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LibJS/JIT: Support alternative entry point blocks

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If Interpreter::run_and_return_frame is called with a specific entry
point we now map that to a native instruction address, which the JIT
code jumps to after the function prologue.
This commit is contained in:
Simon Wanner 2023-11-02 21:52:20 +01:00 • committed by Andreas Kling
parent 38f3b78a1d
commit e400682fb1
4 changed files with 46 additions and 5 deletions
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5
Userland/Libraries/LibJS/Bytecode/Interpreter.cpp
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@ -367,7 +367,10 @@ Interpreter::ValueAndFrame Interpreter::run_and_return_frame(Executable& executa
vm().execution_context_stack().last()->executable = &executable;
if (auto native_executable = executable.get_or_create_native_executable()) {
native_executable->run(vm());
auto block_index = 0;
if (entry_point)
block_index = executable.basic_blocks.find_first_index_if([&](auto const& block) { return block.ptr() == entry_point; }).value();
native_executable->run(vm(), block_index);
#if 0
for (size_t i = 0; i < vm().running_execution_context().local_variables.size(); ++i) {