75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
#include "util/memory_region.h"
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#include <zcall.h>
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#include "util/debug.h"
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#include "util/init.h"
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namespace mmth {
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OwnedMemoryRegion::OwnedMemoryRegion(OwnedMemoryRegion&& other)
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: OwnedMemoryRegion(other.vmmo_cap_, other.vaddr_, other.size_) {
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other.vmmo_cap_ = 0;
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other.vaddr_ = 0;
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other.size_ = 0;
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}
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OwnedMemoryRegion& OwnedMemoryRegion::operator=(OwnedMemoryRegion&& other) {
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if (vmmo_cap_) {
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check(ZCapRelease(vmmo_cap_));
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}
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vmmo_cap_ = other.vmmo_cap_;
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vaddr_ = other.vaddr_;
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size_ = other.size_;
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other.vmmo_cap_ = 0;
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other.vaddr_ = 0;
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other.size_ = 0;
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return *this;
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}
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OwnedMemoryRegion::~OwnedMemoryRegion() {
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if (vmmo_cap_ != 0) {
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check(ZAddressSpaceUnmap(gSelfVmasCap, vaddr_, vaddr_ + size_));
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check(ZCapRelease(vmmo_cap_));
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}
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}
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OwnedMemoryRegion OwnedMemoryRegion::FromCapability(z_cap_t vmmo_cap) {
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uint64_t vaddr;
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check(ZAddressSpaceMap(gSelfVmasCap, 0, vmmo_cap, &vaddr));
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uint64_t size;
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check(ZMemoryObjectInspect(vmmo_cap, &size));
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// FIXME: get the size here.
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return OwnedMemoryRegion(vmmo_cap, vaddr, size);
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}
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OwnedMemoryRegion OwnedMemoryRegion::ContiguousPhysical(uint64_t size,
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uint64_t* paddr) {
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uint64_t vmmo_cap;
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check(ZMemoryObjectCreateContiguous(size, &vmmo_cap, paddr));
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uint64_t vaddr;
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check(ZAddressSpaceMap(gSelfVmasCap, 0, vmmo_cap, &vaddr));
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return OwnedMemoryRegion(vmmo_cap, vaddr, size);
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}
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OwnedMemoryRegion OwnedMemoryRegion::DirectPhysical(uint64_t paddr,
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uint64_t size) {
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uint64_t vmmo_cap;
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check(ZMemoryObjectCreatePhysical(paddr, size, &vmmo_cap));
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uint64_t vaddr;
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check(ZAddressSpaceMap(gSelfVmasCap, 0, vmmo_cap, &vaddr));
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return OwnedMemoryRegion(vmmo_cap, vaddr, size);
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}
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z_cap_t OwnedMemoryRegion::DuplicateCap() {
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z_cap_t cap;
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check(ZCapDuplicate(vmmo_cap_, kZionPerm_All, &cap));
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return cap;
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}
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} // namespace mmth
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