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

[Kernel] Add _vsnwprintf export

This commit is contained in:
emoose 2018-10-22 17:54:20 +01:00 committed by gibbed
parent 8efbe32867
commit 65e8872dc1
1 changed files with 41 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
src/xenia/kernel/xboxkrnl/xboxkrnl_strings.cc
View File

@ -1009,6 +1009,46 @@ SHIM_CALL _vsnprintf_shim(PPCContext* ppc_context, KernelState* kernel_state) {
SHIM_SET_RETURN_32(count);
}
// https://msdn.microsoft.com/en-us/library/1kt27hek.aspx
SHIM_CALL _vsnwprintf_shim(PPCContext* ppc_context, KernelState* kernel_state) {
uint32_t buffer_ptr = SHIM_GET_ARG_32(0);
int32_t buffer_count = SHIM_GET_ARG_32(1);
uint32_t format_ptr = SHIM_GET_ARG_32(2);
uint32_t arg_ptr = SHIM_GET_ARG_32(3);
XELOGD("_vsnwprintf(%08X, %i, %08X, %08X)", buffer_ptr, buffer_count,
format_ptr, arg_ptr);
if (buffer_ptr == 0 || buffer_count <= 0 || format_ptr == 0) {
SHIM_SET_RETURN_32(-1);
return;
}
auto buffer = (uint16_t*)SHIM_MEM_ADDR(buffer_ptr);
auto format = (const uint16_t*)SHIM_MEM_ADDR(format_ptr);
ArrayArgList args(ppc_context, arg_ptr);
WideStringFormatData data(format);
int32_t count = format_core(ppc_context, data, args, true);
if (count < 0) {
// Error.
if (buffer_count > 0) {
buffer[0] = '\0'; // write a null, just to be safe
}
} else if (count <= buffer_count) {
// Fit within the buffer.
xe::copy_and_swap(buffer, (uint16_t*)data.wstr().c_str(), count);
if (count < buffer_count) {
buffer[count] = '\0';
}
} else {
// Overflowed buffer. We still return the count we would have written.
xe::copy_and_swap(buffer, (uint16_t*)data.wstr().c_str(), buffer_count);
}
SHIM_SET_RETURN_32(count);
}
// https://msdn.microsoft.com/en-us/library/28d5ce15.aspx
SHIM_CALL vsprintf_shim(PPCContext* ppc_context, KernelState* kernel_state) {
uint32_t buffer_ptr = SHIM_GET_ARG_32(0);
@ -1100,6 +1140,7 @@ void RegisterStringExports(xe::cpu::ExportResolver* export_resolver,
SHIM_SET_MAPPING("xboxkrnl.exe", vsprintf, state);
SHIM_SET_MAPPING("xboxkrnl.exe", _vscwprintf, state);
SHIM_SET_MAPPING("xboxkrnl.exe", vswprintf, state);
SHIM_SET_MAPPING("xboxkrnl.exe", _vsnwprintf, state);
}
} // namespace xboxkrnl