98 lines
2.7 KiB
Python
98 lines
2.7 KiB
Python
|
from __future__ import print_function
|
||
|
|
#
|
||
|
|
# Test some of the softmmu debug features with the multiarch memory
|
||
|
|
# test. It is a port of the original vmlinux focused test case but
|
||
|
|
# using the "memory" test instead.
|
||
|
|
#
|
||
|
|
# This is launched via tests/guest-debug/run-test.py
|
||
|
|
#
|
||
|
|
|
||
|
|
import gdb
|
||
|
|
import sys
|
||
|
|
|
||
|
|
failcount = 0
|
||
|
|
|
||
|
|
|
||
|
|
def report(cond, msg):
|
||
|
|
"Report success/fail of test"
|
||
|
|
if cond:
|
||
|
|
print("PASS: %s" % (msg))
|
||
|
|
else:
|
||
|
|
print("FAIL: %s" % (msg))
|
||
|
|
global failcount
|
||
|
|
failcount += 1
|
||
|
|
|
||
|
|
|
||
|
|
def check_interrupt(thread):
|
||
|
|
"""
|
||
|
|
Check that, if thread is resumed, we go back to the same thread when the
|
||
|
|
program gets interrupted.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# Switch to the thread we're going to be running the test in.
|
||
|
|
print("thread ", thread.num)
|
||
|
|
gdb.execute("thr %d" % thread.num)
|
||
|
|
|
||
|
|
# Enter the loop() function on this thread.
|
||
|
|
#
|
||
|
|
# While there are cleaner ways to do this, we want to minimize the number of
|
||
|
|
# side effects on the gdbstub's internal state, since those may mask bugs.
|
||
|
|
# Ideally, there should be no difference between what we're doing here and
|
||
|
|
# the program reaching the loop() function on its own.
|
||
|
|
#
|
||
|
|
# For this to be safe, we only need the prologue of loop() to not have
|
||
|
|
# instructions that may have problems with what we're doing here. We don't
|
||
|
|
# have to worry about anything else, as this function never returns.
|
||
|
|
gdb.execute("set $pc = loop")
|
||
|
|
|
||
|
|
# Continue and then interrupt the task.
|
||
|
|
gdb.post_event(lambda: gdb.execute("interrupt"))
|
||
|
|
gdb.execute("c")
|
||
|
|
|
||
|
|
# Check whether the thread we're in after the interruption is the same we
|
||
|
|
# ran continue from.
|
||
|
|
return (thread.num == gdb.selected_thread().num)
|
||
|
|
|
||
|
|
|
||
|
|
def run_test():
|
||
|
|
"""
|
||
|
|
Test if interrupting the code always lands us on the same thread when
|
||
|
|
running with scheduler-lock enabled.
|
||
|
|
"""
|
||
|
|
|
||
|
|
gdb.execute("set scheduler-locking on")
|
||
|
|
for thread in gdb.selected_inferior().threads():
|
||
|
|
report(check_interrupt(thread),
|
||
|
|
"thread %d resumes correctly on interrupt" % thread.num)
|
||
|
|
|
||
|
|
|
||
|
|
#
|
||
|
|
# This runs as the script it sourced (via -x, via run-test.py)
|
||
|
|
#
|
||
|
|
try:
|
||
|
|
inferior = gdb.selected_inferior()
|
||
|
|
arch = inferior.architecture()
|
||
|
|
print("ATTACHED: %s" % arch.name())
|
||
|
|
except (gdb.error, AttributeError):
|
||
|
|
print("SKIPPING (not connected)", file=sys.stderr)
|
||
|
|
exit(0)
|
||
|
|
|
||
|
|
if gdb.parse_and_eval('$pc') == 0:
|
||
|
|
print("SKIP: PC not set")
|
||
|
|
exit(0)
|
||
|
|
if len(gdb.selected_inferior().threads()) == 1:
|
||
|
|
print("SKIP: set to run on a single thread")
|
||
|
|
exit(0)
|
||
|
|
|
||
|
|
try:
|
||
|
|
# Run the actual tests
|
||
|
|
run_test()
|
||
|
|
except (gdb.error):
|
||
|
|
print("GDB Exception: %s" % (sys.exc_info()[0]))
|
||
|
|
failcount += 1
|
||
|
|
pass
|
||
|
|
|
||
|
|
# Finally kill the inferior and exit gdb with a count of failures
|
||
|
|
gdb.execute("kill")
|
||
|
|
exit(failcount)
|