1990/1004/gnot/mmu.c (diff list | history)

1990/0928/sys/src/9/gnot/mmu.c:19,25 – 1990/1004/sys/src/9/gnot/mmu.c:19,26 (short | long | prev | next)
1990/03091		mapstack(Proc *p) { ulong tlbvirt, tlbphys;
1990/0921		ulong i;
1990/1004		ulong next; MMU *mm, *mn, *me;
1990/03091		if(p->upage->va != (USERADDR|(p->pid&0xFFFF))) panic("mapstack %d 0x%lux 0x%lux", p->pid, p->upage->pa, p->upage->va);
1990/0928/sys/src/9/gnot/mmu.c:26,33 – 1990/1004/sys/src/9/gnot/mmu.c:27,55
1990/03091		tlbvirt = USERADDR; tlbphys = PPN(p->upage->pa) | PTEVALID | PTEKERNEL; putkmmu(tlbvirt, tlbphys); flushmmu(); u = (User*)USERADDR;
1990/1004		/* * if not a kernel process and this process was not the * last process on this machine, flush & preload mmu */ if(!p->kp && p!=m->lproc){ flushmmu(); /* * preload the MMU with the last (up to) NMMU user entries * previously faulted into it for this process. */ mn = &u->mc.mmu[u->mc.next&(NMMU-1)]; me = &u->mc.mmu[NMMU]; if(u->mc.next >= NMMU){ for(mm = mn; mm < me; mm++) UMAP[mm->va] = mm->pa; } for(mm = u->mc.mmu; mm < mn; mm++) UMAP[mm->va] = mm->pa; m->lproc = p; }
1990/03091		} void
1990/0928/sys/src/9/gnot/mmu.c:45,51 – 1990/1004/sys/src/9/gnot/mmu.c:67,85
1990/03091		if(tlbvirt&KZERO) panic("putmmu"); tlbphys |= VTAG(tlbvirt)<<24; UMAP[(tlbvirt&0x003FE000L)>>2] = tlbphys;
1990/1004		tlbvirt = (tlbvirt&0x003FE000L)>>2; if(u){ MMU *mp; int s; s = splhi(); mp = &(u->mc.mmu[u->mc.next&(NMMU-1)]); mp->pa = tlbphys; mp->va = tlbvirt; u->mc.next++; splx(s); } UMAP[tlbvirt] = tlbphys;
1990/03091		} void
1990/0928/sys/src/9/gnot/mmu.c:54,59 – 1990/1004/sys/src/9/gnot/mmu.c:88,101
1990/03091		flushcpucache(); *PARAM &= ~TLBFLUSH_; *PARAM |= TLBFLUSH_;
1990/1004		} void clearmmucache(void) { if(u == 0) panic("flushmmucache"); u->mc.next = 0;
1990/06021		} void