gcc/config/mips/linux64.h

   1 /* Definitions for MIPS running Linux-based GNU systems with ELF format
   2    using n32/64 abi.
   3    Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
   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, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 /* This sets the post-install default ABI to n32.  This must NOT be
  23    kept in sync with the default ABI in gcc/config.gcc; it's actually
  24    meant to override that.  However, for correct behavior at build
  25    time, we also need t-linux64 to get the build-time specs in line
  26    with the setting in config.gcc.  */
  27 #define DRIVER_DEFAULT_ABI_SELF_SPEC "%{!mabi=*:-mabi=n32}"
  28 #undef SUBTARGET_EXTRA_SPECS
  29 #define SUBTARGET_EXTRA_SPECS \
  30   { "driver_default_abi_self_spec", DRIVER_DEFAULT_ABI_SELF_SPEC },
  31 #define DRIVER_SELF_SPECS \
  32 "%{!EB:%{!EL:%(endian_spec)}}", \
  33 "%{mabi-fake-default:%{!mabi=*:-mabi=32}}", \
  34 "%(driver_default_abi_self_spec)", \
  35 "%{!mips*:%{!march=*:%{mabi=32:-mips1}%{mabi=n32|mabi=64:-mips3}}}"
  36
  37 #undef SUBTARGET_TARGET_SWITCHES
  38 #define SUBTARGET_TARGET_SWITCHES \
  39   { "abi-fake-default", 0, N_("Same as -mabi=32, just trickier") },
  40
  41 #undef SUBTARGET_ASM_SPEC
  42 #define SUBTARGET_ASM_SPEC "\
  43 %{!fno-PIC:%{!fno-pic:-KPIC}} \
  44 %{fno-PIC:-non_shared} %{fno-pic:-non_shared} \
  45 %{mabi=64:-64} %{mabi=n32:-n32}"
  46
  47 #undef LIB_SPEC
  48 #define LIB_SPEC "\
  49 %{shared: -lc} \
  50 %{!static: \
  51  %{mabi=n32:-rpath-link %R/lib32:%R/usr/lib32} \
  52  %{mabi=64:-rpath-link %R/lib64:%R/usr/lib64} \
  53  %{mabi=32:-rpath-link %R/lib:%R/usr/lib}} \
  54 %{!shared: %{pthread:-lpthread} \
  55   %{profile:-lc_p} %{!profile: -lc}}"
  56
  57 #undef LINK_SPEC
  58 #define LINK_SPEC "\
  59 %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \
  60 %{bestGnum} %{shared} %{non_shared} \
  61 %{call_shared} %{no_archive} %{exact_version} \
  62  %(endian_spec) \
  63   %{!shared: \
  64     %{!ibcs: \
  65       %{!static: \
  66         %{rdynamic:-export-dynamic} \
  67         %{!dynamic-linker: \
  68           %{mabi=n32: -dynamic-linker /lib32/ld.so.1} \
  69           %{mabi=64: -dynamic-linker /lib64/ld.so.1} \
  70           %{mabi=32: -dynamic-linker /lib/ld.so.1}}} \
  71       %{static:-static}}} \
  72 %{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32} \
  73 %{mabi=64:-melf64%{EB:b}%{EL:l}tsmip} \
  74 %{mabi=32:-melf32%{EB:b}%{EL:l}tsmip}"
  75
  76 #undef LOCAL_LABEL_PREFIX
  77 #define LOCAL_LABEL_PREFIX (TARGET_OLDABI ? "$" : ".")
  78
  79 /* The size in bytes of a DWARF field indicating an offset or length
  80    relative to a debug info section, specified to be 4 bytes in the DWARF-2
  81    specification.  The SGI/MIPS ABI defines it to be the same as PTR_SIZE.  */
  82 #define DWARF_OFFSET_SIZE PTR_SIZE
  83
  84 #undef ASM_PREFERRED_EH_DATA_FORMAT
  85 #if 0  /* We can't use relative addressing modes on NEWABI :-(  */
  86 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL)                      \
  87    (flag_pic                                                            \
  88     ? ((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_sdata4              \
  89     : DW_EH_PE_absptr)
  90 #endif
  91
  92 /* GNU/Linux doesn't use the same floating-point format that IRIX uses
  93    for long double.  There's no need to override this here, since
  94    ieee_quad_format is the default, but let's put this here to make
  95    sure nobody thinks we just forgot to set it to something else.  */
  96 #define MIPS_TFMODE_FORMAT mips_quad_format