--- /dev/null
+/* Definitions for AMD x86-64 using GNU userspace.
+ Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+ Free Software Foundation, Inc.
+ Contributed by Jan Hubicka <jh@suse.cz>, based on linux.h.
+
+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 3, 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ GNU_USER_TARGET_OS_CPP_BUILTINS(); \
+ } \
+ while (0)
+
+#undef CPP_SPEC
+#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
+
+#undef CC1_SPEC
+#define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
+
+/* The svr4 ABI for the i386 says that records and unions are returned
+ in memory. In the 64bit compilation we will turn this flag off in
+ ix86_option_override_internal, as we never do pcc_struct_return
+ scheme on this target. */
+#undef DEFAULT_PCC_STRUCT_RETURN
+#define DEFAULT_PCC_STRUCT_RETURN 1
+
+/* We arrange for the whole %fs segment to map the tls area. */
+#undef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT
+#define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT MASK_TLS_DIRECT_SEG_REFS
+
+/* Provide a LINK_SPEC. Here we provide support for the special GCC
+ options -static and -shared, which allow us to link things in one
+ of these three modes by applying the appropriate combinations of
+ options at link-time.
+
+ When the -shared link option is used a final link is not being
+ done. */
+
+#if TARGET_64BIT_DEFAULT
+#define SPEC_32 "m32"
+#define SPEC_64 "m32|mx32:;"
+#define SPEC_X32 "mx32"
+#else
+#define SPEC_32 "m64|mx32:;"
+#define SPEC_64 "m64"
+#define SPEC_X32 "mx32"
+#endif
+
+#undef ASM_SPEC
+#define ASM_SPEC "%{" SPEC_32 ":--32} \
+ %{" SPEC_64 ":--64} \
+ %{" SPEC_X32 ":--x32} \
+ %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}"
+
+#undef LINK_SPEC
+#define LINK_SPEC "%{" SPEC_64 ":-m " GNU_USER_LINK_EMULATION64 "} \
+ %{" SPEC_32 ":-m " GNU_USER_LINK_EMULATION32 "} \
+ %{" SPEC_X32 ":-m " GNU_USER_LINK_EMULATIONX32 "} \
+ %{shared:-shared} \
+ %{!shared: \
+ %{!static: \
+ %{rdynamic:-export-dynamic} \
+ %{" SPEC_32 ":-dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "} \
+ %{" SPEC_64 ":-dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "} \
+ %{" SPEC_X32 ":-dynamic-linker " GNU_USER_DYNAMIC_LINKERX32 "}} \
+ %{static:-static}}"
+
+/* Similar to standard GNU userspace, but adding -ffast-math support. */
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC \
+ "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
+ %{mpc32:crtprec32.o%s} \
+ %{mpc64:crtprec64.o%s} \
+ %{mpc80:crtprec80.o%s} \
+ %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
+
+#if TARGET_64BIT_DEFAULT
+#define MULTILIB_DEFAULTS { "m64" }
+#else
+#define MULTILIB_DEFAULTS { "m32" }
+#endif
+
+/* Put all *tf routines in libgcc. */
+#undef LIBGCC2_HAS_TF_MODE
+#define LIBGCC2_HAS_TF_MODE 1
+#define LIBGCC2_TF_CEXT q
+#define TF_SIZE 113
+
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
+/* The stack pointer needs to be moved while checking the stack. */
+#define STACK_CHECK_MOVING_SP 1
+
+/* Static stack checking is supported by means of probes. */
+#define STACK_CHECK_STATIC_BUILTIN 1
+
+#ifdef TARGET_LIBC_PROVIDES_SSP
+/* i386 glibc provides __stack_chk_guard in %gs:0x14,
+ x32 glibc provides it in %fs:0x18.
+ x86_64 glibc provides it in %fs:0x28. */
+#define TARGET_THREAD_SSP_OFFSET \
+ (TARGET_64BIT ? (TARGET_X32 ? 0x18 : 0x28) : 0x14)
+
+/* We only build the -fsplit-stack support in libgcc if the
+ assembler has full support for the CFI directives. */
+#if HAVE_GAS_CFI_PERSONALITY_DIRECTIVE
+#define TARGET_CAN_SPLIT_STACK
+#endif
+/* We steal the last transactional memory word. */
+#define TARGET_THREAD_SPLIT_STACK_OFFSET \
+ (TARGET_64BIT ? (TARGET_X32 ? 0x40 : 0x70) : 0x30)
+#endif
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