[Interpreter] Add a bytecode annotate tool.

tools/ignition/linux_perf_bytecode_annotate_test.py

+# Copyright 2016 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.
+
+import StringIO
+import unittest
+import linux_perf_bytecode_annotate as bytecode_annotate
+
+
+PERF_SCRIPT_OUTPUT = """
+# This line is a comment
+# This should be ignored too
+#
+#    cdefab01  aRandomSymbol::Name(to, be, ignored)
+
+   00000000 firstSymbol
+   00000123 secondSymbol
+
+   01234567 foo
+   abcdef76 BytecodeHandler:bar+0x12
+   76543210 baz
+   abcdef76 BytecodeHandler:bar+0x16
+   76543210 baz
+
+   01234567 foo
+   abcdef76 BytecodeHandler:foo+0x1
+   76543210 baz
+   abcdef76 BytecodeHandler:bar+0x2
+   76543210 bar
+
+   abcdef76 BytecodeHandler:bar+0x19
+
+   abcdef76 BytecodeHandler:bar+0x12
+
+   abcdef76 BytecodeHandler:bar+0x12
+"""
+
+
+D8_CODEGEN_OUTPUT = """
+kind = BYTECODE_HANDLER
+name = foo
+compiler = turbofan
+Instructions (size = 3)
+0x3101394a3c0     0  55             push rbp
+0x3101394a3c1     1  ffe3           jmp rbx
+
+kind = BYTECODE_HANDLER
+name = bar
+compiler = turbofan
+Instructions (size = 5)
+0x3101394b3c0     0  55             push rbp
+0x3101394b3c1     1  4883c428       REX.W addq rsp,0x28
+# Unexpected comment
+0x3101394b3c5     5  ffe3           jmp rbx
+
+kind = BYTECODE_HANDLER
+name = baz
+compiler = turbofan
+Instructions (size = 5)
+0x3101394c3c0     0  55             push rbp
+0x3101394c3c1     1  4883c428       REX.W addq rsp,0x28
+0x3101394c3c5     5  ffe3           jmp rbx
+"""
+
+
+class LinuxPerfBytecodeAnnotateTest(unittest.TestCase):
+
+  def test_bytecode_offset_generator(self):
+    perf_stream = StringIO.StringIO(PERF_SCRIPT_OUTPUT)
+    offsets = list(
+        bytecode_annotate.bytecode_offset_generator(perf_stream, "bar"))
+    self.assertListEqual(offsets, [18, 25, 18, 18])
+
+  def test_bytecode_disassembly_generator(self):
+    codegen_stream = StringIO.StringIO(D8_CODEGEN_OUTPUT)
+    disassembly = list(
+        bytecode_annotate.bytecode_disassembly_generator(codegen_stream, "bar"))
+    self.assertListEqual(disassembly, [
+        "0x3101394b3c0     0  55             push rbp",
+        "0x3101394b3c1     1  4883c428       REX.W addq rsp,0x28",
+        "0x3101394b3c5     5  ffe3           jmp rbx"])
+
+
+if __name__ == "__main__":
+  unittest.main()