Commit | Line | Data |
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882bdc69 | 1 | /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000) |
bf4b090c | 2 | Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc. |
882bdc69 ILT |
3 | Written by Ian Lance Taylor, Cygnus Support. |
4 | ||
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
f8a011cf MM |
18 | along with GAS; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
882bdc69 ILT |
21 | |
22 | #include <stdio.h> | |
23 | #include <ctype.h> | |
24 | #include "as.h" | |
25 | #include "subsegs.h" | |
26 | ||
27 | #include "opcode/ppc.h" | |
28 | ||
ce9a2805 MM |
29 | #ifdef OBJ_ELF |
30 | #include "elf/ppc.h" | |
31 | #endif | |
32 | ||
cd557d83 ILT |
33 | #ifdef TE_PE |
34 | #include "coff/pe.h" | |
35 | #endif | |
36 | ||
882bdc69 ILT |
37 | /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */ |
38 | ||
2c474754 | 39 | /* Tell the main code what the endianness is. */ |
882bdc69 ILT |
40 | extern int target_big_endian; |
41 | ||
2c474754 MM |
42 | /* Whether or not, we've set target_big_endian. */ |
43 | static int set_target_endian = 0; | |
44 | ||
159e6ef8 MM |
45 | /* Whether to use user friendly register names. */ |
46 | #ifndef TARGET_REG_NAMES_P | |
47 | #ifdef TE_PE | |
48 | #define TARGET_REG_NAMES_P true | |
49 | #else | |
50 | #define TARGET_REG_NAMES_P false | |
51 | #endif | |
52 | #endif | |
53 | ||
54 | static boolean reg_names_p = TARGET_REG_NAMES_P; | |
55 | ||
882bdc69 ILT |
56 | static void ppc_set_cpu PARAMS ((void)); |
57 | static unsigned long ppc_insert_operand | |
58 | PARAMS ((unsigned long insn, const struct powerpc_operand *operand, | |
59 | offsetT val, char *file, unsigned int line)); | |
60 | static void ppc_macro PARAMS ((char *str, const struct powerpc_macro *macro)); | |
61 | static void ppc_byte PARAMS ((int)); | |
62 | static int ppc_is_toc_sym PARAMS ((symbolS *sym)); | |
63 | static void ppc_tc PARAMS ((int)); | |
1f7cc434 | 64 | |
18c9057f | 65 | #ifdef OBJ_XCOFF |
882bdc69 ILT |
66 | static void ppc_comm PARAMS ((int)); |
67 | static void ppc_bb PARAMS ((int)); | |
31751d9d | 68 | static void ppc_bc PARAMS ((int)); |
882bdc69 ILT |
69 | static void ppc_bf PARAMS ((int)); |
70 | static void ppc_biei PARAMS ((int)); | |
71 | static void ppc_bs PARAMS ((int)); | |
72 | static void ppc_eb PARAMS ((int)); | |
31751d9d | 73 | static void ppc_ec PARAMS ((int)); |
882bdc69 ILT |
74 | static void ppc_ef PARAMS ((int)); |
75 | static void ppc_es PARAMS ((int)); | |
76 | static void ppc_csect PARAMS ((int)); | |
df72d2a5 | 77 | static void ppc_change_csect PARAMS ((symbolS *)); |
882bdc69 ILT |
78 | static void ppc_function PARAMS ((int)); |
79 | static void ppc_extern PARAMS ((int)); | |
80 | static void ppc_lglobl PARAMS ((int)); | |
df72d2a5 | 81 | static void ppc_section PARAMS ((int)); |
882bdc69 ILT |
82 | static void ppc_stabx PARAMS ((int)); |
83 | static void ppc_rename PARAMS ((int)); | |
84 | static void ppc_toc PARAMS ((int)); | |
fbd929fd | 85 | static void ppc_xcoff_cons PARAMS ((int)); |
882bdc69 | 86 | #endif |
1f7cc434 | 87 | |
4a6b2f8b | 88 | #ifdef OBJ_ELF |
8b1e9f12 | 89 | static bfd_reloc_code_real_type ppc_elf_suffix PARAMS ((char **, expressionS *)); |
4a6b2f8b | 90 | static void ppc_elf_cons PARAMS ((int)); |
996e146f ILT |
91 | static void ppc_elf_rdata PARAMS ((int)); |
92 | static void ppc_elf_lcomm PARAMS ((int)); | |
99146659 | 93 | static void ppc_elf_validate_fix PARAMS ((fixS *, segT)); |
4a6b2f8b | 94 | #endif |
1f7cc434 KK |
95 | |
96 | #ifdef TE_PE | |
18c9057f | 97 | static void ppc_set_current_section PARAMS ((segT)); |
1f7cc434 KK |
98 | static void ppc_previous PARAMS ((int)); |
99 | static void ppc_pdata PARAMS ((int)); | |
100 | static void ppc_ydata PARAMS ((int)); | |
101 | static void ppc_reldata PARAMS ((int)); | |
102 | static void ppc_rdata PARAMS ((int)); | |
103 | static void ppc_ualong PARAMS ((int)); | |
104 | static void ppc_znop PARAMS ((int)); | |
105 | static void ppc_pe_comm PARAMS ((int)); | |
106 | static void ppc_pe_section PARAMS ((int)); | |
1f7cc434 | 107 | static void ppc_pe_function PARAMS ((int)); |
ca0bd54f | 108 | static void ppc_pe_tocd PARAMS ((int)); |
1f7cc434 | 109 | #endif |
882bdc69 ILT |
110 | \f |
111 | /* Generic assembler global variables which must be defined by all | |
112 | targets. */ | |
113 | ||
fbd929fd | 114 | #ifdef OBJ_ELF |
b61802e7 MM |
115 | /* This string holds the chars that always start a comment. If the |
116 | pre-processor is disabled, these aren't very useful. The macro | |
117 | tc_comment_chars points to this. We use this, rather than the | |
118 | usual comment_chars, so that we can switch for Solaris conventions. */ | |
119 | static const char ppc_solaris_comment_chars[] = "#!"; | |
120 | static const char ppc_eabi_comment_chars[] = "#"; | |
121 | ||
996e146f | 122 | #ifdef TARGET_SOLARIS_COMMENT |
b61802e7 | 123 | const char *ppc_comment_chars = ppc_solaris_comment_chars; |
996e146f | 124 | #else |
b61802e7 | 125 | const char *ppc_comment_chars = ppc_eabi_comment_chars; |
996e146f | 126 | #endif |
fbd929fd ILT |
127 | #else |
128 | const char comment_chars[] = "#"; | |
129 | #endif | |
882bdc69 ILT |
130 | |
131 | /* Characters which start a comment at the beginning of a line. */ | |
132 | const char line_comment_chars[] = "#"; | |
133 | ||
134 | /* Characters which may be used to separate multiple commands on a | |
135 | single line. */ | |
136 | const char line_separator_chars[] = ";"; | |
137 | ||
138 | /* Characters which are used to indicate an exponent in a floating | |
139 | point number. */ | |
140 | const char EXP_CHARS[] = "eE"; | |
141 | ||
142 | /* Characters which mean that a number is a floating point constant, | |
143 | as in 0d1.0. */ | |
144 | const char FLT_CHARS[] = "dD"; | |
145 | \f | |
146 | /* The target specific pseudo-ops which we support. */ | |
147 | ||
148 | const pseudo_typeS md_pseudo_table[] = | |
149 | { | |
150 | /* Pseudo-ops which must be overridden. */ | |
151 | { "byte", ppc_byte, 0 }, | |
152 | ||
18c9057f | 153 | #ifdef OBJ_XCOFF |
882bdc69 ILT |
154 | /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these |
155 | legitimately belong in the obj-*.c file. However, XCOFF is based | |
156 | on COFF, and is only implemented for the RS/6000. We just use | |
157 | obj-coff.c, and add what we need here. */ | |
158 | { "comm", ppc_comm, 0 }, | |
159 | { "lcomm", ppc_comm, 1 }, | |
160 | { "bb", ppc_bb, 0 }, | |
31751d9d | 161 | { "bc", ppc_bc, 0 }, |
882bdc69 ILT |
162 | { "bf", ppc_bf, 0 }, |
163 | { "bi", ppc_biei, 0 }, | |
164 | { "bs", ppc_bs, 0 }, | |
165 | { "csect", ppc_csect, 0 }, | |
df72d2a5 | 166 | { "data", ppc_section, 'd' }, |
882bdc69 | 167 | { "eb", ppc_eb, 0 }, |
31751d9d | 168 | { "ec", ppc_ec, 0 }, |
882bdc69 ILT |
169 | { "ef", ppc_ef, 0 }, |
170 | { "ei", ppc_biei, 1 }, | |
171 | { "es", ppc_es, 0 }, | |
172 | { "extern", ppc_extern, 0 }, | |
18c9057f | 173 | { "function", ppc_function, 0 }, |
882bdc69 ILT |
174 | { "lglobl", ppc_lglobl, 0 }, |
175 | { "rename", ppc_rename, 0 }, | |
176 | { "stabx", ppc_stabx, 0 }, | |
df72d2a5 | 177 | { "text", ppc_section, 't' }, |
882bdc69 | 178 | { "toc", ppc_toc, 0 }, |
fbd929fd ILT |
179 | { "long", ppc_xcoff_cons, 2 }, |
180 | { "word", ppc_xcoff_cons, 1 }, | |
181 | { "short", ppc_xcoff_cons, 1 }, | |
882bdc69 | 182 | #endif |
1f7cc434 | 183 | |
4a6b2f8b MM |
184 | #ifdef OBJ_ELF |
185 | { "long", ppc_elf_cons, 4 }, | |
186 | { "word", ppc_elf_cons, 2 }, | |
187 | { "short", ppc_elf_cons, 2 }, | |
996e146f ILT |
188 | { "rdata", ppc_elf_rdata, 0 }, |
189 | { "rodata", ppc_elf_rdata, 0 }, | |
190 | { "lcomm", ppc_elf_lcomm, 0 }, | |
4a6b2f8b | 191 | #endif |
882bdc69 | 192 | |
1f7cc434 KK |
193 | #ifdef TE_PE |
194 | /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format */ | |
195 | { "previous", ppc_previous, 0 }, | |
196 | { "pdata", ppc_pdata, 0 }, | |
197 | { "ydata", ppc_ydata, 0 }, | |
198 | { "reldata", ppc_reldata, 0 }, | |
199 | { "rdata", ppc_rdata, 0 }, | |
200 | { "ualong", ppc_ualong, 0 }, | |
201 | { "znop", ppc_znop, 0 }, | |
202 | { "comm", ppc_pe_comm, 0 }, | |
203 | { "lcomm", ppc_pe_comm, 1 }, | |
204 | { "section", ppc_pe_section, 0 }, | |
205 | { "function", ppc_pe_function,0 }, | |
ca0bd54f | 206 | { "tocd", ppc_pe_tocd, 0 }, |
1f7cc434 KK |
207 | #endif |
208 | ||
882bdc69 ILT |
209 | /* This pseudo-op is used even when not generating XCOFF output. */ |
210 | { "tc", ppc_tc, 0 }, | |
211 | ||
212 | { NULL, NULL, 0 } | |
213 | }; | |
1f7cc434 KK |
214 | |
215 | \f | |
159e6ef8 | 216 | /* Predefined register names if -mregnames (or default for Windows NT). */ |
ca0bd54f KK |
217 | /* In general, there are lots of them, in an attempt to be compatible */ |
218 | /* with a number of other Windows NT assemblers. */ | |
219 | ||
220 | /* Structure to hold information about predefined registers. */ | |
1f7cc434 KK |
221 | struct pd_reg |
222 | { | |
223 | char *name; | |
224 | int value; | |
225 | }; | |
226 | ||
227 | /* List of registers that are pre-defined: | |
228 | ||
ca0bd54f KK |
229 | Each general register has predefined names of the form: |
230 | 1. r<reg_num> which has the value <reg_num>. | |
231 | 2. r.<reg_num> which has the value <reg_num>. | |
1f7cc434 | 232 | |
1f7cc434 | 233 | |
ca0bd54f KK |
234 | Each floating point register has predefined names of the form: |
235 | 1. f<reg_num> which has the value <reg_num>. | |
236 | 2. f.<reg_num> which has the value <reg_num>. | |
237 | ||
238 | Each condition register has predefined names of the form: | |
239 | 1. cr<reg_num> which has the value <reg_num>. | |
240 | 2. cr.<reg_num> which has the value <reg_num>. | |
1f7cc434 KK |
241 | |
242 | There are individual registers as well: | |
ca0bd54f KK |
243 | sp or r.sp has the value 1 |
244 | rtoc or r.toc has the value 2 | |
245 | fpscr has the value 0 | |
246 | xer has the value 1 | |
247 | lr has the value 8 | |
248 | ctr has the value 9 | |
249 | pmr has the value 0 | |
250 | dar has the value 19 | |
251 | dsisr has the value 18 | |
252 | dec has the value 22 | |
253 | sdr1 has the value 25 | |
254 | srr0 has the value 26 | |
255 | srr1 has the value 27 | |
1f7cc434 KK |
256 | |
257 | The table is sorted. Suitable for searching by a binary search. */ | |
258 | ||
259 | static const struct pd_reg pre_defined_registers[] = | |
260 | { | |
ca0bd54f KK |
261 | { "cr.0", 0 }, /* Condition Registers */ |
262 | { "cr.1", 1 }, | |
263 | { "cr.2", 2 }, | |
264 | { "cr.3", 3 }, | |
265 | { "cr.4", 4 }, | |
266 | { "cr.5", 5 }, | |
267 | { "cr.6", 6 }, | |
268 | { "cr.7", 7 }, | |
269 | ||
1f7cc434 KK |
270 | { "cr0", 0 }, |
271 | { "cr1", 1 }, | |
272 | { "cr2", 2 }, | |
273 | { "cr3", 3 }, | |
274 | { "cr4", 4 }, | |
275 | { "cr5", 5 }, | |
276 | { "cr6", 6 }, | |
277 | { "cr7", 7 }, | |
278 | ||
279 | { "ctr", 9 }, | |
280 | ||
ca0bd54f KK |
281 | { "dar", 19 }, /* Data Access Register */ |
282 | { "dec", 22 }, /* Decrementer */ | |
283 | { "dsisr", 18 }, /* Data Storage Interrupt Status Register */ | |
284 | ||
285 | { "f.0", 0 }, /* Floating point registers */ | |
286 | { "f.1", 1 }, | |
287 | { "f.10", 10 }, | |
288 | { "f.11", 11 }, | |
289 | { "f.12", 12 }, | |
290 | { "f.13", 13 }, | |
291 | { "f.14", 14 }, | |
292 | { "f.15", 15 }, | |
293 | { "f.16", 16 }, | |
294 | { "f.17", 17 }, | |
295 | { "f.18", 18 }, | |
296 | { "f.19", 19 }, | |
297 | { "f.2", 2 }, | |
298 | { "f.20", 20 }, | |
299 | { "f.21", 21 }, | |
300 | { "f.22", 22 }, | |
301 | { "f.23", 23 }, | |
302 | { "f.24", 24 }, | |
303 | { "f.25", 25 }, | |
304 | { "f.26", 26 }, | |
305 | { "f.27", 27 }, | |
306 | { "f.28", 28 }, | |
307 | { "f.29", 29 }, | |
308 | { "f.3", 3 }, | |
309 | { "f.30", 30 }, | |
310 | { "f.31", 31 }, | |
311 | { "f.4", 4 }, | |
312 | { "f.5", 5 }, | |
313 | { "f.6", 6 }, | |
314 | { "f.7", 7 }, | |
315 | { "f.8", 8 }, | |
316 | { "f.9", 9 }, | |
317 | ||
1f7cc434 KK |
318 | { "f0", 0 }, |
319 | { "f1", 1 }, | |
320 | { "f10", 10 }, | |
321 | { "f11", 11 }, | |
322 | { "f12", 12 }, | |
323 | { "f13", 13 }, | |
324 | { "f14", 14 }, | |
325 | { "f15", 15 }, | |
326 | { "f16", 16 }, | |
327 | { "f17", 17 }, | |
328 | { "f18", 18 }, | |
329 | { "f19", 19 }, | |
330 | { "f2", 2 }, | |
331 | { "f20", 20 }, | |
332 | { "f21", 21 }, | |
333 | { "f22", 22 }, | |
334 | { "f23", 23 }, | |
335 | { "f24", 24 }, | |
336 | { "f25", 25 }, | |
337 | { "f26", 26 }, | |
338 | { "f27", 27 }, | |
339 | { "f28", 28 }, | |
340 | { "f29", 29 }, | |
341 | { "f3", 3 }, | |
342 | { "f30", 30 }, | |
343 | { "f31", 31 }, | |
344 | { "f4", 4 }, | |
345 | { "f5", 5 }, | |
346 | { "f6", 6 }, | |
347 | { "f7", 7 }, | |
348 | { "f8", 8 }, | |
349 | { "f9", 9 }, | |
350 | ||
351 | { "fpscr", 0 }, | |
352 | ||
ca0bd54f KK |
353 | { "lr", 8 }, /* Link Register */ |
354 | ||
355 | { "pmr", 0 }, | |
356 | ||
357 | { "r.0", 0 }, /* General Purpose Registers */ | |
358 | { "r.1", 1 }, | |
359 | { "r.10", 10 }, | |
360 | { "r.11", 11 }, | |
361 | { "r.12", 12 }, | |
362 | { "r.13", 13 }, | |
363 | { "r.14", 14 }, | |
364 | { "r.15", 15 }, | |
365 | { "r.16", 16 }, | |
366 | { "r.17", 17 }, | |
367 | { "r.18", 18 }, | |
368 | { "r.19", 19 }, | |
369 | { "r.2", 2 }, | |
370 | { "r.20", 20 }, | |
371 | { "r.21", 21 }, | |
372 | { "r.22", 22 }, | |
373 | { "r.23", 23 }, | |
374 | { "r.24", 24 }, | |
375 | { "r.25", 25 }, | |
376 | { "r.26", 26 }, | |
377 | { "r.27", 27 }, | |
378 | { "r.28", 28 }, | |
379 | { "r.29", 29 }, | |
380 | { "r.3", 3 }, | |
381 | { "r.30", 30 }, | |
382 | { "r.31", 31 }, | |
383 | { "r.4", 4 }, | |
384 | { "r.5", 5 }, | |
385 | { "r.6", 6 }, | |
386 | { "r.7", 7 }, | |
387 | { "r.8", 8 }, | |
388 | { "r.9", 9 }, | |
389 | ||
390 | { "r.sp", 1 }, /* Stack Pointer */ | |
391 | ||
392 | { "r.toc", 2 }, /* Pointer to the table of contents */ | |
393 | ||
394 | { "r0", 0 }, /* More general purpose registers */ | |
1f7cc434 KK |
395 | { "r1", 1 }, |
396 | { "r10", 10 }, | |
397 | { "r11", 11 }, | |
398 | { "r12", 12 }, | |
399 | { "r13", 13 }, | |
400 | { "r14", 14 }, | |
401 | { "r15", 15 }, | |
402 | { "r16", 16 }, | |
403 | { "r17", 17 }, | |
404 | { "r18", 18 }, | |
405 | { "r19", 19 }, | |
406 | { "r2", 2 }, | |
407 | { "r20", 20 }, | |
408 | { "r21", 21 }, | |
409 | { "r22", 22 }, | |
410 | { "r23", 23 }, | |
411 | { "r24", 24 }, | |
412 | { "r25", 25 }, | |
413 | { "r26", 26 }, | |
414 | { "r27", 27 }, | |
415 | { "r28", 28 }, | |
416 | { "r29", 29 }, | |
417 | { "r3", 3 }, | |
418 | { "r30", 30 }, | |
419 | { "r31", 31 }, | |
420 | { "r4", 4 }, | |
421 | { "r5", 5 }, | |
422 | { "r6", 6 }, | |
423 | { "r7", 7 }, | |
424 | { "r8", 8 }, | |
425 | { "r9", 9 }, | |
426 | ||
ca0bd54f KK |
427 | { "rtoc", 2 }, /* Table of contents */ |
428 | ||
429 | { "sdr1", 25 }, /* Storage Description Register 1 */ | |
1f7cc434 KK |
430 | |
431 | { "sp", 1 }, | |
432 | ||
ca0bd54f KK |
433 | { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */ |
434 | { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */ | |
435 | ||
1f7cc434 KK |
436 | { "xer", 1 }, |
437 | ||
438 | }; | |
439 | ||
440 | #define REG_NAME_CNT (sizeof(pre_defined_registers) / sizeof(struct pd_reg)) | |
441 | ||
442 | /* Given NAME, find the register number associated with that name, return | |
443 | the integer value associated with the given name or -1 on failure. */ | |
444 | ||
f8a011cf MM |
445 | static int reg_name_search |
446 | PARAMS ((const struct pd_reg *, int, const char * name)); | |
1f7cc434 KK |
447 | |
448 | static int | |
f8a011cf MM |
449 | reg_name_search (regs, regcount, name) |
450 | const struct pd_reg *regs; | |
451 | int regcount; | |
452 | const char *name; | |
1f7cc434 KK |
453 | { |
454 | int middle, low, high; | |
455 | int cmp; | |
456 | ||
457 | low = 0; | |
f8a011cf | 458 | high = regcount - 1; |
1f7cc434 KK |
459 | |
460 | do | |
461 | { | |
462 | middle = (low + high) / 2; | |
f8a011cf | 463 | cmp = strcasecmp (name, regs[middle].name); |
1f7cc434 KK |
464 | if (cmp < 0) |
465 | high = middle - 1; | |
466 | else if (cmp > 0) | |
467 | low = middle + 1; | |
468 | else | |
f8a011cf | 469 | return regs[middle].value; |
1f7cc434 KK |
470 | } |
471 | while (low <= high); | |
472 | ||
473 | return -1; | |
474 | } | |
475 | ||
159e6ef8 MM |
476 | /* |
477 | * Summary of register_name(). | |
478 | * | |
479 | * in: Input_line_pointer points to 1st char of operand. | |
480 | * | |
481 | * out: A expressionS. | |
482 | * The operand may have been a register: in this case, X_op == O_register, | |
483 | * X_add_number is set to the register number, and truth is returned. | |
484 | * Input_line_pointer->(next non-blank) char after operand, or is in its | |
485 | * original state. | |
486 | */ | |
487 | ||
488 | static boolean | |
489 | register_name (expressionP) | |
490 | expressionS *expressionP; | |
491 | { | |
492 | int reg_number; | |
493 | char *name; | |
494 | char *start; | |
495 | char c; | |
496 | ||
497 | /* Find the spelling of the operand */ | |
498 | start = name = input_line_pointer; | |
499 | if (name[0] == '%' && isalpha (name[1])) | |
500 | name = ++input_line_pointer; | |
501 | ||
502 | else if (!reg_names_p || !isalpha (name[0])) | |
503 | return false; | |
504 | ||
505 | c = get_symbol_end (); | |
f8a011cf | 506 | reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name); |
159e6ef8 MM |
507 | |
508 | /* look to see if it's in the register table */ | |
509 | if (reg_number >= 0) | |
510 | { | |
511 | expressionP->X_op = O_register; | |
512 | expressionP->X_add_number = reg_number; | |
513 | ||
514 | /* make the rest nice */ | |
515 | expressionP->X_add_symbol = NULL; | |
516 | expressionP->X_op_symbol = NULL; | |
517 | *input_line_pointer = c; /* put back the delimiting char */ | |
518 | return true; | |
519 | } | |
520 | else | |
521 | { | |
522 | /* reset the line as if we had not done anything */ | |
523 | *input_line_pointer = c; /* put back the delimiting char */ | |
524 | input_line_pointer = start; /* reset input_line pointer */ | |
525 | return false; | |
526 | } | |
527 | } | |
f8a011cf MM |
528 | \f |
529 | /* This function is called for each symbol seen in an expression. It | |
530 | handles the special parsing which PowerPC assemblers are supposed | |
531 | to use for condition codes. */ | |
532 | ||
533 | /* Whether to do the special parsing. */ | |
534 | static boolean cr_operand; | |
535 | ||
536 | /* Names to recognize in a condition code. This table is sorted. */ | |
537 | static const struct pd_reg cr_names[] = | |
538 | { | |
539 | { "cr0", 0 }, | |
540 | { "cr1", 1 }, | |
541 | { "cr2", 2 }, | |
542 | { "cr3", 3 }, | |
543 | { "cr4", 4 }, | |
544 | { "cr5", 5 }, | |
545 | { "cr6", 6 }, | |
546 | { "cr7", 7 }, | |
547 | { "eq", 2 }, | |
548 | { "gt", 1 }, | |
549 | { "lt", 0 }, | |
550 | { "so", 3 }, | |
551 | { "un", 3 } | |
552 | }; | |
553 | ||
554 | /* Parsing function. This returns non-zero if it recognized an | |
555 | expression. */ | |
556 | ||
557 | int | |
558 | ppc_parse_name (name, expr) | |
559 | const char *name; | |
560 | expressionS *expr; | |
561 | { | |
562 | int val; | |
563 | ||
564 | if (! cr_operand) | |
565 | return 0; | |
1f7cc434 | 566 | |
f8a011cf MM |
567 | val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0], |
568 | name); | |
569 | if (val < 0) | |
570 | return 0; | |
571 | ||
572 | expr->X_op = O_constant; | |
573 | expr->X_add_number = val; | |
574 | ||
575 | return 1; | |
576 | } | |
882bdc69 ILT |
577 | \f |
578 | /* Local variables. */ | |
579 | ||
1e147242 ILT |
580 | /* The type of processor we are assembling for. This is one or more |
581 | of the PPC_OPCODE flags defined in opcode/ppc.h. */ | |
882bdc69 ILT |
582 | static int ppc_cpu = 0; |
583 | ||
1e147242 ILT |
584 | /* The size of the processor we are assembling for. This is either |
585 | PPC_OPCODE_32 or PPC_OPCODE_64. */ | |
586 | static int ppc_size = PPC_OPCODE_32; | |
587 | ||
882bdc69 ILT |
588 | /* Opcode hash table. */ |
589 | static struct hash_control *ppc_hash; | |
590 | ||
591 | /* Macro hash table. */ | |
592 | static struct hash_control *ppc_macro_hash; | |
593 | ||
3f81f3cf | 594 | #ifdef OBJ_ELF |
8b1e9f12 MM |
595 | /* What type of shared library support to use */ |
596 | static enum { SHLIB_NONE, SHLIB_PIC, SHILB_MRELOCATABLE } shlib = SHLIB_NONE; | |
2c474754 MM |
597 | |
598 | /* Flags to set in the elf header */ | |
599 | static flagword ppc_flags = 0; | |
b61802e7 MM |
600 | |
601 | /* Whether this is Solaris or not. */ | |
602 | #ifdef TARGET_SOLARIS_COMMENT | |
603 | #define SOLARIS_P true | |
604 | #else | |
605 | #define SOLARIS_P false | |
606 | #endif | |
607 | ||
608 | static boolean msolaris = SOLARIS_P; | |
3f81f3cf MM |
609 | #endif |
610 | ||
18c9057f | 611 | #ifdef OBJ_XCOFF |
882bdc69 ILT |
612 | |
613 | /* The RS/6000 assembler uses the .csect pseudo-op to generate code | |
614 | using a bunch of different sections. These assembler sections, | |
615 | however, are all encompassed within the .text or .data sections of | |
616 | the final output file. We handle this by using different | |
617 | subsegments within these main segments. */ | |
618 | ||
619 | /* Next subsegment to allocate within the .text segment. */ | |
620 | static subsegT ppc_text_subsegment = 2; | |
621 | ||
622 | /* Linked list of csects in the text section. */ | |
623 | static symbolS *ppc_text_csects; | |
624 | ||
625 | /* Next subsegment to allocate within the .data segment. */ | |
626 | static subsegT ppc_data_subsegment = 2; | |
627 | ||
628 | /* Linked list of csects in the data section. */ | |
629 | static symbolS *ppc_data_csects; | |
630 | ||
631 | /* The current csect. */ | |
632 | static symbolS *ppc_current_csect; | |
633 | ||
634 | /* The RS/6000 assembler uses a TOC which holds addresses of functions | |
635 | and variables. Symbols are put in the TOC with the .tc pseudo-op. | |
636 | A special relocation is used when accessing TOC entries. We handle | |
637 | the TOC as a subsegment within the .data segment. We set it up if | |
638 | we see a .toc pseudo-op, and save the csect symbol here. */ | |
639 | static symbolS *ppc_toc_csect; | |
640 | ||
641 | /* The first frag in the TOC subsegment. */ | |
642 | static fragS *ppc_toc_frag; | |
643 | ||
644 | /* The first frag in the first subsegment after the TOC in the .data | |
645 | segment. NULL if there are no subsegments after the TOC. */ | |
646 | static fragS *ppc_after_toc_frag; | |
647 | ||
1eeb357e ILT |
648 | /* The current static block. */ |
649 | static symbolS *ppc_current_block; | |
650 | ||
882bdc69 ILT |
651 | /* The COFF debugging section; set by md_begin. This is not the |
652 | .debug section, but is instead the secret BFD section which will | |
653 | cause BFD to set the section number of a symbol to N_DEBUG. */ | |
654 | static asection *ppc_coff_debug_section; | |
655 | ||
18c9057f ILT |
656 | #endif /* OBJ_XCOFF */ |
657 | ||
658 | #ifdef TE_PE | |
659 | ||
ca0bd54f KK |
660 | /* Various sections that we need for PE coff support. */ |
661 | static segT ydata_section; | |
662 | static segT pdata_section; | |
663 | static segT reldata_section; | |
664 | static segT rdata_section; | |
665 | static segT tocdata_section; | |
18c9057f | 666 | |
ca0bd54f | 667 | /* The current section and the previous section. See ppc_previous. */ |
18c9057f ILT |
668 | static segT ppc_previous_section; |
669 | static segT ppc_current_section; | |
670 | ||
671 | #endif /* TE_PE */ | |
da8fa3ba MM |
672 | |
673 | #ifdef OBJ_ELF | |
674 | symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */ | |
675 | #endif /* OBJ_ELF */ | |
676 | ||
4a6b2f8b MM |
677 | #ifndef WORKING_DOT_WORD |
678 | const int md_short_jump_size = 4; | |
679 | const int md_long_jump_size = 4; | |
680 | #endif | |
882bdc69 | 681 | \f |
1eeb357e | 682 | #ifdef OBJ_ELF |
10c9620d | 683 | CONST char *md_shortopts = "b:l:usm:K:VQ:"; |
1eeb357e ILT |
684 | #else |
685 | CONST char *md_shortopts = "um:"; | |
686 | #endif | |
687 | struct option md_longopts[] = { | |
688 | {NULL, no_argument, NULL, 0} | |
689 | }; | |
690 | size_t md_longopts_size = sizeof(md_longopts); | |
882bdc69 ILT |
691 | |
692 | int | |
1eeb357e ILT |
693 | md_parse_option (c, arg) |
694 | int c; | |
695 | char *arg; | |
882bdc69 | 696 | { |
1eeb357e | 697 | switch (c) |
882bdc69 | 698 | { |
1eeb357e ILT |
699 | case 'u': |
700 | /* -u means that any undefined symbols should be treated as | |
701 | external, which is the default for gas anyhow. */ | |
702 | break; | |
882bdc69 | 703 | |
47d12b2c MM |
704 | #ifdef OBJ_ELF |
705 | case 'l': | |
706 | /* Solaris as takes -le (presumably for little endian). For completeness | |
707 | sake, recognize -be also. */ | |
708 | if (strcmp (arg, "e") == 0) | |
709 | { | |
710 | target_big_endian = 0; | |
711 | set_target_endian = 1; | |
712 | } | |
713 | else | |
714 | return 0; | |
715 | ||
716 | break; | |
717 | ||
718 | case 'b': | |
719 | if (strcmp (arg, "e") == 0) | |
720 | { | |
721 | target_big_endian = 1; | |
722 | set_target_endian = 1; | |
723 | } | |
724 | else | |
725 | return 0; | |
726 | ||
727 | break; | |
10c9620d MM |
728 | |
729 | case 'K': | |
730 | /* Recognize -K PIC */ | |
b61802e7 | 731 | if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0) |
10c9620d | 732 | { |
8b1e9f12 | 733 | shlib = SHLIB_PIC; |
10c9620d MM |
734 | ppc_flags |= EF_PPC_RELOCATABLE_LIB; |
735 | } | |
736 | else | |
737 | return 0; | |
738 | ||
739 | break; | |
47d12b2c MM |
740 | #endif |
741 | ||
1eeb357e ILT |
742 | case 'm': |
743 | /* -mpwrx and -mpwr2 mean to assemble for the IBM POWER/2 | |
744 | (RIOS2). */ | |
745 | if (strcmp (arg, "pwrx") == 0 || strcmp (arg, "pwr2") == 0) | |
746 | ppc_cpu = PPC_OPCODE_POWER | PPC_OPCODE_POWER2; | |
747 | /* -mpwr means to assemble for the IBM POWER (RIOS1). */ | |
748 | else if (strcmp (arg, "pwr") == 0) | |
749 | ppc_cpu = PPC_OPCODE_POWER; | |
96fe71e1 MM |
750 | /* -m601 means to assemble for the Motorola PowerPC 601, which includes |
751 | instructions that are holdovers from the Power. */ | |
1eeb357e ILT |
752 | else if (strcmp (arg, "601") == 0) |
753 | ppc_cpu = PPC_OPCODE_PPC | PPC_OPCODE_601; | |
754 | /* -mppc, -mppc32, -m603, and -m604 mean to assemble for the | |
755 | Motorola PowerPC 603/604. */ | |
756 | else if (strcmp (arg, "ppc") == 0 | |
757 | || strcmp (arg, "ppc32") == 0 | |
9b0da28b | 758 | || strcmp (arg, "403") == 0 |
1eeb357e ILT |
759 | || strcmp (arg, "603") == 0 |
760 | || strcmp (arg, "604") == 0) | |
761 | ppc_cpu = PPC_OPCODE_PPC; | |
762 | /* -mppc64 and -m620 mean to assemble for the 64-bit PowerPC | |
763 | 620. */ | |
764 | else if (strcmp (arg, "ppc64") == 0 || strcmp (arg, "620") == 0) | |
765 | { | |
766 | ppc_cpu = PPC_OPCODE_PPC; | |
767 | ppc_size = PPC_OPCODE_64; | |
768 | } | |
4c2935f4 | 769 | /* -mcom means assemble for the common intersection between Power |
27ec941d | 770 | and PowerPC. At present, we just allow the union, rather |
958e0907 | 771 | than the intersection. */ |
4c2935f4 | 772 | else if (strcmp (arg, "com") == 0) |
96fe71e1 | 773 | ppc_cpu = PPC_OPCODE_COMMON; |
1eeb357e ILT |
774 | /* -many means to assemble for any architecture (PWR/PWRX/PPC). */ |
775 | else if (strcmp (arg, "any") == 0) | |
96fe71e1 | 776 | ppc_cpu = PPC_OPCODE_ANY; |
99146659 | 777 | |
159e6ef8 MM |
778 | else if (strcmp (arg, "regnames") == 0) |
779 | reg_names_p = true; | |
780 | ||
781 | else if (strcmp (arg, "no-regnames") == 0) | |
782 | reg_names_p = false; | |
783 | ||
3f81f3cf | 784 | #ifdef OBJ_ELF |
2c474754 | 785 | /* -mrelocatable/-mrelocatable-lib -- warn about initializations that require relocation */ |
3f81f3cf | 786 | else if (strcmp (arg, "relocatable") == 0) |
2c474754 | 787 | { |
8b1e9f12 | 788 | shlib = SHILB_MRELOCATABLE; |
2c474754 MM |
789 | ppc_flags |= EF_PPC_RELOCATABLE; |
790 | } | |
791 | ||
792 | else if (strcmp (arg, "relocatable-lib") == 0) | |
793 | { | |
8b1e9f12 | 794 | shlib = SHILB_MRELOCATABLE; |
4493af66 | 795 | ppc_flags |= EF_PPC_RELOCATABLE_LIB; |
2c474754 MM |
796 | } |
797 | ||
798 | /* -memb, set embedded bit */ | |
799 | else if (strcmp (arg, "emb") == 0) | |
800 | ppc_flags |= EF_PPC_EMB; | |
99146659 MM |
801 | |
802 | /* -mlittle/-mbig set the endianess */ | |
803 | else if (strcmp (arg, "little") == 0 || strcmp (arg, "little-endian") == 0) | |
2c474754 MM |
804 | { |
805 | target_big_endian = 0; | |
806 | set_target_endian = 1; | |
807 | } | |
99146659 MM |
808 | |
809 | else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0) | |
2c474754 MM |
810 | { |
811 | target_big_endian = 1; | |
812 | set_target_endian = 1; | |
813 | } | |
b61802e7 MM |
814 | |
815 | else if (strcmp (arg, "solaris") == 0) | |
816 | { | |
817 | msolaris = true; | |
818 | ppc_comment_chars = ppc_solaris_comment_chars; | |
819 | } | |
820 | ||
821 | else if (strcmp (arg, "no-solaris") == 0) | |
822 | { | |
823 | msolaris = false; | |
824 | ppc_comment_chars = ppc_eabi_comment_chars; | |
825 | } | |
3f81f3cf | 826 | #endif |
1eeb357e ILT |
827 | else |
828 | { | |
99146659 | 829 | as_bad ("invalid switch -m%s", arg); |
1eeb357e ILT |
830 | return 0; |
831 | } | |
832 | break; | |
882bdc69 | 833 | |
1eeb357e ILT |
834 | #ifdef OBJ_ELF |
835 | /* -V: SVR4 argument to print version ID. */ | |
836 | case 'V': | |
837 | print_version_id (); | |
838 | break; | |
882bdc69 | 839 | |
1eeb357e ILT |
840 | /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section |
841 | should be emitted or not. FIXME: Not implemented. */ | |
842 | case 'Q': | |
843 | break; | |
47d12b2c MM |
844 | |
845 | /* Solaris takes -s to specify that .stabs go in a .stabs section, | |
846 | rather than .stabs.excl, which is ignored by the linker. | |
847 | FIXME: Not implemented. */ | |
848 | case 's': | |
849 | if (arg) | |
850 | return 0; | |
851 | ||
852 | break; | |
1eeb357e | 853 | #endif |
882bdc69 | 854 | |
1eeb357e ILT |
855 | default: |
856 | return 0; | |
882bdc69 ILT |
857 | } |
858 | ||
1eeb357e ILT |
859 | return 1; |
860 | } | |
882bdc69 | 861 | |
1eeb357e ILT |
862 | void |
863 | md_show_usage (stream) | |
864 | FILE *stream; | |
865 | { | |
866 | fprintf(stream, "\ | |
867 | PowerPC options:\n\ | |
868 | -u ignored\n\ | |
99146659 | 869 | -mpwrx, -mpwr2 generate code for IBM POWER/2 (RIOS2)\n\ |
1eeb357e ILT |
870 | -mpwr generate code for IBM POWER (RIOS1)\n\ |
871 | -m601 generate code for Motorola PowerPC 601\n\ | |
9b0da28b | 872 | -mppc, -mppc32, -m403, -m603, -m604\n\ |
4a6b2f8b | 873 | generate code for Motorola PowerPC 603/604\n\ |
99146659 | 874 | -mppc64, -m620 generate code for Motorola PowerPC 620\n\ |
df7504dc | 875 | -mcom generate code Power/PowerPC common instructions\n\ |
159e6ef8 MM |
876 | -many generate code for any architecture (PWR/PWRX/PPC)\n\ |
877 | -mregnames Allow symbolic names for registers\n\ | |
878 | -mno-regnames Do not allow symbolic names for registers\n"); | |
882bdc69 | 879 | #ifdef OBJ_ELF |
1eeb357e | 880 | fprintf(stream, "\ |
99146659 | 881 | -mrelocatable support for GCC's -mrelocatble option\n\ |
2c474754 MM |
882 | -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\ |
883 | -memb set PPC_EMB bit in ELF flags\n\ | |
99146659 | 884 | -mlittle, -mlittle-endian\n\ |
840886d8 MM |
885 | generate code for a little endian machine\n\ |
886 | -mbig, -mbig-endian generate code for a big endian machine\n\ | |
b61802e7 MM |
887 | -msolaris generate code for Solaris\n\ |
888 | -mno-solaris do not generate code for Solaris\n\ | |
1eeb357e ILT |
889 | -V print assembler version number\n\ |
890 | -Qy, -Qn ignored\n"); | |
882bdc69 | 891 | #endif |
882bdc69 | 892 | } |
1eeb357e | 893 | \f |
882bdc69 ILT |
894 | /* Set ppc_cpu if it is not already set. */ |
895 | ||
896 | static void | |
897 | ppc_set_cpu () | |
898 | { | |
e30c0076 | 899 | const char *default_os = TARGET_OS; |
882bdc69 ILT |
900 | const char *default_cpu = TARGET_CPU; |
901 | ||
902 | if (ppc_cpu == 0) | |
903 | { | |
e30c0076 MM |
904 | if (strncmp (default_os, "aix", 3) == 0 |
905 | && default_os[3] >= '4' && default_os[3] <= '9') | |
906 | ppc_cpu = PPC_OPCODE_COMMON; | |
907 | else if (strncmp (default_os, "aix3", 4) == 0) | |
908 | ppc_cpu = PPC_OPCODE_POWER; | |
909 | else if (strcmp (default_cpu, "rs6000") == 0) | |
882bdc69 | 910 | ppc_cpu = PPC_OPCODE_POWER; |
99146659 MM |
911 | else if (strcmp (default_cpu, "powerpc") == 0 |
912 | || strcmp (default_cpu, "powerpcle") == 0) | |
882bdc69 ILT |
913 | ppc_cpu = PPC_OPCODE_PPC; |
914 | else | |
e30c0076 | 915 | as_fatal ("Unknown default cpu = %s, os = %s", default_cpu, default_os); |
882bdc69 ILT |
916 | } |
917 | } | |
918 | ||
919 | /* Figure out the BFD architecture to use. */ | |
920 | ||
921 | enum bfd_architecture | |
922 | ppc_arch () | |
923 | { | |
96fe71e1 | 924 | const char *default_cpu = TARGET_CPU; |
882bdc69 ILT |
925 | ppc_set_cpu (); |
926 | ||
1e147242 | 927 | if ((ppc_cpu & PPC_OPCODE_PPC) != 0) |
882bdc69 | 928 | return bfd_arch_powerpc; |
1e147242 ILT |
929 | else if ((ppc_cpu & PPC_OPCODE_POWER) != 0) |
930 | return bfd_arch_rs6000; | |
96fe71e1 | 931 | else if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0) |
18c9057f | 932 | { |
96fe71e1 MM |
933 | if (strcmp (default_cpu, "rs6000") == 0) |
934 | return bfd_arch_rs6000; | |
935 | else if (strcmp (default_cpu, "powerpc") == 0 | |
936 | || strcmp (default_cpu, "powerpcle") == 0) | |
937 | return bfd_arch_powerpc; | |
18c9057f | 938 | } |
96fe71e1 MM |
939 | |
940 | as_fatal ("Neither Power nor PowerPC opcodes were selected."); | |
941 | return bfd_arch_unknown; | |
882bdc69 ILT |
942 | } |
943 | ||
944 | /* This function is called when the assembler starts up. It is called | |
945 | after the options have been parsed and the output file has been | |
946 | opened. */ | |
947 | ||
948 | void | |
949 | md_begin () | |
950 | { | |
951 | register const struct powerpc_opcode *op; | |
952 | const struct powerpc_opcode *op_end; | |
953 | const struct powerpc_macro *macro; | |
954 | const struct powerpc_macro *macro_end; | |
96fe71e1 | 955 | boolean dup_insn = false; |
882bdc69 ILT |
956 | |
957 | ppc_set_cpu (); | |
958 | ||
ce9a2805 | 959 | #ifdef OBJ_ELF |
2c474754 | 960 | /* Set the ELF flags if desired. */ |
b61802e7 | 961 | if (ppc_flags && !msolaris) |
2c474754 | 962 | bfd_set_private_flags (stdoutput, ppc_flags); |
ce9a2805 MM |
963 | #endif |
964 | ||
882bdc69 ILT |
965 | /* Insert the opcodes into a hash table. */ |
966 | ppc_hash = hash_new (); | |
967 | ||
968 | op_end = powerpc_opcodes + powerpc_num_opcodes; | |
969 | for (op = powerpc_opcodes; op < op_end; op++) | |
970 | { | |
971 | know ((op->opcode & op->mask) == op->opcode); | |
972 | ||
1e147242 ILT |
973 | if ((op->flags & ppc_cpu) != 0 |
974 | && ((op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == 0 | |
958e0907 | 975 | || (op->flags & (PPC_OPCODE_32 | PPC_OPCODE_64)) == ppc_size)) |
882bdc69 ILT |
976 | { |
977 | const char *retval; | |
978 | ||
979 | retval = hash_insert (ppc_hash, op->name, (PTR) op); | |
980 | if (retval != (const char *) NULL) | |
1eeb357e | 981 | { |
96fe71e1 MM |
982 | /* Ignore Power duplicates for -m601 */ |
983 | if ((ppc_cpu & PPC_OPCODE_601) != 0 | |
984 | && (op->flags & PPC_OPCODE_POWER) != 0) | |
985 | continue; | |
986 | ||
987 | as_bad ("Internal assembler error for instruction %s", op->name); | |
988 | dup_insn = true; | |
1eeb357e | 989 | } |
882bdc69 ILT |
990 | } |
991 | } | |
992 | ||
993 | /* Insert the macros into a hash table. */ | |
994 | ppc_macro_hash = hash_new (); | |
995 | ||
996 | macro_end = powerpc_macros + powerpc_num_macros; | |
997 | for (macro = powerpc_macros; macro < macro_end; macro++) | |
998 | { | |
999 | if ((macro->flags & ppc_cpu) != 0) | |
1000 | { | |
1001 | const char *retval; | |
1002 | ||
1003 | retval = hash_insert (ppc_macro_hash, macro->name, (PTR) macro); | |
1004 | if (retval != (const char *) NULL) | |
96fe71e1 MM |
1005 | { |
1006 | as_bad ("Internal assembler error for macro %s", macro->name); | |
1007 | dup_insn = true; | |
1008 | } | |
882bdc69 ILT |
1009 | } |
1010 | } | |
1011 | ||
96fe71e1 MM |
1012 | if (dup_insn) |
1013 | abort (); | |
1014 | ||
2c474754 MM |
1015 | /* Tell the main code what the endianness is if it is not overidden by the user. */ |
1016 | if (!set_target_endian) | |
1017 | { | |
1018 | set_target_endian = 1; | |
1019 | target_big_endian = PPC_BIG_ENDIAN; | |
1020 | } | |
882bdc69 | 1021 | |
18c9057f | 1022 | #ifdef OBJ_XCOFF |
882bdc69 ILT |
1023 | ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG); |
1024 | ||
1025 | /* Create dummy symbols to serve as initial csects. This forces the | |
1026 | text csects to precede the data csects. These symbols will not | |
1027 | be output. */ | |
1028 | ppc_text_csects = symbol_make ("dummy\001"); | |
1029 | ppc_text_csects->sy_tc.within = ppc_text_csects; | |
1030 | ppc_data_csects = symbol_make ("dummy\001"); | |
1031 | ppc_data_csects->sy_tc.within = ppc_data_csects; | |
1032 | #endif | |
1f7cc434 KK |
1033 | |
1034 | #ifdef TE_PE | |
1035 | ||
1f7cc434 KK |
1036 | ppc_current_section = text_section; |
1037 | ppc_previous_section = 0; | |
1038 | ||
1039 | #endif | |
882bdc69 ILT |
1040 | } |
1041 | ||
1042 | /* Insert an operand value into an instruction. */ | |
1043 | ||
1044 | static unsigned long | |
1045 | ppc_insert_operand (insn, operand, val, file, line) | |
1046 | unsigned long insn; | |
1047 | const struct powerpc_operand *operand; | |
1048 | offsetT val; | |
1049 | char *file; | |
1050 | unsigned int line; | |
1051 | { | |
1052 | if (operand->bits != 32) | |
1053 | { | |
1054 | long min, max; | |
1055 | offsetT test; | |
1056 | ||
1eeb357e | 1057 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) |
882bdc69 | 1058 | { |
1eeb357e ILT |
1059 | if ((operand->flags & PPC_OPERAND_SIGNOPT) != 0 |
1060 | && ppc_size == PPC_OPCODE_32) | |
1061 | max = (1 << operand->bits) - 1; | |
1062 | else | |
1063 | max = (1 << (operand->bits - 1)) - 1; | |
882bdc69 ILT |
1064 | min = - (1 << (operand->bits - 1)); |
1065 | } | |
1066 | else | |
1067 | { | |
1068 | max = (1 << operand->bits) - 1; | |
1069 | min = 0; | |
1070 | } | |
1071 | ||
1072 | if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0) | |
1073 | test = - val; | |
1074 | else | |
1075 | test = val; | |
1076 | ||
1077 | if (test < (offsetT) min || test > (offsetT) max) | |
1078 | { | |
1079 | const char *err = | |
1080 | "operand out of range (%s not between %ld and %ld)"; | |
1081 | char buf[100]; | |
1082 | ||
1083 | sprint_value (buf, test); | |
1084 | if (file == (char *) NULL) | |
f8a011cf | 1085 | as_bad (err, buf, min, max); |
882bdc69 | 1086 | else |
f8a011cf | 1087 | as_bad_where (file, line, err, buf, min, max); |
882bdc69 ILT |
1088 | } |
1089 | } | |
1090 | ||
1091 | if (operand->insert) | |
1092 | { | |
1093 | const char *errmsg; | |
1094 | ||
1095 | errmsg = NULL; | |
1096 | insn = (*operand->insert) (insn, (long) val, &errmsg); | |
1097 | if (errmsg != (const char *) NULL) | |
f8a011cf | 1098 | as_bad (errmsg); |
882bdc69 ILT |
1099 | } |
1100 | else | |
1101 | insn |= (((long) val & ((1 << operand->bits) - 1)) | |
1102 | << operand->shift); | |
1103 | ||
1104 | return insn; | |
1105 | } | |
1106 | ||
996e146f | 1107 | \f |
4a6b2f8b MM |
1108 | #ifdef OBJ_ELF |
1109 | /* Parse @got, etc. and return the desired relocation. */ | |
1110 | static bfd_reloc_code_real_type | |
8b1e9f12 | 1111 | ppc_elf_suffix (str_p, exp_p) |
4a6b2f8b | 1112 | char **str_p; |
8b1e9f12 | 1113 | expressionS *exp_p; |
4a6b2f8b | 1114 | { |
25b1cdd0 MM |
1115 | struct map_bfd { |
1116 | char *string; | |
1117 | int length; | |
1118 | bfd_reloc_code_real_type reloc; | |
1119 | }; | |
4a6b2f8b | 1120 | |
4ecbc1ef | 1121 | char ident[20]; |
25b1cdd0 | 1122 | char *str = *str_p; |
4ecbc1ef | 1123 | char *str2; |
25b1cdd0 | 1124 | int ch; |
4ecbc1ef | 1125 | int len; |
25b1cdd0 MM |
1126 | struct map_bfd *ptr; |
1127 | ||
65c91be5 MM |
1128 | #define MAP(str,reloc) { str, sizeof(str)-1, reloc } |
1129 | ||
25b1cdd0 | 1130 | static struct map_bfd mapping[] = { |
65c91be5 MM |
1131 | MAP ("l", BFD_RELOC_LO16), |
1132 | MAP ("h", BFD_RELOC_HI16), | |
1133 | MAP ("ha", BFD_RELOC_HI16_S), | |
1134 | MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN), | |
1135 | MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN), | |
f99d287b | 1136 | MAP ("got", BFD_RELOC_16_GOTOFF), |
65c91be5 MM |
1137 | MAP ("got@l", BFD_RELOC_LO16_GOTOFF), |
1138 | MAP ("got@h", BFD_RELOC_HI16_GOTOFF), | |
1139 | MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF), | |
1140 | MAP ("fixup", BFD_RELOC_CTOR), /* warnings with -mrelocatable */ | |
fbd929fd | 1141 | MAP ("plt", BFD_RELOC_24_PLT_PCREL), |
65c91be5 MM |
1142 | MAP ("pltrel24", BFD_RELOC_24_PLT_PCREL), |
1143 | MAP ("copy", BFD_RELOC_PPC_COPY), | |
1144 | MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT), | |
1145 | MAP ("local24pc", BFD_RELOC_PPC_LOCAL24PC), | |
b61802e7 | 1146 | MAP ("local", BFD_RELOC_PPC_LOCAL24PC), |
65c91be5 MM |
1147 | MAP ("pltrel", BFD_RELOC_32_PLT_PCREL), |
1148 | MAP ("plt@l", BFD_RELOC_LO16_PLTOFF), | |
1149 | MAP ("plt@h", BFD_RELOC_HI16_PLTOFF), | |
1150 | MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF), | |
1151 | MAP ("sdarel", BFD_RELOC_GPREL16), | |
1152 | MAP ("sectoff", BFD_RELOC_32_BASEREL), | |
1153 | MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL), | |
1154 | MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL), | |
1155 | MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL), | |
c682be53 MM |
1156 | MAP ("naddr", BFD_RELOC_PPC_EMB_NADDR32), |
1157 | MAP ("naddr16", BFD_RELOC_PPC_EMB_NADDR16), | |
1158 | MAP ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO), | |
1159 | MAP ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI), | |
1160 | MAP ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA), | |
1161 | MAP ("sdai16", BFD_RELOC_PPC_EMB_SDAI16), | |
1162 | MAP ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL), | |
1163 | MAP ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16), | |
1164 | MAP ("sda21", BFD_RELOC_PPC_EMB_SDA21), | |
1165 | MAP ("mrkref", BFD_RELOC_PPC_EMB_MRKREF), | |
1166 | MAP ("relsect", BFD_RELOC_PPC_EMB_RELSEC16), | |
1167 | MAP ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO), | |
1168 | MAP ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI), | |
1169 | MAP ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA), | |
1170 | MAP ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD), | |
1171 | MAP ("relsda", BFD_RELOC_PPC_EMB_RELSDA), | |
f99d287b | 1172 | MAP ("xgot", BFD_RELOC_PPC_TOC16), |
65c91be5 | 1173 | |
25b1cdd0 MM |
1174 | { (char *)0, 0, BFD_RELOC_UNUSED } |
1175 | }; | |
1176 | ||
1177 | if (*str++ != '@') | |
4a6b2f8b MM |
1178 | return BFD_RELOC_UNUSED; |
1179 | ||
65c91be5 | 1180 | for (ch = *str, str2 = ident; |
996e146f ILT |
1181 | (str2 < ident + sizeof (ident) - 1 |
1182 | && (isalnum (ch) || ch == '@')); | |
65c91be5 MM |
1183 | ch = *++str) |
1184 | { | |
1185 | *str2++ = (islower (ch)) ? ch : tolower (ch); | |
1186 | } | |
4ecbc1ef MM |
1187 | |
1188 | *str2 = '\0'; | |
1189 | len = str2 - ident; | |
1190 | ||
1191 | ch = ident[0]; | |
25b1cdd0 | 1192 | for (ptr = &mapping[0]; ptr->length > 0; ptr++) |
4ecbc1ef | 1193 | if (ch == ptr->string[0] && len == ptr->length && memcmp (ident, ptr->string, ptr->length) == 0) |
25b1cdd0 | 1194 | { |
8b1e9f12 MM |
1195 | /* Now check for identifier@suffix+constant */ |
1196 | if (*str == '-' || *str == '+') | |
1197 | { | |
1198 | char *orig_line = input_line_pointer; | |
1199 | expressionS new_exp; | |
1200 | ||
1201 | input_line_pointer = str; | |
1202 | expression (&new_exp); | |
1203 | if (new_exp.X_op == O_constant) | |
1204 | { | |
1205 | exp_p->X_add_number += new_exp.X_add_number; | |
1206 | str = input_line_pointer; | |
1207 | } | |
1208 | ||
1209 | if (&input_line_pointer != str_p) | |
1210 | input_line_pointer = orig_line; | |
1211 | } | |
1212 | ||
4ecbc1ef | 1213 | *str_p = str; |
25b1cdd0 MM |
1214 | return ptr->reloc; |
1215 | } | |
4a6b2f8b MM |
1216 | |
1217 | return BFD_RELOC_UNUSED; | |
1218 | } | |
1219 | ||
3f81f3cf | 1220 | /* Like normal .long/.short/.word, except support @got, etc. */ |
4a6b2f8b MM |
1221 | /* clobbers input_line_pointer, checks */ |
1222 | /* end-of-line. */ | |
1223 | static void | |
1224 | ppc_elf_cons (nbytes) | |
1225 | register int nbytes; /* 1=.byte, 2=.word, 4=.long */ | |
1226 | { | |
1227 | expressionS exp; | |
1228 | bfd_reloc_code_real_type reloc; | |
1229 | ||
1230 | if (is_it_end_of_statement ()) | |
1231 | { | |
1232 | demand_empty_rest_of_line (); | |
1233 | return; | |
1234 | } | |
1235 | ||
1236 | do | |
1237 | { | |
1238 | expression (&exp); | |
65c91be5 | 1239 | if (exp.X_op == O_symbol |
4a6b2f8b | 1240 | && *input_line_pointer == '@' |
8b1e9f12 | 1241 | && (reloc = ppc_elf_suffix (&input_line_pointer, &exp)) != BFD_RELOC_UNUSED) |
4a6b2f8b | 1242 | { |
4a6b2f8b | 1243 | reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc); |
65c91be5 | 1244 | int size = bfd_get_reloc_size (reloc_howto); |
4a6b2f8b | 1245 | |
65c91be5 MM |
1246 | if (size > nbytes) |
1247 | as_bad ("%s relocations do not fit in %d bytes\n", reloc_howto->name, nbytes); | |
4a6b2f8b | 1248 | |
65c91be5 MM |
1249 | else |
1250 | { | |
1251 | register char *p = frag_more ((int) nbytes); | |
1252 | int offset = nbytes - size; | |
1253 | ||
1254 | fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size, &exp, 0, reloc); | |
1255 | } | |
4a6b2f8b MM |
1256 | } |
1257 | else | |
1258 | emit_expr (&exp, (unsigned int) nbytes); | |
1259 | } | |
1260 | while (*input_line_pointer++ == ','); | |
1261 | ||
1262 | input_line_pointer--; /* Put terminator back into stream. */ | |
1263 | demand_empty_rest_of_line (); | |
1264 | } | |
1265 | ||
996e146f ILT |
1266 | /* Solaris pseduo op to change to the .rodata section. */ |
1267 | static void | |
1268 | ppc_elf_rdata (xxx) | |
1269 | int xxx; | |
1270 | { | |
1271 | char *save_line = input_line_pointer; | |
1272 | static char section[] = ".rodata\n"; | |
1273 | ||
1274 | /* Just pretend this is .section .rodata */ | |
1275 | input_line_pointer = section; | |
1276 | obj_elf_section (xxx); | |
1277 | ||
1278 | input_line_pointer = save_line; | |
1279 | } | |
1280 | ||
1281 | /* Pseudo op to make file scope bss items */ | |
1282 | static void | |
1283 | ppc_elf_lcomm(xxx) | |
1284 | int xxx; | |
1285 | { | |
1286 | register char *name; | |
1287 | register char c; | |
1288 | register char *p; | |
1289 | offsetT size; | |
1290 | register symbolS *symbolP; | |
1291 | offsetT align; | |
1292 | segT old_sec; | |
1293 | int old_subsec; | |
1294 | char *pfrag; | |
1295 | int align2; | |
1296 | ||
1297 | name = input_line_pointer; | |
1298 | c = get_symbol_end (); | |
1299 | ||
1300 | /* just after name is now '\0' */ | |
1301 | p = input_line_pointer; | |
1302 | *p = c; | |
1303 | SKIP_WHITESPACE (); | |
1304 | if (*input_line_pointer != ',') | |
1305 | { | |
1306 | as_bad ("Expected comma after symbol-name: rest of line ignored."); | |
1307 | ignore_rest_of_line (); | |
1308 | return; | |
1309 | } | |
1310 | ||
1311 | input_line_pointer++; /* skip ',' */ | |
1312 | if ((size = get_absolute_expression ()) < 0) | |
1313 | { | |
1314 | as_warn (".COMMon length (%ld.) <0! Ignored.", (long) size); | |
1315 | ignore_rest_of_line (); | |
1316 | return; | |
1317 | } | |
1318 | ||
1319 | /* The third argument to .lcomm is the alignment. */ | |
1320 | if (*input_line_pointer != ',') | |
b61802e7 | 1321 | align = 8; |
996e146f ILT |
1322 | else |
1323 | { | |
1324 | ++input_line_pointer; | |
1325 | align = get_absolute_expression (); | |
1326 | if (align <= 0) | |
1327 | { | |
1328 | as_warn ("ignoring bad alignment"); | |
b61802e7 | 1329 | align = 8; |
996e146f ILT |
1330 | } |
1331 | } | |
1332 | ||
1333 | *p = 0; | |
1334 | symbolP = symbol_find_or_make (name); | |
1335 | *p = c; | |
1336 | ||
1337 | if (S_IS_DEFINED (symbolP)) | |
1338 | { | |
1339 | as_bad ("Ignoring attempt to re-define symbol `%s'.", | |
1340 | S_GET_NAME (symbolP)); | |
1341 | ignore_rest_of_line (); | |
1342 | return; | |
1343 | } | |
1344 | ||
1345 | if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size) | |
1346 | { | |
1347 | as_bad ("Length of .lcomm \"%s\" is already %ld. Not changed to %ld.", | |
1348 | S_GET_NAME (symbolP), | |
1349 | (long) S_GET_VALUE (symbolP), | |
1350 | (long) size); | |
1351 | ||
1352 | ignore_rest_of_line (); | |
1353 | return; | |
1354 | } | |
1355 | ||
1356 | /* allocate_bss: */ | |
1357 | old_sec = now_seg; | |
1358 | old_subsec = now_subseg; | |
1359 | if (align) | |
1360 | { | |
1361 | /* convert to a power of 2 alignment */ | |
1362 | for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2); | |
1363 | if (align != 1) | |
1364 | { | |
1365 | as_bad ("Common alignment not a power of 2"); | |
1366 | ignore_rest_of_line (); | |
1367 | return; | |
1368 | } | |
1369 | } | |
1370 | else | |
1371 | align2 = 0; | |
1372 | ||
1373 | record_alignment (bss_section, align2); | |
1374 | subseg_set (bss_section, 0); | |
1375 | if (align2) | |
1376 | frag_align (align2, 0); | |
1377 | if (S_GET_SEGMENT (symbolP) == bss_section) | |
1378 | symbolP->sy_frag->fr_symbol = 0; | |
1379 | symbolP->sy_frag = frag_now; | |
1380 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size, | |
1381 | (char *) 0); | |
1382 | *pfrag = 0; | |
1383 | S_SET_SIZE (symbolP, size); | |
1384 | S_SET_SEGMENT (symbolP, bss_section); | |
1385 | S_CLEAR_EXTERNAL (symbolP); | |
1386 | subseg_set (old_sec, old_subsec); | |
1387 | demand_empty_rest_of_line (); | |
1388 | } | |
1389 | ||
840886d8 MM |
1390 | /* Validate any relocations emitted for -mrelocatable, possibly adding |
1391 | fixups for word relocations in writable segments, so we can adjust | |
1392 | them at runtime. */ | |
3f81f3cf | 1393 | static void |
99146659 MM |
1394 | ppc_elf_validate_fix (fixp, seg) |
1395 | fixS *fixp; | |
1396 | segT seg; | |
3f81f3cf | 1397 | { |
8b1e9f12 MM |
1398 | if (fixp->fx_done || fixp->fx_pcrel) |
1399 | return; | |
1400 | ||
1401 | switch (shlib) | |
3f81f3cf | 1402 | { |
8b1e9f12 MM |
1403 | case SHLIB_NONE: |
1404 | case SHLIB_PIC: | |
1405 | return; | |
1406 | ||
1407 | case SHILB_MRELOCATABLE: | |
1408 | if (fixp->fx_r_type <= BFD_RELOC_UNUSED | |
1409 | && fixp->fx_r_type != BFD_RELOC_16_GOTOFF | |
1410 | && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF | |
1411 | && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF | |
1412 | && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF | |
1413 | && fixp->fx_r_type != BFD_RELOC_32_BASEREL | |
1414 | && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL | |
1415 | && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL | |
1416 | && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL | |
1417 | && strcmp (segment_name (seg), ".got2") != 0 | |
1418 | && strcmp (segment_name (seg), ".dtors") != 0 | |
1419 | && strcmp (segment_name (seg), ".ctors") != 0 | |
1420 | && strcmp (segment_name (seg), ".fixup") != 0 | |
1421 | && strcmp (segment_name (seg), ".stab") != 0 | |
1422 | && strcmp (segment_name (seg), ".gcc_except_table") != 0 | |
1423 | && strcmp (segment_name (seg), ".ex_shared") != 0) | |
840886d8 | 1424 | { |
8b1e9f12 MM |
1425 | if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0 |
1426 | || fixp->fx_r_type != BFD_RELOC_CTOR) | |
1427 | { | |
1428 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1429 | "Relocation cannot be done when using -mrelocatable"); | |
1430 | } | |
840886d8 | 1431 | } |
8b1e9f12 | 1432 | return; |
3f81f3cf MM |
1433 | } |
1434 | } | |
4a6b2f8b | 1435 | #endif /* OBJ_ELF */ |
996e146f | 1436 | \f |
cd557d83 | 1437 | #ifdef TE_PE |
ca0bd54f KK |
1438 | |
1439 | /* | |
1440 | * Summary of parse_toc_entry(). | |
1441 | * | |
1442 | * in: Input_line_pointer points to the '[' in one of: | |
1443 | * | |
1444 | * [toc] [tocv] [toc32] [toc64] | |
1445 | * | |
1446 | * Anything else is an error of one kind or another. | |
1447 | * | |
1448 | * out: | |
1449 | * return value: success or failure | |
1450 | * toc_kind: kind of toc reference | |
1451 | * input_line_pointer: | |
1452 | * success: first char after the ']' | |
1453 | * failure: unchanged | |
1454 | * | |
1455 | * settings: | |
1456 | * | |
1457 | * [toc] - rv == success, toc_kind = default_toc | |
1458 | * [tocv] - rv == success, toc_kind = data_in_toc | |
1459 | * [toc32] - rv == success, toc_kind = must_be_32 | |
1460 | * [toc64] - rv == success, toc_kind = must_be_64 | |
1461 | * | |
1462 | */ | |
1463 | ||
1464 | enum toc_size_qualifier | |
1465 | { | |
1466 | default_toc, /* The toc cell constructed should be the system default size */ | |
1467 | data_in_toc, /* This is a direct reference to a toc cell */ | |
1468 | must_be_32, /* The toc cell constructed must be 32 bits wide */ | |
1469 | must_be_64 /* The toc cell constructed must be 64 bits wide */ | |
1470 | }; | |
1471 | ||
1472 | static int | |
1473 | parse_toc_entry(toc_kind) | |
1474 | enum toc_size_qualifier *toc_kind; | |
1475 | { | |
1476 | char *start; | |
1477 | char *toc_spec; | |
1478 | char c; | |
1479 | enum toc_size_qualifier t; | |
1480 | ||
1481 | /* save the input_line_pointer */ | |
1482 | start = input_line_pointer; | |
1483 | ||
1484 | /* skip over the '[' , and whitespace */ | |
1485 | ++input_line_pointer; | |
1486 | SKIP_WHITESPACE (); | |
1487 | ||
1488 | /* find the spelling of the operand */ | |
1489 | toc_spec = input_line_pointer; | |
1490 | c = get_symbol_end (); | |
1491 | ||
1492 | if (strcmp(toc_spec, "toc") == 0) | |
1493 | { | |
1494 | t = default_toc; | |
1495 | } | |
1496 | else if (strcmp(toc_spec, "tocv") == 0) | |
1497 | { | |
1498 | t = data_in_toc; | |
1499 | } | |
1500 | else if (strcmp(toc_spec, "toc32") == 0) | |
1501 | { | |
1502 | t = must_be_32; | |
1503 | } | |
1504 | else if (strcmp(toc_spec, "toc64") == 0) | |
1505 | { | |
1506 | t = must_be_64; | |
1507 | } | |
1508 | else | |
1509 | { | |
1510 | as_bad ("syntax error: invalid toc specifier `%s'", toc_spec); | |
1511 | *input_line_pointer = c; /* put back the delimiting char */ | |
1512 | input_line_pointer = start; /* reset input_line pointer */ | |
1513 | return 0; | |
1514 | } | |
1515 | ||
1516 | /* now find the ']' */ | |
1517 | *input_line_pointer = c; /* put back the delimiting char */ | |
1518 | ||
1519 | SKIP_WHITESPACE (); /* leading whitespace could be there. */ | |
1520 | c = *input_line_pointer++; /* input_line_pointer->past char in c. */ | |
1521 | ||
1522 | if (c != ']') | |
1523 | { | |
1524 | as_bad ("syntax error: expected `]', found `%c'", c); | |
1525 | input_line_pointer = start; /* reset input_line pointer */ | |
1526 | return 0; | |
1527 | } | |
1528 | ||
1529 | *toc_kind = t; /* set return value */ | |
1530 | return 1; | |
1531 | } | |
cd557d83 | 1532 | #endif |
996e146f | 1533 | \f |
cd557d83 | 1534 | |
882bdc69 ILT |
1535 | /* We need to keep a list of fixups. We can't simply generate them as |
1536 | we go, because that would require us to first create the frag, and | |
1537 | that would screw up references to ``.''. */ | |
1538 | ||
1539 | struct ppc_fixup | |
1540 | { | |
1541 | expressionS exp; | |
1542 | int opindex; | |
4a6b2f8b | 1543 | bfd_reloc_code_real_type reloc; |
882bdc69 ILT |
1544 | }; |
1545 | ||
1546 | #define MAX_INSN_FIXUPS (5) | |
1547 | ||
1548 | /* This routine is called for each instruction to be assembled. */ | |
1549 | ||
1550 | void | |
1551 | md_assemble (str) | |
1552 | char *str; | |
1553 | { | |
1554 | char *s; | |
1555 | const struct powerpc_opcode *opcode; | |
1556 | unsigned long insn; | |
1557 | const unsigned char *opindex_ptr; | |
1558 | int skip_optional; | |
1559 | int need_paren; | |
1560 | int next_opindex; | |
1561 | struct ppc_fixup fixups[MAX_INSN_FIXUPS]; | |
1562 | int fc; | |
1563 | char *f; | |
1564 | int i; | |
18c9057f | 1565 | #ifdef OBJ_ELF |
4a6b2f8b | 1566 | bfd_reloc_code_real_type reloc; |
18c9057f | 1567 | #endif |
882bdc69 ILT |
1568 | |
1569 | /* Get the opcode. */ | |
1570 | for (s = str; *s != '\0' && ! isspace (*s); s++) | |
1571 | ; | |
1572 | if (*s != '\0') | |
1573 | *s++ = '\0'; | |
1574 | ||
1575 | /* Look up the opcode in the hash table. */ | |
1576 | opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str); | |
1577 | if (opcode == (const struct powerpc_opcode *) NULL) | |
1578 | { | |
1579 | const struct powerpc_macro *macro; | |
1580 | ||
1581 | macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str); | |
1582 | if (macro == (const struct powerpc_macro *) NULL) | |
1583 | as_bad ("Unrecognized opcode: `%s'", str); | |
1584 | else | |
1585 | ppc_macro (s, macro); | |
1586 | ||
1587 | return; | |
1588 | } | |
1589 | ||
1590 | insn = opcode->opcode; | |
1591 | ||
1592 | str = s; | |
1593 | while (isspace (*str)) | |
1594 | ++str; | |
1595 | ||
1596 | /* PowerPC operands are just expressions. The only real issue is | |
1597 | that a few operand types are optional. All cases which might use | |
1598 | an optional operand separate the operands only with commas (in | |
1599 | some cases parentheses are used, as in ``lwz 1,0(1)'' but such | |
1600 | cases never have optional operands). There is never more than | |
1601 | one optional operand for an instruction. So, before we start | |
1602 | seriously parsing the operands, we check to see if we have an | |
1603 | optional operand, and, if we do, we count the number of commas to | |
1604 | see whether the operand should be omitted. */ | |
1605 | skip_optional = 0; | |
1606 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) | |
1607 | { | |
1608 | const struct powerpc_operand *operand; | |
1609 | ||
1610 | operand = &powerpc_operands[*opindex_ptr]; | |
1611 | if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0) | |
1612 | { | |
1613 | unsigned int opcount; | |
1614 | ||
1615 | /* There is an optional operand. Count the number of | |
1616 | commas in the input line. */ | |
1617 | if (*str == '\0') | |
1618 | opcount = 0; | |
1619 | else | |
1620 | { | |
1621 | opcount = 1; | |
1622 | s = str; | |
1623 | while ((s = strchr (s, ',')) != (char *) NULL) | |
1624 | { | |
1625 | ++opcount; | |
1626 | ++s; | |
1627 | } | |
1628 | } | |
1629 | ||
1630 | /* If there are fewer operands in the line then are called | |
1631 | for by the instruction, we want to skip the optional | |
1632 | operand. */ | |
1633 | if (opcount < strlen (opcode->operands)) | |
1634 | skip_optional = 1; | |
1635 | ||
1636 | break; | |
1637 | } | |
1638 | } | |
1639 | ||
1640 | /* Gather the operands. */ | |
1641 | need_paren = 0; | |
1642 | next_opindex = 0; | |
1643 | fc = 0; | |
1644 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) | |
1645 | { | |
1646 | const struct powerpc_operand *operand; | |
1647 | const char *errmsg; | |
1648 | char *hold; | |
1649 | expressionS ex; | |
1650 | char endc; | |
1651 | ||
1652 | if (next_opindex == 0) | |
1653 | operand = &powerpc_operands[*opindex_ptr]; | |
1654 | else | |
1655 | { | |
1656 | operand = &powerpc_operands[next_opindex]; | |
1657 | next_opindex = 0; | |
1658 | } | |
1659 | ||
1660 | errmsg = NULL; | |
1661 | ||
1662 | /* If this is a fake operand, then we do not expect anything | |
1663 | from the input. */ | |
1664 | if ((operand->flags & PPC_OPERAND_FAKE) != 0) | |
1665 | { | |
1666 | insn = (*operand->insert) (insn, 0L, &errmsg); | |
1667 | if (errmsg != (const char *) NULL) | |
f8a011cf | 1668 | as_bad (errmsg); |
882bdc69 ILT |
1669 | continue; |
1670 | } | |
1671 | ||
1672 | /* If this is an optional operand, and we are skipping it, just | |
1673 | insert a zero. */ | |
1674 | if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0 | |
1675 | && skip_optional) | |
1676 | { | |
1677 | if (operand->insert) | |
1678 | { | |
1679 | insn = (*operand->insert) (insn, 0L, &errmsg); | |
1680 | if (errmsg != (const char *) NULL) | |
f8a011cf | 1681 | as_bad (errmsg); |
882bdc69 ILT |
1682 | } |
1683 | if ((operand->flags & PPC_OPERAND_NEXT) != 0) | |
1684 | next_opindex = *opindex_ptr + 1; | |
1685 | continue; | |
1686 | } | |
1687 | ||
1688 | /* Gather the operand. */ | |
1689 | hold = input_line_pointer; | |
1690 | input_line_pointer = str; | |
1f7cc434 KK |
1691 | |
1692 | #ifdef TE_PE | |
1693 | if (*input_line_pointer == '[') | |
1694 | { | |
ca0bd54f | 1695 | /* We are expecting something like the second argument here: |
1f7cc434 KK |
1696 | |
1697 | lwz r4,[toc].GS.0.static_int(rtoc) | |
ca0bd54f KK |
1698 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
1699 | The argument following the `]' must be a symbol name, and the | |
1700 | register must be the toc register: 'rtoc' or '2' | |
1f7cc434 KK |
1701 | |
1702 | The effect is to 0 as the displacement field | |
ca0bd54f KK |
1703 | in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or |
1704 | the appropriate variation) reloc against it based on the symbol. | |
1705 | The linker will build the toc, and insert the resolved toc offset. | |
1f7cc434 KK |
1706 | |
1707 | Note: | |
1708 | o The size of the toc entry is currently assumed to be | |
1709 | 32 bits. This should not be assumed to be a hard coded | |
1710 | number. | |
1711 | o In an effort to cope with a change from 32 to 64 bits, | |
1712 | there are also toc entries that are specified to be | |
1713 | either 32 or 64 bits: | |
1714 | lwz r4,[toc32].GS.0.static_int(rtoc) | |
1715 | lwz r4,[toc64].GS.0.static_int(rtoc) | |
1716 | These demand toc entries of the specified size, and the | |
1717 | instruction probably requires it. | |
1f7cc434 KK |
1718 | */ |
1719 | ||
ca0bd54f KK |
1720 | int valid_toc; |
1721 | enum toc_size_qualifier toc_kind; | |
1722 | bfd_reloc_code_real_type toc_reloc; | |
1723 | ||
1724 | /* go parse off the [tocXX] part */ | |
1725 | valid_toc = parse_toc_entry(&toc_kind); | |
1726 | ||
1727 | if (!valid_toc) | |
1728 | { | |
1729 | /* Note: message has already been issued. */ | |
1730 | /* FIXME: what sort of recovery should we do? */ | |
1731 | /* demand_rest_of_line(); return; ? */ | |
1732 | } | |
1733 | ||
1734 | /* Now get the symbol following the ']' */ | |
1f7cc434 KK |
1735 | expression(&ex); |
1736 | ||
ca0bd54f KK |
1737 | switch (toc_kind) |
1738 | { | |
1739 | case default_toc: | |
1740 | /* In this case, we may not have seen the symbol yet, since */ | |
1741 | /* it is allowed to appear on a .extern or .globl or just be */ | |
1742 | /* a label in the .data section. */ | |
1743 | toc_reloc = BFD_RELOC_PPC_TOC16; | |
1744 | break; | |
1745 | case data_in_toc: | |
1746 | /* 1. The symbol must be defined and either in the toc */ | |
1747 | /* section, or a global. */ | |
1748 | /* 2. The reloc generated must have the TOCDEFN flag set in */ | |
1749 | /* upper bit mess of the reloc type. */ | |
1750 | /* FIXME: It's a little confusing what the tocv qualifier can */ | |
1751 | /* be used for. At the very least, I've seen three */ | |
1752 | /* uses, only one of which I'm sure I can explain. */ | |
1753 | if (ex.X_op == O_symbol) | |
1754 | { | |
1755 | assert (ex.X_add_symbol != NULL); | |
1756 | if (ex.X_add_symbol->bsym->section != tocdata_section) | |
1757 | { | |
f8a011cf | 1758 | as_bad("[tocv] symbol is not a toc symbol"); |
ca0bd54f KK |
1759 | } |
1760 | } | |
1761 | ||
1762 | toc_reloc = BFD_RELOC_PPC_TOC16; | |
1763 | break; | |
1764 | case must_be_32: | |
1765 | /* FIXME: these next two specifically specify 32/64 bit toc */ | |
1766 | /* entries. We don't support them today. Is this the */ | |
1767 | /* right way to say that? */ | |
1768 | toc_reloc = BFD_RELOC_UNUSED; | |
1769 | as_bad ("Unimplemented toc32 expression modifier"); | |
1770 | break; | |
1771 | case must_be_64: | |
1772 | /* FIXME: see above */ | |
1773 | toc_reloc = BFD_RELOC_UNUSED; | |
1774 | as_bad ("Unimplemented toc64 expression modifier"); | |
1775 | break; | |
1776 | default: | |
1777 | fprintf(stderr, | |
1778 | "Unexpected return value [%d] from parse_toc_entry!\n", | |
1779 | toc_kind); | |
1780 | abort(); | |
1781 | break; | |
1782 | } | |
1783 | ||
1f7cc434 KK |
1784 | /* We need to generate a fixup for this expression. */ |
1785 | if (fc >= MAX_INSN_FIXUPS) | |
1786 | as_fatal ("too many fixups"); | |
ca0bd54f KK |
1787 | |
1788 | fixups[fc].reloc = toc_reloc; | |
1f7cc434 KK |
1789 | fixups[fc].exp = ex; |
1790 | fixups[fc].opindex = *opindex_ptr; | |
1f7cc434 KK |
1791 | ++fc; |
1792 | ||
1793 | /* Ok. We've set up the fixup for the instruction. Now make it | |
1794 | look like the constant 0 was found here */ | |
1795 | ex.X_unsigned = 1; | |
1796 | ex.X_op = O_constant; | |
1797 | ex.X_add_number = 0; | |
1798 | ex.X_add_symbol = NULL; | |
1799 | ex.X_op_symbol = NULL; | |
1800 | } | |
159e6ef8 | 1801 | |
1f7cc434 | 1802 | else |
159e6ef8 | 1803 | #endif /* TE_PE */ |
f8a011cf MM |
1804 | { |
1805 | if (! register_name (&ex)) | |
1806 | { | |
1807 | if ((operand->flags & PPC_OPERAND_CR) != 0) | |
1808 | cr_operand = true; | |
1809 | expression (&ex); | |
1810 | cr_operand = false; | |
1811 | } | |
1812 | } | |
1f7cc434 KK |
1813 | |
1814 | str = input_line_pointer; | |
1815 | input_line_pointer = hold; | |
882bdc69 ILT |
1816 | |
1817 | if (ex.X_op == O_illegal) | |
1818 | as_bad ("illegal operand"); | |
1819 | else if (ex.X_op == O_absent) | |
1820 | as_bad ("missing operand"); | |
159e6ef8 MM |
1821 | else if (ex.X_op == O_register) |
1822 | { | |
1823 | insn = ppc_insert_operand (insn, operand, ex.X_add_number, | |
1824 | (char *) NULL, 0); | |
1825 | } | |
882bdc69 | 1826 | else if (ex.X_op == O_constant) |
840886d8 MM |
1827 | { |
1828 | #ifdef OBJ_ELF | |
1829 | /* Allow @HA, @L, @H on constants. */ | |
1830 | char *orig_str = str; | |
18c9057f | 1831 | |
8b1e9f12 | 1832 | if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED) |
840886d8 MM |
1833 | switch (reloc) |
1834 | { | |
1835 | default: | |
1836 | str = orig_str; | |
1837 | break; | |
1838 | ||
1839 | case BFD_RELOC_LO16: | |
996e146f ILT |
1840 | if (ex.X_unsigned) |
1841 | ex.X_add_number &= 0xffff; | |
1842 | else | |
1843 | ex.X_add_number = (((ex.X_add_number & 0xffff) | |
1844 | ^ 0x8000) | |
1845 | - 0x8000); | |
840886d8 MM |
1846 | break; |
1847 | ||
1848 | case BFD_RELOC_HI16: | |
1849 | ex.X_add_number = (ex.X_add_number >> 16) & 0xffff; | |
1850 | break; | |
1851 | ||
1852 | case BFD_RELOC_HI16_S: | |
996e146f ILT |
1853 | ex.X_add_number = (((ex.X_add_number >> 16) & 0xffff) |
1854 | + ((ex.X_add_number >> 15) & 1)); | |
840886d8 MM |
1855 | break; |
1856 | } | |
1857 | #endif | |
1858 | insn = ppc_insert_operand (insn, operand, ex.X_add_number, | |
1859 | (char *) NULL, 0); | |
1860 | } | |
4a6b2f8b | 1861 | #ifdef OBJ_ELF |
8b1e9f12 | 1862 | else if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED) |
4a6b2f8b | 1863 | { |
65c91be5 MM |
1864 | /* For the absoulte forms of branchs, convert the PC relative form back into |
1865 | the absolute. */ | |
1866 | if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0) | |
996e146f ILT |
1867 | { |
1868 | switch (reloc) | |
1869 | { | |
1870 | case BFD_RELOC_PPC_B26: | |
1871 | reloc = BFD_RELOC_PPC_BA26; | |
1872 | break; | |
1873 | case BFD_RELOC_PPC_B16: | |
1874 | reloc = BFD_RELOC_PPC_BA16; | |
1875 | break; | |
1876 | case BFD_RELOC_PPC_B16_BRTAKEN: | |
1877 | reloc = BFD_RELOC_PPC_BA16_BRTAKEN; | |
1878 | break; | |
1879 | case BFD_RELOC_PPC_B16_BRNTAKEN: | |
1880 | reloc = BFD_RELOC_PPC_BA16_BRNTAKEN; | |
1881 | break; | |
1882 | default: | |
1883 | break; | |
1884 | } | |
1885 | } | |
65c91be5 | 1886 | |
4a6b2f8b MM |
1887 | /* We need to generate a fixup for this expression. */ |
1888 | if (fc >= MAX_INSN_FIXUPS) | |
1889 | as_fatal ("too many fixups"); | |
1890 | fixups[fc].exp = ex; | |
1891 | fixups[fc].opindex = 0; | |
1892 | fixups[fc].reloc = reloc; | |
1893 | ++fc; | |
1894 | } | |
1895 | #endif /* OBJ_ELF */ | |
1896 | ||
882bdc69 ILT |
1897 | else |
1898 | { | |
1899 | /* We need to generate a fixup for this expression. */ | |
1900 | if (fc >= MAX_INSN_FIXUPS) | |
1901 | as_fatal ("too many fixups"); | |
1902 | fixups[fc].exp = ex; | |
1903 | fixups[fc].opindex = *opindex_ptr; | |
4a6b2f8b | 1904 | fixups[fc].reloc = BFD_RELOC_UNUSED; |
882bdc69 ILT |
1905 | ++fc; |
1906 | } | |
1907 | ||
1908 | if (need_paren) | |
1909 | { | |
1910 | endc = ')'; | |
1911 | need_paren = 0; | |
1912 | } | |
1913 | else if ((operand->flags & PPC_OPERAND_PARENS) != 0) | |
1914 | { | |
1915 | endc = '('; | |
1916 | need_paren = 1; | |
1917 | } | |
1918 | else | |
1919 | endc = ','; | |
1920 | ||
1921 | /* The call to expression should have advanced str past any | |
1922 | whitespace. */ | |
1923 | if (*str != endc | |
1924 | && (endc != ',' || *str != '\0')) | |
1925 | { | |
1926 | as_bad ("syntax error; found `%c' but expected `%c'", *str, endc); | |
1927 | break; | |
1928 | } | |
1929 | ||
1930 | if (*str != '\0') | |
1931 | ++str; | |
1932 | } | |
1933 | ||
1934 | while (isspace (*str)) | |
1935 | ++str; | |
1936 | ||
1937 | if (*str != '\0') | |
1938 | as_bad ("junk at end of line: `%s'", str); | |
1939 | ||
1940 | /* Write out the instruction. */ | |
1941 | f = frag_more (4); | |
1942 | md_number_to_chars (f, insn, 4); | |
1943 | ||
1944 | /* Create any fixups. At this point we do not use a | |
99146659 MM |
1945 | bfd_reloc_code_real_type, but instead just use the |
1946 | BFD_RELOC_UNUSED plus the operand index. This lets us easily | |
1947 | handle fixups for any operand type, although that is admittedly | |
1948 | not a very exciting feature. We pick a BFD reloc type in | |
1949 | md_apply_fix. */ | |
882bdc69 ILT |
1950 | for (i = 0; i < fc; i++) |
1951 | { | |
1952 | const struct powerpc_operand *operand; | |
1953 | ||
1954 | operand = &powerpc_operands[fixups[i].opindex]; | |
4a6b2f8b MM |
1955 | if (fixups[i].reloc != BFD_RELOC_UNUSED) |
1956 | { | |
1957 | reloc_howto_type *reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc); | |
4ecbc1ef MM |
1958 | int size; |
1959 | int offset; | |
840886d8 | 1960 | fixS *fixP; |
4a6b2f8b | 1961 | |
4ecbc1ef MM |
1962 | if (!reloc_howto) |
1963 | abort (); | |
1964 | ||
1965 | size = bfd_get_reloc_size (reloc_howto); | |
1966 | offset = target_big_endian ? (4 - size) : 0; | |
1967 | ||
1968 | if (size < 1 || size > 4) | |
99146659 | 1969 | abort(); |
4a6b2f8b | 1970 | |
840886d8 | 1971 | fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, size, |
4ecbc1ef | 1972 | &fixups[i].exp, reloc_howto->pc_relative, |
840886d8 MM |
1973 | fixups[i].reloc); |
1974 | ||
1975 | /* Turn off complaints that the addend is too large for things like | |
1976 | foo+100000@ha. */ | |
1977 | switch (fixups[i].reloc) | |
1978 | { | |
159e6ef8 MM |
1979 | case BFD_RELOC_16_GOTOFF: |
1980 | case BFD_RELOC_PPC_TOC16: | |
840886d8 MM |
1981 | case BFD_RELOC_LO16: |
1982 | case BFD_RELOC_HI16: | |
1983 | case BFD_RELOC_HI16_S: | |
1984 | fixP->fx_no_overflow = 1; | |
1985 | break; | |
18c9057f ILT |
1986 | default: |
1987 | break; | |
840886d8 | 1988 | } |
4a6b2f8b MM |
1989 | } |
1990 | else | |
1991 | fix_new_exp (frag_now, f - frag_now->fr_literal, 4, | |
1992 | &fixups[i].exp, | |
1993 | (operand->flags & PPC_OPERAND_RELATIVE) != 0, | |
1994 | ((bfd_reloc_code_real_type) | |
1995 | (fixups[i].opindex + (int) BFD_RELOC_UNUSED))); | |
882bdc69 ILT |
1996 | } |
1997 | } | |
1998 | ||
4a6b2f8b MM |
1999 | #ifndef WORKING_DOT_WORD |
2000 | /* Handle long and short jumps */ | |
2001 | void | |
2002 | md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
2003 | char *ptr; | |
2004 | addressT from_addr, to_addr; | |
2005 | fragS *frag; | |
2006 | symbolS *to_symbol; | |
2007 | { | |
2008 | abort (); | |
2009 | } | |
2010 | ||
2011 | void | |
2012 | md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
2013 | char *ptr; | |
2014 | addressT from_addr, to_addr; | |
2015 | fragS *frag; | |
2016 | symbolS *to_symbol; | |
2017 | { | |
2018 | abort (); | |
2019 | } | |
2020 | #endif | |
2021 | ||
882bdc69 ILT |
2022 | /* Handle a macro. Gather all the operands, transform them as |
2023 | described by the macro, and call md_assemble recursively. All the | |
2024 | operands are separated by commas; we don't accept parentheses | |
2025 | around operands here. */ | |
2026 | ||
2027 | static void | |
2028 | ppc_macro (str, macro) | |
2029 | char *str; | |
2030 | const struct powerpc_macro *macro; | |
2031 | { | |
2032 | char *operands[10]; | |
4c2935f4 | 2033 | unsigned int count; |
882bdc69 ILT |
2034 | char *s; |
2035 | unsigned int len; | |
2036 | const char *format; | |
2037 | int arg; | |
2038 | char *send; | |
2039 | char *complete; | |
2040 | ||
2041 | /* Gather the users operands into the operands array. */ | |
2042 | count = 0; | |
2043 | s = str; | |
2044 | while (1) | |
2045 | { | |
2046 | if (count >= sizeof operands / sizeof operands[0]) | |
2047 | break; | |
2048 | operands[count++] = s; | |
2049 | s = strchr (s, ','); | |
2050 | if (s == (char *) NULL) | |
2051 | break; | |
2052 | *s++ = '\0'; | |
2053 | } | |
2054 | ||
2055 | if (count != macro->operands) | |
2056 | { | |
2057 | as_bad ("wrong number of operands"); | |
2058 | return; | |
2059 | } | |
2060 | ||
2061 | /* Work out how large the string must be (the size is unbounded | |
2062 | because it includes user input). */ | |
2063 | len = 0; | |
2064 | format = macro->format; | |
2065 | while (*format != '\0') | |
2066 | { | |
2067 | if (*format != '%') | |
2068 | { | |
2069 | ++len; | |
2070 | ++format; | |
2071 | } | |
2072 | else | |
2073 | { | |
2074 | arg = strtol (format + 1, &send, 10); | |
2075 | know (send != format && arg >= 0 && arg < count); | |
2076 | len += strlen (operands[arg]); | |
2077 | format = send; | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | /* Put the string together. */ | |
2082 | complete = s = (char *) alloca (len + 1); | |
2083 | format = macro->format; | |
2084 | while (*format != '\0') | |
2085 | { | |
2086 | if (*format != '%') | |
2087 | *s++ = *format++; | |
2088 | else | |
2089 | { | |
2090 | arg = strtol (format + 1, &send, 10); | |
2091 | strcpy (s, operands[arg]); | |
2092 | s += strlen (s); | |
2093 | format = send; | |
2094 | } | |
2095 | } | |
2096 | *s = '\0'; | |
2097 | ||
2098 | /* Assemble the constructed instruction. */ | |
2099 | md_assemble (complete); | |
2100 | } | |
f99d287b | 2101 | \f |
747b98fe | 2102 | #ifdef OBJ_ELF |
f99d287b MM |
2103 | /* For ELF, add support for SHF_EXCLUDE and SHT_ORDERED */ |
2104 | ||
2105 | int | |
2106 | ppc_section_letter (letter, ptr_msg) | |
2107 | int letter; | |
2108 | char **ptr_msg; | |
2109 | { | |
2110 | if (letter == 'e') | |
2111 | return SHF_EXCLUDE; | |
2112 | ||
2113 | *ptr_msg = "Bad .section directive: want a,w,x,e in string"; | |
2114 | return 0; | |
2115 | } | |
2116 | ||
2117 | int | |
2118 | ppc_section_word (ptr_str) | |
2119 | char **ptr_str; | |
2120 | { | |
2121 | if (strncmp (*ptr_str, "exclude", sizeof ("exclude")-1) == 0) | |
2122 | { | |
2123 | *ptr_str += sizeof ("exclude")-1; | |
2124 | return SHF_EXCLUDE; | |
2125 | } | |
2126 | ||
2127 | return 0; | |
2128 | } | |
2129 | ||
2130 | int | |
2131 | ppc_section_type (ptr_str) | |
2132 | char **ptr_str; | |
2133 | { | |
2134 | if (strncmp (*ptr_str, "ordered", sizeof ("ordered")-1) == 0) | |
2135 | { | |
2136 | *ptr_str += sizeof ("ordered")-1; | |
2137 | return SHT_ORDERED; | |
2138 | } | |
2139 | ||
2140 | return 0; | |
2141 | } | |
2142 | ||
2143 | int | |
2144 | ppc_section_flags (flags, attr, type) | |
2145 | int flags; | |
2146 | int attr; | |
2147 | int type; | |
2148 | { | |
2149 | if (type == SHT_ORDERED) | |
2150 | flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES; | |
2151 | ||
2152 | if (attr & SHF_EXCLUDE) | |
2153 | flags |= SEC_EXCLUDE; | |
2154 | ||
2155 | return flags; | |
2156 | } | |
747b98fe | 2157 | #endif /* OBJ_ELF */ |
f99d287b | 2158 | |
882bdc69 ILT |
2159 | \f |
2160 | /* Pseudo-op handling. */ | |
2161 | ||
2162 | /* The .byte pseudo-op. This is similar to the normal .byte | |
2163 | pseudo-op, but it can also take a single ASCII string. */ | |
2164 | ||
2165 | static void | |
2166 | ppc_byte (ignore) | |
2167 | int ignore; | |
2168 | { | |
2169 | if (*input_line_pointer != '\"') | |
2170 | { | |
2171 | cons (1); | |
2172 | return; | |
2173 | } | |
2174 | ||
2175 | /* Gather characters. A real double quote is doubled. Unusual | |
2176 | characters are not permitted. */ | |
2177 | ++input_line_pointer; | |
2178 | while (1) | |
2179 | { | |
2180 | char c; | |
2181 | ||
2182 | c = *input_line_pointer++; | |
2183 | ||
2184 | if (c == '\"') | |
2185 | { | |
2186 | if (*input_line_pointer != '\"') | |
2187 | break; | |
2188 | ++input_line_pointer; | |
2189 | } | |
2190 | ||
2191 | FRAG_APPEND_1_CHAR (c); | |
2192 | } | |
2193 | ||
2194 | demand_empty_rest_of_line (); | |
2195 | } | |
2196 | \f | |
18c9057f | 2197 | #ifdef OBJ_XCOFF |
882bdc69 ILT |
2198 | |
2199 | /* XCOFF specific pseudo-op handling. */ | |
2200 | ||
31751d9d ILT |
2201 | /* This is set if we are creating a .stabx symbol, since we don't want |
2202 | to handle symbol suffixes for such symbols. */ | |
2203 | static boolean ppc_stab_symbol; | |
2204 | ||
882bdc69 ILT |
2205 | /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common |
2206 | symbols in the .bss segment as though they were local common | |
2207 | symbols, and uses a different smclas. */ | |
2208 | ||
2209 | static void | |
2210 | ppc_comm (lcomm) | |
2211 | int lcomm; | |
2212 | { | |
2213 | asection *current_seg = now_seg; | |
2214 | subsegT current_subseg = now_subseg; | |
2215 | char *name; | |
2216 | char endc; | |
2217 | char *end_name; | |
2218 | offsetT size; | |
2219 | offsetT align; | |
2220 | symbolS *lcomm_sym = NULL; | |
2221 | symbolS *sym; | |
2222 | char *pfrag; | |
2223 | ||
2224 | name = input_line_pointer; | |
2225 | endc = get_symbol_end (); | |
2226 | end_name = input_line_pointer; | |
2227 | *end_name = endc; | |
2228 | ||
2229 | if (*input_line_pointer != ',') | |
2230 | { | |
2231 | as_bad ("missing size"); | |
2232 | ignore_rest_of_line (); | |
2233 | return; | |
2234 | } | |
2235 | ++input_line_pointer; | |
2236 | ||
2237 | size = get_absolute_expression (); | |
2238 | if (size < 0) | |
2239 | { | |
2240 | as_bad ("negative size"); | |
2241 | ignore_rest_of_line (); | |
2242 | return; | |
2243 | } | |
2244 | ||
2245 | if (! lcomm) | |
2246 | { | |
2247 | /* The third argument to .comm is the alignment. */ | |
2248 | if (*input_line_pointer != ',') | |
2249 | align = 3; | |
2250 | else | |
2251 | { | |
2252 | ++input_line_pointer; | |
2253 | align = get_absolute_expression (); | |
2254 | if (align <= 0) | |
2255 | { | |
2256 | as_warn ("ignoring bad alignment"); | |
2257 | align = 3; | |
2258 | } | |
2259 | } | |
2260 | } | |
2261 | else | |
2262 | { | |
2263 | char *lcomm_name; | |
2264 | char lcomm_endc; | |
2265 | ||
2266 | if (size <= 1) | |
2267 | align = 0; | |
2268 | else if (size <= 2) | |
2269 | align = 1; | |
2270 | else if (size <= 4) | |
2271 | align = 2; | |
2272 | else | |
2273 | align = 3; | |
2274 | ||
2275 | /* The third argument to .lcomm appears to be the real local | |
2276 | common symbol to create. References to the symbol named in | |
2277 | the first argument are turned into references to the third | |
2278 | argument. */ | |
2279 | if (*input_line_pointer != ',') | |
2280 | { | |
2281 | as_bad ("missing real symbol name"); | |
2282 | ignore_rest_of_line (); | |
2283 | return; | |
2284 | } | |
2285 | ++input_line_pointer; | |
2286 | ||
2287 | lcomm_name = input_line_pointer; | |
2288 | lcomm_endc = get_symbol_end (); | |
2289 | ||
2290 | lcomm_sym = symbol_find_or_make (lcomm_name); | |
2291 | ||
2292 | *input_line_pointer = lcomm_endc; | |
2293 | } | |
2294 | ||
2295 | *end_name = '\0'; | |
2296 | sym = symbol_find_or_make (name); | |
2297 | *end_name = endc; | |
2298 | ||
2299 | if (S_IS_DEFINED (sym) | |
2300 | || S_GET_VALUE (sym) != 0) | |
2301 | { | |
2302 | as_bad ("attempt to redefine symbol"); | |
2303 | ignore_rest_of_line (); | |
2304 | return; | |
2305 | } | |
2306 | ||
2307 | record_alignment (bss_section, align); | |
2308 | ||
2309 | if (! lcomm | |
2310 | || ! S_IS_DEFINED (lcomm_sym)) | |
2311 | { | |
2312 | symbolS *def_sym; | |
2313 | offsetT def_size; | |
2314 | ||
2315 | if (! lcomm) | |
2316 | { | |
2317 | def_sym = sym; | |
2318 | def_size = size; | |
2319 | S_SET_EXTERNAL (sym); | |
2320 | } | |
2321 | else | |
2322 | { | |
2323 | lcomm_sym->sy_tc.output = 1; | |
2324 | def_sym = lcomm_sym; | |
2325 | def_size = 0; | |
2326 | } | |
2327 | ||
2328 | subseg_set (bss_section, 1); | |
2329 | frag_align (align, 0); | |
2330 | ||
2331 | def_sym->sy_frag = frag_now; | |
2332 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym, | |
2333 | def_size, (char *) NULL); | |
2334 | *pfrag = 0; | |
2335 | S_SET_SEGMENT (def_sym, bss_section); | |
2336 | def_sym->sy_tc.align = align; | |
2337 | } | |
2338 | else if (lcomm) | |
2339 | { | |
2340 | /* Align the size of lcomm_sym. */ | |
2341 | lcomm_sym->sy_frag->fr_offset = | |
2342 | ((lcomm_sym->sy_frag->fr_offset + (1 << align) - 1) | |
2343 | &~ ((1 << align) - 1)); | |
2344 | if (align > lcomm_sym->sy_tc.align) | |
2345 | lcomm_sym->sy_tc.align = align; | |
2346 | } | |
2347 | ||
2348 | if (lcomm) | |
2349 | { | |
2350 | /* Make sym an offset from lcomm_sym. */ | |
2351 | S_SET_SEGMENT (sym, bss_section); | |
2352 | sym->sy_frag = lcomm_sym->sy_frag; | |
2353 | S_SET_VALUE (sym, lcomm_sym->sy_frag->fr_offset); | |
2354 | lcomm_sym->sy_frag->fr_offset += size; | |
2355 | } | |
2356 | ||
2357 | subseg_set (current_seg, current_subseg); | |
2358 | ||
2359 | demand_empty_rest_of_line (); | |
2360 | } | |
2361 | ||
2362 | /* The .csect pseudo-op. This switches us into a different | |
2363 | subsegment. The first argument is a symbol whose value is the | |
2364 | start of the .csect. In COFF, csect symbols get special aux | |
2365 | entries defined by the x_csect field of union internal_auxent. The | |
2366 | optional second argument is the alignment (the default is 2). */ | |
2367 | ||
2368 | static void | |
2369 | ppc_csect (ignore) | |
2370 | int ignore; | |
2371 | { | |
2372 | char *name; | |
2373 | char endc; | |
2374 | symbolS *sym; | |
2375 | ||
2376 | name = input_line_pointer; | |
2377 | endc = get_symbol_end (); | |
2378 | ||
2379 | sym = symbol_find_or_make (name); | |
2380 | ||
2381 | *input_line_pointer = endc; | |
2382 | ||
07ce72c9 ILT |
2383 | if (S_GET_NAME (sym)[0] == '\0') |
2384 | { | |
2385 | /* An unnamed csect is assumed to be [PR]. */ | |
2386 | sym->sy_tc.class = XMC_PR; | |
2387 | } | |
2388 | ||
df72d2a5 ILT |
2389 | ppc_change_csect (sym); |
2390 | ||
2391 | if (*input_line_pointer == ',') | |
2392 | { | |
2393 | ++input_line_pointer; | |
2394 | sym->sy_tc.align = get_absolute_expression (); | |
2395 | } | |
2396 | ||
2397 | demand_empty_rest_of_line (); | |
2398 | } | |
2399 | ||
2400 | /* Change to a different csect. */ | |
2401 | ||
2402 | static void | |
2403 | ppc_change_csect (sym) | |
2404 | symbolS *sym; | |
2405 | { | |
882bdc69 ILT |
2406 | if (S_IS_DEFINED (sym)) |
2407 | subseg_set (S_GET_SEGMENT (sym), sym->sy_tc.subseg); | |
2408 | else | |
2409 | { | |
2410 | symbolS **list_ptr; | |
2411 | int after_toc; | |
2412 | symbolS *list; | |
2413 | ||
2414 | /* This is a new csect. We need to look at the symbol class to | |
2415 | figure out whether it should go in the text section or the | |
2416 | data section. */ | |
2417 | after_toc = 0; | |
2418 | switch (sym->sy_tc.class) | |
2419 | { | |
2420 | case XMC_PR: | |
2421 | case XMC_RO: | |
2422 | case XMC_DB: | |
2423 | case XMC_GL: | |
2424 | case XMC_XO: | |
2425 | case XMC_SV: | |
2426 | case XMC_TI: | |
2427 | case XMC_TB: | |
2428 | S_SET_SEGMENT (sym, text_section); | |
2429 | sym->sy_tc.subseg = ppc_text_subsegment; | |
2430 | ++ppc_text_subsegment; | |
2431 | list_ptr = &ppc_text_csects; | |
2432 | break; | |
2433 | case XMC_RW: | |
2434 | case XMC_TC0: | |
2435 | case XMC_TC: | |
2436 | case XMC_DS: | |
2437 | case XMC_UA: | |
2438 | case XMC_BS: | |
2439 | case XMC_UC: | |
31751d9d ILT |
2440 | if (ppc_toc_csect != NULL |
2441 | && ppc_toc_csect->sy_tc.subseg + 1 == ppc_data_subsegment) | |
882bdc69 ILT |
2442 | after_toc = 1; |
2443 | S_SET_SEGMENT (sym, data_section); | |
2444 | sym->sy_tc.subseg = ppc_data_subsegment; | |
2445 | ++ppc_data_subsegment; | |
2446 | list_ptr = &ppc_data_csects; | |
2447 | break; | |
2448 | default: | |
2449 | abort (); | |
2450 | } | |
2451 | ||
2452 | subseg_new (segment_name (S_GET_SEGMENT (sym)), sym->sy_tc.subseg); | |
2453 | if (after_toc) | |
2454 | ppc_after_toc_frag = frag_now; | |
2455 | ||
2456 | sym->sy_frag = frag_now; | |
2457 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); | |
2458 | ||
2459 | sym->sy_tc.align = 2; | |
2460 | sym->sy_tc.output = 1; | |
2461 | sym->sy_tc.within = sym; | |
2462 | ||
2463 | for (list = *list_ptr; | |
2464 | list->sy_tc.next != (symbolS *) NULL; | |
2465 | list = list->sy_tc.next) | |
2466 | ; | |
2467 | list->sy_tc.next = sym; | |
2468 | ||
2469 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
2470 | symbol_append (sym, list->sy_tc.within, &symbol_rootP, &symbol_lastP); | |
2471 | } | |
2472 | ||
943dbfb8 | 2473 | ppc_current_csect = sym; |
df72d2a5 ILT |
2474 | } |
2475 | ||
2476 | /* This function handles the .text and .data pseudo-ops. These | |
2477 | pseudo-ops aren't really used by XCOFF; we implement them for the | |
2478 | convenience of people who aren't used to XCOFF. */ | |
2479 | ||
2480 | static void | |
2481 | ppc_section (type) | |
2482 | int type; | |
2483 | { | |
2484 | const char *name; | |
2485 | symbolS *sym; | |
2486 | ||
2487 | if (type == 't') | |
2488 | name = ".text[PR]"; | |
2489 | else if (type == 'd') | |
2490 | name = ".data[RW]"; | |
2491 | else | |
2492 | abort (); | |
2493 | ||
2494 | sym = symbol_find_or_make (name); | |
2495 | ||
2496 | ppc_change_csect (sym); | |
943dbfb8 | 2497 | |
882bdc69 ILT |
2498 | demand_empty_rest_of_line (); |
2499 | } | |
2500 | ||
2501 | /* The .extern pseudo-op. We create an undefined symbol. */ | |
2502 | ||
2503 | static void | |
2504 | ppc_extern (ignore) | |
2505 | int ignore; | |
2506 | { | |
2507 | char *name; | |
2508 | char endc; | |
2509 | ||
2510 | name = input_line_pointer; | |
2511 | endc = get_symbol_end (); | |
2512 | ||
2513 | (void) symbol_find_or_make (name); | |
2514 | ||
2515 | *input_line_pointer = endc; | |
2516 | ||
2517 | demand_empty_rest_of_line (); | |
2518 | } | |
2519 | ||
b629f627 | 2520 | /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */ |
882bdc69 ILT |
2521 | |
2522 | static void | |
2523 | ppc_lglobl (ignore) | |
2524 | int ignore; | |
2525 | { | |
b629f627 ILT |
2526 | char *name; |
2527 | char endc; | |
2528 | symbolS *sym; | |
2529 | ||
2530 | name = input_line_pointer; | |
2531 | endc = get_symbol_end (); | |
2532 | ||
2533 | sym = symbol_find_or_make (name); | |
2534 | ||
2535 | *input_line_pointer = endc; | |
2536 | ||
2537 | sym->sy_tc.output = 1; | |
2538 | ||
2539 | demand_empty_rest_of_line (); | |
882bdc69 ILT |
2540 | } |
2541 | ||
2542 | /* The .rename pseudo-op. The RS/6000 assembler can rename symbols, | |
2543 | although I don't know why it bothers. */ | |
2544 | ||
2545 | static void | |
2546 | ppc_rename (ignore) | |
2547 | int ignore; | |
2548 | { | |
2549 | char *name; | |
2550 | char endc; | |
2551 | symbolS *sym; | |
2552 | int len; | |
2553 | ||
2554 | name = input_line_pointer; | |
2555 | endc = get_symbol_end (); | |
2556 | ||
2557 | sym = symbol_find_or_make (name); | |
2558 | ||
2559 | *input_line_pointer = endc; | |
2560 | ||
2561 | if (*input_line_pointer != ',') | |
2562 | { | |
2563 | as_bad ("missing rename string"); | |
2564 | ignore_rest_of_line (); | |
2565 | return; | |
2566 | } | |
2567 | ++input_line_pointer; | |
2568 | ||
2569 | sym->sy_tc.real_name = demand_copy_C_string (&len); | |
2570 | ||
2571 | demand_empty_rest_of_line (); | |
2572 | } | |
2573 | ||
2574 | /* The .stabx pseudo-op. This is similar to a normal .stabs | |
2575 | pseudo-op, but slightly different. A sample is | |
2576 | .stabx "main:F-1",.main,142,0 | |
2577 | The first argument is the symbol name to create. The second is the | |
2578 | value, and the third is the storage class. The fourth seems to be | |
2579 | always zero, and I am assuming it is the type. */ | |
2580 | ||
2581 | static void | |
2582 | ppc_stabx (ignore) | |
2583 | int ignore; | |
2584 | { | |
2585 | char *name; | |
2586 | int len; | |
2587 | symbolS *sym; | |
1eeb357e | 2588 | expressionS exp; |
882bdc69 ILT |
2589 | |
2590 | name = demand_copy_C_string (&len); | |
2591 | ||
2592 | if (*input_line_pointer != ',') | |
2593 | { | |
2594 | as_bad ("missing value"); | |
2595 | return; | |
2596 | } | |
2597 | ++input_line_pointer; | |
2598 | ||
31751d9d | 2599 | ppc_stab_symbol = true; |
882bdc69 | 2600 | sym = symbol_make (name); |
31751d9d ILT |
2601 | ppc_stab_symbol = false; |
2602 | ||
2603 | sym->sy_tc.real_name = name; | |
1eeb357e ILT |
2604 | |
2605 | (void) expression (&exp); | |
2606 | ||
2607 | switch (exp.X_op) | |
2608 | { | |
2609 | case O_illegal: | |
2610 | case O_absent: | |
2611 | case O_big: | |
2612 | as_bad ("illegal .stabx expression; zero assumed"); | |
2613 | exp.X_add_number = 0; | |
2614 | /* Fall through. */ | |
2615 | case O_constant: | |
2616 | S_SET_VALUE (sym, (valueT) exp.X_add_number); | |
2617 | sym->sy_frag = &zero_address_frag; | |
2618 | break; | |
2619 | ||
2620 | case O_symbol: | |
2621 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section) | |
2622 | sym->sy_value = exp; | |
2623 | else | |
2624 | { | |
2625 | S_SET_VALUE (sym, | |
2626 | exp.X_add_number + S_GET_VALUE (exp.X_add_symbol)); | |
2627 | sym->sy_frag = exp.X_add_symbol->sy_frag; | |
2628 | } | |
2629 | break; | |
2630 | ||
2631 | default: | |
2632 | /* The value is some complex expression. This will probably | |
2633 | fail at some later point, but this is probably the right | |
2634 | thing to do here. */ | |
2635 | sym->sy_value = exp; | |
2636 | break; | |
2637 | } | |
882bdc69 ILT |
2638 | |
2639 | S_SET_SEGMENT (sym, ppc_coff_debug_section); | |
2640 | sym->bsym->flags |= BSF_DEBUGGING; | |
2641 | ||
2642 | if (*input_line_pointer != ',') | |
2643 | { | |
2644 | as_bad ("missing class"); | |
2645 | return; | |
2646 | } | |
2647 | ++input_line_pointer; | |
2648 | ||
2649 | S_SET_STORAGE_CLASS (sym, get_absolute_expression ()); | |
2650 | ||
2651 | if (*input_line_pointer != ',') | |
2652 | { | |
2653 | as_bad ("missing type"); | |
2654 | return; | |
2655 | } | |
2656 | ++input_line_pointer; | |
2657 | ||
2658 | S_SET_DATA_TYPE (sym, get_absolute_expression ()); | |
2659 | ||
2660 | sym->sy_tc.output = 1; | |
1eeb357e ILT |
2661 | |
2662 | if (S_GET_STORAGE_CLASS (sym) == C_STSYM) | |
2663 | sym->sy_tc.within = ppc_current_block; | |
2664 | ||
2665 | if (exp.X_op != O_symbol | |
2666 | || ! S_IS_EXTERNAL (exp.X_add_symbol) | |
2667 | || S_GET_SEGMENT (exp.X_add_symbol) != bss_section) | |
2668 | ppc_frob_label (sym); | |
2669 | else | |
2670 | { | |
2671 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
2672 | symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP); | |
2673 | if (ppc_current_csect->sy_tc.within == exp.X_add_symbol) | |
2674 | ppc_current_csect->sy_tc.within = sym; | |
2675 | } | |
882bdc69 | 2676 | |
882bdc69 ILT |
2677 | demand_empty_rest_of_line (); |
2678 | } | |
2679 | ||
2680 | /* The .function pseudo-op. This takes several arguments. The first | |
2681 | argument seems to be the external name of the symbol. The second | |
2682 | argment seems to be the label for the start of the function. gcc | |
2683 | uses the same name for both. I have no idea what the third and | |
2684 | fourth arguments are meant to be. The optional fifth argument is | |
2685 | an expression for the size of the function. In COFF this symbol | |
2686 | gets an aux entry like that used for a csect. */ | |
2687 | ||
2688 | static void | |
2689 | ppc_function (ignore) | |
2690 | int ignore; | |
2691 | { | |
2692 | char *name; | |
2693 | char endc; | |
2694 | char *s; | |
2695 | symbolS *ext_sym; | |
2696 | symbolS *lab_sym; | |
2697 | ||
2698 | name = input_line_pointer; | |
2699 | endc = get_symbol_end (); | |
2700 | ||
2701 | /* Ignore any [PR] suffix. */ | |
2702 | name = ppc_canonicalize_symbol_name (name); | |
2703 | s = strchr (name, '['); | |
2704 | if (s != (char *) NULL | |
2705 | && strcmp (s + 1, "PR]") == 0) | |
2706 | *s = '\0'; | |
2707 | ||
2708 | ext_sym = symbol_find_or_make (name); | |
2709 | ||
2710 | *input_line_pointer = endc; | |
2711 | ||
2712 | if (*input_line_pointer != ',') | |
2713 | { | |
2714 | as_bad ("missing symbol name"); | |
2715 | ignore_rest_of_line (); | |
2716 | return; | |
2717 | } | |
2718 | ++input_line_pointer; | |
2719 | ||
2720 | name = input_line_pointer; | |
2721 | endc = get_symbol_end (); | |
2722 | ||
2723 | lab_sym = symbol_find_or_make (name); | |
2724 | ||
2725 | *input_line_pointer = endc; | |
2726 | ||
2727 | if (ext_sym != lab_sym) | |
2728 | { | |
2729 | ext_sym->sy_value.X_op = O_symbol; | |
2730 | ext_sym->sy_value.X_add_symbol = lab_sym; | |
2731 | ext_sym->sy_value.X_op_symbol = NULL; | |
2732 | ext_sym->sy_value.X_add_number = 0; | |
2733 | } | |
2734 | ||
2735 | if (ext_sym->sy_tc.class == -1) | |
2736 | ext_sym->sy_tc.class = XMC_PR; | |
2737 | ext_sym->sy_tc.output = 1; | |
2738 | ||
2739 | if (*input_line_pointer == ',') | |
2740 | { | |
2741 | expressionS ignore; | |
2742 | ||
2743 | /* Ignore the third argument. */ | |
2744 | ++input_line_pointer; | |
2745 | expression (&ignore); | |
2746 | if (*input_line_pointer == ',') | |
2747 | { | |
2748 | /* Ignore the fourth argument. */ | |
2749 | ++input_line_pointer; | |
2750 | expression (&ignore); | |
2751 | if (*input_line_pointer == ',') | |
2752 | { | |
2753 | /* The fifth argument is the function size. */ | |
2754 | ++input_line_pointer; | |
2755 | ext_sym->sy_tc.size = symbol_new ("L0\001", | |
2756 | absolute_section, | |
2757 | (valueT) 0, | |
2758 | &zero_address_frag); | |
2759 | pseudo_set (ext_sym->sy_tc.size); | |
2760 | } | |
2761 | } | |
2762 | } | |
2763 | ||
2764 | S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT); | |
2765 | SF_SET_FUNCTION (ext_sym); | |
2766 | SF_SET_PROCESS (ext_sym); | |
2767 | coff_add_linesym (ext_sym); | |
2768 | ||
2769 | demand_empty_rest_of_line (); | |
2770 | } | |
2771 | ||
2772 | /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named | |
2773 | ".bf". */ | |
2774 | ||
2775 | static void | |
2776 | ppc_bf (ignore) | |
2777 | int ignore; | |
2778 | { | |
2779 | symbolS *sym; | |
882bdc69 ILT |
2780 | |
2781 | sym = symbol_make (".bf"); | |
2782 | S_SET_SEGMENT (sym, text_section); | |
2783 | sym->sy_frag = frag_now; | |
2784 | S_SET_VALUE (sym, frag_now_fix ()); | |
2785 | S_SET_STORAGE_CLASS (sym, C_FCN); | |
2786 | ||
1eeb357e | 2787 | coff_line_base = get_absolute_expression (); |
882bdc69 ILT |
2788 | |
2789 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
2790 | SA_SET_SYM_LNNO (sym, coff_line_base); | |
2791 | ||
2792 | sym->sy_tc.output = 1; | |
2793 | ||
2794 | ppc_frob_label (sym); | |
2795 | ||
2796 | demand_empty_rest_of_line (); | |
2797 | } | |
2798 | ||
2799 | /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named | |
2800 | ".ef", except that the line number is absolute, not relative to the | |
2801 | most recent ".bf" symbol. */ | |
2802 | ||
2803 | static void | |
2804 | ppc_ef (ignore) | |
2805 | int ignore; | |
2806 | { | |
2807 | symbolS *sym; | |
2808 | ||
2809 | sym = symbol_make (".ef"); | |
2810 | S_SET_SEGMENT (sym, text_section); | |
2811 | sym->sy_frag = frag_now; | |
2812 | S_SET_VALUE (sym, frag_now_fix ()); | |
2813 | S_SET_STORAGE_CLASS (sym, C_FCN); | |
2814 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
2815 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); | |
2816 | sym->sy_tc.output = 1; | |
2817 | ||
2818 | ppc_frob_label (sym); | |
2819 | ||
2820 | demand_empty_rest_of_line (); | |
2821 | } | |
2822 | ||
2823 | /* The .bi and .ei pseudo-ops. These take a string argument and | |
2824 | generates a C_BINCL or C_EINCL symbol, which goes at the start of | |
2825 | the symbol list. */ | |
2826 | ||
2827 | static void | |
2828 | ppc_biei (ei) | |
2829 | int ei; | |
2830 | { | |
2831 | char *name; | |
2832 | int len; | |
2833 | symbolS *sym; | |
2834 | symbolS *look; | |
2835 | ||
2836 | name = demand_copy_C_string (&len); | |
2837 | ||
4c2935f4 MM |
2838 | /* The value of these symbols is actually file offset. Here we set |
2839 | the value to the index into the line number entries. In | |
2840 | ppc_frob_symbols we set the fix_line field, which will cause BFD | |
2841 | to do the right thing. */ | |
2842 | ||
882bdc69 | 2843 | sym = symbol_make (name); |
4c2935f4 MM |
2844 | /* obj-coff.c currently only handles line numbers correctly in the |
2845 | .text section. */ | |
a3d1c561 ILT |
2846 | S_SET_SEGMENT (sym, text_section); |
2847 | S_SET_VALUE (sym, coff_n_line_nos); | |
2848 | sym->bsym->flags |= BSF_DEBUGGING; | |
882bdc69 ILT |
2849 | |
2850 | S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL); | |
2851 | sym->sy_tc.output = 1; | |
2852 | ||
2853 | for (look = symbol_rootP; | |
2854 | (look != (symbolS *) NULL | |
2855 | && (S_GET_STORAGE_CLASS (look) == C_FILE | |
2856 | || S_GET_STORAGE_CLASS (look) == C_BINCL | |
2857 | || S_GET_STORAGE_CLASS (look) == C_EINCL)); | |
2858 | look = symbol_next (look)) | |
2859 | ; | |
2860 | if (look != (symbolS *) NULL) | |
2861 | { | |
2862 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
2863 | symbol_insert (sym, look, &symbol_rootP, &symbol_lastP); | |
2864 | } | |
2865 | ||
2866 | demand_empty_rest_of_line (); | |
2867 | } | |
2868 | ||
2869 | /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs". | |
2870 | There is one argument, which is a csect symbol. The value of the | |
2871 | .bs symbol is the index of this csect symbol. */ | |
2872 | ||
2873 | static void | |
2874 | ppc_bs (ignore) | |
2875 | int ignore; | |
2876 | { | |
2877 | char *name; | |
2878 | char endc; | |
2879 | symbolS *csect; | |
2880 | symbolS *sym; | |
2881 | ||
1eeb357e ILT |
2882 | if (ppc_current_block != NULL) |
2883 | as_bad ("nested .bs blocks"); | |
2884 | ||
882bdc69 ILT |
2885 | name = input_line_pointer; |
2886 | endc = get_symbol_end (); | |
2887 | ||
2888 | csect = symbol_find_or_make (name); | |
2889 | ||
2890 | *input_line_pointer = endc; | |
2891 | ||
2892 | sym = symbol_make (".bs"); | |
2893 | S_SET_SEGMENT (sym, now_seg); | |
2894 | S_SET_STORAGE_CLASS (sym, C_BSTAT); | |
2895 | sym->bsym->flags |= BSF_DEBUGGING; | |
2896 | sym->sy_tc.output = 1; | |
2897 | ||
2898 | sym->sy_tc.within = csect; | |
2899 | ||
2900 | ppc_frob_label (sym); | |
2901 | ||
1eeb357e ILT |
2902 | ppc_current_block = sym; |
2903 | ||
882bdc69 ILT |
2904 | demand_empty_rest_of_line (); |
2905 | } | |
2906 | ||
2907 | /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */ | |
2908 | ||
2909 | static void | |
2910 | ppc_es (ignore) | |
2911 | int ignore; | |
2912 | { | |
2913 | symbolS *sym; | |
2914 | ||
1eeb357e ILT |
2915 | if (ppc_current_block == NULL) |
2916 | as_bad (".es without preceding .bs"); | |
2917 | ||
882bdc69 ILT |
2918 | sym = symbol_make (".es"); |
2919 | S_SET_SEGMENT (sym, now_seg); | |
2920 | S_SET_STORAGE_CLASS (sym, C_ESTAT); | |
2921 | sym->bsym->flags |= BSF_DEBUGGING; | |
2922 | sym->sy_tc.output = 1; | |
2923 | ||
2924 | ppc_frob_label (sym); | |
2925 | ||
1eeb357e ILT |
2926 | ppc_current_block = NULL; |
2927 | ||
882bdc69 ILT |
2928 | demand_empty_rest_of_line (); |
2929 | } | |
2930 | ||
2931 | /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a | |
2932 | line number. */ | |
2933 | ||
2934 | static void | |
2935 | ppc_bb (ignore) | |
2936 | int ignore; | |
2937 | { | |
2938 | symbolS *sym; | |
2939 | ||
2940 | sym = symbol_make (".bb"); | |
2941 | S_SET_SEGMENT (sym, text_section); | |
2942 | sym->sy_frag = frag_now; | |
2943 | S_SET_VALUE (sym, frag_now_fix ()); | |
2944 | S_SET_STORAGE_CLASS (sym, C_BLOCK); | |
2945 | ||
2946 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
2947 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); | |
2948 | ||
2949 | sym->sy_tc.output = 1; | |
2950 | ||
7ab1edc8 ILT |
2951 | SF_SET_PROCESS (sym); |
2952 | ||
882bdc69 ILT |
2953 | ppc_frob_label (sym); |
2954 | ||
2955 | demand_empty_rest_of_line (); | |
2956 | } | |
2957 | ||
2958 | /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a | |
2959 | line number. */ | |
2960 | ||
2961 | static void | |
2962 | ppc_eb (ignore) | |
2963 | int ignore; | |
2964 | { | |
2965 | symbolS *sym; | |
2966 | ||
2967 | sym = symbol_make (".eb"); | |
2968 | S_SET_SEGMENT (sym, text_section); | |
2969 | sym->sy_frag = frag_now; | |
2970 | S_SET_VALUE (sym, frag_now_fix ()); | |
7ab1edc8 | 2971 | S_SET_STORAGE_CLASS (sym, C_BLOCK); |
882bdc69 ILT |
2972 | S_SET_NUMBER_AUXILIARY (sym, 1); |
2973 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); | |
2974 | sym->sy_tc.output = 1; | |
2975 | ||
7ab1edc8 ILT |
2976 | SF_SET_PROCESS (sym); |
2977 | ||
882bdc69 ILT |
2978 | ppc_frob_label (sym); |
2979 | ||
2980 | demand_empty_rest_of_line (); | |
2981 | } | |
2982 | ||
31751d9d ILT |
2983 | /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a |
2984 | specified name. */ | |
2985 | ||
2986 | static void | |
2987 | ppc_bc (ignore) | |
2988 | int ignore; | |
2989 | { | |
2990 | char *name; | |
2991 | int len; | |
2992 | symbolS *sym; | |
2993 | ||
2994 | name = demand_copy_C_string (&len); | |
2995 | sym = symbol_make (name); | |
2996 | S_SET_SEGMENT (sym, ppc_coff_debug_section); | |
2997 | sym->bsym->flags |= BSF_DEBUGGING; | |
2998 | S_SET_STORAGE_CLASS (sym, C_BCOMM); | |
2999 | S_SET_VALUE (sym, 0); | |
3000 | sym->sy_tc.output = 1; | |
3001 | ||
3002 | ppc_frob_label (sym); | |
3003 | ||
31751d9d ILT |
3004 | demand_empty_rest_of_line (); |
3005 | } | |
3006 | ||
3007 | /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */ | |
3008 | ||
3009 | static void | |
3010 | ppc_ec (ignore) | |
3011 | int ignore; | |
3012 | { | |
3013 | symbolS *sym; | |
3014 | ||
3015 | sym = symbol_make (".ec"); | |
3016 | S_SET_SEGMENT (sym, ppc_coff_debug_section); | |
3017 | sym->bsym->flags |= BSF_DEBUGGING; | |
3018 | S_SET_STORAGE_CLASS (sym, C_ECOMM); | |
3019 | S_SET_VALUE (sym, 0); | |
3020 | sym->sy_tc.output = 1; | |
3021 | ||
3022 | ppc_frob_label (sym); | |
3023 | ||
3024 | demand_empty_rest_of_line (); | |
3025 | } | |
3026 | ||
882bdc69 ILT |
3027 | /* The .toc pseudo-op. Switch to the .toc subsegment. */ |
3028 | ||
3029 | static void | |
3030 | ppc_toc (ignore) | |
3031 | int ignore; | |
3032 | { | |
3033 | if (ppc_toc_csect != (symbolS *) NULL) | |
3034 | subseg_set (data_section, ppc_toc_csect->sy_tc.subseg); | |
3035 | else | |
3036 | { | |
3037 | subsegT subseg; | |
3038 | symbolS *sym; | |
3039 | symbolS *list; | |
3040 | ||
3041 | subseg = ppc_data_subsegment; | |
3042 | ++ppc_data_subsegment; | |
3043 | ||
3044 | subseg_new (segment_name (data_section), subseg); | |
3045 | ppc_toc_frag = frag_now; | |
3046 | ||
3047 | sym = symbol_find_or_make ("TOC[TC0]"); | |
3048 | sym->sy_frag = frag_now; | |
3049 | S_SET_SEGMENT (sym, data_section); | |
3050 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); | |
3051 | sym->sy_tc.subseg = subseg; | |
3052 | sym->sy_tc.output = 1; | |
3053 | sym->sy_tc.within = sym; | |
3054 | ||
3055 | ppc_toc_csect = sym; | |
3056 | ||
3057 | for (list = ppc_data_csects; | |
3058 | list->sy_tc.next != (symbolS *) NULL; | |
3059 | list = list->sy_tc.next) | |
3060 | ; | |
3061 | list->sy_tc.next = sym; | |
3062 | ||
3063 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
3064 | symbol_append (sym, list->sy_tc.within, &symbol_rootP, &symbol_lastP); | |
3065 | } | |
3066 | ||
943dbfb8 KK |
3067 | ppc_current_csect = ppc_toc_csect; |
3068 | ||
882bdc69 ILT |
3069 | demand_empty_rest_of_line (); |
3070 | } | |
3071 | ||
fbd929fd ILT |
3072 | /* The AIX assembler automatically aligns the operands of a .long or |
3073 | .short pseudo-op, and we want to be compatible. */ | |
3074 | ||
3075 | static void | |
3076 | ppc_xcoff_cons (log_size) | |
3077 | int log_size; | |
3078 | { | |
3079 | frag_align (log_size, 0); | |
3080 | record_alignment (now_seg, log_size); | |
3081 | cons (1 << log_size); | |
3082 | } | |
3083 | ||
18c9057f | 3084 | #endif /* OBJ_XCOFF */ |
882bdc69 ILT |
3085 | \f |
3086 | /* The .tc pseudo-op. This is used when generating either XCOFF or | |
3087 | ELF. This takes two or more arguments. | |
3088 | ||
3089 | When generating XCOFF output, the first argument is the name to | |
3090 | give to this location in the toc; this will be a symbol with class | |
3091 | TC. The rest of the arguments are 4 byte values to actually put at | |
3092 | this location in the TOC; often there is just one more argument, a | |
3093 | relocateable symbol reference. | |
3094 | ||
3095 | When not generating XCOFF output, the arguments are the same, but | |
3096 | the first argument is simply ignored. */ | |
3097 | ||
3098 | static void | |
3099 | ppc_tc (ignore) | |
3100 | int ignore; | |
3101 | { | |
18c9057f | 3102 | #ifdef OBJ_XCOFF |
882bdc69 ILT |
3103 | |
3104 | /* Define the TOC symbol name. */ | |
3105 | { | |
3106 | char *name; | |
3107 | char endc; | |
3108 | symbolS *sym; | |
3109 | ||
3110 | if (ppc_toc_csect == (symbolS *) NULL | |
3111 | || ppc_toc_csect != ppc_current_csect) | |
3112 | { | |
3113 | as_bad (".tc not in .toc section"); | |
3114 | ignore_rest_of_line (); | |
3115 | return; | |
3116 | } | |
3117 | ||
3118 | name = input_line_pointer; | |
3119 | endc = get_symbol_end (); | |
3120 | ||
3121 | sym = symbol_find_or_make (name); | |
3122 | ||
3123 | *input_line_pointer = endc; | |
3124 | ||
3125 | if (S_IS_DEFINED (sym)) | |
3126 | { | |
3127 | symbolS *label; | |
3128 | ||
3129 | label = ppc_current_csect->sy_tc.within; | |
3130 | if (label->sy_tc.class != XMC_TC0) | |
3131 | { | |
f8a011cf | 3132 | as_bad (".tc with no label"); |
882bdc69 ILT |
3133 | ignore_rest_of_line (); |
3134 | return; | |
3135 | } | |
3136 | ||
3137 | S_SET_SEGMENT (label, S_GET_SEGMENT (sym)); | |
3138 | label->sy_frag = sym->sy_frag; | |
3139 | S_SET_VALUE (label, S_GET_VALUE (sym)); | |
3140 | ||
3141 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
3142 | ++input_line_pointer; | |
3143 | ||
3144 | return; | |
3145 | } | |
3146 | ||
3147 | S_SET_SEGMENT (sym, now_seg); | |
3148 | sym->sy_frag = frag_now; | |
3149 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); | |
3150 | sym->sy_tc.class = XMC_TC; | |
3151 | sym->sy_tc.output = 1; | |
3152 | ||
3153 | ppc_frob_label (sym); | |
3154 | } | |
3155 | ||
18c9057f | 3156 | #else /* ! defined (OBJ_XCOFF) */ |
882bdc69 ILT |
3157 | |
3158 | /* Skip the TOC symbol name. */ | |
3159 | while (is_part_of_name (*input_line_pointer) | |
3160 | || *input_line_pointer == '[' | |
3161 | || *input_line_pointer == ']' | |
3162 | || *input_line_pointer == '{' | |
3163 | || *input_line_pointer == '}') | |
3164 | ++input_line_pointer; | |
3165 | ||
1eeb357e ILT |
3166 | /* Align to a four byte boundary. */ |
3167 | frag_align (2, 0); | |
3168 | record_alignment (now_seg, 2); | |
3169 | ||
18c9057f | 3170 | #endif /* ! defined (OBJ_XCOFF) */ |
882bdc69 ILT |
3171 | |
3172 | if (*input_line_pointer != ',') | |
3173 | demand_empty_rest_of_line (); | |
3174 | else | |
3175 | { | |
3176 | ++input_line_pointer; | |
3177 | cons (4); | |
3178 | } | |
3179 | } | |
1f7cc434 KK |
3180 | \f |
3181 | #ifdef TE_PE | |
1f7cc434 | 3182 | |
cd557d83 | 3183 | /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format */ |
1f7cc434 | 3184 | |
18c9057f | 3185 | /* Set the current section. */ |
18c9057f ILT |
3186 | static void |
3187 | ppc_set_current_section (new) | |
3188 | segT new; | |
3189 | { | |
3190 | ppc_previous_section = ppc_current_section; | |
3191 | ppc_current_section = new; | |
3192 | } | |
1f7cc434 KK |
3193 | |
3194 | /* pseudo-op: .previous | |
3195 | behaviour: toggles the current section with the previous section. | |
3196 | errors: None | |
3197 | warnings: "No previous section" | |
3198 | */ | |
3199 | static void | |
3200 | ppc_previous(ignore) | |
3201 | int ignore; | |
3202 | { | |
3203 | symbolS *tmp; | |
3204 | ||
3205 | if (ppc_previous_section == NULL) | |
3206 | { | |
3207 | as_warn("No previous section to return to. Directive ignored."); | |
3208 | return; | |
3209 | } | |
3210 | ||
3211 | subseg_set(ppc_previous_section, 0); | |
3212 | ||
18c9057f | 3213 | ppc_set_current_section(ppc_previous_section); |
1f7cc434 KK |
3214 | } |
3215 | ||
3216 | /* pseudo-op: .pdata | |
3217 | behaviour: predefined read only data section | |
3218 | double word aligned | |
3219 | errors: None | |
3220 | warnings: None | |
3221 | initial: .section .pdata "adr3" | |
3222 | a - don't know -- maybe a misprint | |
3223 | d - initialized data | |
3224 | r - readable | |
3225 | 3 - double word aligned (that would be 4 byte boundary) | |
3226 | ||
3227 | commentary: | |
3228 | Tag index tables (also known as the function table) for exception | |
3229 | handling, debugging, etc. | |
3230 | ||
3231 | */ | |
3232 | static void | |
3233 | ppc_pdata(ignore) | |
3234 | int ignore; | |
3235 | { | |
3236 | if (pdata_section == 0) | |
3237 | { | |
3238 | pdata_section = subseg_new (".pdata", 0); | |
3239 | ||
3240 | bfd_set_section_flags (stdoutput, pdata_section, | |
3241 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
3242 | | SEC_READONLY | SEC_DATA )); | |
3243 | ||
0291f0f5 | 3244 | bfd_set_section_alignment (stdoutput, pdata_section, 2); |
1f7cc434 KK |
3245 | } |
3246 | else | |
3247 | { | |
3248 | pdata_section = subseg_new(".pdata", 0); | |
3249 | } | |
18c9057f | 3250 | ppc_set_current_section(pdata_section); |
1f7cc434 KK |
3251 | } |
3252 | ||
3253 | /* pseudo-op: .ydata | |
3254 | behaviour: predefined read only data section | |
3255 | double word aligned | |
3256 | errors: None | |
3257 | warnings: None | |
3258 | initial: .section .ydata "drw3" | |
3259 | a - don't know -- maybe a misprint | |
3260 | d - initialized data | |
3261 | r - readable | |
3262 | 3 - double word aligned (that would be 4 byte boundary) | |
3263 | commentary: | |
3264 | Tag tables (also known as the scope table) for exception handling, | |
3265 | debugging, etc. | |
3266 | */ | |
3267 | static void | |
3268 | ppc_ydata(ignore) | |
3269 | int ignore; | |
3270 | { | |
3271 | if (ydata_section == 0) | |
3272 | { | |
3273 | ydata_section = subseg_new (".ydata", 0); | |
3274 | bfd_set_section_flags (stdoutput, ydata_section, | |
3275 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
3276 | | SEC_READONLY | SEC_DATA )); | |
3277 | ||
3278 | bfd_set_section_alignment (stdoutput, ydata_section, 3); | |
3279 | } | |
3280 | else | |
3281 | { | |
3282 | ydata_section = subseg_new (".ydata", 0); | |
3283 | } | |
18c9057f | 3284 | ppc_set_current_section(ydata_section); |
1f7cc434 KK |
3285 | } |
3286 | ||
3287 | /* pseudo-op: .reldata | |
3288 | behaviour: predefined read write data section | |
3289 | double word aligned (4-byte) | |
3290 | FIXME: relocation is applied to it | |
3291 | FIXME: what's the difference between this and .data? | |
3292 | errors: None | |
3293 | warnings: None | |
3294 | initial: .section .reldata "drw3" | |
3295 | d - initialized data | |
3296 | r - readable | |
3297 | w - writeable | |
3298 | 3 - double word aligned (that would be 8 byte boundary) | |
3299 | ||
3300 | commentary: | |
3301 | Like .data, but intended to hold data subject to relocation, such as | |
3302 | function descriptors, etc. | |
3303 | */ | |
3304 | static void | |
3305 | ppc_reldata(ignore) | |
3306 | int ignore; | |
3307 | { | |
3308 | if (reldata_section == 0) | |
3309 | { | |
3310 | reldata_section = subseg_new (".reldata", 0); | |
3311 | ||
3312 | bfd_set_section_flags (stdoutput, reldata_section, | |
3313 | ( SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
3314 | | SEC_DATA )); | |
3315 | ||
0291f0f5 | 3316 | bfd_set_section_alignment (stdoutput, reldata_section, 2); |
1f7cc434 KK |
3317 | } |
3318 | else | |
3319 | { | |
3320 | reldata_section = subseg_new (".reldata", 0); | |
3321 | } | |
18c9057f | 3322 | ppc_set_current_section(reldata_section); |
1f7cc434 KK |
3323 | } |
3324 | ||
3325 | /* pseudo-op: .rdata | |
3326 | behaviour: predefined read only data section | |
3327 | double word aligned | |
3328 | errors: None | |
3329 | warnings: None | |
3330 | initial: .section .rdata "dr3" | |
3331 | d - initialized data | |
3332 | r - readable | |
3333 | 3 - double word aligned (that would be 4 byte boundary) | |
3334 | */ | |
3335 | static void | |
3336 | ppc_rdata(ignore) | |
3337 | int ignore; | |
3338 | { | |
3339 | if (rdata_section == 0) | |
3340 | { | |
3341 | rdata_section = subseg_new (".rdata", 0); | |
3342 | bfd_set_section_flags (stdoutput, rdata_section, | |
3343 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
3344 | | SEC_READONLY | SEC_DATA )); | |
3345 | ||
3346 | bfd_set_section_alignment (stdoutput, rdata_section, 2); | |
3347 | } | |
3348 | else | |
3349 | { | |
3350 | rdata_section = subseg_new (".rdata", 0); | |
3351 | } | |
18c9057f | 3352 | ppc_set_current_section(rdata_section); |
1f7cc434 KK |
3353 | } |
3354 | ||
3355 | /* pseudo-op: .ualong | |
3356 | behaviour: much like .int, with the exception that no alignment is | |
3357 | performed. | |
3358 | FIXME: test the alignment statement | |
3359 | errors: None | |
3360 | warnings: None | |
3361 | */ | |
3362 | static void | |
3363 | ppc_ualong(ignore) | |
3364 | int ignore; | |
3365 | { | |
3366 | /* try for long */ | |
3367 | cons ( 4 ); | |
3368 | } | |
3369 | ||
3370 | /* pseudo-op: .znop <symbol name> | |
3371 | behaviour: Issue a nop instruction | |
3372 | Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using | |
3373 | the supplied symbol name. | |
3374 | errors: None | |
3375 | warnings: Missing symbol name | |
3376 | */ | |
3377 | static void | |
3378 | ppc_znop(ignore) | |
3379 | int ignore; | |
3380 | { | |
3381 | unsigned long insn; | |
3382 | const struct powerpc_opcode *opcode; | |
3383 | expressionS ex; | |
3384 | char *f; | |
3385 | ||
3386 | symbolS *sym; | |
3387 | ||
3388 | /* Strip out the symbol name */ | |
3389 | char *symbol_name; | |
3390 | char c; | |
3391 | char *name; | |
3392 | unsigned int exp; | |
3393 | flagword flags; | |
3394 | asection *sec; | |
3395 | ||
3396 | symbol_name = input_line_pointer; | |
3397 | c = get_symbol_end (); | |
3398 | ||
3399 | name = xmalloc (input_line_pointer - symbol_name + 1); | |
3400 | strcpy (name, symbol_name); | |
3401 | ||
3402 | sym = symbol_find_or_make (name); | |
3403 | ||
3404 | *input_line_pointer = c; | |
3405 | ||
3406 | SKIP_WHITESPACE (); | |
3407 | ||
3408 | /* Look up the opcode in the hash table. */ | |
3409 | opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop"); | |
3410 | ||
3411 | /* stick in the nop */ | |
3412 | insn = opcode->opcode; | |
3413 | ||
3414 | /* Write out the instruction. */ | |
3415 | f = frag_more (4); | |
3416 | md_number_to_chars (f, insn, 4); | |
3417 | fix_new (frag_now, | |
3418 | f - frag_now->fr_literal, | |
3419 | 4, | |
3420 | sym, | |
3421 | 0, | |
3422 | 0, | |
3423 | BFD_RELOC_16_GOT_PCREL); | |
3424 | ||
3425 | } | |
ca0bd54f | 3426 | |
1f7cc434 KK |
3427 | /* pseudo-op: |
3428 | behaviour: | |
3429 | errors: | |
3430 | warnings: | |
3431 | */ | |
3432 | static void | |
3433 | ppc_pe_comm(lcomm) | |
3434 | int lcomm; | |
3435 | { | |
3436 | register char *name; | |
3437 | register char c; | |
3438 | register char *p; | |
3439 | offsetT temp; | |
3440 | register symbolS *symbolP; | |
3441 | offsetT align; | |
3442 | ||
3443 | name = input_line_pointer; | |
3444 | c = get_symbol_end (); | |
3445 | ||
3446 | /* just after name is now '\0' */ | |
3447 | p = input_line_pointer; | |
3448 | *p = c; | |
3449 | SKIP_WHITESPACE (); | |
3450 | if (*input_line_pointer != ',') | |
3451 | { | |
3452 | as_bad ("Expected comma after symbol-name: rest of line ignored."); | |
3453 | ignore_rest_of_line (); | |
3454 | return; | |
3455 | } | |
3456 | ||
3457 | input_line_pointer++; /* skip ',' */ | |
3458 | if ((temp = get_absolute_expression ()) < 0) | |
3459 | { | |
3460 | as_warn (".COMMon length (%ld.) <0! Ignored.", (long) temp); | |
3461 | ignore_rest_of_line (); | |
3462 | return; | |
3463 | } | |
3464 | ||
3465 | if (! lcomm) | |
3466 | { | |
3467 | /* The third argument to .comm is the alignment. */ | |
3468 | if (*input_line_pointer != ',') | |
3469 | align = 3; | |
3470 | else | |
3471 | { | |
3472 | ++input_line_pointer; | |
3473 | align = get_absolute_expression (); | |
3474 | if (align <= 0) | |
3475 | { | |
3476 | as_warn ("ignoring bad alignment"); | |
3477 | align = 3; | |
3478 | } | |
3479 | } | |
3480 | } | |
3481 | ||
3482 | *p = 0; | |
3483 | symbolP = symbol_find_or_make (name); | |
3484 | ||
3485 | *p = c; | |
3486 | if (S_IS_DEFINED (symbolP)) | |
3487 | { | |
3488 | as_bad ("Ignoring attempt to re-define symbol `%s'.", | |
3489 | S_GET_NAME (symbolP)); | |
3490 | ignore_rest_of_line (); | |
3491 | return; | |
3492 | } | |
3493 | ||
3494 | if (S_GET_VALUE (symbolP)) | |
3495 | { | |
3496 | if (S_GET_VALUE (symbolP) != (valueT) temp) | |
3497 | as_bad ("Length of .comm \"%s\" is already %ld. Not changed to %ld.", | |
3498 | S_GET_NAME (symbolP), | |
3499 | (long) S_GET_VALUE (symbolP), | |
3500 | (long) temp); | |
3501 | } | |
3502 | else | |
3503 | { | |
3504 | S_SET_VALUE (symbolP, (valueT) temp); | |
3505 | S_SET_EXTERNAL (symbolP); | |
3506 | } | |
3507 | ||
3508 | demand_empty_rest_of_line (); | |
3509 | } | |
3510 | ||
3511 | /* | |
3512 | * implement the .section pseudo op: | |
3513 | * .section name {, "flags"} | |
3514 | * ^ ^ | |
3515 | * | +--- optional flags: 'b' for bss | |
3516 | * | 'i' for info | |
3517 | * +-- section name 'l' for lib | |
3518 | * 'n' for noload | |
3519 | * 'o' for over | |
3520 | * 'w' for data | |
3521 | * 'd' (apparently m88k for data) | |
3522 | * 'x' for text | |
3523 | * But if the argument is not a quoted string, treat it as a | |
3524 | * subsegment number. | |
3525 | * | |
3526 | * FIXME: this is a copy of the section processing from obj-coff.c, with | |
3527 | * additions/changes for the moto-pas assembler support. There are three | |
3528 | * categories: | |
3529 | * | |
cd557d83 ILT |
3530 | * FIXME: I just noticed this. This doesn't work at all really. It it |
3531 | * setting bits that bfd probably neither understands or uses. The | |
3532 | * correct approach (?) will have to incorporate extra fields attached | |
3533 | * to the section to hold the system specific stuff. (krk) | |
3534 | * | |
1f7cc434 KK |
3535 | * Section Contents: |
3536 | * 'a' - unknown - referred to in documentation, but no definition supplied | |
3537 | * 'c' - section has code | |
3538 | * 'd' - section has initialized data | |
3539 | * 'u' - section has uninitialized data | |
3540 | * 'i' - section contains directives (info) | |
3541 | * 'n' - section can be discarded | |
3542 | * 'R' - remove section at link time | |
3543 | * | |
3544 | * Section Protection: | |
3545 | * 'r' - section is readable | |
3546 | * 'w' - section is writeable | |
3547 | * 'x' - section is executable | |
3548 | * 's' - section is sharable | |
3549 | * | |
3550 | * Section Alignment: | |
3551 | * '0' - align to byte boundary | |
3552 | * '1' - align to halfword undary | |
3553 | * '2' - align to word boundary | |
3554 | * '3' - align to doubleword boundary | |
3555 | * '4' - align to quadword boundary | |
3556 | * '5' - align to 32 byte boundary | |
3557 | * '6' - align to 64 byte boundary | |
3558 | * | |
3559 | */ | |
3560 | ||
3561 | void | |
3562 | ppc_pe_section (ignore) | |
3563 | int ignore; | |
3564 | { | |
3565 | /* Strip out the section name */ | |
3566 | char *section_name; | |
3567 | char c; | |
3568 | char *name; | |
3569 | unsigned int exp; | |
3570 | flagword flags; | |
3571 | segT sec; | |
3572 | int align; | |
3573 | ||
1f7cc434 KK |
3574 | section_name = input_line_pointer; |
3575 | c = get_symbol_end (); | |
3576 | ||
3577 | name = xmalloc (input_line_pointer - section_name + 1); | |
3578 | strcpy (name, section_name); | |
3579 | ||
3580 | *input_line_pointer = c; | |
3581 | ||
3582 | SKIP_WHITESPACE (); | |
3583 | ||
3584 | exp = 0; | |
3585 | flags = SEC_NO_FLAGS; | |
3586 | ||
531a1af2 KK |
3587 | if (strcmp (name, ".idata$2") == 0) |
3588 | { | |
3589 | align = 0; | |
3590 | } | |
3591 | else if (strcmp (name, ".idata$3") == 0) | |
3592 | { | |
3593 | align = 0; | |
3594 | } | |
3595 | else if (strcmp (name, ".idata$4") == 0) | |
3596 | { | |
3597 | align = 2; | |
3598 | } | |
3599 | else if (strcmp (name, ".idata$5") == 0) | |
3600 | { | |
3601 | align = 2; | |
3602 | } | |
3603 | else if (strcmp (name, ".idata$6") == 0) | |
3604 | { | |
3605 | align = 1; | |
3606 | } | |
3607 | else | |
3608 | align = 4; /* default alignment to 16 byte boundary */ | |
3609 | ||
1f7cc434 KK |
3610 | if (*input_line_pointer == ',') |
3611 | { | |
3612 | ++input_line_pointer; | |
3613 | SKIP_WHITESPACE (); | |
3614 | if (*input_line_pointer != '"') | |
3615 | exp = get_absolute_expression (); | |
3616 | else | |
3617 | { | |
3618 | ++input_line_pointer; | |
3619 | while (*input_line_pointer != '"' | |
3620 | && ! is_end_of_line[(unsigned char) *input_line_pointer]) | |
3621 | { | |
3622 | switch (*input_line_pointer) | |
3623 | { | |
3624 | /* Section Contents */ | |
3625 | case 'a': /* unknown */ | |
f8a011cf | 3626 | as_bad ("Unsupported section attribute -- 'a'"); |
1f7cc434 KK |
3627 | break; |
3628 | case 'c': /* code section */ | |
3629 | flags |= SEC_CODE; | |
3630 | break; | |
3631 | case 'd': /* section has initialized data */ | |
3632 | flags |= SEC_DATA; | |
3633 | break; | |
3634 | case 'u': /* section has uninitialized data */ | |
3635 | /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA | |
3636 | in winnt.h */ | |
3637 | flags |= SEC_ROM; | |
3638 | break; | |
3639 | case 'i': /* section contains directives (info) */ | |
3640 | /* FIXME: This is IMAGE_SCN_LNK_INFO | |
3641 | in winnt.h */ | |
3642 | flags |= SEC_HAS_CONTENTS; | |
3643 | break; | |
3644 | case 'n': /* section can be discarded */ | |
3645 | flags &=~ SEC_LOAD; | |
3646 | break; | |
3647 | case 'R': /* Remove section at link time */ | |
3648 | flags |= SEC_NEVER_LOAD; | |
3649 | break; | |
1f7cc434 | 3650 | |
cd557d83 | 3651 | /* Section Protection */ |
1f7cc434 KK |
3652 | case 'r': /* section is readable */ |
3653 | flags |= IMAGE_SCN_MEM_READ; | |
3654 | break; | |
3655 | case 'w': /* section is writeable */ | |
3656 | flags |= IMAGE_SCN_MEM_WRITE; | |
3657 | break; | |
3658 | case 'x': /* section is executable */ | |
3659 | flags |= IMAGE_SCN_MEM_EXECUTE; | |
3660 | break; | |
3661 | case 's': /* section is sharable */ | |
3662 | flags |= IMAGE_SCN_MEM_SHARED; | |
3663 | break; | |
3664 | ||
3665 | /* Section Alignment */ | |
1f7cc434 KK |
3666 | case '0': /* align to byte boundary */ |
3667 | flags |= IMAGE_SCN_ALIGN_1BYTES; | |
3668 | align = 0; | |
3669 | break; | |
3670 | case '1': /* align to halfword boundary */ | |
3671 | flags |= IMAGE_SCN_ALIGN_2BYTES; | |
3672 | align = 1; | |
3673 | break; | |
3674 | case '2': /* align to word boundary */ | |
3675 | flags |= IMAGE_SCN_ALIGN_4BYTES; | |
3676 | align = 2; | |
3677 | break; | |
3678 | case '3': /* align to doubleword boundary */ | |
3679 | flags |= IMAGE_SCN_ALIGN_8BYTES; | |
3680 | align = 3; | |
3681 | break; | |
3682 | case '4': /* align to quadword boundary */ | |
3683 | flags |= IMAGE_SCN_ALIGN_16BYTES; | |
3684 | align = 4; | |
3685 | break; | |
3686 | case '5': /* align to 32 byte boundary */ | |
3687 | flags |= IMAGE_SCN_ALIGN_32BYTES; | |
3688 | align = 5; | |
3689 | break; | |
3690 | case '6': /* align to 64 byte boundary */ | |
3691 | flags |= IMAGE_SCN_ALIGN_64BYTES; | |
3692 | align = 6; | |
3693 | break; | |
3694 | ||
3695 | default: | |
f8a011cf MM |
3696 | as_bad("unknown section attribute '%c'", |
3697 | *input_line_pointer); | |
1f7cc434 KK |
3698 | break; |
3699 | } | |
3700 | ++input_line_pointer; | |
3701 | } | |
3702 | if (*input_line_pointer == '"') | |
3703 | ++input_line_pointer; | |
3704 | } | |
3705 | } | |
3706 | ||
3707 | sec = subseg_new (name, (subsegT) exp); | |
3708 | ||
18c9057f | 3709 | ppc_set_current_section(sec); |
1f7cc434 KK |
3710 | |
3711 | if (flags != SEC_NO_FLAGS) | |
3712 | { | |
3713 | if (! bfd_set_section_flags (stdoutput, sec, flags)) | |
f8a011cf MM |
3714 | as_bad ("error setting flags for \"%s\": %s", |
3715 | bfd_section_name (stdoutput, sec), | |
3716 | bfd_errmsg (bfd_get_error ())); | |
1f7cc434 KK |
3717 | } |
3718 | ||
1f7cc434 KK |
3719 | bfd_set_section_alignment(stdoutput, sec, align); |
3720 | ||
3721 | } | |
3722 | ||
3723 | static void | |
3724 | ppc_pe_function (ignore) | |
3725 | int ignore; | |
3726 | { | |
3727 | char *name; | |
3728 | char endc; | |
1f7cc434 | 3729 | symbolS *ext_sym; |
1f7cc434 KK |
3730 | |
3731 | name = input_line_pointer; | |
3732 | endc = get_symbol_end (); | |
3733 | ||
1f7cc434 KK |
3734 | ext_sym = symbol_find_or_make (name); |
3735 | ||
3736 | *input_line_pointer = endc; | |
3737 | ||
3738 | S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT); | |
3739 | SF_SET_FUNCTION (ext_sym); | |
3740 | SF_SET_PROCESS (ext_sym); | |
3741 | coff_add_linesym (ext_sym); | |
3742 | ||
3743 | demand_empty_rest_of_line (); | |
3744 | } | |
3745 | ||
ca0bd54f KK |
3746 | static void |
3747 | ppc_pe_tocd (ignore) | |
3748 | int ignore; | |
3749 | { | |
3750 | if (tocdata_section == 0) | |
3751 | { | |
3752 | tocdata_section = subseg_new (".tocd", 0); | |
3753 | /* FIXME: section flags won't work */ | |
3754 | bfd_set_section_flags (stdoutput, tocdata_section, | |
3755 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
3756 | | SEC_READONLY | SEC_DATA )); | |
3757 | ||
3758 | bfd_set_section_alignment (stdoutput, tocdata_section, 2); | |
3759 | } | |
3760 | else | |
3761 | { | |
3762 | rdata_section = subseg_new (".tocd", 0); | |
3763 | } | |
3764 | ||
3765 | ppc_set_current_section(tocdata_section); | |
3766 | ||
3767 | demand_empty_rest_of_line (); | |
3768 | } | |
3769 | ||
11b072f4 ILT |
3770 | /* Don't adjust TOC relocs to use the section symbol. */ |
3771 | ||
3772 | int | |
3773 | ppc_pe_fix_adjustable (fix) | |
3774 | fixS *fix; | |
3775 | { | |
3776 | return fix->fx_r_type != BFD_RELOC_PPC_TOC16; | |
3777 | } | |
3778 | ||
1f7cc434 | 3779 | #endif |
882bdc69 | 3780 | \f |
18c9057f | 3781 | #ifdef OBJ_XCOFF |
882bdc69 ILT |
3782 | |
3783 | /* XCOFF specific symbol and file handling. */ | |
3784 | ||
3785 | /* Canonicalize the symbol name. We use the to force the suffix, if | |
3786 | any, to use square brackets, and to be in upper case. */ | |
3787 | ||
3788 | char * | |
3789 | ppc_canonicalize_symbol_name (name) | |
3790 | char *name; | |
3791 | { | |
3792 | char *s; | |
3793 | ||
31751d9d ILT |
3794 | if (ppc_stab_symbol) |
3795 | return name; | |
3796 | ||
882bdc69 ILT |
3797 | for (s = name; *s != '\0' && *s != '{' && *s != '['; s++) |
3798 | ; | |
3799 | if (*s != '\0') | |
3800 | { | |
3801 | char brac; | |
3802 | ||
3803 | if (*s == '[') | |
3804 | brac = ']'; | |
3805 | else | |
3806 | { | |
3807 | *s = '['; | |
3808 | brac = '}'; | |
3809 | } | |
3810 | ||
3811 | for (s++; *s != '\0' && *s != brac; s++) | |
3812 | if (islower (*s)) | |
3813 | *s = toupper (*s); | |
3814 | ||
3815 | if (*s == '\0' || s[1] != '\0') | |
3816 | as_bad ("bad symbol suffix"); | |
3817 | ||
3818 | *s = ']'; | |
3819 | } | |
3820 | ||
3821 | return name; | |
3822 | } | |
3823 | ||
3824 | /* Set the class of a symbol based on the suffix, if any. This is | |
3825 | called whenever a new symbol is created. */ | |
3826 | ||
3827 | void | |
3828 | ppc_symbol_new_hook (sym) | |
3829 | symbolS *sym; | |
3830 | { | |
3831 | const char *s; | |
3832 | ||
3833 | sym->sy_tc.next = NULL; | |
3834 | sym->sy_tc.output = 0; | |
3835 | sym->sy_tc.class = -1; | |
3836 | sym->sy_tc.real_name = NULL; | |
3837 | sym->sy_tc.subseg = 0; | |
3838 | sym->sy_tc.align = 0; | |
3839 | sym->sy_tc.size = NULL; | |
3840 | sym->sy_tc.within = NULL; | |
3841 | ||
31751d9d ILT |
3842 | if (ppc_stab_symbol) |
3843 | return; | |
3844 | ||
882bdc69 ILT |
3845 | s = strchr (S_GET_NAME (sym), '['); |
3846 | if (s == (const char *) NULL) | |
3847 | { | |
3848 | /* There is no suffix. */ | |
3849 | return; | |
3850 | } | |
3851 | ||
3852 | ++s; | |
3853 | ||
3854 | switch (s[0]) | |
3855 | { | |
3856 | case 'B': | |
3857 | if (strcmp (s, "BS]") == 0) | |
3858 | sym->sy_tc.class = XMC_BS; | |
3859 | break; | |
3860 | case 'D': | |
3861 | if (strcmp (s, "DB]") == 0) | |
3862 | sym->sy_tc.class = XMC_DB; | |
3863 | else if (strcmp (s, "DS]") == 0) | |
3864 | sym->sy_tc.class = XMC_DS; | |
3865 | break; | |
3866 | case 'G': | |
3867 | if (strcmp (s, "GL]") == 0) | |
3868 | sym->sy_tc.class = XMC_GL; | |
3869 | break; | |
3870 | case 'P': | |
3871 | if (strcmp (s, "PR]") == 0) | |
3872 | sym->sy_tc.class = XMC_PR; | |
3873 | break; | |
3874 | case 'R': | |
3875 | if (strcmp (s, "RO]") == 0) | |
3876 | sym->sy_tc.class = XMC_RO; | |
3877 | else if (strcmp (s, "RW]") == 0) | |
3878 | sym->sy_tc.class = XMC_RW; | |
3879 | break; | |
3880 | case 'S': | |
3881 | if (strcmp (s, "SV]") == 0) | |
3882 | sym->sy_tc.class = XMC_SV; | |
3883 | break; | |
3884 | case 'T': | |
3885 | if (strcmp (s, "TC]") == 0) | |
3886 | sym->sy_tc.class = XMC_TC; | |
3887 | else if (strcmp (s, "TI]") == 0) | |
3888 | sym->sy_tc.class = XMC_TI; | |
3889 | else if (strcmp (s, "TB]") == 0) | |
3890 | sym->sy_tc.class = XMC_TB; | |
4a6b2f8b | 3891 | else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0) |
882bdc69 ILT |
3892 | sym->sy_tc.class = XMC_TC0; |
3893 | break; | |
3894 | case 'U': | |
3895 | if (strcmp (s, "UA]") == 0) | |
3896 | sym->sy_tc.class = XMC_UA; | |
3897 | else if (strcmp (s, "UC]") == 0) | |
3898 | sym->sy_tc.class = XMC_UC; | |
3899 | break; | |
3900 | case 'X': | |
3901 | if (strcmp (s, "XO]") == 0) | |
3902 | sym->sy_tc.class = XMC_XO; | |
3903 | break; | |
3904 | } | |
3905 | ||
3906 | if (sym->sy_tc.class == -1) | |
3907 | as_bad ("Unrecognized symbol suffix"); | |
3908 | } | |
3909 | ||
3910 | /* Set the class of a label based on where it is defined. This | |
3911 | handles symbols without suffixes. Also, move the symbol so that it | |
3912 | follows the csect symbol. */ | |
3913 | ||
3914 | void | |
3915 | ppc_frob_label (sym) | |
3916 | symbolS *sym; | |
3917 | { | |
3918 | if (ppc_current_csect != (symbolS *) NULL) | |
3919 | { | |
3920 | if (sym->sy_tc.class == -1) | |
3921 | sym->sy_tc.class = ppc_current_csect->sy_tc.class; | |
3922 | ||
3923 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
3924 | symbol_append (sym, ppc_current_csect->sy_tc.within, &symbol_rootP, | |
3925 | &symbol_lastP); | |
3926 | ppc_current_csect->sy_tc.within = sym; | |
3927 | } | |
3928 | } | |
3929 | ||
df72d2a5 ILT |
3930 | /* This variable is set by ppc_frob_symbol if any absolute symbols are |
3931 | seen. It tells ppc_adjust_symtab whether it needs to look through | |
3932 | the symbols. */ | |
3933 | ||
3934 | static boolean ppc_saw_abs; | |
3935 | ||
882bdc69 ILT |
3936 | /* Change the name of a symbol just before writing it out. Set the |
3937 | real name if the .rename pseudo-op was used. Otherwise, remove any | |
3938 | class suffix. Return 1 if the symbol should not be included in the | |
3939 | symbol table. */ | |
3940 | ||
3941 | int | |
3942 | ppc_frob_symbol (sym) | |
3943 | symbolS *sym; | |
3944 | { | |
3945 | static symbolS *ppc_last_function; | |
3946 | static symbolS *set_end; | |
3947 | ||
3948 | /* Discard symbols that should not be included in the output symbol | |
3949 | table. */ | |
3950 | if (! sym->sy_used_in_reloc | |
3951 | && ((sym->bsym->flags & BSF_SECTION_SYM) != 0 | |
3952 | || (! S_IS_EXTERNAL (sym) | |
3953 | && ! sym->sy_tc.output | |
3954 | && S_GET_STORAGE_CLASS (sym) != C_FILE))) | |
3955 | return 1; | |
3956 | ||
3957 | if (sym->sy_tc.real_name != (char *) NULL) | |
3958 | S_SET_NAME (sym, sym->sy_tc.real_name); | |
3959 | else | |
3960 | { | |
3961 | const char *name; | |
3962 | const char *s; | |
3963 | ||
3964 | name = S_GET_NAME (sym); | |
3965 | s = strchr (name, '['); | |
3966 | if (s != (char *) NULL) | |
3967 | { | |
3968 | unsigned int len; | |
3969 | char *snew; | |
3970 | ||
3971 | len = s - name; | |
3972 | snew = xmalloc (len + 1); | |
3973 | memcpy (snew, name, len); | |
3974 | snew[len] = '\0'; | |
3975 | ||
3976 | S_SET_NAME (sym, snew); | |
3977 | } | |
3978 | } | |
3979 | ||
3980 | if (set_end != (symbolS *) NULL) | |
3981 | { | |
3982 | SA_SET_SYM_ENDNDX (set_end, sym); | |
3983 | set_end = NULL; | |
3984 | } | |
3985 | ||
3986 | if (SF_GET_FUNCTION (sym)) | |
3987 | { | |
3988 | if (ppc_last_function != (symbolS *) NULL) | |
f8a011cf | 3989 | as_bad ("two .function pseudo-ops with no intervening .ef"); |
882bdc69 ILT |
3990 | ppc_last_function = sym; |
3991 | if (sym->sy_tc.size != (symbolS *) NULL) | |
3992 | { | |
3993 | resolve_symbol_value (sym->sy_tc.size); | |
3994 | SA_SET_SYM_FSIZE (sym, (long) S_GET_VALUE (sym->sy_tc.size)); | |
3995 | } | |
3996 | } | |
3997 | else if (S_GET_STORAGE_CLASS (sym) == C_FCN | |
3998 | && strcmp (S_GET_NAME (sym), ".ef") == 0) | |
3999 | { | |
4000 | if (ppc_last_function == (symbolS *) NULL) | |
f8a011cf | 4001 | as_bad (".ef with no preceding .function"); |
882bdc69 ILT |
4002 | else |
4003 | { | |
4004 | set_end = ppc_last_function; | |
4005 | ppc_last_function = NULL; | |
4006 | ||
4007 | /* We don't have a C_EFCN symbol, but we need to force the | |
4008 | COFF backend to believe that it has seen one. */ | |
4009 | coff_last_function = NULL; | |
4010 | } | |
4011 | } | |
4012 | ||
4013 | if (! S_IS_EXTERNAL (sym) | |
4014 | && (sym->bsym->flags & BSF_SECTION_SYM) == 0 | |
4015 | && S_GET_STORAGE_CLASS (sym) != C_FILE | |
4016 | && S_GET_STORAGE_CLASS (sym) != C_FCN | |
7ab1edc8 | 4017 | && S_GET_STORAGE_CLASS (sym) != C_BLOCK |
882bdc69 ILT |
4018 | && S_GET_STORAGE_CLASS (sym) != C_BSTAT |
4019 | && S_GET_STORAGE_CLASS (sym) != C_ESTAT | |
4c2935f4 MM |
4020 | && S_GET_STORAGE_CLASS (sym) != C_BINCL |
4021 | && S_GET_STORAGE_CLASS (sym) != C_EINCL | |
882bdc69 ILT |
4022 | && S_GET_SEGMENT (sym) != ppc_coff_debug_section) |
4023 | S_SET_STORAGE_CLASS (sym, C_HIDEXT); | |
4024 | ||
df72d2a5 ILT |
4025 | if (S_GET_STORAGE_CLASS (sym) == C_EXT |
4026 | || S_GET_STORAGE_CLASS (sym) == C_HIDEXT) | |
882bdc69 ILT |
4027 | { |
4028 | int i; | |
4029 | union internal_auxent *a; | |
4030 | ||
4031 | /* Create a csect aux. */ | |
4032 | i = S_GET_NUMBER_AUXILIARY (sym); | |
4033 | S_SET_NUMBER_AUXILIARY (sym, i + 1); | |
4034 | a = &coffsymbol (sym->bsym)->native[i + 1].u.auxent; | |
4035 | if (sym->sy_tc.class == XMC_TC0) | |
4036 | { | |
4037 | /* This is the TOC table. */ | |
4038 | know (strcmp (S_GET_NAME (sym), "TOC") == 0); | |
4039 | a->x_csect.x_scnlen.l = 0; | |
4040 | a->x_csect.x_smtyp = (2 << 3) | XTY_SD; | |
4041 | } | |
4042 | else if (sym->sy_tc.subseg != 0) | |
4043 | { | |
4044 | /* This is a csect symbol. x_scnlen is the size of the | |
4045 | csect. */ | |
4046 | if (sym->sy_tc.next == (symbolS *) NULL) | |
4047 | a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput, | |
4048 | S_GET_SEGMENT (sym)) | |
4049 | - S_GET_VALUE (sym)); | |
4050 | else | |
4051 | { | |
4052 | resolve_symbol_value (sym->sy_tc.next); | |
4053 | a->x_csect.x_scnlen.l = (S_GET_VALUE (sym->sy_tc.next) | |
4054 | - S_GET_VALUE (sym)); | |
4055 | } | |
4056 | a->x_csect.x_smtyp = (sym->sy_tc.align << 3) | XTY_SD; | |
4057 | } | |
4058 | else if (S_GET_SEGMENT (sym) == bss_section) | |
4059 | { | |
4060 | /* This is a common symbol. */ | |
4061 | a->x_csect.x_scnlen.l = sym->sy_frag->fr_offset; | |
4062 | a->x_csect.x_smtyp = (sym->sy_tc.align << 3) | XTY_CM; | |
4063 | if (S_IS_EXTERNAL (sym)) | |
4064 | sym->sy_tc.class = XMC_RW; | |
4065 | else | |
4066 | sym->sy_tc.class = XMC_BS; | |
4067 | } | |
df72d2a5 ILT |
4068 | else if (S_GET_SEGMENT (sym) == absolute_section) |
4069 | { | |
4070 | /* This is an absolute symbol. The csect will be created by | |
4071 | ppc_adjust_symtab. */ | |
4072 | ppc_saw_abs = true; | |
4073 | a->x_csect.x_smtyp = XTY_LD; | |
4074 | if (sym->sy_tc.class == -1) | |
4075 | sym->sy_tc.class = XMC_XO; | |
4076 | } | |
882bdc69 ILT |
4077 | else if (! S_IS_DEFINED (sym)) |
4078 | { | |
4079 | /* This is an external symbol. */ | |
4080 | a->x_csect.x_scnlen.l = 0; | |
4081 | a->x_csect.x_smtyp = XTY_ER; | |
4082 | } | |
4083 | else if (sym->sy_tc.class == XMC_TC) | |
4084 | { | |
4085 | symbolS *next; | |
4086 | ||
4087 | /* This is a TOC definition. x_scnlen is the size of the | |
4088 | TOC entry. */ | |
4089 | next = symbol_next (sym); | |
4090 | while (next->sy_tc.class == XMC_TC0) | |
4091 | next = symbol_next (next); | |
4092 | if (next == (symbolS *) NULL | |
4093 | || next->sy_tc.class != XMC_TC) | |
4094 | { | |
4095 | if (ppc_after_toc_frag == (fragS *) NULL) | |
4096 | a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput, | |
4097 | data_section) | |
4098 | - S_GET_VALUE (sym)); | |
4099 | else | |
4100 | a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address | |
4101 | - S_GET_VALUE (sym)); | |
4102 | } | |
4103 | else | |
4104 | { | |
4105 | resolve_symbol_value (next); | |
4106 | a->x_csect.x_scnlen.l = (S_GET_VALUE (next) | |
4107 | - S_GET_VALUE (sym)); | |
4108 | } | |
4109 | a->x_csect.x_smtyp = (2 << 3) | XTY_SD; | |
4110 | } | |
4111 | else | |
4112 | { | |
4113 | symbolS *csect; | |
4114 | ||
4115 | /* This is a normal symbol definition. x_scnlen is the | |
4116 | symbol index of the containing csect. */ | |
4117 | if (S_GET_SEGMENT (sym) == text_section) | |
4118 | csect = ppc_text_csects; | |
4119 | else if (S_GET_SEGMENT (sym) == data_section) | |
4120 | csect = ppc_data_csects; | |
4121 | else | |
4122 | abort (); | |
4123 | ||
4124 | /* Skip the initial dummy symbol. */ | |
4125 | csect = csect->sy_tc.next; | |
4126 | ||
4127 | if (csect == (symbolS *) NULL) | |
df72d2a5 ILT |
4128 | { |
4129 | as_warn ("warning: symbol %s has no csect", S_GET_NAME (sym)); | |
4130 | a->x_csect.x_scnlen.l = 0; | |
4131 | } | |
882bdc69 ILT |
4132 | else |
4133 | { | |
4134 | while (csect->sy_tc.next != (symbolS *) NULL) | |
4135 | { | |
4136 | resolve_symbol_value (csect->sy_tc.next); | |
4137 | if (S_GET_VALUE (csect->sy_tc.next) > S_GET_VALUE (sym)) | |
4138 | break; | |
4139 | csect = csect->sy_tc.next; | |
4140 | } | |
4141 | ||
4142 | a->x_csect.x_scnlen.p = coffsymbol (csect->bsym)->native; | |
4143 | coffsymbol (sym->bsym)->native[i + 1].fix_scnlen = 1; | |
4144 | } | |
4145 | a->x_csect.x_smtyp = XTY_LD; | |
4146 | } | |
4147 | ||
4148 | a->x_csect.x_parmhash = 0; | |
4149 | a->x_csect.x_snhash = 0; | |
4150 | if (sym->sy_tc.class == -1) | |
4151 | a->x_csect.x_smclas = XMC_PR; | |
4152 | else | |
4153 | a->x_csect.x_smclas = sym->sy_tc.class; | |
4154 | a->x_csect.x_stab = 0; | |
4155 | a->x_csect.x_snstab = 0; | |
0e3dd9a0 ILT |
4156 | |
4157 | /* Don't let the COFF backend resort these symbols. */ | |
4158 | sym->bsym->flags |= BSF_NOT_AT_END; | |
882bdc69 ILT |
4159 | } |
4160 | else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT) | |
4161 | { | |
4162 | /* We want the value to be the symbol index of the referenced | |
4163 | csect symbol. BFD will do that for us if we set the right | |
4164 | flags. */ | |
4165 | S_SET_VALUE (sym, | |
4166 | (valueT) coffsymbol (sym->sy_tc.within->bsym)->native); | |
4167 | coffsymbol (sym->bsym)->native->fix_value = 1; | |
4168 | } | |
1eeb357e ILT |
4169 | else if (S_GET_STORAGE_CLASS (sym) == C_STSYM) |
4170 | { | |
4171 | symbolS *block; | |
4172 | symbolS *csect; | |
4173 | ||
4174 | /* The value is the offset from the enclosing csect. */ | |
4175 | block = sym->sy_tc.within; | |
4176 | csect = block->sy_tc.within; | |
4177 | resolve_symbol_value (csect); | |
4178 | S_SET_VALUE (sym, S_GET_VALUE (sym) - S_GET_VALUE (csect)); | |
4179 | } | |
4c2935f4 MM |
4180 | else if (S_GET_STORAGE_CLASS (sym) == C_BINCL |
4181 | || S_GET_STORAGE_CLASS (sym) == C_EINCL) | |
4182 | { | |
4183 | /* We want the value to be a file offset into the line numbers. | |
4184 | BFD will do that for us if we set the right flags. We have | |
4185 | already set the value correctly. */ | |
4186 | coffsymbol (sym->bsym)->native->fix_line = 1; | |
4187 | } | |
882bdc69 ILT |
4188 | |
4189 | return 0; | |
4190 | } | |
4191 | ||
df72d2a5 ILT |
4192 | /* Adjust the symbol table. This creates csect symbols for all |
4193 | absolute symbols. */ | |
4194 | ||
4195 | void | |
4196 | ppc_adjust_symtab () | |
4197 | { | |
4198 | symbolS *sym; | |
4199 | ||
4200 | if (! ppc_saw_abs) | |
4201 | return; | |
4202 | ||
4203 | for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym)) | |
4204 | { | |
4205 | symbolS *csect; | |
4206 | int i; | |
4207 | union internal_auxent *a; | |
4208 | ||
4209 | if (S_GET_SEGMENT (sym) != absolute_section) | |
4210 | continue; | |
4211 | ||
4212 | csect = symbol_create (".abs[XO]", absolute_section, | |
4213 | S_GET_VALUE (sym), &zero_address_frag); | |
4214 | csect->bsym->value = S_GET_VALUE (sym); | |
4215 | S_SET_STORAGE_CLASS (csect, C_HIDEXT); | |
4216 | i = S_GET_NUMBER_AUXILIARY (csect); | |
4217 | S_SET_NUMBER_AUXILIARY (csect, i + 1); | |
4218 | a = &coffsymbol (csect->bsym)->native[i + 1].u.auxent; | |
4219 | a->x_csect.x_scnlen.l = 0; | |
4220 | a->x_csect.x_smtyp = XTY_SD; | |
4221 | a->x_csect.x_parmhash = 0; | |
4222 | a->x_csect.x_snhash = 0; | |
4223 | a->x_csect.x_smclas = XMC_XO; | |
4224 | a->x_csect.x_stab = 0; | |
4225 | a->x_csect.x_snstab = 0; | |
4226 | ||
4227 | symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP); | |
4228 | ||
4229 | i = S_GET_NUMBER_AUXILIARY (sym); | |
4230 | a = &coffsymbol (sym->bsym)->native[i].u.auxent; | |
4231 | a->x_csect.x_scnlen.p = coffsymbol (csect->bsym)->native; | |
4232 | coffsymbol (sym->bsym)->native[i].fix_scnlen = 1; | |
4233 | } | |
4234 | ||
4235 | ppc_saw_abs = false; | |
4236 | } | |
4237 | ||
882bdc69 ILT |
4238 | /* Set the VMA for a section. This is called on all the sections in |
4239 | turn. */ | |
4240 | ||
4241 | void | |
4242 | ppc_frob_section (sec) | |
4243 | asection *sec; | |
4244 | { | |
4245 | static bfd_size_type vma = 0; | |
4246 | ||
4247 | bfd_set_section_vma (stdoutput, sec, vma); | |
4248 | vma += bfd_section_size (stdoutput, sec); | |
4249 | } | |
4250 | ||
18c9057f | 4251 | #endif /* OBJ_XCOFF */ |
882bdc69 ILT |
4252 | \f |
4253 | /* Turn a string in input_line_pointer into a floating point constant | |
4254 | of type type, and store the appropriate bytes in *litp. The number | |
4255 | of LITTLENUMS emitted is stored in *sizep . An error message is | |
4256 | returned, or NULL on OK. */ | |
4257 | ||
4258 | char * | |
4259 | md_atof (type, litp, sizep) | |
4260 | int type; | |
4261 | char *litp; | |
4262 | int *sizep; | |
4263 | { | |
4264 | int prec; | |
4265 | LITTLENUM_TYPE words[4]; | |
4266 | char *t; | |
4267 | int i; | |
4268 | ||
4269 | switch (type) | |
4270 | { | |
4271 | case 'f': | |
4272 | prec = 2; | |
4273 | break; | |
4274 | ||
4275 | case 'd': | |
4276 | prec = 4; | |
4277 | break; | |
4278 | ||
4279 | default: | |
4280 | *sizep = 0; | |
4281 | return "bad call to md_atof"; | |
4282 | } | |
4283 | ||
4284 | t = atof_ieee (input_line_pointer, type, words); | |
4285 | if (t) | |
4286 | input_line_pointer = t; | |
4287 | ||
4288 | *sizep = prec * 2; | |
4289 | ||
99146659 | 4290 | if (target_big_endian) |
882bdc69 ILT |
4291 | { |
4292 | for (i = 0; i < prec; i++) | |
4293 | { | |
4294 | md_number_to_chars (litp, (valueT) words[i], 2); | |
4295 | litp += 2; | |
4296 | } | |
4297 | } | |
4298 | else | |
4299 | { | |
4300 | for (i = prec - 1; i >= 0; i--) | |
4301 | { | |
4302 | md_number_to_chars (litp, (valueT) words[i], 2); | |
4303 | litp += 2; | |
4304 | } | |
4305 | } | |
4306 | ||
4307 | return NULL; | |
4308 | } | |
4309 | ||
4310 | /* Write a value out to the object file, using the appropriate | |
4311 | endianness. */ | |
4312 | ||
4313 | void | |
4314 | md_number_to_chars (buf, val, n) | |
4315 | char *buf; | |
4316 | valueT val; | |
4317 | int n; | |
4318 | { | |
99146659 | 4319 | if (target_big_endian) |
882bdc69 ILT |
4320 | number_to_chars_bigendian (buf, val, n); |
4321 | else | |
4322 | number_to_chars_littleendian (buf, val, n); | |
4323 | } | |
4324 | ||
4325 | /* Align a section (I don't know why this is machine dependent). */ | |
4326 | ||
4327 | valueT | |
4328 | md_section_align (seg, addr) | |
4329 | asection *seg; | |
4330 | valueT addr; | |
4331 | { | |
4332 | int align = bfd_get_section_alignment (stdoutput, seg); | |
4333 | ||
4334 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
4335 | } | |
4336 | ||
4337 | /* We don't have any form of relaxing. */ | |
4338 | ||
4339 | int | |
4340 | md_estimate_size_before_relax (fragp, seg) | |
4341 | fragS *fragp; | |
4342 | asection *seg; | |
4343 | { | |
4344 | abort (); | |
18c9057f | 4345 | return 0; |
882bdc69 ILT |
4346 | } |
4347 | ||
882bdc69 ILT |
4348 | /* Convert a machine dependent frag. We never generate these. */ |
4349 | ||
4350 | void | |
4351 | md_convert_frag (abfd, sec, fragp) | |
4352 | bfd *abfd; | |
4353 | asection *sec; | |
4354 | fragS *fragp; | |
4355 | { | |
4356 | abort (); | |
4357 | } | |
4358 | ||
882bdc69 ILT |
4359 | /* We have no need to default values of symbols. */ |
4360 | ||
4361 | /*ARGSUSED*/ | |
4362 | symbolS * | |
4363 | md_undefined_symbol (name) | |
4364 | char *name; | |
4365 | { | |
4366 | return 0; | |
4367 | } | |
4368 | \f | |
4369 | /* Functions concerning relocs. */ | |
4370 | ||
4371 | /* The location from which a PC relative jump should be calculated, | |
4372 | given a PC relative reloc. */ | |
4373 | ||
4374 | long | |
96fe71e1 | 4375 | md_pcrel_from_section (fixp, sec) |
882bdc69 | 4376 | fixS *fixp; |
96fe71e1 | 4377 | segT sec; |
882bdc69 ILT |
4378 | { |
4379 | #ifdef OBJ_ELF | |
4380 | if (fixp->fx_addsy != (symbolS *) NULL | |
65c91be5 | 4381 | && (! S_IS_DEFINED (fixp->fx_addsy) |
96fe71e1 | 4382 | || TC_FORCE_RELOCATION_SECTION (fixp, sec))) |
882bdc69 ILT |
4383 | return 0; |
4384 | #endif | |
4385 | ||
4386 | return fixp->fx_frag->fr_address + fixp->fx_where; | |
4387 | } | |
4388 | ||
18c9057f | 4389 | #ifdef OBJ_XCOFF |
882bdc69 ILT |
4390 | |
4391 | /* This is called to see whether a fixup should be adjusted to use a | |
4392 | section symbol. We take the opportunity to change a fixup against | |
4393 | a symbol in the TOC subsegment into a reloc against the | |
1eeb357e | 4394 | corresponding .tc symbol. */ |
882bdc69 ILT |
4395 | |
4396 | int | |
4397 | ppc_fix_adjustable (fix) | |
4398 | fixS *fix; | |
4399 | { | |
4400 | valueT val; | |
4401 | ||
1eeb357e ILT |
4402 | resolve_symbol_value (fix->fx_addsy); |
4403 | val = S_GET_VALUE (fix->fx_addsy); | |
882bdc69 ILT |
4404 | if (ppc_toc_csect != (symbolS *) NULL |
4405 | && fix->fx_addsy != (symbolS *) NULL | |
4406 | && fix->fx_addsy != ppc_toc_csect | |
4407 | && S_GET_SEGMENT (fix->fx_addsy) == data_section | |
4408 | && val >= ppc_toc_frag->fr_address | |
4409 | && (ppc_after_toc_frag == (fragS *) NULL | |
4410 | || val < ppc_after_toc_frag->fr_address)) | |
4411 | { | |
4412 | symbolS *sy; | |
4413 | ||
4414 | for (sy = symbol_next (ppc_toc_csect); | |
4415 | sy != (symbolS *) NULL; | |
4416 | sy = symbol_next (sy)) | |
4417 | { | |
4418 | if (sy->sy_tc.class == XMC_TC0) | |
4419 | continue; | |
4420 | if (sy->sy_tc.class != XMC_TC) | |
4421 | break; | |
1eeb357e ILT |
4422 | resolve_symbol_value (sy); |
4423 | if (val == S_GET_VALUE (sy)) | |
882bdc69 ILT |
4424 | { |
4425 | fix->fx_addsy = sy; | |
4426 | fix->fx_addnumber = val - ppc_toc_frag->fr_address; | |
4427 | return 0; | |
4428 | } | |
4429 | } | |
4430 | ||
4431 | as_bad_where (fix->fx_file, fix->fx_line, | |
4432 | "symbol in .toc does not match any .tc"); | |
4433 | } | |
4434 | ||
4435 | /* Possibly adjust the reloc to be against the csect. */ | |
4436 | if (fix->fx_addsy != (symbolS *) NULL | |
4437 | && fix->fx_addsy->sy_tc.subseg == 0 | |
4438 | && fix->fx_addsy->sy_tc.class != XMC_TC0 | |
4439 | && fix->fx_addsy->sy_tc.class != XMC_TC | |
4440 | && S_GET_SEGMENT (fix->fx_addsy) != bss_section) | |
4441 | { | |
4442 | symbolS *csect; | |
4443 | ||
4444 | if (S_GET_SEGMENT (fix->fx_addsy) == text_section) | |
4445 | csect = ppc_text_csects; | |
4446 | else if (S_GET_SEGMENT (fix->fx_addsy) == data_section) | |
4447 | csect = ppc_data_csects; | |
4448 | else | |
4449 | abort (); | |
4450 | ||
4451 | /* Skip the initial dummy symbol. */ | |
4452 | csect = csect->sy_tc.next; | |
4453 | ||
4454 | if (csect != (symbolS *) NULL) | |
4455 | { | |
4456 | while (csect->sy_tc.next != (symbolS *) NULL | |
4457 | && (csect->sy_tc.next->sy_frag->fr_address | |
4458 | <= fix->fx_addsy->sy_frag->fr_address)) | |
4459 | csect = csect->sy_tc.next; | |
4460 | ||
4461 | fix->fx_offset += (S_GET_VALUE (fix->fx_addsy) | |
1eeb357e | 4462 | - csect->sy_frag->fr_address); |
882bdc69 ILT |
4463 | fix->fx_addsy = csect; |
4464 | } | |
4465 | } | |
4466 | ||
4467 | /* Adjust a reloc against a .lcomm symbol to be against the base | |
4468 | .lcomm. */ | |
4469 | if (fix->fx_addsy != (symbolS *) NULL | |
4470 | && S_GET_SEGMENT (fix->fx_addsy) == bss_section | |
4471 | && ! S_IS_EXTERNAL (fix->fx_addsy)) | |
4472 | { | |
1eeb357e ILT |
4473 | resolve_symbol_value (fix->fx_addsy->sy_frag->fr_symbol); |
4474 | fix->fx_offset += (S_GET_VALUE (fix->fx_addsy) | |
4475 | - S_GET_VALUE (fix->fx_addsy->sy_frag->fr_symbol)); | |
882bdc69 ILT |
4476 | fix->fx_addsy = fix->fx_addsy->sy_frag->fr_symbol; |
4477 | } | |
4478 | ||
4479 | return 0; | |
4480 | } | |
4481 | ||
f8a011cf MM |
4482 | /* A reloc from one csect to another must be kept. The assembler |
4483 | will, of course, keep relocs between sections, and it will keep | |
4484 | absolute relocs, but we need to force it to keep PC relative relocs | |
4485 | between two csects in the same section. */ | |
4486 | ||
4487 | int | |
4488 | ppc_force_relocation (fix) | |
4489 | fixS *fix; | |
4490 | { | |
4491 | /* At this point fix->fx_addsy should already have been converted to | |
4492 | a csect symbol. If the csect does not include the fragment, then | |
4493 | we need to force the relocation. */ | |
4494 | if (fix->fx_pcrel | |
4495 | && fix->fx_addsy != NULL | |
4496 | && fix->fx_addsy->sy_tc.subseg != 0 | |
4497 | && (fix->fx_addsy->sy_frag->fr_address > fix->fx_frag->fr_address | |
4498 | || (fix->fx_addsy->sy_tc.next != NULL | |
4499 | && (fix->fx_addsy->sy_tc.next->sy_frag->fr_address | |
4500 | <= fix->fx_frag->fr_address)))) | |
4501 | return 1; | |
4502 | ||
4503 | return 0; | |
4504 | } | |
4505 | ||
4506 | #endif /* OBJ_XCOFF */ | |
882bdc69 ILT |
4507 | |
4508 | /* See whether a symbol is in the TOC section. */ | |
4509 | ||
4510 | static int | |
4511 | ppc_is_toc_sym (sym) | |
4512 | symbolS *sym; | |
4513 | { | |
18c9057f | 4514 | #ifdef OBJ_XCOFF |
882bdc69 ILT |
4515 | return sym->sy_tc.class == XMC_TC; |
4516 | #else | |
4517 | return strcmp (segment_name (S_GET_SEGMENT (sym)), ".got") == 0; | |
4518 | #endif | |
4519 | } | |
4520 | ||
4521 | /* Apply a fixup to the object code. This is called for all the | |
4522 | fixups we generated by the call to fix_new_exp, above. In the call | |
4523 | above we used a reloc code which was the largest legal reloc code | |
4524 | plus the operand index. Here we undo that to recover the operand | |
4525 | index. At this point all symbol values should be fully resolved, | |
4526 | and we attempt to completely resolve the reloc. If we can not do | |
4527 | that, we determine the correct reloc code and put it back in the | |
4528 | fixup. */ | |
4529 | ||
4530 | int | |
3f81f3cf | 4531 | md_apply_fix3 (fixp, valuep, seg) |
882bdc69 ILT |
4532 | fixS *fixp; |
4533 | valueT *valuep; | |
3f81f3cf | 4534 | segT seg; |
882bdc69 ILT |
4535 | { |
4536 | valueT value; | |
4537 | ||
4538 | /* FIXME FIXME FIXME: The value we are passed in *valuep includes | |
4539 | the symbol values. Since we are using BFD_ASSEMBLER, if we are | |
4540 | doing this relocation the code in write.c is going to call | |
4541 | bfd_perform_relocation, which is also going to use the symbol | |
4542 | value. That means that if the reloc is fully resolved we want to | |
4543 | use *valuep since bfd_perform_relocation is not being used. | |
4544 | However, if the reloc is not fully resolved we do not want to use | |
4545 | *valuep, and must use fx_offset instead. However, if the reloc | |
4546 | is PC relative, we do want to use *valuep since it includes the | |
4547 | result of md_pcrel_from. This is confusing. */ | |
4548 | ||
4549 | if (fixp->fx_addsy == (symbolS *) NULL) | |
4550 | { | |
4551 | value = *valuep; | |
4552 | fixp->fx_done = 1; | |
4553 | } | |
4554 | else if (fixp->fx_pcrel) | |
4555 | value = *valuep; | |
4556 | else | |
4557 | { | |
4558 | value = fixp->fx_offset; | |
4559 | if (fixp->fx_subsy != (symbolS *) NULL) | |
4560 | { | |
4561 | if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) | |
4562 | value -= S_GET_VALUE (fixp->fx_subsy); | |
4563 | else | |
4564 | { | |
4565 | /* We can't actually support subtracting a symbol. */ | |
4566 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
4567 | "expression too complex"); | |
4568 | } | |
4569 | } | |
4570 | } | |
4571 | ||
4572 | if ((int) fixp->fx_r_type >= (int) BFD_RELOC_UNUSED) | |
4573 | { | |
4574 | int opindex; | |
4575 | const struct powerpc_operand *operand; | |
0e31d0ce MM |
4576 | char *where; |
4577 | unsigned long insn; | |
882bdc69 ILT |
4578 | |
4579 | opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED; | |
4580 | ||
4581 | operand = &powerpc_operands[opindex]; | |
4582 | ||
18c9057f | 4583 | #ifdef OBJ_XCOFF |
1eeb357e ILT |
4584 | /* It appears that an instruction like |
4585 | l 9,LC..1(30) | |
4586 | when LC..1 is not a TOC symbol does not generate a reloc. It | |
4587 | uses the offset of LC..1 within its csect. However, .long | |
4588 | LC..1 will generate a reloc. I can't find any documentation | |
4589 | on how these cases are to be distinguished, so this is a wild | |
4590 | guess. These cases are generated by gcc -mminimal-toc. */ | |
4591 | if ((operand->flags & PPC_OPERAND_PARENS) != 0 | |
4592 | && operand->bits == 16 | |
4593 | && operand->shift == 0 | |
4594 | && operand->insert == NULL | |
4595 | && fixp->fx_addsy != NULL | |
4596 | && fixp->fx_addsy->sy_tc.subseg != 0 | |
4597 | && fixp->fx_addsy->sy_tc.class != XMC_TC | |
4598 | && fixp->fx_addsy->sy_tc.class != XMC_TC0 | |
4599 | && S_GET_SEGMENT (fixp->fx_addsy) != bss_section) | |
4600 | { | |
4601 | value = fixp->fx_offset; | |
4602 | fixp->fx_done = 1; | |
4603 | } | |
4604 | #endif | |
4605 | ||
882bdc69 ILT |
4606 | /* Fetch the instruction, insert the fully resolved operand |
4607 | value, and stuff the instruction back again. */ | |
4608 | where = fixp->fx_frag->fr_literal + fixp->fx_where; | |
99146659 | 4609 | if (target_big_endian) |
882bdc69 ILT |
4610 | insn = bfd_getb32 ((unsigned char *) where); |
4611 | else | |
4612 | insn = bfd_getl32 ((unsigned char *) where); | |
4613 | insn = ppc_insert_operand (insn, operand, (offsetT) value, | |
4614 | fixp->fx_file, fixp->fx_line); | |
99146659 | 4615 | if (target_big_endian) |
882bdc69 ILT |
4616 | bfd_putb32 ((bfd_vma) insn, (unsigned char *) where); |
4617 | else | |
4618 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); | |
4619 | ||
4620 | if (fixp->fx_done) | |
4621 | { | |
4622 | /* Nothing else to do here. */ | |
4623 | return 1; | |
4624 | } | |
4625 | ||
4626 | /* Determine a BFD reloc value based on the operand information. | |
4627 | We are only prepared to turn a few of the operands into | |
4628 | relocs. | |
4629 | FIXME: We need to handle the DS field at the very least. | |
882bdc69 ILT |
4630 | FIXME: Selecting the reloc type is a bit haphazard; perhaps |
4631 | there should be a new field in the operand table. */ | |
4632 | if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 | |
4633 | && operand->bits == 26 | |
4634 | && operand->shift == 0) | |
4635 | fixp->fx_r_type = BFD_RELOC_PPC_B26; | |
4ecbc1ef MM |
4636 | else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 |
4637 | && operand->bits == 16 | |
4638 | && operand->shift == 0) | |
4639 | fixp->fx_r_type = BFD_RELOC_PPC_B16; | |
882bdc69 ILT |
4640 | else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0 |
4641 | && operand->bits == 26 | |
4642 | && operand->shift == 0) | |
4643 | fixp->fx_r_type = BFD_RELOC_PPC_BA26; | |
4ecbc1ef | 4644 | else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0 |
65c91be5 | 4645 | && operand->bits == 16 |
4ecbc1ef MM |
4646 | && operand->shift == 0) |
4647 | fixp->fx_r_type = BFD_RELOC_PPC_BA16; | |
882bdc69 ILT |
4648 | else if ((operand->flags & PPC_OPERAND_PARENS) != 0 |
4649 | && operand->bits == 16 | |
4650 | && operand->shift == 0 | |
4651 | && operand->insert == NULL | |
4652 | && fixp->fx_addsy != NULL | |
4653 | && ppc_is_toc_sym (fixp->fx_addsy)) | |
4654 | { | |
4655 | fixp->fx_size = 2; | |
99146659 | 4656 | if (target_big_endian) |
882bdc69 ILT |
4657 | fixp->fx_where += 2; |
4658 | fixp->fx_r_type = BFD_RELOC_PPC_TOC16; | |
4659 | } | |
4660 | else | |
4661 | { | |
b61802e7 MM |
4662 | char *sfile; |
4663 | unsigned int sline; | |
4664 | ||
4665 | /* Use expr_symbol_where to see if this is an expression | |
4666 | symbol. */ | |
4667 | if (expr_symbol_where (fixp->fx_addsy, &sfile, &sline)) | |
4668 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
4669 | "unresolved expression that must be resolved"); | |
4670 | else | |
4671 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
4672 | "unsupported relocation type"); | |
882bdc69 ILT |
4673 | fixp->fx_done = 1; |
4674 | return 1; | |
4675 | } | |
4676 | } | |
4677 | else | |
4678 | { | |
3f81f3cf MM |
4679 | #ifdef OBJ_ELF |
4680 | ppc_elf_validate_fix (fixp, seg); | |
4681 | #endif | |
882bdc69 ILT |
4682 | switch (fixp->fx_r_type) |
4683 | { | |
0e31d0ce | 4684 | case BFD_RELOC_32: |
840886d8 | 4685 | case BFD_RELOC_CTOR: |
3f81f3cf | 4686 | if (fixp->fx_pcrel) |
77fa4d98 MM |
4687 | fixp->fx_r_type = BFD_RELOC_32_PCREL; |
4688 | /* fall through */ | |
0e31d0ce | 4689 | |
520dd8d5 | 4690 | case BFD_RELOC_RVA: |
0e31d0ce | 4691 | case BFD_RELOC_32_PCREL: |
d971d39e MM |
4692 | case BFD_RELOC_32_BASEREL: |
4693 | case BFD_RELOC_PPC_EMB_NADDR32: | |
0e31d0ce MM |
4694 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where, |
4695 | value, 4); | |
4696 | break; | |
4697 | ||
4698 | case BFD_RELOC_LO16: | |
4699 | case BFD_RELOC_HI16: | |
4700 | case BFD_RELOC_HI16_S: | |
0e31d0ce MM |
4701 | case BFD_RELOC_16: |
4702 | case BFD_RELOC_GPREL16: | |
18c9057f | 4703 | case BFD_RELOC_16_GOT_PCREL: |
f99d287b MM |
4704 | case BFD_RELOC_16_GOTOFF: |
4705 | case BFD_RELOC_LO16_GOTOFF: | |
4706 | case BFD_RELOC_HI16_GOTOFF: | |
4707 | case BFD_RELOC_HI16_S_GOTOFF: | |
d971d39e MM |
4708 | case BFD_RELOC_LO16_BASEREL: |
4709 | case BFD_RELOC_HI16_BASEREL: | |
4710 | case BFD_RELOC_HI16_S_BASEREL: | |
4711 | case BFD_RELOC_PPC_EMB_NADDR16: | |
4712 | case BFD_RELOC_PPC_EMB_NADDR16_LO: | |
4713 | case BFD_RELOC_PPC_EMB_NADDR16_HI: | |
4714 | case BFD_RELOC_PPC_EMB_NADDR16_HA: | |
4715 | case BFD_RELOC_PPC_EMB_SDAI16: | |
d971d39e MM |
4716 | case BFD_RELOC_PPC_EMB_SDA2REL: |
4717 | case BFD_RELOC_PPC_EMB_SDA2I16: | |
4718 | case BFD_RELOC_PPC_EMB_RELSEC16: | |
4719 | case BFD_RELOC_PPC_EMB_RELST_LO: | |
4720 | case BFD_RELOC_PPC_EMB_RELST_HI: | |
4721 | case BFD_RELOC_PPC_EMB_RELST_HA: | |
4722 | case BFD_RELOC_PPC_EMB_RELSDA: | |
f99d287b | 4723 | case BFD_RELOC_PPC_TOC16: |
0e31d0ce | 4724 | if (fixp->fx_pcrel) |
996e146f ILT |
4725 | as_bad_where (fixp->fx_file, fixp->fx_line, |
4726 | "cannot emit PC relative %s relocation%s%s", | |
4727 | bfd_get_reloc_code_name (fixp->fx_r_type), | |
4728 | fixp->fx_addsy != NULL ? " against " : "", | |
4729 | (fixp->fx_addsy != NULL | |
4730 | ? S_GET_NAME (fixp->fx_addsy) | |
4731 | : "")); | |
0e31d0ce MM |
4732 | |
4733 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where, | |
4734 | value, 2); | |
4735 | break; | |
4736 | ||
159e6ef8 MM |
4737 | /* Because SDA21 modifies the register field, the size is set to 4 |
4738 | bytes, rather than 2, so offset it here appropriately */ | |
4739 | case BFD_RELOC_PPC_EMB_SDA21: | |
4740 | if (fixp->fx_pcrel) | |
4741 | abort (); | |
4742 | ||
4743 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where | |
4744 | + ((target_big_endian) ? 2 : 0), | |
4745 | value, 2); | |
4746 | break; | |
4747 | ||
0e31d0ce MM |
4748 | case BFD_RELOC_8: |
4749 | if (fixp->fx_pcrel) | |
4750 | abort (); | |
4751 | ||
4752 | md_number_to_chars (fixp->fx_frag->fr_literal + fixp->fx_where, | |
4753 | value, 1); | |
4754 | break; | |
4755 | ||
fbd929fd | 4756 | case BFD_RELOC_24_PLT_PCREL: |
b61802e7 MM |
4757 | case BFD_RELOC_PPC_LOCAL24PC: |
4758 | if (!fixp->fx_pcrel) | |
4759 | abort (); | |
4760 | ||
4761 | break; | |
4762 | ||
0e31d0ce | 4763 | default: |
520dd8d5 ILT |
4764 | fprintf(stderr, |
4765 | "Gas failure, reloc value %d\n", fixp->fx_r_type); | |
4766 | fflush(stderr); | |
0e31d0ce | 4767 | abort (); |
4ecbc1ef | 4768 | } |
882bdc69 ILT |
4769 | } |
4770 | ||
4771 | #ifdef OBJ_ELF | |
4772 | fixp->fx_addnumber = value; | |
4773 | #else | |
4774 | if (fixp->fx_r_type != BFD_RELOC_PPC_TOC16) | |
4775 | fixp->fx_addnumber = 0; | |
4776 | else | |
4777 | { | |
1f7cc434 KK |
4778 | #ifdef TE_PE |
4779 | fixp->fx_addnumber = 0; | |
4780 | #else | |
882bdc69 ILT |
4781 | /* We want to use the offset within the data segment of the |
4782 | symbol, not the actual VMA of the symbol. */ | |
4783 | fixp->fx_addnumber = | |
4784 | - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixp->fx_addsy)); | |
1f7cc434 | 4785 | #endif |
882bdc69 ILT |
4786 | } |
4787 | #endif | |
4788 | ||
4789 | return 1; | |
4790 | } | |
4791 | ||
4792 | /* Generate a reloc for a fixup. */ | |
4793 | ||
4794 | arelent * | |
4795 | tc_gen_reloc (seg, fixp) | |
4796 | asection *seg; | |
4797 | fixS *fixp; | |
4798 | { | |
4799 | arelent *reloc; | |
4800 | ||
4801 | reloc = (arelent *) bfd_alloc_by_size_t (stdoutput, sizeof (arelent)); | |
4802 | ||
4803 | reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym; | |
4804 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
4805 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
4806 | if (reloc->howto == (reloc_howto_type *) NULL) | |
4807 | { | |
4808 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
4a6b2f8b | 4809 | "reloc %d not supported by object file format", (int)fixp->fx_r_type); |
882bdc69 ILT |
4810 | return NULL; |
4811 | } | |
4812 | reloc->addend = fixp->fx_addnumber; | |
4813 | ||
882bdc69 ILT |
4814 | return reloc; |
4815 | } |