xref: /llvm-project/lldb/test/API/python_api/function_symbol/TestDisasmAPI.py (revision 2238dcc39358353cac21df75c3c3286ab20b8f53) 
1"""
2Test retrieval of SBAddress from function/symbol, disassembly, and SBAddress APIs.
3"""
4
5import lldb
6from lldbsuite.test.decorators import *
7from lldbsuite.test.lldbtest import *
8from lldbsuite.test import lldbutil
9
10
11class DisasmAPITestCase(TestBase):
12    def setUp(self):
13        # Call super's setUp().
14        TestBase.setUp(self)
15        # Find the line number to of function 'c'.
16        self.line1 = line_number(
17            "main.c", "// Find the line number for breakpoint 1 here."
18        )
19        self.line2 = line_number(
20            "main.c", "// Find the line number for breakpoint 2 here."
21        )
22
23    def test(self):
24        """Exercise getting SBAddress objects, disassembly, and SBAddress APIs."""
25        self.build()
26        exe = self.getBuildArtifact("a.out")
27
28        # Create a target by the debugger.
29        target = self.dbg.CreateTarget(exe)
30        self.assertTrue(target, VALID_TARGET)
31
32        # Now create the two breakpoints inside function 'a'.
33        breakpoint1 = target.BreakpointCreateByLocation("main.c", self.line1)
34        breakpoint2 = target.BreakpointCreateByLocation("main.c", self.line2)
35        self.trace("breakpoint1:", breakpoint1)
36        self.trace("breakpoint2:", breakpoint2)
37        self.assertTrue(
38            breakpoint1 and breakpoint1.GetNumLocations() == 1, VALID_BREAKPOINT
39        )
40        self.assertTrue(
41            breakpoint2 and breakpoint2.GetNumLocations() == 1, VALID_BREAKPOINT
42        )
43
44        # Now launch the process, and do not stop at entry point.
45        process = target.LaunchSimple(None, None, self.get_process_working_directory())
46        self.assertTrue(process, PROCESS_IS_VALID)
47
48        # Frame #0 should be on self.line1.
49        self.assertState(process.GetState(), lldb.eStateStopped)
50        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
51        self.assertTrue(
52            thread.IsValid(),
53            "There should be a thread stopped due to breakpoint condition",
54        )
55        frame0 = thread.GetFrameAtIndex(0)
56        lineEntry = frame0.GetLineEntry()
57        self.assertEqual(lineEntry.GetLine(), self.line1)
58
59        address1 = lineEntry.GetStartAddress()
60        self.trace("address1:", address1)
61
62        # Now call SBTarget.ResolveSymbolContextForAddress() with address1.
63        context1 = target.ResolveSymbolContextForAddress(
64            address1, lldb.eSymbolContextEverything
65        )
66
67        self.assertTrue(context1)
68        if self.TraceOn():
69            print("context1:", context1)
70
71        # Continue the inferior, the breakpoint 2 should be hit.
72        process.Continue()
73        self.assertState(process.GetState(), lldb.eStateStopped)
74        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)
75        self.assertTrue(
76            thread.IsValid(),
77            "There should be a thread stopped due to breakpoint condition",
78        )
79        frame0 = thread.GetFrameAtIndex(0)
80        lineEntry = frame0.GetLineEntry()
81        self.assertEqual(lineEntry.GetLine(), self.line2)
82
83        # Verify that the symbol and the function has the same address range
84        # per function 'a'.
85        symbol = context1.GetSymbol()
86        function = frame0.GetFunction()
87        self.assertTrue(symbol and function)
88
89        disasm_output = lldbutil.disassemble(target, symbol)
90        if self.TraceOn():
91            print("symbol:", symbol)
92            print("disassembly=>\n", disasm_output)
93
94        disasm_output = lldbutil.disassemble(target, function)
95        if self.TraceOn():
96            print("function:", function)
97            print("disassembly=>\n", disasm_output)
98
99        sa1 = symbol.GetStartAddress()
100        self.trace("sa1:", sa1)
101        self.trace("sa1.GetFileAddress():", hex(sa1.GetFileAddress()))
102        sa2 = function.GetStartAddress()
103        self.trace("sa2:", sa2)
104        self.trace("sa2.GetFileAddress():", hex(sa2.GetFileAddress()))
105        self.assertTrue(
106            sa1 and sa2 and sa1 == sa2, "The two starting addresses should be the same"
107        )
108
109        from lldbsuite.test.lldbutil import get_description
110
111        desc1 = get_description(sa1)
112        desc2 = get_description(sa2)
113        self.assertTrue(
114            desc1 and desc2 and desc1 == desc2,
115            "SBAddress.GetDescription() API of sa1 and sa2 should return the same string",
116        )
117