2008-05-03 H.J. Lu <hongjiu.lu@intel.com>

[pf3gnuchains/gcc-fork.git] / gcc / config / i386 / linux64.h

diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
index 2578958..37ede61 100644 (file)
--- a/gcc/config/i386/linux64.h
+++ b/gcc/config/i386/linux64.h
@@ -1,12 +1,13 @@
 /* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format.
 /* Definitions for AMD x86-64 running Linux-based GNU systems with ELF format.

-   Copyright (C) 2001, 2002, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007
+   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
    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)
+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,
 any later version.
 
 GCC is distributed in the hope that it will be useful,


@@ -15,21 +16,19 @@ 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
 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, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA.  */
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */

 
 

+#if TARGET_64BIT_DEFAULT

 #define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)");
 #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();                         \
 
 #define TARGET_OS_CPP_BUILTINS()                               \
   do                                                           \
     {                                                          \
        LINUX_TARGET_OS_CPP_BUILTINS();                         \

-       if (flag_pic)                                           \
-         {                                                     \
-           builtin_define ("__PIC__");                         \
-           builtin_define ("__pic__");                         \
-         }                                                     \

     }                                                          \
   while (0)
 
     }                                                          \
   while (0)
 


@@ -54,17 +53,47 @@ Boston, MA 02110-1301, USA.  */
    When the -shared link option is used a final link is not being
    done.  */
 
    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"
+
+#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
 #undef LINK_SPEC

-#define LINK_SPEC "%{!m32:-m elf_x86_64} %{m32:-m elf_i386} \
+#define LINK_SPEC "%{" SPEC_64 ":-m elf_x86_64} %{" SPEC_32 ":-m elf_i386} \

   %{shared:-shared} \
   %{!shared: \
     %{!static: \
       %{rdynamic:-export-dynamic} \
   %{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}}} \
+      %{" SPEC_32 ":%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \
+      %{" SPEC_64 ":%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}} \

     %{static:-static}}"
 
     %{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" }
 #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 TARGET_64BIT
+#define LIBGCC2_TF_CEXT q
+#define TF_SIZE 113

 
 #undef NEED_INDICATE_EXEC_STACK
 #define NEED_INDICATE_EXEC_STACK 1
 
 #undef NEED_INDICATE_EXEC_STACK
 #define NEED_INDICATE_EXEC_STACK 1


@@ -73,3 +102,9 @@ Boston, MA 02110-1301, USA.  */
 
 /* This macro may be overridden in i386/k*bsd-gnu.h.  */
 #define REG_NAME(reg) reg
 
 /* 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