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kern: implement SvcArbitrateLock, SvcArbitrateUnlock

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This commit is contained in:
Michael Scire 2020-07-09 20:45:26 -07:00
parent f4fd4cbbb2
commit 4f12449acf
3 changed files with 114 additions and 6 deletions
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28
libraries/libmesosphere/source/svc/kern_svc_lock.cpp
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@ -21,28 +21,48 @@ namespace ams::kern::svc {
namespace {
constexpr bool IsKernelAddress(uintptr_t address) {
return KernelVirtualAddressSpaceBase <= address && address < KernelVirtualAddressSpaceEnd;
}
Result ArbitrateLock(ams::svc::Handle thread_handle, uintptr_t address, uint32_t tag) {
/* Validate the input address. */
R_UNLESS(!IsKernelAddress(address), svc::ResultInvalidCurrentMemory());
R_UNLESS(util::IsAligned(address, sizeof(u32)), svc::ResultInvalidAddress());
MESOSPHERE_LOG("%lx: ArbitrateLock(%08x, %lx, %08x)\n", GetCurrentThread().GetId(), thread_handle, address, tag);
return GetCurrentProcess().WaitForAddress(thread_handle, address, tag);
}
Result ArbitrateUnlock(uintptr_t address) {
/* Validate the input address. */
R_UNLESS(!IsKernelAddress(address), svc::ResultInvalidCurrentMemory());
R_UNLESS(util::IsAligned(address, sizeof(u32)), svc::ResultInvalidAddress());
MESOSPHERE_LOG("%lx: ArbitrateUnlock(%lx)\n", GetCurrentThread().GetId(), address);
return GetCurrentProcess().SignalToAddress(address);
}
}
/* ============================= 64 ABI ============================= */
Result ArbitrateLock64(ams::svc::Handle thread_handle, ams::svc::Address address, uint32_t tag) {
MESOSPHERE_PANIC("Stubbed SvcArbitrateLock64 was called.");
return ArbitrateLock(thread_handle, address, tag);
}
Result ArbitrateUnlock64(ams::svc::Address address) {
MESOSPHERE_PANIC("Stubbed SvcArbitrateUnlock64 was called.");
return ArbitrateUnlock(address);
}
/* ============================= 64From32 ABI ============================= */
Result ArbitrateLock64From32(ams::svc::Handle thread_handle, ams::svc::Address address, uint32_t tag) {
MESOSPHERE_PANIC("Stubbed SvcArbitrateLock64From32 was called.");
return ArbitrateLock(thread_handle, address, tag);
}
Result ArbitrateUnlock64From32(ams::svc::Address address) {
MESOSPHERE_PANIC("Stubbed SvcArbitrateUnlock64From32 was called.");
return ArbitrateUnlock(address);
}
}