version 1.2, 1998/03/21 21:37:50
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version 1.11, 1999/02/06 22:28:24
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/* Gforth virtual machine (aka inner interpreter) |
/* Gforth virtual machine (aka inner interpreter) |
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Copyright (C) 1995 Free Software Foundation, Inc. |
Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc. |
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This file is part of Gforth. |
This file is part of Gforth. |
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#include <stdio.h> |
#include <stdio.h> |
#include <string.h> |
#include <string.h> |
#include <math.h> |
#include <math.h> |
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#include <assert.h> |
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#include <stdlib.h> |
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#include <errno.h> |
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#include "forth.h" |
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#include "io.h" |
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#include "threaded.h" |
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#ifndef STANDALONE |
#include <sys/types.h> |
#include <sys/types.h> |
#include <sys/stat.h> |
#include <sys/stat.h> |
#include <fcntl.h> |
#include <fcntl.h> |
#include <assert.h> |
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#include <stdlib.h> |
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#include <time.h> |
#include <time.h> |
#include <sys/time.h> |
#include <sys/time.h> |
#include <unistd.h> |
#include <unistd.h> |
#include <errno.h> |
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#include <pwd.h> |
#include <pwd.h> |
#include "forth.h" |
#else |
#include "io.h" |
#include "systypes.h" |
#include "threaded.h" |
#endif |
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#if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN) /* what else? */ |
#if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN) /* what else? */ |
#include <dlfcn.h> |
#include <dlfcn.h> |
#endif |
#endif |
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#if defined(_WIN32) |
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#include <windows.h> |
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#endif |
#ifdef hpux |
#ifdef hpux |
#include <dl.h> |
#include <dl.h> |
#endif |
#endif |
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Line 59
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#define IOR(flag) ((flag)? -512-errno : 0) |
#define IOR(flag) ((flag)? -512-errno : 0) |
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typedef struct F83Name { |
struct F83Name { |
struct F83Name *next; /* the link field for old hands */ |
struct F83Name *next; /* the link field for old hands */ |
char countetc; |
char countetc; |
Char name[0]; |
char name[0]; |
} F83Name; |
}; |
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/* are macros for setting necessary? */ |
/* are macros for setting necessary? */ |
#define F83NAME_COUNT(np) ((np)->countetc & 0x1f) |
#define F83NAME_COUNT(np) ((np)->countetc & 0x1f) |
Line 73 int emitcounter;
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Line 80 int emitcounter;
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#endif |
#endif |
#define NULLC '\0' |
#define NULLC '\0' |
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#ifdef HAS_FILE |
char *cstr(Char *from, UCell size, int clear) |
char *cstr(Char *from, UCell size, int clear) |
/* return a C-string corresponding to the Forth string ( FROM SIZE ). |
/* 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 */ |
the C-string lives until the next call of cstr with CLEAR being true */ |
Line 146 char *tilde_cstr(Char *from, UCell size,
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Line 154 char *tilde_cstr(Char *from, UCell size,
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return cstr(path,s1_len+s2_len,clear); |
return cstr(path,s1_len+s2_len,clear); |
} |
} |
} |
} |
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#endif |
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#define NEWLINE '\n' |
#define NEWLINE '\n' |
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Line 154 char *tilde_cstr(Char *from, UCell size,
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Line 162 char *tilde_cstr(Char *from, UCell size,
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#define rint(x) floor((x)+0.5) |
#define rint(x) floor((x)+0.5) |
#endif |
#endif |
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#ifdef HAS_FILE |
static char* fileattr[6]={"r","rb","r+","r+b","w","wb"}; |
static char* fileattr[6]={"r","rb","r+","r+b","w","wb"}; |
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#ifndef O_BINARY |
#ifndef O_BINARY |
Line 167 static int ufileattr[6]= {
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Line 176 static int ufileattr[6]= {
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O_RDONLY|O_TEXT, O_RDONLY|O_BINARY, |
O_RDONLY|O_TEXT, O_RDONLY|O_BINARY, |
O_RDWR |O_TEXT, O_RDWR |O_BINARY, |
O_RDWR |O_TEXT, O_RDWR |O_BINARY, |
O_WRONLY|O_TEXT, O_WRONLY|O_BINARY }; |
O_WRONLY|O_TEXT, O_WRONLY|O_BINARY }; |
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#endif |
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/* if machine.h has not defined explicit registers, define them as implicit */ |
/* if machine.h has not defined explicit registers, define them as implicit */ |
#ifndef IPREG |
#ifndef IPREG |
Line 209 static int ufileattr[6]= {
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Line 219 static int ufileattr[6]= {
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#define DOCFA Xt cfa; GETCFA(cfa) |
#define DOCFA Xt cfa; GETCFA(cfa) |
#endif |
#endif |
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#ifdef GFORTH_DEBUGGING |
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/* define some VM registers as global variables, so they survive exceptions; |
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global register variables are not up to the task (according to the |
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GNU C manual) */ |
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Xt *ip; |
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Cell *rp; |
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#endif |
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Label *engine(Xt *ip0, Cell *sp0, Cell *rp0, Float *fp0, Address lp0) |
Label *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 |
*/ |
*/ |
{ |
{ |
register Xt *ip IPREG = ip0; |
#ifndef GFORTH_DEBUGGING |
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register Xt *ip IPREG; |
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register Cell *rp RPREG; |
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#endif |
register Cell *sp SPREG = sp0; |
register Cell *sp SPREG = sp0; |
register Cell *rp RPREG = rp0; |
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register Float *fp FPREG = fp0; |
register Float *fp FPREG = fp0; |
register Address lp LPREG = lp0; |
register Address lp LPREG = lp0; |
#ifdef CFA_NEXT |
#ifdef CFA_NEXT |
register Xt cfa CFAREG; |
register Xt cfa CFAREG; |
#endif |
#endif |
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#ifdef MORE_VARS |
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MORE_VARS |
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#endif |
register Address up UPREG = UP; |
register Address up UPREG = UP; |
IF_TOS(register Cell TOS TOSREG;) |
IF_TOS(register Cell TOS TOSREG;) |
IF_FTOS(register Float FTOS FTOSREG;) |
IF_FTOS(register Float FTOS FTOSREG;) |
Line 231 Label *engine(Xt *ip0, Cell *sp0, Cell *
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Line 254 Label *engine(Xt *ip0, Cell *sp0, Cell *
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#else /* !defined(DOUBLY_INDIRECT) */ |
#else /* !defined(DOUBLY_INDIRECT) */ |
static Label symbols[]= { |
static Label symbols[]= { |
#endif /* !defined(DOUBLY_INDIRECT) */ |
#endif /* !defined(DOUBLY_INDIRECT) */ |
&&docol, |
(Label)&&docol, |
&&docon, |
(Label)&&docon, |
&&dovar, |
(Label)&&dovar, |
&&douser, |
(Label)&&douser, |
&&dodefer, |
(Label)&&dodefer, |
&&dofield, |
(Label)&&dofield, |
&&dodoes, |
(Label)&&dodoes, |
/* the following entry is normally unused; |
/* the following entry is normally unused; |
it's there because its index indicates a does-handler */ |
it's there because its index indicates a does-handler */ |
CPU_DEP1, |
CPU_DEP1, |
#include "prim_lab.i" |
#include "prim_lab.i" |
0 |
(Label)0 |
}; |
}; |
#ifdef CPU_DEP2 |
#ifdef CPU_DEP2 |
CPU_DEP2 |
CPU_DEP2 |
#endif |
#endif |
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ip = ip0; |
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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)ip,(unsigned)sp,(unsigned)rp, |
Line 256 Label *engine(Xt *ip0, Cell *sp0, Cell *
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Line 281 Label *engine(Xt *ip0, Cell *sp0, Cell *
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if (ip == NULL) { |
if (ip == NULL) { |
#if defined(DOUBLY_INDIRECT) |
#if defined(DOUBLY_INDIRECT) |
#define MAX_SYMBOLS 1000 |
#define MAX_SYMBOLS (sizeof(routines)/sizeof(routines[0])) |
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#define CODE_OFFSET (22*sizeof(Cell)) |
int i; |
int i; |
Cell code_offset = offset_image? 22*sizeof(Cell) : 0; |
Cell code_offset = offset_image? CODE_OFFSET : 0; |
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symbols = (Label *)(malloc(MAX_SYMBOLS*sizeof(Cell)+code_offset)+code_offset); |
symbols = (Label *)(malloc(MAX_SYMBOLS*sizeof(Cell)+CODE_OFFSET)+code_offset); |
for (i=0; i<DOESJUMP+1; i++) |
for (i=0; i<DOESJUMP+1; i++) |
symbols[i] = (Label)routines[i]; |
symbols[i] = (Label)routines[i]; |
for (; routines[i]!=0; i++) { |
for (; routines[i]!=0; i++) { |
Line 277 Label *engine(Xt *ip0, Cell *sp0, Cell *
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Line 303 Label *engine(Xt *ip0, Cell *sp0, Cell *
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IF_TOS(TOS = sp[0]); |
IF_TOS(TOS = sp[0]); |
IF_FTOS(FTOS = fp[0]); |
IF_FTOS(FTOS = fp[0]); |
/* prep_terminal(); */ |
/* prep_terminal(); */ |
NEXT_P0; |
SET_IP(ip); |
NEXT; |
NEXT; |
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#ifdef CPU_DEP3 |
#ifdef CPU_DEP3 |
CPU_DEP3 |
CPU_DEP3 |
#endif |
#endif |
Line 293 Label *engine(Xt *ip0, Cell *sp0, Cell *
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Line 320 Label *engine(Xt *ip0, Cell *sp0, Cell *
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#ifdef CISC_NEXT |
#ifdef CISC_NEXT |
/* this is the simple version */ |
/* this is the simple version */ |
*--rp = (Cell)ip; |
*--rp = (Cell)ip; |
ip = (Xt *)PFA1(cfa); |
SET_IP((Xt *)PFA1(cfa)); |
NEXT_P0; |
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NEXT; |
NEXT; |
#else |
#else |
/* this one is important, so we help the compiler optimizing |
/* this one is important, so we help the compiler optimizing */ |
The following version may be better (for scheduling), but probably has |
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problems with code fields employing calls and delay slots |
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*/ |
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{ |
{ |
DEF_CA |
DEF_CA |
Xt *current_ip = (Xt *)PFA1(cfa); |
rp[-1] = (Cell)ip; |
cfa = *current_ip; |
SET_IP((Xt *)PFA1(cfa)); |
NEXT1_P1; |
NEXT_P1; |
*--rp = (Cell)ip; |
rp--; |
ip = current_ip+1; |
NEXT_P2; |
NEXT1_P2; |
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} |
} |
#endif |
#endif |
} |
} |
Line 376 Label *engine(Xt *ip0, Cell *sp0, Cell *
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Line 398 Label *engine(Xt *ip0, Cell *sp0, Cell *
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#ifdef DEBUG |
#ifdef DEBUG |
fprintf(stderr,"%08lx: field: %08lx\n",(Cell)ip,(Cell)PFA1(cfa)); |
fprintf(stderr,"%08lx: field: %08lx\n",(Cell)ip,(Cell)PFA1(cfa)); |
#endif |
#endif |
TOS += *(Cell*)PFA1(cfa); |
TOS += *(Cell*)PFA1(cfa); |
} |
} |
NEXT_P0; |
NEXT_P0; |
NEXT; |
NEXT; |
Line 409 Label *engine(Xt *ip0, Cell *sp0, Cell *
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Line 431 Label *engine(Xt *ip0, Cell *sp0, Cell *
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#endif |
#endif |
*--rp = (Cell)ip; |
*--rp = (Cell)ip; |
/* PFA1 might collide with DOES_CODE1 here, so we use PFA */ |
/* PFA1 might collide with DOES_CODE1 here, so we use PFA */ |
ip = DOES_CODE1(cfa); |
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#ifdef USE_TOS |
#ifdef USE_TOS |
*sp-- = TOS; |
*sp-- = TOS; |
TOS = (Cell)PFA(cfa); |
TOS = (Cell)PFA(cfa); |
#else |
#else |
*--sp = (Cell)PFA(cfa); |
*--sp = (Cell)PFA(cfa); |
#endif |
#endif |
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SET_IP(DOES_CODE1(cfa)); |
/* fprintf(stderr,"TOS = %08lx, IP=%08lx\n", TOS, IP);*/ |
/* fprintf(stderr,"TOS = %08lx, IP=%08lx\n", TOS, IP);*/ |
} |
} |
NEXT_P0; |
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NEXT; |
NEXT; |
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#include "prim.i" |
#include "prim.i" |