1991/0723/port/sysproc.c (diff list | history)

1991/0712/sys/src/9/port/sysproc.c:96,101 – 1991/0723/sys/src/9/port/sysproc.c:96,110 (short | long | prev | next)
1990/0227		return pid; }
1991/0723		static ulong l2be(long l) { uchar *cp; cp = (uchar*)&l; return (cp[0]<<24) | (cp[1]<<16) | (cp[2]<<8) | cp[3]; }
1990/0227		long sysexec(ulong *arg) {
1991/0712/sys/src/9/port/sysproc.c:114,119 – 1991/0723/sys/src/9/port/sysproc.c:123,129
1990/0227		char line[sizeof(Exec)];
1991/0705		Fgrp *f; Image *img;
1991/0723		ulong magic, text, entry, data, bss;
1990/0227		p = u->p; validaddr(arg[0], 1, 0);
1991/0712/sys/src/9/port/sysproc.c:132,141 – 1991/0723/sys/src/9/port/sysproc.c:142,154
1990/0227		if(n < 2) Err:
1990/11211		error(Ebadexec);
1990/1211		if(n==sizeof(Exec) && exec.magic==AOUT_MAGIC){
1990/0227		if((exec.text&KZERO) || (ulong)exec.entry < UTZERO+sizeof(Exec) || (ulong)exec.entry >= UTZERO+sizeof(Exec)+exec.text)
1991/0723		magic = l2be(exec.magic); text = l2be(exec.text); entry = l2be(exec.entry); if(n==sizeof(Exec) && magic==AOUT_MAGIC){ if((text&KZERO) || entry < UTZERO+sizeof(Exec) || entry >= UTZERO+sizeof(Exec)+text)
1990/0227		goto Err; goto Binary; }
1991/0712/sys/src/9/port/sysproc.c:165,173 – 1991/0723/sys/src/9/port/sysproc.c:178,188
1990/0227		Binary:
1991/0705		poperror();
1990/0227		t = (UTZERO+sizeof(Exec)+exec.text+(BY2PG-1)) & ~(BY2PG-1);
1990/1212		d = (t + exec.data + (BY2PG-1)) & ~(BY2PG-1);
1990/1211		bssend = t + exec.data + exec.bss;
1991/0723		data = l2be(exec.data); bss = l2be(exec.bss); t = (UTZERO+sizeof(Exec)+text+(BY2PG-1)) & ~(BY2PG-1); d = (t + data + (BY2PG-1)) & ~(BY2PG-1); bssend = t + data + bss;
1990/1211		b = (bssend + (BY2PG-1)) & ~(BY2PG-1);
1990/0227		if((t|d|b) & KZERO)
1990/11211		error(Ebadexec);
1991/0712/sys/src/9/port/sysproc.c:254,260 – 1991/0723/sys/src/9/port/sysproc.c:269,275
1991/0705		p->seg[TSEG] = ts;
1991/0706		ts->flushme = 1;
1991/0705		ts->fstart = 0; ts->flen = sizeof(Exec)+exec.text;
1991/0723		ts->flen = sizeof(Exec)+text;
1990/0227
1991/0705		/* Data. Shared. */ s = newseg(SG_DATA, t, (d-t)>>PGSHIFT);
1991/0712/sys/src/9/port/sysproc.c:264,270 – 1991/0723/sys/src/9/port/sysproc.c:279,285
1991/0705		incref(img); s->image = img; s->fstart = ts->fstart+ts->flen; s->flen = exec.data;
1991/0723		s->flen = data;
1990/0227
1991/0705		/* BSS. Zero fill on demand */ p->seg[BSEG] = newseg(SG_BSS, d, (b-d)>>PGSHIFT);
1991/0712/sys/src/9/port/sysproc.c:288,294 – 1991/0723/sys/src/9/port/sysproc.c:303,309
1991/0529		*/
1990/0227		flushmmu();
1990/1212		clearmmucache();
1990/1226		execpc(exec.entry);
1991/0723		execpc(entry);
1990/0227		sp = (ulong*)(USTKTOP - ssize); *--sp = nargs;
1990/0614		((Ureg*)UREGADDR)->usp = (ulong)sp;
1991/0712/sys/src/9/port/sysproc.c:488,493 – 1991/0723/sys/src/9/port/sysproc.c:503,509
1991/0705		int i; Segment *s;
1991/0723		s = 0;
1991/0705		for(i = 0; i < NSEG; i++) if(s = u->p->seg[i]) { qlock(&s->lk);