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FSF GCC merge 02/23/03
[official-gcc.git] / gcc / config / rs6000 / sysv4.h
blob503deaf398ae8e038752fe85d6f7949ede2718d3
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 GNU CC.
7
8 GNU CC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 GNU CC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GNU CC; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
22
23
24 /* Header files should be C++ aware in general. */
25 #define NO_IMPLICIT_EXTERN_C
26
27 /* Yes! We are ELF. */
28 #define TARGET_OBJECT_FORMAT OBJECT_ELF
29
30 /* Default ABI to compile code for. */
31 #define DEFAULT_ABI rs6000_current_abi
32
33 /* Default ABI to use. */
34 #define RS6000_ABI_NAME "sysv"
35
36 /* Override rs6000.h definition. */
37 #undef ASM_DEFAULT_SPEC
38 #define ASM_DEFAULT_SPEC "-mppc"
39
40 /* Small data support types. */
41 enum rs6000_sdata_type {
42 SDATA_NONE, /* No small data support. */
43 SDATA_DATA, /* Just put data in .sbss/.sdata, don't use relocs. */
44 SDATA_SYSV, /* Use r13 to point to .sdata/.sbss. */
45 SDATA_EABI /* Use r13 like above, r2 points to .sdata2/.sbss2. */
46 };
47
48 extern enum rs6000_sdata_type rs6000_sdata;
49
50 /* V.4/eabi switches. */
51 #define MASK_NO_BITFIELD_TYPE 0x40000000 /* Set PCC_BITFIELD_TYPE_MATTERS to 0. */
52 #define MASK_STRICT_ALIGN 0x20000000 /* Set STRICT_ALIGNMENT to 1. */
53 #define MASK_RELOCATABLE 0x10000000 /* GOT pointers are PC relative. */
54 #define MASK_EABI 0x08000000 /* Adhere to eabi, not System V spec. */
55 #define MASK_LITTLE_ENDIAN 0x04000000 /* Target is little endian. */
56 #define MASK_REGNAMES 0x02000000 /* Use alternate register names. */
57 #define MASK_PROTOTYPE 0x01000000 /* Only prototyped fcns pass variable args. */
58 #define MASK_NO_BITFIELD_WORD 0x00800000 /* Bitfields cannot cross word boundaries */
59
60 #define TARGET_NO_BITFIELD_TYPE (target_flags & MASK_NO_BITFIELD_TYPE)
61 #define TARGET_STRICT_ALIGN (target_flags & MASK_STRICT_ALIGN)
62 #define TARGET_RELOCATABLE (target_flags & MASK_RELOCATABLE)
63 #define TARGET_EABI (target_flags & MASK_EABI)
64 #define TARGET_LITTLE_ENDIAN (target_flags & MASK_LITTLE_ENDIAN)
65 #define TARGET_REGNAMES (target_flags & MASK_REGNAMES)
66 #define TARGET_PROTOTYPE (target_flags & MASK_PROTOTYPE)
67 #define TARGET_NO_BITFIELD_WORD (target_flags & MASK_NO_BITFIELD_WORD)
68 #define TARGET_TOC ((target_flags & MASK_64BIT) \
69 || ((target_flags & (MASK_RELOCATABLE \
70 | MASK_MINIMAL_TOC)) \
71 && flag_pic > 1) \
72 || DEFAULT_ABI == ABI_AIX)
73
74 #define TARGET_BITFIELD_TYPE (! TARGET_NO_BITFIELD_TYPE)
75 #define TARGET_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)
76 #define TARGET_NO_PROTOTYPE (! TARGET_PROTOTYPE)
77 #define TARGET_NO_TOC (! TARGET_TOC)
78 #define TARGET_NO_EABI (! TARGET_EABI)
79
80 /* Strings provided by SUBTARGET_OPTIONS */
81 extern const char *rs6000_abi_name;
82 extern const char *rs6000_sdata_name;
83
84 /* Override rs6000.h definition. */
85 #undef SUBTARGET_OPTIONS
86 #define SUBTARGET_OPTIONS \
87 { "call-", &rs6000_abi_name, N_("Select ABI calling convention") }, \
88 { "sdata=", &rs6000_sdata_name, N_("Select method for sdata handling") }
89
90 /* Max # of bytes for variables to automatically be put into the .sdata
91 or .sdata2 sections. */
92 extern int g_switch_value; /* Value of the -G xx switch. */
93 extern int g_switch_set; /* Whether -G xx was passed. */
94
95 #define SDATA_DEFAULT_SIZE 8
96
97 /* Note, V.4 no longer uses a normal TOC, so make -mfull-toc, be just
98 the same as -mminimal-toc. */
99 /* Override rs6000.h definition. */
100 #undef SUBTARGET_SWITCHES
101 #define SUBTARGET_SWITCHES \
102 { "bit-align", -MASK_NO_BITFIELD_TYPE, \
103 N_("Align to the base type of the bit-field") }, \
104 { "no-bit-align", MASK_NO_BITFIELD_TYPE, \
105 N_("Don't align to the base type of the bit-field") }, \
106 { "strict-align", MASK_STRICT_ALIGN, \
107 N_("Don't assume that unaligned accesses are handled by the system") }, \
108 { "no-strict-align", -MASK_STRICT_ALIGN, \
109 N_("Assume that unaligned accesses are handled by the system") }, \
110 { "relocatable", MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
111 N_("Produce code relocatable at runtime") }, \
112 { "no-relocatable", -MASK_RELOCATABLE, \
113 N_("Don't produce code relocatable at runtime") }, \
114 { "relocatable-lib", MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
115 N_("Produce code relocatable at runtime") }, \
116 { "no-relocatable-lib", -MASK_RELOCATABLE, \
117 N_("Don't produce code relocatable at runtime") }, \
118 { "little-endian", MASK_LITTLE_ENDIAN, \
119 N_("Produce little endian code") }, \
120 { "little", MASK_LITTLE_ENDIAN, \
121 N_("Produce little endian code") }, \
122 { "big-endian", -MASK_LITTLE_ENDIAN, \
123 N_("Produce big endian code") }, \
124 { "big", -MASK_LITTLE_ENDIAN, \
125 N_("Produce big endian code") }, \
126 { "no-toc", 0, N_("no description yet") }, \
127 { "toc", MASK_MINIMAL_TOC, N_("no description yet") }, \
128 { "full-toc", MASK_MINIMAL_TOC, N_("no description yet") }, \
129 { "prototype", MASK_PROTOTYPE, N_("no description yet") }, \
130 { "no-prototype", -MASK_PROTOTYPE, N_("no description yet") }, \
131 { "no-traceback", 0, N_("no description yet") }, \
132 { "eabi", MASK_EABI, N_("Use EABI") }, \
133 { "no-eabi", -MASK_EABI, N_("Don't use EABI") }, \
134 { "bit-word", -MASK_NO_BITFIELD_WORD, "" }, \
135 { "no-bit-word", MASK_NO_BITFIELD_WORD, \
136 N_("Do not allow bit-fields to cross word boundaries") }, \
137 { "regnames", MASK_REGNAMES, \
138 N_("Use alternate register names") }, \
139 { "no-regnames", -MASK_REGNAMES, \
140 N_("Don't use alternate register names") }, \
141 { "sdata", 0, N_("no description yet") }, \
142 { "no-sdata", 0, N_("no description yet") }, \
143 { "sim", 0, \
144 N_("Link with libsim.a, libc.a and sim-crt0.o") }, \
145 { "ads", 0, \
146 N_("Link with libads.a, libc.a and crt0.o") }, \
147 { "yellowknife", 0, \
148 N_("Link with libyk.a, libc.a and crt0.o") }, \
149 { "mvme", 0, \
150 N_("Link with libmvme.a, libc.a and crt0.o") }, \
151 { "emb", 0, \
152 N_("Set the PPC_EMB bit in the ELF flags header") }, \
153 { "windiss", 0, N_("Use the WindISS simulator") }, \
154 { "shlib", 0, N_("no description yet") }, \
155 EXTRA_SUBTARGET_SWITCHES \
156 { "newlib", 0, N_("no description yet") },
157
158 /* This is meant to be redefined in the host dependent files. */
159 #define EXTRA_SUBTARGET_SWITCHES
160
161 /* Sometimes certain combinations of command options do not make sense
162 on a particular target machine. You can define a macro
163 `OVERRIDE_OPTIONS' to take account of this. This macro, if
164 defined, is executed once just after all the command options have
165 been parsed.
166
167 The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
168 get control. */
169
170 #define SUBTARGET_OVERRIDE_OPTIONS \
171 do { \
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, "aix")) \
189 { \
190 rs6000_current_abi = ABI_AIX_NODESC; \
191 target_flags |= MASK_EABI; \
192 } \
193 else if (!strcmp (rs6000_abi_name, "aixdesc")) \
194 rs6000_current_abi = ABI_AIX; \
195 else if (!strcmp (rs6000_abi_name, "freebsd")) \
196 rs6000_current_abi = ABI_V4; \
197 else if (!strcmp (rs6000_abi_name, "linux")) \
198 rs6000_current_abi = ABI_V4; \
199 else if (!strcmp (rs6000_abi_name, "gnu")) \
200 rs6000_current_abi = ABI_V4; \
201 else if (!strcmp (rs6000_abi_name, "netbsd")) \
202 rs6000_current_abi = ABI_V4; \
203 else if (!strcmp (rs6000_abi_name, "i960-old")) \
204 { \
205 rs6000_current_abi = ABI_V4; \
206 target_flags |= (MASK_LITTLE_ENDIAN | MASK_EABI \
207 | MASK_NO_BITFIELD_WORD); \
208 target_flags &= ~MASK_STRICT_ALIGN; \
209 } \
210 else \
211 { \
212 rs6000_current_abi = ABI_V4; \
213 error ("bad value for -mcall-%s", rs6000_abi_name); \
214 } \
215 \
216 if (rs6000_sdata_name) \
217 { \
218 if (!strcmp (rs6000_sdata_name, "none")) \
219 rs6000_sdata = SDATA_NONE; \
220 else if (!strcmp (rs6000_sdata_name, "data")) \
221 rs6000_sdata = SDATA_DATA; \
222 else if (!strcmp (rs6000_sdata_name, "default")) \
223 rs6000_sdata = (TARGET_EABI) ? SDATA_EABI : SDATA_SYSV; \
224 else if (!strcmp (rs6000_sdata_name, "sysv")) \
225 rs6000_sdata = SDATA_SYSV; \
226 else if (!strcmp (rs6000_sdata_name, "eabi")) \
227 rs6000_sdata = SDATA_EABI; \
228 else \
229 error ("bad value for -msdata=%s", rs6000_sdata_name); \
230 } \
231 else if (DEFAULT_ABI == ABI_V4) \
232 { \
233 rs6000_sdata = SDATA_DATA; \
234 rs6000_sdata_name = "data"; \
235 } \
236 else \
237 { \
238 rs6000_sdata = SDATA_NONE; \
239 rs6000_sdata_name = "none"; \
240 } \
241 \
242 if (TARGET_RELOCATABLE && \
243 (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV)) \
244 { \
245 rs6000_sdata = SDATA_DATA; \
246 error ("-mrelocatable and -msdata=%s are incompatible", \
247 rs6000_sdata_name); \
248 } \
249 \
250 else if (flag_pic && \
251 (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV)) \
252 { \
253 rs6000_sdata = SDATA_DATA; \
254 error ("-f%s and -msdata=%s are incompatible", \
255 (flag_pic > 1) ? "PIC" : "pic", \
256 rs6000_sdata_name); \
257 } \
258 \
259 if (rs6000_sdata != SDATA_NONE && DEFAULT_ABI != ABI_V4) \
260 { \
261 rs6000_sdata = SDATA_NONE; \
262 error ("-msdata=%s and -mcall-%s are incompatible", \
263 rs6000_sdata_name, rs6000_abi_name); \
264 } \
265 \
266 targetm.have_srodata_section = rs6000_sdata == SDATA_EABI; \
267 \
268 if (TARGET_RELOCATABLE && !TARGET_MINIMAL_TOC) \
269 { \
270 target_flags |= MASK_MINIMAL_TOC; \
271 error ("-mrelocatable and -mno-minimal-toc are incompatible"); \
272 } \
273 \
274 if (TARGET_RELOCATABLE && rs6000_current_abi == ABI_AIX) \
275 { \
276 target_flags &= ~MASK_RELOCATABLE; \
277 error ("-mrelocatable and -mcall-%s are incompatible", \
278 rs6000_abi_name); \
279 } \
280 \
281 if (flag_pic > 1 && rs6000_current_abi == ABI_AIX) \
282 { \
283 flag_pic = 0; \
284 error ("-fPIC and -mcall-%s are incompatible", \
285 rs6000_abi_name); \
286 } \
287 \
288 if (rs6000_current_abi == ABI_AIX && TARGET_LITTLE_ENDIAN) \
289 { \
290 target_flags &= ~MASK_LITTLE_ENDIAN; \
291 error ("-mcall-aixdesc must be big endian"); \
292 } \
293 \
294 /* Treat -fPIC the same as -mrelocatable. */ \
295 if (flag_pic > 1) \
296 target_flags |= MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC; \
297 \
298 else if (TARGET_RELOCATABLE) \
299 flag_pic = 2; \
300 \
301 } while (0)
302
303
304 /* Override rs6000.h definition. */
305 #undef TARGET_DEFAULT
306 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
307
308 /* Override rs6000.h definition. */
309 #undef PROCESSOR_DEFAULT
310 #define PROCESSOR_DEFAULT PROCESSOR_PPC750
311
312 #define FIXED_R2 1
313 /* System V.4 uses register 13 as a pointer to the small data area,
314 so it is not available to the normal user. */
315 #define FIXED_R13 1
316
317 /* Size of the V.4 varargs area if needed. */
318 /* Override rs6000.h definition. */
319 #undef RS6000_VARARGS_AREA
320 #define RS6000_VARARGS_AREA ((cfun->machine->sysv_varargs_p) ? RS6000_VARARGS_SIZE : 0)
321
322 /* Override default big endianism definitions in rs6000.h. */
323 #undef BYTES_BIG_ENDIAN
324 #undef WORDS_BIG_ENDIAN
325 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
326 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
327
328 /* Define this to set the endianness to use in libgcc2.c, which can
329 not depend on target_flags. */
330 #if !defined(_LITTLE_ENDIAN) && !defined(__sun__)
331 #define LIBGCC2_WORDS_BIG_ENDIAN 1
332 #else
333 #define LIBGCC2_WORDS_BIG_ENDIAN 0
334 #endif
335
336 /* Define cutoff for using external functions to save floating point.
337 Currently on V.4, always use inline stores. */
338 #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
339
340 /* Put jump tables in read-only memory, rather than in .text. */
341 #define JUMP_TABLES_IN_TEXT_SECTION 0
342
343 /* Prefix and suffix to use to saving floating point. */
344 #define SAVE_FP_PREFIX "_savefpr_"
345 #define SAVE_FP_SUFFIX "_l"
346
347 /* Prefix and suffix to use to restoring floating point. */
348 #define RESTORE_FP_PREFIX "_restfpr_"
349 #define RESTORE_FP_SUFFIX "_l"
350
351 /* Type used for ptrdiff_t, as a string used in a declaration. */
352 #define PTRDIFF_TYPE "int"
353
354 /* Type used for wchar_t, as a string used in a declaration. */
355 /* Override svr4.h definition. */
356 #undef WCHAR_TYPE
357 #define WCHAR_TYPE "long int"
358
359 /* Width of wchar_t in bits. */
360 /* Override svr4.h definition. */
361 #undef WCHAR_TYPE_SIZE
362 #define WCHAR_TYPE_SIZE 32
363
364 /* Make int foo : 8 not cause structures to be aligned to an int boundary. */
365 /* Override elfos.h definition. */
366 #undef PCC_BITFIELD_TYPE_MATTERS
367 #define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
368
369 #undef BITFIELD_NBYTES_LIMITED
370 #define BITFIELD_NBYTES_LIMITED (TARGET_NO_BITFIELD_WORD)
371
372 /* Define this macro to be the value 1 if instructions will fail to
373 work if given data not on the nominal alignment. If instructions
374 will merely go slower in that case, define this macro as 0. */
375 #undef STRICT_ALIGNMENT
376 #define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
377
378 /* Alignment in bits of the stack boundary. Note, in order to allow building
379 one set of libraries with -mno-eabi instead of eabi libraries and non-eabi
380 versions, just use 64 as the stack boundary. */
381 #undef STACK_BOUNDARY
382 #define STACK_BOUNDARY (TARGET_ALTIVEC_ABI ? 128 : 64)
383
384 /* Real stack boundary as mandated by the appropriate ABI. */
385 #define ABI_STACK_BOUNDARY ((TARGET_EABI && !TARGET_ALTIVEC_ABI) ? 64 : 128)
386
387 /* An expression for the alignment of a structure field FIELD if the
388 alignment computed in the usual way is COMPUTED. */
389 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
390 ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
391 ? 128 : COMPUTED)
392
393 /* Define this macro as an expression for the alignment of a type
394 (given by TYPE as a tree node) if the alignment computed in the
395 usual way is COMPUTED and the alignment explicitly specified was
396 SPECIFIED. */
397 #define ROUND_TYPE_ALIGN(TYPE, COMPUTED, SPECIFIED) \
398 ((TARGET_ALTIVEC && TREE_CODE (TYPE) == VECTOR_TYPE) \
399 ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \
400 : MAX (COMPUTED, SPECIFIED))
401
402 #undef BIGGEST_FIELD_ALIGNMENT
403
404 /* Use ELF style section commands. */
405
406 #define TEXT_SECTION_ASM_OP "\t.section\t\".text\""
407
408 #define DATA_SECTION_ASM_OP "\t.section\t\".data\""
409
410 #define BSS_SECTION_ASM_OP "\t.section\t\".bss\""
411
412 /* Override elfos.h definition. */
413 #undef INIT_SECTION_ASM_OP
414 #define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
415
416 /* Override elfos.h definition. */
417 #undef FINI_SECTION_ASM_OP
418 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
419
420 #define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
421
422 /* Put PC relative got entries in .got2. */
423 #define MINIMAL_TOC_SECTION_ASM_OP \
424 ((TARGET_RELOCATABLE || flag_pic) ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
425
426 #define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
427 #define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
428 #define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
429
430 /* Besides the usual ELF sections, we need a toc section. */
431 /* Override elfos.h definition. */
432 #undef EXTRA_SECTIONS
433 #define EXTRA_SECTIONS in_toc, in_sdata, in_sdata2, in_sbss, in_init, in_fini
434
435 /* Override elfos.h definition. */
436 #undef EXTRA_SECTION_FUNCTIONS
437 #define EXTRA_SECTION_FUNCTIONS \
438 TOC_SECTION_FUNCTION \
439 SDATA_SECTION_FUNCTION \
440 SDATA2_SECTION_FUNCTION \
441 SBSS_SECTION_FUNCTION \
442 INIT_SECTION_FUNCTION \
443 FINI_SECTION_FUNCTION
444
445 #define TOC_SECTION_FUNCTION \
446 void \
447 toc_section () \
448 { \
449 if (in_section != in_toc) \
450 { \
451 in_section = in_toc; \
452 if (DEFAULT_ABI == ABI_AIX \
453 && TARGET_MINIMAL_TOC \
454 && !TARGET_RELOCATABLE) \
455 { \
456 if (! toc_initialized) \
457 { \
458 toc_initialized = 1; \
459 fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
460 (*targetm.asm_out.internal_label) (asm_out_file, "LCTOC", 0); \
461 fprintf (asm_out_file, "\t.tc "); \
462 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1[TC],"); \
463 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
464 fprintf (asm_out_file, "\n"); \
465 \
466 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
467 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
468 fprintf (asm_out_file, " = .+32768\n"); \
469 } \
470 else \
471 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
472 } \
473 else if (DEFAULT_ABI == ABI_AIX && !TARGET_RELOCATABLE) \
474 fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
475 else \
476 { \
477 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
478 if (! toc_initialized) \
479 { \
480 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
481 fprintf (asm_out_file, " = .+32768\n"); \
482 toc_initialized = 1; \
483 } \
484 } \
485 } \
486 } \
487 \
488 extern int in_toc_section PARAMS ((void)); \
489 int in_toc_section () \
490 { \
491 return in_section == in_toc; \
492 }
493
494 #define SDATA_SECTION_FUNCTION \
495 void \
496 sdata_section () \
497 { \
498 if (in_section != in_sdata) \
499 { \
500 in_section = in_sdata; \
501 fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
502 } \
503 }
504
505 #define SDATA2_SECTION_FUNCTION \
506 void \
507 sdata2_section () \
508 { \
509 if (in_section != in_sdata2) \
510 { \
511 in_section = in_sdata2; \
512 fprintf (asm_out_file, "%s\n", SDATA2_SECTION_ASM_OP); \
513 } \
514 }
515
516 #define SBSS_SECTION_FUNCTION \
517 void \
518 sbss_section () \
519 { \
520 if (in_section != in_sbss) \
521 { \
522 in_section = in_sbss; \
523 fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP); \
524 } \
525 }
526
527 #define INIT_SECTION_FUNCTION \
528 void \
529 init_section () \
530 { \
531 if (in_section != in_init) \
532 { \
533 in_section = in_init; \
534 fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP); \
535 } \
536 }
537
538 #define FINI_SECTION_FUNCTION \
539 void \
540 fini_section () \
541 { \
542 if (in_section != in_fini) \
543 { \
544 in_section = in_fini; \
545 fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP); \
546 } \
547 }
548
549 /* Override default elf definitions. */
550 #undef TARGET_ASM_SELECT_RTX_SECTION
551 #define TARGET_ASM_SELECT_RTX_SECTION rs6000_elf_select_rtx_section
552 #undef TARGET_ASM_SELECT_SECTION
553 #define TARGET_ASM_SELECT_SECTION rs6000_elf_select_section
554 #define TARGET_ASM_UNIQUE_SECTION rs6000_elf_unique_section
555
556 /* Return nonzero if this entry is to be written into the constant pool
557 in a special way. We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
558 containing one of them. If -mfp-in-toc (the default), we also do
559 this for floating-point constants. We actually can only do this
560 if the FP formats of the target and host machines are the same, but
561 we can't check that since not every file that uses
562 GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
563
564 Unlike AIX, we don't key off of -mminimal-toc, but instead do not
565 allow floating point constants in the TOC if -mrelocatable. */
566
567 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
568 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
569 (TARGET_TOC \
570 && (GET_CODE (X) == SYMBOL_REF \
571 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
572 && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
573 || GET_CODE (X) == LABEL_REF \
574 || (GET_CODE (X) == CONST_INT \
575 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
576 || (!TARGET_NO_FP_IN_TOC \
577 && !TARGET_RELOCATABLE \
578 && GET_CODE (X) == CONST_DOUBLE \
579 && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
580 && BITS_PER_WORD == HOST_BITS_PER_INT)))
581
582 /* These macros generate the special .type and .size directives which
583 are used to set the corresponding fields of the linker symbol table
584 entries in an ELF object file under SVR4. These macros also output
585 the starting labels for the relevant functions/objects. */
586
587 /* Write the extra assembler code needed to declare a function properly.
588 Some svr4 assemblers need to also have something extra said about the
589 function's return value. We allow for that here. */
590
591 extern int rs6000_pic_labelno;
592
593 /* Override elfos.h definition. */
594 #undef ASM_DECLARE_FUNCTION_NAME
595 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
596 do { \
597 const char *const init_ptr = (TARGET_64BIT) ? ".quad" : ".long"; \
598 \
599 if (TARGET_RELOCATABLE \
600 && (get_pool_size () != 0 || current_function_profile) \
601 && uses_TOC()) \
602 { \
603 char buf[256]; \
604 \
605 (*targetm.asm_out.internal_label) (FILE, "LCL", rs6000_pic_labelno); \
606 \
607 ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1); \
608 fprintf (FILE, "\t%s ", init_ptr); \
609 assemble_name (FILE, buf); \
610 putc ('-', FILE); \
611 ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno); \
612 assemble_name (FILE, buf); \
613 putc ('\n', FILE); \
614 } \
615 \
616 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
617 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
618 \
619 if (DEFAULT_ABI == ABI_AIX) \
620 { \
621 const char *desc_name, *orig_name; \
622 \
623 orig_name = (*targetm.strip_name_encoding) (NAME); \
624 desc_name = orig_name; \
625 while (*desc_name == '.') \
626 desc_name++; \
627 \
628 if (TREE_PUBLIC (DECL)) \
629 fprintf (FILE, "\t.globl %s\n", desc_name); \
630 \
631 fprintf (FILE, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
632 fprintf (FILE, "%s:\n", desc_name); \
633 fprintf (FILE, "\t%s %s\n", init_ptr, orig_name); \
634 fprintf (FILE, "\t%s _GLOBAL_OFFSET_TABLE_\n", init_ptr); \
635 if (DEFAULT_ABI == ABI_AIX) \
636 fprintf (FILE, "\t%s 0\n", init_ptr); \
637 fprintf (FILE, "\t.previous\n"); \
638 } \
639 ASM_OUTPUT_LABEL (FILE, NAME); \
640 } while (0)
641
642 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
643 flag. The LOCAL_LABEL_PREFIX variable is used by dbxelf.h. */
644
645 #define LOCAL_LABEL_PREFIX "."
646 #define USER_LABEL_PREFIX ""
647
648 /* svr4.h overrides (*targetm.asm_out.internal_label). */
649
650 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \
651 asm_fprintf (FILE, "%L%s", PREFIX)
652
653 /* Globalizing directive for a label. */
654 #define GLOBAL_ASM_OP "\t.globl "
655
656 /* This says how to output assembler code to declare an
657 uninitialized internal linkage data object. Under SVR4,
658 the linker seems to want the alignment of data objects
659 to depend on their types. We do exactly that here. */
660
661 #define LOCAL_ASM_OP "\t.local\t"
662
663 #define LCOMM_ASM_OP "\t.lcomm\t"
664
665 /* Override elfos.h definition. */
666 #undef ASM_OUTPUT_ALIGNED_LOCAL
667 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
668 do { \
669 if (rs6000_sdata != SDATA_NONE && (SIZE) > 0 \
670 && (SIZE) <= g_switch_value) \
671 { \
672 sbss_section (); \
673 ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT)); \
674 ASM_OUTPUT_LABEL (FILE, NAME); \
675 ASM_OUTPUT_SKIP (FILE, SIZE); \
676 if (!flag_inhibit_size_directive && (SIZE) > 0) \
677 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
678 } \
679 else \
680 { \
681 fprintf (FILE, "%s", LCOMM_ASM_OP); \
682 assemble_name ((FILE), (NAME)); \
683 fprintf ((FILE), ",%u,%u\n", (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 (*targetm.asm_out.globalize_label) (FILE, NAME); \
692 ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \
693 } while (0)
694
695 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
696 /* To support -falign-* switches we need to use .p2align so
697 that alignment directives in code sections will be padded
698 with no-op instructions, rather than zeroes. */
699 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
700 if ((LOG) != 0) \
701 { \
702 if ((MAX_SKIP) == 0) \
703 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
704 else \
705 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
706 }
707 #endif
708
709 /* This is how to output code to push a register on the stack.
710 It need not be very fast code.
711
712 On the rs6000, we must keep the backchain up to date. In order
713 to simplify things, always allocate 16 bytes for a push (System V
714 wants to keep stack aligned to a 16 byte boundary). */
715
716 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \
717 do { \
718 if (DEFAULT_ABI == ABI_V4) \
719 asm_fprintf (FILE, \
720 "\t{stu|stwu} %s,-16(%s)\n\t{st|stw} %s,12(%s)\n", \
721 reg_names[1], reg_names[1], reg_names[REGNO], \
722 reg_names[1]); \
723 } while (0)
724
725 /* This is how to output an insn to pop a register from the stack.
726 It need not be very fast code. */
727
728 #define ASM_OUTPUT_REG_POP(FILE, REGNO) \
729 do { \
730 if (DEFAULT_ABI == ABI_V4) \
731 asm_fprintf (FILE, \
732 "\t{l|lwz} %s,12(%s)\n\t{ai|addic} %s,%s,16\n", \
733 reg_names[REGNO], reg_names[1], reg_names[1], \
734 reg_names[1]); \
735 } while (0)
736
737 /* Switch Recognition by gcc.c. Add -G xx support. */
738
739 /* Override svr4.h definition. */
740 #undef SWITCH_TAKES_ARG
741 #define SWITCH_TAKES_ARG(CHAR) \
742 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
743 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
744 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
745 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
746 || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
747
748 /* Output .file. */
749 /* Override elfos.h definition. */
750 #undef ASM_FILE_START
751 #define ASM_FILE_START(FILE) \
752 do { \
753 output_file_directive ((FILE), main_input_filename); \
754 rs6000_file_start (FILE, TARGET_CPU_DEFAULT); \
755 } while (0)
756
757
758 extern int fixuplabelno;
759
760 /* Handle constructors specially for -mrelocatable. */
761 #define TARGET_ASM_CONSTRUCTOR rs6000_elf_asm_out_constructor
762 #define TARGET_ASM_DESTRUCTOR rs6000_elf_asm_out_destructor
763
764 /* This is the end of what might become sysv4.h. */
765
766 /* Use DWARF 2 debugging information by default. */
767 #undef PREFERRED_DEBUGGING_TYPE
768 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
769
770 /* Historically we have also supported stabs debugging. */
771 #define DBX_DEBUGGING_INFO 1
772
773 #define TARGET_ENCODE_SECTION_INFO rs6000_elf_encode_section_info
774 #define TARGET_STRIP_NAME_ENCODING rs6000_elf_strip_name_encoding
775 #define TARGET_IN_SMALL_DATA_P rs6000_elf_in_small_data_p
776 #define TARGET_SECTION_TYPE_FLAGS rs6000_elf_section_type_flags
777
778 /* The ELF version doesn't encode [DS] or whatever at the end of symbols. */
779
780 #define RS6000_OUTPUT_BASENAME(FILE, NAME) \
781 assemble_name (FILE, NAME)
782
783 /* This is how to output a reference to a user-level label named NAME.
784 `assemble_name' uses this. */
785
786 /* Override elfos.h definition. */
787 #undef ASM_OUTPUT_LABELREF
788 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
789 do { \
790 const char *_name = NAME; \
791 if (*_name == '@') \
792 _name++; \
793 \
794 if (*_name == '*') \
795 fprintf (FILE, "%s", _name + 1); \
796 else \
797 asm_fprintf (FILE, "%U%s", _name); \
798 } while (0)
799
800 /* But, to make this work, we have to output the stabs for the function
801 name *first*... */
802
803 #define DBX_FUNCTION_FIRST
804
805 /* This is the end of what might become sysv4dbx.h. */
806
807 #ifndef TARGET_VERSION
808 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
809 #endif
810 \f
811 #ifndef TARGET_OS_CPP_BUILTINS
812 #define TARGET_OS_CPP_BUILTINS() \
813 do \
814 { \
815 builtin_define_std ("PPC"); \
816 builtin_define_std ("unix"); \
817 builtin_define ("__svr4__"); \
818 builtin_assert ("system=unix"); \
819 builtin_assert ("system=svr4"); \
820 builtin_assert ("cpu=powerpc"); \
821 builtin_assert ("machine=powerpc"); \
822 } \
823 while (0)
824 #endif
825
826 /* Pass various options to the assembler. */
827 /* Override svr4.h definition. */
828 #undef ASM_SPEC
829 #define ASM_SPEC "%(asm_cpu) \
830 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
831 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
832 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
833 %{memb|msdata|msdata=eabi: -memb} \
834 %{mlittle|mlittle-endian:-mlittle; \
835 mbig|mbig-endian :-mbig; \
836 mcall-aixdesc | \
837 mcall-freebsd | \
838 mcall-netbsd | \
839 mcall-linux | \
840 mcall-gnu :-mbig; \
841 mcall-i960-old :-mlittle}"
842
843 #define CC1_ENDIAN_BIG_SPEC ""
844
845 #define CC1_ENDIAN_LITTLE_SPEC "\
846 %{!mstrict-align: %{!mno-strict-align: \
847 %{!mcall-i960-old: \
848 -mstrict-align \
849 } \
850 }}"
851
852 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big)"
853
854 /* Pass -G xxx to the compiler and set correct endian mode. */
855 #define CC1_SPEC "%{G*} \
856 %{mlittle|mlittle-endian: %(cc1_endian_little); \
857 mbig |mbig-endian : %(cc1_endian_big); \
858 mcall-aixdesc | \
859 mcall-freebsd | \
860 mcall-netbsd | \
861 mcall-linux | \
862 mcall-gnu : -mbig %(cc1_endian_big); \
863 mcall-i960-old : -mlittle %(cc1_endian_little); \
864 : %(cc1_endian_default)} \
865 %{mno-sdata: -msdata=none } \
866 %{meabi: %{!mcall-*: -mcall-sysv }} \
867 %{!meabi: %{!mno-eabi: \
868 %{mrelocatable: -meabi } \
869 %{mcall-freebsd: -mno-eabi } \
870 %{mcall-i960-old: -meabi } \
871 %{mcall-linux: -mno-eabi } \
872 %{mcall-gnu: -mno-eabi } \
873 %{mcall-netbsd: -mno-eabi }}} \
874 %{msdata: -msdata=default} \
875 %{mno-sdata: -msdata=none} \
876 %{profile: -p}"
877
878 /* Don't put -Y P,<path> for cross compilers. */
879 #ifndef CROSS_COMPILE
880 #define LINK_PATH_SPEC "\
881 %{!R*:%{L*:-R %*}} \
882 %{!nostdlib: %{!YP,*: \
883 %{compat-bsd: \
884 %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
885 %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
886 %{!R*: %{!L*: -R /usr/ucblib}} \
887 %{!compat-bsd: \
888 %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
889 %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
890
891 #else
892 #define LINK_PATH_SPEC ""
893 #endif
894
895 /* Default starting address if specified. */
896 #define LINK_START_SPEC "\
897 %{mads : %(link_start_ads) ; \
898 myellowknife : %(link_start_yellowknife) ; \
899 mmvme : %(link_start_mvme) ; \
900 msim : %(link_start_sim) ; \
901 mwindiss : %(link_start_windiss) ; \
902 mcall-freebsd: %(link_start_freebsd) ; \
903 mcall-linux : %(link_start_linux) ; \
904 mcall-gnu : %(link_start_gnu) ; \
905 mcall-netbsd : %(link_start_netbsd) ; \
906 : %(link_start_default) }"
907
908 #define LINK_START_DEFAULT_SPEC ""
909
910 /* Override svr4.h definition. */
911 #undef LINK_SPEC
912 #define LINK_SPEC "\
913 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
914 %{YP,*} %{R*} \
915 %{Qy:} %{!Qn:-Qy} \
916 %(link_shlib) \
917 %{!Wl,-T*: %{!T*: %(link_start) }} \
918 %(link_target) \
919 %(link_os)"
920
921 /* For now, turn off shared libraries by default. */
922 #ifndef SHARED_LIB_SUPPORT
923 #define NO_SHARED_LIB_SUPPORT
924 #endif
925
926 #ifndef NO_SHARED_LIB_SUPPORT
927 /* Shared libraries are default. */
928 #define LINK_SHLIB_SPEC "\
929 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
930 %{mshlib: } \
931 %{static:-dn -Bstatic} \
932 %{shared:-G -dy -z text} \
933 %{symbolic:-Bsymbolic -G -dy -z text}"
934
935 #else
936 /* Shared libraries are not default. */
937 #define LINK_SHLIB_SPEC "\
938 %{mshlib: %(link_path) } \
939 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
940 %{static: } \
941 %{shared:-G -dy -z text %(link_path) } \
942 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
943 #endif
944
945 /* Override the default target of the linker. */
946 #define LINK_TARGET_SPEC "\
947 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
948 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
949 %{mcall-i960-old: --oformat elf32-powerpcle} \
950 }}}}"
951
952 /* Any specific OS flags. */
953 #define LINK_OS_SPEC "\
954 %{mads : %(link_os_ads) ; \
955 myellowknife : %(link_os_yellowknife) ; \
956 mmvme : %(link_os_mvme) ; \
957 msim : %(link_os_sim) ; \
958 mwindiss : %(link_os_windiss) ; \
959 mcall-freebsd: %(link_os_freebsd) ; \
960 mcall-linux : %(link_os_linux) ; \
961 mcall-gnu : %(link_os_gnu) ; \
962 mcall-netbsd : %(link_os_netbsd) ; \
963 : %(link_os_default) }"
964
965 #define LINK_OS_DEFAULT_SPEC ""
966
967 #define CPP_SYSV_SPEC \
968 "%{mrelocatable*: -D_RELOCATABLE} \
969 %{fpic: -D__PIC__=1 -D__pic__=1} \
970 %{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}}"
971
972 /* Override rs6000.h definition. */
973 #undef CPP_SPEC
974 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) \
975 %{mads : %(cpp_os_ads) ; \
976 myellowknife : %(cpp_os_yellowknife) ; \
977 mmvme : %(cpp_os_mvme) ; \
978 msim : %(cpp_os_sim) ; \
979 mwindiss : %(cpp_os_windiss) ; \
980 mcall-freebsd: %(cpp_os_freebsd) ; \
981 mcall-linux : %(cpp_os_linux) ; \
982 mcall-gnu : %(cpp_os_gnu) ; \
983 mcall-netbsd : %(cpp_os_netbsd) ; \
984 : %(cpp_os_default) }"
985
986 #define CPP_OS_DEFAULT_SPEC ""
987
988 /* Override svr4.h definition. */
989 #undef STARTFILE_SPEC
990 #define STARTFILE_SPEC "\
991 %{mads : %(startfile_ads) ; \
992 myellowknife : %(startfile_yellowknife) ; \
993 mmvme : %(startfile_mvme) ; \
994 msim : %(startfile_sim) ; \
995 mwindiss : %(startfile_windiss) ; \
996 mcall-freebsd: %(startfile_freebsd) ; \
997 mcall-linux : %(startfile_linux) ; \
998 mcall-gnu : %(startfile_gnu) ; \
999 mcall-netbsd : %(startfile_netbsd) ; \
1000 : %(startfile_default) }"
1001
1002 #define STARTFILE_DEFAULT_SPEC ""
1003
1004 /* Override svr4.h definition. */
1005 #undef LIB_SPEC
1006 #define LIB_SPEC "\
1007 %{mads : %(lib_ads) ; \
1008 myellowknife : %(lib_yellowknife) ; \
1009 mmvme : %(lib_mvme) ; \
1010 msim : %(lib_sim) ; \
1011 mwindiss : %(lib_windiss) ; \
1012 mcall-freebsd: %(lib_freebsd) ; \
1013 mcall-linux : %(lib_linux) ; \
1014 mcall-gnu : %(lib_gnu) ; \
1015 mcall-netbsd : %(lib_netbsd) ; \
1016 : %(lib_default) }"
1017
1018 #define LIB_DEFAULT_SPEC ""
1019
1020 /* Override svr4.h definition. */
1021 #undef ENDFILE_SPEC
1022 #define ENDFILE_SPEC "\
1023 %{mads : crtsavres.o%s %(endfile_ads) ; \
1024 myellowknife : crtsavres.o%s %(endfile_yellowknife) ; \
1025 mmvme : crtsavres.o%s %(endfile_mvme) ; \
1026 msim : crtsavres.o%s %(endfile_sim) ; \
1027 mwindiss : %(endfile_windiss) ; \
1028 mcall-freebsd: crtsavres.o%s %(endfile_freebsd) ; \
1029 mcall-linux : crtsavres.o%s %(endfile_linux) ; \
1030 mcall-gnu : crtsavres.o%s %(endfile_gnu) ; \
1031 mcall-netbsd : crtsavres.o%s %(endfile_netbsd) ; \
1032 : %(crtsavres_default) %(endfile_default) }"
1033
1034 #define CRTSAVRES_DEFAULT_SPEC "crtsavres.o%s"
1035
1036 #define ENDFILE_DEFAULT_SPEC ""
1037
1038 /* Motorola ADS support. */
1039 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
1040
1041 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1042
1043 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
1044
1045 #define LINK_START_ADS_SPEC "-T ads.ld%s"
1046
1047 #define LINK_OS_ADS_SPEC ""
1048
1049 #define CPP_OS_ADS_SPEC ""
1050
1051 /* Motorola Yellowknife support. */
1052 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
1053
1054 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1055
1056 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
1057
1058 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
1059
1060 #define LINK_OS_YELLOWKNIFE_SPEC ""
1061
1062 #define CPP_OS_YELLOWKNIFE_SPEC ""
1063
1064 /* Motorola MVME support. */
1065 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
1066
1067 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1068
1069 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
1070
1071 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
1072
1073 #define LINK_OS_MVME_SPEC ""
1074
1075 #define CPP_OS_MVME_SPEC ""
1076
1077 /* PowerPC simulator based on netbsd system calls support. */
1078 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
1079
1080 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
1081
1082 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
1083
1084 #define LINK_START_SIM_SPEC ""
1085
1086 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
1087
1088 #define CPP_OS_SIM_SPEC ""
1089
1090 /* FreeBSD support. */
1091
1092 #define CPP_OS_FREEBSD_SPEC "\
1093 -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
1094 -Acpu=powerpc -Amachine=powerpc"
1095
1096 #define STARTFILE_FREEBSD_SPEC FBSD_STARTFILE_SPEC
1097 #define ENDFILE_FREEBSD_SPEC FBSD_ENDFILE_SPEC
1098 #define LIB_FREEBSD_SPEC FBSD_LIB_SPEC
1099 #define LINK_START_FREEBSD_SPEC ""
1100
1101 #define LINK_OS_FREEBSD_SPEC "\
1102 %{symbolic:-Bsymbolic}"
1103
1104 /* GNU/Linux support. */
1105 #ifdef USE_GNULIBC_1
1106 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1107 %{!mnewlib: -lc }"
1108 #else
1109 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1110 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1111 %{profile:-lc_p} %{!profile:-lc}}}"
1112 #endif
1113
1114 #ifdef USE_GNULIBC_1
1115 #define STARTFILE_LINUX_SPEC "\
1116 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1117 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1118 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1119 #else
1120 #define STARTFILE_LINUX_SPEC "\
1121 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1122 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1123 %{static:crtbeginT.o%s} \
1124 %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
1125 #endif
1126
1127 #define ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1128 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1129
1130 #define LINK_START_LINUX_SPEC ""
1131
1132 #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1133 %{rdynamic:-export-dynamic} \
1134 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1135
1136 #if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR)
1137 # define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
1138 #endif
1139
1140 #ifdef USE_GNULIBC_1
1141 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1142 %{!undef: \
1143 %{!ansi: \
1144 %{!std=*:-Dunix -D__unix -Dlinux -D__linux} \
1145 %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}} \
1146 -Asystem=unix -Asystem=posix"
1147 #else
1148 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1149 %{!undef: \
1150 %{!ansi: \
1151 %{!std=*:-Dunix -D__unix -Dlinux -D__linux} \
1152 %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}} \
1153 -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1154 #endif
1155
1156 /* GNU/Hurd support. */
1157 #define LIB_GNU_SPEC "%{mnewlib: --start-group -lgnu -lc --end-group } \
1158 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1159 %{profile:-lc_p} %{!profile:-lc}}}"
1160
1161 #define STARTFILE_GNU_SPEC "\
1162 %{!shared: %{!static: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}} \
1163 %{static: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
1164 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1165 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1166
1167 #define ENDFILE_GNU_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1168 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1169
1170 #define LINK_START_GNU_SPEC ""
1171
1172 #define LINK_OS_GNU_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1173 %{rdynamic:-export-dynamic} \
1174 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1175
1176 #define CPP_OS_GNU_SPEC "-D__unix__ -D__gnu_hurd__ -D__GNU__ \
1177 %{!undef: \
1178 %{!ansi: -Dunix -D__unix}} \
1179 -Asystem=gnu -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1180
1181 /* NetBSD support. */
1182 #define LIB_NETBSD_SPEC "\
1183 %{profile:-lgmon -lc_p} %{!profile:-lc}"
1184
1185 #define STARTFILE_NETBSD_SPEC "\
1186 ncrti.o%s crt0.o%s \
1187 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1188
1189 #define ENDFILE_NETBSD_SPEC "\
1190 %{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1191 ncrtn.o%s"
1192
1193 #define LINK_START_NETBSD_SPEC "\
1194 "
1195
1196 #define LINK_OS_NETBSD_SPEC "\
1197 %{!shared: %{!static: \
1198 %{rdynamic:-export-dynamic} \
1199 %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
1200
1201 #define CPP_OS_NETBSD_SPEC "\
1202 -D__powerpc__ -D__NetBSD__ -D__ELF__ -D__KPRINTF_ATTRIBUTE__"
1203
1204 /* WindISS support. */
1205
1206 #define LIB_WINDISS_SPEC "--start-group -li -lcfp -lwindiss -lram -limpl -limpfp --end-group"
1207
1208 #define CPP_OS_WINDISS_SPEC "\
1209 -D__rtasim \
1210 -D__EABI__ \
1211 -D__ppc \
1212 %{!msoft-float: -D__hardfp} \
1213 "
1214
1215 #define STARTFILE_WINDISS_SPEC "crt0.o%s crtbegin.o%s"
1216
1217 #define ENDFILE_WINDISS_SPEC "crtend.o%s"
1218
1219 #define LINK_START_WINDISS_SPEC ""
1220
1221 #define LINK_OS_WINDISS_SPEC ""
1222
1223 /* Define any extra SPECS that the compiler needs to generate. */
1224 /* Override rs6000.h definition. */
1225 #undef SUBTARGET_EXTRA_SPECS
1226 #define SUBTARGET_EXTRA_SPECS \
1227 { "cpp_sysv", CPP_SYSV_SPEC }, \
1228 { "crtsavres_default", CRTSAVRES_DEFAULT_SPEC }, \
1229 { "lib_ads", LIB_ADS_SPEC }, \
1230 { "lib_yellowknife", LIB_YELLOWKNIFE_SPEC }, \
1231 { "lib_mvme", LIB_MVME_SPEC }, \
1232 { "lib_sim", LIB_SIM_SPEC }, \
1233 { "lib_freebsd", LIB_FREEBSD_SPEC }, \
1234 { "lib_gnu", LIB_GNU_SPEC }, \
1235 { "lib_linux", LIB_LINUX_SPEC }, \
1236 { "lib_netbsd", LIB_NETBSD_SPEC }, \
1237 { "lib_windiss", LIB_WINDISS_SPEC }, \
1238 { "lib_default", LIB_DEFAULT_SPEC }, \
1239 { "startfile_ads", STARTFILE_ADS_SPEC }, \
1240 { "startfile_yellowknife", STARTFILE_YELLOWKNIFE_SPEC }, \
1241 { "startfile_mvme", STARTFILE_MVME_SPEC }, \
1242 { "startfile_sim", STARTFILE_SIM_SPEC }, \
1243 { "startfile_freebsd", STARTFILE_FREEBSD_SPEC }, \
1244 { "startfile_gnu", STARTFILE_GNU_SPEC }, \
1245 { "startfile_linux", STARTFILE_LINUX_SPEC }, \
1246 { "startfile_netbsd", STARTFILE_NETBSD_SPEC }, \
1247 { "startfile_windiss", STARTFILE_WINDISS_SPEC }, \
1248 { "startfile_default", STARTFILE_DEFAULT_SPEC }, \
1249 { "endfile_ads", ENDFILE_ADS_SPEC }, \
1250 { "endfile_yellowknife", ENDFILE_YELLOWKNIFE_SPEC }, \
1251 { "endfile_mvme", ENDFILE_MVME_SPEC }, \
1252 { "endfile_sim", ENDFILE_SIM_SPEC }, \
1253 { "endfile_freebsd", ENDFILE_FREEBSD_SPEC }, \
1254 { "endfile_gnu", ENDFILE_GNU_SPEC }, \
1255 { "endfile_linux", ENDFILE_LINUX_SPEC }, \
1256 { "endfile_netbsd", ENDFILE_NETBSD_SPEC }, \
1257 { "endfile_windiss", ENDFILE_WINDISS_SPEC }, \
1258 { "endfile_default", ENDFILE_DEFAULT_SPEC }, \
1259 { "link_path", LINK_PATH_SPEC }, \
1260 { "link_shlib", LINK_SHLIB_SPEC }, \
1261 { "link_target", LINK_TARGET_SPEC }, \
1262 { "link_start", LINK_START_SPEC }, \
1263 { "link_start_ads", LINK_START_ADS_SPEC }, \
1264 { "link_start_yellowknife", LINK_START_YELLOWKNIFE_SPEC }, \
1265 { "link_start_mvme", LINK_START_MVME_SPEC }, \
1266 { "link_start_sim", LINK_START_SIM_SPEC }, \
1267 { "link_start_freebsd", LINK_START_FREEBSD_SPEC }, \
1268 { "link_start_gnu", LINK_START_GNU_SPEC }, \
1269 { "link_start_linux", LINK_START_LINUX_SPEC }, \
1270 { "link_start_netbsd", LINK_START_NETBSD_SPEC }, \
1271 { "link_start_windiss", LINK_START_WINDISS_SPEC }, \
1272 { "link_start_default", LINK_START_DEFAULT_SPEC }, \
1273 { "link_os", LINK_OS_SPEC }, \
1274 { "link_os_ads", LINK_OS_ADS_SPEC }, \
1275 { "link_os_yellowknife", LINK_OS_YELLOWKNIFE_SPEC }, \
1276 { "link_os_mvme", LINK_OS_MVME_SPEC }, \
1277 { "link_os_sim", LINK_OS_SIM_SPEC }, \
1278 { "link_os_freebsd", LINK_OS_FREEBSD_SPEC }, \
1279 { "link_os_linux", LINK_OS_LINUX_SPEC }, \
1280 { "link_os_gnu", LINK_OS_GNU_SPEC }, \
1281 { "link_os_netbsd", LINK_OS_NETBSD_SPEC }, \
1282 { "link_os_windiss", LINK_OS_WINDISS_SPEC }, \
1283 { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
1284 { "cc1_endian_big", CC1_ENDIAN_BIG_SPEC }, \
1285 { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
1286 { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
1287 { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
1288 { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
1289 { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
1290 { "cpp_os_sim", CPP_OS_SIM_SPEC }, \
1291 { "cpp_os_freebsd", CPP_OS_FREEBSD_SPEC }, \
1292 { "cpp_os_gnu", CPP_OS_GNU_SPEC }, \
1293 { "cpp_os_linux", CPP_OS_LINUX_SPEC }, \
1294 { "cpp_os_netbsd", CPP_OS_NETBSD_SPEC }, \
1295 { "cpp_os_windiss", CPP_OS_WINDISS_SPEC }, \
1296 { "cpp_os_default", CPP_OS_DEFAULT_SPEC },
1297
1298 /* Define this macro as a C expression for the initializer of an
1299 array of string to tell the driver program which options are
1300 defaults for this target and thus do not need to be handled
1301 specially when using `MULTILIB_OPTIONS'.
1302
1303 Do not define this macro if `MULTILIB_OPTIONS' is not defined in
1304 the target makefile fragment or if none of the options listed in
1305 `MULTILIB_OPTIONS' are set by default. *Note Target Fragment::. */
1306
1307 #define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
1308
1309 /* Define this macro if the code for function profiling should come
1310 before the function prologue. Normally, the profiling code comes
1311 after. */
1312 #define PROFILE_BEFORE_PROLOGUE 1
1313
1314 /* Function name to call to do profiling. */
1315 #define RS6000_MCOUNT "_mcount"
1316
1317 /* Define this macro (to a value of 1) if you want to support the
1318 Win32 style pragmas #pragma pack(push,<n>)' and #pragma
1319 pack(pop)'. The pack(push,<n>) pragma specifies the maximum
1320 alignment (in bytes) of fields within a structure, in much the
1321 same way as the __aligned__' and __packed__' __attribute__'s
1322 do. A pack value of zero resets the behavior to the default.
1323 Successive invocations of this pragma cause the previous values to
1324 be stacked, so that invocations of #pragma pack(pop)' will return
1325 to the previous value. */
1326
1327 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
1328
1329 /* Define library calls for quad FP operations. These are all part of the
1330 PowerPC 32bit ABI. */
1331 #define ADDTF3_LIBCALL "_q_add"
1332 #define DIVTF3_LIBCALL "_q_div"
1333 #define EXTENDDFTF2_LIBCALL "_q_dtoq"
1334 #define EQTF2_LIBCALL "_q_feq"
1335 #define GETF2_LIBCALL "_q_fge"
1336 #define GTTF2_LIBCALL "_q_fgt"
1337 #define LETF2_LIBCALL "_q_fle"
1338 #define LTTF2_LIBCALL "_q_flt"
1339 #define NETF2_LIBCALL "_q_fne"
1340 #define FLOATSITF2_LIBCALL "_q_itoq"
1341 #define MULTF3_LIBCALL "_q_mul"
1342 #define NEGTF2_LIBCALL "_q_neg"
1343 #define TRUNCTFDF2_LIBCALL "_q_qtod"
1344 #define FIX_TRUNCTFSI2_LIBCALL "_q_qtoi"
1345 #define TRUNCTFSF2_LIBCALL "_q_qtos"
1346 #define FIXUNS_TRUNCTFSI2_LIBCALL "_q_qtou"
1347 #define SQRTTF_LIBCALL "_q_sqrt"
1348 #define EXTENDSFTF2_LIBCALL "_q_stoq"
1349 #define SUBTF3_LIBCALL "_q_sub"
1350 #define FLOATUNSSITF2_LIBCALL "_q_utoq"
1351
1352 #define INIT_TARGET_OPTABS \
1353 do { \
1354 if (TARGET_HARD_FLOAT) \
1355 { \
1356 add_optab->handlers[(int) TFmode].libfunc \
1357 = init_one_libfunc (ADDTF3_LIBCALL); \
1358 sub_optab->handlers[(int) TFmode].libfunc \
1359 = init_one_libfunc (SUBTF3_LIBCALL); \
1360 neg_optab->handlers[(int) TFmode].libfunc \
1361 = init_one_libfunc (NEGTF2_LIBCALL); \
1362 smul_optab->handlers[(int) TFmode].libfunc \
1363 = init_one_libfunc (MULTF3_LIBCALL); \
1364 sdiv_optab->handlers[(int) TFmode].libfunc \
1365 = init_one_libfunc (DIVTF3_LIBCALL); \
1366 eqtf2_libfunc = init_one_libfunc (EQTF2_LIBCALL); \
1367 netf2_libfunc = init_one_libfunc (NETF2_LIBCALL); \
1368 gttf2_libfunc = init_one_libfunc (GTTF2_LIBCALL); \
1369 getf2_libfunc = init_one_libfunc (GETF2_LIBCALL); \
1370 lttf2_libfunc = init_one_libfunc (LTTF2_LIBCALL); \
1371 letf2_libfunc = init_one_libfunc (LETF2_LIBCALL); \
1372 trunctfsf2_libfunc = init_one_libfunc (TRUNCTFSF2_LIBCALL); \
1373 trunctfdf2_libfunc = init_one_libfunc (TRUNCTFDF2_LIBCALL); \
1374 extendsftf2_libfunc = init_one_libfunc (EXTENDSFTF2_LIBCALL); \
1375 extenddftf2_libfunc = init_one_libfunc (EXTENDDFTF2_LIBCALL); \
1376 floatsitf_libfunc = init_one_libfunc (FLOATSITF2_LIBCALL); \
1377 fixtfsi_libfunc = init_one_libfunc (FIX_TRUNCTFSI2_LIBCALL); \
1378 fixunstfsi_libfunc \
1379 = init_one_libfunc (FIXUNS_TRUNCTFSI2_LIBCALL); \
1380 if (TARGET_PPC_GPOPT || TARGET_POWER2) \
1381 sqrt_optab->handlers[(int) TFmode].libfunc \
1382 = init_one_libfunc (SQRTTF_LIBCALL); \
1383 } \
1384 } while (0)
1385
1386 /* Select a format to encode pointers in exception handling data. CODE
1387 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
1388 true if the symbol may be affected by dynamic relocations. */
1389 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
1390 ((flag_pic || TARGET_RELOCATABLE) \
1391 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1392 : DW_EH_PE_absptr)
1393
1394 #define TARGET_ASM_EXCEPTION_SECTION readonly_data_section
1395
1396 #define DOUBLE_INT_ASM_OP "\t.quad\t"
1397
1398 /* Generate entries in .fixup for relocatable addresses. */
1399 #define RELOCATABLE_NEEDS_FIXUP
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