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Diffstat (limited to 'bcc/sizes.h')
| -rw-r--r-- | bcc/sizes.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/bcc/sizes.h b/bcc/sizes.h new file mode 100644 index 0000000..df0d141 --- /dev/null +++ b/bcc/sizes.h @@ -0,0 +1,50 @@ +/* sizes.h - target scalar type sizes for bcc */ + +/* Copyright (C) 1992 Bruce Evans */ + +/* + the compiler is not very portable in this area + it only directly supports I8088-I80386 and MC6809 + it assumes + sizeof(source long) >= sizeof(target long) + usual register size = int + long = 2 int sizes +*/ + +#define CHBITSTO 8 /* bits in a character */ +#define CHMASKTO 0xFF /* mask to reduce SOURCE int to TARGET uchar */ +#define INT16BITSTO 16 /* not accessed in non-16 bit case */ +#define INT32BITSTO 32 /* not accessed in non-32 bit case */ +#define MAXINTBITSTO 32 /* max bits in an integer (var processors) */ +#define MAXSCHTO 127 /* maximum signed character */ +#define MAXUCHTO 255 /* maximum unsigned character */ +#define MINSCHTO (-128) /* minimum signed character */ + +#ifdef MC6809 +# define is5bitoffset(n) ((uoffset_t) (n) + 0x10 < 0x20) +#endif +#define isbyteoffset(n) ((uoffset_t) (n) - MINSCHTO <= MAXSCHTO - MINSCHTO) +#define ischarconst(n) ((uvalue_t) (n) <= MAXUCHTO) +#define isnegbyteoffset(n) ((uvalue_t) (n) + MAXSCHTO <= MAXSCHTO - MINSCHTO) +#define isshortbranch(n) ((uoffset_t) (n) - MINSCHTO <= MAXSCHTO - MINSCHTO) + +#ifdef MC6809 +/* Hack to reduce number of direct page variables. */ +#define intmaskto ((uvalue_t) 0xFFFFL) +#define maxintto ((uvalue_t) 0x7FFFL) +#define maxlongto ((uvalue_t) 0x7FFFFFFFL) +#define maxoffsetto ((uvalue_t) 0x7FFFL) +#define maxshortto ((uvalue_t) 0x7FFFL) +#define maxuintto ((uvalue_t) 0xFFFFL) +#define maxushortto ((uvalue_t) 0xFFFFL) +#define shortmaskto ((uvalue_t) 0xFFFFL) +#else +extern uvalue_t intmaskto; /* mask for ints */ +extern uvalue_t maxintto; /* maximum int */ +extern uvalue_t maxlongto; /* maximum long */ +extern uvalue_t maxoffsetto; /* maximum offset */ +extern uvalue_t maxshortto; /* maximum short */ +extern uvalue_t maxuintto; /* maximum unsigned */ +extern uvalue_t maxushortto; /* maximum unsigned short */ +extern uvalue_t shortmaskto; /* mask for shorts */ +#endif |