version 1.48, 2002/12/19 20:14:57
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version 1.64, 2003/08/15 14:07:04
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/* Gforth virtual machine (aka inner interpreter) |
/* Gforth virtual machine (aka inner interpreter) |
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Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc. |
Copyright (C) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc. |
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This file is part of Gforth. |
This file is part of Gforth. |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
*/ |
*/ |
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undefine(`symbols') |
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#include "config.h" |
#include "config.h" |
#include "forth.h" |
#include "forth.h" |
#include <ctype.h> |
#include <ctype.h> |
Line 61 undefine(`symbols')
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Line 59 undefine(`symbols')
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#include <dl.h> |
#include <dl.h> |
#endif |
#endif |
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#ifdef HAS_FFCALL |
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#include <avcall.h> |
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#include <callback.h> |
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#endif |
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#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 |
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#define IOR(flag) ((flag)? -512-errno : 0) |
#ifndef HAVE_FSEEKO |
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#define fseeko fseek |
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#endif |
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struct F83Name { |
#ifndef HAVE_FTELLO |
struct F83Name *next; /* the link field for old hands */ |
#define ftello ftell |
char countetc; |
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char name[0]; |
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}; |
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#define F83NAME_COUNT(np) ((np)->countetc & 0x1f) |
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struct Longname { |
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struct Longname *next; /* the link field for old hands */ |
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Cell countetc; |
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char name[0]; |
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}; |
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#define LONGNAME_COUNT(np) ((np)->countetc & (((~((UCell)0))<<3)>>3)) |
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Cell *SP; |
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Float *FP; |
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Address UP=NULL; |
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#if 0 |
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/* not used currently */ |
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int emitcounter; |
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#endif |
#endif |
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#define NULLC '\0' |
#define NULLC '\0' |
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#ifdef MEMCMP_AS_SUBROUTINE |
#ifdef MEMCMP_AS_SUBROUTINE |
Line 101 extern int gforth_memcmp(const char * s1
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Line 86 extern int gforth_memcmp(const char * s1
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#define NEWLINE '\n' |
#define NEWLINE '\n' |
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#ifdef HAS_FILE |
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static char* fileattr[6]={"rb","rb","r+b","r+b","wb","wb"}; |
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static char* pfileattr[6]={"r","r","r+","r+","w","w"}; |
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#ifndef O_BINARY |
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#define O_BINARY 0 |
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#endif |
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#ifndef O_TEXT |
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#define O_TEXT 0 |
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#endif |
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static int ufileattr[6]= { |
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O_RDONLY|O_BINARY, O_RDONLY|O_BINARY, |
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O_RDWR |O_BINARY, O_RDWR |O_BINARY, |
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O_WRONLY|O_BINARY, O_WRONLY|O_BINARY }; |
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#endif |
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/* conversion on fetch */ |
/* conversion on fetch */ |
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#define vm_Cell2f(_cell,_x) ((_x)=(Bool)(_cell)) |
#define vm_Cell2f(_cell,_x) ((_x)=(Bool)(_cell)) |
Line 193 static int ufileattr[6]= {
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Line 161 static int ufileattr[6]= {
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# define CPU_DEP1 0 |
# define CPU_DEP1 0 |
#endif |
#endif |
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/* instructions containing these must be the last instruction of a |
/* instructions containing SUPER_END must be the last instruction of a |
super-instruction (e.g., branches, EXECUTE, and other instructions |
super-instruction (e.g., branches, EXECUTE, and other instructions |
ending the basic block). Instructions containing SET_IP get this |
ending the basic block). Instructions containing SET_IP get this |
automatically, so you usually don't have to write it. If you have |
automatically, so you usually don't have to write it. If you have |
Line 207 static int ufileattr[6]= {
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Line 175 static int ufileattr[6]= {
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#endif |
#endif |
#define SUPER_CONTINUE |
#define SUPER_CONTINUE |
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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 *saved_ip; |
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Cell *rp; |
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#endif |
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#ifdef NO_IP |
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static Label next_code; |
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#endif |
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#ifdef DEBUG |
#ifdef DEBUG |
#define CFA_TO_NAME(__cfa) \ |
#define CFA_TO_NAME(__cfa) \ |
Cell len, i; \ |
Cell len, i; \ |
Line 233 static Label next_code;
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Line 189 static Label next_code;
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} |
} |
#endif |
#endif |
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define(enginerest, |
#ifdef HAS_FFCALL |
`(Xt *ip0, Cell *sp0, Cell *rp0, Float *fp0, Address lp0) |
#define SAVE_REGS IF_spTOS(sp[0]=spTOS); IF_fpTOS(fp[0]=fpTOS); SP=sp; FP=fp; RP=rp; LP=lp; |
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#define REST_REGS sp=SP; fp=FP; rp=RP; lp=LP; IF_spTOS(spTOS=sp[0]); IF_fpTOS(fpTOS=fp[0]); |
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#endif |
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#if !defined(ENGINE) |
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/* normal engine */ |
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#define VARIANT(v) (v) |
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#define JUMP(target) goto I_noop |
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#define LABEL(name) J_##name: asm(""); I_##name: |
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#elif ENGINE==2 |
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/* variant with padding between VM instructions for finding out |
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cross-inst jumps (for dynamic code) */ |
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#define engine engine2 |
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#define VARIANT(v) (v) |
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#define JUMP(target) goto I_noop |
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#define LABEL(name) J_##name: SKIP16; I_##name: |
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#define IN_ENGINE2 |
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#elif ENGINE==3 |
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/* variant with different immediate arguments for finding out |
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immediate arguments (for native code) */ |
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#define engine engine3 |
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#define VARIANT(v) ((v)^0xffffffff) |
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#define JUMP(target) goto K_lit |
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#define LABEL(name) J_##name: asm(""); I_##name: |
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#else |
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#error illegal ENGINE value |
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#endif /* ENGINE */ |
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#define LABEL2(name) K_##name: |
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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 |
*/ |
*/ |
Line 252 define(enginerest,
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Line 240 define(enginerest,
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#ifdef MORE_VARS |
#ifdef MORE_VARS |
MORE_VARS |
MORE_VARS |
#endif |
#endif |
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#ifdef HAS_FFCALL |
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av_alist alist; |
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extern va_alist clist; |
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float frv; |
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int irv; |
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double drv; |
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long long llrv; |
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void * prv; |
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#endif |
register Address up UPREG = UP; |
register Address up UPREG = UP; |
IF_spTOS(register Cell spTOS TOSREG;) |
IF_spTOS(register Cell spTOS TOSREG;) |
IF_fpTOS(register Float fpTOS FTOSREG;) |
IF_fpTOS(register Float fpTOS FTOSREG;) |
Line 273 define(enginerest,
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Line 270 define(enginerest,
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/* the following entry is normally unused; |
/* the following entry is normally unused; |
it is there because its index indicates a does-handler */ |
it is there because its index indicates a does-handler */ |
CPU_DEP1, |
CPU_DEP1, |
#define INST_ADDR(name) (Label)&&I_##name |
#define INST_ADDR(name) ((Label)&&I_##name) |
#include "prim_lab.i" |
#include "prim_lab.i" |
#undef INST_ADDR |
#undef INST_ADDR |
(Label)&&after_last, |
(Label)&&after_last, |
(Label)0, |
(Label)0, |
#define INST_ADDR(name) (Label)&&K_##name |
#define INST_ADDR(name) ((Label)&&K_##name) |
#include "prim_lab.i" |
#include "prim_lab.i" |
#undef INST_ADDR |
#undef INST_ADDR |
#ifdef IN_ENGINE2 |
#define INST_ADDR(name) ((Label)&&J_##name) |
#define INST_ADDR(name) (Label)&&J_##name |
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#include "prim_lab.i" |
#include "prim_lab.i" |
#undef INST_ADDR |
#undef INST_ADDR |
#endif |
(Label)&&after_last |
}; |
}; |
#ifdef CPU_DEP2 |
#ifdef CPU_DEP2 |
CPU_DEP2 |
CPU_DEP2 |
Line 312 define(enginerest,
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Line 308 define(enginerest,
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xts[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]; |
xts[i] = symbols[i] = &routines[i]; |
Line 496 define(enginerest,
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Line 492 define(enginerest,
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NEXT; |
NEXT; |
#endif |
#endif |
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#ifndef IN_ENGINE2 |
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#define LABEL(name) I_##name: |
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#else |
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#define LABEL(name) J_##name: asm(".skip 16"); I_##name: |
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#endif |
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#define LABEL2(name) K_##name: |
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#include "prim.i" |
#include "prim.i" |
#undef LABEL |
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after_last: return (Label *)0; |
after_last: return (Label *)0; |
/*needed only to get the length of the last primitive */ |
/*needed only to get the length of the last primitive */ |
}' |
} |
) |
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#define VARIANT(v) (v) |
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#define JUMP(target) goto I_noop |
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Label *engine enginerest |
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#ifndef NO_DYNAMIC |
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#ifdef NO_IP |
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#undef VARIANT |
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#define VARIANT(v) ((v)^0xffffffff) |
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#undef JUMP |
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#define JUMP(target) goto K_lit |
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Label *engine3 enginerest |
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#endif |
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#undef VARIANT |
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#define VARIANT(v) (v) |
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#undef JUMP |
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#define JUMP(target) goto I_noop |
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#define IN_ENGINE2 |
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Label *engine2 enginerest |
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#endif |
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