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* config/i386/uwin.h: Remove SUBTARGET_PROLOGUE.
[official-gcc.git] / gcc / config / rs6000 / sysv4.h
blobd91dd3d89154829a3b566649bc310cb454bcdbc7
1 /* Target definitions for GNU compiler for PowerPC running System V.4
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
3 Free Software Foundation, Inc.
4 Contributed by Cygnus Support.
5
6 This file is part of GCC.
7
8 GCC is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published
10 by the Free Software Foundation; either version 2, or (at your
11 option) any later version.
12
13 GCC is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING. If not, write to the
20 Free Software Foundation, 59 Temple Place - Suite 330, Boston,
21 MA 02111-1307, USA. */
22
23 /* Header files should be C++ aware in general. */
24 #define NO_IMPLICIT_EXTERN_C
25
26 /* Yes! We are ELF. */
27 #define TARGET_OBJECT_FORMAT OBJECT_ELF
28
29 /* Default ABI to compile code for. */
30 #define DEFAULT_ABI rs6000_current_abi
31
32 /* Default ABI to use. */
33 #define RS6000_ABI_NAME "sysv"
34
35 /* Override rs6000.h definition. */
36 #undef ASM_DEFAULT_SPEC
37 #define ASM_DEFAULT_SPEC "-mppc"
38
39 /* Small data support types. */
40 enum rs6000_sdata_type {
41 SDATA_NONE, /* No small data support. */
42 SDATA_DATA, /* Just put data in .sbss/.sdata, don't use relocs. */
43 SDATA_SYSV, /* Use r13 to point to .sdata/.sbss. */
44 SDATA_EABI /* Use r13 like above, r2 points to .sdata2/.sbss2. */
45 };
46
47 extern enum rs6000_sdata_type rs6000_sdata;
48
49 /* V.4/eabi switches. */
50 #define MASK_NO_BITFIELD_TYPE 0x40000000 /* Set PCC_BITFIELD_TYPE_MATTERS to 0. */
51 #define MASK_STRICT_ALIGN 0x20000000 /* Set STRICT_ALIGNMENT to 1. */
52 #define MASK_RELOCATABLE 0x10000000 /* GOT pointers are PC relative. */
53 #define MASK_EABI 0x08000000 /* Adhere to eabi, not System V spec. */
54 #define MASK_LITTLE_ENDIAN 0x04000000 /* Target is little endian. */
55 #define MASK_REGNAMES 0x02000000 /* Use alternate register names. */
56 #define MASK_PROTOTYPE 0x01000000 /* Only prototyped fcns pass variable args. */
57 #define MASK_NO_BITFIELD_WORD 0x00800000 /* Bitfields cannot cross word boundaries */
58
59 #define TARGET_NO_BITFIELD_TYPE (target_flags & MASK_NO_BITFIELD_TYPE)
60 #define TARGET_STRICT_ALIGN (target_flags & MASK_STRICT_ALIGN)
61 #define TARGET_RELOCATABLE (target_flags & MASK_RELOCATABLE)
62 #define TARGET_EABI (target_flags & MASK_EABI)
63 #define TARGET_LITTLE_ENDIAN (target_flags & MASK_LITTLE_ENDIAN)
64 #define TARGET_REGNAMES (target_flags & MASK_REGNAMES)
65 #define TARGET_PROTOTYPE (target_flags & MASK_PROTOTYPE)
66 #define TARGET_NO_BITFIELD_WORD (target_flags & MASK_NO_BITFIELD_WORD)
67 #define TARGET_TOC ((target_flags & MASK_64BIT) \
68 || ((target_flags & (MASK_RELOCATABLE \
69 | MASK_MINIMAL_TOC)) \
70 && flag_pic > 1) \
71 || DEFAULT_ABI == ABI_AIX)
72
73 #define TARGET_BITFIELD_TYPE (! TARGET_NO_BITFIELD_TYPE)
74 #define TARGET_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)
75 #define TARGET_NO_PROTOTYPE (! TARGET_PROTOTYPE)
76 #define TARGET_NO_TOC (! TARGET_TOC)
77 #define TARGET_NO_EABI (! TARGET_EABI)
78
79 /* Strings provided by SUBTARGET_OPTIONS */
80 extern const char *rs6000_abi_name;
81 extern const char *rs6000_sdata_name;
82 extern const char *rs6000_tls_size_string; /* For -mtls-size= */
83
84 /* Override rs6000.h definition. */
85 #undef SUBTARGET_OPTIONS
86 #define SUBTARGET_OPTIONS \
87 { "call-", &rs6000_abi_name, N_("Select ABI calling convention"), 0}, \
88 { "sdata=", &rs6000_sdata_name, N_("Select method for sdata handling"), 0}, \
89 { "tls-size=", &rs6000_tls_size_string, \
90 N_("Specify bit size of immediate TLS offsets"), 0 }
91
92 #define SDATA_DEFAULT_SIZE 8
93
94 /* Note, V.4 no longer uses a normal TOC, so make -mfull-toc, be just
95 the same as -mminimal-toc. */
96 /* Override rs6000.h definition. */
97 #undef SUBTARGET_SWITCHES
98 #define SUBTARGET_SWITCHES \
99 { "bit-align", -MASK_NO_BITFIELD_TYPE, \
100 N_("Align to the base type of the bit-field") }, \
101 { "no-bit-align", MASK_NO_BITFIELD_TYPE, \
102 N_("Don't align to the base type of the bit-field") }, \
103 { "strict-align", MASK_STRICT_ALIGN, \
104 N_("Don't assume that unaligned accesses are handled by the system") }, \
105 { "no-strict-align", -MASK_STRICT_ALIGN, \
106 N_("Assume that unaligned accesses are handled by the system") }, \
107 { "relocatable", MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
108 N_("Produce code relocatable at runtime") }, \
109 { "no-relocatable", -MASK_RELOCATABLE, \
110 N_("Don't produce code relocatable at runtime") }, \
111 { "relocatable-lib", MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
112 N_("Produce code relocatable at runtime") }, \
113 { "no-relocatable-lib", -MASK_RELOCATABLE, \
114 N_("Don't produce code relocatable at runtime") }, \
115 { "little-endian", MASK_LITTLE_ENDIAN, \
116 N_("Produce little endian code") }, \
117 { "little", MASK_LITTLE_ENDIAN, \
118 N_("Produce little endian code") }, \
119 { "big-endian", -MASK_LITTLE_ENDIAN, \
120 N_("Produce big endian code") }, \
121 { "big", -MASK_LITTLE_ENDIAN, \
122 N_("Produce big endian code") }, \
123 { "no-toc", 0, N_("no description yet") }, \
124 { "toc", MASK_MINIMAL_TOC, N_("no description yet") }, \
125 { "full-toc", MASK_MINIMAL_TOC, N_("no description yet") }, \
126 { "prototype", MASK_PROTOTYPE, N_("no description yet") }, \
127 { "no-prototype", -MASK_PROTOTYPE, N_("no description yet") }, \
128 { "no-traceback", 0, N_("no description yet") }, \
129 { "eabi", MASK_EABI, N_("Use EABI") }, \
130 { "no-eabi", -MASK_EABI, N_("Don't use EABI") }, \
131 { "bit-word", -MASK_NO_BITFIELD_WORD, "" }, \
132 { "no-bit-word", MASK_NO_BITFIELD_WORD, \
133 N_("Do not allow bit-fields to cross word boundaries") }, \
134 { "regnames", MASK_REGNAMES, \
135 N_("Use alternate register names") }, \
136 { "no-regnames", -MASK_REGNAMES, \
137 N_("Don't use alternate register names") }, \
138 { "sdata", 0, N_("no description yet") }, \
139 { "no-sdata", 0, N_("no description yet") }, \
140 { "sim", 0, \
141 N_("Link with libsim.a, libc.a and sim-crt0.o") }, \
142 { "ads", 0, \
143 N_("Link with libads.a, libc.a and crt0.o") }, \
144 { "yellowknife", 0, \
145 N_("Link with libyk.a, libc.a and crt0.o") }, \
146 { "mvme", 0, \
147 N_("Link with libmvme.a, libc.a and crt0.o") }, \
148 { "emb", 0, \
149 N_("Set the PPC_EMB bit in the ELF flags header") }, \
150 { "windiss", 0, N_("Use the WindISS simulator") }, \
151 { "shlib", 0, N_("no description yet") }, \
152 EXTRA_SUBTARGET_SWITCHES \
153 { "newlib", 0, N_("no description yet") },
154
155 /* This is meant to be redefined in the host dependent files. */
156 #define EXTRA_SUBTARGET_SWITCHES
157
158 /* Sometimes certain combinations of command options do not make sense
159 on a particular target machine. You can define a macro
160 `OVERRIDE_OPTIONS' to take account of this. This macro, if
161 defined, is executed once just after all the command options have
162 been parsed.
163
164 The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
165 get control. */
166
167 #define SUBTARGET_OVERRIDE_OPTIONS \
168 do { \
169 extern unsigned HOST_WIDE_INT g_switch_value; \
170 extern int g_switch_set; \
171 \
172 if (!g_switch_set) \
173 g_switch_value = SDATA_DEFAULT_SIZE; \
174 \
175 if (!strcmp (rs6000_abi_name, "sysv")) \
176 rs6000_current_abi = ABI_V4; \
177 else if (!strcmp (rs6000_abi_name, "sysv-noeabi")) \
178 { \
179 rs6000_current_abi = ABI_V4; \
180 target_flags &= ~ MASK_EABI; \
181 } \
182 else if (!strcmp (rs6000_abi_name, "sysv-eabi") \
183 || !strcmp (rs6000_abi_name, "eabi")) \
184 { \
185 rs6000_current_abi = ABI_V4; \
186 target_flags |= MASK_EABI; \
187 } \
188 else if (!strcmp (rs6000_abi_name, "aixdesc")) \
189 rs6000_current_abi = ABI_AIX; \
190 else if (!strcmp (rs6000_abi_name, "freebsd")) \
191 rs6000_current_abi = ABI_V4; \
192 else if (!strcmp (rs6000_abi_name, "linux")) \
193 rs6000_current_abi = ABI_V4; \
194 else if (!strcmp (rs6000_abi_name, "gnu")) \
195 rs6000_current_abi = ABI_V4; \
196 else if (!strcmp (rs6000_abi_name, "netbsd")) \
197 rs6000_current_abi = ABI_V4; \
198 else if (!strcmp (rs6000_abi_name, "i960-old")) \
199 { \
200 rs6000_current_abi = ABI_V4; \
201 target_flags |= (MASK_LITTLE_ENDIAN | MASK_EABI \
202 | MASK_NO_BITFIELD_WORD); \
203 target_flags &= ~MASK_STRICT_ALIGN; \
204 } \
205 else \
206 { \
207 rs6000_current_abi = ABI_V4; \
208 error ("bad value for -mcall-%s", rs6000_abi_name); \
209 } \
210 \
211 if (rs6000_sdata_name) \
212 { \
213 if (!strcmp (rs6000_sdata_name, "none")) \
214 rs6000_sdata = SDATA_NONE; \
215 else if (!strcmp (rs6000_sdata_name, "data")) \
216 rs6000_sdata = SDATA_DATA; \
217 else if (!strcmp (rs6000_sdata_name, "default")) \
218 rs6000_sdata = (TARGET_EABI) ? SDATA_EABI : SDATA_SYSV; \
219 else if (!strcmp (rs6000_sdata_name, "sysv")) \
220 rs6000_sdata = SDATA_SYSV; \
221 else if (!strcmp (rs6000_sdata_name, "eabi")) \
222 rs6000_sdata = SDATA_EABI; \
223 else \
224 error ("bad value for -msdata=%s", rs6000_sdata_name); \
225 } \
226 else if (DEFAULT_ABI == ABI_V4) \
227 { \
228 rs6000_sdata = SDATA_DATA; \
229 rs6000_sdata_name = "data"; \
230 } \
231 else \
232 { \
233 rs6000_sdata = SDATA_NONE; \
234 rs6000_sdata_name = "none"; \
235 } \
236 \
237 if (TARGET_RELOCATABLE && \
238 (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV)) \
239 { \
240 rs6000_sdata = SDATA_DATA; \
241 error ("-mrelocatable and -msdata=%s are incompatible", \
242 rs6000_sdata_name); \
243 } \
244 \
245 else if (flag_pic && DEFAULT_ABI != ABI_AIX \
246 && (rs6000_sdata == SDATA_EABI \
247 || rs6000_sdata == SDATA_SYSV)) \
248 { \
249 rs6000_sdata = SDATA_DATA; \
250 error ("-f%s and -msdata=%s are incompatible", \
251 (flag_pic > 1) ? "PIC" : "pic", \
252 rs6000_sdata_name); \
253 } \
254 \
255 if (rs6000_sdata != SDATA_NONE && DEFAULT_ABI != ABI_V4) \
256 { \
257 rs6000_sdata = SDATA_NONE; \
258 error ("-msdata=%s and -mcall-%s are incompatible", \
259 rs6000_sdata_name, rs6000_abi_name); \
260 } \
261 \
262 targetm.have_srodata_section = rs6000_sdata == SDATA_EABI; \
263 \
264 if (TARGET_RELOCATABLE && !TARGET_MINIMAL_TOC) \
265 { \
266 target_flags |= MASK_MINIMAL_TOC; \
267 error ("-mrelocatable and -mno-minimal-toc are incompatible"); \
268 } \
269 \
270 if (TARGET_RELOCATABLE && rs6000_current_abi == ABI_AIX) \
271 { \
272 target_flags &= ~MASK_RELOCATABLE; \
273 error ("-mrelocatable and -mcall-%s are incompatible", \
274 rs6000_abi_name); \
275 } \
276 \
277 if (flag_pic > 1 && rs6000_current_abi == ABI_AIX) \
278 { \
279 flag_pic = 0; \
280 error ("-fPIC and -mcall-%s are incompatible", \
281 rs6000_abi_name); \
282 } \
283 \
284 if (rs6000_current_abi == ABI_AIX && TARGET_LITTLE_ENDIAN) \
285 { \
286 target_flags &= ~MASK_LITTLE_ENDIAN; \
287 error ("-mcall-aixdesc must be big endian"); \
288 } \
289 \
290 /* Treat -fPIC the same as -mrelocatable. */ \
291 if (flag_pic > 1 && DEFAULT_ABI != ABI_AIX) \
292 target_flags |= MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC; \
293 \
294 else if (TARGET_RELOCATABLE) \
295 flag_pic = 2; \
296 \
297 } while (0)
298
299
300 /* Override rs6000.h definition. */
301 #undef TARGET_DEFAULT
302 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
303
304 /* Override rs6000.h definition. */
305 #undef PROCESSOR_DEFAULT
306 #define PROCESSOR_DEFAULT PROCESSOR_PPC750
307
308 #define FIXED_R2 1
309 /* System V.4 uses register 13 as a pointer to the small data area,
310 so it is not available to the normal user. */
311 #define FIXED_R13 1
312
313 /* Size of the V.4 varargs area if needed. */
314 /* Override rs6000.h definition. */
315 #undef RS6000_VARARGS_AREA
316 #define RS6000_VARARGS_AREA ((cfun->machine->sysv_varargs_p) ? RS6000_VARARGS_SIZE : 0)
317
318 /* Override default big endianism definitions in rs6000.h. */
319 #undef BYTES_BIG_ENDIAN
320 #undef WORDS_BIG_ENDIAN
321 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
322 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
323
324 /* Define this to set the endianness to use in libgcc2.c, which can
325 not depend on target_flags. */
326 #if !defined(__LITTLE_ENDIAN__) && !defined(__sun__)
327 #define LIBGCC2_WORDS_BIG_ENDIAN 1
328 #else
329 #define LIBGCC2_WORDS_BIG_ENDIAN 0
330 #endif
331
332 /* Define cutoff for using external functions to save floating point.
333 Currently on V.4, always use inline stores. */
334 #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
335
336 /* Put jump tables in read-only memory, rather than in .text. */
337 #define JUMP_TABLES_IN_TEXT_SECTION 0
338
339 /* Prefix and suffix to use to saving floating point. */
340 #define SAVE_FP_PREFIX "_savefpr_"
341 #define SAVE_FP_SUFFIX "_l"
342
343 /* Prefix and suffix to use to restoring floating point. */
344 #define RESTORE_FP_PREFIX "_restfpr_"
345 #define RESTORE_FP_SUFFIX "_l"
346
347 /* Type used for ptrdiff_t, as a string used in a declaration. */
348 #define PTRDIFF_TYPE "int"
349
350 /* Type used for wchar_t, as a string used in a declaration. */
351 /* Override svr4.h definition. */
352 #undef WCHAR_TYPE
353 #define WCHAR_TYPE "long int"
354
355 /* Width of wchar_t in bits. */
356 /* Override svr4.h definition. */
357 #undef WCHAR_TYPE_SIZE
358 #define WCHAR_TYPE_SIZE 32
359
360 /* Make int foo : 8 not cause structures to be aligned to an int boundary. */
361 /* Override elfos.h definition. */
362 #undef PCC_BITFIELD_TYPE_MATTERS
363 #define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
364
365 #undef BITFIELD_NBYTES_LIMITED
366 #define BITFIELD_NBYTES_LIMITED (TARGET_NO_BITFIELD_WORD)
367
368 /* Define this macro to be the value 1 if instructions will fail to
369 work if given data not on the nominal alignment. If instructions
370 will merely go slower in that case, define this macro as 0. */
371 #undef STRICT_ALIGNMENT
372 #define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
373
374 /* Alignment in bits of the stack boundary. Note, in order to allow building
375 one set of libraries with -mno-eabi instead of eabi libraries and non-eabi
376 versions, just use 64 as the stack boundary. */
377 #undef STACK_BOUNDARY
378 #define STACK_BOUNDARY (TARGET_ALTIVEC_ABI ? 128 : 64)
379
380 /* Real stack boundary as mandated by the appropriate ABI. */
381 #define ABI_STACK_BOUNDARY ((TARGET_EABI && !TARGET_ALTIVEC_ABI) ? 64 : 128)
382
383 /* An expression for the alignment of a structure field FIELD if the
384 alignment computed in the usual way is COMPUTED. */
385 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
386 ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
387 ? 128 : COMPUTED)
388
389 /* Define this macro as an expression for the alignment of a type
390 (given by TYPE as a tree node) if the alignment computed in the
391 usual way is COMPUTED and the alignment explicitly specified was
392 SPECIFIED. */
393 #define ROUND_TYPE_ALIGN(TYPE, COMPUTED, SPECIFIED) \
394 ((TARGET_ALTIVEC && TREE_CODE (TYPE) == VECTOR_TYPE) \
395 ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \
396 : MAX (COMPUTED, SPECIFIED))
397
398 #undef BIGGEST_FIELD_ALIGNMENT
399
400 /* Use ELF style section commands. */
401
402 #define TEXT_SECTION_ASM_OP "\t.section\t\".text\""
403
404 #define DATA_SECTION_ASM_OP "\t.section\t\".data\""
405
406 #define BSS_SECTION_ASM_OP "\t.section\t\".bss\""
407
408 /* Override elfos.h definition. */
409 #undef INIT_SECTION_ASM_OP
410 #define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
411
412 /* Override elfos.h definition. */
413 #undef FINI_SECTION_ASM_OP
414 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
415
416 #define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
417
418 /* Put PC relative got entries in .got2. */
419 #define MINIMAL_TOC_SECTION_ASM_OP \
420 (TARGET_RELOCATABLE || (flag_pic && DEFAULT_ABI != ABI_AIX) \
421 ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
422
423 #define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
424 #define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
425 #define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
426
427 /* Besides the usual ELF sections, we need a toc section. */
428 /* Override elfos.h definition. */
429 #undef EXTRA_SECTIONS
430 #define EXTRA_SECTIONS in_toc, in_sdata, in_sdata2, in_sbss, in_init, in_fini
431
432 /* Override elfos.h definition. */
433 #undef EXTRA_SECTION_FUNCTIONS
434 #define EXTRA_SECTION_FUNCTIONS \
435 TOC_SECTION_FUNCTION \
436 SDATA_SECTION_FUNCTION \
437 SDATA2_SECTION_FUNCTION \
438 SBSS_SECTION_FUNCTION \
439 INIT_SECTION_FUNCTION \
440 FINI_SECTION_FUNCTION
441
442 #define TOC_SECTION_FUNCTION \
443 void \
444 toc_section () \
445 { \
446 if (in_section != in_toc) \
447 { \
448 in_section = in_toc; \
449 if (DEFAULT_ABI == ABI_AIX \
450 && TARGET_MINIMAL_TOC \
451 && !TARGET_RELOCATABLE) \
452 { \
453 if (! toc_initialized) \
454 { \
455 toc_initialized = 1; \
456 fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
457 (*targetm.asm_out.internal_label) (asm_out_file, "LCTOC", 0); \
458 fprintf (asm_out_file, "\t.tc "); \
459 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1[TC],"); \
460 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
461 fprintf (asm_out_file, "\n"); \
462 \
463 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
464 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
465 fprintf (asm_out_file, " = .+32768\n"); \
466 } \
467 else \
468 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
469 } \
470 else if (DEFAULT_ABI == ABI_AIX && !TARGET_RELOCATABLE) \
471 fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
472 else \
473 { \
474 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
475 if (! toc_initialized) \
476 { \
477 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
478 fprintf (asm_out_file, " = .+32768\n"); \
479 toc_initialized = 1; \
480 } \
481 } \
482 } \
483 } \
484 \
485 extern int in_toc_section PARAMS ((void)); \
486 int in_toc_section () \
487 { \
488 return in_section == in_toc; \
489 }
490
491 #define SDATA_SECTION_FUNCTION \
492 void \
493 sdata_section () \
494 { \
495 if (in_section != in_sdata) \
496 { \
497 in_section = in_sdata; \
498 fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
499 } \
500 }
501
502 #define SDATA2_SECTION_FUNCTION \
503 void \
504 sdata2_section () \
505 { \
506 if (in_section != in_sdata2) \
507 { \
508 in_section = in_sdata2; \
509 fprintf (asm_out_file, "%s\n", SDATA2_SECTION_ASM_OP); \
510 } \
511 }
512
513 #define SBSS_SECTION_FUNCTION \
514 void \
515 sbss_section () \
516 { \
517 if (in_section != in_sbss) \
518 { \
519 in_section = in_sbss; \
520 fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP); \
521 } \
522 }
523
524 #define INIT_SECTION_FUNCTION \
525 void \
526 init_section () \
527 { \
528 if (in_section != in_init) \
529 { \
530 in_section = in_init; \
531 fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP); \
532 } \
533 }
534
535 #define FINI_SECTION_FUNCTION \
536 void \
537 fini_section () \
538 { \
539 if (in_section != in_fini) \
540 { \
541 in_section = in_fini; \
542 fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP); \
543 } \
544 }
545
546 /* Override default elf definitions. */
547 #undef TARGET_ASM_SELECT_RTX_SECTION
548 #define TARGET_ASM_SELECT_RTX_SECTION rs6000_elf_select_rtx_section
549 #undef TARGET_ASM_SELECT_SECTION
550 #define TARGET_ASM_SELECT_SECTION rs6000_elf_select_section
551 #define TARGET_ASM_UNIQUE_SECTION rs6000_elf_unique_section
552
553 /* Return nonzero if this entry is to be written into the constant pool
554 in a special way. We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
555 containing one of them. If -mfp-in-toc (the default), we also do
556 this for floating-point constants. We actually can only do this
557 if the FP formats of the target and host machines are the same, but
558 we can't check that since not every file that uses
559 GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
560
561 Unlike AIX, we don't key off of -mminimal-toc, but instead do not
562 allow floating point constants in the TOC if -mrelocatable. */
563
564 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
565 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
566 (TARGET_TOC \
567 && (GET_CODE (X) == SYMBOL_REF \
568 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
569 && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
570 || GET_CODE (X) == LABEL_REF \
571 || (GET_CODE (X) == CONST_INT \
572 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
573 || (!TARGET_NO_FP_IN_TOC \
574 && !TARGET_RELOCATABLE \
575 && GET_CODE (X) == CONST_DOUBLE \
576 && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
577 && BITS_PER_WORD == HOST_BITS_PER_INT)))
578
579 /* These macros generate the special .type and .size directives which
580 are used to set the corresponding fields of the linker symbol table
581 entries in an ELF object file under SVR4. These macros also output
582 the starting labels for the relevant functions/objects. */
583
584 /* Write the extra assembler code needed to declare a function properly.
585 Some svr4 assemblers need to also have something extra said about the
586 function's return value. We allow for that here. */
587
588 extern int rs6000_pic_labelno;
589
590 /* Override elfos.h definition. */
591 #undef ASM_DECLARE_FUNCTION_NAME
592 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
593 do { \
594 const char *const init_ptr = (TARGET_64BIT) ? ".quad" : ".long"; \
595 \
596 if (TARGET_RELOCATABLE \
597 && (get_pool_size () != 0 || current_function_profile) \
598 && uses_TOC()) \
599 { \
600 char buf[256]; \
601 \
602 (*targetm.asm_out.internal_label) (FILE, "LCL", rs6000_pic_labelno); \
603 \
604 ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1); \
605 fprintf (FILE, "\t%s ", init_ptr); \
606 assemble_name (FILE, buf); \
607 putc ('-', FILE); \
608 ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno); \
609 assemble_name (FILE, buf); \
610 putc ('\n', FILE); \
611 } \
612 \
613 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
614 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
615 \
616 if (DEFAULT_ABI == ABI_AIX) \
617 { \
618 const char *desc_name, *orig_name; \
619 \
620 orig_name = (*targetm.strip_name_encoding) (NAME); \
621 desc_name = orig_name; \
622 while (*desc_name == '.') \
623 desc_name++; \
624 \
625 if (TREE_PUBLIC (DECL)) \
626 fprintf (FILE, "\t.globl %s\n", desc_name); \
627 \
628 fprintf (FILE, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
629 fprintf (FILE, "%s:\n", desc_name); \
630 fprintf (FILE, "\t%s %s\n", init_ptr, orig_name); \
631 fprintf (FILE, "\t%s _GLOBAL_OFFSET_TABLE_\n", init_ptr); \
632 if (DEFAULT_ABI == ABI_AIX) \
633 fprintf (FILE, "\t%s 0\n", init_ptr); \
634 fprintf (FILE, "\t.previous\n"); \
635 } \
636 ASM_OUTPUT_LABEL (FILE, NAME); \
637 } while (0)
638
639 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
640 flag. The LOCAL_LABEL_PREFIX variable is used by dbxelf.h. */
641
642 #define LOCAL_LABEL_PREFIX "."
643 #define USER_LABEL_PREFIX ""
644
645 /* svr4.h overrides (*targetm.asm_out.internal_label). */
646
647 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \
648 asm_fprintf (FILE, "%L%s", PREFIX)
649
650 /* Globalizing directive for a label. */
651 #define GLOBAL_ASM_OP "\t.globl "
652
653 /* This says how to output assembler code to declare an
654 uninitialized internal linkage data object. Under SVR4,
655 the linker seems to want the alignment of data objects
656 to depend on their types. We do exactly that here. */
657
658 #define LOCAL_ASM_OP "\t.local\t"
659
660 #define LCOMM_ASM_OP "\t.lcomm\t"
661
662 /* Override elfos.h definition. */
663 #undef ASM_OUTPUT_ALIGNED_LOCAL
664 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
665 do { \
666 extern unsigned HOST_WIDE_INT g_switch_value; \
667 \
668 if (rs6000_sdata != SDATA_NONE && (SIZE) > 0 \
669 && (SIZE) <= g_switch_value) \
670 { \
671 sbss_section (); \
672 ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT)); \
673 ASM_OUTPUT_LABEL (FILE, NAME); \
674 ASM_OUTPUT_SKIP (FILE, SIZE); \
675 if (!flag_inhibit_size_directive && (SIZE) > 0) \
676 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
677 } \
678 else \
679 { \
680 fprintf (FILE, "%s", LCOMM_ASM_OP); \
681 assemble_name ((FILE), (NAME)); \
682 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
683 (SIZE), (ALIGN) / BITS_PER_UNIT); \
684 } \
685 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
686 } while (0)
687
688 /* Describe how to emit uninitialized external linkage items. */
689 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
690 do { \
691 ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \
692 } while (0)
693
694 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
695 /* To support -falign-* switches we need to use .p2align so
696 that alignment directives in code sections will be padded
697 with no-op instructions, rather than zeroes. */
698 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
699 if ((LOG) != 0) \
700 { \
701 if ((MAX_SKIP) == 0) \
702 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
703 else \
704 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
705 }
706 #endif
707
708 /* This is how to output code to push a register on the stack.
709 It need not be very fast code.
710
711 On the rs6000, we must keep the backchain up to date. In order
712 to simplify things, always allocate 16 bytes for a push (System V
713 wants to keep stack aligned to a 16 byte boundary). */
714
715 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \
716 do { \
717 if (DEFAULT_ABI == ABI_V4) \
718 asm_fprintf (FILE, \
719 "\t{stu|stwu} %s,-16(%s)\n\t{st|stw} %s,12(%s)\n", \
720 reg_names[1], reg_names[1], reg_names[REGNO], \
721 reg_names[1]); \
722 } while (0)
723
724 /* This is how to output an insn to pop a register from the stack.
725 It need not be very fast code. */
726
727 #define ASM_OUTPUT_REG_POP(FILE, REGNO) \
728 do { \
729 if (DEFAULT_ABI == ABI_V4) \
730 asm_fprintf (FILE, \
731 "\t{l|lwz} %s,12(%s)\n\t{ai|addic} %s,%s,16\n", \
732 reg_names[REGNO], reg_names[1], reg_names[1], \
733 reg_names[1]); \
734 } while (0)
735
736 /* Switch Recognition by gcc.c. Add -G xx support. */
737
738 /* Override svr4.h definition. */
739 #undef SWITCH_TAKES_ARG
740 #define SWITCH_TAKES_ARG(CHAR) \
741 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
742 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
743 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
744 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
745 || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
746
747 /* Output .file. */
748 /* Override elfos.h definition. */
749 #undef ASM_FILE_START
750 #define ASM_FILE_START(FILE) \
751 do { \
752 output_file_directive ((FILE), main_input_filename); \
753 rs6000_file_start (FILE, TARGET_CPU_DEFAULT); \
754 } while (0)
755
756
757 extern int fixuplabelno;
758
759 /* Handle constructors specially for -mrelocatable. */
760 #define TARGET_ASM_CONSTRUCTOR rs6000_elf_asm_out_constructor
761 #define TARGET_ASM_DESTRUCTOR rs6000_elf_asm_out_destructor
762
763 /* This is the end of what might become sysv4.h. */
764
765 /* Use DWARF 2 debugging information by default. */
766 #undef PREFERRED_DEBUGGING_TYPE
767 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
768
769 /* Historically we have also supported stabs debugging. */
770 #define DBX_DEBUGGING_INFO 1
771
772 #define TARGET_ENCODE_SECTION_INFO rs6000_elf_encode_section_info
773 #define TARGET_IN_SMALL_DATA_P rs6000_elf_in_small_data_p
774 #define TARGET_SECTION_TYPE_FLAGS rs6000_elf_section_type_flags
775
776 /* The ELF version doesn't encode [DS] or whatever at the end of symbols. */
777
778 #define RS6000_OUTPUT_BASENAME(FILE, NAME) \
779 assemble_name (FILE, NAME)
780
781 /* We have to output the stabs for the function name *first*, before
782 outputting its label. */
783
784 #define DBX_FUNCTION_FIRST
785
786 /* This is the end of what might become sysv4dbx.h. */
787
788 #ifndef TARGET_VERSION
789 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
790 #endif
791 \f
792 #ifndef TARGET_OS_CPP_BUILTINS
793 #define TARGET_OS_CPP_BUILTINS() \
794 do \
795 { \
796 builtin_define_std ("PPC"); \
797 builtin_define_std ("unix"); \
798 builtin_define ("__svr4__"); \
799 builtin_assert ("system=unix"); \
800 builtin_assert ("system=svr4"); \
801 builtin_assert ("cpu=powerpc"); \
802 builtin_assert ("machine=powerpc"); \
803 } \
804 while (0)
805 #endif
806
807 /* Pass various options to the assembler. */
808 /* Override svr4.h definition. */
809 #undef ASM_SPEC
810 #define ASM_SPEC "%(asm_cpu) \
811 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
812 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
813 %{mrelocatable} %{mrelocatable-lib} %{fpic|fpie|fPIC|fPIE:-K PIC} \
814 %{memb|msdata|msdata=eabi: -memb} \
815 %{mlittle|mlittle-endian:-mlittle; \
816 mbig|mbig-endian :-mbig; \
817 mcall-aixdesc | \
818 mcall-freebsd | \
819 mcall-netbsd | \
820 mcall-linux | \
821 mcall-gnu :-mbig; \
822 mcall-i960-old :-mlittle}"
823
824 #define CC1_ENDIAN_BIG_SPEC ""
825
826 #define CC1_ENDIAN_LITTLE_SPEC "\
827 %{!mstrict-align: %{!mno-strict-align: \
828 %{!mcall-i960-old: \
829 -mstrict-align \
830 } \
831 }}"
832
833 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big)"
834
835 /* Pass -G xxx to the compiler and set correct endian mode. */
836 #define CC1_SPEC "%{G*} \
837 %{mlittle|mlittle-endian: %(cc1_endian_little); \
838 mbig |mbig-endian : %(cc1_endian_big); \
839 mcall-aixdesc | \
840 mcall-freebsd | \
841 mcall-netbsd | \
842 mcall-linux | \
843 mcall-gnu : -mbig %(cc1_endian_big); \
844 mcall-i960-old : -mlittle %(cc1_endian_little); \
845 : %(cc1_endian_default)} \
846 %{mno-sdata: -msdata=none } \
847 %{meabi: %{!mcall-*: -mcall-sysv }} \
848 %{!meabi: %{!mno-eabi: \
849 %{mrelocatable: -meabi } \
850 %{mcall-freebsd: -mno-eabi } \
851 %{mcall-i960-old: -meabi } \
852 %{mcall-linux: -mno-eabi } \
853 %{mcall-gnu: -mno-eabi } \
854 %{mcall-netbsd: -mno-eabi }}} \
855 %{msdata: -msdata=default} \
856 %{mno-sdata: -msdata=none} \
857 %{profile: -p}"
858
859 /* Don't put -Y P,<path> for cross compilers. */
860 #ifndef CROSS_COMPILE
861 #define LINK_PATH_SPEC "\
862 %{!R*:%{L*:-R %*}} \
863 %{!nostdlib: %{!YP,*: \
864 %{compat-bsd: \
865 %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
866 %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
867 %{!R*: %{!L*: -R /usr/ucblib}} \
868 %{!compat-bsd: \
869 %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
870 %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
871
872 #else
873 #define LINK_PATH_SPEC ""
874 #endif
875
876 /* Default starting address if specified. */
877 #define LINK_START_SPEC "\
878 %{mads : %(link_start_ads) ; \
879 myellowknife : %(link_start_yellowknife) ; \
880 mmvme : %(link_start_mvme) ; \
881 msim : %(link_start_sim) ; \
882 mwindiss : %(link_start_windiss) ; \
883 mcall-freebsd: %(link_start_freebsd) ; \
884 mcall-linux : %(link_start_linux) ; \
885 mcall-gnu : %(link_start_gnu) ; \
886 mcall-netbsd : %(link_start_netbsd) ; \
887 : %(link_start_default) }"
888
889 #define LINK_START_DEFAULT_SPEC ""
890
891 /* Override svr4.h definition. */
892 #undef LINK_SPEC
893 #define LINK_SPEC "\
894 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
895 %{YP,*} %{R*} \
896 %{Qy:} %{!Qn:-Qy} \
897 %(link_shlib) \
898 %{!Wl,-T*: %{!T*: %(link_start) }} \
899 %(link_target) \
900 %(link_os)"
901
902 /* For now, turn off shared libraries by default. */
903 #ifndef SHARED_LIB_SUPPORT
904 #define NO_SHARED_LIB_SUPPORT
905 #endif
906
907 #ifndef NO_SHARED_LIB_SUPPORT
908 /* Shared libraries are default. */
909 #define LINK_SHLIB_SPEC "\
910 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
911 %{mshlib: } \
912 %{static:-dn -Bstatic} \
913 %{shared:-G -dy -z text} \
914 %{symbolic:-Bsymbolic -G -dy -z text}"
915
916 #else
917 /* Shared libraries are not default. */
918 #define LINK_SHLIB_SPEC "\
919 %{mshlib: %(link_path) } \
920 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
921 %{static: } \
922 %{shared:-G -dy -z text %(link_path) } \
923 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
924 #endif
925
926 /* Override the default target of the linker. */
927 #define LINK_TARGET_SPEC "\
928 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
929 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
930 %{mcall-i960-old: --oformat elf32-powerpcle} \
931 }}}}"
932
933 /* Any specific OS flags. */
934 #define LINK_OS_SPEC "\
935 %{mads : %(link_os_ads) ; \
936 myellowknife : %(link_os_yellowknife) ; \
937 mmvme : %(link_os_mvme) ; \
938 msim : %(link_os_sim) ; \
939 mwindiss : %(link_os_windiss) ; \
940 mcall-freebsd: %(link_os_freebsd) ; \
941 mcall-linux : %(link_os_linux) ; \
942 mcall-gnu : %(link_os_gnu) ; \
943 mcall-netbsd : %(link_os_netbsd) ; \
944 : %(link_os_default) }"
945
946 #define LINK_OS_DEFAULT_SPEC ""
947
948 #define CPP_SYSV_SPEC \
949 "%{mrelocatable*: -D_RELOCATABLE} \
950 %{fpic|fpie: -D__PIC__=1 -D__pic__=1} \
951 %{!fpic: %{fPIC|fPIE: -D__PIC__=2 -D__pic__=2}}"
952
953 /* Override rs6000.h definition. */
954 #undef CPP_SPEC
955 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) \
956 %{mads : %(cpp_os_ads) ; \
957 myellowknife : %(cpp_os_yellowknife) ; \
958 mmvme : %(cpp_os_mvme) ; \
959 msim : %(cpp_os_sim) ; \
960 mwindiss : %(cpp_os_windiss) ; \
961 mcall-freebsd: %(cpp_os_freebsd) ; \
962 mcall-linux : %(cpp_os_linux) ; \
963 mcall-gnu : %(cpp_os_gnu) ; \
964 mcall-netbsd : %(cpp_os_netbsd) ; \
965 : %(cpp_os_default) }"
966
967 #define CPP_OS_DEFAULT_SPEC ""
968
969 /* Override svr4.h definition. */
970 #undef STARTFILE_SPEC
971 #define STARTFILE_SPEC "\
972 %{mads : %(startfile_ads) ; \
973 myellowknife : %(startfile_yellowknife) ; \
974 mmvme : %(startfile_mvme) ; \
975 msim : %(startfile_sim) ; \
976 mwindiss : %(startfile_windiss) ; \
977 mcall-freebsd: %(startfile_freebsd) ; \
978 mcall-linux : %(startfile_linux) ; \
979 mcall-gnu : %(startfile_gnu) ; \
980 mcall-netbsd : %(startfile_netbsd) ; \
981 : %(startfile_default) }"
982
983 #define STARTFILE_DEFAULT_SPEC ""
984
985 /* Override svr4.h definition. */
986 #undef LIB_SPEC
987 #define LIB_SPEC "\
988 %{mads : %(lib_ads) ; \
989 myellowknife : %(lib_yellowknife) ; \
990 mmvme : %(lib_mvme) ; \
991 msim : %(lib_sim) ; \
992 mwindiss : %(lib_windiss) ; \
993 mcall-freebsd: %(lib_freebsd) ; \
994 mcall-linux : %(lib_linux) ; \
995 mcall-gnu : %(lib_gnu) ; \
996 mcall-netbsd : %(lib_netbsd) ; \
997 : %(lib_default) }"
998
999 #define LIB_DEFAULT_SPEC ""
1000
1001 /* Override svr4.h definition. */
1002 #undef ENDFILE_SPEC
1003 #define ENDFILE_SPEC "\
1004 %{mads : crtsavres.o%s %(endfile_ads) ; \
1005 myellowknife : crtsavres.o%s %(endfile_yellowknife) ; \
1006 mmvme : crtsavres.o%s %(endfile_mvme) ; \
1007 msim : crtsavres.o%s %(endfile_sim) ; \
1008 mwindiss : %(endfile_windiss) ; \
1009 mcall-freebsd: crtsavres.o%s %(endfile_freebsd) ; \
1010 mcall-linux : crtsavres.o%s %(endfile_linux) ; \
1011 mcall-gnu : crtsavres.o%s %(endfile_gnu) ; \
1012 mcall-netbsd : crtsavres.o%s %(endfile_netbsd) ; \
1013 : %(crtsavres_default) %(endfile_default) }"
1014
1015 #define CRTSAVRES_DEFAULT_SPEC "crtsavres.o%s"
1016
1017 #define ENDFILE_DEFAULT_SPEC ""
1018
1019 /* Motorola ADS support. */
1020 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
1021
1022 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1023
1024 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
1025
1026 #define LINK_START_ADS_SPEC "-T ads.ld%s"
1027
1028 #define LINK_OS_ADS_SPEC ""
1029
1030 #define CPP_OS_ADS_SPEC ""
1031
1032 /* Motorola Yellowknife support. */
1033 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
1034
1035 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1036
1037 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
1038
1039 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
1040
1041 #define LINK_OS_YELLOWKNIFE_SPEC ""
1042
1043 #define CPP_OS_YELLOWKNIFE_SPEC ""
1044
1045 /* Motorola MVME support. */
1046 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
1047
1048 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1049
1050 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
1051
1052 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
1053
1054 #define LINK_OS_MVME_SPEC ""
1055
1056 #define CPP_OS_MVME_SPEC ""
1057
1058 /* PowerPC simulator based on netbsd system calls support. */
1059 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
1060
1061 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
1062
1063 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
1064
1065 #define LINK_START_SIM_SPEC ""
1066
1067 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
1068
1069 #define CPP_OS_SIM_SPEC ""
1070
1071 /* FreeBSD support. */
1072
1073 #define CPP_OS_FREEBSD_SPEC "\
1074 -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
1075 -Acpu=powerpc -Amachine=powerpc"
1076
1077 #define STARTFILE_FREEBSD_SPEC FBSD_STARTFILE_SPEC
1078 #define ENDFILE_FREEBSD_SPEC FBSD_ENDFILE_SPEC
1079 #define LIB_FREEBSD_SPEC FBSD_LIB_SPEC
1080 #define LINK_START_FREEBSD_SPEC ""
1081
1082 #define LINK_OS_FREEBSD_SPEC "\
1083 %{p:%e`-p' not supported; use `-pg' and gprof(1)} \
1084 %{Wl,*:%*} \
1085 %{v:-V} \
1086 %{assert*} %{R*} %{rpath*} %{defsym*} \
1087 %{shared:-Bshareable %{h*} %{soname*}} \
1088 %{!shared: \
1089 %{!static: \
1090 %{rdynamic: -export-dynamic} \
1091 %{!dynamic-linker: -dynamic-linker /usr/libexec/ld-elf.so.1}} \
1092 %{static:-Bstatic}} \
1093 %{symbolic:-Bsymbolic}"
1094
1095 /* GNU/Linux support. */
1096 #ifdef USE_GNULIBC_1
1097 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1098 %{!mnewlib: -lc }"
1099 #else
1100 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1101 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1102 %{profile:-lc_p} %{!profile:-lc}}}"
1103 #endif
1104
1105 #ifdef USE_GNULIBC_1
1106 #define STARTFILE_LINUX_SPEC "\
1107 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1108 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1109 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1110 #elif defined HAVE_LD_PIE
1111 #define STARTFILE_LINUX_SPEC "\
1112 %{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
1113 %{mnewlib:ecrti.o%s;:crti.o%s} \
1114 %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
1115 #else
1116 #define STARTFILE_LINUX_SPEC "\
1117 %{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}} \
1118 %{mnewlib:ecrti.o%s;:crti.o%s} \
1119 %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
1120 #endif
1121
1122 #define ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1123 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1124
1125 #define LINK_START_LINUX_SPEC ""
1126
1127 #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1128 %{rdynamic:-export-dynamic} \
1129 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1130
1131 #if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR)
1132 # define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
1133 #endif
1134
1135 #ifdef USE_GNULIBC_1
1136 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1137 %{!undef: \
1138 %{!ansi: \
1139 %{!std=*:-Dunix -D__unix -Dlinux -D__linux} \
1140 %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}} \
1141 -Asystem=unix -Asystem=posix"
1142 #else
1143 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1144 %{!undef: \
1145 %{!ansi: \
1146 %{!std=*:-Dunix -D__unix -Dlinux -D__linux} \
1147 %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}} \
1148 -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1149 #endif
1150
1151 /* GNU/Hurd support. */
1152 #define LIB_GNU_SPEC "%{mnewlib: --start-group -lgnu -lc --end-group } \
1153 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1154 %{profile:-lc_p} %{!profile:-lc}}}"
1155
1156 #define STARTFILE_GNU_SPEC "\
1157 %{!shared: %{!static: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}} \
1158 %{static: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
1159 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1160 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1161
1162 #define ENDFILE_GNU_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1163 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1164
1165 #define LINK_START_GNU_SPEC ""
1166
1167 #define LINK_OS_GNU_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1168 %{rdynamic:-export-dynamic} \
1169 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1170
1171 #define CPP_OS_GNU_SPEC "-D__unix__ -D__gnu_hurd__ -D__GNU__ \
1172 %{!undef: \
1173 %{!ansi: -Dunix -D__unix}} \
1174 -Asystem=gnu -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1175
1176 /* NetBSD support. */
1177 #define LIB_NETBSD_SPEC "\
1178 %{profile:-lgmon -lc_p} %{!profile:-lc}"
1179
1180 #define STARTFILE_NETBSD_SPEC "\
1181 ncrti.o%s crt0.o%s \
1182 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1183
1184 #define ENDFILE_NETBSD_SPEC "\
1185 %{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1186 ncrtn.o%s"
1187
1188 #define LINK_START_NETBSD_SPEC "\
1189 "
1190
1191 #define LINK_OS_NETBSD_SPEC "\
1192 %{!shared: %{!static: \
1193 %{rdynamic:-export-dynamic} \
1194 %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
1195
1196 #define CPP_OS_NETBSD_SPEC "\
1197 -D__powerpc__ -D__NetBSD__ -D__KPRINTF_ATTRIBUTE__"
1198
1199 /* WindISS support. */
1200
1201 #define LIB_WINDISS_SPEC "--start-group -li -lcfp -lwindiss -lram -limpl -limpfp --end-group"
1202
1203 #define CPP_OS_WINDISS_SPEC "\
1204 -D__rtasim \
1205 -D__EABI__ \
1206 -D__ppc \
1207 %{!msoft-float: -D__hardfp} \
1208 "
1209
1210 #define STARTFILE_WINDISS_SPEC "crt0.o%s crtbegin.o%s"
1211
1212 #define ENDFILE_WINDISS_SPEC "crtend.o%s"
1213
1214 #define LINK_START_WINDISS_SPEC ""
1215
1216 #define LINK_OS_WINDISS_SPEC ""
1217
1218 /* Define any extra SPECS that the compiler needs to generate. */
1219 /* Override rs6000.h definition. */
1220 #undef SUBTARGET_EXTRA_SPECS
1221 #define SUBTARGET_EXTRA_SPECS \
1222 { "cpp_sysv", CPP_SYSV_SPEC }, \
1223 { "crtsavres_default", CRTSAVRES_DEFAULT_SPEC }, \
1224 { "lib_ads", LIB_ADS_SPEC }, \
1225 { "lib_yellowknife", LIB_YELLOWKNIFE_SPEC }, \
1226 { "lib_mvme", LIB_MVME_SPEC }, \
1227 { "lib_sim", LIB_SIM_SPEC }, \
1228 { "lib_freebsd", LIB_FREEBSD_SPEC }, \
1229 { "lib_gnu", LIB_GNU_SPEC }, \
1230 { "lib_linux", LIB_LINUX_SPEC }, \
1231 { "lib_netbsd", LIB_NETBSD_SPEC }, \
1232 { "lib_windiss", LIB_WINDISS_SPEC }, \
1233 { "lib_default", LIB_DEFAULT_SPEC }, \
1234 { "startfile_ads", STARTFILE_ADS_SPEC }, \
1235 { "startfile_yellowknife", STARTFILE_YELLOWKNIFE_SPEC }, \
1236 { "startfile_mvme", STARTFILE_MVME_SPEC }, \
1237 { "startfile_sim", STARTFILE_SIM_SPEC }, \
1238 { "startfile_freebsd", STARTFILE_FREEBSD_SPEC }, \
1239 { "startfile_gnu", STARTFILE_GNU_SPEC }, \
1240 { "startfile_linux", STARTFILE_LINUX_SPEC }, \
1241 { "startfile_netbsd", STARTFILE_NETBSD_SPEC }, \
1242 { "startfile_windiss", STARTFILE_WINDISS_SPEC }, \
1243 { "startfile_default", STARTFILE_DEFAULT_SPEC }, \
1244 { "endfile_ads", ENDFILE_ADS_SPEC }, \
1245 { "endfile_yellowknife", ENDFILE_YELLOWKNIFE_SPEC }, \
1246 { "endfile_mvme", ENDFILE_MVME_SPEC }, \
1247 { "endfile_sim", ENDFILE_SIM_SPEC }, \
1248 { "endfile_freebsd", ENDFILE_FREEBSD_SPEC }, \
1249 { "endfile_gnu", ENDFILE_GNU_SPEC }, \
1250 { "endfile_linux", ENDFILE_LINUX_SPEC }, \
1251 { "endfile_netbsd", ENDFILE_NETBSD_SPEC }, \
1252 { "endfile_windiss", ENDFILE_WINDISS_SPEC }, \
1253 { "endfile_default", ENDFILE_DEFAULT_SPEC }, \
1254 { "link_path", LINK_PATH_SPEC }, \
1255 { "link_shlib", LINK_SHLIB_SPEC }, \
1256 { "link_target", LINK_TARGET_SPEC }, \
1257 { "link_start", LINK_START_SPEC }, \
1258 { "link_start_ads", LINK_START_ADS_SPEC }, \
1259 { "link_start_yellowknife", LINK_START_YELLOWKNIFE_SPEC }, \
1260 { "link_start_mvme", LINK_START_MVME_SPEC }, \
1261 { "link_start_sim", LINK_START_SIM_SPEC }, \
1262 { "link_start_freebsd", LINK_START_FREEBSD_SPEC }, \
1263 { "link_start_gnu", LINK_START_GNU_SPEC }, \
1264 { "link_start_linux", LINK_START_LINUX_SPEC }, \
1265 { "link_start_netbsd", LINK_START_NETBSD_SPEC }, \
1266 { "link_start_windiss", LINK_START_WINDISS_SPEC }, \
1267 { "link_start_default", LINK_START_DEFAULT_SPEC }, \
1268 { "link_os", LINK_OS_SPEC }, \
1269 { "link_os_ads", LINK_OS_ADS_SPEC }, \
1270 { "link_os_yellowknife", LINK_OS_YELLOWKNIFE_SPEC }, \
1271 { "link_os_mvme", LINK_OS_MVME_SPEC }, \
1272 { "link_os_sim", LINK_OS_SIM_SPEC }, \
1273 { "link_os_freebsd", LINK_OS_FREEBSD_SPEC }, \
1274 { "link_os_linux", LINK_OS_LINUX_SPEC }, \
1275 { "link_os_gnu", LINK_OS_GNU_SPEC }, \
1276 { "link_os_netbsd", LINK_OS_NETBSD_SPEC }, \
1277 { "link_os_windiss", LINK_OS_WINDISS_SPEC }, \
1278 { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
1279 { "cc1_endian_big", CC1_ENDIAN_BIG_SPEC }, \
1280 { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
1281 { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
1282 { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
1283 { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
1284 { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
1285 { "cpp_os_sim", CPP_OS_SIM_SPEC }, \
1286 { "cpp_os_freebsd", CPP_OS_FREEBSD_SPEC }, \
1287 { "cpp_os_gnu", CPP_OS_GNU_SPEC }, \
1288 { "cpp_os_linux", CPP_OS_LINUX_SPEC }, \
1289 { "cpp_os_netbsd", CPP_OS_NETBSD_SPEC }, \
1290 { "cpp_os_windiss", CPP_OS_WINDISS_SPEC }, \
1291 { "cpp_os_default", CPP_OS_DEFAULT_SPEC },
1292
1293 /* Define this macro as a C expression for the initializer of an
1294 array of string to tell the driver program which options are
1295 defaults for this target and thus do not need to be handled
1296 specially when using `MULTILIB_OPTIONS'.
1297
1298 Do not define this macro if `MULTILIB_OPTIONS' is not defined in
1299 the target makefile fragment or if none of the options listed in
1300 `MULTILIB_OPTIONS' are set by default. *Note Target Fragment::. */
1301
1302 #define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
1303
1304 /* Define this macro if the code for function profiling should come
1305 before the function prologue. Normally, the profiling code comes
1306 after. */
1307 #define PROFILE_BEFORE_PROLOGUE 1
1308
1309 /* Function name to call to do profiling. */
1310 #define RS6000_MCOUNT "_mcount"
1311
1312 /* Define this macro (to a value of 1) if you want to support the
1313 Win32 style pragmas #pragma pack(push,<n>)' and #pragma
1314 pack(pop)'. The pack(push,<n>) pragma specifies the maximum
1315 alignment (in bytes) of fields within a structure, in much the
1316 same way as the __aligned__' and __packed__' __attribute__'s
1317 do. A pack value of zero resets the behavior to the default.
1318 Successive invocations of this pragma cause the previous values to
1319 be stacked, so that invocations of #pragma pack(pop)' will return
1320 to the previous value. */
1321
1322 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
1323
1324 /* Define library calls for quad FP operations. These are all part of the
1325 PowerPC 32bit ABI. */
1326 #define ADDTF3_LIBCALL "_q_add"
1327 #define DIVTF3_LIBCALL "_q_div"
1328 #define EXTENDDFTF2_LIBCALL "_q_dtoq"
1329 #define EQTF2_LIBCALL "_q_feq"
1330 #define GETF2_LIBCALL "_q_fge"
1331 #define GTTF2_LIBCALL "_q_fgt"
1332 #define LETF2_LIBCALL "_q_fle"
1333 #define LTTF2_LIBCALL "_q_flt"
1334 #define NETF2_LIBCALL "_q_fne"
1335 #define FLOATSITF2_LIBCALL "_q_itoq"
1336 #define MULTF3_LIBCALL "_q_mul"
1337 #define NEGTF2_LIBCALL "_q_neg"
1338 #define TRUNCTFDF2_LIBCALL "_q_qtod"
1339 #define FIX_TRUNCTFSI2_LIBCALL "_q_qtoi"
1340 #define TRUNCTFSF2_LIBCALL "_q_qtos"
1341 #define FIXUNS_TRUNCTFSI2_LIBCALL "_q_qtou"
1342 #define SQRTTF_LIBCALL "_q_sqrt"
1343 #define EXTENDSFTF2_LIBCALL "_q_stoq"
1344 #define SUBTF3_LIBCALL "_q_sub"
1345 #define FLOATUNSSITF2_LIBCALL "_q_utoq"
1346
1347 #define INIT_TARGET_OPTABS \
1348 do { \
1349 if (TARGET_HARD_FLOAT) \
1350 { \
1351 add_optab->handlers[(int) TFmode].libfunc \
1352 = init_one_libfunc (ADDTF3_LIBCALL); \
1353 sub_optab->handlers[(int) TFmode].libfunc \
1354 = init_one_libfunc (SUBTF3_LIBCALL); \
1355 neg_optab->handlers[(int) TFmode].libfunc \
1356 = init_one_libfunc (NEGTF2_LIBCALL); \
1357 smul_optab->handlers[(int) TFmode].libfunc \
1358 = init_one_libfunc (MULTF3_LIBCALL); \
1359 sdiv_optab->handlers[(int) TFmode].libfunc \
1360 = init_one_libfunc (DIVTF3_LIBCALL); \
1361 eqtf2_libfunc = init_one_libfunc (EQTF2_LIBCALL); \
1362 netf2_libfunc = init_one_libfunc (NETF2_LIBCALL); \
1363 gttf2_libfunc = init_one_libfunc (GTTF2_LIBCALL); \
1364 getf2_libfunc = init_one_libfunc (GETF2_LIBCALL); \
1365 lttf2_libfunc = init_one_libfunc (LTTF2_LIBCALL); \
1366 letf2_libfunc = init_one_libfunc (LETF2_LIBCALL); \
1367 trunctfsf2_libfunc = init_one_libfunc (TRUNCTFSF2_LIBCALL); \
1368 trunctfdf2_libfunc = init_one_libfunc (TRUNCTFDF2_LIBCALL); \
1369 extendsftf2_libfunc = init_one_libfunc (EXTENDSFTF2_LIBCALL); \
1370 extenddftf2_libfunc = init_one_libfunc (EXTENDDFTF2_LIBCALL); \
1371 floatsitf_libfunc = init_one_libfunc (FLOATSITF2_LIBCALL); \
1372 fixtfsi_libfunc = init_one_libfunc (FIX_TRUNCTFSI2_LIBCALL); \
1373 fixunstfsi_libfunc \
1374 = init_one_libfunc (FIXUNS_TRUNCTFSI2_LIBCALL); \
1375 if (TARGET_PPC_GPOPT || TARGET_POWER2) \
1376 sqrt_optab->handlers[(int) TFmode].libfunc \
1377 = init_one_libfunc (SQRTTF_LIBCALL); \
1378 } \
1379 } while (0)
1380
1381 /* Select a format to encode pointers in exception handling data. CODE
1382 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
1383 true if the symbol may be affected by dynamic relocations. */
1384 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
1385 ((flag_pic || TARGET_RELOCATABLE) \
1386 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1387 : DW_EH_PE_absptr)
1388
1389 #define TARGET_ASM_EXCEPTION_SECTION readonly_data_section
1390
1391 #define DOUBLE_INT_ASM_OP "\t.quad\t"
1392
1393 /* Generate entries in .fixup for relocatable addresses. */
1394 #define RELOCATABLE_NEEDS_FIXUP
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