74e9318689
This changelist makes the GDB-stub actually execute GDB-remote commands, by accessing the Wasm engine state. More precisely: - class GdbServer registers DebugDelegates that receive debug notifications when a new Wasm module is loaded, when execution suspends at a breakpoint or for an unhandled exception. - Since the GDB-remote commands arrive on a separate thread, all queries from the debugger are transformed into Task objects, that are posted into a TaskRunner that runs in the Isolate thread. - class WasmModuleDebug contains the logic to retrieve the value of globals, locals, memory ranges from the Wasm engine and to add/remove breakpoints. Build with: v8_enable_wasm_gdb_remote_debugging = true Run with: --wasm-gdb-remote Test with: python tools\run-tests.py --outdir=out\debug_x64 debugging -j 1 Bug: chromium:1010467 Change-Id: I9703894620a027d3c920926db92e2ff809d84ab8 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1941139 Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Clemens Backes <clemensb@chromium.org> Commit-Queue: Paolo Severini <paolosev@microsoft.com> Cr-Commit-Position: refs/heads/master@{#67412}
57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
# Copyright 2020 the V8 project authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Flags: -expose-wasm --wasm-gdb-remote --wasm-pause-waiting-for-debugger test/debugging/wasm/gdb-server/test_files/test_basic.js
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import sys
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import unittest
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import gdb_rsp
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import test_files.test_basic as test_basic
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# These are set up by Main().
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COMMAND = None
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class Tests(unittest.TestCase):
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def test_single_step(self):
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with gdb_rsp.LaunchDebugStub(COMMAND) as connection:
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module_load_addr = gdb_rsp.GetLoadedModuleAddress(connection)
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bp_addr = module_load_addr + test_basic.BREAK_ADDRESS_0
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reply = connection.RspRequest('Z0,%x,1' % bp_addr)
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self.assertEqual("OK", reply)
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reply = connection.RspRequest('c')
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gdb_rsp.AssertReplySignal(reply, gdb_rsp.SIGTRAP)
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# We expect 's' to stop at the next instruction.
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reply = connection.RspRequest('s')
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gdb_rsp.AssertReplySignal(reply, gdb_rsp.SIGTRAP)
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tid = gdb_rsp.ParseThreadStopReply(reply)['thread_id']
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self.assertEqual(tid, 1)
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regs = gdb_rsp.DecodeRegs(connection.RspRequest('g'))
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self.assertEqual(regs['pc'], module_load_addr + test_basic.BREAK_ADDRESS_1)
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# Again.
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reply = connection.RspRequest('s')
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gdb_rsp.AssertReplySignal(reply, gdb_rsp.SIGTRAP)
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tid = gdb_rsp.ParseThreadStopReply(reply)['thread_id']
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self.assertEqual(tid, 1)
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regs = gdb_rsp.DecodeRegs(connection.RspRequest('g'))
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self.assertEqual(regs['pc'], module_load_addr + test_basic.BREAK_ADDRESS_2)
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# Check that we can continue after single-stepping.
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reply = connection.RspRequest('c')
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gdb_rsp.AssertReplySignal(reply, gdb_rsp.SIGTRAP)
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def Main():
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index = sys.argv.index('--')
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args = sys.argv[index + 1:]
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# The remaining arguments go to unittest.main().
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global COMMAND
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COMMAND = args
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unittest.main(argv=sys.argv[:index])
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if __name__ == '__main__':
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Main()
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