go32.h

gcc库的原代码,对编程有很大帮助.

/* Configuration for an i386 running MS-DOS with djgpp/go32.  */

/* Don't assume anything about the header files. */
#define NO_IMPLICIT_EXTERN_C

#define HANDLE_SYSV_PRAGMA

#define YES_UNDERSCORES

#include "i386/gas.h"

#ifdef CPP_PREDEFINES
#undef CPP_PREDEFINES
#endif
#define CPP_PREDEFINES "-Dunix -Di386 -DGO32 -DMSDOS \
  -Asystem(unix) -Asystem(msdos) -Acpu(i386) -Amachine(i386)"

#undef EXTRA_SECTIONS
#define EXTRA_SECTIONS in_ctor, in_dtor

#undef EXTRA_SECTION_FUNCTIONS
#define EXTRA_SECTION_FUNCTIONS					\
  CTOR_SECTION_FUNCTION						\
  DTOR_SECTION_FUNCTION

#define CTOR_SECTION_FUNCTION					\
void								\
ctor_section ()							\
{								\
  if (in_section != in_ctor)					\
    {								\
      fprintf (asm_out_file, "\t.section .ctor\n");		\
      in_section = in_ctor;					\
    }								\
}

#define DTOR_SECTION_FUNCTION					\
void								\
dtor_section ()							\
{								\
  if (in_section != in_dtor)					\
    {								\
      fprintf (asm_out_file, "\t.section .dtor\n");		\
      in_section = in_dtor;					\
    }								\
}

#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)	\
  do {						\
    ctor_section ();				\
    fprintf (FILE, "%s\t", ASM_LONG);		\
    assemble_name (FILE, NAME);			\
    fprintf (FILE, "\n");			\
  } while (0)

#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)       	\
  do {						\
    dtor_section ();                   		\
    fprintf (FILE, "%s\t", ASM_LONG);		\
    assemble_name (FILE, NAME);              	\
    fprintf (FILE, "\n");			\
  } while (0)