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14f73b5a | 1 | /* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format. |
748086b7 | 2 | Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009 |
3353afbe | 3 | Free Software Foundation, Inc. |
14f73b5a JH |
4 | Contributed by Jan Hubicka <jh@suse.cz>, based on linux.h. |
5 | ||
188fc5b5 | 6 | This file is part of GCC. |
14f73b5a | 7 | |
188fc5b5 | 8 | GCC is free software; you can redistribute it and/or modify |
14f73b5a | 9 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
14f73b5a JH |
11 | any later version. |
12 | ||
188fc5b5 | 13 | GCC is distributed in the hope that it will be useful, |
14f73b5a JH |
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 | ||
748086b7 JJ |
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 | |
2f83c7d6 | 25 | <http://www.gnu.org/licenses/>. */ |
14f73b5a | 26 | |
0f45f0f5 | 27 | #if TARGET_64BIT_DEFAULT |
14f73b5a | 28 | #define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)"); |
0f45f0f5 JM |
29 | #else |
30 | #define TARGET_VERSION fprintf (stderr, " (i386 Linux/ELF)"); | |
31 | #endif | |
14f73b5a | 32 | |
3d05b15f NB |
33 | #define TARGET_OS_CPP_BUILTINS() \ |
34 | do \ | |
35 | { \ | |
26b0ad13 | 36 | LINUX_TARGET_OS_CPP_BUILTINS(); \ |
3d05b15f NB |
37 | } \ |
38 | while (0) | |
14f73b5a JH |
39 | |
40 | #undef CPP_SPEC | |
3d05b15f | 41 | #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" |
14f73b5a | 42 | |
a0ba837e JH |
43 | /* The svr4 ABI for the i386 says that records and unions are returned |
44 | in memory. In the 64bit compilation we will turn this flag off in | |
45 | override_options, as we never do pcc_struct_return scheme on this target. */ | |
46 | #undef DEFAULT_PCC_STRUCT_RETURN | |
47 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
48 | ||
74dc3e94 RH |
49 | /* We arrange for the whole %fs segment to map the tls area. */ |
50 | #undef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT | |
51 | #define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT MASK_TLS_DIRECT_SEG_REFS | |
52 | ||
14f73b5a JH |
53 | /* Provide a LINK_SPEC. Here we provide support for the special GCC |
54 | options -static and -shared, which allow us to link things in one | |
55 | of these three modes by applying the appropriate combinations of | |
56 | options at link-time. | |
57 | ||
58 | When the -shared link option is used a final link is not being | |
59 | done. */ | |
60 | ||
7bd85ce0 JM |
61 | #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2" |
62 | #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2" | |
63 | ||
bd459cb6 L |
64 | #undef ASM_SPEC |
65 | #define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} \ | |
66 | %{Wa,*:%*} %{m32:--32} %{m64:--64} \ | |
67 | %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}" | |
68 | ||
0f45f0f5 JM |
69 | #if TARGET_64BIT_DEFAULT |
70 | #define SPEC_32 "m32" | |
71 | #define SPEC_64 "!m32" | |
72 | #else | |
73 | #define SPEC_32 "!m64" | |
74 | #define SPEC_64 "m64" | |
75 | #endif | |
76 | ||
14f73b5a | 77 | #undef LINK_SPEC |
0f45f0f5 | 78 | #define LINK_SPEC "%{" SPEC_64 ":-m elf_x86_64} %{" SPEC_32 ":-m elf_i386} \ |
9b420a6a | 79 | %{shared:-shared} \ |
14f73b5a JH |
80 | %{!shared: \ |
81 | %{!static: \ | |
82 | %{rdynamic:-export-dynamic} \ | |
0f45f0f5 JM |
83 | %{" SPEC_32 ":%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \ |
84 | %{" SPEC_64 ":%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}} \ | |
9b420a6a | 85 | %{static:-static}}" |
14f73b5a | 86 | |
d75e02d6 L |
87 | /* Similar to standard Linux, but adding -ffast-math support. */ |
88 | #undef ENDFILE_SPEC | |
89 | #define ENDFILE_SPEC \ | |
90 | "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \ | |
577565f9 UB |
91 | %{mpc32:crtprec32.o%s} \ |
92 | %{mpc64:crtprec64.o%s} \ | |
93 | %{mpc80:crtprec80.o%s} \ | |
d75e02d6 L |
94 | %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s" |
95 | ||
0f45f0f5 | 96 | #if TARGET_64BIT_DEFAULT |
96842bcd | 97 | #define MULTILIB_DEFAULTS { "m64" } |
0f45f0f5 JM |
98 | #else |
99 | #define MULTILIB_DEFAULTS { "m32" } | |
100 | #endif | |
96842bcd | 101 | |
3353afbe UB |
102 | /* Put all *tf routines in libgcc. */ |
103 | #undef LIBGCC2_HAS_TF_MODE | |
ff473280 | 104 | #define LIBGCC2_HAS_TF_MODE 1 |
3353afbe UB |
105 | #define LIBGCC2_TF_CEXT q |
106 | #define TF_SIZE 113 | |
107 | ||
a5fe455b ZW |
108 | #undef NEED_INDICATE_EXEC_STACK |
109 | #define NEED_INDICATE_EXEC_STACK 1 | |
3edc56a9 | 110 | |
8662eb14 | 111 | #define MD_UNWIND_SUPPORT "config/i386/linux-unwind.h" |
02a854f9 | 112 | |
51dd24d7 | 113 | /* This macro may be overridden in i386/k*bsd-gnu.h. */ |
02a854f9 | 114 | #define REG_NAME(reg) reg |
77008252 JJ |
115 | |
116 | #ifdef TARGET_LIBC_PROVIDES_SSP | |
117 | /* i386 glibc provides __stack_chk_guard in %gs:0x14, | |
118 | x86_64 glibc provides it in %fs:0x28. */ | |
119 | #define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? 0x28 : 0x14) | |
120 | #endif |