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709 |
jeremybenn |
/* Target definitions for x86 running Darwin.
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Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2010, 2011
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Free Software Foundation, Inc.
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Contributed by Apple Computer Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* Enable Mach-O bits in generic x86 code. */
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#undef TARGET_MACHO
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#define TARGET_MACHO 1
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#undef DARWIN_X86
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#define DARWIN_X86 1
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#undef TARGET_64BIT
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#define TARGET_64BIT OPTION_ISA_64BIT
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#ifdef IN_LIBGCC2
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#undef TARGET_64BIT
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#ifdef __x86_64__
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#define TARGET_64BIT 1
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#else
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#define TARGET_64BIT 0
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#endif
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#endif
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/* Size of the Obj-C jump buffer. */
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#define OBJC_JBLEN ((TARGET_64BIT) ? ((9 * 2) + 3 + 16) : (18))
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#undef TARGET_FPMATH_DEFAULT
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#define TARGET_FPMATH_DEFAULT (TARGET_SSE ? FPMATH_SSE : FPMATH_387)
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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builtin_define ("__LITTLE_ENDIAN__"); \
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darwin_cpp_builtins (pfile); \
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} \
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while (0)
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 32
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/* Generate branch islands stubs if this is true. */
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extern int darwin_emit_branch_islands;
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#undef TARGET_MACHO_BRANCH_ISLANDS
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#define TARGET_MACHO_BRANCH_ISLANDS darwin_emit_branch_islands
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/* For compatibility with OSX system tools, use the new style of pic stub
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if this is set. */
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#undef MACHOPIC_ATT_STUB
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#define MACHOPIC_ATT_STUB (darwin_macho_att_stub)
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#undef MAX_BITS_PER_WORD
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#define MAX_BITS_PER_WORD 64
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#undef FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN
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#define FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN (0)
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#undef TARGET_KEEPS_VECTOR_ALIGNED_STACK
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#define TARGET_KEEPS_VECTOR_ALIGNED_STACK 1
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/* On Darwin, the stack is 128-bit aligned at the point of every call.
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Failure to ensure this will lead to a crash in the system libraries
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or dynamic loader. */
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#undef STACK_BOUNDARY
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#define STACK_BOUNDARY \
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((profile_flag || (TARGET_64BIT && ix86_abi == MS_ABI)) \
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? 128 : BITS_PER_WORD)
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#undef MAIN_STACK_BOUNDARY
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#define MAIN_STACK_BOUNDARY 128
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/* Since we'll never want a stack boundary less aligned than 128 bits
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we need the extra work here otherwise bits of gcc get very grumpy
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when we ask for lower alignment. We could just reject values less
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than 128 bits for Darwin, but it's easier to up the alignment if
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it's below the minimum. */
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#undef PREFERRED_STACK_BOUNDARY
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#define PREFERRED_STACK_BOUNDARY \
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MAX (128, ix86_preferred_stack_boundary)
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/* We want -fPIC by default, unless we're using -static to compile for
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the kernel or some such. */
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#undef CC1_SPEC
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#define CC1_SPEC "%(cc1_cpu) \
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%{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}} \
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%{!mmacosx-version-min=*:-mmacosx-version-min=%(darwin_minversion)} \
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%{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }} " \
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DARWIN_CC1_SPEC
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#undef ASM_SPEC
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#define ASM_SPEC "-arch %(darwin_arch) -force_cpusubtype_ALL \
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%{static}"
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#define DARWIN_ARCH_SPEC "%{m64:x86_64;:i386}"
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#define DARWIN_SUBARCH_SPEC DARWIN_ARCH_SPEC
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/* Determine a minimum version based on compiler options. */
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#define DARWIN_MINVERSION_SPEC \
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"%{!m64|fgnu-runtime:10.4; \
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,objective-c|,objc-cpp-output:10.5; \
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,objective-c-header:10.5; \
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,objective-c++|,objective-c++-cpp-output:10.5; \
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,objective-c++-header|,objc++-cpp-output:10.5; \
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:10.4}"
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC \
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"%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
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%{mpc32:crtprec32.o%s} \
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%{mpc64:crtprec64.o%s} \
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%{mpc80:crtprec80.o%s} \
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%{fgnu-tm: -lcrttme.o}"
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| 138 |
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#undef SUBTARGET_EXTRA_SPECS
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#define SUBTARGET_EXTRA_SPECS \
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DARWIN_EXTRA_SPECS \
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{ "darwin_arch", DARWIN_ARCH_SPEC }, \
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{ "darwin_crt2", "" }, \
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{ "darwin_subarch", DARWIN_SUBARCH_SPEC },
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/* The Darwin assembler mostly follows AT&T syntax. */
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#undef ASSEMBLER_DIALECT
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#define ASSEMBLER_DIALECT ASM_ATT
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/* Define macro used to output shift-double opcodes when the shift
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count is in %cl. Some assemblers require %cl as an argument;
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some don't. This macro controls what to do: by default, don't
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print %cl. */
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#define SHIFT_DOUBLE_OMITS_COUNT 0
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| 156 |
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/* Put all *tf routines in libgcc. */
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#undef LIBGCC2_HAS_TF_MODE
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#define LIBGCC2_HAS_TF_MODE 1
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#define LIBGCC2_TF_CEXT q
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#define TF_SIZE 113
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| 162 |
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#undef TARGET_ASM_FILE_END
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#define TARGET_ASM_FILE_END darwin_file_end
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/* Define the syntax of pseudo-ops, labels and comments. */
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/* String containing the assembler's comment-starter. */
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| 169 |
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#define ASM_COMMENT_START "#"
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| 171 |
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/* By default, target has a 80387, uses IEEE compatible arithmetic,
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and returns float values in the 387. */
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| 174 |
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#undef TARGET_SUBTARGET_DEFAULT
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#define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_128BIT_LONG_DOUBLE)
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| 177 |
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/* For darwin we want to target specific processor features as a minimum,
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but these unfortunately don't correspond to a specific processor. */
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#undef TARGET_SUBTARGET32_ISA_DEFAULT
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#define TARGET_SUBTARGET32_ISA_DEFAULT (OPTION_MASK_ISA_MMX \
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| OPTION_MASK_ISA_SSE \
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| OPTION_MASK_ISA_SSE2 \
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| OPTION_MASK_ISA_SSE3)
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| 185 |
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#undef TARGET_SUBTARGET64_ISA_DEFAULT
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#define TARGET_SUBTARGET64_ISA_DEFAULT TARGET_SUBTARGET32_ISA_DEFAULT
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| 188 |
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#undef GOT_SYMBOL_NAME
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#define GOT_SYMBOL_NAME MACHOPIC_FUNCTION_BASE_NAME
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| 190 |
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| 191 |
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/* Define the syntax of pseudo-ops, labels and comments. */
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| 192 |
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| 193 |
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#define LPREFIX "L"
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| 194 |
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| 195 |
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/* Assembler pseudos to introduce constants of various size. */
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| 197 |
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#define ASM_BYTE "\t.byte\t"
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#define ASM_SHORT "\t.word\t"
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#define ASM_LONG "\t.long\t"
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| 200 |
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#define ASM_QUAD "\t.quad\t"
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| 202 |
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#define SUBTARGET_ENCODE_SECTION_INFO darwin_encode_section_info
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| 203 |
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| 204 |
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#undef ASM_OUTPUT_ALIGN
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#define ASM_OUTPUT_ALIGN(FILE,LOG) \
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do { if ((LOG) != 0) \
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{ \
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if (in_section == text_section) \
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fprintf (FILE, "\t%s %d,0x90\n", ALIGN_ASM_OP, (LOG)); \
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else \
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fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG)); \
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| 212 |
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} \
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| 213 |
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} while (0)
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| 214 |
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| 215 |
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/* Darwin profiling -- call mcount. */
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| 216 |
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#undef FUNCTION_PROFILER
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| 217 |
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#define FUNCTION_PROFILER(FILE, LABELNO) \
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| 218 |
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do { \
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| 219 |
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if (TARGET_MACHO_BRANCH_ISLANDS \
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| 220 |
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&& MACHOPIC_INDIRECT && !TARGET_64BIT) \
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| 221 |
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{ \
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| 222 |
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const char *name = machopic_mcount_stub_name (); \
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| 223 |
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fprintf (FILE, "\tcall %s\n", name+1); /* skip '&' */ \
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| 224 |
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machopic_validate_stub_or_non_lazy_ptr (name); \
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| 225 |
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} \
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| 226 |
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else fprintf (FILE, "\tcall mcount\n"); \
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| 227 |
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} while (0)
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| 228 |
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| 229 |
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#define C_COMMON_OVERRIDE_OPTIONS \
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| 230 |
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do { \
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| 231 |
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SUBTARGET_C_COMMON_OVERRIDE_OPTIONS; \
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| 232 |
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} while (0)
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| 233 |
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| 234 |
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#undef SUBTARGET_OVERRIDE_OPTIONS
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| 235 |
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#define SUBTARGET_OVERRIDE_OPTIONS \
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| 236 |
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do { \
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| 237 |
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if (TARGET_64BIT && MACHO_DYNAMIC_NO_PIC_P) \
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| 238 |
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target_flags &= ~MASK_MACHO_DYNAMIC_NO_PIC; \
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| 239 |
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} while (0)
|
| 240 |
|
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| 241 |
|
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/* Darwin on x86_64 uses dwarf-2 by default. Pre-darwin9 32-bit
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| 242 |
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compiles default to stabs+. darwin9+ defaults to dwarf-2. */
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| 243 |
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#ifndef DARWIN_PREFER_DWARF
|
| 244 |
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#undef PREFERRED_DEBUGGING_TYPE
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| 245 |
|
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#define PREFERRED_DEBUGGING_TYPE (TARGET_64BIT ? DWARF2_DEBUG : DBX_DEBUG)
|
| 246 |
|
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#endif
|
| 247 |
|
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|
| 248 |
|
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/* Darwin uses the standard DWARF register numbers but the default
|
| 249 |
|
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register numbers for STABS. Fortunately for 64-bit code the
|
| 250 |
|
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default and the standard are the same. */
|
| 251 |
|
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#undef DBX_REGISTER_NUMBER
|
| 252 |
|
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#define DBX_REGISTER_NUMBER(n) \
|
| 253 |
|
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(TARGET_64BIT ? dbx64_register_map[n] \
|
| 254 |
|
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: write_symbols == DWARF2_DEBUG ? svr4_dbx_register_map[n] \
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| 255 |
|
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: dbx_register_map[n])
|
| 256 |
|
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|
| 257 |
|
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/* Unfortunately, the 32-bit EH information also doesn't use the standard
|
| 258 |
|
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DWARF register numbers. */
|
| 259 |
|
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#define DWARF2_FRAME_REG_OUT(n, for_eh) \
|
| 260 |
|
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(! (for_eh) || write_symbols != DWARF2_DEBUG || TARGET_64BIT ? (n) \
|
| 261 |
|
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: (n) == 5 ? 4 \
|
| 262 |
|
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: (n) == 4 ? 5 \
|
| 263 |
|
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: (n) >= 11 && (n) <= 18 ? (n) + 1 \
|
| 264 |
|
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: (n))
|
| 265 |
|
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|
| 266 |
|
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#undef REGISTER_SUBTARGET_PRAGMAS
|
| 267 |
|
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#define REGISTER_SUBTARGET_PRAGMAS() DARWIN_REGISTER_TARGET_PRAGMAS()
|
| 268 |
|
|
|
| 269 |
|
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#undef TARGET_SET_DEFAULT_TYPE_ATTRIBUTES
|
| 270 |
|
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#define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES darwin_set_default_type_attributes
|
| 271 |
|
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|
| 272 |
|
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/* 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 |
|
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address for the start of the instruction. */
|
| 275 |
|
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#undef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
|
| 276 |
|
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#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
|
| 277 |
|
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if (TARGET_64BIT) \
|
| 278 |
|
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{ \
|
| 279 |
|
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if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_pcrel) \
|
| 280 |
|
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{ \
|
| 281 |
|
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fputs (ASM_LONG, FILE); \
|
| 282 |
|
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assemble_name (FILE, XSTR (ADDR, 0)); \
|
| 283 |
|
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fputs ("+4@GOTPCREL", FILE); \
|
| 284 |
|
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goto DONE; \
|
| 285 |
|
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} \
|
| 286 |
|
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} \
|
| 287 |
|
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else \
|
| 288 |
|
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{ \
|
| 289 |
|
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if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) \
|
| 290 |
|
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{ \
|
| 291 |
|
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darwin_non_lazy_pcrel (FILE, ADDR); \
|
| 292 |
|
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goto DONE; \
|
| 293 |
|
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} \
|
| 294 |
|
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}
|
| 295 |
|
|
|
| 296 |
|
|
/* This needs to move since i386 uses the first flag and other flags are
|
| 297 |
|
|
used in Mach-O. */
|
| 298 |
|
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#undef MACHO_SYMBOL_FLAG_VARIABLE
|
| 299 |
|
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#define MACHO_SYMBOL_FLAG_VARIABLE ((SYMBOL_FLAG_MACH_DEP) << 3)
|
| 300 |
|
|
|
| 301 |
|
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#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)
|
