Diff for /gforth/engine/threaded.h between versions 1.11 and 1.25

version 1.11, 2001/10/26 12:00:16 version 1.25, 2003/11/06 09:47:50
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 /* This file defines a number of threading schemes.  /* This file defines a number of threading schemes.
   
   Copyright (C) 1995, 1996,1997,1999 Free Software Foundation, Inc.    Copyright (C) 1995, 1996,1997,1999,2003 Free Software Foundation, Inc.
   
   This file is part of Gforth.    This file is part of Gforth.
   
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  # ifndef DEBUG_DITC
 #  define NEXT_P0       ({cfa=*ip;})  #  define DEBUG_DITC 0
   # endif
   /* define to 1 if you want to check consistency */
   #  define NEXT_P0       ({cfa1=cfa; cfa=*ip;})
   #  define CFA           cfa1
   #  define MORE_VARS     Xt cfa1;
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); cfa=*ip;})
 #  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       ({\
 #  define NEXT_P2       ({goto *ca;})    if (DEBUG_DITC && (cfa<=vm_prims+DOESJUMP || cfa>=vm_prims+npriminfos)) \
 #  define EXEC(XT)      ({DEF_CA cfa=(XT); ca=**cfa; goto *ca;})      fprintf(stderr,"NEXT encountered prim %p at ip=%p\n", cfa, ip); \
 #  define NEXT1_P1 ({ca = **cfa;})    ip++;})
 #  define NEXT1_P2 ({goto *ca;})  #  define NEXT_P2       ({ca=**cfa; goto *ca;})
   #  define EXEC(XT)      ({DEF_CA cfa=(XT);\
     if (DEBUG_DITC && (cfa>vm_prims+DOESJUMP && cfa<vm_prims+npriminfos)) \
       fprintf(stderr,"EXEC encountered xt %p at ip=%p, vm_prims=%p, xts=%p\n", cfa, ip, vm_prims, xts); \
    ca=**cfa; goto *ca;})
   
   #elif defined(NO_IP)
   
   #define NEXT_P0
   #  define CFA           cfa
   #define SET_IP(target)  assert(0)
   #define INC_IP(n)       ((void)0)
   #define DEF_CA
   #define NEXT_P1
   #define NEXT_P2         ({goto *next_code;})
   /* set next_code to the return address before performing EXEC */
   #define EXEC(XT)        ({cfa=(XT); goto **cfa;})
   
 #else /* !defined(DOUBLY_INDIRECT) */  #else  /* !defined(DOUBLY_INDIRECT) && !defined(NO_IP) */
   
 #if defined(DIRECT_THREADED)  #if defined(DIRECT_THREADED)
   
 /* note that the "cfa dead" versions only work if GETCFA exists and works */  /* This lets the compiler know that cfa is dead before; we place it at
      "goto *"s that perform direct threaded dispatch (i.e., not EXECUTE
      etc.), and thus do not reach doers, which would use cfa; the only
      way to a doer is through EXECUTE etc., which set the cfa
      themselves.
   
      Some of these direct threaded schemes use "cfa" to hold the code
      address in normal direct threaded code.  Of course we cannot use
      KILLS there.
   
      KILLS works by having an empty asm instruction, and claiming to the
      compiler that it writes to cfa.
   
      KILLS is optional.  You can write
   
   #define KILLS
   
      and lose just a little performance.
   */
   #define KILLS asm("":"=X"(cfa));
   
   #ifndef THREADING_SCHEME
   #define THREADING_SCHEME 7
   #endif
   
 #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       ({cfa1=cfa; cfa=*ip++;})
 #  define NEXT_P0       ({cfa=*ip++;})  #  define CFA           cfa1
   #  define MORE_VARS     Xt cfa1;
 #  define IP            (ip-1)  #  define IP            (ip-1)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); cfa=*ip++;})
 #  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  #  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 CFA           cfa
 #  define IP            (ip-1)  #  define IP            (ip-1)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); NEXT_P0;})
 #  define NEXT_INST     (*(ip-1))  #  define NEXT_INST     (*(ip-1))
 #  define INC_IP(const_inc)     ({ ip+=(const_inc);})  #  define INC_IP(const_inc)     ({ ip+=(const_inc);})
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1  #  define NEXT_P1
 #  define NEXT_P2       ({goto **(ip-1);})  #  define NEXT_P2       ({KILLS 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 CFA           cfa
 #  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     (*ip)  #  define NEXT_INST     (*ip)
Line 157 Line 196
 #  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 CFA           cfa
 #  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     (*ip)  #  define NEXT_INST     (*ip)
 #  define INC_IP(const_inc)     ({ ip+=(const_inc);})  #  define INC_IP(const_inc)     ({ ip+=(const_inc);})
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1  #  define NEXT_P1
 #  define NEXT_P2       ({goto **(ip++);})  #  define NEXT_P2       ({KILLS 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       ({cfa1=cfa; cfa=*ip;})
 #  define NEXT_P0       ({cfa=*ip;})  #  define CFA           cfa1
   #  define MORE_VARS     Xt cfa1;
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); cfa=*ip;})
 #  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  #  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 CFA           cfa
 #  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     (*ip)  #  define NEXT_INST     (*ip)
 #  define INC_IP(const_inc)     ({ip+=(const_inc);})  #  define INC_IP(const_inc)     ({ip+=(const_inc);})
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1       (ip++)  #  define NEXT_P1       (ip++)
 #  define NEXT_P2       ({goto **(ip-1);})  #  define NEXT_P2       ({KILLS 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 CFA           cfa
 #  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     (*ip)  #  define NEXT_INST     (*ip)
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 #  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 CFA           cfa
 #  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     (*IP)  #  define NEXT_INST     (*IP)
 #  define INC_IP(const_inc)     ({ ip+=(const_inc);})  #  define INC_IP(const_inc)     ({ ip+=(const_inc);})
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1       (ip++)  #  define NEXT_P1       (ip++)
 #  define NEXT_P2       ({goto **(ip-1);})  #  define NEXT_P2       ({KILLS 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
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 /* 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 CFA           cfa
 #  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)
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 #  define DEF_CA          #  define DEF_CA        
 #  define NEXT_P1       ({cfa=next_cfa; ip++; next_cfa=*ip;})  #  define NEXT_P1       ({cfa=next_cfa; ip++; next_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;})
 #  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 CFA           cfa
 #  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     (*ip)  #  define NEXT_INST     (*ip)
Line 266 Line 300
 #  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 */
 #else  #else
 /* indirect THREADED  */  /* indirect THREADED  */
   
   #ifndef THREADING_SCHEME
   #define THREADING_SCHEME 6
   #endif
   
 #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       ({cfa1=cfa; cfa=*ip++;})
 #  define NEXT_P0       ({cfa=*ip++;})  #  define CFA           cfa1
   #  define MORE_VARS     Xt cfa1;
 #  define IP            (ip-1)  #  define IP            (ip-1)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); cfa=*ip++;})
 #  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  #  define DEF_CA
Line 289 Line 328
   
 #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       ({cfa1=cfa; cfa=*ip++;})
 #  define NEXT_P0       ({cfa=*ip++;})  #  define CFA           cfa1
   #  define MORE_VARS     Xt cfa1;
 #  define IP            (ip-1)  #  define IP            (ip-1)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); cfa=*ip++;})
 #  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;
Line 304 Line 344
   
 #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 CFA           cfa
 #  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     (*ip)  #  define NEXT_INST     (*ip)
Line 318 Line 358
   
 #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       ({cfa1=cfa; cfa=*ip++;})
 #  define NEXT_P0       ({cfa=*ip++;})  #  define CFA           cfa1
   #  define MORE_VARS     Xt cfa1;
 #  define IP            (ip-1)  #  define IP            (ip-1)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); cfa=*ip++;})
 #  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;
Line 333 Line 374
   
 #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       ({cfa1=cfa; cfa=*ip;})
 #  define NEXT_P0       ({cfa=*ip;})  #  define CFA           cfa1
   #  define MORE_VARS     Xt cfa1;
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); cfa=*ip;})
 #  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  #  define DEF_CA
Line 347 Line 389
   
 #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       ({cfa1=cfa; cfa=*ip;})
 #  define NEXT_P0       ({cfa=*ip;})  #  define CFA           cfa1
   #  define MORE_VARS     Xt cfa1;
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); cfa=*ip;})
 #  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;
Line 361 Line 404
   
 #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       ({cfa1=cfa; cfa=*ip;})
 #  define NEXT_P0       ({cfa=*ip;})  #  define CFA           cfa1
   #  define MORE_VARS     Xt cfa1;
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     ({ip=(p); cfa=*ip;})
 #  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;
Line 375 Line 419
   
 #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 CFA           cfa
 #  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     (*ip)  #  define NEXT_INST     (*ip)
Line 390 Line 434
 /* indirect threaded */  /* indirect threaded */
 #endif  #endif
   
 #endif /* !defined(DOUBLY_INDIRECT) */  #endif /* !defined(DOUBLY_INDIRECT) && !defined(NO_IP) */
   
 #define NEXT ({DEF_CA NEXT_P1; NEXT_P2;})  #define NEXT ({DEF_CA NEXT_P1; NEXT_P2;})
 #define IPTOS NEXT_INST  #define IPTOS NEXT_INST
 #define CASE  

Removed from v.1.11  
changed lines
  Added in v.1.25


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