Diff for /gforth/engine/engine.c between versions 1.10 and 1.92

version 1.10, 1999/01/08 16:58:31 version 1.92, 2006/10/22 16:54:01
Line 1 Line 1
 /* Gforth virtual machine (aka inner interpreter)  /* Gforth virtual machine (aka inner interpreter)
   
   Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.    Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005 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.
 */  */
   
   #if defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)
   #define USE_NO_TOS
   #else
   #define USE_TOS
   #endif
   #define USE_NO_FTOS
   
 #include "config.h"  #include "config.h"
   #include "forth.h"
 #include <ctype.h>  #include <ctype.h>
 #include <stdio.h>  #include <stdio.h>
 #include <string.h>  #include <string.h>
Line 27 Line 35
 #include <assert.h>  #include <assert.h>
 #include <stdlib.h>  #include <stdlib.h>
 #include <errno.h>  #include <errno.h>
 #include "forth.h"  
 #include "io.h"  #include "io.h"
 #include "threaded.h"  #include "threaded.h"
 #ifndef STANDALONE  #ifndef STANDALONE
Line 38 Line 45
 #include <sys/time.h>  #include <sys/time.h>
 #include <unistd.h>  #include <unistd.h>
 #include <pwd.h>  #include <pwd.h>
   #include <dirent.h>
   #include <wchar.h>
   #include <sys/resource.h>
   #ifdef HAVE_FNMATCH_H
   #include <fnmatch.h>
   #else
   #include "fnmatch.h"
   #endif
 #else  #else
 #include "systypes.h"  #include "systypes.h"
 #endif  #endif
Line 52 Line 67
 #include <dl.h>  #include <dl.h>
 #endif  #endif
   
   #ifdef HAS_FFCALL
   #include <avcall.h>
   #include <callback.h>
   #endif
   
   #ifdef HAS_LIBFFI
   #include <ffi.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
 #endif  #endif
   
 #define IOR(flag)       ((flag)? -512-errno : 0)  #ifndef HAVE_FSEEKO
   #define fseeko fseek
 struct F83Name {  
   struct F83Name *next;  /* the link field for old hands */  
   char          countetc;  
   char          name[0];  
 };  
   
 /* are macros for setting necessary? */  
 #define F83NAME_COUNT(np)       ((np)->countetc & 0x1f)  
 #define F83NAME_SMUDGE(np)      (((np)->countetc & 0x40) != 0)  
 #define F83NAME_IMMEDIATE(np)   (((np)->countetc & 0x20) != 0)  
   
 Cell *SP;  
 Float *FP;  
 Address UP=NULL;  
   
 #if 0  
 /* not used currently */  
 int emitcounter;  
 #endif  #endif
 #define NULLC '\0'  
   
 #ifdef HAS_FILE  #ifndef HAVE_FTELLO
 char *cstr(Char *from, UCell size, int clear)  #define ftello ftell
 /* return a C-string corresponding to the Forth string ( FROM SIZE ).  
    the C-string lives until the next call of cstr with CLEAR being true */  
 {  
   static struct cstr_buffer {  
     char *buffer;  
     size_t size;  
   } *buffers=NULL;  
   static int nbuffers=0;  
   static int used=0;  
   struct cstr_buffer *b;  
   
   if (buffers==NULL)  
     buffers=malloc(0);  
   if (clear)  
     used=0;  
   if (used>=nbuffers) {  
     buffers=realloc(buffers,sizeof(struct cstr_buffer)*(used+1));  
     buffers[used]=(struct cstr_buffer){malloc(0),0};  
     nbuffers=used+1;  
   }  
   b=&buffers[used];  
   if (size+1 > b->size) {  
     b->buffer = realloc(b->buffer,size+1);  
     b->size = size+1;  
   }  
   memcpy(b->buffer,from,size);  
   b->buffer[size]='\0';  
   used++;  
   return b->buffer;  
 }  
   
 char *tilde_cstr(Char *from, UCell size, int clear)  
 /* like cstr(), but perform tilde expansion on the string */  
 {  
   char *s1,*s2;  
   int s1_len, s2_len;  
   struct passwd *getpwnam (), *user_entry;  
   
   if (size<1 || from[0]!='~')  
     return cstr(from, size, clear);  
   if (size<2 || from[1]=='/') {  
     s1 = (char *)getenv ("HOME");  
     if(s1 == NULL)  
       s1 = "";  
     s2 = from+1;  
     s2_len = size-1;  
   } else {  
     UCell i;  
     for (i=1; i<size && from[i]!='/'; i++)  
       ;  
     {  
       char user[i];  
       memcpy(user,from+1,i-1);  
       user[i-1]='\0';  
       user_entry=getpwnam(user);  
     }  
     if (user_entry==NULL)  
       return cstr(from, size, clear);  
     s1 = user_entry->pw_dir;  
     s2 = from+i;  
     s2_len = size-i;  
   }  
   s1_len = strlen(s1);  
   if (s1_len>1 && s1[s1_len-1]=='/')  
     s1_len--;  
   {  
     char path[s1_len+s2_len];  
     memcpy(path,s1,s1_len);  
     memcpy(path+s1_len,s2,s2_len);  
     return cstr(path,s1_len+s2_len,clear);  
   }  
 }  
 #endif  #endif
   
 #define NEWLINE '\n'  #define NULLC '\0'
   
 #ifndef HAVE_RINT  #ifdef MEMCMP_AS_SUBROUTINE
 #define rint(x) floor((x)+0.5)  extern int gforth_memcmp(const char * s1, const char * s2, size_t n);
   #define memcmp(s1,s2,n) gforth_memcmp(s1,s2,n)
 #endif  #endif
   
 #ifdef HAS_FILE  #define NEWLINE '\n'
 static char* fileattr[6]={"r","rb","r+","r+b","w","wb"};  #define CELL_MIN (((Cell)1)<<(sizeof(Cell)*CHAR_BIT-1))
   /* set CHECK_DIVISION to 0 if the hardware checks division by zero and
      division overflow.  Note that not all checks are controlled by
      CHECK_DIVISION, in particular not overflow checks in mixed-size
      words implemented by C's double-by-double division, because that
      division does not signal such overflows.  !! make an autoconf test
      that sets CHECK_DIVISION */
   #define CHECK_DIVISION 1
   
   /* conversion on fetch */
   
   #define vm_Cell2f(_cell,_x)             ((_x)=(Bool)(_cell))
   #define vm_Cell2c(_cell,_x)             ((_x)=(Char)(_cell))
   #define vm_Cell2n(_cell,_x)             ((_x)=(Cell)(_cell))
   #define vm_Cell2w(_cell,_x)             ((_x)=(Cell)(_cell))
   #define vm_Cell2u(_cell,_x)             ((_x)=(UCell)(_cell))
   #define vm_Cell2a_(_cell,_x)            ((_x)=(Cell *)(_cell))
   #define vm_Cell2c_(_cell,_x)            ((_x)=(Char *)(_cell))
   #define vm_Cell2f_(_cell,_x)            ((_x)=(Float *)(_cell))
   #define vm_Cell2df_(_cell,_x)           ((_x)=(DFloat *)(_cell))
   #define vm_Cell2sf_(_cell,_x)           ((_x)=(SFloat *)(_cell))
   #define vm_Cell2xt(_cell,_x)            ((_x)=(Xt)(_cell))
   #define vm_Cell2f83name(_cell,_x)       ((_x)=(struct F83Name *)(_cell))
   #define vm_Cell2longname(_cell,_x)      ((_x)=(struct Longname *)(_cell))
   #define vm_Float2r(_float,_x)           (_x=_float)
   
   /* conversion on store */
   
   #define vm_f2Cell(_x,_cell)             ((_cell)=(Cell)(_x))
   #define vm_c2Cell(_x,_cell)             ((_cell)=(Cell)(_x))
   #define vm_n2Cell(_x,_cell)             ((_cell)=(Cell)(_x))
   #define vm_w2Cell(_x,_cell)             ((_cell)=(Cell)(_x))
   #define vm_u2Cell(_x,_cell)             ((_cell)=(Cell)(_x))
   #define vm_a_2Cell(_x,_cell)            ((_cell)=(Cell)(_x))
   #define vm_c_2Cell(_x,_cell)            ((_cell)=(Cell)(_x))
   #define vm_f_2Cell(_x,_cell)            ((_cell)=(Cell)(_x))
   #define vm_df_2Cell(_x,_cell)           ((_cell)=(Cell)(_x))
   #define vm_sf_2Cell(_x,_cell)           ((_cell)=(Cell)(_x))
   #define vm_xt2Cell(_x,_cell)            ((_cell)=(Cell)(_x))
   #define vm_f83name2Cell(_x,_cell)       ((_cell)=(Cell)(_x))
   #define vm_longname2Cell(_x,_cell)      ((_cell)=(Cell)(_x))
   #define vm_r2Float(_x,_float)           (_float=_x)
   
 #ifndef O_BINARY  #define vm_Cell2Cell(_x,_y)             (_y=_x)
 #define O_BINARY 0  
 #endif  
 #ifndef O_TEXT  
 #define O_TEXT 0  
 #endif  
   
 static int ufileattr[6]= {  #ifdef NO_IP
   O_RDONLY|O_TEXT, O_RDONLY|O_BINARY,  #define IMM_ARG(access,value)           (VARIANT(value))
   O_RDWR  |O_TEXT, O_RDWR  |O_BINARY,  #else
   O_WRONLY|O_TEXT, O_WRONLY|O_BINARY };  #define IMM_ARG(access,value)           (access)
 #endif  #endif
   
 /* if machine.h has not defined explicit registers, define them as implicit */  /* if machine.h has not defined explicit registers, define them as implicit */
Line 194  static int ufileattr[6]= { Line 164  static int ufileattr[6]= {
 #ifndef LPREG  #ifndef LPREG
 #define LPREG  #define LPREG
 #endif  #endif
   #ifndef CAREG
   #define CAREG
   #endif
 #ifndef CFAREG  #ifndef CFAREG
 #define CFAREG  #define CFAREG
 #endif  #endif
Line 203  static int ufileattr[6]= { Line 176  static int ufileattr[6]= {
 #ifndef TOSREG  #ifndef TOSREG
 #define TOSREG  #define TOSREG
 #endif  #endif
   #ifndef spbREG
   #define spbREG
   #endif
   #ifndef spcREG
   #define spcREG
   #endif
   #ifndef spdREG
   #define spdREG
   #endif
   #ifndef speREG
   #define speREG
   #endif
   #ifndef spfREG
   #define spfREG
   #endif
   #ifndef spgREG
   #define spgREG
   #endif
   #ifndef sphREG
   #define sphREG
   #endif
 #ifndef FTOSREG  #ifndef FTOSREG
 #define FTOSREG  #define FTOSREG
 #endif  #endif
Line 211  static int ufileattr[6]= { Line 205  static int ufileattr[6]= {
 # define CPU_DEP1 0  # define CPU_DEP1 0
 #endif  #endif
   
 /* declare and compute cfa for certain threading variants */  /* instructions containing SUPER_END must be the last instruction of a
 /* warning: this is nonsyntactical; it will not work in place of a statement */     super-instruction (e.g., branches, EXECUTE, and other instructions
 #ifdef CFA_NEXT     ending the basic block). Instructions containing SET_IP get this
 #define DOCFA     automatically, so you usually don't have to write it.  If you have
      to write it, write it after IP points to the next instruction.
      Used for profiling.  Don't write it in a word containing SET_IP, or
      the following block will be counted twice. */
   #ifdef VM_PROFILING
   #define SUPER_END  vm_count_block(IP)
 #else  #else
 #define DOCFA   Xt cfa; GETCFA(cfa)  #define SUPER_END
 #endif  #endif
   #define SUPER_CONTINUE
   
 #ifdef GFORTH_DEBUGGING  #ifdef GFORTH_DEBUGGING
 /* define some VM registers as global variables, so they survive exceptions;  #if DEBUG
    global register variables are not up to the task (according to the   #define NAME(string) { saved_ip=ip; asm("# "string); fprintf(stderr,"%08lx depth=%3ld: "string"\n",(Cell)ip,sp0+3-sp);}
    GNU C manual) */  #else /* !DEBUG */
 Xt *ip;  #define NAME(string) { saved_ip=ip; asm(""); }
 Cell *rp;  /* the asm here is to avoid reordering of following stuff above the
      assignment; this is an old-style asm (no operands), and therefore
      is treated like "asm volatile ..."; i.e., it prevents most
      reorderings across itself.  We want the assignment above first,
      because the stack loads may already cause a stack underflow. */
   #endif /* !DEBUG */
   #elif DEBUG
   #       define  NAME(string)    {Cell __depth=sp0+3-sp; int i; fprintf(stderr,"%08lx depth=%3ld: "string,(Cell)ip,sp0+3-sp); for (i=__depth-1; i>0; i--) fprintf(stderr, " $%lx",sp[i]); fprintf(stderr, " $%lx\n",spTOS); }
   #else
   #       define  NAME(string) asm("# "string);
 #endif  #endif
   
 Label *engine(Xt *ip0, Cell *sp0, Cell *rp0, Float *fp0, Address lp0)  #ifdef DEBUG
   #define CFA_TO_NAME(__cfa) \
         Cell len, i; \
         char * name = __cfa; \
         for(i=0; i<32; i+=sizeof(Cell)) { \
           len = ((Cell*)name)[-1]; \
           if(len < 0) { \
             len &= 0x1F; \
             if((len+sizeof(Cell)) > i) break; \
           } len = 0; \
           name -= sizeof(Cell); \
         }
   #endif
   
   #if defined(HAS_FFCALL) || defined(HAS_LIBFFI)
   #define SAVE_REGS IF_fpTOS(fp[0]=fpTOS); gforth_SP=sp; gforth_FP=fp; gforth_RP=rp; gforth_LP=lp;
   #define REST_REGS sp=gforth_SP; fp=gforth_FP; rp=gforth_RP; lp=gforth_LP; IF_fpTOS(fpTOS=fp[0]);
   #endif
   
   #if !defined(ENGINE)
   /* normal engine */
   #define VARIANT(v)      (v)
   #define JUMP(target)    goto I_noop
   #define LABEL(name) H_##name: asm(""); I_##name:
   
   #elif ENGINE==2
   /* variant with padding between VM instructions for finding out
      cross-inst jumps (for dynamic code) */
   #define gforth_engine gforth_engine2
   #define VARIANT(v)      (v)
   #define JUMP(target)    goto I_noop
   #define LABEL(name) H_##name: SKIP16; I_##name:
   
   #elif ENGINE==3
   /* variant with different immediate arguments for finding out
      immediate arguments (for native code) */
   #define gforth_engine gforth_engine3
   #define VARIANT(v)      ((v)^0xffffffff)
   #define JUMP(target)    goto K_lit
   #define LABEL(name) H_##name: asm(""); I_##name:
   #else
   #error illegal ENGINE value
   #endif /* ENGINE */
   
   /* the asm(""); is there to get a stop compiled on Itanium */
   #define LABEL2(name) K_##name: asm("");
   #define LABEL3(name) J_##name: asm("");
   
   Label *gforth_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
 */  */
 {  {
 #ifndef GFORTH_DEBUGGING  #ifndef GFORTH_DEBUGGING
   register Xt *ip IPREG;  
   register Cell *rp RPREG;    register Cell *rp RPREG;
 #endif  #endif
   #ifndef NO_IP
     register Xt *ip IPREG = ip0;
   #endif
   register Cell *sp SPREG = sp0;    register Cell *sp SPREG = sp0;
   register Float *fp FPREG = fp0;    register Float *fp FPREG = fp0;
   register Address lp LPREG = lp0;    register Address lp LPREG = lp0;
 #ifdef CFA_NEXT  
   register Xt cfa CFAREG;    register Xt cfa CFAREG;
 #endif    register Label real_ca CAREG;
   register Address up UPREG = UP;  #ifdef MORE_VARS
   IF_TOS(register Cell TOS TOSREG;)    MORE_VARS
   IF_FTOS(register Float FTOS FTOSREG;)  #endif
   #ifdef HAS_FFCALL
     av_alist alist;
     extern va_alist gforth_clist;
     float frv;
     int irv;
     double drv;
     long long llrv;
     void * prv;
   #endif
   #ifdef HAS_LIBFFI
     extern void * gforth_ritem;
     extern void ** gforth_clist;
     extern void ffi_callback(ffi_cif * cif, void * resp, void ** args, Xt * ip);
   #endif
     register Address up UPREG = gforth_UP;
     register Cell MAYBE_UNUSED spTOS TOSREG;
     register Cell MAYBE_UNUSED spb spbREG;
     register Cell MAYBE_UNUSED spc spcREG;
     register Cell MAYBE_UNUSED spd spdREG;
     register Cell MAYBE_UNUSED spe speREG;
     register Cell MAYBE_UNUSED spf speREG;
     register Cell MAYBE_UNUSED spg speREG;
     register Cell MAYBE_UNUSED sph speREG;
     IF_fpTOS(register Float fpTOS FTOSREG;)
 #if defined(DOUBLY_INDIRECT)  #if defined(DOUBLY_INDIRECT)
   static Label *symbols;    static Label *symbols;
   static void *routines[]= {    static void *routines[]= {
   #define MAX_SYMBOLS (sizeof(routines)/sizeof(routines[0]))
 #else /* !defined(DOUBLY_INDIRECT) */  #else /* !defined(DOUBLY_INDIRECT) */
   static Label symbols[]= {    static Label symbols[]= {
   #define MAX_SYMBOLS (sizeof(symbols)/sizeof(symbols[0]))
 #endif /* !defined(DOUBLY_INDIRECT) */  #endif /* !defined(DOUBLY_INDIRECT) */
     (Label)&&docol,  #define INST_ADDR(name) ((Label)&&I_##name)
     (Label)&&docon,  #include PRIM_LAB_I
     (Label)&&dovar,  #undef INST_ADDR
     (Label)&&douser,      (Label)0,
     (Label)&&dodefer,  #define INST_ADDR(name) ((Label)&&K_##name)
     (Label)&&dofield,  #include PRIM_LAB_I
     (Label)&&dodoes,  #undef INST_ADDR
     /* the following entry is normally unused;  #define INST_ADDR(name) ((Label)&&J_##name)
        it's there because its index indicates a does-handler */  #include PRIM_LAB_I
     CPU_DEP1,  #undef INST_ADDR
 #include "prim_lab.i"      (Label)&&after_last,
     (Label)0      (Label)&&before_goto,
       (Label)&&after_goto,
   /* just mention the H_ labels, so the SKIP16s are not optimized away */
   #define INST_ADDR(name) ((Label)&&H_##name)
   #include PRIM_LAB_I
   #undef INST_ADDR
   };    };
 #ifdef CPU_DEP2  #ifdef CPU_DEP2
   CPU_DEP2    CPU_DEP2
 #endif  #endif
   
   ip = ip0;  
   rp = rp0;    rp = rp0;
 #ifdef DEBUG  #ifdef DEBUG
   fprintf(stderr,"ip=%x, sp=%x, rp=%x, fp=%x, lp=%x, up=%x\n",    fprintf(stderr,"ip=%x, sp=%x, rp=%x, fp=%x, lp=%x, up=%x\n",
           (unsigned)ip,(unsigned)sp,(unsigned)rp,            (unsigned)ip0,(unsigned)sp,(unsigned)rp,
           (unsigned)fp,(unsigned)lp,(unsigned)up);            (unsigned)fp,(unsigned)lp,(unsigned)up);
 #endif  #endif
   
   if (ip == NULL) {    if (ip0 == NULL) {
 #if defined(DOUBLY_INDIRECT)  #if defined(DOUBLY_INDIRECT)
 #define MAX_SYMBOLS (sizeof(routines)/sizeof(routines[0]))  #define CODE_OFFSET (26*sizeof(Cell))
 #define CODE_OFFSET (22*sizeof(Cell))  #define XT_OFFSET (22*sizeof(Cell))
     int i;      int i;
     Cell code_offset = offset_image? CODE_OFFSET : 0;      Cell code_offset = offset_image? CODE_OFFSET : 0;
       Cell xt_offset = offset_image? XT_OFFSET : 0;
   
     symbols = (Label *)(malloc(MAX_SYMBOLS*sizeof(Cell)+CODE_OFFSET)+code_offset);      symbols = (Label *)(malloc(MAX_SYMBOLS*sizeof(Cell)+CODE_OFFSET)+code_offset);
       xts = (Label *)(malloc(MAX_SYMBOLS*sizeof(Cell)+XT_OFFSET)+xt_offset);
     for (i=0; i<DOESJUMP+1; i++)      for (i=0; i<DOESJUMP+1; i++)
       symbols[i] = (Label)routines[i];        xts[i] = symbols[i] = (Label)routines[i];
     for (; routines[i]!=0; i++) {      for (; routines[i]!=0; i++) {
       if (i>=MAX_SYMBOLS) {        if (i>=MAX_SYMBOLS) {
         fprintf(stderr,"gforth-ditc: more than %d primitives\n",MAX_SYMBOLS);          fprintf(stderr,"gforth-ditc: more than %ld primitives\n",(long)MAX_SYMBOLS);
         exit(1);          exit(1);
         }
         xts[i] = symbols[i] = &routines[i];
     }      }
     symbols[i] = &routines[i];  
   }  
 #endif /* defined(DOUBLY_INDIRECT) */  #endif /* defined(DOUBLY_INDIRECT) */
   return symbols;      return symbols;
 }  
   
   IF_TOS(TOS = sp[0]);  
   IF_FTOS(FTOS = fp[0]);  
 /*  prep_terminal(); */  
   NEXT_P0;  
   NEXT;  
   
 #ifdef CPU_DEP3  
   CPU_DEP3  
 #endif  
     
  docol:  
   {  
     DOCFA;  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx: col: %08lx\n",(Cell)ip,(Cell)PFA1(cfa));  
 #endif  
 #ifdef CISC_NEXT  
     /* this is the simple version */  
     *--rp = (Cell)ip;  
     ip = (Xt *)PFA1(cfa);  
     NEXT_P0;  
     NEXT;  
 #else  
     /* this one is important, so we help the compiler optimizing  
        The following version may be better (for scheduling), but probably has  
        problems with code fields employing calls and delay slots  
        */  
     {  
       DEF_CA  
       Xt *current_ip = (Xt *)PFA1(cfa);  
       cfa = *current_ip;  
       NEXT1_P1;  
       *--rp = (Cell)ip;  
       ip = current_ip+1;  
       NEXT1_P2;  
     }  
 #endif  
   }    }
   
  docon:  #if !(defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING))
   {    sp += STACK_CACHE_DEFAULT-1;
     DOCFA;    /* some of those registers are dead, but its simpler to initialize them all */  spTOS = sp[0];
 #ifdef DEBUG    spb = sp[-1];
     fprintf(stderr,"%08lx: con: %08lx\n",(Cell)ip,*(Cell*)PFA1(cfa));    spc = sp[-2];
 #endif    spd = sp[-3];
 #ifdef USE_TOS    spe = sp[-4];
     *sp-- = TOS;    spf = sp[-5];
     TOS = *(Cell *)PFA1(cfa);    spg = sp[-6];
 #else    sph = sp[-7];
     *--sp = *(Cell *)PFA1(cfa);  
 #endif  
   }  
   NEXT_P0;  
   NEXT;  
     
  dovar:  
   {  
     DOCFA;  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx: var: %08lx\n",(Cell)ip,(Cell)PFA1(cfa));  
 #endif  #endif
 #ifdef USE_TOS  
     *sp-- = TOS;    IF_fpTOS(fpTOS = fp[0]);
     TOS = (Cell)PFA1(cfa);  /*  prep_terminal(); */
 #else  #ifdef NO_IP
     *--sp = (Cell)PFA1(cfa);    goto *(*(Label *)ip0);
 #endif    before_goto:
   }    goto *real_ca;
   NEXT_P0;    after_goto:;
   NEXT;  
     
  douser:  
   {  
     DOCFA;  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx: user: %08lx\n",(Cell)ip,(Cell)PFA1(cfa));  
 #endif  
 #ifdef USE_TOS  
     *sp-- = TOS;  
     TOS = (Cell)(up+*(Cell*)PFA1(cfa));  
 #else  #else
     *--sp = (Cell)(up+*(Cell*)PFA1(cfa));    SET_IP(ip);
     SUPER_END; /* count the first block, too */
     FIRST_NEXT;
 #endif  #endif
   }  
   NEXT_P0;  
   NEXT;  
     
  dodefer:  
   {  
     DOCFA;  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx: defer: %08lx\n",(Cell)ip,*(Cell*)PFA1(cfa));  
 #endif  
     EXEC(*(Xt *)PFA1(cfa));  
   }  
   
  dofield:  #ifdef CPU_DEP3
   {    CPU_DEP3
     DOCFA;  
 #ifdef DEBUG  
     fprintf(stderr,"%08lx: field: %08lx\n",(Cell)ip,(Cell)PFA1(cfa));  
 #endif  #endif
     TOS += *(Cell*)PFA1(cfa);   
   }  
   NEXT_P0;  
   NEXT;  
   
  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:  
        
      */  
   {  
     DOCFA;  
   
     /*    fprintf(stderr, "Got CFA %08lx at doescode %08lx/%08lx: does: %08lx\n",cfa,(Cell)ip,(Cell)PFA(cfa),(Cell)DOES_CODE1(cfa));*/  #include PRIM_I
 #ifdef DEBUG    after_last: return (Label *)0;
     fprintf(stderr,"%08lx/%08lx: does: %08lx\n",(Cell)ip,(Cell)PFA(cfa),(Cell)DOES_CODE1(cfa));    /*needed only to get the length of the last primitive */
     fflush(stderr);  
 #endif  
     *--rp = (Cell)ip;  
     /* PFA1 might collide with DOES_CODE1 here, so we use PFA */  
     ip = DOES_CODE1(cfa);  
 #ifdef USE_TOS  
     *sp-- = TOS;  
     TOS = (Cell)PFA(cfa);  
 #else  
     *--sp = (Cell)PFA(cfa);  
 #endif  
     /*    fprintf(stderr,"TOS = %08lx, IP=%08lx\n", TOS, IP);*/  
   }  
   NEXT_P0;  
   NEXT;  
   
 #include "prim.i"    return (Label *)0;
 }  }

Removed from v.1.10  
changed lines
  Added in v.1.92


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