Merge branch 'vendor/GCC50' - gcc 5.0 snapshot 1 FEB 2015
[dragonfly.git] / contrib / gcc-5.0 / gcc / config / i386 / x86-64.h
1 /* OS independent definitions for AMD x86-64.
2    Copyright (C) 2001-2015 Free Software Foundation, Inc.
3    Contributed by Bo Thorsen <bo@suse.de>.
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 GNU General Public License for more details.
16
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
20
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
24 <http://www.gnu.org/licenses/>.  */
25
26 #undef ASM_COMMENT_START
27 #define ASM_COMMENT_START "#"
28
29 #undef DBX_REGISTER_NUMBER
30 #define DBX_REGISTER_NUMBER(n) \
31   (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
32
33 /* Output assembler code to FILE to call the profiler.  */
34 #define NO_PROFILE_COUNTERS 1
35
36 #undef MCOUNT_NAME
37 #define MCOUNT_NAME "mcount"
38
39 #undef SIZE_TYPE
40 #define SIZE_TYPE (TARGET_LP64 ? "long unsigned int" : "unsigned int")
41
42 #undef PTRDIFF_TYPE
43 #define PTRDIFF_TYPE (TARGET_LP64 ? "long int" : "int")
44
45 #undef WCHAR_TYPE
46 #define WCHAR_TYPE "int"
47
48 #undef WCHAR_TYPE_SIZE
49 #define WCHAR_TYPE_SIZE 32
50
51 #undef ASM_SPEC
52 #define ASM_SPEC "%{m32:--32} %{m64:--64} %{mx32:--x32}"
53
54 #undef ASM_OUTPUT_ALIGNED_BSS
55 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
56   x86_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
57
58 #undef  ASM_OUTPUT_ALIGNED_COMMON
59 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \
60   x86_elf_aligned_common (FILE, NAME, SIZE, ALIGN);
61
62 /* This is used to align code labels according to Intel recommendations.  */
63
64 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
65 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP)                    \
66   do {                                                                  \
67     if ((LOG) != 0) {                                                   \
68       if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG));  \
69       else {                                                            \
70         fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));     \
71         /* Make sure that we have at least 8 byte alignment if > 8 byte \
72            alignment is preferred.  */                                  \
73         if ((LOG) > 3                                                   \
74             && (1 << (LOG)) > ((MAX_SKIP) + 1)                          \
75             && (MAX_SKIP) >= 7)                                         \
76           fputs ("\t.p2align 3\n", (FILE));                             \
77       }                                                                 \
78     }                                                                   \
79   } while (0)
80 #undef  ASM_OUTPUT_MAX_SKIP_PAD
81 #define ASM_OUTPUT_MAX_SKIP_PAD(FILE, LOG, MAX_SKIP)                    \
82   if ((LOG) != 0)                                                       \
83     {                                                                   \
84       if ((MAX_SKIP) == 0)                                              \
85         fprintf ((FILE), "\t.p2align %d\n", (LOG));                     \
86       else                                                              \
87         fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));     \
88     }
89 #endif
90
91
92 /* i386 System V Release 4 uses DWARF debugging info.
93    x86-64 ABI specifies DWARF2.  */
94
95 #define DWARF2_DEBUGGING_INFO 1
96 #define DWARF2_UNWIND_INFO 1
97
98 #undef PREFERRED_DEBUGGING_TYPE
99 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
100
101 #undef TARGET_ASM_SELECT_SECTION
102 #define TARGET_ASM_SELECT_SECTION  x86_64_elf_select_section
103
104 #undef TARGET_ASM_UNIQUE_SECTION
105 #define TARGET_ASM_UNIQUE_SECTION  x86_64_elf_unique_section
106
107 #undef TARGET_SECTION_TYPE_FLAGS
108 #define TARGET_SECTION_TYPE_FLAGS  x86_64_elf_section_type_flags