33c0f93f6c
This infrastructure has proven proven its worth, so give it a more prominent place. My immediate motivation for this is the desire to reuse this infrastructure for qemu platform testing, but I believe this move makes sense independently of that. Moving this code to the packages tree will allow as to add more structure to the gdb client tests -- currently they are all crammed into the same test folder as that was the only way they could access this code. I'm splitting the code into two parts while moving it. The first once contains just the generic gdb protocol wrappers, while the other one contains the unit test glue. The reason for that is that for qemu testing, I need to run the gdb code in a separate process, so I will only be using the first part there. Differential Revision: https://reviews.llvm.org/D113893
231 lines
9.2 KiB
Python
231 lines
9.2 KiB
Python
import lldb
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import binascii
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test.decorators import *
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from lldbsuite.test.gdbclientutils import *
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from lldbsuite.test.lldbgdbclient import GDBRemoteTestBase
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LLDB_INVALID_ADDRESS = lldb.LLDB_INVALID_ADDRESS
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load_address = 0x400000000
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def format_register_value(val):
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"""
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Encode each byte by two hex digits in little-endian order.
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"""
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result = ""
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mask = 0xff
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shift = 0
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for i in range(0, 8):
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x = (val & mask) >> shift
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result += format(x, '02x')
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mask <<= 8
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shift += 8
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return result
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class MyResponder(MockGDBServerResponder):
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current_pc = load_address + 0x0a
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def __init__(self, obj_path, module_name = ""):
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self._obj_path = obj_path
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self._module_name = module_name or obj_path
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MockGDBServerResponder.__init__(self)
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def respond(self, packet):
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if packet == "qProcessInfo":
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return self.qProcessInfo()
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if packet[0:13] == "qRegisterInfo":
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return self.qRegisterInfo(packet[13:])
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return MockGDBServerResponder.respond(self, packet)
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def qSupported(self, client_supported):
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return "qXfer:libraries:read+;PacketSize=1000;vContSupported-"
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def qHostInfo(self):
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return ""
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def QEnableErrorStrings(self):
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return ""
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def qfThreadInfo(self):
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return "OK"
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def qRegisterInfo(self, index):
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if (index == 0):
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return "name:pc;alt-name:pc;bitsize:64;offset:0;encoding:uint;format:hex;set:General Purpose Registers;gcc:16;dwarf:16;generic:pc;"
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return "E45"
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def qProcessInfo(self):
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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"))
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def haltReason(self):
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return "T05thread:1;"
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def readRegister(self, register):
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return format_register_value(self.current_pc)
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def qXferRead(self, obj, annex, offset, length):
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if obj == "libraries":
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xml = '<library-list><library name=\"%s\"><section address=\"%d\"/></library></library-list>' % (self._module_name, load_address)
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return xml, False
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else:
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return None, False
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def readMemory(self, addr, length):
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if addr < load_address:
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return "E02"
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result = ""
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with open(self._obj_path, mode='rb') as file:
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file_content = bytearray(file.read())
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addr_from = addr - load_address
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addr_to = addr_from + min(length, len(file_content) - addr_from)
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for i in range(addr_from, addr_to):
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result += format(file_content[i], '02x')
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file.close()
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return result
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class TestWasm(GDBRemoteTestBase):
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mydir = TestBase.compute_mydir(__file__)
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@skipIfAsan
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@skipIfXmlSupportMissing
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def test_load_module_with_embedded_symbols_from_remote(self):
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"""Test connecting to a WebAssembly engine via GDB-remote and loading a Wasm module with embedded DWARF symbols"""
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yaml_path = "test_wasm_embedded_debug_sections.yaml"
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yaml_base, ext = os.path.splitext(yaml_path)
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obj_path = self.getBuildArtifact(yaml_base)
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self.yaml2obj(yaml_path, obj_path)
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self.server.responder = MyResponder(obj_path, "test_wasm")
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target = self.dbg.CreateTarget("")
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process = self.connect(target)
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lldbutil.expect_state_changes(self, self.dbg.GetListener(), process, [lldb.eStateStopped])
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num_modules = target.GetNumModules()
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self.assertEquals(1, num_modules)
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module = target.GetModuleAtIndex(0)
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num_sections = module.GetNumSections()
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self.assertEquals(5, num_sections)
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code_section = module.GetSectionAtIndex(0)
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self.assertEquals("code", code_section.GetName())
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self.assertEquals(load_address | code_section.GetFileOffset(), code_section.GetLoadAddress(target))
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debug_info_section = module.GetSectionAtIndex(1)
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self.assertEquals(".debug_info", debug_info_section.GetName())
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self.assertEquals(load_address | debug_info_section.GetFileOffset(), debug_info_section.GetLoadAddress(target))
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debug_abbrev_section = module.GetSectionAtIndex(2)
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self.assertEquals(".debug_abbrev", debug_abbrev_section.GetName())
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self.assertEquals(load_address | debug_abbrev_section.GetFileOffset(), debug_abbrev_section.GetLoadAddress(target))
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debug_line_section = module.GetSectionAtIndex(3)
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self.assertEquals(".debug_line", debug_line_section.GetName())
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self.assertEquals(load_address | debug_line_section.GetFileOffset(), debug_line_section.GetLoadAddress(target))
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debug_str_section = module.GetSectionAtIndex(4)
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self.assertEquals(".debug_str", debug_str_section.GetName())
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self.assertEquals(load_address | debug_line_section.GetFileOffset(), debug_line_section.GetLoadAddress(target))
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@skipIfAsan
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@skipIfXmlSupportMissing
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def test_load_module_with_stripped_symbols_from_remote(self):
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"""Test connecting to a WebAssembly engine via GDB-remote and loading a Wasm module with symbols stripped into a separate Wasm file"""
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sym_yaml_path = "test_sym.yaml"
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sym_yaml_base, ext = os.path.splitext(sym_yaml_path)
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sym_obj_path = self.getBuildArtifact(sym_yaml_base) + ".wasm"
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self.yaml2obj(sym_yaml_path, sym_obj_path)
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yaml_path = "test_wasm_external_debug_sections.yaml"
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yaml_base, ext = os.path.splitext(yaml_path)
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obj_path = self.getBuildArtifact(yaml_base) + ".wasm"
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self.yaml2obj(yaml_path, obj_path)
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self.server.responder = MyResponder(obj_path, "test_wasm")
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folder, _ = os.path.split(obj_path)
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self.runCmd("settings set target.debug-file-search-paths " + os.path.abspath(folder))
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target = self.dbg.CreateTarget("")
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process = self.connect(target)
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lldbutil.expect_state_changes(self, self.dbg.GetListener(), process, [lldb.eStateStopped])
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num_modules = target.GetNumModules()
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self.assertEquals(1, num_modules)
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module = target.GetModuleAtIndex(0)
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num_sections = module.GetNumSections()
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self.assertEquals(5, num_sections)
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code_section = module.GetSectionAtIndex(0)
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self.assertEquals("code", code_section.GetName())
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self.assertEquals(load_address | code_section.GetFileOffset(), code_section.GetLoadAddress(target))
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debug_info_section = module.GetSectionAtIndex(1)
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self.assertEquals(".debug_info", debug_info_section.GetName())
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self.assertEquals(LLDB_INVALID_ADDRESS, debug_info_section.GetLoadAddress(target))
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debug_abbrev_section = module.GetSectionAtIndex(2)
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self.assertEquals(".debug_abbrev", debug_abbrev_section.GetName())
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self.assertEquals(LLDB_INVALID_ADDRESS, debug_abbrev_section.GetLoadAddress(target))
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debug_line_section = module.GetSectionAtIndex(3)
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self.assertEquals(".debug_line", debug_line_section.GetName())
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self.assertEquals(LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target))
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debug_str_section = module.GetSectionAtIndex(4)
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self.assertEquals(".debug_str", debug_str_section.GetName())
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self.assertEquals(LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target))
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@skipIfAsan
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@skipIfXmlSupportMissing
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def test_load_module_from_file(self):
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"""Test connecting to a WebAssembly engine via GDB-remote and loading a Wasm module from a file"""
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yaml_path = "test_wasm_embedded_debug_sections.yaml"
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yaml_base, ext = os.path.splitext(yaml_path)
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obj_path = self.getBuildArtifact(yaml_base)
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self.yaml2obj(yaml_path, obj_path)
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self.server.responder = MyResponder(obj_path)
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target = self.dbg.CreateTarget("")
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process = self.connect(target)
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lldbutil.expect_state_changes(self, self.dbg.GetListener(), process, [lldb.eStateStopped])
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num_modules = target.GetNumModules()
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self.assertEquals(1, num_modules)
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module = target.GetModuleAtIndex(0)
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num_sections = module.GetNumSections()
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self.assertEquals(5, num_sections)
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code_section = module.GetSectionAtIndex(0)
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self.assertEquals("code", code_section.GetName())
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self.assertEquals(load_address | code_section.GetFileOffset(), code_section.GetLoadAddress(target))
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debug_info_section = module.GetSectionAtIndex(1)
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self.assertEquals(".debug_info", debug_info_section.GetName())
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self.assertEquals(LLDB_INVALID_ADDRESS, debug_info_section.GetLoadAddress(target))
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debug_abbrev_section = module.GetSectionAtIndex(2)
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self.assertEquals(".debug_abbrev", debug_abbrev_section.GetName())
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self.assertEquals(LLDB_INVALID_ADDRESS, debug_abbrev_section.GetLoadAddress(target))
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debug_line_section = module.GetSectionAtIndex(3)
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self.assertEquals(".debug_line", debug_line_section.GetName())
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self.assertEquals(LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target))
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debug_str_section = module.GetSectionAtIndex(4)
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self.assertEquals(".debug_str", debug_str_section.GetName())
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self.assertEquals(LLDB_INVALID_ADDRESS, debug_line_section.GetLoadAddress(target))
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