include/grub/symbol.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 1999,2000,2001,2002,2006,2007,2008  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef GRUB_SYMBOL_HEADER
  20 #define GRUB_SYMBOL_HEADER      1
  21
  22 #include <config.h>
  23
  24 /* Apple assembler requires local labels to start with a capital L */
  25 #define LOCAL(sym)      L_ ## sym
  26
  27 /* Add an underscore to a C symbol in assembler code if needed. */
  28 #ifdef HAVE_ASM_USCORE
  29 # define EXT_C(sym)     _ ## sym
  30 #else
  31 # define EXT_C(sym)     sym
  32 #endif
  33
  34 #if defined (APPLE_CC)
  35 #define FUNCTION(x)     .globl EXT_C(x) ; EXT_C(x):
  36 #define VARIABLE(x)     .globl EXT_C(x) ; EXT_C(x):
  37 #elif ! defined (__CYGWIN__) && ! defined (__MINGW32__)
  38 #define FUNCTION(x)     .globl EXT_C(x) ; .type EXT_C(x), "function" ; EXT_C(x):
  39 #define VARIABLE(x)     .globl EXT_C(x) ; .type EXT_C(x), "object" ; EXT_C(x):
  40 #else
  41 /* .type not supported for non-ELF targets.  XXX: Check this in configure? */
  42 #define FUNCTION(x)     .globl EXT_C(x) ; .def EXT_C(x); .scl 2; .type 32; .endef; EXT_C(x):
  43 #define VARIABLE(x)     .globl EXT_C(x) ; .def EXT_C(x); .scl 2; .type 0; .endef; EXT_C(x):
  44 #endif
  45
  46 /* Mark an exported symbol.  */
  47 #ifndef GRUB_SYMBOL_GENERATOR
  48 # define EXPORT_FUNC(x) x
  49 # define EXPORT_VAR(x)  x
  50 #endif /* ! GRUB_SYMBOL_GENERATOR */
  51
  52 #endif /* ! GRUB_SYMBOL_HEADER */