/* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format. Copyright (C) 2001, 2002, 2004 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 2, 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. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)"); #define TARGET_OS_CPP_BUILTINS() \ do \ { \ LINUX_TARGET_OS_CPP_BUILTINS(); \ if (flag_pic) \ { \ builtin_define ("__PIC__"); \ builtin_define ("__pic__"); \ } \ } \ 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. */ #undef LINK_SPEC #define LINK_SPEC "%{!m32:-m elf_x86_64} %{m32:-m elf_i386} \ %{shared:-shared} \ %{!shared: \ %{!static: \ %{rdynamic:-export-dynamic} \ %{m32:%{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \ %{!m32:%{!dynamic-linker:-dynamic-linker /lib64/ld-linux-x86-64.so.2}}} \ %{static:-static}}" #define MULTILIB_DEFAULTS { "m64" } #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