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[netbsd-mini2440.git] / gnu / dist / gcc4 / gcc / config / rs6000 / sysv4.h
blobd346e7fac77ca8fd96b18ebd3e9519cc9c4b2693
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 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, 51 Franklin Street, Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 /* Header files should be C++ aware in general. */
24 #undef NO_IMPLICIT_EXTERN_C
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 #define TARGET_TOC ((target_flags & MASK_64BIT) \
51 || ((target_flags & (MASK_RELOCATABLE \
52 | MASK_MINIMAL_TOC)) \
53 && flag_pic > 1) \
54 || DEFAULT_ABI == ABI_AIX)
55
56 #define TARGET_BITFIELD_TYPE (! TARGET_NO_BITFIELD_TYPE)
57 #define TARGET_BIG_ENDIAN (! TARGET_LITTLE_ENDIAN)
58 #define TARGET_NO_PROTOTYPE (! TARGET_PROTOTYPE)
59 #define TARGET_NO_TOC (! TARGET_TOC)
60 #define TARGET_NO_EABI (! TARGET_EABI)
61
62 #ifdef HAVE_AS_REL16
63 #undef TARGET_SECURE_PLT
64 #define TARGET_SECURE_PLT secure_plt
65 #endif
66
67 extern const char *rs6000_abi_name;
68 extern const char *rs6000_sdata_name;
69 extern const char *rs6000_tls_size_string; /* For -mtls-size= */
70
71 #define SDATA_DEFAULT_SIZE 8
72
73 /* Sometimes certain combinations of command options do not make sense
74 on a particular target machine. You can define a macro
75 `OVERRIDE_OPTIONS' to take account of this. This macro, if
76 defined, is executed once just after all the command options have
77 been parsed.
78
79 The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
80 get control. */
81
82 #define SUBTARGET_OVERRIDE_OPTIONS \
83 do { \
84 if (!g_switch_set) \
85 g_switch_value = SDATA_DEFAULT_SIZE; \
86 \
87 if (rs6000_abi_name == NULL) \
88 rs6000_abi_name = RS6000_ABI_NAME; \
89 \
90 if (!strcmp (rs6000_abi_name, "sysv")) \
91 rs6000_current_abi = ABI_V4; \
92 else if (!strcmp (rs6000_abi_name, "sysv-noeabi")) \
93 { \
94 rs6000_current_abi = ABI_V4; \
95 target_flags &= ~ MASK_EABI; \
96 } \
97 else if (!strcmp (rs6000_abi_name, "sysv-eabi") \
98 || !strcmp (rs6000_abi_name, "eabi")) \
99 { \
100 rs6000_current_abi = ABI_V4; \
101 target_flags |= MASK_EABI; \
102 } \
103 else if (!strcmp (rs6000_abi_name, "aixdesc")) \
104 rs6000_current_abi = ABI_AIX; \
105 else if (!strcmp (rs6000_abi_name, "freebsd")) \
106 rs6000_current_abi = ABI_V4; \
107 else if (!strcmp (rs6000_abi_name, "linux")) \
108 { \
109 if (TARGET_64BIT) \
110 rs6000_current_abi = ABI_AIX; \
111 else \
112 rs6000_current_abi = ABI_V4; \
113 } \
114 else if (!strcmp (rs6000_abi_name, "gnu")) \
115 rs6000_current_abi = ABI_V4; \
116 else if (!strcmp (rs6000_abi_name, "netbsd")) \
117 { \
118 if (TARGET_64BIT) \
119 rs6000_current_abi = ABI_AIX; \
120 else \
121 rs6000_current_abi = ABI_V4; \
122 } \
123 else if (!strcmp (rs6000_abi_name, "openbsd")) \
124 rs6000_current_abi = ABI_V4; \
125 else if (!strcmp (rs6000_abi_name, "i960-old")) \
126 { \
127 rs6000_current_abi = ABI_V4; \
128 target_flags |= (MASK_LITTLE_ENDIAN | MASK_EABI \
129 | MASK_NO_BITFIELD_WORD); \
130 target_flags &= ~MASK_STRICT_ALIGN; \
131 } \
132 else \
133 { \
134 rs6000_current_abi = ABI_V4; \
135 error ("bad value for -mcall-%s", rs6000_abi_name); \
136 } \
137 \
138 if (rs6000_sdata_name) \
139 { \
140 if (!strcmp (rs6000_sdata_name, "none")) \
141 rs6000_sdata = SDATA_NONE; \
142 else if (!strcmp (rs6000_sdata_name, "data")) \
143 rs6000_sdata = SDATA_DATA; \
144 else if (!strcmp (rs6000_sdata_name, "default")) \
145 rs6000_sdata = (TARGET_EABI) ? SDATA_EABI : SDATA_SYSV; \
146 else if (!strcmp (rs6000_sdata_name, "sysv")) \
147 rs6000_sdata = SDATA_SYSV; \
148 else if (!strcmp (rs6000_sdata_name, "eabi")) \
149 rs6000_sdata = SDATA_EABI; \
150 else \
151 error ("bad value for -msdata=%s", rs6000_sdata_name); \
152 } \
153 else if (DEFAULT_ABI == ABI_V4) \
154 { \
155 rs6000_sdata = SDATA_DATA; \
156 rs6000_sdata_name = "data"; \
157 } \
158 else \
159 { \
160 rs6000_sdata = SDATA_NONE; \
161 rs6000_sdata_name = "none"; \
162 } \
163 \
164 if (TARGET_RELOCATABLE && \
165 (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV)) \
166 { \
167 rs6000_sdata = SDATA_DATA; \
168 error ("-mrelocatable and -msdata=%s are incompatible", \
169 rs6000_sdata_name); \
170 } \
171 \
172 else if (flag_pic && DEFAULT_ABI != ABI_AIX \
173 && (rs6000_sdata == SDATA_EABI \
174 || rs6000_sdata == SDATA_SYSV)) \
175 { \
176 rs6000_sdata = SDATA_DATA; \
177 error ("-f%s and -msdata=%s are incompatible", \
178 (flag_pic > 1) ? "PIC" : "pic", \
179 rs6000_sdata_name); \
180 } \
181 \
182 if ((rs6000_sdata != SDATA_NONE && DEFAULT_ABI != ABI_V4) \
183 || (rs6000_sdata == SDATA_EABI && !TARGET_EABI)) \
184 { \
185 rs6000_sdata = SDATA_NONE; \
186 error ("-msdata=%s and -mcall-%s are incompatible", \
187 rs6000_sdata_name, rs6000_abi_name); \
188 } \
189 \
190 targetm.have_srodata_section = rs6000_sdata == SDATA_EABI; \
191 \
192 if (TARGET_RELOCATABLE && !TARGET_MINIMAL_TOC) \
193 { \
194 target_flags |= MASK_MINIMAL_TOC; \
195 error ("-mrelocatable and -mno-minimal-toc are incompatible"); \
196 } \
197 \
198 if (TARGET_RELOCATABLE && rs6000_current_abi == ABI_AIX) \
199 { \
200 target_flags &= ~MASK_RELOCATABLE; \
201 error ("-mrelocatable and -mcall-%s are incompatible", \
202 rs6000_abi_name); \
203 } \
204 \
205 if (!TARGET_64BIT && flag_pic > 1 && rs6000_current_abi == ABI_AIX) \
206 { \
207 flag_pic = 0; \
208 error ("-fPIC and -mcall-%s are incompatible", \
209 rs6000_abi_name); \
210 } \
211 \
212 if (rs6000_current_abi == ABI_AIX && TARGET_LITTLE_ENDIAN) \
213 { \
214 target_flags &= ~MASK_LITTLE_ENDIAN; \
215 error ("-mcall-aixdesc must be big endian"); \
216 } \
217 \
218 if (TARGET_SECURE_PLT != secure_plt) \
219 { \
220 error ("-msecure-plt not supported by your assembler"); \
221 } \
222 \
223 if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128 \
224 && rs6000_explicit_options.long_double) \
225 warning (0, "-msoft-float and -mlong-double-128 not supported"); \
226 \
227 /* Treat -fPIC the same as -mrelocatable. */ \
228 if (flag_pic > 1 && DEFAULT_ABI != ABI_AIX) \
229 target_flags |= MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC; \
230 \
231 else if (TARGET_RELOCATABLE) \
232 flag_pic = 2; \
233 } while (0)
234
235 #ifndef RS6000_BI_ARCH
236 # define SUBSUBTARGET_OVERRIDE_OPTIONS \
237 do { \
238 if ((TARGET_DEFAULT ^ target_flags) & MASK_64BIT) \
239 error ("-m%s not supported in this configuration", \
240 (target_flags & MASK_64BIT) ? "64" : "32"); \
241 } while (0)
242 #endif
243
244 /* Override rs6000.h definition. */
245 #undef TARGET_DEFAULT
246 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
247
248 /* Override rs6000.h definition. */
249 #undef PROCESSOR_DEFAULT
250 #define PROCESSOR_DEFAULT PROCESSOR_PPC750
251
252 /* SVR4 only defined for PowerPC, so short-circuit POWER patterns. */
253 #undef TARGET_POWER
254 #define TARGET_POWER 0
255
256 #define FIXED_R2 1
257 /* System V.4 uses register 13 as a pointer to the small data area,
258 so it is not available to the normal user. */
259 #define FIXED_R13 1
260
261 /* Override default big endianism definitions in rs6000.h. */
262 #undef BYTES_BIG_ENDIAN
263 #undef WORDS_BIG_ENDIAN
264 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
265 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
266
267 /* Define this to set the endianness to use in libgcc2.c, which can
268 not depend on target_flags. */
269 #if !defined(__LITTLE_ENDIAN__) && !defined(__sun__)
270 #define LIBGCC2_WORDS_BIG_ENDIAN 1
271 #else
272 #define LIBGCC2_WORDS_BIG_ENDIAN 0
273 #endif
274
275 /* Define cutoff for using external functions to save floating point.
276 Currently on V.4, always use inline stores. */
277 #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
278
279 /* Put jump tables in read-only memory, rather than in .text. */
280 #define JUMP_TABLES_IN_TEXT_SECTION 0
281
282 /* Prefix and suffix to use to saving floating point. */
283 #define SAVE_FP_PREFIX "_savefpr_"
284 #define SAVE_FP_SUFFIX "_l"
285
286 /* Prefix and suffix to use to restoring floating point. */
287 #define RESTORE_FP_PREFIX "_restfpr_"
288 #define RESTORE_FP_SUFFIX "_l"
289
290 /* Type used for ptrdiff_t, as a string used in a declaration. */
291 #define PTRDIFF_TYPE "int"
292
293 /* Type used for wchar_t, as a string used in a declaration. */
294 /* Override svr4.h definition. */
295 #undef WCHAR_TYPE
296 #define WCHAR_TYPE "long int"
297
298 /* Width of wchar_t in bits. */
299 /* Override svr4.h definition. */
300 #undef WCHAR_TYPE_SIZE
301 #define WCHAR_TYPE_SIZE 32
302
303 /* Make int foo : 8 not cause structures to be aligned to an int boundary. */
304 /* Override elfos.h definition. */
305 #undef PCC_BITFIELD_TYPE_MATTERS
306 #define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
307
308 #undef BITFIELD_NBYTES_LIMITED
309 #define BITFIELD_NBYTES_LIMITED (TARGET_NO_BITFIELD_WORD)
310
311 /* Define this macro to be the value 1 if instructions will fail to
312 work if given data not on the nominal alignment. If instructions
313 will merely go slower in that case, define this macro as 0. */
314 #undef STRICT_ALIGNMENT
315 #define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
316
317 /* Define this macro if you wish to preserve a certain alignment for
318 the stack pointer, greater than what the hardware enforces. The
319 definition is a C expression for the desired alignment (measured
320 in bits). This macro must evaluate to a value equal to or larger
321 than STACK_BOUNDARY.
322 For the SYSV ABI and variants the alignment of the stack pointer
323 is usually controlled manually in rs6000.c. However, to maintain
324 alignment across alloca () in all circumstances,
325 PREFERRED_STACK_BOUNDARY needs to be set as well.
326 This has the additional advantage of allowing a bigger maximum
327 alignment of user objects on the stack. */
328
329 #undef PREFERRED_STACK_BOUNDARY
330 #define PREFERRED_STACK_BOUNDARY 128
331
332 /* Real stack boundary as mandated by the appropriate ABI. */
333 #define ABI_STACK_BOUNDARY \
334 ((TARGET_EABI && !TARGET_ALTIVEC && !TARGET_ALTIVEC_ABI) ? 64 : 128)
335
336 /* An expression for the alignment of a structure field FIELD if the
337 alignment computed in the usual way is COMPUTED. */
338 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
339 ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
340 ? 128 : COMPUTED)
341
342 #undef BIGGEST_FIELD_ALIGNMENT
343
344 /* Use ELF style section commands. */
345
346 #define TEXT_SECTION_ASM_OP "\t.section\t\".text\""
347
348 #define DATA_SECTION_ASM_OP "\t.section\t\".data\""
349
350 #define BSS_SECTION_ASM_OP "\t.section\t\".bss\""
351
352 /* Override elfos.h definition. */
353 #undef INIT_SECTION_ASM_OP
354 #define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
355
356 /* Override elfos.h definition. */
357 #undef FINI_SECTION_ASM_OP
358 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
359
360 #define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
361
362 /* Put PC relative got entries in .got2. */
363 #define MINIMAL_TOC_SECTION_ASM_OP \
364 (TARGET_RELOCATABLE || (flag_pic && DEFAULT_ABI != ABI_AIX) \
365 ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
366
367 #define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
368 #define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
369 #define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
370
371 /* Besides the usual ELF sections, we need a toc section. */
372 /* Override elfos.h definition. */
373 #undef EXTRA_SECTIONS
374 #define EXTRA_SECTIONS in_toc, in_sdata, in_sdata2, in_sbss, in_init, in_fini
375
376 /* Override elfos.h definition. */
377 #undef EXTRA_SECTION_FUNCTIONS
378 #define EXTRA_SECTION_FUNCTIONS \
379 TOC_SECTION_FUNCTION \
380 SDATA_SECTION_FUNCTION \
381 SDATA2_SECTION_FUNCTION \
382 SBSS_SECTION_FUNCTION \
383 INIT_SECTION_FUNCTION \
384 FINI_SECTION_FUNCTION
385
386 #define TOC_SECTION_FUNCTION \
387 void \
388 toc_section (void) \
389 { \
390 if (in_section != in_toc) \
391 { \
392 in_section = in_toc; \
393 if (DEFAULT_ABI == ABI_AIX \
394 && TARGET_MINIMAL_TOC \
395 && !TARGET_RELOCATABLE) \
396 { \
397 if (! toc_initialized) \
398 { \
399 toc_initialized = 1; \
400 fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
401 (*targetm.asm_out.internal_label) (asm_out_file, "LCTOC", 0); \
402 fprintf (asm_out_file, "\t.tc "); \
403 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1[TC],"); \
404 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
405 fprintf (asm_out_file, "\n"); \
406 \
407 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
408 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
409 fprintf (asm_out_file, " = .+32768\n"); \
410 } \
411 else \
412 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
413 } \
414 else if (DEFAULT_ABI == ABI_AIX && !TARGET_RELOCATABLE) \
415 fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP); \
416 else \
417 { \
418 fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
419 if (! toc_initialized) \
420 { \
421 ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
422 fprintf (asm_out_file, " = .+32768\n"); \
423 toc_initialized = 1; \
424 } \
425 } \
426 } \
427 } \
428 \
429 extern int in_toc_section (void); \
430 int in_toc_section (void) \
431 { \
432 return in_section == in_toc; \
433 }
434
435 #define SDATA_SECTION_FUNCTION \
436 void \
437 sdata_section (void) \
438 { \
439 if (in_section != in_sdata) \
440 { \
441 in_section = in_sdata; \
442 fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
443 } \
444 }
445
446 #define SDATA2_SECTION_FUNCTION \
447 void \
448 sdata2_section (void) \
449 { \
450 if (in_section != in_sdata2) \
451 { \
452 in_section = in_sdata2; \
453 fprintf (asm_out_file, "%s\n", SDATA2_SECTION_ASM_OP); \
454 } \
455 }
456
457 #define SBSS_SECTION_FUNCTION \
458 void \
459 sbss_section (void) \
460 { \
461 if (in_section != in_sbss) \
462 { \
463 in_section = in_sbss; \
464 fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP); \
465 } \
466 }
467
468 #define INIT_SECTION_FUNCTION \
469 void \
470 init_section (void) \
471 { \
472 if (in_section != in_init) \
473 { \
474 in_section = in_init; \
475 fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP); \
476 } \
477 }
478
479 #define FINI_SECTION_FUNCTION \
480 void \
481 fini_section (void) \
482 { \
483 if (in_section != in_fini) \
484 { \
485 in_section = in_fini; \
486 fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP); \
487 } \
488 }
489
490 /* Override default elf definitions. */
491 #undef TARGET_ASM_SELECT_RTX_SECTION
492 #define TARGET_ASM_SELECT_RTX_SECTION rs6000_elf_select_rtx_section
493 #undef TARGET_ASM_SELECT_SECTION
494 #define TARGET_ASM_SELECT_SECTION rs6000_elf_select_section
495 #define TARGET_ASM_UNIQUE_SECTION rs6000_elf_unique_section
496
497 /* Return nonzero if this entry is to be written into the constant pool
498 in a special way. We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
499 containing one of them. If -mfp-in-toc (the default), we also do
500 this for floating-point constants. We actually can only do this
501 if the FP formats of the target and host machines are the same, but
502 we can't check that since not every file that uses
503 GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
504
505 Unlike AIX, we don't key off of -mminimal-toc, but instead do not
506 allow floating point constants in the TOC if -mrelocatable. */
507
508 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
509 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
510 (TARGET_TOC \
511 && (GET_CODE (X) == SYMBOL_REF \
512 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
513 && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
514 || GET_CODE (X) == LABEL_REF \
515 || (GET_CODE (X) == CONST_INT \
516 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
517 || (!TARGET_NO_FP_IN_TOC \
518 && !TARGET_RELOCATABLE \
519 && GET_CODE (X) == CONST_DOUBLE \
520 && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
521 && BITS_PER_WORD == HOST_BITS_PER_INT)))
522
523 /* These macros generate the special .type and .size directives which
524 are used to set the corresponding fields of the linker symbol table
525 entries in an ELF object file under SVR4. These macros also output
526 the starting labels for the relevant functions/objects. */
527
528 /* Write the extra assembler code needed to declare a function properly.
529 Some svr4 assemblers need to also have something extra said about the
530 function's return value. We allow for that here. */
531
532 extern int rs6000_pic_labelno;
533
534 /* Override elfos.h definition. */
535 #undef ASM_DECLARE_FUNCTION_NAME
536 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
537 rs6000_elf_declare_function_name ((FILE), (NAME), (DECL))
538
539 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
540 flag. The LOCAL_LABEL_PREFIX variable is used by dbxelf.h. */
541
542 #define LOCAL_LABEL_PREFIX "."
543 #define USER_LABEL_PREFIX ""
544
545 /* svr4.h overrides (*targetm.asm_out.internal_label). */
546
547 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \
548 asm_fprintf (FILE, "%L%s", PREFIX)
549
550 /* Globalizing directive for a label. */
551 #define GLOBAL_ASM_OP "\t.globl "
552
553 /* This says how to output assembler code to declare an
554 uninitialized internal linkage data object. Under SVR4,
555 the linker seems to want the alignment of data objects
556 to depend on their types. We do exactly that here. */
557
558 #define LOCAL_ASM_OP "\t.local\t"
559
560 #define LCOMM_ASM_OP "\t.lcomm\t"
561
562 /* Override elfos.h definition. */
563 #undef ASM_OUTPUT_ALIGNED_LOCAL
564 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
565 do { \
566 if (rs6000_sdata != SDATA_NONE && (SIZE) > 0 \
567 && (SIZE) <= g_switch_value) \
568 { \
569 sbss_section (); \
570 ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT)); \
571 ASM_OUTPUT_LABEL (FILE, NAME); \
572 ASM_OUTPUT_SKIP (FILE, SIZE); \
573 if (!flag_inhibit_size_directive && (SIZE) > 0) \
574 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
575 } \
576 else \
577 { \
578 fprintf (FILE, "%s", LCOMM_ASM_OP); \
579 assemble_name ((FILE), (NAME)); \
580 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
581 (SIZE), (ALIGN) / BITS_PER_UNIT); \
582 } \
583 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
584 } while (0)
585
586 /* Describe how to emit uninitialized external linkage items. */
587 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
588 do { \
589 ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \
590 } while (0)
591
592 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
593 /* To support -falign-* switches we need to use .p2align so
594 that alignment directives in code sections will be padded
595 with no-op instructions, rather than zeroes. */
596 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
597 if ((LOG) != 0) \
598 { \
599 if ((MAX_SKIP) == 0) \
600 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
601 else \
602 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
603 }
604 #endif
605
606 /* This is how to output code to push a register on the stack.
607 It need not be very fast code.
608
609 On the rs6000, we must keep the backchain up to date. In order
610 to simplify things, always allocate 16 bytes for a push (System V
611 wants to keep stack aligned to a 16 byte boundary). */
612
613 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \
614 do { \
615 if (DEFAULT_ABI == ABI_V4) \
616 asm_fprintf (FILE, \
617 "\t{stu|stwu} %s,-16(%s)\n\t{st|stw} %s,12(%s)\n", \
618 reg_names[1], reg_names[1], reg_names[REGNO], \
619 reg_names[1]); \
620 } while (0)
621
622 /* This is how to output an insn to pop a register from the stack.
623 It need not be very fast code. */
624
625 #define ASM_OUTPUT_REG_POP(FILE, REGNO) \
626 do { \
627 if (DEFAULT_ABI == ABI_V4) \
628 asm_fprintf (FILE, \
629 "\t{l|lwz} %s,12(%s)\n\t{ai|addic} %s,%s,16\n", \
630 reg_names[REGNO], reg_names[1], reg_names[1], \
631 reg_names[1]); \
632 } while (0)
633
634 /* Switch Recognition by gcc.c. Add -G xx support. */
635
636 /* Override svr4.h definition. */
637 #undef SWITCH_TAKES_ARG
638 #define SWITCH_TAKES_ARG(CHAR) \
639 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
640 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
641 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \
642 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \
643 || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
644
645 extern int fixuplabelno;
646
647 /* Handle constructors specially for -mrelocatable. */
648 #define TARGET_ASM_CONSTRUCTOR rs6000_elf_asm_out_constructor
649 #define TARGET_ASM_DESTRUCTOR rs6000_elf_asm_out_destructor
650
651 /* This is the end of what might become sysv4.h. */
652
653 /* Use DWARF 2 debugging information by default. */
654 #undef PREFERRED_DEBUGGING_TYPE
655 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
656
657 /* Historically we have also supported stabs debugging. */
658 #define DBX_DEBUGGING_INFO 1
659
660 #define DBX_REGISTER_NUMBER(REGNO) rs6000_dbx_register_number (REGNO)
661
662 /* Map register numbers held in the call frame info that gcc has
663 collected using DWARF_FRAME_REGNUM to those that should be output in
664 .debug_frame and .eh_frame. We continue to use gcc hard reg numbers
665 for .eh_frame, but use the numbers mandated by the various ABIs for
666 .debug_frame. rs6000_emit_prologue has translated any combination of
667 CR2, CR3, CR4 saves to a save of CR2. The actual code emitted saves
668 the whole of CR, so we map CR2_REGNO to the DWARF reg for CR. */
669 #define DWARF2_FRAME_REG_OUT(REGNO, FOR_EH) \
670 ((FOR_EH) ? (REGNO) \
671 : (REGNO) == CR2_REGNO ? 64 \
672 : DBX_REGISTER_NUMBER (REGNO))
673
674 #define TARGET_ENCODE_SECTION_INFO rs6000_elf_encode_section_info
675 #define TARGET_IN_SMALL_DATA_P rs6000_elf_in_small_data_p
676 #define TARGET_SECTION_TYPE_FLAGS rs6000_elf_section_type_flags
677
678 /* The ELF version doesn't encode [DS] or whatever at the end of symbols. */
679
680 #define RS6000_OUTPUT_BASENAME(FILE, NAME) \
681 assemble_name (FILE, NAME)
682
683 /* We have to output the stabs for the function name *first*, before
684 outputting its label. */
685
686 #define DBX_FUNCTION_FIRST
687
688 /* This is the end of what might become sysv4dbx.h. */
689
690 #ifndef TARGET_VERSION
691 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
692 #endif
693 \f
694 #define TARGET_OS_SYSV_CPP_BUILTINS() \
695 do \
696 { \
697 if (flag_pic == 1) \
698 { \
699 builtin_define ("__pic__=1"); \
700 builtin_define ("__PIC__=1"); \
701 } \
702 else if (flag_pic == 2) \
703 { \
704 builtin_define ("__pic__=2"); \
705 builtin_define ("__PIC__=2"); \
706 } \
707 if (target_flags_explicit \
708 & MASK_RELOCATABLE) \
709 builtin_define ("_RELOCATABLE"); \
710 } \
711 while (0)
712
713 #ifndef TARGET_OS_CPP_BUILTINS
714 #define TARGET_OS_CPP_BUILTINS() \
715 do \
716 { \
717 builtin_define_std ("PPC"); \
718 builtin_define_std ("unix"); \
719 builtin_define ("__svr4__"); \
720 builtin_assert ("system=unix"); \
721 builtin_assert ("system=svr4"); \
722 builtin_assert ("cpu=powerpc"); \
723 builtin_assert ("machine=powerpc"); \
724 TARGET_OS_SYSV_CPP_BUILTINS (); \
725 } \
726 while (0)
727 #endif
728
729 /* Pass various options to the assembler. */
730 /* Override svr4.h definition. */
731 #undef ASM_SPEC
732 #define ASM_SPEC "%(asm_cpu) \
733 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
734 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
735 %{mrelocatable} %{mrelocatable-lib} %{fpic|fpie|fPIC|fPIE:-K PIC} \
736 %{memb|msdata|msdata=eabi: -memb} \
737 %{mlittle|mlittle-endian:-mlittle; \
738 mbig|mbig-endian :-mbig; \
739 mcall-aixdesc | \
740 mcall-freebsd | \
741 mcall-netbsd | \
742 mcall-openbsd | \
743 mcall-linux | \
744 mcall-gnu :-mbig; \
745 mcall-i960-old :-mlittle}"
746
747 #define CC1_ENDIAN_BIG_SPEC ""
748
749 #define CC1_ENDIAN_LITTLE_SPEC "\
750 %{!mstrict-align: %{!mno-strict-align: \
751 %{!mcall-i960-old: \
752 -mstrict-align \
753 } \
754 }}"
755
756 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big)"
757
758 #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
759 #define CC1_SECURE_PLT_DEFAULT_SPEC ""
760 #endif
761
762 /* Pass -G xxx to the compiler and set correct endian mode. */
763 #undef CC1_SPEC
764 #define CC1_SPEC "%{G*} \
765 %{mlittle|mlittle-endian: %(cc1_endian_little); \
766 mbig |mbig-endian : %(cc1_endian_big); \
767 mcall-aixdesc | \
768 mcall-freebsd | \
769 mcall-netbsd | \
770 mcall-openbsd | \
771 mcall-linux | \
772 mcall-gnu : -mbig %(cc1_endian_big); \
773 mcall-i960-old : -mlittle %(cc1_endian_little); \
774 : %(cc1_endian_default)} \
775 %{meabi: %{!mcall-*: -mcall-sysv }} \
776 %{!meabi: %{!mno-eabi: \
777 %{mrelocatable: -meabi } \
778 %{mcall-freebsd: -mno-eabi } \
779 %{mcall-i960-old: -meabi } \
780 %{mcall-linux: -mno-eabi } \
781 %{mcall-gnu: -mno-eabi } \
782 %{mcall-netbsd: -mno-eabi } \
783 %{mcall-openbsd: -mno-eabi }}} \
784 %{msdata: -msdata=default} \
785 %{mno-sdata: -msdata=none} \
786 %{!mbss-plt: %{!msecure-plt: %(cc1_secure_plt_default)}} \
787 %{profile: -p} \
788 %(cc1_os_netbsd)"
789
790 /* Don't put -Y P,<path> for cross compilers. */
791 #ifndef CROSS_COMPILE
792 #define LINK_PATH_SPEC "\
793 %{!R*:%{L*:-R %*}} \
794 %{!nostdlib: %{!YP,*: \
795 %{compat-bsd: \
796 %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
797 %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
798 %{!R*: %{!L*: -R /usr/ucblib}} \
799 %{!compat-bsd: \
800 %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
801 %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
802
803 #else
804 #define LINK_PATH_SPEC ""
805 #endif
806
807 /* Default starting address if specified. */
808 #define LINK_START_SPEC "\
809 %{mads : %(link_start_ads) ; \
810 myellowknife : %(link_start_yellowknife) ; \
811 mmvme : %(link_start_mvme) ; \
812 msim : %(link_start_sim) ; \
813 mwindiss : %(link_start_windiss) ; \
814 mcall-freebsd: %(link_start_freebsd) ; \
815 mcall-linux : %(link_start_linux) ; \
816 mcall-gnu : %(link_start_gnu) ; \
817 mcall-netbsd : %(link_start_netbsd) ; \
818 mcall-openbsd: %(link_start_openbsd) ; \
819 : %(link_start_default) }"
820
821 #define LINK_START_DEFAULT_SPEC ""
822
823 /* Override svr4.h definition. */
824 #undef LINK_SPEC
825 #define LINK_SPEC "\
826 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
827 %{YP,*} %{R*} \
828 %{Qy:} %{!Qn:-Qy} \
829 %(link_shlib) \
830 %{!Wl,-T*: %{!T*: %(link_start) }} \
831 %(link_target) \
832 %(link_os)"
833
834 /* For now, turn off shared libraries by default. */
835 #ifndef SHARED_LIB_SUPPORT
836 #define NO_SHARED_LIB_SUPPORT
837 #endif
838
839 #ifndef NO_SHARED_LIB_SUPPORT
840 /* Shared libraries are default. */
841 #define LINK_SHLIB_SPEC "\
842 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
843 %{mshlib: } \
844 %{static:-dn -Bstatic} \
845 %{shared:-G -dy -z text} \
846 %{symbolic:-Bsymbolic -G -dy -z text}"
847
848 #else
849 /* Shared libraries are not default. */
850 #define LINK_SHLIB_SPEC "\
851 %{mshlib: %(link_path) } \
852 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
853 %{static: } \
854 %{shared:-G -dy -z text %(link_path) } \
855 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
856 #endif
857
858 /* Override the default target of the linker. */
859 #define LINK_TARGET_SPEC "\
860 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
861 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
862 %{mcall-i960-old: --oformat elf32-powerpcle} \
863 }}}}"
864
865 /* Any specific OS flags. */
866 #define LINK_OS_SPEC "\
867 %{mads : %(link_os_ads) ; \
868 myellowknife : %(link_os_yellowknife) ; \
869 mmvme : %(link_os_mvme) ; \
870 msim : %(link_os_sim) ; \
871 mwindiss : %(link_os_windiss) ; \
872 mcall-freebsd: %(link_os_freebsd) ; \
873 mcall-linux : %(link_os_linux) ; \
874 mcall-gnu : %(link_os_gnu) ; \
875 mcall-netbsd : %(link_os_netbsd) ; \
876 mcall-openbsd: %(link_os_openbsd) ; \
877 : %(link_os_default) }"
878
879 #define LINK_OS_DEFAULT_SPEC ""
880
881 /* Override rs6000.h definition. */
882 #undef CPP_SPEC
883 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} \
884 %{mads : %(cpp_os_ads) ; \
885 myellowknife : %(cpp_os_yellowknife) ; \
886 mmvme : %(cpp_os_mvme) ; \
887 msim : %(cpp_os_sim) ; \
888 mwindiss : %(cpp_os_windiss) ; \
889 mcall-freebsd: %(cpp_os_freebsd) ; \
890 mcall-linux : %(cpp_os_linux) ; \
891 mcall-gnu : %(cpp_os_gnu) ; \
892 mcall-netbsd : %(cpp_os_netbsd) ; \
893 mcall-openbsd: %(cpp_os_openbsd) ; \
894 : %(cpp_os_default) }"
895
896 #define CPP_OS_DEFAULT_SPEC ""
897
898 /* Override svr4.h definition. */
899 #undef STARTFILE_SPEC
900 #define STARTFILE_SPEC "\
901 %{mads : %(startfile_ads) ; \
902 myellowknife : %(startfile_yellowknife) ; \
903 mmvme : %(startfile_mvme) ; \
904 msim : %(startfile_sim) ; \
905 mwindiss : %(startfile_windiss) ; \
906 mcall-freebsd: %(startfile_freebsd) ; \
907 mcall-linux : %(startfile_linux) ; \
908 mcall-gnu : %(startfile_gnu) ; \
909 mcall-netbsd : %(startfile_netbsd) ; \
910 mcall-openbsd: %(startfile_openbsd) ; \
911 : %(startfile_default) }"
912
913 #define STARTFILE_DEFAULT_SPEC ""
914
915 /* Override svr4.h definition. */
916 #undef LIB_SPEC
917 #define LIB_SPEC "\
918 %{mads : %(lib_ads) ; \
919 myellowknife : %(lib_yellowknife) ; \
920 mmvme : %(lib_mvme) ; \
921 msim : %(lib_sim) ; \
922 mwindiss : %(lib_windiss) ; \
923 mcall-freebsd: %(lib_freebsd) ; \
924 mcall-linux : %(lib_linux) ; \
925 mcall-gnu : %(lib_gnu) ; \
926 mcall-netbsd : %(lib_netbsd) ; \
927 mcall-openbsd: %(lib_openbsd) ; \
928 : %(lib_default) }"
929
930 #define LIB_DEFAULT_SPEC ""
931
932 /* Override svr4.h definition. */
933 #undef ENDFILE_SPEC
934 #define ENDFILE_SPEC "\
935 %{mads : crtsavres.o%s %(endfile_ads) ; \
936 myellowknife : crtsavres.o%s %(endfile_yellowknife) ; \
937 mmvme : crtsavres.o%s %(endfile_mvme) ; \
938 msim : crtsavres.o%s %(endfile_sim) ; \
939 mwindiss : %(endfile_windiss) ; \
940 mcall-freebsd: crtsavres.o%s %(endfile_freebsd) ; \
941 mcall-linux : crtsavres.o%s %(endfile_linux) ; \
942 mcall-gnu : crtsavres.o%s %(endfile_gnu) ; \
943 mcall-netbsd : crtsavres.o%s %(endfile_netbsd) ; \
944 mcall-openbsd: crtsavres.o%s %(endfile_openbsd) ; \
945 : %(crtsavres_default) %(endfile_default) }"
946
947 #define CRTSAVRES_DEFAULT_SPEC "crtsavres.o%s"
948
949 #define ENDFILE_DEFAULT_SPEC ""
950
951 /* Motorola ADS support. */
952 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
953
954 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
955
956 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
957
958 #define LINK_START_ADS_SPEC "-T ads.ld%s"
959
960 #define LINK_OS_ADS_SPEC ""
961
962 #define CPP_OS_ADS_SPEC ""
963
964 /* Motorola Yellowknife support. */
965 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
966
967 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
968
969 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
970
971 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
972
973 #define LINK_OS_YELLOWKNIFE_SPEC ""
974
975 #define CPP_OS_YELLOWKNIFE_SPEC ""
976
977 /* Motorola MVME support. */
978 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
979
980 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
981
982 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
983
984 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
985
986 #define LINK_OS_MVME_SPEC ""
987
988 #define CPP_OS_MVME_SPEC ""
989
990 /* PowerPC simulator based on netbsd system calls support. */
991 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
992
993 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
994
995 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
996
997 #define LINK_START_SIM_SPEC ""
998
999 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
1000
1001 #define CPP_OS_SIM_SPEC ""
1002
1003 /* FreeBSD support. */
1004
1005 #define CPP_OS_FREEBSD_SPEC "\
1006 -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
1007 -Acpu=powerpc -Amachine=powerpc"
1008
1009 #define STARTFILE_FREEBSD_SPEC FBSD_STARTFILE_SPEC
1010 #define ENDFILE_FREEBSD_SPEC FBSD_ENDFILE_SPEC
1011 #define LIB_FREEBSD_SPEC FBSD_LIB_SPEC
1012 #define LINK_START_FREEBSD_SPEC ""
1013
1014 #define LINK_OS_FREEBSD_SPEC "\
1015 %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \
1016 %{v:-V} \
1017 %{assert*} %{R*} %{rpath*} %{defsym*} \
1018 %{shared:-Bshareable %{h*} %{soname*}} \
1019 %{!shared: \
1020 %{!static: \
1021 %{rdynamic: -export-dynamic} \
1022 %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \
1023 %{static:-Bstatic}} \
1024 %{symbolic:-Bsymbolic}"
1025
1026 /* GNU/Linux support. */
1027 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1028 %{!mnewlib: %{pthread:-lpthread} %{shared:-lc} \
1029 %{!shared: %{profile:-lc_p} %{!profile:-lc}}}"
1030
1031 #ifdef HAVE_LD_PIE
1032 #define STARTFILE_LINUX_SPEC "\
1033 %{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
1034 %{mnewlib:ecrti.o%s;:crti.o%s} \
1035 %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
1036 #else
1037 #define STARTFILE_LINUX_SPEC "\
1038 %{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \
1039 %{mnewlib:ecrti.o%s;:crti.o%s} \
1040 %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
1041 #endif
1042
1043 #define ENDFILE_LINUX_SPEC "\
1044 %{shared|pie:crtendS.o%s;:crtend.o%s} \
1045 %{mnewlib:ecrtn.o%s;:crtn.o%s}"
1046
1047 #define LINK_START_LINUX_SPEC ""
1048
1049 #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1050 %{rdynamic:-export-dynamic} \
1051 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1052
1053 #if defined(HAVE_LD_EH_FRAME_HDR)
1054 # define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
1055 #endif
1056
1057 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1058 %{!undef: \
1059 %{!ansi: \
1060 %{!std=*:-Dunix -D__unix -Dlinux -D__linux} \
1061 %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}} \
1062 -Asystem=linux -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1063
1064 /* GNU/Hurd support. */
1065 #define LIB_GNU_SPEC "%{mnewlib: --start-group -lgnu -lc --end-group } \
1066 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1067 %{profile:-lc_p} %{!profile:-lc}}}"
1068
1069 #define STARTFILE_GNU_SPEC "\
1070 %{!shared: %{!static: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}} \
1071 %{static: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
1072 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1073 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1074
1075 #define ENDFILE_GNU_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1076 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1077
1078 #define LINK_START_GNU_SPEC ""
1079
1080 #define LINK_OS_GNU_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1081 %{rdynamic:-export-dynamic} \
1082 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1083
1084 #define CPP_OS_GNU_SPEC "-D__unix__ -D__gnu_hurd__ -D__GNU__ \
1085 %{!undef: \
1086 %{!ansi: -Dunix -D__unix}} \
1087 -Asystem=gnu -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1088
1089 /* NetBSD support. */
1090 #define LIB_NETBSD_SPEC NETBSD_LIB_SPEC
1091
1092 #define STARTFILE_NETBSD_SPEC NETBSD_STARTFILE_SPEC
1093
1094 #define ENDFILE_NETBSD_SPEC NETBSD_ENDFILE_SPEC
1095
1096 #define LINK_START_NETBSD_SPEC "\
1097 "
1098
1099 #define LINK_OS_NETBSD_SPEC NETBSD_LINK_SPEC_ELF
1100
1101 #define CPP_OS_NETBSD_SPEC "\
1102 -D__powerpc__ -D__NetBSD__ -D__KPRINTF_ATTRIBUTE__"
1103
1104 #define CC1_OS_NETBSD_SPEC "\
1105 %{cxx-isystem}"
1106
1107 /* OpenBSD support. */
1108 #ifndef LIB_OPENBSD_SPEC
1109 #define LIB_OPENBSD_SPEC "%{!shared:%{pthread:-lpthread%{p:_p}%{!p:%{pg:_p}}}} %{!shared:-lc%{p:_p}%{!p:%{pg:_p}}}"
1110 #endif
1111
1112 #ifndef STARTFILE_OPENBSD_SPEC
1113 #define STARTFILE_OPENBSD_SPEC "\
1114 %{!shared: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
1115 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1116 #endif
1117
1118 #ifndef ENDFILE_OPENBSD_SPEC
1119 #define ENDFILE_OPENBSD_SPEC "\
1120 %{!shared:crtend.o%s} %{shared:crtendS.o%s}"
1121 #endif
1122
1123 #ifndef LINK_START_OPENBSD_SPEC
1124 #define LINK_START_OPENBSD_SPEC "-Ttext 0x400074"
1125 #endif
1126
1127 #ifndef LINK_OS_OPENBSD_SPEC
1128 #define LINK_OS_OPENBSD_SPEC ""
1129 #endif
1130
1131 #ifndef CPP_OS_OPENBSD_SPEC
1132 #define CPP_OS_OPENBSD_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_POSIX_THREADS}"
1133 #endif
1134
1135 /* WindISS support. */
1136
1137 #define LIB_WINDISS_SPEC "--start-group -li -lcfp -lwindiss -lram -limpl -limpfp --end-group"
1138
1139 #define CPP_OS_WINDISS_SPEC "\
1140 -D__rtasim \
1141 -D__EABI__ \
1142 -D__ppc \
1143 %{!msoft-float: -D__hardfp} \
1144 "
1145
1146 #define STARTFILE_WINDISS_SPEC "crt0.o%s crtbegin.o%s"
1147
1148 #define ENDFILE_WINDISS_SPEC "crtend.o%s"
1149
1150 #define LINK_START_WINDISS_SPEC ""
1151
1152 #define LINK_OS_WINDISS_SPEC ""
1153
1154 /* Define any extra SPECS that the compiler needs to generate. */
1155 /* Override rs6000.h definition. */
1156 #undef SUBTARGET_EXTRA_SPECS
1157 #define SUBTARGET_EXTRA_SPECS \
1158 { "crtsavres_default", CRTSAVRES_DEFAULT_SPEC }, \
1159 { "lib_ads", LIB_ADS_SPEC }, \
1160 { "lib_yellowknife", LIB_YELLOWKNIFE_SPEC }, \
1161 { "lib_mvme", LIB_MVME_SPEC }, \
1162 { "lib_sim", LIB_SIM_SPEC }, \
1163 { "lib_freebsd", LIB_FREEBSD_SPEC }, \
1164 { "lib_gnu", LIB_GNU_SPEC }, \
1165 { "lib_linux", LIB_LINUX_SPEC }, \
1166 { "lib_netbsd", LIB_NETBSD_SPEC }, \
1167 { "lib_openbsd", LIB_OPENBSD_SPEC }, \
1168 { "lib_windiss", LIB_WINDISS_SPEC }, \
1169 { "lib_default", LIB_DEFAULT_SPEC }, \
1170 { "startfile_ads", STARTFILE_ADS_SPEC }, \
1171 { "startfile_yellowknife", STARTFILE_YELLOWKNIFE_SPEC }, \
1172 { "startfile_mvme", STARTFILE_MVME_SPEC }, \
1173 { "startfile_sim", STARTFILE_SIM_SPEC }, \
1174 { "startfile_freebsd", STARTFILE_FREEBSD_SPEC }, \
1175 { "startfile_gnu", STARTFILE_GNU_SPEC }, \
1176 { "startfile_linux", STARTFILE_LINUX_SPEC }, \
1177 { "startfile_netbsd", STARTFILE_NETBSD_SPEC }, \
1178 { "startfile_openbsd", STARTFILE_OPENBSD_SPEC }, \
1179 { "startfile_windiss", STARTFILE_WINDISS_SPEC }, \
1180 { "startfile_default", STARTFILE_DEFAULT_SPEC }, \
1181 { "endfile_ads", ENDFILE_ADS_SPEC }, \
1182 { "endfile_yellowknife", ENDFILE_YELLOWKNIFE_SPEC }, \
1183 { "endfile_mvme", ENDFILE_MVME_SPEC }, \
1184 { "endfile_sim", ENDFILE_SIM_SPEC }, \
1185 { "endfile_freebsd", ENDFILE_FREEBSD_SPEC }, \
1186 { "endfile_gnu", ENDFILE_GNU_SPEC }, \
1187 { "endfile_linux", ENDFILE_LINUX_SPEC }, \
1188 { "endfile_netbsd", ENDFILE_NETBSD_SPEC }, \
1189 { "endfile_openbsd", ENDFILE_OPENBSD_SPEC }, \
1190 { "endfile_windiss", ENDFILE_WINDISS_SPEC }, \
1191 { "endfile_default", ENDFILE_DEFAULT_SPEC }, \
1192 { "link_path", LINK_PATH_SPEC }, \
1193 { "link_shlib", LINK_SHLIB_SPEC }, \
1194 { "link_target", LINK_TARGET_SPEC }, \
1195 { "link_start", LINK_START_SPEC }, \
1196 { "link_start_ads", LINK_START_ADS_SPEC }, \
1197 { "link_start_yellowknife", LINK_START_YELLOWKNIFE_SPEC }, \
1198 { "link_start_mvme", LINK_START_MVME_SPEC }, \
1199 { "link_start_sim", LINK_START_SIM_SPEC }, \
1200 { "link_start_freebsd", LINK_START_FREEBSD_SPEC }, \
1201 { "link_start_gnu", LINK_START_GNU_SPEC }, \
1202 { "link_start_linux", LINK_START_LINUX_SPEC }, \
1203 { "link_start_netbsd", LINK_START_NETBSD_SPEC }, \
1204 { "link_start_openbsd", LINK_START_OPENBSD_SPEC }, \
1205 { "link_start_windiss", LINK_START_WINDISS_SPEC }, \
1206 { "link_start_default", LINK_START_DEFAULT_SPEC }, \
1207 { "link_os", LINK_OS_SPEC }, \
1208 { "link_os_ads", LINK_OS_ADS_SPEC }, \
1209 { "link_os_yellowknife", LINK_OS_YELLOWKNIFE_SPEC }, \
1210 { "link_os_mvme", LINK_OS_MVME_SPEC }, \
1211 { "link_os_sim", LINK_OS_SIM_SPEC }, \
1212 { "link_os_freebsd", LINK_OS_FREEBSD_SPEC }, \
1213 { "link_os_linux", LINK_OS_LINUX_SPEC }, \
1214 { "link_os_gnu", LINK_OS_GNU_SPEC }, \
1215 { "link_os_netbsd", LINK_OS_NETBSD_SPEC }, \
1216 { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
1217 { "link_os_windiss", LINK_OS_WINDISS_SPEC }, \
1218 { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
1219 { "cc1_endian_big", CC1_ENDIAN_BIG_SPEC }, \
1220 { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
1221 { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
1222 { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
1223 { "cc1_os_netbsd", CC1_OS_NETBSD_SPEC }, \
1224 { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
1225 { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
1226 { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
1227 { "cpp_os_sim", CPP_OS_SIM_SPEC }, \
1228 { "cpp_os_freebsd", CPP_OS_FREEBSD_SPEC }, \
1229 { "cpp_os_gnu", CPP_OS_GNU_SPEC }, \
1230 { "cpp_os_linux", CPP_OS_LINUX_SPEC }, \
1231 { "cpp_os_netbsd", CPP_OS_NETBSD_SPEC }, \
1232 { "cpp_os_openbsd", CPP_OS_OPENBSD_SPEC }, \
1233 { "cpp_os_windiss", CPP_OS_WINDISS_SPEC }, \
1234 { "cpp_os_default", CPP_OS_DEFAULT_SPEC }, \
1235 { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }, \
1236 SUBSUBTARGET_EXTRA_SPECS
1237
1238 #define SUBSUBTARGET_EXTRA_SPECS
1239
1240 /* Define this macro as a C expression for the initializer of an
1241 array of string to tell the driver program which options are
1242 defaults for this target and thus do not need to be handled
1243 specially when using `MULTILIB_OPTIONS'.
1244
1245 Do not define this macro if `MULTILIB_OPTIONS' is not defined in
1246 the target makefile fragment or if none of the options listed in
1247 `MULTILIB_OPTIONS' are set by default. *Note Target Fragment::. */
1248
1249 #define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
1250
1251 /* Define this macro if the code for function profiling should come
1252 before the function prologue. Normally, the profiling code comes
1253 after. */
1254 #define PROFILE_BEFORE_PROLOGUE 1
1255
1256 /* Function name to call to do profiling. */
1257 #define RS6000_MCOUNT "_mcount"
1258
1259 /* Define this macro (to a value of 1) if you want to support the
1260 Win32 style pragmas #pragma pack(push,<n>)' and #pragma
1261 pack(pop)'. The pack(push,<n>) pragma specifies the maximum
1262 alignment (in bytes) of fields within a structure, in much the
1263 same way as the __aligned__' and __packed__' __attribute__'s
1264 do. A pack value of zero resets the behavior to the default.
1265 Successive invocations of this pragma cause the previous values to
1266 be stacked, so that invocations of #pragma pack(pop)' will return
1267 to the previous value. */
1268
1269 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
1270
1271 /* Select a format to encode pointers in exception handling data. CODE
1272 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
1273 true if the symbol may be affected by dynamic relocations. */
1274 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
1275 ((flag_pic || TARGET_RELOCATABLE) \
1276 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1277 : DW_EH_PE_absptr)
1278
1279 #define DOUBLE_INT_ASM_OP "\t.quad\t"
1280
1281 /* Generate entries in .fixup for relocatable addresses. */
1282 #define RELOCATABLE_NEEDS_FIXUP 1
1283
1284 /* This target uses the sysv4.opt file. */
1285 #define TARGET_USES_SYSV4_OPT 1
NetBSD on the FriendlyARM MINI2440