projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 0d64f74c DE |
1 | /* Definitions of target machine for GNU compiler. "embedded" 68XXX. |
| 2 | This is meant to be included after m68k.h. | |
| c5c76735 | 3 | Copyright (C) 1994, 1995, 1998, 1999 Free Software Foundation, Inc. */ |
| 0d64f74c DE |
4 | |
| 5 | #define PTRDIFF_TYPE "long int" | |
| 6 | #define SIZE_TYPE "long unsigned int" | |
| 7 | ||
| 8 | /* In order for bitfields to work on a 68000, or with -mnobitfield, we must | |
| 9 | define either PCC_BITFIELD_TYPE_MATTERS or STRUCTURE_SIZE_BOUNDARY. | |
| 10 | Defining STRUCTURE_SIZE_BOUNDARY results in structure packing problems, | |
| 11 | so we define PCC_BITFIELD_TYPE_MATTERS. */ | |
| 12 | #define PCC_BITFIELD_TYPE_MATTERS 1 | |
| 13 | ||
| 14 | /* Undef PCC_STATIC_STRUCT_RETURN so that we get a re-entrant calling | |
| 15 | convention. */ | |
| 16 | #undef PCC_STATIC_STRUCT_RETURN | |
| 17 | ||
| 18 | /* Don't default to pcc-struct-return, so that we can return small structures | |
| 19 | and unions in registers, which is slightly more efficient. */ | |
| 20 | #define DEFAULT_PCC_STRUCT_RETURN 0 | |
| 21 | ||
| 22 | /* Return floating point values in a fp register. This make fp code a | |
| 23 | little bit faster. It also makes -msoft-float code incompatible with | |
| 24 | -m68881 code, so people have to be careful not to mix the two. */ | |
| 25 | #undef FUNCTION_VALUE | |
| 26 | #define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE)) | |
| 27 | ||
| 28 | #undef LIBCALL_VALUE | |
| c5c76735 JL |
29 | #define LIBCALL_VALUE(MODE) \ |
| 30 | gen_rtx_REG ((MODE), \ | |
| 31 | ((TARGET_68881 \ | |
| 32 | && ((MODE) == SFmode || (MODE) == DFmode \ | |
| 33 | || (MODE) == XFmode)) \ | |
| 0d64f74c DE |
34 | ? 16 : 0)) |
| 35 | ||
| 36 | #undef FUNCTION_VALUE_REGNO_P | |
| 37 | #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (TARGET_68881 && (N) == 16)) | |
| 38 | ||
| 39 | #undef NEEDS_UNTYPED_CALL | |
| 40 | #define NEEDS_UNTYPED_CALL 1 | |
| 9b3b5e8d | 41 | |
| 77c871e6 MM |
42 | #undef CPP_PREDEFINES |
| 43 | #define CPP_PREDEFINES "-Dmc68000 -D__embedded__ -Asystem(embedded) \ | |
| 44 | -Amachine(mc68000)" | |
| 45 | ||
| 0f220a3e | 46 | /* Override the default LIB_SPEC from gcc.c. We don't currently support |
| 2ebfd230 | 47 | profiling, or libg.a. */ |
| 77c871e6 | 48 | |
| f5c4bc60 | 49 | #undef LIB_SPEC |
| 0f220a3e | 50 | #define LIB_SPEC "-lc" |
| 77c871e6 | 51 | |
| 0f220a3e JW |
52 | /* Make this be null, since we want the crt0.o to come from the linker |
| 53 | script */ | |
| 77c871e6 | 54 | |
| f5c4bc60 | 55 | #undef STARTFILE_SPEC |
| 0f220a3e | 56 | #define STARTFILE_SPEC "" |