gcc/config/m68k/coff.h

   1 /* Definitions of target machine for GNU compiler.
   2    m68k series COFF object files and debugging, version.
   3    Copyright (C) 1994, 1996, 1997, 2000, 2002, 2003, 2004, 2007
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC 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 3, or (at your option)
  11 any later version.
  12
  13 GCC 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 GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 /* This file is included after m68k.h by CPU COFF specific files.  It
  23    is not a complete target itself.  */
  24
  25 /* Used in m68k.c to include required support code.  */
  26
  27 #define M68K_TARGET_COFF 1
  28
  29 /* Generate sdb debugging information.  */
  30
  31 #define SDB_DEBUGGING_INFO 1
  32
  33 /* COFF symbols don't start with an underscore.  */
  34
  35 #undef USER_LABEL_PREFIX
  36 #define USER_LABEL_PREFIX ""
  37
  38 /* Use a prefix for local labels, just to be on the save side.  */
  39
  40 #undef LOCAL_LABEL_PREFIX
  41 #define LOCAL_LABEL_PREFIX "."
  42
  43 /* Use a register prefix to avoid clashes with external symbols (classic
  44    example: `extern char PC;' in termcap).  */
  45
  46 #undef REGISTER_PREFIX
  47 #define REGISTER_PREFIX "%"
  48
  49 /* config/m68k.md has an explicit reference to the program counter,
  50    prefix this by the register prefix.  */
  51
  52 #define ASM_RETURN_CASE_JUMP                            \
  53   do {                                                  \
  54     if (TARGET_COLDFIRE)                                \
  55       {                                                 \
  56         if (ADDRESS_REG_P (operands[0]))                \
  57           return "jmp %%pc@(2,%0:l)";                   \
  58         else                                            \
  59           return "ext%.l %0\n\tjmp %%pc@(2,%0:l)";      \
  60       }                                                 \
  61     else                                                \
  62       return "jmp %%pc@(2,%0:w)";                       \
  63   } while (0)
  64
  65 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
  66
  67 /* If defined, a C expression whose value is a string containing the
  68    assembler operation to identify the following data as uninitialized global
  69    data.  */
  70
  71 #define BSS_SECTION_ASM_OP      "\t.section\t.bss"
  72
  73 /* A C statement (sans semicolon) to output to the stdio stream
  74    FILE the assembler definition of uninitialized global DECL named
  75    NAME whose size is SIZE bytes and alignment is ALIGN bytes.
  76    Try to use asm_output_aligned_bss to implement this macro.  */
  77
  78 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
  79   asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
  80
  81 /* Switch into a generic section.  */
  82 #undef TARGET_ASM_NAMED_SECTION
  83 #define TARGET_ASM_NAMED_SECTION  m68k_coff_asm_named_section
  84
  85 /* Don't assume anything about startfiles.  */
  86
  87 #undef STARTFILE_SPEC
  88 #define STARTFILE_SPEC ""