Diff for /gforth/engine/threaded.h between versions 1.5 and 1.15

version 1.5, 1999/05/14 20:55:14 version 1.15, 2002/01/20 19:04:11
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 /* This file defines a number of threading schemes.  /* This file defines a number of threading schemes.
   
   Copyright (C) 1995, 1996,1997 Free Software Foundation, Inc.    Copyright (C) 1995, 1996,1997,1999 Free Software Foundation, Inc.
   
   This file is part of Gforth.    This file is part of Gforth.
   
Line 16 Line 16
   
   You should have received a copy of the GNU General Public License    You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software    along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   
   
   This files defines macros for threading. Many sets of macros are    This files defines macros for threading. Many sets of macros are
Line 91 Line 91
   
 */  */
   
 /* CFA_NEXT: if NEXT uses cfa, you have to #define CFA_NEXT, to get  
  * cfa declared in engine.  
  */  
   
 #ifdef DOUBLY_INDIRECT  #ifdef DOUBLY_INDIRECT
 #  define CFA_NEXT  
 #  define NEXT_P0       ({cfa=*ip;})  #  define NEXT_P0       ({cfa=*ip;})
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
 #  define NEXT_INST     (cfa)  #  define NEXT_INST     (cfa)
 #  define INC_IP(const_inc)     ({cfa=IP[const_inc]; ip+=(const_inc);})  #  define INC_IP(const_inc)     ({cfa=IP[const_inc]; ip+=(const_inc);})
 #  define DEF_CA        Label ca;  #  define DEF_CA        Label ca;
 #  define NEXT_P1       ({ip++; ca=**cfa;})  #  define NEXT_P1       ({\
     if (cfa<=vm_prims+DOESJUMP || cfa>=vm_prims+npriminfos) \
       fprintf(stderr,"NEXT encountered prim %p at ip=%p\n", cfa, ip); \
     ip++; ca=**cfa;})
 #  define NEXT_P2       ({goto *ca;})  #  define NEXT_P2       ({goto *ca;})
 #  define EXEC(XT)      ({DEF_CA cfa=(XT); ca=**cfa; goto *ca;})  #  define EXEC(XT)      ({DEF_CA cfa=(XT);\
 #  define NEXT1_P1 ({ca = **cfa;})    if (cfa>vm_prims+DOESJUMP && cfa<vm_prims+npriminfos) \
 #  define NEXT1_P2 ({goto *ca;})      fprintf(stderr,"EXEC encountered xt %p at ip=%p, vm_prims=%p, xts=%p\n", cfa, ip, vm_prims, xts); \
    ca=**cfa; goto *ca;})
   
 #else /* !defined(DOUBLY_INDIRECT) */  #else /* !defined(DOUBLY_INDIRECT) */
   
 #if defined(DIRECT_THREADED)  #if defined(DIRECT_THREADED)
   
 /* note that the "cfa dead" versions only work if GETCFA exists and works */  
   
 #if THREADING_SCHEME==1  #if THREADING_SCHEME==1
 #warning direct threading scheme 1: autoinc, long latency, cfa live  #warning direct threading scheme 1: autoinc, long latency, cfa live
 #  define CFA_NEXT  
 #  define NEXT_P0       ({cfa=*ip++;})  #  define NEXT_P0       ({cfa=*ip++;})
 #  define IP            (ip-1)  #  define IP            (ip-1)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 126 Line 122
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1  #  define NEXT_P1
 #  define NEXT_P2       ({goto *cfa;})  #  define NEXT_P2       ({goto *cfa;})
 #  define EXEC(XT)      ({cfa=(XT); goto *cfa;})  #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})
 #endif  #endif
   
 #if THREADING_SCHEME==2  #if THREADING_SCHEME==2
 #warning direct threading scheme 2: autoinc, long latency, cfa dead  #warning direct threading scheme 2: autoinc, long latency, cfa dead
 #ifndef GETCFA  
 #error GETCFA must be defined for cfa dead threading  
 #endif  
 #  define NEXT_P0       (ip++)  #  define NEXT_P0       (ip++)
 #  define IP            (ip-1)  #  define IP            (ip-1)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 142 Line 135
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1  #  define NEXT_P1
 #  define NEXT_P2       ({goto **(ip-1);})  #  define NEXT_P2       ({goto **(ip-1);})
 #  define EXEC(XT)      ({goto *(XT);})  #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})
 #endif  #endif
   
   
 #if THREADING_SCHEME==3  #if THREADING_SCHEME==3
 #warning direct threading scheme 3: autoinc, low latency, cfa live  #warning direct threading scheme 3: autoinc, low latency, cfa live
 #  define CFA_NEXT  
 #  define NEXT_P0  #  define NEXT_P0
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 157 Line 149
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1       ({cfa=*ip++;})  #  define NEXT_P1       ({cfa=*ip++;})
 #  define NEXT_P2       ({goto *cfa;})  #  define NEXT_P2       ({goto *cfa;})
 #  define EXEC(XT)      ({cfa=(XT); goto *cfa;})  #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})
 #endif  #endif
   
 #if THREADING_SCHEME==4  #if THREADING_SCHEME==4
 #warning direct threading scheme 4: autoinc, low latency, cfa dead  #warning direct threading scheme 4: autoinc, low latency, cfa dead
 #ifndef GETCFA  
 #error GETCFA must be defined for cfa dead threading  
 #endif  
 #  define NEXT_P0  #  define NEXT_P0
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 173 Line 162
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1  #  define NEXT_P1
 #  define NEXT_P2       ({goto **(ip++);})  #  define NEXT_P2       ({goto **(ip++);})
 #  define EXEC(XT)      ({goto *(XT);})  #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})
 #endif  #endif
   
 #if THREADING_SCHEME==5  #if THREADING_SCHEME==5
 #warning direct threading scheme 5: long latency, cfa live  #warning direct threading scheme 5: long latency, cfa live
 #  define CFA_NEXT  
 #  define NEXT_P0       ({cfa=*ip;})  #  define NEXT_P0       ({cfa=*ip;})
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 187 Line 175
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1       (ip++)  #  define NEXT_P1       (ip++)
 #  define NEXT_P2       ({goto *cfa;})  #  define NEXT_P2       ({goto *cfa;})
 #  define EXEC(XT)      ({cfa=(XT); goto *cfa;})  #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})
 #endif  #endif
   
 #if THREADING_SCHEME==6  #if THREADING_SCHEME==6
 #warning direct threading scheme 6: long latency, cfa dead  #warning direct threading scheme 6: long latency, cfa dead
 #ifndef GETCFA  
 #error GETCFA must be defined for cfa dead threading  
 #endif  
 #  define NEXT_P0  #  define NEXT_P0
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 203 Line 188
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1       (ip++)  #  define NEXT_P1       (ip++)
 #  define NEXT_P2       ({goto **(ip-1);})  #  define NEXT_P2       ({goto **(ip-1);})
 #  define EXEC(XT)      ({goto *(XT);})  #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})
 #endif  #endif
   
   
 #if THREADING_SCHEME==7  #if THREADING_SCHEME==7
 #warning direct threading scheme 7: low latency, cfa live  #warning direct threading scheme 7: low latency, cfa live
 #  define CFA_NEXT  
 #  define NEXT_P0  #  define NEXT_P0
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 218 Line 202
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1       ({cfa=*ip++;})  #  define NEXT_P1       ({cfa=*ip++;})
 #  define NEXT_P2       ({goto *cfa;})  #  define NEXT_P2       ({goto *cfa;})
 #  define EXEC(XT)      ({cfa=(XT); goto *cfa;})  #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})
 #endif  #endif
   
 #if THREADING_SCHEME==8  #if THREADING_SCHEME==8
 #warning direct threading scheme 8: cfa dead, i386 hack  #warning direct threading scheme 8: cfa dead, i386 hack
 #ifndef GETCFA  
 #error GETCFA must be defined for cfa dead threading  
 #endif  
 #  define NEXT_P0  #  define NEXT_P0
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 234 Line 215
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1       (ip++)  #  define NEXT_P1       (ip++)
 #  define NEXT_P2       ({goto **(ip-1);})  #  define NEXT_P2       ({goto **(ip-1);})
 #  define EXEC(XT)      ({goto *(XT);})  #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})
 #endif  #endif
   
 #if THREADING_SCHEME==9  #if THREADING_SCHEME==9
Line 242 Line 223
 /* Power uses a prepare-to-branch instruction, and the latency between  /* Power uses a prepare-to-branch instruction, and the latency between
    this inst and the branch is 5 cycles on a PPC604; so we utilize this     this inst and the branch is 5 cycles on a PPC604; so we utilize this
    to do some prefetching in between */     to do some prefetching in between */
 #  define CFA_NEXT  
 #  define NEXT_P0  #  define NEXT_P0
 #  define IP            ip  #  define IP            ip
 #  define SET_IP(p)     ({ip=(p); next_cfa=*ip; NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); next_cfa=*ip; NEXT_P0;})
 #  define NEXT_INST     (next_cfa)  #  define NEXT_INST     (next_cfa)
 #  define INC_IP(const_inc)     ({next_cfa=IP[const_inc]; ip+=(const_inc);})  #  define INC_IP(const_inc)     ({next_cfa=IP[const_inc]; ip+=(const_inc);})
 #  define DEF_CA        Label ca;  #  define DEF_CA        
 #  define NEXT_P1       ({ca=next_cfa; cfa=next_cfa; ip++; next_cfa=*ip;})  #  define NEXT_P1       ({cfa=next_cfa; ip++; next_cfa=*ip;})
 #  define NEXT_P2       ({goto *ca;})  #  define NEXT_P2       ({goto *cfa;})
 #  define EXEC(XT)      ({cfa=(XT); goto *cfa;})  #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})
 #  define MORE_VARS     Xt next_cfa;  #  define MORE_VARS     Xt next_cfa;
 #endif  #endif
   
 #if THREADING_SCHEME==10  #if THREADING_SCHEME==10
 #warning direct threading scheme 10: plain (no attempt at scheduling)  #warning direct threading scheme 10: plain (no attempt at scheduling)
 #  define CFA_NEXT  
 #  define NEXT_P0  #  define NEXT_P0
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
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 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1  #  define NEXT_P1
 #  define NEXT_P2       ({cfa=*ip++; goto *cfa;})  #  define NEXT_P2       ({cfa=*ip++; goto *cfa;})
 #  define EXEC(XT)      ({cfa=(XT); goto *cfa;})  #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})
 #endif  #endif
   
 /* direct threaded */  /* direct threaded */
Line 275 Line 254
   
 #if THREADING_SCHEME==1  #if THREADING_SCHEME==1
 #warning indirect threading scheme 1: autoinc, long latency, cisc  #warning indirect threading scheme 1: autoinc, long latency, cisc
 #  define CFA_NEXT  
 #  define NEXT_P0       ({cfa=*ip++;})  #  define NEXT_P0       ({cfa=*ip++;})
 #  define IP            (ip-1)  #  define IP            (ip-1)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 289 Line 267
   
 #if THREADING_SCHEME==2  #if THREADING_SCHEME==2
 #warning indirect threading scheme 2: autoinc, long latency  #warning indirect threading scheme 2: autoinc, long latency
 #  define CFA_NEXT  
 #  define NEXT_P0       ({cfa=*ip++;})  #  define NEXT_P0       ({cfa=*ip++;})
 #  define IP            (ip-1)  #  define IP            (ip-1)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 304 Line 281
   
 #if THREADING_SCHEME==3  #if THREADING_SCHEME==3
 #warning indirect threading scheme 3: autoinc, low latency, cisc  #warning indirect threading scheme 3: autoinc, low latency, cisc
 #  define CFA_NEXT  
 #  define NEXT_P0  #  define NEXT_P0
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 318 Line 294
   
 #if THREADING_SCHEME==4  #if THREADING_SCHEME==4
 #warning indirect threading scheme 4: autoinc, low latency  #warning indirect threading scheme 4: autoinc, low latency
 #  define CFA_NEXT  
 #  define NEXT_P0       ({cfa=*ip++;})  #  define NEXT_P0       ({cfa=*ip++;})
 #  define IP            (ip-1)  #  define IP            (ip-1)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 333 Line 308
   
 #if THREADING_SCHEME==5  #if THREADING_SCHEME==5
 #warning indirect threading scheme 5: long latency, cisc  #warning indirect threading scheme 5: long latency, cisc
 #  define CFA_NEXT  
 #  define NEXT_P0       ({cfa=*ip;})  #  define NEXT_P0       ({cfa=*ip;})
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 347 Line 321
   
 #if THREADING_SCHEME==6  #if THREADING_SCHEME==6
 #warning indirect threading scheme 6: long latency  #warning indirect threading scheme 6: long latency
 #  define CFA_NEXT  
 #  define NEXT_P0       ({cfa=*ip;})  #  define NEXT_P0       ({cfa=*ip;})
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 361 Line 334
   
 #if THREADING_SCHEME==7  #if THREADING_SCHEME==7
 #warning indirect threading scheme 7: low latency  #warning indirect threading scheme 7: low latency
 #  define CFA_NEXT  
 #  define NEXT_P0       ({cfa=*ip;})  #  define NEXT_P0       ({cfa=*ip;})
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 375 Line 347
   
 #if THREADING_SCHEME==8  #if THREADING_SCHEME==8
 #warning indirect threading scheme 8: low latency,cisc  #warning indirect threading scheme 8: low latency,cisc
 #  define CFA_NEXT  
 #  define NEXT_P0  #  define NEXT_P0
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
Line 393 Line 364
 #endif /* !defined(DOUBLY_INDIRECT) */  #endif /* !defined(DOUBLY_INDIRECT) */
   
 #define NEXT ({DEF_CA NEXT_P1; NEXT_P2;})  #define NEXT ({DEF_CA NEXT_P1; NEXT_P2;})
   #define IPTOS NEXT_INST

Removed from v.1.5  
changed lines
  Added in v.1.15


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