gcc/config/sh/elf.h

   1 /* Definitions of target machine for gcc for Renesas / SuperH SH using ELF.
   2    Copyright (C) 1996, 1997, 2000, 2001, 2002, 2004
   3    Free Software Foundation, Inc.
   4    Contributed by Ian Lance Taylor <ian@cygnus.com>.
   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 2, 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 COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 /* Let sh.c know this is ELF.  */
  24 #undef TARGET_ELF
  25 #define TARGET_ELF 1
  26
  27 /* Generate DWARF2 debugging information and make it the default */
  28 #define DWARF2_DEBUGGING_INFO 1
  29
  30 #undef PREFERRED_DEBUGGING_TYPE
  31 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  32
  33 /* use a more compact format for line information */
  34 #define DWARF2_ASM_LINE_DEBUG_INFO 1
  35
  36 /* WCHAR_TYPE / WCHAR_TYPE_SIZE are defined to long int / BITS_PER_WORD in
  37    svr4.h, but these work out as 64 bit for shmedia64.  */
  38 #undef WCHAR_TYPE
  39 /* #define WCHAR_TYPE (TARGET_SH5 ? "int" : "long int") */
  40 #define WCHAR_TYPE SH_ELF_WCHAR_TYPE
  41
  42 #undef WCHAR_TYPE_SIZE
  43 #define WCHAR_TYPE_SIZE 32
  44
  45
  46 /* The prefix to add to user-visible assembler symbols.  */
  47
  48 #undef LOCAL_LABEL_PREFIX
  49 #define LOCAL_LABEL_PREFIX "."
  50
  51 #undef SIZE_TYPE
  52 #define SIZE_TYPE (TARGET_SH5 ? "long unsigned int" : "unsigned int")
  53
  54 #undef PTRDIFF_TYPE
  55 #define PTRDIFF_TYPE (TARGET_SH5 ? "long int" : "int")
  56
  57 /* Pass -ml and -mrelax to the assembler and linker.  */
  58 #undef ASM_SPEC
  59 #define ASM_SPEC SH_ASM_SPEC
  60 #undef SUBTARGET_ASM_ISA_SPEC
  61 #define SUBTARGET_ASM_ISA_SPEC "\
  62 %{m2a:--isa=sh2a} \
  63 %{m2a-single:--isa=sh2a} \
  64 %{m2a-single-only:--isa=sh2a} \
  65 %{m2a-nofpu:--isa=sh2a-nofpu} \
  66 %{m5-compact*:--isa=SHcompact} %{m5-32media*:--isa=SHmedia --abi=32} \
  67 %{m5-64media*:--isa=SHmedia --abi=64}" ASM_ISA_DEFAULT_SPEC
  68
  69 #undef LINK_SPEC
  70 #define LINK_SPEC SH_LINK_SPEC
  71 #undef LINK_EMUL_PREFIX
  72 #if TARGET_ENDIAN_DEFAULT == LITTLE_ENDIAN_BIT
  73 #define LINK_EMUL_PREFIX "sh%{!mb:l}elf"
  74 #else
  75 #define LINK_EMUL_PREFIX "sh%{ml:l}elf"
  76 #endif
  77
  78 /* svr4.h undefined DBX_REGISTER_NUMBER, so we need to define it
  79    again.  */
  80 #define DBX_REGISTER_NUMBER(REGNO) SH_DBX_REGISTER_NUMBER (REGNO)
  81
  82 #undef ASM_GENERATE_INTERNAL_LABEL
  83 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
  84   sprintf ((STRING), "*%s%s%ld", LOCAL_LABEL_PREFIX, (PREFIX), (long)(NUM))
  85
  86 #define DBX_LINES_FUNCTION_RELATIVE 1
  87 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
  88
  89 #undef STARTFILE_SPEC
  90 #define STARTFILE_SPEC \
  91   "%{!shared: crt1.o%s} crti.o%s \
  92    %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
  93
  94 #undef ENDFILE_SPEC
  95 #define ENDFILE_SPEC \
  96   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
  97
  98 /* ASM_OUTPUT_CASE_LABEL is defined in elfos.h.  With it,
  99    a redundant .align was generated.  */
 100 #undef  ASM_OUTPUT_CASE_LABEL