From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- js/src/irregexp/imported/regexp-bytecodes.cc | 46 ++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 js/src/irregexp/imported/regexp-bytecodes.cc (limited to 'js/src/irregexp/imported/regexp-bytecodes.cc') diff --git a/js/src/irregexp/imported/regexp-bytecodes.cc b/js/src/irregexp/imported/regexp-bytecodes.cc new file mode 100644 index 0000000000..829bea9180 --- /dev/null +++ b/js/src/irregexp/imported/regexp-bytecodes.cc @@ -0,0 +1,46 @@ +// Copyright 2019 the V8 project authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "irregexp/imported/regexp-bytecodes.h" + +#include + + +namespace v8 { +namespace internal { + +void RegExpBytecodeDisassembleSingle(const byte* code_base, const byte* pc) { + int bytecode = *reinterpret_cast(pc) & BYTECODE_MASK; + PrintF("%s", RegExpBytecodeName(bytecode)); + + // Args and the bytecode as hex. + for (int i = 0; i < RegExpBytecodeLength(bytecode); i++) { + PrintF(", %02x", pc[i]); + } + PrintF(" "); + + // Args as ascii. + for (int i = 1; i < RegExpBytecodeLength(bytecode); i++) { + unsigned char b = pc[i]; + PrintF("%c", std::isprint(b) ? b : '.'); + } + PrintF("\n"); +} + +void RegExpBytecodeDisassemble(const byte* code_base, int length, + const char* pattern) { + PrintF("[generated bytecode for regexp pattern: '%s']\n", pattern); + + ptrdiff_t offset = 0; + + while (offset < length) { + const byte* const pc = code_base + offset; + PrintF("%p %4" V8PRIxPTRDIFF " ", pc, offset); + RegExpBytecodeDisassembleSingle(code_base, pc); + offset += RegExpBytecodeLength(*pc); + } +} + +} // namespace internal +} // namespace v8 -- cgit v1.2.3