
1125 | if ((macro->flags & ppc_cpu) != 0) | |
1126 | { | |
1127 | const char *retval; | |
1128 | ||
1129 | retval = hash_insert (ppc_macro_hash, macro->name, (PTR) macro); | |
1130 | if (retval != (const char *) NULL) | |
1131 | { | |
1132 | as_bad (_("Internal assembler error for macro %s"), macro->name); | |
1133 | dup_insn = true; | |
1134 | } | |
1135 | } | |
1136 | } | |
1137 | ||
1138 | if (dup_insn) | |
1139 | abort (); | |
1140 | ||
1141 | /* Tell the main code what the endianness is if it is not overidden by the user. */ | |
1142 | if (!set_target_endian) | |
1143 | { | |
1144 | set_target_endian = 1; | |
1145 | target_big_endian = PPC_BIG_ENDIAN; | |
1146 | } | |
1147 | ||
1148 | #ifdef OBJ_XCOFF | |
1149 | ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG); | |
1150 | ||
1151 | /* Create dummy symbols to serve as initial csects. This forces the | |
1152 | text csects to precede the data csects. These symbols will not | |
1153 | be output. */ | |
1154 | ppc_text_csects = symbol_make ("dummy\001"); | |
809ffe0d | 1155 | symbol_get_tc (ppc_text_csects)->within = ppc_text_csects; |
252b5132 | 1156 | ppc_data_csects = symbol_make ("dummy\001"); |
809ffe0d | 1157 | symbol_get_tc (ppc_data_csects)->within = ppc_data_csects; |
252b5132 RH |
1158 | #endif |
1159 | ||
1160 | #ifdef TE_PE | |
1161 | ||
1162 | ppc_current_section = text_section; | |
1163 | ppc_previous_section = 0; | |
1164 | ||
1165 | #endif | |
1166 | } | |
1167 | ||
1168 | /* Insert an operand value into an instruction. */ | |
1169 | ||
1170 | static unsigned long | |
1171 | ppc_insert_operand (insn, operand, val, file, line) | |
1172 | unsigned long insn; | |
1173 | const struct powerpc_operand *operand; | |
1174 | offsetT val; | |
1175 | char *file; | |
1176 | unsigned int line; | |
1177 | { | |
1178 | if (operand->bits != 32) | |
1179 | { | |
1180 | long min, max; | |
1181 | offsetT test; | |
1182 | ||
1183 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) | |
1184 | { | |
d0e9a01c | 1185 | if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0) |
252b5132 RH |
1186 | max = (1 << operand->bits) - 1; |
1187 | else | |
1188 | max = (1 << (operand->bits - 1)) - 1; | |
1189 | min = - (1 << (operand->bits - 1)); | |
1190 | ||
1191 | if (ppc_size == PPC_OPCODE_32) | |
1192 | { | |
1193 | /* Some people write 32 bit hex constants with the sign | |
1194 | extension done by hand. This shouldn't really be | |
1195 | valid, but, to permit this code to assemble on a 64 | |
1196 | bit host, we sign extend the 32 bit value. */ | |
1197 | if (val > 0 | |
92161534 ILT |
1198 | && (val & (offsetT) 0x80000000) != 0 |
1199 | && (val & (offsetT) 0xffffffff) == val) | |
252b5132 RH |
1200 | { |
1201 | val -= 0x80000000; | |
1202 | val -= 0x80000000; | |
1203 | } | |
1204 | } | |
1205 | } | |
1206 | else | |
1207 | { | |
1208 | max = (1 << operand->bits) - 1; | |
1209 | min = 0; | |
1210 | } | |
1211 | ||
1212 | if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0) | |
1213 | test = - val; | |
1214 | else | |
1215 | test = val; | |
1216 | ||
1217 | if (test < (offsetT) min || test > (offsetT) max) | |
1218 | { | |
1219 | const char *err = | |
1220 | _("operand out of range (%s not between %ld and %ld)"); | |
1221 | char buf[100]; | |
1222 | ||
1223 | sprint_value (buf, test); | |
1224 | if (file == (char *) NULL) | |
1225 | as_bad (err, buf, min, max); | |
1226 | else | |
1227 | as_bad_where (file, line, err, buf, min, max); | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | if (operand->insert) | |
1232 | { | |
1233 | const char *errmsg; | |
1234 | ||
1235 | errmsg = NULL; | |
1236 | insn = (*operand->insert) (insn, (long) val, &errmsg); | |
1237 | if (errmsg != (const char *) NULL) | |
1238 | as_bad (errmsg); | |
1239 | } | |
1240 | else | |
1241 | insn |= (((long) val & ((1 << operand->bits) - 1)) | |
1242 | << operand->shift); | |
1243 | ||
1244 | return insn; | |
1245 | } | |
1246 | ||
1247 | \f | |
1248 | #ifdef OBJ_ELF | |
1249 | /* Parse @got, etc. and return the desired relocation. */ | |
1250 | static bfd_reloc_code_real_type | |
1251 | ppc_elf_suffix (str_p, exp_p) | |
1252 | char **str_p; | |
1253 | expressionS *exp_p; | |
1254 | { | |
1255 | struct map_bfd { | |
1256 | char *string; | |
1257 | int length; | |
1258 | bfd_reloc_code_real_type reloc; | |
1259 | }; | |
1260 | ||
1261 | char ident[20]; | |
1262 | char *str = *str_p; | |
1263 | char *str2; | |
1264 | int ch; | |
1265 | int len; | |
1266 | struct map_bfd *ptr; | |
1267 | ||
1268 | #define MAP(str,reloc) { str, sizeof(str)-1, reloc } | |
1269 | ||
1270 | static struct map_bfd mapping[] = { | |
1271 | MAP ("l", BFD_RELOC_LO16), | |
1272 | MAP ("h", BFD_RELOC_HI16), | |
1273 | MAP ("ha", BFD_RELOC_HI16_S), | |
1274 | MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN), | |
1275 | MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN), | |
1276 | MAP ("got", BFD_RELOC_16_GOTOFF), | |
1277 | MAP ("got@l", BFD_RELOC_LO16_GOTOFF), | |
1278 | MAP ("got@h", BFD_RELOC_HI16_GOTOFF), | |
1279 | MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF), | |
1280 | MAP ("fixup", BFD_RELOC_CTOR), /* warnings with -mrelocatable */ | |
1281 | MAP ("plt", BFD_RELOC_24_PLT_PCREL), | |
1282 | MAP ("pltrel24", BFD_RELOC_24_PLT_PCREL), | |
1283 | MAP ("copy", BFD_RELOC_PPC_COPY), | |
1284 | MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT), | |
1285 | MAP ("local24pc", BFD_RELOC_PPC_LOCAL24PC), | |
1286 | MAP ("local", BFD_RELOC_PPC_LOCAL24PC), | |
1287 | MAP ("pltrel", BFD_RELOC_32_PLT_PCREL), | |
1288 | MAP ("plt@l", BFD_RELOC_LO16_PLTOFF), | |
1289 | MAP ("plt@h", BFD_RELOC_HI16_PLTOFF), | |
1290 | MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF), | |
1291 | MAP ("sdarel", BFD_RELOC_GPREL16), | |
1292 | MAP ("sectoff", BFD_RELOC_32_BASEREL), | |
1293 | MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL), | |
1294 | MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL), | |
1295 | MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL), | |
1296 | MAP ("naddr", BFD_RELOC_PPC_EMB_NADDR32), | |
1297 | MAP ("naddr16", BFD_RELOC_PPC_EMB_NADDR16), | |
1298 | MAP ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO), | |
1299 | MAP ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI), | |
1300 | MAP ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA), | |
1301 | MAP ("sdai16", BFD_RELOC_PPC_EMB_SDAI16), | |
1302 | MAP ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL), | |
1303 | MAP ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16), | |
1304 | MAP ("sda21", BFD_RELOC_PPC_EMB_SDA21), | |
1305 | MAP ("mrkref", BFD_RELOC_PPC_EMB_MRKREF), | |
1306 | MAP ("relsect", BFD_RELOC_PPC_EMB_RELSEC16), | |
1307 | MAP ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO), | |
1308 | MAP ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI), | |
1309 | MAP ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA), | |
1310 | MAP ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD), | |
1311 | MAP ("relsda", BFD_RELOC_PPC_EMB_RELSDA), | |
1312 | MAP ("xgot", BFD_RELOC_PPC_TOC16), | |
1313 | ||
1314 | { (char *)0, 0, BFD_RELOC_UNUSED } | |
1315 | }; | |
1316 | ||
1317 | if (*str++ != '@') | |
1318 | return BFD_RELOC_UNUSED; | |
1319 | ||
1320 | for (ch = *str, str2 = ident; | |
1321 | (str2 < ident + sizeof (ident) - 1 | |
1322 | && (isalnum (ch) || ch == '@')); | |
1323 | ch = *++str) | |
1324 | { | |
1325 | *str2++ = (islower (ch)) ? ch : tolower (ch); | |
1326 | } | |
1327 | ||
1328 | *str2 = '\0'; | |
1329 | len = str2 - ident; | |
1330 | ||
1331 | ch = ident[0]; | |
1332 | for (ptr = &mapping[0]; ptr->length > 0; ptr++) | |
1333 | if (ch == ptr->string[0] | |
1334 | && len == ptr->length | |
1335 | && memcmp (ident, ptr->string, ptr->length) == 0) | |
1336 | { | |
1337 | if (exp_p->X_add_number != 0 | |
1338 | && (ptr->reloc == BFD_RELOC_16_GOTOFF | |
1339 | || ptr->reloc == BFD_RELOC_LO16_GOTOFF | |
1340 | || ptr->reloc == BFD_RELOC_HI16_GOTOFF | |
1341 | || ptr->reloc == BFD_RELOC_HI16_S_GOTOFF)) | |
1342 | as_warn (_("identifier+constant@got means identifier@got+constant")); | |
1343 | ||
1344 | /* Now check for identifier@suffix+constant */ | |
1345 | if (*str == '-' || *str == '+') | |
1346 | { | |
1347 | char *orig_line = input_line_pointer; | |
1348 | expressionS new_exp; | |
1349 | ||
1350 | input_line_pointer = str; | |
1351 | expression (&new_exp); | |
1352 | if (new_exp.X_op == O_constant) | |
1353 | { | |
1354 | exp_p->X_add_number += new_exp.X_add_number; | |
1355 | str = input_line_pointer; | |
1356 | } | |
1357 | ||
1358 | if (&input_line_pointer != str_p) | |
1359 | input_line_pointer = orig_line; | |
1360 | } | |
1361 | ||
1362 | *str_p = str; | |
1363 | return ptr->reloc; | |
1364 | } | |
1365 | ||
1366 | return BFD_RELOC_UNUSED; | |
1367 | } | |
1368 | ||
1369 | /* Like normal .long/.short/.word, except support @got, etc. */ | |
1370 | /* clobbers input_line_pointer, checks */ | |
1371 | /* end-of-line. */ | |
1372 | static void | |
1373 | ppc_elf_cons (nbytes) | |
1374 | register int nbytes; /* 1=.byte, 2=.word, 4=.long */ | |
1375 | { | |
1376 | expressionS exp; | |
1377 | bfd_reloc_code_real_type reloc; | |
1378 | ||
1379 | if (is_it_end_of_statement ()) | |
1380 | { | |
1381 | demand_empty_rest_of_line (); | |
1382 | return; | |
1383 | } | |
1384 | ||
1385 | do | |
1386 | { | |
1387 | expression (&exp); | |
1388 | if (exp.X_op == O_symbol | |
1389 | && *input_line_pointer == '@' | |
1390 | && (reloc = ppc_elf_suffix (&input_line_pointer, &exp)) != BFD_RELOC_UNUSED) | |
1391 | { | |
1392 | reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc); | |
1393 | int size = bfd_get_reloc_size (reloc_howto); | |
1394 | ||
1395 | if (size > nbytes) | |
1396 | as_bad (_("%s relocations do not fit in %d bytes\n"), reloc_howto->name, nbytes); | |
1397 | ||
1398 | else | |
1399 | { | |
1400 | register char *p = frag_more ((int) nbytes); | |
1401 | int offset = nbytes - size; | |
1402 | ||
1403 | fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size, &exp, 0, reloc); | |
1404 | } | |
1405 | } | |
1406 | else | |
1407 | emit_expr (&exp, (unsigned int) nbytes); | |
1408 | } | |
1409 | while (*input_line_pointer++ == ','); | |
1410 | ||
1411 | input_line_pointer--; /* Put terminator back into stream. */ | |
1412 | demand_empty_rest_of_line (); | |
1413 | } | |
1414 | ||
1415 | /* Solaris pseduo op to change to the .rodata section. */ | |
1416 | static void | |
1417 | ppc_elf_rdata (xxx) | |
1418 | int xxx; | |
1419 | { | |
1420 | char *save_line = input_line_pointer; | |
1421 | static char section[] = ".rodata\n"; | |
1422 | ||
1423 | /* Just pretend this is .section .rodata */ | |
1424 | input_line_pointer = section; | |
1425 | obj_elf_section (xxx); | |
1426 | ||
1427 | input_line_pointer = save_line; | |
1428 | } | |
1429 | ||
1430 | /* Pseudo op to make file scope bss items */ | |
1431 | static void | |
1432 | ppc_elf_lcomm(xxx) | |
92161534 | 1433 | int xxx ATTRIBUTE_UNUSED; |
252b5132 RH |
1434 | { |
1435 | register char *name; | |
1436 | register char c; | |
1437 | register char *p; | |
1438 | offsetT size; | |
1439 | register symbolS *symbolP; | |
1440 | offsetT align; | |
1441 | segT old_sec; | |
1442 | int old_subsec; | |
1443 | char *pfrag; | |
1444 | int align2; | |
1445 | ||
1446 | name = input_line_pointer; | |
1447 | c = get_symbol_end (); | |
1448 | ||
1449 | /* just after name is now '\0' */ | |
1450 | p = input_line_pointer; | |
1451 | *p = c; | |
1452 | SKIP_WHITESPACE (); | |
1453 | if (*input_line_pointer != ',') | |
1454 | { | |
1455 | as_bad (_("Expected comma after symbol-name: rest of line ignored.")); | |
1456 | ignore_rest_of_line (); | |
1457 | return; | |
1458 | } | |
1459 | ||
1460 | input_line_pointer++; /* skip ',' */ | |
1461 | if ((size = get_absolute_expression ()) < 0) | |
1462 | { | |
1463 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size); | |
1464 | ignore_rest_of_line (); | |
1465 | return; | |
1466 | } | |
1467 | ||
1468 | /* The third argument to .lcomm is the alignment. */ | |
1469 | if (*input_line_pointer != ',') | |
1470 | align = 8; | |
1471 | else | |
1472 | { | |
1473 | ++input_line_pointer; | |
1474 | align = get_absolute_expression (); | |
1475 | if (align <= 0) | |
1476 | { | |
1477 | as_warn (_("ignoring bad alignment")); | |
1478 | align = 8; | |
1479 | } | |
1480 | } | |
1481 | ||
1482 | *p = 0; | |
1483 | symbolP = symbol_find_or_make (name); | |
1484 | *p = c; | |
1485 | ||
1486 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) | |
1487 | { | |
1488 | as_bad (_("Ignoring attempt to re-define symbol `%s'."), | |
1489 | S_GET_NAME (symbolP)); | |
1490 | ignore_rest_of_line (); | |
1491 | return; | |
1492 | } | |
1493 | ||
1494 | if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size) | |
1495 | { | |
1496 | as_bad (_("Length of .lcomm \"%s\" is already %ld. Not changed to %ld."), | |
1497 | S_GET_NAME (symbolP), | |
1498 | (long) S_GET_VALUE (symbolP), | |
1499 | (long) size); | |
1500 | ||
1501 | ignore_rest_of_line (); | |
1502 | return; | |
1503 | } | |
1504 | ||
1505 | /* allocate_bss: */ | |
1506 | old_sec = now_seg; | |
1507 | old_subsec = now_subseg; | |
1508 | if (align) | |
1509 | { | |
1510 | /* convert to a power of 2 alignment */ | |
1511 | for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2); | |
1512 | if (align != 1) | |
1513 | { | |
1514 | as_bad (_("Common alignment not a power of 2")); | |
1515 | ignore_rest_of_line (); | |
1516 | return; | |
1517 | } | |
1518 | } | |
1519 | else | |
1520 | align2 = 0; | |
1521 | ||
1522 | record_alignment (bss_section, align2); | |
1523 | subseg_set (bss_section, 0); | |
1524 | if (align2) | |
1525 | frag_align (align2, 0, 0); | |
1526 | if (S_GET_SEGMENT (symbolP) == bss_section) | |
49309057 ILT |
1527 | symbol_get_frag (symbolP)->fr_symbol = 0; |
1528 | symbol_set_frag (symbolP, frag_now); | |
252b5132 RH |
1529 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size, |
1530 | (char *) 0); | |
1531 | *pfrag = 0; | |
1532 | S_SET_SIZE (symbolP, size); | |
1533 | S_SET_SEGMENT (symbolP, bss_section); | |
1534 | subseg_set (old_sec, old_subsec); | |
1535 | demand_empty_rest_of_line (); | |
1536 | } | |
1537 | ||
1538 | /* Validate any relocations emitted for -mrelocatable, possibly adding | |
1539 | fixups for word relocations in writable segments, so we can adjust | |
1540 | them at runtime. */ | |
1541 | static void | |
1542 | ppc_elf_validate_fix (fixp, seg) | |
1543 | fixS *fixp; | |
1544 | segT seg; | |
1545 | { | |
1546 | if (fixp->fx_done || fixp->fx_pcrel) | |
1547 | return; | |
1548 | ||
1549 | switch (shlib) | |
1550 | { | |
1551 | case SHLIB_NONE: | |
1552 | case SHLIB_PIC: | |
1553 | return; | |
1554 | ||
1555 | case SHILB_MRELOCATABLE: | |
1556 | if (fixp->fx_r_type <= BFD_RELOC_UNUSED | |
1557 | && fixp->fx_r_type != BFD_RELOC_16_GOTOFF | |
1558 | && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF | |
1559 | && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF | |
1560 | && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF | |
1561 | && fixp->fx_r_type != BFD_RELOC_32_BASEREL | |
1562 | && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL | |
1563 | && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL | |
1564 | && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL | |
1565 | && strcmp (segment_name (seg), ".got2") != 0 | |
1566 | && strcmp (segment_name (seg), ".dtors") != 0 | |
1567 | && strcmp (segment_name (seg), ".ctors") != 0 | |
1568 | && strcmp (segment_name (seg), ".fixup") != 0 | |
1569 | && strcmp (segment_name (seg), ".stab") != 0 | |
1570 | && strcmp (segment_name (seg), ".gcc_except_table") != 0 | |
1571 | && strcmp (segment_name (seg), ".eh_frame") != 0 | |
1572 | && strcmp (segment_name (seg), ".ex_shared") != 0) | |
1573 | { | |
1574 | if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0 | |
1575 | || fixp->fx_r_type != BFD_RELOC_CTOR) | |
1576 | { | |
1577 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1578 | _("Relocation cannot be done when using -mrelocatable")); | |
1579 | } | |
1580 | } | |
1581 | return; | |
1582 | } | |
1583 | } | |
1584 | #endif /* OBJ_ELF */ | |
1585 | \f | |
1586 | #ifdef TE_PE | |
1587 | ||
1588 | /* | |
1589 | * Summary of parse_toc_entry(). | |
1590 | * | |
1591 | * in: Input_line_pointer points to the '[' in one of: | |
1592 | * | |
1593 | * [toc] [tocv] [toc32] [toc64] | |
1594 | * | |
1595 | * Anything else is an error of one kind or another. | |
1596 | * | |
1597 | * out: | |
1598 | * return value: success or failure | |
1599 | * toc_kind: kind of toc reference | |
1600 | * input_line_pointer: | |
1601 | * success: first char after the ']' | |
1602 | * failure: unchanged | |
1603 | * | |
1604 | * settings: | |
1605 | * | |
1606 | * [toc] - rv == success, toc_kind = default_toc | |
1607 | * [tocv] - rv == success, toc_kind = data_in_toc | |
1608 | * [toc32] - rv == success, toc_kind = must_be_32 | |
1609 | * [toc64] - rv == success, toc_kind = must_be_64 | |
1610 | * | |
1611 | */ | |
1612 | ||
1613 | enum toc_size_qualifier | |
1614 | { | |
1615 | default_toc, /* The toc cell constructed should be the system default size */ | |
1616 | data_in_toc, /* This is a direct reference to a toc cell */ | |
1617 | must_be_32, /* The toc cell constructed must be 32 bits wide */ | |
1618 | must_be_64 /* The toc cell constructed must be 64 bits wide */ | |
1619 | }; | |
1620 | ||
1621 | static int | |
1622 | parse_toc_entry(toc_kind) | |
1623 | enum toc_size_qualifier *toc_kind; | |
1624 | { | |
1625 | char *start; | |
1626 | char *toc_spec; | |
1627 | char c; | |
1628 | enum toc_size_qualifier t; | |
1629 | ||
1630 | /* save the input_line_pointer */ | |
1631 | start = input_line_pointer; | |
1632 | ||
1633 | /* skip over the '[' , and whitespace */ | |
1634 | ++input_line_pointer; | |
1635 | SKIP_WHITESPACE (); | |
1636 | ||
1637 | /* find the spelling of the operand */ | |
1638 | toc_spec = input_line_pointer; | |
1639 | c = get_symbol_end (); | |
1640 | ||
1641 | if (strcmp(toc_spec, "toc") == 0) | |
1642 | { | |
1643 | t = default_toc; | |
1644 | } | |
1645 | else if (strcmp(toc_spec, "tocv") == 0) | |
1646 | { | |
1647 | t = data_in_toc; | |
1648 | } | |
1649 | else if (strcmp(toc_spec, "toc32") == 0) | |
1650 | { | |
1651 | t = must_be_32; | |
1652 | } | |
1653 | else if (strcmp(toc_spec, "toc64") == 0) | |
1654 | { | |
1655 | t = must_be_64; | |
1656 | } | |
1657 | else | |
1658 | { | |
1659 | as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec); | |
1660 | *input_line_pointer = c; /* put back the delimiting char */ | |
1661 | input_line_pointer = start; /* reset input_line pointer */ | |
1662 | return 0; | |
1663 | } | |
1664 | ||
1665 | /* now find the ']' */ | |
1666 | *input_line_pointer = c; /* put back the delimiting char */ | |
1667 | ||
1668 | SKIP_WHITESPACE (); /* leading whitespace could be there. */ | |
1669 | c = *input_line_pointer++; /* input_line_pointer->past char in c. */ | |
1670 | ||
1671 | if (c != ']') | |
1672 | { | |
1673 | as_bad (_("syntax error: expected `]', found `%c'"), c); | |
1674 | input_line_pointer = start; /* reset input_line pointer */ | |
1675 | return 0; | |
1676 | } | |
1677 | ||
1678 | *toc_kind = t; /* set return value */ | |
1679 | return 1; | |
1680 | } | |
1681 | #endif | |
1682 | \f | |
1683 | ||
1684 | /* We need to keep a list of fixups. We can't simply generate them as | |
1685 | we go, because that would require us to first create the frag, and | |
1686 | that would screw up references to ``.''. */ | |
1687 | ||
1688 | struct ppc_fixup | |
1689 | { | |
1690 | expressionS exp; | |
1691 | int opindex; | |
1692 | bfd_reloc_code_real_type reloc; | |
1693 | }; | |
1694 | ||
1695 | #define MAX_INSN_FIXUPS (5) | |
1696 | ||
1697 | /* This routine is called for each instruction to be assembled. */ | |
1698 | ||
1699 | void | |
1700 | md_assemble (str) | |
1701 | char *str; | |
1702 | { | |
1703 | char *s; | |
1704 | const struct powerpc_opcode *opcode; | |
1705 | unsigned long insn; | |
1706 | const unsigned char *opindex_ptr; | |
1707 | int skip_optional; | |
1708 | int need_paren; | |
1709 | int next_opindex; | |
1710 | struct ppc_fixup fixups[MAX_INSN_FIXUPS]; | |
1711 | int fc; | |
1712 | char *f; | |
1713 | int i; | |
1714 | #ifdef OBJ_ELF | |
1715 | bfd_reloc_code_real_type reloc; | |
1716 | #endif | |
1717 | ||
1718 | /* Get the opcode. */ | |
1719 | for (s = str; *s != '\0' && ! isspace (*s); s++) | |
1720 | ; | |
1721 | if (*s != '\0') | |
1722 | *s++ = '\0'; | |
1723 | ||
1724 | /* Look up the opcode in the hash table. */ | |
1725 | opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str); | |
1726 | if (opcode == (const struct powerpc_opcode *) NULL) | |
1727 | { | |
1728 | const struct powerpc_macro *macro; | |
1729 | ||
1730 | macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str); | |
1731 | if (macro == (const struct powerpc_macro *) NULL) | |
1732 | as_bad (_("Unrecognized opcode: `%s'"), str); | |
1733 | else | |
1734 | ppc_macro (s, macro); | |
1735 | ||
1736 | return; | |
1737 | } | |
1738 | ||
1739 | insn = opcode->opcode; | |
1740 | ||
1741 | str = s; | |
1742 | while (isspace (*str)) | |
1743 | ++str; | |
1744 | ||
1745 | /* PowerPC operands are just expressions. The only real issue is | |
1746 | that a few operand types are optional. All cases which might use | |
1747 | an optional operand separate the operands only with commas (in | |
1748 | some cases parentheses are used, as in ``lwz 1,0(1)'' but such | |
1749 | cases never have optional operands). There is never more than | |
1750 | one optional operand for an instruction. So, before we start | |
1751 | seriously parsing the operands, we check to see if we have an | |
1752 | optional operand, and, if we do, we count the number of commas to | |
1753 | see whether the operand should be omitted. */ | |
1754 | skip_optional = 0; | |
1755 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) | |
1756 | { | |
1757 | const struct powerpc_operand *operand; | |
1758 | ||
1759 | operand = &powerpc_operands[*opindex_ptr]; | |
1760 | if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0) | |
1761 | { | |
1762 | unsigned int opcount; | |
1763 | ||
1764 | /* There is an optional operand. Count the number of | |
1765 | commas in the input line. */ | |
1766 | if (*str == '\0') | |
1767 | opcount = 0; | |
1768 | else | |
1769 | { | |
1770 | opcount = 1; | |
1771 | s = str; | |
1772 | while ((s = strchr (s, ',')) != (char *) NULL) | |
1773 | { | |
1774 | ++opcount; | |
1775 | ++s; | |
1776 | } | |
1777 | } | |
1778 | ||
1779 | /* If there are fewer operands in the line then are called | |
1780 | for by the instruction, we want to skip the optional | |
1781 | operand. */ | |
1782 | if (opcount < strlen (opcode->operands)) | |
1783 | skip_optional = 1; | |
1784 | ||
1785 | break; | |
1786 | } | |
1787 | } | |
1788 | ||
1789 | /* Gather the operands. */ | |
1790 | need_paren = 0; | |
1791 | next_opindex = 0; | |
1792 | fc = 0; | |
1793 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) | |
1794 | { | |
1795 | const struct powerpc_operand *operand; | |
1796 | const char *errmsg; | |
1797 | char *hold; | |
1798 | expressionS ex; | |
1799 | char endc; | |
1800 | ||
1801 | if (next_opindex == 0) | |
1802 | operand = &powerpc_operands[*opindex_ptr]; | |
1803 | else | |
1804 | { | |
1805 | operand = &powerpc_operands[next_opindex]; | |
1806 | next_opindex = 0; | |
1807 | } | |
1808 | ||
1809 | errmsg = NULL; | |
1810 | ||
1811 | /* If this is a fake operand, then we do not expect anything | |
1812 | from the input. */ | |
1813 | if ((operand->flags & PPC_OPERAND_FAKE) != 0) | |
1814 | { | |
1815 | insn = (*operand->insert) (insn, 0L, &errmsg); | |
1816 | if (errmsg != (const char *) NULL) | |
1817 | as_bad (errmsg); | |
1818 | continue; | |
1819 | } | |
1820 | ||
1821 | /* If this is an optional operand, and we are skipping it, just | |
1822 | insert a zero. */ | |
1823 | if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0 | |
1824 | && skip_optional) | |
1825 | { | |
1826 | if (operand->insert) | |
1827 | { | |
1828 | insn = (*operand->insert) (insn, 0L, &errmsg); | |
1829 | if (errmsg != (const char *) NULL) | |
1830 | as_bad (errmsg); | |
1831 | } | |
1832 | if ((operand->flags & PPC_OPERAND_NEXT) != 0) | |
1833 | next_opindex = *opindex_ptr + 1; | |
1834 | continue; | |
1835 | } | |
1836 | ||
1837 | /* Gather the operand. */ | |
1838 | hold = input_line_pointer; | |
1839 | input_line_pointer = str; | |
1840 | ||
1841 | #ifdef TE_PE | |
1842 | if (*input_line_pointer == '[') | |
1843 | { | |
1844 | /* We are expecting something like the second argument here: | |
1845 | ||
1846 | lwz r4,[toc].GS.0.static_int(rtoc) | |
1847 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
1848 | The argument following the `]' must be a symbol name, and the | |
1849 | register must be the toc register: 'rtoc' or '2' | |
1850 | ||
1851 | The effect is to 0 as the displacement field | |
1852 | in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or | |
1853 | the appropriate variation) reloc against it based on the symbol. | |
1854 | The linker will build the toc, and insert the resolved toc offset. | |
1855 | ||
1856 | Note: | |
1857 | o The size of the toc entry is currently assumed to be | |
1858 | 32 bits. This should not be assumed to be a hard coded | |
1859 | number. | |
1860 | o In an effort to cope with a change from 32 to 64 bits, | |
1861 | there are also toc entries that are specified to be | |
1862 | either 32 or 64 bits: | |
1863 | lwz r4,[toc32].GS.0.static_int(rtoc) | |
1864 | lwz r4,[toc64].GS.0.static_int(rtoc) | |
1865 | These demand toc entries of the specified size, and the | |
1866 | instruction probably requires it. | |
1867 | */ | |
1868 | ||
1869 | int valid_toc; | |
1870 | enum toc_size_qualifier toc_kind; | |
1871 | bfd_reloc_code_real_type toc_reloc; | |
1872 | ||
1873 | /* go parse off the [tocXX] part */ | |
1874 | valid_toc = parse_toc_entry(&toc_kind); | |
1875 | ||
1876 | if (!valid_toc) | |
1877 | { | |
1878 | /* Note: message has already been issued. */ | |
1879 | /* FIXME: what sort of recovery should we do? */ | |
1880 | /* demand_rest_of_line(); return; ? */ | |
1881 | } | |
1882 | ||
1883 | /* Now get the symbol following the ']' */ | |
1884 | expression(&ex); | |
1885 | ||
1886 | switch (toc_kind) | |
1887 | { | |
1888 | case default_toc: | |
1889 | /* In this case, we may not have seen the symbol yet, since */ | |
1890 | /* it is allowed to appear on a .extern or .globl or just be */ | |
1891 | /* a label in the .data section. */ | |
1892 | toc_reloc = BFD_RELOC_PPC_TOC16; | |
1893 | break; | |
1894 | case data_in_toc: | |
1895 | /* 1. The symbol must be defined and either in the toc */ | |
1896 | /* section, or a global. */ | |
1897 | /* 2. The reloc generated must have the TOCDEFN flag set in */ | |
1898 | /* upper bit mess of the reloc type. */ | |
1899 | /* FIXME: It's a little confusing what the tocv qualifier can */ | |
1900 | /* be used for. At the very least, I've seen three */ | |
1901 | /* uses, only one of which I'm sure I can explain. */ | |
1902 | if (ex.X_op == O_symbol) | |
1903 | { | |
1904 | assert (ex.X_add_symbol != NULL); | |
fed9b18a ILT |
1905 | if (symbol_get_bfdsym (ex.X_add_symbol)->section |
1906 | != tocdata_section) | |
252b5132 RH |
1907 | { |
1908 | as_bad(_("[tocv] symbol is not a toc symbol")); | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | toc_reloc = BFD_RELOC_PPC_TOC16; | |
1913 | break; | |
1914 | case must_be_32: | |
1915 | /* FIXME: these next two specifically specify 32/64 bit toc */ | |
1916 | /* entries. We don't support them today. Is this the */ | |
1917 | /* right way to say that? */ | |
1918 | toc_reloc = BFD_RELOC_UNUSED; | |
1919 | as_bad (_("Unimplemented toc32 expression modifier")); | |
1920 | break; | |
1921 | case must_be_64: | |
1922 | /* FIXME: see above */ | |
1923 | toc_reloc = BFD_RELOC_UNUSED; | |
1924 | as_bad (_("Unimplemented toc64 expression modifier")); | |
1925 | break; | |
1926 | default: | |
1927 | fprintf(stderr, | |
1928 | _("Unexpected return value [%d] from parse_toc_entry!\n"), | |
1929 | toc_kind); | |
1930 | abort(); | |
1931 | break; | |
1932 | } | |
1933 | ||
1934 | /* We need to generate a fixup for this expression. */ | |
1935 | if (fc >= MAX_INSN_FIXUPS) | |
1936 | as_fatal (_("too many fixups")); | |
1937 | ||
1938 | fixups[fc].reloc = toc_reloc; | |
1939 | fixups[fc].exp = ex; | |
1940 | fixups[fc].opindex = *opindex_ptr; | |
1941 | ++fc; | |
1942 | ||
1943 | /* Ok. We've set up the fixup for the instruction. Now make it | |
1944 | look like the constant 0 was found here */ | |
1945 | ex.X_unsigned = 1; | |
1946 | ex.X_op = O_constant; | |
1947 | ex.X_add_number = 0; | |
1948 | ex.X_add_symbol = NULL; | |
1949 | ex.X_op_symbol = NULL; | |
1950 | } | |
1951 | ||
1952 | else | |
1953 | #endif /* TE_PE */ | |
1954 | { | |
1955 | if (! register_name (&ex)) | |
1956 | { | |
1957 | if ((operand->flags & PPC_OPERAND_CR) != 0) | |
1958 | cr_operand = true; | |
1959 | expression (&ex); | |
1960 | cr_operand = false; | |
1961 | } | |
1962 | } | |
1963 | ||
1964 | str = input_line_pointer; | |
1965 | input_line_pointer = hold; | |
1966 | ||
1967 | if (ex.X_op == O_illegal) | |
1968 | as_bad (_("illegal operand")); | |
1969 | else if (ex.X_op == O_absent) | |
1970 | as_bad (_("missing operand")); | |
1971 | else if (ex.X_op == O_register) | |
1972 | { | |
1973 | insn = ppc_insert_operand (insn, operand, ex.X_add_number, | |
1974 | (char *) NULL, 0); | |
1975 | } | |
1976 | else if (ex.X_op == O_constant) | |
1977 | { | |
1978 | #ifdef OBJ_ELF | |
1979 | /* Allow @HA, @L, @H on constants. */ | |
1980 | char *orig_str = str; | |
1981 | ||
1982 | if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED) | |
1983 | switch (reloc) | |
1984 | { | |
1985 | default: | |
1986 | str = orig_str; | |
1987 | break; | |
1988 | ||
1989 | case BFD_RELOC_LO16: | |
1990 | /* X_unsigned is the default, so if the user has done | |
1991 | something which cleared it, we always produce a | |
1992 | signed value. */ | |
1993 | if (ex.X_unsigned | |
1994 | && (operand->flags & PPC_OPERAND_SIGNED) == 0) | |
1995 | ex.X_add_number &= 0xffff; | |
1996 | else | |
1997 | ex.X_add_number = (((ex.X_add_number & 0xffff) | |
1998 | ^ 0x8000) | |
1999 | - 0x8000); | |
2000 | break; | |
2001 | ||
2002 | case BFD_RELOC_HI16: | |
2003 | ex.X_add_number = (ex.X_add_number >> 16) & 0xffff; | |
2004 | break; | |
2005 | ||
2006 | case BFD_RELOC_HI16_S: | |
f589a541 ILT |
2007 | ex.X_add_number = ((((ex.X_add_number >> 16) & 0xffff) |
2008 | + ((ex.X_add_number >> 15) & 1)) | |
2009 | & 0xffff); | |
252b5132 RH |
2010 | break; |
2011 | } | |
2012 | #endif | |
2013 | insn = ppc_insert_operand (insn, operand, ex.X_add_number, | |
2014 | (char *) NULL, 0); | |
2015 | } | |
2016 | #ifdef OBJ_ELF | |
2017 | else if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED) | |
2018 | { | |
2019 | /* For the absoulte forms of branchs, convert the PC relative form back into | |
2020 | the absolute. */ | |
2021 | if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0) | |
2022 | { | |
2023 | switch (reloc) | |
2024 | { | |
2025 | case BFD_RELOC_PPC_B26: | |
2026 | reloc = BFD_RELOC_PPC_BA26; | |
2027 | break; | |
2028 | case BFD_RELOC_PPC_B16: | |
2029 | reloc = BFD_RELOC_PPC_BA16; | |
2030 | break; | |
2031 | case BFD_RELOC_PPC_B16_BRTAKEN: | |
2032 | reloc = BFD_RELOC_PPC_BA16_BRTAKEN; | |
2033 | break; | |
2034 | case BFD_RELOC_PPC_B16_BRNTAKEN: | |
2035 | reloc = BFD_RELOC_PPC_BA16_BRNTAKEN; | |
2036 | break; | |
2037 | default: | |
2038 | break; | |
2039 | } | |
2040 | } | |
2041 | ||
2042 | /* We need to generate a fixup for this expression. */ | |
2043 | if (fc >= MAX_INSN_FIXUPS) | |
2044 | as_fatal (_("too many fixups")); | |
2045 | fixups[fc].exp = ex; | |
2046 | fixups[fc].opindex = 0; | |
2047 | fixups[fc].reloc = reloc; | |
2048 | ++fc; | |
2049 | } | |
2050 | #endif /* OBJ_ELF */ | |
2051 | ||
2052 | else | |
2053 | { | |
2054 | /* We need to generate a fixup for this expression. */ | |
2055 | if (fc >= MAX_INSN_FIXUPS) | |
2056 | as_fatal (_("too many fixups")); | |
2057 | fixups[fc].exp = ex; | |
2058 | fixups[fc].opindex = *opindex_ptr; | |
2059 | fixups[fc].reloc = BFD_RELOC_UNUSED; | |
2060 | ++fc; | |
2061 | } | |
2062 | ||
2063 | if (need_paren) | |
2064 | { | |
2065 | endc = ')'; | |
2066 | need_paren = 0; | |
2067 | } | |
2068 | else if ((operand->flags & PPC_OPERAND_PARENS) != 0) | |
2069 | { | |
2070 | endc = '('; | |
2071 | need_paren = 1; | |
2072 | } | |
2073 | else | |
2074 | endc = ','; | |
2075 | ||
2076 | /* The call to expression should have advanced str past any | |
2077 | whitespace. */ | |
2078 | if (*str != endc | |
2079 | && (endc != ',' || *str != '\0')) | |
2080 | { | |
2081 | as_bad (_("syntax error; found `%c' but expected `%c'"), *str, endc); | |
2082 | break; | |
2083 | } | |
2084 | ||
2085 | if (*str != '\0') | |
2086 | ++str; | |
2087 | } | |
2088 | ||
2089 | while (isspace (*str)) | |
2090 | ++str; | |
2091 | ||
2092 | if (*str != '\0') | |
2093 | as_bad (_("junk at end of line: `%s'"), str); | |
2094 | ||
2095 | /* Write out the instruction. */ | |
2096 | f = frag_more (4); | |
2097 | md_number_to_chars (f, insn, 4); | |
2098 | ||
2099 | /* Create any fixups. At this point we do not use a | |
2100 | bfd_reloc_code_real_type, but instead just use the | |
2101 | BFD_RELOC_UNUSED plus the operand index. This lets us easily | |
2102 | handle fixups for any operand type, although that is admittedly | |
2103 | not a very exciting feature. We pick a BFD reloc type in | |
2104 | md_apply_fix. */ | |
2105 | for (i = 0; i < fc; i++) | |
2106 | { | |
2107 | const struct powerpc_operand *operand; | |
2108 | ||
2109 | operand = &powerpc_operands[fixups[i].opindex]; | |
2110 | if (fixups[i].reloc != BFD_RELOC_UNUSED) | |
2111 | { | |
2112 | reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc); | |
2113 | int size; | |
2114 | int offset; | |
2115 | fixS *fixP; | |
2116 | ||
2117 | if (!reloc_howto) | |
2118 | abort (); | |
2119 | ||
2120 | size = bfd_get_reloc_size (reloc_howto); | |
2121 | offset = target_big_endian ? (4 - size) : 0; | |
2122 | ||
2123 | if (size < 1 || size > 4) | |
2124 | abort(); | |
2125 | ||
2126 | fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, size, | |
2127 | &fixups[i].exp, reloc_howto->pc_relative, | |
2128 | fixups[i].reloc); | |
2129 | ||
2130 | /* Turn off complaints that the addend is too large for things like | |
2131 | foo+100000@ha. */ | |
2132 | switch (fixups[i].reloc) | |
2133 | { | |
2134 | case BFD_RELOC_16_GOTOFF: | |
2135 | case BFD_RELOC_PPC_TOC16: | |
2136 | case BFD_RELOC_LO16: | |
2137 | case BFD_RELOC_HI16: | |
2138 | case BFD_RELOC_HI16_S: | |
2139 | fixP->fx_no_overflow = 1; | |
2140 | break; | |
2141 | default: | |
2142 | break; | |
2143 | } | |
2144 | } | |
2145 | else | |
2146 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, | |
2147 | &fixups[i].exp, | |
2148 | (operand->flags & PPC_OPERAND_RELATIVE) != 0, | |
2149 | ((bfd_reloc_code_real_type) | |
2150 | (fixups[i].opindex + (int) BFD_RELOC_UNUSED))); | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | /* Handle a macro. Gather all the operands, transform them as | |
2155 | described by the macro, and call md_assemble recursively. All the | |
2156 | operands are separated by commas; we don't accept parentheses | |
2157 | around operands here. */ | |
2158 | ||
2159 | static void | |
2160 | ppc_macro (str, macro) | |
2161 | char *str; | |
2162 | const struct powerpc_macro *macro; | |
2163 | { | |
2164 | char *operands[10]; | |
2165 | unsigned int count; | |
2166 | char *s; | |
2167 | unsigned int len; | |
2168 | const char *format; | |
2169 | int arg; | |
2170 | char *send; | |
2171 | char *complete; | |
2172 | ||
2173 | /* Gather the users operands into the operands array. */ | |
2174 | count = 0; | |
2175 | s = str; | |
2176 | while (1) | |
2177 | { | |
2178 | if (count >= sizeof operands / sizeof operands[0]) | |
2179 | break; | |
2180 | operands[count++] = s; | |
2181 | s = strchr (s, ','); | |
2182 | if (s == (char *) NULL) | |
2183 | break; | |
2184 | *s++ = '\0'; | |
2185 | } | |
2186 | ||
2187 | if (count != macro->operands) | |
2188 | { | |
2189 | as_bad (_("wrong number of operands")); | |
2190 | return; | |
2191 | } | |
2192 | ||
2193 | /* Work out how large the string must be (the size is unbounded | |
2194 | because it includes user input). */ | |
2195 | len = 0; | |
2196 | format = macro->format; | |
2197 | while (*format != '\0') | |
2198 | { | |
2199 | if (*format != '%') | |
2200 | { | |
2201 | ++len; | |
2202 | ++format; | |
2203 | } | |
2204 | else | |
2205 | { | |
2206 | arg = strtol (format + 1, &send, 10); | |
2207 | know (send != format && arg >= 0 && arg < count); | |
2208 | len += strlen (operands[arg]); | |
2209 | format = send; | |
2210 | } | |
2211 | } | |
2212 | ||
2213 | /* Put the string together. */ | |
2214 | complete = s = (char *) alloca (len + 1); | |
2215 | format = macro->format; | |
2216 | while (*format != '\0') | |
2217 | { | |
2218 | if (*format != '%') | |
2219 | *s++ = *format++; | |
2220 | else | |
2221 | { | |
2222 | arg = strtol (format + 1, &send, 10); | |
2223 | strcpy (s, operands[arg]); | |
2224 | s += strlen (s); | |
2225 | format = send; | |
2226 | } | |
2227 | } | |
2228 | *s = '\0'; | |
2229 | ||
2230 | /* Assemble the constructed instruction. */ | |
2231 | md_assemble (complete); | |
2232 | } | |
2233 | \f | |
2234 | #ifdef OBJ_ELF | |
2235 | /* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED */ | |
2236 | ||
2237 | int | |
2238 | ppc_section_letter (letter, ptr_msg) | |
2239 | int letter; | |
2240 | char **ptr_msg; | |
2241 | { | |
2242 | if (letter == 'e') | |
2243 | return SHF_EXCLUDE; | |
2244 | ||
2245 | *ptr_msg = _("Bad .section directive: want a,w,x,e in string"); | |
2246 | return 0; | |
2247 | } | |
2248 | ||
2249 | int | |
9de8d8f1 RH |
2250 | ppc_section_word (str, len) |
2251 | char *str; | |
2252 | size_t len; | |
252b5132 | 2253 | { |
9de8d8f1 RH |
2254 | if (len == 7 && strncmp (str, "exclude", 7) == 0) |
2255 | return SHF_EXCLUDE; | |
252b5132 | 2256 | |
9de8d8f1 | 2257 | return -1; |
252b5132 RH |
2258 | } |
2259 | ||
2260 | int | |
9de8d8f1 RH |
2261 | ppc_section_type (str, len) |
2262 | char *str; | |
2263 | size_t len; | |
252b5132 | 2264 | { |
9de8d8f1 RH |
2265 | if (len == 7 && strncmp (str, "ordered", 7) == 0) |
2266 | return SHT_ORDERED; | |
252b5132 | 2267 | |
9de8d8f1 | 2268 | return -1; |
252b5132 RH |
2269 | } |
2270 | ||
2271 | int | |
2272 | ppc_section_flags (flags, attr, type) | |
2273 | int flags; | |
2274 | int attr; | |
2275 | int type; | |
2276 | { | |
2277 | if (type == SHT_ORDERED) | |
2278 | flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES; | |
2279 | ||
2280 | if (attr & SHF_EXCLUDE) | |
2281 | flags |= SEC_EXCLUDE; | |
2282 | ||
2283 | return flags; | |
2284 | } | |
2285 | #endif /* OBJ_ELF */ | |
2286 | ||
2287 | \f | |
2288 | /* Pseudo-op handling. */ | |
2289 | ||
2290 | /* The .byte pseudo-op. This is similar to the normal .byte | |
2291 | pseudo-op, but it can also take a single ASCII string. */ | |
2292 | ||
2293 | static void | |
2294 | ppc_byte (ignore) | |
92161534 | 2295 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2296 | { |
2297 | if (*input_line_pointer != '\"') | |
2298 | { | |
2299 | cons (1); | |
2300 | return; | |
2301 | } | |
2302 | ||
2303 | /* Gather characters. A real double quote is doubled. Unusual | |
2304 | characters are not permitted. */ | |
2305 | ++input_line_pointer; | |
2306 | while (1) | |
2307 | { | |
2308 | char c; | |
2309 | ||
2310 | c = *input_line_pointer++; | |
2311 | ||
2312 | if (c == '\"') | |
2313 | { | |
2314 | if (*input_line_pointer != '\"') | |
2315 | break; | |
2316 | ++input_line_pointer; | |
2317 | } | |
2318 | ||
2319 | FRAG_APPEND_1_CHAR (c); | |
2320 | } | |
2321 | ||
2322 | demand_empty_rest_of_line (); | |
2323 | } | |
2324 | \f | |
2325 | #ifdef OBJ_XCOFF | |
2326 | ||
2327 | /* XCOFF specific pseudo-op handling. */ | |
2328 | ||
2329 | /* This is set if we are creating a .stabx symbol, since we don't want | |
2330 | to handle symbol suffixes for such symbols. */ | |
2331 | static boolean ppc_stab_symbol; | |
2332 | ||
2333 | /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common | |
2334 | symbols in the .bss segment as though they were local common | |
2335 | symbols, and uses a different smclas. */ | |
2336 | ||
2337 | static void | |
2338 | ppc_comm (lcomm) | |
2339 | int lcomm; | |
2340 | { | |
2341 | asection *current_seg = now_seg; | |
2342 | subsegT current_subseg = now_subseg; | |
2343 | char *name; | |
2344 | char endc; | |
2345 | char *end_name; | |
2346 | offsetT size; | |
2347 | offsetT align; | |
2348 | symbolS *lcomm_sym = NULL; | |
2349 | symbolS *sym; | |
2350 | char *pfrag; | |
2351 | ||
2352 | name = input_line_pointer; | |
2353 | endc = get_symbol_end (); | |
2354 | end_name = input_line_pointer; | |
2355 | *end_name = endc; | |
2356 | ||
2357 | if (*input_line_pointer != ',') | |
2358 | { | |
2359 | as_bad (_("missing size")); | |
2360 | ignore_rest_of_line (); | |
2361 | return; | |
2362 | } | |
2363 | ++input_line_pointer; | |
2364 | ||
2365 | size = get_absolute_expression (); | |
2366 | if (size < 0) | |
2367 | { | |
2368 | as_bad (_("negative size")); | |
2369 | ignore_rest_of_line (); | |
2370 | return; | |
2371 | } | |
2372 | ||
2373 | if (! lcomm) | |
2374 | { | |
2375 | /* The third argument to .comm is the alignment. */ | |
2376 | if (*input_line_pointer != ',') | |
2377 | align = 3; | |
2378 | else | |
2379 | { | |
2380 | ++input_line_pointer; | |
2381 | align = get_absolute_expression (); | |
2382 | if (align <= 0) | |
2383 | { | |
2384 | as_warn (_("ignoring bad alignment")); | |
2385 | align = 3; | |
2386 | } | |
2387 | } | |
2388 | } | |
2389 | else | |
2390 | { | |
2391 | char *lcomm_name; | |
2392 | char lcomm_endc; | |
2393 | ||
2394 | if (size <= 1) | |
2395 | align = 0; | |
2396 | else if (size <= 2) | |
2397 | align = 1; | |
2398 | else if (size <= 4) | |
2399 | align = 2; | |
2400 | else | |
2401 | align = 3; | |
2402 | ||
2403 | /* The third argument to .lcomm appears to be the real local | |
2404 | common symbol to create. References to the symbol named in | |
2405 | the first argument are turned into references to the third | |
2406 | argument. */ | |
2407 | if (*input_line_pointer != ',') | |
2408 | { | |
2409 | as_bad (_("missing real symbol name")); | |
2410 | ignore_rest_of_line (); | |
2411 | return; | |
2412 | } | |
2413 | ++input_line_pointer; | |
2414 | ||
2415 | lcomm_name = input_line_pointer; | |
2416 | lcomm_endc = get_symbol_end (); | |
2417 | ||
2418 | lcomm_sym = symbol_find_or_make (lcomm_name); | |
2419 | ||
2420 | *input_line_pointer = lcomm_endc; | |
2421 | } | |
2422 | ||
2423 | *end_name = '\0'; | |
2424 | sym = symbol_find_or_make (name); | |
2425 | *end_name = endc; | |
2426 | ||
2427 | if (S_IS_DEFINED (sym) | |
2428 | || S_GET_VALUE (sym) != 0) | |
2429 | { | |
2430 | as_bad (_("attempt to redefine symbol")); | |
2431 | ignore_rest_of_line (); | |
2432 | return; | |
2433 | } | |
2434 | ||
2435 | record_alignment (bss_section, align); | |
2436 | ||
2437 | if (! lcomm | |
2438 | || ! S_IS_DEFINED (lcomm_sym)) | |
2439 | { | |
2440 | symbolS *def_sym; | |
2441 | offsetT def_size; | |
2442 | ||
2443 | if (! lcomm) | |
2444 | { | |
2445 | def_sym = sym; | |
2446 | def_size = size; | |
2447 | S_SET_EXTERNAL (sym); | |
2448 | } | |
2449 | else | |
2450 | { | |
809ffe0d | 2451 | symbol_get_tc (lcomm_sym)->output = 1; |
252b5132 RH |
2452 | def_sym = lcomm_sym; |
2453 | def_size = 0; | |
2454 | } | |
2455 | ||
2456 | subseg_set (bss_section, 1); | |
2457 | frag_align (align, 0, 0); | |
2458 | ||
809ffe0d | 2459 | symbol_set_frag (def_sym, frag_now); |
252b5132 RH |
2460 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym, |
2461 | def_size, (char *) NULL); | |
2462 | *pfrag = 0; | |
2463 | S_SET_SEGMENT (def_sym, bss_section); | |
809ffe0d | 2464 | symbol_get_tc (def_sym)->align = align; |
252b5132 RH |
2465 | } |
2466 | else if (lcomm) | |
2467 | { | |
2468 | /* Align the size of lcomm_sym. */ | |
809ffe0d ILT |
2469 | symbol_get_frag (lcomm_sym)->fr_offset = |
2470 | ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1) | |
252b5132 | 2471 | &~ ((1 << align) - 1)); |
809ffe0d ILT |
2472 | if (align > symbol_get_tc (lcomm_sym)->align) |
2473 | symbol_get_tc (lcomm_sym)->align = align; | |
252b5132 RH |
2474 | } |
2475 | ||
2476 | if (lcomm) | |
2477 | { | |
2478 | /* Make sym an offset from lcomm_sym. */ | |
2479 | S_SET_SEGMENT (sym, bss_section); | |
809ffe0d ILT |
2480 | symbol_set_frag (sym, symbol_get_frag (lcomm_sym)); |
2481 | S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset); | |
2482 | symbol_get_frag (lcomm_sym)->fr_offset += size; | |
252b5132 RH |
2483 | } |
2484 | ||
2485 | subseg_set (current_seg, current_subseg); | |
2486 | ||
2487 | demand_empty_rest_of_line (); | |
2488 | } | |
2489 | ||
2490 | /* The .csect pseudo-op. This switches us into a different | |
2491 | subsegment. The first argument is a symbol whose value is the | |
2492 | start of the .csect. In COFF, csect symbols get special aux | |
2493 | entries defined by the x_csect field of union internal_auxent. The | |
2494 | optional second argument is the alignment (the default is 2). */ | |
2495 | ||
2496 | static void | |
2497 | ppc_csect (ignore) | |
5480ccf3 | 2498 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2499 | { |
2500 | char *name; | |
2501 | char endc; | |
2502 | symbolS *sym; | |
2503 | ||
2504 | name = input_line_pointer; | |
2505 | endc = get_symbol_end (); | |
2506 | ||
2507 | sym = symbol_find_or_make (name); | |
2508 | ||
2509 | *input_line_pointer = endc; | |
2510 | ||
2511 | if (S_GET_NAME (sym)[0] == '\0') | |
2512 | { | |
2513 | /* An unnamed csect is assumed to be [PR]. */ | |
809ffe0d | 2514 | symbol_get_tc (sym)->class = XMC_PR; |
252b5132 RH |
2515 | } |
2516 | ||
2517 | ppc_change_csect (sym); | |
2518 | ||
2519 | if (*input_line_pointer == ',') | |
2520 | { | |
2521 | ++input_line_pointer; | |
809ffe0d | 2522 | symbol_get_tc (sym)->align = get_absolute_expression (); |
252b5132 RH |
2523 | } |
2524 | ||
2525 | demand_empty_rest_of_line (); | |
2526 | } | |
2527 | ||
2528 | /* Change to a different csect. */ | |
2529 | ||
2530 | static void | |
2531 | ppc_change_csect (sym) | |
2532 | symbolS *sym; | |
2533 | { | |
2534 | if (S_IS_DEFINED (sym)) | |
809ffe0d | 2535 | subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg); |
252b5132 RH |
2536 | else |
2537 | { | |
2538 | symbolS **list_ptr; | |
2539 | int after_toc; | |
2540 | int hold_chunksize; | |
2541 | symbolS *list; | |
2542 | ||
2543 | /* This is a new csect. We need to look at the symbol class to | |
2544 | figure out whether it should go in the text section or the | |
2545 | data section. */ | |
2546 | after_toc = 0; | |
809ffe0d | 2547 | switch (symbol_get_tc (sym)->class) |
252b5132 RH |
2548 | { |
2549 | case XMC_PR: | |
2550 | case XMC_RO: | |
2551 | case XMC_DB: | |
2552 | case XMC_GL: | |
2553 | case XMC_XO: | |
2554 | case XMC_SV: | |
2555 | case XMC_TI: | |
2556 | case XMC_TB: | |
2557 | S_SET_SEGMENT (sym, text_section); | |
809ffe0d | 2558 | symbol_get_tc (sym)->subseg = ppc_text_subsegment; |
252b5132 RH |
2559 | ++ppc_text_subsegment; |
2560 | list_ptr = &ppc_text_csects; | |
2561 | break; | |
2562 | case XMC_RW: | |
2563 | case XMC_TC0: | |
2564 | case XMC_TC: | |
2565 | case XMC_DS: | |
2566 | case XMC_UA: | |
2567 | case XMC_BS: | |
2568 | case XMC_UC: | |
2569 | if (ppc_toc_csect != NULL | |
809ffe0d ILT |
2570 | && (symbol_get_tc (ppc_toc_csect)->subseg + 1 |
2571 | == ppc_data_subsegment)) | |
252b5132 RH |
2572 | after_toc = 1; |
2573 | S_SET_SEGMENT (sym, data_section); | |
809ffe0d | 2574 | symbol_get_tc (sym)->subseg = ppc_data_subsegment; |
252b5132 RH |
2575 | ++ppc_data_subsegment; |
2576 | list_ptr = &ppc_data_csects; | |
2577 | break; | |
2578 | default: | |
2579 | abort (); | |
2580 | } | |
2581 | ||
2582 | /* We set the obstack chunk size to a small value before | |
2583 | changing subsegments, so that we don't use a lot of memory | |
2584 | space for what may be a small section. */ | |
2585 | hold_chunksize = chunksize; | |
2586 | chunksize = 64; | |
2587 | ||
809ffe0d ILT |
2588 | subseg_new (segment_name (S_GET_SEGMENT (sym)), |
2589 | symbol_get_tc (sym)->subseg); | |
252b5132 RH |
2590 | |
2591 | chunksize = hold_chunksize; | |
2592 | ||
2593 | if (after_toc) | |
2594 | ppc_after_toc_frag = frag_now; | |
2595 | ||
809ffe0d | 2596 | symbol_set_frag (sym, frag_now); |
252b5132 RH |
2597 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); |
2598 | ||
7f6d05e8 | 2599 | symbol_get_tc (sym)->align = (ppc_xcoff64) ? 3 : 2; |
809ffe0d ILT |
2600 | symbol_get_tc (sym)->output = 1; |
2601 | symbol_get_tc (sym)->within = sym; | |
252b5132 RH |
2602 | |
2603 | for (list = *list_ptr; | |
809ffe0d ILT |
2604 | symbol_get_tc (list)->next != (symbolS *) NULL; |
2605 | list = symbol_get_tc (list)->next) | |
252b5132 | 2606 | ; |
809ffe0d | 2607 | symbol_get_tc (list)->next = sym; |
252b5132 RH |
2608 | |
2609 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
809ffe0d ILT |
2610 | symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP, |
2611 | &symbol_lastP); | |
252b5132 RH |
2612 | } |
2613 | ||
2614 | ppc_current_csect = sym; | |
2615 | } | |
2616 | ||
2617 | /* This function handles the .text and .data pseudo-ops. These | |
2618 | pseudo-ops aren't really used by XCOFF; we implement them for the | |
2619 | convenience of people who aren't used to XCOFF. */ | |
2620 | ||
2621 | static void | |
2622 | ppc_section (type) | |
2623 | int type; | |
2624 | { | |
2625 | const char *name; | |
2626 | symbolS *sym; | |
2627 | ||
2628 | if (type == 't') | |
2629 | name = ".text[PR]"; | |
2630 | else if (type == 'd') | |
2631 | name = ".data[RW]"; | |
2632 | else | |
2633 | abort (); | |
2634 | ||
2635 | sym = symbol_find_or_make (name); | |
2636 | ||
2637 | ppc_change_csect (sym); | |
2638 | ||
2639 | demand_empty_rest_of_line (); | |
2640 | } | |
2641 | ||
2642 | /* This function handles the .section pseudo-op. This is mostly to | |
2643 | give an error, since XCOFF only supports .text, .data and .bss, but | |
2644 | we do permit the user to name the text or data section. */ | |
2645 | ||
2646 | static void | |
2647 | ppc_named_section (ignore) | |
5480ccf3 | 2648 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2649 | { |
2650 | char *user_name; | |
2651 | const char *real_name; | |
2652 | char c; | |
2653 | symbolS *sym; | |
2654 | ||
2655 | user_name = input_line_pointer; | |
2656 | c = get_symbol_end (); | |
2657 | ||
2658 | if (strcmp (user_name, ".text") == 0) | |
2659 | real_name = ".text[PR]"; | |
2660 | else if (strcmp (user_name, ".data") == 0) | |
2661 | real_name = ".data[RW]"; | |
2662 | else | |
2663 | { | |
2664 | as_bad (_("The XCOFF file format does not support arbitrary sections")); | |
2665 | *input_line_pointer = c; | |
2666 | ignore_rest_of_line (); | |
2667 | return; | |
2668 | } | |
2669 | ||
2670 | *input_line_pointer = c; | |
2671 | ||
2672 | sym = symbol_find_or_make (real_name); | |
2673 | ||
2674 | ppc_change_csect (sym); | |
2675 | ||
2676 | demand_empty_rest_of_line (); | |
2677 | } | |
2678 | ||
2679 | /* The .extern pseudo-op. We create an undefined symbol. */ | |
2680 | ||
2681 | static void | |
2682 | ppc_extern (ignore) | |
5480ccf3 | 2683 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2684 | { |
2685 | char *name; | |
2686 | char endc; | |
2687 | ||
2688 | name = input_line_pointer; | |
2689 | endc = get_symbol_end (); | |
2690 | ||
2691 | (void) symbol_find_or_make (name); | |
2692 | ||
2693 | *input_line_pointer = endc; | |
2694 | ||
2695 | demand_empty_rest_of_line (); | |
2696 | } | |
2697 | ||
2698 | /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */ | |
2699 | ||
2700 | static void | |
2701 | ppc_lglobl (ignore) | |
5480ccf3 | 2702 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2703 | { |
2704 | char *name; | |
2705 | char endc; | |
2706 | symbolS *sym; | |
2707 | ||
2708 | name = input_line_pointer; | |
2709 | endc = get_symbol_end (); | |
2710 | ||
2711 | sym = symbol_find_or_make (name); | |
2712 | ||
2713 | *input_line_pointer = endc; | |
2714 | ||
809ffe0d | 2715 | symbol_get_tc (sym)->output = 1; |
252b5132 RH |
2716 | |
2717 | demand_empty_rest_of_line (); | |
2718 | } | |
2719 | ||
2720 | /* The .rename pseudo-op. The RS/6000 assembler can rename symbols, | |
2721 | although I don't know why it bothers. */ | |
2722 | ||
2723 | static void | |
2724 | ppc_rename (ignore) | |
5480ccf3 | 2725 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2726 | { |
2727 | char *name; | |
2728 | char endc; | |
2729 | symbolS *sym; | |
2730 | int len; | |
2731 | ||
2732 | name = input_line_pointer; | |
2733 | endc = get_symbol_end (); | |
2734 | ||
2735 | sym = symbol_find_or_make (name); | |
2736 | ||
2737 | *input_line_pointer = endc; | |
2738 | ||
2739 | if (*input_line_pointer != ',') | |
2740 | { | |
2741 | as_bad (_("missing rename string")); | |
2742 | ignore_rest_of_line (); | |
2743 | return; | |
2744 | } | |
2745 | ++input_line_pointer; | |
2746 | ||
809ffe0d | 2747 | symbol_get_tc (sym)->real_name = demand_copy_C_string (&len); |
252b5132 RH |
2748 | |
2749 | demand_empty_rest_of_line (); | |
2750 | } | |
2751 | ||
2752 | /* The .stabx pseudo-op. This is similar to a normal .stabs | |
2753 | pseudo-op, but slightly different. A sample is | |
2754 | .stabx "main:F-1",.main,142,0 | |
2755 | The first argument is the symbol name to create. The second is the | |
2756 | value, and the third is the storage class. The fourth seems to be | |
2757 | always zero, and I am assuming it is the type. */ | |
2758 | ||
2759 | static void | |
2760 | ppc_stabx (ignore) | |
5480ccf3 | 2761 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2762 | { |
2763 | char *name; | |
2764 | int len; | |
2765 | symbolS *sym; | |
2766 | expressionS exp; | |
2767 | ||
2768 | name = demand_copy_C_string (&len); | |
2769 | ||
2770 | if (*input_line_pointer != ',') | |
2771 | { | |
2772 | as_bad (_("missing value")); | |
2773 | return; | |
2774 | } | |
2775 | ++input_line_pointer; | |
2776 | ||
2777 | ppc_stab_symbol = true; | |
2778 | sym = symbol_make (name); | |
2779 | ppc_stab_symbol = false; | |
2780 | ||
809ffe0d | 2781 | symbol_get_tc (sym)->real_name = name; |
252b5132 RH |
2782 | |
2783 | (void) expression (&exp); | |
2784 | ||
2785 | switch (exp.X_op) | |
2786 | { | |
2787 | case O_illegal: | |
2788 | case O_absent: | |
2789 | case O_big: | |
2790 | as_bad (_("illegal .stabx expression; zero assumed")); | |
2791 | exp.X_add_number = 0; | |
2792 | /* Fall through. */ | |
2793 | case O_constant: | |
2794 | S_SET_VALUE (sym, (valueT) exp.X_add_number); | |
809ffe0d | 2795 | symbol_set_frag (sym, &zero_address_frag); |
252b5132 RH |
2796 | break; |
2797 | ||
2798 | case O_symbol: | |
2799 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section) | |
809ffe0d | 2800 | symbol_set_value_expression (sym, &exp); |
252b5132 RH |
2801 | else |
2802 | { | |
2803 | S_SET_VALUE (sym, | |
2804 | exp.X_add_number + S_GET_VALUE (exp.X_add_symbol)); | |
809ffe0d | 2805 | symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol)); |
252b5132 RH |
2806 | } |
2807 | break; | |
2808 | ||
2809 | default: | |
2810 | /* The value is some complex expression. This will probably | |
2811 | fail at some later point, but this is probably the right | |
2812 | thing to do here. */ | |
809ffe0d | 2813 | symbol_set_value_expression (sym, &exp); |
252b5132 RH |
2814 | break; |
2815 | } | |
2816 | ||
2817 | S_SET_SEGMENT (sym, ppc_coff_debug_section); | |
809ffe0d | 2818 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
252b5132 RH |
2819 | |
2820 | if (*input_line_pointer != ',') | |
2821 | { | |
2822 | as_bad (_("missing class")); | |
2823 | return; | |
2824 | } | |
2825 | ++input_line_pointer; | |
2826 | ||
2827 | S_SET_STORAGE_CLASS (sym, get_absolute_expression ()); | |
2828 | ||
2829 | if (*input_line_pointer != ',') | |
2830 | { | |
2831 | as_bad (_("missing type")); | |
2832 | return; | |
2833 | } | |
2834 | ++input_line_pointer; | |
2835 | ||
2836 | S_SET_DATA_TYPE (sym, get_absolute_expression ()); | |
2837 | ||
809ffe0d | 2838 | symbol_get_tc (sym)->output = 1; |
252b5132 RH |
2839 | |
2840 | if (S_GET_STORAGE_CLASS (sym) == C_STSYM) | |
809ffe0d | 2841 | symbol_get_tc (sym)->within = ppc_current_block; |
252b5132 RH |
2842 | |
2843 | if (exp.X_op != O_symbol | |
2844 | || ! S_IS_EXTERNAL (exp.X_add_symbol) | |
2845 | || S_GET_SEGMENT (exp.X_add_symbol) != bss_section) | |
2846 | ppc_frob_label (sym); | |
2847 | else | |
2848 | { | |
2849 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
2850 | symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP); | |
809ffe0d ILT |
2851 | if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol) |
2852 | symbol_get_tc (ppc_current_csect)->within = sym; | |
252b5132 RH |
2853 | } |
2854 | ||
2855 | demand_empty_rest_of_line (); | |
2856 | } | |
2857 | ||
2858 | /* The .function pseudo-op. This takes several arguments. The first | |
2859 | argument seems to be the external name of the symbol. The second | |
2860 | argment seems to be the label for the start of the function. gcc | |
2861 | uses the same name for both. I have no idea what the third and | |
2862 | fourth arguments are meant to be. The optional fifth argument is | |
2863 | an expression for the size of the function. In COFF this symbol | |
2864 | gets an aux entry like that used for a csect. */ | |
2865 | ||
2866 | static void | |
2867 | ppc_function (ignore) | |
5480ccf3 | 2868 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2869 | { |
2870 | char *name; | |
2871 | char endc; | |
2872 | char *s; | |
2873 | symbolS *ext_sym; | |
2874 | symbolS *lab_sym; | |
2875 | ||
2876 | name = input_line_pointer; | |
2877 | endc = get_symbol_end (); | |
2878 | ||
2879 | /* Ignore any [PR] suffix. */ | |
2880 | name = ppc_canonicalize_symbol_name (name); | |
2881 | s = strchr (name, '['); | |
2882 | if (s != (char *) NULL | |
2883 | && strcmp (s + 1, "PR]") == 0) | |
2884 | *s = '\0'; | |
2885 | ||
2886 | ext_sym = symbol_find_or_make (name); | |
2887 | ||
2888 | *input_line_pointer = endc; | |
2889 | ||
2890 | if (*input_line_pointer != ',') | |
2891 | { | |
2892 | as_bad (_("missing symbol name")); | |
2893 | ignore_rest_of_line (); | |
2894 | return; | |
2895 | } | |
2896 | ++input_line_pointer; | |
2897 | ||
2898 | name = input_line_pointer; | |
2899 | endc = get_symbol_end (); | |
2900 | ||
2901 | lab_sym = symbol_find_or_make (name); | |
2902 | ||
2903 | *input_line_pointer = endc; | |
2904 | ||
2905 | if (ext_sym != lab_sym) | |
2906 | { | |
809ffe0d ILT |
2907 | expressionS exp; |
2908 | ||
2909 | exp.X_op = O_symbol; | |
2910 | exp.X_add_symbol = lab_sym; | |
2911 | exp.X_op_symbol = NULL; | |
2912 | exp.X_add_number = 0; | |
2913 | exp.X_unsigned = 0; | |
2914 | symbol_set_value_expression (ext_sym, &exp); | |
252b5132 RH |
2915 | } |
2916 | ||
809ffe0d ILT |
2917 | if (symbol_get_tc (ext_sym)->class == -1) |
2918 | symbol_get_tc (ext_sym)->class = XMC_PR; | |
2919 | symbol_get_tc (ext_sym)->output = 1; | |
252b5132 RH |
2920 | |
2921 | if (*input_line_pointer == ',') | |
2922 | { | |
2923 | expressionS ignore; | |
2924 | ||
2925 | /* Ignore the third argument. */ | |
2926 | ++input_line_pointer; | |
2927 | expression (&ignore); | |
2928 | if (*input_line_pointer == ',') | |
2929 | { | |
2930 | /* Ignore the fourth argument. */ | |
2931 | ++input_line_pointer; | |
2932 | expression (&ignore); | |
2933 | if (*input_line_pointer == ',') | |
2934 | { | |
2935 | /* The fifth argument is the function size. */ | |
2936 | ++input_line_pointer; | |
809ffe0d ILT |
2937 | symbol_get_tc (ext_sym)->size = symbol_new ("L0\001", |
2938 | absolute_section, | |
2939 | (valueT) 0, | |
2940 | &zero_address_frag); | |
2941 | pseudo_set (symbol_get_tc (ext_sym)->size); | |
252b5132 RH |
2942 | } |
2943 | } | |
2944 | } | |
2945 | ||
2946 | S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT); | |
2947 | SF_SET_FUNCTION (ext_sym); | |
2948 | SF_SET_PROCESS (ext_sym); | |
2949 | coff_add_linesym (ext_sym); | |
2950 | ||
2951 | demand_empty_rest_of_line (); | |
2952 | } | |
2953 | ||
2954 | /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named | |
2955 | ".bf". */ | |
2956 | ||
2957 | static void | |
2958 | ppc_bf (ignore) | |
5480ccf3 | 2959 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2960 | { |
2961 | symbolS *sym; | |
2962 | ||
2963 | sym = symbol_make (".bf"); | |
2964 | S_SET_SEGMENT (sym, text_section); | |
809ffe0d | 2965 | symbol_set_frag (sym, frag_now); |
252b5132 RH |
2966 | S_SET_VALUE (sym, frag_now_fix ()); |
2967 | S_SET_STORAGE_CLASS (sym, C_FCN); | |
2968 | ||
2969 | coff_line_base = get_absolute_expression (); | |
2970 | ||
2971 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
2972 | SA_SET_SYM_LNNO (sym, coff_line_base); | |
2973 | ||
809ffe0d | 2974 | symbol_get_tc (sym)->output = 1; |
252b5132 RH |
2975 | |
2976 | ppc_frob_label (sym); | |
2977 | ||
2978 | demand_empty_rest_of_line (); | |
2979 | } | |
2980 | ||
2981 | /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named | |
2982 | ".ef", except that the line number is absolute, not relative to the | |
2983 | most recent ".bf" symbol. */ | |
2984 | ||
2985 | static void | |
2986 | ppc_ef (ignore) | |
5480ccf3 | 2987 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2988 | { |
2989 | symbolS *sym; | |
2990 | ||
2991 | sym = symbol_make (".ef"); | |
2992 | S_SET_SEGMENT (sym, text_section); | |
809ffe0d | 2993 | symbol_set_frag (sym, frag_now); |
252b5132 RH |
2994 | S_SET_VALUE (sym, frag_now_fix ()); |
2995 | S_SET_STORAGE_CLASS (sym, C_FCN); | |
2996 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
2997 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); | |
809ffe0d | 2998 | symbol_get_tc (sym)->output = 1; |
252b5132 RH |
2999 | |
3000 | ppc_frob_label (sym); | |
3001 | ||
3002 | demand_empty_rest_of_line (); | |
3003 | } | |
3004 | ||
3005 | /* The .bi and .ei pseudo-ops. These take a string argument and | |
3006 | generates a C_BINCL or C_EINCL symbol, which goes at the start of | |
3007 | the symbol list. */ | |
3008 | ||
3009 | static void | |
3010 | ppc_biei (ei) | |
3011 | int ei; | |
3012 | { | |
3013 | static symbolS *last_biei; | |
3014 | ||
3015 | char *name; | |
3016 | int len; | |
3017 | symbolS *sym; | |
3018 | symbolS *look; | |
3019 | ||
3020 | name = demand_copy_C_string (&len); | |
3021 | ||
3022 | /* The value of these symbols is actually file offset. Here we set | |
3023 | the value to the index into the line number entries. In | |
3024 | ppc_frob_symbols we set the fix_line field, which will cause BFD | |
3025 | to do the right thing. */ | |
3026 | ||
3027 | sym = symbol_make (name); | |
3028 | /* obj-coff.c currently only handles line numbers correctly in the | |
3029 | .text section. */ | |
3030 | S_SET_SEGMENT (sym, text_section); | |
3031 | S_SET_VALUE (sym, coff_n_line_nos); | |
809ffe0d | 3032 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
252b5132 RH |
3033 | |
3034 | S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL); | |
809ffe0d | 3035 | symbol_get_tc (sym)->output = 1; |
252b5132 RH |
3036 | |
3037 | for (look = last_biei ? last_biei : symbol_rootP; | |
3038 | (look != (symbolS *) NULL | |
3039 | && (S_GET_STORAGE_CLASS (look) == C_FILE | |
3040 | || S_GET_STORAGE_CLASS (look) == C_BINCL | |
3041 | || S_GET_STORAGE_CLASS (look) == C_EINCL)); | |
3042 | look = symbol_next (look)) | |
3043 | ; | |
3044 | if (look != (symbolS *) NULL) | |
3045 | { | |
3046 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
3047 | symbol_insert (sym, look, &symbol_rootP, &symbol_lastP); | |
3048 | last_biei = sym; | |
3049 | } | |
3050 | ||
3051 | demand_empty_rest_of_line (); | |
3052 | } | |
3053 | ||
3054 | /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs". | |
3055 | There is one argument, which is a csect symbol. The value of the | |
3056 | .bs symbol is the index of this csect symbol. */ | |
3057 | ||
3058 | static void | |
3059 | ppc_bs (ignore) | |
5480ccf3 | 3060 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3061 | { |
3062 | char *name; | |
3063 | char endc; | |
3064 | symbolS *csect; | |
3065 | symbolS *sym; | |
3066 | ||
3067 | if (ppc_current_block != NULL) | |
3068 | as_bad (_("nested .bs blocks")); | |
3069 | ||
3070 | name = input_line_pointer; | |
3071 | endc = get_symbol_end (); | |
3072 | ||
3073 | csect = symbol_find_or_make (name); | |
3074 | ||
3075 | *input_line_pointer = endc; | |
3076 | ||
3077 | sym = symbol_make (".bs"); | |
3078 | S_SET_SEGMENT (sym, now_seg); | |
3079 | S_SET_STORAGE_CLASS (sym, C_BSTAT); | |
809ffe0d ILT |
3080 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
3081 | symbol_get_tc (sym)->output = 1; | |
252b5132 | 3082 | |
809ffe0d | 3083 | symbol_get_tc (sym)->within = csect; |
252b5132 RH |
3084 | |
3085 | ppc_frob_label (sym); | |
3086 | ||
3087 | ppc_current_block = sym; | |
3088 | ||
3089 | demand_empty_rest_of_line (); | |
3090 | } | |
3091 | ||
3092 | /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */ | |
3093 | ||
3094 | static void | |
3095 | ppc_es (ignore) | |
5480ccf3 | 3096 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3097 | { |
3098 | symbolS *sym; | |
3099 | ||
3100 | if (ppc_current_block == NULL) | |
3101 | as_bad (_(".es without preceding .bs")); | |
3102 | ||
3103 | sym = symbol_make (".es"); | |
3104 | S_SET_SEGMENT (sym, now_seg); | |
3105 | S_SET_STORAGE_CLASS (sym, C_ESTAT); | |
809ffe0d ILT |
3106 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
3107 | symbol_get_tc (sym)->output = 1; | |
252b5132 RH |
3108 | |
3109 | ppc_frob_label (sym); | |
3110 | ||
3111 | ppc_current_block = NULL; | |
3112 | ||
3113 | demand_empty_rest_of_line (); | |
3114 | } | |
3115 | ||
3116 | /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a | |
3117 | line number. */ | |
3118 | ||
3119 | static void | |
3120 | ppc_bb (ignore) | |
5480ccf3 | 3121 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3122 | { |
3123 | symbolS *sym; | |
3124 | ||
3125 | sym = symbol_make (".bb"); | |
3126 | S_SET_SEGMENT (sym, text_section); | |
809ffe0d | 3127 | symbol_set_frag (sym, frag_now); |
252b5132 RH |
3128 | S_SET_VALUE (sym, frag_now_fix ()); |
3129 | S_SET_STORAGE_CLASS (sym, C_BLOCK); | |
3130 | ||
3131 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
3132 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); | |
3133 | ||
809ffe0d | 3134 | symbol_get_tc (sym)->output = 1; |
252b5132 RH |
3135 | |
3136 | SF_SET_PROCESS (sym); | |
3137 | ||
3138 | ppc_frob_label (sym); | |
3139 | ||
3140 | demand_empty_rest_of_line (); | |
3141 | } | |
3142 | ||
3143 | /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a | |
3144 | line number. */ | |
3145 | ||
3146 | static void | |
3147 | ppc_eb (ignore) | |
5480ccf3 | 3148 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3149 | { |
3150 | symbolS *sym; | |
3151 | ||
3152 | sym = symbol_make (".eb"); | |
3153 | S_SET_SEGMENT (sym, text_section); | |
809ffe0d | 3154 | symbol_set_frag (sym, frag_now); |
252b5132 RH |
3155 | S_SET_VALUE (sym, frag_now_fix ()); |
3156 | S_SET_STORAGE_CLASS (sym, C_BLOCK); | |
3157 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
3158 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); | |
809ffe0d | 3159 | symbol_get_tc (sym)->output = 1; |
252b5132 RH |
3160 | |
3161 | SF_SET_PROCESS (sym); | |
3162 | ||
3163 | ppc_frob_label (sym); | |
3164 | ||
3165 | demand_empty_rest_of_line (); | |
3166 | } | |
3167 | ||
3168 | /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a | |
3169 | specified name. */ | |
3170 | ||
3171 | static void | |
3172 | ppc_bc (ignore) | |
5480ccf3 | 3173 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3174 | { |
3175 | char *name; | |
3176 | int len; | |
3177 | symbolS *sym; | |
3178 | ||
3179 | name = demand_copy_C_string (&len); | |
3180 | sym = symbol_make (name); | |
3181 | S_SET_SEGMENT (sym, ppc_coff_debug_section); | |
809ffe0d | 3182 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
252b5132 RH |
3183 | S_SET_STORAGE_CLASS (sym, C_BCOMM); |
3184 | S_SET_VALUE (sym, 0); | |
809ffe0d | 3185 | symbol_get_tc (sym)->output = 1; |
252b5132 RH |
3186 | |
3187 | ppc_frob_label (sym); | |
3188 | ||
3189 | demand_empty_rest_of_line (); | |
3190 | } | |
3191 | ||
3192 | /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */ | |
3193 | ||
3194 | static void | |
3195 | ppc_ec (ignore) | |
5480ccf3 | 3196 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3197 | { |
3198 | symbolS *sym; | |
3199 | ||
3200 | sym = symbol_make (".ec"); | |
3201 | S_SET_SEGMENT (sym, ppc_coff_debug_section); | |
809ffe0d | 3202 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; |
252b5132 RH |
3203 | S_SET_STORAGE_CLASS (sym, C_ECOMM); |
3204 | S_SET_VALUE (sym, 0); | |
809ffe0d | 3205 | symbol_get_tc (sym)->output = 1; |
252b5132 RH |
3206 | |
3207 | ppc_frob_label (sym); | |
3208 | ||
3209 | demand_empty_rest_of_line (); | |
3210 | } | |
3211 | ||
3212 | /* The .toc pseudo-op. Switch to the .toc subsegment. */ | |
3213 | ||
3214 | static void | |
3215 | ppc_toc (ignore) | |
5480ccf3 | 3216 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3217 | { |
3218 | if (ppc_toc_csect != (symbolS *) NULL) | |
809ffe0d | 3219 | subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg); |
252b5132 RH |
3220 | else |
3221 | { | |
3222 | subsegT subseg; | |
3223 | symbolS *sym; | |
3224 | symbolS *list; | |
3225 | ||
3226 | subseg = ppc_data_subsegment; | |
3227 | ++ppc_data_subsegment; | |
3228 | ||
3229 | subseg_new (segment_name (data_section), subseg); | |
3230 | ppc_toc_frag = frag_now; | |
3231 | ||
3232 | sym = symbol_find_or_make ("TOC[TC0]"); | |
809ffe0d | 3233 | symbol_set_frag (sym, frag_now); |
252b5132 RH |
3234 | S_SET_SEGMENT (sym, data_section); |
3235 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); | |
809ffe0d ILT |
3236 | symbol_get_tc (sym)->subseg = subseg; |
3237 | symbol_get_tc (sym)->output = 1; | |
3238 | symbol_get_tc (sym)->within = sym; | |
252b5132 RH |
3239 | |
3240 | ppc_toc_csect = sym; | |
3241 | ||
3242 | for (list = ppc_data_csects; | |
809ffe0d ILT |
3243 | symbol_get_tc (list)->next != (symbolS *) NULL; |
3244 | list = symbol_get_tc (list)->next) | |
252b5132 | 3245 | ; |
809ffe0d | 3246 | symbol_get_tc (list)->next = sym; |
252b5132 RH |
3247 | |
3248 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
809ffe0d ILT |
3249 | symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP, |
3250 | &symbol_lastP); | |
252b5132 RH |
3251 | } |
3252 | ||
3253 | ppc_current_csect = ppc_toc_csect; | |
3254 | ||
3255 | demand_empty_rest_of_line (); | |
3256 | } | |
3257 | ||
3258 | /* The AIX assembler automatically aligns the operands of a .long or | |
3259 | .short pseudo-op, and we want to be compatible. */ | |
3260 | ||
3261 | static void | |
3262 | ppc_xcoff_cons (log_size) | |
3263 | int log_size; | |
3264 | { | |
3265 | frag_align (log_size, 0, 0); | |
3266 | record_alignment (now_seg, log_size); | |
3267 | cons (1 << log_size); | |
3268 | } | |
3269 | ||
7f6d05e8 CP |
3270 | static void |
3271 | ppc_machine(dummy) | |
5480ccf3 | 3272 | int dummy ATTRIBUTE_UNUSED; |
7f6d05e8 CP |
3273 | { |
3274 | discard_rest_of_line(); | |
3275 | /* What does aix use this for? */ | |
3276 | } | |
3277 | ||
252b5132 RH |
3278 | static void |
3279 | ppc_vbyte (dummy) | |
5480ccf3 | 3280 | int dummy ATTRIBUTE_UNUSED; |
252b5132 RH |
3281 | { |
3282 | expressionS exp; | |
3283 | int byte_count; | |
3284 | ||
3285 | (void) expression (&exp); | |
3286 | ||
3287 | if (exp.X_op != O_constant) | |
3288 | { | |
3289 | as_bad (_("non-constant byte count")); | |
3290 | return; | |
3291 | } | |
3292 | ||
3293 | byte_count = exp.X_add_number; | |
3294 | ||
3295 | if (*input_line_pointer != ',') | |
3296 | { | |
3297 | as_bad (_("missing value")); | |
3298 | return; | |
3299 | } | |
3300 | ||
3301 | ++input_line_pointer; | |
3302 | cons (byte_count); | |
3303 | } | |
3304 | ||
3305 | #endif /* OBJ_XCOFF */ | |
3306 | \f | |
3307 | /* The .tc pseudo-op. This is used when generating either XCOFF or | |
3308 | ELF. This takes two or more arguments. | |
3309 | ||
3310 | When generating XCOFF output, the first argument is the name to | |
3311 | give to this location in the toc; this will be a symbol with class | |
3312 | TC. The rest of the arguments are 4 byte values to actually put at | |
3313 | this location in the TOC; often there is just one more argument, a | |
3314 | relocateable symbol reference. | |
3315 | ||
3316 | When not generating XCOFF output, the arguments are the same, but | |
3317 | the first argument is simply ignored. */ | |
3318 | ||
3319 | static void | |
3320 | ppc_tc (ignore) | |
92161534 | 3321 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3322 | { |
3323 | #ifdef OBJ_XCOFF | |
3324 | ||
3325 | /* Define the TOC symbol name. */ | |
3326 | { | |
3327 | char *name; | |
3328 | char endc; | |
3329 | symbolS *sym; | |
3330 | ||
3331 | if (ppc_toc_csect == (symbolS *) NULL | |
3332 | || ppc_toc_csect != ppc_current_csect) | |
3333 | { | |
3334 | as_bad (_(".tc not in .toc section")); | |
3335 | ignore_rest_of_line (); | |
3336 | return; | |
3337 | } | |
3338 | ||
3339 | name = input_line_pointer; | |
3340 | endc = get_symbol_end (); | |
3341 | ||
3342 | sym = symbol_find_or_make (name); | |
3343 | ||
3344 | *input_line_pointer = endc; | |
3345 | ||
3346 | if (S_IS_DEFINED (sym)) | |
3347 | { | |
3348 | symbolS *label; | |
3349 | ||
809ffe0d ILT |
3350 | label = symbol_get_tc (ppc_current_csect)->within; |
3351 | if (symbol_get_tc (label)->class != XMC_TC0) | |
252b5132 RH |
3352 | { |
3353 | as_bad (_(".tc with no label")); | |
3354 | ignore_rest_of_line (); | |
3355 | return; | |
3356 | } | |
3357 | ||
3358 | S_SET_SEGMENT (label, S_GET_SEGMENT (sym)); | |
809ffe0d | 3359 | symbol_set_frag (label, symbol_get_frag (sym)); |
252b5132 RH |
3360 | S_SET_VALUE (label, S_GET_VALUE (sym)); |
3361 | ||
3362 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
3363 | ++input_line_pointer; | |
3364 | ||
3365 | return; | |
3366 | } | |
3367 | ||
3368 | S_SET_SEGMENT (sym, now_seg); | |
809ffe0d | 3369 | symbol_set_frag (sym, frag_now); |
252b5132 | 3370 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); |
809ffe0d ILT |
3371 | symbol_get_tc (sym)->class = XMC_TC; |
3372 | symbol_get_tc (sym)->output = 1; | |
252b5132 RH |
3373 | |
3374 | ppc_frob_label (sym); | |
3375 | } | |
3376 | ||
3377 | #else /* ! defined (OBJ_XCOFF) */ | |
3378 | ||
3379 | /* Skip the TOC symbol name. */ | |
3380 | while (is_part_of_name (*input_line_pointer) | |
3381 | || *input_line_pointer == '[' | |
3382 | || *input_line_pointer == ']' | |
3383 | || *input_line_pointer == '{' | |
3384 | || *input_line_pointer == '}') | |
3385 | ++input_line_pointer; | |
3386 | ||
3387 | /* Align to a four byte boundary. */ | |
3388 | frag_align (2, 0, 0); | |
3389 | record_alignment (now_seg, 2); | |
3390 | ||
3391 | #endif /* ! defined (OBJ_XCOFF) */ | |
3392 | ||
3393 | if (*input_line_pointer != ',') | |
3394 | demand_empty_rest_of_line (); | |
3395 | else | |
3396 | { | |
3397 | ++input_line_pointer; | |
7f6d05e8 | 3398 | cons ((ppc_size == PPC_OPCODE_64) ? 8 : 4); |
252b5132 RH |
3399 | } |
3400 | } | |
3401 | \f | |
3402 | #ifdef TE_PE | |
3403 | ||
3404 | /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format */ | |
3405 | ||
3406 | /* Set the current section. */ | |
3407 | static void | |
3408 | ppc_set_current_section (new) | |
3409 | segT new; | |
3410 | { | |
3411 | ppc_previous_section = ppc_current_section; | |
3412 | ppc_current_section = new; | |
3413 | } | |
3414 | ||
3415 | /* pseudo-op: .previous | |
3416 | behaviour: toggles the current section with the previous section. | |
3417 | errors: None | |
3418 | warnings: "No previous section" | |
3419 | */ | |
3420 | static void | |
3421 | ppc_previous(ignore) | |
5480ccf3 | 3422 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3423 | { |
3424 | symbolS *tmp; | |
3425 | ||
3426 | if (ppc_previous_section == NULL) | |
3427 | { | |
3428 | as_warn(_("No previous section to return to. Directive ignored.")); | |
3429 | return; | |
3430 | } | |
3431 | ||
3432 | subseg_set(ppc_previous_section, 0); | |
3433 | ||
3434 | ppc_set_current_section(ppc_previous_section); | |
3435 | } | |
3436 | ||
3437 | /* pseudo-op: .pdata | |
3438 | behaviour: predefined read only data section | |
3439 | double word aligned | |
3440 | errors: None | |
3441 | warnings: None | |
3442 | initial: .section .pdata "adr3" | |
3443 | a - don't know -- maybe a misprint | |
3444 | d - initialized data | |
3445 | r - readable | |
3446 | 3 - double word aligned (that would be 4 byte boundary) | |
3447 | ||
3448 | commentary: | |
3449 | Tag index tables (also known as the function table) for exception | |
3450 | handling, debugging, etc. | |
3451 | ||
3452 | */ | |
3453 | static void | |
3454 | ppc_pdata(ignore) | |
5480ccf3 | 3455 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3456 | { |
3457 | if (pdata_section == 0) | |
3458 | { | |
3459 | pdata_section = subseg_new (".pdata", 0); | |
3460 | ||
3461 | bfd_set_section_flags (stdoutput, pdata_section, | |
3462 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
3463 | | SEC_READONLY | SEC_DATA )); | |
3464 | ||
3465 | bfd_set_section_alignment (stdoutput, pdata_section, 2); | |
3466 | } | |
3467 | else | |
3468 | { | |
3469 | pdata_section = subseg_new(".pdata", 0); | |
3470 | } | |
3471 | ppc_set_current_section(pdata_section); | |
3472 | } | |
3473 | ||
3474 | /* pseudo-op: .ydata | |
3475 | behaviour: predefined read only data section | |
3476 | double word aligned | |
3477 | errors: None | |
3478 | warnings: None | |
3479 | initial: .section .ydata "drw3" | |
3480 | a - don't know -- maybe a misprint | |
3481 | d - initialized data | |
3482 | r - readable | |
3483 | 3 - double word aligned (that would be 4 byte boundary) | |
3484 | commentary: | |
3485 | Tag tables (also known as the scope table) for exception handling, | |
3486 | debugging, etc. | |
3487 | */ | |
3488 | static void | |
3489 | ppc_ydata(ignore) | |
5480ccf3 | 3490 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3491 | { |
3492 | if (ydata_section == 0) | |
3493 | { | |
3494 | ydata_section = subseg_new (".ydata", 0); | |
3495 | bfd_set_section_flags (stdoutput, ydata_section, | |
3496 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
3497 | | SEC_READONLY | SEC_DATA )); | |
3498 | ||
3499 | bfd_set_section_alignment (stdoutput, ydata_section, 3); | |
3500 | } | |
3501 | else | |
3502 | { | |
3503 | ydata_section = subseg_new (".ydata", 0); | |
3504 | } | |
3505 | ppc_set_current_section(ydata_section); | |
3506 | } | |
3507 | ||
3508 | /* pseudo-op: .reldata | |
3509 | behaviour: predefined read write data section | |
3510 | double word aligned (4-byte) | |
3511 | FIXME: relocation is applied to it | |
3512 | FIXME: what's the difference between this and .data? | |
3513 | errors: None | |
3514 | warnings: None | |
3515 | initial: .section .reldata "drw3" | |
3516 | d - initialized data | |
3517 | r - readable | |
3518 | w - writeable | |
3519 | 3 - double word aligned (that would be 8 byte boundary) | |
3520 | ||
3521 | commentary: | |
3522 | Like .data, but intended to hold data subject to relocation, such as | |
3523 | function descriptors, etc. | |
3524 | */ | |
3525 | static void | |
3526 | ppc_reldata(ignore) | |
5480ccf3 | 3527 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3528 | { |
3529 | if (reldata_section == 0) | |
3530 | { | |
3531 | reldata_section = subseg_new (".reldata", 0); | |
3532 | ||
3533 | bfd_set_section_flags (stdoutput, reldata_section, | |
3534 | ( SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
3535 | | SEC_DATA )); | |
3536 | ||
3537 | bfd_set_section_alignment (stdoutput, reldata_section, 2); | |
3538 | } | |
3539 | else | |
3540 | { | |
3541 | reldata_section = subseg_new (".reldata", 0); | |
3542 | } | |
3543 | ppc_set_current_section(reldata_section); | |
3544 | } | |
3545 | ||
3546 | /* pseudo-op: .rdata | |
3547 | behaviour: predefined read only data section | |
3548 | double word aligned | |
3549 | errors: None | |
3550 | warnings: None | |
3551 | initial: .section .rdata "dr3" | |
3552 | d - initialized data | |
3553 | r - readable | |
3554 | 3 - double word aligned (that would be 4 byte boundary) | |
3555 | */ | |
3556 | static void | |
3557 | ppc_rdata(ignore) | |
5480ccf3 | 3558 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3559 | { |
3560 | if (rdata_section == 0) | |
3561 | { | |
3562 | rdata_section = subseg_new (".rdata", 0); | |
3563 | bfd_set_section_flags (stdoutput, rdata_section, | |
3564 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
3565 | | SEC_READONLY | SEC_DATA )); | |
3566 | ||
3567 | bfd_set_section_alignment (stdoutput, rdata_section, 2); | |
3568 | } | |
3569 | else | |
3570 | { | |
3571 | rdata_section = subseg_new (".rdata", 0); | |
3572 | } | |
3573 | ppc_set_current_section(rdata_section); | |
3574 | } | |
3575 | ||
3576 | /* pseudo-op: .ualong | |
3577 | behaviour: much like .int, with the exception that no alignment is | |
3578 | performed. | |
3579 | FIXME: test the alignment statement | |
3580 | errors: None | |
3581 | warnings: None | |
3582 | */ | |
3583 | static void | |
3584 | ppc_ualong(ignore) | |
5480ccf3 | 3585 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3586 | { |
3587 | /* try for long */ | |
3588 | cons ( 4 ); | |
3589 | } | |
3590 | ||
3591 | /* pseudo-op: .znop <symbol name> | |
3592 | behaviour: Issue a nop instruction | |
3593 | Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using | |
3594 | the supplied symbol name. | |
3595 | errors: None | |
3596 | warnings: Missing symbol name | |
3597 | */ | |
3598 | static void | |
3599 | ppc_znop(ignore) | |
5480ccf3 | 3600 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3601 | { |
3602 | unsigned long insn; | |
3603 | const struct powerpc_opcode *opcode; | |
3604 | expressionS ex; | |
3605 | char *f; | |
3606 | ||
3607 | symbolS *sym; | |
3608 | ||
3609 | /* Strip out the symbol name */ | |
3610 | char *symbol_name; | |
3611 | char c; | |
3612 | char *name; | |
3613 | unsigned int exp; | |
3614 | flagword flags; | |
3615 | asection *sec; | |
3616 | ||
3617 | symbol_name = input_line_pointer; | |
3618 | c = get_symbol_end (); | |
3619 | ||
3620 | name = xmalloc (input_line_pointer - symbol_name + 1); | |
3621 | strcpy (name, symbol_name); | |
3622 | ||
3623 | sym = symbol_find_or_make (name); | |
3624 | ||
3625 | *input_line_pointer = c; | |
3626 | ||
3627 | SKIP_WHITESPACE (); | |
3628 | ||
3629 | /* Look up the opcode in the hash table. */ | |
3630 | opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop"); | |
3631 | ||
3632 | /* stick in the nop */ | |
3633 | insn = opcode->opcode; | |
3634 | ||
3635 | /* Write out the instruction. */ | |
3636 | f = frag_more (4); | |
3637 | md_number_to_chars (f, insn, 4); | |
3638 | fix_new (frag_now, | |
3639 | f - frag_now->fr_literal, | |
3640 | 4, | |
3641 | sym, | |
3642 | 0, | |
3643 | 0, | |
3644 | BFD_RELOC_16_GOT_PCREL); | |
3645 | ||
3646 | } | |
3647 | ||
3648 | /* pseudo-op: | |
3649 | behaviour: | |
3650 | errors: | |
3651 | warnings: | |
3652 | */ | |
3653 | static void | |
3654 | ppc_pe_comm(lcomm) | |
3655 | int lcomm; | |
3656 | { | |
3657 | register char *name; | |
3658 | register char c; | |
3659 | register char *p; | |
3660 | offsetT temp; | |
3661 | register symbolS *symbolP; | |
3662 | offsetT align; | |
3663 | ||
3664 | name = input_line_pointer; | |
3665 | c = get_symbol_end (); | |
3666 | ||
3667 | /* just after name is now '\0' */ | |
3668 | p = input_line_pointer; | |
3669 | *p = c; | |
3670 | SKIP_WHITESPACE (); | |
3671 | if (*input_line_pointer != ',') | |
3672 | { | |
3673 | as_bad (_("Expected comma after symbol-name: rest of line ignored.")); | |
3674 | ignore_rest_of_line (); | |
3675 | return; | |
3676 | } | |
3677 | ||
3678 | input_line_pointer++; /* skip ',' */ | |
3679 | if ((temp = get_absolute_expression ()) < 0) | |
3680 | { | |
3681 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp); | |
3682 | ignore_rest_of_line (); | |
3683 | return; | |
3684 | } | |
3685 | ||
3686 | if (! lcomm) | |
3687 | { | |
3688 | /* The third argument to .comm is the alignment. */ | |
3689 | if (*input_line_pointer != ',') | |
3690 | align = 3; | |
3691 | else | |
3692 | { | |
3693 | ++input_line_pointer; | |
3694 | align = get_absolute_expression (); | |
3695 | if (align <= 0) | |
3696 | { | |
3697 | as_warn (_("ignoring bad alignment")); | |
3698 | align = 3; | |
3699 | } | |
3700 | } | |
3701 | } | |
3702 | ||
3703 | *p = 0; | |
3704 | symbolP = symbol_find_or_make (name); | |
3705 | ||
3706 | *p = c; | |
3707 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) | |
3708 | { | |
3709 | as_bad (_("Ignoring attempt to re-define symbol `%s'."), | |
3710 | S_GET_NAME (symbolP)); | |
3711 | ignore_rest_of_line (); | |
3712 | return; | |
3713 | } | |
3714 | ||
3715 | if (S_GET_VALUE (symbolP)) | |
3716 | { | |
3717 | if (S_GET_VALUE (symbolP) != (valueT) temp) | |
3718 | as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."), | |
3719 | S_GET_NAME (symbolP), | |
3720 | (long) S_GET_VALUE (symbolP), | |
3721 | (long) temp); | |
3722 | } | |
3723 | else | |
3724 | { | |
3725 | S_SET_VALUE (symbolP, (valueT) temp); | |
3726 | S_SET_EXTERNAL (symbolP); | |
3727 | } | |
3728 | ||
3729 | demand_empty_rest_of_line (); | |
3730 | } | |
3731 | ||
3732 | /* | |
3733 | * implement the .section pseudo op: | |
3734 | * .section name {, "flags"} | |
3735 | * ^ ^ | |
3736 | * | +--- optional flags: 'b' for bss | |
3737 | * | 'i' for info | |
3738 | * +-- section name 'l' for lib | |
3739 | * 'n' for noload | |
3740 | * 'o' for over | |
3741 | * 'w' for data | |
3742 | * 'd' (apparently m88k for data) | |
3743 | * 'x' for text | |
3744 | * But if the argument is not a quoted string, treat it as a | |
3745 | * subsegment number. | |
3746 | * | |
3747 | * FIXME: this is a copy of the section processing from obj-coff.c, with | |
3748 | * additions/changes for the moto-pas assembler support. There are three | |
3749 | * categories: | |
3750 | * | |
3751 | * FIXME: I just noticed this. This doesn't work at all really. It it | |
3752 | * setting bits that bfd probably neither understands or uses. The | |
3753 | * correct approach (?) will have to incorporate extra fields attached | |
3754 | * to the section to hold the system specific stuff. (krk) | |
3755 | * | |
3756 | * Section Contents: | |
3757 | * 'a' - unknown - referred to in documentation, but no definition supplied | |
3758 | * 'c' - section has code | |
3759 | * 'd' - section has initialized data | |
3760 | * 'u' - section has uninitialized data | |
3761 | * 'i' - section contains directives (info) | |
3762 | * 'n' - section can be discarded | |
3763 | * 'R' - remove section at link time | |
3764 | * | |
3765 | * Section Protection: | |
3766 | * 'r' - section is readable | |
3767 | * 'w' - section is writeable | |
3768 | * 'x' - section is executable | |
3769 | * 's' - section is sharable | |
3770 | * | |
3771 | * Section Alignment: | |
3772 | * '0' - align to byte boundary | |
3773 | * '1' - align to halfword undary | |
3774 | * '2' - align to word boundary | |
3775 | * '3' - align to doubleword boundary | |
3776 | * '4' - align to quadword boundary | |
3777 | * '5' - align to 32 byte boundary | |
3778 | * '6' - align to 64 byte boundary | |
3779 | * | |
3780 | */ | |
3781 | ||
3782 | void | |
3783 | ppc_pe_section (ignore) | |
5480ccf3 | 3784 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3785 | { |
3786 | /* Strip out the section name */ | |
3787 | char *section_name; | |
3788 | char c; | |
3789 | char *name; | |
3790 | unsigned int exp; | |
3791 | flagword flags; | |
3792 | segT sec; | |
3793 | int align; | |
3794 | ||
3795 | section_name = input_line_pointer; | |
3796 | c = get_symbol_end (); | |
3797 | ||
3798 | name = xmalloc (input_line_pointer - section_name + 1); | |
3799 | strcpy (name, section_name); | |
3800 | ||
3801 | *input_line_pointer = c; | |
3802 | ||
3803 | SKIP_WHITESPACE (); | |
3804 | ||
3805 | exp = 0; | |
3806 | flags = SEC_NO_FLAGS; | |
3807 | ||
3808 | if (strcmp (name, ".idata$2") == 0) | |
3809 | { | |
3810 | align = 0; | |
3811 | } | |
3812 | else if (strcmp (name, ".idata$3") == 0) | |
3813 | { | |
3814 | align = 0; | |
3815 | } | |
3816 | else if (strcmp (name, ".idata$4") == 0) | |
3817 | { | |
3818 | align = 2; | |
3819 | } | |
3820 | else if (strcmp (name, ".idata$5") == 0) | |
3821 | { | |
3822 | align = 2; | |
3823 | } | |
3824 | else if (strcmp (name, ".idata$6") == 0) | |
3825 | { | |
3826 | align = 1; | |
3827 | } | |
3828 | else | |
3829 | align = 4; /* default alignment to 16 byte boundary */ | |
3830 | ||
3831 | if (*input_line_pointer == ',') | |
3832 | { | |
3833 | ++input_line_pointer; | |
3834 | SKIP_WHITESPACE (); | |
3835 | if (*input_line_pointer != '"') | |
3836 | exp = get_absolute_expression (); | |
3837 | else | |
3838 | { | |
3839 | ++input_line_pointer; | |
3840 | while (*input_line_pointer != '"' | |
3841 | && ! is_end_of_line[(unsigned char) *input_line_pointer]) | |
3842 | { | |
3843 | switch (*input_line_pointer) | |
3844 | { | |
3845 | /* Section Contents */ | |
3846 | case 'a': /* unknown */ | |
3847 | as_bad (_("Unsupported section attribute -- 'a'")); | |
3848 | break; | |
3849 | case 'c': /* code section */ | |
3850 | flags |= SEC_CODE; | |
3851 | break; | |
3852 | case 'd': /* section has initialized data */ | |
3853 | flags |= SEC_DATA; | |
3854 | break; | |
3855 | case 'u': /* section has uninitialized data */ | |
3856 | /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA | |
3857 | in winnt.h */ | |
3858 | flags |= SEC_ROM; | |
3859 | break; | |
3860 | case 'i': /* section contains directives (info) */ | |
3861 | /* FIXME: This is IMAGE_SCN_LNK_INFO | |
3862 | in winnt.h */ | |
3863 | flags |= SEC_HAS_CONTENTS; | |
3864 | break; | |
3865 | case 'n': /* section can be discarded */ | |
3866 | flags &=~ SEC_LOAD; | |
3867 | break; | |
3868 | case 'R': /* Remove section at link time */ | |
3869 | flags |= SEC_NEVER_LOAD; | |
3870 | break; | |
3871 | ||
3872 | /* Section Protection */ | |
3873 | case 'r': /* section is readable */ | |
3874 | flags |= IMAGE_SCN_MEM_READ; | |
3875 | break; | |
3876 | case 'w': /* section is writeable */ | |
3877 | flags |= IMAGE_SCN_MEM_WRITE; | |
3878 | break; | |
3879 | case 'x': /* section is executable */ | |
3880 | flags |= IMAGE_SCN_MEM_EXECUTE; | |
3881 | break; | |
3882 | case 's': /* section is sharable */ | |
3883 | flags |= IMAGE_SCN_MEM_SHARED; | |
3884 | break; | |
3885 | ||
3886 | /* Section Alignment */ | |
3887 | case '0': /* align to byte boundary */ | |
3888 | flags |= IMAGE_SCN_ALIGN_1BYTES; | |
3889 | align = 0; | |
3890 | break; | |
3891 | case '1': /* align to halfword boundary */ | |
3892 | flags |= IMAGE_SCN_ALIGN_2BYTES; | |
3893 | align = 1; | |
3894 | break; | |
3895 | case '2': /* align to word boundary */ | |
3896 | flags |= IMAGE_SCN_ALIGN_4BYTES; | |
3897 | align = 2; | |
3898 | break; | |
3899 | case '3': /* align to doubleword boundary */ | |
3900 | flags |= IMAGE_SCN_ALIGN_8BYTES; | |
3901 | align = 3; | |
3902 | break; | |
3903 | case '4': /* align to quadword boundary */ | |
3904 | flags |= IMAGE_SCN_ALIGN_16BYTES; | |
3905 | align = 4; | |
3906 | break; | |
3907 | case '5': /* align to 32 byte boundary */ | |
3908 | flags |= IMAGE_SCN_ALIGN_32BYTES; | |
3909 | align = 5; | |
3910 | break; | |
3911 | case '6': /* align to 64 byte boundary */ | |
3912 | flags |= IMAGE_SCN_ALIGN_64BYTES; | |
3913 | align = 6; | |
3914 | break; | |
3915 | ||
3916 | default: | |
3917 | as_bad(_("unknown section attribute '%c'"), | |
3918 | *input_line_pointer); | |
3919 | break; | |
3920 | } | |
3921 | ++input_line_pointer; | |
3922 | } | |
3923 | if (*input_line_pointer == '"') | |
3924 | ++input_line_pointer; | |
3925 | } | |
3926 | } | |
3927 | ||
3928 | sec = subseg_new (name, (subsegT) exp); | |
3929 | ||
3930 | ppc_set_current_section(sec); | |
3931 | ||
3932 | if (flags != SEC_NO_FLAGS) | |
3933 | { | |
3934 | if (! bfd_set_section_flags (stdoutput, sec, flags)) | |
3935 | as_bad (_("error setting flags for \"%s\": %s"), | |
3936 | bfd_section_name (stdoutput, sec), | |
3937 | bfd_errmsg (bfd_get_error ())); | |
3938 | } | |
3939 | ||
3940 | bfd_set_section_alignment(stdoutput, sec, align); | |
3941 | ||
3942 | } | |
3943 | ||
3944 | static void | |
3945 | ppc_pe_function (ignore) | |
5480ccf3 | 3946 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3947 | { |
3948 | char *name; | |
3949 | char endc; | |
3950 | symbolS *ext_sym; | |
3951 | ||
3952 | name = input_line_pointer; | |
3953 | endc = get_symbol_end (); | |
3954 | ||
3955 | ext_sym = symbol_find_or_make (name); | |
3956 | ||
3957 | *input_line_pointer = endc; | |
3958 | ||
3959 | S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT); | |
3960 | SF_SET_FUNCTION (ext_sym); | |
3961 | SF_SET_PROCESS (ext_sym); | |
3962 | coff_add_linesym (ext_sym); | |
3963 | ||
3964 | demand_empty_rest_of_line (); | |
3965 | } | |
3966 | ||
3967 | static void | |
3968 | ppc_pe_tocd (ignore) | |
5480ccf3 | 3969 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3970 | { |
3971 | if (tocdata_section == 0) | |
3972 | { | |
3973 | tocdata_section = subseg_new (".tocd", 0); | |
3974 | /* FIXME: section flags won't work */ | |
3975 | bfd_set_section_flags (stdoutput, tocdata_section, | |
3976 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
3977 | | SEC_READONLY | SEC_DATA )); | |
3978 | ||
3979 | bfd_set_section_alignment (stdoutput, tocdata_section, 2); | |
3980 | } | |
3981 | else | |
3982 | { | |
3983 | rdata_section = subseg_new (".tocd", 0); | |
3984 | } | |
3985 | ||
3986 | ppc_set_current_section(tocdata_section); | |
3987 | ||
3988 | demand_empty_rest_of_line (); | |
3989 | } | |
3990 | ||
3991 | /* Don't adjust TOC relocs to use the section symbol. */ | |
3992 | ||
3993 | int | |
3994 | ppc_pe_fix_adjustable (fix) | |
3995 | fixS *fix; | |
3996 | { | |
3997 | return fix->fx_r_type != BFD_RELOC_PPC_TOC16; | |
3998 | } | |
3999 | ||
4000 | #endif | |
4001 | \f | |
4002 | #ifdef OBJ_XCOFF | |
4003 | ||
4004 | /* XCOFF specific symbol and file handling. */ | |
4005 | ||
4006 | /* Canonicalize the symbol name. We use the to force the suffix, if | |
4007 | any, to use square brackets, and to be in upper case. */ | |
4008 | ||
4009 | char * | |
4010 | ppc_canonicalize_symbol_name (name) | |
4011 | char *name; | |
4012 | { | |
4013 | char *s; | |
4014 | ||
4015 | if (ppc_stab_symbol) | |
4016 | return name; | |
4017 | ||
4018 | for (s = name; *s != '\0' && *s != '{' && *s != '['; s++) | |
4019 | ; | |
4020 | if (*s != '\0') | |
4021 | { | |
4022 | char brac; | |
4023 | ||
4024 | if (*s == '[') | |
4025 | brac = ']'; | |
4026 | else | |
4027 | { | |
4028 | *s = '['; | |
4029 | brac = '}'; | |
4030 | } | |
4031 | ||
4032 | for (s++; *s != '\0' && *s != brac; s++) | |
4033 | if (islower (*s)) | |
4034 | *s = toupper (*s); | |
4035 | ||
4036 | if (*s == '\0' || s[1] != '\0') | |
4037 | as_bad (_("bad symbol suffix")); | |
4038 | ||
4039 | *s = ']'; | |
4040 | } | |
4041 | ||
4042 | return name; | |
4043 | } | |
4044 | ||
4045 | /* Set the class of a symbol based on the suffix, if any. This is | |
4046 | called whenever a new symbol is created. */ | |
4047 | ||
4048 | void | |
4049 | ppc_symbol_new_hook (sym) | |
4050 | symbolS *sym; | |
4051 | { | |
809ffe0d | 4052 | struct ppc_tc_sy *tc; |
252b5132 RH |
4053 | const char *s; |
4054 | ||
809ffe0d ILT |
4055 | tc = symbol_get_tc (sym); |
4056 | tc->next = NULL; | |
4057 | tc->output = 0; | |
4058 | tc->class = -1; | |
4059 | tc->real_name = NULL; | |
4060 | tc->subseg = 0; | |
4061 | tc->align = 0; | |
4062 | tc->size = NULL; | |
4063 | tc->within = NULL; | |
252b5132 RH |
4064 | |
4065 | if (ppc_stab_symbol) | |
4066 | return; | |
4067 | ||
4068 | s = strchr (S_GET_NAME (sym), '['); | |
4069 | if (s == (const char *) NULL) | |
4070 | { | |
4071 | /* There is no suffix. */ | |
4072 | return; | |
4073 | } | |
4074 | ||
4075 | ++s; | |
4076 | ||
4077 | switch (s[0]) | |
4078 | { | |
4079 | case 'B': | |
4080 | if (strcmp (s, "BS]") == 0) | |
809ffe0d | 4081 | tc->class = XMC_BS; |
252b5132 RH |
4082 | break; |
4083 | case 'D': | |
4084 | if (strcmp (s, "DB]") == 0) | |
809ffe0d | 4085 | tc->class = XMC_DB; |
252b5132 | 4086 | else if (strcmp (s, "DS]") == 0) |
809ffe0d | 4087 | tc->class = XMC_DS; |
252b5132 RH |
4088 | break; |
4089 | case 'G': | |
4090 | if (strcmp (s, "GL]") == 0) | |
809ffe0d | 4091 | tc->class = XMC_GL; |
252b5132 RH |
4092 | break; |
4093 | case 'P': | |
4094 | if (strcmp (s, "PR]") == 0) | |
809ffe0d | 4095 | tc->class = XMC_PR; |
252b5132 RH |
4096 | break; |
4097 | case 'R': | |
4098 | if (strcmp (s, "RO]") == 0) | |
809ffe0d | 4099 | tc->class = XMC_RO; |
252b5132 | 4100 | else if (strcmp (s, "RW]") == 0) |
809ffe0d | 4101 | tc->class = XMC_RW; |
252b5132 RH |
4102 | break; |
4103 | case 'S': | |
4104 | if (strcmp (s, "SV]") == 0) | |
809ffe0d | 4105 | tc->class = XMC_SV; |
252b5132 RH |
4106 | break; |
4107 | case 'T': | |
4108 | if (strcmp (s, "TC]") == 0) | |
809ffe0d | 4109 | tc->class = XMC_TC; |
252b5132 | 4110 | else if (strcmp (s, "TI]") == 0) |
809ffe0d | 4111 | tc->class = XMC_TI; |
252b5132 | 4112 | else if (strcmp (s, "TB]") == 0) |
809ffe0d | 4113 | tc->class = XMC_TB; |
252b5132 | 4114 | else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0) |
809ffe0d | 4115 | tc->class = XMC_TC0; |
252b5132 RH |
4116 | break; |
4117 | case 'U': | |
4118 | if (strcmp (s, "UA]") == 0) | |
809ffe0d | 4119 | tc->class = XMC_UA; |
252b5132 | 4120 | else if (strcmp (s, "UC]") == 0) |
809ffe0d | 4121 | tc->class = XMC_UC; |
252b5132 RH |
4122 | break; |
4123 | case 'X': | |
4124 | if (strcmp (s, "XO]") == 0) | |
809ffe0d | 4125 | tc->class = XMC_XO; |
252b5132 RH |
4126 | break; |
4127 | } | |
4128 | ||
809ffe0d | 4129 | if (tc->class == -1) |
252b5132 RH |
4130 | as_bad (_("Unrecognized symbol suffix")); |
4131 | } | |
4132 | ||
4133 | /* Set the class of a label based on where it is defined. This | |
4134 | handles symbols without suffixes. Also, move the symbol so that it | |
4135 | follows the csect symbol. */ | |
4136 | ||
4137 | void | |
4138 | ppc_frob_label (sym) | |
4139 | symbolS *sym; | |
4140 | { | |
4141 | if (ppc_current_csect != (symbolS *) NULL) | |
4142 | { | |
809ffe0d ILT |
4143 | if (symbol_get_tc (sym)->class == -1) |
4144 | symbol_get_tc (sym)->class = symbol_get_tc (ppc_current_csect)->class; | |
252b5132 RH |
4145 | |
4146 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
809ffe0d ILT |
4147 | symbol_append (sym, symbol_get_tc (ppc_current_csect)->within, |
4148 | &symbol_rootP, &symbol_lastP); | |
4149 | symbol_get_tc (ppc_current_csect)->within = sym; | |
252b5132 RH |
4150 | } |
4151 | } | |
4152 | ||
4153 | /* This variable is set by ppc_frob_symbol if any absolute symbols are | |
4154 | seen. It tells ppc_adjust_symtab whether it needs to look through | |
4155 | the symbols. */ | |
4156 | ||
4157 | static boolean ppc_saw_abs; | |
4158 | ||
4159 | /* Change the name of a symbol just before writing it out. Set the | |
4160 | real name if the .rename pseudo-op was used. Otherwise, remove any | |
4161 | class suffix. Return 1 if the symbol should not be included in the | |
4162 | symbol table. */ | |
4163 | ||
4164 | int | |
4165 | ppc_frob_symbol (sym) | |
4166 | symbolS *sym; | |
4167 | { | |
4168 | static symbolS *ppc_last_function; | |
4169 | static symbolS *set_end; | |
4170 | ||
4171 | /* Discard symbols that should not be included in the output symbol | |
4172 | table. */ | |
809ffe0d ILT |
4173 | if (! symbol_used_in_reloc_p (sym) |
4174 | && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0 | |
252b5132 | 4175 | || (! S_IS_EXTERNAL (sym) |
809ffe0d | 4176 | && ! symbol_get_tc (sym)->output |
252b5132 RH |
4177 | && S_GET_STORAGE_CLASS (sym) != C_FILE))) |
4178 | return 1; | |
4179 | ||
809ffe0d ILT |
4180 | if (symbol_get_tc (sym)->real_name != (char *) NULL) |
4181 | S_SET_NAME (sym, symbol_get_tc (sym)->real_name); | |
252b5132 RH |
4182 | else |
4183 | { | |
4184 | const char *name; | |
4185 | const char *s; | |
4186 | ||
4187 | name = S_GET_NAME (sym); | |
4188 | s = strchr (name, '['); | |
4189 | if (s != (char *) NULL) | |
4190 | { | |
4191 | unsigned int len; | |
4192 | char *snew; | |
4193 | ||
4194 | len = s - name; | |
4195 | snew = xmalloc (len + 1); | |
4196 | memcpy (snew, name, len); | |
4197 | snew[len] = '\0'; | |
4198 | ||
4199 | S_SET_NAME (sym, snew); | |
4200 | } | |
4201 | } | |
4202 | ||
4203 | if (set_end != (symbolS *) NULL) | |
4204 | { | |
4205 | SA_SET_SYM_ENDNDX (set_end, sym); | |
4206 | set_end = NULL; | |
4207 | } | |
4208 | ||
4209 | if (SF_GET_FUNCTION (sym)) | |
4210 | { | |
4211 | if (ppc_last_function != (symbolS *) NULL) | |
4212 | as_bad (_("two .function pseudo-ops with no intervening .ef")); | |
4213 | ppc_last_function = sym; | |
809ffe0d | 4214 | if (symbol_get_tc (sym)->size != (symbolS *) NULL) |
252b5132 | 4215 | { |
809ffe0d ILT |
4216 | resolve_symbol_value (symbol_get_tc (sym)->size, 1); |
4217 | SA_SET_SYM_FSIZE (sym, | |
4218 | (long) S_GET_VALUE (symbol_get_tc (sym)->size)); | |
252b5132 RH |
4219 | } |
4220 | } | |
4221 | else if (S_GET_STORAGE_CLASS (sym) == C_FCN | |
4222 | && strcmp (S_GET_NAME (sym), ".ef") == 0) | |
4223 | { | |
4224 | if (ppc_last_function == (symbolS *) NULL) | |
4225 | as_bad (_(".ef with no preceding .function")); | |
4226 | else | |
4227 | { | |
4228 | set_end = ppc_last_function; | |
4229 | ppc_last_function = NULL; | |
4230 | ||
4231 | /* We don't have a C_EFCN symbol, but we need to force the | |
4232 | COFF backend to believe that it has seen one. */ | |
4233 | coff_last_function = NULL; | |
4234 | } | |
4235 | } | |
4236 | ||
4237 | if (! S_IS_EXTERNAL (sym) | |
809ffe0d | 4238 | && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0 |
252b5132 RH |
4239 | && S_GET_STORAGE_CLASS (sym) != C_FILE |
4240 | && S_GET_STORAGE_CLASS (sym) != C_FCN | |
4241 | && S_GET_STORAGE_CLASS (sym) != C_BLOCK | |
4242 | && S_GET_STORAGE_CLASS (sym) != C_BSTAT | |
4243 | && S_GET_STORAGE_CLASS (sym) != C_ESTAT | |
4244 | && S_GET_STORAGE_CLASS (sym) != C_BINCL | |
4245 | && S_GET_STORAGE_CLASS (sym) != C_EINCL | |
4246 | && S_GET_SEGMENT (sym) != ppc_coff_debug_section) | |
4247 | S_SET_STORAGE_CLASS (sym, C_HIDEXT); | |
4248 | ||
4249 | if (S_GET_STORAGE_CLASS (sym) == C_EXT | |
4250 | || S_GET_STORAGE_CLASS (sym) == C_HIDEXT) | |
4251 | { | |
4252 | int i; | |
4253 | union internal_auxent *a; | |
4254 | ||
4255 | /* Create a csect aux. */ | |
4256 | i = S_GET_NUMBER_AUXILIARY (sym); | |
4257 | S_SET_NUMBER_AUXILIARY (sym, i + 1); | |
809ffe0d ILT |
4258 | a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent; |
4259 | if (symbol_get_tc (sym)->class == XMC_TC0) | |
252b5132 RH |
4260 | { |
4261 | /* This is the TOC table. */ | |
4262 | know (strcmp (S_GET_NAME (sym), "TOC") == 0); | |
4263 | a->x_csect.x_scnlen.l = 0; | |
4264 | a->x_csect.x_smtyp = (2 << 3) | XTY_SD; | |
4265 | } | |
809ffe0d | 4266 | else if (symbol_get_tc (sym)->subseg != 0) |
252b5132 RH |
4267 | { |
4268 | /* This is a csect symbol. x_scnlen is the size of the | |
4269 | csect. */ | |
809ffe0d | 4270 | if (symbol_get_tc (sym)->next == (symbolS *) NULL) |
252b5132 RH |
4271 | a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput, |
4272 | S_GET_SEGMENT (sym)) | |
4273 | - S_GET_VALUE (sym)); | |
4274 | else | |
4275 | { | |
809ffe0d ILT |
4276 | resolve_symbol_value (symbol_get_tc (sym)->next, 1); |
4277 | a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next) | |
252b5132 RH |
4278 | - S_GET_VALUE (sym)); |
4279 | } | |
809ffe0d | 4280 | a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD; |
252b5132 RH |
4281 | } |
4282 | else if (S_GET_SEGMENT (sym) == bss_section) | |
4283 | { | |
4284 | /* This is a common symbol. */ | |
809ffe0d ILT |
4285 | a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset; |
4286 | a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM; | |
252b5132 | 4287 | if (S_IS_EXTERNAL (sym)) |
809ffe0d | 4288 | symbol_get_tc (sym)->class = XMC_RW; |
252b5132 | 4289 | else |
809ffe0d | 4290 | symbol_get_tc (sym)->class = XMC_BS; |
252b5132 RH |
4291 | } |
4292 | else if (S_GET_SEGMENT (sym) == absolute_section) | |
4293 | { | |
4294 | /* This is an absolute symbol. The csect will be created by | |
4295 | ppc_adjust_symtab. */ | |
4296 | ppc_saw_abs = true; | |
4297 | a->x_csect.x_smtyp = XTY_LD; | |
809ffe0d ILT |
4298 | if (symbol_get_tc (sym)->class == -1) |
4299 | symbol_get_tc (sym)->class = XMC_XO; | |
252b5132 RH |
4300 | } |
4301 | else if (! S_IS_DEFINED (sym)) | |
4302 | { | |
4303 | /* This is an external symbol. */ | |
4304 | a->x_csect.x_scnlen.l = 0; | |
4305 | a->x_csect.x_smtyp = XTY_ER; | |
4306 | } | |
809ffe0d | 4307 | else if (symbol_get_tc (sym)->class == XMC_TC) |
252b5132 RH |
4308 | { |
4309 | symbolS *next; | |
4310 | ||
4311 | /* This is a TOC definition. x_scnlen is the size of the | |
4312 | TOC entry. */ | |
4313 | next = symbol_next (sym); | |
809ffe0d | 4314 | while (symbol_get_tc (next)->class == XMC_TC0) |
252b5132 RH |
4315 | next = symbol_next (next); |
4316 | if (next == (symbolS *) NULL | |
809ffe0d | 4317 | || symbol_get_tc (next)->class != XMC_TC) |
252b5132 RH |
4318 | { |
4319 | if (ppc_after_toc_frag == (fragS *) NULL) | |
4320 | a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput, | |
4321 | data_section) | |
4322 | - S_GET_VALUE (sym)); | |
4323 | else | |
4324 | a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address | |
4325 | - S_GET_VALUE (sym)); | |
4326 | } | |
4327 | else | |
4328 | { | |
4329 | resolve_symbol_value (next, 1); | |
4330 | a->x_csect.x_scnlen.l = (S_GET_VALUE (next) | |
4331 | - S_GET_VALUE (sym)); | |
4332 | } | |
4333 | a->x_csect.x_smtyp = (2 << 3) | XTY_SD; | |
4334 | } | |
4335 | else | |
4336 | { | |
4337 | symbolS *csect; | |
4338 | ||
4339 | /* This is a normal symbol definition. x_scnlen is the | |
4340 | symbol index of the containing csect. */ | |
4341 | if (S_GET_SEGMENT (sym) == text_section) | |
4342 | csect = ppc_text_csects; | |
4343 | else if (S_GET_SEGMENT (sym) == data_section) | |
4344 | csect = ppc_data_csects; | |
4345 | else | |
4346 | abort (); | |
4347 | ||
4348 | /* Skip the initial dummy symbol. */ | |
809ffe0d | 4349 | csect = symbol_get_tc (csect)->next; |
252b5132 RH |
4350 | |
4351 | if (csect == (symbolS *) NULL) | |
4352 | { | |
4353 | as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym)); | |
4354 | a->x_csect.x_scnlen.l = 0; | |
4355 | } | |
4356 | else | |
4357 | { | |
809ffe0d | 4358 | while (symbol_get_tc (csect)->next != (symbolS *) NULL) |
252b5132 | 4359 | { |
809ffe0d ILT |
4360 | resolve_symbol_value (symbol_get_tc (csect)->next, 1); |
4361 | if (S_GET_VALUE (symbol_get_tc (csect)->next) | |
4362 | > S_GET_VALUE (sym)) | |
252b5132 | 4363 | break; |
809ffe0d | 4364 | csect = symbol_get_tc (csect)->next; |
252b5132 RH |
4365 | } |
4366 | ||
809ffe0d ILT |
4367 | a->x_csect.x_scnlen.p = |
4368 | coffsymbol (symbol_get_bfdsym (csect))->native; | |
4369 | coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen = | |
4370 | 1; | |
252b5132 RH |
4371 | } |
4372 | a->x_csect.x_smtyp = XTY_LD; | |
4373 | } | |
4374 | ||
4375 | a->x_csect.x_parmhash = 0; | |
4376 | a->x_csect.x_snhash = 0; | |
809ffe0d | 4377 | if (symbol_get_tc (sym)->class == -1) |
252b5132 RH |
4378 | a->x_csect.x_smclas = XMC_PR; |
4379 | else | |
809ffe0d | 4380 | a->x_csect.x_smclas = symbol_get_tc (sym)->class; |
252b5132 RH |
4381 | a->x_csect.x_stab = 0; |
4382 | a->x_csect.x_snstab = 0; | |
4383 | ||
4384 | /* Don't let the COFF backend resort these symbols. */ | |
809ffe0d | 4385 | symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END; |
252b5132 RH |
4386 | } |
4387 | else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT) | |
4388 | { | |
4389 | /* We want the value to be the symbol index of the referenced | |
4390 | csect symbol. BFD will do that for us if we set the right | |
4391 | flags. */ | |
4392 | S_SET_VALUE (sym, | |
809ffe0d ILT |
4393 | ((valueT) |
4394 | coffsymbol (symbol_get_bfdsym | |
4395 | (symbol_get_tc (sym)->within))->native)); | |
4396 | coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1; | |
252b5132 RH |
4397 | } |
4398 | else if (S_GET_STORAGE_CLASS (sym) == C_STSYM) | |
4399 | { | |
4400 | symbolS *block; | |
4401 | symbolS *csect; | |
4402 | ||
4403 | /* The value is the offset from the enclosing csect. */ | |
809ffe0d ILT |
4404 | block = symbol_get_tc (sym)->within; |
4405 | csect = symbol_get_tc (block)->within; | |
252b5132 RH |
4406 | resolve_symbol_value (csect, 1); |
4407 | S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect)); | |
4408 | } | |
4409 | else if (S_GET_STORAGE_CLASS (sym) == C_BINCL | |
4410 | || S_GET_STORAGE_CLASS (sym) == C_EINCL) | |
4411 | { | |
4412 | /* We want the value to be a file offset into the line numbers. | |
4413 | BFD will do that for us if we set the right flags. We have | |
4414 | already set the value correctly. */ | |
809ffe0d | 4415 | coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1; |
252b5132 RH |
4416 | } |
4417 | ||
4418 | return 0; | |
4419 | } | |
4420 | ||
4421 | /* Adjust the symbol table. This creates csect symbols for all | |
4422 | absolute symbols. */ | |
4423 | ||
4424 | void | |
4425 | ppc_adjust_symtab () | |
4426 | { | |
4427 | symbolS *sym; | |
4428 | ||
4429 | if (! ppc_saw_abs) | |
4430 | return; | |
4431 | ||
4432 | for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym)) | |
4433 | { | |
4434 | symbolS *csect; | |
4435 | int i; | |
4436 | union internal_auxent *a; | |
4437 | ||
4438 | if (S_GET_SEGMENT (sym) != absolute_section) | |
4439 | continue; | |
4440 | ||
4441 | csect = symbol_create (".abs[XO]", absolute_section, | |
4442 | S_GET_VALUE (sym), &zero_address_frag); | |
809ffe0d | 4443 | symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym); |
252b5132 RH |
4444 | S_SET_STORAGE_CLASS (csect, C_HIDEXT); |
4445 | i = S_GET_NUMBER_AUXILIARY (csect); | |
4446 | S_SET_NUMBER_AUXILIARY (csect, i + 1); | |
809ffe0d | 4447 | a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent; |
252b5132 RH |
4448 | a->x_csect.x_scnlen.l = 0; |
4449 | a->x_csect.x_smtyp = XTY_SD; | |
4450 | a->x_csect.x_parmhash = 0; | |
4451 | a->x_csect.x_snhash = 0; | |
4452 | a->x_csect.x_smclas = XMC_XO; | |
4453 | a->x_csect.x_stab = 0; | |
4454 | a->x_csect.x_snstab = 0; | |
4455 | ||
4456 | symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP); | |
4457 | ||
4458 | i = S_GET_NUMBER_AUXILIARY (sym); | |
809ffe0d ILT |
4459 | a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent; |
4460 | a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native; | |
4461 | coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1; | |
252b5132 RH |
4462 | } |
4463 | ||
4464 | ppc_saw_abs = false; | |
4465 | } | |
4466 | ||
4467 | /* Set the VMA for a section. This is called on all the sections in | |
4468 | turn. */ | |
4469 | ||
4470 | void | |
4471 | ppc_frob_section (sec) | |
4472 | asection *sec; | |
4473 | { | |
4474 | static bfd_size_type vma = 0; | |
4475 | ||
4476 | bfd_set_section_vma (stdoutput, sec, vma); | |
4477 | vma += bfd_section_size (stdoutput, sec); | |
4478 | } | |
4479 | ||
4480 | #endif /* OBJ_XCOFF */ | |
4481 | \f | |
4482 | /* Turn a string in input_line_pointer into a floating point constant | |
bc0d738a NC |
4483 | of type TYPE, and store the appropriate bytes in *LITP. The number |
4484 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
252b5132 RH |
4485 | returned, or NULL on OK. */ |
4486 | ||
4487 | char * | |
4488 | md_atof (type, litp, sizep) | |
4489 | int type; | |
4490 | char *litp; | |
4491 | int *sizep; | |
4492 | { | |
4493 | int prec; | |
4494 | LITTLENUM_TYPE words[4]; | |
4495 | char *t; | |
4496 | int i; | |
4497 | ||
4498 | switch (type) | |
4499 | { | |
4500 | case 'f': | |
4501 | prec = 2; | |
4502 | break; | |
4503 | ||
4504 | case 'd': | |
4505 | prec = 4; | |
4506 | break; | |
4507 | ||
4508 | default: | |
4509 | *sizep = 0; | |
4510 | return _("bad call to md_atof"); | |
4511 | } | |
4512 | ||
4513 | t = atof_ieee (input_line_pointer, type, words); | |
4514 | if (t) | |
4515 | input_line_pointer = t; | |
4516 | ||
4517 | *sizep = prec * 2; | |
4518 | ||
4519 | if (target_big_endian) | |
4520 | { | |
4521 | for (i = 0; i < prec; i++) | |
4522 | { | |
4523 | md_number_to_chars (litp, (valueT) words[i], 2); | |
4524 | litp += 2; | |
4525 | } | |
4526 | } | |
4527 | else | |
4528 | { | |
4529 | for (i = prec - 1; i >= 0; i--) | |
4530 | { | |
4531 | md_number_to_chars (litp, (valueT) words[i], 2); | |
4532 | litp += 2; | |
4533 | } | |
4534 | } | |
4535 | ||
4536 | return NULL; | |
4537 | } | |
4538 | ||
4539 | /* Write a value out to the object file, using the appropriate | |
4540 | endianness. */ | |
4541 | ||
4542 | void | |
4543 | md_number_to_chars (buf, val, n) | |
4544 | char *buf; | |
4545 | valueT val; | |
4546 | int n; | |
4547 | { | |
4548 | if (target_big_endian) | |
4549 | number_to_chars_bigendian (buf, val, n); | |
4550 | else | |
4551 | number_to_chars_littleendian (buf, val, n); | |
4552 | } | |
4553 | ||
4554 | /* Align a section (I don't know why this is machine dependent). */ | |
4555 | ||
4556 | valueT | |
4557 | md_section_align (seg, addr) | |
4558 | asection *seg; | |
4559 | valueT addr; | |
4560 | { | |
4561 | int align = bfd_get_section_alignment (stdoutput, seg); | |
4562 | ||
4563 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
4564 | } | |
4565 | ||
4566 | /* We don't have any form of relaxing. */ | |
4567 | ||
4568 | int | |
4569 | md_estimate_size_before_relax (fragp, seg) | |
92161534 ILT |
4570 | fragS *fragp ATTRIBUTE_UNUSED; |
4571 | asection *seg ATTRIBUTE_UNUSED; | |
252b5132 RH |
4572 | { |
4573 | abort (); | |
4574 | return 0; | |
4575 | } | |
4576 | ||
4577 | /* Convert a machine dependent frag. We never generate these. */ | |
4578 | ||
4579 | void | |
4580 | md_convert_frag (abfd, sec, fragp) | |
92161534 ILT |
4581 | bfd *abfd ATTRIBUTE_UNUSED; |
4582 | asection *sec ATTRIBUTE_UNUSED; | |
4583 | fragS *fragp ATTRIBUTE_UNUSED; | |
252b5132 RH |
4584 | { |
4585 | abort (); | |
4586 | } | |
4587 | ||
4588 | /* We have no need to default values of symbols. */ | |
4589 | ||
4590 | /*ARGSUSED*/ | |
4591 | symbolS * | |
4592 | md_undefined_symbol (name) | |
92161534 | 4593 | char *name ATTRIBUTE_UNUSED; |
252b5132 RH |
4594 | { |
4595 | return 0; | |
4596 | } | |
4597 | \f | |
4598 | /* Functions concerning relocs. */ | |
4599 | ||
4600 | /* The location from which a PC relative jump should be calculated, | |
4601 | given a PC relative reloc. */ | |
4602 | ||
4603 | long | |
4604 | md_pcrel_from_section (fixp, sec) | |
4605 | fixS *fixp; | |
92161534 | 4606 | segT sec ATTRIBUTE_UNUSED; |
252b5132 RH |
4607 | { |
4608 | return fixp->fx_frag->fr_address + fixp->fx_where; | |
4609 | } | |
4610 | ||
4611 | #ifdef OBJ_XCOFF | |
4612 | ||
4613 | /* This is called to see whether a fixup should be adjusted to use a | |
4614 | section symbol. We take the opportunity to change a fixup against | |
4615 | a symbol in the TOC subsegment into a reloc against the | |
4616 | corresponding .tc symbol. */ | |
4617 | ||
4618 | int | |
4619 | ppc_fix_adjustable (fix) | |
4620 | fixS *fix; | |
4621 | { | |
4622 | valueT val; | |
4623 | ||
4624 | resolve_symbol_value (fix->fx_addsy, 1); | |
4625 | val = S_GET_VALUE (fix->fx_addsy); | |
4626 | if (ppc_toc_csect != (symbolS *) NULL | |
4627 | && fix->fx_addsy != (symbolS *) NULL | |
4628 | && fix->fx_addsy != ppc_toc_csect | |
4629 | && S_GET_SEGMENT (fix->fx_addsy) == data_section | |
4630 | && val >= ppc_toc_frag->fr_address | |
4631 | && (ppc_after_toc_frag == (fragS *) NULL | |
4632 | || val < ppc_after_toc_frag->fr_address)) | |
4633 | { | |
4634 | symbolS *sy; | |
4635 | ||
4636 | for (sy = symbol_next (ppc_toc_csect); | |
4637 | sy != (symbolS *) NULL; | |
4638 | sy = symbol_next (sy)) | |
4639 | { | |
809ffe0d | 4640 | if (symbol_get_tc (sy)->class == XMC_TC0) |
252b5132 | 4641 | continue; |
809ffe0d | 4642 | if (symbol_get_tc (sy)->class != XMC_TC) |
252b5132 RH |
4643 | break; |
4644 | resolve_symbol_value (sy, 1); | |
4645 | if (val == S_GET_VALUE (sy)) | |
4646 | { | |
4647 | fix->fx_addsy = sy; | |
4648 | fix->fx_addnumber = val - ppc_toc_frag->fr_address; | |
4649 | return 0; | |
4650 | } | |
4651 | } | |
4652 | ||
4653 | as_bad_where (fix->fx_file, fix->fx_line, | |
4654 | _("symbol in .toc does not match any .tc")); | |
4655 | } | |
4656 | ||
4657 | /* Possibly adjust the reloc to be against the csect. */ | |
4658 | if (fix->fx_addsy != (symbolS *) NULL | |
809ffe0d ILT |
4659 | && symbol_get_tc (fix->fx_addsy)->subseg == 0 |
4660 | && symbol_get_tc (fix->fx_addsy)->class != XMC_TC0 | |
4661 | && symbol_get_tc (fix->fx_addsy)->class != XMC_TC | |
252b5132 RH |
4662 | && S_GET_SEGMENT (fix->fx_addsy) != bss_section |
4663 | /* Don't adjust if this is a reloc in the toc section. */ | |
4664 | && (S_GET_SEGMENT (fix->fx_addsy) != data_section | |
4665 | || ppc_toc_csect == NULL | |
4666 | || val < ppc_toc_frag->fr_address | |
4667 | || (ppc_after_toc_frag != NULL | |
4668 | && val >= ppc_after_toc_frag->fr_address))) | |
4669 | { | |
4670 | symbolS *csect; | |
4671 | ||
4672 | if (S_GET_SEGMENT (fix->fx_addsy) == text_section) | |
4673 | csect = ppc_text_csects; | |
4674 | else if (S_GET_SEGMENT (fix->fx_addsy) == data_section) | |
4675 | csect = ppc_data_csects; | |
4676 | else | |
4677 | abort (); | |
4678 | ||
4679 | /* Skip the initial dummy symbol. */ | |
809ffe0d | 4680 | csect = symbol_get_tc (csect)->next; |
252b5132 RH |
4681 | |
4682 | if (csect != (symbolS *) NULL) | |
4683 | { | |
809ffe0d ILT |
4684 | while (symbol_get_tc (csect)->next != (symbolS *) NULL |
4685 | && (symbol_get_frag (symbol_get_tc (csect)->next)->fr_address | |
2c1c4c62 | 4686 | <= val)) |
252b5132 RH |
4687 | { |
4688 | /* If the csect address equals the symbol value, then we | |
4689 | have to look through the full symbol table to see | |
4690 | whether this is the csect we want. Note that we will | |
4691 | only get here if the csect has zero length. */ | |
2c1c4c62 | 4692 | if ((symbol_get_frag (csect)->fr_address == val) |
252b5132 RH |
4693 | && S_GET_VALUE (csect) == S_GET_VALUE (fix->fx_addsy)) |
4694 | { | |
4695 | symbolS *scan; | |
4696 | ||
809ffe0d | 4697 | for (scan = symbol_next (csect); |
252b5132 | 4698 | scan != NULL; |
809ffe0d | 4699 | scan = symbol_next (scan)) |
252b5132 | 4700 | { |
809ffe0d | 4701 | if (symbol_get_tc (scan)->subseg != 0) |
252b5132 RH |
4702 | break; |
4703 | if (scan == fix->fx_addsy) | |
4704 | break; | |
4705 | } | |
4706 | ||
4707 | /* If we found the symbol before the next csect | |
4708 | symbol, then this is the csect we want. */ | |
4709 | if (scan == fix->fx_addsy) | |
4710 | break; | |
4711 | } | |
4712 | ||
809ffe0d | 4713 | csect = symbol_get_tc (csect)->next; |
252b5132 RH |
4714 | } |
4715 | ||
4716 | fix->fx_offset += (S_GET_VALUE (fix->fx_addsy) | |
809ffe0d | 4717 | - symbol_get_frag (csect)->fr_address); |
252b5132 RH |
4718 | fix->fx_addsy = csect; |
4719 | } | |
4720 | } | |
4721 | ||
4722 | /* Adjust a reloc against a .lcomm symbol to be against the base | |
4723 | .lcomm. */ | |
4724 | if (fix->fx_addsy != (symbolS *) NULL | |
4725 | && S_GET_SEGMENT (fix->fx_addsy) == bss_section | |
4726 | && ! S_IS_EXTERNAL (fix->fx_addsy)) | |
4727 | { | |
809ffe0d ILT |
4728 | resolve_symbol_value (symbol_get_frag (fix->fx_addsy)->fr_symbol, 1); |
4729 | fix->fx_offset += | |
4730 | (S_GET_VALUE (fix->fx_addsy) | |
4731 | - S_GET_VALUE (symbol_get_frag (fix->fx_addsy)->fr_symbol)); | |
4732 | fix->fx_addsy = symbol_get_frag (fix->fx_addsy)->fr_symbol; | |
252b5132 RH |
4733 | } |
4734 | ||
4735 | return 0; | |
4736 | } | |
4737 | ||
4738 | /* A reloc from one csect to another must be kept. The assembler | |
4739 | will, of course, keep relocs between sections, and it will keep | |
4740 | absolute relocs, but we need to force it to keep PC relative relocs | |
4741 | between two csects in the same section. */ | |
4742 | ||
4743 | int | |
4744 | ppc_force_relocation (fix) | |
4745 | fixS *fix; | |
4746 | { | |
4747 | /* At this point fix->fx_addsy should already have been converted to | |
4748 | a csect symbol. If the csect does not include the fragment, then | |
4749 | we need to force the relocation. */ | |
4750 | if (fix->fx_pcrel | |
4751 | && fix->fx_addsy != NULL | |
809ffe0d ILT |
4752 | && symbol_get_tc (fix->fx_addsy)->subseg != 0 |
4753 | && ((symbol_get_frag (fix->fx_addsy)->fr_address | |
4754 | > fix->fx_frag->fr_address) | |
4755 | || (symbol_get_tc (fix->fx_addsy)->next != NULL | |
4756 | && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address | |
252b5132 RH |
4757 | <= fix->fx_frag->fr_address)))) |
4758 | return 1; | |
4759 | ||
4760 | return 0; | |
4761 | } | |
4762 | ||
4763 | #endif /* OBJ_XCOFF */ | |
4764 | ||
4765 | /* See whether a symbol is in the TOC section. */ | |
4766 | ||
4767 | static int | |
4768 | ppc_is_toc_sym (sym) | |
4769 | symbolS *sym; | |
4770 | { | |
4771 | #ifdef OBJ_XCOFF | |
809ffe0d | 4772 | return symbol_get_tc (sym)->class == XMC_TC; |
252b5132 RH |
4773 | #else |
4774 | return strcmp (segment_name (S_GET_SEGMENT (sym)), ".got") == 0; | |
4775 | #endif | |
4776 | } | |
4777 | ||
4778 | /* Apply a fixup to the object code. This is called for all the | |
4779 | fixups we generated by the call to fix_new_exp, above. In the call | |
4780 | above we used a reloc code which was the largest legal reloc code | |
4781 | plus the operand index. Here we undo that to recover the operand | |
4782 | index. At this point all symbol values should be fully resolved, | |
4783 | and we attempt to completely resolve the reloc. If we can not do | |
4784 | that, we determine the correct reloc code and put it back in the | |
4785 | fixup. */ | |
4786 | ||
4787 | int | |
4788 | md_apply_fix3 (fixp, valuep, seg) | |
4789 | fixS *fixp; | |
4790 | valueT *valuep; | |
4791 | segT seg; | |
4792 | { | |
4793 | valueT value; | |
4794 | ||
4795 | #ifdef OBJ_ELF | |
4796 | value = *valuep; | |
4797 | if (fixp->fx_addsy != NULL) | |
4798 | { | |
4799 | /* `*valuep' may contain the value of the symbol on which the reloc | |
4800 | will be based; we have to remove it. */ | |
49309057 | 4801 | if (symbol_used_in_reloc_p (fixp->fx_addsy) |
252b5132 RH |
4802 | && S_GET_SEGMENT (fixp->fx_addsy) != absolute_section |
4803 | && S_GET_SEGMENT (fixp->fx_addsy) != undefined_section | |
4804 | && ! bfd_is_com_section (S_GET_SEGMENT (fixp->fx_addsy))) | |
4805 | value -= S_GET_VALUE (fixp->fx_addsy); | |
4806 | ||
4807 | /* FIXME: Why '+'? Better yet, what exactly is '*valuep' | |
4808 | supposed to be? I think this is related to various similar | |
4809 | FIXMEs in tc-i386.c and tc-sparc.c. */ | |
4810 | if (fixp->fx_pcrel) | |
4811 | value += fixp->fx_frag->fr_address + fixp->fx_where; | |
4812 | } | |
4813 | else | |
4814 | { | |
4815 | fixp->fx_done = 1; | |
4816 | } | |
4817 | #else | |
4818 | /* FIXME FIXME FIXME: The value we are passed in *valuep includes | |
4819 | the symbol values. Since we are using BFD_ASSEMBLER, if we are | |
4820 | doing this relocation the code in write.c is going to call | |
4821 | bfd_install_relocation, which is also going to use the symbol | |
4822 | value. That means that if the reloc is fully resolved we want to | |
4823 | use *valuep since bfd_install_relocation is not being used. | |
4824 | However, if the reloc is not fully resolved we do not want to use | |
4825 | *valuep, and must use fx_offset instead. However, if the reloc | |
4826 | is PC relative, we do want to use *valuep since it includes the | |
4827 | result of md_pcrel_from. This is confusing. */ | |
4828 | if (fixp->fx_addsy == (symbolS *) NULL) | |
4829 | { | |
4830 | value = *valuep; | |
4831 | fixp->fx_done = 1; | |
4832 | } | |
4833 | else if (fixp->fx_pcrel) | |
4834 | value = *valuep; | |
4835 | else | |
4836 | { | |
4837 | value = fixp->fx_offset; | |
4838 | if (fixp->fx_subsy != (symbolS *) NULL) | |
4839 | { | |
4840 | if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) | |
4841 | value -= S_GET_VALUE (fixp->fx_subsy); | |
4842 | else | |
4843 | { | |
4844 | /* We can't actually support subtracting a symbol. */ | |
4845 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
4846 | _("expression too complex")); | |
4847 | } | |
4848 | } | |
4849 | } | |
4850 | #endif | |
4851 | ||
4852 | if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED) | |
4853 | { | |
4854 | int opindex; | |
4855 | const struct powerpc_operand *operand; | |
4856 | char *where; | |
4857 | unsigned long insn; | |
4858 | ||
4859 | opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED; | |
4860 | ||
4861 | operand = &powerpc_operands[opindex]; | |
4862 | ||
4863 | #ifdef OBJ_XCOFF | |
4864 | /* It appears that an instruction like | |
4865 | l 9,LC..1(30) | |
4866 | when LC..1 is not a TOC symbol does not generate a reloc. It | |
4867 | uses the offset of LC..1 within its csect. However, .long | |
4868 | LC..1 will generate a reloc. I can't find any documentation | |
4869 | on how these cases are to be distinguished, so this is a wild | |
4870 | guess. These cases are generated by gcc -mminimal-toc. */ | |
4871 | if ((operand->flags & PPC_OPERAND_PARENS) != 0 | |
4872 | && operand->bits == 16 | |
4873 | && operand->shift == 0 | |
4874 | && operand->insert == NULL | |
4875 | && fixp->fx_addsy != NULL | |
809ffe0d ILT |
4876 | && symbol_get_tc (fixp->fx_addsy)->subseg != 0 |
4877 | && symbol_get_tc (fixp->fx_addsy)->class != XMC_TC | |
4878 | && symbol_get_tc (fixp->fx_addsy)->class != XMC_TC0 | |
252b5132 RH |
4879 | && S_GET_SEGMENT (fixp->fx_addsy) != bss_section) |
4880 | { | |
4881 | value = fixp->fx_offset; | |
4882 | fixp->fx_done = 1; | |
4883 | } | |
4884 | #endif | |
4885 | ||
4886 | /* Fetch the instruction, insert the fully resolved operand | |
4887 | value, and stuff the instruction back again. */ | |
4888 | where = fixp->fx_frag->fr_literal + fixp->fx_where; | |
4889 | if (target_big_endian) | |
4890 | insn = bfd_getb32 ((unsigned char *) where); | |
4891 | else | |
4892 | insn = bfd_getl32 ((unsigned char *) where); | |
4893 | insn = ppc_insert_operand (insn, operand, (offsetT) value, | |
4894 | fixp->fx_file, fixp->fx_line); | |
4895 | if (target_big_endian) | |
4896 | bfd_putb32 ((bfd_vma) insn, (unsigned char *) where); | |
4897 | else | |
4898 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); | |
4899 | ||
4900 | if (fixp->fx_done) | |
4901 | { | |
4902 | /* Nothing else to do here. */ | |
4903 | return 1; | |
4904 | } | |
4905 | ||
4906 | /* Determine a BFD reloc value based on the operand information. | |
4907 | We are only prepared to turn a few of the operands into | |
4908 | relocs. | |
4909 | FIXME: We need to handle the DS field at the very least. | |
4910 | FIXME: Selecting the reloc type is a bit haphazard; perhaps | |
4911 | there should be a new field in the operand table. */ | |
4912 | if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 | |
4913 | && operand->bits == 26 | |
4914 | && operand->shift == 0) | |
4915 | fixp->fx_r_type = BFD_RELOC_PPC_B26; | |
4916 | else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 | |
4917 | && operand->bits == 16 | |
4918 | && operand->shift == 0) | |
4919 | fixp->fx_r_type = BFD_RELOC_PPC_B16; | |
4920 | else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0 | |
4921 | && operand->bits == 26 | |
4922 | && operand->shift == 0) | |
4923 | fixp->fx_r_type = BFD_RELOC_PPC_BA26; | |
4924 | else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0 | |
4925 | && operand->bits == 16 | |
4926 | && operand->shift == 0) | |
4927 | fixp->fx_r_type = BFD_RELOC_PPC_BA16; | |
4928 | else if ((operand->flags & PPC_OPERAND_PARENS) != 0 | |
4929 | && operand->bits == 16 | |
4930 | && operand->shift == 0 | |
252b5132 RH |
4931 | && fixp->fx_addsy != NULL |
4932 | && ppc_is_toc_sym (fixp->fx_addsy)) | |
4933 | { | |
4934 | fixp->fx_size = 2; | |
4935 | if (target_big_endian) | |
4936 | fixp->fx_where += 2; | |
4937 | fixp->fx_r_type = BFD_RELOC_PPC_TOC16; | |
4938 | } | |
4939 | else | |
4940 | { | |
4941 | char *sfile; | |
4942 | unsigned int sline; | |
4943 | ||
4944 | /* Use expr_symbol_where to see if this is an expression | |
4945 | symbol. */ | |
4946 | if (expr_symbol_where (fixp->fx_addsy, &sfile, &sline)) | |
4947 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
4948 | _("unresolved expression that must be resolved")); | |
4949 | else | |
4950 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
4951 | _("unsupported relocation type")); | |
4952 | fixp->fx_done = 1; | |
4953 | return 1; | |
4954 | } | |
4955 | } | |
4956 | else | |
4957 | { | |
4958 | #ifdef OBJ_ELF | |
4959 | ppc_elf_validate_fix (fixp, seg); | |
4960 | #endif | |
4961 | switch (fixp->fx_r_type) | |
4962 | { | |
4963 | case BFD_RELOC_32: | |
4964 | case BFD_RELOC_CTOR: | |
4965 | if (fixp->fx_pcrel) | |
4966 | fixp->fx_r_type = BFD_RELOC_32_PCREL; | |
4967 | /* fall through */ | |
4968 | ||
4969 | case BFD_RELOC_RVA: | |
4970 | case BFD_RELOC_32_PCREL: | |
4971 | case BFD_RELOC_32_BASEREL: | |
4972 | case BFD_RELOC_PPC_EMB_NADDR32: | |
4973 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where, | |
4974 | value, 4); | |
4975 | break; | |
4976 | ||
7f6d05e8 CP |
4977 | case BFD_RELOC_64: |
4978 | if (fixp->fx_pcrel) | |
4979 | fixp->fx_r_type = BFD_RELOC_64_PCREL; | |
4980 | /* fall through */ | |
4981 | case BFD_RELOC_64_PCREL: | |
4982 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where, | |
4983 | value, 8); | |
4984 | break; | |
252b5132 RH |
4985 | case BFD_RELOC_LO16: |
4986 | case BFD_RELOC_16: | |
4987 | case BFD_RELOC_GPREL16: | |
4988 | case BFD_RELOC_16_GOT_PCREL: | |
4989 | case BFD_RELOC_16_GOTOFF: | |
4990 | case BFD_RELOC_LO16_GOTOFF: | |
4991 | case BFD_RELOC_HI16_GOTOFF: | |
4992 | case BFD_RELOC_HI16_S_GOTOFF: | |
4993 | case BFD_RELOC_LO16_BASEREL: | |
4994 | case BFD_RELOC_HI16_BASEREL: | |
4995 | case BFD_RELOC_HI16_S_BASEREL: | |
4996 | case BFD_RELOC_PPC_EMB_NADDR16: | |
4997 | case BFD_RELOC_PPC_EMB_NADDR16_LO: | |
4998 | case BFD_RELOC_PPC_EMB_NADDR16_HI: | |
4999 | case BFD_RELOC_PPC_EMB_NADDR16_HA: | |
5000 | case BFD_RELOC_PPC_EMB_SDAI16: | |
5001 | case BFD_RELOC_PPC_EMB_SDA2REL: | |
5002 | case BFD_RELOC_PPC_EMB_SDA2I16: | |
5003 | case BFD_RELOC_PPC_EMB_RELSEC16: | |
5004 | case BFD_RELOC_PPC_EMB_RELST_LO: | |
5005 | case BFD_RELOC_PPC_EMB_RELST_HI: | |
5006 | case BFD_RELOC_PPC_EMB_RELST_HA: | |
5007 | case BFD_RELOC_PPC_EMB_RELSDA: | |
5008 | case BFD_RELOC_PPC_TOC16: | |
5009 | if (fixp->fx_pcrel) | |
5010 | { | |
5011 | if (fixp->fx_addsy != NULL) | |
5012 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
5013 | _("cannot emit PC relative %s relocation against %s"), | |
5014 | bfd_get_reloc_code_name (fixp->fx_r_type), | |
5015 | S_GET_NAME (fixp->fx_addsy)); | |
5016 | else | |
5017 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
5018 | _("cannot emit PC relative %s relocation"), | |
5019 | bfd_get_reloc_code_name (fixp->fx_r_type)); | |
5020 | } | |
5021 | ||
5022 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where, | |
5023 | value, 2); | |
5024 | break; | |
5025 | ||
5026 | /* This case happens when you write, for example, | |
5027 | lis %r3,(L1-L2)@ha | |
5028 | where L1 and L2 are defined later. */ | |
5029 | case BFD_RELOC_HI16: | |
5030 | if (fixp->fx_pcrel) | |
5031 | abort (); | |
5032 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where, | |
5033 | value >> 16, 2); | |
5034 | break; | |
5035 | case BFD_RELOC_HI16_S: | |
5036 | if (fixp->fx_pcrel) | |
5037 | abort (); | |
5038 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where, | |
49309057 | 5039 | (value + 0x8000) >> 16, 2); |
252b5132 RH |
5040 | break; |
5041 | ||
5042 | /* Because SDA21 modifies the register field, the size is set to 4 | |
5043 | bytes, rather than 2, so offset it here appropriately */ | |
5044 | case BFD_RELOC_PPC_EMB_SDA21: | |
5045 | if (fixp->fx_pcrel) | |
5046 | abort (); | |
5047 | ||
5048 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where | |
5049 | + ((target_big_endian) ? 2 : 0), | |
5050 | value, 2); | |
5051 | break; | |
5052 | ||
5053 | case BFD_RELOC_8: | |
5054 | if (fixp->fx_pcrel) | |
5055 | abort (); | |
5056 | ||
5057 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where, | |
5058 | value, 1); | |
5059 | break; | |
5060 | ||
5061 | case BFD_RELOC_24_PLT_PCREL: | |
5062 | case BFD_RELOC_PPC_LOCAL24PC: | |
5063 | if (!fixp->fx_pcrel && !fixp->fx_done) | |
5064 | abort (); | |
5065 | ||
5066 | if (fixp->fx_done) | |
5067 | { | |
5068 | char *where; | |
5069 | unsigned long insn; | |
5070 | ||
5071 | /* Fetch the instruction, insert the fully resolved operand | |
5072 | value, and stuff the instruction back again. */ | |
5073 | where = fixp->fx_frag->fr_literal + fixp->fx_where; | |
5074 | if (target_big_endian) | |
5075 | insn = bfd_getb32 ((unsigned char *) where); | |
5076 | else | |
5077 | insn = bfd_getl32 ((unsigned char *) where); | |
5078 | if ((value & 3) != 0) | |
5079 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
5080 | _("must branch to an address a multiple of 4")); | |
5081 | if ((offsetT) value < -0x40000000 | |
5082 | || (offsetT) value >= 0x40000000) | |
5083 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
5084 | _("@local or @plt branch destination is too far away, %ld bytes"), | |
5085 | value); | |
5086 | insn = insn | (value & 0x03fffffc); | |
5087 | if (target_big_endian) | |
5088 | bfd_putb32 ((bfd_vma) insn, (unsigned char *) where); | |
5089 | else | |
5090 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); | |
5091 | } | |
5092 | break; | |
5093 | ||
5094 | case BFD_RELOC_VTABLE_INHERIT: | |
5095 | fixp->fx_done = 0; | |
5096 | if (fixp->fx_addsy | |
5097 | && !S_IS_DEFINED (fixp->fx_addsy) | |
5098 | && !S_IS_WEAK (fixp->fx_addsy)) | |
5099 | S_SET_WEAK (fixp->fx_addsy); | |
5100 | break; | |
5101 | ||
5102 | case BFD_RELOC_VTABLE_ENTRY: | |
5103 | fixp->fx_done = 0; | |
5104 | break; | |
5105 | ||
5106 | default: | |
5107 | fprintf(stderr, | |
5108 | _("Gas failure, reloc value %d\n"), fixp->fx_r_type); | |
5109 | fflush(stderr); | |
5110 | abort (); | |
5111 | } | |
5112 | } | |
5113 | ||
5114 | #ifdef OBJ_ELF | |
5115 | fixp->fx_addnumber = value; | |
5116 | #else | |
5117 | if (fixp->fx_r_type != BFD_RELOC_PPC_TOC16) | |
5118 | fixp->fx_addnumber = 0; | |
5119 | else | |
5120 | { | |
5121 | #ifdef TE_PE | |
5122 | fixp->fx_addnumber = 0; | |
5123 | #else | |
5124 | /* We want to use the offset within the data segment of the | |
5125 | symbol, not the actual VMA of the symbol. */ | |
5126 | fixp->fx_addnumber = | |
5127 | - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixp->fx_addsy)); | |
5128 | #endif | |
5129 | } | |
5130 | #endif | |
5131 | ||
5132 | return 1; | |
5133 | } | |
5134 | ||
5135 | /* Generate a reloc for a fixup. */ | |
5136 | ||
5137 | arelent * | |
5138 | tc_gen_reloc (seg, fixp) | |
92161534 | 5139 | asection *seg ATTRIBUTE_UNUSED; |
252b5132 RH |
5140 | fixS *fixp; |
5141 | { | |
5142 | arelent *reloc; | |
5143 | ||
5144 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
5145 | ||
49309057 ILT |
5146 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
5147 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
5148 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
5149 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
5150 | if (reloc->howto == (reloc_howto_type *) NULL) | |
5151 | { | |
5152 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
5153 | _("reloc %d not supported by object file format"), (int)fixp->fx_r_type); | |
5154 | return NULL; | |
5155 | } | |
5156 | reloc->addend = fixp->fx_addnumber; | |
5157 | ||
5158 | return reloc; | |
5159 | } |