1"""
2Use lldb Python API to disassemble raw machine code bytes
3"""
4
5from __future__ import print_function
6
7from io import StringIO
8import sys
9
10import lldb
11from lldbsuite.test.decorators import *
12from lldbsuite.test.lldbtest import *
13from lldbsuite.test import lldbutil
14
15
16class Disassemble_VST1_64(TestBase):
17
18    @no_debug_info_test
19    @skipIfLLVMTargetMissing("ARM")
20    def test_disassemble_invalid_vst_1_64_raw_data(self):
21        """Test disassembling invalid vst1.64 raw bytes with the API."""
22        # Create a target from the debugger.
23        target = self.dbg.CreateTargetWithFileAndTargetTriple("", "thumbv7-apple-macosx")
24        self.assertTrue(target, VALID_TARGET)
25
26        raw_bytes = bytearray([0xf0, 0xb5, 0x03, 0xaf,
27                               0x2d, 0xe9, 0x00, 0x0d,
28                               0xad, 0xf1, 0x40, 0x04,
29                               0x24, 0xf0, 0x0f, 0x04,
30                               0xa5, 0x46])
31
32        assembly = """
33        push   {r4, r5, r6, r7, lr}
34        add    r7, sp, #0xc
35        push.w {r8, r10, r11}
36        sub.w  r4, sp, #0x40
37        bic    r4, r4, #0xf
38        mov    sp, r4
39        """
40        def split(s):
41            return [x.strip() for x in s.strip().splitlines()]
42
43        insts = target.GetInstructions(lldb.SBAddress(), raw_bytes)
44
45        if self.TraceOn():
46            print()
47            for i in insts:
48                print("Disassembled %s" % str(i))
49
50        sio = StringIO()
51        insts.Print(sio)
52        self.assertEqual(split(assembly), split(sio.getvalue()))
53
54        self.assertEqual(insts.GetSize(), len(split(assembly)))
55
56        for i,asm in enumerate(split(assembly)):
57            inst = insts.GetInstructionAtIndex(i)
58            sio = StringIO()
59            inst.Print(sio)
60            self.assertEqual(asm, sio.getvalue().strip())
61
62        raw_bytes = bytearray([0x04, 0xf9, 0xed, 0x82])
63
64        insts = target.GetInstructions(lldb.SBAddress(), raw_bytes)
65
66        inst = insts.GetInstructionAtIndex(0)
67
68        if self.TraceOn():
69            print()
70            print("Raw bytes:    ", [hex(x) for x in raw_bytes])
71            print("Disassembled%s" % str(inst))
72
73        self.assertEqual(inst.GetMnemonic(target), "vst1.64")
74