version 1.5, 1994/09/28 17:02:44
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version 1.8, 1995/06/03 14:24:38
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/* |
/* |
$Id$ |
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Copyright 1992 by the ANSI figForth Development Group |
Copyright 1992 by the ANSI figForth Development Group |
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This is the machine-specific part for Intel 386 compatible processors |
This is the machine-specific part for Intel 386 compatible processors |
*/ |
*/ |
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#include "32bit.h" |
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/* Cell and UCell must be the same size as a pointer */ |
/* indirect threading is faster on the 486, on the 386 direct |
typedef long Cell; |
threading is probably faster. Therefore we leave defining |
typedef unsigned long UCell; |
DIRECT_THREADED to configure */ |
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/* DCell and UDCell must be twice as large as Cell */ |
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typedef long long DCell; |
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typedef unsigned long long UDCell; |
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/* define this if IEEE singles and doubles are available as C data types */ |
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#define IEEE_FP |
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/* the IEEE types are used only for loading and storing */ |
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/* the IEEE double precision type */ |
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typedef double DFloat; |
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/* the IEEE single precision type */ |
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typedef float SFloat; |
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/* define this if the least-significant byte is at the largets address */ |
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/* #define BIG_ENDIAN */ |
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/* define this if the processor cannot exploit instruction-level |
/* define this if the processor cannot exploit instruction-level |
parallelism (no pipelining or too few registers) */ |
parallelism (no pipelining or too few registers) */ |
Line 59 typedef float SFloat;
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Line 43 typedef float SFloat;
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#endif |
#endif |
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#ifdef FORCE_REG |
#ifdef FORCE_REG |
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#if (__GNUC__==2 && defined(__GNUC_MINOR__) && __GNUC_MINOR__==5) |
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/* i.e. gcc-2.5.x */ |
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/* this works with 2.5.7; nothing works with 2.5.8 */ |
#define IPREG asm("%esi") |
#define IPREG asm("%esi") |
#define SPREG asm("%edi") |
#define SPREG asm("%edi") |
#ifdef USE_TOS |
#ifdef USE_TOS |
Line 66 typedef float SFloat;
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Line 53 typedef float SFloat;
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#else |
#else |
#define CFAREG asm("%edx") |
#define CFAREG asm("%edx") |
#endif |
#endif |
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#else /* gcc-version */ |
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/* this works with 2.6.3 (and quite well, too) */ |
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/* since this is not very demanding, it's the default for other gcc versions */ |
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#define SPREG asm("%ebx") |
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#endif /* gcc-version */ |
#endif /* FORCE_REG */ |
#endif /* FORCE_REG */ |
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#define rint(x) floor((x)+0.5) |
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