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 #include <alpha/alpha.h>
  25
  26 #define OBSD_NO_DYNAMIC_LIBRARIES
  27 #define OBSD_HAS_DECLARE_FUNCTION_NAME
  28 #define OBSD_HAS_DECLARE_FUNCTION_SIZE
  29 #define OBSD_HAS_DECLARE_OBJECT
  30
  31 /* alpha ecoff supports only weak aliases, see below.  */
  32 #define ASM_WEAKEN_LABEL(FILE,NAME) ASM_OUTPUT_WEAK_ALIAS (FILE,NAME,0)
  33
  34 #include <openbsd.h>
  35
  36 /* Controlling the compilation driver.  */
  37
  38 /* alpha needs __start.  */
  39 #undef LINK_SPEC
  40 #define LINK_SPEC \
  41   "%{!nostdlib:%{!r*:%{!e*:-e __start}}} -dc -dp %{assert*}"
  42
  43 /* run-time target specifications */
  44 #define CPP_PREDEFINES "-D__unix__ -D__ANSI_COMPAT -Asystem=unix \
  45 -D__OpenBSD__ -D__alpha__ -D__alpha"
  46
  47 /* Layout of source language data types.  */
  48
  49 /* This must agree with <machine/ansi.h> */
  50 #undef SIZE_TYPE
  51 #define SIZE_TYPE "long unsigned int"
  52
  53 #undef PTRDIFF_TYPE
  54 #define PTRDIFF_TYPE "long int"
  55
  56 #undef WCHAR_TYPE
  57 #define WCHAR_TYPE "int"
  58
  59 #undef WCHAR_TYPE_SIZE
  60 #define WCHAR_TYPE_SIZE 32
  61
  62 \f
  63 #undef PREFERRED_DEBUGGING_TYPE
  64 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  65
  66 #define LOCAL_LABEL_PREFIX      "."
  67
  68 /* We don't have an init section yet.  */
  69 #undef HAS_INIT_SECTION
  70
  71 /* collect2 support (assembler format: macros for initialization).  */
  72
  73 /* Don't tell collect2 we use COFF as we don't have (yet ?) a dynamic ld
  74    library with the proper functions to handle this -> collect2 will
  75    default to using nm.  */
  76 #undef OBJECT_FORMAT_COFF
  77 #undef EXTENDED_COFF
  78
  79 /* Assembler format: exception region output.  */
  80
  81 /* All configurations that don't use elf must be explicit about not using
  82    dwarf unwind information. egcs doesn't try too hard to check internal
  83    configuration files...  */
  84 #ifdef INCOMING_RETURN_ADDR_RTX
  85 #undef DWARF2_UNWIND_INFO
  86 #define DWARF2_UNWIND_INFO 0
  87 #endif
  88
  89 /* Assembler format: file framework.  */
  90
  91 /* Taken from alpha/osf.h. This used to be common to all alpha
  92    configurations, but elf has departed from it.
  93    Check alpha/alpha.h, alpha/osf.h for it when egcs is upgraded.  */
  94 #ifndef ASM_FILE_START
  95 #define ASM_FILE_START(FILE)                                    \
  96 {                                                               \
  97   alpha_write_verstamp (FILE);                                  \
  98   fprintf (FILE, "\t.set noreorder\n");                         \
  99   fprintf (FILE, "\t.set volatile\n");                          \
 100   fprintf (FILE, "\t.set noat\n");                              \
 101   if (TARGET_SUPPORT_ARCH)                                      \
 102     fprintf (FILE, "\t.arch %s\n",                              \
 103              TARGET_CPU_EV6 ? "ev6"                             \
 104              : (TARGET_CPU_EV5                                  \
 105                 ? (TARGET_MAX ? "pca56" : TARGET_BWX ? "ev56" : "ev5") \
 106                 : "ev4"));                                      \
 107                                                                 \
 108   ASM_OUTPUT_SOURCE_FILENAME (FILE, main_input_filename);       \
 109 }
 110 #endif
 111
 112 /* Assembler format: label output.  */
 113
 114 #define ASM_OUTPUT_WEAK_ALIAS(FILE,NAME,VALUE)  \
 115  do {                                           \
 116   fputs ("\t.weakext\t", FILE);                 \
 117   assemble_name (FILE, NAME);                   \
 118   if (VALUE)                                    \
 119     {                                           \
 120       fputs (" , ", FILE);                      \
 121       assemble_name (FILE, VALUE);              \
 122     }                                           \
 123   fputc ('\n', FILE);                           \
 124  } while (0)
 125
 126