release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/lib/gcc/arm-brcm-linux-uclibcgnueabi/4.5.3/plugin/include/config/linux.h

   1 /* Definitions for Linux-based GNU systems with ELF format
   2    Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006,
   3    2007, 2009 Free Software Foundation, Inc.
   4    Contributed by Eric Youngdale.
   5    Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 3, or (at your option)
  12 any later version.
  13
  14 GCC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 Under Section 7 of GPL version 3, you are granted additional
  20 permissions described in the GCC Runtime Library Exception, version
  21 3.1, as published by the Free Software Foundation.
  22
  23 You should have received a copy of the GNU General Public License and
  24 a copy of the GCC Runtime Library Exception along with this program;
  25 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  26 <http://www.gnu.org/licenses/>.  */
  27
  28 /* Don't assume anything about the header files.  */
  29 #define NO_IMPLICIT_EXTERN_C
  30
  31 #undef ASM_APP_ON
  32 #define ASM_APP_ON "#APP\n"
  33
  34 #undef ASM_APP_OFF
  35 #define ASM_APP_OFF "#NO_APP\n"
  36
  37 #undef MD_EXEC_PREFIX
  38 #undef MD_STARTFILE_PREFIX
  39
  40 /* Provide a STARTFILE_SPEC appropriate for GNU/Linux.  Here we add
  41    the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
  42    provides part of the support for getting C++ file-scope static
  43    object constructed before entering `main'.  */
  44
  45 #undef  STARTFILE_SPEC
  46 #if defined HAVE_LD_PIE
  47 #define STARTFILE_SPEC \
  48   "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
  49    crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
  50 #else
  51 #define STARTFILE_SPEC \
  52   "%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \
  53    crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
  54 #endif
  55
  56 /* Provide a ENDFILE_SPEC appropriate for GNU/Linux.  Here we tack on
  57    the GNU/Linux magical crtend.o file (see crtstuff.c) which
  58    provides part of the support for getting C++ file-scope static
  59    object constructed before entering `main', followed by a normal
  60    GNU/Linux "finalizer" file, `crtn.o'.  */
  61
  62 #undef  ENDFILE_SPEC
  63 #define ENDFILE_SPEC \
  64   "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
  65
  66 /* This is for -profile to use -lc_p instead of -lc.  */
  67 #ifndef CC1_SPEC
  68 #define CC1_SPEC "%{profile:-p}"
  69 #endif
  70
  71 /* The GNU C++ standard library requires that these macros be defined.  */
  72 #undef CPLUSPLUS_CPP_SPEC
  73 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
  74
  75 #undef  LIB_SPEC
  76 #define LIB_SPEC \
  77   "%{pthread:-lpthread} \
  78    %{shared:-lc} \
  79    %{!shared:%{mieee-fp:-lieee} %{profile:-lc_p}%{!profile:-lc}}"
  80
  81 #define LINUX_TARGET_OS_CPP_BUILTINS()                          \
  82     do {                                                        \
  83         builtin_define ("__gnu_linux__");                       \
  84         builtin_define_std ("linux");                           \
  85         builtin_define_std ("unix");                            \
  86         builtin_assert ("system=linux");                        \
  87         builtin_assert ("system=unix");                         \
  88         builtin_assert ("system=posix");                        \
  89     } while (0)
  90
  91 #if defined(HAVE_LD_EH_FRAME_HDR)
  92 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
  93 #endif
  94
  95 /* Define this so we can compile MS code for use with WINE.  */
  96 #define HANDLE_PRAGMA_PACK_PUSH_POP
  97
  98 #undef LINK_GCC_C_SEQUENCE_SPEC
  99 #define LINK_GCC_C_SEQUENCE_SPEC \
 100   "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
 101
 102 /* Use --as-needed -lgcc_s for eh support.  */
 103 #ifdef HAVE_LD_AS_NEEDED
 104 #define USE_LD_AS_NEEDED 1
 105 #endif
 106
 107 /* Determine which dynamic linker to use depending on whether GLIBC or
 108    uClibc is the default C library and whether -muclibc or -mglibc has
 109    been passed to change the default.  */
 110 #if UCLIBC_DEFAULT
 111 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:%{muclibc:%e-mglibc and -muclibc used together}" G ";:" U "}"
 112 #else
 113 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:%{mglibc:%e-mglibc and -muclibc used together}" U ";:" G "}"
 114 #endif
 115
 116 /* For most targets the following definitions suffice;
 117    GLIBC_DYNAMIC_LINKER must be defined for each target using them, or
 118    GLIBC_DYNAMIC_LINKER32 and GLIBC_DYNAMIC_LINKER64 for targets
 119    supporting both 32-bit and 64-bit compilation.  */
 120 #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
 121 #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
 122 #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
 123 #define LINUX_DYNAMIC_LINKER \
 124   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
 125 #define LINUX_DYNAMIC_LINKER32 \
 126   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
 127 #define LINUX_DYNAMIC_LINKER64 \
 128   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
 129
 130 /* Determine whether the entire c99 runtime
 131    is present in the runtime library.  */
 132 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
 133
 134 /* Whether we have sincos that follows the GNU extension.  */
 135 #define TARGET_HAS_SINCOS (OPTION_GLIBC)
 136
 137 #define TARGET_POSIX_IO