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Merge pull request #214 from DrChat/interlocked_slist 

Implement interlocked slist
This commit is contained in:
Ben Vanik 2015-05-18 19:12:41 -07:00
parent 2cacacea8a 90648187dd
commit fea2f25130
1 changed files with 27 additions and 0 deletions
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27
src/xenia/kernel/xboxkrnl_threading.cc
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@ -1289,6 +1289,31 @@ SHIM_CALL KeRemoveQueueDpc_shim(PPCContext* ppc_state, KernelState* state) {
SHIM_SET_RETURN_64(result ? 1 : 0);
}
// http://www.nirsoft.net/kernel_struct/vista/SLIST_HEADER.html
SHIM_CALL InterlockedPopEntrySList_shim(PPCContext* ppc_state, KernelState* state) {
uint32_t plist_ptr = SHIM_GET_ARG_32(0);
XELOGD("InterlockedPopEntrySList(%.8X)", plist_ptr);
// TODO: Interlocked part of this
uint8_t* p = state->memory()->TranslateVirtual(plist_ptr);
auto first = xe::load_and_swap<uint32_t>(p);
if (first == 0) {
// List empty!
SHIM_SET_RETURN_32(0);
return;
}
uint8_t* p2 = state->memory()->TranslateVirtual(first);
auto second = xe::load_and_swap<uint32_t>(p2);
// Now drop the first element
xe::store_and_swap<uint32_t>(p, second);
// Return the one we popped
SHIM_SET_RETURN_32(first);
}
} // namespace kernel
} // namespace xe
@ -1364,4 +1389,6 @@ void xe::kernel::xboxkrnl::RegisterThreadingExports(
SHIM_SET_MAPPING("xboxkrnl.exe", KeInitializeDpc, state);
SHIM_SET_MAPPING("xboxkrnl.exe", KeInsertQueueDpc, state);
SHIM_SET_MAPPING("xboxkrnl.exe", KeRemoveQueueDpc, state);
SHIM_SET_MAPPING("xboxkrnl.exe", InterlockedPopEntrySList, state);
}