Stowage/ladybird
2
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-10-19 15:43:20 +00:00
Code Issues Projects Releases Packages Wiki Activity

LibWasm: Implement parsing/validation for proposal exception-handling

Browse source 
Actual execution traps for now.
This commit is contained in:
Ali Mohammad Pur 2025-09-25 03:35:34 +02:00 • committed by Ali Mohammad Pur
parent 8138c2f48b
commit d99f663b1a
Notes: github-actions[bot] 2025-10-14 23:28:59 +00:00
14 changed files with 614 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

30
Libraries/LibWasm/AbstractMachine/BytecodeInterpreter.cpp
View file

@ -3754,6 +3754,36 @@ HANDLE_INSTRUCTION(i32x4_relaxed_dot_i8x16_i7x16_add_s)
TAILCALL return continue_(HANDLER_PARAMS(DECOMPOSE_PARAMS_NAME_ONLY));
}
HANDLE_INSTRUCTION(throw_ref)
{
interpreter.set_trap("Not Implemented: Proposal 'Exception-handling'"sv);
return Outcome::Return;
}
HANDLE_INSTRUCTION(throw_)
{
{
auto tag_address = configuration.frame().module().tags()[instruction->arguments().get<TagIndex>().value()];
auto& tag_instance = *configuration.store().get(tag_address);
auto& type = tag_instance.type();
auto values = Vector<Value>(configuration.value_stack().span().slice_from_end(type.parameters().size()));
configuration.value_stack().shrink(configuration.value_stack().size() - type.parameters().size());
auto exception_address = configuration.store().allocate(tag_instance, move(values));
if (!exception_address.has_value()) {
interpreter.set_trap("Out of memory"sv);
return Outcome::Return;
}
configuration.value_stack().append(Value(Reference { Reference::Exception { *exception_address } }));
}
TAILCALL return InstructionHandler<Instructions::throw_ref.value()>::operator()<HasDynamicInsnLimit, Continue>(HANDLER_PARAMS(DECOMPOSE_PARAMS_NAME_ONLY));
}
HANDLE_INSTRUCTION(try_table)
{
interpreter.set_trap("Not Implemented: Proposal 'Exception-handling'"sv);
return Outcome::Return;
}
template<u64 opcode, bool HasDynamicInsnLimit, typename Continue, typename... Args>
constexpr static auto handle_instruction(Args&&... a)
{