Diff for /gforth/engine/threaded.h between versions 1.3 and 1.14

version 1.3, 1999/02/06 22:28:25 version 1.14, 2002/01/16 10:40:26
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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
   
 */  */
   
 #ifndef GETCFA  /* CFA_NEXT: if NEXT uses cfa, you have to #define CFA_NEXT, to get
 #  define CFA_NEXT   * cfa declared in engine.
 /* a more appropriate name would be CFA_LIVE, i.e., cfa is live after NEXT */   */
 #endif  
   
 #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) */
   
Line 117 Line 121
   
 #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 130 Line 135
   
 #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 144 Line 152
   
 #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 166
   
 #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 170 Line 182
   
 #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 183 Line 196
   
 #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 197 Line 213
   
 #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 210 Line 227
   
 #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 226 Line 246
 /* 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;})
Line 257 Line 279
   
 #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 270 Line 293
   
 #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 284 Line 308
   
 #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 297 Line 322
   
 #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 311 Line 337
   
 #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 324 Line 351
   
 #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 337 Line 365
   
 #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 350 Line 379
   
 #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 367 Line 397
 #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

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  Added in v.1.14


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