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Invalidate code that HLE and the debugger write over

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Helper thread stubs, fake syscall stubs and the module start trampoline go into memory that may
have held code (freed kernel memory, a reused thread stack), and the debugger memory views can
edit code. Invalidate what they write, which so far only happened by accident when the write hit
the first instruction of a JIT block.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Henrik RydgårdandClaude Opus 5.5 committed 2026-10-11 10:33:30 +02:00
1 parent 59fed92dac
commit 0a8ec4d8f1
5 files changed
+21 -2
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Core/HLE/sceKernelModule.cpp
+2
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@@ -2808,6 +2808,8 @@ int __KernelStartModule(SceUID moduleId, u32 argsize, u32 argAddr, u32 returnVal
Memory::WriteUnchecked_U32(MIPS_MAKE_LW(MIPS_REG_RA, MIPS_REG_SP, 8), tramp + 0x24);
Memory::WriteUnchecked_U32(MIPS_MAKE_J(entryAddr), tramp + 0x28);
Memory::WriteUnchecked_U32(MIPS_MAKE_ADDIU(MIPS_REG_SP, MIPS_REG_SP, 16), tramp + 0x2C);
// Thread stacks get reused, so an older trampoline may already be compiled here.
currentMIPS->InvalidateICacheRangeDeferred(tramp, 0x30);
NotifyMemInfo(MemBlockFlags::WRITE, tramp, 0x30, "ModuleStartTrampoline");
startThread->context.pc = tramp;
startThread->nt.entrypoint = tramp;