version 1.2, 1994/04/20 17:12:00
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version 1.25, 1995/04/06 16:56:09
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/* |
/* |
$Id$ |
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Copyright 1992 by the ANSI figForth Development Group |
Copyright 1992 by the ANSI figForth Development Group |
*/ |
*/ |
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#include <assert.h> |
#include <assert.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <time.h> |
#include <time.h> |
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#include <sys/time.h> |
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#include <unistd.h> |
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#include <errno.h> |
#include "forth.h" |
#include "forth.h" |
#include "io.h" |
#include "io.h" |
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extern unlink(char *); |
#ifndef SEEK_SET |
extern ftruncate(int, int); |
/* should be defined in stdio.h, but some systems don't have it */ |
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#define SEEK_SET 0 |
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#endif |
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#define IOR(flag) ((flag)? -512-errno : 0) |
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typedef union { |
typedef union { |
struct { |
struct { |
#ifdef BIG_ENDIAN |
#ifdef WORDS_BIGENDIAN |
Cell high; |
Cell high; |
Cell low; |
Cell low; |
#else |
#else |
Line 43 typedef struct F83Name {
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Line 49 typedef struct F83Name {
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#define F83NAME_SMUDGE(np) (((np)->countetc & 0x40) != 0) |
#define F83NAME_SMUDGE(np) (((np)->countetc & 0x40) != 0) |
#define F83NAME_IMMEDIATE(np) (((np)->countetc & 0x20) != 0) |
#define F83NAME_IMMEDIATE(np) (((np)->countetc & 0x20) != 0) |
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/* NEXT and NEXT1 are split into several parts to help scheduling */ |
/* !!someone should organize this ifdef chaos */ |
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#if defined(LONG_LATENCY) |
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#if defined(AUTO_INCREMENT) |
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#define NEXT_P0 (cfa=*ip++) |
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#define IP (ip-1) |
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#else /* AUTO_INCREMENT */ |
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#define NEXT_P0 (cfa=*ip) |
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#define IP ip |
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#endif /* AUTO_INCREMENT */ |
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#define NEXT_INST (cfa) |
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#define INC_IP(const_inc) ({cfa=IP[const_inc]; ip+=(const_inc);}) |
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#else /* LONG_LATENCY */ |
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/* NEXT and NEXT1 are split into several parts to help scheduling, |
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unless CISC_NEXT is defined */ |
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#define NEXT_P0 |
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/* in order for execute to work correctly, NEXT_P0 (or other early |
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fetches) should not update the ip (or should we put |
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compensation-code into execute? */ |
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#define NEXT_INST (*ip) |
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/* the next instruction (or what is in its place, e.g., an immediate |
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argument */ |
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#define INC_IP(const_inc) (ip+=(const_inc)) |
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/* increment the ip by const_inc and perform NEXT_P0 (or prefetching) again */ |
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#define IP ip |
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/* the pointer to the next instruction (i.e., NEXT_INST could be |
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defined as *IP) */ |
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#endif /* LONG_LATENCY */ |
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#if defined(CISC_NEXT) && !defined(LONG_LATENCY) |
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#define NEXT1_P1 |
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#define NEXT_P1 |
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#define DEF_CA |
#ifdef DIRECT_THREADED |
#ifdef DIRECT_THREADED |
#define NEXT1_P1 |
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#define NEXT1_P2 ({goto *cfa;}) |
#define NEXT1_P2 ({goto *cfa;}) |
#else |
#else |
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#define NEXT1_P2 ({goto **cfa;}) |
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#endif /* DIRECT_THREADED */ |
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#define NEXT_P2 ({cfa = *ip++; NEXT1_P2;}) |
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#else /* defined(CISC_NEXT) && !defined(LONG_LATENCY) */ |
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#ifdef DIRECT_THREADED |
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#define NEXT1_P1 |
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#define NEXT1_P2 ({goto *cfa;}) |
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#define DEF_CA |
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#else /* DIRECT_THREADED */ |
#define NEXT1_P1 ({ca = *cfa;}) |
#define NEXT1_P1 ({ca = *cfa;}) |
#define NEXT1_P2 ({goto *ca;}) |
#define NEXT1_P2 ({goto *ca;}) |
#endif |
#define DEF_CA Label ca; |
#define NEXT_P1 ({cfa = *ip++; NEXT1_P1;}) |
#endif /* DIRECT_THREADED */ |
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#if defined(LONG_LATENCY) |
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#if defined(AUTO_INCREMENT) |
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#define NEXT_P1 NEXT1_P1 |
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#else /* AUTO_INCREMENT */ |
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#define NEXT_P1 ({ip++; NEXT1_P1;}) |
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#endif /* AUTO_INCREMENT */ |
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#else /* LONG_LATENCY */ |
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#define NEXT_P1 ({cfa=*ip++; NEXT1_P1;}) |
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#endif /* LONG_LATENCY */ |
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#define NEXT_P2 NEXT1_P2 |
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#endif /* defined(CISC_NEXT) && !defined(LONG_LATENCY) */ |
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#define NEXT1 ({NEXT1_P1; NEXT1_P2;}) |
#define NEXT1 ({DEF_CA NEXT1_P1; NEXT1_P2;}) |
#define NEXT ({NEXT_P1; NEXT1_P2;}) |
#define NEXT ({DEF_CA NEXT_P1; NEXT_P2;}) |
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#ifdef USE_TOS |
#ifdef USE_TOS |
#define IF_TOS(x) x |
#define IF_TOS(x) x |
Line 70 typedef struct F83Name {
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Line 126 typedef struct F83Name {
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#define FTOS (fp[0]) |
#define FTOS (fp[0]) |
#endif |
#endif |
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#define DODOES (symbols[3]) |
Cell *SP; |
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Float *FP; |
int emitcounter; |
int emitcounter; |
#define NULLC '\0' |
#define NULLC '\0' |
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#define cstr(to, from, size)\ |
char *cstr(Char *from, UCell size, int clear) |
{ memcpy(to, from, size);\ |
/* if clear is true, scratch can be reused, otherwise we want more of |
to[size]=NULLC;} |
the same */ |
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{ |
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static char *scratch=NULL; |
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static unsigned scratchsize=0; |
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static char *nextscratch; |
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char *oldnextscratch; |
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if (clear) |
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nextscratch=scratch; |
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if (scratch==NULL) { |
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scratch=malloc(size+1); |
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nextscratch=scratch; |
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scratchsize=size; |
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} |
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else if (nextscratch+size>scratch+scratchsize) { |
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char *oldscratch=scratch; |
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scratch = realloc(scratch, (nextscratch-scratch)+size+1); |
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nextscratch=scratch+(nextscratch-oldscratch); |
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scratchsize=size; |
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} |
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memcpy(nextscratch,from,size); |
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nextscratch[size]='\0'; |
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oldnextscratch = nextscratch; |
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nextscratch += size+1; |
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return oldnextscratch; |
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} |
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#define NEWLINE '\n' |
#define NEWLINE '\n' |
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#ifndef HAVE_RINT |
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#define rint(x) floor((x)+0.5) |
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#endif |
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static char* fileattr[6]={"r","rb","r+","r+b","w+","w+b"}; |
static char* fileattr[6]={"r","rb","r+","r+b","w+","w+b"}; |
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Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp) |
static Address up0=NULL; |
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/* if machine.h has not defined explicit registers, define them as implicit */ |
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#ifndef IPREG |
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#define IPREG |
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#endif |
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#ifndef SPREG |
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#define SPREG |
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#endif |
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#ifndef RPREG |
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#define RPREG |
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#endif |
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#ifndef FPREG |
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#define FPREG |
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#endif |
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#ifndef LPREG |
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#define LPREG |
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#endif |
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#ifndef CFAREG |
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#define CFAREG |
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#endif |
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#ifndef UPREG |
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#define UPREG |
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#endif |
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#ifndef TOSREG |
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#define TOSREG |
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#endif |
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#ifndef FTOSREG |
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#define FTOSREG |
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#endif |
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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 |
This is very preliminary, as the bootstrap architecture is not yet decided |
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*/ |
*/ |
{ |
{ |
Xt cfa; |
register Xt *ip IPREG = ip0; |
Address lp=NULL; |
register Cell *sp SPREG = sp0; |
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register Cell *rp RPREG = rp0; |
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register Float *fp FPREG = fp0; |
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register Address lp LPREG = lp0; |
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register Xt cfa CFAREG; |
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register Address up UPREG = up0; |
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IF_TOS(register Cell TOS TOSREG;) |
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IF_FTOS(register Float FTOS FTOSREG;) |
static Label symbols[]= { |
static Label symbols[]= { |
&&docol, |
&&docol, |
&&docon, |
&&docon, |
&&dovar, |
&&dovar, |
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&&douser, |
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&&dodefer, |
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&&dostruc, |
&&dodoes, |
&&dodoes, |
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&&dodoes, /* dummy for does handler address */ |
#include "prim_labels.i" |
#include "prim_labels.i" |
}; |
}; |
#ifndef DIRECT_THREADED |
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Label ca; |
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#endif |
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IF_TOS(register Cell TOS;) |
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IF_FTOS(Float FTOS;) |
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#ifdef CPU_DEP |
#ifdef CPU_DEP |
CPU_DEP; |
CPU_DEP; |
#endif |
#endif |
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#ifdef DEBUG |
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fprintf(stderr,"ip=%x, sp=%x, rp=%x, fp=%x, lp=%x, up=%x\n", |
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(unsigned)ip,(unsigned)sp,(unsigned)rp, |
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(unsigned)fp,(unsigned)lp,(unsigned)up); |
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#endif |
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if (ip == NULL) |
if (ip == NULL) |
return symbols; |
return symbols; |
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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(); |
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NEXT_P0; |
NEXT; |
NEXT; |
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docol: |
docol: |
#ifdef DEBUG |
#ifdef DEBUG |
printf("col: %x\n",(Cell)PFA1(cfa)); |
fprintf(stderr,"%08x: col: %08x\n",(Cell)ip,(Cell)PFA1(cfa)); |
#endif |
#endif |
#ifdef undefined |
#ifdef CISC_NEXT |
/* this is the simple version */ |
/* this is the simple version */ |
*--rp = (Cell)ip; |
*--rp = (Cell)ip; |
ip = (Xt *)PFA1(cfa); |
ip = (Xt *)PFA1(cfa); |
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NEXT_P0; |
NEXT; |
NEXT; |
#endif |
#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 |
The following version may be better (for scheduling), but probably has |
problems with code fields employing calls and delay slots |
problems with code fields employing calls and delay slots |
*/ |
*/ |
{ |
{ |
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DEF_CA |
Xt *current_ip = (Xt *)PFA1(cfa); |
Xt *current_ip = (Xt *)PFA1(cfa); |
cfa = *current_ip; |
cfa = *current_ip; |
NEXT1_P1; |
NEXT1_P1; |
*--rp = (Cell)ip; |
*--rp = (Cell)ip; |
ip = current_ip+1; |
ip = current_ip+1; |
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NEXT1_P2; |
} |
} |
NEXT1_P2; |
#endif |
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docon: |
docon: |
#ifdef DEBUG |
#ifdef DEBUG |
printf("con: %x\n",*(Cell*)PFA1(cfa)); |
fprintf(stderr,"%08x: con: %08x\n",(Cell)ip,*(Cell*)PFA1(cfa)); |
#endif |
#endif |
#ifdef USE_TOS |
#ifdef USE_TOS |
*sp-- = TOS; |
*sp-- = TOS; |
Line 147 Label *engine(Xt *ip, Cell *sp, Cell *rp
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Line 279 Label *engine(Xt *ip, Cell *sp, Cell *rp
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#else |
#else |
*--sp = *(Cell *)PFA1(cfa); |
*--sp = *(Cell *)PFA1(cfa); |
#endif |
#endif |
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NEXT_P0; |
NEXT; |
NEXT; |
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dovar: |
dovar: |
#ifdef DEBUG |
#ifdef DEBUG |
printf("var: %x\n",(Cell)PFA1(cfa)); |
fprintf(stderr,"%08x: var: %08x\n",(Cell)ip,(Cell)PFA1(cfa)); |
#endif |
#endif |
#ifdef USE_TOS |
#ifdef USE_TOS |
*sp-- = TOS; |
*sp-- = TOS; |
Line 159 Label *engine(Xt *ip, Cell *sp, Cell *rp
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Line 292 Label *engine(Xt *ip, Cell *sp, Cell *rp
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#else |
#else |
*--sp = (Cell)PFA1(cfa); |
*--sp = (Cell)PFA1(cfa); |
#endif |
#endif |
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NEXT_P0; |
NEXT; |
NEXT; |
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/* !! user? */ |
douser: |
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#ifdef DEBUG |
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fprintf(stderr,"%08x: user: %08x\n",(Cell)ip,(Cell)PFA1(cfa)); |
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#endif |
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#ifdef USE_TOS |
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*sp-- = TOS; |
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TOS = (Cell)(up+*(Cell*)PFA1(cfa)); |
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#else |
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*--sp = (Cell)(up+*(Cell*)PFA1(cfa)); |
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#endif |
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NEXT_P0; |
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NEXT; |
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dodefer: |
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#ifdef DEBUG |
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fprintf(stderr,"%08x: defer: %08x\n",(Cell)ip,(Cell)PFA1(cfa)); |
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#endif |
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cfa = *(Xt *)PFA1(cfa); |
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NEXT1; |
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dostruc: |
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#ifdef DEBUG |
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fprintf(stderr,"%08x: struc: %08x\n",(Cell)ip,(Cell)PFA1(cfa)); |
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#endif |
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TOS += *(Cell*)PFA1(cfa); |
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NEXT_P0; |
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NEXT; |
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dodoes: |
dodoes: |
/* this assumes the following structure: |
/* this assumes the following structure: |
defining-word: |
defining-word: |
Line 182 Label *engine(Xt *ip, Cell *sp, Cell *rp
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Line 342 Label *engine(Xt *ip, Cell *sp, Cell *rp
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*/ |
*/ |
#ifdef DEBUG |
#ifdef DEBUG |
printf("does: %x\n",(Cell)PFA(cfa)); |
fprintf(stderr,"%08x/%08x: does: %08x\n",(Cell)ip,(Cell)PFA(cfa),(Cell)DOES_CODE1(cfa)); |
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fflush(stderr); |
#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 */ |
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ip = DOES_CODE1(cfa); |
#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 |
ip = DOES_CODE1(cfa); |
NEXT_P0; |
NEXT; |
NEXT; |
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#include "primitives.i" |
#include "primitives.i" |
} |
} |