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BSD 4_1c_2 release
[unix-history] / usr / src / ucb / pascal / px / interp.c
/* Copyright (c) 1979 Regents of the University of California */
static char sccsid[] = "@(#)interp.c 1.30 2/9/83";
#include <math.h>
#include <signal.h>
#include "whoami.h"
#include "vars.h"
#include "objfmt.h"
#include "h02opcs.h"
#include "machdep.h"
#include "libpc.h"
/*
* program variables
*/
union display _display;
struct dispsave *_dp;
long _lino = 0;
int _argc;
char **_argv;
long _mode;
long _runtst = (long)TRUE;
bool _nodump = FALSE;
long _stlim = 500000;
long _stcnt = 0;
long _seed = 1;
#ifdef ADDR32
char *_minptr = (char *)0x7fffffff;
#endif ADDR32
#ifdef ADDR16
char *_minptr = (char *)0xffff;
#endif ADDR16
char *_maxptr = (char *)0;
long *_pcpcount = (long *)0;
long _cntrs = 0;
long _rtns = 0;
/*
* standard files
*/
char _inwin, _outwin, _errwin;
struct iorechd _err = {
&_errwin, /* fileptr */
0, /* lcount */
0x7fffffff, /* llimit */
&_iob[2], /* fbuf */
FILNIL, /* fchain */
STDLVL, /* flev */
"Message file", /* pfname */
FTEXT | FWRITE | EOFF, /* funit */
2, /* fblk */
1 /* fsize */
};
struct iorechd output = {
&_outwin, /* fileptr */
0, /* lcount */
0x7fffffff, /* llimit */
&_iob[1], /* fbuf */
ERR, /* fchain */
STDLVL, /* flev */
"standard output", /* pfname */
FTEXT | FWRITE | EOFF, /* funit */
1, /* fblk */
1 /* fsize */
};
struct iorechd input = {
&_inwin, /* fileptr */
0, /* lcount */
0x7fffffff, /* llimit */
&_iob[0], /* fbuf */
OUTPUT, /* fchain */
STDLVL, /* flev */
"standard input", /* pfname */
FTEXT|FREAD|SYNC|EOLN, /* funit */
0, /* fblk */
1 /* fsize */
};
/*
* file record variables
*/
long _filefre = PREDEF;
struct iorechd _fchain = {
0, 0, 0, 0, /* only use fchain field */
INPUT /* fchain */
};
struct iorec *_actfile[MAXFILES] = {
INPUT,
OUTPUT,
ERR
};
/*
* stuff for pdx
*/
union progcntr *pcaddrp;
asm(".globl _loopaddr");
/*
* Px profile array
*/
#ifdef PROFILE
long _profcnts[NUMOPS];
#endif PROFILE
/*
* debugging variables
*/
#ifdef DEBUG
char opc[10];
long opcptr = 9;
#endif DEBUG
\f
interpreter(base)
char *base;
{
union progcntr pc; /* interpreted program cntr */
register char *vpc; /* register used for "pc" */
struct iorec *curfile; /* active file */
register struct blockmark *stp; /* active stack frame ptr */
/*
* the following variables are used as scratch
*/
register char *tcp;
register short *tsp;
register long tl, tl1, tl2;
double td, td1;
struct sze8 t8;
register short *tsp1;
long *tlp;
char *tcp1;
bool tb;
struct blockmark *tstp;
register struct formalrtn *tfp;
union progcntr tpc;
struct iorec **ip;
int mypid;
pcaddrp = &pc;
mypid = getpid();
/*
* Setup sets up any hardware specific parameters before
* starting the interpreter. Typically this is inline replaced
* by interp.sed to utilize specific machine instructions.
*/
setup();
/*
* necessary only on systems which do not initialize
* memory to zero
*/
for (ip = &_actfile[3]; ip < &_actfile[MAXFILES]; *ip++ = FILNIL)
/* void */;
/*
* set up global environment, then ``call'' the main program
*/
_display.frame[0].locvars = pushsp((long)(2 * sizeof(struct iorec *)));
_display.frame[0].locvars += 2 * sizeof(struct iorec *);
*(struct iorec **)(_display.frame[0].locvars + OUTPUT_OFF) = OUTPUT;
*(struct iorec **)(_display.frame[0].locvars + INPUT_OFF) = INPUT;
stp = (struct blockmark *)pushsp((long)(sizeof(struct blockmark)));
_dp = &_display.frame[0];
pc.cp = base;
asm("_loopaddr:");
for(;;) {
# ifdef DEBUG
if (++opcptr == 10)
opcptr = 0;
opc[opcptr] = *pc.ucp;
# endif DEBUG
# ifdef PROFILE
_profcnts[*pc.ucp]++;
# endif PROFILE
switch (*pc.ucp++) {
case O_BPT: /* breakpoint trap */
PFLUSH();
kill(mypid, SIGILL);
pc.ucp--;
continue;
case O_NODUMP:
_nodump = TRUE;
/* and fall through */
case O_BEG:
_dp += 1; /* enter local scope */
stp->odisp = *_dp; /* save old display value */
tl = *pc.ucp++; /* tl = name size */
stp->entry = pc.hdrp; /* pointer to entry info */
tl1 = pc.hdrp->framesze;/* tl1 = size of frame */
_lino = pc.hdrp->offset;
_runtst = pc.hdrp->tests;
disableovrflo();
if (_runtst)
enableovrflo();
pc.cp += (int)tl; /* skip over proc hdr info */
stp->file = curfile; /* save active file */
tcp = pushsp(tl1); /* tcp = new top of stack */
if (_runtst) /* zero stack frame */
blkclr(tcp, tl1);
tcp += (int)tl1; /* offsets of locals are neg */
_dp->locvars = tcp; /* set new display pointer */
_dp->stp = stp;
stp->tos = pushsp((long)0); /* set tos pointer */
continue;
case O_END:
PCLOSE(_dp->locvars); /* flush & close local files */
stp = _dp->stp;
curfile = stp->file; /* restore old active file */
*_dp = stp->odisp; /* restore old display entry */
if (_dp == &_display.frame[1])
return; /* exiting main proc ??? */
_lino = stp->lino; /* restore lino, pc, dp */
pc.cp = stp->pc;
_dp = stp->dp;
_runtst = stp->entry->tests;
disableovrflo();
if (_runtst)
enableovrflo();
popsp(stp->entry->framesze + /* pop local vars */
sizeof(struct blockmark) + /* pop stack frame */
stp->entry->nargs); /* pop parms */
continue;
case O_CALL:
tl = *pc.cp++;
tcp = base + *pc.lp++;/* calc new entry point */
tcp += sizeof(short);
tcp = base + *(long *)tcp;
stp = (struct blockmark *)
pushsp((long)(sizeof(struct blockmark)));
stp->lino = _lino; /* save lino, pc, dp */
stp->pc = pc.cp;
stp->dp = _dp;
_dp = &_display.frame[tl]; /* set up new display ptr */
pc.cp = tcp;
continue;
case O_FCALL:
pc.cp++;
tcp = popaddr(); /* ptr to display save area */
tfp = (struct formalrtn *)popaddr();
stp = (struct blockmark *)
pushsp((long)(sizeof(struct blockmark)));
stp->lino = _lino; /* save lino, pc, dp */
stp->pc = pc.cp;
stp->dp = _dp;
pc.cp = (char *)(tfp->fentryaddr);/* new entry point */
_dp = &_display.frame[tfp->fbn];/* new display ptr */
blkcpy(&_display.frame[1], tcp,
tfp->fbn * sizeof(struct dispsave));
blkcpy(&tfp->fdisp[0], &_display.frame[1],
tfp->fbn * sizeof(struct dispsave));
continue;
case O_FRTN:
tl = *pc.cp++; /* tl = size of return obj */
if (tl == 0)
tl = *pc.usp++;
tcp = pushsp((long)(0));
tfp = *(struct formalrtn **)(tcp + tl);
tcp1 = *(char **)
(tcp + tl + sizeof(struct formalrtn *));
if (tl != 0) {
blkcpy(tcp, tcp + sizeof(struct formalrtn *)
+ sizeof(char *), tl);
}
popsp((long)
(sizeof(struct formalrtn *) + sizeof (char *)));
blkcpy(tcp1, &_display.frame[1],
tfp->fbn * sizeof(struct dispsave));
continue;
case O_FSAV:
tfp = (struct formalrtn *)popaddr();
tfp->fbn = *pc.cp++; /* blk number of routine */
tcp = base + *pc.lp++; /* calc new entry point */
tcp += sizeof(short);
tfp->fentryaddr = (long (*)())(base + *(long *)tcp);
blkcpy(&_display.frame[1], &tfp->fdisp[0],
tfp->fbn * sizeof(struct dispsave));
pushaddr(tfp);
continue;
case O_SDUP2:
pc.cp++;
tl = pop2();
push2((short)(tl));
push2((short)(tl));
continue;
case O_SDUP4:
pc.cp++;
tl = pop4();
push4(tl);
push4(tl);
continue;
case O_TRA:
pc.cp++;
pc.cp += *pc.sp;
continue;
case O_TRA4:
pc.cp++;
pc.cp = base + *pc.lp;
continue;
case O_GOTO:
tstp = _display.frame[*pc.cp++].stp; /* ptr to
exit frame */
pc.cp = base + *pc.lp;
stp = _dp->stp;
while (tstp != stp) {
if (_dp == &_display.frame[1])
ERROR("Active frame not found in non-local goto\n", 0); /* exiting prog ??? */
PCLOSE(_dp->locvars); /* close local files */
curfile = stp->file; /* restore active file */
*_dp = stp->odisp; /* old display entry */
_dp = stp->dp; /* restore dp */
stp = _dp->stp;
}
/* pop locals, stack frame, parms, and return values */
popsp((long)(stp->tos - pushsp((long)(0))));
continue;
case O_LINO:
if (_dp->stp->tos != pushsp((long)(0)))
ERROR("Panic: stack not empty between statements\n");
_lino = *pc.cp++; /* set line number */
if (_lino == 0)
_lino = *pc.sp++;
if (_runtst) {
LINO(); /* inc statement count */
continue;
}
_stcnt++;
continue;
case O_PUSH:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.lp++;
tl = (-tl + 1) & ~1;
tcp = pushsp(tl);
if (_runtst)
blkclr(tcp, tl);
continue;
case O_IF:
pc.cp++;
if (pop2()) {
pc.sp++;
continue;
}
pc.cp += *pc.sp;
continue;
case O_REL2:
tl = pop2();
tl1 = pop2();
goto cmplong;
case O_REL24:
tl = pop2();
tl1 = pop4();
goto cmplong;
case O_REL42:
tl = pop4();
tl1 = pop2();
goto cmplong;
case O_REL4:
tl = pop4();
tl1 = pop4();
cmplong:
switch (*pc.cp++) {
case releq:
push2(tl1 == tl);
continue;
case relne:
push2(tl1 != tl);
continue;
case rellt:
push2(tl1 < tl);
continue;
case relgt:
push2(tl1 > tl);
continue;
case relle:
push2(tl1 <= tl);
continue;
case relge:
push2(tl1 >= tl);
continue;
default:
ERROR("Panic: bad relation %d to REL4*\n",
*(pc.cp - 1));
continue;
}
case O_RELG:
tl2 = *pc.cp++; /* tc has jump opcode */
tl = *pc.usp++; /* tl has comparison length */
tl1 = (tl + 1) & ~1; /* tl1 has arg stack length */
tcp = pushsp((long)(0));/* tcp pts to first arg */
switch (tl2) {
case releq:
tb = RELEQ(tl, tcp + tl1, tcp);
break;
case relne:
tb = RELNE(tl, tcp + tl1, tcp);
break;
case rellt:
tb = RELSLT(tl, tcp + tl1, tcp);
break;
case relgt:
tb = RELSGT(tl, tcp + tl1, tcp);
break;
case relle:
tb = RELSLE(tl, tcp + tl1, tcp);
break;
case relge:
tb = RELSGE(tl, tcp + tl1, tcp);
break;
default:
ERROR("Panic: bad relation %d to RELG*\n", tl2);
break;
}
popsp(tl1 << 1);
push2((short)(tb));
continue;
case O_RELT:
tl2 = *pc.cp++; /* tc has jump opcode */
tl1 = *pc.usp++; /* tl1 has comparison length */
tcp = pushsp((long)(0));/* tcp pts to first arg */
switch (tl2) {
case releq:
tb = RELEQ(tl1, tcp + tl1, tcp);
break;
case relne:
tb = RELNE(tl1, tcp + tl1, tcp);
break;
case rellt:
tb = RELTLT(tl1, tcp + tl1, tcp);
break;
case relgt:
tb = RELTGT(tl1, tcp + tl1, tcp);
break;
case relle:
tb = RELTLE(tl1, tcp + tl1, tcp);
break;
case relge:
tb = RELTGE(tl1, tcp + tl1, tcp);
break;
default:
ERROR("Panic: bad relation %d to RELT*\n", tl2);
break;
}
popsp(tl1 << 1);
push2((short)(tb));
continue;
case O_REL28:
td = pop2();
td1 = pop8();
goto cmpdbl;
case O_REL48:
td = pop4();
td1 = pop8();
goto cmpdbl;
case O_REL82:
td = pop8();
td1 = pop2();
goto cmpdbl;
case O_REL84:
td = pop8();
td1 = pop4();
goto cmpdbl;
case O_REL8:
td = pop8();
td1 = pop8();
cmpdbl:
switch (*pc.cp++) {
case releq:
push2(td1 == td);
continue;
case relne:
push2(td1 != td);
continue;
case rellt:
push2(td1 < td);
continue;
case relgt:
push2(td1 > td);
continue;
case relle:
push2(td1 <= td);
continue;
case relge:
push2(td1 >= td);
continue;
default:
ERROR("Panic: bad relation %d to REL8*\n",
*(pc.cp - 1));
continue;
}
case O_AND:
pc.cp++;
tl = pop2();
tl1 = pop2();
push2(tl1 & tl);
continue;
case O_OR:
pc.cp++;
tl = pop2();
tl1 = pop2();
push2(tl1 | tl);
continue;
case O_NOT:
pc.cp++;
tl = pop2();
push2(tl ^ 1);
continue;
case O_AS2:
pc.cp++;
tl = pop2();
*(short *)popaddr() = tl;
continue;
case O_AS4:
pc.cp++;
tl = pop4();
*(long *)popaddr() = tl;
continue;
case O_AS24:
pc.cp++;
tl = pop2();
*(long *)popaddr() = tl;
continue;
case O_AS42:
pc.cp++;
tl = pop4();
*(short *)popaddr() = tl;
continue;
case O_AS21:
pc.cp++;
tl = pop2();
*popaddr() = tl;
continue;
case O_AS41:
pc.cp++;
tl = pop4();
*popaddr() = tl;
continue;
case O_AS28:
pc.cp++;
tl = pop2();
*(double *)popaddr() = tl;
continue;
case O_AS48:
pc.cp++;
tl = pop4();
*(double *)popaddr() = tl;
continue;
case O_AS8:
pc.cp++;
t8 = popsze8();
*(struct sze8 *)popaddr() = t8;
continue;
case O_AS:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.usp++;
tl1 = (tl + 1) & ~1;
tcp = pushsp((long)(0));
blkcpy(tcp, *(char **)(tcp + tl1), tl);
popsp(tl1 + sizeof(char *));
continue;
case O_INX2P2:
tl = *pc.cp++; /* tl has shift amount */
tl1 = pop2();
tl1 = (tl1 - *pc.sp++) << tl;
tcp = popaddr();
pushaddr(tcp + tl1);
continue;
case O_INX4P2:
tl = *pc.cp++; /* tl has shift amount */
tl1 = pop4();
tl1 = (tl1 - *pc.sp++) << tl;
tcp = popaddr();
pushaddr(tcp + tl1);
continue;
case O_INX2:
tl = *pc.cp++; /* tl has element size */
if (tl == 0)
tl = *pc.usp++;
tl1 = pop2(); /* index */
tl2 = *pc.sp++;
tcp = popaddr();
pushaddr(tcp + (tl1 - tl2) * tl);
tl = *pc.usp++;
if (_runtst)
SUBSC(tl1, tl2, tl); /* range check */
continue;
case O_INX4:
tl = *pc.cp++; /* tl has element size */
if (tl == 0)
tl = *pc.usp++;
tl1 = pop4(); /* index */
tl2 = *pc.sp++;
tcp = popaddr();
pushaddr(tcp + (tl1 - tl2) * tl);
tl = *pc.usp++;
if (_runtst)
SUBSC(tl1, tl2, tl); /* range check */
continue;
case O_OFF:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.usp++;
tcp = popaddr();
pushaddr(tcp + tl);
continue;
case O_NIL:
pc.cp++;
NIL();
continue;
case O_ADD2:
pc.cp++;
tl = pop2();
tl1 = pop2();
push4(tl1 + tl);
continue;
case O_ADD4:
pc.cp++;
tl = pop4();
tl1 = pop4();
push4(tl1 + tl);
continue;
case O_ADD24:
pc.cp++;
tl = pop2();
tl1 = pop4();
push4(tl1 + tl);
continue;
case O_ADD42:
pc.cp++;
tl = pop4();
tl1 = pop2();
push4(tl1 + tl);
continue;
case O_ADD28:
pc.cp++;
tl = pop2();
td = pop8();
push8(td + tl);
continue;
case O_ADD48:
pc.cp++;
tl = pop4();
td = pop8();
push8(td + tl);
continue;
case O_ADD82:
pc.cp++;
td = pop8();
td1 = pop2();
push8(td1 + td);
continue;
case O_ADD84:
pc.cp++;
td = pop8();
td1 = pop4();
push8(td1 + td);
continue;
case O_SUB2:
pc.cp++;
tl = pop2();
tl1 = pop2();
push4(tl1 - tl);
continue;
case O_SUB4:
pc.cp++;
tl = pop4();
tl1 = pop4();
push4(tl1 - tl);
continue;
case O_SUB24:
pc.cp++;
tl = pop2();
tl1 = pop4();
push4(tl1 - tl);
continue;
case O_SUB42:
pc.cp++;
tl = pop4();
tl1 = pop2();
push4(tl1 - tl);
continue;
case O_SUB28:
pc.cp++;
tl = pop2();
td = pop8();
push8(td - tl);
continue;
case O_SUB48:
pc.cp++;
tl = pop4();
td = pop8();
push8(td - tl);
continue;
case O_SUB82:
pc.cp++;
td = pop8();
td1 = pop2();
push8(td1 - td);
continue;
case O_SUB84:
pc.cp++;
td = pop8();
td1 = pop4();
push8(td1 - td);
continue;
case O_MUL2:
pc.cp++;
tl = pop2();
tl1 = pop2();
push4(tl1 * tl);
continue;
case O_MUL4:
pc.cp++;
tl = pop4();
tl1 = pop4();
push4(tl1 * tl);
continue;
case O_MUL24:
pc.cp++;
tl = pop2();
tl1 = pop4();
push4(tl1 * tl);
continue;
case O_MUL42:
pc.cp++;
tl = pop4();
tl1 = pop2();
push4(tl1 * tl);
continue;
case O_MUL28:
pc.cp++;
tl = pop2();
td = pop8();
push8(td * tl);
continue;
case O_MUL48:
pc.cp++;
tl = pop4();
td = pop8();
push8(td * tl);
continue;
case O_MUL82:
pc.cp++;
td = pop8();
td1 = pop2();
push8(td1 * td);
continue;
case O_MUL84:
pc.cp++;
td = pop8();
td1 = pop4();
push8(td1 * td);
continue;
case O_ABS2:
case O_ABS4:
pc.cp++;
tl = pop4();
push4(tl >= 0 ? tl : -tl);
continue;
case O_ABS8:
pc.cp++;
td = pop8();
push8(td >= 0.0 ? td : -td);
continue;
case O_NEG2:
pc.cp++;
push4((long)(-pop2()));
continue;
case O_NEG4:
pc.cp++;
push4(-pop4());
continue;
case O_NEG8:
pc.cp++;
push8(-pop8());
continue;
case O_DIV2:
pc.cp++;
tl = pop2();
tl1 = pop2();
push4(tl1 / tl);
continue;
case O_DIV4:
pc.cp++;
tl = pop4();
tl1 = pop4();
push4(tl1 / tl);
continue;
case O_DIV24:
pc.cp++;
tl = pop2();
tl1 = pop4();
push4(tl1 / tl);
continue;
case O_DIV42:
pc.cp++;
tl = pop4();
tl1 = pop2();
push4(tl1 / tl);
continue;
case O_MOD2:
pc.cp++;
tl = pop2();
tl1 = pop2();
push4(tl1 % tl);
continue;
case O_MOD4:
pc.cp++;
tl = pop4();
tl1 = pop4();
push4(tl1 % tl);
continue;
case O_MOD24:
pc.cp++;
tl = pop2();
tl1 = pop4();
push4(tl1 % tl);
continue;
case O_MOD42:
pc.cp++;
tl = pop4();
tl1 = pop2();
push4(tl1 % tl);
continue;
case O_ADD8:
pc.cp++;
td = pop8();
td1 = pop8();
push8(td1 + td);
continue;
case O_SUB8:
pc.cp++;
td = pop8();
td1 = pop8();
push8(td1 - td);
continue;
case O_MUL8:
pc.cp++;
td = pop8();
td1 = pop8();
push8(td1 * td);
continue;
case O_DVD8:
pc.cp++;
td = pop8();
td1 = pop8();
push8(td1 / td);
continue;
case O_STOI:
pc.cp++;
push4((long)(pop2()));
continue;
case O_STOD:
pc.cp++;
td = pop2();
push8(td);
continue;
case O_ITOD:
pc.cp++;
td = pop4();
push8(td);
continue;
case O_ITOS:
pc.cp++;
push2((short)(pop4()));
continue;
case O_DVD2:
pc.cp++;
td = pop2();
td1 = pop2();
push8(td1 / td);
continue;
case O_DVD4:
pc.cp++;
td = pop4();
td1 = pop4();
push8(td1 / td);
continue;
case O_DVD24:
pc.cp++;
td = pop2();
td1 = pop4();
push8(td1 / td);
continue;
case O_DVD42:
pc.cp++;
td = pop4();
td1 = pop2();
push8(td1 / td);
continue;
case O_DVD28:
pc.cp++;
td = pop2();
td1 = pop8();
push8(td1 / td);
continue;
case O_DVD48:
pc.cp++;
td = pop4();
td1 = pop8();
push8(td1 / td);
continue;
case O_DVD82:
pc.cp++;
td = pop8();
td1 = pop2();
push8(td1 / td);
continue;
case O_DVD84:
pc.cp++;
td = pop8();
td1 = pop4();
push8(td1 / td);
continue;
case O_RV1:
tcp = _display.raw[*pc.ucp++];
push2((short)(*(tcp + *pc.sp++)));
continue;
case O_RV14:
tcp = _display.raw[*pc.ucp++];
push4((long)(*(tcp + *pc.sp++)));
continue;
case O_RV2:
tcp = _display.raw[*pc.ucp++];
push2(*(short *)(tcp + *pc.sp++));
continue;
case O_RV24:
tcp = _display.raw[*pc.ucp++];
push4((long)(*(short *)(tcp + *pc.sp++)));
continue;
case O_RV4:
tcp = _display.raw[*pc.ucp++];
push4(*(long *)(tcp + *pc.sp++));
continue;
case O_RV8:
tcp = _display.raw[*pc.ucp++];
pushsze8(*(struct sze8 *)(tcp + *pc.sp++));
continue;
case O_RV:
tcp = _display.raw[*pc.ucp++];
tcp += *pc.sp++;
tl = *pc.usp++;
tcp1 = pushsp((tl + 1) & ~1);
blkcpy(tcp, tcp1, tl);
continue;
case O_LV:
tcp = _display.raw[*pc.ucp++];
pushaddr(tcp + *pc.sp++);
continue;
case O_LRV1:
tcp = _display.raw[*pc.ucp++];
push2((short)(*(tcp + *pc.lp++)));
continue;
case O_LRV14:
tcp = _display.raw[*pc.ucp++];
push4((long)(*(tcp + *pc.lp++)));
continue;
case O_LRV2:
tcp = _display.raw[*pc.ucp++];
push2(*(short *)(tcp + *pc.lp++));
continue;
case O_LRV24:
tcp = _display.raw[*pc.ucp++];
push4((long)(*(short *)(tcp + *pc.lp++)));
continue;
case O_LRV4:
tcp = _display.raw[*pc.ucp++];
push4(*(long *)(tcp + *pc.lp++));
continue;
case O_LRV8:
tcp = _display.raw[*pc.ucp++];
pushsze8(*(struct sze8 *)(tcp + *pc.lp++));
continue;
case O_LRV:
tcp = _display.raw[*pc.ucp++];
tcp += (int)*pc.lp++;
tl = *pc.usp++;
tcp1 = pushsp((tl + 1) & ~1);
blkcpy(tcp, tcp1, tl);
continue;
case O_LLV:
tcp = _display.raw[*pc.ucp++];
pushaddr(tcp + *pc.lp++);
continue;
case O_IND1:
pc.cp++;
push2((short)(*popaddr()));
continue;
case O_IND14:
pc.cp++;
push4((long)(*popaddr()));
continue;
case O_IND2:
pc.cp++;
push2(*(short *)(popaddr()));
continue;
case O_IND24:
pc.cp++;
push4((long)(*(short *)(popaddr())));
continue;
case O_IND4:
pc.cp++;
push4(*(long *)(popaddr()));
continue;
case O_IND8:
pc.cp++;
pushsze8(*(struct sze8 *)(popaddr()));
continue;
case O_IND:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.usp++;
tcp = popaddr();
tcp1 = pushsp((tl + 1) & ~1);
blkcpy(tcp, tcp1, tl);
continue;
case O_CON1:
push2((short)(*pc.cp++));
continue;
case O_CON14:
push4((long)(*pc.cp++));
continue;
case O_CON2:
pc.cp++;
push2(*pc.sp++);
continue;
case O_CON24:
pc.cp++;
push4((long)(*pc.sp++));
continue;
case O_CON4:
pc.cp++;
push4(*pc.lp++);
continue;
case O_CON8:
pc.cp++;
push8(*pc.dbp++);
continue;
case O_CON:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.usp++;
tl = (tl + 1) & ~1;
tcp = pushsp(tl);
blkcpy(pc.cp, tcp, tl);
pc.cp += (int)tl;
continue;
case O_CONG:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.usp++;
tl1 = (tl + 1) & ~1;
tcp = pushsp(tl1);
blkcpy(pc.cp, tcp, tl1);
pc.cp += (int)((tl + 2) & ~1);
continue;
case O_LVCON:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.usp++;
tl = (tl + 1) & ~1;
pushaddr(pc.cp);
pc.cp += (int)tl;
continue;
case O_RANG2:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.sp++;
tl1 = pop2();
push2((short)(RANG4(tl1, tl, (long)(*pc.sp++))));
continue;
case O_RANG42:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.sp++;
tl1 = pop4();
push4(RANG4(tl1, tl, (long)(*pc.sp++)));
continue;
case O_RSNG2:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.sp++;
tl1 = pop2();
push2((short)(RSNG4(tl1, tl)));
continue;
case O_RSNG42:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.sp++;
tl1 = pop4();
push4(RSNG4(tl1, tl));
continue;
case O_RANG4:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.lp++;
tl1 = pop4();
push4(RANG4(tl1, tl, *pc.lp++));
continue;
case O_RANG24:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.lp++;
tl1 = pop2();
push2((short)(RANG4(tl1, tl, *pc.lp++)));
continue;
case O_RSNG4:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.lp++;
tl1 = pop4();
push4(RSNG4(tl1, tl));
continue;
case O_RSNG24:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.lp++;
tl1 = pop2();
push2((short)(RSNG4(tl1, tl)));
continue;
case O_STLIM:
pc.cp++;
STLIM();
popsp((long)(sizeof(long)));
continue;
case O_LLIMIT:
pc.cp++;
LLIMIT();
popsp((long)(sizeof(char *)+sizeof(long)));
continue;
case O_BUFF:
BUFF((long)(*pc.cp++));
continue;
case O_HALT:
pc.cp++;
if (_nodump == TRUE)
psexit(0);
fputs("\nCall to procedure halt\n", stderr);
backtrace("Halted");
psexit(0);
continue;
case O_PXPBUF:
pc.cp++;
_cntrs = *pc.lp++;
_rtns = *pc.lp++;
NEW(&_pcpcount, (_cntrs + 1) * sizeof(long));
blkclr(_pcpcount, (_cntrs + 1) * sizeof(long));
continue;
case O_COUNT:
pc.cp++;
_pcpcount[*pc.usp++]++;
continue;
case O_CASE1OP:
tl = *pc.cp++; /* tl = number of cases */
if (tl == 0)
tl = *pc.usp++;
tsp = pc.sp + tl; /* ptr to end of jump table */
tcp = (char *)tsp; /* tcp = ptr to case values */
tl1 = pop2(); /* tl1 = element to find */
for(; tl > 0; tl--) /* look for element */
if (tl1 == *tcp++)
break;
if (tl == 0) /* default case => error */
CASERNG(tl1);
pc.cp += *(tsp - tl);
continue;
case O_CASE2OP:
tl = *pc.cp++; /* tl = number of cases */
if (tl == 0)
tl = *pc.usp++;
tsp = pc.sp + tl; /* ptr to end of jump table */
tsp1 = tsp; /* tsp1 = ptr to case values */
tl1 = (unsigned short)pop2();/* tl1 = element to find */
for(; tl > 0; tl--) /* look for element */
if (tl1 == *tsp1++)
break;
if (tl == 0) /* default case => error */
CASERNG(tl1);
pc.cp += *(tsp - tl);
continue;
case O_CASE4OP:
tl = *pc.cp++; /* tl = number of cases */
if (tl == 0)
tl = *pc.usp++;
tsp = pc.sp + tl; /* ptr to end of jump table */
tlp = (long *)tsp; /* tlp = ptr to case values */
tl1 = pop4(); /* tl1 = element to find */
for(; tl > 0; tl--) /* look for element */
if (tl1 == *tlp++)
break;
if (tl == 0) /* default case => error */
CASERNG(tl1);
pc.cp += *(tsp - tl);
continue;
case O_ADDT:
tl = *pc.cp++; /* tl has comparison length */
if (tl == 0)
tl = *pc.usp++;
tcp = pushsp((long)(0));/* tcp pts to first arg */
ADDT(tcp + tl, tcp + tl, tcp, tl >> 2);
popsp(tl);
continue;
case O_SUBT:
tl = *pc.cp++; /* tl has comparison length */
if (tl == 0)
tl = *pc.usp++;
tcp = pushsp((long)(0));/* tcp pts to first arg */
SUBT(tcp + tl, tcp + tl, tcp, tl >> 2);
popsp(tl);
continue;
case O_MULT:
tl = *pc.cp++; /* tl has comparison length */
if (tl == 0)
tl = *pc.usp++;
tcp = pushsp((long)(0));/* tcp pts to first arg */
MULT(tcp + tl, tcp + tl, tcp, tl >> 2);
popsp(tl);
continue;
case O_INCT:
tl = *pc.cp++; /* tl has number of args */
if (tl == 0)
tl = *pc.usp++;
tb = INCT();
popsp(tl*sizeof(long));
push2((short)(tb));
continue;
case O_CTTOT:
tl = *pc.cp++; /* tl has number of args */
if (tl == 0)
tl = *pc.usp++;
tl1 = tl * sizeof(long);
tcp = pushsp((long)(0)) + tl1; /* tcp pts to result */
CTTOT(tcp);
popsp(tl*sizeof(long));
continue;
case O_CARD:
tl = *pc.cp++; /* tl has comparison length */
if (tl == 0)
tl = *pc.usp++;
tcp = pushsp((long)(0));/* tcp pts to set */
tl1 = CARD(tcp, tl);
popsp(tl);
push2((short)(tl1));
continue;
case O_IN:
tl = *pc.cp++; /* tl has comparison length */
if (tl == 0)
tl = *pc.usp++;
tl1 = pop4(); /* tl1 is the element */
tcp = pushsp((long)(0));/* tcp pts to set */
tl2 = *pc.sp++; /* lower bound */
tb = IN(tl1, tl2, (long)(*pc.usp++), tcp);
popsp(tl);
push2((short)(tb));
continue;
case O_ASRT:
pc.cp++;
ASRTS();
popsp((long)(sizeof(long)+sizeof(char *)));
continue;
case O_FOR1U:
tl1 = *pc.cp++; /* tl1 loop branch */
if (tl1 == 0)
tl1 = *pc.sp++;
tcp = popaddr(); /* tcp = ptr to index var */
tl = pop4(); /* tl upper bound */
if (*tcp == tl) /* loop is done, fall through */
continue;
*tcp += 1; /* inc index var */
pc.cp += tl1; /* return to top of loop */
continue;
case O_FOR2U:
tl1 = *pc.cp++; /* tl1 loop branch */
if (tl1 == 0)
tl1 = *pc.sp++;
tsp = (short *)popaddr(); /* tsp = ptr to index var */
tl = pop4(); /* tl upper bound */
if (*tsp == tl) /* loop is done, fall through */
continue;
*tsp += 1; /* inc index var */
pc.cp += tl1; /* return to top of loop */
continue;
case O_FOR4U:
tl1 = *pc.cp++; /* tl1 loop branch */
if (tl1 == 0)
tl1 = *pc.sp++;
tlp = (long *)popaddr(); /* tlp = ptr to index var */
tl = pop4(); /* tl upper bound */
if (*tlp == tl) /* loop is done, fall through */
continue;
*tlp += 1; /* inc index var */
pc.cp += tl1; /* return to top of loop */
continue;
case O_FOR1D:
tl1 = *pc.cp++; /* tl1 loop branch */
if (tl1 == 0)
tl1 = *pc.sp++;
tcp = popaddr(); /* tcp = ptr to index var */
tl = pop4(); /* tl upper bound */
if (*tcp == tl) /* loop is done, fall through */
continue;
*tcp -= 1; /* dec index var */
pc.cp += tl1; /* return to top of loop */
continue;
case O_FOR2D:
tl1 = *pc.cp++; /* tl1 loop branch */
if (tl1 == 0)
tl1 = *pc.sp++;
tsp = (short *)popaddr(); /* tsp = ptr to index var */
tl = pop4(); /* tl upper bound */
if (*tsp == tl) /* loop is done, fall through */
continue;
*tsp -= 1; /* dec index var */
pc.cp += tl1; /* return to top of loop */
continue;
case O_FOR4D:
tl1 = *pc.cp++; /* tl1 loop branch */
if (tl1 == 0)
tl1 = *pc.sp++;
tlp = (long *)popaddr(); /* tlp = ptr to index var */
tl = pop4(); /* tl upper bound */
if (*tlp == tl) /* loop is done, fall through */
continue;
*tlp -= 1; /* dec index var */
pc.cp += tl1; /* return to top of loop */
continue;
case O_READE:
pc.cp++;
push2((short)(READE(curfile, base + *pc.lp++)));
continue;
case O_READ4:
pc.cp++;
push4(READ4(curfile));
continue;
case O_READC:
pc.cp++;
push2((short)(READC(curfile)));
continue;
case O_READ8:
pc.cp++;
push8(READ8(curfile));
continue;
case O_READLN:
pc.cp++;
READLN(curfile);
continue;
case O_EOF:
pc.cp++;
push2((short)(TEOF(popaddr())));
continue;
case O_EOLN:
pc.cp++;
push2((short)(TEOLN(popaddr())));
continue;
case O_WRITEC:
if (_runtst) {
WRITEC(curfile);
popsp((long)(*pc.cp++));
continue;
}
fputc();
popsp((long)(*pc.cp++));
continue;
case O_WRITES:
if (_runtst) {
WRITES(curfile);
popsp((long)(*pc.cp++));
continue;
}
fwrite();
popsp((long)(*pc.cp++));
continue;
case O_WRITEF:
if (_runtst) {
WRITEF(curfile);
popsp((long)(*pc.cp++));
continue;
}
fprintf();
popsp((long)(*pc.cp++));
continue;
case O_WRITLN:
pc.cp++;
if (_runtst) {
WRITLN(curfile);
continue;
}
fputc('\n', ACTFILE(curfile));
continue;
case O_PAGE:
pc.cp++;
if (_runtst) {
PAGE(curfile);
continue;
}
fputc('\f', ACTFILE(curfile));
continue;
case O_NAM:
pc.cp++;
tl = pop4();
pushaddr(NAM(tl, base + *pc.lp++));
continue;
case O_MAX:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.usp++;
tl1 = pop4();
if (_runtst) {
push4(MAX(tl1, tl, (long)(*pc.usp++)));
continue;
}
tl1 -= tl;
tl = *pc.usp++;
push4(tl1 > tl ? tl1 : tl);
continue;
case O_MIN:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.usp++;
tl1 = pop4();
push4(tl1 < tl ? tl1 : tl);
continue;
case O_UNIT:
pc.cp++;
curfile = UNIT(popaddr());
continue;
case O_UNITINP:
pc.cp++;
curfile = INPUT;
continue;
case O_UNITOUT:
pc.cp++;
curfile = OUTPUT;
continue;
case O_MESSAGE:
pc.cp++;
PFLUSH();
curfile = ERR;
continue;
case O_PUT:
pc.cp++;
PUT(curfile);
continue;
case O_GET:
pc.cp++;
GET(curfile);
continue;
case O_FNIL:
pc.cp++;
pushaddr(FNIL(popaddr()));
continue;
case O_DEFNAME:
pc.cp++;
DEFNAME();
popsp((long)(2*sizeof(char *)+2*sizeof(long)));
continue;
case O_RESET:
pc.cp++;
RESET();
popsp((long)(2*sizeof(char *)+2*sizeof(long)));
continue;
case O_REWRITE:
pc.cp++;
REWRITE();
popsp((long)(2*sizeof(char *)+2*sizeof(long)));
continue;
case O_FILE:
pc.cp++;
pushaddr(ACTFILE(curfile));
continue;
case O_REMOVE:
pc.cp++;
REMOVE();
popsp((long)(sizeof(char *)+sizeof(long)));
continue;
case O_FLUSH:
pc.cp++;
FLUSH();
popsp((long)(sizeof(char *)));
continue;
case O_PACK:
pc.cp++;
PACK();
popsp((long)(5*sizeof(long)+2*sizeof(char*)));
continue;
case O_UNPACK:
pc.cp++;
UNPACK();
popsp((long)(5*sizeof(long)+2*sizeof(char*)));
continue;
case O_ARGC:
pc.cp++;
push4((long)_argc);
continue;
case O_ARGV:
tl = *pc.cp++; /* tl = size of char array */
if (tl == 0)
tl = *pc.usp++;
tcp = popaddr(); /* tcp = addr of char array */
tl1 = pop4(); /* tl1 = argv subscript */
ARGV(tl1, tcp, tl);
continue;
case O_CLCK:
pc.cp++;
push4(CLCK());
continue;
case O_WCLCK:
pc.cp++;
push4(time(0));
continue;
case O_SCLCK:
pc.cp++;
push4(SCLCK());
continue;
case O_NEW:
tl = *pc.cp++; /* tl = size being new'ed */
if (tl == 0)
tl = *pc.usp++;
tcp = popaddr(); /* ptr to ptr being new'ed */
NEW(tcp, tl);
if (_runtst) {
blkclr(*((char **)(tcp)), tl);
}
continue;
case O_DISPOSE:
tl = *pc.cp++; /* tl = size being disposed */
if (tl == 0)
tl = *pc.usp++;
tcp = popaddr(); /* ptr to ptr being disposed */
DISPOSE(tcp, tl);
*(char **)tcp = (char *)0;
continue;
case O_DFDISP:
tl = *pc.cp++; /* tl = size being disposed */
if (tl == 0)
tl = *pc.usp++;
tcp = popaddr(); /* ptr to ptr being disposed */
DFDISPOSE(tcp, tl);
*(char **)tcp = (char *)0;
continue;
case O_DATE:
pc.cp++;
DATE(popaddr());
continue;
case O_TIME:
pc.cp++;
TIME(popaddr());
continue;
case O_UNDEF:
pc.cp++;
pop8();
push2((short)(0));
continue;
case O_ATAN:
pc.cp++;
if (_runtst) {
push8(ATAN(pop8()));
continue;
}
push8(atan(pop8()));
continue;
case O_COS:
pc.cp++;
if (_runtst) {
push8(COS(pop8()));
continue;
}
push8(cos(pop8()));
continue;
case O_EXP:
pc.cp++;
if (_runtst) {
push8(EXP(pop8()));
continue;
}
push8(exp(pop8()));
continue;
case O_LN:
pc.cp++;
if (_runtst) {
push8(LN(pop8()));
continue;
}
push8(log(pop8()));
continue;
case O_SIN:
pc.cp++;
if (_runtst) {
push8(SIN(pop8()));
continue;
}
push8(sin(pop8()));
continue;
case O_SQRT:
pc.cp++;
if (_runtst) {
push8(SQRT(pop8()));
continue;
}
push8(sqrt(pop8()));
continue;
case O_CHR2:
case O_CHR4:
pc.cp++;
if (_runtst) {
push2((short)(CHR(pop4())));
continue;
}
push2((short)(pop4()));
continue;
case O_ODD2:
case O_ODD4:
pc.cp++;
tl = pop4();
push2((short)(tl & 1));
continue;
case O_SUCC2:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.sp++;
tl1 = pop4();
if (_runtst) {
push2((short)(SUCC(tl1, tl, (long)(*pc.sp++))));
continue;
}
push2((short)(tl1 + 1));
pc.sp++;
continue;
case O_SUCC24:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.sp++;
tl1 = pop4();
if (_runtst) {
push4(SUCC(tl1, tl, (long)(*pc.sp++)));
continue;
}
push4(tl1 + 1);
pc.sp++;
continue;
case O_SUCC4:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.lp++;
tl1 = pop4();
if (_runtst) {
push4(SUCC(tl1, tl, (long)(*pc.lp++)));
continue;
}
push4(tl1 + 1);
pc.lp++;
continue;
case O_PRED2:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.sp++;
tl1 = pop4();
if (_runtst) {
push2((short)(PRED(tl1, tl, (long)(*pc.sp++))));
continue;
}
push2((short)(tl1 - 1));
pc.sp++;
continue;
case O_PRED24:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.sp++;
tl1 = pop4();
if (_runtst) {
push4(PRED(tl1, tl, (long)(*pc.sp++)));
continue;
}
push4(tl1 - 1);
pc.sp++;
continue;
case O_PRED4:
tl = *pc.cp++;
if (tl == 0)
tl = *pc.lp++;
tl1 = pop4();
if (_runtst) {
push4(PRED(tl1, tl, (long)(*pc.lp++)));
continue;
}
push4(tl1 - 1);
pc.lp++;
continue;
case O_SEED:
pc.cp++;
push4(SEED(pop4()));
continue;
case O_RANDOM:
pc.cp++;
push8(RANDOM(pop8()));
continue;
case O_EXPO:
pc.cp++;
push4(EXPO(pop8()));
continue;
case O_SQR2:
case O_SQR4:
pc.cp++;
tl = pop4();
push4(tl * tl);
continue;
case O_SQR8:
pc.cp++;
td = pop8();
push8(td * td);
continue;
case O_ROUND:
pc.cp++;
push4(ROUND(pop8()));
continue;
case O_TRUNC:
pc.cp++;
push4(TRUNC(pop8()));
continue;
default:
ERROR("Panic: bad op code\n");
continue;
}
}
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.