xref: /llvm-project/lldb/examples/python/disassembly_mode.py (revision 2238dcc39358353cac21df75c3c3286ab20b8f53)
1""" Adds the 'toggle-disassembly' command to switch you into a disassembly only mode """
2import lldb
3
4
5class DisassemblyMode:
6    def __init__(self, debugger, unused):
7        self.dbg = debugger
8        self.interp = debugger.GetCommandInterpreter()
9        self.store_state()
10        self.mode_off = True
11
12    def store_state(self):
13        self.dis_count = self.get_string_value("stop-disassembly-count")
14        self.dis_display = self.get_string_value("stop-disassembly-display")
15        self.before_count = self.get_string_value("stop-line-count-before")
16        self.after_count = self.get_string_value("stop-line-count-after")
17
18    def get_string_value(self, setting):
19        result = lldb.SBCommandReturnObject()
20        self.interp.HandleCommand("settings show " + setting, result)
21        value = result.GetOutput().split(" = ")[1].rstrip("\n")
22        return value
23
24    def set_value(self, setting, value):
25        result = lldb.SBCommandReturnObject()
26        self.interp.HandleCommand("settings set " + setting + " " + value, result)
27
28    def __call__(self, debugger, command, exe_ctx, result):
29        if self.mode_off:
30            self.mode_off = False
31            self.store_state()
32            self.set_value("stop-disassembly-display", "always")
33            self.set_value("stop-disassembly-count", "8")
34            self.set_value("stop-line-count-before", "0")
35            self.set_value("stop-line-count-after", "0")
36            result.AppendMessage("Disassembly mode on.")
37        else:
38            self.mode_off = True
39            self.set_value("stop-disassembly-display", self.dis_display)
40            self.set_value("stop-disassembly-count", self.dis_count)
41            self.set_value("stop-line-count-before", self.before_count)
42            self.set_value("stop-line-count-after", self.after_count)
43            result.AppendMessage("Disassembly mode off.")
44
45    def get_short_help(self):
46        return "Toggles between a disassembly only mode and normal source mode\n"
47
48
49def __lldb_init_module(debugger, unused):
50    debugger.HandleCommand(
51        "command script add -o -c disassembly_mode.DisassemblyMode toggle-disassembly"
52    )
53