gcc/config/alpha/freebsd.h

   1 /* Definitions for DEC Alpha/AXP running FreeBSD using the ELF format
   2    Copyright (C) 2000, 2002, 2004, 2005 Free Software Foundation, Inc.
   3    Contributed by David E. O'Brien <obrien@FreeBSD.org> and BSDi.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22
  23 #undef  SUBTARGET_EXTRA_SPECS
  24 #define SUBTARGET_EXTRA_SPECS \
  25   { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }
  26
  27 /* Provide a FBSD_TARGET_CPU_CPP_BUILTINS and CPP_SPEC appropriate for
  28    FreeBSD/alpha.  Besides the dealing with
  29    the GCC option `-posix', and PIC issues as on all FreeBSD platforms, we must
  30    deal with the Alpha's FP issues.  */
  31
  32 #undef  FBSD_TARGET_CPU_CPP_BUILTINS
  33 #define FBSD_TARGET_CPU_CPP_BUILTINS()          \
  34   do                                            \
  35     {                                           \
  36       if (flag_pic)                             \
  37         {                                       \
  38           builtin_define ("__PIC__");           \
  39           builtin_define ("__pic__");           \
  40         }                                       \
  41     }                                           \
  42   while (0)
  43
  44 #undef  CPP_SPEC
  45 #define CPP_SPEC "%(cpp_subtarget) %{posix:-D_POSIX_SOURCE}"
  46
  47 #define LINK_SPEC "%{G*} %{relax:-relax}                                \
  48   %{p:%nconsider using `-pg' instead of `-p' with gprof(1)}             \
  49   %{Wl,*:%*}                                                            \
  50   %{assert*} %{R*} %{rpath*} %{defsym*}                                 \
  51   %{shared:-Bshareable %{h*} %{soname*}}                                \
  52   %{!shared:                                                            \
  53     %{!static:                                                          \
  54       %{rdynamic:-export-dynamic}                                       \
  55       %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }}       \
  56     %{static:-Bstatic}}                                                 \
  57   %{symbolic:-Bsymbolic}"
  58
  59
  60 /************************[  Target stuff  ]***********************************/
  61
  62 /* Define the actual types of some ANSI-mandated types.
  63    Needs to agree with <machine/ansi.h>.  GCC defaults come from c-decl.c,
  64    c-common.c, and config/<arch>/<arch>.h.  */
  65
  66 /* alpha.h gets this wrong for FreeBSD.  We use the GCC defaults instead.  */
  67 #undef WCHAR_TYPE
  68
  69 #undef  WCHAR_TYPE_SIZE
  70 #define WCHAR_TYPE_SIZE 32
  71
  72 #undef  TARGET_VERSION
  73 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/alpha ELF)");
  74
  75 #define TARGET_ELF      1
  76
  77 #undef  TARGET_DEFAULT
  78 #define TARGET_DEFAULT  (MASK_FPREGS | MASK_GAS)
  79
  80 #undef HAS_INIT_SECTION
  81
  82 /* Show that we need a GP when profiling.  */
  83 #undef  TARGET_PROFILING_NEEDS_GP
  84 #define TARGET_PROFILING_NEEDS_GP 1
  85
  86 /* This is the char to use for continuation (in case we need to turn
  87    continuation back on).  */
  88
  89 #undef  DBX_CONTIN_CHAR
  90 #define DBX_CONTIN_CHAR '?'
  91
  92 /* Don't default to pcc-struct-return, we want to retain compatibility with
  93    older FreeBSD releases AND pcc-struct-return may not be reentrant.  */
  94
  95 #undef  DEFAULT_PCC_STRUCT_RETURN
  96 #define DEFAULT_PCC_STRUCT_RETURN 0