121 lines
3.9 KiB
C
121 lines
3.9 KiB
C
/* Target definitions for x86 running Darwin.
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Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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Contributed by Apple Computer Inc.
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This file is part of GNU CC.
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GNU CC 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 2, or (at your option)
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any later version.
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GNU CC 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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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#define TARGET_VERSION fprintf (stderr, " (i386 Darwin)");
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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builtin_define ("__i386__"); \
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builtin_define ("__LITTLE_ENDIAN__"); \
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builtin_define ("__MACH__"); \
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builtin_define ("__APPLE__"); \
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} \
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while (0)
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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 "%{!static:-fPIC}"
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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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/* Define the syntax of pseudo-ops, labels and comments. */
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/* String containing the assembler's comment-starter. */
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#define ASM_COMMENT_START "#"
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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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#define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS)
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/* TARGET_DEEP_BRANCH_PREDICTION is incompatible with Mach-O PIC. */
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#undef TARGET_DEEP_BRANCH_PREDICTION
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#define TARGET_DEEP_BRANCH_PREDICTION 0
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/* Define the syntax of pseudo-ops, labels and comments. */
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#define LPREFIX "L"
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/* Assembler pseudos to introduce constants of various size. */
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#define ASM_BYTE_OP "\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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/* Darwin as doesn't do ".quad". */
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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_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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} \
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} while (0)
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/* This says how to output an assembler line
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to define a global common symbol. */
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#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
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( fputs (".comm ", (FILE)), \
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assemble_name ((FILE), (NAME)), \
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fprintf ((FILE), ",%u\n", (ROUNDED)))
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/* This says how to output an assembler line
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to define a local common symbol. */
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#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
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( fputs (".lcomm ", (FILE)), \
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assemble_name ((FILE), (NAME)), \
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fprintf ((FILE), ",%u\n", (ROUNDED)))
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/* Darwin profiling -- call mcount. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(FILE, LABELNO) \
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do { \
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if (MACHOPIC_INDIRECT) \
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{ \
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const char *name = machopic_stub_name ("*mcount"); \
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fprintf (FILE, "\tcall %s\n", name+1); /* skip '&' */ \
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machopic_validate_stub_or_non_lazy_ptr (name, /*stub:*/1); \
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} \
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else fprintf (FILE, "\tcall mcount\n"); \
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} while (0)
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