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83349046 SB |
1 | /* Definitions of target machine for GNU compiler, |
2 | for 64 bit PowerPC linux. | |
85ec4feb | 3 | Copyright (C) 2000-2018 Free Software Foundation, Inc. |
83349046 SB |
4 | |
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published | |
9 | by the Free Software Foundation; either version 3, or (at your | |
10 | option) any later version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT | |
13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 | License for more details. | |
16 | ||
17 | Under Section 7 of GPL version 3, you are granted additional | |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
25 | ||
26 | #ifndef RS6000_BI_ARCH | |
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 | #define TARGET_PROFILE_KERNEL profile_kernel | |
61 | ||
62 | #undef TARGET_KEEP_LEAF_WHEN_PROFILED | |
63 | #define TARGET_KEEP_LEAF_WHEN_PROFILED rs6000_keep_leaf_when_profiled | |
64 | ||
65 | #define TARGET_USES_LINUX64_OPT 1 | |
66 | #ifdef HAVE_LD_LARGE_TOC | |
67 | #undef TARGET_CMODEL | |
68 | #define TARGET_CMODEL rs6000_current_cmodel | |
69 | #define SET_CMODEL(opt) rs6000_current_cmodel = opt | |
70 | #else | |
71 | #define SET_CMODEL(opt) do {} while (0) | |
72 | #endif | |
73 | ||
74 | #undef PROCESSOR_DEFAULT | |
75 | #define PROCESSOR_DEFAULT PROCESSOR_POWER7 | |
76 | #undef PROCESSOR_DEFAULT64 | |
77 | #define PROCESSOR_DEFAULT64 PROCESSOR_POWER8 | |
78 | ||
79 | /* We don't need to generate entries in .fixup, except when | |
80 | -mrelocatable or -mrelocatable-lib is given. */ | |
81 | #undef RELOCATABLE_NEEDS_FIXUP | |
82 | #define RELOCATABLE_NEEDS_FIXUP \ | |
83 | (rs6000_isa_flags & rs6000_isa_flags_explicit & OPTION_MASK_RELOCATABLE) | |
84 | ||
85 | #undef RS6000_ABI_NAME | |
86 | #define RS6000_ABI_NAME "linux" | |
87 | ||
88 | #define INVALID_64BIT "-m%s not supported in this configuration" | |
89 | #define INVALID_32BIT INVALID_64BIT | |
90 | ||
91 | #ifdef LINUX64_DEFAULT_ABI_ELFv2 | |
92 | #define ELFv2_ABI_CHECK (rs6000_elf_abi != 1) | |
93 | #else | |
94 | #define ELFv2_ABI_CHECK (rs6000_elf_abi == 2) | |
95 | #endif | |
96 | ||
97 | #undef SUBSUBTARGET_OVERRIDE_OPTIONS | |
98 | #define SUBSUBTARGET_OVERRIDE_OPTIONS \ | |
99 | do \ | |
100 | { \ | |
101 | if (!global_options_set.x_rs6000_alignment_flags) \ | |
102 | rs6000_alignment_flags = MASK_ALIGN_NATURAL; \ | |
103 | if (rs6000_isa_flags & OPTION_MASK_64BIT) \ | |
104 | { \ | |
105 | if (DEFAULT_ABI != ABI_AIX) \ | |
106 | { \ | |
107 | rs6000_current_abi = ABI_AIX; \ | |
108 | error (INVALID_64BIT, "call"); \ | |
109 | } \ | |
110 | dot_symbols = !strcmp (rs6000_abi_name, "aixdesc"); \ | |
111 | if (ELFv2_ABI_CHECK) \ | |
112 | { \ | |
113 | rs6000_current_abi = ABI_ELFv2; \ | |
114 | if (dot_symbols) \ | |
115 | error ("-mcall-aixdesc incompatible with -mabi=elfv2"); \ | |
116 | } \ | |
117 | if (rs6000_isa_flags & OPTION_MASK_RELOCATABLE) \ | |
118 | { \ | |
119 | rs6000_isa_flags &= ~OPTION_MASK_RELOCATABLE; \ | |
120 | error (INVALID_64BIT, "relocatable"); \ | |
121 | } \ | |
122 | if (rs6000_isa_flags & OPTION_MASK_EABI) \ | |
123 | { \ | |
124 | rs6000_isa_flags &= ~OPTION_MASK_EABI; \ | |
125 | error (INVALID_64BIT, "eabi"); \ | |
126 | } \ | |
127 | if (TARGET_PROTOTYPE) \ | |
128 | { \ | |
129 | target_prototype = 0; \ | |
130 | error (INVALID_64BIT, "prototype"); \ | |
131 | } \ | |
132 | if ((rs6000_isa_flags & OPTION_MASK_POWERPC64) == 0) \ | |
133 | { \ | |
134 | rs6000_isa_flags |= OPTION_MASK_POWERPC64; \ | |
135 | error ("-m64 requires a PowerPC64 cpu"); \ | |
136 | } \ | |
137 | if ((rs6000_isa_flags_explicit \ | |
138 | & OPTION_MASK_MINIMAL_TOC) != 0) \ | |
139 | { \ | |
140 | if (global_options_set.x_rs6000_current_cmodel \ | |
141 | && rs6000_current_cmodel != CMODEL_SMALL) \ | |
142 | error ("-mcmodel incompatible with other toc options"); \ | |
143 | SET_CMODEL (CMODEL_SMALL); \ | |
144 | } \ | |
145 | else \ | |
146 | { \ | |
147 | if (!global_options_set.x_rs6000_current_cmodel) \ | |
148 | SET_CMODEL (CMODEL_MEDIUM); \ | |
149 | if (rs6000_current_cmodel != CMODEL_SMALL) \ | |
150 | { \ | |
151 | if (!global_options_set.x_TARGET_NO_FP_IN_TOC) \ | |
152 | TARGET_NO_FP_IN_TOC \ | |
153 | = rs6000_current_cmodel == CMODEL_MEDIUM; \ | |
154 | if (!global_options_set.x_TARGET_NO_SUM_IN_TOC) \ | |
155 | TARGET_NO_SUM_IN_TOC = 0; \ | |
156 | } \ | |
157 | } \ | |
158 | } \ | |
159 | else \ | |
160 | { \ | |
161 | if (!RS6000_BI_ARCH_P) \ | |
162 | error (INVALID_32BIT, "32"); \ | |
163 | if (TARGET_PROFILE_KERNEL) \ | |
164 | { \ | |
165 | TARGET_PROFILE_KERNEL = 0; \ | |
166 | error (INVALID_32BIT, "profile-kernel"); \ | |
167 | } \ | |
168 | if (global_options_set.x_rs6000_current_cmodel) \ | |
169 | { \ | |
170 | SET_CMODEL (CMODEL_SMALL); \ | |
171 | error (INVALID_32BIT, "cmodel"); \ | |
172 | } \ | |
173 | } \ | |
174 | } \ | |
175 | while (0) | |
176 | ||
177 | #undef ASM_DEFAULT_SPEC | |
178 | #undef ASM_SPEC | |
179 | #undef LINK_OS_LINUX_SPEC | |
180 | #undef LINK_SECURE_PLT_SPEC | |
181 | ||
182 | #ifndef RS6000_BI_ARCH | |
183 | #define ASM_DEFAULT_SPEC "-mppc64" | |
184 | #define ASM_SPEC "%(asm_spec64) %(asm_spec_common)" | |
185 | #define LINK_OS_LINUX_SPEC "%(link_os_linux_spec64)" | |
186 | #define LINK_SECURE_PLT_SPEC "" | |
187 | #else | |
188 | #if DEFAULT_ARCH64_P | |
189 | #define ASM_DEFAULT_SPEC "-mppc%{!m32:64}" | |
190 | #define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)" | |
191 | #define LINK_OS_LINUX_SPEC "%{m32:%(link_os_linux_spec32)}%{!m32:%(link_os_linux_spec64)}" | |
192 | #define LINK_SECURE_PLT_SPEC "%{m32: " LINK_SECURE_PLT_DEFAULT_SPEC "}" | |
193 | #else | |
194 | #define ASM_DEFAULT_SPEC "-mppc%{m64:64}" | |
195 | #define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)" | |
196 | #define LINK_OS_LINUX_SPEC "%{!m64:%(link_os_linux_spec32)}%{m64:%(link_os_linux_spec64)}" | |
197 | #define LINK_SECURE_PLT_SPEC "%{!m64: " LINK_SECURE_PLT_DEFAULT_SPEC "}" | |
198 | #endif | |
199 | #endif | |
200 | ||
201 | #define ASM_SPEC32 "-a32 \ | |
202 | %{mrelocatable} %{mrelocatable-lib} %{" FPIE_OR_FPIC_SPEC ":-K PIC} \ | |
203 | %{memb|msdata=eabi: -memb}" | |
204 | ||
205 | #define ASM_SPEC64 "-a64" | |
206 | ||
207 | #define ASM_SPEC_COMMON "%(asm_cpu) \ | |
208 | %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}" \ | |
209 | ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN) | |
210 | ||
211 | #undef SUBSUBTARGET_EXTRA_SPECS | |
212 | #define SUBSUBTARGET_EXTRA_SPECS \ | |
213 | { "asm_spec_common", ASM_SPEC_COMMON }, \ | |
214 | { "asm_spec32", ASM_SPEC32 }, \ | |
215 | { "asm_spec64", ASM_SPEC64 }, \ | |
216 | { "link_os_linux_spec32", LINK_OS_LINUX_SPEC32 }, \ | |
217 | { "link_os_linux_spec64", LINK_OS_LINUX_SPEC64 }, \ | |
218 | { "link_os_extra_spec32", LINK_OS_EXTRA_SPEC32 }, \ | |
219 | { "link_os_extra_spec64", LINK_OS_EXTRA_SPEC64 }, \ | |
220 | { "link_os_new_dtags", LINK_OS_NEW_DTAGS_SPEC }, \ | |
221 | { "include_extra", INCLUDE_EXTRA_SPEC }, \ | |
222 | { "dynamic_linker_prefix", DYNAMIC_LINKER_PREFIX }, | |
223 | ||
224 | /* Optional specs used for overriding the system include directory, default | |
225 | -rpath links, and prefix for the dynamic linker. Normally, there are not | |
226 | defined, but if the user configure with the --with-advance-toolchain=<xxx> | |
227 | option, the advance-toolchain.h file will override these. */ | |
228 | #ifndef INCLUDE_EXTRA_SPEC | |
229 | #define INCLUDE_EXTRA_SPEC "" | |
230 | #endif | |
231 | ||
232 | #ifndef LINK_OS_EXTRA_SPEC32 | |
233 | #define LINK_OS_EXTRA_SPEC32 "" | |
234 | #endif | |
235 | ||
236 | #ifndef LINK_OS_EXTRA_SPEC64 | |
237 | #define LINK_OS_EXTRA_SPEC64 "" | |
238 | #endif | |
239 | ||
240 | #ifndef LINK_OS_NEW_DTAGS_SPEC | |
241 | #define LINK_OS_NEW_DTAGS_SPEC "" | |
242 | #endif | |
243 | ||
244 | #ifndef DYNAMIC_LINKER_PREFIX | |
245 | #define DYNAMIC_LINKER_PREFIX "" | |
246 | #endif | |
247 | ||
248 | #undef MULTILIB_DEFAULTS | |
249 | #if DEFAULT_ARCH64_P | |
250 | #define MULTILIB_DEFAULTS { "m64" } | |
251 | #else | |
252 | #define MULTILIB_DEFAULTS { "m32" } | |
253 | #endif | |
254 | ||
255 | /* Split stack is only supported for 64 bit, and requires glibc >= 2.18. */ | |
256 | #if TARGET_GLIBC_MAJOR * 1000 + TARGET_GLIBC_MINOR >= 2018 | |
257 | # ifndef RS6000_BI_ARCH | |
258 | # define TARGET_CAN_SPLIT_STACK | |
259 | # else | |
260 | # if DEFAULT_ARCH64_P | |
261 | /* Supported, and the default is -m64 */ | |
262 | # define TARGET_CAN_SPLIT_STACK_64BIT 1 | |
263 | # else | |
264 | /* Supported, and the default is -m32 */ | |
265 | # define TARGET_CAN_SPLIT_STACK_64BIT 0 | |
266 | # endif | |
267 | # endif | |
268 | #endif | |
269 | ||
270 | #ifndef RS6000_BI_ARCH | |
271 | ||
272 | /* 64-bit PowerPC Linux always has a TOC. */ | |
273 | #undef TARGET_TOC | |
274 | #define TARGET_TOC 1 | |
275 | ||
276 | /* Some things from sysv4.h we don't do when 64 bit. */ | |
277 | #undef OPTION_RELOCATABLE | |
278 | #define OPTION_RELOCATABLE 0 | |
279 | #undef OPTION_EABI | |
280 | #define OPTION_EABI 0 | |
281 | #undef OPTION_PROTOTYPE | |
282 | #define OPTION_PROTOTYPE 0 | |
283 | #undef RELOCATABLE_NEEDS_FIXUP | |
284 | #define RELOCATABLE_NEEDS_FIXUP 0 | |
285 | ||
286 | #endif | |
287 | ||
288 | /* We use glibc _mcount for profiling. */ | |
289 | #define NO_PROFILE_COUNTERS 1 | |
290 | #define PROFILE_HOOK(LABEL) \ | |
291 | do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0) | |
292 | ||
293 | /* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */ | |
294 | #undef ADJUST_FIELD_ALIGN | |
295 | #define ADJUST_FIELD_ALIGN(FIELD, TYPE, COMPUTED) \ | |
296 | (rs6000_special_adjust_field_align_p ((TYPE), (COMPUTED)) \ | |
297 | ? 128 \ | |
298 | : (TARGET_64BIT \ | |
299 | && TARGET_ALIGN_NATURAL == 0 \ | |
300 | && TYPE_MODE (strip_array_types (TYPE)) == DFmode) \ | |
301 | ? MIN ((COMPUTED), 32) \ | |
302 | : (COMPUTED)) | |
303 | ||
304 | /* PowerPC64 Linux increases natural record alignment to doubleword if | |
305 | the first field is an FP double, only if in power alignment mode. */ | |
306 | #undef ROUND_TYPE_ALIGN | |
307 | #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ | |
308 | ((TARGET_64BIT \ | |
309 | && (TREE_CODE (STRUCT) == RECORD_TYPE \ | |
310 | || TREE_CODE (STRUCT) == UNION_TYPE \ | |
311 | || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ | |
312 | && TARGET_ALIGN_NATURAL == 0) \ | |
313 | ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ | |
314 | : MAX ((COMPUTED), (SPECIFIED))) | |
315 | ||
316 | /* Use the default for compiling target libs. */ | |
317 | #ifdef IN_TARGET_LIBS | |
318 | #undef TARGET_ALIGN_NATURAL | |
319 | #define TARGET_ALIGN_NATURAL 1 | |
320 | #endif | |
321 | ||
322 | /* Indicate that jump tables go in the text section. */ | |
323 | #undef JUMP_TABLES_IN_TEXT_SECTION | |
324 | #define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT | |
325 | ||
326 | /* The linux ppc64 ABI isn't explicit on whether aggregates smaller | |
327 | than a doubleword should be padded upward or downward. You could | |
328 | reasonably assume that they follow the normal rules for structure | |
329 | layout treating the parameter area as any other block of memory, | |
330 | then map the reg param area to registers. i.e. pad upward. | |
331 | Setting both of the following defines results in this behavior. | |
332 | Setting just the first one will result in aggregates that fit in a | |
333 | doubleword being padded downward, and others being padded upward. | |
334 | Not a bad idea as this results in struct { int x; } being passed | |
335 | the same way as an int. */ | |
336 | #define AGGREGATE_PADDING_FIXED TARGET_64BIT | |
337 | #define AGGREGATES_PAD_UPWARD_ALWAYS 0 | |
338 | ||
339 | /* Specify padding for the last element of a block move between | |
340 | registers and memory. FIRST is nonzero if this is the only | |
341 | element. */ | |
342 | #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \ | |
76b0cbf8 | 343 | (!(FIRST) ? PAD_UPWARD : targetm.calls.function_arg_padding (MODE, TYPE)) |
83349046 SB |
344 | |
345 | /* Linux doesn't support saving and restoring 64-bit regs in a 32-bit | |
346 | process. */ | |
347 | #define OS_MISSING_POWERPC64 !TARGET_64BIT | |
348 | ||
349 | #ifdef SINGLE_LIBC | |
350 | #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC) | |
351 | #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC) | |
352 | #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC) | |
353 | #undef OPTION_MUSL | |
354 | #define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL) | |
355 | #else | |
356 | #define OPTION_GLIBC (linux_libc == LIBC_GLIBC) | |
357 | #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC) | |
358 | #define OPTION_BIONIC (linux_libc == LIBC_BIONIC) | |
359 | #undef OPTION_MUSL | |
360 | #define OPTION_MUSL (linux_libc == LIBC_MUSL) | |
361 | #endif | |
362 | ||
363 | /* Determine what functions are present at the runtime; | |
364 | this includes full c99 runtime and sincos. */ | |
365 | #undef TARGET_LIBC_HAS_FUNCTION | |
366 | #define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function | |
367 | ||
368 | #undef TARGET_OS_CPP_BUILTINS | |
369 | #define TARGET_OS_CPP_BUILTINS() \ | |
370 | do \ | |
371 | { \ | |
372 | if (TARGET_64BIT) \ | |
373 | { \ | |
374 | builtin_define ("__PPC__"); \ | |
375 | builtin_define ("__PPC64__"); \ | |
376 | builtin_define ("__powerpc__"); \ | |
377 | builtin_define ("__powerpc64__"); \ | |
378 | if (!DOT_SYMBOLS) \ | |
379 | builtin_define ("_CALL_LINUX"); \ | |
380 | builtin_assert ("cpu=powerpc64"); \ | |
381 | builtin_assert ("machine=powerpc64"); \ | |
382 | } \ | |
383 | else \ | |
384 | { \ | |
385 | builtin_define_std ("PPC"); \ | |
386 | builtin_define_std ("powerpc"); \ | |
387 | builtin_assert ("cpu=powerpc"); \ | |
388 | builtin_assert ("machine=powerpc"); \ | |
389 | TARGET_OS_SYSV_CPP_BUILTINS (); \ | |
390 | } \ | |
391 | } \ | |
392 | while (0) | |
393 | ||
b4c522fa IB |
394 | #define GNU_USER_TARGET_D_OS_VERSIONS() \ |
395 | do { \ | |
396 | builtin_version ("linux"); \ | |
397 | if (OPTION_GLIBC) \ | |
398 | builtin_version ("CRuntime_Glibc"); \ | |
399 | else if (OPTION_UCLIBC) \ | |
400 | builtin_version ("CRuntime_UClibc"); \ | |
401 | else if (OPTION_BIONIC) \ | |
402 | builtin_version ("CRuntime_Bionic"); \ | |
403 | else if (OPTION_MUSL) \ | |
404 | builtin_version ("CRuntime_Musl"); \ | |
405 | } while (0) | |
406 | ||
83349046 SB |
407 | #undef CPP_OS_DEFAULT_SPEC |
408 | #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux) %(include_extra)" | |
409 | ||
410 | #undef LINK_SHLIB_SPEC | |
411 | #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}" | |
412 | ||
413 | #undef LIB_DEFAULT_SPEC | |
414 | #define LIB_DEFAULT_SPEC "%(lib_linux)" | |
415 | ||
416 | #undef STARTFILE_DEFAULT_SPEC | |
417 | #define STARTFILE_DEFAULT_SPEC "%(startfile_linux)" | |
418 | ||
419 | #undef ENDFILE_DEFAULT_SPEC | |
420 | #define ENDFILE_DEFAULT_SPEC "%(endfile_linux)" | |
421 | ||
422 | #undef LINK_START_DEFAULT_SPEC | |
423 | #define LINK_START_DEFAULT_SPEC "%(link_start_linux)" | |
424 | ||
425 | #undef LINK_OS_DEFAULT_SPEC | |
426 | #define LINK_OS_DEFAULT_SPEC "%(link_os_linux)" | |
427 | ||
428 | #define GLIBC_DYNAMIC_LINKER32 "%(dynamic_linker_prefix)/lib/ld.so.1" | |
429 | ||
430 | #ifdef LINUX64_DEFAULT_ABI_ELFv2 | |
431 | #define GLIBC_DYNAMIC_LINKER64 \ | |
432 | "%{mabi=elfv1:%(dynamic_linker_prefix)/lib64/ld64.so.1;" \ | |
433 | ":%(dynamic_linker_prefix)/lib64/ld64.so.2}" | |
434 | #else | |
435 | #define GLIBC_DYNAMIC_LINKER64 \ | |
436 | "%{mabi=elfv2:%(dynamic_linker_prefix)/lib64/ld64.so.2;" \ | |
437 | ":%(dynamic_linker_prefix)/lib64/ld64.so.1}" | |
438 | #endif | |
439 | ||
440 | #define MUSL_DYNAMIC_LINKER32 \ | |
441 | "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1" | |
442 | #define MUSL_DYNAMIC_LINKER64 \ | |
443 | "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1" | |
444 | ||
445 | #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0" | |
446 | #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0" | |
447 | #if DEFAULT_LIBC == LIBC_UCLIBC | |
448 | #define CHOOSE_DYNAMIC_LINKER(G, U, M) \ | |
449 | "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}" | |
450 | #elif DEFAULT_LIBC == LIBC_GLIBC | |
451 | #define CHOOSE_DYNAMIC_LINKER(G, U, M) \ | |
452 | "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}" | |
453 | #elif DEFAULT_LIBC == LIBC_MUSL | |
454 | #define CHOOSE_DYNAMIC_LINKER(G, U, M) \ | |
455 | "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}" | |
456 | #else | |
457 | #error "Unsupported DEFAULT_LIBC" | |
458 | #endif | |
459 | #define GNU_USER_DYNAMIC_LINKER32 \ | |
460 | CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \ | |
461 | MUSL_DYNAMIC_LINKER32) | |
462 | #define GNU_USER_DYNAMIC_LINKER64 \ | |
463 | CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \ | |
464 | MUSL_DYNAMIC_LINKER64) | |
465 | ||
466 | #undef DEFAULT_ASM_ENDIAN | |
467 | #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN) | |
468 | #define DEFAULT_ASM_ENDIAN " -mlittle" | |
469 | #define LINK_OS_LINUX_EMUL32 ENDIAN_SELECT(" -m elf32ppclinux", \ | |
470 | " -m elf32lppclinux", \ | |
471 | " -m elf32lppclinux") | |
472 | #define LINK_OS_LINUX_EMUL64 ENDIAN_SELECT(" -m elf64ppc", \ | |
473 | " -m elf64lppc", \ | |
474 | " -m elf64lppc") | |
475 | #else | |
476 | #define DEFAULT_ASM_ENDIAN " -mbig" | |
477 | #define LINK_OS_LINUX_EMUL32 ENDIAN_SELECT(" -m elf32ppclinux", \ | |
478 | " -m elf32lppclinux", \ | |
479 | " -m elf32ppclinux") | |
480 | #define LINK_OS_LINUX_EMUL64 ENDIAN_SELECT(" -m elf64ppc", \ | |
481 | " -m elf64lppc", \ | |
482 | " -m elf64ppc") | |
483 | #endif | |
484 | ||
485 | #define LINK_OS_LINUX_SPEC32 LINK_OS_LINUX_EMUL32 " %{!shared: %{!static: \ | |
486 | %{rdynamic:-export-dynamic} \ | |
487 | -dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "}} \ | |
488 | %(link_os_extra_spec32)" | |
489 | ||
490 | #define LINK_OS_LINUX_SPEC64 LINK_OS_LINUX_EMUL64 " %{!shared: %{!static: \ | |
491 | %{rdynamic:-export-dynamic} \ | |
492 | -dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "}} \ | |
493 | %(link_os_extra_spec64)" | |
494 | ||
495 | #undef TOC_SECTION_ASM_OP | |
496 | #define TOC_SECTION_ASM_OP \ | |
497 | (TARGET_64BIT \ | |
498 | ? "\t.section\t\".toc\",\"aw\"" \ | |
499 | : "\t.section\t\".got\",\"aw\"") | |
500 | ||
501 | #undef MINIMAL_TOC_SECTION_ASM_OP | |
502 | #define MINIMAL_TOC_SECTION_ASM_OP \ | |
503 | (TARGET_64BIT \ | |
504 | ? "\t.section\t\".toc1\",\"aw\"" \ | |
505 | : (flag_pic \ | |
506 | ? "\t.section\t\".got2\",\"aw\"" \ | |
507 | : "\t.section\t\".got1\",\"aw\"")) | |
508 | ||
509 | /* Must be at least as big as our pointer type. */ | |
510 | #undef SIZE_TYPE | |
511 | #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int") | |
512 | ||
513 | #undef PTRDIFF_TYPE | |
514 | #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") | |
515 | ||
516 | #undef WCHAR_TYPE | |
517 | #define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int") | |
518 | #undef WCHAR_TYPE_SIZE | |
519 | #define WCHAR_TYPE_SIZE 32 | |
520 | ||
521 | #undef RS6000_MCOUNT | |
522 | #define RS6000_MCOUNT "_mcount" | |
523 | ||
524 | #ifdef __powerpc64__ | |
525 | /* _init and _fini functions are built from bits spread across many | |
526 | object files, each potentially with a different TOC pointer. For | |
527 | that reason, place a nop after the call so that the linker can | |
528 | restore the TOC pointer if a TOC adjusting call stub is needed. */ | |
529 | #if DOT_SYMBOLS | |
530 | #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ | |
531 | asm (SECTION_OP "\n" \ | |
532 | " bl ." #FUNC "\n" \ | |
533 | " nop\n" \ | |
534 | " .previous"); | |
535 | #else | |
536 | #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ | |
537 | asm (SECTION_OP "\n" \ | |
538 | " bl " #FUNC "\n" \ | |
539 | " nop\n" \ | |
540 | " .previous"); | |
541 | #endif | |
542 | #endif | |
543 | ||
544 | /* FP save and restore routines. */ | |
545 | #undef SAVE_FP_PREFIX | |
546 | #define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_") | |
547 | #undef SAVE_FP_SUFFIX | |
548 | #define SAVE_FP_SUFFIX "" | |
549 | #undef RESTORE_FP_PREFIX | |
550 | #define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_") | |
551 | #undef RESTORE_FP_SUFFIX | |
552 | #define RESTORE_FP_SUFFIX "" | |
553 | ||
554 | /* Dwarf2 debugging. */ | |
555 | #undef PREFERRED_DEBUGGING_TYPE | |
556 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
557 | ||
558 | /* This is how to declare the size of a function. */ | |
559 | #undef ASM_DECLARE_FUNCTION_SIZE | |
560 | #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ | |
561 | do \ | |
562 | { \ | |
563 | if (!flag_inhibit_size_directive) \ | |
564 | { \ | |
565 | fputs ("\t.size\t", (FILE)); \ | |
566 | if (TARGET_64BIT && DOT_SYMBOLS) \ | |
567 | putc ('.', (FILE)); \ | |
568 | assemble_name ((FILE), (FNAME)); \ | |
569 | fputs (",.-", (FILE)); \ | |
570 | rs6000_output_function_entry (FILE, FNAME); \ | |
571 | putc ('\n', (FILE)); \ | |
572 | } \ | |
573 | } \ | |
574 | while (0) | |
575 | ||
576 | /* Return nonzero if this entry is to be written into the constant | |
577 | pool in a special way. We do so if this is a SYMBOL_REF, LABEL_REF | |
578 | or a CONST containing one of them. If -mfp-in-toc (the default), | |
579 | we also do this for floating-point constants. We actually can only | |
580 | do this if the FP formats of the target and host machines are the | |
581 | same, but we can't check that since not every file that uses | |
582 | the macros includes real.h. We also do this when we can write the | |
583 | entry into the TOC and the entry is not larger than a TOC entry. */ | |
584 | ||
585 | #undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P | |
586 | #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \ | |
587 | (TARGET_TOC \ | |
588 | && (GET_CODE (X) == SYMBOL_REF \ | |
589 | || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS \ | |
590 | && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF) \ | |
591 | || GET_CODE (X) == LABEL_REF \ | |
592 | || (GET_CODE (X) == CONST_INT \ | |
593 | && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \ | |
594 | || (GET_CODE (X) == CONST_DOUBLE \ | |
595 | && ((TARGET_64BIT \ | |
596 | && (TARGET_MINIMAL_TOC \ | |
597 | || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \ | |
598 | && ! TARGET_NO_FP_IN_TOC))) \ | |
599 | || (!TARGET_64BIT \ | |
600 | && !TARGET_NO_FP_IN_TOC \ | |
601 | && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \ | |
602 | && BITS_PER_WORD == HOST_BITS_PER_INT))))) | |
603 | ||
604 | /* Select a format to encode pointers in exception handling data. CODE | |
605 | is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is | |
606 | true if the symbol may be affected by dynamic relocations. */ | |
607 | #undef ASM_PREFERRED_EH_DATA_FORMAT | |
608 | #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \ | |
609 | (TARGET_64BIT || flag_pic \ | |
610 | ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \ | |
611 | | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \ | |
612 | : DW_EH_PE_absptr) | |
613 | ||
614 | /* For backward compatibility, we must continue to use the AIX | |
615 | structure return convention. */ | |
616 | #undef DRAFT_V4_STRUCT_RET | |
617 | #define DRAFT_V4_STRUCT_RET (!TARGET_64BIT) | |
618 | ||
619 | #ifdef TARGET_LIBC_PROVIDES_SSP | |
620 | /* ppc32 glibc provides __stack_chk_guard in -0x7008(2), | |
621 | ppc64 glibc provides it at -0x7010(13). */ | |
622 | #define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? -0x7010 : -0x7008) | |
623 | #endif | |
624 | ||
625 | #define POWERPC_LINUX | |
626 | ||
627 | /* ppc{32,64} linux has 128-bit long double support in glibc 2.4 and later. */ | |
628 | #ifdef TARGET_DEFAULT_LONG_DOUBLE_128 | |
629 | #define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128 | |
630 | #endif | |
631 | ||
632 | /* Static stack checking is supported by means of probes. */ | |
633 | #define STACK_CHECK_STATIC_BUILTIN 1 | |
634 | ||
635 | /* The default value isn't sufficient in 64-bit mode. */ | |
636 | #define STACK_CHECK_PROTECT (TARGET_64BIT ? 16 * 1024 : 12 * 1024) | |
637 | ||
638 | /* Software floating point support for exceptions and rounding modes | |
639 | depends on the C library in use. */ | |
640 | #undef TARGET_FLOAT_EXCEPTIONS_ROUNDING_SUPPORTED_P | |
641 | #define TARGET_FLOAT_EXCEPTIONS_ROUNDING_SUPPORTED_P \ | |
642 | rs6000_linux_float_exceptions_rounding_supported_p | |
643 | ||
644 | /* Support for TARGET_ATOMIC_ASSIGN_EXPAND_FENV without FPRs depends | |
645 | on glibc 2.19 or greater. */ | |
646 | #if TARGET_GLIBC_MAJOR > 2 \ | |
647 | || (TARGET_GLIBC_MAJOR == 2 && TARGET_GLIBC_MINOR >= 19) | |
648 | #define RS6000_GLIBC_ATOMIC_FENV 1 | |
649 | #endif | |
650 | ||
651 | /* The IEEE 128-bit emulator is only built on Linux systems. Flag that we | |
652 | should enable the type handling for KFmode on VSX systems even if we are not | |
653 | enabling the __float128 keyword. */ | |
654 | #undef TARGET_FLOAT128_ENABLE_TYPE | |
655 | #define TARGET_FLOAT128_ENABLE_TYPE 1 |