1991/0314/power/trap.c (diff list | history)

1991/0219/sys/src/9/power/trap.c:121,133 – 1991/0314/sys/src/9/power/trap.c:121,133 (short | long | prev | next)
1990/0227		case CCPU:
1990/0722		if(u && u->p && u->p->fpstate == FPinit) {
1990/0227		restfpregs(&initfp);
1991/0314		restfpregs(&initfp, u->fpsave.fpstatus);
1990/0227		u->p->fpstate = FPactive; ur->status |= CU1; break; }
1990/0722		if(u && u->p && u->p->fpstate == FPinactive) {
1990/0227		restfpregs(&u->fpsave);
1991/0314		restfpregs(&u->fpsave, u->fpsave.fpstatus);
1990/0227		u->p->fpstate = FPactive; ur->status |= CU1; break;
1991/0219/sys/src/9/power/trap.c:166,172 – 1991/0314/sys/src/9/power/trap.c:166,172
1990/0227		notify(ur); splhi(); if(user && u && u->p->fpstate == FPinactive) { restfpregs(&u->fpsave);
1991/0314		restfpregs(&u->fpsave, u->fpsave.fpstatus);
1990/0227		u->p->fpstate = FPactive; ur->status |= CU1; }
1991/0219/sys/src/9/power/trap.c:458,466 – 1991/0314/sys/src/9/power/trap.c:458,468
1990/0901		ur->cause = 15<<2; /* for debugging: system call is undef 15;
1990/0227		/* * since the system call interface does not * guarantee anything about registers,
1991/0314		* guarantee anything about registers, we can * smash them. but we must save fpstatus.
1990/0227		*/ if(u->p->fpstate == FPactive) {
1991/0314		u->fpsave.fpstatus = fcr31();
1990/0722		u->p->fpstate = FPinit;
1990/0227		ur->status &= ~CU1; }