gcc/config/i386/netbsd-elf.h

   1 /* Definitions of target machine for GNU compiler,
   2    for i386/ELF NetBSD systems.
   3    Copyright (C) 2001, 2002 Free Software Foundation, Inc.
   4    Contributed by matthew green <mrg@eterna.com.au>
   5
   6 This file is part of GNU CC.
   7
   8 GNU CC 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 GNU CC 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 GNU CC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 #define TARGET_OS_CPP_BUILTINS()                \
  24   do                                            \
  25     {                                           \
  26       NETBSD_OS_CPP_BUILTINS_ELF();             \
  27     }                                           \
  28   while (0)
  29
  30 /* Provide a LINK_SPEC appropriate for a NetBSD/i386 ELF target.
  31    This is a copy of LINK_SPEC from <netbsd-elf.h> tweaked for
  32    the i386 target.  */
  33
  34 #undef LINK_SPEC
  35 #define LINK_SPEC                                                       \
  36  "%{assert*} %{R*}                                                      \
  37   %{shared:-shared}                                                     \
  38   %{!shared:                                                            \
  39     -dc -dp                                                             \
  40     %{!nostdlib:                                                        \
  41       %{!r*:                                                            \
  42         %{!e*:-e __start}}}                                             \
  43     %{!static:                                                          \
  44       %{rdynamic:-export-dynamic}                                       \
  45       %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}        \
  46     %{static:-static}}"
  47
  48 #undef SUBTARGET_EXTRA_SPECS
  49 #define SUBTARGET_EXTRA_SPECS                   \
  50   { "netbsd_cpp_spec", NETBSD_CPP_SPEC },
  51
  52 /* Provide a CPP_SPEC appropriate for NetBSD.  */
  53
  54 #undef CPP_SPEC
  55 #define CPP_SPEC "%(cpp_cpu) %(netbsd_cpp_spec)"
  56
  57
  58 /* Make gcc agree with <machine/ansi.h> */
  59
  60 #undef SIZE_TYPE
  61 #define SIZE_TYPE "unsigned int"
  62
  63 #undef PTRDIFF_TYPE
  64 #define PTRDIFF_TYPE "int"
  65
  66 #undef ASM_APP_ON
  67 #define ASM_APP_ON "#APP\n"
  68
  69 #undef ASM_APP_OFF
  70 #define ASM_APP_OFF "#NO_APP\n"
  71
  72 #undef ASM_FINAL_SPEC
  73
  74 #undef ASM_COMMENT_START
  75 #define ASM_COMMENT_START "#"
  76
  77 #undef DBX_REGISTER_NUMBER
  78 #define DBX_REGISTER_NUMBER(n)  svr4_dbx_register_map[n]
  79
  80
  81 /* Output assembler code to FILE to call the profiler.  */
  82
  83 #undef NO_PROFILE_COUNTERS
  84 #define NO_PROFILE_COUNTERS
  85
  86 #undef FUNCTION_PROFILER
  87 #define FUNCTION_PROFILER(FILE, LABELNO)                                \
  88 {                                                                       \
  89   if (flag_pic)                                                         \
  90     fprintf (FILE, "\tcall __mcount@PLT\n");                            \
  91   else                                                                  \
  92     fprintf (FILE, "\tcall __mcount\n");                                \
  93 }
  94
  95
  96 #undef HAS_INIT_SECTION
  97
  98 /* This is how we tell the assembler that two symbols have the same value.  */
  99
 100 #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \
 101   do { assemble_name(FILE, NAME1);       \
 102        fputs(" = ", FILE);               \
 103        assemble_name(FILE, NAME2);       \
 104        fputc('\n', FILE); } while (0)
 105
 106 /* A C statement to output to the stdio stream FILE an assembler
 107    command to advance the location counter to a multiple of 1<<LOG
 108    bytes if it is within MAX_SKIP bytes.
 109
 110    This is used to align code labels according to Intel recommendations.  */
 111
 112 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
 113 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP)                  \
 114   if ((LOG) != 0) {                                                     \
 115     if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG));    \
 116     else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));    \
 117   }
 118 #endif
 119
 120 /* We always use gas here, so we don't worry about ECOFF assembler
 121    problems.  */
 122 #undef TARGET_GAS
 123 #define TARGET_GAS      1
 124
 125 /* Default to pcc-struct-return, because this is the ELF abi and
 126    we don't care about compatibility with older gcc versions.  */
 127 #define DEFAULT_PCC_STRUCT_RETURN 1
 128
 129 #define TARGET_VERSION fprintf (stderr, " (NetBSD/i386 ELF)");