gcc/config/mips/iris6.h

   1 /* Definitions of target machine for GNU compiler.  IRIX version 6.
   2    Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004,
   3    2005
   4    Free Software Foundation, Inc.
   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 2, 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 COPYING.  If not, write to
  20 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, USA.  */
  22
  23 /* Allow some special handling for IRIX 6.  */
  24 #undef TARGET_IRIX6
  25 #define TARGET_IRIX6 1
  26
  27 /* Default to -mabi=n32 and -mips3.  */
  28 #undef MULTILIB_DEFAULTS
  29 #define MULTILIB_DEFAULTS { "mabi=n32" }
  30
  31 /* Force the default ABI onto the command line in order to make the specs
  32    easier to write.  Default to the mips2 ISA for the O32 ABI.  */
  33 #define DRIVER_SELF_SPECS \
  34   "%{!mabi=*: -mabi=n32}", \
  35   "%{mabi=32: %{!mips*: %{!march*: -mips2}}}"
  36
  37 /* Force the generation of dwarf .debug_frame sections even if not
  38    compiling -g.  This guarantees that we can unwind the stack.  */
  39 #define DWARF2_FRAME_INFO 1
  40
  41 /* The system unwinder in libexc requires a specific dwarf return address
  42    column to work.  */
  43 #undef  DWARF_FRAME_RETURN_COLUMN
  44 #define DWARF_FRAME_RETURN_COLUMN (FP_REG_LAST + 1)
  45
  46 #undef MACHINE_TYPE
  47 #define MACHINE_TYPE "SGI running IRIX 6.x"
  48
  49 #ifdef IRIX_USING_GNU_LD
  50 #define IRIX_SUBTARGET_LINK_SPEC \
  51   "%{mabi=32: -melf32bsmip}%{mabi=n32: -melf32bmipn32}%{mabi=64: -melf64bmip}"
  52 #else
  53 #define IRIX_SUBTARGET_LINK_SPEC \
  54   "%{w} -_SYSTYPE_SVR4 -woff 131 \
  55    %{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"
  56 #endif
  57
  58 /* Profiling is supported via libprof1.a not -lc_p as in IRIX 3.  */
  59 #undef STARTFILE_SPEC
  60 #define STARTFILE_SPEC \
  61   "%{!shared: \
  62      %{mabi=32:%{pg:gcrt1.o%s} \
  63        %{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
  64      %{mabi=n32: \
  65        %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
  66          %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
  67            %{!p:/usr/lib32/mips4/crt1.o%s}}} \
  68        %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
  69          %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
  70            %{!p:/usr/lib32/mips3/crt1.o%s}}}} \
  71      %{mabi=64: \
  72        %{mips4:%{pg:/usr/lib64/mips4/gcrt1.o} \
  73          %{!pg:%{p:/usr/lib64/mips4/mcrt1.o /usr/lib64/mips4/libprof1.a} \
  74            %{!p:/usr/lib64/mips4/crt1.o}}} \
  75        %{!mips4:%{pg:/usr/lib64/mips3/gcrt1.o} \
  76          %{!pg:%{p:/usr/lib64/mips3/mcrt1.o /usr/lib64/mips3/libprof1.a} \
  77            %{!p:/usr/lib64/mips3/crt1.o}}}}} \
  78   irix-crti.o%s crtbegin.o%s"
  79
  80 #ifdef IRIX_USING_GNU_LD
  81 #define SUBTARGET_DONT_WARN_UNUSED_SPEC ""
  82 #define SUBTARGET_WARN_UNUSED_SPEC ""
  83 #else
  84 #define SUBTARGET_DONT_WARN_UNUSED_SPEC "-dont_warn_unused"
  85 #define SUBTARGET_WARN_UNUSED_SPEC "-warn_unused"
  86 #endif
  87
  88 #undef LIB_SPEC
  89 #define LIB_SPEC \
  90   "%{mabi=n32: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
  91      -L/usr/lib32} \
  92    %{mabi=64: %{mips4:-L/usr/lib64/mips4} %{!mips4:-L/usr/lib64/mips3} \
  93      -L/usr/lib64} \
  94    %{!shared:" \
  95      SUBTARGET_DONT_WARN_UNUSED_SPEC \
  96      " %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc " \
  97      SUBTARGET_WARN_UNUSED_SPEC "}"
  98
  99 /* Avoid getting two warnings for libgcc.a everytime we link.  */
 100 #undef LIBGCC_SPEC
 101 #define LIBGCC_SPEC \
 102   SUBTARGET_DONT_WARN_UNUSED_SPEC " -lgcc " SUBTARGET_WARN_UNUSED_SPEC
 103
 104 #undef ENDFILE_SPEC
 105 #define ENDFILE_SPEC \
 106   "crtend.o%s irix-crtn.o%s \
 107    %{!shared: \
 108      %{mabi=32:crtn.o%s}\
 109      %{mabi=n32:%{mips4:/usr/lib32/mips4/crtn.o%s}\
 110        %{!mips4:/usr/lib32/mips3/crtn.o%s}}\
 111      %{mabi=64:%{mips4:/usr/lib64/mips4/crtn.o%s}\
 112        %{!mips4:/usr/lib64/mips3/crtn.o%s}}}"
 113
 114 #define MIPS_TFMODE_FORMAT mips_extended_format