| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
*/ |
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#include "config.h" |
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#include <limits.h> |
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| typedef void *Label; |
typedef void *Label; |
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|
| /* symbol indexed constants */ |
/* symbol indexed constants */ |
| #include "machine.h" |
#include "machine.h" |
| |
|
| /* Forth data types */ |
/* Forth data types */ |
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/* Cell and UCell must be the same size as a pointer */ |
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typedef CELL_TYPE Cell; |
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typedef unsigned CELL_TYPE UCell; |
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#define CELL_BITS (sizeof(Cell) * CHAR_BIT) |
| typedef Cell Bool; |
typedef Cell Bool; |
| #define FLAG(b) (-(b)) |
#define FLAG(b) (-(b)) |
| #define FILEIO(error) (FLAG(error) & -37) |
#define FILEIO(error) (FLAG(error) & -37) |
| typedef double Float; |
typedef double Float; |
| typedef char *Address; |
typedef char *Address; |
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|
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#ifdef BUGGY_LONG_LONG |
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typedef struct { |
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Cell hi; |
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UCell lo; |
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} DCell; |
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|
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typedef struct { |
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UCell hi; |
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UCell lo; |
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} UDCell; |
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#define FETCH_DCELL(d,lo,hi) ((d)=(typeof(d)){(hi),(lo)}) |
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#define STORE_DCELL(d,low,high) ({ \ |
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typeof(d) _d = (d); \ |
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(low) = _d.lo; \ |
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(high)= _d.hi; \ |
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}) |
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|
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#define LONG2UD(l) ({UDCell _ud; _ud.hi=0; _ud.lo=(Cell)(l); _ud;}) |
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#define UD2LONG(ud) ((long)(ud.lo)) |
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#define DZERO ((DCell){0,0}) |
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|
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#else /* ! defined(BUGGY_LONG_LONG) */ |
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|
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/* DCell and UDCell must be twice as large as Cell */ |
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typedef DOUBLE_CELL_TYPE DCell; |
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typedef unsigned DOUBLE_CELL_TYPE UDCell; |
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|
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typedef union { |
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struct { |
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#ifdef WORDS_BIGENDIAN |
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Cell high; |
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UCell low; |
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#else |
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UCell low; |
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Cell high; |
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#endif; |
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} cells; |
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DCell dcell; |
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} Double_Store; |
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|
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#define FETCH_DCELL(d,lo,hi) ({ \ |
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Double_Store _d; \ |
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_d.cells.low = (lo); \ |
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_d.cells.high = (hi); \ |
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(d) = _d.dcell; \ |
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}) |
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|
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#define STORE_DCELL(d,lo,hi) ({ \ |
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Double_Store _d; \ |
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_d.dcell = (d); \ |
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(lo) = _d.cells.low; \ |
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(hi) = _d.cells.high; \ |
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}) |
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|
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#define LONG2UD(l) ((UDCell)(l)) |
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#define UD2LONG(ud) ((long)(ud)) |
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#define DZERO ((DCell)0) |
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|
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#endif /* ! defined(BUGGY_LONG_LONG) */ |
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|
| #ifdef DIRECT_THREADED |
#ifdef DIRECT_THREADED |
| typedef Label Xt; |
typedef Label Xt; |
| #else |
#else |
| typedef Label *Xt; |
typedef Label *Xt; |
| #endif |
#endif |
| |
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| Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp); |
|
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|
| #ifndef DIRECT_THREADED |
#ifndef DIRECT_THREADED |
| /* i.e. indirect threaded */ |
/* i.e. indirect threaded */ |
| /* the direct threaded version is machine dependent and resides in machine.h */ |
/* the direct threaded version is machine dependent and resides in machine.h */ |
| /* the does handler resides between DOES> and the following Forth code */ |
/* the does handler resides between DOES> and the following Forth code */ |
| #define DOES_HANDLER_SIZE (2*sizeof(Cell)) |
#define DOES_HANDLER_SIZE (2*sizeof(Cell)) |
| #define MAKE_DOES_HANDLER(addr) 0 /* do nothing */ |
#define MAKE_DOES_HANDLER(addr) 0 /* do nothing */ |
| #endif |
#endif /* !defined(DIRECT_THREADED) */ |
| |
|
| #ifdef DEBUG |
#ifdef DEBUG |
| # define NAME(string) fprintf(stderr,"%08lx: "string"\n",(Cell)ip); |
# define NAME(string) fprintf(stderr,"%08lx: "string"\n",(Cell)ip); |
| #else |
#else |
| #define CACHE_FLUSH(addr,size) |
#define CACHE_FLUSH(addr,size) |
| #endif |
#endif |
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|
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Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp); |
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|
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/* dblsub routines */ |
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DCell dnegate(DCell d1); |
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UDCell ummul (UCell a, UCell b); |
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DCell mmul (Cell a, Cell b); |
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UDCell umdiv (UDCell u, UCell v); |
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DCell smdiv (DCell num, Cell denom); |
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DCell fmdiv (DCell num, Cell denom); |
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|
