int
_kvm_kvatop(kvm_t *kd, u_long va, off_t *pa)
{
struct vmstate *vm = kd->vmst;
pd_entry_t pd;
pt_entry_t pte;
u_long pte_pa;
if (kd->vmst->minidump)
return (_kvm_minidump_kvatop(kd, va, pa));
if (vm->l1pt == NULL)
return (_kvm_pa2off(kd, va, pa, PAGE_SIZE));
pd = vm->l1pt[L1_IDX(va)];
if (!l1pte_valid(pd))
goto invalid;
if (l1pte_section_p(pd)) {
/* 1MB section mapping. */
*pa = ((u_long)pd & L1_S_ADDR_MASK) + (va & L1_S_OFFSET);
return (_kvm_pa2off(kd, *pa, pa, L1_S_SIZE));
}
pte_pa = (pd & L1_ADDR_MASK) + l2pte_index(va) * sizeof(pte);
_kvm_pa2off(kd, pte_pa, (off_t *)&pte_pa, L1_S_SIZE);
if (lseek(kd->pmfd, pte_pa, 0) == -1) {
_kvm_syserr(kd, kd->program, "_kvm_kvatop: lseek");
goto invalid;
}
if (read(kd->pmfd, &pte, sizeof(pte)) != sizeof (pte)) {
_kvm_syserr(kd, kd->program, "_kvm_kvatop: read");
goto invalid;
}
if (!l2pte_valid(pte)) {
goto invalid;
}
if ((pte & L2_TYPE_MASK) == L2_TYPE_L) {
*pa = (pte & L2_L_FRAME) | (va & L2_L_OFFSET);
return (_kvm_pa2off(kd, *pa, pa, L2_L_SIZE));
}
*pa = (pte & L2_S_FRAME) | (va & L2_S_OFFSET);
return (_kvm_pa2off(kd, *pa, pa, PAGE_SIZE));
invalid:
_kvm_err(kd, 0, "Invalid address (%lx)", va);
return 0;
}
static int
_arm_kvatop(kvm_t *kd, kvaddr_t va, off_t *pa)
{
struct vmstate *vm = kd->vmst;
arm_pd_entry_t pd;
arm_pt_entry_t pte;
arm_physaddr_t pte_pa;
off_t pte_off;
if (vm->l1pt == NULL)
return (_kvm_pa2off(kd, va, pa, ARM_PAGE_SIZE));
pd = _kvm32toh(kd, vm->l1pt[ARM_L1_IDX(va)]);
if (!l1pte_valid(pd))
goto invalid;
if (l1pte_section_p(pd)) {
/* 1MB section mapping. */
*pa = (pd & ARM_L1_S_ADDR_MASK) + (va & ARM_L1_S_OFFSET);
return (_kvm_pa2off(kd, *pa, pa, ARM_L1_S_SIZE));
}
pte_pa = (pd & ARM_L1_C_ADDR_MASK) + l2pte_index(va) * sizeof(pte);
_kvm_pa2off(kd, pte_pa, &pte_off, ARM_L1_S_SIZE);
if (pread(kd->pmfd, &pte, sizeof(pte), pte_off) != sizeof(pte)) {
_kvm_syserr(kd, kd->program, "_arm_kvatop: pread");
goto invalid;
}
pte = _kvm32toh(kd, pte);
if (!l2pte_valid(pte)) {
goto invalid;
}
if ((pte & ARM_L2_TYPE_MASK) == ARM_L2_TYPE_L) {
*pa = (pte & ARM_L2_L_FRAME) | (va & ARM_L2_L_OFFSET);
return (_kvm_pa2off(kd, *pa, pa, ARM_L2_L_SIZE));
}
*pa = (pte & ARM_L2_S_FRAME) | (va & ARM_L2_S_OFFSET);
return (_kvm_pa2off(kd, *pa, pa, ARM_PAGE_SIZE));
invalid:
_kvm_err(kd, 0, "Invalid address (%jx)", (uintmax_t)va);
return 0;
}