ShuriZma
/
xenia
mirror of https://github.com/xenia-project/xenia.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Shuffle around RTL critical section code and add asserts 

Get thread ID using new api
This commit is contained in:
Dr. Chat 2015-07-21 22:09:26 -05:00
parent 7ceaf678e0
commit b6f8985c8c
1 changed files with 32 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

80
src/xenia/kernel/xboxkrnl_rtl.cc
View File

@ -292,26 +292,22 @@ DECLARE_XBOXKRNL_EXPORT(RtlImageXexHeaderField, ExportTag::kImplemented);
// their embedded data and InitializeCriticalSection will never be called.
#pragma pack(push, 1)
struct X_RTL_CRITICAL_SECTION {
uint8_t unknown00;
uint8_t spin_count_div_256; // * 256
uint16_t __padding0;
uint32_t __padding1;
// uint32_t unknown04; // maybe the handle to the event?
uint32_t queue_head; // head of queue, pointing to this offset
uint32_t queue_tail; // tail of queue?
int32_t lock_count; // -1 -> 0 on first lock 0x10
uint32_t recursion_count; // 0 -> 1 on first lock 0x14
uint32_t owning_thread_id; // 0 unless locked 0x18
xe::be<uint8_t> unk_00; // 0x0
xe::be<uint8_t> spin_count_div_256; // 0x1
xe::be<uint16_t> __padding0; // 0x2
xe::be<uint32_t> unk_04; // 0x4 maybe the handle to the event?
xe::be<uint32_t> queue_head; // 0x8 head of queue, pointing to this offset
xe::be<uint32_t> queue_tail; // 0xC tail of queue?
int32_t lock_count; // 0x10 -1 -> 0 on first lock 0x10
xe::be<int32_t> recursion_count; // 0x14 0 -> 1 on first lock 0x14
xe::be<uint32_t> owning_thread_id; // 0x18 0 unless locked 0x18
};
#pragma pack(pop)
static_assert_size(X_RTL_CRITICAL_SECTION, 28);
void xeRtlInitializeCriticalSection(X_RTL_CRITICAL_SECTION* cs,
uint32_t cs_ptr) {
// VOID
// _Out_ LPCRITICAL_SECTION lpCriticalSection
cs->unknown00 = 1;
cs->unk_00 = 1;
cs->spin_count_div_256 = 0;
cs->queue_head = cs_ptr + 8;
cs->queue_tail = cs_ptr + 8;
@ -320,31 +316,22 @@ void xeRtlInitializeCriticalSection(X_RTL_CRITICAL_SECTION* cs,
cs->owning_thread_id = 0;
}
SHIM_CALL RtlInitializeCriticalSection_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t cs_ptr = SHIM_GET_ARG_32(0);
XELOGD("RtlInitializeCriticalSection(%.8X)", cs_ptr);
auto cs = (X_RTL_CRITICAL_SECTION*)SHIM_MEM_ADDR(cs_ptr);
xeRtlInitializeCriticalSection(cs, cs_ptr);
void RtlInitializeCriticalSection(pointer_t<X_RTL_CRITICAL_SECTION> cs) {
xeRtlInitializeCriticalSection(cs, cs.guest_address());
}
DECLARE_XBOXKRNL_EXPORT(RtlInitializeCriticalSection, ExportTag::kImplemented);
X_STATUS xeRtlInitializeCriticalSectionAndSpinCount(X_RTL_CRITICAL_SECTION* cs,
uint32_t cs_ptr,
uint32_t spin_count) {
// NTSTATUS
// _Out_ LPCRITICAL_SECTION lpCriticalSection,
// _In_ DWORD dwSpinCount
// Spin count is rouned up to 256 intervals then packed in.
// Spin count is rounded up to 256 intervals then packed in.
// uint32_t spin_count_div_256 = (uint32_t)floor(spin_count / 256.0f + 0.5f);
uint32_t spin_count_div_256 = (spin_count + 255) >> 8;
if (spin_count_div_256 > 255) {
spin_count_div_256 = 255;
}
cs->unknown00 = 1;
cs->unk_00 = 1;
cs->spin_count_div_256 = spin_count_div_256;
cs->queue_head = cs_ptr + 8;
cs->queue_tail = cs_ptr + 8;
@ -355,19 +342,13 @@ X_STATUS xeRtlInitializeCriticalSectionAndSpinCount(X_RTL_CRITICAL_SECTION* cs,
return X_STATUS_SUCCESS;
}
SHIM_CALL RtlInitializeCriticalSectionAndSpinCount_shim(
PPCContext* ppc_context, KernelState* kernel_state) {
uint32_t cs_ptr = SHIM_GET_ARG_32(0);
uint32_t spin_count = SHIM_GET_ARG_32(1);
XELOGD("RtlInitializeCriticalSectionAndSpinCount(%.8X, %u)", cs_ptr,
dword_result_t RtlInitializeCriticalSectionAndSpinCount(
pointer_t<X_RTL_CRITICAL_SECTION> cs, dword_t spin_count) {
return xeRtlInitializeCriticalSectionAndSpinCount(cs, cs.guest_address(),
spin_count);
auto cs = (X_RTL_CRITICAL_SECTION*)SHIM_MEM_ADDR(cs_ptr);
X_STATUS result =
xeRtlInitializeCriticalSectionAndSpinCount(cs, cs_ptr, spin_count);
SHIM_SET_RETURN_32(result);
}
DECLARE_XBOXKRNL_EXPORT(RtlInitializeCriticalSectionAndSpinCount,
ExportTag::kImplemented);
SHIM_CALL RtlEnterCriticalSection_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
@ -377,12 +358,11 @@ SHIM_CALL RtlEnterCriticalSection_shim(PPCContext* ppc_context,
// XELOGD("RtlEnterCriticalSection(%.8X)", cs_ptr);
const uint8_t* pcr = SHIM_MEM_ADDR(ppc_context->r[13]);
uint32_t thread_id = XThread::GetCurrentThreadId(pcr);
uint32_t thread_id = XThread::GetCurrentThreadId();
auto cs = (X_RTL_CRITICAL_SECTION*)SHIM_MEM_ADDR(cs_ptr);
uint32_t spin_wait_remaining = cs->spin_count_div_256 * 256;
spin:
if (xe::atomic_inc(&cs->lock_count) != 0) {
// If this thread already owns the CS increment the recursion count.
@ -419,8 +399,7 @@ SHIM_CALL RtlTryEnterCriticalSection_shim(PPCContext* ppc_context,
// XELOGD("RtlTryEnterCriticalSection(%.8X)", cs_ptr);
const uint8_t* pcr = SHIM_MEM_ADDR(ppc_context->r[13]);
uint32_t thread_id = XThread::GetCurrentThreadId(pcr);
uint32_t thread_id = XThread::GetCurrentThreadId();
auto cs = (X_RTL_CRITICAL_SECTION*)SHIM_MEM_ADDR(cs_ptr);
@ -446,16 +425,22 @@ SHIM_CALL RtlLeaveCriticalSection_shim(PPCContext* ppc_context,
// XELOGD("RtlLeaveCriticalSection(%.8X)", cs_ptr);
// FYI: No need to check if the owning thread is calling this, as that should
// be the only case.
auto cs = (X_RTL_CRITICAL_SECTION*)SHIM_MEM_ADDR(cs_ptr);
// Drop recursion count - if we are still not zero'ed return.
uint32_t recursion_count = --cs->recursion_count;
int32_t recursion_count = --cs->recursion_count;
assert_true(recursion_count > -1);
if (recursion_count) {
assert_true(cs->recursion_count > 0);
xe::atomic_dec(&cs->lock_count);
return;
}
// Unlock!
// Not owned - unlock!
cs->owning_thread_id = 0;
if (xe::atomic_dec(&cs->lock_count) != -1) {
// There were waiters - wake one of them.
@ -530,9 +515,6 @@ void xe::kernel::xboxkrnl::RegisterRtlExports(
SHIM_SET_MAPPING("xboxkrnl.exe", RtlMultiByteToUnicodeN, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlUnicodeToMultiByteN, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlInitializeCriticalSection, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlInitializeCriticalSectionAndSpinCount,
state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlEnterCriticalSection, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlTryEnterCriticalSection, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlLeaveCriticalSection, state);