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Disable SSE4.x (#561)

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This is a quick fix for the issue presented in: #560
This commit is contained in:
Maurice Heumann
2025-10-21 07:57:24 +02:00
committed by GitHub
parent 0e158b6064 1a97f3b2e2
commit 9350430d8e
1 changed files with 15 additions and 2 deletions
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17
src/analyzer/main.cpp
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@@ -492,8 +492,10 @@ namespace
const auto& exe = *win_emu->mod_manager.executable;
win_emu->emu().hook_instruction(x86_hookable_instructions::cpuid, [&] {
const auto rip = win_emu->emu().read_instruction_pointer();
const auto leaf = win_emu->emu().reg<uint32_t>(x86_register::eax);
auto& emu = win_emu->emu();
const auto rip = emu.read_instruction_pointer();
const auto leaf = emu.reg<uint32_t>(x86_register::eax);
const auto mod = get_module_if_interesting(win_emu->mod_manager, options.modules, rip);
if (mod.has_value() && (!concise_logging || context.cpuid_cache.insert({rip, leaf}).second))
@@ -502,6 +504,17 @@ namespace
(*mod) ? (*mod)->name.c_str() : "<N/A>");
}
if (leaf == 1)
{
// NOTE: We hard-code these values to disable SSE4.x
emu.reg<uint32_t>(x86_register::eax, 0x000906EA);
emu.reg<uint32_t>(x86_register::ebx, 0x00100800);
emu.reg<uint32_t>(x86_register::ecx, 0xFFE2F38F);
emu.reg<uint32_t>(x86_register::edx, 0xBFEBFBFF);
return instruction_hook_continuation::skip_instruction;
}
return instruction_hook_continuation::run_instruction;
});