gcc/config/alpha/openbsd.h

   1 /* Configuration file for an alpha OpenBSD target.
   2    Copyright (C) 1999 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC 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 GNU CC 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 GNU CC; 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 #define OBSD_NO_DYNAMIC_LIBRARIES
  25 #define OBSD_HAS_DECLARE_FUNCTION_NAME
  26 #define OBSD_HAS_DECLARE_FUNCTION_SIZE
  27 #define OBSD_HAS_DECLARE_OBJECT
  28
  29 /* alpha ecoff supports only weak aliases, see below.  */
  30 #define ASM_WEAKEN_LABEL(FILE,NAME) ASM_OUTPUT_WEAK_ALIAS (FILE,NAME,0)
  31
  32 #include <openbsd.h>
  33
  34 /* Controlling the compilation driver.  */
  35
  36 /* alpha needs __start.  */
  37 #undef LINK_SPEC
  38 #define LINK_SPEC \
  39   "%{!nostdlib:%{!r*:%{!e*:-e __start}}} -dc -dp %{assert*}"
  40
  41 /* run-time target specifications */
  42 #define CPP_PREDEFINES "-D__unix__ -D__ANSI_COMPAT -Asystem=unix \
  43 -D__OpenBSD__ -D__alpha__ -D__alpha"
  44
  45 /* Layout of source language data types.  */
  46
  47 /* This must agree with <machine/ansi.h> */
  48 #undef SIZE_TYPE
  49 #define SIZE_TYPE "long unsigned int"
  50
  51 #undef PTRDIFF_TYPE
  52 #define PTRDIFF_TYPE "long int"
  53
  54 #undef WCHAR_TYPE
  55 #define WCHAR_TYPE "int"
  56
  57 #undef WCHAR_TYPE_SIZE
  58 #define WCHAR_TYPE_SIZE 32
  59
  60 \f
  61 #undef PREFERRED_DEBUGGING_TYPE
  62 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  63
  64 #define LOCAL_LABEL_PREFIX      "."
  65
  66 /* We don't have an init section yet.  */
  67 #undef HAS_INIT_SECTION
  68
  69 /* collect2 support (assembler format: macros for initialization).  */
  70
  71 /* Don't tell collect2 we use COFF as we don't have (yet ?) a dynamic ld
  72    library with the proper functions to handle this -> collect2 will
  73    default to using nm.  */
  74 #undef OBJECT_FORMAT_COFF
  75 #undef EXTENDED_COFF
  76
  77 /* Assembler format: exception region output.  */
  78
  79 /* All configurations that don't use elf must be explicit about not using
  80    dwarf unwind information. egcs doesn't try too hard to check internal
  81    configuration files...  */
  82 #ifdef INCOMING_RETURN_ADDR_RTX
  83 #undef DWARF2_UNWIND_INFO
  84 #define DWARF2_UNWIND_INFO 0
  85 #endif
  86
  87 /* Assembler format: file framework.  */
  88
  89 /* Taken from alpha/osf.h. This used to be common to all alpha
  90    configurations, but elf has departed from it.
  91    Check alpha/alpha.h, alpha/osf.h for it when egcs is upgraded.  */
  92 #ifndef ASM_FILE_START
  93 #define ASM_FILE_START(FILE)                                    \
  94 {                                                               \
  95   alpha_write_verstamp (FILE);                                  \
  96   fprintf (FILE, "\t.set noreorder\n");                         \
  97   fprintf (FILE, "\t.set volatile\n");                          \
  98   fprintf (FILE, "\t.set noat\n");                              \
  99   if (TARGET_SUPPORT_ARCH)                                      \
 100     fprintf (FILE, "\t.arch %s\n",                              \
 101              TARGET_CPU_EV6 ? "ev6"                             \
 102              : (TARGET_CPU_EV5                                  \
 103                 ? (TARGET_MAX ? "pca56" : TARGET_BWX ? "ev56" : "ev5") \
 104                 : "ev4"));                                      \
 105                                                                 \
 106   ASM_OUTPUT_SOURCE_FILENAME (FILE, main_input_filename);       \
 107 }
 108 #endif
 109
 110 /* Assembler format: label output.  */
 111
 112 #define ASM_OUTPUT_WEAK_ALIAS(FILE,NAME,VALUE)  \
 113  do {                                           \
 114   fputs ("\t.weakext\t", FILE);                 \
 115   assemble_name (FILE, NAME);                   \
 116   if (VALUE)                                    \
 117     {                                           \
 118       fputs (" , ", FILE);                      \
 119       assemble_name (FILE, VALUE);              \
 120     }                                           \
 121   fputc ('\n', FILE);                           \
 122  } while (0)
 123
 124