5e668fe84f
This commit implements, in debugserver, the packet as discussed in the RFC [1]. [1]: https://discourse.llvm.org/t/rfc-a-new-vectorized-memory-read-packet/88441
103 lines
4.0 KiB
Python
103 lines
4.0 KiB
Python
"""
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Tests debugserver support for MultiMemRead.
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"""
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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@skipUnlessDarwin
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@skipIfOutOfTreeDebugserver
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class TestCase(TestBase):
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def send_process_packet(self, packet_str):
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self.runCmd(f"proc plugin packet send {packet_str}", check=False)
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# The output is of the form:
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# packet: <packet_str>
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# response: <response>
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reply = self.res.GetOutput().split("\n")
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packet = reply[0].strip()
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response = reply[1].strip()
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self.assertTrue(packet.startswith("packet: "))
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self.assertTrue(response.startswith("response: "))
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return response[len("response: ") :]
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def check_invalid_packet(self, packet_str):
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reply = self.send_process_packet("packet_str")
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self.assertEqual(reply, "E03")
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def test_packets(self):
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self.build()
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source_file = lldb.SBFileSpec("main.c")
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target, process, thread, bkpt = lldbutil.run_to_source_breakpoint(
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self, "break here", source_file
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)
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reply = self.send_process_packet("qSupported")
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self.assertIn("MultiMemRead+", reply)
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mem_address_var = thread.frames[0].FindVariable("memory")
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self.assertTrue(mem_address_var)
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mem_address = mem_address_var.GetValueAsUnsigned() + 42
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# no ":"
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self.check_invalid_packet("MultiMemRead")
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# missing ranges
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self.check_invalid_packet("MultiMemRead:")
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# needs at least one range
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self.check_invalid_packet("MultiMemRead:ranges:")
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# needs at least one range
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self.check_invalid_packet("MultiMemRead:ranges:,")
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# a range is a pair of numbers
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self.check_invalid_packet("MultiMemRead:ranges:10")
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# a range is a pair of numbers
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self.check_invalid_packet("MultiMemRead:ranges:10,")
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# range list must end with ;
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self.check_invalid_packet("MultiMemRead:ranges:10,2")
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self.check_invalid_packet("MultiMemRead:ranges:10,2,")
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self.check_invalid_packet("MultiMemRead:ranges:10,2,3")
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# ranges are pairs of numbers.
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self.check_invalid_packet("MultiMemRead:ranges:10,2,3;")
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# unrecognized field
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self.check_invalid_packet("MultiMemRead:ranges:10,2;blah:;")
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# unrecognized field
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self.check_invalid_packet("MultiMemRead:blah:;ranges:10,2;")
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# Zero-length reads are ok.
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reply = self.send_process_packet("MultiMemRead:ranges:0,0;")
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self.assertEqual(reply, "0;")
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# Debugserver is permissive with trailing commas.
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reply = self.send_process_packet("MultiMemRead:ranges:10,2,;")
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self.assertEqual(reply, "0;")
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reply = self.send_process_packet(f"MultiMemRead:ranges:{mem_address:x},2,;")
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self.assertEqual(reply, "2;ab")
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reply = self.send_process_packet("MultiMemRead:ranges:10,2;")
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self.assertEqual(reply, "0;")
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reply = self.send_process_packet(f"MultiMemRead:ranges:{mem_address:x},0;")
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self.assertEqual(reply, "0;")
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reply = self.send_process_packet(f"MultiMemRead:ranges:{mem_address:x},2;")
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self.assertEqual(reply, "2;ab")
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reply = self.send_process_packet(
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f"MultiMemRead:ranges:{mem_address:x},2,{mem_address+2:x},4;"
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)
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self.assertEqual(reply, "2,4;abcdef")
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reply = self.send_process_packet(
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f"MultiMemRead:ranges:{mem_address:x},2,{mem_address+2:x},4,{mem_address+6:x},8;"
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)
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self.assertEqual(reply, "2,4,8;abcdefghijklmn")
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# Test zero length in the middle.
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reply = self.send_process_packet(
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f"MultiMemRead:ranges:{mem_address:x},2,{mem_address+2:x},0,{mem_address+6:x},8;"
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)
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self.assertEqual(reply, "2,0,8;abghijklmn")
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# Test zero length in the end.
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reply = self.send_process_packet(
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f"MultiMemRead:ranges:{mem_address:x},2,{mem_address+2:x},4,{mem_address+6:x},0;"
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)
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self.assertEqual(reply, "2,4,0;abcdef")
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