FEX-Emu/FEX
1
0
Fork 0
mirror of https://github.com/FEX-Emu/FEX.git synced 2025-01-07 14:10:23 +00:00
Code Issues Actions 6 Packages Projects Releases Wiki Activity

Merge pull request #4044 from bylaws/int2e

Browse Source 
OpcodeDispatcher: Do not forbid INT 2E syscalls on 64-bit Windows
This commit is contained in:
Ryan Houdek 2024-09-06 10:18:18 -07:00 committed by GitHub
commit bbef4d762c
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
View File

@ -4656,9 +4656,6 @@ void OpDispatchBuilder::INTOp(OpcodeArgs) {
#ifndef _WIN32
constexpr uint8_t SYSCALL_LITERAL = 0x80;
#else
constexpr uint8_t SYSCALL_LITERAL = 0x2E;
#endif
if (Literal == SYSCALL_LITERAL) {
if (CTX->Config.Is64BitMode()) [[unlikely]] {
ERROR_AND_DIE_FMT("[Unsupported] Trying to execute 32-bit syscall from a 64-bit process.");
@ -4667,6 +4664,14 @@ void OpDispatchBuilder::INTOp(OpcodeArgs) {
SyscallOp(Op, false);
return;
}
#else
constexpr uint8_t SYSCALL_LITERAL = 0x2E;
if (Literal == SYSCALL_LITERAL) {
// Can be used for both 64-bit and 32-bit syscalls on windows
SyscallOp(Op, false);
return;
}
#endif
#ifdef _M_ARM_64EC
// This is used when QueryPerformanceCounter is called on recent Windows versions, it causes CNTVCT to be written into RAX.