/*===========================================================================*
* pt_sanitycheck *
*===========================================================================*/
PUBLIC void pt_sanitycheck(pt_t *pt, char *file, int line)
{
/* Basic pt sanity check. */
int i;
int slot;
MYASSERT(pt);
MYASSERT(pt->pt_dir);
MYASSERT(pt->pt_dir_phys);
for(slot = 0; slot < ELEMENTS(vmproc); slot++) {
if(pt == &vmproc[slot].vm_pt)
break;
}
if(slot >= ELEMENTS(vmproc)) {
vm_panic("pt_sanitycheck: passed pt not in any proc", NO_NUM);
}
MYASSERT(usedpages_add(pt->pt_dir_phys, I386_PAGE_SIZE) == OK);
for(i = proc_pde; i < I386_VM_DIR_ENTRIES; i++) {
if(pt->pt_pt[i]) {
if(!(pt->pt_dir[i] & I386_VM_PRESENT)) {
printf("slot %d: pt->pt_pt[%d] = 0x%lx, but pt_dir entry 0x%lx\n",
slot, i, pt->pt_pt[i], pt->pt_dir[i]);
}
MYASSERT(pt->pt_dir[i] & I386_VM_PRESENT);
MYASSERT(usedpages_add(I386_VM_PFA(pt->pt_dir[i]),
I386_PAGE_SIZE) == OK);
} else {
MYASSERT(!(pt->pt_dir[i] & I386_VM_PRESENT));
}
}
}
/*===========================================================================*
* pt_free *
*===========================================================================*/
PUBLIC void pt_free(pt_t *pt)
{
/* Free memory associated with this pagetable. */
int i;
for(i = 0; i < I386_VM_DIR_ENTRIES; i++)
if(pt->pt_pt[i])
vm_freepages((vir_bytes) pt->pt_pt[i],
I386_VM_PFA(pt->pt_dir[i]), 1, VMP_PAGETABLE);
return;
}
