gcc/config/alpha/openbsd.h

   1 /* Configuration file for an alpha OpenBSD target.
   2    Copyright (C) 1999, 2003 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* We settle for little endian for now.  */
  22 #define TARGET_ENDIAN_DEFAULT 0
  23
  24 /* Controlling the compilation driver.  */
  25
  26 /* alpha needs __start.  */
  27 #undef LINK_SPEC
  28 #define LINK_SPEC \
  29   "%{!nostdlib:%{!r*:%{!e*:-e __start}}} -dc -dp %{assert*}"
  30
  31 /* run-time target specifications */
  32 #define TARGET_OS_CPP_BUILTINS()                \
  33     do {                                        \
  34         builtin_define ("__OpenBSD__");         \
  35         builtin_define ("__ANSI_COMPAT");       \
  36         builtin_define ("__unix__");            \
  37         builtin_assert ("system=unix");         \
  38     } while (0)
  39
  40 /* Layout of source language data types.  */
  41
  42 /* This must agree with <machine/ansi.h> */
  43 #undef SIZE_TYPE
  44 #define SIZE_TYPE "long unsigned int"
  45
  46 #undef PTRDIFF_TYPE
  47 #define PTRDIFF_TYPE "long int"
  48
  49 #undef WCHAR_TYPE
  50 #define WCHAR_TYPE "int"
  51
  52 #undef WCHAR_TYPE_SIZE
  53 #define WCHAR_TYPE_SIZE 32
  54
  55 \f
  56 #undef PREFERRED_DEBUGGING_TYPE
  57 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  58
  59 #define LOCAL_LABEL_PREFIX      "."
  60
  61 /* We don't have an init section yet.  */
  62 #undef HAS_INIT_SECTION
  63
  64 /* collect2 support (assembler format: macros for initialization).  */
  65
  66 /* Don't tell collect2 we use COFF as we don't have (yet ?) a dynamic ld
  67    library with the proper functions to handle this -> collect2 will
  68    default to using nm.  */
  69 #undef OBJECT_FORMAT_COFF
  70 #undef EXTENDED_COFF
  71
  72 /* Assembler format: exception region output.  */
  73
  74 /* All configurations that don't use elf must be explicit about not using
  75    dwarf unwind information.  */
  76 #ifdef INCOMING_RETURN_ADDR_RTX
  77 #undef DWARF2_UNWIND_INFO
  78 #define DWARF2_UNWIND_INFO 0
  79 #endif
  80
  81 /* Assembler format: label output.  */
  82
  83 /* alpha ecoff supports only weak aliases.  */
  84 #undef ASM_WEAKEN_LABEL
  85 #define ASM_WEAKEN_LABEL(FILE,NAME) ASM_OUTPUT_WEAK_ALIAS (FILE,NAME,0)
  86
  87 #define ASM_OUTPUT_WEAK_ALIAS(FILE,NAME,VALUE)  \
  88  do {                                           \
  89   fputs ("\t.weakext\t", FILE);                 \
  90   assemble_name (FILE, NAME);                   \
  91   if (VALUE)                                    \
  92     {                                           \
  93       fputs (" , ", FILE);                      \
  94       assemble_name (FILE, VALUE);              \
  95     }                                           \
  96   fputc ('\n', FILE);                           \
  97  } while (0)
  98
  99