Diff for /gforth/engine/threaded.h between versions 1.25 and 1.39

version 1.25, 2003/11/06 09:47:50 version 1.39, 2008/08/09 13:24:25
Line 1 Line 1
 /* This file defines a number of threading schemes.  /* This file defines a number of threading schemes.
   
   Copyright (C) 1995, 1996,1997,1999,2003 Free Software Foundation, Inc.    Copyright (C) 1995, 1996,1997,1999,2003,2004,2005,2007 Free Software Foundation, Inc.
   
   This file is part of Gforth.    This file is part of Gforth.
   
   Gforth is free software; you can redistribute it and/or    Gforth is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License    modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; either version 2    as published by the Free Software Foundation, either version 3
   of the License, or (at your option) any later version.    of the License, or (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,    This program is distributed in the hope that it will be useful,
Line 15 Line 15
   GNU General Public License for more details.    GNU General Public License for more details.
   
   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, see http://www.gnu.org/licenses/.
   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 90
   
 */  */
   
   #if !defined(GCC_PR15242_WORKAROUND)
   #if __GNUC__ == 3
   /* various gcc-3.x version have problems (including PR15242) that are
      solved with this workaround */
   #define GCC_PR15242_WORKAROUND 1
   #else
   /* other gcc versions are better off without the workaround for
      primitives that are not relocatable */
   #define GCC_PR15242_WORKAROUND 0
   #endif
   #endif
   
   #if GCC_PR15242_WORKAROUND
   #define DO_GOTO goto before_goto
   #else
   #define DO_GOTO goto *real_ca
   #endif
   
   #ifndef GOTO_ALIGN
   #define GOTO_ALIGN
   #endif
   
   #define GOTO(target) do {(real_ca=(target));} while(0)
   #define NEXT_P2 do {NEXT_P1_5; DO_GOTO;} while(0)
   #define EXEC(XT) do { real_ca=EXEC1(XT); DO_GOTO;} while (0)
   #define VM_JUMP(target) do {GOTO(target);} while (0)
   #define NEXT do {DEF_CA NEXT_P1; NEXT_P2;} while(0)
   #define FIRST_NEXT_P2 NEXT_P1_5; GOTO_ALIGN; \
   before_goto: goto *real_ca; after_goto:
   #define FIRST_NEXT do {DEF_CA NEXT_P1; FIRST_NEXT_P2;} while(0)
   #define IPTOS NEXT_INST
   
   
 #ifdef DOUBLY_INDIRECT  #ifdef DOUBLY_INDIRECT
 # ifndef DEBUG_DITC  # ifndef DEBUG_DITC
 #  define DEBUG_DITC 0  #  define DEBUG_DITC 0
 # endif  # endif
 /* define to 1 if you want to check consistency */  /* define to 1 if you want to check consistency */
 #  define NEXT_P0       ({cfa1=cfa; cfa=*ip;})  #  define NEXT_P0       do {cfa1=cfa; cfa=*ip;} while(0)
 #  define CFA           cfa1  #  define CFA           cfa1
 #  define MORE_VARS     Xt cfa1;  #  define MORE_VARS     Xt cfa1;
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); cfa=*ip;})  #  define SET_IP(p)     do {ip=(p); cfa=*ip;} while(0)
 #  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)     do {cfa=IP[const_inc]; ip+=(const_inc);} while(0)
 #  define DEF_CA        Label ca;  #  define DEF_CA        Label MAYBE_UNUSED ca;
 #  define NEXT_P1       ({\  #  define NEXT_P1       do {\
   if (DEBUG_DITC && (cfa<=vm_prims+DOESJUMP || cfa>=vm_prims+npriminfos)) \    if (DEBUG_DITC && (cfa<=vm_prims+DOESJUMP || cfa>=vm_prims+npriminfos)) \
     fprintf(stderr,"NEXT encountered prim %p at ip=%p\n", cfa, ip); \      fprintf(stderr,"NEXT encountered prim %p at ip=%p\n", cfa, ip); \
   ip++;})    ip++;} while(0)
 #  define NEXT_P2       ({ca=**cfa; goto *ca;})  #  define NEXT_P1_5     do {ca=**cfa; GOTO(ca);} while(0)
 #  define EXEC(XT)      ({DEF_CA cfa=(XT);\  #  define EXEC1(XT)     ({DEF_CA cfa=(XT);\
   if (DEBUG_DITC && (cfa>vm_prims+DOESJUMP && cfa<vm_prims+npriminfos)) \    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); \      fprintf(stderr,"EXEC encountered xt %p at ip=%p, vm_prims=%p, xts=%p\n", cfa, ip, vm_prims, xts); \
  ca=**cfa; goto *ca;})   ca=**cfa; ca;})
   
 #elif defined(NO_IP)  #elif defined(NO_IP)
   
Line 122 Line 154
 #define INC_IP(n)       ((void)0)  #define INC_IP(n)       ((void)0)
 #define DEF_CA  #define DEF_CA
 #define NEXT_P1  #define NEXT_P1
 #define NEXT_P2         ({goto *next_code;})  #define NEXT_P1_5               do {goto *next_code;} while(0)
 /* set next_code to the return address before performing EXEC */  /* set next_code to the return address before performing EXEC */
 #define EXEC(XT)        ({cfa=(XT); goto **cfa;})  /* original: */
   /* #define EXEC1(XT)    do {cfa=(XT); goto **cfa;} while(0) */
   /* fake, to make syntax check work */
   #define EXEC1(XT)       ({cfa=(XT); *cfa;})
   
 #else  /* !defined(DOUBLY_INDIRECT) && !defined(NO_IP) */  #else  /* !defined(DOUBLY_INDIRECT) && !defined(NO_IP) */
   
Line 151 Line 186
 */  */
 #define KILLS asm("":"=X"(cfa));  #define KILLS asm("":"=X"(cfa));
   
 #ifndef THREADING_SCHEME  /* #warning direct threading scheme 8: cfa dead, i386 hack */
 #define THREADING_SCHEME 7  
 #endif  
   
 #if THREADING_SCHEME==1  
 #warning direct threading scheme 1: autoinc, long latency, cfa live  
 #  define NEXT_P0       ({cfa1=cfa; cfa=*ip++;})  
 #  define CFA           cfa1  
 #  define MORE_VARS     Xt cfa1;  
 #  define IP            (ip-1)  
 #  define SET_IP(p)     ({ip=(p); cfa=*ip++;})  
 #  define NEXT_INST     (cfa)  
 #  define INC_IP(const_inc)     ({cfa=IP[const_inc]; ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1  
 #  define NEXT_P2       ({goto *cfa;})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
 #if THREADING_SCHEME==2  
 #warning direct threading scheme 2: autoinc, long latency, cfa dead  
 #  define NEXT_P0       (ip++)  
 #  define CFA           cfa  
 #  define IP            (ip-1)  
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  
 #  define NEXT_INST     (*(ip-1))  
 #  define INC_IP(const_inc)     ({ ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1  
 #  define NEXT_P2       ({KILLS goto **(ip-1);})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
   
 #if THREADING_SCHEME==3  
 #warning direct threading scheme 3: autoinc, low latency, cfa live  
 #  define NEXT_P0  
 #  define CFA           cfa  
 #  define IP            (ip)  
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  
 #  define NEXT_INST     (*ip)  
 #  define INC_IP(const_inc)     ({ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1       ({cfa=*ip++;})  
 #  define NEXT_P2       ({goto *cfa;})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
 #if THREADING_SCHEME==4  
 #warning direct threading scheme 4: autoinc, low latency, cfa dead  
 #  define NEXT_P0  
 #  define CFA           cfa  
 #  define IP            (ip)  
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  
 #  define NEXT_INST     (*ip)  
 #  define INC_IP(const_inc)     ({ ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1  
 #  define NEXT_P2       ({KILLS goto **(ip++);})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
 #if THREADING_SCHEME==5  
 #warning direct threading scheme 5: long latency, cfa live  
 #  define NEXT_P0       ({cfa1=cfa; cfa=*ip;})  
 #  define CFA           cfa1  
 #  define MORE_VARS     Xt cfa1;  
 #  define IP            (ip)  
 #  define SET_IP(p)     ({ip=(p); cfa=*ip;})  
 #  define NEXT_INST     (cfa)  
 #  define INC_IP(const_inc)     ({cfa=IP[const_inc]; ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1       (ip++)  
 #  define NEXT_P2       ({goto *cfa;})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
 #if THREADING_SCHEME==6  
 #warning direct threading scheme 6: long latency, cfa dead  
 #  define NEXT_P0  
 #  define CFA           cfa  
 #  define IP            (ip)  
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  
 #  define NEXT_INST     (*ip)  
 #  define INC_IP(const_inc)     ({ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1       (ip++)  
 #  define NEXT_P2       ({KILLS goto **(ip-1);})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
   
 #if THREADING_SCHEME==7  
 #warning direct threading scheme 7: low latency, cfa live  
 #  define NEXT_P0  
 #  define CFA           cfa  
 #  define IP            (ip)  
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  
 #  define NEXT_INST     (*ip)  
 #  define INC_IP(const_inc)     ({ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1       ({cfa=*ip++;})  
 #  define NEXT_P2       ({goto *cfa;})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
 #if THREADING_SCHEME==8  
 #warning direct threading scheme 8: cfa dead, i386 hack  
 #  define NEXT_P0  #  define NEXT_P0
 #  define CFA           cfa  #  define CFA           cfa
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     do {ip=(p); NEXT_P0;} while(0)
 #  define NEXT_INST     (*IP)  #  define NEXT_INST     (*IP)
 #  define INC_IP(const_inc)     ({ ip+=(const_inc);})  #  define INC_IP(const_inc)     do { ip+=(const_inc);} while(0)
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1       (ip++)  #  define NEXT_P1       (ip++)
 #  define NEXT_P2       ({KILLS goto **(ip-1);})  #  define NEXT_P1_5     do {KILLS GOTO(*(ip-1));} while(0)
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  #  define EXEC1(XT)     ({cfa=(XT); *cfa;})
 #endif  
   
 #if THREADING_SCHEME==9  
 #warning direct threading scheme 9: Power/PPC hack, long latency  
 /* 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  
    to do some prefetching in between */  
 #  define NEXT_P0  
 #  define CFA           cfa  
 #  define IP            ip  
 #  define SET_IP(p)     ({ip=(p); next_cfa=*ip; NEXT_P0;})  
 #  define NEXT_INST     (next_cfa)  
 #  define INC_IP(const_inc)     ({next_cfa=IP[const_inc]; ip+=(const_inc);})  
 #  define DEF_CA          
 #  define NEXT_P1       ({cfa=next_cfa; ip++; next_cfa=*ip;})  
 #  define NEXT_P2       ({goto *cfa;})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #  define MORE_VARS     Xt next_cfa;  
 #endif  
   
 #if THREADING_SCHEME==10  
 #warning direct threading scheme 10: plain (no attempt at scheduling)  
 #  define NEXT_P0  
 #  define CFA           cfa  
 #  define IP            (ip)  
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  
 #  define NEXT_INST     (*ip)  
 #  define INC_IP(const_inc)     ({ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1  
 #  define NEXT_P2       ({cfa=*ip++; goto *cfa;})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
 /* direct threaded */  /* direct threaded */
 #else  #else
 /* indirect THREADED  */  /* indirect THREADED  */
   
 #ifndef THREADING_SCHEME  /* #warning indirect threading scheme 8: low latency,cisc */
 #define THREADING_SCHEME 6  
 #endif  
   
 #if THREADING_SCHEME==1  
 #warning indirect threading scheme 1: autoinc, long latency, cisc  
 #  define NEXT_P0       ({cfa1=cfa; cfa=*ip++;})  
 #  define CFA           cfa1  
 #  define MORE_VARS     Xt cfa1;  
 #  define IP            (ip-1)  
 #  define SET_IP(p)     ({ip=(p); cfa=*ip++;})  
 #  define NEXT_INST     (cfa)  
 #  define INC_IP(const_inc)     ({cfa=IP[const_inc]; ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1  
 #  define NEXT_P2       ({goto **cfa;})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
 #if THREADING_SCHEME==2  
 #warning indirect threading scheme 2: autoinc, long latency  
 #  define NEXT_P0       ({cfa1=cfa; cfa=*ip++;})  
 #  define CFA           cfa1  
 #  define MORE_VARS     Xt cfa1;  
 #  define IP            (ip-1)  
 #  define SET_IP(p)     ({ip=(p); cfa=*ip++;})  
 #  define NEXT_INST     (cfa)  
 #  define INC_IP(const_inc)     ({cfa=IP[const_inc]; ip+=(const_inc);})  
 #  define DEF_CA        Label ca;  
 #  define NEXT_P1       ({ca=*cfa;})  
 #  define NEXT_P2       ({goto *ca;})  
 #  define EXEC(XT)      ({DEF_CA cfa=(XT); ca=*cfa; goto *ca;})  
 #endif  
   
   
 #if THREADING_SCHEME==3  
 #warning indirect threading scheme 3: autoinc, low latency, cisc  
 #  define NEXT_P0  #  define NEXT_P0
 #  define CFA           cfa  #  define CFA           cfa
 #  define IP            (ip)  #  define IP            (ip)
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  #  define SET_IP(p)     do {ip=(p); NEXT_P0;} while(0)
 #  define NEXT_INST     (*ip)  #  define NEXT_INST     (*ip)
 #  define INC_IP(const_inc)     ({ip+=(const_inc);})  #  define INC_IP(const_inc)     do {ip+=(const_inc);} while(0)
 #  define DEF_CA  #  define DEF_CA
 #  define NEXT_P1  #  define NEXT_P1
 #  define NEXT_P2       ({cfa=*ip++; goto **cfa;})  #  define NEXT_P1_5     do {cfa=*ip++; GOTO(*cfa);} while(0)
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  #  define EXEC1(XT)     ({cfa=(XT); *cfa;})
 #endif  
   
 #if THREADING_SCHEME==4  
 #warning indirect threading scheme 4: autoinc, low latency  
 #  define NEXT_P0       ({cfa1=cfa; cfa=*ip++;})  
 #  define CFA           cfa1  
 #  define MORE_VARS     Xt cfa1;  
 #  define IP            (ip-1)  
 #  define SET_IP(p)     ({ip=(p); cfa=*ip++;})  
 #  define NEXT_INST     (cfa)  
 #  define INC_IP(const_inc)     ({cfa=IP[const_inc]; ip+=(const_inc);})  
 #  define DEF_CA        Label ca;  
 #  define NEXT_P1       ({ca=*cfa;})  
 #  define NEXT_P2       ({goto *ca;})  
 #  define EXEC(XT)      ({DEF_CA cfa=(XT); ca=*cfa; goto *ca;})  
 #endif  
   
   
 #if THREADING_SCHEME==5  
 #warning indirect threading scheme 5: long latency, cisc  
 #  define NEXT_P0       ({cfa1=cfa; cfa=*ip;})  
 #  define CFA           cfa1  
 #  define MORE_VARS     Xt cfa1;  
 #  define IP            (ip)  
 #  define SET_IP(p)     ({ip=(p); cfa=*ip;})  
 #  define NEXT_INST     (cfa)  
 #  define INC_IP(const_inc)     ({cfa=IP[const_inc]; ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1       (ip++)  
 #  define NEXT_P2       ({goto **cfa;})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
 #if THREADING_SCHEME==6  
 #warning indirect threading scheme 6: long latency  
 #  define NEXT_P0       ({cfa1=cfa; cfa=*ip;})  
 #  define CFA           cfa1  
 #  define MORE_VARS     Xt cfa1;  
 #  define IP            (ip)  
 #  define SET_IP(p)     ({ip=(p); cfa=*ip;})  
 #  define NEXT_INST     (cfa)  
 #  define INC_IP(const_inc)     ({cfa=IP[const_inc]; ip+=(const_inc);})  
 #  define DEF_CA        Label ca;  
 #  define NEXT_P1       ({ip++; ca=*cfa;})  
 #  define NEXT_P2       ({goto *ca;})  
 #  define EXEC(XT)      ({DEF_CA cfa=(XT); ca=*cfa; goto *ca;})  
 #endif  
   
 #if THREADING_SCHEME==7  
 #warning indirect threading scheme 7: low latency  
 #  define NEXT_P0       ({cfa1=cfa; cfa=*ip;})  
 #  define CFA           cfa1  
 #  define MORE_VARS     Xt cfa1;  
 #  define IP            (ip)  
 #  define SET_IP(p)     ({ip=(p); cfa=*ip;})  
 #  define NEXT_INST     (cfa)  
 #  define INC_IP(const_inc)     ({cfa=IP[const_inc]; ip+=(const_inc);})  
 #  define DEF_CA        Label ca;  
 #  define NEXT_P1       ({ip++; ca=*cfa;})  
 #  define NEXT_P2       ({goto *ca;})  
 #  define EXEC(XT)      ({DEF_CA cfa=(XT); ca=*cfa; goto *ca;})  
 #endif  
   
 #if THREADING_SCHEME==8  
 #warning indirect threading scheme 8: low latency,cisc  
 #  define NEXT_P0  
 #  define CFA           cfa  
 #  define IP            (ip)  
 #  define SET_IP(p)     ({ip=(p); NEXT_P0;})  
 #  define NEXT_INST     (*ip)  
 #  define INC_IP(const_inc)     ({ip+=(const_inc);})  
 #  define DEF_CA  
 #  define NEXT_P1  
 #  define NEXT_P2       ({cfa=*ip++; goto **cfa;})  
 #  define EXEC(XT)      ({cfa=(XT); goto **cfa;})  
 #endif  
   
 /* indirect threaded */  /* indirect threaded */
 #endif  #endif
   
 #endif /* !defined(DOUBLY_INDIRECT) && !defined(NO_IP) */  #endif /* !defined(DOUBLY_INDIRECT) && !defined(NO_IP) */
   
 #define NEXT ({DEF_CA NEXT_P1; NEXT_P2;})  
 #define IPTOS NEXT_INST  

Removed from v.1.25  
changed lines
  Added in v.1.39


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