gcc/config/sh/elf.h

   1 /* Definitions of target machine for gcc for Hitachi Super-H using ELF.
   2    Copyright (C) 1996, 1997, 2000, 2001 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 /* Undefine some macros defined in both sh.h and svr4.h.  */
  23 #undef IDENT_ASM_OP
  24 #undef ASM_FILE_END
  25 #undef ASM_OUTPUT_SOURCE_LINE
  26 #undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
  27 #undef TARGET_ASM_NAMED_SECTION
  28 #undef ASM_DECLARE_FUNCTION_NAME
  29 #undef MAX_OFILE_ALIGNMENT
  30 #undef SIZE_TYPE
  31 #undef PTRDIFF_TYPE
  32
  33 /* Be ELF-like.  */
  34 /* TODO: convert includes to ${tm_file} list in config.gcc.  */
  35 #include "dbxelf.h"
  36 #include "elfos.h"
  37 #include "svr4.h"
  38
  39 /* No SDB debugging info.  */
  40 #undef SDB_DEBUGGING_INFO
  41
  42 /* Generate DWARF2 debugging information and make it the default */
  43 #undef DWARF2_DEBUGGING_INFO
  44 #define DWARF2_DEBUGGING_INFO 1
  45
  46 #undef PREFERRED_DEBUGGING_TYPE
  47 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
  48
  49 /* use a more compact format for line information */
  50 #define DWARF2_ASM_LINE_DEBUG_INFO 1
  51
  52 /* WCHAR_TYPE_SIZE is defined to BITS_PER_WORD in svr4.h, but
  53    BITS_PER_WORD isn't constant any more.  Fortunately, on no SH
  54    platform is it wider than 32-bits.  */
  55 #define MAX_WCHAR_TYPE_SIZE 32
  56
  57 /* The prefix to add to user-visible assembler symbols.
  58    Note that svr4.h redefined it from the original value (that we want)
  59    in sh.h */
  60
  61 #undef USER_LABEL_PREFIX
  62 #define USER_LABEL_PREFIX "_"
  63
  64 #undef LOCAL_LABEL_PREFIX
  65 #define LOCAL_LABEL_PREFIX "."
  66
  67 #undef ASM_FILE_START
  68 #define ASM_FILE_START(FILE) do {                               \
  69   output_file_directive ((FILE), main_input_filename);          \
  70 /* We also need to show the text section with the proper        \
  71    attributes as in TEXT_SECTION_ASM_OP, before dwarf2out       \
  72    emits it without attributes in TEXT_SECTION, else GAS        \
  73    will complain.  We can teach GAS specifically about the      \
  74    default attributes for our choice of text section, but       \
  75    then we would have to change GAS again if/when we change     \
  76    the text section name.  */                                   \
  77    fprintf ((FILE), "%s\n", TEXT_SECTION_ASM_OP);               \
  78   if (TARGET_LITTLE_ENDIAN)                                     \
  79     fprintf ((FILE), "\t.little\n");                            \
  80 } while (0)
  81
  82
  83
  84 /* Let code know that this is ELF.  */
  85 #define CPP_PREDEFINES "-D__sh__ -D__ELF__ -Acpu=sh -Amachine=sh"
  86
  87 #undef SIZE_TYPE
  88 #define SIZE_TYPE (TARGET_SH5 ? "long unsigned int" : "unsigned int")
  89
  90 #undef PTRDIFF_TYPE
  91 #define PTRDIFF_TYPE (TARGET_SH5 ? "long int" : "int")
  92 /* Pass -ml and -mrelax to the assembler and linker.  */
  93 #undef ASM_SPEC
  94 #define ASM_SPEC  "%{ml:-little} %{mrelax:-relax} \
  95 %{m5-compact:--isa=SHcompact} %{m5-compact-nofpu:--isa=SHcompact} \
  96 %{m5-32media:--isa=SHmedia --abi=32} %{m5-32media-nofpu:--isa=SHmedia --abi=32} \
  97 %{m5-64media:--isa=SHmedia --abi=64} %{m5-64media-nofpu:--isa=SHmedia --abi=64}"
  98
  99 #undef LINK_SPEC
 100 #define LINK_SPEC " \
 101 %{m5-compact:%{!ml:-m shelf32} %{ml:-m shlelf32}} \
 102 %{m5-compact-nofpu:%{!ml:-m shelf32} %{ml:-m shlelf32}} \
 103 %{m5-32media:%{!ml:-m shelf32} %{ml:-m shlelf32}} \
 104 %{m5-32media-nofpu:%{!ml:-m shelf32} %{ml:-m shlelf32}} \
 105 %{m5-64media:%{!ml:-m shelf64} %{ml:-m shlelf64}} \
 106 %{m5-64media-nofpu:%{!ml:-m shelf64} %{ml:-m shlelf64}} \
 107 %{!m5-64media:%{!m5-64media-nofpu:%{!m5-32media:%{!m5-32media-nofpu:%{!m5-compact:%{!m5-compact-nofpu:%{ml:-m shlelf}}}}}}} \
 108 %{mrelax:-relax}"
 109
 110 /* svr4.h undefined DBX_REGISTER_NUMBER, so we need to define it
 111    again.  */
 112 #define DBX_REGISTER_NUMBER(REGNO)                                      \
 113   (GENERAL_REGISTER_P (REGNO)                                           \
 114    ? ((REGNO) - FIRST_GENERAL_REG)                                      \
 115    : FP_REGISTER_P (REGNO)                                              \
 116    ? ((REGNO) - FIRST_FP_REG + (TARGET_SH5 ? (TARGET_SHCOMPACT ? 245    \
 117                                               : 77) : 25))              \
 118    : XD_REGISTER_P (REGNO)                                              \
 119    ? ((REGNO) - FIRST_XD_REG + (TARGET_SH5 ? 289 : 87))                 \
 120    : TARGET_REGISTER_P (REGNO)                                          \
 121    ? ((REGNO) - FIRST_TARGET_REG + 68)                                  \
 122    : (REGNO) == PR_REG                                                  \
 123    ? (TARGET_SH5 ? 241 : 17)                                            \
 124    : (REGNO) == T_REG                                                   \
 125    ? (TARGET_SH5 ? 242 : 18)                                            \
 126    : (REGNO) == GBR_REG                                                 \
 127    ? (TARGET_SH5 ? 238 : 19)                                            \
 128    : (REGNO) == MACH_REG                                                \
 129    ? (TARGET_SH5 ? 239 : 20)                                            \
 130    : (REGNO) == MACL_REG                                                \
 131    ? (TARGET_SH5 ? 240 : 21)                                            \
 132    : (REGNO) == FPUL_REG                                                \
 133    ? (TARGET_SH5 ? 244 : 23)                                            \
 134    : (abort(), -1))
 135
 136 #undef ASM_GENERATE_INTERNAL_LABEL
 137 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
 138   sprintf ((STRING), "*%s%s%ld", LOCAL_LABEL_PREFIX, (PREFIX), (long)(NUM))
 139
 140 #undef ASM_OUTPUT_INTERNAL_LABEL
 141 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
 142   asm_fprintf ((FILE), "%L%s%d:\n", (PREFIX), (NUM))
 143
 144 #undef  ASM_OUTPUT_SOURCE_LINE
 145 #define ASM_OUTPUT_SOURCE_LINE(file, line)                              \
 146 do                                                                      \
 147   {                                                                     \
 148     static int sym_lineno = 1;                                          \
 149     asm_fprintf ((file), ".stabn 68,0,%d,%LLM%d-",                      \
 150              (line), sym_lineno);                                       \
 151     assemble_name ((file),                                              \
 152                    XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0));\
 153     asm_fprintf ((file), "\n%LLM%d:\n", sym_lineno);                    \
 154     sym_lineno += 1;                                                    \
 155   }                                                                     \
 156 while (0)
 157
 158 #undef DBX_OUTPUT_MAIN_SOURCE_FILE_END
 159 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
 160 do {                                                                    \
 161   text_section ();                                                      \
 162   fprintf ((FILE), "\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO);     \
 163 } while (0)
 164
 165 #undef STARTFILE_SPEC
 166 #define STARTFILE_SPEC \
 167   "%{!shared: crt1.o%s} crti.o%s \
 168    %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
 169
 170 #undef ENDFILE_SPEC
 171 #define ENDFILE_SPEC \
 172   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"