| /* Target definitions for x86 running Darwin. |
| Copyright (C) 2001, 2002 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 2, 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 COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* Enable Mach-O bits in generic x86 code. */ |
| #undef TARGET_MACHO |
| #define TARGET_MACHO 1 |
| |
| #define TARGET_VERSION fprintf (stderr, " (i386 Darwin)"); |
| |
| #define TARGET_OS_CPP_BUILTINS() \ |
| do \ |
| { \ |
| builtin_define ("__i386__"); \ |
| builtin_define ("__LITTLE_ENDIAN__"); \ |
| builtin_define ("__MACH__"); \ |
| builtin_define ("__APPLE__"); \ |
| } \ |
| while (0) |
| |
| /* We want -fPIC by default, unless we're using -static to compile for |
| the kernel or some such. */ |
| |
| #undef CC1_SPEC |
| #define CC1_SPEC "%{!static:-fPIC}" |
| |
| /* Use the following macro for any Darwin/x86-specific command-line option |
| translation. */ |
| #define SUBTARGET_OPTION_TRANSLATE_TABLE |
| |
| #define ASM_SPEC "-arch i386 \ |
| %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \ |
| %{!Zforce_cpusubtype_ALL:%{mmmx:-force_cpusubtype_ALL}\ |
| %{msse:-force_cpusubtype_ALL}\ |
| %{msse2:-force_cpusubtype_ALL}}" |
| |
| #undef SUBTARGET_EXTRA_SPECS |
| #define SUBTARGET_EXTRA_SPECS \ |
| { "darwin_arch", "i386" }, |
| |
| /* 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 |
| |
| /* 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. */ |
| |
| #define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS) |
| |
| /* TARGET_DEEP_BRANCH_PREDICTION is incompatible with Mach-O PIC. */ |
| |
| #undef TARGET_DEEP_BRANCH_PREDICTION |
| #define TARGET_DEEP_BRANCH_PREDICTION 0 |
| |
| /* 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) |
| |
| /* Define the syntax of pseudo-ops, labels and comments. */ |
| |
| #define LPREFIX "L" |
| |
| /* 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" |
| /* Darwin as doesn't do ".quad". */ |
| |
| #undef ASM_OUTPUT_ALIGN |
| #define ASM_OUTPUT_ALIGN(FILE,LOG) \ |
| do { if ((LOG) != 0) \ |
| { \ |
| if (in_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), ",%lu\n", (unsigned long)(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) \ |
| { \ |
| const char *name = machopic_stub_name ("*mcount"); \ |
| fprintf (FILE, "\tcall %s\n", name+1); /* skip '&' */ \ |
| machopic_validate_stub_or_non_lazy_ptr (name, /*stub:*/1); \ |
| } \ |
| else fprintf (FILE, "\tcall mcount\n"); \ |
| } while (0) |