gcc/config/xtensa/elf.h

   1 /* Xtensa/Elf configuration.
   2    Derived from the configuration for GCC for Intel i386 running Linux.
   3    Copyright (C) 2001,2003 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, 51 Franklin Street, Fifth Floor, Boston, MA
  20 02110-1301, USA.  */
  21
  22 #define TARGET_SECTION_TYPE_FLAGS xtensa_multibss_section_type_flags
  23
  24 /* Don't assume anything about the header files.  */
  25 #define NO_IMPLICIT_EXTERN_C
  26
  27 #undef ASM_APP_ON
  28 #define ASM_APP_ON "#APP\n"
  29
  30 #undef ASM_APP_OFF
  31 #define ASM_APP_OFF "#NO_APP\n"
  32
  33 #undef MD_EXEC_PREFIX
  34 #undef MD_STARTFILE_PREFIX
  35
  36 #undef TARGET_VERSION
  37 #define TARGET_VERSION fputs (" (Xtensa/ELF)", stderr);
  38
  39 #undef WCHAR_TYPE
  40 #define WCHAR_TYPE "short unsigned int"
  41
  42 #undef WCHAR_TYPE_SIZE
  43 #define WCHAR_TYPE_SIZE 16
  44
  45 #undef ASM_SPEC
  46 #define ASM_SPEC \
  47  "%{v} \
  48   %{mtext-section-literals:--text-section-literals} \
  49   %{mno-text-section-literals:--no-text-section-literals} \
  50   %{mtarget-align:--target-align} \
  51   %{mno-target-align:--no-target-align} \
  52   %{mlongcalls:--longcalls} \
  53   %{mno-longcalls:--no-longcalls}"
  54
  55 #undef LIB_SPEC
  56 #define LIB_SPEC "-lc -lsim -lc -lhandlers-sim -lhal"
  57
  58 #undef STARTFILE_SPEC
  59 #define STARTFILE_SPEC \
  60   "crt1-sim%O%s crt0%O%s crti%O%s crtbegin%O%s _vectors%O%s"
  61
  62 #undef ENDFILE_SPEC
  63 #define ENDFILE_SPEC "crtend%O%s crtn%O%s"
  64
  65 #undef LINK_SPEC
  66 #define LINK_SPEC \
  67  "%{shared:-shared} \
  68   %{!shared: \
  69     %{!static: \
  70       %{rdynamic:-export-dynamic} \
  71     %{static:-static}}}"
  72
  73 #undef LOCAL_LABEL_PREFIX
  74 #define LOCAL_LABEL_PREFIX      "."
  75
  76 /* Avoid dots for compatibility with VxWorks.  */
  77 #undef NO_DOLLAR_IN_LABEL
  78 #define NO_DOT_IN_LABEL
  79
  80 /* Do not force "-fpic" for this target.  */
  81 #define XTENSA_ALWAYS_PIC 0
  82
  83 /* Redefine the standard ELF version of ASM_DECLARE_FUNCTION_SIZE to
  84    allow adding the ".end literal_prefix" directive at the end of the
  85    function.  */
  86 #undef ASM_DECLARE_FUNCTION_SIZE
  87 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)            \
  88   do                                                            \
  89     {                                                           \
  90       if (!flag_inhibit_size_directive)                         \
  91         ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                 \
  92       XTENSA_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL);          \
  93     }                                                           \
  94   while (0)
  95
  96 /* Search for headers in $tooldir/arch/include and for libraries and
  97    startfiles in $tooldir/arch/lib.  */
  98 #define GCC_DRIVER_HOST_INITIALIZATION \
  99 do \
 100 { \
 101   char *tooldir, *archdir; \
 102   tooldir = concat (tooldir_base_prefix, spec_machine, \
 103                     dir_separator_str, NULL); \
 104   if (!IS_ABSOLUTE_PATH (tooldir)) \
 105     tooldir = concat (standard_exec_prefix, spec_machine, dir_separator_str, \
 106                       spec_version, dir_separator_str, tooldir, NULL); \
 107   archdir = concat (tooldir, "arch", dir_separator_str, NULL); \
 108   add_prefix (&startfile_prefixes, \
 109               concat (archdir, "lib", dir_separator_str, NULL), \
 110               "GCC", PREFIX_PRIORITY_LAST, 0, 1); \
 111   add_prefix (&include_prefixes, archdir, \
 112               "GCC", PREFIX_PRIORITY_LAST, 0, 0); \
 113   } \
 114 while (0)
 115