1from __future__ import print_function
2import lldb
3from lldbsuite.test.lldbtest import *
4from lldbsuite.test.decorators import *
5from lldbsuite.test.gdbclientutils import *
6from lldbsuite.test.lldbgdbclient import GDBRemoteTestBase
7
8
9class TestPartialGPacket(GDBRemoteTestBase):
10
11    mydir = TestBase.compute_mydir(__file__)
12
13    @skipIfXmlSupportMissing
14    @skipIfRemote
15    def test(self):
16        """
17        Test GDB remote fallback to 'p' packet when 'g' packet does not include all registers.
18        """
19        class MyResponder(MockGDBServerResponder):
20
21            def qXferRead(self, obj, annex, offset, length):
22                if annex == "target.xml":
23                    return """<?xml version="1.0"?>
24                        <!DOCTYPE feature SYSTEM "gdb-target.dtd">
25                        <target>
26                        <architecture>arm</architecture>
27                        <feature name="org.gnu.gdb.arm.m-profile">
28                        <reg name="r0" bitsize="32" type="uint32" group="general"/>
29                        <reg name="r1" bitsize="32" type="uint32" group="general"/>
30                        <reg name="r2" bitsize="32" type="uint32" group="general"/>
31                        <reg name="r3" bitsize="32" type="uint32" group="general"/>
32                        <reg name="r4" bitsize="32" type="uint32" group="general"/>
33                        <reg name="r5" bitsize="32" type="uint32" group="general"/>
34                        <reg name="r6" bitsize="32" type="uint32" group="general"/>
35                        <reg name="r7" bitsize="32" type="uint32" group="general"/>
36                        <reg name="r8" bitsize="32" type="uint32" group="general"/>
37                        <reg name="r9" bitsize="32" type="uint32" group="general"/>
38                        <reg name="r10" bitsize="32" type="uint32" group="general"/>
39                        <reg name="r11" bitsize="32" type="uint32" group="general"/>
40                        <reg name="r12" bitsize="32" type="uint32" group="general"/>
41                        <reg name="sp" bitsize="32" type="data_ptr" group="general"/>
42                        <reg name="lr" bitsize="32" type="uint32" group="general"/>
43                        <reg name="pc" bitsize="32" type="code_ptr" group="general"/>
44                        <reg name="xpsr" bitsize="32" regnum="25" type="uint32" group="general"/>
45                        <reg name="MSP" bitsize="32" regnum="26" type="uint32" group="general"/>
46                        <reg name="PSP" bitsize="32" regnum="27" type="uint32" group="general"/>
47                        <reg name="PRIMASK" bitsize="32" regnum="28" type="uint32" group="general"/>
48                        <reg name="BASEPRI" bitsize="32" regnum="29" type="uint32" group="general"/>
49                        <reg name="FAULTMASK" bitsize="32" regnum="30" type="uint32" group="general"/>
50                        <reg name="CONTROL" bitsize="32" regnum="31" type="uint32" group="general"/>
51                        </feature>
52                        </target>""", False
53                else:
54                    return None, False
55
56            def readRegister(self, regnum):
57                if regnum == 31:
58                    return "cdcc8c3f00000000"
59                return "E01"
60
61            def readRegisters(self):
62                return "20000000f8360020001000002fcb0008f8360020a0360020200c0020000000000000000000000000000000000000000000000000b87f0120b7d100082ed2000800000001"
63
64            def haltReason(self):
65                return "S05"
66
67            def qfThreadInfo(self):
68                return "mdead"
69
70            def qC(self):
71                return ""
72
73            def qSupported(self, client_supported):
74                return "PacketSize=4000;qXfer:memory-map:read-;QStartNoAckMode+;qXfer:threads:read+;hwbreak+;qXfer:features:read+"
75
76            def QThreadSuffixSupported(self):
77                return "OK"
78
79            def QListThreadsInStopReply(self):
80                return "OK"
81
82        self.server.responder = MyResponder()
83        if self.TraceOn():
84            self.runCmd("log enable gdb-remote packets")
85            self.addTearDownHook(
86                lambda: self.runCmd("log disable gdb-remote packets"))
87
88        self.dbg.SetDefaultArchitecture("armv7em")
89        target = self.dbg.CreateTargetWithFileAndArch(None, None)
90
91        process = self.connect(target)
92
93        if self.TraceOn():
94            interp = self.dbg.GetCommandInterpreter()
95            result = lldb.SBCommandReturnObject()
96            interp.HandleCommand("target list", result)
97            print(result.GetOutput())
98
99        r0_valobj = process.GetThreadAtIndex(
100            0).GetFrameAtIndex(0).FindRegister("r0")
101        self.assertEqual(r0_valobj.GetValueAsUnsigned(), 0x20)
102
103        pc_valobj = process.GetThreadAtIndex(
104            0).GetFrameAtIndex(0).FindRegister("pc")
105        self.assertEqual(pc_valobj.GetValueAsUnsigned(), 0x0800d22e)
106
107        pc_valobj = process.GetThreadAtIndex(
108            0).GetFrameAtIndex(0).FindRegister("CONTROL")
109        self.assertEqual(pc_valobj.GetValueAsUnsigned(), 0x3f8ccccd)
110