gcc/config/sh/elf.h

   1 /* Definitions of target machine for gcc for Hitachi / SuperH SH using ELF.
   2    Copyright (C) 1996, 1997, 2000, 2001, 2002 Free Software Foundation, Inc.
   3    Contributed by Ian Lance Taylor <ian@cygnus.com>.
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 /* Generate DWARF2 debugging information and make it the default */
  23 #undef DWARF2_DEBUGGING_INFO
  24 #define DWARF2_DEBUGGING_INFO 1
  25
  26 #undef PREFERRED_DEBUGGING_TYPE
  27 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  28
  29 /* use a more compact format for line information */
  30 #define DWARF2_ASM_LINE_DEBUG_INFO 1
  31
  32 /* WCHAR_TYPE / WCHAR_TYPE_SIZE are defined to long int / BITS_PER_WORD in
  33    svr4.h, but these work out as 64 bit for shmedia64.  */
  34 #undef WCHAR_TYPE
  35 /* #define WCHAR_TYPE (TARGET_SH5 ? "int" : "long int") */
  36 #define WCHAR_TYPE SH_ELF_WCHAR_TYPE
  37
  38 #undef WCHAR_TYPE_SIZE
  39 #define WCHAR_TYPE_SIZE 32
  40
  41
  42 /* The prefix to add to user-visible assembler symbols.  */
  43
  44 #undef LOCAL_LABEL_PREFIX
  45 #define LOCAL_LABEL_PREFIX "."
  46
  47 #undef ASM_FILE_START
  48 #define ASM_FILE_START(FILE) do {                               \
  49   output_file_directive ((FILE), main_input_filename);          \
  50 /* We also need to show the text section with the proper        \
  51    attributes as in TEXT_SECTION_ASM_OP, before dwarf2out       \
  52    emits it without attributes in TEXT_SECTION, else GAS        \
  53    will complain.  We can teach GAS specifically about the      \
  54    default attributes for our choice of text section, but       \
  55    then we would have to change GAS again if/when we change     \
  56    the text section name.  */                                   \
  57    fprintf ((FILE), "%s\n", TEXT_SECTION_ASM_OP);               \
  58   if (TARGET_LITTLE_ENDIAN)                                     \
  59     fprintf ((FILE), "\t.little\n");                            \
  60 } while (0)
  61
  62
  63
  64 /* Let code know that this is ELF.  */
  65 #define TARGET_OBJFMT_CPP_BUILTINS() builtin_define ("__ELF__")
  66
  67 #undef SIZE_TYPE
  68 #define SIZE_TYPE (TARGET_SH5 ? "long unsigned int" : "unsigned int")
  69
  70 #undef PTRDIFF_TYPE
  71 #define PTRDIFF_TYPE (TARGET_SH5 ? "long int" : "int")
  72 /* Pass -ml and -mrelax to the assembler and linker.  */
  73 #undef ASM_SPEC
  74 #define ASM_SPEC  "%{ml:-little} %{mrelax:-relax} \
  75 %{m5-compact:--isa=SHcompact} %{m5-compact-nofpu:--isa=SHcompact} \
  76 %{m5-32media:--isa=SHmedia --abi=32} %{m5-32media-nofpu:--isa=SHmedia --abi=32} \
  77 %{m5-64media:--isa=SHmedia --abi=64} %{m5-64media-nofpu:--isa=SHmedia --abi=64}"
  78
  79 #undef LINK_SPEC
  80 #define LINK_SPEC SH_LINK_SPEC
  81 #undef LINK_EMUL_PREFIX
  82 #if TARGET_ENDIAN_DEFAULT == LITTLE_ENDIAN_BIT
  83 #define LINK_EMUL_PREFIX "sh%{!mb:l}elf"
  84 #else
  85 #define LINK_EMUL_PREFIX "sh%{ml:l}elf"
  86 #endif
  87
  88 /* svr4.h undefined DBX_REGISTER_NUMBER, so we need to define it
  89    again.  */
  90 #define DBX_REGISTER_NUMBER(REGNO) SH_DBX_REGISTER_NUMBER (REGNO)
  91
  92 #undef ASM_GENERATE_INTERNAL_LABEL
  93 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
  94   sprintf ((STRING), "*%s%s%ld", LOCAL_LABEL_PREFIX, (PREFIX), (long)(NUM))
  95
  96 #undef ASM_OUTPUT_INTERNAL_LABEL
  97 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
  98   asm_fprintf ((FILE), "%L%s%d:\n", (PREFIX), (NUM))
  99
 100 #undef  ASM_OUTPUT_SOURCE_LINE
 101 #define ASM_OUTPUT_SOURCE_LINE(file, line)                              \
 102 do                                                                      \
 103   {                                                                     \
 104     static int sym_lineno = 1;                                          \
 105     asm_fprintf ((file), ".stabn 68,0,%d,%LLM%d-",                      \
 106              (line), sym_lineno);                                       \
 107     assemble_name ((file),                                              \
 108                    XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0));\
 109     asm_fprintf ((file), "\n%LLM%d:\n", sym_lineno);                    \
 110     sym_lineno += 1;                                                    \
 111   }                                                                     \
 112 while (0)
 113
 114 #undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
 115 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
 116 do {                                                                    \
 117   text_section ();                                                      \
 118   fprintf ((FILE), "\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO);     \
 119 } while (0)
 120
 121 #undef STARTFILE_SPEC
 122 #define STARTFILE_SPEC \
 123   "%{!shared: crt1.o%s} crti.o%s \
 124    %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
 125
 126 #undef ENDFILE_SPEC
 127 #define ENDFILE_SPEC \
 128   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
 129
 130 /* ASM_OUTPUT_CASE_LABEL is defined in elfos.h.  With it,
 131    a redundant .align was generated.  */
 132 #undef  ASM_OUTPUT_CASE_LABEL