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UE+LibX86: Support bigger reads and writes

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This commit is contained in:
Hendiadyoin1 2021-04-10 23:29:32 +02:00 • committed by Andreas Kling
parent a99812633b
commit f1957bb86b
11 changed files with 316 additions and 4 deletions
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72
Userland/DevTools/UserspaceEmulator/SoftMMU.cpp
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@ -163,6 +163,42 @@ ValueWithShadow<u64> SoftMMU::read64(X86::LogicalAddress address)
return region->read64(address.offset() - region->base());
}
ValueWithShadow<u128> SoftMMU::read128(X86::LogicalAddress address)
{
auto* region = find_region(address);
if (!region) {
reportln("SoftMMU::read128: No region for @ {:p}", address.offset());
m_emulator.dump_backtrace();
TODO();
}
if (!region->is_readable()) {
reportln("SoftMMU::read128: Non-readable region @ {:p}", address.offset());
m_emulator.dump_backtrace();
TODO();
}
return region->read128(address.offset() - region->base());
}
ValueWithShadow<u256> SoftMMU::read256(X86::LogicalAddress address)
{
auto* region = find_region(address);
if (!region) {
reportln("SoftMMU::read256: No region for @ {:p}", address.offset());
m_emulator.dump_backtrace();
TODO();
}
if (!region->is_readable()) {
reportln("SoftMMU::read256: Non-readable region @ {:p}", address.offset());
m_emulator.dump_backtrace();
TODO();
}
return region->read256(address.offset() - region->base());
}
void SoftMMU::write8(X86::LogicalAddress address, ValueWithShadow<u8> value)
{
auto* region = find_region(address);
@ -234,6 +270,42 @@ void SoftMMU::write64(X86::LogicalAddress address, ValueWithShadow<u64> value)
region->write64(address.offset() - region->base(), value);
}
void SoftMMU::write128(X86::LogicalAddress address, ValueWithShadow<u128> value)
{
auto* region = find_region(address);
if (!region) {
reportln("SoftMMU::write128: No region for @ {:p}", address.offset());
m_emulator.dump_backtrace();
TODO();
}
if (!region->is_writable()) {
reportln("SoftMMU::write128: Non-writable region @ {:p}", address.offset());
m_emulator.dump_backtrace();
TODO();
}
region->write128(address.offset() - region->base(), value);
}
void SoftMMU::write256(X86::LogicalAddress address, ValueWithShadow<u256> value)
{
auto* region = find_region(address);
if (!region) {
reportln("SoftMMU::write256: No region for @ {:p}", address.offset());
m_emulator.dump_backtrace();
TODO();
}
if (!region->is_writable()) {
reportln("SoftMMU::write256: Non-writable region @ {:p}", address.offset());
m_emulator.dump_backtrace();
TODO();
}
region->write256(address.offset() - region->base(), value);
}
void SoftMMU::copy_to_vm(FlatPtr destination, const void* source, size_t size)
{
// FIXME: We should have a way to preserve the shadow data here as well.