version 1.48, 2002/12/19 20:14:57
|
version 1.87, 2005/12/31 15:46:13
|
Line 1
|
Line 1
|
/* Gforth virtual machine (aka inner interpreter) |
/* Gforth virtual machine (aka inner interpreter) |
|
|
Copyright (C) 1995,1996,1997,1998,2000 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 19
|
Line 19
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
*/ |
*/ |
|
|
undefine(`symbols') |
#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 "forth.h" |
Line 61 undefine(`symbols')
|
Line 66 undefine(`symbols')
|
#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 |
|
#endif |
|
|
struct F83Name { |
#ifndef HAVE_FTELLO |
struct F83Name *next; /* the link field for old hands */ |
#define ftello ftell |
char countetc; |
|
char name[0]; |
|
}; |
|
|
|
#define F83NAME_COUNT(np) ((np)->countetc & 0x1f) |
|
|
|
struct Longname { |
|
struct Longname *next; /* the link field for old hands */ |
|
Cell countetc; |
|
char name[0]; |
|
}; |
|
|
|
#define LONGNAME_COUNT(np) ((np)->countetc & (((~((UCell)0))<<3)>>3)) |
|
|
|
Cell *SP; |
|
Float *FP; |
|
Address UP=NULL; |
|
|
|
#if 0 |
|
/* not used currently */ |
|
int emitcounter; |
|
#endif |
#endif |
|
|
#define NULLC '\0' |
#define NULLC '\0' |
|
|
#ifdef MEMCMP_AS_SUBROUTINE |
#ifdef MEMCMP_AS_SUBROUTINE |
Line 101 extern int gforth_memcmp(const char * s1
|
Line 97 extern int gforth_memcmp(const char * s1
|
|
|
#define NEWLINE '\n' |
#define NEWLINE '\n' |
|
|
#ifdef HAS_FILE |
|
static char* fileattr[6]={"rb","rb","r+b","r+b","wb","wb"}; |
|
static char* pfileattr[6]={"r","r","r+","r+","w","w"}; |
|
|
|
#ifndef O_BINARY |
|
#define O_BINARY 0 |
|
#endif |
|
#ifndef O_TEXT |
|
#define O_TEXT 0 |
|
#endif |
|
|
|
static int ufileattr[6]= { |
|
O_RDONLY|O_BINARY, O_RDONLY|O_BINARY, |
|
O_RDWR |O_BINARY, O_RDWR |O_BINARY, |
|
O_WRONLY|O_BINARY, O_WRONLY|O_BINARY }; |
|
#endif |
|
|
|
/* conversion on fetch */ |
/* conversion on fetch */ |
|
|
#define vm_Cell2f(_cell,_x) ((_x)=(Bool)(_cell)) |
#define vm_Cell2f(_cell,_x) ((_x)=(Bool)(_cell)) |
Line 176 static int ufileattr[6]= {
|
Line 155 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 185 static int ufileattr[6]= {
|
Line 167 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 193 static int ufileattr[6]= {
|
Line 196 static int ufileattr[6]= {
|
# define CPU_DEP1 0 |
# define CPU_DEP1 0 |
#endif |
#endif |
|
|
/* 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 208 static int ufileattr[6]= {
|
Line 211 static int ufileattr[6]= {
|
#define SUPER_CONTINUE |
#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 *saved_ip; |
#define NAME(string) { saved_ip=ip; asm(""); } |
Cell *rp; |
/* the asm here is to avoid reordering of following stuff above the |
#endif |
assignment; this is an old-style asm (no operands), and therefore |
|
is treated like "asm volatile ..."; i.e., it prevents most |
#ifdef NO_IP |
reorderings across itself. We want the assignment above first, |
static Label next_code; |
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 |
|
|
#ifdef DEBUG |
#ifdef DEBUG |
Line 233 static Label next_code;
|
Line 241 static Label next_code;
|
} |
} |
#endif |
#endif |
|
|
define(enginerest, |
#if defined(HAS_FFCALL) || defined(HAS_LIBFFI) |
`(Xt *ip0, Cell *sp0, Cell *rp0, Float *fp0, Address lp0) |
#define SAVE_REGS IF_fpTOS(fp[0]=fpTOS); SP=sp; FP=fp; RP=rp; LP=lp; |
|
#define REST_REGS sp=SP; fp=FP; rp=RP; lp=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 engine 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 engine 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 *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 249 define(enginerest,
|
Line 290 define(enginerest,
|
register Float *fp FPREG = fp0; |
register Float *fp FPREG = fp0; |
register Address lp LPREG = lp0; |
register Address lp LPREG = lp0; |
register Xt cfa CFAREG; |
register Xt cfa CFAREG; |
|
register Label real_ca CAREG; |
#ifdef MORE_VARS |
#ifdef MORE_VARS |
MORE_VARS |
MORE_VARS |
#endif |
#endif |
|
#ifdef HAS_FFCALL |
|
av_alist alist; |
|
extern va_alist clist; |
|
float frv; |
|
int irv; |
|
double drv; |
|
long long llrv; |
|
void * prv; |
|
#endif |
|
#ifdef HAS_LIBFFI |
|
extern void * ritem; |
|
extern void ** clist; |
|
extern void ffi_callback(ffi_cif * cif, void * resp, void ** args, Xt * ip); |
|
#endif |
register Address up UPREG = UP; |
register Address up UPREG = UP; |
IF_spTOS(register Cell spTOS TOSREG;) |
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_fpTOS(register Float fpTOS FTOSREG;) |
#if defined(DOUBLY_INDIRECT) |
#if defined(DOUBLY_INDIRECT) |
static Label *symbols; |
static Label *symbols; |
Line 263 define(enginerest,
|
Line 326 define(enginerest,
|
static Label symbols[]= { |
static Label symbols[]= { |
#define MAX_SYMBOLS (sizeof(symbols)/sizeof(symbols[0])) |
#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, |
|
(Label)&&douser, |
|
(Label)&&dodefer, |
|
(Label)&&dofield, |
|
(Label)&&dodoes, |
|
/* the following entry is normally unused; |
|
it is there because its index indicates a does-handler */ |
|
CPU_DEP1, |
|
#define INST_ADDR(name) (Label)&&I_##name |
|
#include "prim_lab.i" |
|
#undef INST_ADDR |
#undef INST_ADDR |
(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 |
#include PRIM_LAB_I |
#include "prim_lab.i" |
#undef INST_ADDR |
|
(Label)&&after_last, |
|
(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 |
#undef INST_ADDR |
#endif |
|
}; |
}; |
#ifdef CPU_DEP2 |
#ifdef CPU_DEP2 |
CPU_DEP2 |
CPU_DEP2 |
Line 312 define(enginerest,
|
Line 369 define(enginerest,
|
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 321 define(enginerest,
|
Line 378 define(enginerest,
|
return symbols; |
return symbols; |
} |
} |
|
|
IF_spTOS(spTOS = sp[0]); |
#if !(defined(GFORTH_DEBUGGING) || defined(INDIRECT_THREADED) || defined(DOUBLY_INDIRECT) || defined(VM_PROFILING)) |
|
sp += STACK_CACHE_DEFAULT-1; |
|
/* some of those registers are dead, but its simpler to initialize them all */ spTOS = sp[0]; |
|
spb = sp[-1]; |
|
spc = sp[-2]; |
|
spd = sp[-3]; |
|
spe = sp[-4]; |
|
spf = sp[-5]; |
|
spg = sp[-6]; |
|
sph = sp[-7]; |
|
#endif |
|
|
IF_fpTOS(fpTOS = fp[0]); |
IF_fpTOS(fpTOS = fp[0]); |
/* prep_terminal(); */ |
/* prep_terminal(); */ |
#ifdef NO_IP |
#ifdef NO_IP |
goto *(*(Label *)ip0); |
goto *(*(Label *)ip0); |
|
before_goto: |
|
goto *real_ca; |
|
after_goto:; |
#else |
#else |
SET_IP(ip); |
SET_IP(ip); |
SUPER_END; /* count the first block, too */ |
SUPER_END; /* count the first block, too */ |
NEXT; |
FIRST_NEXT; |
#endif |
#endif |
|
|
#ifdef CPU_DEP3 |
#ifdef CPU_DEP3 |
CPU_DEP3 |
CPU_DEP3 |
#endif |
#endif |
|
|
docol: |
|
{ |
|
#ifdef NO_IP |
|
*--rp = next_code; |
|
goto **(Label *)PFA1(cfa); |
|
#else |
|
#ifdef DEBUG |
|
{ |
|
CFA_TO_NAME(cfa); |
|
fprintf(stderr,"%08lx: col: %08lx %.*s\n",(Cell)ip,(Cell)PFA1(cfa), |
|
len,name); |
|
} |
|
#endif |
|
#ifdef CISC_NEXT |
|
/* this is the simple version */ |
|
*--rp = (Cell)ip; |
|
SET_IP((Xt *)PFA1(cfa)); |
|
SUPER_END; |
|
NEXT; |
|
#else |
|
/* this one is important, so we help the compiler optimizing */ |
|
{ |
|
DEF_CA |
|
rp[-1] = (Cell)ip; |
|
SET_IP((Xt *)PFA1(cfa)); |
|
SUPER_END; |
|
NEXT_P1; |
|
rp--; |
|
NEXT_P2; |
|
} |
|
#endif |
|
#endif |
|
} |
|
|
|
docon: |
#include PRIM_I |
{ |
|
#ifdef DEBUG |
|
fprintf(stderr,"%08lx: con: %08lx\n",(Cell)ip,*(Cell*)PFA1(cfa)); |
|
#endif |
|
#ifdef USE_TOS |
|
*sp-- = spTOS; |
|
spTOS = *(Cell *)PFA1(cfa); |
|
#else |
|
*--sp = *(Cell *)PFA1(cfa); |
|
#endif |
|
} |
|
#ifdef NO_IP |
|
goto *next_code; |
|
#else |
|
NEXT_P0; |
|
NEXT; |
|
#endif |
|
|
|
dovar: |
|
{ |
|
#ifdef DEBUG |
|
fprintf(stderr,"%08lx: var: %08lx\n",(Cell)ip,(Cell)PFA1(cfa)); |
|
#endif |
|
#ifdef USE_TOS |
|
*sp-- = spTOS; |
|
spTOS = (Cell)PFA1(cfa); |
|
#else |
|
*--sp = (Cell)PFA1(cfa); |
|
#endif |
|
} |
|
#ifdef NO_IP |
|
goto *next_code; |
|
#else |
|
NEXT_P0; |
|
NEXT; |
|
#endif |
|
|
|
douser: |
|
{ |
|
#ifdef DEBUG |
|
fprintf(stderr,"%08lx: user: %08lx\n",(Cell)ip,(Cell)PFA1(cfa)); |
|
#endif |
|
#ifdef USE_TOS |
|
*sp-- = spTOS; |
|
spTOS = (Cell)(up+*(Cell*)PFA1(cfa)); |
|
#else |
|
*--sp = (Cell)(up+*(Cell*)PFA1(cfa)); |
|
#endif |
|
} |
|
#ifdef NO_IP |
|
goto *next_code; |
|
#else |
|
NEXT_P0; |
|
NEXT; |
|
#endif |
|
|
|
dodefer: |
|
{ |
|
#ifdef DEBUG |
|
fprintf(stderr,"%08lx: defer: %08lx\n",(Cell)ip,*(Cell*)PFA1(cfa)); |
|
#endif |
|
SUPER_END; |
|
EXEC(*(Xt *)PFA1(cfa)); |
|
} |
|
|
|
dofield: |
|
{ |
|
#ifdef DEBUG |
|
fprintf(stderr,"%08lx: field: %08lx\n",(Cell)ip,(Cell)PFA1(cfa)); |
|
#endif |
|
spTOS += *(Cell*)PFA1(cfa); |
|
} |
|
#ifdef NO_IP |
|
goto *next_code; |
|
#else |
|
NEXT_P0; |
|
NEXT; |
|
#endif |
|
|
|
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: |
|
|
|
*/ |
|
#ifdef NO_IP |
|
*--rp = next_code; |
|
IF_spTOS(spTOS = sp[0]); |
|
sp--; |
|
spTOS = (Cell)PFA(cfa); |
|
goto **(Label *)DOES_CODE1(cfa); |
|
#else |
|
{ |
|
/* fprintf(stderr, "Got CFA %08lx at doescode %08lx/%08lx: does: %08lx\n",cfa,(Cell)ip,(Cell)PFA(cfa),(Cell)DOES_CODE1(cfa));*/ |
|
#ifdef DEBUG |
|
fprintf(stderr,"%08lx/%08lx: does: %08lx\n",(Cell)ip,(Cell)PFA(cfa),(Cell)DOES_CODE1(cfa)); |
|
fflush(stderr); |
|
#endif |
|
*--rp = (Cell)ip; |
|
/* PFA1 might collide with DOES_CODE1 here, so we use PFA */ |
|
#ifdef USE_TOS |
|
*sp-- = spTOS; |
|
spTOS = (Cell)PFA(cfa); |
|
#else |
|
*--sp = (Cell)PFA(cfa); |
|
#endif |
|
SET_IP(DOES_CODE1(cfa)); |
|
SUPER_END; |
|
/* fprintf(stderr,"TOS = %08lx, IP=%08lx\n", spTOS, IP);*/ |
|
} |
|
NEXT; |
|
#endif |
|
|
|
#ifndef IN_ENGINE2 |
|
#define LABEL(name) I_##name: |
|
#else |
|
#define LABEL(name) J_##name: asm(".skip 16"); I_##name: |
|
#endif |
|
#define LABEL2(name) K_##name: |
|
#include "prim.i" |
|
#undef LABEL |
|
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 */ |
}' |
|
) |
|
|
|
#define VARIANT(v) (v) |
|
#define JUMP(target) goto I_noop |
|
|
|
Label *engine enginerest |
|
|
|
#ifndef NO_DYNAMIC |
|
|
|
#ifdef NO_IP |
|
#undef VARIANT |
|
#define VARIANT(v) ((v)^0xffffffff) |
|
#undef JUMP |
|
#define JUMP(target) goto K_lit |
|
Label *engine3 enginerest |
|
#endif |
|
|
|
#undef VARIANT |
return (Label *)0; |
#define VARIANT(v) (v) |
} |
#undef JUMP |
|
#define JUMP(target) goto I_noop |
|
#define IN_ENGINE2 |
|
Label *engine2 enginerest |
|
#endif |
|