Diff for /gforth/Attic/engine.c between versions 1.4 and 1.10

version 1.4, 1994/05/05 15:46:42 version 1.10, 1994/07/08 15:00:35
Line 13 Line 13
 #include <assert.h>  #include <assert.h>
 #include <stdlib.h>  #include <stdlib.h>
 #include <time.h>  #include <time.h>
   #include <sys/time.h>
 #include "forth.h"  #include "forth.h"
 #include "io.h"  #include "io.h"
 extern unlink(char *);  
 extern ftruncate(int, int);  
 typedef union {  typedef union {
   struct {    struct {
 #ifdef BIG_ENDIAN  #ifdef BIG_ENDIAN
Line 72  typedef struct F83Name { Line 70  typedef struct F83Name {
 #define FTOS (fp[0])  #define FTOS (fp[0])
 #endif  #endif
 #define CA_DODOES       (symbols[DODOES])  
 int emitcounter;  int emitcounter;
 #define NULLC '\0'  #define NULLC '\0'
Line 86  int emitcounter; Line 80  int emitcounter;
 static char* fileattr[6]={"r","rb","r+","r+b","w+","w+b"};  static char* fileattr[6]={"r","rb","r+","r+b","w+","w+b"};
 Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp)  Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp)
 /* executes code at ip, if ip!=NULL  /* executes code at ip, if ip!=NULL
    returns array of machine code labels (for use in a loader), if ip==NULL     returns array of machine code labels (for use in a loader), if ip==NULL
    This is very preliminary, as the bootstrap architecture is not yet decided  
 */  */
 {  {
   Xt cfa;    Xt cfa;
   Address lp=NULL;  
   Address up=NULL;    Address up=NULL;
   static Label symbols[]= {    static Label symbols[]= {
     &&docol,      &&docol,
Line 101  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 93  Label *engine(Xt *ip, Cell *sp, Cell *rp
     &&dovar,      &&dovar,
     &&douser,      &&douser,
     &&dodoes,      &&dodoes,
     &&docol,  /* dummy for does handler address */      &&dodoes,  /* dummy for does handler address */
 #include "prim_labels.i"  #include "prim_labels.i"
   };    };
     int throw_code;
   IF_TOS(register Cell TOS;)    IF_TOS(register Cell TOS;)
   IF_FTOS(Float FTOS;)    IF_FTOS(Float FTOS;)
 #ifdef CPU_DEP  #ifdef CPU_DEP
Line 113  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 106  Label *engine(Xt *ip, Cell *sp, Cell *rp
   if (ip == NULL)    if (ip == NULL)
     return symbols;      return symbols;
     if ((throw_code=setjmp(throw_jmp_buf))) {
       static Cell signal_data_stack[8];
        /* AFAIK, it's not guarateed that the registers have the right value
           after a longjump, so we avoid using the current values.
           If it were guaranteed that the registers keep their values, we could
           call a signal handler in Forth instead of doing the throw from C */
       sp = &signal_data_stack[7];
       TOS = throw_code;
       ip = throw_ip;
   IF_TOS(TOS = sp[0]);    IF_TOS(TOS = sp[0]);
   IF_FTOS(FTOS = fp[0]);    IF_FTOS(FTOS = fp[0]);
   prep_terminal();    prep_terminal();
Line 120  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 126  Label *engine(Xt *ip, Cell *sp, Cell *rp
  docol:   docol:
 #ifdef DEBUG  #ifdef DEBUG
   printf("col: %x\n",(Cell)PFA1(cfa));    printf("%08x: col: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
 #endif  #endif
 #ifdef undefined  #ifdef undefined
   /* this is the simple version */    /* this is the simple version */
Line 144  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 150  Label *engine(Xt *ip, Cell *sp, Cell *rp
  docon:   docon:
 #ifdef DEBUG  #ifdef DEBUG
   printf("con: %x\n",*(Cell*)PFA1(cfa));    printf("%08x: con: %08x\n",(Cell)ip,*(Cell*)PFA1(cfa));
 #endif  #endif
 #ifdef USE_TOS  #ifdef USE_TOS
   *sp-- = TOS;    *sp-- = TOS;
Line 156  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 162  Label *engine(Xt *ip, Cell *sp, Cell *rp
  dovar:   dovar:
 #ifdef DEBUG  #ifdef DEBUG
   printf("var: %x\n",(Cell)PFA1(cfa));    printf("%08x: var: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
 #endif  #endif
 #ifdef USE_TOS  #ifdef USE_TOS
   *sp-- = TOS;    *sp-- = TOS;
Line 170  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 176  Label *engine(Xt *ip, Cell *sp, Cell *rp
  douser:   douser:
 #ifdef DEBUG  #ifdef DEBUG
   printf("user: %x\n",(Cell)PFA1(cfa));    printf("%08x: user: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
 #endif  #endif
 #ifdef USE_TOS  #ifdef USE_TOS
   *sp-- = TOS;    *sp-- = TOS;
   TOS = up+*(Cell*)PFA1(cfa);    TOS = (Cell)(up+*(Cell*)PFA1(cfa));
 #else  #else
   *--sp = up+*(Cell*)PFA1(cfa);    *--sp = (Cell)(up+*(Cell*)PFA1(cfa));
 #endif  #endif
   NEXT;    NEXT;
Line 199  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 205  Label *engine(Xt *ip, Cell *sp, Cell *rp
      */       */
 #ifdef DEBUG  #ifdef DEBUG
   printf("does: %x\n",(Cell)PFA(cfa)); fflush(stdout);    printf("%08x/%08x: does: %08x\n",(Cell)ip,(Cell)cfa,*(Cell)PFA(cfa));
 #endif  #endif
   *--rp = (Cell)ip;    *--rp = (Cell)ip;
   /* PFA1 might collide with DOES_CODE1 here, so we use PFA */    /* PFA1 might collide with DOES_CODE1 here, so we use PFA */

Removed from v.1.4  
changed lines
  Added in v.1.10

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