diff options
Diffstat (limited to 'gcc-4.9/gcc/config/m68k/m68kemb.h')
| -rw-r--r-- | gcc-4.9/gcc/config/m68k/m68kemb.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/m68k/m68kemb.h b/gcc-4.9/gcc/config/m68k/m68kemb.h new file mode 100644 index 000000000..681a1836e --- /dev/null +++ b/gcc-4.9/gcc/config/m68k/m68kemb.h @@ -0,0 +1,52 @@ +/* Definitions of target machine for GNU compiler. "embedded" 68XXX. + This is meant to be included after m68k.h. + Copyright (C) 1994-2014 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 + +/* 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 + +#undef FUNCTION_VALUE +#define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE)) + +#undef LIBCALL_VALUE +#define LIBCALL_VALUE(MODE) \ + m68k_libcall_value (MODE) + +#undef FUNCTION_VALUE_REGNO_P +#define FUNCTION_VALUE_REGNO_P(N) \ + ((N) == D0_REG || (TARGET_68881 && (N) == FP0_REG)) + +#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 "" |