gcc/config/cris/linux.h

   1 /* Definitions for GCC.  Part of the machine description for CRIS.
   2    Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011
   3    Free Software Foundation, Inc.
   4    Contributed by Axis Communications.  Written by Hans-Peter Nilsson.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22
  23 /* After the first "Node:" comment comes all preprocessor directives and
  24    attached declarations described in the info files, the "Using and
  25    Porting GCC" manual (uapgcc), in the same order as found in the "Target
  26    macros" section in the gcc-2.9x CVS edition of 2000-03-17.  FIXME: Not
  27    really, but needs an update anyway.
  28
  29    There is no generic copy-of-uapgcc comment, you'll have to see uapgcc
  30    for that.  If applicable, there is a CRIS-specific comment.  The order
  31    of macro definitions follow the order in the manual.  Every section in
  32    the manual (node in the info pages) has an introductory `Node:
  33    <subchapter>' comment.  If no macros are defined for a section, only
  34    the section-comment is present.  */
  35
  36 /* This file defines the macros for cris-axis-linux-gnu that are not
  37    covered by cris.h, elfos.h and (config/)linux.h.  */
  38
  39 /* Make sure we have a valid TARGET_CPU_DEFAULT, so we can assume it
  40    and take shortcuts below.  */
  41 #ifndef TARGET_CPU_DEFAULT
  42 #error "TARGET_CPU_DEFAULT not defined"
  43 #elif (TARGET_CPU_DEFAULT+0) != 10 && (TARGET_CPU_DEFAULT+0) != 32
  44 #error "TARGET_CPU_DEFAULT must be 10 or 32, or this file be updated"
  45 #endif
  46
  47 /* Node: Instruction Output */
  48
  49 #undef USER_LABEL_PREFIX
  50 #define USER_LABEL_PREFIX ""
  51
  52 /* Node: Driver */
  53 /* These macros are CRIS-specific, but used in target driver macros.  */
  54
  55 #undef CRIS_CPP_SUBTARGET_SPEC
  56 #if TARGET_CPU_DEFAULT == 32
  57 # define CRIS_CPP_SUBTARGET_SPEC \
  58   "%{pthread:-D_REENTRANT}\
  59    %{!march=*:%{!mcpu=*:-D__arch_v32 -D__CRIS_arch_version=32}}"
  60 #else
  61 # define CRIS_CPP_SUBTARGET_SPEC \
  62   "%{pthread:-D_REENTRANT}\
  63    %{!march=*:%{!mcpu=*:-D__arch_v10 -D__CRIS_arch_version=10}}"
  64 #endif
  65
  66 #undef CRIS_CC1_SUBTARGET_SPEC
  67 #if TARGET_CPU_DEFAULT == 32
  68 # define CRIS_CC1_SUBTARGET_SPEC \
  69  "%{!march=*:%{!mcpu=*:-march=v32}}"
  70 #define CRIS_SUBTARGET_DEFAULT_ARCH MASK_AVOID_GOTPLT
  71 #else
  72 # define CRIS_CC1_SUBTARGET_SPEC \
  73  "%{!march=*:%{!mcpu=*:-march=v10}}"
  74 #define CRIS_SUBTARGET_DEFAULT_ARCH 0
  75 #endif
  76
  77 #undef CRIS_ASM_SUBTARGET_SPEC
  78 #if TARGET_CPU_DEFAULT == 32
  79 # define CRIS_ASM_SUBTARGET_SPEC \
  80  "--em=criself \
  81   %{!march=*:%{!mcpu=*:--march=v32}} \
  82   %{!fleading-underscore:--no-underscore}\
  83   %{fPIC|fpic|fPIE|fpie: --pic}"
  84 #else
  85 # define CRIS_ASM_SUBTARGET_SPEC \
  86  "--em=criself \
  87   %{!march=*:%{!mcpu=*:--march=v10}} \
  88   %{!fleading-underscore:--no-underscore}\
  89   %{fPIC|fpic|fPIE|fpie: --pic}"
  90 #endif
  91
  92 /* Previously controlled by target_flags.  */
  93 #undef TARGET_LINUX
  94 #define TARGET_LINUX 1
  95
  96 #undef CRIS_SUBTARGET_DEFAULT
  97 #define CRIS_SUBTARGET_DEFAULT                  \
  98   (MASK_SVINTO                                  \
  99    + MASK_ETRAX4_ADD                            \
 100    + MASK_ALIGN_BY_32                           \
 101    + CRIS_SUBTARGET_DEFAULT_ARCH)
 102
 103 #undef CRIS_DEFAULT_CPU_VERSION
 104 #define CRIS_DEFAULT_CPU_VERSION CRIS_CPU_NG
 105
 106 #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
 107
 108 #undef CRIS_LINK_SUBTARGET_SPEC
 109 #define CRIS_LINK_SUBTARGET_SPEC \
 110  "-mcrislinux\
 111   %{shared} %{static}\
 112   %{symbolic:-Bdynamic} %{static:-Bstatic}\
 113   %{!shared:%{!static:\
 114               %{rdynamic:-export-dynamic}\
 115               -dynamic-linker " GNU_USER_DYNAMIC_LINKER "}}\
 116   %{!r:%{O2|O3: --gc-sections}}"
 117
 118
 119 /* Node: Run-time Target */
 120
 121 /* For the cris-*-linux* subtarget.  */
 122 #undef TARGET_OS_CPP_BUILTINS
 123 #define TARGET_OS_CPP_BUILTINS()                \
 124   do                                            \
 125     {                                           \
 126       GNU_USER_TARGET_OS_CPP_BUILTINS();        \
 127       if (flag_leading_underscore <= 0)         \
 128         builtin_define ("__NO_UNDERSCORES__");  \
 129     }                                           \
 130   while (0)
 131
 132 /* Node: Type Layout */
 133
 134 #undef SIZE_TYPE
 135 #define SIZE_TYPE "unsigned int"
 136
 137 #undef PTRDIFF_TYPE
 138 #define PTRDIFF_TYPE "int"
 139
 140 /* Node: Sections */
 141
 142 /* GNU/Linux has crti and crtn and does not need the
 143    CRT_CALL_STATIC_FUNCTION trick in cris.h.  */
 144 #undef CRT_CALL_STATIC_FUNCTION
 145
 146 /*
 147  * Local variables:
 148  * eval: (c-set-style "gnu")
 149  * indent-tabs-mode: t
 150  * End:
 151  */