1 /* OS independent definitions for AMD x86-64. 2 Copyright (C) 2001, 2005, 2007, 2009, 2010, 2011 3 Free Software Foundation, Inc. 4 Contributed by Bo Thorsen <bo@suse.de>. 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 Under Section 7 of GPL version 3, you are granted additional 19 permissions described in the GCC Runtime Library Exception, version 20 3.1, as published by the Free Software Foundation. 21 22 You should have received a copy of the GNU General Public License and 23 a copy of the GCC Runtime Library Exception along with this program; 24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 25 <http://www.gnu.org/licenses/>. */ 26 27 #undef ASM_COMMENT_START 28 #define ASM_COMMENT_START "#" 29 30 #undef DBX_REGISTER_NUMBER 31 #define DBX_REGISTER_NUMBER(n) \ 32 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n]) 33 34 /* Output assembler code to FILE to call the profiler. */ 35 #define NO_PROFILE_COUNTERS 1 36 37 #undef MCOUNT_NAME 38 #define MCOUNT_NAME "mcount" 39 40 #undef SIZE_TYPE 41 #define SIZE_TYPE (TARGET_LP64 ? "long unsigned int" : "unsigned int") 42 43 #undef PTRDIFF_TYPE 44 #define PTRDIFF_TYPE (TARGET_LP64 ? "long int" : "int") 45 46 #undef WCHAR_TYPE 47 #define WCHAR_TYPE "int" 48 49 #undef WCHAR_TYPE_SIZE 50 #define WCHAR_TYPE_SIZE 32 51 52 #undef ASM_SPEC 53 #define ASM_SPEC "%{m32:--32} %{m64:--64}" 54 55 #undef ASM_OUTPUT_ALIGNED_BSS 56 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 57 x86_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 58 59 #undef ASM_OUTPUT_ALIGNED_COMMON 60 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \ 61 x86_elf_aligned_common (FILE, NAME, SIZE, ALIGN); 62 63 /* This is used to align code labels according to Intel recommendations. */ 64 65 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 66 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \ 67 do { \ 68 if ((LOG) != 0) { \ 69 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 70 else { \ 71 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 72 /* Make sure that we have at least 8 byte alignment if > 8 byte \ 73 alignment is preferred. */ \ 74 if ((LOG) > 3 \ 75 && (1 << (LOG)) > ((MAX_SKIP) + 1) \ 76 && (MAX_SKIP) >= 7) \ 77 fputs ("\t.p2align 3\n", (FILE)); \ 78 } \ 79 } \ 80 } while (0) 81 #undef ASM_OUTPUT_MAX_SKIP_PAD 82 #define ASM_OUTPUT_MAX_SKIP_PAD(FILE, LOG, MAX_SKIP) \ 83 if ((LOG) != 0) \ 84 { \ 85 if ((MAX_SKIP) == 0) \ 86 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 87 else \ 88 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 89 } 90 #endif 91 92 93 /* i386 System V Release 4 uses DWARF debugging info. 94 x86-64 ABI specifies DWARF2. */ 95 96 #define DWARF2_DEBUGGING_INFO 1 97 #define DWARF2_UNWIND_INFO 1 98 99 #undef PREFERRED_DEBUGGING_TYPE 100 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 101 102 #undef TARGET_ASM_SELECT_SECTION 103 #define TARGET_ASM_SELECT_SECTION x86_64_elf_select_section 104 105 #undef TARGET_ASM_UNIQUE_SECTION 106 #define TARGET_ASM_UNIQUE_SECTION x86_64_elf_unique_section 107