gcc/config/xtensa/elf.h

   1 /* Xtensa/Elf configuration.
   2    Derived from the configuration for GCC for Intel i386 running Linux.
   3    Copyright (C) 2001 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22 /* Don't assume anything about the header files. */
  23 #define NO_IMPLICIT_EXTERN_C
  24
  25 #undef ASM_APP_ON
  26 #define ASM_APP_ON "#APP\n"
  27
  28 #undef ASM_APP_OFF
  29 #define ASM_APP_OFF "#NO_APP\n"
  30
  31 #undef MD_EXEC_PREFIX
  32 #undef MD_STARTFILE_PREFIX
  33
  34 #undef TARGET_VERSION
  35 #define TARGET_VERSION fputs (" (Xtensa/ELF)", stderr);
  36
  37 #undef SIZE_TYPE
  38 #define SIZE_TYPE "unsigned int"
  39
  40 #undef PTRDIFF_TYPE
  41 #define PTRDIFF_TYPE "int"
  42
  43 #undef WCHAR_TYPE
  44 #define WCHAR_TYPE "int"
  45
  46 #undef WCHAR_TYPE_SIZE
  47 #define WCHAR_TYPE_SIZE BITS_PER_WORD
  48
  49 #undef ASM_SPEC
  50 #define ASM_SPEC "%{v} %{mno-density:--no-density} \
  51                   %{mtext-section-literals:--text-section-literals} \
  52                   %{mno-text-section-literals:--no-text-section-literals} \
  53                   %{mtarget-align:--target-align} \
  54                   %{mno-target-align:--no-target-align} \
  55                   %{mlongcalls:--longcalls} \
  56                   %{mno-longcalls:--no-longcalls}"
  57
  58 #undef ASM_FINAL_SPEC
  59
  60 #undef LIB_SPEC
  61 #define LIB_SPEC "-lc -lsim -lc -lhandlers-sim"
  62
  63 #undef STARTFILE_SPEC
  64 #define STARTFILE_SPEC "crt1-sim%O%s crti%O%s crtbegin%O%s _vectors%O%s"
  65
  66 #undef ENDFILE_SPEC
  67 #define ENDFILE_SPEC "crtend%O%s crtn%O%s"
  68
  69 #undef LINK_SPEC
  70 #define LINK_SPEC \
  71  "%{shared:-shared} \
  72   %{!shared: \
  73     %{!static: \
  74       %{rdynamic:-export-dynamic} \
  75     %{static:-static}}}"
  76
  77 #undef CPP_PREDEFINES
  78 #define CPP_PREDEFINES "-D__XTENSA__ -D__ELF__ -Acpu=xtensa -Amachine=xtensa"
  79
  80 /* Local compiler-generated symbols must have a prefix that the assembler
  81    understands.   By default, this is $, although some targets (e.g.,
  82    NetBSD-ELF) need to override this. */
  83
  84 #ifndef LOCAL_LABEL_PREFIX
  85 #define LOCAL_LABEL_PREFIX      "."
  86 #endif
  87
  88 /* By default, external symbols do not have an underscore prepended. */
  89
  90 #ifndef USER_LABEL_PREFIX
  91 #define USER_LABEL_PREFIX       ""
  92 #endif
  93
  94 /* Define this macro if the assembler does not accept the character
  95    "." in label names.  By default constructors and destructors in G++
  96    have names that use ".".  If this macro is defined, these names
  97    are rewritten to avoid ".". */
  98 #define NO_DOT_IN_LABEL
  99
 100 /* Define NO_DOLLAR_IN_LABEL in your favorite tm file if your assembler
 101    doesn't allow $ in symbol names.  */
 102 #undef NO_DOLLAR_IN_LABEL
 103
 104 /* Do not force "-fpic" for this target.  */
 105 #define XTENSA_ALWAYS_PIC 0
 106
 107 /* Redefine the standard ELF version of ASM_DECLARE_FUNCTION_SIZE to
 108    allow adding the ".end literal_prefix" directive at the end of the
 109    function.  */
 110 #undef ASM_DECLARE_FUNCTION_SIZE
 111 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)            \
 112   do                                                            \
 113     {                                                           \
 114       if (!flag_inhibit_size_directive)                         \
 115         {                                                       \
 116           char label[256];                                      \
 117           static int labelno;                                   \
 118                                                                 \
 119           labelno++;                                            \
 120                                                                 \
 121           ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno);  \
 122           ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno);     \
 123                                                                 \
 124           fprintf (FILE, "%s", SIZE_ASM_OP);                    \
 125           assemble_name (FILE, (FNAME));                        \
 126           fprintf (FILE, ",");                                  \
 127           assemble_name (FILE, label);                          \
 128           fprintf (FILE, "-");                                  \
 129           assemble_name (FILE, (FNAME));                        \
 130           putc ('\n', FILE);                                    \
 131         }                                                       \
 132       XTENSA_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL);          \
 133     }                                                           \
 134   while (0)