Mercurial > hg > CbC > CbC_gcc
diff gcc/config/i386/linux64.h @ 0:a06113de4d67
first commit
author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
parents | |
children | 77e2b8dfacca |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/config/i386/linux64.h Fri Jul 17 14:47:48 2009 +0900 @@ -0,0 +1,120 @@ +/* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format. + Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009 + 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/>. */ + +#if TARGET_64BIT_DEFAULT +#define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)"); +#else +#define TARGET_VERSION fprintf (stderr, " (i386 Linux/ELF)"); +#endif + +#define TARGET_OS_CPP_BUILTINS() \ + do \ + { \ + LINUX_TARGET_OS_CPP_BUILTINS(); \ + } \ + while (0) + +#undef CPP_SPEC +#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" + +/* 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 + override_options, 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. */ + +#define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2" +#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2" + +#undef ASM_SPEC +#define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} \ + %{Wa,*:%*} %{m32:--32} %{m64:--64} \ + %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}" + +#if TARGET_64BIT_DEFAULT +#define SPEC_32 "m32" +#define SPEC_64 "!m32" +#else +#define SPEC_32 "!m64" +#define SPEC_64 "m64" +#endif + +#undef LINK_SPEC +#define LINK_SPEC "%{" SPEC_64 ":-m elf_x86_64} %{" SPEC_32 ":-m elf_i386} \ + %{shared:-shared} \ + %{!shared: \ + %{!static: \ + %{rdynamic:-export-dynamic} \ + %{" SPEC_32 ":%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \ + %{" SPEC_64 ":%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}} \ + %{static:-static}}" + +/* Similar to standard Linux, but adding -ffast-math support. */ +#undef ENDFILE_SPEC +#define ENDFILE_SPEC \ + "%{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 + +#undef NEED_INDICATE_EXEC_STACK +#define NEED_INDICATE_EXEC_STACK 1 + +#define MD_UNWIND_SUPPORT "config/i386/linux-unwind.h" + +/* This macro may be overridden in i386/k*bsd-gnu.h. */ +#define REG_NAME(reg) reg + +#ifdef TARGET_LIBC_PROVIDES_SSP +/* i386 glibc provides __stack_chk_guard in %gs:0x14, + x86_64 glibc provides it in %fs:0x28. */ +#define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? 0x28 : 0x14) +#endif