563b402f04
This should make debugging and profiling much better, at little to no runtime cost. Also moves off the operator definitions to a separate header, so it should also improve the editing experience quite a bit.
85 lines
2.6 KiB
C++
85 lines
2.6 KiB
C++
/*
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* Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibWasm/AbstractMachine/AbstractMachine.h>
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namespace Wasm {
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class Configuration {
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public:
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explicit Configuration(Store& store)
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: m_store(store)
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{
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}
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Optional<Label> nth_label(size_t label)
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{
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auto index = nth_label_index(label);
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if (index.has_value())
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return m_stack.entries()[index.value()].get<Label>();
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return {};
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}
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Optional<size_t> nth_label_index(size_t);
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void set_frame(Frame&& frame)
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{
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m_current_frame_index = m_stack.size();
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Label label(frame.arity(), frame.expression().instructions().size());
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m_stack.push(move(frame));
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m_stack.push(label);
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}
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ALWAYS_INLINE auto& frame() const { return m_stack.entries()[m_current_frame_index].get<Frame>(); }
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ALWAYS_INLINE auto& frame() { return m_stack.entries()[m_current_frame_index].get<Frame>(); }
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ALWAYS_INLINE auto& ip() const { return m_ip; }
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ALWAYS_INLINE auto& ip() { return m_ip; }
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ALWAYS_INLINE auto& depth() const { return m_depth; }
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ALWAYS_INLINE auto& depth() { return m_depth; }
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ALWAYS_INLINE auto& stack() const { return m_stack; }
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ALWAYS_INLINE auto& stack() { return m_stack; }
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ALWAYS_INLINE auto& store() const { return m_store; }
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ALWAYS_INLINE auto& store() { return m_store; }
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struct CallFrameHandle {
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explicit CallFrameHandle(Configuration& configuration)
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: frame_index(configuration.m_current_frame_index)
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, stack_size(configuration.m_stack.size())
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, ip(configuration.ip())
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, configuration(configuration)
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{
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configuration.depth()++;
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}
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~CallFrameHandle()
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{
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configuration.unwind({}, *this);
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}
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size_t frame_index { 0 };
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size_t stack_size { 0 };
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InstructionPointer ip { 0 };
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Configuration& configuration;
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};
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void unwind(Badge<CallFrameHandle>, CallFrameHandle const&);
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Result call(Interpreter&, FunctionAddress, Vector<Value> arguments);
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Result execute(Interpreter&);
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void enable_instruction_count_limit() { m_should_limit_instruction_count = true; }
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bool should_limit_instruction_count() const { return m_should_limit_instruction_count; }
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void dump_stack();
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private:
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Store& m_store;
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size_t m_current_frame_index { 0 };
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Stack m_stack;
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size_t m_depth { 0 };
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InstructionPointer m_ip;
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bool m_should_limit_instruction_count { false };
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};
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}
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