123 lines
4.1 KiB
C
123 lines
4.1 KiB
C
/* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format.
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Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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Contributed by Jan Hubicka <jh@suse.cz>, based on linux.h.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#if TARGET_64BIT_DEFAULT
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#define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)");
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#else
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#define TARGET_VERSION fprintf (stderr, " (i386 Linux/ELF)");
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#endif
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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LINUX_TARGET_OS_CPP_BUILTINS(); \
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} \
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while (0)
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#undef CPP_SPEC
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#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
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/* The svr4 ABI for the i386 says that records and unions are returned
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in memory. In the 64bit compilation we will turn this flag off in
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override_options, as we never do pcc_struct_return scheme on this target. */
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#undef DEFAULT_PCC_STRUCT_RETURN
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#define DEFAULT_PCC_STRUCT_RETURN 1
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/* We arrange for the whole %fs segment to map the tls area. */
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#undef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT
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#define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT MASK_TLS_DIRECT_SEG_REFS
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/* Provide a LINK_SPEC. Here we provide support for the special GCC
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options -static and -shared, which allow us to link things in one
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of these three modes by applying the appropriate combinations of
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options at link-time.
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When the -shared link option is used a final link is not being
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done. */
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#define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
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#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
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#if TARGET_64BIT_DEFAULT
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#define SPEC_32 "m32"
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#define SPEC_64 "!m32"
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#else
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#define SPEC_32 "!m64"
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#define SPEC_64 "m64"
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#endif
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#undef ASM_SPEC
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#define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} \
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%{Wa,*:%*} %{" SPEC_32 ":--32} %{" SPEC_64 ":--64} \
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%{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}"
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#undef LINK_SPEC
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#define LINK_SPEC "%{" SPEC_64 ":-m elf_x86_64} %{" SPEC_32 ":-m elf_i386} \
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%{shared:-shared} \
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%{!shared: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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%{" SPEC_32 ":%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \
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%{" SPEC_64 ":%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}} \
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%{static:-static}}"
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/* Similar to standard Linux, but adding -ffast-math support. */
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC \
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"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
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%{mpc32:crtprec32.o%s} \
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%{mpc64:crtprec64.o%s} \
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%{mpc80:crtprec80.o%s} \
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%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
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#if TARGET_64BIT_DEFAULT
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#define MULTILIB_DEFAULTS { "m64" }
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#else
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#define MULTILIB_DEFAULTS { "m32" }
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#endif
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/* Put all *tf routines in libgcc. */
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#undef LIBGCC2_HAS_TF_MODE
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#define LIBGCC2_HAS_TF_MODE 1
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#define LIBGCC2_TF_CEXT q
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#define TF_SIZE 113
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#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
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#define MD_UNWIND_SUPPORT "config/i386/linux-unwind.h"
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/* The stack pointer needs to be moved while checking the stack. */
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#define STACK_CHECK_MOVING_SP 1
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/* This macro may be overridden in i386/k*bsd-gnu.h. */
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#define REG_NAME(reg) reg
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#ifdef TARGET_LIBC_PROVIDES_SSP
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/* i386 glibc provides __stack_chk_guard in %gs:0x14,
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x86_64 glibc provides it in %fs:0x28. */
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#define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? 0x28 : 0x14)
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#endif
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