gcc/config/arm/coff.h

   1 /* Definitions of target machine for GNU compiler.
   2    For ARM with COFF object format.
   3    Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2002
   4    Free Software Foundation, Inc.
   5    Contributed by Doug Evans (devans@cygnus.com).
   6
   7    This file is part of GCC.
   8
   9    GCC is free software; you can redistribute it and/or modify it
  10    under the terms of the GNU General Public License as published
  11    by the Free Software Foundation; either version 2, or (at your
  12    option) any later version.
  13
  14    GCC is distributed in the hope that it will be useful, but WITHOUT
  15    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  16    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  17    License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with GCC; see the file COPYING.  If not, write to
  21    the Free Software Foundation, 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24 /* Note - it is important that this definition matches the one in tcoff.h.  */
  25 #undef  USER_LABEL_PREFIX
  26 #define USER_LABEL_PREFIX "_"
  27
  28 \f
  29 /* Run-time Target Specification.  */
  30 #undef  TARGET_VERSION
  31 #define TARGET_VERSION fputs (" (ARM/coff)", stderr)
  32
  33 #undef  TARGET_DEFAULT
  34 #define TARGET_DEFAULT (ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32 | ARM_FLAG_APCS_FRAME)
  35
  36 #ifndef MULTILIB_DEFAULTS
  37 #define MULTILIB_DEFAULTS \
  38   { "marm", "mlittle-endian", "msoft-float", "mapcs-32", "mno-thumb-interwork" }
  39 #endif
  40 \f
  41 /* This is COFF, but prefer stabs.  */
  42 #define SDB_DEBUGGING_INFO 1
  43
  44 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  45
  46 #include "dbxcoff.h"
  47 \f
  48 /* A C statement to output assembler commands which will identify the
  49    object file as having been compiled with GCC (or another GNU
  50    compiler).  */
  51
  52 /* This outputs a lot of .req's to define alias for various registers.
  53    Let's try to avoid this.  */
  54 #undef ASM_FILE_START
  55 #define ASM_FILE_START(STREAM)                                  \
  56   do                                                            \
  57     {                                                           \
  58       fprintf (STREAM, "%s Generated by gcc %s for ARM/coff\n", \
  59                ASM_COMMENT_START, version_string);              \
  60       fprintf (STREAM, ASM_APP_OFF);                            \
  61     }                                                           \
  62   while (0)
  63
  64 /* Switch into a generic section.  */
  65 #define TARGET_ASM_NAMED_SECTION  default_coff_asm_named_section
  66 \f
  67 /* Support the ctors/dtors and other sections.  */
  68
  69 #undef INIT_SECTION_ASM_OP
  70
  71 /* Define this macro if jump tables (for `tablejump' insns) should be
  72    output in the text section, along with the assembler instructions.
  73    Otherwise, the readonly data section is used.  */
  74 /* We put ARM jump tables in the text section, because it makes the code
  75    more efficient, but for Thumb it's better to put them out of band.  */
  76 #define JUMP_TABLES_IN_TEXT_SECTION (TARGET_ARM)
  77
  78 #undef  READONLY_DATA_SECTION_ASM_OP
  79 #define READONLY_DATA_SECTION_ASM_OP    "\t.section .rdata"
  80 #undef  CTORS_SECTION_ASM_OP
  81 #define CTORS_SECTION_ASM_OP    "\t.section .ctors,\"x\""
  82 #undef  DTORS_SECTION_ASM_OP
  83 #define DTORS_SECTION_ASM_OP    "\t.section .dtors,\"x\""
  84 \f
  85 /* Support the ctors/dtors sections for g++.  */
  86
  87 /* __CTOR_LIST__ and __DTOR_LIST__ must be defined by the linker script.  */
  88 #define CTOR_LISTS_DEFINED_EXTERNALLY
  89
  90 #undef DO_GLOBAL_CTORS_BODY
  91 #undef DO_GLOBAL_DTORS_BODY
  92
  93 /* The ARM development system defines __main.  */
  94 #define NAME__MAIN  "__gccmain"
  95 #define SYMBOL__MAIN __gccmain
  96
  97 #define SUPPORTS_INIT_PRIORITY 0