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add pmap_dump as a DEBUG function

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chuck 1998-03-26 19:49:51 +00:00
parent f46f2d693e
commit 5f8c3edfed
1 changed files with 66 additions and 1 deletions
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67
sys/arch/i386/i386/pmap.new.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.new.c,v 1.7 1998/03/25 22:49:11 chuck Exp $ */
/* $NetBSD: pmap.new.c,v 1.8 1998/03/26 19:49:51 chuck Exp $ */
/*
*
@ -3494,3 +3494,68 @@ vm_offset_t maxkvaddr;
simple_unlock(&kpm->pm_obj.vmobjlock);
splx(s);
}
#ifdef DEBUG
void pmap_dump __P((struct pmap *, vm_offset_t, vm_offset_t));
/*
* pmap_dump: dump all the mappings from a pmap
*
* => caller should not be holding any pmap locks
*/
void pmap_dump(pmap, sva, eva)
struct pmap *pmap;
vm_offset_t sva, eva;
{
pt_entry_t *ptes, *pte;
vm_offset_t blkendva;
/*
* if end is out of range truncate.
* if (end == start) update to max.
*/
if (eva > VM_MAXUSER_ADDRESS || eva <= sva)
eva = VM_MAXUSER_ADDRESS;
/*
* we lock in the pmap => pv_head direction
*/
PMAP_MAP_TO_HEAD_LOCK();
ptes = pmap_map_ptes(pmap); /* locks pmap */
/*
* dumping a range of pages: we dump in PTP sized blocks (4MB)
*/
for (/* null */ ; sva < eva ; sva = blkendva) {
/* determine range of block */
blkendva = i386_round_pdr(sva+1);
if (blkendva > eva)
blkendva = eva;
if (!pmap_valid_entry(pmap->pm_pdir[pdei(sva)])) /* valid block? */
continue;
pte = &ptes[i386_btop(sva)];
for (/* null */; sva < blkendva ; sva += NBPG, pte++) {
if (!pmap_valid_entry(*pte)) continue;
printf("va %#lx -> pa %#x (pte=%#x)\n", sva, *pte, *pte & PG_FRAME);
}
}
/*
* done!
*/
pmap_unmap_ptes(pmap);
PMAP_MAP_TO_HEAD_UNLOCK();
return;
}
#endif