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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [config/] [i386/] [darwin.h] - Blame information for rev 709

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1 709 jeremybenn
/* Target definitions for x86 running Darwin.
2
   Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2010, 2011
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
#undef DARWIN_X86
27
#define DARWIN_X86 1
28
 
29
#undef  TARGET_64BIT
30
#define TARGET_64BIT OPTION_ISA_64BIT
31
 
32
#ifdef IN_LIBGCC2
33
#undef TARGET_64BIT
34
#ifdef __x86_64__
35
#define TARGET_64BIT 1
36
#else
37
#define TARGET_64BIT 0
38
#endif
39
#endif
40
 
41
/* Size of the Obj-C jump buffer.  */
42
#define OBJC_JBLEN ((TARGET_64BIT) ? ((9 * 2) + 3 + 16) : (18))
43
 
44
#undef TARGET_FPMATH_DEFAULT
45
#define TARGET_FPMATH_DEFAULT (TARGET_SSE ? FPMATH_SSE : FPMATH_387)
46
 
47
#define TARGET_OS_CPP_BUILTINS()                \
48
  do                                            \
49
    {                                           \
50
      builtin_define ("__LITTLE_ENDIAN__");     \
51
      darwin_cpp_builtins (pfile);              \
52
    }                                           \
53
  while (0)
54
 
55
#undef PTRDIFF_TYPE
56
#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
57
 
58
#undef WCHAR_TYPE
59
#define WCHAR_TYPE "int"
60
 
61
#undef WCHAR_TYPE_SIZE
62
#define WCHAR_TYPE_SIZE 32
63
 
64
/* Generate branch islands stubs if this is true.  */
65
extern int darwin_emit_branch_islands;
66
 
67
#undef TARGET_MACHO_BRANCH_ISLANDS
68
#define TARGET_MACHO_BRANCH_ISLANDS darwin_emit_branch_islands
69
 
70
/* For compatibility with OSX system tools, use the new style of pic stub
71
   if this is set.  */
72
#undef  MACHOPIC_ATT_STUB
73
#define MACHOPIC_ATT_STUB (darwin_macho_att_stub)
74
 
75
#undef MAX_BITS_PER_WORD
76
#define MAX_BITS_PER_WORD 64
77
 
78
#undef FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN
79
#define FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN (0)
80
 
81
#undef TARGET_KEEPS_VECTOR_ALIGNED_STACK
82
#define TARGET_KEEPS_VECTOR_ALIGNED_STACK 1
83
 
84
/* On Darwin, the stack is 128-bit aligned at the point of every call.
85
   Failure to ensure this will lead to a crash in the system libraries
86
   or dynamic loader.  */
87
#undef STACK_BOUNDARY
88
#define STACK_BOUNDARY \
89
 ((profile_flag || (TARGET_64BIT && ix86_abi == MS_ABI)) \
90
  ? 128 : BITS_PER_WORD)
91
 
92
#undef MAIN_STACK_BOUNDARY
93
#define MAIN_STACK_BOUNDARY 128
94
 
95
/* Since we'll never want a stack boundary less aligned than 128 bits
96
   we need the extra work here otherwise bits of gcc get very grumpy
97
   when we ask for lower alignment.  We could just reject values less
98
   than 128 bits for Darwin, but it's easier to up the alignment if
99
   it's below the minimum.  */
100
#undef PREFERRED_STACK_BOUNDARY
101
#define PREFERRED_STACK_BOUNDARY                        \
102
  MAX (128, ix86_preferred_stack_boundary)
103
 
104
/* We want -fPIC by default, unless we're using -static to compile for
105
   the kernel or some such.  */
106
 
107
#undef CC1_SPEC
108
#define CC1_SPEC "%(cc1_cpu) \
109
  %{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}} \
110
  %{!mmacosx-version-min=*:-mmacosx-version-min=%(darwin_minversion)} \
111
  %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }} " \
112
  DARWIN_CC1_SPEC
113
 
114
#undef ASM_SPEC
115
#define ASM_SPEC "-arch %(darwin_arch) -force_cpusubtype_ALL \
116
  %{static}"
117
 
118
#define DARWIN_ARCH_SPEC "%{m64:x86_64;:i386}"
119
#define DARWIN_SUBARCH_SPEC DARWIN_ARCH_SPEC
120
 
121
/* Determine a minimum version based on compiler options.  */
122
#define DARWIN_MINVERSION_SPEC                          \
123
 "%{!m64|fgnu-runtime:10.4;                             \
124
    ,objective-c|,objc-cpp-output:10.5;                 \
125
    ,objective-c-header:10.5;                           \
126
    ,objective-c++|,objective-c++-cpp-output:10.5;      \
127
    ,objective-c++-header|,objc++-cpp-output:10.5;      \
128
    :10.4}"
129
 
130
#undef ENDFILE_SPEC
131
#define ENDFILE_SPEC \
132
  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
133
   %{mpc32:crtprec32.o%s} \
134
   %{mpc64:crtprec64.o%s} \
135
   %{mpc80:crtprec80.o%s} \
136
   %{fgnu-tm: -lcrttme.o}"
137
 
138
#undef SUBTARGET_EXTRA_SPECS
139
#define SUBTARGET_EXTRA_SPECS                                   \
140
  DARWIN_EXTRA_SPECS                                            \
141
  { "darwin_arch", DARWIN_ARCH_SPEC },                          \
142
  { "darwin_crt2", "" },                                        \
143
  { "darwin_subarch", DARWIN_SUBARCH_SPEC },
144
 
145
/* The Darwin assembler mostly follows AT&T syntax.  */
146
#undef ASSEMBLER_DIALECT
147
#define ASSEMBLER_DIALECT ASM_ATT
148
 
149
/* Define macro used to output shift-double opcodes when the shift
150
   count is in %cl.  Some assemblers require %cl as an argument;
151
   some don't.  This macro controls what to do: by default, don't
152
   print %cl.  */
153
 
154
#define SHIFT_DOUBLE_OMITS_COUNT 0
155
 
156
/* Put all *tf routines in libgcc.  */
157
#undef LIBGCC2_HAS_TF_MODE
158
#define LIBGCC2_HAS_TF_MODE 1
159
#define LIBGCC2_TF_CEXT q
160
#define TF_SIZE 113
161
 
162
#undef TARGET_ASM_FILE_END
163
#define TARGET_ASM_FILE_END darwin_file_end
164
 
165
/* Define the syntax of pseudo-ops, labels and comments.  */
166
 
167
/* String containing the assembler's comment-starter.  */
168
 
169
#define ASM_COMMENT_START "#"
170
 
171
/* By default, target has a 80387, uses IEEE compatible arithmetic,
172
   and returns float values in the 387.  */
173
 
174
#undef TARGET_SUBTARGET_DEFAULT
175
#define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_128BIT_LONG_DOUBLE)
176
 
177
/* For darwin we want to target specific processor features as a minimum,
178
   but these unfortunately don't correspond to a specific processor.  */
179
#undef TARGET_SUBTARGET32_ISA_DEFAULT
180
#define TARGET_SUBTARGET32_ISA_DEFAULT (OPTION_MASK_ISA_MMX             \
181
                                        | OPTION_MASK_ISA_SSE           \
182
                                        | OPTION_MASK_ISA_SSE2          \
183
                                        | OPTION_MASK_ISA_SSE3)
184
 
185
#undef TARGET_SUBTARGET64_ISA_DEFAULT
186
#define TARGET_SUBTARGET64_ISA_DEFAULT TARGET_SUBTARGET32_ISA_DEFAULT
187
 
188
#undef GOT_SYMBOL_NAME
189
#define GOT_SYMBOL_NAME MACHOPIC_FUNCTION_BASE_NAME
190
 
191
/* Define the syntax of pseudo-ops, labels and comments.  */
192
 
193
#define LPREFIX "L"
194
 
195
/* Assembler pseudos to introduce constants of various size.  */
196
 
197
#define ASM_BYTE "\t.byte\t"
198
#define ASM_SHORT "\t.word\t"
199
#define ASM_LONG "\t.long\t"
200
#define ASM_QUAD "\t.quad\t"
201
 
202
#define SUBTARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
203
 
204
#undef ASM_OUTPUT_ALIGN
205
#define ASM_OUTPUT_ALIGN(FILE,LOG)      \
206
 do { if ((LOG) != 0)                    \
207
        {                               \
208
          if (in_section == text_section) \
209
            fprintf (FILE, "\t%s %d,0x90\n", ALIGN_ASM_OP, (LOG)); \
210
          else                          \
211
            fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG)); \
212
        }                               \
213
    } while (0)
214
 
215
/* Darwin profiling -- call mcount.  */
216
#undef FUNCTION_PROFILER
217
#define FUNCTION_PROFILER(FILE, LABELNO)                                \
218
    do {                                                                \
219
      if (TARGET_MACHO_BRANCH_ISLANDS                                   \
220
           && MACHOPIC_INDIRECT && !TARGET_64BIT)                       \
221
        {                                                               \
222
          const char *name = machopic_mcount_stub_name ();              \
223
          fprintf (FILE, "\tcall %s\n", name+1);  /*  skip '&'  */      \
224
          machopic_validate_stub_or_non_lazy_ptr (name);                \
225
        }                                                               \
226
      else fprintf (FILE, "\tcall mcount\n");                           \
227
    } while (0)
228
 
229
#define C_COMMON_OVERRIDE_OPTIONS                                       \
230
  do {                                                                  \
231
    SUBTARGET_C_COMMON_OVERRIDE_OPTIONS;                                \
232
  } while (0)
233
 
234
#undef SUBTARGET_OVERRIDE_OPTIONS
235
#define SUBTARGET_OVERRIDE_OPTIONS \
236
do {                                                                    \
237
  if (TARGET_64BIT && MACHO_DYNAMIC_NO_PIC_P)                           \
238
    target_flags &= ~MASK_MACHO_DYNAMIC_NO_PIC;                         \
239
} while (0)
240
 
241
/* Darwin on x86_64 uses dwarf-2 by default.  Pre-darwin9 32-bit
242
   compiles default to stabs+.  darwin9+ defaults to dwarf-2.  */
243
#ifndef DARWIN_PREFER_DWARF
244
#undef PREFERRED_DEBUGGING_TYPE
245
#define PREFERRED_DEBUGGING_TYPE (TARGET_64BIT ? DWARF2_DEBUG : DBX_DEBUG)
246
#endif
247
 
248
/* Darwin uses the standard DWARF register numbers but the default
249
   register numbers for STABS.  Fortunately for 64-bit code the
250
   default and the standard are the same.  */
251
#undef DBX_REGISTER_NUMBER
252
#define DBX_REGISTER_NUMBER(n)                                  \
253
  (TARGET_64BIT ? dbx64_register_map[n]                         \
254
   : write_symbols == DWARF2_DEBUG ? svr4_dbx_register_map[n]   \
255
   : dbx_register_map[n])
256
 
257
/* Unfortunately, the 32-bit EH information also doesn't use the standard
258
   DWARF register numbers.  */
259
#define DWARF2_FRAME_REG_OUT(n, for_eh)                                 \
260
  (! (for_eh) || write_symbols != DWARF2_DEBUG || TARGET_64BIT ? (n)    \
261
   : (n) == 5 ? 4                                                       \
262
   : (n) == 4 ? 5                                                       \
263
   : (n) >= 11 && (n) <= 18 ? (n) + 1                                   \
264
   : (n))
265
 
266
#undef REGISTER_SUBTARGET_PRAGMAS
267
#define REGISTER_SUBTARGET_PRAGMAS() DARWIN_REGISTER_TARGET_PRAGMAS()
268
 
269
#undef TARGET_SET_DEFAULT_TYPE_ATTRIBUTES
270
#define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES darwin_set_default_type_attributes
271
 
272
/* For 64-bit, we need to add 4 because @GOTPCREL is relative to the
273
   end of the instruction, but without the 4 we'd only have the right
274
   address for the start of the instruction.  */
275
#undef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
276
#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE)     \
277
  if (TARGET_64BIT)                                                             \
278
    {                                                                           \
279
      if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_pcrel)                 \
280
        {                                                                       \
281
           fputs (ASM_LONG, FILE);                                              \
282
           assemble_name (FILE, XSTR (ADDR, 0));                         \
283
           fputs ("+4@GOTPCREL", FILE);                                         \
284
           goto DONE;                                                           \
285
        }                                                                       \
286
    }                                                                           \
287
  else                                                                          \
288
    {                                                                           \
289
      if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1))                      \
290
        {                                                                       \
291
          darwin_non_lazy_pcrel (FILE, ADDR);                                   \
292
          goto DONE;                                                            \
293
        }                                                                       \
294
    }
295
 
296
/* This needs to move since i386 uses the first flag and other flags are
297
   used in Mach-O.  */
298
#undef MACHO_SYMBOL_FLAG_VARIABLE
299
#define MACHO_SYMBOL_FLAG_VARIABLE ((SYMBOL_FLAG_MACH_DEP) << 3)
300
 
301
#undef MACHOPIC_NL_SYMBOL_PTR_SECTION
302
#define MACHOPIC_NL_SYMBOL_PTR_SECTION \
303
                ".section __IMPORT,__pointers,non_lazy_symbol_pointers"
304
 
305
#define SUBTARGET32_DEFAULT_CPU "i686"
306
 
307
#undef  SUBTARGET_INIT_BUILTINS
308
#define SUBTARGET_INIT_BUILTINS                                 \
309
do {                                                            \
310
  ix86_builtins[(int) IX86_BUILTIN_CFSTRING]                    \
311
    = darwin_init_cfstring_builtins ((unsigned) (IX86_BUILTIN_CFSTRING));       \
312
  darwin_rename_builtins ();                                    \
313
} while(0)

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