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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
83 /* Override rs6000.h definition. */
84 #undef SUBTARGET_OPTIONS
85 #define SUBTARGET_OPTIONS \
86 { "call-", &rs6000_abi_name, N_("Select ABI calling convention") }, \
87 { "sdata=", &rs6000_sdata_name, N_("Select method for sdata handling") }
88
89 /* Max # of bytes for variables to automatically be put into the .sdata
90 or .sdata2 sections. */
91 extern int g_switch_value; /* Value of the -G xx switch. */
92 extern int g_switch_set; /* Whether -G xx was passed. */
93
94 #define SDATA_DEFAULT_SIZE 8
95
96 /* Note, V.4 no longer uses a normal TOC, so make -mfull-toc, be just
97 the same as -mminimal-toc. */
98 /* Override rs6000.h definition. */
99 #undef SUBTARGET_SWITCHES
100 #define SUBTARGET_SWITCHES \
101 { "bit-align", -MASK_NO_BITFIELD_TYPE, \
102 N_("Align to the base type of the bit-field") }, \
103 { "no-bit-align", MASK_NO_BITFIELD_TYPE, \
104 N_("Don't align to the base type of the bit-field") }, \
105 { "strict-align", MASK_STRICT_ALIGN, \
106 N_("Don't assume that unaligned accesses are handled by the system") }, \
107 { "no-strict-align", -MASK_STRICT_ALIGN, \
108 N_("Assume that unaligned accesses are handled by the system") }, \
109 { "relocatable", MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
110 N_("Produce code relocatable at runtime") }, \
111 { "no-relocatable", -MASK_RELOCATABLE, \
112 N_("Don't produce code relocatable at runtime") }, \
113 { "relocatable-lib", MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
114 N_("Produce code relocatable at runtime") }, \
115 { "no-relocatable-lib", -MASK_RELOCATABLE, \
116 N_("Don't produce code relocatable at runtime") }, \
117 { "little-endian", MASK_LITTLE_ENDIAN, \
118 N_("Produce little endian code") }, \
119 { "little", MASK_LITTLE_ENDIAN, \
120 N_("Produce little endian code") }, \
121 { "big-endian", -MASK_LITTLE_ENDIAN, \
122 N_("Produce big endian code") }, \
123 { "big", -MASK_LITTLE_ENDIAN, \
124 N_("Produce big endian code") }, \
125 { "no-toc", 0, N_("no description yet") }, \
126 { "toc", MASK_MINIMAL_TOC, N_("no description yet") }, \
127 { "full-toc", MASK_MINIMAL_TOC, N_("no description yet") }, \
128 { "prototype", MASK_PROTOTYPE, N_("no description yet") }, \
129 { "no-prototype", -MASK_PROTOTYPE, N_("no description yet") }, \
130 { "no-traceback", 0, N_("no description yet") }, \
131 { "eabi", MASK_EABI, N_("Use EABI") }, \
132 { "no-eabi", -MASK_EABI, N_("Don't use EABI") }, \
133 { "bit-word", -MASK_NO_BITFIELD_WORD, "" }, \
134 { "no-bit-word", MASK_NO_BITFIELD_WORD, \
135 N_("Do not allow bit-fields to cross word boundaries") }, \
136 { "regnames", MASK_REGNAMES, \
137 N_("Use alternate register names") }, \
138 { "no-regnames", -MASK_REGNAMES, \
139 N_("Don't use alternate register names") }, \
140 { "sdata", 0, N_("no description yet") }, \
141 { "no-sdata", 0, N_("no description yet") }, \
142 { "sim", 0, \
143 N_("Link with libsim.a, libc.a and sim-crt0.o") }, \
144 { "ads", 0, \
145 N_("Link with libads.a, libc.a and crt0.o") }, \
146 { "yellowknife", 0, \
147 N_("Link with libyk.a, libc.a and crt0.o") }, \
148 { "mvme", 0, \
149 N_("Link with libmvme.a, libc.a and crt0.o") }, \
150 { "emb", 0, \
151 N_("Set the PPC_EMB bit in the ELF flags header") }, \
152 { "windiss", 0, N_("Use the WindISS simulator") }, \
153 { "shlib", 0, N_("no description yet") }, \
154 EXTRA_SUBTARGET_SWITCHES \
155 { "newlib", 0, N_("no description yet") },
156
157 /* This is meant to be redefined in the host dependent files. */
158 #define EXTRA_SUBTARGET_SWITCHES
159
160 /* Sometimes certain combinations of command options do not make sense
161 on a particular target machine. You can define a macro
162 `OVERRIDE_OPTIONS' to take account of this. This macro, if
163 defined, is executed once just after all the command options have
164 been parsed.
165
166 The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
167 get control. */
168
169 #define SUBTARGET_OVERRIDE_OPTIONS \
170 do { \
171 if (!g_switch_set) \
172 g_switch_value = SDATA_DEFAULT_SIZE; \
173 \
174 if (!strcmp (rs6000_abi_name, "sysv")) \
175 rs6000_current_abi = ABI_V4; \
176 else if (!strcmp (rs6000_abi_name, "sysv-noeabi")) \
177 { \
178 rs6000_current_abi = ABI_V4; \
179 target_flags &= ~ MASK_EABI; \
180 } \
181 else if (!strcmp (rs6000_abi_name, "sysv-eabi") \
182 || !strcmp (rs6000_abi_name, "eabi")) \
183 { \
184 rs6000_current_abi = ABI_V4; \
185 target_flags |= MASK_EABI; \
186 } \
187 else if (!strcmp (rs6000_abi_name, "aixdesc")) \
188 rs6000_current_abi = ABI_AIX; \
189 else if (!strcmp (rs6000_abi_name, "freebsd")) \
190 rs6000_current_abi = ABI_V4; \
191 else if (!strcmp (rs6000_abi_name, "linux")) \
192 rs6000_current_abi = ABI_V4; \
193 else if (!strcmp (rs6000_abi_name, "gnu")) \
194 rs6000_current_abi = ABI_V4; \
195 else if (!strcmp (rs6000_abi_name, "netbsd")) \
196 rs6000_current_abi = ABI_V4; \
197 else if (!strcmp (rs6000_abi_name, "i960-old")) \
198 { \
199 rs6000_current_abi = ABI_V4; \
200 target_flags |= (MASK_LITTLE_ENDIAN | MASK_EABI \
201 | MASK_NO_BITFIELD_WORD); \
202 target_flags &= ~MASK_STRICT_ALIGN; \
203 } \
204 else \
205 { \
206 rs6000_current_abi = ABI_V4; \
207 error ("bad value for -mcall-%s", rs6000_abi_name); \
208 } \
209 \
210 if (rs6000_sdata_name) \
211 { \
212 if (!strcmp (rs6000_sdata_name, "none")) \
213 rs6000_sdata = SDATA_NONE; \
214 else if (!strcmp (rs6000_sdata_name, "data")) \
215 rs6000_sdata = SDATA_DATA; \
216 else if (!strcmp (rs6000_sdata_name, "default")) \
217 rs6000_sdata = (TARGET_EABI) ? SDATA_EABI : SDATA_SYSV; \
218 else if (!strcmp (rs6000_sdata_name, "sysv")) \
219 rs6000_sdata = SDATA_SYSV; \
220 else if (!strcmp (rs6000_sdata_name, "eabi")) \
221 rs6000_sdata = SDATA_EABI; \
222 else \
223 error ("bad value for -msdata=%s", rs6000_sdata_name); \
224 } \
225 else if (DEFAULT_ABI == ABI_V4) \
226 { \
227 rs6000_sdata = SDATA_DATA; \
228 rs6000_sdata_name = "data"; \
229 } \
230 else \
231 { \
232 rs6000_sdata = SDATA_NONE; \
233 rs6000_sdata_name = "none"; \
234 } \
235 \
236 if (TARGET_RELOCATABLE && \
237 (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV)) \
238 { \
239 rs6000_sdata = SDATA_DATA; \
240 error ("-mrelocatable and -msdata=%s are incompatible", \
241 rs6000_sdata_name); \
242 } \
243 \
244 else if (flag_pic && DEFAULT_ABI != ABI_AIX \
245 && (rs6000_sdata == SDATA_EABI \
246 || rs6000_sdata == SDATA_SYSV)) \
247 { \
248 rs6000_sdata = SDATA_DATA; \
249 error ("-f%s and -msdata=%s are incompatible", \
250 (flag_pic > 1) ? "PIC" : "pic", \
251 rs6000_sdata_name); \
252 } \
253 \
254 if (rs6000_sdata != SDATA_NONE && DEFAULT_ABI != ABI_V4) \
255 { \
256 rs6000_sdata = SDATA_NONE; \
257 error ("-msdata=%s and -mcall-%s are incompatible", \
258 rs6000_sdata_name, rs6000_abi_name); \
259 } \
260 \
261 targetm.have_srodata_section = rs6000_sdata == SDATA_EABI; \
262 \
263 if (TARGET_RELOCATABLE && !TARGET_MINIMAL_TOC) \
264 { \
265 target_flags |= MASK_MINIMAL_TOC; \
266 error ("-mrelocatable and -mno-minimal-toc are incompatible"); \
267 } \
268 \
269 if (TARGET_RELOCATABLE && rs6000_current_abi == ABI_AIX) \
270 { \
271 target_flags &= ~MASK_RELOCATABLE; \
272 error ("-mrelocatable and -mcall-%s are incompatible", \
273 rs6000_abi_name); \
274 } \
275 \
276 if (flag_pic > 1 && rs6000_current_abi == ABI_AIX) \
277 { \
278 flag_pic = 0; \
279 error ("-fPIC and -mcall-%s are incompatible", \
280 rs6000_abi_name); \
281 } \
282 \
283 if (rs6000_current_abi == ABI_AIX && TARGET_LITTLE_ENDIAN) \
284 { \
285 target_flags &= ~MASK_LITTLE_ENDIAN; \
286 error ("-mcall-aixdesc must be big endian"); \
287 } \
288 \
289 /* Treat -fPIC the same as -mrelocatable. */ \
290 if (flag_pic > 1 && DEFAULT_ABI != ABI_AIX) \
291 target_flags |= MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC; \
292 \
293 else if (TARGET_RELOCATABLE) \
294 flag_pic = 2; \
295 \
296 } while (0)
297
298
299 /* Override rs6000.h definition. */
300 #undef TARGET_DEFAULT
301 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
302
303 /* Override rs6000.h definition. */
304 #undef PROCESSOR_DEFAULT
305 #define PROCESSOR_DEFAULT PROCESSOR_PPC750
306
307 #define FIXED_R2 1
308 /* System V.4 uses register 13 as a pointer to the small data area,
309 so it is not available to the normal user. */
310 #define FIXED_R13 1
311
312 /* Size of the V.4 varargs area if needed. */
313 /* Override rs6000.h definition. */
314 #undef RS6000_VARARGS_AREA
315 #define RS6000_VARARGS_AREA ((cfun->machine->sysv_varargs_p) ? RS6000_VARARGS_SIZE : 0)
316
317 /* Override default big endianism definitions in rs6000.h. */
318 #undef BYTES_BIG_ENDIAN
319 #undef WORDS_BIG_ENDIAN
320 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
321 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
322
323 /* Define this to set the endianness to use in libgcc2.c, which can
324 not depend on target_flags. */
325 #if !defined(_LITTLE_ENDIAN) && !defined(__sun__)
326 #define LIBGCC2_WORDS_BIG_ENDIAN 1
327 #else
328 #define LIBGCC2_WORDS_BIG_ENDIAN 0
329 #endif
330
331 /* Define cutoff for using external functions to save floating point.
332 Currently on V.4, always use inline stores. */
333 #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
334
335 /* Put jump tables in read-only memory, rather than in .text. */
336 #define JUMP_TABLES_IN_TEXT_SECTION 0
337
338 /* Prefix and suffix to use to saving floating point. */
339 #define SAVE_FP_PREFIX "_savefpr_"
340 #define SAVE_FP_SUFFIX "_l"
341
342 /* Prefix and suffix to use to restoring floating point. */
343 #define RESTORE_FP_PREFIX "_restfpr_"
344 #define RESTORE_FP_SUFFIX "_l"
345
346 /* Type used for ptrdiff_t, as a string used in a declaration. */
347 #define PTRDIFF_TYPE "int"
348
349 /* Type used for wchar_t, as a string used in a declaration. */
350 /* Override svr4.h definition. */
351 #undef WCHAR_TYPE
352 #define WCHAR_TYPE "long int"
353
354 /* Width of wchar_t in bits. */
355 /* Override svr4.h definition. */
356 #undef WCHAR_TYPE_SIZE
357 #define WCHAR_TYPE_SIZE 32
358
359 /* Make int foo : 8 not cause structures to be aligned to an int boundary. */
360 /* Override elfos.h definition. */
361 #undef PCC_BITFIELD_TYPE_MATTERS
362 #define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
363
364 #undef BITFIELD_NBYTES_LIMITED
365 #define BITFIELD_NBYTES_LIMITED (TARGET_NO_BITFIELD_WORD)
366
367 /* Define this macro to be the value 1 if instructions will fail to
368 work if given data not on the nominal alignment. If instructions
369 will merely go slower in that case, define this macro as 0. */
370 #undef STRICT_ALIGNMENT
371 #define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
372
373 /* Alignment in bits of the stack boundary. Note, in order to allow building
374 one set of libraries with -mno-eabi instead of eabi libraries and non-eabi
375 versions, just use 64 as the stack boundary. */
376 #undef STACK_BOUNDARY
377 #define STACK_BOUNDARY (TARGET_ALTIVEC_ABI ? 128 : 64)
378
379 /* Real stack boundary as mandated by the appropriate ABI. */
380 #define ABI_STACK_BOUNDARY ((TARGET_EABI && !TARGET_ALTIVEC_ABI) ? 64 : 128)
381
382 /* An expression for the alignment of a structure field FIELD if the
383 alignment computed in the usual way is COMPUTED. */
384 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
385 ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
386 ? 128 : COMPUTED)
387
388 /* Define this macro as an expression for the alignment of a type
389 (given by TYPE as a tree node) if the alignment computed in the
390 usual way is COMPUTED and the alignment explicitly specified was
391 SPECIFIED. */
392 #define ROUND_TYPE_ALIGN(TYPE, COMPUTED, SPECIFIED) \
393 ((TARGET_ALTIVEC && TREE_CODE (TYPE) == VECTOR_TYPE) \
394 ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \
395 : MAX (COMPUTED, SPECIFIED))
396
397 #undef BIGGEST_FIELD_ALIGNMENT
398
399 /* Use ELF style section commands. */
400
401 #define TEXT_SECTION_ASM_OP "\t.section\t\".text\""
402
403 #define DATA_SECTION_ASM_OP "\t.section\t\".data\""
404
405 #define BSS_SECTION_ASM_OP "\t.section\t\".bss\""
406
407 /* Override elfos.h definition. */
408 #undef INIT_SECTION_ASM_OP
409 #define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
410
411 /* Override elfos.h definition. */
412 #undef FINI_SECTION_ASM_OP
413 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
414
415 #define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
416
417 /* Put PC relative got entries in .got2. */
418 #define MINIMAL_TOC_SECTION_ASM_OP \
419 (TARGET_RELOCATABLE || (flag_pic && DEFAULT_ABI != ABI_AIX) \
420 ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
421
422 #define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
423 #define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
424 #define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
425
426 /* Besides the usual ELF sections, we need a toc section. */
427 /* Override elfos.h definition. */
428 #undef EXTRA_SECTIONS
429 #define EXTRA_SECTIONS in_toc, in_sdata, in_sdata2, in_sbss, in_init, in_fini
430
431 /* Override elfos.h definition. */
432 #undef EXTRA_SECTION_FUNCTIONS
433 #define EXTRA_SECTION_FUNCTIONS \
434 TOC_SECTION_FUNCTION \
435 SDATA_SECTION_FUNCTION \
436 SDATA2_SECTION_FUNCTION \
437 SBSS_SECTION_FUNCTION \
438 INIT_SECTION_FUNCTION \
439 FINI_SECTION_FUNCTION
440
441 #define TOC_SECTION_FUNCTION \
442 void \
443 toc_section () \
444 { \
445 if (in_section != in_toc) \
446 { \
447 in_section = in_toc; \
448 if (DEFAULT_ABI == ABI_AIX \
449 && TARGET_MINIMAL_TOC \
450 && !TARGET_RELOCATABLE) \
451 { \
452 if (! toc_initialized) \
453 { \
454 toc_initialized = 1; \
455 fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
456 (*targetm.asm_out.internal_label) (asm_out_file, "LCTOC", 0); \
457 fprintf (asm_out_file, "\t.tc "); \
458 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1[TC],"); \
459 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
460 fprintf (asm_out_file, "\n"); \
461 \
462 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
463 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
464 fprintf (asm_out_file, " = .+32768\n"); \
465 } \
466 else \
467 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
468 } \
469 else if (DEFAULT_ABI == ABI_AIX && !TARGET_RELOCATABLE) \
470 fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
471 else \
472 { \
473 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
474 if (! toc_initialized) \
475 { \
476 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
477 fprintf (asm_out_file, " = .+32768\n"); \
478 toc_initialized = 1; \
479 } \
480 } \
481 } \
482 } \
483 \
484 extern int in_toc_section PARAMS ((void)); \
485 int in_toc_section () \
486 { \
487 return in_section == in_toc; \
488 }
489
490 #define SDATA_SECTION_FUNCTION \
491 void \
492 sdata_section () \
493 { \
494 if (in_section != in_sdata) \
495 { \
496 in_section = in_sdata; \
497 fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
498 } \
499 }
500
501 #define SDATA2_SECTION_FUNCTION \
502 void \
503 sdata2_section () \
504 { \
505 if (in_section != in_sdata2) \
506 { \
507 in_section = in_sdata2; \
508 fprintf (asm_out_file, "%s\n", SDATA2_SECTION_ASM_OP); \
509 } \
510 }
511
512 #define SBSS_SECTION_FUNCTION \
513 void \
514 sbss_section () \
515 { \
516 if (in_section != in_sbss) \
517 { \
518 in_section = in_sbss; \
519 fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP); \
520 } \
521 }
522
523 #define INIT_SECTION_FUNCTION \
524 void \
525 init_section () \
526 { \
527 if (in_section != in_init) \
528 { \
529 in_section = in_init; \
530 fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP); \
531 } \
532 }
533
534 #define FINI_SECTION_FUNCTION \
535 void \
536 fini_section () \
537 { \
538 if (in_section != in_fini) \
539 { \
540 in_section = in_fini; \
541 fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP); \
542 } \
543 }
544
545 /* Override default elf definitions. */
546 #undef TARGET_ASM_SELECT_RTX_SECTION
547 #define TARGET_ASM_SELECT_RTX_SECTION rs6000_elf_select_rtx_section
548 #undef TARGET_ASM_SELECT_SECTION
549 #define TARGET_ASM_SELECT_SECTION rs6000_elf_select_section
550 #define TARGET_ASM_UNIQUE_SECTION rs6000_elf_unique_section
551
552 /* Return nonzero if this entry is to be written into the constant pool
553 in a special way. We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
554 containing one of them. If -mfp-in-toc (the default), we also do
555 this for floating-point constants. We actually can only do this
556 if the FP formats of the target and host machines are the same, but
557 we can't check that since not every file that uses
558 GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
559
560 Unlike AIX, we don't key off of -mminimal-toc, but instead do not
561 allow floating point constants in the TOC if -mrelocatable. */
562
563 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
564 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
565 (TARGET_TOC \
566 && (GET_CODE (X) == SYMBOL_REF \
567 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
568 && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
569 || GET_CODE (X) == LABEL_REF \
570 || (GET_CODE (X) == CONST_INT \
571 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
572 || (!TARGET_NO_FP_IN_TOC \
573 && !TARGET_RELOCATABLE \
574 && GET_CODE (X) == CONST_DOUBLE \
575 && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
576 && BITS_PER_WORD == HOST_BITS_PER_INT)))
577
578 /* These macros generate the special .type and .size directives which
579 are used to set the corresponding fields of the linker symbol table
580 entries in an ELF object file under SVR4. These macros also output
581 the starting labels for the relevant functions/objects. */
582
583 /* Write the extra assembler code needed to declare a function properly.
584 Some svr4 assemblers need to also have something extra said about the
585 function's return value. We allow for that here. */
586
587 extern int rs6000_pic_labelno;
588
589 /* Override elfos.h definition. */
590 #undef ASM_DECLARE_FUNCTION_NAME
591 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
592 do { \
593 const char *const init_ptr = (TARGET_64BIT) ? ".quad" : ".long"; \
594 \
595 if (TARGET_RELOCATABLE \
596 && (get_pool_size () != 0 || current_function_profile) \
597 && uses_TOC()) \
598 { \
599 char buf[256]; \
600 \
601 (*targetm.asm_out.internal_label) (FILE, "LCL", rs6000_pic_labelno); \
602 \
603 ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1); \
604 fprintf (FILE, "\t%s ", init_ptr); \
605 assemble_name (FILE, buf); \
606 putc ('-', FILE); \
607 ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno); \
608 assemble_name (FILE, buf); \
609 putc ('\n', FILE); \
610 } \
611 \
612 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
613 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
614 \
615 if (DEFAULT_ABI == ABI_AIX) \
616 { \
617 const char *desc_name, *orig_name; \
618 \
619 orig_name = (*targetm.strip_name_encoding) (NAME); \
620 desc_name = orig_name; \
621 while (*desc_name == '.') \
622 desc_name++; \
623 \
624 if (TREE_PUBLIC (DECL)) \
625 fprintf (FILE, "\t.globl %s\n", desc_name); \
626 \
627 fprintf (FILE, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
628 fprintf (FILE, "%s:\n", desc_name); \
629 fprintf (FILE, "\t%s %s\n", init_ptr, orig_name); \
630 fprintf (FILE, "\t%s _GLOBAL_OFFSET_TABLE_\n", init_ptr); \
631 if (DEFAULT_ABI == ABI_AIX) \
632 fprintf (FILE, "\t%s 0\n", init_ptr); \
633 fprintf (FILE, "\t.previous\n"); \
634 } \
635 ASM_OUTPUT_LABEL (FILE, NAME); \
636 } while (0)
637
638 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
639 flag. The LOCAL_LABEL_PREFIX variable is used by dbxelf.h. */
640
641 #define LOCAL_LABEL_PREFIX "."
642 #define USER_LABEL_PREFIX ""
643
644 /* svr4.h overrides (*targetm.asm_out.internal_label). */
645
646 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \
647 asm_fprintf (FILE, "%L%s", PREFIX)
648
649 /* Globalizing directive for a label. */
650 #define GLOBAL_ASM_OP "\t.globl "
651
652 /* This says how to output assembler code to declare an
653 uninitialized internal linkage data object. Under SVR4,
654 the linker seems to want the alignment of data objects
655 to depend on their types. We do exactly that here. */
656
657 #define LOCAL_ASM_OP "\t.local\t"
658
659 #define LCOMM_ASM_OP "\t.lcomm\t"
660
661 /* Override elfos.h definition. */
662 #undef ASM_OUTPUT_ALIGNED_LOCAL
663 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
664 do { \
665 if (rs6000_sdata != SDATA_NONE && (SIZE) > 0 \
666 && (SIZE) <= g_switch_value) \
667 { \
668 sbss_section (); \
669 ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT)); \
670 ASM_OUTPUT_LABEL (FILE, NAME); \
671 ASM_OUTPUT_SKIP (FILE, SIZE); \
672 if (!flag_inhibit_size_directive && (SIZE) > 0) \
673 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
674 } \
675 else \
676 { \
677 fprintf (FILE, "%s", LCOMM_ASM_OP); \
678 assemble_name ((FILE), (NAME)); \
679 fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
680 } \
681 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
682 } while (0)
683
684 /* Describe how to emit uninitialized external linkage items. */
685 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
686 do { \
687 ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \
688 } while (0)
689
690 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
691 /* To support -falign-* switches we need to use .p2align so
692 that alignment directives in code sections will be padded
693 with no-op instructions, rather than zeroes. */
694 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
695 if ((LOG) != 0) \
696 { \
697 if ((MAX_SKIP) == 0) \
698 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
699 else \
700 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
701 }
702 #endif
703
704 /* This is how to output code to push a register on the stack.
705 It need not be very fast code.
706
707 On the rs6000, we must keep the backchain up to date. In order
708 to simplify things, always allocate 16 bytes for a push (System V
709 wants to keep stack aligned to a 16 byte boundary). */
710
711 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \
712 do { \
713 if (DEFAULT_ABI == ABI_V4) \
714 asm_fprintf (FILE, \
715 "\t{stu|stwu} %s,-16(%s)\n\t{st|stw} %s,12(%s)\n", \
716 reg_names[1], reg_names[1], reg_names[REGNO], \
717 reg_names[1]); \
718 } while (0)
719
720 /* This is how to output an insn to pop a register from the stack.
721 It need not be very fast code. */
722
723 #define ASM_OUTPUT_REG_POP(FILE, REGNO) \
724 do { \
725 if (DEFAULT_ABI == ABI_V4) \
726 asm_fprintf (FILE, \
727 "\t{l|lwz} %s,12(%s)\n\t{ai|addic} %s,%s,16\n", \
728 reg_names[REGNO], reg_names[1], reg_names[1], \
729 reg_names[1]); \
730 } while (0)
731
732 /* Switch Recognition by gcc.c. Add -G xx support. */
733
734 /* Override svr4.h definition. */
735 #undef SWITCH_TAKES_ARG
736 #define SWITCH_TAKES_ARG(CHAR) \
737 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
738 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
739 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
740 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
741 || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
742
743 /* Output .file. */
744 /* Override elfos.h definition. */
745 #undef ASM_FILE_START
746 #define ASM_FILE_START(FILE) \
747 do { \
748 output_file_directive ((FILE), main_input_filename); \
749 rs6000_file_start (FILE, TARGET_CPU_DEFAULT); \
750 } while (0)
751
752
753 extern int fixuplabelno;
754
755 /* Handle constructors specially for -mrelocatable. */
756 #define TARGET_ASM_CONSTRUCTOR rs6000_elf_asm_out_constructor
757 #define TARGET_ASM_DESTRUCTOR rs6000_elf_asm_out_destructor
758
759 /* This is the end of what might become sysv4.h. */
760
761 /* Use DWARF 2 debugging information by default. */
762 #undef PREFERRED_DEBUGGING_TYPE
763 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
764
765 /* Historically we have also supported stabs debugging. */
766 #define DBX_DEBUGGING_INFO 1
767
768 #define TARGET_ENCODE_SECTION_INFO rs6000_elf_encode_section_info
769 #define TARGET_STRIP_NAME_ENCODING rs6000_elf_strip_name_encoding
770 #define TARGET_IN_SMALL_DATA_P rs6000_elf_in_small_data_p
771 #define TARGET_SECTION_TYPE_FLAGS rs6000_elf_section_type_flags
772
773 /* The ELF version doesn't encode [DS] or whatever at the end of symbols. */
774
775 #define RS6000_OUTPUT_BASENAME(FILE, NAME) \
776 assemble_name (FILE, NAME)
777
778 /* This is how to output a reference to a user-level label named NAME.
779 `assemble_name' uses this. */
780
781 /* Override elfos.h definition. */
782 #undef ASM_OUTPUT_LABELREF
783 #define ASM_OUTPUT_LABELREF(FILE,NAME) \
784 do { \
785 const char *_name = NAME; \
786 if (*_name == '@') \
787 _name++; \
788 \
789 if (*_name == '*') \
790 fprintf (FILE, "%s", _name + 1); \
791 else \
792 asm_fprintf (FILE, "%U%s", _name); \
793 } while (0)
794
795 /* But, to make this work, we have to output the stabs for the function
796 name *first*... */
797
798 #define DBX_FUNCTION_FIRST
799
800 /* This is the end of what might become sysv4dbx.h. */
801
802 #ifndef TARGET_VERSION
803 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
804 #endif
805 \f
806 #ifndef TARGET_OS_CPP_BUILTINS
807 #define TARGET_OS_CPP_BUILTINS() \
808 do \
809 { \
810 builtin_define_std ("PPC"); \
811 builtin_define_std ("unix"); \
812 builtin_define ("__svr4__"); \
813 builtin_assert ("system=unix"); \
814 builtin_assert ("system=svr4"); \
815 builtin_assert ("cpu=powerpc"); \
816 builtin_assert ("machine=powerpc"); \
817 } \
818 while (0)
819 #endif
820
821 /* Pass various options to the assembler. */
822 /* Override svr4.h definition. */
823 #undef ASM_SPEC
824 #define ASM_SPEC "%(asm_cpu) \
825 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
826 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
827 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
828 %{memb|msdata|msdata=eabi: -memb} \
829 %{mlittle|mlittle-endian:-mlittle; \
830 mbig|mbig-endian :-mbig; \
831 mcall-aixdesc | \
832 mcall-freebsd | \
833 mcall-netbsd | \
834 mcall-linux | \
835 mcall-gnu :-mbig; \
836 mcall-i960-old :-mlittle}"
837
838 #define CC1_ENDIAN_BIG_SPEC ""
839
840 #define CC1_ENDIAN_LITTLE_SPEC "\
841 %{!mstrict-align: %{!mno-strict-align: \
842 %{!mcall-i960-old: \
843 -mstrict-align \
844 } \
845 }}"
846
847 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big)"
848
849 /* Pass -G xxx to the compiler and set correct endian mode. */
850 #define CC1_SPEC "%{G*} \
851 %{mlittle|mlittle-endian: %(cc1_endian_little); \
852 mbig |mbig-endian : %(cc1_endian_big); \
853 mcall-aixdesc | \
854 mcall-freebsd | \
855 mcall-netbsd | \
856 mcall-linux | \
857 mcall-gnu : -mbig %(cc1_endian_big); \
858 mcall-i960-old : -mlittle %(cc1_endian_little); \
859 : %(cc1_endian_default)} \
860 %{mno-sdata: -msdata=none } \
861 %{meabi: %{!mcall-*: -mcall-sysv }} \
862 %{!meabi: %{!mno-eabi: \
863 %{mrelocatable: -meabi } \
864 %{mcall-freebsd: -mno-eabi } \
865 %{mcall-i960-old: -meabi } \
866 %{mcall-linux: -mno-eabi } \
867 %{mcall-gnu: -mno-eabi } \
868 %{mcall-netbsd: -mno-eabi }}} \
869 %{msdata: -msdata=default} \
870 %{mno-sdata: -msdata=none} \
871 %{profile: -p}"
872
873 /* Don't put -Y P,<path> for cross compilers. */
874 #ifndef CROSS_COMPILE
875 #define LINK_PATH_SPEC "\
876 %{!R*:%{L*:-R %*}} \
877 %{!nostdlib: %{!YP,*: \
878 %{compat-bsd: \
879 %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
880 %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
881 %{!R*: %{!L*: -R /usr/ucblib}} \
882 %{!compat-bsd: \
883 %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
884 %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
885
886 #else
887 #define LINK_PATH_SPEC ""
888 #endif
889
890 /* Default starting address if specified. */
891 #define LINK_START_SPEC "\
892 %{mads : %(link_start_ads) ; \
893 myellowknife : %(link_start_yellowknife) ; \
894 mmvme : %(link_start_mvme) ; \
895 msim : %(link_start_sim) ; \
896 mwindiss : %(link_start_windiss) ; \
897 mcall-freebsd: %(link_start_freebsd) ; \
898 mcall-linux : %(link_start_linux) ; \
899 mcall-gnu : %(link_start_gnu) ; \
900 mcall-netbsd : %(link_start_netbsd) ; \
901 : %(link_start_default) }"
902
903 #define LINK_START_DEFAULT_SPEC ""
904
905 /* Override svr4.h definition. */
906 #undef LINK_SPEC
907 #define LINK_SPEC "\
908 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
909 %{YP,*} %{R*} \
910 %{Qy:} %{!Qn:-Qy} \
911 %(link_shlib) \
912 %{!Wl,-T*: %{!T*: %(link_start) }} \
913 %(link_target) \
914 %(link_os)"
915
916 /* For now, turn off shared libraries by default. */
917 #ifndef SHARED_LIB_SUPPORT
918 #define NO_SHARED_LIB_SUPPORT
919 #endif
920
921 #ifndef NO_SHARED_LIB_SUPPORT
922 /* Shared libraries are default. */
923 #define LINK_SHLIB_SPEC "\
924 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
925 %{mshlib: } \
926 %{static:-dn -Bstatic} \
927 %{shared:-G -dy -z text} \
928 %{symbolic:-Bsymbolic -G -dy -z text}"
929
930 #else
931 /* Shared libraries are not default. */
932 #define LINK_SHLIB_SPEC "\
933 %{mshlib: %(link_path) } \
934 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
935 %{static: } \
936 %{shared:-G -dy -z text %(link_path) } \
937 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
938 #endif
939
940 /* Override the default target of the linker. */
941 #define LINK_TARGET_SPEC "\
942 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
943 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
944 %{mcall-i960-old: --oformat elf32-powerpcle} \
945 }}}}"
946
947 /* Any specific OS flags. */
948 #define LINK_OS_SPEC "\
949 %{mads : %(link_os_ads) ; \
950 myellowknife : %(link_os_yellowknife) ; \
951 mmvme : %(link_os_mvme) ; \
952 msim : %(link_os_sim) ; \
953 mwindiss : %(link_os_windiss) ; \
954 mcall-freebsd: %(link_os_freebsd) ; \
955 mcall-linux : %(link_os_linux) ; \
956 mcall-gnu : %(link_os_gnu) ; \
957 mcall-netbsd : %(link_os_netbsd) ; \
958 : %(link_os_default) }"
959
960 #define LINK_OS_DEFAULT_SPEC ""
961
962 #define CPP_SYSV_SPEC \
963 "%{mrelocatable*: -D_RELOCATABLE} \
964 %{fpic: -D__PIC__=1 -D__pic__=1} \
965 %{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}}"
966
967 /* Override rs6000.h definition. */
968 #undef CPP_SPEC
969 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) \
970 %{mads : %(cpp_os_ads) ; \
971 myellowknife : %(cpp_os_yellowknife) ; \
972 mmvme : %(cpp_os_mvme) ; \
973 msim : %(cpp_os_sim) ; \
974 mwindiss : %(cpp_os_windiss) ; \
975 mcall-freebsd: %(cpp_os_freebsd) ; \
976 mcall-linux : %(cpp_os_linux) ; \
977 mcall-gnu : %(cpp_os_gnu) ; \
978 mcall-netbsd : %(cpp_os_netbsd) ; \
979 : %(cpp_os_default) }"
980
981 #define CPP_OS_DEFAULT_SPEC ""
982
983 /* Override svr4.h definition. */
984 #undef STARTFILE_SPEC
985 #define STARTFILE_SPEC "\
986 %{mads : %(startfile_ads) ; \
987 myellowknife : %(startfile_yellowknife) ; \
988 mmvme : %(startfile_mvme) ; \
989 msim : %(startfile_sim) ; \
990 mwindiss : %(startfile_windiss) ; \
991 mcall-freebsd: %(startfile_freebsd) ; \
992 mcall-linux : %(startfile_linux) ; \
993 mcall-gnu : %(startfile_gnu) ; \
994 mcall-netbsd : %(startfile_netbsd) ; \
995 : %(startfile_default) }"
996
997 #define STARTFILE_DEFAULT_SPEC ""
998
999 /* Override svr4.h definition. */
1000 #undef LIB_SPEC
1001 #define LIB_SPEC "\
1002 %{mads : %(lib_ads) ; \
1003 myellowknife : %(lib_yellowknife) ; \
1004 mmvme : %(lib_mvme) ; \
1005 msim : %(lib_sim) ; \
1006 mwindiss : %(lib_windiss) ; \
1007 mcall-freebsd: %(lib_freebsd) ; \
1008 mcall-linux : %(lib_linux) ; \
1009 mcall-gnu : %(lib_gnu) ; \
1010 mcall-netbsd : %(lib_netbsd) ; \
1011 : %(lib_default) }"
1012
1013 #define LIB_DEFAULT_SPEC ""
1014
1015 /* Override svr4.h definition. */
1016 #undef ENDFILE_SPEC
1017 #define ENDFILE_SPEC "\
1018 %{mads : crtsavres.o%s %(endfile_ads) ; \
1019 myellowknife : crtsavres.o%s %(endfile_yellowknife) ; \
1020 mmvme : crtsavres.o%s %(endfile_mvme) ; \
1021 msim : crtsavres.o%s %(endfile_sim) ; \
1022 mwindiss : %(endfile_windiss) ; \
1023 mcall-freebsd: crtsavres.o%s %(endfile_freebsd) ; \
1024 mcall-linux : crtsavres.o%s %(endfile_linux) ; \
1025 mcall-gnu : crtsavres.o%s %(endfile_gnu) ; \
1026 mcall-netbsd : crtsavres.o%s %(endfile_netbsd) ; \
1027 : %(crtsavres_default) %(endfile_default) }"
1028
1029 #define CRTSAVRES_DEFAULT_SPEC "crtsavres.o%s"
1030
1031 #define ENDFILE_DEFAULT_SPEC ""
1032
1033 /* Motorola ADS support. */
1034 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
1035
1036 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1037
1038 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
1039
1040 #define LINK_START_ADS_SPEC "-T ads.ld%s"
1041
1042 #define LINK_OS_ADS_SPEC ""
1043
1044 #define CPP_OS_ADS_SPEC ""
1045
1046 /* Motorola Yellowknife support. */
1047 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
1048
1049 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1050
1051 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
1052
1053 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
1054
1055 #define LINK_OS_YELLOWKNIFE_SPEC ""
1056
1057 #define CPP_OS_YELLOWKNIFE_SPEC ""
1058
1059 /* Motorola MVME support. */
1060 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
1061
1062 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1063
1064 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
1065
1066 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
1067
1068 #define LINK_OS_MVME_SPEC ""
1069
1070 #define CPP_OS_MVME_SPEC ""
1071
1072 /* PowerPC simulator based on netbsd system calls support. */
1073 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
1074
1075 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
1076
1077 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
1078
1079 #define LINK_START_SIM_SPEC ""
1080
1081 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
1082
1083 #define CPP_OS_SIM_SPEC ""
1084
1085 /* FreeBSD support. */
1086
1087 #define CPP_OS_FREEBSD_SPEC "\
1088 -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
1089 -Acpu=powerpc -Amachine=powerpc"
1090
1091 #define STARTFILE_FREEBSD_SPEC FBSD_STARTFILE_SPEC
1092 #define ENDFILE_FREEBSD_SPEC FBSD_ENDFILE_SPEC
1093 #define LIB_FREEBSD_SPEC FBSD_LIB_SPEC
1094 #define LINK_START_FREEBSD_SPEC ""
1095
1096 #define LINK_OS_FREEBSD_SPEC "\
1097 %{symbolic:-Bsymbolic}"
1098
1099 /* GNU/Linux support. */
1100 #ifdef USE_GNULIBC_1
1101 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1102 %{!mnewlib: -lc }"
1103 #else
1104 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1105 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1106 %{profile:-lc_p} %{!profile:-lc}}}"
1107 #endif
1108
1109 #ifdef USE_GNULIBC_1
1110 #define STARTFILE_LINUX_SPEC "\
1111 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1112 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1113 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1114 #else
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 %{static:crtbeginT.o%s} \
1119 %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.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__ELF__ -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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