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comparison gcc/config/rs6000/freebsd64.h @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
1 /* Definitions for 64-bit PowerPC running FreeBSD using the ELF format
2 Copyright (C) 2012-2017 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
6 GCC is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published
8 by the Free Software Foundation; either version 3, or (at your
9 option) any later version.
10
11 GCC is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
14 License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
19
20 /* Override the defaults, which exist to force the proper definition. */
21
22 #ifdef IN_LIBGCC2
23 #undef TARGET_64BIT
24 #ifdef __powerpc64__
25 #define TARGET_64BIT 1
26 #else
27 #define TARGET_64BIT 0
28 #endif
29 #endif
30
31 #undef TARGET_AIX
32 #define TARGET_AIX TARGET_64BIT
33
34 #ifdef HAVE_LD_NO_DOT_SYMS
35 /* New ABI uses a local sym for the function entry point. */
36 extern int dot_symbols;
37 #undef DOT_SYMBOLS
38 #define DOT_SYMBOLS dot_symbols
39 #endif
40
41 #define TARGET_USES_LINUX64_OPT 1
42 #ifdef HAVE_LD_LARGE_TOC
43 #undef TARGET_CMODEL
44 #define TARGET_CMODEL rs6000_current_cmodel
45 #define SET_CMODEL(opt) rs6000_current_cmodel = opt
46 #else
47 #define SET_CMODEL(opt) do {} while (0)
48 #endif
49
50 /* Until now the 970 is the only Processor where FreeBSD 64-bit runs on. */
51 #undef PROCESSOR_DEFAULT
52 #define PROCESSOR_DEFAULT PROCESSOR_POWER4
53 #undef PROCESSOR_DEFAULT64
54 #define PROCESSOR_DEFAULT64 PROCESSOR_POWER4
55
56 /* We don't need to generate entries in .fixup, except when
57 -mrelocatable or -mrelocatable-lib is given. */
58 #undef RELOCATABLE_NEEDS_FIXUP
59 #define RELOCATABLE_NEEDS_FIXUP \
60 (rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE)
61
62 #undef RS6000_ABI_NAME
63 #define RS6000_ABI_NAME "freebsd"
64
65 #define INVALID_64BIT "-m%s not supported in this configuration"
66 #define INVALID_32BIT INVALID_64BIT
67
68 /* Use LINUX64 instead of FREEBSD64 for compat with e.g. sysv4le.h */
69 #ifdef LINUX64_DEFAULT_ABI_ELFv2
70 #define ELFv2_ABI_CHECK (rs6000_elf_abi != 1)
71 #else
72 #define ELFv2_ABI_CHECK (rs6000_elf_abi == 2)
73 #endif
74
75 #undef SUBSUBTARGET_OVERRIDE_OPTIONS
76 #define SUBSUBTARGET_OVERRIDE_OPTIONS \
77 do \
78 { \
79 if (!global_options_set.x_rs6000_alignment_flags) \
80 rs6000_alignment_flags = MASK_ALIGN_NATURAL; \
81 if (TARGET_64BIT) \
82 { \
83 if (DEFAULT_ABI != ABI_AIX) \
84 { \
85 rs6000_current_abi = ABI_AIX; \
86 error (INVALID_64BIT, "call"); \
87 } \
88 dot_symbols = !strcmp (rs6000_abi_name, "aixdesc"); \
89 if (rs6000_isa_flags & OPTION_MASK_RELOCATABLE) \
90 { \
91 rs6000_isa_flags &= ~OPTION_MASK_RELOCATABLE; \
92 error (INVALID_64BIT, "relocatable"); \
93 } \
94 if (ELFv2_ABI_CHECK) \
95 { \
96 rs6000_current_abi = ABI_ELFv2; \
97 if (dot_symbols) \
98 error ("-mcall-aixdesc incompatible with -mabi=elfv2"); \
99 } \
100 if (rs6000_isa_flags & OPTION_MASK_EABI) \
101 { \
102 rs6000_isa_flags &= ~OPTION_MASK_EABI; \
103 error (INVALID_64BIT, "eabi"); \
104 } \
105 if (TARGET_PROTOTYPE) \
106 { \
107 target_prototype = 0; \
108 error (INVALID_64BIT, "prototype"); \
109 } \
110 if ((rs6000_isa_flags & OPTION_MASK_POWERPC64) == 0) \
111 { \
112 rs6000_isa_flags |= OPTION_MASK_POWERPC64; \
113 error ("-m64 requires a PowerPC64 cpu"); \
114 } \
115 if ((rs6000_isa_flags_explicit \
116 & OPTION_MASK_MINIMAL_TOC) != 0) \
117 { \
118 if (global_options_set.x_rs6000_current_cmodel \
119 && rs6000_current_cmodel != CMODEL_SMALL) \
120 error ("-mcmodel incompatible with other toc options"); \
121 SET_CMODEL (CMODEL_SMALL); \
122 } \
123 else \
124 { \
125 if (!global_options_set.x_rs6000_current_cmodel) \
126 SET_CMODEL (CMODEL_MEDIUM); \
127 if (rs6000_current_cmodel != CMODEL_SMALL) \
128 { \
129 TARGET_NO_FP_IN_TOC = 0; \
130 TARGET_NO_SUM_IN_TOC = 0; \
131 } \
132 } \
133 } \
134 } \
135 while (0)
136
137 #undef ASM_DEFAULT_SPEC
138 #undef ASM_SPEC
139 #undef LINK_OS_FREEBSD_SPEC
140
141 #define ASM_DEFAULT_SPEC "-mppc%{!m32:64}"
142 #define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)"
143 #define LINK_OS_FREEBSD_SPEC "%{m32:%(link_os_freebsd_spec32)}%{!m32:%(link_os_freebsd_spec64)}"
144
145 #define ASM_SPEC32 "-a32 \
146 %{mrelocatable} %{mrelocatable-lib} %{" FPIE_OR_FPIC_SPEC ":-K PIC} \
147 %{memb} %{!memb: %{msdata=eabi: -memb}} \
148 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
149 %{mcall-freebsd: -mbig} \
150 %{mcall-i960-old: -mlittle} \
151 %{mcall-linux: -mbig} \
152 %{mcall-gnu: -mbig} \
153 %{mcall-netbsd: -mbig} \
154 }}}}"
155
156 #define ASM_SPEC64 "-a64"
157
158 #define ASM_SPEC_COMMON "%(asm_cpu) \
159 %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}} \
160 %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian}"
161
162 #undef SUBSUBTARGET_EXTRA_SPECS
163 #define SUBSUBTARGET_EXTRA_SPECS \
164 { "asm_spec_common", ASM_SPEC_COMMON }, \
165 { "asm_spec32", ASM_SPEC32 }, \
166 { "asm_spec64", ASM_SPEC64 }, \
167 { "link_os_freebsd_spec32", LINK_OS_FREEBSD_SPEC32 }, \
168 { "link_os_freebsd_spec64", LINK_OS_FREEBSD_SPEC64 },
169
170 #define LINK_OS_FREEBSD_SPEC_DEF "\
171 %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \
172 %{v:-V} \
173 %{assert*} %{R*} %{rpath*} %{defsym*} \
174 %{shared:-Bshareable %{h*} %{soname*}} \
175 %{!shared: \
176 %{!static: \
177 %{rdynamic: -export-dynamic} \
178 %{!dynamic-linker:-dynamic-linker " FBSD_DYNAMIC_LINKER "}} \
179 %{static:-Bstatic}} \
180 %{symbolic:-Bsymbolic}"
181
182 #define LINK_OS_FREEBSD_SPEC32 "-melf32ppc_fbsd " LINK_OS_FREEBSD_SPEC_DEF
183
184 #define LINK_OS_FREEBSD_SPEC64 "-melf64ppc_fbsd " LINK_OS_FREEBSD_SPEC_DEF
185
186 #undef MULTILIB_DEFAULTS
187 #define MULTILIB_DEFAULTS { "m64" }
188
189 /* PowerPC-64 FreeBSD increases natural record alignment to doubleword if
190 the first field is an FP double, only if in power alignment mode. */
191 #undef ROUND_TYPE_ALIGN
192 #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
193 ((TARGET_64BIT \
194 && (TREE_CODE (STRUCT) == RECORD_TYPE \
195 || TREE_CODE (STRUCT) == UNION_TYPE \
196 || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
197 && TARGET_ALIGN_NATURAL == 0) \
198 ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \
199 : MAX ((COMPUTED), (SPECIFIED)))
200
201 /* Use the default for compiling target libs. */
202 #ifdef IN_TARGET_LIBS
203 #undef TARGET_ALIGN_NATURAL
204 #define TARGET_ALIGN_NATURAL 1
205 #endif
206
207 /* Indicate that jump tables go in the text section. */
208 #undef JUMP_TABLES_IN_TEXT_SECTION
209 #define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT
210
211 /* The linux ppc64 ABI isn't explicit on whether aggregates smaller
212 than a doubleword should be padded upward or downward. You could
213 reasonably assume that they follow the normal rules for structure
214 layout treating the parameter area as any other block of memory,
215 then map the reg param area to registers. i.e. pad upward.
216 Setting both of the following defines results in this behavior.
217 Setting just the first one will result in aggregates that fit in a
218 doubleword being padded downward, and others being padded upward.
219 Not a bad idea as this results in struct { int x; } being passed
220 the same way as an int. */
221 #define AGGREGATE_PADDING_FIXED TARGET_64BIT
222 #define AGGREGATES_PAD_UPWARD_ALWAYS 0
223
224 /* Specify padding for the last element of a block move between
225 registers and memory. FIRST is nonzero if this is the only
226 element. */
227 #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
228 (!(FIRST) ? PAD_UPWARD : targetm.calls.function_arg_padding (MODE, TYPE))
229
230 /* FreeBSD doesn't support saving and restoring 64-bit regs with a 32-bit
231 kernel. This is supported when running on a 64-bit kernel with
232 COMPAT_FREEBSD32, but tell GCC it isn't so that our 32-bit binaries
233 are compatible. */
234 #define OS_MISSING_POWERPC64 !TARGET_64BIT
235
236 #undef FBSD_TARGET_CPU_CPP_BUILTINS
237 #define FBSD_TARGET_CPU_CPP_BUILTINS() \
238 do \
239 { \
240 builtin_define ("__PPC__"); \
241 builtin_define ("__ppc__"); \
242 builtin_define ("__powerpc__"); \
243 if (TARGET_64BIT) \
244 { \
245 builtin_define ("__arch64__"); \
246 builtin_define ("__LP64__"); \
247 builtin_define ("__PPC64__"); \
248 builtin_define ("__powerpc64__"); \
249 builtin_assert ("cpu=powerpc64"); \
250 builtin_assert ("machine=powerpc64"); \
251 } \
252 else \
253 { \
254 builtin_define_std ("PPC"); \
255 builtin_define_std ("powerpc"); \
256 builtin_assert ("cpu=powerpc"); \
257 builtin_assert ("machine=powerpc"); \
258 TARGET_OS_SYSV_CPP_BUILTINS (); \
259 } \
260 } \
261 while (0)
262
263 #undef CPP_OS_DEFAULT_SPEC
264 #define CPP_OS_DEFAULT_SPEC "%(cpp_os_freebsd)"
265
266 #undef CPP_OS_FREEBSD_SPEC
267 #define CPP_OS_FREEBSD_SPEC ""
268
269 #undef STARTFILE_DEFAULT_SPEC
270 #define STARTFILE_DEFAULT_SPEC "%(startfile_freebsd)"
271
272 #undef ENDFILE_DEFAULT_SPEC
273 #define ENDFILE_DEFAULT_SPEC "%(endfile_freebsd)"
274
275 #undef LIB_DEFAULT_SPEC
276 #define LIB_DEFAULT_SPEC "%(lib_freebsd)"
277
278 #undef LINK_START_DEFAULT_SPEC
279 #define LINK_START_DEFAULT_SPEC "%(link_start_freebsd)"
280
281 #undef LINK_OS_DEFAULT_SPEC
282 #define LINK_OS_DEFAULT_SPEC "%(link_os_freebsd)"
283
284 /* XXX: This is wrong for many platforms in sysv4.h.
285 We should work on getting that definition fixed. */
286 #undef LINK_SHLIB_SPEC
287 #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
288
289
290 /************************[ Target stuff ]***********************************/
291
292 /* Define the actual types of some ANSI-mandated types.
293 Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c,
294 c-common.c, and config/<arch>/<arch>.h. */
295
296
297 #undef SIZE_TYPE
298 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
299
300 #undef PTRDIFF_TYPE
301 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
302
303 /* rs6000.h gets this wrong for FreeBSD. We use the GCC defaults instead. */
304 #undef WCHAR_TYPE
305
306 #undef WCHAR_TYPE_SIZE
307 #define WCHAR_TYPE_SIZE 32
308
309
310 /* Override rs6000.h definition. */
311 #undef ASM_APP_ON
312 #define ASM_APP_ON "#APP\n"
313
314 /* Override rs6000.h definition. */
315 #undef ASM_APP_OFF
316 #define ASM_APP_OFF "#NO_APP\n"
317
318 /* Function profiling bits */
319 #undef RS6000_MCOUNT
320 #define RS6000_MCOUNT "_mcount"
321
322 #define PROFILE_HOOK(LABEL) \
323 do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0)
324
325 /* _init and _fini functions are built from bits spread across many
326 object files, each potentially with a different TOC pointer. For
327 that reason, place a nop after the call so that the linker can
328 restore the TOC pointer if a TOC adjusting call stub is needed. */
329 #ifdef __powerpc64__
330 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
331 asm (SECTION_OP "\n" \
332 " bl " #FUNC "\n" \
333 " nop\n" \
334 " .previous");
335 #endif
336
337 /* FP save and restore routines. */
338 #undef SAVE_FP_PREFIX
339 #define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_")
340 #undef SAVE_FP_SUFFIX
341 #define SAVE_FP_SUFFIX ""
342 #undef RESTORE_FP_PREFIX
343 #define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_")
344 #undef RESTORE_FP_SUFFIX
345 #define RESTORE_FP_SUFFIX ""
346
347 /* Select a format to encode pointers in exception handling data. CODE
348 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
349 true if the symbol may be affected by dynamic relocations. */
350 #undef ASM_PREFERRED_EH_DATA_FORMAT
351 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
352 (TARGET_64BIT || flag_pic \
353 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \
354 | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \
355 : DW_EH_PE_absptr)
356
357 /* Static stack checking is supported by means of probes. */
358 #define STACK_CHECK_STATIC_BUILTIN 1
359
360 /* The default value isn't sufficient in 64-bit mode. */
361 #define STACK_CHECK_PROTECT (TARGET_64BIT ? 16 * 1024 : 12 * 1024)
362
363 /* Use standard DWARF numbering for DWARF debugging information. */
364 #define RS6000_USE_DWARF_NUMBERING
365
366 /* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */
367 #undef ADJUST_FIELD_ALIGN
368 #define ADJUST_FIELD_ALIGN(FIELD, TYPE, COMPUTED) \
369 (rs6000_special_adjust_field_align_p ((TYPE), (COMPUTED)) \
370 ? 128 \
371 : (TARGET_64BIT \
372 && TARGET_ALIGN_NATURAL == 0 \
373 && TYPE_MODE (strip_array_types (TYPE)) == DFmode) \
374 ? MIN ((COMPUTED), 32) \
375 : (COMPUTED))
376
377 #undef TOC_SECTION_ASM_OP
378 #define TOC_SECTION_ASM_OP \
379 (TARGET_64BIT \
380 ? "\t.section\t\".toc\",\"aw\"" \
381 : "\t.section\t\".got\",\"aw\"")
382
383 #undef MINIMAL_TOC_SECTION_ASM_OP
384 #define MINIMAL_TOC_SECTION_ASM_OP \
385 (TARGET_64BIT \
386 ? "\t.section\t\".toc1\",\"aw\"" \
387 : (flag_pic \
388 ? "\t.section\t\".got2\",\"aw\"" \
389 : "\t.section\t\".got1\",\"aw\""))
390
391 /* This is how to declare the size of a function. */
392 #undef ASM_DECLARE_FUNCTION_SIZE
393 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
394 do \
395 { \
396 if (!flag_inhibit_size_directive) \
397 { \
398 fputs ("\t.size\t", (FILE)); \
399 if (TARGET_64BIT && DOT_SYMBOLS) \
400 putc ('.', (FILE)); \
401 assemble_name ((FILE), (FNAME)); \
402 fputs (",.-", (FILE)); \
403 rs6000_output_function_entry (FILE, FNAME); \
404 putc ('\n', (FILE)); \
405 } \
406 } \
407 while (0)
408
409 #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
410 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
411 (TARGET_TOC \
412 && (GET_CODE (X) == SYMBOL_REF \
413 || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \
414 && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \
415 || GET_CODE (X) == LABEL_REF \
416 || (GET_CODE (X) == CONST_INT \
417 && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
418 || (GET_CODE (X) == CONST_DOUBLE \
419 && ((TARGET_64BIT \
420 && (TARGET_MINIMAL_TOC \
421 || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
422 && ! TARGET_NO_FP_IN_TOC))) \
423 || (!TARGET_64BIT \
424 && !TARGET_NO_FP_IN_TOC \
425 && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
426 && BITS_PER_WORD == HOST_BITS_PER_INT)))))
427
428 /* Use --as-needed -lgcc_s for eh support. */
429 #ifdef HAVE_LD_AS_NEEDED
430 #define USE_LD_AS_NEEDED 1
431 #endif
432
433 #define POWERPC_FREEBSD