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comparison gcc/config/rs6000/sysv4.h @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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-1:000000000000 0:a06113de4d67
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 2004, 2005, 2006, 2007, 2008, 2009 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 3, 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 Under Section 7 of GPL version 3, you are granted additional
19 permissions described in the GCC Runtime Library Exception, version
20 3.1, as published by the Free Software Foundation.
21
22 You should have received a copy of the GNU General Public License and
23 a copy of the GCC Runtime Library Exception along with this program;
24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
25 <http://www.gnu.org/licenses/>. */
26
27 /* Header files should be C++ aware in general. */
28 #undef NO_IMPLICIT_EXTERN_C
29 #define NO_IMPLICIT_EXTERN_C
30
31 /* Yes! We are ELF. */
32 #define TARGET_OBJECT_FORMAT OBJECT_ELF
33
34 /* Default ABI to compile code for. */
35 #define DEFAULT_ABI rs6000_current_abi
36
37 /* Default ABI to use. */
38 #define RS6000_ABI_NAME "sysv"
39
40 /* Override rs6000.h definition. */
41 #undef ASM_DEFAULT_SPEC
42 #define ASM_DEFAULT_SPEC "-mppc"
43
44 /* Small data support types. */
45 enum rs6000_sdata_type {
46 SDATA_NONE, /* No small data support. */
47 SDATA_DATA, /* Just put data in .sbss/.sdata, don't use relocs. */
48 SDATA_SYSV, /* Use r13 to point to .sdata/.sbss. */
49 SDATA_EABI /* Use r13 like above, r2 points to .sdata2/.sbss2. */
50 };
51
52 extern enum rs6000_sdata_type rs6000_sdata;
53
54 #define TARGET_TOC ((target_flags & MASK_64BIT) \
55 || ((target_flags & (MASK_RELOCATABLE \
56 | MASK_MINIMAL_TOC)) \
57 && flag_pic > 1) \
58 || DEFAULT_ABI == ABI_AIX)
59
60 #define TARGET_BITFIELD_TYPE (! TARGET_NO_BITFIELD_TYPE)
61 #define TARGET_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)
62 #define TARGET_NO_PROTOTYPE (! TARGET_PROTOTYPE)
63 #define TARGET_NO_TOC (! TARGET_TOC)
64 #define TARGET_NO_EABI (! TARGET_EABI)
65
66 #ifdef HAVE_AS_REL16
67 #undef TARGET_SECURE_PLT
68 #define TARGET_SECURE_PLT secure_plt
69 #endif
70
71 extern const char *rs6000_abi_name;
72 extern const char *rs6000_sdata_name;
73 extern const char *rs6000_tls_size_string; /* For -mtls-size= */
74
75 #define SDATA_DEFAULT_SIZE 8
76
77 /* Sometimes certain combinations of command options do not make sense
78 on a particular target machine. You can define a macro
79 `OVERRIDE_OPTIONS' to take account of this. This macro, if
80 defined, is executed once just after all the command options have
81 been parsed.
82
83 The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
84 get control. */
85
86 #define SUBTARGET_OVERRIDE_OPTIONS \
87 do { \
88 if (!g_switch_set) \
89 g_switch_value = SDATA_DEFAULT_SIZE; \
90 \
91 if (rs6000_abi_name == NULL) \
92 rs6000_abi_name = RS6000_ABI_NAME; \
93 \
94 if (!strcmp (rs6000_abi_name, "sysv")) \
95 rs6000_current_abi = ABI_V4; \
96 else if (!strcmp (rs6000_abi_name, "sysv-noeabi")) \
97 { \
98 rs6000_current_abi = ABI_V4; \
99 target_flags &= ~ MASK_EABI; \
100 } \
101 else if (!strcmp (rs6000_abi_name, "sysv-eabi") \
102 || !strcmp (rs6000_abi_name, "eabi")) \
103 { \
104 rs6000_current_abi = ABI_V4; \
105 target_flags |= MASK_EABI; \
106 } \
107 else if (!strcmp (rs6000_abi_name, "aixdesc")) \
108 rs6000_current_abi = ABI_AIX; \
109 else if (!strcmp (rs6000_abi_name, "freebsd")) \
110 rs6000_current_abi = ABI_V4; \
111 else if (!strcmp (rs6000_abi_name, "linux")) \
112 { \
113 if (TARGET_64BIT) \
114 rs6000_current_abi = ABI_AIX; \
115 else \
116 rs6000_current_abi = ABI_V4; \
117 } \
118 else if (!strcmp (rs6000_abi_name, "gnu")) \
119 rs6000_current_abi = ABI_V4; \
120 else if (!strcmp (rs6000_abi_name, "netbsd")) \
121 rs6000_current_abi = ABI_V4; \
122 else if (!strcmp (rs6000_abi_name, "openbsd")) \
123 rs6000_current_abi = ABI_V4; \
124 else if (!strcmp (rs6000_abi_name, "i960-old")) \
125 { \
126 rs6000_current_abi = ABI_V4; \
127 target_flags |= (MASK_LITTLE_ENDIAN | MASK_EABI \
128 | MASK_NO_BITFIELD_WORD); \
129 target_flags &= ~MASK_STRICT_ALIGN; \
130 } \
131 else \
132 { \
133 rs6000_current_abi = ABI_V4; \
134 error ("bad value for -mcall-%s", rs6000_abi_name); \
135 } \
136 \
137 if (rs6000_sdata_name) \
138 { \
139 if (!strcmp (rs6000_sdata_name, "none")) \
140 rs6000_sdata = SDATA_NONE; \
141 else if (!strcmp (rs6000_sdata_name, "data")) \
142 rs6000_sdata = SDATA_DATA; \
143 else if (!strcmp (rs6000_sdata_name, "default")) \
144 rs6000_sdata = (TARGET_EABI) ? SDATA_EABI : SDATA_SYSV; \
145 else if (!strcmp (rs6000_sdata_name, "sysv")) \
146 rs6000_sdata = SDATA_SYSV; \
147 else if (!strcmp (rs6000_sdata_name, "eabi")) \
148 rs6000_sdata = SDATA_EABI; \
149 else \
150 error ("bad value for -msdata=%s", rs6000_sdata_name); \
151 } \
152 else if (DEFAULT_ABI == ABI_V4) \
153 { \
154 rs6000_sdata = SDATA_DATA; \
155 rs6000_sdata_name = "data"; \
156 } \
157 else \
158 { \
159 rs6000_sdata = SDATA_NONE; \
160 rs6000_sdata_name = "none"; \
161 } \
162 \
163 if (TARGET_RELOCATABLE && \
164 (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV)) \
165 { \
166 rs6000_sdata = SDATA_DATA; \
167 error ("-mrelocatable and -msdata=%s are incompatible", \
168 rs6000_sdata_name); \
169 } \
170 \
171 else if (flag_pic && DEFAULT_ABI != ABI_AIX \
172 && (rs6000_sdata == SDATA_EABI \
173 || rs6000_sdata == SDATA_SYSV)) \
174 { \
175 rs6000_sdata = SDATA_DATA; \
176 error ("-f%s and -msdata=%s are incompatible", \
177 (flag_pic > 1) ? "PIC" : "pic", \
178 rs6000_sdata_name); \
179 } \
180 \
181 if ((rs6000_sdata != SDATA_NONE && DEFAULT_ABI != ABI_V4) \
182 || (rs6000_sdata == SDATA_EABI && !TARGET_EABI)) \
183 { \
184 rs6000_sdata = SDATA_NONE; \
185 error ("-msdata=%s and -mcall-%s are incompatible", \
186 rs6000_sdata_name, rs6000_abi_name); \
187 } \
188 \
189 targetm.have_srodata_section = rs6000_sdata == SDATA_EABI; \
190 \
191 if (TARGET_RELOCATABLE && !TARGET_MINIMAL_TOC) \
192 { \
193 target_flags |= MASK_MINIMAL_TOC; \
194 error ("-mrelocatable and -mno-minimal-toc are incompatible"); \
195 } \
196 \
197 if (TARGET_RELOCATABLE && rs6000_current_abi == ABI_AIX) \
198 { \
199 target_flags &= ~MASK_RELOCATABLE; \
200 error ("-mrelocatable and -mcall-%s are incompatible", \
201 rs6000_abi_name); \
202 } \
203 \
204 if (!TARGET_64BIT && flag_pic > 1 && rs6000_current_abi == ABI_AIX) \
205 { \
206 flag_pic = 0; \
207 error ("-fPIC and -mcall-%s are incompatible", \
208 rs6000_abi_name); \
209 } \
210 \
211 if (rs6000_current_abi == ABI_AIX && TARGET_LITTLE_ENDIAN) \
212 { \
213 target_flags &= ~MASK_LITTLE_ENDIAN; \
214 error ("-mcall-aixdesc must be big endian"); \
215 } \
216 \
217 if (TARGET_SECURE_PLT != secure_plt) \
218 { \
219 error ("-msecure-plt not supported by your assembler"); \
220 } \
221 \
222 /* Treat -fPIC the same as -mrelocatable. */ \
223 if (flag_pic > 1 && DEFAULT_ABI != ABI_AIX) \
224 { \
225 target_flags |= MASK_RELOCATABLE | MASK_MINIMAL_TOC; \
226 TARGET_NO_FP_IN_TOC = 1; \
227 } \
228 \
229 else if (TARGET_RELOCATABLE) \
230 flag_pic = 2; \
231 } while (0)
232
233 #ifndef RS6000_BI_ARCH
234 # define SUBSUBTARGET_OVERRIDE_OPTIONS \
235 do { \
236 if ((TARGET_DEFAULT ^ target_flags) & MASK_64BIT) \
237 error ("-m%s not supported in this configuration", \
238 (target_flags & MASK_64BIT) ? "64" : "32"); \
239 } while (0)
240 #endif
241
242 /* Override rs6000.h definition. */
243 #undef TARGET_DEFAULT
244 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
245
246 /* Override rs6000.h definition. */
247 #undef PROCESSOR_DEFAULT
248 #define PROCESSOR_DEFAULT PROCESSOR_PPC750
249
250 /* SVR4 only defined for PowerPC, so short-circuit POWER patterns. */
251 #undef TARGET_POWER
252 #define TARGET_POWER 0
253
254 #define FIXED_R2 1
255 /* System V.4 uses register 13 as a pointer to the small data area,
256 so it is not available to the normal user. */
257 #define FIXED_R13 1
258
259 /* Override default big endianism definitions in rs6000.h. */
260 #undef BYTES_BIG_ENDIAN
261 #undef WORDS_BIG_ENDIAN
262 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
263 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
264
265 /* Define this to set the endianness to use in libgcc2.c, which can
266 not depend on target_flags. */
267 #if !defined(__LITTLE_ENDIAN__) && !defined(__sun__)
268 #define LIBGCC2_WORDS_BIG_ENDIAN 1
269 #else
270 #define LIBGCC2_WORDS_BIG_ENDIAN 0
271 #endif
272
273 /* Define cutoff for using external functions to save floating point.
274 Currently on 64-bit V.4, always use inline stores. When optimizing
275 for size on 32-bit targets, use external functions when
276 profitable. */
277 #define FP_SAVE_INLINE(FIRST_REG) (optimize_size && !TARGET_64BIT \
278 ? ((FIRST_REG) == 62 \
279 || (FIRST_REG) == 63) \
280 : (FIRST_REG) < 64)
281 /* And similarly for general purpose registers. */
282 #define GP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 32 \
283 && (TARGET_64BIT || !optimize_size))
284
285 /* Put jump tables in read-only memory, rather than in .text. */
286 #define JUMP_TABLES_IN_TEXT_SECTION 0
287
288 /* Prefix and suffix to use to saving floating point. */
289 #define SAVE_FP_PREFIX "_savefpr_"
290 #define SAVE_FP_SUFFIX (TARGET_64BIT ? "_l" : "")
291
292 /* Prefix and suffix to use to restoring floating point. */
293 #define RESTORE_FP_PREFIX "_restfpr_"
294 #define RESTORE_FP_SUFFIX (TARGET_64BIT ? "_l" : "")
295
296 /* Type used for ptrdiff_t, as a string used in a declaration. */
297 #define PTRDIFF_TYPE "int"
298
299 /* Type used for wchar_t, as a string used in a declaration. */
300 /* Override svr4.h definition. */
301 #undef WCHAR_TYPE
302 #define WCHAR_TYPE "long int"
303
304 /* Width of wchar_t in bits. */
305 /* Override svr4.h definition. */
306 #undef WCHAR_TYPE_SIZE
307 #define WCHAR_TYPE_SIZE 32
308
309 /* Make int foo : 8 not cause structures to be aligned to an int boundary. */
310 /* Override elfos.h definition. */
311 #undef PCC_BITFIELD_TYPE_MATTERS
312 #define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
313
314 #undef BITFIELD_NBYTES_LIMITED
315 #define BITFIELD_NBYTES_LIMITED (TARGET_NO_BITFIELD_WORD)
316
317 /* Define this macro to be the value 1 if instructions will fail to
318 work if given data not on the nominal alignment. If instructions
319 will merely go slower in that case, define this macro as 0. */
320 #undef STRICT_ALIGNMENT
321 #define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
322
323 /* Define this macro if you wish to preserve a certain alignment for
324 the stack pointer, greater than what the hardware enforces. The
325 definition is a C expression for the desired alignment (measured
326 in bits). This macro must evaluate to a value equal to or larger
327 than STACK_BOUNDARY.
328 For the SYSV ABI and variants the alignment of the stack pointer
329 is usually controlled manually in rs6000.c. However, to maintain
330 alignment across alloca () in all circumstances,
331 PREFERRED_STACK_BOUNDARY needs to be set as well.
332 This has the additional advantage of allowing a bigger maximum
333 alignment of user objects on the stack. */
334
335 #undef PREFERRED_STACK_BOUNDARY
336 #define PREFERRED_STACK_BOUNDARY 128
337
338 /* Real stack boundary as mandated by the appropriate ABI. */
339 #define ABI_STACK_BOUNDARY \
340 ((TARGET_EABI && !TARGET_ALTIVEC && !TARGET_ALTIVEC_ABI) ? 64 : 128)
341
342 /* An expression for the alignment of a structure field FIELD if the
343 alignment computed in the usual way is COMPUTED. */
344 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
345 ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
346 ? 128 : COMPUTED)
347
348 #undef BIGGEST_FIELD_ALIGNMENT
349
350 /* Use ELF style section commands. */
351
352 #define TEXT_SECTION_ASM_OP "\t.section\t\".text\""
353
354 #define DATA_SECTION_ASM_OP "\t.section\t\".data\""
355
356 #define BSS_SECTION_ASM_OP "\t.section\t\".bss\""
357
358 /* Override elfos.h definition. */
359 #undef INIT_SECTION_ASM_OP
360 #define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
361
362 /* Override elfos.h definition. */
363 #undef FINI_SECTION_ASM_OP
364 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
365
366 #define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
367
368 /* Put PC relative got entries in .got2. */
369 #define MINIMAL_TOC_SECTION_ASM_OP \
370 (TARGET_RELOCATABLE || (flag_pic && DEFAULT_ABI != ABI_AIX) \
371 ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
372
373 #define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
374 #define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
375 #define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
376
377 /* Override default elf definitions. */
378 #define TARGET_ASM_INIT_SECTIONS rs6000_elf_asm_init_sections
379 #undef TARGET_ASM_RELOC_RW_MASK
380 #define TARGET_ASM_RELOC_RW_MASK rs6000_elf_reloc_rw_mask
381 #undef TARGET_ASM_SELECT_RTX_SECTION
382 #define TARGET_ASM_SELECT_RTX_SECTION rs6000_elf_select_rtx_section
383
384 /* Return nonzero if this entry is to be written into the constant pool
385 in a special way. We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
386 containing one of them. If -mfp-in-toc (the default), we also do
387 this for floating-point constants. We actually can only do this
388 if the FP formats of the target and host machines are the same, but
389 we can't check that since not every file that uses
390 GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
391
392 Unlike AIX, we don't key off of -mminimal-toc, but instead do not
393 allow floating point constants in the TOC if -mrelocatable. */
394
395 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
396 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
397 (TARGET_TOC \
398 && (GET_CODE (X) == SYMBOL_REF \
399 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
400 && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
401 || GET_CODE (X) == LABEL_REF \
402 || (GET_CODE (X) == CONST_INT \
403 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
404 || (!TARGET_NO_FP_IN_TOC \
405 && !TARGET_RELOCATABLE \
406 && GET_CODE (X) == CONST_DOUBLE \
407 && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
408 && BITS_PER_WORD == HOST_BITS_PER_INT)))
409
410 /* These macros generate the special .type and .size directives which
411 are used to set the corresponding fields of the linker symbol table
412 entries in an ELF object file under SVR4. These macros also output
413 the starting labels for the relevant functions/objects. */
414
415 /* Write the extra assembler code needed to declare a function properly.
416 Some svr4 assemblers need to also have something extra said about the
417 function's return value. We allow for that here. */
418
419 extern int rs6000_pic_labelno;
420
421 /* Override elfos.h definition. */
422 #undef ASM_DECLARE_FUNCTION_NAME
423 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
424 rs6000_elf_declare_function_name ((FILE), (NAME), (DECL))
425
426 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
427 flag. The LOCAL_LABEL_PREFIX variable is used by dbxelf.h. */
428
429 #define LOCAL_LABEL_PREFIX "."
430 #define USER_LABEL_PREFIX ""
431
432 /* svr4.h overrides (*targetm.asm_out.internal_label). */
433
434 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \
435 asm_fprintf (FILE, "%L%s", PREFIX)
436
437 /* Globalizing directive for a label. */
438 #define GLOBAL_ASM_OP "\t.globl "
439
440 /* This says how to output assembler code to declare an
441 uninitialized internal linkage data object. Under SVR4,
442 the linker seems to want the alignment of data objects
443 to depend on their types. We do exactly that here. */
444
445 #define LOCAL_ASM_OP "\t.local\t"
446
447 #define LCOMM_ASM_OP "\t.lcomm\t"
448
449 /* Describe how to emit uninitialized local items. */
450 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
451 do { \
452 if ((DECL) && rs6000_elf_in_small_data_p (DECL)) \
453 { \
454 switch_to_section (sbss_section); \
455 ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT)); \
456 ASM_OUTPUT_LABEL (FILE, NAME); \
457 ASM_OUTPUT_SKIP (FILE, SIZE); \
458 if (!flag_inhibit_size_directive && (SIZE) > 0) \
459 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
460 } \
461 else \
462 { \
463 fprintf (FILE, "%s", LCOMM_ASM_OP); \
464 assemble_name ((FILE), (NAME)); \
465 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
466 (SIZE), (ALIGN) / BITS_PER_UNIT); \
467 } \
468 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
469 } while (0)
470
471 /* Describe how to emit uninitialized external linkage items. */
472 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
473 do { \
474 ASM_OUTPUT_ALIGNED_DECL_LOCAL (FILE, DECL, NAME, SIZE, ALIGN); \
475 } while (0)
476
477 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
478 /* To support -falign-* switches we need to use .p2align so
479 that alignment directives in code sections will be padded
480 with no-op instructions, rather than zeroes. */
481 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
482 if ((LOG) != 0) \
483 { \
484 if ((MAX_SKIP) == 0) \
485 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
486 else \
487 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
488 }
489 #endif
490
491 /* This is how to output code to push a register on the stack.
492 It need not be very fast code.
493
494 On the rs6000, we must keep the backchain up to date. In order
495 to simplify things, always allocate 16 bytes for a push (System V
496 wants to keep stack aligned to a 16 byte boundary). */
497
498 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \
499 do { \
500 if (DEFAULT_ABI == ABI_V4) \
501 asm_fprintf (FILE, \
502 "\t{stu|stwu} %s,-16(%s)\n\t{st|stw} %s,12(%s)\n", \
503 reg_names[1], reg_names[1], reg_names[REGNO], \
504 reg_names[1]); \
505 } while (0)
506
507 /* This is how to output an insn to pop a register from the stack.
508 It need not be very fast code. */
509
510 #define ASM_OUTPUT_REG_POP(FILE, REGNO) \
511 do { \
512 if (DEFAULT_ABI == ABI_V4) \
513 asm_fprintf (FILE, \
514 "\t{l|lwz} %s,12(%s)\n\t{ai|addic} %s,%s,16\n", \
515 reg_names[REGNO], reg_names[1], reg_names[1], \
516 reg_names[1]); \
517 } while (0)
518
519 /* Switch Recognition by gcc.c. Add -G xx support. */
520
521 /* Override svr4.h definition. */
522 #undef SWITCH_TAKES_ARG
523 #define SWITCH_TAKES_ARG(CHAR) \
524 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
525 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
526 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
527 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
528 || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
529
530 extern int fixuplabelno;
531
532 /* Handle constructors specially for -mrelocatable. */
533 #define TARGET_ASM_CONSTRUCTOR rs6000_elf_asm_out_constructor
534 #define TARGET_ASM_DESTRUCTOR rs6000_elf_asm_out_destructor
535
536 /* This is the end of what might become sysv4.h. */
537
538 /* Use DWARF 2 debugging information by default. */
539 #undef PREFERRED_DEBUGGING_TYPE
540 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
541
542 /* Historically we have also supported stabs debugging. */
543 #define DBX_DEBUGGING_INFO 1
544
545 #define TARGET_ENCODE_SECTION_INFO rs6000_elf_encode_section_info
546 #define TARGET_IN_SMALL_DATA_P rs6000_elf_in_small_data_p
547
548 /* The ELF version doesn't encode [DS] or whatever at the end of symbols. */
549
550 #define RS6000_OUTPUT_BASENAME(FILE, NAME) \
551 assemble_name (FILE, NAME)
552
553 /* We have to output the stabs for the function name *first*, before
554 outputting its label. */
555
556 #define DBX_FUNCTION_FIRST
557
558 /* This is the end of what might become sysv4dbx.h. */
559
560 #ifndef TARGET_VERSION
561 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
562 #endif
563
564 #define TARGET_OS_SYSV_CPP_BUILTINS() \
565 do \
566 { \
567 if (target_flags_explicit \
568 & MASK_RELOCATABLE) \
569 builtin_define ("_RELOCATABLE"); \
570 } \
571 while (0)
572
573 #ifndef TARGET_OS_CPP_BUILTINS
574 #define TARGET_OS_CPP_BUILTINS() \
575 do \
576 { \
577 builtin_define_std ("PPC"); \
578 builtin_define_std ("unix"); \
579 builtin_define ("__svr4__"); \
580 builtin_assert ("system=unix"); \
581 builtin_assert ("system=svr4"); \
582 builtin_assert ("cpu=powerpc"); \
583 builtin_assert ("machine=powerpc"); \
584 TARGET_OS_SYSV_CPP_BUILTINS (); \
585 } \
586 while (0)
587 #endif
588
589 /* Pass various options to the assembler. */
590 /* Override svr4.h definition. */
591 #undef ASM_SPEC
592 #define ASM_SPEC "%(asm_cpu) \
593 %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}" \
594 SVR4_ASM_SPEC \
595 "%{mrelocatable} %{mrelocatable-lib} %{fpic|fpie|fPIC|fPIE:-K PIC} \
596 %{memb|msdata|msdata=eabi: -memb} \
597 %{mlittle|mlittle-endian:-mlittle; \
598 mbig|mbig-endian :-mbig; \
599 mcall-aixdesc | \
600 mcall-freebsd | \
601 mcall-netbsd | \
602 mcall-openbsd | \
603 mcall-linux | \
604 mcall-gnu :-mbig; \
605 mcall-i960-old :-mlittle}"
606
607 #define CC1_ENDIAN_BIG_SPEC ""
608
609 #define CC1_ENDIAN_LITTLE_SPEC "\
610 %{!mstrict-align: %{!mno-strict-align: \
611 %{!mcall-i960-old: \
612 -mstrict-align \
613 } \
614 }}"
615
616 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big)"
617
618 #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
619 #define CC1_SECURE_PLT_DEFAULT_SPEC ""
620 #endif
621
622 /* Pass -G xxx to the compiler and set correct endian mode. */
623 #define CC1_SPEC "%{G*} %(cc1_cpu) \
624 %{mlittle|mlittle-endian: %(cc1_endian_little); \
625 mbig |mbig-endian : %(cc1_endian_big); \
626 mcall-aixdesc | \
627 mcall-freebsd | \
628 mcall-netbsd | \
629 mcall-openbsd | \
630 mcall-linux | \
631 mcall-gnu : -mbig %(cc1_endian_big); \
632 mcall-i960-old : -mlittle %(cc1_endian_little); \
633 : %(cc1_endian_default)} \
634 %{meabi: %{!mcall-*: -mcall-sysv }} \
635 %{!meabi: %{!mno-eabi: \
636 %{mrelocatable: -meabi } \
637 %{mcall-freebsd: -mno-eabi } \
638 %{mcall-i960-old: -meabi } \
639 %{mcall-linux: -mno-eabi } \
640 %{mcall-gnu: -mno-eabi } \
641 %{mcall-netbsd: -mno-eabi } \
642 %{mcall-openbsd: -mno-eabi }}} \
643 %{msdata: -msdata=default} \
644 %{mno-sdata: -msdata=none} \
645 %{!mbss-plt: %{!msecure-plt: %(cc1_secure_plt_default)}} \
646 %{profile: -p}"
647
648 /* Don't put -Y P,<path> for cross compilers. */
649 #ifndef CROSS_DIRECTORY_STRUCTURE
650 #define LINK_PATH_SPEC "\
651 %{!R*:%{L*:-R %*}} \
652 %{!nostdlib: %{!YP,*: \
653 %{compat-bsd: \
654 %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
655 %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
656 %{!R*: %{!L*: -R /usr/ucblib}} \
657 %{!compat-bsd: \
658 %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
659 %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
660
661 #else
662 #define LINK_PATH_SPEC ""
663 #endif
664
665 /* Default starting address if specified. */
666 #define LINK_START_SPEC "\
667 %{mads : %(link_start_ads) ; \
668 myellowknife : %(link_start_yellowknife) ; \
669 mmvme : %(link_start_mvme) ; \
670 msim : %(link_start_sim) ; \
671 mcall-freebsd: %(link_start_freebsd) ; \
672 mcall-linux : %(link_start_linux) ; \
673 mcall-gnu : %(link_start_gnu) ; \
674 mcall-netbsd : %(link_start_netbsd) ; \
675 mcall-openbsd: %(link_start_openbsd) ; \
676 : %(link_start_default) }"
677
678 #define LINK_START_DEFAULT_SPEC ""
679
680 /* Override svr4.h definition. */
681 #undef LINK_SPEC
682 #define LINK_SPEC "\
683 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
684 %{YP,*} %{R*} \
685 %{Qy:} %{!Qn:-Qy} \
686 %(link_shlib) \
687 %{!Wl,-T*: %{!T*: %(link_start) }} \
688 %(link_target) \
689 %(link_os)"
690
691 /* For now, turn off shared libraries by default. */
692 #ifndef SHARED_LIB_SUPPORT
693 #define NO_SHARED_LIB_SUPPORT
694 #endif
695
696 #ifndef NO_SHARED_LIB_SUPPORT
697 /* Shared libraries are default. */
698 #define LINK_SHLIB_SPEC "\
699 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
700 %{mshlib: } \
701 %{static:-dn -Bstatic} \
702 %{shared:-G -dy -z text} \
703 %{symbolic:-Bsymbolic -G -dy -z text}"
704
705 #else
706 /* Shared libraries are not default. */
707 #define LINK_SHLIB_SPEC "\
708 %{mshlib: %(link_path) } \
709 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
710 %{static: } \
711 %{shared:-G -dy -z text %(link_path) } \
712 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
713 #endif
714
715 /* Override the default target of the linker. */
716 #define LINK_TARGET_SPEC "\
717 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
718 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
719 %{mcall-i960-old: --oformat elf32-powerpcle} \
720 }}}}"
721
722 /* Any specific OS flags. */
723 #define LINK_OS_SPEC "\
724 %{mads : %(link_os_ads) ; \
725 myellowknife : %(link_os_yellowknife) ; \
726 mmvme : %(link_os_mvme) ; \
727 msim : %(link_os_sim) ; \
728 mcall-freebsd: %(link_os_freebsd) ; \
729 mcall-linux : %(link_os_linux) ; \
730 mcall-gnu : %(link_os_gnu) ; \
731 mcall-netbsd : %(link_os_netbsd) ; \
732 mcall-openbsd: %(link_os_openbsd) ; \
733 : %(link_os_default) }"
734
735 #define LINK_OS_DEFAULT_SPEC ""
736
737 #define DRIVER_SELF_SPECS "%{mfpu=none: %<mfpu=* \
738 %<msingle-float %<mdouble-float}"
739
740 /* Override rs6000.h definition. */
741 #undef CPP_SPEC
742 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} \
743 %{mads : %(cpp_os_ads) ; \
744 myellowknife : %(cpp_os_yellowknife) ; \
745 mmvme : %(cpp_os_mvme) ; \
746 msim : %(cpp_os_sim) ; \
747 mcall-freebsd: %(cpp_os_freebsd) ; \
748 mcall-linux : %(cpp_os_linux) ; \
749 mcall-gnu : %(cpp_os_gnu) ; \
750 mcall-netbsd : %(cpp_os_netbsd) ; \
751 mcall-openbsd: %(cpp_os_openbsd) ; \
752 : %(cpp_os_default) }"
753
754 #define CPP_OS_DEFAULT_SPEC ""
755
756 /* Override svr4.h definition. */
757 #undef STARTFILE_SPEC
758 #define STARTFILE_SPEC "\
759 %{mads : %(startfile_ads) ; \
760 myellowknife : %(startfile_yellowknife) ; \
761 mmvme : %(startfile_mvme) ; \
762 msim : %(startfile_sim) ; \
763 mcall-freebsd: %(startfile_freebsd) ; \
764 mcall-linux : %(startfile_linux) ; \
765 mcall-gnu : %(startfile_gnu) ; \
766 mcall-netbsd : %(startfile_netbsd) ; \
767 mcall-openbsd: %(startfile_openbsd) ; \
768 : %(startfile_default) }"
769
770 #define STARTFILE_DEFAULT_SPEC "ecrti.o%s crtbegin.o%s"
771
772 /* Override svr4.h definition. */
773 #undef LIB_SPEC
774 #define LIB_SPEC "\
775 %{mads : %(lib_ads) ; \
776 myellowknife : %(lib_yellowknife) ; \
777 mmvme : %(lib_mvme) ; \
778 msim : %(lib_sim) ; \
779 mcall-freebsd: %(lib_freebsd) ; \
780 mcall-linux : %(lib_linux) ; \
781 mcall-gnu : %(lib_gnu) ; \
782 mcall-netbsd : %(lib_netbsd) ; \
783 mcall-openbsd: %(lib_openbsd) ; \
784 : %(lib_default) }"
785
786 #define LIB_DEFAULT_SPEC "-lc"
787
788 /* Override svr4.h definition. */
789 #undef ENDFILE_SPEC
790 #define ENDFILE_SPEC "\
791 %{mads : %(endfile_ads) ; \
792 myellowknife : %(endfile_yellowknife) ; \
793 mmvme : %(endfile_mvme) ; \
794 msim : %(endfile_sim) ; \
795 mcall-freebsd: %(endfile_freebsd) ; \
796 mcall-linux : %(endfile_linux) ; \
797 mcall-gnu : %(endfile_gnu) ; \
798 mcall-netbsd : %(endfile_netbsd) ; \
799 mcall-openbsd: %(endfile_openbsd) ; \
800 : %(crtsavres_default) %(endfile_default) }"
801
802 #define CRTSAVRES_DEFAULT_SPEC ""
803
804 #define ENDFILE_DEFAULT_SPEC "crtend.o%s ecrtn.o%s"
805
806 /* Motorola ADS support. */
807 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
808
809 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
810
811 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
812
813 #define LINK_START_ADS_SPEC "-T ads.ld%s"
814
815 #define LINK_OS_ADS_SPEC ""
816
817 #define CPP_OS_ADS_SPEC ""
818
819 /* Motorola Yellowknife support. */
820 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
821
822 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
823
824 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
825
826 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
827
828 #define LINK_OS_YELLOWKNIFE_SPEC ""
829
830 #define CPP_OS_YELLOWKNIFE_SPEC ""
831
832 /* Motorola MVME support. */
833 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
834
835 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
836
837 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
838
839 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
840
841 #define LINK_OS_MVME_SPEC ""
842
843 #define CPP_OS_MVME_SPEC ""
844
845 /* PowerPC simulator based on netbsd system calls support. */
846 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
847
848 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
849
850 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
851
852 #define LINK_START_SIM_SPEC ""
853
854 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
855
856 #define CPP_OS_SIM_SPEC ""
857
858 /* FreeBSD support. */
859
860 #define CPP_OS_FREEBSD_SPEC "\
861 -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
862 -Acpu=powerpc -Amachine=powerpc"
863
864 #define STARTFILE_FREEBSD_SPEC FBSD_STARTFILE_SPEC
865 #define ENDFILE_FREEBSD_SPEC FBSD_ENDFILE_SPEC
866 #define LIB_FREEBSD_SPEC FBSD_LIB_SPEC
867 #define LINK_START_FREEBSD_SPEC ""
868
869 #define LINK_OS_FREEBSD_SPEC "\
870 %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \
871 %{v:-V} \
872 %{assert*} %{R*} %{rpath*} %{defsym*} \
873 %{shared:-Bshareable %{h*} %{soname*}} \
874 %{!shared: \
875 %{!static: \
876 %{rdynamic: -export-dynamic} \
877 %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
878 %{static:-Bstatic}} \
879 %{symbolic:-Bsymbolic}"
880
881 /* GNU/Linux support. */
882 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
883 %{!mnewlib: %{pthread:-lpthread} %{shared:-lc} \
884 %{!shared: %{profile:-lc_p} %{!profile:-lc}}}"
885
886 #ifdef HAVE_LD_PIE
887 #define STARTFILE_LINUX_SPEC "\
888 %{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
889 %{mnewlib:ecrti.o%s;:crti.o%s} \
890 %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
891 #else
892 #define STARTFILE_LINUX_SPEC "\
893 %{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \
894 %{mnewlib:ecrti.o%s;:crti.o%s} \
895 %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
896 #endif
897
898 #define ENDFILE_LINUX_SPEC "\
899 %{shared|pie:crtendS.o%s;:crtend.o%s} \
900 %{mnewlib:ecrtn.o%s;:crtn.o%s}"
901
902 #define LINK_START_LINUX_SPEC ""
903
904 #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
905 #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
906 #if UCLIBC_DEFAULT
907 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"
908 #else
909 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"
910 #endif
911 #define LINUX_DYNAMIC_LINKER \
912 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
913
914 #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
915 %{rdynamic:-export-dynamic} \
916 %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}}}"
917
918 #if defined(HAVE_LD_EH_FRAME_HDR)
919 # define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
920 #endif
921
922 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
923 %{!undef: \
924 %{!ansi: \
925 %{!std=*:-Dunix -D__unix -Dlinux -D__linux} \
926 %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}} \
927 -Asystem=linux -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
928
929 /* GNU/Hurd support. */
930 #define LIB_GNU_SPEC "%{mnewlib: --start-group -lgnu -lc --end-group } \
931 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
932 %{profile:-lc_p} %{!profile:-lc}}}"
933
934 #define STARTFILE_GNU_SPEC "\
935 %{!shared: %{!static: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}} \
936 %{static: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
937 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
938 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
939
940 #define ENDFILE_GNU_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
941 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
942
943 #define LINK_START_GNU_SPEC ""
944
945 #define LINK_OS_GNU_SPEC "-m elf32ppclinux %{!shared: %{!static: \
946 %{rdynamic:-export-dynamic} \
947 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
948
949 #define CPP_OS_GNU_SPEC "-D__unix__ -D__gnu_hurd__ -D__GNU__ \
950 %{!undef: \
951 %{!ansi: -Dunix -D__unix}} \
952 -Asystem=gnu -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
953
954 /* NetBSD support. */
955 #define LIB_NETBSD_SPEC "\
956 %{profile:-lgmon -lc_p} %{!profile:-lc}"
957
958 #define STARTFILE_NETBSD_SPEC "\
959 ncrti.o%s crt0.o%s \
960 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
961
962 #define ENDFILE_NETBSD_SPEC "\
963 %{!shared:crtend.o%s} %{shared:crtendS.o%s} \
964 ncrtn.o%s"
965
966 #define LINK_START_NETBSD_SPEC "\
967 "
968
969 #define LINK_OS_NETBSD_SPEC "\
970 %{!shared: %{!static: \
971 %{rdynamic:-export-dynamic} \
972 %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
973
974 #define CPP_OS_NETBSD_SPEC "\
975 -D__powerpc__ -D__NetBSD__ -D__KPRINTF_ATTRIBUTE__"
976
977 /* OpenBSD support. */
978 #ifndef LIB_OPENBSD_SPEC
979 #define LIB_OPENBSD_SPEC "%{!shared:%{pthread:-lpthread%{p:_p}%{!p:%{pg:_p}}}} %{!shared:-lc%{p:_p}%{!p:%{pg:_p}}}"
980 #endif
981
982 #ifndef STARTFILE_OPENBSD_SPEC
983 #define STARTFILE_OPENBSD_SPEC "\
984 %{!shared: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
985 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
986 #endif
987
988 #ifndef ENDFILE_OPENBSD_SPEC
989 #define ENDFILE_OPENBSD_SPEC "\
990 %{!shared:crtend.o%s} %{shared:crtendS.o%s}"
991 #endif
992
993 #ifndef LINK_START_OPENBSD_SPEC
994 #define LINK_START_OPENBSD_SPEC "-Ttext 0x400074"
995 #endif
996
997 #ifndef LINK_OS_OPENBSD_SPEC
998 #define LINK_OS_OPENBSD_SPEC ""
999 #endif
1000
1001 #ifndef CPP_OS_OPENBSD_SPEC
1002 #define CPP_OS_OPENBSD_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_POSIX_THREADS}"
1003 #endif
1004
1005 /* Define any extra SPECS that the compiler needs to generate. */
1006 /* Override rs6000.h definition. */
1007 #undef SUBTARGET_EXTRA_SPECS
1008 #define SUBTARGET_EXTRA_SPECS \
1009 { "crtsavres_default", CRTSAVRES_DEFAULT_SPEC }, \
1010 { "lib_ads", LIB_ADS_SPEC }, \
1011 { "lib_yellowknife", LIB_YELLOWKNIFE_SPEC }, \
1012 { "lib_mvme", LIB_MVME_SPEC }, \
1013 { "lib_sim", LIB_SIM_SPEC }, \
1014 { "lib_freebsd", LIB_FREEBSD_SPEC }, \
1015 { "lib_gnu", LIB_GNU_SPEC }, \
1016 { "lib_linux", LIB_LINUX_SPEC }, \
1017 { "lib_netbsd", LIB_NETBSD_SPEC }, \
1018 { "lib_openbsd", LIB_OPENBSD_SPEC }, \
1019 { "lib_default", LIB_DEFAULT_SPEC }, \
1020 { "startfile_ads", STARTFILE_ADS_SPEC }, \
1021 { "startfile_yellowknife", STARTFILE_YELLOWKNIFE_SPEC }, \
1022 { "startfile_mvme", STARTFILE_MVME_SPEC }, \
1023 { "startfile_sim", STARTFILE_SIM_SPEC }, \
1024 { "startfile_freebsd", STARTFILE_FREEBSD_SPEC }, \
1025 { "startfile_gnu", STARTFILE_GNU_SPEC }, \
1026 { "startfile_linux", STARTFILE_LINUX_SPEC }, \
1027 { "startfile_netbsd", STARTFILE_NETBSD_SPEC }, \
1028 { "startfile_openbsd", STARTFILE_OPENBSD_SPEC }, \
1029 { "startfile_default", STARTFILE_DEFAULT_SPEC }, \
1030 { "endfile_ads", ENDFILE_ADS_SPEC }, \
1031 { "endfile_yellowknife", ENDFILE_YELLOWKNIFE_SPEC }, \
1032 { "endfile_mvme", ENDFILE_MVME_SPEC }, \
1033 { "endfile_sim", ENDFILE_SIM_SPEC }, \
1034 { "endfile_freebsd", ENDFILE_FREEBSD_SPEC }, \
1035 { "endfile_gnu", ENDFILE_GNU_SPEC }, \
1036 { "endfile_linux", ENDFILE_LINUX_SPEC }, \
1037 { "endfile_netbsd", ENDFILE_NETBSD_SPEC }, \
1038 { "endfile_openbsd", ENDFILE_OPENBSD_SPEC }, \
1039 { "endfile_default", ENDFILE_DEFAULT_SPEC }, \
1040 { "link_path", LINK_PATH_SPEC }, \
1041 { "link_shlib", LINK_SHLIB_SPEC }, \
1042 { "link_target", LINK_TARGET_SPEC }, \
1043 { "link_start", LINK_START_SPEC }, \
1044 { "link_start_ads", LINK_START_ADS_SPEC }, \
1045 { "link_start_yellowknife", LINK_START_YELLOWKNIFE_SPEC }, \
1046 { "link_start_mvme", LINK_START_MVME_SPEC }, \
1047 { "link_start_sim", LINK_START_SIM_SPEC }, \
1048 { "link_start_freebsd", LINK_START_FREEBSD_SPEC }, \
1049 { "link_start_gnu", LINK_START_GNU_SPEC }, \
1050 { "link_start_linux", LINK_START_LINUX_SPEC }, \
1051 { "link_start_netbsd", LINK_START_NETBSD_SPEC }, \
1052 { "link_start_openbsd", LINK_START_OPENBSD_SPEC }, \
1053 { "link_start_default", LINK_START_DEFAULT_SPEC }, \
1054 { "link_os", LINK_OS_SPEC }, \
1055 { "link_os_ads", LINK_OS_ADS_SPEC }, \
1056 { "link_os_yellowknife", LINK_OS_YELLOWKNIFE_SPEC }, \
1057 { "link_os_mvme", LINK_OS_MVME_SPEC }, \
1058 { "link_os_sim", LINK_OS_SIM_SPEC }, \
1059 { "link_os_freebsd", LINK_OS_FREEBSD_SPEC }, \
1060 { "link_os_linux", LINK_OS_LINUX_SPEC }, \
1061 { "link_os_gnu", LINK_OS_GNU_SPEC }, \
1062 { "link_os_netbsd", LINK_OS_NETBSD_SPEC }, \
1063 { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
1064 { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
1065 { "cc1_endian_big", CC1_ENDIAN_BIG_SPEC }, \
1066 { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
1067 { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
1068 { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
1069 { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
1070 { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
1071 { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
1072 { "cpp_os_sim", CPP_OS_SIM_SPEC }, \
1073 { "cpp_os_freebsd", CPP_OS_FREEBSD_SPEC }, \
1074 { "cpp_os_gnu", CPP_OS_GNU_SPEC }, \
1075 { "cpp_os_linux", CPP_OS_LINUX_SPEC }, \
1076 { "cpp_os_netbsd", CPP_OS_NETBSD_SPEC }, \
1077 { "cpp_os_openbsd", CPP_OS_OPENBSD_SPEC }, \
1078 { "cpp_os_default", CPP_OS_DEFAULT_SPEC }, \
1079 { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }, \
1080 SUBSUBTARGET_EXTRA_SPECS
1081
1082 #define SUBSUBTARGET_EXTRA_SPECS
1083
1084 /* Define this macro as a C expression for the initializer of an
1085 array of string to tell the driver program which options are
1086 defaults for this target and thus do not need to be handled
1087 specially when using `MULTILIB_OPTIONS'.
1088
1089 Do not define this macro if `MULTILIB_OPTIONS' is not defined in
1090 the target makefile fragment or if none of the options listed in
1091 `MULTILIB_OPTIONS' are set by default. *Note Target Fragment::. */
1092
1093 #define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
1094
1095 /* Define this macro if the code for function profiling should come
1096 before the function prologue. Normally, the profiling code comes
1097 after. */
1098 #define PROFILE_BEFORE_PROLOGUE 1
1099
1100 /* Function name to call to do profiling. */
1101 #define RS6000_MCOUNT "_mcount"
1102
1103 /* Define this macro (to a value of 1) if you want to support the
1104 Win32 style pragmas #pragma pack(push,<n>)' and #pragma
1105 pack(pop)'. The pack(push,<n>) pragma specifies the maximum
1106 alignment (in bytes) of fields within a structure, in much the
1107 same way as the __aligned__' and __packed__' __attribute__'s
1108 do. A pack value of zero resets the behavior to the default.
1109 Successive invocations of this pragma cause the previous values to
1110 be stacked, so that invocations of #pragma pack(pop)' will return
1111 to the previous value. */
1112
1113 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
1114
1115 /* Select a format to encode pointers in exception handling data. CODE
1116 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
1117 true if the symbol may be affected by dynamic relocations. */
1118 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
1119 ((flag_pic || TARGET_RELOCATABLE) \
1120 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1121 : DW_EH_PE_absptr)
1122
1123 #define DOUBLE_INT_ASM_OP "\t.quad\t"
1124
1125 /* Generate entries in .fixup for relocatable addresses. */
1126 #define RELOCATABLE_NEEDS_FIXUP 1
1127
1128 /* This target uses the sysv4.opt file. */
1129 #define TARGET_USES_SYSV4_OPT 1