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author | Tim Newsome <tim@sifive.com> | 2023-07-17 11:58:35 -0700 |
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committer | GitHub <noreply@github.com> | 2023-07-17 11:58:35 -0700 |
commit | cf5360ff4b3bdfe218a42a74eacd64eb28da6cd3 (patch) | |
tree | 245e3790455f616193ec036cd5d219f9e20b7638 /debug/gdbserver.py | |
parent | 4d2b3182ddfc697fb252bccb7943d63a48115de0 (diff) | |
parent | 90691df14b8bf6607d15cbb6c3c23bf33449602c (diff) | |
download | riscv-tests-cf5360ff4b3bdfe218a42a74eacd64eb28da6cd3.zip riscv-tests-cf5360ff4b3bdfe218a42a74eacd64eb28da6cd3.tar.gz riscv-tests-cf5360ff4b3bdfe218a42a74eacd64eb28da6cd3.tar.bz2 |
Merge pull request #489 from riscv-software-src/power_dance
debug: Test OpenOCD behavior when harts become unavailable, using new spike mechanism
Diffstat (limited to 'debug/gdbserver.py')
-rwxr-xr-x | debug/gdbserver.py | 72 |
1 files changed, 59 insertions, 13 deletions
diff --git a/debug/gdbserver.py b/debug/gdbserver.py index ea3bb0c..97e49d8 100755 --- a/debug/gdbserver.py +++ b/debug/gdbserver.py @@ -19,7 +19,8 @@ from testlib import assertGreater, assertRegex, assertLess from testlib import GdbTest, GdbSingleHartTest, TestFailed from testlib import TestNotApplicable, CompileError from testlib import UnknownThread -from testlib import CouldNotReadRegisters +from testlib import CouldNotReadRegisters, CommandException +from testlib import ThreadTerminated MSTATUS_UIE = 0x00000001 MSTATUS_SIE = 0x00000002 @@ -1807,22 +1808,29 @@ class EbreakTest(GdbSingleHartTest): output = self.gdb.c() assertIn("_exit", output) -class CeaseMultiTest(GdbTest): - """Test that we work correctly when a hart ceases to respond (e.g. because +class UnavailableMultiTest(GdbTest): + """Test that we work correctly when a hart becomes unavailable (e.g. because it's powered down).""" compile_args = ("programs/counting_loop.c", "-DDEFINE_MALLOC", "-DDEFINE_FREE") def early_applicable(self): - return self.hart.support_cease and len(self.target.harts) > 1 + return (self.hart.support_cease or + self.target.support_unavailable_control) \ + and len(self.target.harts) > 1 def setup(self): ProgramTest.setup(self) - self.parkOtherHarts("precease") + self.parkOtherHarts() def test(self): # Run all the way to the infinite loop in exit - self.gdb.c(wait=False) + self.gdb.c_all(wait=False) + # Other hart should have become unavailable. + if self.target.support_unavailable_control: + self.server.wait_until_running(self.target.harts) + self.server.command( + f"riscv dmi_write 0x1f 0x{(1<<self.hart.id)&0x3:x}") self.gdb.expect(r"\S+ became unavailable.") self.gdb.interrupt() @@ -1834,7 +1842,7 @@ class CeaseMultiTest(GdbTest): self.gdb.p("$misa") assert False, \ "Shouldn't be able to access unavailable hart." - except UnknownThread: + except (UnknownThread, CommandException): pass # Check that the main hart can still be debugged. @@ -1872,11 +1880,12 @@ class CeaseStepiTest(ProgramTest): except CouldNotReadRegisters: pass -class CeaseRunTest(ProgramTest): +class UnavailableRunTest(ProgramTest): """Test that we work correctly when the hart we're debugging ceases to respond.""" def early_applicable(self): - return self.hart.support_cease + return self.hart.support_cease or \ + self.target.support_unavailable_control def test(self): self.gdb.b("main") @@ -1884,10 +1893,23 @@ class CeaseRunTest(ProgramTest): assertIn("Breakpoint", output) assertIn("main", output) - self.gdb.p("$pc=precease") + if self.target.support_unavailable_control: + self.gdb.p("$pc=loop_forever") + else: + self.gdb.p("$pc=cease") self.gdb.c(wait=False) + if self.target.support_unavailable_control: + self.server.wait_until_running([self.hart]) + self.server.command( + f"riscv dmi_write 0x1f 0x{(~(1<<self.hart.id))&0x3:x}") self.gdb.expect(r"\S+ became unavailable.") self.gdb.interrupt() + # gdb might automatically switch to the available hart. + try: + self.gdb.select_hart(self.hart) + except ThreadTerminated: + # GDB sees that the thread is gone. Count this as success. + return try: self.gdb.p("$pc") assert False, ("Registers shouldn't be accessible when the hart is " @@ -1895,6 +1917,33 @@ class CeaseRunTest(ProgramTest): except CouldNotReadRegisters: pass +class UnavailableCycleTest(ProgramTest): + """Test that harts can be debugged after becoming temporarily + unavailable.""" + def early_applicable(self): + return self.target.support_unavailable_control + + def test(self): + self.gdb.b("main") + output = self.gdb.c() + assertIn("Breakpoint", output) + assertIn("main", output) + + self.gdb.p("$pc=loop_forever") + self.gdb.c(wait=False) + self.server.wait_until_running([self.hart]) + self.server.command( + f"riscv dmi_write 0x1f 0x{(~(1<<self.hart.id))&0x3:x}") + self.gdb.expect(r"\S+ became unavailable.") + + # Now send a DMI command through OpenOCD to make the hart available + # again. + + self.server.command("riscv dmi_write 0x1f 0x3") + self.gdb.expect(r"\S+ became available") + self.gdb.interrupt() + self.gdb.p("$pc") + class FreeRtosTest(GdbTest): def early_applicable(self): return self.target.freertos_binary @@ -1989,7 +2038,6 @@ class EtriggerTest(DebugTest): self.gdb.b("handle_trap") def test(self): - self.gdb.command(f"monitor targets {self.hart.id}") # Set trigger on Load access fault self.gdb.command("monitor riscv etrigger set m 0x20") # Set fox to a null pointer so we'll get a load access exception later. @@ -2009,7 +2057,6 @@ class IcountTest(DebugTest): DebugTest.setup(self) self.gdb.b("main") self.gdb.c() - self.gdb.command(f"monitor targets {self.hart.id}") def test(self): # Execute 2 instructions. @@ -2039,7 +2086,6 @@ class ItriggerTest(GdbSingleHartTest): self.gdb.load() def test(self): - self.gdb.command(f"monitor targets {self.hart.id}") output = self.gdb.command("monitor riscv itrigger set 0x80") assertIn("Doesn't make sense", output) output = self.gdb.command("monitor riscv itrigger set m 0") |