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
   4    Free Software Foundation, Inc.
   5    Contributed by Doug Evans (devans@cygnus.com).
   6
   7 This file is part of GNU CC.
   8
   9 GNU CC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 GNU CC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GNU CC; 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 #include "semi.h"
  25 #include "aout.h"
  26
  27 /* Note - it is important that this definition matches the one in tcoff.h */
  28 #undef  USER_LABEL_PREFIX
  29 #define USER_LABEL_PREFIX "_"
  30
  31 \f
  32 /* Run-time Target Specification.  */
  33 #undef  TARGET_VERSION
  34 #define TARGET_VERSION fputs (" (ARM/coff)", stderr)
  35
  36 #undef  TARGET_DEFAULT
  37 #define TARGET_DEFAULT (ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32 | ARM_FLAG_APCS_FRAME)
  38
  39 #ifndef MULTILIB_DEFAULTS
  40 #define MULTILIB_DEFAULTS \
  41   { "marm", "mlittle-endian", "msoft-float", "mapcs-32", "mno-thumb-interwork" }
  42 #endif
  43 \f
  44 /* This is COFF, but prefer stabs.  */
  45 #define SDB_DEBUGGING_INFO
  46
  47 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  48
  49 #include "dbxcoff.h"
  50 \f
  51 /* A C statement to output assembler commands which will identify the
  52    object file as having been compiled with GNU CC (or another GNU
  53    compiler).  */
  54
  55 /* This outputs a lot of .req's to define alias for various registers.
  56    Let's try to avoid this.  */
  57 #undef ASM_FILE_START
  58 #define ASM_FILE_START(STREAM)                                  \
  59   do                                                            \
  60     {                                                           \
  61       fprintf (STREAM, "%s Generated by gcc %s for ARM/coff\n", \
  62                ASM_COMMENT_START, version_string);              \
  63       fprintf (STREAM, ASM_APP_OFF);                            \
  64     }                                                           \
  65   while (0)
  66
  67 /* Switch into a generic section.  */
  68 #define TARGET_ASM_NAMED_SECTION  default_coff_asm_named_section
  69 \f
  70 /* Support the ctors/dtors and other sections.  */
  71
  72 #undef INIT_SECTION_ASM_OP
  73
  74 /* Define this macro if jump tables (for `tablejump' insns) should be
  75    output in the text section, along with the assembler instructions.
  76    Otherwise, the readonly data section is used.  */
  77 #define JUMP_TABLES_IN_TEXT_SECTION 1
  78
  79 #undef  READONLY_DATA_SECTION
  80 #define READONLY_DATA_SECTION   rdata_section
  81 #undef  RDATA_SECTION_ASM_OP
  82 #define RDATA_SECTION_ASM_OP    "\t.section .rdata"
  83 #undef  CTORS_SECTION_ASM_OP
  84 #define CTORS_SECTION_ASM_OP    "\t.section .ctors,\"x\""
  85 #undef  DTORS_SECTION_ASM_OP
  86 #define DTORS_SECTION_ASM_OP    "\t.section .dtors,\"x\""
  87
  88 /* A list of other sections which the compiler might be "in" at any
  89    given time.  */
  90
  91 #undef EXTRA_SECTIONS
  92 #define EXTRA_SECTIONS SUBTARGET_EXTRA_SECTIONS in_rdata
  93
  94 #define SUBTARGET_EXTRA_SECTIONS
  95
  96 /* A list of extra section function definitions.  */
  97
  98 #undef EXTRA_SECTION_FUNCTIONS
  99 #define EXTRA_SECTION_FUNCTIONS \
 100   RDATA_SECTION_FUNCTION        \
 101   SUBTARGET_EXTRA_SECTION_FUNCTIONS
 102
 103 #define SUBTARGET_EXTRA_SECTION_FUNCTIONS
 104
 105 #define RDATA_SECTION_FUNCTION \
 106 void                                                            \
 107 rdata_section ()                                                \
 108 {                                                               \
 109   if (in_section != in_rdata)                                   \
 110     {                                                           \
 111       fprintf (asm_out_file, "%s\n", RDATA_SECTION_ASM_OP);     \
 112       in_section = in_rdata;                                    \
 113     }                                                           \
 114 }
 115 \f
 116 /* Support the ctors/dtors sections for g++.  */
 117
 118 #define INT_ASM_OP "\t.word\t"
 119
 120 /* __CTOR_LIST__ and __DTOR_LIST__ must be defined by the linker script.  */
 121 #define CTOR_LISTS_DEFINED_EXTERNALLY
 122
 123 #undef DO_GLOBAL_CTORS_BODY
 124 #undef DO_GLOBAL_DTORS_BODY
 125
 126 /* The ARM development system defines __main.  */
 127 #define NAME__MAIN  "__gccmain"
 128 #define SYMBOL__MAIN __gccmain