1992/0805/pc/trap.c (diff list | history)

1992/0804/sys/src/9/pc/trap.c:110,116 – 1992/0805/sys/src/9/pc/trap.c:110,116 (short | long | prev | next)
1991/0823		sethvec(11, intr11, SEGTG, 0); sethvec(12, intr12, SEGTG, 0); sethvec(13, intr13, SEGTG, 0); sethvec(14, intr14, SEGTG, 0);
1992/0805		sethvec(14, intr14, SEGIG, 0);
1991/0823		sethvec(15, intr15, SEGTG, 0);
1991/0904		sethvec(16, intr16, SEGTG, 0);
1991/0731
1992/0804/sys/src/9/pc/trap.c:333,342 – 1992/0805/sys/src/9/pc/trap.c:333,351
1991/0720		if((ur->cs)&0xffff == KESEL) panic("recursive system call");
1991/0718
1991/0720		/* * do something about floating point!!! */
1992/06271		u->scallnr = ur->ax;
1992/0805		if(u->scallnr == RFORK && u->p->fpstate == FPactive){ /* * so that the child starts out with the * same registers as the parent */ splhi(); if(u->p->fpstate == FPactive){ fpsave(&u->fpsave); u->p->fpstate = FPinactive; } spllo(); }
1991/0720		sp = ur->usp; u->nerrlab = 0; ret = -1;
1992/0804/sys/src/9/pc/trap.c:353,362 – 1992/0805/sys/src/9/pc/trap.c:362,369
1992/0625		u->s = *((Sargs*)(sp+1*BY2WD));
1992/06271		u->p->psstate = sysctab[u->scallnr];
1992/0625
1992/0804		if(u->p->fgrp->ref <= 0) print("before syscall %s\n", u->p->psstate);
1992/06271		ret = (*systab[u->scallnr])(u->s.args);
1991/0720		poperror();
1992/0804		if(u->p->fgrp->ref <= 0) print("after syscall %s\n", u->p->psstate);
1991/0720		} if(u->nerrlab){
1992/06271		print("bad errstack [%d]: %d extra\n", u->scallnr, u->nerrlab);