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# Copyright 2020 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Flags: -expose-wasm --wasm-gdb-remote --wasm-pause-waiting-for-debugger test/debugging/wasm/gdb-server/test_files/test_basic.js
import re
import struct
import sys
import unittest
import gdb_rsp
import test_files.test_basic as test_basic
# These are set up by Main().
COMMAND = None
class Tests(unittest.TestCase):
def test_loaded_modules(self):
with gdb_rsp.LaunchDebugStub(COMMAND) as connection:
modules = gdb_rsp.GetLoadedModules(connection)
connection.Close()
assert(len(modules) > 0)
def test_checking_thread_state(self):
with gdb_rsp.LaunchDebugStub(COMMAND) as connection:
# Query wasm thread id
reply = connection.RspRequest('qfThreadInfo')
match = re.match('m([0-9])$', reply)
if match is None:
raise AssertionError('Bad active thread list reply: %r' % reply)
thread_id = int(match.group(1), 10)
# There should not be other threads.
reply = connection.RspRequest('qsThreadInfo')
self.assertEqual("l", reply)
# Test that valid thread should be alive.
reply = connection.RspRequest('T%d' % (thread_id))
self.assertEqual("OK", reply)
# Test invalid thread id.
reply = connection.RspRequest('T42')
self.assertEqual("E02", reply)
def test_wasm_local(self):
with gdb_rsp.LaunchDebugStub(COMMAND) as connection:
module_load_addr = gdb_rsp.GetLoadedModuleAddress(connection)
breakpoint_addr = module_load_addr + test_basic.BREAK_ADDRESS_2
reply = connection.RspRequest('Z0,%x,1' % breakpoint_addr)
self.assertEqual("OK", reply)
reply = connection.RspRequest('c')
gdb_rsp.AssertReplySignal(reply, gdb_rsp.SIGTRAP)
reply = connection.RspRequest('qWasmLocal:0;0')
value = struct.unpack('I', gdb_rsp.DecodeHex(reply))[0]
self.assertEqual(test_basic.ARG_0, value)
reply = connection.RspRequest('qWasmLocal:0;1')
value = struct.unpack('I', gdb_rsp.DecodeHex(reply))[0]
self.assertEqual(test_basic.ARG_1, value)
# invalid local
reply = connection.RspRequest('qWasmLocal:0;9')
self.assertEqual("E03", reply)
def test_wasm_stack_value(self):
with gdb_rsp.LaunchDebugStub(COMMAND) as connection:
module_load_addr = gdb_rsp.GetLoadedModuleAddress(connection)
breakpoint_addr = module_load_addr + test_basic.BREAK_ADDRESS_2
reply = connection.RspRequest('Z0,%x,1' % breakpoint_addr)
self.assertEqual("OK", reply)
reply = connection.RspRequest('c')
gdb_rsp.AssertReplySignal(reply, gdb_rsp.SIGTRAP)
reply = connection.RspRequest('qWasmStackValue:0;0')
value = struct.unpack('I', gdb_rsp.DecodeHex(reply))[0]
self.assertEqual(test_basic.ARG_0, value)
reply = connection.RspRequest('qWasmStackValue:0;1')
value = struct.unpack('I', gdb_rsp.DecodeHex(reply))[0]
self.assertEqual(test_basic.ARG_1, value)
# invalid index
reply = connection.RspRequest('qWasmStackValue:0;2')
self.assertEqual("E03", reply)
def test_modifying_code_is_disallowed(self):
with gdb_rsp.LaunchDebugStub(COMMAND) as connection:
# Pick an arbitrary address in the code segment.
module_load_addr = gdb_rsp.GetLoadedModuleAddress(connection)
breakpoint_addr = module_load_addr + test_basic.BREAK_ADDRESS_1
# Writing to the code area should be disallowed.
data = '\x00'
write_command = 'M%x,%x:%s' % (breakpoint_addr, len(data), gdb_rsp.EncodeHex(data))
reply = connection.RspRequest(write_command)
self.assertEquals(reply, 'E03')
def Main():
index = sys.argv.index('--')
args = sys.argv[index + 1:]
# The remaining arguments go to unittest.main().
global COMMAND
COMMAND = args
unittest.main(argv=sys.argv[:index])
if __name__ == '__main__':
Main()
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