v8/test/debugging/wasm/gdb-server/stepping.py

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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 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_single_step(self):
with gdb_rsp.LaunchDebugStub(COMMAND) as connection:
module_load_addr = gdb_rsp.GetLoadedModuleAddress(connection)
bp_addr = module_load_addr + test_basic.BREAK_ADDRESS_0
reply = connection.RspRequest('Z0,%x,1' % bp_addr)
self.assertEqual("OK", reply)
reply = connection.RspRequest('c')
gdb_rsp.AssertReplySignal(reply, gdb_rsp.SIGTRAP)
# We expect 's' to stop at the next instruction.
reply = connection.RspRequest('s')
gdb_rsp.AssertReplySignal(reply, gdb_rsp.SIGTRAP)
tid = gdb_rsp.ParseThreadStopReply(reply)['thread_id']
self.assertEqual(tid, 1)
regs = gdb_rsp.DecodeRegs(connection.RspRequest('g'))
self.assertEqual(regs['pc'], module_load_addr + test_basic.BREAK_ADDRESS_1)
# Again.
reply = connection.RspRequest('s')
gdb_rsp.AssertReplySignal(reply, gdb_rsp.SIGTRAP)
tid = gdb_rsp.ParseThreadStopReply(reply)['thread_id']
self.assertEqual(tid, 1)
regs = gdb_rsp.DecodeRegs(connection.RspRequest('g'))
self.assertEqual(regs['pc'], module_load_addr + test_basic.BREAK_ADDRESS_2)
# Check that we can continue after single-stepping.
reply = connection.RspRequest('c')
gdb_rsp.AssertReplySignal(reply, gdb_rsp.SIGTRAP)
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()