gcc/config/psos.h

   1 /* Operating system specific defines to be used when targeting GCC for some
   2    embedded system running pSOS. We assume GNU tools with ELF, but
   3    try to maintain compatibility with the MRI tools. Based on svr4.h.
   4    Copyright (C) 1996, 1999, 2000 Free Software Foundation, Inc.
   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    To use this file, make up a file with a name like:
  24
  25         ?????-psos.h
  26
  27    where ????? is replaced by the name of the basic hardware that you
  28    are targeting for.  Then, in the file ?????-psos.h, put something
  29    like:
  30
  31         #include "?????.h"
  32         #include "psos.h"
  33
  34    followed by any really system-specific defines (or overrides of
  35    defines) which you find that you need.
  36 */
  37
  38
  39 /* Define a symbol indicating that we are using psos.h.  */
  40
  41 #define USING_PSOS_H
  42
  43
  44 /* All pSOS targets currently use the ELF object file format.  */
  45
  46 #define OBJECT_FORMAT_ELF
  47
  48
  49 /* Provide a NULL STARTFILE_SPEC. The startfile cannot be specified
  50    here because it depends on the architecture (e.g. 68K), the
  51    board-support package (e.g. M162) and the run-time configuration
  52    (e.g. application vs. ram-image vs. rom-image). Specify the
  53    startfile in a linker-script created from the generic
  54    architecture-specific linker-scripts.  */
  55
  56 #undef  STARTFILE_SPEC
  57 #define STARTFILE_SPEC ""
  58
  59
  60 /* Predefined macros (independent of processor type).  */
  61
  62 #undef CPP_PREDEFINES
  63 #define CPP_PREDEFINES "-Dpsos"
  64
  65
  66 /* Implicit library calls should use ANSI memcpy rather than BSD
  67    bcopy, etc.  */
  68
  69 #define TARGET_MEM_FUNCTIONS
  70
  71 /* This is how we tell the assembler that a symbol is weak.  */
  72
  73 #define ASM_WEAKEN_LABEL(FILE,NAME) \
  74   do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
  75        fputc ('\n', FILE); } while (0)
  76
  77 /* Switch into a generic section.  */
  78 #define TARGET_ASM_NAMED_SECTION  default_elf_asm_named_section
  79
  80 /* Use DBX debugging info by default.  */
  81
  82 #ifndef PREFERRED_DEBUGGING_TYPE
  83 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  84 #endif
  85
  86 /* For pSOS we use DBX debugging info.  */
  87
  88 #define DBX_DEBUGGING_INFO 1