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/* Definitions of target machine for GNU compiler.  "embedded" 68XXX.

   This is meant to be included after m68k.h.

   Copyright (C) 1994, 1995, 1998, 1999, 2004 Free Software Foundation, Inc.  */

/* Override the SVR4 ABI for this target.  */

#define PTRDIFF_TYPE "long int"

#define SIZE_TYPE "long unsigned int"

/* In order for bitfields to work on a 68000, or with -mnobitfield, we must

   define either PCC_BITFIELD_TYPE_MATTERS or STRUCTURE_SIZE_BOUNDARY.

   Defining STRUCTURE_SIZE_BOUNDARY results in structure packing problems,

   so we define PCC_BITFIELD_TYPE_MATTERS.  */

#define PCC_BITFIELD_TYPE_MATTERS 1

/* Undef PCC_STATIC_STRUCT_RETURN so that we get a re-entrant calling

   convention.  */

#undef PCC_STATIC_STRUCT_RETURN

/* Don't default to pcc-struct-return, so that we can return small structures

   and unions in registers, which is slightly more efficient.  */

#define DEFAULT_PCC_STRUCT_RETURN 0

/* Return floating point values in a fp register.  This make fp code a

   little bit faster.  It also makes -msoft-float code incompatible with

   -m68881 code, so people have to be careful not to mix the two.  */

#undef FUNCTION_VALUE

#define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))

#undef LIBCALL_VALUE

#define LIBCALL_VALUE(MODE)                                     \

 gen_rtx_REG ((MODE),                                           \

              ((TARGET_68881                                    \

                && ((MODE) == SFmode || (MODE) == DFmode        \

                    || (MODE) == XFmode))                       \

           ? 16 : 0))

#undef FUNCTION_VALUE_REGNO_P

#define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (TARGET_68881 && (N) == 16))

#undef NEEDS_UNTYPED_CALL

#define NEEDS_UNTYPED_CALL 1

/* Target OS builtins.  */

#define TARGET_OS_CPP_BUILTINS()                \

  do                                            \

    {                                           \

      builtin_define ("__embedded__");          \

    }                                           \

  while (0)

/* Override the default LIB_SPEC from gcc.c.  We don't currently support

   profiling, or libg.a.  */

#undef  LIB_SPEC

#define LIB_SPEC "-lc"

/* Make this be null, since we want the crt0.o to come from the linker

   script */

#undef  STARTFILE_SPEC

#define STARTFILE_SPEC ""