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Optimize MMIO handling

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momo5502
2025-04-05 08:55:08 +02:00
parent b696117424
commit d191f8e667
7 changed files with 49 additions and 55 deletions
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32
src/unicorn-emulator/unicorn_x64_emulator.cpp
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@@ -243,6 +243,14 @@ namespace unicorn
return block;
}
void assert_64bit_limit(const size_t size)
{
if (size > sizeof(uint64_t))
{
throw std::runtime_error("Exceeded uint64_t size limit");
}
}
class unicorn_x64_emulator : public x64_emulator
{
public:
@@ -370,13 +378,23 @@ namespace unicorn
void map_mmio(const uint64_t address, const size_t size, mmio_read_callback read_cb,
mmio_write_callback write_cb) override
{
mmio_callbacks cb{.read = mmio_callbacks::read_wrapper(
[c = std::move(read_cb)](uc_engine*, const uint64_t addr, const uint32_t s) {
return c(addr, s);
}),
.write = mmio_callbacks::write_wrapper(
[c = std::move(write_cb)](uc_engine*, const uint64_t addr, const uint32_t s,
const uint64_t value) { c(addr, s, value); })};
auto read_wrapper = [c = std::move(read_cb)](uc_engine*, const uint64_t addr, const uint32_t s) {
assert_64bit_limit(s);
uint64_t value{};
c(addr, &value, s);
return value;
};
auto write_wrapper = [c = std::move(write_cb)](uc_engine*, const uint64_t addr, const uint32_t s,
const uint64_t value) {
assert_64bit_limit(s);
c(addr, &value, s);
};
mmio_callbacks cb{
.read = mmio_callbacks::read_wrapper(std::move(read_wrapper)),
.write = mmio_callbacks::write_wrapper(std::move(write_wrapper)),
};
uce(uc_mmio_map(*this, address, size, cb.read.get_c_function(), cb.read.get_user_data(),
cb.write.get_c_function(), cb.write.get_user_data()));