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Implementing RtlCompareString/RtlCompareStringN. Fixes #162.

This commit is contained in:
Ben Vanik 2015-02-13 10:43:56 -08:00
parent de5bad5fb2
commit 6598556446
1 changed files with 46 additions and 0 deletions
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46
src/xenia/kernel/xboxkrnl_rtl.cc
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@ -118,6 +118,49 @@ SHIM_CALL RtlFillMemoryUlong_shim(PPCContext* ppc_state, KernelState* state) {
}
}
SHIM_CALL RtlCompareString_shim(PPCContext* ppc_state, KernelState* 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_state, KernelState* 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)", 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 = std::strlen(string_1);
}
if (string_2_len == 0xFFFF) {
string_2_len = 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;
@ -643,6 +686,9 @@ void xe::kernel::xboxkrnl::RegisterRtlExports(ExportResolver* export_resolver,
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);