--- /dev/null
+/* Target definitions for x86 running Darwin.
+ Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008
+ Free Software Foundation, Inc.
+ Contributed by Apple Computer Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+/* Enable Mach-O bits in generic x86 code. */
+#undef TARGET_MACHO
+#define TARGET_MACHO 1
+
+#define TARGET_VERSION fprintf (stderr, " (i686 Darwin)");
+
+#undef TARGET_64BIT
+#define TARGET_64BIT OPTION_ISA_64BIT
+
+#ifdef IN_LIBGCC2
+#undef TARGET_64BIT
+#ifdef __x86_64__
+#define TARGET_64BIT 1
+#else
+#define TARGET_64BIT 0
+#endif
+#endif
+
+/* Size of the Obj-C jump buffer. */
+#define OBJC_JBLEN ((TARGET_64BIT) ? ((9 * 2) + 3 + 16) : (18))
+
+#undef TARGET_FPMATH_DEFAULT
+#define TARGET_FPMATH_DEFAULT (TARGET_SSE ? FPMATH_SSE : FPMATH_387)
+
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define ("__LITTLE_ENDIAN__"); \
+ darwin_cpp_builtins (pfile); \
+ } \
+ while (0)
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+#undef MAX_BITS_PER_WORD
+#define MAX_BITS_PER_WORD 64
+
+#undef FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN
+#define FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN (0)
+
+#undef TARGET_KEEPS_VECTOR_ALIGNED_STACK
+#define TARGET_KEEPS_VECTOR_ALIGNED_STACK 1
+
+/* On Darwin, the stack is 128-bit aligned at the point of every call.
+ Failure to ensure this will lead to a crash in the system libraries
+ or dynamic loader. */
+#undef STACK_BOUNDARY
+#define STACK_BOUNDARY 128
+
+#undef MAIN_STACK_BOUNDARY
+#define MAIN_STACK_BOUNDARY 128
+
+/* Since we'll never want a stack boundary less aligned than 128 bits
+ we need the extra work here otherwise bits of gcc get very grumpy
+ when we ask for lower alignment. We could just reject values less
+ than 128 bits for Darwin, but it's easier to up the alignment if
+ it's below the minimum. */
+#undef PREFERRED_STACK_BOUNDARY
+#define PREFERRED_STACK_BOUNDARY \
+ MAX (STACK_BOUNDARY, ix86_preferred_stack_boundary)
+
+/* We want -fPIC by default, unless we're using -static to compile for
+ the kernel or some such. */
+
+#undef CC1_SPEC
+#define CC1_SPEC "%(cc1_cpu) \
+ %{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}} \
+ %{!mmacosx-version-min=*:-mmacosx-version-min=%(darwin_minversion)} \
+ %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }}"
+
+#undef ASM_SPEC
+#define ASM_SPEC "-arch %(darwin_arch) -force_cpusubtype_ALL"
+
+#define DARWIN_ARCH_SPEC "%{m64:x86_64;:i386}"
+#define DARWIN_SUBARCH_SPEC DARWIN_ARCH_SPEC
+
+/* Determine a minimum version based on compiler options. */
+#define DARWIN_MINVERSION_SPEC \
+ "%{!m64|fgnu-runtime:10.4; \
+ ,objective-c|,objc-cpp-output:10.5; \
+ ,objective-c-header:10.5; \
+ ,objective-c++|,objective-c++-cpp-output:10.5; \
+ ,objective-c++-header|,objc++-cpp-output:10.5; \
+ :10.4}"
+
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC \
+ "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
+ %{mpc32:crtprec32.o%s} \
+ %{mpc64:crtprec64.o%s} \
+ %{mpc80:crtprec80.o%s}"
+
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS \
+ DARWIN_EXTRA_SPECS \
+ { "darwin_arch", DARWIN_ARCH_SPEC }, \
+ { "darwin_crt2", "" }, \
+ { "darwin_subarch", DARWIN_SUBARCH_SPEC },
+
+/* Use the following macro for any Darwin/x86-specific command-line option
+ translation. */
+#define SUBTARGET_OPTION_TRANSLATE_TABLE \
+ { "", "" }
+
+/* The Darwin assembler mostly follows AT&T syntax. */
+#undef ASSEMBLER_DIALECT
+#define ASSEMBLER_DIALECT ASM_ATT
+
+/* Define macro used to output shift-double opcodes when the shift
+ count is in %cl. Some assemblers require %cl as an argument;
+ some don't. This macro controls what to do: by default, don't
+ print %cl. */
+
+#define SHIFT_DOUBLE_OMITS_COUNT 0
+
+extern void darwin_x86_file_end (void);
+#undef TARGET_ASM_FILE_END
+#define TARGET_ASM_FILE_END darwin_x86_file_end
+
+/* Define the syntax of pseudo-ops, labels and comments. */
+
+/* String containing the assembler's comment-starter. */
+
+#define ASM_COMMENT_START "#"
+
+/* By default, target has a 80387, uses IEEE compatible arithmetic,
+ and returns float values in the 387. */
+
+#undef TARGET_SUBTARGET_DEFAULT
+#define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_128BIT_LONG_DOUBLE)
+
+/* For darwin we want to target specific processor features as a minimum,
+ but these unfortunately don't correspond to a specific processor. */
+#undef TARGET_SUBTARGET32_ISA_DEFAULT
+#define TARGET_SUBTARGET32_ISA_DEFAULT (OPTION_MASK_ISA_MMX \
+ | OPTION_MASK_ISA_SSE \
+ | OPTION_MASK_ISA_SSE2)
+
+#undef TARGET_SUBTARGET64_ISA_DEFAULT
+#define TARGET_SUBTARGET64_ISA_DEFAULT (OPTION_MASK_ISA_MMX \
+ | OPTION_MASK_ISA_SSE \
+ | OPTION_MASK_ISA_SSE2 \
+ | OPTION_MASK_ISA_SSE3)
+
+/* For now, disable dynamic-no-pic. We'll need to go through i386.c
+ with a fine-tooth comb looking for refs to flag_pic! */
+#define MASK_MACHO_DYNAMIC_NO_PIC 0
+#define TARGET_DYNAMIC_NO_PIC (target_flags & MASK_MACHO_DYNAMIC_NO_PIC)
+
+#undef GOT_SYMBOL_NAME
+#define GOT_SYMBOL_NAME MACHOPIC_FUNCTION_BASE_NAME
+
+/* Define the syntax of pseudo-ops, labels and comments. */
+
+#define LPREFIX "L"
+
+/* These are used by -fbranch-probabilities */
+#define HOT_TEXT_SECTION_NAME "__TEXT,__text,regular,pure_instructions"
+#define UNLIKELY_EXECUTED_TEXT_SECTION_NAME \
+ "__TEXT,__unlikely,regular,pure_instructions"
+
+/* Assembler pseudos to introduce constants of various size. */
+
+#define ASM_BYTE_OP "\t.byte\t"
+#define ASM_SHORT "\t.word\t"
+#define ASM_LONG "\t.long\t"
+#define ASM_QUAD "\t.quad\t"
+
+#define SUBTARGET_ENCODE_SECTION_INFO darwin_encode_section_info
+
+#undef ASM_OUTPUT_ALIGN
+#define ASM_OUTPUT_ALIGN(FILE,LOG) \
+ do { if ((LOG) != 0) \
+ { \
+ if (in_section == text_section) \
+ fprintf (FILE, "\t%s %d,0x90\n", ALIGN_ASM_OP, (LOG)); \
+ else \
+ fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG)); \
+ } \
+ } while (0)
+
+/* This says how to output an assembler line
+ to define a global common symbol. */
+
+#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
+( fputs (".comm ", (FILE)), \
+ assemble_name ((FILE), (NAME)), \
+ fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (ROUNDED)))
+
+/* This says how to output an assembler line
+ to define a local common symbol. */
+
+#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
+( fputs (".lcomm ", (FILE)), \
+ assemble_name ((FILE), (NAME)), \
+ fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (ROUNDED)))
+
+/* Darwin profiling -- call mcount. */
+#undef FUNCTION_PROFILER
+#define FUNCTION_PROFILER(FILE, LABELNO) \
+ do { \
+ if (MACHOPIC_INDIRECT && !TARGET_64BIT) \
+ { \
+ const char *name = machopic_mcount_stub_name (); \
+ fprintf (FILE, "\tcall %s\n", name+1); /* skip '&' */ \
+ machopic_validate_stub_or_non_lazy_ptr (name); \
+ } \
+ else fprintf (FILE, "\tcall mcount\n"); \
+ } while (0)
+
+#define C_COMMON_OVERRIDE_OPTIONS \
+ do { \
+ SUBTARGET_C_COMMON_OVERRIDE_OPTIONS; \
+ } while (0)
+
+/* Darwin on x86_64 uses dwarf-2 by default. Pre-darwin9 32-bit
+ compiles default to stabs+. darwin9+ defaults to dwarf-2. */
+#ifndef DARWIN_PREFER_DWARF
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE (TARGET_64BIT ? DWARF2_DEBUG : DBX_DEBUG)
+#endif
+
+/* Darwin uses the standard DWARF register numbers but the default
+ register numbers for STABS. Fortunately for 64-bit code the
+ default and the standard are the same. */
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(n) \
+ (TARGET_64BIT ? dbx64_register_map[n] \
+ : write_symbols == DWARF2_DEBUG ? svr4_dbx_register_map[n] \
+ : dbx_register_map[n])
+
+/* Unfortunately, the 32-bit EH information also doesn't use the standard
+ DWARF register numbers. */
+#define DWARF2_FRAME_REG_OUT(n, for_eh) \
+ (! (for_eh) || write_symbols != DWARF2_DEBUG || TARGET_64BIT ? (n) \
+ : (n) == 5 ? 4 \
+ : (n) == 4 ? 5 \
+ : (n) >= 11 && (n) <= 18 ? (n) + 1 \
+ : (n))
+
+#undef REGISTER_SUBTARGET_PRAGMAS
+#define REGISTER_SUBTARGET_PRAGMAS() DARWIN_REGISTER_TARGET_PRAGMAS()
+
+#undef TARGET_SET_DEFAULT_TYPE_ATTRIBUTES
+#define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES darwin_set_default_type_attributes
+
+/* For 64-bit, we need to add 4 because @GOTPCREL is relative to the
+ end of the instruction, but without the 4 we'd only have the right
+ address for the start of the instruction. */
+#undef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
+#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
+ if (TARGET_64BIT) \
+ { \
+ if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_pcrel) \
+ { \
+ fputs (ASM_LONG, FILE); \
+ assemble_name (FILE, XSTR (ADDR, 0)); \
+ fputs ("+4@GOTPCREL", FILE); \
+ goto DONE; \
+ } \
+ } \
+ else \
+ { \
+ if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) \
+ { \
+ darwin_non_lazy_pcrel (FILE, ADDR); \
+ goto DONE; \
+ } \
+ }
+
+/* This needs to move since i386 uses the first flag and other flags are
+ used in Mach-O. */
+#undef MACHO_SYMBOL_FLAG_VARIABLE
+#define MACHO_SYMBOL_FLAG_VARIABLE ((SYMBOL_FLAG_MACH_DEP) << 3)