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Diff for /gforth/engine/engine.c between versions 1.60 and 1.65

version 1.60, 2003/01/27 18:59:42 version 1.65, 2003/08/20 09:23:46
Line 1 Line 1
 /* Gforth virtual machine (aka inner interpreter)  /* Gforth virtual machine (aka inner interpreter)
   
   Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.    Copyright (C) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc.
   
   This file is part of Gforth.    This file is part of Gforth.
   
Line 59 Line 59
 #include <dl.h>  #include <dl.h>
 #endif  #endif
   
   #ifdef HAS_FFCALL
   #include <avcall.h>
   #include <callback.h>
   #endif
   
 #ifndef SEEK_SET  #ifndef SEEK_SET
 /* should be defined in stdio.h, but some systems don't have it */  /* should be defined in stdio.h, but some systems don't have it */
 #define SEEK_SET 0  #define SEEK_SET 0
Line 156  extern int gforth_memcmp(const char * s1 Line 161  extern int gforth_memcmp(const char * s1
 # define CPU_DEP1 0  # define CPU_DEP1 0
 #endif  #endif
   
 /* instructions containing these must be the last instruction of a  /* instructions containing SUPER_END must be the last instruction of a
    super-instruction (e.g., branches, EXECUTE, and other instructions     super-instruction (e.g., branches, EXECUTE, and other instructions
    ending the basic block). Instructions containing SET_IP get this     ending the basic block). Instructions containing SET_IP get this
    automatically, so you usually don't have to write it.  If you have     automatically, so you usually don't have to write it.  If you have
Line 184  extern int gforth_memcmp(const char * s1 Line 189  extern int gforth_memcmp(const char * s1
       }        }
 #endif  #endif
   
   #ifdef HAS_FFCALL
   #define SAVE_REGS IF_spTOS(sp[0]=spTOS); IF_fpTOS(fp[0]=fpTOS); SP=sp; FP=fp; RP=rp; LP=lp;
   #define REST_REGS sp=SP; fp=FP; rp=RP; lp=LP; IF_spTOS(spTOS=sp[0]); IF_fpTOS(fpTOS=fp[0]);
   #endif
   
 #if !defined(ENGINE)  #if !defined(ENGINE)
 /* normal engine */  /* normal engine */
 #define VARIANT(v)      (v)  #define VARIANT(v)      (v)
Line 212  extern int gforth_memcmp(const char * s1 Line 222  extern int gforth_memcmp(const char * s1
   
 #define LABEL2(name) K_##name:  #define LABEL2(name) K_##name:
   
   
 Label *engine(Xt *ip0, Cell *sp0, Cell *rp0, Float *fp0, Address lp0)  Label *engine(Xt *ip0, Cell *sp0, Cell *rp0, Float *fp0, Address lp0)
 /* 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
Line 231  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 240  Label *engine(Xt *ip0, Cell *sp0, Cell *
 #ifdef MORE_VARS  #ifdef MORE_VARS
   MORE_VARS    MORE_VARS
 #endif  #endif
   #ifdef HAS_FFCALL
     av_alist alist;
     extern va_alist clist;
     float frv;
     int irv;
     double drv;
     long long llrv;
     void * prv;
   #endif
   register Address up UPREG = UP;    register Address up UPREG = UP;
   IF_spTOS(register Cell spTOS TOSREG;)    IF_spTOS(register Cell spTOS TOSREG;)
   IF_fpTOS(register Float fpTOS FTOSREG;)    IF_fpTOS(register Float fpTOS FTOSREG;)
Line 242  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 260  Label *engine(Xt *ip0, Cell *sp0, Cell *
   static Label symbols[]= {    static Label symbols[]= {
 #define MAX_SYMBOLS (sizeof(symbols)/sizeof(symbols[0]))  #define MAX_SYMBOLS (sizeof(symbols)/sizeof(symbols[0]))
 #endif /* !defined(DOUBLY_INDIRECT) */  #endif /* !defined(DOUBLY_INDIRECT) */
     (Label)&&docol,  
     (Label)&&docon,  
     (Label)&&dovar,  
     (Label)&&douser,  
     (Label)&&dodefer,  
     (Label)&&dofield,  
     (Label)&&dodoes,  
     /* the following entry is normally unused;  
        it is there because its index indicates a does-handler */  
     CPU_DEP1,  
 #define INST_ADDR(name) ((Label)&&I_##name)  #define INST_ADDR(name) ((Label)&&I_##name)
 #include "prim_lab.i"  #include "prim_lab.i"
 #undef INST_ADDR  #undef INST_ADDR
     (Label)&&after_last,  
     (Label)0,      (Label)0,
 #define INST_ADDR(name) ((Label)&&K_##name)  #define INST_ADDR(name) ((Label)&&K_##name)
 #include "prim_lab.i"  #include "prim_lab.i"
Line 263  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 270  Label *engine(Xt *ip0, Cell *sp0, Cell *
 #define INST_ADDR(name) ((Label)&&J_##name)  #define INST_ADDR(name) ((Label)&&J_##name)
 #include "prim_lab.i"  #include "prim_lab.i"
 #undef INST_ADDR  #undef INST_ADDR
       (Label)&&after_last
   };    };
 #ifdef CPU_DEP2  #ifdef CPU_DEP2
   CPU_DEP2    CPU_DEP2
Line 312  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 320  Label *engine(Xt *ip0, Cell *sp0, Cell *
 #ifdef CPU_DEP3  #ifdef CPU_DEP3
   CPU_DEP3    CPU_DEP3
 #endif  #endif
     
  docol:  
   {  
 #ifdef NO_IP  
     *--rp = next_code;  
     goto **(Label *)PFA1(cfa);  
 #else  
 #ifdef DEBUG  
     {  
       CFA_TO_NAME(cfa);  
       fprintf(stderr,"%08lx: col: %08lx %.*s\n",(Cell)ip,(Cell)PFA1(cfa),  
               len,name);  
     }  
 #endif  
 #ifdef CISC_NEXT  
     /* this is the simple version */  
     *--rp = (Cell)ip;  
     SET_IP((Xt *)PFA1(cfa));  
     SUPER_END;  
     NEXT;  
 #else  
     /* this one is important, so we help the compiler optimizing */  
     {  
       DEF_CA  
       rp[-1] = (Cell)ip;  
       SET_IP((Xt *)PFA1(cfa));  
       SUPER_END;  
       NEXT_P1;  
       rp--;  
       NEXT_P2;  
     }  
 #endif  
 #endif  
   }  
   
  docon:  
   {  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx: con: %08lx\n",(Cell)ip,*(Cell*)PFA1(cfa));  
 #endif  
 #ifdef USE_TOS  
     *sp-- = spTOS;  
     spTOS = *(Cell *)PFA1(cfa);  
 #else  
     *--sp = *(Cell *)PFA1(cfa);  
 #endif  
   }  
 #ifdef NO_IP  
   goto *next_code;  
 #else  
   NEXT_P0;  
   NEXT;  
 #endif  
     
  dovar:  
   {  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx: var: %08lx\n",(Cell)ip,(Cell)PFA1(cfa));  
 #endif  
 #ifdef USE_TOS  
     *sp-- = spTOS;  
     spTOS = (Cell)PFA1(cfa);  
 #else  
     *--sp = (Cell)PFA1(cfa);  
 #endif  
   }  
 #ifdef NO_IP  
   goto *next_code;  
 #else  
   NEXT_P0;  
   NEXT;  
 #endif  
     
  douser:  
   {  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx: user: %08lx\n",(Cell)ip,(Cell)PFA1(cfa));  
 #endif  
 #ifdef USE_TOS  
     *sp-- = spTOS;  
     spTOS = (Cell)(up+*(Cell*)PFA1(cfa));  
 #else  
     *--sp = (Cell)(up+*(Cell*)PFA1(cfa));  
 #endif  
   }  
 #ifdef NO_IP  
   goto *next_code;  
 #else  
   NEXT_P0;  
   NEXT;  
 #endif  
     
  dodefer:  
   {  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx: defer: %08lx\n",(Cell)ip,*(Cell*)PFA1(cfa));  
 #endif  
     SUPER_END;  
     EXEC(*(Xt *)PFA1(cfa));  
   }  
   
  dofield:  
   {  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx: field: %08lx\n",(Cell)ip,(Cell)PFA1(cfa));  
 #endif  
     spTOS += *(Cell*)PFA1(cfa);  
   }  
 #ifdef NO_IP  
   goto *next_code;  
 #else  
   NEXT_P0;  
   NEXT;  
 #endif  
   
  dodoes:  
   /* this assumes the following structure:  
      defining-word:  
        
      ...  
      DOES>  
      (possible padding)  
      possibly handler: jmp dodoes  
      (possible branch delay slot(s))  
      Forth code after DOES>  
        
      defined word:  
        
      cfa: address of or jump to handler OR  
           address of or jump to dodoes, address of DOES-code  
      pfa:  
        
      */  
 #ifdef NO_IP  
   *--rp = next_code;  
   IF_spTOS(spTOS = sp[0]);  
   sp--;  
   spTOS = (Cell)PFA(cfa);  
   goto **(Label *)DOES_CODE1(cfa);  
 #else  
   {  
     /*    fprintf(stderr, "Got CFA %08lx at doescode %08lx/%08lx: does: %08lx\n",cfa,(Cell)ip,(Cell)PFA(cfa),(Cell)DOES_CODE1(cfa));*/  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx/%08lx: does: %08lx\n",(Cell)ip,(Cell)PFA(cfa),(Cell)DOES_CODE1(cfa));  
     fflush(stderr);  
 #endif  
     *--rp = (Cell)ip;  
     /* PFA1 might collide with DOES_CODE1 here, so we use PFA */  
 #ifdef USE_TOS  
     *sp-- = spTOS;  
     spTOS = (Cell)PFA(cfa);  
 #else  
     *--sp = (Cell)PFA(cfa);  
 #endif  
     SET_IP(DOES_CODE1(cfa));  
     SUPER_END;  
     /*    fprintf(stderr,"TOS = %08lx, IP=%08lx\n", spTOS, IP);*/  
   }  
   NEXT;  
 #endif  
   
 #include "prim.i"  #include "prim.i"
   after_last: return (Label *)0;    after_last: return (Label *)0;
Removed from v.1.60  
changed lines
  Added in v.1.65

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