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xenia/src/xenia/kernel/xboxkrnl_rtl.cc

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/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2013 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#include "xenia/kernel/xboxkrnl_rtl.h"
#include <algorithm>
#include "xenia/base/atomic.h"
#include "xenia/base/logging.h"
#include "xenia/base/string.h"
#include "xenia/kernel/kernel_state.h"
#include "xenia/kernel/xboxkrnl_private.h"
#include "xenia/kernel/objects/xthread.h"
#include "xenia/kernel/objects/xuser_module.h"
#include "xenia/kernel/util/shim_utils.h"
#include "xenia/kernel/util/xex2.h"
namespace xe {
namespace kernel {
// http://msdn.microsoft.com/en-us/library/ff561778
SHIM_CALL RtlCompareMemory_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t source1_ptr = SHIM_GET_ARG_32(0);
uint32_t source2_ptr = SHIM_GET_ARG_32(1);
uint32_t length = SHIM_GET_ARG_32(2);
XELOGD("RtlCompareMemory(%.8X, %.8X, %d)", source1_ptr, source2_ptr, length);
// SIZE_T
// _In_ const VOID *Source1,
// _In_ const VOID *Source2,
// _In_ SIZE_T Length
uint8_t* p1 = SHIM_MEM_ADDR(source1_ptr);
uint8_t* p2 = SHIM_MEM_ADDR(source2_ptr);
// Note that the return value is the number of bytes that match, so it's best
// we just do this ourselves vs. using memcmp.
// On Windows we could use the builtin function.
uint32_t c = 0;
for (uint32_t n = 0; n < length; n++, p1++, p2++) {
if (*p1 == *p2) {
c++;
}
}
SHIM_SET_RETURN_32(c);
}
// http://msdn.microsoft.com/en-us/library/ff552123
SHIM_CALL RtlCompareMemoryUlong_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t source_ptr = SHIM_GET_ARG_32(0);
uint32_t length = SHIM_GET_ARG_32(1);
uint32_t pattern = SHIM_GET_ARG_32(2);
XELOGD("RtlCompareMemoryUlong(%.8X, %d, %.8X)", source_ptr, length, pattern);
// SIZE_T
// _In_ PVOID Source,
// _In_ SIZE_T Length,
// _In_ ULONG Pattern
if ((source_ptr % 4) || (length % 4)) {
SHIM_SET_RETURN_32(0);
return;
}
uint8_t* p = SHIM_MEM_ADDR(source_ptr);
// Swap pattern.
// TODO(benvanik): ensure byte order of pattern is correct.
// Since we are doing byte-by-byte comparison we may not want to swap.
// GET_ARG swaps, so this is a swap back. Ugly.
const uint32_t pb32 = xe::byte_swap(pattern);
const uint8_t* pb = (uint8_t*)&pb32;
uint32_t c = 0;
for (uint32_t n = 0; n < length; n++, p++) {
if (*p == pb[n % 4]) {
c++;
}
}
SHIM_SET_RETURN_32(c);
}
// http://msdn.microsoft.com/en-us/library/ff552263
SHIM_CALL RtlFillMemoryUlong_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t destination_ptr = SHIM_GET_ARG_32(0);
uint32_t length = SHIM_GET_ARG_32(1);
uint32_t pattern = SHIM_GET_ARG_32(2);
XELOGD("RtlFillMemoryUlong(%.8X, %d, %.8X)", destination_ptr, length,
pattern);
// VOID
// _Out_ PVOID Destination,
// _In_ SIZE_T Length,
// _In_ ULONG Pattern
// NOTE: length must be % 4, so we can work on uint32s.
uint32_t* p = (uint32_t*)SHIM_MEM_ADDR(destination_ptr);
// TODO(benvanik): ensure byte order is correct - we're writing back the
// swapped arg value.
uint32_t count = length >> 2;
uint32_t native_pattern = xe::byte_swap(pattern);
// TODO: unroll loop?
for (uint32_t n = 0; n < count; n++, p++) {
*p = native_pattern;
}
}
SHIM_CALL RtlCompareString_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t string_1_ptr = SHIM_GET_ARG_32(0);
uint32_t string_2_ptr = SHIM_GET_ARG_32(1);
uint32_t case_insensitive = SHIM_GET_ARG_32(2);
XELOGD("RtlCompareString(%.8X, %.8X, %d)", string_1_ptr, string_2_ptr,
case_insensitive);
auto string_1 = reinterpret_cast<const char*>(SHIM_MEM_ADDR(string_1_ptr));
auto string_2 = reinterpret_cast<const char*>(SHIM_MEM_ADDR(string_2_ptr));
int ret = case_insensitive ? strcasecmp(string_1, string_2)
: std::strcmp(string_1, string_2);
SHIM_SET_RETURN_32(ret);
}
SHIM_CALL RtlCompareStringN_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t string_1_ptr = SHIM_GET_ARG_32(0);
uint32_t string_1_len = SHIM_GET_ARG_32(1);
uint32_t string_2_ptr = SHIM_GET_ARG_32(2);
uint32_t string_2_len = SHIM_GET_ARG_32(3);
uint32_t case_insensitive = SHIM_GET_ARG_32(4);
XELOGD("RtlCompareStringN(%.8X, %d, %.8X, %d, %d)", string_1_ptr,
string_1_len, string_2_ptr, string_2_len, case_insensitive);
auto string_1 = reinterpret_cast<const char*>(SHIM_MEM_ADDR(string_1_ptr));
auto string_2 = reinterpret_cast<const char*>(SHIM_MEM_ADDR(string_2_ptr));
if (string_1_len == 0xFFFF) {
string_1_len = uint32_t(std::strlen(string_1));
}
if (string_2_len == 0xFFFF) {
string_2_len = uint32_t(std::strlen(string_2));
}
auto len = std::min(string_1_len, string_2_len);
int ret = case_insensitive ? strncasecmp(string_1, string_2, len)
: std::strncmp(string_1, string_2, len);
SHIM_SET_RETURN_32(ret);
}
// typedef struct _STRING {
// USHORT Length;
// USHORT MaximumLength;
// PCHAR Buffer;
// } ANSI_STRING, *PANSI_STRING;
// http://msdn.microsoft.com/en-us/library/ff561918
SHIM_CALL RtlInitAnsiString_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t destination_ptr = SHIM_GET_ARG_32(0);
uint32_t source_ptr = SHIM_GET_ARG_32(1);
const char* source = source_ptr ? (char*)SHIM_MEM_ADDR(source_ptr) : nullptr;
XELOGD("RtlInitAnsiString(%.8X, %.8X = %s)", destination_ptr, source_ptr,
source ? source : "<null>");
// VOID
// _Out_ PANSI_STRING DestinationString,
// _In_opt_ PCSZ SourceString
if (source_ptr != 0) {
uint16_t length = (uint16_t)strlen(source);
SHIM_SET_MEM_16(destination_ptr + 0, length);
SHIM_SET_MEM_16(destination_ptr + 2, length + 1);
} else {
SHIM_SET_MEM_16(destination_ptr + 0, 0);
SHIM_SET_MEM_16(destination_ptr + 2, 0);
}
SHIM_SET_MEM_32(destination_ptr + 4, source_ptr);
}
// http://msdn.microsoft.com/en-us/library/ff561899
SHIM_CALL RtlFreeAnsiString_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t string_ptr = SHIM_GET_ARG_32(0);
XELOGD("RtlFreeAnsiString(%.8X)", string_ptr);
// VOID
// _Inout_ PANSI_STRING AnsiString
uint32_t buffer = SHIM_MEM_32(string_ptr + 4);
if (!buffer) {
return;
}
uint32_t length = SHIM_MEM_16(string_ptr + 2);
kernel_state->memory()->SystemHeapFree(buffer);
SHIM_SET_MEM_16(string_ptr + 0, 0);
SHIM_SET_MEM_16(string_ptr + 2, 0);
SHIM_SET_MEM_32(string_ptr + 4, 0);
}
// typedef struct _UNICODE_STRING {
// USHORT Length;
// USHORT MaximumLength;
// PWSTR Buffer;
// } UNICODE_STRING, *PUNICODE_STRING;
// http://msdn.microsoft.com/en-us/library/ff561934
SHIM_CALL RtlInitUnicodeString_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t destination_ptr = SHIM_GET_ARG_32(0);
uint32_t source_ptr = SHIM_GET_ARG_32(1);
auto source = source_ptr
? xe::load_and_swap<std::wstring>(SHIM_MEM_ADDR(source_ptr))
: L"";
XELOGD("RtlInitUnicodeString(%.8X, %.8X = %ls)", destination_ptr, source_ptr,
source.empty() ? L"<null>" : source.c_str());
// VOID
// _Out_ PUNICODE_STRING DestinationString,
// _In_opt_ PCWSTR SourceString
if (source.size()) {
SHIM_SET_MEM_16(destination_ptr + 0,
static_cast<uint16_t>(source.size() * 2));
SHIM_SET_MEM_16(destination_ptr + 2,
static_cast<uint16_t>((source.size() + 1) * 2));
SHIM_SET_MEM_32(destination_ptr + 4, source_ptr);
} else {
SHIM_SET_MEM_16(destination_ptr + 0, 0);
SHIM_SET_MEM_16(destination_ptr + 2, 0);
SHIM_SET_MEM_32(destination_ptr + 4, 0);
}
}
// http://msdn.microsoft.com/en-us/library/ff561903
SHIM_CALL RtlFreeUnicodeString_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t string_ptr = SHIM_GET_ARG_32(0);
XELOGD("RtlFreeUnicodeString(%.8X)", string_ptr);
// VOID
// _Inout_ PUNICODE_STRING UnicodeString
uint32_t buffer = SHIM_MEM_32(string_ptr + 4);
if (!buffer) {
return;
}
uint32_t length = SHIM_MEM_16(string_ptr + 2);
kernel_state->memory()->SystemHeapFree(buffer);
SHIM_SET_MEM_16(string_ptr + 0, 0);
SHIM_SET_MEM_16(string_ptr + 2, 0);
SHIM_SET_MEM_32(string_ptr + 4, 0);
}
// http://msdn.microsoft.com/en-us/library/ff562969
SHIM_CALL RtlUnicodeStringToAnsiString_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t destination_ptr = SHIM_GET_ARG_32(0);
uint32_t source_ptr = SHIM_GET_ARG_32(1);
uint32_t alloc_dest = SHIM_GET_ARG_32(2);
XELOGD("RtlUnicodeStringToAnsiString(%.8X, %.8X, %d)", destination_ptr,
source_ptr, alloc_dest);
// NTSTATUS
// _Inout_ PANSI_STRING DestinationString,
// _In_ PCUNICODE_STRING SourceString,
// _In_ BOOLEAN AllocateDestinationString
std::wstring unicode_str = xe::load_and_swap<std::wstring>(
SHIM_MEM_ADDR(SHIM_MEM_32(source_ptr + 4)));
std::string ansi_str = xe::to_string(unicode_str);
if (ansi_str.size() > 0xFFFF - 1) {
SHIM_SET_RETURN_32(X_STATUS_INVALID_PARAMETER_2);
return;
}
X_STATUS result = X_STATUS_SUCCESS;
if (alloc_dest) {
uint32_t buffer_ptr =
kernel_state->memory()->SystemHeapAlloc(uint32_t(ansi_str.size() + 1));
memcpy(SHIM_MEM_ADDR(buffer_ptr), ansi_str.data(), ansi_str.size() + 1);
SHIM_SET_MEM_16(destination_ptr + 0,
static_cast<uint16_t>(ansi_str.size()));
SHIM_SET_MEM_16(destination_ptr + 2,
static_cast<uint16_t>(ansi_str.size() + 1));
SHIM_SET_MEM_32(destination_ptr + 4, static_cast<uint32_t>(buffer_ptr));
} else {
uint32_t buffer_capacity = SHIM_MEM_16(destination_ptr + 2);
uint32_t buffer_ptr = SHIM_MEM_32(destination_ptr + 4);
if (buffer_capacity < ansi_str.size() + 1) {
// Too large - we just write what we can.
result = X_STATUS_BUFFER_OVERFLOW;
memcpy(SHIM_MEM_ADDR(buffer_ptr), ansi_str.data(), buffer_capacity - 1);
} else {
memcpy(SHIM_MEM_ADDR(buffer_ptr), ansi_str.data(), ansi_str.size() + 1);
}
SHIM_SET_MEM_8(buffer_ptr + buffer_capacity - 1, 0); // \0
}
SHIM_SET_RETURN_32(result);
}
SHIM_CALL RtlMultiByteToUnicodeN_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t destination_ptr = SHIM_GET_ARG_32(0);
uint32_t destination_len = SHIM_GET_ARG_32(1);
uint32_t written_ptr = SHIM_GET_ARG_32(2);
uint32_t source_ptr = SHIM_GET_ARG_32(3);
uint32_t source_len = SHIM_GET_ARG_32(4);
uint32_t copy_len = destination_len >> 1;
copy_len = copy_len < source_len ? copy_len : source_len;
// TODO: maybe use MultiByteToUnicode on Win32? would require swapping
for (uint32_t i = 0; i < copy_len; i++) {
xe::store_and_swap<uint16_t>(
SHIM_MEM_ADDR(destination_ptr + i * 2),
xe::load<uint8_t>(SHIM_MEM_ADDR(source_ptr + i)));
}
if (written_ptr != 0) {
SHIM_SET_MEM_32(written_ptr, copy_len << 1);
}
SHIM_SET_RETURN_32(0);
}
SHIM_CALL RtlUnicodeToMultiByteN_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t destination_ptr = SHIM_GET_ARG_32(0);
uint32_t destination_len = SHIM_GET_ARG_32(1);
uint32_t written_ptr = SHIM_GET_ARG_32(2);
uint32_t source_ptr = SHIM_GET_ARG_32(3);
uint32_t source_len = SHIM_GET_ARG_32(4);
uint32_t copy_len = source_len >> 1;
copy_len = copy_len < destination_len ? copy_len : destination_len;
// TODO: maybe use UnicodeToMultiByte on Win32?
auto source = (uint16_t*)SHIM_MEM_ADDR(source_ptr);
auto destination = (uint8_t*)SHIM_MEM_ADDR(destination_ptr);
for (uint32_t i = 0; i < copy_len; i++) {
uint16_t c = xe::byte_swap(*source++);
*destination++ = c < 256 ? (uint8_t)c : '?';
}
if (written_ptr != 0) {
SHIM_SET_MEM_32(written_ptr, copy_len);
}
SHIM_SET_RETURN_32(0);
}
SHIM_CALL RtlImageXexHeaderField_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t xex_header_base = SHIM_GET_ARG_32(0);
uint32_t image_field = SHIM_GET_ARG_32(1);
// NOTE: this is totally faked!
// We set the XexExecutableModuleHandle pointer to a block that has at offset
// 0x58 a pointer to our XexHeaderBase. If the value passed doesn't match
// then die.
// The only ImageField I've seen in the wild is
// 0x20401 (XEX_HEADER_DEFAULT_HEAP_SIZE), so that's all we'll support.
XELOGD("RtlImageXexHeaderField(%.8X, %.8X)", xex_header_base, image_field);
// PVOID
// PVOID XexHeaderBase
// DWORD ImageField
// NOTE: this is totally faked!
// We set the XexExecutableModuleHandle pointer to a block that has at offset
// 0x58 a pointer to our XexHeaderBase. If the value passed doesn't match
// then die.
// TODO(benvanik): use xex_header_base to dereference this.
// Right now we are only concerned with games making this call on their main
// module, so this hack is fine.
assert_true(xex_header_base == 0x80101100);
auto module = kernel_state->GetExecutableModule();
// Special case.
if (image_field == XEX_HEADER_EXECUTION_INFO) {
SHIM_SET_RETURN_32(module->execution_info_ptr());
return;
}
const xe_xex2_header_t* xex_header = module->xex_header();
for (size_t n = 0; n < xex_header->header_count; n++) {
if (xex_header->headers[n].key == image_field) {
uint32_t value = xex_header->headers[n].value;
SHIM_SET_RETURN_32(value);
return;
}
}
// Some games seem to expect 0xC0000225 for not-found results, while
// others will explode if it's not zero. Maybe there are default headers?
switch (image_field) {
case 0x20401: // XEX_HEADER_DEFAULT_HEAP_SIZE
SHIM_SET_RETURN_32(0);
break;
default:
SHIM_SET_RETURN_32(X_STATUS_NOT_FOUND);
break;
}
}
// Unfortunately the Windows RTL_CRITICAL_SECTION object is bigger than the one
// on the 360 (32b vs. 28b). This means that we can't do in-place splatting of
// the critical sections. Also, the 360 never calls RtlDeleteCriticalSection
// so we can't clean up the native handles.
//
// Because of this, we reimplement it poorly. Hooray.
// We have 28b to work with so we need to be careful. We map our struct directly
// into guest memory, as it should be opaque and so long as our size is right
// the user code will never know.
//
// Ref: http://msdn.microsoft.com/en-us/magazine/cc164040.aspx
// Ref:
// http://svn.reactos.org/svn/reactos/trunk/reactos/lib/rtl/critical.c?view=markup
// This structure tries to match the one on the 360 as best I can figure out.
// Unfortunately some games have the critical sections pre-initialized in
// 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
};
#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->spin_count_div_256 = 0;
cs->queue_head = cs_ptr + 8;
cs->queue_tail = cs_ptr + 8;
cs->lock_count = -1;
cs->recursion_count = 0;
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);
}
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.
// 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->spin_count_div_256 = spin_count_div_256;
cs->queue_head = cs_ptr + 8;
cs->queue_tail = cs_ptr + 8;
cs->lock_count = -1;
cs->recursion_count = 0;
cs->owning_thread_id = 0;
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,
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);
}
SHIM_CALL RtlEnterCriticalSection_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
// VOID
// _Inout_ LPCRITICAL_SECTION lpCriticalSection
uint32_t cs_ptr = SHIM_GET_ARG_32(0);
// XELOGD("RtlEnterCriticalSection(%.8X)", cs_ptr);
const uint8_t* pcr = SHIM_MEM_ADDR(ppc_context->r[13]);
uint32_t thread_id = XThread::GetCurrentThreadId(pcr);
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.
if (cs->owning_thread_id == thread_id) {
cs->recursion_count++;
return;
}
xe::atomic_dec(&cs->lock_count);
// Thread was locked - spin wait.
if (spin_wait_remaining) {
spin_wait_remaining--;
goto spin;
}
// All out of spin waits, create a full waiter.
// TODO(benvanik): contention - do a real wait!
// XELOGE("RtlEnterCriticalSection tried to really lock!");
spin_wait_remaining = 0; // HACK: spin forever
SwitchToThread();
goto spin;
}
// Now own the lock.
cs->owning_thread_id = thread_id;
cs->recursion_count = 1;
}
SHIM_CALL RtlTryEnterCriticalSection_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
// DWORD
// _Inout_ LPCRITICAL_SECTION lpCriticalSection
uint32_t cs_ptr = SHIM_GET_ARG_32(0);
// XELOGD("RtlTryEnterCriticalSection(%.8X)", cs_ptr);
const uint8_t* pcr = SHIM_MEM_ADDR(ppc_context->r[13]);
uint32_t thread_id = XThread::GetCurrentThreadId(pcr);
auto cs = (X_RTL_CRITICAL_SECTION*)SHIM_MEM_ADDR(cs_ptr);
uint32_t result = 0;
if (xe::atomic_cas(-1, 0, &cs->lock_count)) {
// Able to steal the lock right away.
cs->owning_thread_id = thread_id;
cs->recursion_count = 1;
result = 1;
} else if (cs->owning_thread_id == thread_id) {
xe::atomic_inc(&cs->lock_count);
++cs->recursion_count;
result = 1;
}
SHIM_SET_RETURN_32(result);
}
SHIM_CALL RtlLeaveCriticalSection_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
// VOID
// _Inout_ LPCRITICAL_SECTION lpCriticalSection
uint32_t cs_ptr = SHIM_GET_ARG_32(0);
// XELOGD("RtlLeaveCriticalSection(%.8X)", cs_ptr);
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;
if (recursion_count) {
xe::atomic_dec(&cs->lock_count);
return;
}
// Unlock!
cs->owning_thread_id = 0;
if (xe::atomic_dec(&cs->lock_count) != -1) {
// There were waiters - wake one of them.
// TODO(benvanik): wake a waiter.
XELOGE("RtlLeaveCriticalSection would have woken a waiter");
}
XThread::GetCurrentThread()->CheckApcs();
}
SHIM_CALL RtlTimeToTimeFields_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t time_ptr = SHIM_GET_ARG_32(0);
uint32_t time_fields_ptr = SHIM_GET_ARG_32(1);
XELOGD("RtlTimeToTimeFields(%.8X, %.8X)", time_ptr, time_fields_ptr);
uint64_t time = SHIM_MEM_64(time_ptr);
FILETIME ft;
ft.dwHighDateTime = time >> 32;
ft.dwLowDateTime = (uint32_t)time;
SYSTEMTIME st;
FileTimeToSystemTime(&ft, &st);
SHIM_SET_MEM_16(time_fields_ptr + 0, st.wYear);
SHIM_SET_MEM_16(time_fields_ptr + 2, st.wMonth);
SHIM_SET_MEM_16(time_fields_ptr + 4, st.wDay);
SHIM_SET_MEM_16(time_fields_ptr + 6, st.wHour);
SHIM_SET_MEM_16(time_fields_ptr + 8, st.wMinute);
SHIM_SET_MEM_16(time_fields_ptr + 10, st.wSecond);
SHIM_SET_MEM_16(time_fields_ptr + 12, st.wMilliseconds);
}
SHIM_CALL RtlTimeFieldsToTime_shim(PPCContext* ppc_context,
KernelState* kernel_state) {
uint32_t time_fields_ptr = SHIM_GET_ARG_32(0);
uint32_t time_ptr = SHIM_GET_ARG_32(1);
XELOGD("RtlTimeFieldsToTime(%.8X, %.8X)", time_fields_ptr, time_ptr);
SYSTEMTIME st;
st.wYear = SHIM_MEM_16(time_fields_ptr + 0);
st.wMonth = SHIM_MEM_16(time_fields_ptr + 2);
st.wDay = SHIM_MEM_16(time_fields_ptr + 4);
st.wHour = SHIM_MEM_16(time_fields_ptr + 6);
st.wMinute = SHIM_MEM_16(time_fields_ptr + 8);
st.wSecond = SHIM_MEM_16(time_fields_ptr + 10);
st.wMilliseconds = SHIM_MEM_16(time_fields_ptr + 12);
FILETIME ft;
if (!SystemTimeToFileTime(&st, &ft)) {
// set last error = ERROR_INVALID_PARAMETER
SHIM_SET_RETURN_32(0);
return;
}
uint64_t time = (uint64_t(ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
SHIM_SET_MEM_64(time_ptr, time);
SHIM_SET_RETURN_32(1);
}
} // namespace kernel
} // namespace xe
void xe::kernel::xboxkrnl::RegisterRtlExports(
xe::cpu::ExportResolver* export_resolver, KernelState* kernel_state) {
SHIM_SET_MAPPING("xboxkrnl.exe", RtlCompareMemory, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlCompareMemoryUlong, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlFillMemoryUlong, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlCompareString, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlCompareStringN, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlInitAnsiString, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlFreeAnsiString, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlInitUnicodeString, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlFreeUnicodeString, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlUnicodeStringToAnsiString, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlMultiByteToUnicodeN, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlUnicodeToMultiByteN, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlTimeToTimeFields, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlTimeFieldsToTime, state);
SHIM_SET_MAPPING("xboxkrnl.exe", RtlImageXexHeaderField, 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);
}
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