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fix: leave room for hooking libraries in front of every runtime export

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mirkobrombin committed 2026-10-27 22:04:55 +00:00
1 parent 7479cd95d1
commit bea2192ed6
5 files changed
+19 -9
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native/cpu/native_cpu.cpp
+5 -1
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@@ -1633,7 +1633,11 @@ void NativeProcess::add_api_trap(uint64_t address, uint32_t callee_cleanup)
return at - page < state->trap_page.size() ? state->trap_page[at - page] : read_memory(at, 1)[0];
};
if (!state->covers(address, 1, PROT_EXEC) || byte_at(address) != 0xcc)
throw std::runtime_error("native API trap must be an executable INT3");
{
char text[96];
std::snprintf(text, sizeof text, "native API trap must be an executable INT3: %llx", static_cast<unsigned long long>(address));
throw std::runtime_error(text);
}
if (state->mode == NativeMode::x86 && (address >= state->limit() || callee_cleanup % 4))
throw std::runtime_error("native x86 API trap requires a 32-bit address and dword-aligned cleanup");
state->api_traps[address] = callee_cleanup;