1/* Definitions for AMD x86-64 using GNU userspace. 2 Copyright (C) 2001-2020 Free Software Foundation, Inc. 3 Contributed by Jan Hubicka <jh@suse.cz>, based on linux.h. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 3, or (at your option) 10any later version. 11 12GCC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17Under Section 7 of GPL version 3, you are granted additional 18permissions described in the GCC Runtime Library Exception, version 193.1, as published by the Free Software Foundation. 20 21You should have received a copy of the GNU General Public License and 22a copy of the GCC Runtime Library Exception along with this program; 23see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24<http://www.gnu.org/licenses/>. */ 25 26/* Provide a LINK_SPEC. Here we provide support for the special GCC 27 options -static and -shared, which allow us to link things in one 28 of these three modes by applying the appropriate combinations of 29 options at link-time. 30 31 When the -shared link option is used a final link is not being 32 done. */ 33 34#if TARGET_64BIT_DEFAULT 35#define SPEC_32 "m16|m32" 36#if TARGET_BI_ARCH == 2 37#define SPEC_64 "m64" 38#define SPEC_X32 "m16|m32|m64:;" 39#else 40#define SPEC_64 "m16|m32|mx32:;" 41#define SPEC_X32 "mx32" 42#endif 43#else 44#define SPEC_32 "m64|mx32:;" 45#define SPEC_64 "m64" 46#define SPEC_X32 "mx32" 47#endif 48 49#undef ASM_SPEC 50#define ASM_SPEC "%{" SPEC_32 ":--32} \ 51 %{" SPEC_64 ":--64} \ 52 %{" SPEC_X32 ":--x32} \ 53 %{msse2avx:%{!mavx:-msse2avx}}" 54 55#define GNU_USER_TARGET_LINK_SPEC \ 56 "%{" SPEC_64 ":-m " GNU_USER_LINK_EMULATION64 "} \ 57 %{" SPEC_32 ":-m " GNU_USER_LINK_EMULATION32 "} \ 58 %{" SPEC_X32 ":-m " GNU_USER_LINK_EMULATIONX32 "} \ 59 %{shared:-shared} \ 60 %{!shared: \ 61 %{!static: \ 62 %{!static-pie: \ 63 %{rdynamic:-export-dynamic} \ 64 %{" SPEC_32 ":-dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "} \ 65 %{" SPEC_64 ":-dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "} \ 66 %{" SPEC_X32 ":-dynamic-linker " GNU_USER_DYNAMIC_LINKERX32 "}}} \ 67 %{static:-static} %{static-pie:-static -pie --no-dynamic-linker -z text}}" 68 69#undef LINK_SPEC 70#define LINK_SPEC GNU_USER_TARGET_LINK_SPEC 71 72#if TARGET_64BIT_DEFAULT 73#if TARGET_BI_ARCH == 2 74#define MULTILIB_DEFAULTS { "mx32" } 75#else 76#define MULTILIB_DEFAULTS { "m64" } 77#endif 78#else 79#define MULTILIB_DEFAULTS { "m32" } 80#endif 81 82#ifdef TARGET_LIBC_PROVIDES_SSP 83/* i386 glibc provides __stack_chk_guard in %gs:0x14, 84 x32 glibc provides it in %fs:0x18. 85 x86_64 glibc provides it in %fs:0x28. */ 86#define TARGET_THREAD_SSP_OFFSET \ 87 (TARGET_64BIT ? (TARGET_X32 ? 0x18 : 0x28) : 0x14) 88 89/* i386 glibc provides __private_ss in %gs:0x30. 90 x32 glibc provides it in %fs:0x40. 91 x86_64 glibc provides it in %fs:0x70. */ 92#define TARGET_THREAD_SPLIT_STACK_OFFSET \ 93 (TARGET_64BIT ? (TARGET_X32 ? 0x40 : 0x70) : 0x30) 94#endif 95 96#undef WCHAR_TYPE 97#define WCHAR_TYPE (TARGET_LP64 ? "int" : "long int") 98