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Teach libkvm to deal with direct mapped addresses.

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This commit is contained in:
jake 2002-12-27 01:45:05 +00:00
parent dc47dfe349
commit 3581f2e766
1 changed files with 14 additions and 9 deletions
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23
lib/libkvm/kvm_sparc64.c
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@ -64,6 +64,7 @@ static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
#include <machine/kerneldump.h>
#include <machine/tte.h>
#include <machine/tlb.h>
#include <machine/tsb.h>
#include <limits.h>
@ -198,17 +199,21 @@ _kvm_kvatop(kvm_t *kd, u_long va, u_long *pa)
u_long pg_off, vpn;
int rest;
vpn = btop(va);
pg_off = va & PAGE_MASK;
tte_off = kd->vmst->vm_tsb_off +
((vpn & kd->vmst->vm_tsb_mask) << TTE_SHIFT);
if (!_kvm_read_phys(kd, tte_off, &tte, sizeof(tte)))
goto invalid;
if (!tte_match(&tte, va))
goto invalid;
if (va >= VM_MIN_DIRECT_ADDRESS)
pa_off = TLB_DIRECT_TO_PHYS(va) & ~PAGE_MASK;
else {
vpn = btop(va);
tte_off = kd->vmst->vm_tsb_off +
((vpn & kd->vmst->vm_tsb_mask) << TTE_SHIFT);
if (!_kvm_read_phys(kd, tte_off, &tte, sizeof(tte)))
goto invalid;
if (!tte_match(&tte, va))
goto invalid;
pa_off = TTE_GET_PA(&tte);
}
rest = PAGE_SIZE - pg_off;
pa_off = _kvm_find_off(kd->vmst, TTE_GET_PA(&tte), rest);
pa_off = _kvm_find_off(kd->vmst, pa_off, rest);
if (pa_off == KVM_OFF_NOTFOUND)
goto invalid;
*pa = pa_off + pg_off;