1import lldb
2import binascii
3from lldbsuite.test.lldbtest import *
4from lldbsuite.test.decorators import *
5from gdbclientutils import *
6
7LLDB_INVALID_ADDRESS = lldb.LLDB_INVALID_ADDRESS
8load_address = 0x400000000
9
10def format_register_value(val):
11    """
12    Encode each byte by two hex digits in little-endian order.
13    """
14    result = ""
15    mask = 0xff
16    shift = 0
17    for i in range(0, 8):
18        x = (val & mask) >> shift
19        result += format(x, '02x')
20        mask <<= 8
21        shift += 8
22    return result
23
24
25class MyResponder(MockGDBServerResponder):
26    current_pc = load_address + 0x0a
27
28    def __init__(self, obj_path, module_name = ""):
29        self._obj_path = obj_path
30        self._module_name = module_name or obj_path
31        MockGDBServerResponder.__init__(self)
32
33    def respond(self, packet):
34        if packet == "qProcessInfo":
35            return self.qProcessInfo()
36        if packet[0:13] == "qRegisterInfo":
37            return self.qRegisterInfo(packet[13:])
38        return MockGDBServerResponder.respond(self, packet)
39
40    def qSupported(self, client_supported):
41        return "qXfer:libraries:read+;PacketSize=1000;vContSupported-"
42
43    def qHostInfo(self):
44        return ""
45
46    def QEnableErrorStrings(self):
47        return ""
48
49    def qfThreadInfo(self):
50        return "OK"
51
52    def qRegisterInfo(self, index):
53        if (index == 0):
54            return "name:pc;alt-name:pc;bitsize:64;offset:0;encoding:uint;format:hex;set:General Purpose Registers;gcc:16;dwarf:16;generic:pc;"
55        return "E45"
56
57    def qProcessInfo(self):
58        return "pid:1;ppid:1;uid:1;gid:1;euid:1;egid:1;name:%s;triple:%s;ptrsize:4" % (hex_encode_bytes("lldb"), hex_encode_bytes("wasm32-unknown-unknown-wasm"))
59
60    def haltReason(self):
61        return "T05thread:1;"
62
63    def readRegister(self, register):
64        return format_register_value(self.current_pc)
65
66    def qXferRead(self, obj, annex, offset, length):
67        if obj == "libraries":
68            xml = '<library-list><library name=\"%s\"><section address=\"%d\"/></library></library-list>' % (self._module_name, load_address)
69            return xml, False
70        else:
71            return None, False
72
73    def readMemory(self, addr, length):
74        if addr < load_address:
75            return "E02"
76        result = ""
77        with open(self._obj_path, mode='rb') as file:
78            file_content = bytearray(file.read())
79            addr_from = addr - load_address
80            addr_to = addr_from + min(length, len(file_content) - addr_from)
81            for i in range(addr_from, addr_to):
82                result += format(file_content[i], '02x')
83            file.close()
84        return result
85
86
87class TestWasm(GDBRemoteTestBase):
88
89    def setUp(self):
90        super(TestWasm, self).setUp()
91        self._initial_platform = lldb.DBG.GetSelectedPlatform()
92
93    def tearDown(self):
94        lldb.DBG.SetSelectedPlatform(self._initial_platform)
95        super(TestWasm, self).tearDown()
96
97    def test_load_module_with_embedded_symbols_from_remote(self):
98        """Test connecting to a WebAssembly engine via GDB-remote and loading a Wasm module with embedded DWARF symbols"""
99
100        yaml_path = "test_wasm_embedded_debug_sections.yaml"
101        yaml_base, ext = os.path.splitext(yaml_path)
102        obj_path = self.getBuildArtifact(yaml_base)
103        self.yaml2obj(yaml_path, obj_path)
104
105        self.server.responder = MyResponder(obj_path, "test_wasm")
106
107        target = self.dbg.CreateTarget("")
108        process = self.connect(target)
109        lldbutil.expect_state_changes(self, self.dbg.GetListener(), process, [lldb.eStateStopped])
110
111        num_modules = target.GetNumModules()
112        self.assertEquals(1, num_modules)
113
114        module = target.GetModuleAtIndex(0)
115        num_sections = module.GetNumSections()
116        self.assertEquals(5, num_sections)
117
118        code_section = module.GetSectionAtIndex(0)
119        self.assertEquals("code", code_section.GetName())
120        self.assertEquals(load_address | code_section.GetFileOffset(), code_section.GetLoadAddress(target))
121
122        debug_info_section = module.GetSectionAtIndex(1)
123        self.assertEquals(".debug_info", debug_info_section.GetName())
124        self.assertEquals(load_address | debug_info_section.GetFileOffset(), debug_info_section.GetLoadAddress(target))
125
126        debug_abbrev_section = module.GetSectionAtIndex(2)
127        self.assertEquals(".debug_abbrev", debug_abbrev_section.GetName())
128        self.assertEquals(load_address | debug_abbrev_section.GetFileOffset(), debug_abbrev_section.GetLoadAddress(target))
129
130        debug_line_section = module.GetSectionAtIndex(3)
131        self.assertEquals(".debug_line", debug_line_section.GetName())
132        self.assertEquals(load_address | debug_line_section.GetFileOffset(), debug_line_section.GetLoadAddress(target))
133
134        debug_str_section = module.GetSectionAtIndex(4)
135        self.assertEquals(".debug_str", debug_str_section.GetName())
136        self.assertEquals(load_address | debug_line_section.GetFileOffset(), debug_line_section.GetLoadAddress(target))
137
138
139    def test_load_module_with_stripped_symbols_from_remote(self):
140        """Test connecting to a WebAssembly engine via GDB-remote and loading a Wasm module with symbols stripped into a separate Wasm file"""
141
142        sym_yaml_path = "test_sym.yaml"
143        sym_yaml_base, ext = os.path.splitext(sym_yaml_path)
144        sym_obj_path = self.getBuildArtifact(sym_yaml_base) + ".wasm"
145        self.yaml2obj(sym_yaml_path, sym_obj_path)
146
147        yaml_path = "test_wasm_external_debug_sections.yaml"
148        yaml_base, ext = os.path.splitext(yaml_path)
149        obj_path = self.getBuildArtifact(yaml_base) + ".wasm"
150        self.yaml2obj(yaml_path, obj_path)
151
152        self.server.responder = MyResponder(obj_path, "test_wasm")
153
154        folder, _ = os.path.split(obj_path)
155        self.runCmd("settings set target.debug-file-search-paths " + os.path.abspath(folder))
156
157        target = self.dbg.CreateTarget("")
158        process = self.connect(target)
159        lldbutil.expect_state_changes(self, self.dbg.GetListener(), process, [lldb.eStateStopped])
160
161        num_modules = target.GetNumModules()
162        self.assertEquals(1, num_modules)
163
164        module = target.GetModuleAtIndex(0)
165        num_sections = module.GetNumSections()
166        self.assertEquals(5, num_sections)
167
168        code_section = module.GetSectionAtIndex(0)
169        self.assertEquals("code", code_section.GetName())
170        self.assertEquals(load_address | code_section.GetFileOffset(), code_section.GetLoadAddress(target))
171
172        debug_info_section = module.GetSectionAtIndex(1)
173        self.assertEquals(".debug_info", debug_info_section.GetName())
174        self.assertEquals(LLDB_INVALID_ADDRESS, debug_info_section.GetLoadAddress(target))
175
176        debug_abbrev_section = module.GetSectionAtIndex(2)
177        self.assertEquals(".debug_abbrev", debug_abbrev_section.GetName())
178        self.assertEquals(LLDB_INVALID_ADDRESS, debug_abbrev_section.GetLoadAddress(target))
179
180        debug_line_section = module.GetSectionAtIndex(3)
181        self.assertEquals(".debug_line", debug_line_section.GetName())
182        self.assertEquals(LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target))
183
184        debug_str_section = module.GetSectionAtIndex(4)
185        self.assertEquals(".debug_str", debug_str_section.GetName())
186        self.assertEquals(LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target))
187
188
189    def test_load_module_from_file(self):
190        """Test connecting to a WebAssembly engine via GDB-remote and loading a Wasm module from a file"""
191
192        yaml_path = "test_wasm_embedded_debug_sections.yaml"
193        yaml_base, ext = os.path.splitext(yaml_path)
194        obj_path = self.getBuildArtifact(yaml_base)
195        self.yaml2obj(yaml_path, obj_path)
196
197        self.server.responder = MyResponder(obj_path)
198
199        target = self.dbg.CreateTarget("")
200        process = self.connect(target)
201        lldbutil.expect_state_changes(self, self.dbg.GetListener(), process, [lldb.eStateStopped])
202
203        num_modules = target.GetNumModules()
204        self.assertEquals(1, num_modules)
205
206        module = target.GetModuleAtIndex(0)
207        num_sections = module.GetNumSections()
208        self.assertEquals(5, num_sections)
209
210        code_section = module.GetSectionAtIndex(0)
211        self.assertEquals("code", code_section.GetName())
212        self.assertEquals(load_address | code_section.GetFileOffset(), code_section.GetLoadAddress(target))
213
214        debug_info_section = module.GetSectionAtIndex(1)
215        self.assertEquals(".debug_info", debug_info_section.GetName())
216        self.assertEquals(LLDB_INVALID_ADDRESS, debug_info_section.GetLoadAddress(target))
217
218        debug_abbrev_section = module.GetSectionAtIndex(2)
219        self.assertEquals(".debug_abbrev", debug_abbrev_section.GetName())
220        self.assertEquals(LLDB_INVALID_ADDRESS, debug_abbrev_section.GetLoadAddress(target))
221
222        debug_line_section = module.GetSectionAtIndex(3)
223        self.assertEquals(".debug_line", debug_line_section.GetName())
224        self.assertEquals(LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target))
225
226        debug_str_section = module.GetSectionAtIndex(4)
227        self.assertEquals(".debug_str", debug_str_section.GetName())
228        self.assertEquals(LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target))
229
230