mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-26 09:45:06 +02:00
200103b0af
Add a new interpreter that executes bytecode via generated assembly, written in a custom DSL (asmint.asm) that AsmIntGen compiles to native x86_64 or aarch64 code. The interpreter keeps the bytecode program counter and register file pointer in machine registers for fast access, dispatching opcodes through a jump table. Hot paths (arithmetic, comparisons, property access on simple objects) are handled entirely in assembly, with cold/complex operations calling into C++ helper functions defined in AsmInterpreter.cpp. A small build-time tool (gen_asm_offsets) uses offsetof() to emit struct field offsets as constants consumed by the DSL, ensuring the assembly stays in sync with C++ struct layouts. The interpreter is enabled by default on platforms that support it. The C++ interpreter can be selected via LIBJS_USE_CPP_INTERPRETER=1. Currently supported platforms: - Linux/x86_64 - Linux/aarch64 - macOS/x86_64 - macOS/aarch64
22 lines
307 B
C++
22 lines
307 B
C++
/*
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* Copyright (c) 2026, the Ladybird developers.
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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 <AK/Types.h>
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namespace JS::Bytecode {
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class Interpreter;
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class AsmInterpreter {
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public:
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static void run(Interpreter&, size_t entry_point);
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static bool is_available();
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};
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}
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