]> git.ipfire.org Git - thirdparty/gcc.git/blob - gcc/config/rs6000/linux64.h
projects / thirdparty / gcc.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
m32r.md, [...]: Fix comment typos.
[thirdparty/gcc.git] / gcc / config / rs6000 / linux64.h
1 /* Definitions of target machine for GNU compiler,
2 for 64 bit PowerPC linux.
3 Copyright (C) 2000, 2001, 2002, 2003, 2004
4 Free Software Foundation, Inc.
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 #ifndef RS6000_BI_ARCH
24
25 #undef DEFAULT_ABI
26 #define DEFAULT_ABI ABI_AIX
27
28 #undef TARGET_64BIT
29 #define TARGET_64BIT 1
30
31 #define DEFAULT_ARCH64_P 1
32 #define RS6000_BI_ARCH_P 0
33
34 #else
35
36 #define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT)
37 #define RS6000_BI_ARCH_P 1
38
39 #endif
40
41 #ifdef IN_LIBGCC2
42 #undef TARGET_64BIT
43 #ifdef __powerpc64__
44 #define TARGET_64BIT 1
45 #else
46 #define TARGET_64BIT 0
47 #endif
48 #endif
49
50 #undef TARGET_AIX
51 #define TARGET_AIX TARGET_64BIT
52
53 #ifdef HAVE_LD_NO_DOT_SYMS
54 /* New ABI uses a local sym for the function entry point. */
55 extern int dot_symbols;
56 #undef DOT_SYMBOLS
57 #define DOT_SYMBOLS dot_symbols
58 #endif
59
60 #undef PROCESSOR_DEFAULT64
61 #define PROCESSOR_DEFAULT64 PROCESSOR_PPC630
62
63 #undef TARGET_RELOCATABLE
64 #define TARGET_RELOCATABLE (!TARGET_64BIT && (target_flags & MASK_RELOCATABLE))
65
66 #undef RS6000_ABI_NAME
67 #define RS6000_ABI_NAME "linux"
68
69 #define INVALID_64BIT "-m%s not supported in this configuration"
70 #define INVALID_32BIT INVALID_64BIT
71
72 #undef SUBSUBTARGET_OVERRIDE_OPTIONS
73 #define SUBSUBTARGET_OVERRIDE_OPTIONS \
74 do \
75 { \
76 if (rs6000_alignment_string == 0) \
77 rs6000_alignment_flags = MASK_ALIGN_NATURAL; \
78 if (TARGET_64BIT) \
79 { \
80 if (DEFAULT_ABI != ABI_AIX) \
81 { \
82 rs6000_current_abi = ABI_AIX; \
83 error (INVALID_64BIT, "call"); \
84 } \
85 dot_symbols = !strcmp (rs6000_abi_name, "aixdesc"); \
86 if (target_flags & MASK_RELOCATABLE) \
87 { \
88 target_flags &= ~MASK_RELOCATABLE; \
89 error (INVALID_64BIT, "relocatable"); \
90 } \
91 if (target_flags & MASK_EABI) \
92 { \
93 target_flags &= ~MASK_EABI; \
94 error (INVALID_64BIT, "eabi"); \
95 } \
96 if (target_flags & MASK_PROTOTYPE) \
97 { \
98 target_flags &= ~MASK_PROTOTYPE; \
99 error (INVALID_64BIT, "prototype"); \
100 } \
101 if ((target_flags & MASK_POWERPC64) == 0) \
102 { \
103 target_flags |= MASK_POWERPC64; \
104 error ("-m64 requires a PowerPC64 cpu"); \
105 } \
106 } \
107 else \
108 { \
109 if (!RS6000_BI_ARCH_P) \
110 error (INVALID_32BIT, "32"); \
111 if (TARGET_PROFILE_KERNEL) \
112 { \
113 target_flags &= ~MASK_PROFILE_KERNEL; \
114 error (INVALID_32BIT, "profile-kernel"); \
115 } \
116 } \
117 } \
118 while (0)
119
120 #ifdef RS6000_BI_ARCH
121
122 #undef OVERRIDE_OPTIONS
123 #define OVERRIDE_OPTIONS \
124 rs6000_override_options (((TARGET_DEFAULT ^ target_flags) & MASK_64BIT) \
125 ? (char *) 0 : TARGET_CPU_DEFAULT)
126
127 #endif
128
129 #undef ASM_DEFAULT_SPEC
130 #undef ASM_SPEC
131 #undef LINK_OS_LINUX_SPEC
132
133 #ifndef RS6000_BI_ARCH
134 #define ASM_DEFAULT_SPEC "-mppc64"
135 #define ASM_SPEC "%(asm_spec64) %(asm_spec_common)"
136 #define LINK_OS_LINUX_SPEC "%(link_os_linux_spec64)"
137 #else
138 #if DEFAULT_ARCH64_P
139 #define ASM_DEFAULT_SPEC "-mppc%{!m32:64}"
140 #define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)"
141 #define LINK_OS_LINUX_SPEC "%{m32:%(link_os_linux_spec32)}%{!m32:%(link_os_linux_spec64)}"
142 #else
143 #define ASM_DEFAULT_SPEC "-mppc%{m64:64}"
144 #define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"
145 #define LINK_OS_LINUX_SPEC "%{!m64:%(link_os_linux_spec32)}%{m64:%(link_os_linux_spec64)}"
146 #endif
147 #endif
148
149 #define ASM_SPEC32 "-a32 %{n} %{T} %{Ym,*} %{Yd,*} \
150 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
151 %{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
152 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
153 %{mcall-freebsd: -mbig} \
154 %{mcall-i960-old: -mlittle} \
155 %{mcall-linux: -mbig} \
156 %{mcall-gnu: -mbig} \
157 %{mcall-netbsd: -mbig} \
158 }}}}"
159
160 #define ASM_SPEC64 "-a64"
161
162 #define ASM_SPEC_COMMON "%(asm_cpu) \
163 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
164 %{v:-V} %{Qy:} %{!Qn:-Qy} %{Wa,*:%*} \
165 %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian}"
166
167 #undef SUBSUBTARGET_EXTRA_SPECS
168 #define SUBSUBTARGET_EXTRA_SPECS \
169 { "asm_spec_common", ASM_SPEC_COMMON }, \
170 { "asm_spec32", ASM_SPEC32 }, \
171 { "asm_spec64", ASM_SPEC64 }, \
172 { "link_os_linux_spec32", LINK_OS_LINUX_SPEC32 }, \
173 { "link_os_linux_spec64", LINK_OS_LINUX_SPEC64 },
174
175 #undef MULTILIB_DEFAULTS
176 #if DEFAULT_ARCH64_P
177 #define MULTILIB_DEFAULTS { "m64" }
178 #else
179 #define MULTILIB_DEFAULTS { "m32" }
180 #endif
181
182 #ifndef RS6000_BI_ARCH
183
184 /* 64-bit PowerPC Linux is always big-endian. */
185 #undef TARGET_LITTLE_ENDIAN
186 #define TARGET_LITTLE_ENDIAN 0
187
188 /* 64-bit PowerPC Linux always has a TOC. */
189 #undef TARGET_TOC
190 #define TARGET_TOC 1
191
192 /* Some things from sysv4.h we don't do when 64 bit. */
193 #undef TARGET_RELOCATABLE
194 #define TARGET_RELOCATABLE 0
195 #undef TARGET_EABI
196 #define TARGET_EABI 0
197 #undef TARGET_PROTOTYPE
198 #define TARGET_PROTOTYPE 0
199
200 #endif
201
202 #define MASK_PROFILE_KERNEL 0x00100000
203
204 /* Non-standard profiling for kernels, which just saves LR then calls
205 _mcount without worrying about arg saves. The idea is to change
206 the function prologue as little as possible as it isn't easy to
207 account for arg save/restore code added just for _mcount. */
208 #define TARGET_PROFILE_KERNEL (target_flags & MASK_PROFILE_KERNEL)
209
210 /* Override sysv4.h. */
211 #undef EXTRA_SUBTARGET_SWITCHES
212 #define EXTRA_SUBTARGET_SWITCHES \
213 {"profile-kernel", MASK_PROFILE_KERNEL, \
214 N_("Call mcount for profiling before a function prologue") }, \
215 {"no-profile-kernel", -MASK_PROFILE_KERNEL, \
216 N_("Call mcount for profiling after a function prologue") },
217
218 /* We use glibc _mcount for profiling. */
219 #define NO_PROFILE_COUNTERS TARGET_64BIT
220 #define PROFILE_HOOK(LABEL) \
221 do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0)
222
223 /* We don't need to generate entries in .fixup. */
224 #undef RELOCATABLE_NEEDS_FIXUP
225
226 /* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */
227 #undef ADJUST_FIELD_ALIGN
228 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
229 ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
230 ? 128 \
231 : (TARGET_64BIT \
232 && TARGET_ALIGN_NATURAL == 0 \
233 && TYPE_MODE (TREE_CODE (TREE_TYPE (FIELD)) == ARRAY_TYPE \
234 ? get_inner_array_type (FIELD) \
235 : TREE_TYPE (FIELD)) == DFmode) \
236 ? MIN ((COMPUTED), 32) \
237 : (COMPUTED))
238
239 /* PowerPC64 Linux increases natural record alignment to doubleword if
240 the first field is an FP double, only if in power alignment mode. */
241 #undef ROUND_TYPE_ALIGN
242 #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
243 ((TARGET_ALTIVEC && TREE_CODE (STRUCT) == VECTOR_TYPE) \
244 ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \
245 : (TARGET_64BIT \
246 && (TREE_CODE (STRUCT) == RECORD_TYPE \
247 || TREE_CODE (STRUCT) == UNION_TYPE \
248 || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
249 && TARGET_ALIGN_NATURAL == 0) \
250 ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \
251 : MAX ((COMPUTED), (SPECIFIED)))
252
253 /* Indicate that jump tables go in the text section. */
254 #undef JUMP_TABLES_IN_TEXT_SECTION
255 #define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT
256
257 /* The linux ppc64 ABI isn't explicit on whether aggregates smaller
258 than a doubleword should be padded upward or downward. You could
259 reasonably assume that they follow the normal rules for structure
260 layout treating the parameter area as any other block of memory,
261 then map the reg param area to registers. i.e. pad upward.
262 Setting both of the following defines results in this behavior.
263 Setting just the first one will result in aggregates that fit in a
264 doubleword being padded downward, and others being padded upward.
265 Not a bad idea as this results in struct { int x; } being passed
266 the same way as an int. */
267 #define AGGREGATE_PADDING_FIXED TARGET_64BIT
268 #define AGGREGATES_PAD_UPWARD_ALWAYS 0
269
270 /* Specify padding for the last element of a block move between
271 registers and memory. FIRST is nonzero if this is the only
272 element. */
273 #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
274 (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE))
275
276 /* __throw will restore its own return address to be the same as the
277 return address of the function that the throw is being made to.
278 This is unfortunate, because we want to check the original
279 return address to see if we need to restore the TOC.
280 So we have to squirrel it away with this. */
281 #define SETUP_FRAME_ADDRESSES() \
282 do { if (TARGET_64BIT) rs6000_aix_emit_builtin_unwind_init (); } while (0)
283
284 /* Override svr4.h */
285 #undef MD_EXEC_PREFIX
286 #undef MD_STARTFILE_PREFIX
287
288 #undef TARGET_OS_CPP_BUILTINS
289 #define TARGET_OS_CPP_BUILTINS() \
290 do \
291 { \
292 if (TARGET_64BIT) \
293 { \
294 builtin_define ("__PPC__"); \
295 builtin_define ("__PPC64__"); \
296 builtin_define ("__powerpc__"); \
297 builtin_define ("__powerpc64__"); \
298 builtin_define ("__PIC__"); \
299 builtin_assert ("cpu=powerpc64"); \
300 builtin_assert ("machine=powerpc64"); \
301 } \
302 else \
303 { \
304 builtin_define_std ("PPC"); \
305 builtin_define_std ("powerpc"); \
306 builtin_assert ("cpu=powerpc"); \
307 builtin_assert ("machine=powerpc"); \
308 TARGET_OS_SYSV_CPP_BUILTINS (); \
309 } \
310 } \
311 while (0)
312
313 #undef CPP_OS_DEFAULT_SPEC
314 #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
315
316 /* The GNU C++ standard library currently requires _GNU_SOURCE being
317 defined on glibc-based systems. This temporary hack accomplishes this,
318 it should go away as soon as libstdc++-v3 has a real fix. */
319 #undef CPLUSPLUS_CPP_SPEC
320 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
321
322 #undef LINK_SHLIB_SPEC
323 #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
324
325 #undef LIB_DEFAULT_SPEC
326 #define LIB_DEFAULT_SPEC "%(lib_linux)"
327
328 #undef STARTFILE_DEFAULT_SPEC
329 #define STARTFILE_DEFAULT_SPEC "%(startfile_linux)"
330
331 #undef ENDFILE_DEFAULT_SPEC
332 #define ENDFILE_DEFAULT_SPEC "%(endfile_linux)"
333
334 #undef LINK_START_DEFAULT_SPEC
335 #define LINK_START_DEFAULT_SPEC "%(link_start_linux)"
336
337 #undef LINK_OS_DEFAULT_SPEC
338 #define LINK_OS_DEFAULT_SPEC "%(link_os_linux)"
339
340 #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
341 %{rdynamic:-export-dynamic} \
342 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
343
344 #define LINK_OS_LINUX_SPEC64 "-m elf64ppc %{!shared: %{!static: \
345 %{rdynamic:-export-dynamic} \
346 %{!dynamic-linker:-dynamic-linker /lib64/ld64.so.1}}}"
347
348 #undef TOC_SECTION_ASM_OP
349 #define TOC_SECTION_ASM_OP \
350 (TARGET_64BIT \
351 ? "\t.section\t\".toc\",\"aw\"" \
352 : "\t.section\t\".got\",\"aw\"")
353
354 #undef MINIMAL_TOC_SECTION_ASM_OP
355 #define MINIMAL_TOC_SECTION_ASM_OP \
356 (TARGET_64BIT \
357 ? "\t.section\t\".toc1\",\"aw\"" \
358 : ((TARGET_RELOCATABLE || flag_pic) \
359 ? "\t.section\t\".got2\",\"aw\"" \
360 : "\t.section\t\".got1\",\"aw\""))
361
362 #undef TARGET_VERSION
363 #define TARGET_VERSION fprintf (stderr, " (PowerPC64 GNU/Linux)");
364
365 /* Must be at least as big as our pointer type. */
366 #undef SIZE_TYPE
367 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
368
369 #undef PTRDIFF_TYPE
370 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
371
372 #undef WCHAR_TYPE
373 #define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int")
374 #undef WCHAR_TYPE_SIZE
375 #define WCHAR_TYPE_SIZE 32
376
377 /* Override rs6000.h definition. */
378 #undef ASM_APP_ON
379 #define ASM_APP_ON "#APP\n"
380
381 /* Override rs6000.h definition. */
382 #undef ASM_APP_OFF
383 #define ASM_APP_OFF "#NO_APP\n"
384
385 /* PowerPC no-op instruction. */
386 #undef RS6000_CALL_GLUE
387 #define RS6000_CALL_GLUE (TARGET_64BIT ? "nop" : "cror 31,31,31")
388
389 #undef RS6000_MCOUNT
390 #define RS6000_MCOUNT "_mcount"
391
392 #ifdef __powerpc64__
393 /* _init and _fini functions are built from bits spread across many
394 object files, each potentially with a different TOC pointer. For
395 that reason, place a nop after the call so that the linker can
396 restore the TOC pointer if a TOC adjusting call stub is needed. */
397 #if DOT_SYMBOLS
398 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
399 asm (SECTION_OP "\n" \
400 " bl ." #FUNC "\n" \
401 " nop\n" \
402 " .previous");
403 #else
404 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
405 asm (SECTION_OP "\n" \
406 " bl " #FUNC "\n" \
407 " nop\n" \
408 " .previous");
409 #endif
410 #endif
411
412 /* FP save and restore routines. */
413 #undef SAVE_FP_PREFIX
414 #define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_")
415 #undef SAVE_FP_SUFFIX
416 #define SAVE_FP_SUFFIX (TARGET_64BIT ? "" : "_l")
417 #undef RESTORE_FP_PREFIX
418 #define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_")
419 #undef RESTORE_FP_SUFFIX
420 #define RESTORE_FP_SUFFIX (TARGET_64BIT ? "" : "_l")
421
422 /* Dwarf2 debugging. */
423 #undef PREFERRED_DEBUGGING_TYPE
424 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
425
426 /* This is how to declare the size of a function. */
427 #undef ASM_DECLARE_FUNCTION_SIZE
428 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
429 do \
430 { \
431 if (!flag_inhibit_size_directive) \
432 { \
433 fputs ("\t.size\t", (FILE)); \
434 if (TARGET_64BIT && DOT_SYMBOLS) \
435 putc ('.', (FILE)); \
436 assemble_name ((FILE), (FNAME)); \
437 fputs (",.-", (FILE)); \
438 rs6000_output_function_entry (FILE, FNAME); \
439 putc ('\n', (FILE)); \
440 } \
441 } \
442 while (0)
443
444 /* Return nonzero if this entry is to be written into the constant
445 pool in a special way. We do so if this is a SYMBOL_REF, LABEL_REF
446 or a CONST containing one of them. If -mfp-in-toc (the default),
447 we also do this for floating-point constants. We actually can only
448 do this if the FP formats of the target and host machines are the
449 same, but we can't check that since not every file that uses
450 GO_IF_LEGITIMATE_ADDRESS_P includes real.h. We also do this when
451 we can write the entry into the TOC and the entry is not larger
452 than a TOC entry. */
453
454 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
455 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
456 (TARGET_TOC \
457 && (GET_CODE (X) == SYMBOL_REF \
458 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
459 && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
460 || GET_CODE (X) == LABEL_REF \
461 || (GET_CODE (X) == CONST_INT \
462 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
463 || (GET_CODE (X) == CONST_DOUBLE \
464 && ((TARGET_64BIT \
465 && (TARGET_POWERPC64 \
466 || TARGET_MINIMAL_TOC \
467 || (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
468 && ! TARGET_NO_FP_IN_TOC))) \
469 || (!TARGET_64BIT \
470 && !TARGET_NO_FP_IN_TOC \
471 && !TARGET_RELOCATABLE \
472 && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
473 && BITS_PER_WORD == HOST_BITS_PER_INT)))))
474
475 /* This is the same as the dbxelf.h version, except that we need to
476 use the function code label, not the function descriptor. */
477 #undef ASM_OUTPUT_SOURCE_LINE
478 #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE, COUNTER) \
479 do \
480 { \
481 char temp[256]; \
482 const char *s; \
483 ASM_GENERATE_INTERNAL_LABEL (temp, "LM", COUNTER); \
484 fprintf (FILE, "\t.stabn 68,0,%d,", LINE); \
485 assemble_name (FILE, temp); \
486 putc ('-', FILE); \
487 s = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); \
488 rs6000_output_function_entry (FILE, s); \
489 putc ('\n', FILE); \
490 (*targetm.asm_out.internal_label) (FILE, "LM", COUNTER); \
491 } \
492 while (0)
493
494 /* Similarly, we want the function code label here. */
495 #define DBX_OUTPUT_BRAC(FILE, NAME, BRAC) \
496 do \
497 { \
498 const char *s; \
499 fprintf (FILE, "%s%d,0,0,", ASM_STABN_OP, BRAC); \
500 assemble_name (FILE, NAME); \
501 putc ('-', FILE); \
502 if (current_function_func_begin_label != NULL) \
503 { \
504 assemble_name (FILE, current_function_func_begin_label); \
505 } \
506 else \
507 { \
508 s = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); \
509 rs6000_output_function_entry (FILE, s); \
510 } \
511 putc ('\n', FILE); \
512 } \
513 while (0)
514
515 #define DBX_OUTPUT_LBRAC(FILE, NAME) DBX_OUTPUT_BRAC (FILE, NAME, N_LBRAC)
516 #define DBX_OUTPUT_RBRAC(FILE, NAME) DBX_OUTPUT_BRAC (FILE, NAME, N_RBRAC)
517
518 /* Another case where we want the dot name. */
519 #define DBX_OUTPUT_NFUN(FILE, LSCOPE, DECL) \
520 do \
521 { \
522 const char *s; \
523 fprintf (FILE, "%s\"\",%d,0,0,", ASM_STABS_OP, N_FUN); \
524 assemble_name (FILE, LSCOPE); \
525 putc ('-', FILE); \
526 s = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); \
527 rs6000_output_function_entry (FILE, s); \
528 putc ('\n', FILE); \
529 } \
530 while (0)
531
532 /* Select a format to encode pointers in exception handling data. CODE
533 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
534 true if the symbol may be affected by dynamic relocations. */
535 #undef ASM_PREFERRED_EH_DATA_FORMAT
536 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
537 ((TARGET_64BIT || flag_pic || TARGET_RELOCATABLE) \
538 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \
539 | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \
540 : DW_EH_PE_absptr)
541
542 /* For backward compatibility, we must continue to use the AIX
543 structure return convention. */
544 #undef DRAFT_V4_STRUCT_RET
545 #define DRAFT_V4_STRUCT_RET (!TARGET_64BIT)
546
547 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
548
549 #define TARGET_HAS_F_SETLKW
550
551 #define LINK_GCC_C_SEQUENCE_SPEC \
552 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
553
554 /* Use --as-needed -lgcc_s for eh support. */
555 #ifdef HAVE_LD_AS_NEEDED
556 #define USE_LD_AS_NEEDED 1
557 #endif
558
559 #define MD_UNWIND_SUPPORT "config/rs6000/linux-unwind.h"
560
561 #define OS_MISSING_POWERPC64 !TARGET_64BIT
Mirror of https://gcc.gnu.org/git/gcc.git