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RtlMultiByteToUnicodeN.

This commit is contained in:
gibbed 2014-01-12 00:22:43 -08:00
parent bd74c544c6
commit 6c62b2796a
1 changed files with 31 additions and 0 deletions
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31
src/xenia/kernel/xboxkrnl_rtl.cc
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@ -349,6 +349,36 @@ SHIM_CALL RtlUnicodeStringToAnsiString_shim(
}
SHIM_CALL RtlMultiByteToUnicodeN_shim(
PPCContext* ppc_state, KernelState* 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
auto source = (uint8_t*)SHIM_MEM_ADDR(source_ptr);
auto destination = (uint16_t*)SHIM_MEM_ADDR(destination_ptr);
for (int i = 0; i < copy_len; i++)
{
*destination++ = XESWAP16(*source++);
}
if (written_ptr != 0)
{
SHIM_SET_MEM_32(written_ptr, copy_len << 1);
}
SHIM_SET_RETURN(0);
}
// TODO: clean me up!
SHIM_CALL _vsnprintf_shim(
PPCContext* ppc_state, KernelState* state) {
@ -936,6 +966,7 @@ void xe::kernel::xboxkrnl::RegisterRtlExports(
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", _vsnprintf, state);