import lldb
import binascii
from lldbsuite.test.lldbtest import *
from lldbsuite.test.decorators import *
from lldbsuite.test.gdbclientutils import *
from lldbsuite.test.lldbgdbclient import GDBRemoteTestBase
LLDB_INVALID_ADDRESS = lldb.LLDB_INVALID_ADDRESS
load_address = 0x400000000
def format_register_value(val):
"""
Encode each byte by two hex digits in little-endian order.
"""
result = ""
mask = 0xFF
shift = 0
for i in range(0, 8):
x = (val & mask) >> shift
result += format(x, "02x")
mask <<= 8
shift += 8
return result
class MyResponder(MockGDBServerResponder):
current_pc = load_address + 0x0A
def __init__(self, obj_path, module_name=""):
self._obj_path = obj_path
self._module_name = module_name or obj_path
MockGDBServerResponder.__init__(self)
def respond(self, packet):
if packet[0:13] == "qRegisterInfo":
return self.qRegisterInfo(packet[13:])
return MockGDBServerResponder.respond(self, packet)
def qSupported(self, client_supported):
return "qXfer:libraries:read+;PacketSize=1000;vContSupported-"
def qHostInfo(self):
return ""
def QEnableErrorStrings(self):
return ""
def qfThreadInfo(self):
return "OK"
def qRegisterInfo(self, index):
if index == 0:
return "name:pc;alt-name:pc;bitsize:64;offset:0;encoding:uint;format:hex;set:General Purpose Registers;gcc:16;dwarf:16;generic:pc;"
return "E45"
def qProcessInfo(self):
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"),
)
def haltReason(self):
return "T05thread:1;"
def readRegister(self, register):
return format_register_value(self.current_pc)
def qXferRead(self, obj, annex, offset, length):
if obj == "libraries":
xml = (
'<library-list><library name="%s"><section address="%d"/></library></library-list>'
% (self._module_name, load_address)
)
return xml, False
else:
return None, False
def readMemory(self, addr, length):
if addr < load_address:
return "E02"
result = ""
with open(self._obj_path, mode="rb") as file:
file_content = bytearray(file.read())
addr_from = addr - load_address
addr_to = addr_from + min(length, len(file_content) - addr_from)
for i in range(addr_from, addr_to):
result += format(file_content[i], "02x")
file.close()
return result
class TestWasm(GDBRemoteTestBase):
@skipIfAsan
@skipIfXmlSupportMissing
def test_load_module_with_embedded_symbols_from_remote(self):
"""Test connecting to a WebAssembly engine via GDB-remote and loading a Wasm module with embedded DWARF symbols"""
yaml_path = "test_wasm_embedded_debug_sections.yaml"
yaml_base, ext = os.path.splitext(yaml_path)
obj_path = self.getBuildArtifact(yaml_base)
self.yaml2obj(yaml_path, obj_path)
self.server.responder = MyResponder(obj_path, "test_wasm")
target = self.dbg.CreateTarget("")
process = self.connect(target)
lldbutil.expect_state_changes(
self, self.dbg.GetListener(), process, [lldb.eStateStopped]
)
num_modules = target.GetNumModules()
self.assertEqual(1, num_modules)
module = target.GetModuleAtIndex(0)
num_sections = module.GetNumSections()
self.assertEqual(5, num_sections)
code_section = module.GetSectionAtIndex(0)
self.assertEqual("code", code_section.GetName())
self.assertEqual(
load_address | code_section.GetFileOffset(),
code_section.GetLoadAddress(target),
)
debug_info_section = module.GetSectionAtIndex(1)
self.assertEqual(".debug_info", debug_info_section.GetName())
self.assertEqual(
load_address | debug_info_section.GetFileOffset(),
debug_info_section.GetLoadAddress(target),
)
debug_abbrev_section = module.GetSectionAtIndex(2)
self.assertEqual(".debug_abbrev", debug_abbrev_section.GetName())
self.assertEqual(
load_address | debug_abbrev_section.GetFileOffset(),
debug_abbrev_section.GetLoadAddress(target),
)
debug_line_section = module.GetSectionAtIndex(3)
self.assertEqual(".debug_line", debug_line_section.GetName())
self.assertEqual(
load_address | debug_line_section.GetFileOffset(),
debug_line_section.GetLoadAddress(target),
)
debug_str_section = module.GetSectionAtIndex(4)
self.assertEqual(".debug_str", debug_str_section.GetName())
self.assertEqual(
load_address | debug_line_section.GetFileOffset(),
debug_line_section.GetLoadAddress(target),
)
@skipIfAsan
@skipIfXmlSupportMissing
def test_load_module_with_stripped_symbols_from_remote(self):
"""Test connecting to a WebAssembly engine via GDB-remote and loading a Wasm module with symbols stripped into a separate Wasm file"""
sym_yaml_path = "test_sym.yaml"
sym_yaml_base, ext = os.path.splitext(sym_yaml_path)
sym_obj_path = self.getBuildArtifact(sym_yaml_base) + ".wasm"
self.yaml2obj(sym_yaml_path, sym_obj_path)
yaml_path = "test_wasm_external_debug_sections.yaml"
yaml_base, ext = os.path.splitext(yaml_path)
obj_path = self.getBuildArtifact(yaml_base) + ".wasm"
self.yaml2obj(yaml_path, obj_path)
self.server.responder = MyResponder(obj_path, "test_wasm")
folder, _ = os.path.split(obj_path)
self.runCmd(
"settings set target.debug-file-search-paths " + os.path.abspath(folder)
)
target = self.dbg.CreateTarget("")
process = self.connect(target)
lldbutil.expect_state_changes(
self, self.dbg.GetListener(), process, [lldb.eStateStopped]
)
num_modules = target.GetNumModules()
self.assertEqual(1, num_modules)
module = target.GetModuleAtIndex(0)
num_sections = module.GetNumSections()
self.assertEqual(5, num_sections)
code_section = module.GetSectionAtIndex(0)
self.assertEqual("code", code_section.GetName())
self.assertEqual(
load_address | code_section.GetFileOffset(),
code_section.GetLoadAddress(target),
)
debug_info_section = module.GetSectionAtIndex(1)
self.assertEqual(".debug_info", debug_info_section.GetName())
self.assertEqual(
LLDB_INVALID_ADDRESS, debug_info_section.GetLoadAddress(target)
)
debug_abbrev_section = module.GetSectionAtIndex(2)
self.assertEqual(".debug_abbrev", debug_abbrev_section.GetName())
self.assertEqual(
LLDB_INVALID_ADDRESS, debug_abbrev_section.GetLoadAddress(target)
)
debug_line_section = module.GetSectionAtIndex(3)
self.assertEqual(".debug_line", debug_line_section.GetName())
self.assertEqual(
LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target)
)
debug_str_section = module.GetSectionAtIndex(4)
self.assertEqual(".debug_str", debug_str_section.GetName())
self.assertEqual(
LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target)
)
@skipIfAsan
@skipIfXmlSupportMissing
def test_load_module_from_file(self):
"""Test connecting to a WebAssembly engine via GDB-remote and loading a Wasm module from a file"""
yaml_path = "test_wasm_embedded_debug_sections.yaml"
yaml_base, ext = os.path.splitext(yaml_path)
obj_path = self.getBuildArtifact(yaml_base)
self.yaml2obj(yaml_path, obj_path)
self.server.responder = MyResponder(obj_path)
target = self.dbg.CreateTarget("")
process = self.connect(target)
lldbutil.expect_state_changes(
self, self.dbg.GetListener(), process, [lldb.eStateStopped]
)
num_modules = target.GetNumModules()
self.assertEqual(1, num_modules)
module = target.GetModuleAtIndex(0)
num_sections = module.GetNumSections()
self.assertEqual(5, num_sections)
code_section = module.GetSectionAtIndex(0)
self.assertEqual("code", code_section.GetName())
self.assertEqual(
load_address | code_section.GetFileOffset(),
code_section.GetLoadAddress(target),
)
debug_info_section = module.GetSectionAtIndex(1)
self.assertEqual(".debug_info", debug_info_section.GetName())
self.assertEqual(
LLDB_INVALID_ADDRESS, debug_info_section.GetLoadAddress(target)
)
debug_abbrev_section = module.GetSectionAtIndex(2)
self.assertEqual(".debug_abbrev", debug_abbrev_section.GetName())
self.assertEqual(
LLDB_INVALID_ADDRESS, debug_abbrev_section.GetLoadAddress(target)
)
debug_line_section = module.GetSectionAtIndex(3)
self.assertEqual(".debug_line", debug_line_section.GetName())
self.assertEqual(
LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target)
)
debug_str_section = module.GetSectionAtIndex(4)
self.assertEqual(".debug_str", debug_str_section.GetName())
self.assertEqual(
LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target)
)
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