1990/1124/port/sysproc.c (diff list | history)

1990/1124/sys/src/9/port/sysproc.c:41,46 – 1990/1211/sys/src/9/port/sysproc.c:41,47 (short | long | prev | next)
Created. rsc Fri Mar 4 12:44:25 2005
1990/0227		/* * Save time: only copy u-> data and useful stack */
1990/1211		clearmmucache();
1990/0227		memcpy((void*)upa, u, sizeof(User)); n = USERADDR+BY2PG - (ulong)&lastvar; n = (n+32) & ~(BY2WD-1); /* be safe & word align */
1990/1124/sys/src/9/port/sysproc.c:114,119 – 1990/1211/sys/src/9/port/sysproc.c:115,121
1990/0227		* Sched */ if(setlabel(&p->sched)){
1990/1211		clearmmucache();
1990/0227		u->p = p; p->state = Running; p->mach = m;
1990/1124/sys/src/9/port/sysproc.c:132,137 – 1990/1211/sys/src/9/port/sysproc.c:134,140
1990/0227		memcpy(p->text, u->p->text, NAMELEN); ready(p); flushmmu();
1990/1211		clearmmucache();
1990/0227		return pid; }
1990/1124/sys/src/9/port/sysproc.c:147,153 – 1990/1211/sys/src/9/port/sysproc.c:150,156
1990/0227		char **argv, **argp; char *a, *charp, *file; char *progarg[sizeof(Exec)/2+1], elem[NAMELEN]; ulong ssize, spage, nargs, nbytes, n;
1990/1211		ulong ssize, spage, nargs, nbytes, n, bssend;
1990/0227		ulong *sp; int indir; Exec exec;
1990/1124/sys/src/9/port/sysproc.c:169,175 – 1990/1211/sys/src/9/port/sysproc.c:172,178
1990/0227		if(n < 2) Err:
1990/11211		error(Ebadexec);
1990/0227		if(n==sizeof(Exec) && exec.magic==V_MAGIC){
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)
1990/1124/sys/src/9/port/sysproc.c:206,212 – 1990/1211/sys/src/9/port/sysproc.c:209,216
1990/0227		* Last partial page of data goes into BSS. */ d = (t + exec.data) & ~(BY2PG-1); b = (t + exec.data + exec.bss + (BY2PG-1)) & ~(BY2PG-1);
1990/1211		bssend = t + exec.data + exec.bss; b = (bssend + (BY2PG-1)) & ~(BY2PG-1);
1990/0227		if((t|d|b) & KZERO)
1990/11211		error(Ebadexec);
1990/0227
1990/1124/sys/src/9/port/sysproc.c:331,336 – 1990/1211/sys/src/9/port/sysproc.c:335,342
1990/0227		close(tc);
1990/1211		p->bssend = bssend;
1990/0227		/* * Move the stack */
1990/1124/sys/src/9/port/sysproc.c:347,353 – 1990/1211/sys/src/9/port/sysproc.c:353,360
1990/0227		unlock(o); flushmmu(); ((Ureg*)UREGADDR)->pc = exec.entry - 4;
1990/1211		clearmmucache(); ((Ureg*)UREGADDR)->pc = exec.entry + ENTRYOFFSET;
1990/0227		sp = (ulong*)(USTKTOP - ssize); *--sp = nargs;
1990/0614		((Ureg*)UREGADDR)->usp = (ulong)sp;
1990/1124/sys/src/9/port/sysproc.c:355,360 – 1990/1211/sys/src/9/port/sysproc.c:362,368
1990/0227		u->nnote = 0; u->notify = 0; u->notified = 0;
1990/1211		setup(p);
1990/0227		unlock(&p->debug); return 0; }
1990/1124/sys/src/9/port/sysproc.c:488,494 – 1990/1211/sys/src/9/port/sysproc.c:496,520
1990/0227		long sysbrk_(ulong *arg) { if(segaddr(&u->p->seg[BSEG], u->p->seg[BSEG].minva, arg[0]) == 0)
1990/1211		ulong addr; Seg *s; addr = arg[0]; #ifdef WHYROB if(addr < u->p->bssend){ pprint("addr below bss\n"); pexit("Suicide", 0);
1990/11211		error(Esegaddr);
1990/1211		} #endif WHYROB if(addr <= ((u->p->bssend+(BY2PG-1))&~(BY2PG-1))) /* still in DSEG */ goto Return; if(segaddr(&u->p->seg[BSEG], u->p->seg[BSEG].minva, arg[0]) == 0){ pprint("bad segaddr in brk\n"); pexit("Suicide", 0); error(Esegaddr); } Return: u->p->bssend = addr;
1990/0227		return 0; }