blob: ae8f93ac9e1b238401c90d8e678fcde84295a68f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
// 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 "regexp/regexp-bytecodes.h"
#include <cctype>
namespace v8 {
namespace internal {
void RegExpBytecodeDisassembleSingle(const byte* code_base, const byte* pc) {
PrintF("%s", RegExpBytecodeName(*pc));
// Args and the bytecode as hex.
for (int i = 0; i < RegExpBytecodeLength(*pc); i++) {
PrintF(", %02x", pc[i]);
}
PrintF(" ");
// Args as ascii.
for (int i = 1; i < RegExpBytecodeLength(*pc); 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
|