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1 | /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000) | |
2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, | |
3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 | |
4 | Free Software Foundation, Inc. | |
5 | Written by Ian Lance Taylor, Cygnus Support. | |
6 | ||
7 | This file is part of GAS, the GNU Assembler. | |
8 | ||
9 | GAS is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GAS is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GAS; see the file COPYING. If not, write to the Free | |
21 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
22 | 02110-1301, USA. */ | |
23 | ||
24 | #include "as.h" | |
25 | #include "safe-ctype.h" | |
26 | #include "subsegs.h" | |
27 | #include "dw2gencfi.h" | |
28 | #include "opcode/ppc.h" | |
29 | ||
30 | #ifdef OBJ_ELF | |
31 | #include "elf/ppc.h" | |
32 | #include "dwarf2dbg.h" | |
33 | #endif | |
34 | ||
35 | #ifdef TE_PE | |
36 | #include "coff/pe.h" | |
37 | #endif | |
38 | ||
39 | #ifdef OBJ_XCOFF | |
40 | #include "coff/xcoff.h" | |
41 | #include "libxcoff.h" | |
42 | #endif | |
43 | ||
44 | /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */ | |
45 | ||
46 | /* Tell the main code what the endianness is. */ | |
47 | extern int target_big_endian; | |
48 | ||
49 | /* Whether or not, we've set target_big_endian. */ | |
50 | static int set_target_endian = 0; | |
51 | ||
52 | /* Whether to use user friendly register names. */ | |
53 | #ifndef TARGET_REG_NAMES_P | |
54 | #ifdef TE_PE | |
55 | #define TARGET_REG_NAMES_P TRUE | |
56 | #else | |
57 | #define TARGET_REG_NAMES_P FALSE | |
58 | #endif | |
59 | #endif | |
60 | ||
61 | /* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST, | |
62 | HIGHESTA. */ | |
63 | ||
64 | /* #lo(value) denotes the least significant 16 bits of the indicated. */ | |
65 | #define PPC_LO(v) ((v) & 0xffff) | |
66 | ||
67 | /* Split the indicated value with the msbs in bits 11-15 | |
68 | and the lsbs in bits 21-31. */ | |
69 | #define PPC_VLE_SPLIT16A(v) ((v & 0xf800) << 11) | (v & 0x7ff) | |
70 | ||
71 | /* Split the indicated value with the msbs in bits 6-10 | |
72 | and the lsbs in bits 21-31. */ | |
73 | #define PPC_VLE_SPLIT16D(v) ((v & 0xf800) << 5) | (v & 0x7ff) | |
74 | ||
75 | /* #lo(value) denotes the lsb 16 bits in split16a format. */ | |
76 | #define PPC_VLE_LO16A(v) PPC_VLE_SPLIT16A(PPC_LO(v)) | |
77 | ||
78 | /* #lo(value) denotes the lsb 16 bits in split16d format. */ | |
79 | #define PPC_VLE_LO16D(v) PPC_VLE_SPLIT16D(PPC_LO(v)) | |
80 | ||
81 | /* #hi(value) denotes bits 16 through 31 of the indicated value. */ | |
82 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
83 | ||
84 | /* #lo(value) denotes the msb 16 bits in split16a format. */ | |
85 | #define PPC_VLE_HI16A(v) PPC_VLE_SPLIT16A(PPC_HI(v)) | |
86 | ||
87 | /* #lo(value) denotes the msb 16 bits in split16d format. */ | |
88 | #define PPC_VLE_HI16D(v) PPC_VLE_SPLIT16D(PPC_HI(v)) | |
89 | ||
90 | /* #ha(value) denotes the high adjusted value: bits 16 through 31 of | |
91 | the indicated value, compensating for #lo() being treated as a | |
92 | signed number. */ | |
93 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
94 | ||
95 | /* #ha(value) denotes the high adjusted value in split16a format. */ | |
96 | #define PPC_VLE_HA16A(v) PPC_VLE_SPLIT16A(PPC_HA(v)) | |
97 | ||
98 | /* #ha(value) denotes the high adjusted value in split16d format. */ | |
99 | #define PPC_VLE_HA16D(v) PPC_VLE_SPLIT16D(PPC_HA(v)) | |
100 | ||
101 | /* #higher(value) denotes bits 32 through 47 of the indicated value. */ | |
102 | #define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff) | |
103 | ||
104 | /* #highera(value) denotes bits 32 through 47 of the indicated value, | |
105 | compensating for #lo() being treated as a signed number. */ | |
106 | #define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000) | |
107 | ||
108 | /* #highest(value) denotes bits 48 through 63 of the indicated value. */ | |
109 | #define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff) | |
110 | ||
111 | /* #highesta(value) denotes bits 48 through 63 of the indicated value, | |
112 | compensating for #lo being treated as a signed number. */ | |
113 | #define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000) | |
114 | ||
115 | #define SEX16(val) ((((val) & 0xffff) ^ 0x8000) - 0x8000) | |
116 | ||
117 | static bfd_boolean reg_names_p = TARGET_REG_NAMES_P; | |
118 | ||
119 | static void ppc_macro (char *, const struct powerpc_macro *); | |
120 | static void ppc_byte (int); | |
121 | ||
122 | #if defined (OBJ_XCOFF) || defined (OBJ_ELF) | |
123 | static void ppc_tc (int); | |
124 | static void ppc_machine (int); | |
125 | #endif | |
126 | ||
127 | #ifdef OBJ_XCOFF | |
128 | static void ppc_comm (int); | |
129 | static void ppc_bb (int); | |
130 | static void ppc_bc (int); | |
131 | static void ppc_bf (int); | |
132 | static void ppc_biei (int); | |
133 | static void ppc_bs (int); | |
134 | static void ppc_eb (int); | |
135 | static void ppc_ec (int); | |
136 | static void ppc_ef (int); | |
137 | static void ppc_es (int); | |
138 | static void ppc_csect (int); | |
139 | static void ppc_dwsect (int); | |
140 | static void ppc_change_csect (symbolS *, offsetT); | |
141 | static void ppc_function (int); | |
142 | static void ppc_extern (int); | |
143 | static void ppc_lglobl (int); | |
144 | static void ppc_ref (int); | |
145 | static void ppc_section (int); | |
146 | static void ppc_named_section (int); | |
147 | static void ppc_stabx (int); | |
148 | static void ppc_rename (int); | |
149 | static void ppc_toc (int); | |
150 | static void ppc_xcoff_cons (int); | |
151 | static void ppc_vbyte (int); | |
152 | #endif | |
153 | ||
154 | #ifdef OBJ_ELF | |
155 | static void ppc_elf_cons (int); | |
156 | static void ppc_elf_rdata (int); | |
157 | static void ppc_elf_lcomm (int); | |
158 | #endif | |
159 | ||
160 | #ifdef TE_PE | |
161 | static void ppc_previous (int); | |
162 | static void ppc_pdata (int); | |
163 | static void ppc_ydata (int); | |
164 | static void ppc_reldata (int); | |
165 | static void ppc_rdata (int); | |
166 | static void ppc_ualong (int); | |
167 | static void ppc_znop (int); | |
168 | static void ppc_pe_comm (int); | |
169 | static void ppc_pe_section (int); | |
170 | static void ppc_pe_function (int); | |
171 | static void ppc_pe_tocd (int); | |
172 | #endif | |
173 | \f | |
174 | /* Generic assembler global variables which must be defined by all | |
175 | targets. */ | |
176 | ||
177 | #ifdef OBJ_ELF | |
178 | /* This string holds the chars that always start a comment. If the | |
179 | pre-processor is disabled, these aren't very useful. The macro | |
180 | tc_comment_chars points to this. We use this, rather than the | |
181 | usual comment_chars, so that we can switch for Solaris conventions. */ | |
182 | static const char ppc_solaris_comment_chars[] = "#!"; | |
183 | static const char ppc_eabi_comment_chars[] = "#"; | |
184 | ||
185 | #ifdef TARGET_SOLARIS_COMMENT | |
186 | const char *ppc_comment_chars = ppc_solaris_comment_chars; | |
187 | #else | |
188 | const char *ppc_comment_chars = ppc_eabi_comment_chars; | |
189 | #endif | |
190 | #else | |
191 | const char comment_chars[] = "#"; | |
192 | #endif | |
193 | ||
194 | /* Characters which start a comment at the beginning of a line. */ | |
195 | const char line_comment_chars[] = "#"; | |
196 | ||
197 | /* Characters which may be used to separate multiple commands on a | |
198 | single line. */ | |
199 | const char line_separator_chars[] = ";"; | |
200 | ||
201 | /* Characters which are used to indicate an exponent in a floating | |
202 | point number. */ | |
203 | const char EXP_CHARS[] = "eE"; | |
204 | ||
205 | /* Characters which mean that a number is a floating point constant, | |
206 | as in 0d1.0. */ | |
207 | const char FLT_CHARS[] = "dD"; | |
208 | ||
209 | /* Anything that can start an operand needs to be mentioned here, | |
210 | to stop the input scrubber eating whitespace. */ | |
211 | const char ppc_symbol_chars[] = "%["; | |
212 | ||
213 | /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */ | |
214 | int ppc_cie_data_alignment; | |
215 | ||
216 | /* The dwarf2 minimum instruction length. */ | |
217 | int ppc_dwarf2_line_min_insn_length; | |
218 | ||
219 | /* More than this number of nops in an alignment op gets a branch | |
220 | instead. */ | |
221 | unsigned long nop_limit = 4; | |
222 | ||
223 | /* The type of processor we are assembling for. This is one or more | |
224 | of the PPC_OPCODE flags defined in opcode/ppc.h. */ | |
225 | ppc_cpu_t ppc_cpu = 0; | |
226 | ppc_cpu_t sticky = 0; | |
227 | ||
228 | /* Flags set on encountering toc relocs. */ | |
229 | enum { | |
230 | has_large_toc_reloc = 1, | |
231 | has_small_toc_reloc = 2 | |
232 | } toc_reloc_types; | |
233 | \f | |
234 | /* The target specific pseudo-ops which we support. */ | |
235 | ||
236 | const pseudo_typeS md_pseudo_table[] = | |
237 | { | |
238 | /* Pseudo-ops which must be overridden. */ | |
239 | { "byte", ppc_byte, 0 }, | |
240 | ||
241 | #ifdef OBJ_XCOFF | |
242 | /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these | |
243 | legitimately belong in the obj-*.c file. However, XCOFF is based | |
244 | on COFF, and is only implemented for the RS/6000. We just use | |
245 | obj-coff.c, and add what we need here. */ | |
246 | { "comm", ppc_comm, 0 }, | |
247 | { "lcomm", ppc_comm, 1 }, | |
248 | { "bb", ppc_bb, 0 }, | |
249 | { "bc", ppc_bc, 0 }, | |
250 | { "bf", ppc_bf, 0 }, | |
251 | { "bi", ppc_biei, 0 }, | |
252 | { "bs", ppc_bs, 0 }, | |
253 | { "csect", ppc_csect, 0 }, | |
254 | { "dwsect", ppc_dwsect, 0 }, | |
255 | { "data", ppc_section, 'd' }, | |
256 | { "eb", ppc_eb, 0 }, | |
257 | { "ec", ppc_ec, 0 }, | |
258 | { "ef", ppc_ef, 0 }, | |
259 | { "ei", ppc_biei, 1 }, | |
260 | { "es", ppc_es, 0 }, | |
261 | { "extern", ppc_extern, 0 }, | |
262 | { "function", ppc_function, 0 }, | |
263 | { "lglobl", ppc_lglobl, 0 }, | |
264 | { "ref", ppc_ref, 0 }, | |
265 | { "rename", ppc_rename, 0 }, | |
266 | { "section", ppc_named_section, 0 }, | |
267 | { "stabx", ppc_stabx, 0 }, | |
268 | { "text", ppc_section, 't' }, | |
269 | { "toc", ppc_toc, 0 }, | |
270 | { "long", ppc_xcoff_cons, 2 }, | |
271 | { "llong", ppc_xcoff_cons, 3 }, | |
272 | { "word", ppc_xcoff_cons, 1 }, | |
273 | { "short", ppc_xcoff_cons, 1 }, | |
274 | { "vbyte", ppc_vbyte, 0 }, | |
275 | #endif | |
276 | ||
277 | #ifdef OBJ_ELF | |
278 | { "llong", ppc_elf_cons, 8 }, | |
279 | { "quad", ppc_elf_cons, 8 }, | |
280 | { "long", ppc_elf_cons, 4 }, | |
281 | { "word", ppc_elf_cons, 2 }, | |
282 | { "short", ppc_elf_cons, 2 }, | |
283 | { "rdata", ppc_elf_rdata, 0 }, | |
284 | { "rodata", ppc_elf_rdata, 0 }, | |
285 | { "lcomm", ppc_elf_lcomm, 0 }, | |
286 | #endif | |
287 | ||
288 | #ifdef TE_PE | |
289 | /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */ | |
290 | { "previous", ppc_previous, 0 }, | |
291 | { "pdata", ppc_pdata, 0 }, | |
292 | { "ydata", ppc_ydata, 0 }, | |
293 | { "reldata", ppc_reldata, 0 }, | |
294 | { "rdata", ppc_rdata, 0 }, | |
295 | { "ualong", ppc_ualong, 0 }, | |
296 | { "znop", ppc_znop, 0 }, | |
297 | { "comm", ppc_pe_comm, 0 }, | |
298 | { "lcomm", ppc_pe_comm, 1 }, | |
299 | { "section", ppc_pe_section, 0 }, | |
300 | { "function", ppc_pe_function,0 }, | |
301 | { "tocd", ppc_pe_tocd, 0 }, | |
302 | #endif | |
303 | ||
304 | #if defined (OBJ_XCOFF) || defined (OBJ_ELF) | |
305 | { "tc", ppc_tc, 0 }, | |
306 | { "machine", ppc_machine, 0 }, | |
307 | #endif | |
308 | ||
309 | { NULL, NULL, 0 } | |
310 | }; | |
311 | ||
312 | \f | |
313 | /* Predefined register names if -mregnames (or default for Windows NT). | |
314 | In general, there are lots of them, in an attempt to be compatible | |
315 | with a number of other Windows NT assemblers. */ | |
316 | ||
317 | /* Structure to hold information about predefined registers. */ | |
318 | struct pd_reg | |
319 | { | |
320 | char *name; | |
321 | int value; | |
322 | }; | |
323 | ||
324 | /* List of registers that are pre-defined: | |
325 | ||
326 | Each general register has predefined names of the form: | |
327 | 1. r<reg_num> which has the value <reg_num>. | |
328 | 2. r.<reg_num> which has the value <reg_num>. | |
329 | ||
330 | Each floating point register has predefined names of the form: | |
331 | 1. f<reg_num> which has the value <reg_num>. | |
332 | 2. f.<reg_num> which has the value <reg_num>. | |
333 | ||
334 | Each vector unit register has predefined names of the form: | |
335 | 1. v<reg_num> which has the value <reg_num>. | |
336 | 2. v.<reg_num> which has the value <reg_num>. | |
337 | ||
338 | Each condition register has predefined names of the form: | |
339 | 1. cr<reg_num> which has the value <reg_num>. | |
340 | 2. cr.<reg_num> which has the value <reg_num>. | |
341 | ||
342 | There are individual registers as well: | |
343 | sp or r.sp has the value 1 | |
344 | rtoc or r.toc has the value 2 | |
345 | fpscr has the value 0 | |
346 | xer has the value 1 | |
347 | lr has the value 8 | |
348 | ctr has the value 9 | |
349 | pmr has the value 0 | |
350 | dar has the value 19 | |
351 | dsisr has the value 18 | |
352 | dec has the value 22 | |
353 | sdr1 has the value 25 | |
354 | srr0 has the value 26 | |
355 | srr1 has the value 27 | |
356 | ||
357 | The table is sorted. Suitable for searching by a binary search. */ | |
358 | ||
359 | static const struct pd_reg pre_defined_registers[] = | |
360 | { | |
361 | { "cr.0", 0 }, /* Condition Registers */ | |
362 | { "cr.1", 1 }, | |
363 | { "cr.2", 2 }, | |
364 | { "cr.3", 3 }, | |
365 | { "cr.4", 4 }, | |
366 | { "cr.5", 5 }, | |
367 | { "cr.6", 6 }, | |
368 | { "cr.7", 7 }, | |
369 | ||
370 | { "cr0", 0 }, | |
371 | { "cr1", 1 }, | |
372 | { "cr2", 2 }, | |
373 | { "cr3", 3 }, | |
374 | { "cr4", 4 }, | |
375 | { "cr5", 5 }, | |
376 | { "cr6", 6 }, | |
377 | { "cr7", 7 }, | |
378 | ||
379 | { "ctr", 9 }, | |
380 | ||
381 | { "dar", 19 }, /* Data Access Register */ | |
382 | { "dec", 22 }, /* Decrementer */ | |
383 | { "dsisr", 18 }, /* Data Storage Interrupt Status Register */ | |
384 | ||
385 | { "f.0", 0 }, /* Floating point registers */ | |
386 | { "f.1", 1 }, | |
387 | { "f.10", 10 }, | |
388 | { "f.11", 11 }, | |
389 | { "f.12", 12 }, | |
390 | { "f.13", 13 }, | |
391 | { "f.14", 14 }, | |
392 | { "f.15", 15 }, | |
393 | { "f.16", 16 }, | |
394 | { "f.17", 17 }, | |
395 | { "f.18", 18 }, | |
396 | { "f.19", 19 }, | |
397 | { "f.2", 2 }, | |
398 | { "f.20", 20 }, | |
399 | { "f.21", 21 }, | |
400 | { "f.22", 22 }, | |
401 | { "f.23", 23 }, | |
402 | { "f.24", 24 }, | |
403 | { "f.25", 25 }, | |
404 | { "f.26", 26 }, | |
405 | { "f.27", 27 }, | |
406 | { "f.28", 28 }, | |
407 | { "f.29", 29 }, | |
408 | { "f.3", 3 }, | |
409 | { "f.30", 30 }, | |
410 | { "f.31", 31 }, | |
411 | ||
412 | { "f.32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */ | |
413 | { "f.33", 33 }, | |
414 | { "f.34", 34 }, | |
415 | { "f.35", 35 }, | |
416 | { "f.36", 36 }, | |
417 | { "f.37", 37 }, | |
418 | { "f.38", 38 }, | |
419 | { "f.39", 39 }, | |
420 | { "f.4", 4 }, | |
421 | { "f.40", 40 }, | |
422 | { "f.41", 41 }, | |
423 | { "f.42", 42 }, | |
424 | { "f.43", 43 }, | |
425 | { "f.44", 44 }, | |
426 | { "f.45", 45 }, | |
427 | { "f.46", 46 }, | |
428 | { "f.47", 47 }, | |
429 | { "f.48", 48 }, | |
430 | { "f.49", 49 }, | |
431 | { "f.5", 5 }, | |
432 | { "f.50", 50 }, | |
433 | { "f.51", 51 }, | |
434 | { "f.52", 52 }, | |
435 | { "f.53", 53 }, | |
436 | { "f.54", 54 }, | |
437 | { "f.55", 55 }, | |
438 | { "f.56", 56 }, | |
439 | { "f.57", 57 }, | |
440 | { "f.58", 58 }, | |
441 | { "f.59", 59 }, | |
442 | { "f.6", 6 }, | |
443 | { "f.60", 60 }, | |
444 | { "f.61", 61 }, | |
445 | { "f.62", 62 }, | |
446 | { "f.63", 63 }, | |
447 | { "f.7", 7 }, | |
448 | { "f.8", 8 }, | |
449 | { "f.9", 9 }, | |
450 | ||
451 | { "f0", 0 }, | |
452 | { "f1", 1 }, | |
453 | { "f10", 10 }, | |
454 | { "f11", 11 }, | |
455 | { "f12", 12 }, | |
456 | { "f13", 13 }, | |
457 | { "f14", 14 }, | |
458 | { "f15", 15 }, | |
459 | { "f16", 16 }, | |
460 | { "f17", 17 }, | |
461 | { "f18", 18 }, | |
462 | { "f19", 19 }, | |
463 | { "f2", 2 }, | |
464 | { "f20", 20 }, | |
465 | { "f21", 21 }, | |
466 | { "f22", 22 }, | |
467 | { "f23", 23 }, | |
468 | { "f24", 24 }, | |
469 | { "f25", 25 }, | |
470 | { "f26", 26 }, | |
471 | { "f27", 27 }, | |
472 | { "f28", 28 }, | |
473 | { "f29", 29 }, | |
474 | { "f3", 3 }, | |
475 | { "f30", 30 }, | |
476 | { "f31", 31 }, | |
477 | ||
478 | { "f32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */ | |
479 | { "f33", 33 }, | |
480 | { "f34", 34 }, | |
481 | { "f35", 35 }, | |
482 | { "f36", 36 }, | |
483 | { "f37", 37 }, | |
484 | { "f38", 38 }, | |
485 | { "f39", 39 }, | |
486 | { "f4", 4 }, | |
487 | { "f40", 40 }, | |
488 | { "f41", 41 }, | |
489 | { "f42", 42 }, | |
490 | { "f43", 43 }, | |
491 | { "f44", 44 }, | |
492 | { "f45", 45 }, | |
493 | { "f46", 46 }, | |
494 | { "f47", 47 }, | |
495 | { "f48", 48 }, | |
496 | { "f49", 49 }, | |
497 | { "f5", 5 }, | |
498 | { "f50", 50 }, | |
499 | { "f51", 51 }, | |
500 | { "f52", 52 }, | |
501 | { "f53", 53 }, | |
502 | { "f54", 54 }, | |
503 | { "f55", 55 }, | |
504 | { "f56", 56 }, | |
505 | { "f57", 57 }, | |
506 | { "f58", 58 }, | |
507 | { "f59", 59 }, | |
508 | { "f6", 6 }, | |
509 | { "f60", 60 }, | |
510 | { "f61", 61 }, | |
511 | { "f62", 62 }, | |
512 | { "f63", 63 }, | |
513 | { "f7", 7 }, | |
514 | { "f8", 8 }, | |
515 | { "f9", 9 }, | |
516 | ||
517 | { "fpscr", 0 }, | |
518 | ||
519 | /* Quantization registers used with pair single instructions. */ | |
520 | { "gqr.0", 0 }, | |
521 | { "gqr.1", 1 }, | |
522 | { "gqr.2", 2 }, | |
523 | { "gqr.3", 3 }, | |
524 | { "gqr.4", 4 }, | |
525 | { "gqr.5", 5 }, | |
526 | { "gqr.6", 6 }, | |
527 | { "gqr.7", 7 }, | |
528 | { "gqr0", 0 }, | |
529 | { "gqr1", 1 }, | |
530 | { "gqr2", 2 }, | |
531 | { "gqr3", 3 }, | |
532 | { "gqr4", 4 }, | |
533 | { "gqr5", 5 }, | |
534 | { "gqr6", 6 }, | |
535 | { "gqr7", 7 }, | |
536 | ||
537 | { "lr", 8 }, /* Link Register */ | |
538 | ||
539 | { "pmr", 0 }, | |
540 | ||
541 | { "r.0", 0 }, /* General Purpose Registers */ | |
542 | { "r.1", 1 }, | |
543 | { "r.10", 10 }, | |
544 | { "r.11", 11 }, | |
545 | { "r.12", 12 }, | |
546 | { "r.13", 13 }, | |
547 | { "r.14", 14 }, | |
548 | { "r.15", 15 }, | |
549 | { "r.16", 16 }, | |
550 | { "r.17", 17 }, | |
551 | { "r.18", 18 }, | |
552 | { "r.19", 19 }, | |
553 | { "r.2", 2 }, | |
554 | { "r.20", 20 }, | |
555 | { "r.21", 21 }, | |
556 | { "r.22", 22 }, | |
557 | { "r.23", 23 }, | |
558 | { "r.24", 24 }, | |
559 | { "r.25", 25 }, | |
560 | { "r.26", 26 }, | |
561 | { "r.27", 27 }, | |
562 | { "r.28", 28 }, | |
563 | { "r.29", 29 }, | |
564 | { "r.3", 3 }, | |
565 | { "r.30", 30 }, | |
566 | { "r.31", 31 }, | |
567 | { "r.4", 4 }, | |
568 | { "r.5", 5 }, | |
569 | { "r.6", 6 }, | |
570 | { "r.7", 7 }, | |
571 | { "r.8", 8 }, | |
572 | { "r.9", 9 }, | |
573 | ||
574 | { "r.sp", 1 }, /* Stack Pointer */ | |
575 | ||
576 | { "r.toc", 2 }, /* Pointer to the table of contents */ | |
577 | ||
578 | { "r0", 0 }, /* More general purpose registers */ | |
579 | { "r1", 1 }, | |
580 | { "r10", 10 }, | |
581 | { "r11", 11 }, | |
582 | { "r12", 12 }, | |
583 | { "r13", 13 }, | |
584 | { "r14", 14 }, | |
585 | { "r15", 15 }, | |
586 | { "r16", 16 }, | |
587 | { "r17", 17 }, | |
588 | { "r18", 18 }, | |
589 | { "r19", 19 }, | |
590 | { "r2", 2 }, | |
591 | { "r20", 20 }, | |
592 | { "r21", 21 }, | |
593 | { "r22", 22 }, | |
594 | { "r23", 23 }, | |
595 | { "r24", 24 }, | |
596 | { "r25", 25 }, | |
597 | { "r26", 26 }, | |
598 | { "r27", 27 }, | |
599 | { "r28", 28 }, | |
600 | { "r29", 29 }, | |
601 | { "r3", 3 }, | |
602 | { "r30", 30 }, | |
603 | { "r31", 31 }, | |
604 | { "r4", 4 }, | |
605 | { "r5", 5 }, | |
606 | { "r6", 6 }, | |
607 | { "r7", 7 }, | |
608 | { "r8", 8 }, | |
609 | { "r9", 9 }, | |
610 | ||
611 | { "rtoc", 2 }, /* Table of contents */ | |
612 | ||
613 | { "sdr1", 25 }, /* Storage Description Register 1 */ | |
614 | ||
615 | { "sp", 1 }, | |
616 | ||
617 | { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */ | |
618 | { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */ | |
619 | ||
620 | { "v.0", 0 }, /* Vector (Altivec/VMX) registers */ | |
621 | { "v.1", 1 }, | |
622 | { "v.10", 10 }, | |
623 | { "v.11", 11 }, | |
624 | { "v.12", 12 }, | |
625 | { "v.13", 13 }, | |
626 | { "v.14", 14 }, | |
627 | { "v.15", 15 }, | |
628 | { "v.16", 16 }, | |
629 | { "v.17", 17 }, | |
630 | { "v.18", 18 }, | |
631 | { "v.19", 19 }, | |
632 | { "v.2", 2 }, | |
633 | { "v.20", 20 }, | |
634 | { "v.21", 21 }, | |
635 | { "v.22", 22 }, | |
636 | { "v.23", 23 }, | |
637 | { "v.24", 24 }, | |
638 | { "v.25", 25 }, | |
639 | { "v.26", 26 }, | |
640 | { "v.27", 27 }, | |
641 | { "v.28", 28 }, | |
642 | { "v.29", 29 }, | |
643 | { "v.3", 3 }, | |
644 | { "v.30", 30 }, | |
645 | { "v.31", 31 }, | |
646 | { "v.4", 4 }, | |
647 | { "v.5", 5 }, | |
648 | { "v.6", 6 }, | |
649 | { "v.7", 7 }, | |
650 | { "v.8", 8 }, | |
651 | { "v.9", 9 }, | |
652 | ||
653 | { "v0", 0 }, | |
654 | { "v1", 1 }, | |
655 | { "v10", 10 }, | |
656 | { "v11", 11 }, | |
657 | { "v12", 12 }, | |
658 | { "v13", 13 }, | |
659 | { "v14", 14 }, | |
660 | { "v15", 15 }, | |
661 | { "v16", 16 }, | |
662 | { "v17", 17 }, | |
663 | { "v18", 18 }, | |
664 | { "v19", 19 }, | |
665 | { "v2", 2 }, | |
666 | { "v20", 20 }, | |
667 | { "v21", 21 }, | |
668 | { "v22", 22 }, | |
669 | { "v23", 23 }, | |
670 | { "v24", 24 }, | |
671 | { "v25", 25 }, | |
672 | { "v26", 26 }, | |
673 | { "v27", 27 }, | |
674 | { "v28", 28 }, | |
675 | { "v29", 29 }, | |
676 | { "v3", 3 }, | |
677 | { "v30", 30 }, | |
678 | { "v31", 31 }, | |
679 | { "v4", 4 }, | |
680 | { "v5", 5 }, | |
681 | { "v6", 6 }, | |
682 | { "v7", 7 }, | |
683 | { "v8", 8 }, | |
684 | { "v9", 9 }, | |
685 | ||
686 | { "vs.0", 0 }, /* Vector Scalar (VSX) registers (ISA 2.06). */ | |
687 | { "vs.1", 1 }, | |
688 | { "vs.10", 10 }, | |
689 | { "vs.11", 11 }, | |
690 | { "vs.12", 12 }, | |
691 | { "vs.13", 13 }, | |
692 | { "vs.14", 14 }, | |
693 | { "vs.15", 15 }, | |
694 | { "vs.16", 16 }, | |
695 | { "vs.17", 17 }, | |
696 | { "vs.18", 18 }, | |
697 | { "vs.19", 19 }, | |
698 | { "vs.2", 2 }, | |
699 | { "vs.20", 20 }, | |
700 | { "vs.21", 21 }, | |
701 | { "vs.22", 22 }, | |
702 | { "vs.23", 23 }, | |
703 | { "vs.24", 24 }, | |
704 | { "vs.25", 25 }, | |
705 | { "vs.26", 26 }, | |
706 | { "vs.27", 27 }, | |
707 | { "vs.28", 28 }, | |
708 | { "vs.29", 29 }, | |
709 | { "vs.3", 3 }, | |
710 | { "vs.30", 30 }, | |
711 | { "vs.31", 31 }, | |
712 | { "vs.32", 32 }, | |
713 | { "vs.33", 33 }, | |
714 | { "vs.34", 34 }, | |
715 | { "vs.35", 35 }, | |
716 | { "vs.36", 36 }, | |
717 | { "vs.37", 37 }, | |
718 | { "vs.38", 38 }, | |
719 | { "vs.39", 39 }, | |
720 | { "vs.4", 4 }, | |
721 | { "vs.40", 40 }, | |
722 | { "vs.41", 41 }, | |
723 | { "vs.42", 42 }, | |
724 | { "vs.43", 43 }, | |
725 | { "vs.44", 44 }, | |
726 | { "vs.45", 45 }, | |
727 | { "vs.46", 46 }, | |
728 | { "vs.47", 47 }, | |
729 | { "vs.48", 48 }, | |
730 | { "vs.49", 49 }, | |
731 | { "vs.5", 5 }, | |
732 | { "vs.50", 50 }, | |
733 | { "vs.51", 51 }, | |
734 | { "vs.52", 52 }, | |
735 | { "vs.53", 53 }, | |
736 | { "vs.54", 54 }, | |
737 | { "vs.55", 55 }, | |
738 | { "vs.56", 56 }, | |
739 | { "vs.57", 57 }, | |
740 | { "vs.58", 58 }, | |
741 | { "vs.59", 59 }, | |
742 | { "vs.6", 6 }, | |
743 | { "vs.60", 60 }, | |
744 | { "vs.61", 61 }, | |
745 | { "vs.62", 62 }, | |
746 | { "vs.63", 63 }, | |
747 | { "vs.7", 7 }, | |
748 | { "vs.8", 8 }, | |
749 | { "vs.9", 9 }, | |
750 | ||
751 | { "vs0", 0 }, | |
752 | { "vs1", 1 }, | |
753 | { "vs10", 10 }, | |
754 | { "vs11", 11 }, | |
755 | { "vs12", 12 }, | |
756 | { "vs13", 13 }, | |
757 | { "vs14", 14 }, | |
758 | { "vs15", 15 }, | |
759 | { "vs16", 16 }, | |
760 | { "vs17", 17 }, | |
761 | { "vs18", 18 }, | |
762 | { "vs19", 19 }, | |
763 | { "vs2", 2 }, | |
764 | { "vs20", 20 }, | |
765 | { "vs21", 21 }, | |
766 | { "vs22", 22 }, | |
767 | { "vs23", 23 }, | |
768 | { "vs24", 24 }, | |
769 | { "vs25", 25 }, | |
770 | { "vs26", 26 }, | |
771 | { "vs27", 27 }, | |
772 | { "vs28", 28 }, | |
773 | { "vs29", 29 }, | |
774 | { "vs3", 3 }, | |
775 | { "vs30", 30 }, | |
776 | { "vs31", 31 }, | |
777 | { "vs32", 32 }, | |
778 | { "vs33", 33 }, | |
779 | { "vs34", 34 }, | |
780 | { "vs35", 35 }, | |
781 | { "vs36", 36 }, | |
782 | { "vs37", 37 }, | |
783 | { "vs38", 38 }, | |
784 | { "vs39", 39 }, | |
785 | { "vs4", 4 }, | |
786 | { "vs40", 40 }, | |
787 | { "vs41", 41 }, | |
788 | { "vs42", 42 }, | |
789 | { "vs43", 43 }, | |
790 | { "vs44", 44 }, | |
791 | { "vs45", 45 }, | |
792 | { "vs46", 46 }, | |
793 | { "vs47", 47 }, | |
794 | { "vs48", 48 }, | |
795 | { "vs49", 49 }, | |
796 | { "vs5", 5 }, | |
797 | { "vs50", 50 }, | |
798 | { "vs51", 51 }, | |
799 | { "vs52", 52 }, | |
800 | { "vs53", 53 }, | |
801 | { "vs54", 54 }, | |
802 | { "vs55", 55 }, | |
803 | { "vs56", 56 }, | |
804 | { "vs57", 57 }, | |
805 | { "vs58", 58 }, | |
806 | { "vs59", 59 }, | |
807 | { "vs6", 6 }, | |
808 | { "vs60", 60 }, | |
809 | { "vs61", 61 }, | |
810 | { "vs62", 62 }, | |
811 | { "vs63", 63 }, | |
812 | { "vs7", 7 }, | |
813 | { "vs8", 8 }, | |
814 | { "vs9", 9 }, | |
815 | ||
816 | { "xer", 1 }, | |
817 | ||
818 | }; | |
819 | ||
820 | #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg)) | |
821 | ||
822 | /* Given NAME, find the register number associated with that name, return | |
823 | the integer value associated with the given name or -1 on failure. */ | |
824 | ||
825 | static int | |
826 | reg_name_search (const struct pd_reg *regs, int regcount, const char *name) | |
827 | { | |
828 | int middle, low, high; | |
829 | int cmp; | |
830 | ||
831 | low = 0; | |
832 | high = regcount - 1; | |
833 | ||
834 | do | |
835 | { | |
836 | middle = (low + high) / 2; | |
837 | cmp = strcasecmp (name, regs[middle].name); | |
838 | if (cmp < 0) | |
839 | high = middle - 1; | |
840 | else if (cmp > 0) | |
841 | low = middle + 1; | |
842 | else | |
843 | return regs[middle].value; | |
844 | } | |
845 | while (low <= high); | |
846 | ||
847 | return -1; | |
848 | } | |
849 | ||
850 | /* | |
851 | * Summary of register_name. | |
852 | * | |
853 | * in: Input_line_pointer points to 1st char of operand. | |
854 | * | |
855 | * out: A expressionS. | |
856 | * The operand may have been a register: in this case, X_op == O_register, | |
857 | * X_add_number is set to the register number, and truth is returned. | |
858 | * Input_line_pointer->(next non-blank) char after operand, or is in its | |
859 | * original state. | |
860 | */ | |
861 | ||
862 | static bfd_boolean | |
863 | register_name (expressionS *expressionP) | |
864 | { | |
865 | int reg_number; | |
866 | char *name; | |
867 | char *start; | |
868 | char c; | |
869 | ||
870 | /* Find the spelling of the operand. */ | |
871 | start = name = input_line_pointer; | |
872 | if (name[0] == '%' && ISALPHA (name[1])) | |
873 | name = ++input_line_pointer; | |
874 | ||
875 | else if (!reg_names_p || !ISALPHA (name[0])) | |
876 | return FALSE; | |
877 | ||
878 | c = get_symbol_end (); | |
879 | reg_number = reg_name_search (pre_defined_registers, REG_NAME_CNT, name); | |
880 | ||
881 | /* Put back the delimiting char. */ | |
882 | *input_line_pointer = c; | |
883 | ||
884 | /* Look to see if it's in the register table. */ | |
885 | if (reg_number >= 0) | |
886 | { | |
887 | expressionP->X_op = O_register; | |
888 | expressionP->X_add_number = reg_number; | |
889 | ||
890 | /* Make the rest nice. */ | |
891 | expressionP->X_add_symbol = NULL; | |
892 | expressionP->X_op_symbol = NULL; | |
893 | return TRUE; | |
894 | } | |
895 | ||
896 | /* Reset the line as if we had not done anything. */ | |
897 | input_line_pointer = start; | |
898 | return FALSE; | |
899 | } | |
900 | \f | |
901 | /* This function is called for each symbol seen in an expression. It | |
902 | handles the special parsing which PowerPC assemblers are supposed | |
903 | to use for condition codes. */ | |
904 | ||
905 | /* Whether to do the special parsing. */ | |
906 | static bfd_boolean cr_operand; | |
907 | ||
908 | /* Names to recognize in a condition code. This table is sorted. */ | |
909 | static const struct pd_reg cr_names[] = | |
910 | { | |
911 | { "cr0", 0 }, | |
912 | { "cr1", 1 }, | |
913 | { "cr2", 2 }, | |
914 | { "cr3", 3 }, | |
915 | { "cr4", 4 }, | |
916 | { "cr5", 5 }, | |
917 | { "cr6", 6 }, | |
918 | { "cr7", 7 }, | |
919 | { "eq", 2 }, | |
920 | { "gt", 1 }, | |
921 | { "lt", 0 }, | |
922 | { "so", 3 }, | |
923 | { "un", 3 } | |
924 | }; | |
925 | ||
926 | /* Parsing function. This returns non-zero if it recognized an | |
927 | expression. */ | |
928 | ||
929 | int | |
930 | ppc_parse_name (const char *name, expressionS *exp) | |
931 | { | |
932 | int val; | |
933 | ||
934 | if (! cr_operand) | |
935 | return 0; | |
936 | ||
937 | if (*name == '%') | |
938 | ++name; | |
939 | val = reg_name_search (cr_names, sizeof cr_names / sizeof cr_names[0], | |
940 | name); | |
941 | if (val < 0) | |
942 | return 0; | |
943 | ||
944 | exp->X_op = O_constant; | |
945 | exp->X_add_number = val; | |
946 | ||
947 | return 1; | |
948 | } | |
949 | \f | |
950 | /* Local variables. */ | |
951 | ||
952 | /* Whether to target xcoff64/elf64. */ | |
953 | static unsigned int ppc_obj64 = BFD_DEFAULT_TARGET_SIZE == 64; | |
954 | ||
955 | /* Opcode hash table. */ | |
956 | static struct hash_control *ppc_hash; | |
957 | ||
958 | /* Macro hash table. */ | |
959 | static struct hash_control *ppc_macro_hash; | |
960 | ||
961 | #ifdef OBJ_ELF | |
962 | /* What type of shared library support to use. */ | |
963 | static enum { SHLIB_NONE, SHLIB_PIC, SHLIB_MRELOCATABLE } shlib = SHLIB_NONE; | |
964 | ||
965 | /* Flags to set in the elf header. */ | |
966 | static flagword ppc_flags = 0; | |
967 | ||
968 | /* Whether this is Solaris or not. */ | |
969 | #ifdef TARGET_SOLARIS_COMMENT | |
970 | #define SOLARIS_P TRUE | |
971 | #else | |
972 | #define SOLARIS_P FALSE | |
973 | #endif | |
974 | ||
975 | static bfd_boolean msolaris = SOLARIS_P; | |
976 | #endif | |
977 | ||
978 | #ifdef OBJ_XCOFF | |
979 | ||
980 | /* The RS/6000 assembler uses the .csect pseudo-op to generate code | |
981 | using a bunch of different sections. These assembler sections, | |
982 | however, are all encompassed within the .text or .data sections of | |
983 | the final output file. We handle this by using different | |
984 | subsegments within these main segments. */ | |
985 | ||
986 | /* Next subsegment to allocate within the .text segment. */ | |
987 | static subsegT ppc_text_subsegment = 2; | |
988 | ||
989 | /* Linked list of csects in the text section. */ | |
990 | static symbolS *ppc_text_csects; | |
991 | ||
992 | /* Next subsegment to allocate within the .data segment. */ | |
993 | static subsegT ppc_data_subsegment = 2; | |
994 | ||
995 | /* Linked list of csects in the data section. */ | |
996 | static symbolS *ppc_data_csects; | |
997 | ||
998 | /* The current csect. */ | |
999 | static symbolS *ppc_current_csect; | |
1000 | ||
1001 | /* The RS/6000 assembler uses a TOC which holds addresses of functions | |
1002 | and variables. Symbols are put in the TOC with the .tc pseudo-op. | |
1003 | A special relocation is used when accessing TOC entries. We handle | |
1004 | the TOC as a subsegment within the .data segment. We set it up if | |
1005 | we see a .toc pseudo-op, and save the csect symbol here. */ | |
1006 | static symbolS *ppc_toc_csect; | |
1007 | ||
1008 | /* The first frag in the TOC subsegment. */ | |
1009 | static fragS *ppc_toc_frag; | |
1010 | ||
1011 | /* The first frag in the first subsegment after the TOC in the .data | |
1012 | segment. NULL if there are no subsegments after the TOC. */ | |
1013 | static fragS *ppc_after_toc_frag; | |
1014 | ||
1015 | /* The current static block. */ | |
1016 | static symbolS *ppc_current_block; | |
1017 | ||
1018 | /* The COFF debugging section; set by md_begin. This is not the | |
1019 | .debug section, but is instead the secret BFD section which will | |
1020 | cause BFD to set the section number of a symbol to N_DEBUG. */ | |
1021 | static asection *ppc_coff_debug_section; | |
1022 | ||
1023 | /* Structure to set the length field of the dwarf sections. */ | |
1024 | struct dw_subsection { | |
1025 | /* Subsections are simply linked. */ | |
1026 | struct dw_subsection *link; | |
1027 | ||
1028 | /* The subsection number. */ | |
1029 | subsegT subseg; | |
1030 | ||
1031 | /* Expression to compute the length of the section. */ | |
1032 | expressionS end_exp; | |
1033 | }; | |
1034 | ||
1035 | static struct dw_section { | |
1036 | /* Corresponding section. */ | |
1037 | segT sect; | |
1038 | ||
1039 | /* Simply linked list of subsections with a label. */ | |
1040 | struct dw_subsection *list_subseg; | |
1041 | ||
1042 | /* The anonymous subsection. */ | |
1043 | struct dw_subsection *anon_subseg; | |
1044 | } dw_sections[XCOFF_DWSECT_NBR_NAMES]; | |
1045 | #endif /* OBJ_XCOFF */ | |
1046 | ||
1047 | #ifdef TE_PE | |
1048 | ||
1049 | /* Various sections that we need for PE coff support. */ | |
1050 | static segT ydata_section; | |
1051 | static segT pdata_section; | |
1052 | static segT reldata_section; | |
1053 | static segT rdata_section; | |
1054 | static segT tocdata_section; | |
1055 | ||
1056 | /* The current section and the previous section. See ppc_previous. */ | |
1057 | static segT ppc_previous_section; | |
1058 | static segT ppc_current_section; | |
1059 | ||
1060 | #endif /* TE_PE */ | |
1061 | ||
1062 | #ifdef OBJ_ELF | |
1063 | symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */ | |
1064 | #define PPC_APUINFO_ISEL 0x40 | |
1065 | #define PPC_APUINFO_PMR 0x41 | |
1066 | #define PPC_APUINFO_RFMCI 0x42 | |
1067 | #define PPC_APUINFO_CACHELCK 0x43 | |
1068 | #define PPC_APUINFO_SPE 0x100 | |
1069 | #define PPC_APUINFO_EFS 0x101 | |
1070 | #define PPC_APUINFO_BRLOCK 0x102 | |
1071 | #define PPC_APUINFO_VLE 0x104 | |
1072 | ||
1073 | /* | |
1074 | * We keep a list of APUinfo | |
1075 | */ | |
1076 | unsigned long *ppc_apuinfo_list; | |
1077 | unsigned int ppc_apuinfo_num; | |
1078 | unsigned int ppc_apuinfo_num_alloc; | |
1079 | #endif /* OBJ_ELF */ | |
1080 | \f | |
1081 | #ifdef OBJ_ELF | |
1082 | const char *const md_shortopts = "b:l:usm:K:VQ:"; | |
1083 | #else | |
1084 | const char *const md_shortopts = "um:"; | |
1085 | #endif | |
1086 | #define OPTION_NOPS (OPTION_MD_BASE + 0) | |
1087 | const struct option md_longopts[] = { | |
1088 | {"nops", required_argument, NULL, OPTION_NOPS}, | |
1089 | {NULL, no_argument, NULL, 0} | |
1090 | }; | |
1091 | const size_t md_longopts_size = sizeof (md_longopts); | |
1092 | ||
1093 | int | |
1094 | md_parse_option (int c, char *arg) | |
1095 | { | |
1096 | ppc_cpu_t new_cpu; | |
1097 | ||
1098 | switch (c) | |
1099 | { | |
1100 | case 'u': | |
1101 | /* -u means that any undefined symbols should be treated as | |
1102 | external, which is the default for gas anyhow. */ | |
1103 | break; | |
1104 | ||
1105 | #ifdef OBJ_ELF | |
1106 | case 'l': | |
1107 | /* Solaris as takes -le (presumably for little endian). For completeness | |
1108 | sake, recognize -be also. */ | |
1109 | if (strcmp (arg, "e") == 0) | |
1110 | { | |
1111 | target_big_endian = 0; | |
1112 | set_target_endian = 1; | |
1113 | if (ppc_cpu & PPC_OPCODE_VLE) | |
1114 | as_bad (_("the use of -mvle requires big endian.")); | |
1115 | } | |
1116 | else | |
1117 | return 0; | |
1118 | ||
1119 | break; | |
1120 | ||
1121 | case 'b': | |
1122 | if (strcmp (arg, "e") == 0) | |
1123 | { | |
1124 | target_big_endian = 1; | |
1125 | set_target_endian = 1; | |
1126 | } | |
1127 | else | |
1128 | return 0; | |
1129 | ||
1130 | break; | |
1131 | ||
1132 | case 'K': | |
1133 | /* Recognize -K PIC. */ | |
1134 | if (strcmp (arg, "PIC") == 0 || strcmp (arg, "pic") == 0) | |
1135 | { | |
1136 | shlib = SHLIB_PIC; | |
1137 | ppc_flags |= EF_PPC_RELOCATABLE_LIB; | |
1138 | } | |
1139 | else | |
1140 | return 0; | |
1141 | ||
1142 | break; | |
1143 | #endif | |
1144 | ||
1145 | /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */ | |
1146 | case 'a': | |
1147 | if (strcmp (arg, "64") == 0) | |
1148 | { | |
1149 | #ifdef BFD64 | |
1150 | ppc_obj64 = 1; | |
1151 | if (ppc_cpu & PPC_OPCODE_VLE) | |
1152 | as_bad (_("the use of -mvle requires -a32.")); | |
1153 | #else | |
1154 | as_fatal (_("%s unsupported"), "-a64"); | |
1155 | #endif | |
1156 | } | |
1157 | else if (strcmp (arg, "32") == 0) | |
1158 | ppc_obj64 = 0; | |
1159 | else | |
1160 | return 0; | |
1161 | break; | |
1162 | ||
1163 | case 'm': | |
1164 | new_cpu = ppc_parse_cpu (ppc_cpu, &sticky, arg); | |
1165 | if (new_cpu != 0) | |
1166 | { | |
1167 | ppc_cpu = new_cpu; | |
1168 | if (strcmp (arg, "vle") == 0) | |
1169 | { | |
1170 | if (set_target_endian && target_big_endian == 0) | |
1171 | as_bad (_("the use of -mvle requires big endian.")); | |
1172 | if (ppc_obj64) | |
1173 | as_bad (_("the use of -mvle requires -a32.")); | |
1174 | } | |
1175 | } | |
1176 | ||
1177 | else if (strcmp (arg, "regnames") == 0) | |
1178 | reg_names_p = TRUE; | |
1179 | ||
1180 | else if (strcmp (arg, "no-regnames") == 0) | |
1181 | reg_names_p = FALSE; | |
1182 | ||
1183 | #ifdef OBJ_ELF | |
1184 | /* -mrelocatable/-mrelocatable-lib -- warn about initializations | |
1185 | that require relocation. */ | |
1186 | else if (strcmp (arg, "relocatable") == 0) | |
1187 | { | |
1188 | shlib = SHLIB_MRELOCATABLE; | |
1189 | ppc_flags |= EF_PPC_RELOCATABLE; | |
1190 | } | |
1191 | ||
1192 | else if (strcmp (arg, "relocatable-lib") == 0) | |
1193 | { | |
1194 | shlib = SHLIB_MRELOCATABLE; | |
1195 | ppc_flags |= EF_PPC_RELOCATABLE_LIB; | |
1196 | } | |
1197 | ||
1198 | /* -memb, set embedded bit. */ | |
1199 | else if (strcmp (arg, "emb") == 0) | |
1200 | ppc_flags |= EF_PPC_EMB; | |
1201 | ||
1202 | /* -mlittle/-mbig set the endianness. */ | |
1203 | else if (strcmp (arg, "little") == 0 | |
1204 | || strcmp (arg, "little-endian") == 0) | |
1205 | { | |
1206 | target_big_endian = 0; | |
1207 | set_target_endian = 1; | |
1208 | if (ppc_cpu & PPC_OPCODE_VLE) | |
1209 | as_bad (_("the use of -mvle requires big endian.")); | |
1210 | } | |
1211 | ||
1212 | else if (strcmp (arg, "big") == 0 || strcmp (arg, "big-endian") == 0) | |
1213 | { | |
1214 | target_big_endian = 1; | |
1215 | set_target_endian = 1; | |
1216 | } | |
1217 | ||
1218 | else if (strcmp (arg, "solaris") == 0) | |
1219 | { | |
1220 | msolaris = TRUE; | |
1221 | ppc_comment_chars = ppc_solaris_comment_chars; | |
1222 | } | |
1223 | ||
1224 | else if (strcmp (arg, "no-solaris") == 0) | |
1225 | { | |
1226 | msolaris = FALSE; | |
1227 | ppc_comment_chars = ppc_eabi_comment_chars; | |
1228 | } | |
1229 | #endif | |
1230 | else | |
1231 | { | |
1232 | as_bad (_("invalid switch -m%s"), arg); | |
1233 | return 0; | |
1234 | } | |
1235 | break; | |
1236 | ||
1237 | #ifdef OBJ_ELF | |
1238 | /* -V: SVR4 argument to print version ID. */ | |
1239 | case 'V': | |
1240 | print_version_id (); | |
1241 | break; | |
1242 | ||
1243 | /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section | |
1244 | should be emitted or not. FIXME: Not implemented. */ | |
1245 | case 'Q': | |
1246 | break; | |
1247 | ||
1248 | /* Solaris takes -s to specify that .stabs go in a .stabs section, | |
1249 | rather than .stabs.excl, which is ignored by the linker. | |
1250 | FIXME: Not implemented. */ | |
1251 | case 's': | |
1252 | if (arg) | |
1253 | return 0; | |
1254 | ||
1255 | break; | |
1256 | #endif | |
1257 | ||
1258 | case OPTION_NOPS: | |
1259 | { | |
1260 | char *end; | |
1261 | nop_limit = strtoul (optarg, &end, 0); | |
1262 | if (*end) | |
1263 | as_bad (_("--nops needs a numeric argument")); | |
1264 | } | |
1265 | break; | |
1266 | ||
1267 | default: | |
1268 | return 0; | |
1269 | } | |
1270 | ||
1271 | return 1; | |
1272 | } | |
1273 | ||
1274 | void | |
1275 | md_show_usage (FILE *stream) | |
1276 | { | |
1277 | fprintf (stream, _("\ | |
1278 | PowerPC options:\n\ | |
1279 | -a32 generate ELF32/XCOFF32\n\ | |
1280 | -a64 generate ELF64/XCOFF64\n\ | |
1281 | -u ignored\n\ | |
1282 | -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\ | |
1283 | -mpwr generate code for POWER (RIOS1)\n\ | |
1284 | -m601 generate code for PowerPC 601\n\ | |
1285 | -mppc, -mppc32, -m603, -m604\n\ | |
1286 | generate code for PowerPC 603/604\n\ | |
1287 | -m403 generate code for PowerPC 403\n\ | |
1288 | -m405 generate code for PowerPC 405\n\ | |
1289 | -m440 generate code for PowerPC 440\n\ | |
1290 | -m464 generate code for PowerPC 464\n\ | |
1291 | -m476 generate code for PowerPC 476\n\ | |
1292 | -m7400, -m7410, -m7450, -m7455\n\ | |
1293 | generate code for PowerPC 7400/7410/7450/7455\n\ | |
1294 | -m750cl generate code for PowerPC 750cl\n")); | |
1295 | fprintf (stream, _("\ | |
1296 | -mppc64, -m620 generate code for PowerPC 620/625/630\n\ | |
1297 | -mppc64bridge generate code for PowerPC 64, including bridge insns\n\ | |
1298 | -mbooke generate code for 32-bit PowerPC BookE\n\ | |
1299 | -ma2 generate code for A2 architecture\n\ | |
1300 | -mpower4, -mpwr4 generate code for Power4 architecture\n\ | |
1301 | -mpower5, -mpwr5, -mpwr5x\n\ | |
1302 | generate code for Power5 architecture\n\ | |
1303 | -mpower6, -mpwr6 generate code for Power6 architecture\n\ | |
1304 | -mpower7, -mpwr7 generate code for Power7 architecture\n\ | |
1305 | -mpower8, -mpwr8 generate code for Power8 architecture\n\ | |
1306 | -mcell generate code for Cell Broadband Engine architecture\n\ | |
1307 | -mcom generate code Power/PowerPC common instructions\n\ | |
1308 | -many generate code for any architecture (PWR/PWRX/PPC)\n")); | |
1309 | fprintf (stream, _("\ | |
1310 | -maltivec generate code for AltiVec\n\ | |
1311 | -mvsx generate code for Vector-Scalar (VSX) instructions\n\ | |
1312 | -mhtm generate code for Hardware Transactional Memory\n\ | |
1313 | -me300 generate code for PowerPC e300 family\n\ | |
1314 | -me500, -me500x2 generate code for Motorola e500 core complex\n\ | |
1315 | -me500mc, generate code for Freescale e500mc core complex\n\ | |
1316 | -me500mc64, generate code for Freescale e500mc64 core complex\n\ | |
1317 | -me5500, generate code for Freescale e5500 core complex\n\ | |
1318 | -me6500, generate code for Freescale e6500 core complex\n\ | |
1319 | -mspe generate code for Motorola SPE instructions\n\ | |
1320 | -mvle generate code for Freescale VLE instructions\n\ | |
1321 | -mtitan generate code for AppliedMicro Titan core complex\n\ | |
1322 | -mregnames Allow symbolic names for registers\n\ | |
1323 | -mno-regnames Do not allow symbolic names for registers\n")); | |
1324 | #ifdef OBJ_ELF | |
1325 | fprintf (stream, _("\ | |
1326 | -mrelocatable support for GCC's -mrelocatble option\n\ | |
1327 | -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\ | |
1328 | -memb set PPC_EMB bit in ELF flags\n\ | |
1329 | -mlittle, -mlittle-endian, -le\n\ | |
1330 | generate code for a little endian machine\n\ | |
1331 | -mbig, -mbig-endian, -be\n\ | |
1332 | generate code for a big endian machine\n\ | |
1333 | -msolaris generate code for Solaris\n\ | |
1334 | -mno-solaris do not generate code for Solaris\n\ | |
1335 | -K PIC set EF_PPC_RELOCATABLE_LIB in ELF flags\n\ | |
1336 | -V print assembler version number\n\ | |
1337 | -Qy, -Qn ignored\n")); | |
1338 | #endif | |
1339 | fprintf (stream, _("\ | |
1340 | -nops=count when aligning, more than COUNT nops uses a branch\n")); | |
1341 | } | |
1342 | \f | |
1343 | /* Set ppc_cpu if it is not already set. */ | |
1344 | ||
1345 | static void | |
1346 | ppc_set_cpu (void) | |
1347 | { | |
1348 | const char *default_os = TARGET_OS; | |
1349 | const char *default_cpu = TARGET_CPU; | |
1350 | ||
1351 | if ((ppc_cpu & ~(ppc_cpu_t) PPC_OPCODE_ANY) == 0) | |
1352 | { | |
1353 | if (ppc_obj64) | |
1354 | ppc_cpu |= PPC_OPCODE_PPC | PPC_OPCODE_64; | |
1355 | else if (strncmp (default_os, "aix", 3) == 0 | |
1356 | && default_os[3] >= '4' && default_os[3] <= '9') | |
1357 | ppc_cpu |= PPC_OPCODE_COMMON; | |
1358 | else if (strncmp (default_os, "aix3", 4) == 0) | |
1359 | ppc_cpu |= PPC_OPCODE_POWER; | |
1360 | else if (strcmp (default_cpu, "rs6000") == 0) | |
1361 | ppc_cpu |= PPC_OPCODE_POWER; | |
1362 | else if (strncmp (default_cpu, "powerpc", 7) == 0) | |
1363 | ppc_cpu |= PPC_OPCODE_PPC; | |
1364 | else | |
1365 | as_fatal (_("unknown default cpu = %s, os = %s"), | |
1366 | default_cpu, default_os); | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | /* Figure out the BFD architecture to use. This function and ppc_mach | |
1371 | are called well before md_begin, when the output file is opened. */ | |
1372 | ||
1373 | enum bfd_architecture | |
1374 | ppc_arch (void) | |
1375 | { | |
1376 | const char *default_cpu = TARGET_CPU; | |
1377 | ppc_set_cpu (); | |
1378 | ||
1379 | if ((ppc_cpu & PPC_OPCODE_PPC) != 0) | |
1380 | return bfd_arch_powerpc; | |
1381 | if ((ppc_cpu & PPC_OPCODE_VLE) != 0) | |
1382 | return bfd_arch_powerpc; | |
1383 | if ((ppc_cpu & PPC_OPCODE_POWER) != 0) | |
1384 | return bfd_arch_rs6000; | |
1385 | if ((ppc_cpu & (PPC_OPCODE_COMMON | PPC_OPCODE_ANY)) != 0) | |
1386 | { | |
1387 | if (strcmp (default_cpu, "rs6000") == 0) | |
1388 | return bfd_arch_rs6000; | |
1389 | else if (strncmp (default_cpu, "powerpc", 7) == 0) | |
1390 | return bfd_arch_powerpc; | |
1391 | } | |
1392 | ||
1393 | as_fatal (_("neither Power nor PowerPC opcodes were selected.")); | |
1394 | return bfd_arch_unknown; | |
1395 | } | |
1396 | ||
1397 | unsigned long | |
1398 | ppc_mach (void) | |
1399 | { | |
1400 | if (ppc_obj64) | |
1401 | return bfd_mach_ppc64; | |
1402 | else if (ppc_arch () == bfd_arch_rs6000) | |
1403 | return bfd_mach_rs6k; | |
1404 | else if (ppc_cpu & PPC_OPCODE_TITAN) | |
1405 | return bfd_mach_ppc_titan; | |
1406 | else if (ppc_cpu & PPC_OPCODE_VLE) | |
1407 | return bfd_mach_ppc_vle; | |
1408 | else | |
1409 | return bfd_mach_ppc; | |
1410 | } | |
1411 | ||
1412 | extern char* | |
1413 | ppc_target_format (void) | |
1414 | { | |
1415 | #ifdef OBJ_COFF | |
1416 | #ifdef TE_PE | |
1417 | return target_big_endian ? "pe-powerpc" : "pe-powerpcle"; | |
1418 | #elif TE_POWERMAC | |
1419 | return "xcoff-powermac"; | |
1420 | #else | |
1421 | # ifdef TE_AIX5 | |
1422 | return (ppc_obj64 ? "aix5coff64-rs6000" : "aixcoff-rs6000"); | |
1423 | # else | |
1424 | return (ppc_obj64 ? "aixcoff64-rs6000" : "aixcoff-rs6000"); | |
1425 | # endif | |
1426 | #endif | |
1427 | #endif | |
1428 | #ifdef OBJ_ELF | |
1429 | # ifdef TE_FreeBSD | |
1430 | return (ppc_obj64 ? "elf64-powerpc-freebsd" : "elf32-powerpc-freebsd"); | |
1431 | # elif defined (TE_VXWORKS) | |
1432 | return "elf32-powerpc-vxworks"; | |
1433 | # else | |
1434 | return (target_big_endian | |
1435 | ? (ppc_obj64 ? "elf64-powerpc" : "elf32-powerpc") | |
1436 | : (ppc_obj64 ? "elf64-powerpcle" : "elf32-powerpcle")); | |
1437 | # endif | |
1438 | #endif | |
1439 | } | |
1440 | ||
1441 | /* Validate one entry in powerpc_opcodes[] or vle_opcodes[]. | |
1442 | Return TRUE if there's a problem, otherwise FALSE. */ | |
1443 | ||
1444 | static bfd_boolean | |
1445 | insn_validate (const struct powerpc_opcode *op) | |
1446 | { | |
1447 | const unsigned char *o; | |
1448 | unsigned long omask = op->mask; | |
1449 | ||
1450 | /* The mask had better not trim off opcode bits. */ | |
1451 | if ((op->opcode & omask) != op->opcode) | |
1452 | { | |
1453 | as_bad (_("mask trims opcode bits for %s"), op->name); | |
1454 | return TRUE; | |
1455 | } | |
1456 | ||
1457 | /* The operands must not overlap the opcode or each other. */ | |
1458 | for (o = op->operands; *o; ++o) | |
1459 | { | |
1460 | if (*o >= num_powerpc_operands) | |
1461 | { | |
1462 | as_bad (_("operand index error for %s"), op->name); | |
1463 | return TRUE; | |
1464 | } | |
1465 | else | |
1466 | { | |
1467 | const struct powerpc_operand *operand = &powerpc_operands[*o]; | |
1468 | if (operand->shift != PPC_OPSHIFT_INV) | |
1469 | { | |
1470 | unsigned long mask; | |
1471 | ||
1472 | if (operand->shift >= 0) | |
1473 | mask = operand->bitm << operand->shift; | |
1474 | else | |
1475 | mask = operand->bitm >> -operand->shift; | |
1476 | if (omask & mask) | |
1477 | { | |
1478 | as_bad (_("operand %d overlap in %s"), | |
1479 | (int) (o - op->operands), op->name); | |
1480 | return TRUE; | |
1481 | } | |
1482 | omask |= mask; | |
1483 | } | |
1484 | } | |
1485 | } | |
1486 | return FALSE; | |
1487 | } | |
1488 | ||
1489 | /* Insert opcodes and macros into hash tables. Called at startup and | |
1490 | for .machine pseudo. */ | |
1491 | ||
1492 | static void | |
1493 | ppc_setup_opcodes (void) | |
1494 | { | |
1495 | const struct powerpc_opcode *op; | |
1496 | const struct powerpc_opcode *op_end; | |
1497 | const struct powerpc_macro *macro; | |
1498 | const struct powerpc_macro *macro_end; | |
1499 | bfd_boolean bad_insn = FALSE; | |
1500 | ||
1501 | if (ppc_hash != NULL) | |
1502 | hash_die (ppc_hash); | |
1503 | if (ppc_macro_hash != NULL) | |
1504 | hash_die (ppc_macro_hash); | |
1505 | ||
1506 | /* Insert the opcodes into a hash table. */ | |
1507 | ppc_hash = hash_new (); | |
1508 | ||
1509 | if (ENABLE_CHECKING) | |
1510 | { | |
1511 | unsigned int i; | |
1512 | ||
1513 | /* An index into powerpc_operands is stored in struct fix | |
1514 | fx_pcrel_adjust which is 8 bits wide. */ | |
1515 | gas_assert (num_powerpc_operands < 256); | |
1516 | ||
1517 | /* Check operand masks. Code here and in the disassembler assumes | |
1518 | all the 1's in the mask are contiguous. */ | |
1519 | for (i = 0; i < num_powerpc_operands; ++i) | |
1520 | { | |
1521 | unsigned long mask = powerpc_operands[i].bitm; | |
1522 | unsigned long right_bit; | |
1523 | unsigned int j; | |
1524 | ||
1525 | right_bit = mask & -mask; | |
1526 | mask += right_bit; | |
1527 | right_bit = mask & -mask; | |
1528 | if (mask != right_bit) | |
1529 | { | |
1530 | as_bad (_("powerpc_operands[%d].bitm invalid"), i); | |
1531 | bad_insn = TRUE; | |
1532 | } | |
1533 | for (j = i + 1; j < num_powerpc_operands; ++j) | |
1534 | if (memcmp (&powerpc_operands[i], &powerpc_operands[j], | |
1535 | sizeof (powerpc_operands[0])) == 0) | |
1536 | { | |
1537 | as_bad (_("powerpc_operands[%d] duplicates powerpc_operands[%d]"), | |
1538 | j, i); | |
1539 | bad_insn = TRUE; | |
1540 | } | |
1541 | } | |
1542 | } | |
1543 | ||
1544 | op_end = powerpc_opcodes + powerpc_num_opcodes; | |
1545 | for (op = powerpc_opcodes; op < op_end; op++) | |
1546 | { | |
1547 | if (ENABLE_CHECKING) | |
1548 | { | |
1549 | if (op != powerpc_opcodes) | |
1550 | { | |
1551 | int old_opcode = PPC_OP (op[-1].opcode); | |
1552 | int new_opcode = PPC_OP (op[0].opcode); | |
1553 | ||
1554 | #ifdef PRINT_OPCODE_TABLE | |
1555 | printf ("%-14s\t#%04d\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n", | |
1556 | op->name, op - powerpc_opcodes, (unsigned int) new_opcode, | |
1557 | (unsigned int) op->opcode, (unsigned int) op->mask, | |
1558 | (unsigned long long) op->flags); | |
1559 | #endif | |
1560 | ||
1561 | /* The major opcodes had better be sorted. Code in the | |
1562 | disassembler assumes the insns are sorted according to | |
1563 | major opcode. */ | |
1564 | if (new_opcode < old_opcode) | |
1565 | { | |
1566 | as_bad (_("major opcode is not sorted for %s"), | |
1567 | op->name); | |
1568 | bad_insn = TRUE; | |
1569 | } | |
1570 | } | |
1571 | bad_insn |= insn_validate (op); | |
1572 | } | |
1573 | ||
1574 | if ((ppc_cpu & op->flags) != 0 | |
1575 | && !(ppc_cpu & op->deprecated)) | |
1576 | { | |
1577 | const char *retval; | |
1578 | ||
1579 | retval = hash_insert (ppc_hash, op->name, (void *) op); | |
1580 | if (retval != NULL) | |
1581 | { | |
1582 | as_bad (_("duplicate instruction %s"), | |
1583 | op->name); | |
1584 | bad_insn = TRUE; | |
1585 | } | |
1586 | } | |
1587 | } | |
1588 | ||
1589 | if ((ppc_cpu & PPC_OPCODE_ANY) != 0) | |
1590 | for (op = powerpc_opcodes; op < op_end; op++) | |
1591 | hash_insert (ppc_hash, op->name, (void *) op); | |
1592 | ||
1593 | op_end = vle_opcodes + vle_num_opcodes; | |
1594 | for (op = vle_opcodes; op < op_end; op++) | |
1595 | { | |
1596 | if (ENABLE_CHECKING) | |
1597 | { | |
1598 | if (op != vle_opcodes) | |
1599 | { | |
1600 | unsigned old_seg, new_seg; | |
1601 | ||
1602 | old_seg = VLE_OP (op[-1].opcode, op[-1].mask); | |
1603 | old_seg = VLE_OP_TO_SEG (old_seg); | |
1604 | new_seg = VLE_OP (op[0].opcode, op[0].mask); | |
1605 | new_seg = VLE_OP_TO_SEG (new_seg); | |
1606 | ||
1607 | #ifdef PRINT_OPCODE_TABLE | |
1608 | printf ("%-14s\t#%04d\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n", | |
1609 | op->name, op - powerpc_opcodes, (unsigned int) new_opcode, | |
1610 | (unsigned int) op->opcode, (unsigned int) op->mask, | |
1611 | (unsigned long long) op->flags); | |
1612 | #endif | |
1613 | /* The major opcodes had better be sorted. Code in the | |
1614 | disassembler assumes the insns are sorted according to | |
1615 | major opcode. */ | |
1616 | if (new_seg < old_seg) | |
1617 | { | |
1618 | as_bad (_("major opcode is not sorted for %s"), | |
1619 | op->name); | |
1620 | bad_insn = TRUE; | |
1621 | } | |
1622 | } | |
1623 | ||
1624 | bad_insn |= insn_validate (op); | |
1625 | } | |
1626 | ||
1627 | if ((ppc_cpu & op->flags) != 0 | |
1628 | && !(ppc_cpu & op->deprecated)) | |
1629 | { | |
1630 | const char *retval; | |
1631 | ||
1632 | retval = hash_insert (ppc_hash, op->name, (void *) op); | |
1633 | if (retval != NULL) | |
1634 | { | |
1635 | as_bad (_("duplicate instruction %s"), | |
1636 | op->name); | |
1637 | bad_insn = TRUE; | |
1638 | } | |
1639 | } | |
1640 | } | |
1641 | ||
1642 | if ((ppc_cpu & PPC_OPCODE_VLE) != 0) | |
1643 | for (op = vle_opcodes; op < op_end; op++) | |
1644 | hash_insert (ppc_hash, op->name, (void *) op); | |
1645 | ||
1646 | /* Insert the macros into a hash table. */ | |
1647 | ppc_macro_hash = hash_new (); | |
1648 | ||
1649 | macro_end = powerpc_macros + powerpc_num_macros; | |
1650 | for (macro = powerpc_macros; macro < macro_end; macro++) | |
1651 | { | |
1652 | if ((macro->flags & ppc_cpu) != 0 || (ppc_cpu & PPC_OPCODE_ANY) != 0) | |
1653 | { | |
1654 | const char *retval; | |
1655 | ||
1656 | retval = hash_insert (ppc_macro_hash, macro->name, (void *) macro); | |
1657 | if (retval != (const char *) NULL) | |
1658 | { | |
1659 | as_bad (_("duplicate macro %s"), macro->name); | |
1660 | bad_insn = TRUE; | |
1661 | } | |
1662 | } | |
1663 | } | |
1664 | ||
1665 | if (bad_insn) | |
1666 | abort (); | |
1667 | } | |
1668 | ||
1669 | /* This function is called when the assembler starts up. It is called | |
1670 | after the options have been parsed and the output file has been | |
1671 | opened. */ | |
1672 | ||
1673 | void | |
1674 | md_begin (void) | |
1675 | { | |
1676 | ppc_set_cpu (); | |
1677 | ||
1678 | ppc_cie_data_alignment = ppc_obj64 ? -8 : -4; | |
1679 | ppc_dwarf2_line_min_insn_length = (ppc_cpu & PPC_OPCODE_VLE) ? 2 : 4; | |
1680 | ||
1681 | #ifdef OBJ_ELF | |
1682 | /* Set the ELF flags if desired. */ | |
1683 | if (ppc_flags && !msolaris) | |
1684 | bfd_set_private_flags (stdoutput, ppc_flags); | |
1685 | #endif | |
1686 | ||
1687 | ppc_setup_opcodes (); | |
1688 | ||
1689 | /* Tell the main code what the endianness is if it is not overridden | |
1690 | by the user. */ | |
1691 | if (!set_target_endian) | |
1692 | { | |
1693 | set_target_endian = 1; | |
1694 | target_big_endian = PPC_BIG_ENDIAN; | |
1695 | } | |
1696 | ||
1697 | #ifdef OBJ_XCOFF | |
1698 | ppc_coff_debug_section = coff_section_from_bfd_index (stdoutput, N_DEBUG); | |
1699 | ||
1700 | /* Create dummy symbols to serve as initial csects. This forces the | |
1701 | text csects to precede the data csects. These symbols will not | |
1702 | be output. */ | |
1703 | ppc_text_csects = symbol_make ("dummy\001"); | |
1704 | symbol_get_tc (ppc_text_csects)->within = ppc_text_csects; | |
1705 | ppc_data_csects = symbol_make ("dummy\001"); | |
1706 | symbol_get_tc (ppc_data_csects)->within = ppc_data_csects; | |
1707 | #endif | |
1708 | ||
1709 | #ifdef TE_PE | |
1710 | ||
1711 | ppc_current_section = text_section; | |
1712 | ppc_previous_section = 0; | |
1713 | ||
1714 | #endif | |
1715 | } | |
1716 | ||
1717 | void | |
1718 | ppc_cleanup (void) | |
1719 | { | |
1720 | #ifdef OBJ_ELF | |
1721 | if (ppc_apuinfo_list == NULL) | |
1722 | return; | |
1723 | ||
1724 | /* Ok, so write the section info out. We have this layout: | |
1725 | ||
1726 | byte data what | |
1727 | ---- ---- ---- | |
1728 | 0 8 length of "APUinfo\0" | |
1729 | 4 (n*4) number of APU's (4 bytes each) | |
1730 | 8 2 note type 2 | |
1731 | 12 "APUinfo\0" name | |
1732 | 20 APU#1 first APU's info | |
1733 | 24 APU#2 second APU's info | |
1734 | ... ... | |
1735 | */ | |
1736 | { | |
1737 | char *p; | |
1738 | asection *seg = now_seg; | |
1739 | subsegT subseg = now_subseg; | |
1740 | asection *apuinfo_secp = (asection *) NULL; | |
1741 | unsigned int i; | |
1742 | ||
1743 | /* Create the .PPC.EMB.apuinfo section. */ | |
1744 | apuinfo_secp = subseg_new (".PPC.EMB.apuinfo", 0); | |
1745 | bfd_set_section_flags (stdoutput, | |
1746 | apuinfo_secp, | |
1747 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1748 | ||
1749 | p = frag_more (4); | |
1750 | md_number_to_chars (p, (valueT) 8, 4); | |
1751 | ||
1752 | p = frag_more (4); | |
1753 | md_number_to_chars (p, (valueT) ppc_apuinfo_num * 4, 4); | |
1754 | ||
1755 | p = frag_more (4); | |
1756 | md_number_to_chars (p, (valueT) 2, 4); | |
1757 | ||
1758 | p = frag_more (8); | |
1759 | strcpy (p, "APUinfo"); | |
1760 | ||
1761 | for (i = 0; i < ppc_apuinfo_num; i++) | |
1762 | { | |
1763 | p = frag_more (4); | |
1764 | md_number_to_chars (p, (valueT) ppc_apuinfo_list[i], 4); | |
1765 | } | |
1766 | ||
1767 | frag_align (2, 0, 0); | |
1768 | ||
1769 | /* We probably can't restore the current segment, for there likely | |
1770 | isn't one yet... */ | |
1771 | if (seg && subseg) | |
1772 | subseg_set (seg, subseg); | |
1773 | } | |
1774 | #endif | |
1775 | } | |
1776 | ||
1777 | /* Insert an operand value into an instruction. */ | |
1778 | ||
1779 | static unsigned long | |
1780 | ppc_insert_operand (unsigned long insn, | |
1781 | const struct powerpc_operand *operand, | |
1782 | offsetT val, | |
1783 | ppc_cpu_t cpu, | |
1784 | char *file, | |
1785 | unsigned int line) | |
1786 | { | |
1787 | long min, max, right; | |
1788 | ||
1789 | max = operand->bitm; | |
1790 | right = max & -max; | |
1791 | min = 0; | |
1792 | ||
1793 | if ((operand->flags & PPC_OPERAND_SIGNED) != 0) | |
1794 | { | |
1795 | if ((operand->flags & PPC_OPERAND_SIGNOPT) == 0) | |
1796 | max = (max >> 1) & -right; | |
1797 | min = ~max & -right; | |
1798 | } | |
1799 | ||
1800 | if ((operand->flags & PPC_OPERAND_PLUS1) != 0) | |
1801 | max++; | |
1802 | ||
1803 | if ((operand->flags & PPC_OPERAND_NEGATIVE) != 0) | |
1804 | { | |
1805 | long tmp = min; | |
1806 | min = -max; | |
1807 | max = -tmp; | |
1808 | } | |
1809 | ||
1810 | if (min <= max) | |
1811 | { | |
1812 | /* Some people write constants with the sign extension done by | |
1813 | hand but only up to 32 bits. This shouldn't really be valid, | |
1814 | but, to permit this code to assemble on a 64-bit host, we | |
1815 | sign extend the 32-bit value to 64 bits if so doing makes the | |
1816 | value valid. */ | |
1817 | if (val > max | |
1818 | && (offsetT) (val - 0x80000000 - 0x80000000) >= min | |
1819 | && (offsetT) (val - 0x80000000 - 0x80000000) <= max | |
1820 | && ((val - 0x80000000 - 0x80000000) & (right - 1)) == 0) | |
1821 | val = val - 0x80000000 - 0x80000000; | |
1822 | ||
1823 | /* Similarly, people write expressions like ~(1<<15), and expect | |
1824 | this to be OK for a 32-bit unsigned value. */ | |
1825 | else if (val < min | |
1826 | && (offsetT) (val + 0x80000000 + 0x80000000) >= min | |
1827 | && (offsetT) (val + 0x80000000 + 0x80000000) <= max | |
1828 | && ((val + 0x80000000 + 0x80000000) & (right - 1)) == 0) | |
1829 | val = val + 0x80000000 + 0x80000000; | |
1830 | ||
1831 | else if (val < min | |
1832 | || val > max | |
1833 | || (val & (right - 1)) != 0) | |
1834 | as_bad_value_out_of_range (_("operand"), val, min, max, file, line); | |
1835 | } | |
1836 | ||
1837 | if (operand->insert) | |
1838 | { | |
1839 | const char *errmsg; | |
1840 | ||
1841 | errmsg = NULL; | |
1842 | insn = (*operand->insert) (insn, (long) val, cpu, &errmsg); | |
1843 | if (errmsg != (const char *) NULL) | |
1844 | as_bad_where (file, line, "%s", errmsg); | |
1845 | } | |
1846 | else if (operand->shift >= 0) | |
1847 | insn |= ((long) val & operand->bitm) << operand->shift; | |
1848 | else | |
1849 | insn |= ((long) val & operand->bitm) >> -operand->shift; | |
1850 | ||
1851 | return insn; | |
1852 | } | |
1853 | ||
1854 | \f | |
1855 | #ifdef OBJ_ELF | |
1856 | /* Parse @got, etc. and return the desired relocation. */ | |
1857 | static bfd_reloc_code_real_type | |
1858 | ppc_elf_suffix (char **str_p, expressionS *exp_p) | |
1859 | { | |
1860 | struct map_bfd { | |
1861 | char *string; | |
1862 | unsigned int length : 8; | |
1863 | unsigned int valid32 : 1; | |
1864 | unsigned int valid64 : 1; | |
1865 | unsigned int reloc; | |
1866 | }; | |
1867 | ||
1868 | char ident[20]; | |
1869 | char *str = *str_p; | |
1870 | char *str2; | |
1871 | int ch; | |
1872 | int len; | |
1873 | const struct map_bfd *ptr; | |
1874 | ||
1875 | #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc } | |
1876 | #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc } | |
1877 | #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc } | |
1878 | ||
1879 | static const struct map_bfd mapping[] = { | |
1880 | MAP ("l", BFD_RELOC_LO16), | |
1881 | MAP ("h", BFD_RELOC_HI16), | |
1882 | MAP ("ha", BFD_RELOC_HI16_S), | |
1883 | MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN), | |
1884 | MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN), | |
1885 | MAP ("got", BFD_RELOC_16_GOTOFF), | |
1886 | MAP ("got@l", BFD_RELOC_LO16_GOTOFF), | |
1887 | MAP ("got@h", BFD_RELOC_HI16_GOTOFF), | |
1888 | MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF), | |
1889 | MAP ("plt@l", BFD_RELOC_LO16_PLTOFF), | |
1890 | MAP ("plt@h", BFD_RELOC_HI16_PLTOFF), | |
1891 | MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF), | |
1892 | MAP ("copy", BFD_RELOC_PPC_COPY), | |
1893 | MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT), | |
1894 | MAP ("sectoff", BFD_RELOC_16_BASEREL), | |
1895 | MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL), | |
1896 | MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL), | |
1897 | MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL), | |
1898 | MAP ("tls", BFD_RELOC_PPC_TLS), | |
1899 | MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD), | |
1900 | MAP ("dtprel", BFD_RELOC_PPC_DTPREL), | |
1901 | MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO), | |
1902 | MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI), | |
1903 | MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA), | |
1904 | MAP ("tprel", BFD_RELOC_PPC_TPREL), | |
1905 | MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO), | |
1906 | MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI), | |
1907 | MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA), | |
1908 | MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16), | |
1909 | MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO), | |
1910 | MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI), | |
1911 | MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA), | |
1912 | MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16), | |
1913 | MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO), | |
1914 | MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI), | |
1915 | MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA), | |
1916 | MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16), | |
1917 | MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO), | |
1918 | MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI), | |
1919 | MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA), | |
1920 | MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16), | |
1921 | MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO), | |
1922 | MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI), | |
1923 | MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA), | |
1924 | MAP32 ("fixup", BFD_RELOC_CTOR), | |
1925 | MAP32 ("plt", BFD_RELOC_24_PLT_PCREL), | |
1926 | MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL), | |
1927 | MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC), | |
1928 | MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC), | |
1929 | MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL), | |
1930 | MAP32 ("sdarel", BFD_RELOC_GPREL16), | |
1931 | MAP32 ("sdarel@l", BFD_RELOC_PPC_VLE_SDAREL_LO16A), | |
1932 | MAP32 ("sdarel@h", BFD_RELOC_PPC_VLE_SDAREL_HI16A), | |
1933 | MAP32 ("sdarel@ha", BFD_RELOC_PPC_VLE_SDAREL_HA16A), | |
1934 | MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32), | |
1935 | MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16), | |
1936 | MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO), | |
1937 | MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI), | |
1938 | MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA), | |
1939 | MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16), | |
1940 | MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL), | |
1941 | MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16), | |
1942 | MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21), | |
1943 | MAP32 ("sda21@l", BFD_RELOC_PPC_VLE_SDA21_LO), | |
1944 | MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF), | |
1945 | MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16), | |
1946 | MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO), | |
1947 | MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI), | |
1948 | MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA), | |
1949 | MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD), | |
1950 | MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA), | |
1951 | MAP32 ("xgot", BFD_RELOC_PPC_TOC16), | |
1952 | MAP64 ("higher", BFD_RELOC_PPC64_HIGHER), | |
1953 | MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S), | |
1954 | MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST), | |
1955 | MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S), | |
1956 | MAP64 ("tocbase", BFD_RELOC_PPC64_TOC), | |
1957 | MAP64 ("toc", BFD_RELOC_PPC_TOC16), | |
1958 | MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO), | |
1959 | MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI), | |
1960 | MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA), | |
1961 | MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER), | |
1962 | MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA), | |
1963 | MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST), | |
1964 | MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA), | |
1965 | MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER), | |
1966 | MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA), | |
1967 | MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST), | |
1968 | MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA), | |
1969 | { (char *) 0, 0, 0, 0, BFD_RELOC_UNUSED } | |
1970 | }; | |
1971 | ||
1972 | if (*str++ != '@') | |
1973 | return BFD_RELOC_UNUSED; | |
1974 | ||
1975 | for (ch = *str, str2 = ident; | |
1976 | (str2 < ident + sizeof (ident) - 1 | |
1977 | && (ISALNUM (ch) || ch == '@')); | |
1978 | ch = *++str) | |
1979 | { | |
1980 | *str2++ = TOLOWER (ch); | |
1981 | } | |
1982 | ||
1983 | *str2 = '\0'; | |
1984 | len = str2 - ident; | |
1985 | ||
1986 | ch = ident[0]; | |
1987 | for (ptr = &mapping[0]; ptr->length > 0; ptr++) | |
1988 | if (ch == ptr->string[0] | |
1989 | && len == ptr->length | |
1990 | && memcmp (ident, ptr->string, ptr->length) == 0 | |
1991 | && (ppc_obj64 ? ptr->valid64 : ptr->valid32)) | |
1992 | { | |
1993 | int reloc = ptr->reloc; | |
1994 | ||
1995 | if (!ppc_obj64 && exp_p->X_add_number != 0) | |
1996 | { | |
1997 | switch (reloc) | |
1998 | { | |
1999 | case BFD_RELOC_16_GOTOFF: | |
2000 | case BFD_RELOC_LO16_GOTOFF: | |
2001 | case BFD_RELOC_HI16_GOTOFF: | |
2002 | case BFD_RELOC_HI16_S_GOTOFF: | |
2003 | as_warn (_("identifier+constant@got means " | |
2004 | "identifier@got+constant")); | |
2005 | break; | |
2006 | ||
2007 | case BFD_RELOC_PPC_GOT_TLSGD16: | |
2008 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: | |
2009 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: | |
2010 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: | |
2011 | case BFD_RELOC_PPC_GOT_TLSLD16: | |
2012 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: | |
2013 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: | |
2014 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: | |
2015 | case BFD_RELOC_PPC_GOT_DTPREL16: | |
2016 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: | |
2017 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: | |
2018 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: | |
2019 | case BFD_RELOC_PPC_GOT_TPREL16: | |
2020 | case BFD_RELOC_PPC_GOT_TPREL16_LO: | |
2021 | case BFD_RELOC_PPC_GOT_TPREL16_HI: | |
2022 | case BFD_RELOC_PPC_GOT_TPREL16_HA: | |
2023 | as_bad (_("symbol+offset not supported for got tls")); | |
2024 | break; | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | /* Now check for identifier@suffix+constant. */ | |
2029 | if (*str == '-' || *str == '+') | |
2030 | { | |
2031 | char *orig_line = input_line_pointer; | |
2032 | expressionS new_exp; | |
2033 | ||
2034 | input_line_pointer = str; | |
2035 | expression (&new_exp); | |
2036 | if (new_exp.X_op == O_constant) | |
2037 | { | |
2038 | exp_p->X_add_number += new_exp.X_add_number; | |
2039 | str = input_line_pointer; | |
2040 | } | |
2041 | ||
2042 | if (&input_line_pointer != str_p) | |
2043 | input_line_pointer = orig_line; | |
2044 | } | |
2045 | *str_p = str; | |
2046 | ||
2047 | if (reloc == (int) BFD_RELOC_PPC64_TOC | |
2048 | && exp_p->X_op == O_symbol | |
2049 | && strcmp (S_GET_NAME (exp_p->X_add_symbol), ".TOC.") == 0) | |
2050 | { | |
2051 | /* Change the symbol so that the dummy .TOC. symbol can be | |
2052 | omitted from the object file. */ | |
2053 | exp_p->X_add_symbol = &abs_symbol; | |
2054 | } | |
2055 | ||
2056 | return (bfd_reloc_code_real_type) reloc; | |
2057 | } | |
2058 | ||
2059 | return BFD_RELOC_UNUSED; | |
2060 | } | |
2061 | ||
2062 | /* Like normal .long/.short/.word, except support @got, etc. | |
2063 | Clobbers input_line_pointer, checks end-of-line. */ | |
2064 | static void | |
2065 | ppc_elf_cons (int nbytes /* 1=.byte, 2=.word, 4=.long, 8=.llong */) | |
2066 | { | |
2067 | expressionS exp; | |
2068 | bfd_reloc_code_real_type reloc; | |
2069 | ||
2070 | if (is_it_end_of_statement ()) | |
2071 | { | |
2072 | demand_empty_rest_of_line (); | |
2073 | return; | |
2074 | } | |
2075 | ||
2076 | do | |
2077 | { | |
2078 | expression (&exp); | |
2079 | if (exp.X_op == O_symbol | |
2080 | && *input_line_pointer == '@' | |
2081 | && (reloc = ppc_elf_suffix (&input_line_pointer, | |
2082 | &exp)) != BFD_RELOC_UNUSED) | |
2083 | { | |
2084 | reloc_howto_type *reloc_howto; | |
2085 | int size; | |
2086 | ||
2087 | reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc); | |
2088 | size = bfd_get_reloc_size (reloc_howto); | |
2089 | ||
2090 | if (size > nbytes) | |
2091 | { | |
2092 | as_bad (_("%s relocations do not fit in %d bytes\n"), | |
2093 | reloc_howto->name, nbytes); | |
2094 | } | |
2095 | else | |
2096 | { | |
2097 | char *p; | |
2098 | int offset; | |
2099 | ||
2100 | p = frag_more (nbytes); | |
2101 | memset (p, 0, nbytes); | |
2102 | offset = 0; | |
2103 | if (target_big_endian) | |
2104 | offset = nbytes - size; | |
2105 | fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size, | |
2106 | &exp, 0, reloc); | |
2107 | } | |
2108 | } | |
2109 | else | |
2110 | emit_expr (&exp, (unsigned int) nbytes); | |
2111 | } | |
2112 | while (*input_line_pointer++ == ','); | |
2113 | ||
2114 | /* Put terminator back into stream. */ | |
2115 | input_line_pointer--; | |
2116 | demand_empty_rest_of_line (); | |
2117 | } | |
2118 | ||
2119 | /* Solaris pseduo op to change to the .rodata section. */ | |
2120 | static void | |
2121 | ppc_elf_rdata (int xxx) | |
2122 | { | |
2123 | char *save_line = input_line_pointer; | |
2124 | static char section[] = ".rodata\n"; | |
2125 | ||
2126 | /* Just pretend this is .section .rodata */ | |
2127 | input_line_pointer = section; | |
2128 | obj_elf_section (xxx); | |
2129 | ||
2130 | input_line_pointer = save_line; | |
2131 | } | |
2132 | ||
2133 | /* Pseudo op to make file scope bss items. */ | |
2134 | static void | |
2135 | ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED) | |
2136 | { | |
2137 | char *name; | |
2138 | char c; | |
2139 | char *p; | |
2140 | offsetT size; | |
2141 | symbolS *symbolP; | |
2142 | offsetT align; | |
2143 | segT old_sec; | |
2144 | int old_subsec; | |
2145 | char *pfrag; | |
2146 | int align2; | |
2147 | ||
2148 | name = input_line_pointer; | |
2149 | c = get_symbol_end (); | |
2150 | ||
2151 | /* just after name is now '\0'. */ | |
2152 | p = input_line_pointer; | |
2153 | *p = c; | |
2154 | SKIP_WHITESPACE (); | |
2155 | if (*input_line_pointer != ',') | |
2156 | { | |
2157 | as_bad (_("expected comma after symbol-name: rest of line ignored.")); | |
2158 | ignore_rest_of_line (); | |
2159 | return; | |
2160 | } | |
2161 | ||
2162 | input_line_pointer++; /* skip ',' */ | |
2163 | if ((size = get_absolute_expression ()) < 0) | |
2164 | { | |
2165 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size); | |
2166 | ignore_rest_of_line (); | |
2167 | return; | |
2168 | } | |
2169 | ||
2170 | /* The third argument to .lcomm is the alignment. */ | |
2171 | if (*input_line_pointer != ',') | |
2172 | align = 8; | |
2173 | else | |
2174 | { | |
2175 | ++input_line_pointer; | |
2176 | align = get_absolute_expression (); | |
2177 | if (align <= 0) | |
2178 | { | |
2179 | as_warn (_("ignoring bad alignment")); | |
2180 | align = 8; | |
2181 | } | |
2182 | } | |
2183 | ||
2184 | *p = 0; | |
2185 | symbolP = symbol_find_or_make (name); | |
2186 | *p = c; | |
2187 | ||
2188 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) | |
2189 | { | |
2190 | as_bad (_("ignoring attempt to re-define symbol `%s'."), | |
2191 | S_GET_NAME (symbolP)); | |
2192 | ignore_rest_of_line (); | |
2193 | return; | |
2194 | } | |
2195 | ||
2196 | if (S_GET_VALUE (symbolP) && S_GET_VALUE (symbolP) != (valueT) size) | |
2197 | { | |
2198 | as_bad (_("length of .lcomm \"%s\" is already %ld. Not changed to %ld."), | |
2199 | S_GET_NAME (symbolP), | |
2200 | (long) S_GET_VALUE (symbolP), | |
2201 | (long) size); | |
2202 | ||
2203 | ignore_rest_of_line (); | |
2204 | return; | |
2205 | } | |
2206 | ||
2207 | /* Allocate_bss. */ | |
2208 | old_sec = now_seg; | |
2209 | old_subsec = now_subseg; | |
2210 | if (align) | |
2211 | { | |
2212 | /* Convert to a power of 2 alignment. */ | |
2213 | for (align2 = 0; (align & 1) == 0; align >>= 1, ++align2); | |
2214 | if (align != 1) | |
2215 | { | |
2216 | as_bad (_("common alignment not a power of 2")); | |
2217 | ignore_rest_of_line (); | |
2218 | return; | |
2219 | } | |
2220 | } | |
2221 | else | |
2222 | align2 = 0; | |
2223 | ||
2224 | record_alignment (bss_section, align2); | |
2225 | subseg_set (bss_section, 0); | |
2226 | if (align2) | |
2227 | frag_align (align2, 0, 0); | |
2228 | if (S_GET_SEGMENT (symbolP) == bss_section) | |
2229 | symbol_get_frag (symbolP)->fr_symbol = 0; | |
2230 | symbol_set_frag (symbolP, frag_now); | |
2231 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, size, | |
2232 | (char *) 0); | |
2233 | *pfrag = 0; | |
2234 | S_SET_SIZE (symbolP, size); | |
2235 | S_SET_SEGMENT (symbolP, bss_section); | |
2236 | subseg_set (old_sec, old_subsec); | |
2237 | demand_empty_rest_of_line (); | |
2238 | } | |
2239 | ||
2240 | /* Validate any relocations emitted for -mrelocatable, possibly adding | |
2241 | fixups for word relocations in writable segments, so we can adjust | |
2242 | them at runtime. */ | |
2243 | static void | |
2244 | ppc_elf_validate_fix (fixS *fixp, segT seg) | |
2245 | { | |
2246 | if (fixp->fx_done || fixp->fx_pcrel) | |
2247 | return; | |
2248 | ||
2249 | switch (shlib) | |
2250 | { | |
2251 | case SHLIB_NONE: | |
2252 | case SHLIB_PIC: | |
2253 | return; | |
2254 | ||
2255 | case SHLIB_MRELOCATABLE: | |
2256 | if (fixp->fx_r_type <= BFD_RELOC_UNUSED | |
2257 | && fixp->fx_r_type != BFD_RELOC_16_GOTOFF | |
2258 | && fixp->fx_r_type != BFD_RELOC_HI16_GOTOFF | |
2259 | && fixp->fx_r_type != BFD_RELOC_LO16_GOTOFF | |
2260 | && fixp->fx_r_type != BFD_RELOC_HI16_S_GOTOFF | |
2261 | && fixp->fx_r_type != BFD_RELOC_16_BASEREL | |
2262 | && fixp->fx_r_type != BFD_RELOC_LO16_BASEREL | |
2263 | && fixp->fx_r_type != BFD_RELOC_HI16_BASEREL | |
2264 | && fixp->fx_r_type != BFD_RELOC_HI16_S_BASEREL | |
2265 | && (seg->flags & SEC_LOAD) != 0 | |
2266 | && strcmp (segment_name (seg), ".got2") != 0 | |
2267 | && strcmp (segment_name (seg), ".dtors") != 0 | |
2268 | && strcmp (segment_name (seg), ".ctors") != 0 | |
2269 | && strcmp (segment_name (seg), ".fixup") != 0 | |
2270 | && strcmp (segment_name (seg), ".gcc_except_table") != 0 | |
2271 | && strcmp (segment_name (seg), ".eh_frame") != 0 | |
2272 | && strcmp (segment_name (seg), ".ex_shared") != 0) | |
2273 | { | |
2274 | if ((seg->flags & (SEC_READONLY | SEC_CODE)) != 0 | |
2275 | || fixp->fx_r_type != BFD_RELOC_CTOR) | |
2276 | { | |
2277 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
2278 | _("relocation cannot be done when using -mrelocatable")); | |
2279 | } | |
2280 | } | |
2281 | return; | |
2282 | } | |
2283 | } | |
2284 | ||
2285 | /* Prevent elf_frob_file_before_adjust removing a weak undefined | |
2286 | function descriptor sym if the corresponding code sym is used. */ | |
2287 | ||
2288 | void | |
2289 | ppc_frob_file_before_adjust (void) | |
2290 | { | |
2291 | symbolS *symp; | |
2292 | asection *toc; | |
2293 | ||
2294 | if (!ppc_obj64) | |
2295 | return; | |
2296 | ||
2297 | for (symp = symbol_rootP; symp; symp = symbol_next (symp)) | |
2298 | { | |
2299 | const char *name; | |
2300 | char *dotname; | |
2301 | symbolS *dotsym; | |
2302 | size_t len; | |
2303 | ||
2304 | name = S_GET_NAME (symp); | |
2305 | if (name[0] == '.') | |
2306 | continue; | |
2307 | ||
2308 | if (! S_IS_WEAK (symp) | |
2309 | || S_IS_DEFINED (symp)) | |
2310 | continue; | |
2311 | ||
2312 | len = strlen (name) + 1; | |
2313 | dotname = xmalloc (len + 1); | |
2314 | dotname[0] = '.'; | |
2315 | memcpy (dotname + 1, name, len); | |
2316 | dotsym = symbol_find_noref (dotname, 1); | |
2317 | free (dotname); | |
2318 | if (dotsym != NULL && (symbol_used_p (dotsym) | |
2319 | || symbol_used_in_reloc_p (dotsym))) | |
2320 | symbol_mark_used (symp); | |
2321 | ||
2322 | } | |
2323 | ||
2324 | toc = bfd_get_section_by_name (stdoutput, ".toc"); | |
2325 | if (toc != NULL | |
2326 | && toc_reloc_types != has_large_toc_reloc | |
2327 | && bfd_section_size (stdoutput, toc) > 0x10000) | |
2328 | as_warn (_("TOC section size exceeds 64k")); | |
2329 | } | |
2330 | ||
2331 | /* .TOC. used in an opd entry as .TOC.@tocbase doesn't need to be | |
2332 | emitted. Other uses of .TOC. will cause the symbol to be marked | |
2333 | with BSF_KEEP in md_apply_fix. */ | |
2334 | ||
2335 | void | |
2336 | ppc_elf_adjust_symtab (void) | |
2337 | { | |
2338 | if (ppc_obj64) | |
2339 | { | |
2340 | symbolS *symp; | |
2341 | symp = symbol_find (".TOC."); | |
2342 | if (symp != NULL) | |
2343 | { | |
2344 | asymbol *bsym = symbol_get_bfdsym (symp); | |
2345 | if ((bsym->flags & BSF_KEEP) == 0) | |
2346 | symbol_remove (symp, &symbol_rootP, &symbol_lastP); | |
2347 | else | |
2348 | S_SET_WEAK (symp); | |
2349 | } | |
2350 | } | |
2351 | } | |
2352 | #endif /* OBJ_ELF */ | |
2353 | \f | |
2354 | #ifdef TE_PE | |
2355 | ||
2356 | /* | |
2357 | * Summary of parse_toc_entry. | |
2358 | * | |
2359 | * in: Input_line_pointer points to the '[' in one of: | |
2360 | * | |
2361 | * [toc] [tocv] [toc32] [toc64] | |
2362 | * | |
2363 | * Anything else is an error of one kind or another. | |
2364 | * | |
2365 | * out: | |
2366 | * return value: success or failure | |
2367 | * toc_kind: kind of toc reference | |
2368 | * input_line_pointer: | |
2369 | * success: first char after the ']' | |
2370 | * failure: unchanged | |
2371 | * | |
2372 | * settings: | |
2373 | * | |
2374 | * [toc] - rv == success, toc_kind = default_toc | |
2375 | * [tocv] - rv == success, toc_kind = data_in_toc | |
2376 | * [toc32] - rv == success, toc_kind = must_be_32 | |
2377 | * [toc64] - rv == success, toc_kind = must_be_64 | |
2378 | * | |
2379 | */ | |
2380 | ||
2381 | enum toc_size_qualifier | |
2382 | { | |
2383 | default_toc, /* The toc cell constructed should be the system default size */ | |
2384 | data_in_toc, /* This is a direct reference to a toc cell */ | |
2385 | must_be_32, /* The toc cell constructed must be 32 bits wide */ | |
2386 | must_be_64 /* The toc cell constructed must be 64 bits wide */ | |
2387 | }; | |
2388 | ||
2389 | static int | |
2390 | parse_toc_entry (enum toc_size_qualifier *toc_kind) | |
2391 | { | |
2392 | char *start; | |
2393 | char *toc_spec; | |
2394 | char c; | |
2395 | enum toc_size_qualifier t; | |
2396 | ||
2397 | /* Save the input_line_pointer. */ | |
2398 | start = input_line_pointer; | |
2399 | ||
2400 | /* Skip over the '[' , and whitespace. */ | |
2401 | ++input_line_pointer; | |
2402 | SKIP_WHITESPACE (); | |
2403 | ||
2404 | /* Find the spelling of the operand. */ | |
2405 | toc_spec = input_line_pointer; | |
2406 | c = get_symbol_end (); | |
2407 | ||
2408 | if (strcmp (toc_spec, "toc") == 0) | |
2409 | { | |
2410 | t = default_toc; | |
2411 | } | |
2412 | else if (strcmp (toc_spec, "tocv") == 0) | |
2413 | { | |
2414 | t = data_in_toc; | |
2415 | } | |
2416 | else if (strcmp (toc_spec, "toc32") == 0) | |
2417 | { | |
2418 | t = must_be_32; | |
2419 | } | |
2420 | else if (strcmp (toc_spec, "toc64") == 0) | |
2421 | { | |
2422 | t = must_be_64; | |
2423 | } | |
2424 | else | |
2425 | { | |
2426 | as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec); | |
2427 | *input_line_pointer = c; | |
2428 | input_line_pointer = start; | |
2429 | return 0; | |
2430 | } | |
2431 | ||
2432 | /* Now find the ']'. */ | |
2433 | *input_line_pointer = c; | |
2434 | ||
2435 | SKIP_WHITESPACE (); /* leading whitespace could be there. */ | |
2436 | c = *input_line_pointer++; /* input_line_pointer->past char in c. */ | |
2437 | ||
2438 | if (c != ']') | |
2439 | { | |
2440 | as_bad (_("syntax error: expected `]', found `%c'"), c); | |
2441 | input_line_pointer = start; | |
2442 | return 0; | |
2443 | } | |
2444 | ||
2445 | *toc_kind = t; | |
2446 | return 1; | |
2447 | } | |
2448 | #endif | |
2449 | ||
2450 | #if defined (OBJ_XCOFF) || defined (OBJ_ELF) | |
2451 | /* See whether a symbol is in the TOC section. */ | |
2452 | ||
2453 | static int | |
2454 | ppc_is_toc_sym (symbolS *sym) | |
2455 | { | |
2456 | #ifdef OBJ_XCOFF | |
2457 | return symbol_get_tc (sym)->symbol_class == XMC_TC; | |
2458 | #endif | |
2459 | #ifdef OBJ_ELF | |
2460 | const char *sname = segment_name (S_GET_SEGMENT (sym)); | |
2461 | if (ppc_obj64) | |
2462 | return strcmp (sname, ".toc") == 0; | |
2463 | else | |
2464 | return strcmp (sname, ".got") == 0; | |
2465 | #endif | |
2466 | } | |
2467 | #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */ | |
2468 | \f | |
2469 | ||
2470 | #ifdef OBJ_ELF | |
2471 | #define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff)) | |
2472 | static void | |
2473 | ppc_apuinfo_section_add (unsigned int apu, unsigned int version) | |
2474 | { | |
2475 | unsigned int i; | |
2476 | ||
2477 | /* Check we don't already exist. */ | |
2478 | for (i = 0; i < ppc_apuinfo_num; i++) | |
2479 | if (ppc_apuinfo_list[i] == APUID (apu, version)) | |
2480 | return; | |
2481 | ||
2482 | if (ppc_apuinfo_num == ppc_apuinfo_num_alloc) | |
2483 | { | |
2484 | if (ppc_apuinfo_num_alloc == 0) | |
2485 | { | |
2486 | ppc_apuinfo_num_alloc = 4; | |
2487 | ppc_apuinfo_list = (unsigned long *) | |
2488 | xmalloc (sizeof (unsigned long) * ppc_apuinfo_num_alloc); | |
2489 | } | |
2490 | else | |
2491 | { | |
2492 | ppc_apuinfo_num_alloc += 4; | |
2493 | ppc_apuinfo_list = (unsigned long *) xrealloc (ppc_apuinfo_list, | |
2494 | sizeof (unsigned long) * ppc_apuinfo_num_alloc); | |
2495 | } | |
2496 | } | |
2497 | ppc_apuinfo_list[ppc_apuinfo_num++] = APUID (apu, version); | |
2498 | } | |
2499 | #undef APUID | |
2500 | #endif | |
2501 | \f | |
2502 | ||
2503 | /* We need to keep a list of fixups. We can't simply generate them as | |
2504 | we go, because that would require us to first create the frag, and | |
2505 | that would screw up references to ``.''. */ | |
2506 | ||
2507 | struct ppc_fixup | |
2508 | { | |
2509 | expressionS exp; | |
2510 | int opindex; | |
2511 | bfd_reloc_code_real_type reloc; | |
2512 | }; | |
2513 | ||
2514 | #define MAX_INSN_FIXUPS (5) | |
2515 | ||
2516 | /* Form I16L. */ | |
2517 | #define E_OR2I_INSN 0x7000C000 | |
2518 | #define E_AND2I_DOT_INSN 0x7000C800 | |
2519 | #define E_OR2IS_INSN 0x7000D000 | |
2520 | #define E_LIS_INSN 0x7000E000 | |
2521 | #define E_AND2IS_DOT_INSN 0x7000E800 | |
2522 | ||
2523 | /* Form I16A. */ | |
2524 | #define E_ADD2I_DOT_INSN 0x70008800 | |
2525 | #define E_ADD2IS_INSN 0x70009000 | |
2526 | #define E_CMP16I_INSN 0x70009800 | |
2527 | #define E_MULL2I_INSN 0x7000A000 | |
2528 | #define E_CMPL16I_INSN 0x7000A800 | |
2529 | #define E_CMPH16I_INSN 0x7000B000 | |
2530 | #define E_CMPHL16I_INSN 0x7000B800 | |
2531 | ||
2532 | /* This routine is called for each instruction to be assembled. */ | |
2533 | ||
2534 | void | |
2535 | md_assemble (char *str) | |
2536 | { | |
2537 | char *s; | |
2538 | const struct powerpc_opcode *opcode; | |
2539 | unsigned long insn; | |
2540 | const unsigned char *opindex_ptr; | |
2541 | int skip_optional; | |
2542 | int need_paren; | |
2543 | int next_opindex; | |
2544 | struct ppc_fixup fixups[MAX_INSN_FIXUPS]; | |
2545 | int fc; | |
2546 | char *f; | |
2547 | int addr_mod; | |
2548 | int i; | |
2549 | unsigned int insn_length; | |
2550 | ||
2551 | /* Get the opcode. */ | |
2552 | for (s = str; *s != '\0' && ! ISSPACE (*s); s++) | |
2553 | ; | |
2554 | if (*s != '\0') | |
2555 | *s++ = '\0'; | |
2556 | ||
2557 | /* Look up the opcode in the hash table. */ | |
2558 | opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, str); | |
2559 | if (opcode == (const struct powerpc_opcode *) NULL) | |
2560 | { | |
2561 | const struct powerpc_macro *macro; | |
2562 | ||
2563 | macro = (const struct powerpc_macro *) hash_find (ppc_macro_hash, str); | |
2564 | if (macro == (const struct powerpc_macro *) NULL) | |
2565 | as_bad (_("unrecognized opcode: `%s'"), str); | |
2566 | else | |
2567 | ppc_macro (s, macro); | |
2568 | ||
2569 | return; | |
2570 | } | |
2571 | ||
2572 | insn = opcode->opcode; | |
2573 | ||
2574 | str = s; | |
2575 | while (ISSPACE (*str)) | |
2576 | ++str; | |
2577 | ||
2578 | /* PowerPC operands are just expressions. The only real issue is | |
2579 | that a few operand types are optional. All cases which might use | |
2580 | an optional operand separate the operands only with commas (in some | |
2581 | cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never | |
2582 | have optional operands). Most instructions with optional operands | |
2583 | have only one. Those that have more than one optional operand can | |
2584 | take either all their operands or none. So, before we start seriously | |
2585 | parsing the operands, we check to see if we have optional operands, | |
2586 | and if we do, we count the number of commas to see which operands | |
2587 | have been omitted. */ | |
2588 | skip_optional = 0; | |
2589 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) | |
2590 | { | |
2591 | const struct powerpc_operand *operand; | |
2592 | ||
2593 | operand = &powerpc_operands[*opindex_ptr]; | |
2594 | if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0) | |
2595 | { | |
2596 | unsigned int opcount; | |
2597 | unsigned int num_operands_expected; | |
2598 | ||
2599 | /* There is an optional operand. Count the number of | |
2600 | commas in the input line. */ | |
2601 | if (*str == '\0') | |
2602 | opcount = 0; | |
2603 | else | |
2604 | { | |
2605 | opcount = 1; | |
2606 | s = str; | |
2607 | while ((s = strchr (s, ',')) != (char *) NULL) | |
2608 | { | |
2609 | ++opcount; | |
2610 | ++s; | |
2611 | } | |
2612 | } | |
2613 | ||
2614 | /* Compute the number of expected operands. | |
2615 | Do not count fake operands. */ | |
2616 | for (num_operands_expected = 0, i = 0; opcode->operands[i]; i ++) | |
2617 | if ((powerpc_operands [opcode->operands[i]].flags & PPC_OPERAND_FAKE) == 0) | |
2618 | ++ num_operands_expected; | |
2619 | ||
2620 | /* If there are fewer operands in the line then are called | |
2621 | for by the instruction, we want to skip the optional | |
2622 | operands. */ | |
2623 | if (opcount < num_operands_expected) | |
2624 | skip_optional = 1; | |
2625 | ||
2626 | break; | |
2627 | } | |
2628 | } | |
2629 | ||
2630 | /* Gather the operands. */ | |
2631 | need_paren = 0; | |
2632 | next_opindex = 0; | |
2633 | fc = 0; | |
2634 | for (opindex_ptr = opcode->operands; *opindex_ptr != 0; opindex_ptr++) | |
2635 | { | |
2636 | const struct powerpc_operand *operand; | |
2637 | const char *errmsg; | |
2638 | char *hold; | |
2639 | expressionS ex; | |
2640 | char endc; | |
2641 | ||
2642 | if (next_opindex == 0) | |
2643 | operand = &powerpc_operands[*opindex_ptr]; | |
2644 | else | |
2645 | { | |
2646 | operand = &powerpc_operands[next_opindex]; | |
2647 | next_opindex = 0; | |
2648 | } | |
2649 | errmsg = NULL; | |
2650 | ||
2651 | /* If this is a fake operand, then we do not expect anything | |
2652 | from the input. */ | |
2653 | if ((operand->flags & PPC_OPERAND_FAKE) != 0) | |
2654 | { | |
2655 | insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg); | |
2656 | if (errmsg != (const char *) NULL) | |
2657 | as_bad ("%s", errmsg); | |
2658 | continue; | |
2659 | } | |
2660 | ||
2661 | /* If this is an optional operand, and we are skipping it, just | |
2662 | insert a zero. */ | |
2663 | if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0 | |
2664 | && skip_optional) | |
2665 | { | |
2666 | if (operand->insert) | |
2667 | { | |
2668 | insn = (*operand->insert) (insn, 0L, ppc_cpu, &errmsg); | |
2669 | if (errmsg != (const char *) NULL) | |
2670 | as_bad ("%s", errmsg); | |
2671 | } | |
2672 | if ((operand->flags & PPC_OPERAND_NEXT) != 0) | |
2673 | next_opindex = *opindex_ptr + 1; | |
2674 | continue; | |
2675 | } | |
2676 | ||
2677 | /* Gather the operand. */ | |
2678 | hold = input_line_pointer; | |
2679 | input_line_pointer = str; | |
2680 | ||
2681 | #ifdef TE_PE | |
2682 | if (*input_line_pointer == '[') | |
2683 | { | |
2684 | /* We are expecting something like the second argument here: | |
2685 | * | |
2686 | * lwz r4,[toc].GS.0.static_int(rtoc) | |
2687 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
2688 | * The argument following the `]' must be a symbol name, and the | |
2689 | * register must be the toc register: 'rtoc' or '2' | |
2690 | * | |
2691 | * The effect is to 0 as the displacement field | |
2692 | * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or | |
2693 | * the appropriate variation) reloc against it based on the symbol. | |
2694 | * The linker will build the toc, and insert the resolved toc offset. | |
2695 | * | |
2696 | * Note: | |
2697 | * o The size of the toc entry is currently assumed to be | |
2698 | * 32 bits. This should not be assumed to be a hard coded | |
2699 | * number. | |
2700 | * o In an effort to cope with a change from 32 to 64 bits, | |
2701 | * there are also toc entries that are specified to be | |
2702 | * either 32 or 64 bits: | |
2703 | * lwz r4,[toc32].GS.0.static_int(rtoc) | |
2704 | * lwz r4,[toc64].GS.0.static_int(rtoc) | |
2705 | * These demand toc entries of the specified size, and the | |
2706 | * instruction probably requires it. | |
2707 | */ | |
2708 | ||
2709 | int valid_toc; | |
2710 | enum toc_size_qualifier toc_kind; | |
2711 | bfd_reloc_code_real_type toc_reloc; | |
2712 | ||
2713 | /* Go parse off the [tocXX] part. */ | |
2714 | valid_toc = parse_toc_entry (&toc_kind); | |
2715 | ||
2716 | if (!valid_toc) | |
2717 | { | |
2718 | ignore_rest_of_line (); | |
2719 | break; | |
2720 | } | |
2721 | ||
2722 | /* Now get the symbol following the ']'. */ | |
2723 | expression (&ex); | |
2724 | ||
2725 | switch (toc_kind) | |
2726 | { | |
2727 | case default_toc: | |
2728 | /* In this case, we may not have seen the symbol yet, | |
2729 | since it is allowed to appear on a .extern or .globl | |
2730 | or just be a label in the .data section. */ | |
2731 | toc_reloc = BFD_RELOC_PPC_TOC16; | |
2732 | break; | |
2733 | case data_in_toc: | |
2734 | /* 1. The symbol must be defined and either in the toc | |
2735 | section, or a global. | |
2736 | 2. The reloc generated must have the TOCDEFN flag set | |
2737 | in upper bit mess of the reloc type. | |
2738 | FIXME: It's a little confusing what the tocv | |
2739 | qualifier can be used for. At the very least, I've | |
2740 | seen three uses, only one of which I'm sure I can | |
2741 | explain. */ | |
2742 | if (ex.X_op == O_symbol) | |
2743 | { | |
2744 | gas_assert (ex.X_add_symbol != NULL); | |
2745 | if (symbol_get_bfdsym (ex.X_add_symbol)->section | |
2746 | != tocdata_section) | |
2747 | { | |
2748 | as_bad (_("[tocv] symbol is not a toc symbol")); | |
2749 | } | |
2750 | } | |
2751 | ||
2752 | toc_reloc = BFD_RELOC_PPC_TOC16; | |
2753 | break; | |
2754 | case must_be_32: | |
2755 | /* FIXME: these next two specifically specify 32/64 bit | |
2756 | toc entries. We don't support them today. Is this | |
2757 | the right way to say that? */ | |
2758 | toc_reloc = BFD_RELOC_UNUSED; | |
2759 | as_bad (_("unimplemented toc32 expression modifier")); | |
2760 | break; | |
2761 | case must_be_64: | |
2762 | /* FIXME: see above. */ | |
2763 | toc_reloc = BFD_RELOC_UNUSED; | |
2764 | as_bad (_("unimplemented toc64 expression modifier")); | |
2765 | break; | |
2766 | default: | |
2767 | fprintf (stderr, | |
2768 | _("Unexpected return value [%d] from parse_toc_entry!\n"), | |
2769 | toc_kind); | |
2770 | abort (); | |
2771 | break; | |
2772 | } | |
2773 | ||
2774 | /* We need to generate a fixup for this expression. */ | |
2775 | if (fc >= MAX_INSN_FIXUPS) | |
2776 | as_fatal (_("too many fixups")); | |
2777 | ||
2778 | fixups[fc].reloc = toc_reloc; | |
2779 | fixups[fc].exp = ex; | |
2780 | fixups[fc].opindex = *opindex_ptr; | |
2781 | ++fc; | |
2782 | ||
2783 | /* Ok. We've set up the fixup for the instruction. Now make it | |
2784 | look like the constant 0 was found here. */ | |
2785 | ex.X_unsigned = 1; | |
2786 | ex.X_op = O_constant; | |
2787 | ex.X_add_number = 0; | |
2788 | ex.X_add_symbol = NULL; | |
2789 | ex.X_op_symbol = NULL; | |
2790 | } | |
2791 | ||
2792 | else | |
2793 | #endif /* TE_PE */ | |
2794 | { | |
2795 | if ((reg_names_p | |
2796 | && (((operand->flags & PPC_OPERAND_CR_BIT) != 0) | |
2797 | || ((operand->flags & PPC_OPERAND_CR_REG) != 0))) | |
2798 | || !register_name (&ex)) | |
2799 | { | |
2800 | char save_lex = lex_type['%']; | |
2801 | ||
2802 | if (((operand->flags & PPC_OPERAND_CR_REG) != 0) | |
2803 | || (operand->flags & PPC_OPERAND_CR_BIT) != 0) | |
2804 | { | |
2805 | cr_operand = TRUE; | |
2806 | lex_type['%'] |= LEX_BEGIN_NAME; | |
2807 | } | |
2808 | expression (&ex); | |
2809 | cr_operand = FALSE; | |
2810 | lex_type['%'] = save_lex; | |
2811 | } | |
2812 | } | |
2813 | ||
2814 | str = input_line_pointer; | |
2815 | input_line_pointer = hold; | |
2816 | ||
2817 | if (ex.X_op == O_illegal) | |
2818 | as_bad (_("illegal operand")); | |
2819 | else if (ex.X_op == O_absent) | |
2820 | as_bad (_("missing operand")); | |
2821 | else if (ex.X_op == O_register) | |
2822 | { | |
2823 | insn = ppc_insert_operand (insn, operand, ex.X_add_number, | |
2824 | ppc_cpu, (char *) NULL, 0); | |
2825 | } | |
2826 | else if (ex.X_op == O_constant) | |
2827 | { | |
2828 | #ifdef OBJ_ELF | |
2829 | /* Allow @HA, @L, @H on constants. */ | |
2830 | bfd_reloc_code_real_type reloc; | |
2831 | char *orig_str = str; | |
2832 | ||
2833 | if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED) | |
2834 | switch (reloc) | |
2835 | { | |
2836 | default: | |
2837 | str = orig_str; | |
2838 | break; | |
2839 | ||
2840 | case BFD_RELOC_LO16: | |
2841 | /* X_unsigned is the default, so if the user has done | |
2842 | something which cleared it, we always produce a | |
2843 | signed value. */ | |
2844 | if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) | |
2845 | ex.X_add_number &= 0xffff; | |
2846 | else | |
2847 | ex.X_add_number = SEX16 (ex.X_add_number); | |
2848 | break; | |
2849 | ||
2850 | case BFD_RELOC_HI16: | |
2851 | if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) | |
2852 | ex.X_add_number = PPC_HI (ex.X_add_number); | |
2853 | else | |
2854 | ex.X_add_number = SEX16 (PPC_HI (ex.X_add_number)); | |
2855 | break; | |
2856 | ||
2857 | case BFD_RELOC_HI16_S: | |
2858 | if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) | |
2859 | ex.X_add_number = PPC_HA (ex.X_add_number); | |
2860 | else | |
2861 | ex.X_add_number = SEX16 (PPC_HA (ex.X_add_number)); | |
2862 | break; | |
2863 | ||
2864 | case BFD_RELOC_PPC64_HIGHER: | |
2865 | if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) | |
2866 | ex.X_add_number = PPC_HIGHER (ex.X_add_number); | |
2867 | else | |
2868 | ex.X_add_number = SEX16 (PPC_HIGHER (ex.X_add_number)); | |
2869 | break; | |
2870 | ||
2871 | case BFD_RELOC_PPC64_HIGHER_S: | |
2872 | if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) | |
2873 | ex.X_add_number = PPC_HIGHERA (ex.X_add_number); | |
2874 | else | |
2875 | ex.X_add_number = SEX16 (PPC_HIGHERA (ex.X_add_number)); | |
2876 | break; | |
2877 | ||
2878 | case BFD_RELOC_PPC64_HIGHEST: | |
2879 | if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) | |
2880 | ex.X_add_number = PPC_HIGHEST (ex.X_add_number); | |
2881 | else | |
2882 | ex.X_add_number = SEX16 (PPC_HIGHEST (ex.X_add_number)); | |
2883 | break; | |
2884 | ||
2885 | case BFD_RELOC_PPC64_HIGHEST_S: | |
2886 | if (ex.X_unsigned && ! (operand->flags & PPC_OPERAND_SIGNED)) | |
2887 | ex.X_add_number = PPC_HIGHESTA (ex.X_add_number); | |
2888 | else | |
2889 | ex.X_add_number = SEX16 (PPC_HIGHESTA (ex.X_add_number)); | |
2890 | break; | |
2891 | } | |
2892 | #endif /* OBJ_ELF */ | |
2893 | insn = ppc_insert_operand (insn, operand, ex.X_add_number, | |
2894 | ppc_cpu, (char *) NULL, 0); | |
2895 | } | |
2896 | else | |
2897 | { | |
2898 | bfd_reloc_code_real_type reloc = BFD_RELOC_UNUSED; | |
2899 | #ifdef OBJ_ELF | |
2900 | if (ex.X_op == O_symbol && str[0] == '(') | |
2901 | { | |
2902 | const char *sym_name = S_GET_NAME (ex.X_add_symbol); | |
2903 | if (sym_name[0] == '.') | |
2904 | ++sym_name; | |
2905 | ||
2906 | if (strcasecmp (sym_name, "__tls_get_addr") == 0) | |
2907 | { | |
2908 | expressionS tls_exp; | |
2909 | ||
2910 | hold = input_line_pointer; | |
2911 | input_line_pointer = str + 1; | |
2912 | expression (&tls_exp); | |
2913 | if (tls_exp.X_op == O_symbol) | |
2914 | { | |
2915 | reloc = BFD_RELOC_UNUSED; | |
2916 | if (strncasecmp (input_line_pointer, "@tlsgd)", 7) == 0) | |
2917 | { | |
2918 | reloc = BFD_RELOC_PPC_TLSGD; | |
2919 | input_line_pointer += 7; | |
2920 | } | |
2921 | else if (strncasecmp (input_line_pointer, "@tlsld)", 7) == 0) | |
2922 | { | |
2923 | reloc = BFD_RELOC_PPC_TLSLD; | |
2924 | input_line_pointer += 7; | |
2925 | } | |
2926 | if (reloc != BFD_RELOC_UNUSED) | |
2927 | { | |
2928 | SKIP_WHITESPACE (); | |
2929 | str = input_line_pointer; | |
2930 | ||
2931 | if (fc >= MAX_INSN_FIXUPS) | |
2932 | as_fatal (_("too many fixups")); | |
2933 | fixups[fc].exp = tls_exp; | |
2934 | fixups[fc].opindex = *opindex_ptr; | |
2935 | fixups[fc].reloc = reloc; | |
2936 | ++fc; | |
2937 | } | |
2938 | } | |
2939 | input_line_pointer = hold; | |
2940 | } | |
2941 | } | |
2942 | ||
2943 | if ((reloc = ppc_elf_suffix (&str, &ex)) != BFD_RELOC_UNUSED) | |
2944 | { | |
2945 | /* Some TLS tweaks. */ | |
2946 | switch (reloc) | |
2947 | { | |
2948 | default: | |
2949 | break; | |
2950 | ||
2951 | case BFD_RELOC_PPC_TLS: | |
2952 | if (!_bfd_elf_ppc_at_tls_transform (opcode->opcode, 0)) | |
2953 | as_bad (_("@tls may not be used with \"%s\" operands"), | |
2954 | opcode->name); | |
2955 | else if (operand->shift != 11) | |
2956 | as_bad (_("@tls may only be used in last operand")); | |
2957 | else | |
2958 | insn = ppc_insert_operand (insn, operand, | |
2959 | ppc_obj64 ? 13 : 2, | |
2960 | ppc_cpu, (char *) NULL, 0); | |
2961 | break; | |
2962 | ||
2963 | /* We'll only use the 32 (or 64) bit form of these relocations | |
2964 | in constants. Instructions get the 16 bit form. */ | |
2965 | case BFD_RELOC_PPC_DTPREL: | |
2966 | reloc = BFD_RELOC_PPC_DTPREL16; | |
2967 | break; | |
2968 | case BFD_RELOC_PPC_TPREL: | |
2969 | reloc = BFD_RELOC_PPC_TPREL16; | |
2970 | break; | |
2971 | } | |
2972 | ||
2973 | /* If VLE-mode convert LO/HI/HA relocations. */ | |
2974 | if (opcode->flags & PPC_OPCODE_VLE) | |
2975 | { | |
2976 | int tmp_insn = insn & opcode->mask; | |
2977 | ||
2978 | int use_d_reloc = (tmp_insn == E_OR2I_INSN | |
2979 | || tmp_insn == E_AND2I_DOT_INSN | |
2980 | || tmp_insn == E_OR2IS_INSN | |
2981 | || tmp_insn == E_LIS_INSN | |
2982 | || tmp_insn == E_AND2IS_DOT_INSN); | |
2983 | ||
2984 | ||
2985 | int use_a_reloc = (tmp_insn == E_ADD2I_DOT_INSN | |
2986 | || tmp_insn == E_ADD2IS_INSN | |
2987 | || tmp_insn == E_CMP16I_INSN | |
2988 | || tmp_insn == E_MULL2I_INSN | |
2989 | || tmp_insn == E_CMPL16I_INSN | |
2990 | || tmp_insn == E_CMPH16I_INSN | |
2991 | || tmp_insn == E_CMPHL16I_INSN); | |
2992 | ||
2993 | switch (reloc) | |
2994 | { | |
2995 | default: | |
2996 | break; | |
2997 | ||
2998 | case BFD_RELOC_PPC_EMB_SDA21: | |
2999 | reloc = BFD_RELOC_PPC_VLE_SDA21; | |
3000 | break; | |
3001 | ||
3002 | case BFD_RELOC_LO16: | |
3003 | if (use_d_reloc) | |
3004 | reloc = BFD_RELOC_PPC_VLE_LO16D; | |
3005 | else if (use_a_reloc) | |
3006 | reloc = BFD_RELOC_PPC_VLE_LO16A; | |
3007 | break; | |
3008 | ||
3009 | case BFD_RELOC_HI16: | |
3010 | if (use_d_reloc) | |
3011 | reloc = BFD_RELOC_PPC_VLE_HI16D; | |
3012 | else if (use_a_reloc) | |
3013 | reloc = BFD_RELOC_PPC_VLE_HI16A; | |
3014 | break; | |
3015 | ||
3016 | case BFD_RELOC_HI16_S: | |
3017 | if (use_d_reloc) | |
3018 | reloc = BFD_RELOC_PPC_VLE_HA16D; | |
3019 | else if (use_a_reloc) | |
3020 | reloc = BFD_RELOC_PPC_VLE_HA16A; | |
3021 | break; | |
3022 | ||
3023 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
3024 | if (use_d_reloc) | |
3025 | reloc = BFD_RELOC_PPC_VLE_SDAREL_LO16D; | |
3026 | break; | |
3027 | ||
3028 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
3029 | if (use_d_reloc) | |
3030 | reloc = BFD_RELOC_PPC_VLE_SDAREL_HI16D; | |
3031 | break; | |
3032 | ||
3033 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
3034 | if (use_d_reloc) | |
3035 | reloc = BFD_RELOC_PPC_VLE_SDAREL_HA16D; | |
3036 | break; | |
3037 | } | |
3038 | } | |
3039 | ||
3040 | /* For the absolute forms of branches, convert the PC | |
3041 | relative form back into the absolute. */ | |
3042 | if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0) | |
3043 | { | |
3044 | switch (reloc) | |
3045 | { | |
3046 | case BFD_RELOC_PPC_B26: | |
3047 | reloc = BFD_RELOC_PPC_BA26; | |
3048 | break; | |
3049 | case BFD_RELOC_PPC_B16: | |
3050 | reloc = BFD_RELOC_PPC_BA16; | |
3051 | break; | |
3052 | case BFD_RELOC_PPC_B16_BRTAKEN: | |
3053 | reloc = BFD_RELOC_PPC_BA16_BRTAKEN; | |
3054 | break; | |
3055 | case BFD_RELOC_PPC_B16_BRNTAKEN: | |
3056 | reloc = BFD_RELOC_PPC_BA16_BRNTAKEN; | |
3057 | break; | |
3058 | default: | |
3059 | break; | |
3060 | } | |
3061 | } | |
3062 | ||
3063 | switch (reloc) | |
3064 | { | |
3065 | case BFD_RELOC_PPC_TOC16: | |
3066 | toc_reloc_types |= has_small_toc_reloc; | |
3067 | break; | |
3068 | case BFD_RELOC_PPC64_TOC16_LO: | |
3069 | case BFD_RELOC_PPC64_TOC16_HI: | |
3070 | case BFD_RELOC_PPC64_TOC16_HA: | |
3071 | toc_reloc_types |= has_large_toc_reloc; | |
3072 | break; | |
3073 | default: | |
3074 | break; | |
3075 | } | |
3076 | ||
3077 | if ((operand->flags & (PPC_OPERAND_DS | PPC_OPERAND_DQ)) != 0) | |
3078 | { | |
3079 | switch (reloc) | |
3080 | { | |
3081 | case BFD_RELOC_16: | |
3082 | reloc = BFD_RELOC_PPC64_ADDR16_DS; | |
3083 | break; | |
3084 | case BFD_RELOC_LO16: | |
3085 | reloc = BFD_RELOC_PPC64_ADDR16_LO_DS; | |
3086 | break; | |
3087 | case BFD_RELOC_16_GOTOFF: | |
3088 | reloc = BFD_RELOC_PPC64_GOT16_DS; | |
3089 | break; | |
3090 | case BFD_RELOC_LO16_GOTOFF: | |
3091 | reloc = BFD_RELOC_PPC64_GOT16_LO_DS; | |
3092 | break; | |
3093 | case BFD_RELOC_LO16_PLTOFF: | |
3094 | reloc = BFD_RELOC_PPC64_PLT16_LO_DS; | |
3095 | break; | |
3096 | case BFD_RELOC_16_BASEREL: | |
3097 | reloc = BFD_RELOC_PPC64_SECTOFF_DS; | |
3098 | break; | |
3099 | case BFD_RELOC_LO16_BASEREL: | |
3100 | reloc = BFD_RELOC_PPC64_SECTOFF_LO_DS; | |
3101 | break; | |
3102 | case BFD_RELOC_PPC_TOC16: | |
3103 | reloc = BFD_RELOC_PPC64_TOC16_DS; | |
3104 | break; | |
3105 | case BFD_RELOC_PPC64_TOC16_LO: | |
3106 | reloc = BFD_RELOC_PPC64_TOC16_LO_DS; | |
3107 | break; | |
3108 | case BFD_RELOC_PPC64_PLTGOT16: | |
3109 | reloc = BFD_RELOC_PPC64_PLTGOT16_DS; | |
3110 | break; | |
3111 | case BFD_RELOC_PPC64_PLTGOT16_LO: | |
3112 | reloc = BFD_RELOC_PPC64_PLTGOT16_LO_DS; | |
3113 | break; | |
3114 | case BFD_RELOC_PPC_DTPREL16: | |
3115 | reloc = BFD_RELOC_PPC64_DTPREL16_DS; | |
3116 | break; | |
3117 | case BFD_RELOC_PPC_DTPREL16_LO: | |
3118 | reloc = BFD_RELOC_PPC64_DTPREL16_LO_DS; | |
3119 | break; | |
3120 | case BFD_RELOC_PPC_TPREL16: | |
3121 | reloc = BFD_RELOC_PPC64_TPREL16_DS; | |
3122 | break; | |
3123 | case BFD_RELOC_PPC_TPREL16_LO: | |
3124 | reloc = BFD_RELOC_PPC64_TPREL16_LO_DS; | |
3125 | break; | |
3126 | case BFD_RELOC_PPC_GOT_DTPREL16: | |
3127 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: | |
3128 | case BFD_RELOC_PPC_GOT_TPREL16: | |
3129 | case BFD_RELOC_PPC_GOT_TPREL16_LO: | |
3130 | break; | |
3131 | default: | |
3132 | as_bad (_("unsupported relocation for DS offset field")); | |
3133 | break; | |
3134 | } | |
3135 | } | |
3136 | } | |
3137 | #endif /* OBJ_ELF */ | |
3138 | ||
3139 | if (reloc != BFD_RELOC_UNUSED) | |
3140 | ; | |
3141 | /* Determine a BFD reloc value based on the operand information. | |
3142 | We are only prepared to turn a few of the operands into | |
3143 | relocs. */ | |
3144 | else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 | |
3145 | && operand->bitm == 0x3fffffc | |
3146 | && operand->shift == 0) | |
3147 | reloc = BFD_RELOC_PPC_B26; | |
3148 | else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 | |
3149 | && operand->bitm == 0xfffc | |
3150 | && operand->shift == 0) | |
3151 | reloc = BFD_RELOC_PPC_B16; | |
3152 | else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 | |
3153 | && operand->bitm == 0x1fe | |
3154 | && operand->shift == -1) | |
3155 | reloc = BFD_RELOC_PPC_VLE_REL8; | |
3156 | else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 | |
3157 | && operand->bitm == 0xfffe | |
3158 | && operand->shift == 0) | |
3159 | reloc = BFD_RELOC_PPC_VLE_REL15; | |
3160 | else if ((operand->flags & PPC_OPERAND_RELATIVE) != 0 | |
3161 | && operand->bitm == 0x1fffffe | |
3162 | && operand->shift == 0) | |
3163 | reloc = BFD_RELOC_PPC_VLE_REL24; | |
3164 | else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0 | |
3165 | && operand->bitm == 0x3fffffc | |
3166 | && operand->shift == 0) | |
3167 | reloc = BFD_RELOC_PPC_BA26; | |
3168 | else if ((operand->flags & PPC_OPERAND_ABSOLUTE) != 0 | |
3169 | && operand->bitm == 0xfffc | |
3170 | && operand->shift == 0) | |
3171 | reloc = BFD_RELOC_PPC_BA16; | |
3172 | #if defined (OBJ_XCOFF) || defined (OBJ_ELF) | |
3173 | else if ((operand->flags & PPC_OPERAND_PARENS) != 0 | |
3174 | && (operand->bitm & 0xfff0) == 0xfff0 | |
3175 | && operand->shift == 0) | |
3176 | { | |
3177 | if (ppc_is_toc_sym (ex.X_add_symbol)) | |
3178 | { | |
3179 | reloc = BFD_RELOC_PPC_TOC16; | |
3180 | #ifdef OBJ_ELF | |
3181 | if (ppc_obj64 | |
3182 | && (operand->flags & PPC_OPERAND_DS) != 0) | |
3183 | reloc = BFD_RELOC_PPC64_TOC16_DS; | |
3184 | #endif | |
3185 | } | |
3186 | else | |
3187 | { | |
3188 | reloc = BFD_RELOC_16; | |
3189 | #ifdef OBJ_ELF | |
3190 | if (ppc_obj64 | |
3191 | && (operand->flags & PPC_OPERAND_DS) != 0) | |
3192 | reloc = BFD_RELOC_PPC64_ADDR16_DS; | |
3193 | #endif | |
3194 | } | |
3195 | } | |
3196 | #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */ | |
3197 | ||
3198 | /* We need to generate a fixup for this expression. */ | |
3199 | if (fc >= MAX_INSN_FIXUPS) | |
3200 | as_fatal (_("too many fixups")); | |
3201 | fixups[fc].exp = ex; | |
3202 | fixups[fc].opindex = *opindex_ptr; | |
3203 | fixups[fc].reloc = reloc; | |
3204 | ++fc; | |
3205 | } | |
3206 | ||
3207 | if (need_paren) | |
3208 | { | |
3209 | endc = ')'; | |
3210 | need_paren = 0; | |
3211 | /* If expecting more operands, then we want to see "),". */ | |
3212 | if (*str == endc && opindex_ptr[1] != 0) | |
3213 | { | |
3214 | do | |
3215 | ++str; | |
3216 | while (ISSPACE (*str)); | |
3217 | endc = ','; | |
3218 | } | |
3219 | } | |
3220 | else if ((operand->flags & PPC_OPERAND_PARENS) != 0) | |
3221 | { | |
3222 | endc = '('; | |
3223 | need_paren = 1; | |
3224 | } | |
3225 | else | |
3226 | endc = ','; | |
3227 | ||
3228 | /* The call to expression should have advanced str past any | |
3229 | whitespace. */ | |
3230 | if (*str != endc | |
3231 | && (endc != ',' || *str != '\0')) | |
3232 | { | |
3233 | if (*str == '\0') | |
3234 | as_bad (_("syntax error; end of line, expected `%c'"), endc); | |
3235 | else | |
3236 | as_bad (_("syntax error; found `%c', expected `%c'"), *str, endc); | |
3237 | break; | |
3238 | } | |
3239 | ||
3240 | if (*str != '\0') | |
3241 | ++str; | |
3242 | } | |
3243 | ||
3244 | while (ISSPACE (*str)) | |
3245 | ++str; | |
3246 | ||
3247 | if (*str != '\0') | |
3248 | as_bad (_("junk at end of line: `%s'"), str); | |
3249 | ||
3250 | #ifdef OBJ_ELF | |
3251 | /* Do we need/want an APUinfo section? */ | |
3252 | if ((ppc_cpu & (PPC_OPCODE_E500 | PPC_OPCODE_E500MC | PPC_OPCODE_VLE)) != 0) | |
3253 | { | |
3254 | /* These are all version "1". */ | |
3255 | if (opcode->flags & PPC_OPCODE_SPE) | |
3256 | ppc_apuinfo_section_add (PPC_APUINFO_SPE, 1); | |
3257 | if (opcode->flags & PPC_OPCODE_ISEL) | |
3258 | ppc_apuinfo_section_add (PPC_APUINFO_ISEL, 1); | |
3259 | if (opcode->flags & PPC_OPCODE_EFS) | |
3260 | ppc_apuinfo_section_add (PPC_APUINFO_EFS, 1); | |
3261 | if (opcode->flags & PPC_OPCODE_BRLOCK) | |
3262 | ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK, 1); | |
3263 | if (opcode->flags & PPC_OPCODE_PMR) | |
3264 | ppc_apuinfo_section_add (PPC_APUINFO_PMR, 1); | |
3265 | if (opcode->flags & PPC_OPCODE_CACHELCK) | |
3266 | ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK, 1); | |
3267 | if (opcode->flags & PPC_OPCODE_RFMCI) | |
3268 | ppc_apuinfo_section_add (PPC_APUINFO_RFMCI, 1); | |
3269 | if (opcode->flags & PPC_OPCODE_VLE) | |
3270 | ppc_apuinfo_section_add (PPC_APUINFO_VLE, 1); | |
3271 | } | |
3272 | #endif | |
3273 | ||
3274 | /* Write out the instruction. */ | |
3275 | /* Differentiate between two and four byte insns. */ | |
3276 | if (ppc_mach () == bfd_mach_ppc_vle) | |
3277 | { | |
3278 | if (PPC_OP_SE_VLE (insn)) | |
3279 | insn_length = 2; | |
3280 | else | |
3281 | insn_length = 4; | |
3282 | addr_mod = frag_now_fix () & 1; | |
3283 | } | |
3284 | else | |
3285 | { | |
3286 | insn_length = 4; | |
3287 | addr_mod = frag_now_fix () & 3; | |
3288 | } | |
3289 | /* All instructions can start on a 2 byte boundary for VLE. */ | |
3290 | f = frag_more (insn_length); | |
3291 | if (frag_now->has_code && frag_now->insn_addr != addr_mod) | |
3292 | { | |
3293 | if (ppc_mach() == bfd_mach_ppc_vle) | |
3294 | as_bad (_("instruction address is not a multiple of 2")); | |
3295 | else | |
3296 | as_bad (_("instruction address is not a multiple of 4")); | |
3297 | } | |
3298 | frag_now->insn_addr = addr_mod; | |
3299 | frag_now->has_code = 1; | |
3300 | md_number_to_chars (f, insn, insn_length); | |
3301 | ||
3302 | #ifdef OBJ_ELF | |
3303 | dwarf2_emit_insn (insn_length); | |
3304 | #endif | |
3305 | ||
3306 | /* Create any fixups. */ | |
3307 | for (i = 0; i < fc; i++) | |
3308 | { | |
3309 | fixS *fixP; | |
3310 | if (fixups[i].reloc != BFD_RELOC_UNUSED) | |
3311 | { | |
3312 | reloc_howto_type *reloc_howto; | |
3313 | int size; | |
3314 | int offset; | |
3315 | ||
3316 | reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc); | |
3317 | if (!reloc_howto) | |
3318 | abort (); | |
3319 | ||
3320 | size = bfd_get_reloc_size (reloc_howto); | |
3321 | offset = target_big_endian ? (insn_length - size) : 0; | |
3322 | ||
3323 | if (size < 1 || size > 4) | |
3324 | abort (); | |
3325 | ||
3326 | fixP = fix_new_exp (frag_now, | |
3327 | f - frag_now->fr_literal + offset, | |
3328 | size, | |
3329 | &fixups[i].exp, | |
3330 | reloc_howto->pc_relative, | |
3331 | fixups[i].reloc); | |
3332 | } | |
3333 | else | |
3334 | { | |
3335 | const struct powerpc_operand *operand; | |
3336 | ||
3337 | operand = &powerpc_operands[fixups[i].opindex]; | |
3338 | fixP = fix_new_exp (frag_now, | |
3339 | f - frag_now->fr_literal, | |
3340 | insn_length, | |
3341 | &fixups[i].exp, | |
3342 | (operand->flags & PPC_OPERAND_RELATIVE) != 0, | |
3343 | BFD_RELOC_UNUSED); | |
3344 | } | |
3345 | fixP->fx_pcrel_adjust = fixups[i].opindex; | |
3346 | } | |
3347 | } | |
3348 | ||
3349 | /* Handle a macro. Gather all the operands, transform them as | |
3350 | described by the macro, and call md_assemble recursively. All the | |
3351 | operands are separated by commas; we don't accept parentheses | |
3352 | around operands here. */ | |
3353 | ||
3354 | static void | |
3355 | ppc_macro (char *str, const struct powerpc_macro *macro) | |
3356 | { | |
3357 | char *operands[10]; | |
3358 | unsigned int count; | |
3359 | char *s; | |
3360 | unsigned int len; | |
3361 | const char *format; | |
3362 | unsigned int arg; | |
3363 | char *send; | |
3364 | char *complete; | |
3365 | ||
3366 | /* Gather the users operands into the operands array. */ | |
3367 | count = 0; | |
3368 | s = str; | |
3369 | while (1) | |
3370 | { | |
3371 | if (count >= sizeof operands / sizeof operands[0]) | |
3372 | break; | |
3373 | operands[count++] = s; | |
3374 | s = strchr (s, ','); | |
3375 | if (s == (char *) NULL) | |
3376 | break; | |
3377 | *s++ = '\0'; | |
3378 | } | |
3379 | ||
3380 | if (count != macro->operands) | |
3381 | { | |
3382 | as_bad (_("wrong number of operands")); | |
3383 | return; | |
3384 | } | |
3385 | ||
3386 | /* Work out how large the string must be (the size is unbounded | |
3387 | because it includes user input). */ | |
3388 | len = 0; | |
3389 | format = macro->format; | |
3390 | while (*format != '\0') | |
3391 | { | |
3392 | if (*format != '%') | |
3393 | { | |
3394 | ++len; | |
3395 | ++format; | |
3396 | } | |
3397 | else | |
3398 | { | |
3399 | arg = strtol (format + 1, &send, 10); | |
3400 | know (send != format && arg < count); | |
3401 | len += strlen (operands[arg]); | |
3402 | format = send; | |
3403 | } | |
3404 | } | |
3405 | ||
3406 | /* Put the string together. */ | |
3407 | complete = s = (char *) alloca (len + 1); | |
3408 | format = macro->format; | |
3409 | while (*format != '\0') | |
3410 | { | |
3411 | if (*format != '%') | |
3412 | *s++ = *format++; | |
3413 | else | |
3414 | { | |
3415 | arg = strtol (format + 1, &send, 10); | |
3416 | strcpy (s, operands[arg]); | |
3417 | s += strlen (s); | |
3418 | format = send; | |
3419 | } | |
3420 | } | |
3421 | *s = '\0'; | |
3422 | ||
3423 | /* Assemble the constructed instruction. */ | |
3424 | md_assemble (complete); | |
3425 | } | |
3426 | \f | |
3427 | #ifdef OBJ_ELF | |
3428 | /* For ELF, add support for SHT_ORDERED. */ | |
3429 | ||
3430 | int | |
3431 | ppc_section_type (char *str, size_t len) | |
3432 | { | |
3433 | if (len == 7 && strncmp (str, "ordered", 7) == 0) | |
3434 | return SHT_ORDERED; | |
3435 | ||
3436 | return -1; | |
3437 | } | |
3438 | ||
3439 | int | |
3440 | ppc_section_flags (flagword flags, bfd_vma attr ATTRIBUTE_UNUSED, int type) | |
3441 | { | |
3442 | if (type == SHT_ORDERED) | |
3443 | flags |= SEC_ALLOC | SEC_LOAD | SEC_SORT_ENTRIES; | |
3444 | ||
3445 | return flags; | |
3446 | } | |
3447 | #endif /* OBJ_ELF */ | |
3448 | ||
3449 | \f | |
3450 | /* Pseudo-op handling. */ | |
3451 | ||
3452 | /* The .byte pseudo-op. This is similar to the normal .byte | |
3453 | pseudo-op, but it can also take a single ASCII string. */ | |
3454 | ||
3455 | static void | |
3456 | ppc_byte (int ignore ATTRIBUTE_UNUSED) | |
3457 | { | |
3458 | if (*input_line_pointer != '\"') | |
3459 | { | |
3460 | cons (1); | |
3461 | return; | |
3462 | } | |
3463 | ||
3464 | /* Gather characters. A real double quote is doubled. Unusual | |
3465 | characters are not permitted. */ | |
3466 | ++input_line_pointer; | |
3467 | while (1) | |
3468 | { | |
3469 | char c; | |
3470 | ||
3471 | c = *input_line_pointer++; | |
3472 | ||
3473 | if (c == '\"') | |
3474 | { | |
3475 | if (*input_line_pointer != '\"') | |
3476 | break; | |
3477 | ++input_line_pointer; | |
3478 | } | |
3479 | ||
3480 | FRAG_APPEND_1_CHAR (c); | |
3481 | } | |
3482 | ||
3483 | demand_empty_rest_of_line (); | |
3484 | } | |
3485 | \f | |
3486 | #ifdef OBJ_XCOFF | |
3487 | ||
3488 | /* XCOFF specific pseudo-op handling. */ | |
3489 | ||
3490 | /* This is set if we are creating a .stabx symbol, since we don't want | |
3491 | to handle symbol suffixes for such symbols. */ | |
3492 | static bfd_boolean ppc_stab_symbol; | |
3493 | ||
3494 | /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common | |
3495 | symbols in the .bss segment as though they were local common | |
3496 | symbols, and uses a different smclas. The native Aix 4.3.3 assembler | |
3497 | aligns .comm and .lcomm to 4 bytes. */ | |
3498 | ||
3499 | static void | |
3500 | ppc_comm (int lcomm) | |
3501 | { | |
3502 | asection *current_seg = now_seg; | |
3503 | subsegT current_subseg = now_subseg; | |
3504 | char *name; | |
3505 | char endc; | |
3506 | char *end_name; | |
3507 | offsetT size; | |
3508 | offsetT align; | |
3509 | symbolS *lcomm_sym = NULL; | |
3510 | symbolS *sym; | |
3511 | char *pfrag; | |
3512 | ||
3513 | name = input_line_pointer; | |
3514 | endc = get_symbol_end (); | |
3515 | end_name = input_line_pointer; | |
3516 | *end_name = endc; | |
3517 | ||
3518 | if (*input_line_pointer != ',') | |
3519 | { | |
3520 | as_bad (_("missing size")); | |
3521 | ignore_rest_of_line (); | |
3522 | return; | |
3523 | } | |
3524 | ++input_line_pointer; | |
3525 | ||
3526 | size = get_absolute_expression (); | |
3527 | if (size < 0) | |
3528 | { | |
3529 | as_bad (_("negative size")); | |
3530 | ignore_rest_of_line (); | |
3531 | return; | |
3532 | } | |
3533 | ||
3534 | if (! lcomm) | |
3535 | { | |
3536 | /* The third argument to .comm is the alignment. */ | |
3537 | if (*input_line_pointer != ',') | |
3538 | align = 2; | |
3539 | else | |
3540 | { | |
3541 | ++input_line_pointer; | |
3542 | align = get_absolute_expression (); | |
3543 | if (align <= 0) | |
3544 | { | |
3545 | as_warn (_("ignoring bad alignment")); | |
3546 | align = 2; | |
3547 | } | |
3548 | } | |
3549 | } | |
3550 | else | |
3551 | { | |
3552 | char *lcomm_name; | |
3553 | char lcomm_endc; | |
3554 | ||
3555 | if (size <= 4) | |
3556 | align = 2; | |
3557 | else | |
3558 | align = 3; | |
3559 | ||
3560 | /* The third argument to .lcomm appears to be the real local | |
3561 | common symbol to create. References to the symbol named in | |
3562 | the first argument are turned into references to the third | |
3563 | argument. */ | |
3564 | if (*input_line_pointer != ',') | |
3565 | { | |
3566 | as_bad (_("missing real symbol name")); | |
3567 | ignore_rest_of_line (); | |
3568 | return; | |
3569 | } | |
3570 | ++input_line_pointer; | |
3571 | ||
3572 | lcomm_name = input_line_pointer; | |
3573 | lcomm_endc = get_symbol_end (); | |
3574 | ||
3575 | lcomm_sym = symbol_find_or_make (lcomm_name); | |
3576 | ||
3577 | *input_line_pointer = lcomm_endc; | |
3578 | } | |
3579 | ||
3580 | *end_name = '\0'; | |
3581 | sym = symbol_find_or_make (name); | |
3582 | *end_name = endc; | |
3583 | ||
3584 | if (S_IS_DEFINED (sym) | |
3585 | || S_GET_VALUE (sym) != 0) | |
3586 | { | |
3587 | as_bad (_("attempt to redefine symbol")); | |
3588 | ignore_rest_of_line (); | |
3589 | return; | |
3590 | } | |
3591 | ||
3592 | record_alignment (bss_section, align); | |
3593 | ||
3594 | if (! lcomm | |
3595 | || ! S_IS_DEFINED (lcomm_sym)) | |
3596 | { | |
3597 | symbolS *def_sym; | |
3598 | offsetT def_size; | |
3599 | ||
3600 | if (! lcomm) | |
3601 | { | |
3602 | def_sym = sym; | |
3603 | def_size = size; | |
3604 | S_SET_EXTERNAL (sym); | |
3605 | } | |
3606 | else | |
3607 | { | |
3608 | symbol_get_tc (lcomm_sym)->output = 1; | |
3609 | def_sym = lcomm_sym; | |
3610 | def_size = 0; | |
3611 | } | |
3612 | ||
3613 | subseg_set (bss_section, 1); | |
3614 | frag_align (align, 0, 0); | |
3615 | ||
3616 | symbol_set_frag (def_sym, frag_now); | |
3617 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, def_sym, | |
3618 | def_size, (char *) NULL); | |
3619 | *pfrag = 0; | |
3620 | S_SET_SEGMENT (def_sym, bss_section); | |
3621 | symbol_get_tc (def_sym)->align = align; | |
3622 | } | |
3623 | else if (lcomm) | |
3624 | { | |
3625 | /* Align the size of lcomm_sym. */ | |
3626 | symbol_get_frag (lcomm_sym)->fr_offset = | |
3627 | ((symbol_get_frag (lcomm_sym)->fr_offset + (1 << align) - 1) | |
3628 | &~ ((1 << align) - 1)); | |
3629 | if (align > symbol_get_tc (lcomm_sym)->align) | |
3630 | symbol_get_tc (lcomm_sym)->align = align; | |
3631 | } | |
3632 | ||
3633 | if (lcomm) | |
3634 | { | |
3635 | /* Make sym an offset from lcomm_sym. */ | |
3636 | S_SET_SEGMENT (sym, bss_section); | |
3637 | symbol_set_frag (sym, symbol_get_frag (lcomm_sym)); | |
3638 | S_SET_VALUE (sym, symbol_get_frag (lcomm_sym)->fr_offset); | |
3639 | symbol_get_frag (lcomm_sym)->fr_offset += size; | |
3640 | } | |
3641 | ||
3642 | subseg_set (current_seg, current_subseg); | |
3643 | ||
3644 | demand_empty_rest_of_line (); | |
3645 | } | |
3646 | ||
3647 | /* The .csect pseudo-op. This switches us into a different | |
3648 | subsegment. The first argument is a symbol whose value is the | |
3649 | start of the .csect. In COFF, csect symbols get special aux | |
3650 | entries defined by the x_csect field of union internal_auxent. The | |
3651 | optional second argument is the alignment (the default is 2). */ | |
3652 | ||
3653 | static void | |
3654 | ppc_csect (int ignore ATTRIBUTE_UNUSED) | |
3655 | { | |
3656 | char *name; | |
3657 | char endc; | |
3658 | symbolS *sym; | |
3659 | offsetT align; | |
3660 | ||
3661 | name = input_line_pointer; | |
3662 | endc = get_symbol_end (); | |
3663 | ||
3664 | sym = symbol_find_or_make (name); | |
3665 | ||
3666 | *input_line_pointer = endc; | |
3667 | ||
3668 | if (S_GET_NAME (sym)[0] == '\0') | |
3669 | { | |
3670 | /* An unnamed csect is assumed to be [PR]. */ | |
3671 | symbol_get_tc (sym)->symbol_class = XMC_PR; | |
3672 | } | |
3673 | ||
3674 | align = 2; | |
3675 | if (*input_line_pointer == ',') | |
3676 | { | |
3677 | ++input_line_pointer; | |
3678 | align = get_absolute_expression (); | |
3679 | } | |
3680 | ||
3681 | ppc_change_csect (sym, align); | |
3682 | ||
3683 | demand_empty_rest_of_line (); | |
3684 | } | |
3685 | ||
3686 | /* Change to a different csect. */ | |
3687 | ||
3688 | static void | |
3689 | ppc_change_csect (symbolS *sym, offsetT align) | |
3690 | { | |
3691 | if (S_IS_DEFINED (sym)) | |
3692 | subseg_set (S_GET_SEGMENT (sym), symbol_get_tc (sym)->subseg); | |
3693 | else | |
3694 | { | |
3695 | symbolS **list_ptr; | |
3696 | int after_toc; | |
3697 | int hold_chunksize; | |
3698 | symbolS *list; | |
3699 | int is_code; | |
3700 | segT sec; | |
3701 | ||
3702 | /* This is a new csect. We need to look at the symbol class to | |
3703 | figure out whether it should go in the text section or the | |
3704 | data section. */ | |
3705 | after_toc = 0; | |
3706 | is_code = 0; | |
3707 | switch (symbol_get_tc (sym)->symbol_class) | |
3708 | { | |
3709 | case XMC_PR: | |
3710 | case XMC_RO: | |
3711 | case XMC_DB: | |
3712 | case XMC_GL: | |
3713 | case XMC_XO: | |
3714 | case XMC_SV: | |
3715 | case XMC_TI: | |
3716 | case XMC_TB: | |
3717 | S_SET_SEGMENT (sym, text_section); | |
3718 | symbol_get_tc (sym)->subseg = ppc_text_subsegment; | |
3719 | ++ppc_text_subsegment; | |
3720 | list_ptr = &ppc_text_csects; | |
3721 | is_code = 1; | |
3722 | break; | |
3723 | case XMC_RW: | |
3724 | case XMC_TC0: | |
3725 | case XMC_TC: | |
3726 | case XMC_DS: | |
3727 | case XMC_UA: | |
3728 | case XMC_BS: | |
3729 | case XMC_UC: | |
3730 | if (ppc_toc_csect != NULL | |
3731 | && (symbol_get_tc (ppc_toc_csect)->subseg + 1 | |
3732 | == ppc_data_subsegment)) | |
3733 | after_toc = 1; | |
3734 | S_SET_SEGMENT (sym, data_section); | |
3735 | symbol_get_tc (sym)->subseg = ppc_data_subsegment; | |
3736 | ++ppc_data_subsegment; | |
3737 | list_ptr = &ppc_data_csects; | |
3738 | break; | |
3739 | default: | |
3740 | abort (); | |
3741 | } | |
3742 | ||
3743 | /* We set the obstack chunk size to a small value before | |
3744 | changing subsegments, so that we don't use a lot of memory | |
3745 | space for what may be a small section. */ | |
3746 | hold_chunksize = chunksize; | |
3747 | chunksize = 64; | |
3748 | ||
3749 | sec = subseg_new (segment_name (S_GET_SEGMENT (sym)), | |
3750 | symbol_get_tc (sym)->subseg); | |
3751 | ||
3752 | chunksize = hold_chunksize; | |
3753 | ||
3754 | if (after_toc) | |
3755 | ppc_after_toc_frag = frag_now; | |
3756 | ||
3757 | record_alignment (sec, align); | |
3758 | if (is_code) | |
3759 | frag_align_code (align, 0); | |
3760 | else | |
3761 | frag_align (align, 0, 0); | |
3762 | ||
3763 | symbol_set_frag (sym, frag_now); | |
3764 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); | |
3765 | ||
3766 | symbol_get_tc (sym)->align = align; | |
3767 | symbol_get_tc (sym)->output = 1; | |
3768 | symbol_get_tc (sym)->within = sym; | |
3769 | ||
3770 | for (list = *list_ptr; | |
3771 | symbol_get_tc (list)->next != (symbolS *) NULL; | |
3772 | list = symbol_get_tc (list)->next) | |
3773 | ; | |
3774 | symbol_get_tc (list)->next = sym; | |
3775 | ||
3776 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
3777 | symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP, | |
3778 | &symbol_lastP); | |
3779 | } | |
3780 | ||
3781 | ppc_current_csect = sym; | |
3782 | } | |
3783 | ||
3784 | static void | |
3785 | ppc_change_debug_section (unsigned int idx, subsegT subseg) | |
3786 | { | |
3787 | segT sec; | |
3788 | flagword oldflags; | |
3789 | const struct xcoff_dwsect_name *dw = &xcoff_dwsect_names[idx]; | |
3790 | ||
3791 | sec = subseg_new (dw->name, subseg); | |
3792 | oldflags = bfd_get_section_flags (stdoutput, sec); | |
3793 | if (oldflags == SEC_NO_FLAGS) | |
3794 | { | |
3795 | /* Just created section. */ | |
3796 | gas_assert (dw_sections[idx].sect == NULL); | |
3797 | ||
3798 | bfd_set_section_flags (stdoutput, sec, SEC_DEBUGGING); | |
3799 | bfd_set_section_alignment (stdoutput, sec, 0); | |
3800 | dw_sections[idx].sect = sec; | |
3801 | } | |
3802 | ||
3803 | /* Not anymore in a csect. */ | |
3804 | ppc_current_csect = NULL; | |
3805 | } | |
3806 | ||
3807 | /* The .dwsect pseudo-op. Defines a DWARF section. Syntax is: | |
3808 | .dwsect flag [, opt-label ] | |
3809 | */ | |
3810 | ||
3811 | static void | |
3812 | ppc_dwsect (int ignore ATTRIBUTE_UNUSED) | |
3813 | { | |
3814 | offsetT flag; | |
3815 | symbolS *opt_label; | |
3816 | const struct xcoff_dwsect_name *dw; | |
3817 | struct dw_subsection *subseg; | |
3818 | struct dw_section *dws; | |
3819 | int i; | |
3820 | ||
3821 | /* Find section. */ | |
3822 | flag = get_absolute_expression (); | |
3823 | dw = NULL; | |
3824 | for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++) | |
3825 | if (xcoff_dwsect_names[i].flag == flag) | |
3826 | { | |
3827 | dw = &xcoff_dwsect_names[i]; | |
3828 | break; | |
3829 | } | |
3830 | ||
3831 | /* Parse opt-label. */ | |
3832 | if (*input_line_pointer == ',') | |
3833 | { | |
3834 | const char *label; | |
3835 | char c; | |
3836 | ||
3837 | ++input_line_pointer; | |
3838 | ||
3839 | label = input_line_pointer; | |
3840 | c = get_symbol_end (); | |
3841 | opt_label = symbol_find_or_make (label); | |
3842 | *input_line_pointer = c; | |
3843 | } | |
3844 | else | |
3845 | opt_label = NULL; | |
3846 | ||
3847 | demand_empty_rest_of_line (); | |
3848 | ||
3849 | /* Return now in case of unknown subsection. */ | |
3850 | if (dw == NULL) | |
3851 | { | |
3852 | as_bad (_("no known dwarf XCOFF section for flag 0x%08x\n"), | |
3853 | (unsigned)flag); | |
3854 | return; | |
3855 | } | |
3856 | ||
3857 | /* Find the subsection. */ | |
3858 | dws = &dw_sections[i]; | |
3859 | subseg = NULL; | |
3860 | if (opt_label != NULL && S_IS_DEFINED (opt_label)) | |
3861 | { | |
3862 | /* Sanity check (note that in theory S_GET_SEGMENT mustn't be null). */ | |
3863 | if (dws->sect == NULL || S_GET_SEGMENT (opt_label) != dws->sect) | |
3864 | { | |
3865 | as_bad (_("label %s was not defined in this dwarf section"), | |
3866 | S_GET_NAME (opt_label)); | |
3867 | subseg = dws->anon_subseg; | |
3868 | opt_label = NULL; | |
3869 | } | |
3870 | else | |
3871 | subseg = symbol_get_tc (opt_label)->u.dw; | |
3872 | } | |
3873 | ||
3874 | if (subseg != NULL) | |
3875 | { | |
3876 | /* Switch to the subsection. */ | |
3877 | ppc_change_debug_section (i, subseg->subseg); | |
3878 | } | |
3879 | else | |
3880 | { | |
3881 | /* Create a new dw subsection. */ | |
3882 | subseg = (struct dw_subsection *) | |
3883 | xmalloc (sizeof (struct dw_subsection)); | |
3884 | ||
3885 | if (opt_label == NULL) | |
3886 | { | |
3887 | /* The anonymous one. */ | |
3888 | subseg->subseg = 0; | |
3889 | subseg->link = NULL; | |
3890 | dws->anon_subseg = subseg; | |
3891 | } | |
3892 | else | |
3893 | { | |
3894 | /* A named one. */ | |
3895 | if (dws->list_subseg != NULL) | |
3896 | subseg->subseg = dws->list_subseg->subseg + 1; | |
3897 | else | |
3898 | subseg->subseg = 1; | |
3899 | ||
3900 | subseg->link = dws->list_subseg; | |
3901 | dws->list_subseg = subseg; | |
3902 | symbol_get_tc (opt_label)->u.dw = subseg; | |
3903 | } | |
3904 | ||
3905 | ppc_change_debug_section (i, subseg->subseg); | |
3906 | ||
3907 | if (dw->def_size) | |
3908 | { | |
3909 | /* Add the length field. */ | |
3910 | expressionS *exp = &subseg->end_exp; | |
3911 | int sz; | |
3912 | ||
3913 | if (opt_label != NULL) | |
3914 | symbol_set_value_now (opt_label); | |
3915 | ||
3916 | /* Add the length field. Note that according to the AIX assembler | |
3917 | manual, the size of the length field is 4 for powerpc32 but | |
3918 | 12 for powerpc64. */ | |
3919 | if (ppc_obj64) | |
3920 | { | |
3921 | /* Write the 64bit marker. */ | |
3922 | md_number_to_chars (frag_more (4), -1, 4); | |
3923 | } | |
3924 | ||
3925 | exp->X_op = O_subtract; | |
3926 | exp->X_op_symbol = symbol_temp_new_now (); | |
3927 | exp->X_add_symbol = symbol_temp_make (); | |
3928 | ||
3929 | sz = ppc_obj64 ? 8 : 4; | |
3930 | exp->X_add_number = -sz; | |
3931 | emit_expr (exp, sz); | |
3932 | } | |
3933 | } | |
3934 | } | |
3935 | ||
3936 | /* This function handles the .text and .data pseudo-ops. These | |
3937 | pseudo-ops aren't really used by XCOFF; we implement them for the | |
3938 | convenience of people who aren't used to XCOFF. */ | |
3939 | ||
3940 | static void | |
3941 | ppc_section (int type) | |
3942 | { | |
3943 | const char *name; | |
3944 | symbolS *sym; | |
3945 | ||
3946 | if (type == 't') | |
3947 | name = ".text[PR]"; | |
3948 | else if (type == 'd') | |
3949 | name = ".data[RW]"; | |
3950 | else | |
3951 | abort (); | |
3952 | ||
3953 | sym = symbol_find_or_make (name); | |
3954 | ||
3955 | ppc_change_csect (sym, 2); | |
3956 | ||
3957 | demand_empty_rest_of_line (); | |
3958 | } | |
3959 | ||
3960 | /* This function handles the .section pseudo-op. This is mostly to | |
3961 | give an error, since XCOFF only supports .text, .data and .bss, but | |
3962 | we do permit the user to name the text or data section. */ | |
3963 | ||
3964 | static void | |
3965 | ppc_named_section (int ignore ATTRIBUTE_UNUSED) | |
3966 | { | |
3967 | char *user_name; | |
3968 | const char *real_name; | |
3969 | char c; | |
3970 | symbolS *sym; | |
3971 | ||
3972 | user_name = input_line_pointer; | |
3973 | c = get_symbol_end (); | |
3974 | ||
3975 | if (strcmp (user_name, ".text") == 0) | |
3976 | real_name = ".text[PR]"; | |
3977 | else if (strcmp (user_name, ".data") == 0) | |
3978 | real_name = ".data[RW]"; | |
3979 | else | |
3980 | { | |
3981 | as_bad (_("the XCOFF file format does not support arbitrary sections")); | |
3982 | *input_line_pointer = c; | |
3983 | ignore_rest_of_line (); | |
3984 | return; | |
3985 | } | |
3986 | ||
3987 | *input_line_pointer = c; | |
3988 | ||
3989 | sym = symbol_find_or_make (real_name); | |
3990 | ||
3991 | ppc_change_csect (sym, 2); | |
3992 | ||
3993 | demand_empty_rest_of_line (); | |
3994 | } | |
3995 | ||
3996 | /* The .extern pseudo-op. We create an undefined symbol. */ | |
3997 | ||
3998 | static void | |
3999 | ppc_extern (int ignore ATTRIBUTE_UNUSED) | |
4000 | { | |
4001 | char *name; | |
4002 | char endc; | |
4003 | ||
4004 | name = input_line_pointer; | |
4005 | endc = get_symbol_end (); | |
4006 | ||
4007 | (void) symbol_find_or_make (name); | |
4008 | ||
4009 | *input_line_pointer = endc; | |
4010 | ||
4011 | demand_empty_rest_of_line (); | |
4012 | } | |
4013 | ||
4014 | /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */ | |
4015 | ||
4016 | static void | |
4017 | ppc_lglobl (int ignore ATTRIBUTE_UNUSED) | |
4018 | { | |
4019 | char *name; | |
4020 | char endc; | |
4021 | symbolS *sym; | |
4022 | ||
4023 | name = input_line_pointer; | |
4024 | endc = get_symbol_end (); | |
4025 | ||
4026 | sym = symbol_find_or_make (name); | |
4027 | ||
4028 | *input_line_pointer = endc; | |
4029 | ||
4030 | symbol_get_tc (sym)->output = 1; | |
4031 | ||
4032 | demand_empty_rest_of_line (); | |
4033 | } | |
4034 | ||
4035 | /* The .ref pseudo-op. It takes a list of symbol names and inserts R_REF | |
4036 | relocations at the beginning of the current csect. | |
4037 | ||
4038 | (In principle, there's no reason why the relocations _have_ to be at | |
4039 | the beginning. Anywhere in the csect would do. However, inserting | |
4040 | at the beginning is what the native assmebler does, and it helps to | |
4041 | deal with cases where the .ref statements follow the section contents.) | |
4042 | ||
4043 | ??? .refs don't work for empty .csects. However, the native assembler | |
4044 | doesn't report an error in this case, and neither yet do we. */ | |
4045 | ||
4046 | static void | |
4047 | ppc_ref (int ignore ATTRIBUTE_UNUSED) | |
4048 | { | |
4049 | char *name; | |
4050 | char c; | |
4051 | ||
4052 | if (ppc_current_csect == NULL) | |
4053 | { | |
4054 | as_bad (_(".ref outside .csect")); | |
4055 | ignore_rest_of_line (); | |
4056 | return; | |
4057 | } | |
4058 | ||
4059 | do | |
4060 | { | |
4061 | name = input_line_pointer; | |
4062 | c = get_symbol_end (); | |
4063 | ||
4064 | fix_at_start (symbol_get_frag (ppc_current_csect), 0, | |
4065 | symbol_find_or_make (name), 0, FALSE, BFD_RELOC_NONE); | |
4066 | ||
4067 | *input_line_pointer = c; | |
4068 | SKIP_WHITESPACE (); | |
4069 | c = *input_line_pointer; | |
4070 | if (c == ',') | |
4071 | { | |
4072 | input_line_pointer++; | |
4073 | SKIP_WHITESPACE (); | |
4074 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
4075 | { | |
4076 | as_bad (_("missing symbol name")); | |
4077 | ignore_rest_of_line (); | |
4078 | return; | |
4079 | } | |
4080 | } | |
4081 | } | |
4082 | while (c == ','); | |
4083 | ||
4084 | demand_empty_rest_of_line (); | |
4085 | } | |
4086 | ||
4087 | /* The .rename pseudo-op. The RS/6000 assembler can rename symbols, | |
4088 | although I don't know why it bothers. */ | |
4089 | ||
4090 | static void | |
4091 | ppc_rename (int ignore ATTRIBUTE_UNUSED) | |
4092 | { | |
4093 | char *name; | |
4094 | char endc; | |
4095 | symbolS *sym; | |
4096 | int len; | |
4097 | ||
4098 | name = input_line_pointer; | |
4099 | endc = get_symbol_end (); | |
4100 | ||
4101 | sym = symbol_find_or_make (name); | |
4102 | ||
4103 | *input_line_pointer = endc; | |
4104 | ||
4105 | if (*input_line_pointer != ',') | |
4106 | { | |
4107 | as_bad (_("missing rename string")); | |
4108 | ignore_rest_of_line (); | |
4109 | return; | |
4110 | } | |
4111 | ++input_line_pointer; | |
4112 | ||
4113 | symbol_get_tc (sym)->real_name = demand_copy_C_string (&len); | |
4114 | ||
4115 | demand_empty_rest_of_line (); | |
4116 | } | |
4117 | ||
4118 | /* The .stabx pseudo-op. This is similar to a normal .stabs | |
4119 | pseudo-op, but slightly different. A sample is | |
4120 | .stabx "main:F-1",.main,142,0 | |
4121 | The first argument is the symbol name to create. The second is the | |
4122 | value, and the third is the storage class. The fourth seems to be | |
4123 | always zero, and I am assuming it is the type. */ | |
4124 | ||
4125 | static void | |
4126 | ppc_stabx (int ignore ATTRIBUTE_UNUSED) | |
4127 | { | |
4128 | char *name; | |
4129 | int len; | |
4130 | symbolS *sym; | |
4131 | expressionS exp; | |
4132 | ||
4133 | name = demand_copy_C_string (&len); | |
4134 | ||
4135 | if (*input_line_pointer != ',') | |
4136 | { | |
4137 | as_bad (_("missing value")); | |
4138 | return; | |
4139 | } | |
4140 | ++input_line_pointer; | |
4141 | ||
4142 | ppc_stab_symbol = TRUE; | |
4143 | sym = symbol_make (name); | |
4144 | ppc_stab_symbol = FALSE; | |
4145 | ||
4146 | symbol_get_tc (sym)->real_name = name; | |
4147 | ||
4148 | (void) expression (&exp); | |
4149 | ||
4150 | switch (exp.X_op) | |
4151 | { | |
4152 | case O_illegal: | |
4153 | case O_absent: | |
4154 | case O_big: | |
4155 | as_bad (_("illegal .stabx expression; zero assumed")); | |
4156 | exp.X_add_number = 0; | |
4157 | /* Fall through. */ | |
4158 | case O_constant: | |
4159 | S_SET_VALUE (sym, (valueT) exp.X_add_number); | |
4160 | symbol_set_frag (sym, &zero_address_frag); | |
4161 | break; | |
4162 | ||
4163 | case O_symbol: | |
4164 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section) | |
4165 | symbol_set_value_expression (sym, &exp); | |
4166 | else | |
4167 | { | |
4168 | S_SET_VALUE (sym, | |
4169 | exp.X_add_number + S_GET_VALUE (exp.X_add_symbol)); | |
4170 | symbol_set_frag (sym, symbol_get_frag (exp.X_add_symbol)); | |
4171 | } | |
4172 | break; | |
4173 | ||
4174 | default: | |
4175 | /* The value is some complex expression. This will probably | |
4176 | fail at some later point, but this is probably the right | |
4177 | thing to do here. */ | |
4178 | symbol_set_value_expression (sym, &exp); | |
4179 | break; | |
4180 | } | |
4181 | ||
4182 | S_SET_SEGMENT (sym, ppc_coff_debug_section); | |
4183 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; | |
4184 | ||
4185 | if (*input_line_pointer != ',') | |
4186 | { | |
4187 | as_bad (_("missing class")); | |
4188 | return; | |
4189 | } | |
4190 | ++input_line_pointer; | |
4191 | ||
4192 | S_SET_STORAGE_CLASS (sym, get_absolute_expression ()); | |
4193 | ||
4194 | if (*input_line_pointer != ',') | |
4195 | { | |
4196 | as_bad (_("missing type")); | |
4197 | return; | |
4198 | } | |
4199 | ++input_line_pointer; | |
4200 | ||
4201 | S_SET_DATA_TYPE (sym, get_absolute_expression ()); | |
4202 | ||
4203 | symbol_get_tc (sym)->output = 1; | |
4204 | ||
4205 | if (S_GET_STORAGE_CLASS (sym) == C_STSYM) | |
4206 | { | |
4207 | /* In this case : | |
4208 | ||
4209 | .bs name | |
4210 | .stabx "z",arrays_,133,0 | |
4211 | .es | |
4212 | ||
4213 | .comm arrays_,13768,3 | |
4214 | ||
4215 | resolve_symbol_value will copy the exp's "within" into sym's when the | |
4216 | offset is 0. Since this seems to be corner case problem, | |
4217 | only do the correction for storage class C_STSYM. A better solution | |
4218 | would be to have the tc field updated in ppc_symbol_new_hook. */ | |
4219 | ||
4220 | if (exp.X_op == O_symbol) | |
4221 | { | |
4222 | if (ppc_current_block == NULL) | |
4223 | as_bad (_(".stabx of storage class stsym must be within .bs/.es")); | |
4224 | ||
4225 | symbol_get_tc (sym)->within = ppc_current_block; | |
4226 | symbol_get_tc (exp.X_add_symbol)->within = ppc_current_block; | |
4227 | } | |
4228 | } | |
4229 | ||
4230 | if (exp.X_op != O_symbol | |
4231 | || ! S_IS_EXTERNAL (exp.X_add_symbol) | |
4232 | || S_GET_SEGMENT (exp.X_add_symbol) != bss_section) | |
4233 | ppc_frob_label (sym); | |
4234 | else | |
4235 | { | |
4236 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
4237 | symbol_append (sym, exp.X_add_symbol, &symbol_rootP, &symbol_lastP); | |
4238 | if (symbol_get_tc (ppc_current_csect)->within == exp.X_add_symbol) | |
4239 | symbol_get_tc (ppc_current_csect)->within = sym; | |
4240 | } | |
4241 | ||
4242 | demand_empty_rest_of_line (); | |
4243 | } | |
4244 | ||
4245 | /* The .function pseudo-op. This takes several arguments. The first | |
4246 | argument seems to be the external name of the symbol. The second | |
4247 | argument seems to be the label for the start of the function. gcc | |
4248 | uses the same name for both. I have no idea what the third and | |
4249 | fourth arguments are meant to be. The optional fifth argument is | |
4250 | an expression for the size of the function. In COFF this symbol | |
4251 | gets an aux entry like that used for a csect. */ | |
4252 | ||
4253 | static void | |
4254 | ppc_function (int ignore ATTRIBUTE_UNUSED) | |
4255 | { | |
4256 | char *name; | |
4257 | char endc; | |
4258 | char *s; | |
4259 | symbolS *ext_sym; | |
4260 | symbolS *lab_sym; | |
4261 | ||
4262 | name = input_line_pointer; | |
4263 | endc = get_symbol_end (); | |
4264 | ||
4265 | /* Ignore any [PR] suffix. */ | |
4266 | name = ppc_canonicalize_symbol_name (name); | |
4267 | s = strchr (name, '['); | |
4268 | if (s != (char *) NULL | |
4269 | && strcmp (s + 1, "PR]") == 0) | |
4270 | *s = '\0'; | |
4271 | ||
4272 | ext_sym = symbol_find_or_make (name); | |
4273 | ||
4274 | *input_line_pointer = endc; | |
4275 | ||
4276 | if (*input_line_pointer != ',') | |
4277 | { | |
4278 | as_bad (_("missing symbol name")); | |
4279 | ignore_rest_of_line (); | |
4280 | return; | |
4281 | } | |
4282 | ++input_line_pointer; | |
4283 | ||
4284 | name = input_line_pointer; | |
4285 | endc = get_symbol_end (); | |
4286 | ||
4287 | lab_sym = symbol_find_or_make (name); | |
4288 | ||
4289 | *input_line_pointer = endc; | |
4290 | ||
4291 | if (ext_sym != lab_sym) | |
4292 | { | |
4293 | expressionS exp; | |
4294 | ||
4295 | exp.X_op = O_symbol; | |
4296 | exp.X_add_symbol = lab_sym; | |
4297 | exp.X_op_symbol = NULL; | |
4298 | exp.X_add_number = 0; | |
4299 | exp.X_unsigned = 0; | |
4300 | symbol_set_value_expression (ext_sym, &exp); | |
4301 | } | |
4302 | ||
4303 | if (symbol_get_tc (ext_sym)->symbol_class == -1) | |
4304 | symbol_get_tc (ext_sym)->symbol_class = XMC_PR; | |
4305 | symbol_get_tc (ext_sym)->output = 1; | |
4306 | ||
4307 | if (*input_line_pointer == ',') | |
4308 | { | |
4309 | expressionS exp; | |
4310 | ||
4311 | /* Ignore the third argument. */ | |
4312 | ++input_line_pointer; | |
4313 | expression (& exp); | |
4314 | if (*input_line_pointer == ',') | |
4315 | { | |
4316 | /* Ignore the fourth argument. */ | |
4317 | ++input_line_pointer; | |
4318 | expression (& exp); | |
4319 | if (*input_line_pointer == ',') | |
4320 | { | |
4321 | /* The fifth argument is the function size. */ | |
4322 | ++input_line_pointer; | |
4323 | symbol_get_tc (ext_sym)->u.size = symbol_new | |
4324 | ("L0\001", absolute_section,(valueT) 0, &zero_address_frag); | |
4325 | pseudo_set (symbol_get_tc (ext_sym)->u.size); | |
4326 | } | |
4327 | } | |
4328 | } | |
4329 | ||
4330 | S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT); | |
4331 | SF_SET_FUNCTION (ext_sym); | |
4332 | SF_SET_PROCESS (ext_sym); | |
4333 | coff_add_linesym (ext_sym); | |
4334 | ||
4335 | demand_empty_rest_of_line (); | |
4336 | } | |
4337 | ||
4338 | /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named | |
4339 | ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym | |
4340 | with the correct line number */ | |
4341 | ||
4342 | static symbolS *saved_bi_sym = 0; | |
4343 | ||
4344 | static void | |
4345 | ppc_bf (int ignore ATTRIBUTE_UNUSED) | |
4346 | { | |
4347 | symbolS *sym; | |
4348 | ||
4349 | sym = symbol_make (".bf"); | |
4350 | S_SET_SEGMENT (sym, text_section); | |
4351 | symbol_set_frag (sym, frag_now); | |
4352 | S_SET_VALUE (sym, frag_now_fix ()); | |
4353 | S_SET_STORAGE_CLASS (sym, C_FCN); | |
4354 | ||
4355 | coff_line_base = get_absolute_expression (); | |
4356 | ||
4357 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
4358 | SA_SET_SYM_LNNO (sym, coff_line_base); | |
4359 | ||
4360 | /* Line number for bi. */ | |
4361 | if (saved_bi_sym) | |
4362 | { | |
4363 | S_SET_VALUE (saved_bi_sym, coff_n_line_nos); | |
4364 | saved_bi_sym = 0; | |
4365 | } | |
4366 | ||
4367 | ||
4368 | symbol_get_tc (sym)->output = 1; | |
4369 | ||
4370 | ppc_frob_label (sym); | |
4371 | ||
4372 | demand_empty_rest_of_line (); | |
4373 | } | |
4374 | ||
4375 | /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named | |
4376 | ".ef", except that the line number is absolute, not relative to the | |
4377 | most recent ".bf" symbol. */ | |
4378 | ||
4379 | static void | |
4380 | ppc_ef (int ignore ATTRIBUTE_UNUSED) | |
4381 | { | |
4382 | symbolS *sym; | |
4383 | ||
4384 | sym = symbol_make (".ef"); | |
4385 | S_SET_SEGMENT (sym, text_section); | |
4386 | symbol_set_frag (sym, frag_now); | |
4387 | S_SET_VALUE (sym, frag_now_fix ()); | |
4388 | S_SET_STORAGE_CLASS (sym, C_FCN); | |
4389 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
4390 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); | |
4391 | symbol_get_tc (sym)->output = 1; | |
4392 | ||
4393 | ppc_frob_label (sym); | |
4394 | ||
4395 | demand_empty_rest_of_line (); | |
4396 | } | |
4397 | ||
4398 | /* The .bi and .ei pseudo-ops. These take a string argument and | |
4399 | generates a C_BINCL or C_EINCL symbol, which goes at the start of | |
4400 | the symbol list. The value of .bi will be know when the next .bf | |
4401 | is encountered. */ | |
4402 | ||
4403 | static void | |
4404 | ppc_biei (int ei) | |
4405 | { | |
4406 | static symbolS *last_biei; | |
4407 | ||
4408 | char *name; | |
4409 | int len; | |
4410 | symbolS *sym; | |
4411 | symbolS *look; | |
4412 | ||
4413 | name = demand_copy_C_string (&len); | |
4414 | ||
4415 | /* The value of these symbols is actually file offset. Here we set | |
4416 | the value to the index into the line number entries. In | |
4417 | ppc_frob_symbols we set the fix_line field, which will cause BFD | |
4418 | to do the right thing. */ | |
4419 | ||
4420 | sym = symbol_make (name); | |
4421 | /* obj-coff.c currently only handles line numbers correctly in the | |
4422 | .text section. */ | |
4423 | S_SET_SEGMENT (sym, text_section); | |
4424 | S_SET_VALUE (sym, coff_n_line_nos); | |
4425 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; | |
4426 | ||
4427 | S_SET_STORAGE_CLASS (sym, ei ? C_EINCL : C_BINCL); | |
4428 | symbol_get_tc (sym)->output = 1; | |
4429 | ||
4430 | /* Save bi. */ | |
4431 | if (ei) | |
4432 | saved_bi_sym = 0; | |
4433 | else | |
4434 | saved_bi_sym = sym; | |
4435 | ||
4436 | for (look = last_biei ? last_biei : symbol_rootP; | |
4437 | (look != (symbolS *) NULL | |
4438 | && (S_GET_STORAGE_CLASS (look) == C_FILE | |
4439 | || S_GET_STORAGE_CLASS (look) == C_BINCL | |
4440 | || S_GET_STORAGE_CLASS (look) == C_EINCL)); | |
4441 | look = symbol_next (look)) | |
4442 | ; | |
4443 | if (look != (symbolS *) NULL) | |
4444 | { | |
4445 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
4446 | symbol_insert (sym, look, &symbol_rootP, &symbol_lastP); | |
4447 | last_biei = sym; | |
4448 | } | |
4449 | ||
4450 | demand_empty_rest_of_line (); | |
4451 | } | |
4452 | ||
4453 | /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs". | |
4454 | There is one argument, which is a csect symbol. The value of the | |
4455 | .bs symbol is the index of this csect symbol. */ | |
4456 | ||
4457 | static void | |
4458 | ppc_bs (int ignore ATTRIBUTE_UNUSED) | |
4459 | { | |
4460 | char *name; | |
4461 | char endc; | |
4462 | symbolS *csect; | |
4463 | symbolS *sym; | |
4464 | ||
4465 | if (ppc_current_block != NULL) | |
4466 | as_bad (_("nested .bs blocks")); | |
4467 | ||
4468 | name = input_line_pointer; | |
4469 | endc = get_symbol_end (); | |
4470 | ||
4471 | csect = symbol_find_or_make (name); | |
4472 | ||
4473 | *input_line_pointer = endc; | |
4474 | ||
4475 | sym = symbol_make (".bs"); | |
4476 | S_SET_SEGMENT (sym, now_seg); | |
4477 | S_SET_STORAGE_CLASS (sym, C_BSTAT); | |
4478 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; | |
4479 | symbol_get_tc (sym)->output = 1; | |
4480 | ||
4481 | symbol_get_tc (sym)->within = csect; | |
4482 | ||
4483 | ppc_frob_label (sym); | |
4484 | ||
4485 | ppc_current_block = sym; | |
4486 | ||
4487 | demand_empty_rest_of_line (); | |
4488 | } | |
4489 | ||
4490 | /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */ | |
4491 | ||
4492 | static void | |
4493 | ppc_es (int ignore ATTRIBUTE_UNUSED) | |
4494 | { | |
4495 | symbolS *sym; | |
4496 | ||
4497 | if (ppc_current_block == NULL) | |
4498 | as_bad (_(".es without preceding .bs")); | |
4499 | ||
4500 | sym = symbol_make (".es"); | |
4501 | S_SET_SEGMENT (sym, now_seg); | |
4502 | S_SET_STORAGE_CLASS (sym, C_ESTAT); | |
4503 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; | |
4504 | symbol_get_tc (sym)->output = 1; | |
4505 | ||
4506 | ppc_frob_label (sym); | |
4507 | ||
4508 | ppc_current_block = NULL; | |
4509 | ||
4510 | demand_empty_rest_of_line (); | |
4511 | } | |
4512 | ||
4513 | /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a | |
4514 | line number. */ | |
4515 | ||
4516 | static void | |
4517 | ppc_bb (int ignore ATTRIBUTE_UNUSED) | |
4518 | { | |
4519 | symbolS *sym; | |
4520 | ||
4521 | sym = symbol_make (".bb"); | |
4522 | S_SET_SEGMENT (sym, text_section); | |
4523 | symbol_set_frag (sym, frag_now); | |
4524 | S_SET_VALUE (sym, frag_now_fix ()); | |
4525 | S_SET_STORAGE_CLASS (sym, C_BLOCK); | |
4526 | ||
4527 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
4528 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); | |
4529 | ||
4530 | symbol_get_tc (sym)->output = 1; | |
4531 | ||
4532 | SF_SET_PROCESS (sym); | |
4533 | ||
4534 | ppc_frob_label (sym); | |
4535 | ||
4536 | demand_empty_rest_of_line (); | |
4537 | } | |
4538 | ||
4539 | /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a | |
4540 | line number. */ | |
4541 | ||
4542 | static void | |
4543 | ppc_eb (int ignore ATTRIBUTE_UNUSED) | |
4544 | { | |
4545 | symbolS *sym; | |
4546 | ||
4547 | sym = symbol_make (".eb"); | |
4548 | S_SET_SEGMENT (sym, text_section); | |
4549 | symbol_set_frag (sym, frag_now); | |
4550 | S_SET_VALUE (sym, frag_now_fix ()); | |
4551 | S_SET_STORAGE_CLASS (sym, C_BLOCK); | |
4552 | S_SET_NUMBER_AUXILIARY (sym, 1); | |
4553 | SA_SET_SYM_LNNO (sym, get_absolute_expression ()); | |
4554 | symbol_get_tc (sym)->output = 1; | |
4555 | ||
4556 | SF_SET_PROCESS (sym); | |
4557 | ||
4558 | ppc_frob_label (sym); | |
4559 | ||
4560 | demand_empty_rest_of_line (); | |
4561 | } | |
4562 | ||
4563 | /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a | |
4564 | specified name. */ | |
4565 | ||
4566 | static void | |
4567 | ppc_bc (int ignore ATTRIBUTE_UNUSED) | |
4568 | { | |
4569 | char *name; | |
4570 | int len; | |
4571 | symbolS *sym; | |
4572 | ||
4573 | name = demand_copy_C_string (&len); | |
4574 | sym = symbol_make (name); | |
4575 | S_SET_SEGMENT (sym, ppc_coff_debug_section); | |
4576 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; | |
4577 | S_SET_STORAGE_CLASS (sym, C_BCOMM); | |
4578 | S_SET_VALUE (sym, 0); | |
4579 | symbol_get_tc (sym)->output = 1; | |
4580 | ||
4581 | ppc_frob_label (sym); | |
4582 | ||
4583 | demand_empty_rest_of_line (); | |
4584 | } | |
4585 | ||
4586 | /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */ | |
4587 | ||
4588 | static void | |
4589 | ppc_ec (int ignore ATTRIBUTE_UNUSED) | |
4590 | { | |
4591 | symbolS *sym; | |
4592 | ||
4593 | sym = symbol_make (".ec"); | |
4594 | S_SET_SEGMENT (sym, ppc_coff_debug_section); | |
4595 | symbol_get_bfdsym (sym)->flags |= BSF_DEBUGGING; | |
4596 | S_SET_STORAGE_CLASS (sym, C_ECOMM); | |
4597 | S_SET_VALUE (sym, 0); | |
4598 | symbol_get_tc (sym)->output = 1; | |
4599 | ||
4600 | ppc_frob_label (sym); | |
4601 | ||
4602 | demand_empty_rest_of_line (); | |
4603 | } | |
4604 | ||
4605 | /* The .toc pseudo-op. Switch to the .toc subsegment. */ | |
4606 | ||
4607 | static void | |
4608 | ppc_toc (int ignore ATTRIBUTE_UNUSED) | |
4609 | { | |
4610 | if (ppc_toc_csect != (symbolS *) NULL) | |
4611 | subseg_set (data_section, symbol_get_tc (ppc_toc_csect)->subseg); | |
4612 | else | |
4613 | { | |
4614 | subsegT subseg; | |
4615 | symbolS *sym; | |
4616 | symbolS *list; | |
4617 | ||
4618 | subseg = ppc_data_subsegment; | |
4619 | ++ppc_data_subsegment; | |
4620 | ||
4621 | subseg_new (segment_name (data_section), subseg); | |
4622 | ppc_toc_frag = frag_now; | |
4623 | ||
4624 | sym = symbol_find_or_make ("TOC[TC0]"); | |
4625 | symbol_set_frag (sym, frag_now); | |
4626 | S_SET_SEGMENT (sym, data_section); | |
4627 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); | |
4628 | symbol_get_tc (sym)->subseg = subseg; | |
4629 | symbol_get_tc (sym)->output = 1; | |
4630 | symbol_get_tc (sym)->within = sym; | |
4631 | ||
4632 | ppc_toc_csect = sym; | |
4633 | ||
4634 | for (list = ppc_data_csects; | |
4635 | symbol_get_tc (list)->next != (symbolS *) NULL; | |
4636 | list = symbol_get_tc (list)->next) | |
4637 | ; | |
4638 | symbol_get_tc (list)->next = sym; | |
4639 | ||
4640 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
4641 | symbol_append (sym, symbol_get_tc (list)->within, &symbol_rootP, | |
4642 | &symbol_lastP); | |
4643 | } | |
4644 | ||
4645 | ppc_current_csect = ppc_toc_csect; | |
4646 | ||
4647 | demand_empty_rest_of_line (); | |
4648 | } | |
4649 | ||
4650 | /* The AIX assembler automatically aligns the operands of a .long or | |
4651 | .short pseudo-op, and we want to be compatible. */ | |
4652 | ||
4653 | static void | |
4654 | ppc_xcoff_cons (int log_size) | |
4655 | { | |
4656 | frag_align (log_size, 0, 0); | |
4657 | record_alignment (now_seg, log_size); | |
4658 | cons (1 << log_size); | |
4659 | } | |
4660 | ||
4661 | static void | |
4662 | ppc_vbyte (int dummy ATTRIBUTE_UNUSED) | |
4663 | { | |
4664 | expressionS exp; | |
4665 | int byte_count; | |
4666 | ||
4667 | (void) expression (&exp); | |
4668 | ||
4669 | if (exp.X_op != O_constant) | |
4670 | { | |
4671 | as_bad (_("non-constant byte count")); | |
4672 | return; | |
4673 | } | |
4674 | ||
4675 | byte_count = exp.X_add_number; | |
4676 | ||
4677 | if (*input_line_pointer != ',') | |
4678 | { | |
4679 | as_bad (_("missing value")); | |
4680 | return; | |
4681 | } | |
4682 | ||
4683 | ++input_line_pointer; | |
4684 | cons (byte_count); | |
4685 | } | |
4686 | ||
4687 | void | |
4688 | ppc_xcoff_end (void) | |
4689 | { | |
4690 | int i; | |
4691 | ||
4692 | for (i = 0; i < XCOFF_DWSECT_NBR_NAMES; i++) | |
4693 | { | |
4694 | struct dw_section *dws = &dw_sections[i]; | |
4695 | struct dw_subsection *dwss; | |
4696 | ||
4697 | if (dws->anon_subseg) | |
4698 | { | |
4699 | dwss = dws->anon_subseg; | |
4700 | dwss->link = dws->list_subseg; | |
4701 | } | |
4702 | else | |
4703 | dwss = dws->list_subseg; | |
4704 | ||
4705 | for (; dwss != NULL; dwss = dwss->link) | |
4706 | if (dwss->end_exp.X_add_symbol != NULL) | |
4707 | { | |
4708 | subseg_set (dws->sect, dwss->subseg); | |
4709 | symbol_set_value_now (dwss->end_exp.X_add_symbol); | |
4710 | } | |
4711 | } | |
4712 | } | |
4713 | ||
4714 | #endif /* OBJ_XCOFF */ | |
4715 | #if defined (OBJ_XCOFF) || defined (OBJ_ELF) | |
4716 | \f | |
4717 | /* The .tc pseudo-op. This is used when generating either XCOFF or | |
4718 | ELF. This takes two or more arguments. | |
4719 | ||
4720 | When generating XCOFF output, the first argument is the name to | |
4721 | give to this location in the toc; this will be a symbol with class | |
4722 | TC. The rest of the arguments are N-byte values to actually put at | |
4723 | this location in the TOC; often there is just one more argument, a | |
4724 | relocatable symbol reference. The size of the value to store | |
4725 | depends on target word size. A 32-bit target uses 4-byte values, a | |
4726 | 64-bit target uses 8-byte values. | |
4727 | ||
4728 | When not generating XCOFF output, the arguments are the same, but | |
4729 | the first argument is simply ignored. */ | |
4730 | ||
4731 | static void | |
4732 | ppc_tc (int ignore ATTRIBUTE_UNUSED) | |
4733 | { | |
4734 | #ifdef OBJ_XCOFF | |
4735 | ||
4736 | /* Define the TOC symbol name. */ | |
4737 | { | |
4738 | char *name; | |
4739 | char endc; | |
4740 | symbolS *sym; | |
4741 | ||
4742 | if (ppc_toc_csect == (symbolS *) NULL | |
4743 | || ppc_toc_csect != ppc_current_csect) | |
4744 | { | |
4745 | as_bad (_(".tc not in .toc section")); | |
4746 | ignore_rest_of_line (); | |
4747 | return; | |
4748 | } | |
4749 | ||
4750 | name = input_line_pointer; | |
4751 | endc = get_symbol_end (); | |
4752 | ||
4753 | sym = symbol_find_or_make (name); | |
4754 | ||
4755 | *input_line_pointer = endc; | |
4756 | ||
4757 | if (S_IS_DEFINED (sym)) | |
4758 | { | |
4759 | symbolS *label; | |
4760 | ||
4761 | label = symbol_get_tc (ppc_current_csect)->within; | |
4762 | if (symbol_get_tc (label)->symbol_class != XMC_TC0) | |
4763 | { | |
4764 | as_bad (_(".tc with no label")); | |
4765 | ignore_rest_of_line (); | |
4766 | return; | |
4767 | } | |
4768 | ||
4769 | S_SET_SEGMENT (label, S_GET_SEGMENT (sym)); | |
4770 | symbol_set_frag (label, symbol_get_frag (sym)); | |
4771 | S_SET_VALUE (label, S_GET_VALUE (sym)); | |
4772 | ||
4773 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
4774 | ++input_line_pointer; | |
4775 | ||
4776 | return; | |
4777 | } | |
4778 | ||
4779 | S_SET_SEGMENT (sym, now_seg); | |
4780 | symbol_set_frag (sym, frag_now); | |
4781 | S_SET_VALUE (sym, (valueT) frag_now_fix ()); | |
4782 | symbol_get_tc (sym)->symbol_class = XMC_TC; | |
4783 | symbol_get_tc (sym)->output = 1; | |
4784 | ||
4785 | ppc_frob_label (sym); | |
4786 | } | |
4787 | ||
4788 | #endif /* OBJ_XCOFF */ | |
4789 | #ifdef OBJ_ELF | |
4790 | int align; | |
4791 | ||
4792 | /* Skip the TOC symbol name. */ | |
4793 | while (is_part_of_name (*input_line_pointer) | |
4794 | || *input_line_pointer == ' ' | |
4795 | || *input_line_pointer == '[' | |
4796 | || *input_line_pointer == ']' | |
4797 | || *input_line_pointer == '{' | |
4798 | || *input_line_pointer == '}') | |
4799 | ++input_line_pointer; | |
4800 | ||
4801 | /* Align to a four/eight byte boundary. */ | |
4802 | align = ppc_obj64 ? 3 : 2; | |
4803 | frag_align (align, 0, 0); | |
4804 | record_alignment (now_seg, align); | |
4805 | #endif /* OBJ_ELF */ | |
4806 | ||
4807 | if (*input_line_pointer != ',') | |
4808 | demand_empty_rest_of_line (); | |
4809 | else | |
4810 | { | |
4811 | ++input_line_pointer; | |
4812 | cons (ppc_obj64 ? 8 : 4); | |
4813 | } | |
4814 | } | |
4815 | ||
4816 | /* Pseudo-op .machine. */ | |
4817 | ||
4818 | static void | |
4819 | ppc_machine (int ignore ATTRIBUTE_UNUSED) | |
4820 | { | |
4821 | char *cpu_string; | |
4822 | #define MAX_HISTORY 100 | |
4823 | static ppc_cpu_t *cpu_history; | |
4824 | static int curr_hist; | |
4825 | ||
4826 | SKIP_WHITESPACE (); | |
4827 | ||
4828 | if (*input_line_pointer == '"') | |
4829 | { | |
4830 | int len; | |
4831 | cpu_string = demand_copy_C_string (&len); | |
4832 | } | |
4833 | else | |
4834 | { | |
4835 | char c; | |
4836 | cpu_string = input_line_pointer; | |
4837 | c = get_symbol_end (); | |
4838 | cpu_string = xstrdup (cpu_string); | |
4839 | *input_line_pointer = c; | |
4840 | } | |
4841 | ||
4842 | if (cpu_string != NULL) | |
4843 | { | |
4844 | ppc_cpu_t old_cpu = ppc_cpu; | |
4845 | ppc_cpu_t new_cpu; | |
4846 | char *p; | |
4847 | ||
4848 | for (p = cpu_string; *p != 0; p++) | |
4849 | *p = TOLOWER (*p); | |
4850 | ||
4851 | if (strcmp (cpu_string, "push") == 0) | |
4852 | { | |
4853 | if (cpu_history == NULL) | |
4854 | cpu_history = xmalloc (MAX_HISTORY * sizeof (*cpu_history)); | |
4855 | ||
4856 | if (curr_hist >= MAX_HISTORY) | |
4857 | as_bad (_(".machine stack overflow")); | |
4858 | else | |
4859 | cpu_history[curr_hist++] = ppc_cpu; | |
4860 | } | |
4861 | else if (strcmp (cpu_string, "pop") == 0) | |
4862 | { | |
4863 | if (curr_hist <= 0) | |
4864 | as_bad (_(".machine stack underflow")); | |
4865 | else | |
4866 | ppc_cpu = cpu_history[--curr_hist]; | |
4867 | } | |
4868 | else if ((new_cpu = ppc_parse_cpu (ppc_cpu, &sticky, cpu_string)) != 0) | |
4869 | ppc_cpu = new_cpu; | |
4870 | else | |
4871 | as_bad (_("invalid machine `%s'"), cpu_string); | |
4872 | ||
4873 | if (ppc_cpu != old_cpu) | |
4874 | ppc_setup_opcodes (); | |
4875 | } | |
4876 | ||
4877 | demand_empty_rest_of_line (); | |
4878 | } | |
4879 | #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */ | |
4880 | \f | |
4881 | #ifdef TE_PE | |
4882 | ||
4883 | /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */ | |
4884 | ||
4885 | /* Set the current section. */ | |
4886 | static void | |
4887 | ppc_set_current_section (segT new) | |
4888 | { | |
4889 | ppc_previous_section = ppc_current_section; | |
4890 | ppc_current_section = new; | |
4891 | } | |
4892 | ||
4893 | /* pseudo-op: .previous | |
4894 | behaviour: toggles the current section with the previous section. | |
4895 | errors: None | |
4896 | warnings: "No previous section" */ | |
4897 | ||
4898 | static void | |
4899 | ppc_previous (int ignore ATTRIBUTE_UNUSED) | |
4900 | { | |
4901 | if (ppc_previous_section == NULL) | |
4902 | { | |
4903 | as_warn (_("no previous section to return to, ignored.")); | |
4904 | return; | |
4905 | } | |
4906 | ||
4907 | subseg_set (ppc_previous_section, 0); | |
4908 | ||
4909 | ppc_set_current_section (ppc_previous_section); | |
4910 | } | |
4911 | ||
4912 | /* pseudo-op: .pdata | |
4913 | behaviour: predefined read only data section | |
4914 | double word aligned | |
4915 | errors: None | |
4916 | warnings: None | |
4917 | initial: .section .pdata "adr3" | |
4918 | a - don't know -- maybe a misprint | |
4919 | d - initialized data | |
4920 | r - readable | |
4921 | 3 - double word aligned (that would be 4 byte boundary) | |
4922 | ||
4923 | commentary: | |
4924 | Tag index tables (also known as the function table) for exception | |
4925 | handling, debugging, etc. */ | |
4926 | ||
4927 | static void | |
4928 | ppc_pdata (int ignore ATTRIBUTE_UNUSED) | |
4929 | { | |
4930 | if (pdata_section == 0) | |
4931 | { | |
4932 | pdata_section = subseg_new (".pdata", 0); | |
4933 | ||
4934 | bfd_set_section_flags (stdoutput, pdata_section, | |
4935 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
4936 | | SEC_READONLY | SEC_DATA )); | |
4937 | ||
4938 | bfd_set_section_alignment (stdoutput, pdata_section, 2); | |
4939 | } | |
4940 | else | |
4941 | { | |
4942 | pdata_section = subseg_new (".pdata", 0); | |
4943 | } | |
4944 | ppc_set_current_section (pdata_section); | |
4945 | } | |
4946 | ||
4947 | /* pseudo-op: .ydata | |
4948 | behaviour: predefined read only data section | |
4949 | double word aligned | |
4950 | errors: None | |
4951 | warnings: None | |
4952 | initial: .section .ydata "drw3" | |
4953 | a - don't know -- maybe a misprint | |
4954 | d - initialized data | |
4955 | r - readable | |
4956 | 3 - double word aligned (that would be 4 byte boundary) | |
4957 | commentary: | |
4958 | Tag tables (also known as the scope table) for exception handling, | |
4959 | debugging, etc. */ | |
4960 | ||
4961 | static void | |
4962 | ppc_ydata (int ignore ATTRIBUTE_UNUSED) | |
4963 | { | |
4964 | if (ydata_section == 0) | |
4965 | { | |
4966 | ydata_section = subseg_new (".ydata", 0); | |
4967 | bfd_set_section_flags (stdoutput, ydata_section, | |
4968 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
4969 | | SEC_READONLY | SEC_DATA )); | |
4970 | ||
4971 | bfd_set_section_alignment (stdoutput, ydata_section, 3); | |
4972 | } | |
4973 | else | |
4974 | { | |
4975 | ydata_section = subseg_new (".ydata", 0); | |
4976 | } | |
4977 | ppc_set_current_section (ydata_section); | |
4978 | } | |
4979 | ||
4980 | /* pseudo-op: .reldata | |
4981 | behaviour: predefined read write data section | |
4982 | double word aligned (4-byte) | |
4983 | FIXME: relocation is applied to it | |
4984 | FIXME: what's the difference between this and .data? | |
4985 | errors: None | |
4986 | warnings: None | |
4987 | initial: .section .reldata "drw3" | |
4988 | d - initialized data | |
4989 | r - readable | |
4990 | w - writeable | |
4991 | 3 - double word aligned (that would be 8 byte boundary) | |
4992 | ||
4993 | commentary: | |
4994 | Like .data, but intended to hold data subject to relocation, such as | |
4995 | function descriptors, etc. */ | |
4996 | ||
4997 | static void | |
4998 | ppc_reldata (int ignore ATTRIBUTE_UNUSED) | |
4999 | { | |
5000 | if (reldata_section == 0) | |
5001 | { | |
5002 | reldata_section = subseg_new (".reldata", 0); | |
5003 | ||
5004 | bfd_set_section_flags (stdoutput, reldata_section, | |
5005 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
5006 | | SEC_DATA)); | |
5007 | ||
5008 | bfd_set_section_alignment (stdoutput, reldata_section, 2); | |
5009 | } | |
5010 | else | |
5011 | { | |
5012 | reldata_section = subseg_new (".reldata", 0); | |
5013 | } | |
5014 | ppc_set_current_section (reldata_section); | |
5015 | } | |
5016 | ||
5017 | /* pseudo-op: .rdata | |
5018 | behaviour: predefined read only data section | |
5019 | double word aligned | |
5020 | errors: None | |
5021 | warnings: None | |
5022 | initial: .section .rdata "dr3" | |
5023 | d - initialized data | |
5024 | r - readable | |
5025 | 3 - double word aligned (that would be 4 byte boundary) */ | |
5026 | ||
5027 | static void | |
5028 | ppc_rdata (int ignore ATTRIBUTE_UNUSED) | |
5029 | { | |
5030 | if (rdata_section == 0) | |
5031 | { | |
5032 | rdata_section = subseg_new (".rdata", 0); | |
5033 | bfd_set_section_flags (stdoutput, rdata_section, | |
5034 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
5035 | | SEC_READONLY | SEC_DATA )); | |
5036 | ||
5037 | bfd_set_section_alignment (stdoutput, rdata_section, 2); | |
5038 | } | |
5039 | else | |
5040 | { | |
5041 | rdata_section = subseg_new (".rdata", 0); | |
5042 | } | |
5043 | ppc_set_current_section (rdata_section); | |
5044 | } | |
5045 | ||
5046 | /* pseudo-op: .ualong | |
5047 | behaviour: much like .int, with the exception that no alignment is | |
5048 | performed. | |
5049 | FIXME: test the alignment statement | |
5050 | errors: None | |
5051 | warnings: None */ | |
5052 | ||
5053 | static void | |
5054 | ppc_ualong (int ignore ATTRIBUTE_UNUSED) | |
5055 | { | |
5056 | /* Try for long. */ | |
5057 | cons (4); | |
5058 | } | |
5059 | ||
5060 | /* pseudo-op: .znop <symbol name> | |
5061 | behaviour: Issue a nop instruction | |
5062 | Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using | |
5063 | the supplied symbol name. | |
5064 | errors: None | |
5065 | warnings: Missing symbol name */ | |
5066 | ||
5067 | static void | |
5068 | ppc_znop (int ignore ATTRIBUTE_UNUSED) | |
5069 | { | |
5070 | unsigned long insn; | |
5071 | const struct powerpc_opcode *opcode; | |
5072 | char *f; | |
5073 | symbolS *sym; | |
5074 | char *symbol_name; | |
5075 | char c; | |
5076 | char *name; | |
5077 | ||
5078 | /* Strip out the symbol name. */ | |
5079 | symbol_name = input_line_pointer; | |
5080 | c = get_symbol_end (); | |
5081 | ||
5082 | name = xmalloc (input_line_pointer - symbol_name + 1); | |
5083 | strcpy (name, symbol_name); | |
5084 | ||
5085 | sym = symbol_find_or_make (name); | |
5086 | ||
5087 | *input_line_pointer = c; | |
5088 | ||
5089 | SKIP_WHITESPACE (); | |
5090 | ||
5091 | /* Look up the opcode in the hash table. */ | |
5092 | opcode = (const struct powerpc_opcode *) hash_find (ppc_hash, "nop"); | |
5093 | ||
5094 | /* Stick in the nop. */ | |
5095 | insn = opcode->opcode; | |
5096 | ||
5097 | /* Write out the instruction. */ | |
5098 | f = frag_more (4); | |
5099 | md_number_to_chars (f, insn, 4); | |
5100 | fix_new (frag_now, | |
5101 | f - frag_now->fr_literal, | |
5102 | 4, | |
5103 | sym, | |
5104 | 0, | |
5105 | 0, | |
5106 | BFD_RELOC_16_GOT_PCREL); | |
5107 | ||
5108 | } | |
5109 | ||
5110 | /* pseudo-op: | |
5111 | behaviour: | |
5112 | errors: | |
5113 | warnings: */ | |
5114 | ||
5115 | static void | |
5116 | ppc_pe_comm (int lcomm) | |
5117 | { | |
5118 | char *name; | |
5119 | char c; | |
5120 | char *p; | |
5121 | offsetT temp; | |
5122 | symbolS *symbolP; | |
5123 | offsetT align; | |
5124 | ||
5125 | name = input_line_pointer; | |
5126 | c = get_symbol_end (); | |
5127 | ||
5128 | /* just after name is now '\0'. */ | |
5129 | p = input_line_pointer; | |
5130 | *p = c; | |
5131 | SKIP_WHITESPACE (); | |
5132 | if (*input_line_pointer != ',') | |
5133 | { | |
5134 | as_bad (_("expected comma after symbol-name: rest of line ignored.")); | |
5135 | ignore_rest_of_line (); | |
5136 | return; | |
5137 | } | |
5138 | ||
5139 | input_line_pointer++; /* skip ',' */ | |
5140 | if ((temp = get_absolute_expression ()) < 0) | |
5141 | { | |
5142 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp); | |
5143 | ignore_rest_of_line (); | |
5144 | return; | |
5145 | } | |
5146 | ||
5147 | if (! lcomm) | |
5148 | { | |
5149 | /* The third argument to .comm is the alignment. */ | |
5150 | if (*input_line_pointer != ',') | |
5151 | align = 3; | |
5152 | else | |
5153 | { | |
5154 | ++input_line_pointer; | |
5155 | align = get_absolute_expression (); | |
5156 | if (align <= 0) | |
5157 | { | |
5158 | as_warn (_("ignoring bad alignment")); | |
5159 | align = 3; | |
5160 | } | |
5161 | } | |
5162 | } | |
5163 | ||
5164 | *p = 0; | |
5165 | symbolP = symbol_find_or_make (name); | |
5166 | ||
5167 | *p = c; | |
5168 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) | |
5169 | { | |
5170 | as_bad (_("ignoring attempt to re-define symbol `%s'."), | |
5171 | S_GET_NAME (symbolP)); | |
5172 | ignore_rest_of_line (); | |
5173 | return; | |
5174 | } | |
5175 | ||
5176 | if (S_GET_VALUE (symbolP)) | |
5177 | { | |
5178 | if (S_GET_VALUE (symbolP) != (valueT) temp) | |
5179 | as_bad (_("length of .comm \"%s\" is already %ld. Not changed to %ld."), | |
5180 | S_GET_NAME (symbolP), | |
5181 | (long) S_GET_VALUE (symbolP), | |
5182 | (long) temp); | |
5183 | } | |
5184 | else | |
5185 | { | |
5186 | S_SET_VALUE (symbolP, (valueT) temp); | |
5187 | S_SET_EXTERNAL (symbolP); | |
5188 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); | |
5189 | } | |
5190 | ||
5191 | demand_empty_rest_of_line (); | |
5192 | } | |
5193 | ||
5194 | /* | |
5195 | * implement the .section pseudo op: | |
5196 | * .section name {, "flags"} | |
5197 | * ^ ^ | |
5198 | * | +--- optional flags: 'b' for bss | |
5199 | * | 'i' for info | |
5200 | * +-- section name 'l' for lib | |
5201 | * 'n' for noload | |
5202 | * 'o' for over | |
5203 | * 'w' for data | |
5204 | * 'd' (apparently m88k for data) | |
5205 | * 'x' for text | |
5206 | * But if the argument is not a quoted string, treat it as a | |
5207 | * subsegment number. | |
5208 | * | |
5209 | * FIXME: this is a copy of the section processing from obj-coff.c, with | |
5210 | * additions/changes for the moto-pas assembler support. There are three | |
5211 | * categories: | |
5212 | * | |
5213 | * FIXME: I just noticed this. This doesn't work at all really. It it | |
5214 | * setting bits that bfd probably neither understands or uses. The | |
5215 | * correct approach (?) will have to incorporate extra fields attached | |
5216 | * to the section to hold the system specific stuff. (krk) | |
5217 | * | |
5218 | * Section Contents: | |
5219 | * 'a' - unknown - referred to in documentation, but no definition supplied | |
5220 | * 'c' - section has code | |
5221 | * 'd' - section has initialized data | |
5222 | * 'u' - section has uninitialized data | |
5223 | * 'i' - section contains directives (info) | |
5224 | * 'n' - section can be discarded | |
5225 | * 'R' - remove section at link time | |
5226 | * | |
5227 | * Section Protection: | |
5228 | * 'r' - section is readable | |
5229 | * 'w' - section is writeable | |
5230 | * 'x' - section is executable | |
5231 | * 's' - section is sharable | |
5232 | * | |
5233 | * Section Alignment: | |
5234 | * '0' - align to byte boundary | |
5235 | * '1' - align to halfword undary | |
5236 | * '2' - align to word boundary | |
5237 | * '3' - align to doubleword boundary | |
5238 | * '4' - align to quadword boundary | |
5239 | * '5' - align to 32 byte boundary | |
5240 | * '6' - align to 64 byte boundary | |
5241 | * | |
5242 | */ | |
5243 | ||
5244 | void | |
5245 | ppc_pe_section (int ignore ATTRIBUTE_UNUSED) | |
5246 | { | |
5247 | /* Strip out the section name. */ | |
5248 | char *section_name; | |
5249 | char c; | |
5250 | char *name; | |
5251 | unsigned int exp; | |
5252 | flagword flags; | |
5253 | segT sec; | |
5254 | int align; | |
5255 | ||
5256 | section_name = input_line_pointer; | |
5257 | c = get_symbol_end (); | |
5258 | ||
5259 | name = xmalloc (input_line_pointer - section_name + 1); | |
5260 | strcpy (name, section_name); | |
5261 | ||
5262 | *input_line_pointer = c; | |
5263 | ||
5264 | SKIP_WHITESPACE (); | |
5265 | ||
5266 | exp = 0; | |
5267 | flags = SEC_NO_FLAGS; | |
5268 | ||
5269 | if (strcmp (name, ".idata$2") == 0) | |
5270 | { | |
5271 | align = 0; | |
5272 | } | |
5273 | else if (strcmp (name, ".idata$3") == 0) | |
5274 | { | |
5275 | align = 0; | |
5276 | } | |
5277 | else if (strcmp (name, ".idata$4") == 0) | |
5278 | { | |
5279 | align = 2; | |
5280 | } | |
5281 | else if (strcmp (name, ".idata$5") == 0) | |
5282 | { | |
5283 | align = 2; | |
5284 | } | |
5285 | else if (strcmp (name, ".idata$6") == 0) | |
5286 | { | |
5287 | align = 1; | |
5288 | } | |
5289 | else | |
5290 | /* Default alignment to 16 byte boundary. */ | |
5291 | align = 4; | |
5292 | ||
5293 | if (*input_line_pointer == ',') | |
5294 | { | |
5295 | ++input_line_pointer; | |
5296 | SKIP_WHITESPACE (); | |
5297 | if (*input_line_pointer != '"') | |
5298 | exp = get_absolute_expression (); | |
5299 | else | |
5300 | { | |
5301 | ++input_line_pointer; | |
5302 | while (*input_line_pointer != '"' | |
5303 | && ! is_end_of_line[(unsigned char) *input_line_pointer]) | |
5304 | { | |
5305 | switch (*input_line_pointer) | |
5306 | { | |
5307 | /* Section Contents */ | |
5308 | case 'a': /* unknown */ | |
5309 | as_bad (_("unsupported section attribute -- 'a'")); | |
5310 | break; | |
5311 | case 'c': /* code section */ | |
5312 | flags |= SEC_CODE; | |
5313 | break; | |
5314 | case 'd': /* section has initialized data */ | |
5315 | flags |= SEC_DATA; | |
5316 | break; | |
5317 | case 'u': /* section has uninitialized data */ | |
5318 | /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA | |
5319 | in winnt.h */ | |
5320 | flags |= SEC_ROM; | |
5321 | break; | |
5322 | case 'i': /* section contains directives (info) */ | |
5323 | /* FIXME: This is IMAGE_SCN_LNK_INFO | |
5324 | in winnt.h */ | |
5325 | flags |= SEC_HAS_CONTENTS; | |
5326 | break; | |
5327 | case 'n': /* section can be discarded */ | |
5328 | flags &=~ SEC_LOAD; | |
5329 | break; | |
5330 | case 'R': /* Remove section at link time */ | |
5331 | flags |= SEC_NEVER_LOAD; | |
5332 | break; | |
5333 | #if IFLICT_BRAIN_DAMAGE | |
5334 | /* Section Protection */ | |
5335 | case 'r': /* section is readable */ | |
5336 | flags |= IMAGE_SCN_MEM_READ; | |
5337 | break; | |
5338 | case 'w': /* section is writeable */ | |
5339 | flags |= IMAGE_SCN_MEM_WRITE; | |
5340 | break; | |
5341 | case 'x': /* section is executable */ | |
5342 | flags |= IMAGE_SCN_MEM_EXECUTE; | |
5343 | break; | |
5344 | case 's': /* section is sharable */ | |
5345 | flags |= IMAGE_SCN_MEM_SHARED; | |
5346 | break; | |
5347 | ||
5348 | /* Section Alignment */ | |
5349 | case '0': /* align to byte boundary */ | |
5350 | flags |= IMAGE_SCN_ALIGN_1BYTES; | |
5351 | align = 0; | |
5352 | break; | |
5353 | case '1': /* align to halfword boundary */ | |
5354 | flags |= IMAGE_SCN_ALIGN_2BYTES; | |
5355 | align = 1; | |
5356 | break; | |
5357 | case '2': /* align to word boundary */ | |
5358 | flags |= IMAGE_SCN_ALIGN_4BYTES; | |
5359 | align = 2; | |
5360 | break; | |
5361 | case '3': /* align to doubleword boundary */ | |
5362 | flags |= IMAGE_SCN_ALIGN_8BYTES; | |
5363 | align = 3; | |
5364 | break; | |
5365 | case '4': /* align to quadword boundary */ | |
5366 | flags |= IMAGE_SCN_ALIGN_16BYTES; | |
5367 | align = 4; | |
5368 | break; | |
5369 | case '5': /* align to 32 byte boundary */ | |
5370 | flags |= IMAGE_SCN_ALIGN_32BYTES; | |
5371 | align = 5; | |
5372 | break; | |
5373 | case '6': /* align to 64 byte boundary */ | |
5374 | flags |= IMAGE_SCN_ALIGN_64BYTES; | |
5375 | align = 6; | |
5376 | break; | |
5377 | #endif | |
5378 | default: | |
5379 | as_bad (_("unknown section attribute '%c'"), | |
5380 | *input_line_pointer); | |
5381 | break; | |
5382 | } | |
5383 | ++input_line_pointer; | |
5384 | } | |
5385 | if (*input_line_pointer == '"') | |
5386 | ++input_line_pointer; | |
5387 | } | |
5388 | } | |
5389 | ||
5390 | sec = subseg_new (name, (subsegT) exp); | |
5391 | ||
5392 | ppc_set_current_section (sec); | |
5393 | ||
5394 | if (flags != SEC_NO_FLAGS) | |
5395 | { | |
5396 | if (! bfd_set_section_flags (stdoutput, sec, flags)) | |
5397 | as_bad (_("error setting flags for \"%s\": %s"), | |
5398 | bfd_section_name (stdoutput, sec), | |
5399 | bfd_errmsg (bfd_get_error ())); | |
5400 | } | |
5401 | ||
5402 | bfd_set_section_alignment (stdoutput, sec, align); | |
5403 | } | |
5404 | ||
5405 | static void | |
5406 | ppc_pe_function (int ignore ATTRIBUTE_UNUSED) | |
5407 | { | |
5408 | char *name; | |
5409 | char endc; | |
5410 | symbolS *ext_sym; | |
5411 | ||
5412 | name = input_line_pointer; | |
5413 | endc = get_symbol_end (); | |
5414 | ||
5415 | ext_sym = symbol_find_or_make (name); | |
5416 | ||
5417 | *input_line_pointer = endc; | |
5418 | ||
5419 | S_SET_DATA_TYPE (ext_sym, DT_FCN << N_BTSHFT); | |
5420 | SF_SET_FUNCTION (ext_sym); | |
5421 | SF_SET_PROCESS (ext_sym); | |
5422 | coff_add_linesym (ext_sym); | |
5423 | ||
5424 | demand_empty_rest_of_line (); | |
5425 | } | |
5426 | ||
5427 | static void | |
5428 | ppc_pe_tocd (int ignore ATTRIBUTE_UNUSED) | |
5429 | { | |
5430 | if (tocdata_section == 0) | |
5431 | { | |
5432 | tocdata_section = subseg_new (".tocd", 0); | |
5433 | /* FIXME: section flags won't work. */ | |
5434 | bfd_set_section_flags (stdoutput, tocdata_section, | |
5435 | (SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
5436 | | SEC_READONLY | SEC_DATA)); | |
5437 | ||
5438 | bfd_set_section_alignment (stdoutput, tocdata_section, 2); | |
5439 | } | |
5440 | else | |
5441 | { | |
5442 | rdata_section = subseg_new (".tocd", 0); | |
5443 | } | |
5444 | ||
5445 | ppc_set_current_section (tocdata_section); | |
5446 | ||
5447 | demand_empty_rest_of_line (); | |
5448 | } | |
5449 | ||
5450 | /* Don't adjust TOC relocs to use the section symbol. */ | |
5451 | ||
5452 | int | |
5453 | ppc_pe_fix_adjustable (fixS *fix) | |
5454 | { | |
5455 | return fix->fx_r_type != BFD_RELOC_PPC_TOC16; | |
5456 | } | |
5457 | ||
5458 | #endif | |
5459 | \f | |
5460 | #ifdef OBJ_XCOFF | |
5461 | ||
5462 | /* XCOFF specific symbol and file handling. */ | |
5463 | ||
5464 | /* Canonicalize the symbol name. We use the to force the suffix, if | |
5465 | any, to use square brackets, and to be in upper case. */ | |
5466 | ||
5467 | char * | |
5468 | ppc_canonicalize_symbol_name (char *name) | |
5469 | { | |
5470 | char *s; | |
5471 | ||
5472 | if (ppc_stab_symbol) | |
5473 | return name; | |
5474 | ||
5475 | for (s = name; *s != '\0' && *s != '{' && *s != '['; s++) | |
5476 | ; | |
5477 | if (*s != '\0') | |
5478 | { | |
5479 | char brac; | |
5480 | ||
5481 | if (*s == '[') | |
5482 | brac = ']'; | |
5483 | else | |
5484 | { | |
5485 | *s = '['; | |
5486 | brac = '}'; | |
5487 | } | |
5488 | ||
5489 | for (s++; *s != '\0' && *s != brac; s++) | |
5490 | *s = TOUPPER (*s); | |
5491 | ||
5492 | if (*s == '\0' || s[1] != '\0') | |
5493 | as_bad (_("bad symbol suffix")); | |
5494 | ||
5495 | *s = ']'; | |
5496 | } | |
5497 | ||
5498 | return name; | |
5499 | } | |
5500 | ||
5501 | /* Set the class of a symbol based on the suffix, if any. This is | |
5502 | called whenever a new symbol is created. */ | |
5503 | ||
5504 | void | |
5505 | ppc_symbol_new_hook (symbolS *sym) | |
5506 | { | |
5507 | struct ppc_tc_sy *tc; | |
5508 | const char *s; | |
5509 | ||
5510 | tc = symbol_get_tc (sym); | |
5511 | tc->next = NULL; | |
5512 | tc->output = 0; | |
5513 | tc->symbol_class = -1; | |
5514 | tc->real_name = NULL; | |
5515 | tc->subseg = 0; | |
5516 | tc->align = 0; | |
5517 | tc->u.size = NULL; | |
5518 | tc->u.dw = NULL; | |
5519 | tc->within = NULL; | |
5520 | ||
5521 | if (ppc_stab_symbol) | |
5522 | return; | |
5523 | ||
5524 | s = strchr (S_GET_NAME (sym), '['); | |
5525 | if (s == (const char *) NULL) | |
5526 | { | |
5527 | /* There is no suffix. */ | |
5528 | return; | |
5529 | } | |
5530 | ||
5531 | ++s; | |
5532 | ||
5533 | switch (s[0]) | |
5534 | { | |
5535 | case 'B': | |
5536 | if (strcmp (s, "BS]") == 0) | |
5537 | tc->symbol_class = XMC_BS; | |
5538 | break; | |
5539 | case 'D': | |
5540 | if (strcmp (s, "DB]") == 0) | |
5541 | tc->symbol_class = XMC_DB; | |
5542 | else if (strcmp (s, "DS]") == 0) | |
5543 | tc->symbol_class = XMC_DS; | |
5544 | break; | |
5545 | case 'G': | |
5546 | if (strcmp (s, "GL]") == 0) | |
5547 | tc->symbol_class = XMC_GL; | |
5548 | break; | |
5549 | case 'P': | |
5550 | if (strcmp (s, "PR]") == 0) | |
5551 | tc->symbol_class = XMC_PR; | |
5552 | break; | |
5553 | case 'R': | |
5554 | if (strcmp (s, "RO]") == 0) | |
5555 | tc->symbol_class = XMC_RO; | |
5556 | else if (strcmp (s, "RW]") == 0) | |
5557 | tc->symbol_class = XMC_RW; | |
5558 | break; | |
5559 | case 'S': | |
5560 | if (strcmp (s, "SV]") == 0) | |
5561 | tc->symbol_class = XMC_SV; | |
5562 | break; | |
5563 | case 'T': | |
5564 | if (strcmp (s, "TC]") == 0) | |
5565 | tc->symbol_class = XMC_TC; | |
5566 | else if (strcmp (s, "TI]") == 0) | |
5567 | tc->symbol_class = XMC_TI; | |
5568 | else if (strcmp (s, "TB]") == 0) | |
5569 | tc->symbol_class = XMC_TB; | |
5570 | else if (strcmp (s, "TC0]") == 0 || strcmp (s, "T0]") == 0) | |
5571 | tc->symbol_class = XMC_TC0; | |
5572 | break; | |
5573 | case 'U': | |
5574 | if (strcmp (s, "UA]") == 0) | |
5575 | tc->symbol_class = XMC_UA; | |
5576 | else if (strcmp (s, "UC]") == 0) | |
5577 | tc->symbol_class = XMC_UC; | |
5578 | break; | |
5579 | case 'X': | |
5580 | if (strcmp (s, "XO]") == 0) | |
5581 | tc->symbol_class = XMC_XO; | |
5582 | break; | |
5583 | } | |
5584 | ||
5585 | if (tc->symbol_class == -1) | |
5586 | as_bad (_("unrecognized symbol suffix")); | |
5587 | } | |
5588 | ||
5589 | /* Set the class of a label based on where it is defined. This | |
5590 | handles symbols without suffixes. Also, move the symbol so that it | |
5591 | follows the csect symbol. */ | |
5592 | ||
5593 | void | |
5594 | ppc_frob_label (symbolS *sym) | |
5595 | { | |
5596 | if (ppc_current_csect != (symbolS *) NULL) | |
5597 | { | |
5598 | if (symbol_get_tc (sym)->symbol_class == -1) | |
5599 | symbol_get_tc (sym)->symbol_class = symbol_get_tc (ppc_current_csect)->symbol_class; | |
5600 | ||
5601 | symbol_remove (sym, &symbol_rootP, &symbol_lastP); | |
5602 | symbol_append (sym, symbol_get_tc (ppc_current_csect)->within, | |
5603 | &symbol_rootP, &symbol_lastP); | |
5604 | symbol_get_tc (ppc_current_csect)->within = sym; | |
5605 | symbol_get_tc (sym)->within = ppc_current_csect; | |
5606 | } | |
5607 | ||
5608 | #ifdef OBJ_ELF | |
5609 | dwarf2_emit_label (sym); | |
5610 | #endif | |
5611 | } | |
5612 | ||
5613 | /* This variable is set by ppc_frob_symbol if any absolute symbols are | |
5614 | seen. It tells ppc_adjust_symtab whether it needs to look through | |
5615 | the symbols. */ | |
5616 | ||
5617 | static bfd_boolean ppc_saw_abs; | |
5618 | ||
5619 | /* Change the name of a symbol just before writing it out. Set the | |
5620 | real name if the .rename pseudo-op was used. Otherwise, remove any | |
5621 | class suffix. Return 1 if the symbol should not be included in the | |
5622 | symbol table. */ | |
5623 | ||
5624 | int | |
5625 | ppc_frob_symbol (symbolS *sym) | |
5626 | { | |
5627 | static symbolS *ppc_last_function; | |
5628 | static symbolS *set_end; | |
5629 | ||
5630 | /* Discard symbols that should not be included in the output symbol | |
5631 | table. */ | |
5632 | if (! symbol_used_in_reloc_p (sym) | |
5633 | && ((symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0 | |
5634 | || (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym)) | |
5635 | && ! symbol_get_tc (sym)->output | |
5636 | && S_GET_STORAGE_CLASS (sym) != C_FILE))) | |
5637 | return 1; | |
5638 | ||
5639 | /* This one will disappear anyway. Don't make a csect sym for it. */ | |
5640 | if (sym == abs_section_sym) | |
5641 | return 1; | |
5642 | ||
5643 | if (symbol_get_tc (sym)->real_name != (char *) NULL) | |
5644 | S_SET_NAME (sym, symbol_get_tc (sym)->real_name); | |
5645 | else | |
5646 | { | |
5647 | const char *name; | |
5648 | const char *s; | |
5649 | ||
5650 | name = S_GET_NAME (sym); | |
5651 | s = strchr (name, '['); | |
5652 | if (s != (char *) NULL) | |
5653 | { | |
5654 | unsigned int len; | |
5655 | char *snew; | |
5656 | ||
5657 | len = s - name; | |
5658 | snew = xmalloc (len + 1); | |
5659 | memcpy (snew, name, len); | |
5660 | snew[len] = '\0'; | |
5661 | ||
5662 | S_SET_NAME (sym, snew); | |
5663 | } | |
5664 | } | |
5665 | ||
5666 | if (set_end != (symbolS *) NULL) | |
5667 | { | |
5668 | SA_SET_SYM_ENDNDX (set_end, sym); | |
5669 | set_end = NULL; | |
5670 | } | |
5671 | ||
5672 | if (SF_GET_FUNCTION (sym)) | |
5673 | { | |
5674 | if (ppc_last_function != (symbolS *) NULL) | |
5675 | as_bad (_("two .function pseudo-ops with no intervening .ef")); | |
5676 | ppc_last_function = sym; | |
5677 | if (symbol_get_tc (sym)->u.size != (symbolS *) NULL) | |
5678 | { | |
5679 | resolve_symbol_value (symbol_get_tc (sym)->u.size); | |
5680 | SA_SET_SYM_FSIZE (sym, | |
5681 | (long) S_GET_VALUE (symbol_get_tc (sym)->u.size)); | |
5682 | } | |
5683 | } | |
5684 | else if (S_GET_STORAGE_CLASS (sym) == C_FCN | |
5685 | && strcmp (S_GET_NAME (sym), ".ef") == 0) | |
5686 | { | |
5687 | if (ppc_last_function == (symbolS *) NULL) | |
5688 | as_bad (_(".ef with no preceding .function")); | |
5689 | else | |
5690 | { | |
5691 | set_end = ppc_last_function; | |
5692 | ppc_last_function = NULL; | |
5693 | ||
5694 | /* We don't have a C_EFCN symbol, but we need to force the | |
5695 | COFF backend to believe that it has seen one. */ | |
5696 | coff_last_function = NULL; | |
5697 | } | |
5698 | } | |
5699 | ||
5700 | if (! (S_IS_EXTERNAL (sym) || S_IS_WEAK (sym)) | |
5701 | && (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) == 0 | |
5702 | && S_GET_STORAGE_CLASS (sym) != C_FILE | |
5703 | && S_GET_STORAGE_CLASS (sym) != C_FCN | |
5704 | && S_GET_STORAGE_CLASS (sym) != C_BLOCK | |
5705 | && S_GET_STORAGE_CLASS (sym) != C_BSTAT | |
5706 | && S_GET_STORAGE_CLASS (sym) != C_ESTAT | |
5707 | && S_GET_STORAGE_CLASS (sym) != C_BINCL | |
5708 | && S_GET_STORAGE_CLASS (sym) != C_EINCL | |
5709 | && S_GET_SEGMENT (sym) != ppc_coff_debug_section) | |
5710 | S_SET_STORAGE_CLASS (sym, C_HIDEXT); | |
5711 | ||
5712 | if (S_GET_STORAGE_CLASS (sym) == C_EXT | |
5713 | || S_GET_STORAGE_CLASS (sym) == C_AIX_WEAKEXT | |
5714 | || S_GET_STORAGE_CLASS (sym) == C_HIDEXT) | |
5715 | { | |
5716 | int i; | |
5717 | union internal_auxent *a; | |
5718 | ||
5719 | /* Create a csect aux. */ | |
5720 | i = S_GET_NUMBER_AUXILIARY (sym); | |
5721 | S_SET_NUMBER_AUXILIARY (sym, i + 1); | |
5722 | a = &coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].u.auxent; | |
5723 | if (symbol_get_tc (sym)->symbol_class == XMC_TC0) | |
5724 | { | |
5725 | /* This is the TOC table. */ | |
5726 | know (strcmp (S_GET_NAME (sym), "TOC") == 0); | |
5727 | a->x_csect.x_scnlen.l = 0; | |
5728 | a->x_csect.x_smtyp = (2 << 3) | XTY_SD; | |
5729 | } | |
5730 | else if (symbol_get_tc (sym)->subseg != 0) | |
5731 | { | |
5732 | /* This is a csect symbol. x_scnlen is the size of the | |
5733 | csect. */ | |
5734 | if (symbol_get_tc (sym)->next == (symbolS *) NULL) | |
5735 | a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput, | |
5736 | S_GET_SEGMENT (sym)) | |
5737 | - S_GET_VALUE (sym)); | |
5738 | else | |
5739 | { | |
5740 | resolve_symbol_value (symbol_get_tc (sym)->next); | |
5741 | a->x_csect.x_scnlen.l = (S_GET_VALUE (symbol_get_tc (sym)->next) | |
5742 | - S_GET_VALUE (sym)); | |
5743 | } | |
5744 | a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_SD; | |
5745 | } | |
5746 | else if (S_GET_SEGMENT (sym) == bss_section) | |
5747 | { | |
5748 | /* This is a common symbol. */ | |
5749 | a->x_csect.x_scnlen.l = symbol_get_frag (sym)->fr_offset; | |
5750 | a->x_csect.x_smtyp = (symbol_get_tc (sym)->align << 3) | XTY_CM; | |
5751 | if (S_IS_EXTERNAL (sym)) | |
5752 | symbol_get_tc (sym)->symbol_class = XMC_RW; | |
5753 | else | |
5754 | symbol_get_tc (sym)->symbol_class = XMC_BS; | |
5755 | } | |
5756 | else if (S_GET_SEGMENT (sym) == absolute_section) | |
5757 | { | |
5758 | /* This is an absolute symbol. The csect will be created by | |
5759 | ppc_adjust_symtab. */ | |
5760 | ppc_saw_abs = TRUE; | |
5761 | a->x_csect.x_smtyp = XTY_LD; | |
5762 | if (symbol_get_tc (sym)->symbol_class == -1) | |
5763 | symbol_get_tc (sym)->symbol_class = XMC_XO; | |
5764 | } | |
5765 | else if (! S_IS_DEFINED (sym)) | |
5766 | { | |
5767 | /* This is an external symbol. */ | |
5768 | a->x_csect.x_scnlen.l = 0; | |
5769 | a->x_csect.x_smtyp = XTY_ER; | |
5770 | } | |
5771 | else if (symbol_get_tc (sym)->symbol_class == XMC_TC) | |
5772 | { | |
5773 | symbolS *next; | |
5774 | ||
5775 | /* This is a TOC definition. x_scnlen is the size of the | |
5776 | TOC entry. */ | |
5777 | next = symbol_next (sym); | |
5778 | while (symbol_get_tc (next)->symbol_class == XMC_TC0) | |
5779 | next = symbol_next (next); | |
5780 | if (next == (symbolS *) NULL | |
5781 | || symbol_get_tc (next)->symbol_class != XMC_TC) | |
5782 | { | |
5783 | if (ppc_after_toc_frag == (fragS *) NULL) | |
5784 | a->x_csect.x_scnlen.l = (bfd_section_size (stdoutput, | |
5785 | data_section) | |
5786 | - S_GET_VALUE (sym)); | |
5787 | else | |
5788 | a->x_csect.x_scnlen.l = (ppc_after_toc_frag->fr_address | |
5789 | - S_GET_VALUE (sym)); | |
5790 | } | |
5791 | else | |
5792 | { | |
5793 | resolve_symbol_value (next); | |
5794 | a->x_csect.x_scnlen.l = (S_GET_VALUE (next) | |
5795 | - S_GET_VALUE (sym)); | |
5796 | } | |
5797 | a->x_csect.x_smtyp = (2 << 3) | XTY_SD; | |
5798 | } | |
5799 | else | |
5800 | { | |
5801 | symbolS *csect; | |
5802 | ||
5803 | /* This is a normal symbol definition. x_scnlen is the | |
5804 | symbol index of the containing csect. */ | |
5805 | if (S_GET_SEGMENT (sym) == text_section) | |
5806 | csect = ppc_text_csects; | |
5807 | else if (S_GET_SEGMENT (sym) == data_section) | |
5808 | csect = ppc_data_csects; | |
5809 | else | |
5810 | abort (); | |
5811 | ||
5812 | /* Skip the initial dummy symbol. */ | |
5813 | csect = symbol_get_tc (csect)->next; | |
5814 | ||
5815 | if (csect == (symbolS *) NULL) | |
5816 | { | |
5817 | as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym)); | |
5818 | a->x_csect.x_scnlen.l = 0; | |
5819 | } | |
5820 | else | |
5821 | { | |
5822 | while (symbol_get_tc (csect)->next != (symbolS *) NULL) | |
5823 | { | |
5824 | resolve_symbol_value (symbol_get_tc (csect)->next); | |
5825 | if (S_GET_VALUE (symbol_get_tc (csect)->next) | |
5826 | > S_GET_VALUE (sym)) | |
5827 | break; | |
5828 | csect = symbol_get_tc (csect)->next; | |
5829 | } | |
5830 | ||
5831 | a->x_csect.x_scnlen.p = | |
5832 | coffsymbol (symbol_get_bfdsym (csect))->native; | |
5833 | coffsymbol (symbol_get_bfdsym (sym))->native[i + 1].fix_scnlen = | |
5834 | 1; | |
5835 | } | |
5836 | a->x_csect.x_smtyp = XTY_LD; | |
5837 | } | |
5838 | ||
5839 | a->x_csect.x_parmhash = 0; | |
5840 | a->x_csect.x_snhash = 0; | |
5841 | if (symbol_get_tc (sym)->symbol_class == -1) | |
5842 | a->x_csect.x_smclas = XMC_PR; | |
5843 | else | |
5844 | a->x_csect.x_smclas = symbol_get_tc (sym)->symbol_class; | |
5845 | a->x_csect.x_stab = 0; | |
5846 | a->x_csect.x_snstab = 0; | |
5847 | ||
5848 | /* Don't let the COFF backend resort these symbols. */ | |
5849 | symbol_get_bfdsym (sym)->flags |= BSF_NOT_AT_END; | |
5850 | } | |
5851 | else if (S_GET_STORAGE_CLASS (sym) == C_BSTAT) | |
5852 | { | |
5853 | /* We want the value to be the symbol index of the referenced | |
5854 | csect symbol. BFD will do that for us if we set the right | |
5855 | flags. */ | |
5856 | asymbol *bsym = symbol_get_bfdsym (symbol_get_tc (sym)->within); | |
5857 | combined_entry_type *c = coffsymbol (bsym)->native; | |
5858 | ||
5859 | S_SET_VALUE (sym, (valueT) (size_t) c); | |
5860 | coffsymbol (symbol_get_bfdsym (sym))->native->fix_value = 1; | |
5861 | } | |
5862 | else if (S_GET_STORAGE_CLASS (sym) == C_STSYM) | |
5863 | { | |
5864 | symbolS *block; | |
5865 | valueT base; | |
5866 | ||
5867 | block = symbol_get_tc (sym)->within; | |
5868 | if (block) | |
5869 | { | |
5870 | /* The value is the offset from the enclosing csect. */ | |
5871 | symbolS *csect; | |
5872 | ||
5873 | csect = symbol_get_tc (block)->within; | |
5874 | resolve_symbol_value (csect); | |
5875 | base = S_GET_VALUE (csect); | |
5876 | } | |
5877 | else | |
5878 | base = 0; | |
5879 | ||
5880 | S_SET_VALUE (sym, S_GET_VALUE (sym) - base); | |
5881 | } | |
5882 | else if (S_GET_STORAGE_CLASS (sym) == C_BINCL | |
5883 | || S_GET_STORAGE_CLASS (sym) == C_EINCL) | |
5884 | { | |
5885 | /* We want the value to be a file offset into the line numbers. | |
5886 | BFD will do that for us if we set the right flags. We have | |
5887 | already set the value correctly. */ | |
5888 | coffsymbol (symbol_get_bfdsym (sym))->native->fix_line = 1; | |
5889 | } | |
5890 | ||
5891 | return 0; | |
5892 | } | |
5893 | ||
5894 | /* Adjust the symbol table. This creates csect symbols for all | |
5895 | absolute symbols. */ | |
5896 | ||
5897 | void | |
5898 | ppc_adjust_symtab (void) | |
5899 | { | |
5900 | symbolS *sym; | |
5901 | ||
5902 | if (! ppc_saw_abs) | |
5903 | return; | |
5904 | ||
5905 | for (sym = symbol_rootP; sym != NULL; sym = symbol_next (sym)) | |
5906 | { | |
5907 | symbolS *csect; | |
5908 | int i; | |
5909 | union internal_auxent *a; | |
5910 | ||
5911 | if (S_GET_SEGMENT (sym) != absolute_section) | |
5912 | continue; | |
5913 | ||
5914 | csect = symbol_create (".abs[XO]", absolute_section, | |
5915 | S_GET_VALUE (sym), &zero_address_frag); | |
5916 | symbol_get_bfdsym (csect)->value = S_GET_VALUE (sym); | |
5917 | S_SET_STORAGE_CLASS (csect, C_HIDEXT); | |
5918 | i = S_GET_NUMBER_AUXILIARY (csect); | |
5919 | S_SET_NUMBER_AUXILIARY (csect, i + 1); | |
5920 | a = &coffsymbol (symbol_get_bfdsym (csect))->native[i + 1].u.auxent; | |
5921 | a->x_csect.x_scnlen.l = 0; | |
5922 | a->x_csect.x_smtyp = XTY_SD; | |
5923 | a->x_csect.x_parmhash = 0; | |
5924 | a->x_csect.x_snhash = 0; | |
5925 | a->x_csect.x_smclas = XMC_XO; | |
5926 | a->x_csect.x_stab = 0; | |
5927 | a->x_csect.x_snstab = 0; | |
5928 | ||
5929 | symbol_insert (csect, sym, &symbol_rootP, &symbol_lastP); | |
5930 | ||
5931 | i = S_GET_NUMBER_AUXILIARY (sym); | |
5932 | a = &coffsymbol (symbol_get_bfdsym (sym))->native[i].u.auxent; | |
5933 | a->x_csect.x_scnlen.p = coffsymbol (symbol_get_bfdsym (csect))->native; | |
5934 | coffsymbol (symbol_get_bfdsym (sym))->native[i].fix_scnlen = 1; | |
5935 | } | |
5936 | ||
5937 | ppc_saw_abs = FALSE; | |
5938 | } | |
5939 | ||
5940 | /* Set the VMA for a section. This is called on all the sections in | |
5941 | turn. */ | |
5942 | ||
5943 | void | |
5944 | ppc_frob_section (asection *sec) | |
5945 | { | |
5946 | static bfd_vma vma = 0; | |
5947 | ||
5948 | /* Dwarf sections start at 0. */ | |
5949 | if (bfd_get_section_flags (NULL, sec) & SEC_DEBUGGING) | |
5950 | return; | |
5951 | ||
5952 | vma = md_section_align (sec, vma); | |
5953 | bfd_set_section_vma (stdoutput, sec, vma); | |
5954 | vma += bfd_section_size (stdoutput, sec); | |
5955 | } | |
5956 | ||
5957 | #endif /* OBJ_XCOFF */ | |
5958 | \f | |
5959 | char * | |
5960 | md_atof (int type, char *litp, int *sizep) | |
5961 | { | |
5962 | return ieee_md_atof (type, litp, sizep, target_big_endian); | |
5963 | } | |
5964 | ||
5965 | /* Write a value out to the object file, using the appropriate | |
5966 | endianness. */ | |
5967 | ||
5968 | void | |
5969 | md_number_to_chars (char *buf, valueT val, int n) | |
5970 | { | |
5971 | if (target_big_endian) | |
5972 | number_to_chars_bigendian (buf, val, n); | |
5973 | else | |
5974 | number_to_chars_littleendian (buf, val, n); | |
5975 | } | |
5976 | ||
5977 | /* Align a section (I don't know why this is machine dependent). */ | |
5978 | ||
5979 | valueT | |
5980 | md_section_align (asection *seg ATTRIBUTE_UNUSED, valueT addr) | |
5981 | { | |
5982 | #ifdef OBJ_ELF | |
5983 | return addr; | |
5984 | #else | |
5985 | int align = bfd_get_section_alignment (stdoutput, seg); | |
5986 | ||
5987 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
5988 | #endif | |
5989 | } | |
5990 | ||
5991 | /* We don't have any form of relaxing. */ | |
5992 | ||
5993 | int | |
5994 | md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED, | |
5995 | asection *seg ATTRIBUTE_UNUSED) | |
5996 | { | |
5997 | abort (); | |
5998 | return 0; | |
5999 | } | |
6000 | ||
6001 | /* Convert a machine dependent frag. We never generate these. */ | |
6002 | ||
6003 | void | |
6004 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, | |
6005 | asection *sec ATTRIBUTE_UNUSED, | |
6006 | fragS *fragp ATTRIBUTE_UNUSED) | |
6007 | { | |
6008 | abort (); | |
6009 | } | |
6010 | ||
6011 | /* We have no need to default values of symbols. */ | |
6012 | ||
6013 | symbolS * | |
6014 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) | |
6015 | { | |
6016 | return 0; | |
6017 | } | |
6018 | \f | |
6019 | /* Functions concerning relocs. */ | |
6020 | ||
6021 | /* The location from which a PC relative jump should be calculated, | |
6022 | given a PC relative reloc. */ | |
6023 | ||
6024 | long | |
6025 | md_pcrel_from_section (fixS *fixp, segT sec ATTRIBUTE_UNUSED) | |
6026 | { | |
6027 | return fixp->fx_frag->fr_address + fixp->fx_where; | |
6028 | } | |
6029 | ||
6030 | #ifdef OBJ_XCOFF | |
6031 | ||
6032 | /* This is called to see whether a fixup should be adjusted to use a | |
6033 | section symbol. We take the opportunity to change a fixup against | |
6034 | a symbol in the TOC subsegment into a reloc against the | |
6035 | corresponding .tc symbol. */ | |
6036 | ||
6037 | int | |
6038 | ppc_fix_adjustable (fixS *fix) | |
6039 | { | |
6040 | valueT val = resolve_symbol_value (fix->fx_addsy); | |
6041 | segT symseg = S_GET_SEGMENT (fix->fx_addsy); | |
6042 | TC_SYMFIELD_TYPE *tc; | |
6043 | ||
6044 | if (symseg == absolute_section) | |
6045 | return 0; | |
6046 | ||
6047 | /* Always adjust symbols in debugging sections. */ | |
6048 | if (bfd_get_section_flags (stdoutput, symseg) & SEC_DEBUGGING) | |
6049 | return 1; | |
6050 | ||
6051 | if (ppc_toc_csect != (symbolS *) NULL | |
6052 | && fix->fx_addsy != ppc_toc_csect | |
6053 | && symseg == data_section | |
6054 | && val >= ppc_toc_frag->fr_address | |
6055 | && (ppc_after_toc_frag == (fragS *) NULL | |
6056 | || val < ppc_after_toc_frag->fr_address)) | |
6057 | { | |
6058 | symbolS *sy; | |
6059 | ||
6060 | for (sy = symbol_next (ppc_toc_csect); | |
6061 | sy != (symbolS *) NULL; | |
6062 | sy = symbol_next (sy)) | |
6063 | { | |
6064 | TC_SYMFIELD_TYPE *sy_tc = symbol_get_tc (sy); | |
6065 | ||
6066 | if (sy_tc->symbol_class == XMC_TC0) | |
6067 | continue; | |
6068 | if (sy_tc->symbol_class != XMC_TC) | |
6069 | break; | |
6070 | if (val == resolve_symbol_value (sy)) | |
6071 | { | |
6072 | fix->fx_addsy = sy; | |
6073 | fix->fx_addnumber = val - ppc_toc_frag->fr_address; | |
6074 | return 0; | |
6075 | } | |
6076 | } | |
6077 | ||
6078 | as_bad_where (fix->fx_file, fix->fx_line, | |
6079 | _("symbol in .toc does not match any .tc")); | |
6080 | } | |
6081 | ||
6082 | /* Possibly adjust the reloc to be against the csect. */ | |
6083 | tc = symbol_get_tc (fix->fx_addsy); | |
6084 | if (tc->subseg == 0 | |
6085 | && tc->symbol_class != XMC_TC0 | |
6086 | && tc->symbol_class != XMC_TC | |
6087 | && symseg != bss_section | |
6088 | /* Don't adjust if this is a reloc in the toc section. */ | |
6089 | && (symseg != data_section | |
6090 | || ppc_toc_csect == NULL | |
6091 | || val < ppc_toc_frag->fr_address | |
6092 | || (ppc_after_toc_frag != NULL | |
6093 | && val >= ppc_after_toc_frag->fr_address))) | |
6094 | { | |
6095 | symbolS *csect = tc->within; | |
6096 | ||
6097 | /* If the symbol was not declared by a label (eg: a section symbol), | |
6098 | use the section instead of the csect. This doesn't happen in | |
6099 | normal AIX assembly code. */ | |
6100 | if (csect == NULL) | |
6101 | csect = seg_info (symseg)->sym; | |
6102 | ||
6103 | fix->fx_offset += val - symbol_get_frag (csect)->fr_address; | |
6104 | fix->fx_addsy = csect; | |
6105 | ||
6106 | return 0; | |
6107 | } | |
6108 | ||
6109 | /* Adjust a reloc against a .lcomm symbol to be against the base | |
6110 | .lcomm. */ | |
6111 | if (symseg == bss_section | |
6112 | && ! S_IS_EXTERNAL (fix->fx_addsy)) | |
6113 | { | |
6114 | symbolS *sy = symbol_get_frag (fix->fx_addsy)->fr_symbol; | |
6115 | ||
6116 | fix->fx_offset += val - resolve_symbol_value (sy); | |
6117 | fix->fx_addsy = sy; | |
6118 | } | |
6119 | ||
6120 | return 0; | |
6121 | } | |
6122 | ||
6123 | /* A reloc from one csect to another must be kept. The assembler | |
6124 | will, of course, keep relocs between sections, and it will keep | |
6125 | absolute relocs, but we need to force it to keep PC relative relocs | |
6126 | between two csects in the same section. */ | |
6127 | ||
6128 | int | |
6129 | ppc_force_relocation (fixS *fix) | |
6130 | { | |
6131 | /* At this point fix->fx_addsy should already have been converted to | |
6132 | a csect symbol. If the csect does not include the fragment, then | |
6133 | we need to force the relocation. */ | |
6134 | if (fix->fx_pcrel | |
6135 | && fix->fx_addsy != NULL | |
6136 | && symbol_get_tc (fix->fx_addsy)->subseg != 0 | |
6137 | && ((symbol_get_frag (fix->fx_addsy)->fr_address | |
6138 | > fix->fx_frag->fr_address) | |
6139 | || (symbol_get_tc (fix->fx_addsy)->next != NULL | |
6140 | && (symbol_get_frag (symbol_get_tc (fix->fx_addsy)->next)->fr_address | |
6141 | <= fix->fx_frag->fr_address)))) | |
6142 | return 1; | |
6143 | ||
6144 | return generic_force_reloc (fix); | |
6145 | } | |
6146 | ||
6147 | void | |
6148 | ppc_new_dot_label (symbolS *sym) | |
6149 | { | |
6150 | /* Anchor this label to the current csect for relocations. */ | |
6151 | symbol_get_tc (sym)->within = ppc_current_csect; | |
6152 | } | |
6153 | ||
6154 | #endif /* OBJ_XCOFF */ | |
6155 | ||
6156 | #ifdef OBJ_ELF | |
6157 | /* If this function returns non-zero, it guarantees that a relocation | |
6158 | will be emitted for a fixup. */ | |
6159 | ||
6160 | int | |
6161 | ppc_force_relocation (fixS *fix) | |
6162 | { | |
6163 | /* Branch prediction relocations must force a relocation, as must | |
6164 | the vtable description relocs. */ | |
6165 | switch (fix->fx_r_type) | |
6166 | { | |
6167 | case BFD_RELOC_PPC_B16_BRTAKEN: | |
6168 | case BFD_RELOC_PPC_B16_BRNTAKEN: | |
6169 | case BFD_RELOC_PPC_BA16_BRTAKEN: | |
6170 | case BFD_RELOC_PPC_BA16_BRNTAKEN: | |
6171 | case BFD_RELOC_24_PLT_PCREL: | |
6172 | case BFD_RELOC_PPC64_TOC: | |
6173 | return 1; | |
6174 | default: | |
6175 | break; | |
6176 | } | |
6177 | ||
6178 | if (fix->fx_r_type >= BFD_RELOC_PPC_TLS | |
6179 | && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA) | |
6180 | return 1; | |
6181 | ||
6182 | return generic_force_reloc (fix); | |
6183 | } | |
6184 | ||
6185 | int | |
6186 | ppc_fix_adjustable (fixS *fix) | |
6187 | { | |
6188 | return (fix->fx_r_type != BFD_RELOC_16_GOTOFF | |
6189 | && fix->fx_r_type != BFD_RELOC_LO16_GOTOFF | |
6190 | && fix->fx_r_type != BFD_RELOC_HI16_GOTOFF | |
6191 | && fix->fx_r_type != BFD_RELOC_HI16_S_GOTOFF | |
6192 | && fix->fx_r_type != BFD_RELOC_PPC64_GOT16_DS | |
6193 | && fix->fx_r_type != BFD_RELOC_PPC64_GOT16_LO_DS | |
6194 | && fix->fx_r_type != BFD_RELOC_GPREL16 | |
6195 | && fix->fx_r_type != BFD_RELOC_VTABLE_INHERIT | |
6196 | && fix->fx_r_type != BFD_RELOC_VTABLE_ENTRY | |
6197 | && !(fix->fx_r_type >= BFD_RELOC_PPC_TLS | |
6198 | && fix->fx_r_type <= BFD_RELOC_PPC64_DTPREL16_HIGHESTA)); | |
6199 | } | |
6200 | #endif | |
6201 | ||
6202 | void | |
6203 | ppc_frag_check (struct frag *fragP) | |
6204 | { | |
6205 | if (!fragP->has_code) | |
6206 | return; | |
6207 | ||
6208 | if (ppc_mach() == bfd_mach_ppc_vle) | |
6209 | { | |
6210 | if (((fragP->fr_address + fragP->insn_addr) & 1) != 0) | |
6211 | as_bad (_("instruction address is not a multiple of 2")); | |
6212 | } | |
6213 | else | |
6214 | { | |
6215 | if (((fragP->fr_address + fragP->insn_addr) & 3) != 0) | |
6216 | as_bad (_("instruction address is not a multiple of 4")); | |
6217 | } | |
6218 | } | |
6219 | ||
6220 | /* Implement HANDLE_ALIGN. This writes the NOP pattern into an | |
6221 | rs_align_code frag. */ | |
6222 | ||
6223 | void | |
6224 | ppc_handle_align (struct frag *fragP) | |
6225 | { | |
6226 | valueT count = (fragP->fr_next->fr_address | |
6227 | - (fragP->fr_address + fragP->fr_fix)); | |
6228 | ||
6229 | if (ppc_mach() == bfd_mach_ppc_vle && count != 0 && (count & 1) == 0) | |
6230 | { | |
6231 | char *dest = fragP->fr_literal + fragP->fr_fix; | |
6232 | ||
6233 | fragP->fr_var = 2; | |
6234 | md_number_to_chars (dest, 0x4400, 2); | |
6235 | } | |
6236 | else if (count != 0 && (count & 3) == 0) | |
6237 | { | |
6238 | char *dest = fragP->fr_literal + fragP->fr_fix; | |
6239 | ||
6240 | fragP->fr_var = 4; | |
6241 | ||
6242 | if (count > 4 * nop_limit && count < 0x2000000) | |
6243 | { | |
6244 | struct frag *rest; | |
6245 | ||
6246 | /* Make a branch, then follow with nops. Insert another | |
6247 | frag to handle the nops. */ | |
6248 | md_number_to_chars (dest, 0x48000000 + count, 4); | |
6249 | count -= 4; | |
6250 | if (count == 0) | |
6251 | return; | |
6252 | ||
6253 | rest = xmalloc (SIZEOF_STRUCT_FRAG + 4); | |
6254 | memcpy (rest, fragP, SIZEOF_STRUCT_FRAG); | |
6255 | fragP->fr_next = rest; | |
6256 | fragP = rest; | |
6257 | rest->fr_address += rest->fr_fix + 4; | |
6258 | rest->fr_fix = 0; | |
6259 | /* If we leave the next frag as rs_align_code we'll come here | |
6260 | again, resulting in a bunch of branches rather than a | |
6261 | branch followed by nops. */ | |
6262 | rest->fr_type = rs_align; | |
6263 | dest = rest->fr_literal; | |
6264 | } | |
6265 | ||
6266 | md_number_to_chars (dest, 0x60000000, 4); | |
6267 | ||
6268 | if ((ppc_cpu & PPC_OPCODE_POWER6) != 0 | |
6269 | || (ppc_cpu & PPC_OPCODE_POWER7) != 0 | |
6270 | || (ppc_cpu & PPC_OPCODE_POWER8) != 0) | |
6271 | { | |
6272 | /* For power6, power7 and power8, we want the last nop to be a group | |
6273 | terminating one. Do this by inserting an rs_fill frag immediately | |
6274 | after this one, with its address set to the last nop location. | |
6275 | This will automatically reduce the number of nops in the current | |
6276 | frag by one. */ | |
6277 | if (count > 4) | |
6278 | { | |
6279 | struct frag *group_nop = xmalloc (SIZEOF_STRUCT_FRAG + 4); | |
6280 | ||
6281 | memcpy (group_nop, fragP, SIZEOF_STRUCT_FRAG); | |
6282 | group_nop->fr_address = group_nop->fr_next->fr_address - 4; | |
6283 | group_nop->fr_fix = 0; | |
6284 | group_nop->fr_offset = 1; | |
6285 | group_nop->fr_type = rs_fill; | |
6286 | fragP->fr_next = group_nop; | |
6287 | dest = group_nop->fr_literal; | |
6288 | } | |
6289 | ||
6290 | if ((ppc_cpu & PPC_OPCODE_POWER7) != 0 | |
6291 | || (ppc_cpu & PPC_OPCODE_POWER8) != 0) | |
6292 | { | |
6293 | if (ppc_cpu & PPC_OPCODE_E500MC) | |
6294 | /* e500mc group terminating nop: "ori 0,0,0". */ | |
6295 | md_number_to_chars (dest, 0x60000000, 4); | |
6296 | else | |
6297 | /* power7/power8 group terminating nop: "ori 2,2,0". */ | |
6298 | md_number_to_chars (dest, 0x60420000, 4); | |
6299 | } | |
6300 | else | |
6301 | /* power6 group terminating nop: "ori 1,1,0". */ | |
6302 | md_number_to_chars (dest, 0x60210000, 4); | |
6303 | } | |
6304 | } | |
6305 | } | |
6306 | ||
6307 | /* Apply a fixup to the object code. This is called for all the | |
6308 | fixups we generated by the calls to fix_new_exp, above. */ | |
6309 | ||
6310 | void | |
6311 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) | |
6312 | { | |
6313 | valueT value = * valP; | |
6314 | ||
6315 | #ifdef OBJ_ELF | |
6316 | if (fixP->fx_addsy != NULL) | |
6317 | { | |
6318 | /* Hack around bfd_install_relocation brain damage. */ | |
6319 | if (fixP->fx_pcrel) | |
6320 | value += fixP->fx_frag->fr_address + fixP->fx_where; | |
6321 | } | |
6322 | else | |
6323 | fixP->fx_done = 1; | |
6324 | #else | |
6325 | /* FIXME FIXME FIXME: The value we are passed in *valP includes | |
6326 | the symbol values. If we are doing this relocation the code in | |
6327 | write.c is going to call bfd_install_relocation, which is also | |
6328 | going to use the symbol value. That means that if the reloc is | |
6329 | fully resolved we want to use *valP since bfd_install_relocation is | |
6330 | not being used. | |
6331 | However, if the reloc is not fully resolved we do not want to | |
6332 | use *valP, and must use fx_offset instead. If the relocation | |
6333 | is PC-relative, we then need to re-apply md_pcrel_from_section | |
6334 | to this new relocation value. */ | |
6335 | if (fixP->fx_addsy == (symbolS *) NULL) | |
6336 | fixP->fx_done = 1; | |
6337 | ||
6338 | else | |
6339 | { | |
6340 | value = fixP->fx_offset; | |
6341 | if (fixP->fx_pcrel) | |
6342 | value -= md_pcrel_from_section (fixP, seg); | |
6343 | } | |
6344 | #endif | |
6345 | ||
6346 | if (fixP->fx_subsy != (symbolS *) NULL) | |
6347 | { | |
6348 | /* We can't actually support subtracting a symbol. */ | |
6349 | as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex")); | |
6350 | } | |
6351 | ||
6352 | if (fixP->fx_pcrel_adjust != 0) | |
6353 | { | |
6354 | /* Handle relocs in an insn. */ | |
6355 | ||
6356 | int opindex = fixP->fx_pcrel_adjust & 0xff; | |
6357 | const struct powerpc_operand *operand = &powerpc_operands[opindex]; | |
6358 | char *where; | |
6359 | unsigned long insn; | |
6360 | offsetT fieldval; | |
6361 | ||
6362 | #ifdef OBJ_XCOFF | |
6363 | /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol | |
6364 | does not generate a reloc. It uses the offset of `sym' within its | |
6365 | csect. Other usages, such as `.long sym', generate relocs. This | |
6366 | is the documented behaviour of non-TOC symbols. */ | |
6367 | if ((operand->flags & PPC_OPERAND_PARENS) != 0 | |
6368 | && (operand->bitm & 0xfff0) == 0xfff0 | |
6369 | && operand->shift == 0 | |
6370 | && (operand->insert == NULL || ppc_obj64) | |
6371 | && fixP->fx_addsy != NULL | |
6372 | && symbol_get_tc (fixP->fx_addsy)->subseg != 0 | |
6373 | && symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC | |
6374 | && symbol_get_tc (fixP->fx_addsy)->symbol_class != XMC_TC0 | |
6375 | && S_GET_SEGMENT (fixP->fx_addsy) != bss_section) | |
6376 | { | |
6377 | value = fixP->fx_offset; | |
6378 | fixP->fx_done = 1; | |
6379 | } | |
6380 | #endif | |
6381 | fieldval = value; | |
6382 | switch (fixP->fx_r_type) | |
6383 | { | |
6384 | #ifdef OBJ_ELF | |
6385 | case BFD_RELOC_PPC64_ADDR16_LO_DS: | |
6386 | if (fixP->fx_pcrel) | |
6387 | goto bad_pcrel; | |
6388 | /* fall through */ | |
6389 | #endif | |
6390 | case BFD_RELOC_LO16: | |
6391 | if (fixP->fx_pcrel) | |
6392 | fixP->fx_r_type = BFD_RELOC_LO16_PCREL; | |
6393 | /* fall through */ | |
6394 | case BFD_RELOC_LO16_PCREL: | |
6395 | fieldval = SEX16 (value); | |
6396 | break; | |
6397 | ||
6398 | case BFD_RELOC_HI16: | |
6399 | if (fixP->fx_pcrel) | |
6400 | fixP->fx_r_type = BFD_RELOC_HI16_PCREL; | |
6401 | /* fall through */ | |
6402 | case BFD_RELOC_HI16_PCREL: | |
6403 | fieldval = SEX16 (PPC_HI (value)); | |
6404 | break; | |
6405 | ||
6406 | case BFD_RELOC_HI16_S: | |
6407 | if (fixP->fx_pcrel) | |
6408 | fixP->fx_r_type = BFD_RELOC_HI16_S_PCREL; | |
6409 | /* fall through */ | |
6410 | case BFD_RELOC_HI16_S_PCREL: | |
6411 | fieldval = SEX16 (PPC_HA (value)); | |
6412 | break; | |
6413 | ||
6414 | #ifdef OBJ_ELF | |
6415 | case BFD_RELOC_PPC64_HIGHER: | |
6416 | if (fixP->fx_pcrel) | |
6417 | goto bad_pcrel; | |
6418 | fieldval = SEX16 (PPC_HIGHER (value)); | |
6419 | break; | |
6420 | ||
6421 | case BFD_RELOC_PPC64_HIGHER_S: | |
6422 | if (fixP->fx_pcrel) | |
6423 | goto bad_pcrel; | |
6424 | fieldval = SEX16 (PPC_HIGHERA (value)); | |
6425 | break; | |
6426 | ||
6427 | case BFD_RELOC_PPC64_HIGHEST: | |
6428 | if (fixP->fx_pcrel) | |
6429 | goto bad_pcrel; | |
6430 | fieldval = SEX16 (PPC_HIGHEST (value)); | |
6431 | break; | |
6432 | ||
6433 | case BFD_RELOC_PPC64_HIGHEST_S: | |
6434 | if (fixP->fx_pcrel) | |
6435 | goto bad_pcrel; | |
6436 | fieldval = SEX16 (PPC_HIGHESTA (value)); | |
6437 | break; | |
6438 | ||
6439 | /* The following relocs can't be calculated by the assembler. | |
6440 | Leave the field zero. */ | |
6441 | case BFD_RELOC_PPC_TPREL16: | |
6442 | case BFD_RELOC_PPC_TPREL16_LO: | |
6443 | case BFD_RELOC_PPC_TPREL16_HI: | |
6444 | case BFD_RELOC_PPC_TPREL16_HA: | |
6445 | case BFD_RELOC_PPC_DTPREL16: | |
6446 | case BFD_RELOC_PPC_DTPREL16_LO: | |
6447 | case BFD_RELOC_PPC_DTPREL16_HI: | |
6448 | case BFD_RELOC_PPC_DTPREL16_HA: | |
6449 | case BFD_RELOC_PPC_GOT_TLSGD16: | |
6450 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: | |
6451 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: | |
6452 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: | |
6453 | case BFD_RELOC_PPC_GOT_TLSLD16: | |
6454 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: | |
6455 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: | |
6456 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: | |
6457 | case BFD_RELOC_PPC_GOT_TPREL16: | |
6458 | case BFD_RELOC_PPC_GOT_TPREL16_LO: | |
6459 | case BFD_RELOC_PPC_GOT_TPREL16_HI: | |
6460 | case BFD_RELOC_PPC_GOT_TPREL16_HA: | |
6461 | case BFD_RELOC_PPC_GOT_DTPREL16: | |
6462 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: | |
6463 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: | |
6464 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: | |
6465 | case BFD_RELOC_PPC64_TPREL16_DS: | |
6466 | case BFD_RELOC_PPC64_TPREL16_LO_DS: | |
6467 | case BFD_RELOC_PPC64_TPREL16_HIGHER: | |
6468 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: | |
6469 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: | |
6470 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: | |
6471 | case BFD_RELOC_PPC64_DTPREL16_DS: | |
6472 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: | |
6473 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: | |
6474 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: | |
6475 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: | |
6476 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: | |
6477 | gas_assert (fixP->fx_addsy != NULL); | |
6478 | S_SET_THREAD_LOCAL (fixP->fx_addsy); | |
6479 | fieldval = 0; | |
6480 | if (fixP->fx_pcrel) | |
6481 | goto bad_pcrel; | |
6482 | break; | |
6483 | ||
6484 | /* These also should leave the field zero for the same | |
6485 | reason. Note that older versions of gas wrote values | |
6486 | here. If we want to go back to the old behaviour, then | |
6487 | all _LO and _LO_DS cases will need to be treated like | |
6488 | BFD_RELOC_LO16_PCREL above. Similarly for _HI etc. */ | |
6489 | case BFD_RELOC_16_GOTOFF: | |
6490 | case BFD_RELOC_LO16_GOTOFF: | |
6491 | case BFD_RELOC_HI16_GOTOFF: | |
6492 | case BFD_RELOC_HI16_S_GOTOFF: | |
6493 | case BFD_RELOC_LO16_PLTOFF: | |
6494 | case BFD_RELOC_HI16_PLTOFF: | |
6495 | case BFD_RELOC_HI16_S_PLTOFF: | |
6496 | case BFD_RELOC_GPREL16: | |
6497 | case BFD_RELOC_16_BASEREL: | |
6498 | case BFD_RELOC_LO16_BASEREL: | |
6499 | case BFD_RELOC_HI16_BASEREL: | |
6500 | case BFD_RELOC_HI16_S_BASEREL: | |
6501 | case BFD_RELOC_PPC_TOC16: | |
6502 | case BFD_RELOC_PPC64_TOC16_LO: | |
6503 | case BFD_RELOC_PPC64_TOC16_HI: | |
6504 | case BFD_RELOC_PPC64_TOC16_HA: | |
6505 | case BFD_RELOC_PPC64_PLTGOT16: | |
6506 | case BFD_RELOC_PPC64_PLTGOT16_LO: | |
6507 | case BFD_RELOC_PPC64_PLTGOT16_HI: | |
6508 | case BFD_RELOC_PPC64_PLTGOT16_HA: | |
6509 | case BFD_RELOC_PPC64_GOT16_DS: | |
6510 | case BFD_RELOC_PPC64_GOT16_LO_DS: | |
6511 | case BFD_RELOC_PPC64_PLT16_LO_DS: | |
6512 | case BFD_RELOC_PPC64_SECTOFF_DS: | |
6513 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: | |
6514 | case BFD_RELOC_PPC64_TOC16_DS: | |
6515 | case BFD_RELOC_PPC64_TOC16_LO_DS: | |
6516 | case BFD_RELOC_PPC64_PLTGOT16_DS: | |
6517 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: | |
6518 | case BFD_RELOC_PPC_EMB_NADDR16: | |
6519 | case BFD_RELOC_PPC_EMB_NADDR16_LO: | |
6520 | case BFD_RELOC_PPC_EMB_NADDR16_HI: | |
6521 | case BFD_RELOC_PPC_EMB_NADDR16_HA: | |
6522 | case BFD_RELOC_PPC_EMB_SDAI16: | |
6523 | case BFD_RELOC_PPC_EMB_SDA2I16: | |
6524 | case BFD_RELOC_PPC_EMB_SDA2REL: | |
6525 | case BFD_RELOC_PPC_EMB_SDA21: | |
6526 | case BFD_RELOC_PPC_EMB_MRKREF: | |
6527 | case BFD_RELOC_PPC_EMB_RELSEC16: | |
6528 | case BFD_RELOC_PPC_EMB_RELST_LO: | |
6529 | case BFD_RELOC_PPC_EMB_RELST_HI: | |
6530 | case BFD_RELOC_PPC_EMB_RELST_HA: | |
6531 | case BFD_RELOC_PPC_EMB_BIT_FLD: | |
6532 | case BFD_RELOC_PPC_EMB_RELSDA: | |
6533 | case BFD_RELOC_PPC_VLE_SDA21: | |
6534 | case BFD_RELOC_PPC_VLE_SDA21_LO: | |
6535 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
6536 | case BFD_RELOC_PPC_VLE_SDAREL_LO16D: | |
6537 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
6538 | case BFD_RELOC_PPC_VLE_SDAREL_HI16D: | |
6539 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
6540 | case BFD_RELOC_PPC_VLE_SDAREL_HA16D: | |
6541 | gas_assert (fixP->fx_addsy != NULL); | |
6542 | /* Fall thru */ | |
6543 | ||
6544 | case BFD_RELOC_PPC_TLS: | |
6545 | case BFD_RELOC_PPC_TLSGD: | |
6546 | case BFD_RELOC_PPC_TLSLD: | |
6547 | fieldval = 0; | |
6548 | if (fixP->fx_pcrel) | |
6549 | goto bad_pcrel; | |
6550 | break; | |
6551 | #endif | |
6552 | ||
6553 | default: | |
6554 | break; | |
6555 | } | |
6556 | ||
6557 | #ifdef OBJ_ELF | |
6558 | /* powerpc uses RELA style relocs, so if emitting a reloc the field | |
6559 | contents can stay at zero. */ | |
6560 | #define APPLY_RELOC fixP->fx_done | |
6561 | #else | |
6562 | #define APPLY_RELOC 1 | |
6563 | #endif | |
6564 | if ((fieldval != 0 && APPLY_RELOC) || operand->insert != NULL) | |
6565 | { | |
6566 | /* Fetch the instruction, insert the fully resolved operand | |
6567 | value, and stuff the instruction back again. */ | |
6568 | where = fixP->fx_frag->fr_literal + fixP->fx_where; | |
6569 | if (target_big_endian) | |
6570 | { | |
6571 | if (fixP->fx_size == 4) | |
6572 | insn = bfd_getb32 ((unsigned char *) where); | |
6573 | else | |
6574 | insn = bfd_getb16 ((unsigned char *) where); | |
6575 | } | |
6576 | else | |
6577 | { | |
6578 | if (fixP->fx_size == 4) | |
6579 | insn = bfd_getl32 ((unsigned char *) where); | |
6580 | else | |
6581 | insn = bfd_getl16 ((unsigned char *) where); | |
6582 | } | |
6583 | insn = ppc_insert_operand (insn, operand, fieldval, | |
6584 | fixP->tc_fix_data.ppc_cpu, | |
6585 | fixP->fx_file, fixP->fx_line); | |
6586 | if (target_big_endian) | |
6587 | { | |
6588 | if (fixP->fx_size == 4) | |
6589 | bfd_putb32 ((bfd_vma) insn, (unsigned char *) where); | |
6590 | else | |
6591 | bfd_putb16 ((bfd_vma) insn, (unsigned char *) where); | |
6592 | } | |
6593 | else | |
6594 | { | |
6595 | if (fixP->fx_size == 4) | |
6596 | bfd_putl32 ((bfd_vma) insn, (unsigned char *) where); | |
6597 | else | |
6598 | bfd_putl16 ((bfd_vma) insn, (unsigned char *) where); | |
6599 | } | |
6600 | } | |
6601 | ||
6602 | if (fixP->fx_done) | |
6603 | /* Nothing else to do here. */ | |
6604 | return; | |
6605 | ||
6606 | gas_assert (fixP->fx_addsy != NULL); | |
6607 | if (fixP->fx_r_type == BFD_RELOC_UNUSED) | |
6608 | { | |
6609 | char *sfile; | |
6610 | unsigned int sline; | |
6611 | ||
6612 | /* Use expr_symbol_where to see if this is an expression | |
6613 | symbol. */ | |
6614 | if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline)) | |
6615 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
6616 | _("unresolved expression that must be resolved")); | |
6617 | else | |
6618 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
6619 | _("unsupported relocation against %s"), | |
6620 | S_GET_NAME (fixP->fx_addsy)); | |
6621 | fixP->fx_done = 1; | |
6622 | return; | |
6623 | } | |
6624 | } | |
6625 | else | |
6626 | { | |
6627 | int size = 0; | |
6628 | offsetT fieldval = value; | |
6629 | ||
6630 | /* Handle relocs in data. */ | |
6631 | switch (fixP->fx_r_type) | |
6632 | { | |
6633 | case BFD_RELOC_CTOR: | |
6634 | if (ppc_obj64) | |
6635 | goto ctor64; | |
6636 | /* fall through */ | |
6637 | ||
6638 | case BFD_RELOC_32: | |
6639 | if (fixP->fx_pcrel) | |
6640 | fixP->fx_r_type = BFD_RELOC_32_PCREL; | |
6641 | /* fall through */ | |
6642 | ||
6643 | case BFD_RELOC_32_PCREL: | |
6644 | case BFD_RELOC_RVA: | |
6645 | size = 4; | |
6646 | break; | |
6647 | ||
6648 | case BFD_RELOC_64: | |
6649 | ctor64: | |
6650 | if (fixP->fx_pcrel) | |
6651 | fixP->fx_r_type = BFD_RELOC_64_PCREL; | |
6652 | /* fall through */ | |
6653 | ||
6654 | case BFD_RELOC_64_PCREL: | |
6655 | size = 8; | |
6656 | break; | |
6657 | ||
6658 | case BFD_RELOC_16: | |
6659 | if (fixP->fx_pcrel) | |
6660 | fixP->fx_r_type = BFD_RELOC_16_PCREL; | |
6661 | /* fall through */ | |
6662 | ||
6663 | case BFD_RELOC_16_PCREL: | |
6664 | size = 2; | |
6665 | break; | |
6666 | ||
6667 | case BFD_RELOC_8: | |
6668 | if (fixP->fx_pcrel) | |
6669 | { | |
6670 | #ifdef OBJ_ELF | |
6671 | bad_pcrel: | |
6672 | #endif | |
6673 | if (fixP->fx_addsy) | |
6674 | { | |
6675 | char *sfile; | |
6676 | unsigned int sline; | |
6677 | ||
6678 | /* Use expr_symbol_where to see if this is an | |
6679 | expression symbol. */ | |
6680 | if (expr_symbol_where (fixP->fx_addsy, &sfile, &sline)) | |
6681 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
6682 | _("unresolved expression that must" | |
6683 | " be resolved")); | |
6684 | else | |
6685 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
6686 | _("cannot emit PC relative %s relocation" | |
6687 | " against %s"), | |
6688 | bfd_get_reloc_code_name (fixP->fx_r_type), | |
6689 | S_GET_NAME (fixP->fx_addsy)); | |
6690 | } | |
6691 | else | |
6692 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
6693 | _("unable to resolve expression")); | |
6694 | fixP->fx_done = 1; | |
6695 | } | |
6696 | else | |
6697 | size = 1; | |
6698 | break; | |
6699 | ||
6700 | case BFD_RELOC_VTABLE_INHERIT: | |
6701 | if (fixP->fx_addsy | |
6702 | && !S_IS_DEFINED (fixP->fx_addsy) | |
6703 | && !S_IS_WEAK (fixP->fx_addsy)) | |
6704 | S_SET_WEAK (fixP->fx_addsy); | |
6705 | /* Fall thru */ | |
6706 | ||
6707 | case BFD_RELOC_VTABLE_ENTRY: | |
6708 | fixP->fx_done = 0; | |
6709 | break; | |
6710 | ||
6711 | #ifdef OBJ_ELF | |
6712 | /* These can appear with @l etc. in data. */ | |
6713 | case BFD_RELOC_LO16: | |
6714 | if (fixP->fx_pcrel) | |
6715 | fixP->fx_r_type = BFD_RELOC_LO16_PCREL; | |
6716 | case BFD_RELOC_LO16_PCREL: | |
6717 | size = 2; | |
6718 | break; | |
6719 | ||
6720 | case BFD_RELOC_HI16: | |
6721 | if (fixP->fx_pcrel) | |
6722 | fixP->fx_r_type = BFD_RELOC_HI16_PCREL; | |
6723 | case BFD_RELOC_HI16_PCREL: | |
6724 | size = 2; | |
6725 | fieldval = PPC_HI (value); | |
6726 | break; | |
6727 | ||
6728 | case BFD_RELOC_HI16_S: | |
6729 | if (fixP->fx_pcrel) | |
6730 | fixP->fx_r_type = BFD_RELOC_HI16_S_PCREL; | |
6731 | case BFD_RELOC_HI16_S_PCREL: | |
6732 | size = 2; | |
6733 | fieldval = PPC_HA (value); | |
6734 | break; | |
6735 | ||
6736 | case BFD_RELOC_PPC64_HIGHER: | |
6737 | if (fixP->fx_pcrel) | |
6738 | goto bad_pcrel; | |
6739 | size = 2; | |
6740 | fieldval = PPC_HIGHER (value); | |
6741 | break; | |
6742 | ||
6743 | case BFD_RELOC_PPC64_HIGHER_S: | |
6744 | if (fixP->fx_pcrel) | |
6745 | goto bad_pcrel; | |
6746 | size = 2; | |
6747 | fieldval = PPC_HIGHERA (value); | |
6748 | break; | |
6749 | ||
6750 | case BFD_RELOC_PPC64_HIGHEST: | |
6751 | if (fixP->fx_pcrel) | |
6752 | goto bad_pcrel; | |
6753 | size = 2; | |
6754 | fieldval = PPC_HIGHEST (value); | |
6755 | break; | |
6756 | ||
6757 | case BFD_RELOC_PPC64_HIGHEST_S: | |
6758 | if (fixP->fx_pcrel) | |
6759 | goto bad_pcrel; | |
6760 | size = 2; | |
6761 | fieldval = PPC_HIGHESTA (value); | |
6762 | break; | |
6763 | ||
6764 | case BFD_RELOC_PPC_DTPMOD: | |
6765 | case BFD_RELOC_PPC_TPREL: | |
6766 | case BFD_RELOC_PPC_DTPREL: | |
6767 | S_SET_THREAD_LOCAL (fixP->fx_addsy); | |
6768 | break; | |
6769 | ||
6770 | /* Just punt all of these to the linker. */ | |
6771 | case BFD_RELOC_PPC_B16_BRTAKEN: | |
6772 | case BFD_RELOC_PPC_B16_BRNTAKEN: | |
6773 | case BFD_RELOC_16_GOTOFF: | |
6774 | case BFD_RELOC_LO16_GOTOFF: | |
6775 | case BFD_RELOC_HI16_GOTOFF: | |
6776 | case BFD_RELOC_HI16_S_GOTOFF: | |
6777 | case BFD_RELOC_LO16_PLTOFF: | |
6778 | case BFD_RELOC_HI16_PLTOFF: | |
6779 | case BFD_RELOC_HI16_S_PLTOFF: | |
6780 | case BFD_RELOC_PPC_COPY: | |
6781 | case BFD_RELOC_PPC_GLOB_DAT: | |
6782 | case BFD_RELOC_16_BASEREL: | |
6783 | case BFD_RELOC_LO16_BASEREL: | |
6784 | case BFD_RELOC_HI16_BASEREL: | |
6785 | case BFD_RELOC_HI16_S_BASEREL: | |
6786 | case BFD_RELOC_PPC_TLS: | |
6787 | case BFD_RELOC_PPC_DTPREL16_LO: | |
6788 | case BFD_RELOC_PPC_DTPREL16_HI: | |
6789 | case BFD_RELOC_PPC_DTPREL16_HA: | |
6790 | case BFD_RELOC_PPC_TPREL16_LO: | |
6791 | case BFD_RELOC_PPC_TPREL16_HI: | |
6792 | case BFD_RELOC_PPC_TPREL16_HA: | |
6793 | case BFD_RELOC_PPC_GOT_TLSGD16: | |
6794 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: | |
6795 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: | |
6796 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: | |
6797 | case BFD_RELOC_PPC_GOT_TLSLD16: | |
6798 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: | |
6799 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: | |
6800 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: | |
6801 | case BFD_RELOC_PPC_GOT_DTPREL16: | |
6802 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: | |
6803 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: | |
6804 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: | |
6805 | case BFD_RELOC_PPC_GOT_TPREL16: | |
6806 | case BFD_RELOC_PPC_GOT_TPREL16_LO: | |
6807 | case BFD_RELOC_PPC_GOT_TPREL16_HI: | |
6808 | case BFD_RELOC_PPC_GOT_TPREL16_HA: | |
6809 | case BFD_RELOC_24_PLT_PCREL: | |
6810 | case BFD_RELOC_PPC_LOCAL24PC: | |
6811 | case BFD_RELOC_32_PLT_PCREL: | |
6812 | case BFD_RELOC_GPREL16: | |
6813 | case BFD_RELOC_PPC_VLE_SDAREL_LO16A: | |
6814 | case BFD_RELOC_PPC_VLE_SDAREL_HI16A: | |
6815 | case BFD_RELOC_PPC_VLE_SDAREL_HA16A: | |
6816 | case BFD_RELOC_PPC_EMB_NADDR32: | |
6817 | case BFD_RELOC_PPC_EMB_NADDR16: | |
6818 | case BFD_RELOC_PPC_EMB_NADDR16_LO: | |
6819 | case BFD_RELOC_PPC_EMB_NADDR16_HI: | |
6820 | case BFD_RELOC_PPC_EMB_NADDR16_HA: | |
6821 | case BFD_RELOC_PPC_EMB_SDAI16: | |
6822 | case BFD_RELOC_PPC_EMB_SDA2REL: | |
6823 | case BFD_RELOC_PPC_EMB_SDA2I16: | |
6824 | case BFD_RELOC_PPC_EMB_SDA21: | |
6825 | case BFD_RELOC_PPC_VLE_SDA21_LO: | |
6826 | case BFD_RELOC_PPC_EMB_MRKREF: | |
6827 | case BFD_RELOC_PPC_EMB_RELSEC16: | |
6828 | case BFD_RELOC_PPC_EMB_RELST_LO: | |
6829 | case BFD_RELOC_PPC_EMB_RELST_HI: | |
6830 | case BFD_RELOC_PPC_EMB_RELST_HA: | |
6831 | case BFD_RELOC_PPC_EMB_BIT_FLD: | |
6832 | case BFD_RELOC_PPC_EMB_RELSDA: | |
6833 | case BFD_RELOC_PPC64_TOC: | |
6834 | case BFD_RELOC_PPC_TOC16: | |
6835 | case BFD_RELOC_PPC64_TOC16_LO: | |
6836 | case BFD_RELOC_PPC64_TOC16_HI: | |
6837 | case BFD_RELOC_PPC64_TOC16_HA: | |
6838 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: | |
6839 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: | |
6840 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: | |
6841 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: | |
6842 | case BFD_RELOC_PPC64_TPREL16_HIGHER: | |
6843 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: | |
6844 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: | |
6845 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: | |
6846 | fixP->fx_done = 0; | |
6847 | break; | |
6848 | #endif | |
6849 | ||
6850 | #ifdef OBJ_XCOFF | |
6851 | case BFD_RELOC_NONE: | |
6852 | break; | |
6853 | #endif | |
6854 | ||
6855 | default: | |
6856 | fprintf (stderr, | |
6857 | _("Gas failure, reloc value %d\n"), fixP->fx_r_type); | |
6858 | fflush (stderr); | |
6859 | abort (); | |
6860 | } | |
6861 | ||
6862 | if (size && APPLY_RELOC) | |
6863 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
6864 | fieldval, size); | |
6865 | } | |
6866 | ||
6867 | #ifdef OBJ_ELF | |
6868 | ppc_elf_validate_fix (fixP, seg); | |
6869 | fixP->fx_addnumber = value; | |
6870 | ||
6871 | /* PowerPC uses RELA relocs, ie. the reloc addend is stored separately | |
6872 | from the section contents. If we are going to be emitting a reloc | |
6873 | then the section contents are immaterial, so don't warn if they | |
6874 | happen to overflow. Leave such warnings to ld. */ | |
6875 | if (!fixP->fx_done) | |
6876 | { | |
6877 | fixP->fx_no_overflow = 1; | |
6878 | ||
6879 | /* Arrange to emit .TOC. as a normal symbol if used in anything | |
6880 | but .TOC.@tocbase. */ | |
6881 | if (ppc_obj64 | |
6882 | && fixP->fx_r_type != BFD_RELOC_PPC64_TOC | |
6883 | && fixP->fx_addsy != NULL | |
6884 | && strcmp (S_GET_NAME (fixP->fx_addsy), ".TOC.") == 0) | |
6885 | symbol_get_bfdsym (fixP->fx_addsy)->flags |= BSF_KEEP; | |
6886 | } | |
6887 | #else | |
6888 | if (fixP->fx_r_type != BFD_RELOC_PPC_TOC16) | |
6889 | fixP->fx_addnumber = 0; | |
6890 | else | |
6891 | { | |
6892 | #ifdef TE_PE | |
6893 | fixP->fx_addnumber = 0; | |
6894 | #else | |
6895 | /* We want to use the offset within the toc, not the actual VMA | |
6896 | of the symbol. */ | |
6897 | fixP->fx_addnumber = | |
6898 | - bfd_get_section_vma (stdoutput, S_GET_SEGMENT (fixP->fx_addsy)) | |
6899 | - S_GET_VALUE (ppc_toc_csect); | |
6900 | #endif | |
6901 | } | |
6902 | #endif | |
6903 | } | |
6904 | ||
6905 | /* Generate a reloc for a fixup. */ | |
6906 | ||
6907 | arelent * | |
6908 | tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, fixS *fixp) | |
6909 | { | |
6910 | arelent *reloc; | |
6911 | ||
6912 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
6913 | ||
6914 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
6915 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
6916 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
6917 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
6918 | if (reloc->howto == (reloc_howto_type *) NULL) | |
6919 | { | |
6920 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
6921 | _("reloc %d not supported by object file format"), | |
6922 | (int) fixp->fx_r_type); | |
6923 | return NULL; | |
6924 | } | |
6925 | reloc->addend = fixp->fx_addnumber; | |
6926 | ||
6927 | return reloc; | |
6928 | } | |
6929 | ||
6930 | void | |
6931 | ppc_cfi_frame_initial_instructions (void) | |
6932 | { | |
6933 | cfi_add_CFA_def_cfa (1, 0); | |
6934 | } | |
6935 | ||
6936 | int | |
6937 | tc_ppc_regname_to_dw2regnum (char *regname) | |
6938 | { | |
6939 | unsigned int regnum = -1; | |
6940 | unsigned int i; | |
6941 | const char *p; | |
6942 | char *q; | |
6943 | static struct { char *name; int dw2regnum; } regnames[] = | |
6944 | { | |
6945 | { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 }, | |
6946 | { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 }, | |
6947 | { "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 }, | |
6948 | { "spe_acc", 111 }, { "spefscr", 112 } | |
6949 | }; | |
6950 | ||
6951 | for (i = 0; i < ARRAY_SIZE (regnames); ++i) | |
6952 | if (strcmp (regnames[i].name, regname) == 0) | |
6953 | return regnames[i].dw2regnum; | |
6954 | ||
6955 | if (regname[0] == 'r' || regname[0] == 'f' || regname[0] == 'v') | |
6956 | { | |
6957 | p = regname + 1 + (regname[1] == '.'); | |
6958 | regnum = strtoul (p, &q, 10); | |
6959 | if (p == q || *q || regnum >= 32) | |
6960 | return -1; | |
6961 | if (regname[0] == 'f') | |
6962 | regnum += 32; | |
6963 | else if (regname[0] == 'v') | |
6964 | regnum += 77; | |
6965 | } | |
6966 | else if (regname[0] == 'c' && regname[1] == 'r') | |
6967 | { | |
6968 | p = regname + 2 + (regname[2] == '.'); | |
6969 | if (p[0] < '0' || p[0] > '7' || p[1]) | |
6970 | return -1; | |
6971 | regnum = p[0] - '0' + 68; | |
6972 | } | |
6973 | return regnum; | |
6974 | } |