Unsupported x86 opcode 0F 3F when running "visual novel game" on ARM64 with Wine

[as14725836]

Body:

When executing the game program with Box64, a crash occurs consistently at the same x86 address, irrespective of the Dynarec setting (BOX64_DYNAREC=0 or =1). The crash results from a SIGILL (Illegal Instruction) signal, indicating that Box64 is unable to handle the x86 opcode 0F 3F. This opcode is non-standard and rarely seen in normal applications; it is suspected to be part of the game's copy protection or anti-tampering mechanism.

Crash Log:

0x595a2f: Dynarec stopped because of x86 Opcode 0F 3F 07 0B 64 8F 05 00 00 00 00 83 C4 04 83
SIGILL: Opcode at ip is 0f 3f 07 0b 64 8f

Environment:

· Box64: v0.4.5
· Architecture: ARM64 (Cortex-A510)
· OS: Android (Termux)
· Wine: 10.0-4proton-vanilla-wow64

BOX64_DYNAREC=0-trace-28042-1.txt

BOX64_DYNAREC=1-trace-28721-1.txt

[ptitSeb]

The Opcode listed doesn't exist, it's a valid SIGILL signal. According to the trace, the program seems obfuscated and it's probable that the emulation fails to the obfuscation runtime at some point, leading to the SIGILL.
This needs to be debugged localy, is the program free to download?

[as14725836]

The Opcode listed doesn't exist, it's a valid SIGILL signal. According to the trace, the program seems obfuscated and it's probable that the emulation fails to the obfuscation runtime at some point, leading to the SIGILL. This needs to be debugged localy, is the program free to download?

https://drive.google.com/file/d/1YMDP4XGQ2LnJO5MXk9h_9NbHPoMcnNKC/view?usp=sharing

[Waim908]

Even without box64, running Wine natively on a PC results in this null-pointer error under WOW64, preventing it from launching, whereas the x86 version of Wine runs normally.