Mercurial > hg > CbC > CbC_gcc
comparison gcc/config/i386/darwin.h @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | 77e2b8dfacca |
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1 /* Target definitions for x86 running Darwin. | |
2 Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008 | |
3 Free Software Foundation, Inc. | |
4 Contributed by Apple Computer Inc. | |
5 | |
6 This file is part of GCC. | |
7 | |
8 GCC is free software; you can redistribute it and/or modify | |
9 it under the terms of the GNU General Public License as published by | |
10 the Free Software Foundation; either version 3, or (at your option) | |
11 any later version. | |
12 | |
13 GCC is distributed in the hope that it will be useful, | |
14 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 GNU General Public 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 COPYING3. If not see | |
20 <http://www.gnu.org/licenses/>. */ | |
21 | |
22 /* Enable Mach-O bits in generic x86 code. */ | |
23 #undef TARGET_MACHO | |
24 #define TARGET_MACHO 1 | |
25 | |
26 #define TARGET_VERSION fprintf (stderr, " (i686 Darwin)"); | |
27 | |
28 #undef TARGET_64BIT | |
29 #define TARGET_64BIT OPTION_ISA_64BIT | |
30 | |
31 #ifdef IN_LIBGCC2 | |
32 #undef TARGET_64BIT | |
33 #ifdef __x86_64__ | |
34 #define TARGET_64BIT 1 | |
35 #else | |
36 #define TARGET_64BIT 0 | |
37 #endif | |
38 #endif | |
39 | |
40 /* Size of the Obj-C jump buffer. */ | |
41 #define OBJC_JBLEN ((TARGET_64BIT) ? ((9 * 2) + 3 + 16) : (18)) | |
42 | |
43 #undef TARGET_FPMATH_DEFAULT | |
44 #define TARGET_FPMATH_DEFAULT (TARGET_SSE ? FPMATH_SSE : FPMATH_387) | |
45 | |
46 #define TARGET_OS_CPP_BUILTINS() \ | |
47 do \ | |
48 { \ | |
49 builtin_define ("__LITTLE_ENDIAN__"); \ | |
50 darwin_cpp_builtins (pfile); \ | |
51 } \ | |
52 while (0) | |
53 | |
54 #undef PTRDIFF_TYPE | |
55 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") | |
56 | |
57 #undef WCHAR_TYPE | |
58 #define WCHAR_TYPE "int" | |
59 | |
60 #undef WCHAR_TYPE_SIZE | |
61 #define WCHAR_TYPE_SIZE 32 | |
62 | |
63 #undef MAX_BITS_PER_WORD | |
64 #define MAX_BITS_PER_WORD 64 | |
65 | |
66 #undef FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN | |
67 #define FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN (0) | |
68 | |
69 #undef TARGET_KEEPS_VECTOR_ALIGNED_STACK | |
70 #define TARGET_KEEPS_VECTOR_ALIGNED_STACK 1 | |
71 | |
72 /* On Darwin, the stack is 128-bit aligned at the point of every call. | |
73 Failure to ensure this will lead to a crash in the system libraries | |
74 or dynamic loader. */ | |
75 #undef STACK_BOUNDARY | |
76 #define STACK_BOUNDARY 128 | |
77 | |
78 #undef MAIN_STACK_BOUNDARY | |
79 #define MAIN_STACK_BOUNDARY 128 | |
80 | |
81 /* Since we'll never want a stack boundary less aligned than 128 bits | |
82 we need the extra work here otherwise bits of gcc get very grumpy | |
83 when we ask for lower alignment. We could just reject values less | |
84 than 128 bits for Darwin, but it's easier to up the alignment if | |
85 it's below the minimum. */ | |
86 #undef PREFERRED_STACK_BOUNDARY | |
87 #define PREFERRED_STACK_BOUNDARY \ | |
88 MAX (STACK_BOUNDARY, ix86_preferred_stack_boundary) | |
89 | |
90 /* We want -fPIC by default, unless we're using -static to compile for | |
91 the kernel or some such. */ | |
92 | |
93 #undef CC1_SPEC | |
94 #define CC1_SPEC "%(cc1_cpu) \ | |
95 %{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}} \ | |
96 %{!mmacosx-version-min=*:-mmacosx-version-min=%(darwin_minversion)} \ | |
97 %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }}" | |
98 | |
99 #undef ASM_SPEC | |
100 #define ASM_SPEC "-arch %(darwin_arch) -force_cpusubtype_ALL" | |
101 | |
102 #define DARWIN_ARCH_SPEC "%{m64:x86_64;:i386}" | |
103 #define DARWIN_SUBARCH_SPEC DARWIN_ARCH_SPEC | |
104 | |
105 /* Determine a minimum version based on compiler options. */ | |
106 #define DARWIN_MINVERSION_SPEC \ | |
107 "%{!m64|fgnu-runtime:10.4; \ | |
108 ,objective-c|,objc-cpp-output:10.5; \ | |
109 ,objective-c-header:10.5; \ | |
110 ,objective-c++|,objective-c++-cpp-output:10.5; \ | |
111 ,objective-c++-header|,objc++-cpp-output:10.5; \ | |
112 :10.4}" | |
113 | |
114 #undef ENDFILE_SPEC | |
115 #define ENDFILE_SPEC \ | |
116 "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \ | |
117 %{mpc32:crtprec32.o%s} \ | |
118 %{mpc64:crtprec64.o%s} \ | |
119 %{mpc80:crtprec80.o%s}" | |
120 | |
121 #undef SUBTARGET_EXTRA_SPECS | |
122 #define SUBTARGET_EXTRA_SPECS \ | |
123 DARWIN_EXTRA_SPECS \ | |
124 { "darwin_arch", DARWIN_ARCH_SPEC }, \ | |
125 { "darwin_crt2", "" }, \ | |
126 { "darwin_subarch", DARWIN_SUBARCH_SPEC }, | |
127 | |
128 /* Use the following macro for any Darwin/x86-specific command-line option | |
129 translation. */ | |
130 #define SUBTARGET_OPTION_TRANSLATE_TABLE \ | |
131 { "", "" } | |
132 | |
133 /* The Darwin assembler mostly follows AT&T syntax. */ | |
134 #undef ASSEMBLER_DIALECT | |
135 #define ASSEMBLER_DIALECT ASM_ATT | |
136 | |
137 /* Define macro used to output shift-double opcodes when the shift | |
138 count is in %cl. Some assemblers require %cl as an argument; | |
139 some don't. This macro controls what to do: by default, don't | |
140 print %cl. */ | |
141 | |
142 #define SHIFT_DOUBLE_OMITS_COUNT 0 | |
143 | |
144 extern void darwin_x86_file_end (void); | |
145 #undef TARGET_ASM_FILE_END | |
146 #define TARGET_ASM_FILE_END darwin_x86_file_end | |
147 | |
148 /* Define the syntax of pseudo-ops, labels and comments. */ | |
149 | |
150 /* String containing the assembler's comment-starter. */ | |
151 | |
152 #define ASM_COMMENT_START "#" | |
153 | |
154 /* By default, target has a 80387, uses IEEE compatible arithmetic, | |
155 and returns float values in the 387. */ | |
156 | |
157 #undef TARGET_SUBTARGET_DEFAULT | |
158 #define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_128BIT_LONG_DOUBLE) | |
159 | |
160 /* For darwin we want to target specific processor features as a minimum, | |
161 but these unfortunately don't correspond to a specific processor. */ | |
162 #undef TARGET_SUBTARGET32_ISA_DEFAULT | |
163 #define TARGET_SUBTARGET32_ISA_DEFAULT (OPTION_MASK_ISA_MMX \ | |
164 | OPTION_MASK_ISA_SSE \ | |
165 | OPTION_MASK_ISA_SSE2) | |
166 | |
167 #undef TARGET_SUBTARGET64_ISA_DEFAULT | |
168 #define TARGET_SUBTARGET64_ISA_DEFAULT (OPTION_MASK_ISA_MMX \ | |
169 | OPTION_MASK_ISA_SSE \ | |
170 | OPTION_MASK_ISA_SSE2 \ | |
171 | OPTION_MASK_ISA_SSE3) | |
172 | |
173 /* For now, disable dynamic-no-pic. We'll need to go through i386.c | |
174 with a fine-tooth comb looking for refs to flag_pic! */ | |
175 #define MASK_MACHO_DYNAMIC_NO_PIC 0 | |
176 #define TARGET_DYNAMIC_NO_PIC (target_flags & MASK_MACHO_DYNAMIC_NO_PIC) | |
177 | |
178 #undef GOT_SYMBOL_NAME | |
179 #define GOT_SYMBOL_NAME MACHOPIC_FUNCTION_BASE_NAME | |
180 | |
181 /* Define the syntax of pseudo-ops, labels and comments. */ | |
182 | |
183 #define LPREFIX "L" | |
184 | |
185 /* These are used by -fbranch-probabilities */ | |
186 #define HOT_TEXT_SECTION_NAME "__TEXT,__text,regular,pure_instructions" | |
187 #define UNLIKELY_EXECUTED_TEXT_SECTION_NAME \ | |
188 "__TEXT,__unlikely,regular,pure_instructions" | |
189 | |
190 /* Assembler pseudos to introduce constants of various size. */ | |
191 | |
192 #define ASM_BYTE_OP "\t.byte\t" | |
193 #define ASM_SHORT "\t.word\t" | |
194 #define ASM_LONG "\t.long\t" | |
195 #define ASM_QUAD "\t.quad\t" | |
196 | |
197 #define SUBTARGET_ENCODE_SECTION_INFO darwin_encode_section_info | |
198 | |
199 #undef ASM_OUTPUT_ALIGN | |
200 #define ASM_OUTPUT_ALIGN(FILE,LOG) \ | |
201 do { if ((LOG) != 0) \ | |
202 { \ | |
203 if (in_section == text_section) \ | |
204 fprintf (FILE, "\t%s %d,0x90\n", ALIGN_ASM_OP, (LOG)); \ | |
205 else \ | |
206 fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG)); \ | |
207 } \ | |
208 } while (0) | |
209 | |
210 /* This says how to output an assembler line | |
211 to define a global common symbol. */ | |
212 | |
213 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ | |
214 ( fputs (".comm ", (FILE)), \ | |
215 assemble_name ((FILE), (NAME)), \ | |
216 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (ROUNDED))) | |
217 | |
218 /* This says how to output an assembler line | |
219 to define a local common symbol. */ | |
220 | |
221 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ | |
222 ( fputs (".lcomm ", (FILE)), \ | |
223 assemble_name ((FILE), (NAME)), \ | |
224 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (ROUNDED))) | |
225 | |
226 /* Darwin profiling -- call mcount. */ | |
227 #undef FUNCTION_PROFILER | |
228 #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
229 do { \ | |
230 if (MACHOPIC_INDIRECT && !TARGET_64BIT) \ | |
231 { \ | |
232 const char *name = machopic_mcount_stub_name (); \ | |
233 fprintf (FILE, "\tcall %s\n", name+1); /* skip '&' */ \ | |
234 machopic_validate_stub_or_non_lazy_ptr (name); \ | |
235 } \ | |
236 else fprintf (FILE, "\tcall mcount\n"); \ | |
237 } while (0) | |
238 | |
239 #define C_COMMON_OVERRIDE_OPTIONS \ | |
240 do { \ | |
241 SUBTARGET_C_COMMON_OVERRIDE_OPTIONS; \ | |
242 } while (0) | |
243 | |
244 /* Darwin on x86_64 uses dwarf-2 by default. Pre-darwin9 32-bit | |
245 compiles default to stabs+. darwin9+ defaults to dwarf-2. */ | |
246 #ifndef DARWIN_PREFER_DWARF | |
247 #undef PREFERRED_DEBUGGING_TYPE | |
248 #define PREFERRED_DEBUGGING_TYPE (TARGET_64BIT ? DWARF2_DEBUG : DBX_DEBUG) | |
249 #endif | |
250 | |
251 /* Darwin uses the standard DWARF register numbers but the default | |
252 register numbers for STABS. Fortunately for 64-bit code the | |
253 default and the standard are the same. */ | |
254 #undef DBX_REGISTER_NUMBER | |
255 #define DBX_REGISTER_NUMBER(n) \ | |
256 (TARGET_64BIT ? dbx64_register_map[n] \ | |
257 : write_symbols == DWARF2_DEBUG ? svr4_dbx_register_map[n] \ | |
258 : dbx_register_map[n]) | |
259 | |
260 /* Unfortunately, the 32-bit EH information also doesn't use the standard | |
261 DWARF register numbers. */ | |
262 #define DWARF2_FRAME_REG_OUT(n, for_eh) \ | |
263 (! (for_eh) || write_symbols != DWARF2_DEBUG || TARGET_64BIT ? (n) \ | |
264 : (n) == 5 ? 4 \ | |
265 : (n) == 4 ? 5 \ | |
266 : (n) >= 11 && (n) <= 18 ? (n) + 1 \ | |
267 : (n)) | |
268 | |
269 #undef REGISTER_SUBTARGET_PRAGMAS | |
270 #define REGISTER_SUBTARGET_PRAGMAS() DARWIN_REGISTER_TARGET_PRAGMAS() | |
271 | |
272 #undef TARGET_SET_DEFAULT_TYPE_ATTRIBUTES | |
273 #define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES darwin_set_default_type_attributes | |
274 | |
275 /* For 64-bit, we need to add 4 because @GOTPCREL is relative to the | |
276 end of the instruction, but without the 4 we'd only have the right | |
277 address for the start of the instruction. */ | |
278 #undef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX | |
279 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \ | |
280 if (TARGET_64BIT) \ | |
281 { \ | |
282 if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_pcrel) \ | |
283 { \ | |
284 fputs (ASM_LONG, FILE); \ | |
285 assemble_name (FILE, XSTR (ADDR, 0)); \ | |
286 fputs ("+4@GOTPCREL", FILE); \ | |
287 goto DONE; \ | |
288 } \ | |
289 } \ | |
290 else \ | |
291 { \ | |
292 if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) \ | |
293 { \ | |
294 darwin_non_lazy_pcrel (FILE, ADDR); \ | |
295 goto DONE; \ | |
296 } \ | |
297 } | |
298 | |
299 /* This needs to move since i386 uses the first flag and other flags are | |
300 used in Mach-O. */ | |
301 #undef MACHO_SYMBOL_FLAG_VARIABLE | |
302 #define MACHO_SYMBOL_FLAG_VARIABLE ((SYMBOL_FLAG_MACH_DEP) << 3) |