mirror of
https://github.com/Motorhead1991/qemu.git
synced 2025-08-02 15:23:53 -06:00
tests/acceptance: rename tests acceptance to tests avocado
In the discussion about renaming the `tests/acceptance` [1], the conclusion was that the folders inside `tests` are related to the framework running the tests and not directly related to the type of the tests. This changes the folder to `tests/avocado` and adjusts the MAKEFILE, the CI related files and the documentation. [1] https://lists.gnu.org/archive/html/qemu-devel/2021-05/msg06553.html Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Willian Rampazzo <willianr@redhat.com> Message-Id: <20211105155354.154864-3-willianr@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
parent
333d7036ef
commit
bbbd9b6ec6
64 changed files with 104 additions and 105 deletions
210
tests/avocado/reverse_debugging.py
Normal file
210
tests/avocado/reverse_debugging.py
Normal file
|
@ -0,0 +1,210 @@
|
|||
# Reverse debugging test
|
||||
#
|
||||
# Copyright (c) 2020 ISP RAS
|
||||
#
|
||||
# Author:
|
||||
# Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
|
||||
#
|
||||
# This work is licensed under the terms of the GNU GPL, version 2 or
|
||||
# later. See the COPYING file in the top-level directory.
|
||||
import os
|
||||
import logging
|
||||
|
||||
from avocado import skipIf
|
||||
from avocado_qemu import BUILD_DIR
|
||||
from avocado.utils import gdb
|
||||
from avocado.utils import process
|
||||
from avocado.utils.network.ports import find_free_port
|
||||
from avocado.utils.path import find_command
|
||||
from boot_linux_console import LinuxKernelTest
|
||||
|
||||
class ReverseDebugging(LinuxKernelTest):
|
||||
"""
|
||||
Test GDB reverse debugging commands: reverse step and reverse continue.
|
||||
Recording saves the execution of some instructions and makes an initial
|
||||
VM snapshot to allow reverse execution.
|
||||
Replay saves the order of the first instructions and then checks that they
|
||||
are executed backwards in the correct order.
|
||||
After that the execution is replayed to the end, and reverse continue
|
||||
command is checked by setting several breakpoints, and asserting
|
||||
that the execution is stopped at the last of them.
|
||||
"""
|
||||
|
||||
timeout = 10
|
||||
STEPS = 10
|
||||
endian_is_le = True
|
||||
|
||||
def run_vm(self, record, shift, args, replay_path, image_path, port):
|
||||
logger = logging.getLogger('replay')
|
||||
vm = self.get_vm()
|
||||
vm.set_console()
|
||||
if record:
|
||||
logger.info('recording the execution...')
|
||||
mode = 'record'
|
||||
else:
|
||||
logger.info('replaying the execution...')
|
||||
mode = 'replay'
|
||||
vm.add_args('-gdb', 'tcp::%d' % port, '-S')
|
||||
vm.add_args('-icount', 'shift=%s,rr=%s,rrfile=%s,rrsnapshot=init' %
|
||||
(shift, mode, replay_path),
|
||||
'-net', 'none')
|
||||
vm.add_args('-drive', 'file=%s,if=none' % image_path)
|
||||
if args:
|
||||
vm.add_args(*args)
|
||||
vm.launch()
|
||||
return vm
|
||||
|
||||
@staticmethod
|
||||
def get_reg_le(g, reg):
|
||||
res = g.cmd(b'p%x' % reg)
|
||||
num = 0
|
||||
for i in range(len(res))[-2::-2]:
|
||||
num = 0x100 * num + int(res[i:i + 2], 16)
|
||||
return num
|
||||
|
||||
@staticmethod
|
||||
def get_reg_be(g, reg):
|
||||
res = g.cmd(b'p%x' % reg)
|
||||
return int(res, 16)
|
||||
|
||||
def get_reg(self, g, reg):
|
||||
# value may be encoded in BE or LE order
|
||||
if self.endian_is_le:
|
||||
return self.get_reg_le(g, reg)
|
||||
else:
|
||||
return self.get_reg_be(g, reg)
|
||||
|
||||
def get_pc(self, g):
|
||||
return self.get_reg(g, self.REG_PC)
|
||||
|
||||
def check_pc(self, g, addr):
|
||||
pc = self.get_pc(g)
|
||||
if pc != addr:
|
||||
self.fail('Invalid PC (read %x instead of %x)' % (pc, addr))
|
||||
|
||||
@staticmethod
|
||||
def gdb_step(g):
|
||||
g.cmd(b's', b'T05thread:01;')
|
||||
|
||||
@staticmethod
|
||||
def gdb_bstep(g):
|
||||
g.cmd(b'bs', b'T05thread:01;')
|
||||
|
||||
@staticmethod
|
||||
def vm_get_icount(vm):
|
||||
return vm.qmp('query-replay')['return']['icount']
|
||||
|
||||
def reverse_debugging(self, shift=7, args=None):
|
||||
logger = logging.getLogger('replay')
|
||||
|
||||
# create qcow2 for snapshots
|
||||
logger.info('creating qcow2 image for VM snapshots')
|
||||
image_path = os.path.join(self.workdir, 'disk.qcow2')
|
||||
qemu_img = os.path.join(BUILD_DIR, 'qemu-img')
|
||||
if not os.path.exists(qemu_img):
|
||||
qemu_img = find_command('qemu-img', False)
|
||||
if qemu_img is False:
|
||||
self.cancel('Could not find "qemu-img", which is required to '
|
||||
'create the temporary qcow2 image')
|
||||
cmd = '%s create -f qcow2 %s 128M' % (qemu_img, image_path)
|
||||
process.run(cmd)
|
||||
|
||||
replay_path = os.path.join(self.workdir, 'replay.bin')
|
||||
port = find_free_port()
|
||||
|
||||
# record the log
|
||||
vm = self.run_vm(True, shift, args, replay_path, image_path, port)
|
||||
while self.vm_get_icount(vm) <= self.STEPS:
|
||||
pass
|
||||
last_icount = self.vm_get_icount(vm)
|
||||
vm.shutdown()
|
||||
|
||||
logger.info("recorded log with %s+ steps" % last_icount)
|
||||
|
||||
# replay and run debug commands
|
||||
vm = self.run_vm(False, shift, args, replay_path, image_path, port)
|
||||
logger.info('connecting to gdbstub')
|
||||
g = gdb.GDBRemote('127.0.0.1', port, False, False)
|
||||
g.connect()
|
||||
r = g.cmd(b'qSupported')
|
||||
if b'qXfer:features:read+' in r:
|
||||
g.cmd(b'qXfer:features:read:target.xml:0,ffb')
|
||||
if b'ReverseStep+' not in r:
|
||||
self.fail('Reverse step is not supported by QEMU')
|
||||
if b'ReverseContinue+' not in r:
|
||||
self.fail('Reverse continue is not supported by QEMU')
|
||||
|
||||
logger.info('stepping forward')
|
||||
steps = []
|
||||
# record first instruction addresses
|
||||
for _ in range(self.STEPS):
|
||||
pc = self.get_pc(g)
|
||||
logger.info('saving position %x' % pc)
|
||||
steps.append(pc)
|
||||
self.gdb_step(g)
|
||||
|
||||
# visit the recorded instruction in reverse order
|
||||
logger.info('stepping backward')
|
||||
for addr in steps[::-1]:
|
||||
self.gdb_bstep(g)
|
||||
self.check_pc(g, addr)
|
||||
logger.info('found position %x' % addr)
|
||||
|
||||
logger.info('seeking to the end (icount %s)' % (last_icount - 1))
|
||||
vm.qmp('replay-break', icount=last_icount - 1)
|
||||
# continue - will return after pausing
|
||||
g.cmd(b'c', b'T02thread:01;')
|
||||
|
||||
logger.info('setting breakpoints')
|
||||
for addr in steps:
|
||||
# hardware breakpoint at addr with len=1
|
||||
g.cmd(b'Z1,%x,1' % addr, b'OK')
|
||||
|
||||
logger.info('running reverse continue to reach %x' % steps[-1])
|
||||
# reverse continue - will return after stopping at the breakpoint
|
||||
g.cmd(b'bc', b'T05thread:01;')
|
||||
|
||||
# assume that none of the first instructions is executed again
|
||||
# breaking the order of the breakpoints
|
||||
self.check_pc(g, steps[-1])
|
||||
logger.info('successfully reached %x' % steps[-1])
|
||||
|
||||
logger.info('exitting gdb and qemu')
|
||||
vm.shutdown()
|
||||
|
||||
class ReverseDebugging_X86_64(ReverseDebugging):
|
||||
REG_PC = 0x10
|
||||
REG_CS = 0x12
|
||||
def get_pc(self, g):
|
||||
return self.get_reg_le(g, self.REG_PC) \
|
||||
+ self.get_reg_le(g, self.REG_CS) * 0x10
|
||||
|
||||
# unidentified gitlab timeout problem
|
||||
@skipIf(os.getenv('GITLAB_CI'), 'Running on GitLab')
|
||||
def test_x86_64_pc(self):
|
||||
"""
|
||||
:avocado: tags=arch:x86_64
|
||||
:avocado: tags=machine:pc
|
||||
"""
|
||||
# start with BIOS only
|
||||
self.reverse_debugging()
|
||||
|
||||
class ReverseDebugging_AArch64(ReverseDebugging):
|
||||
REG_PC = 32
|
||||
|
||||
# unidentified gitlab timeout problem
|
||||
@skipIf(os.getenv('GITLAB_CI'), 'Running on GitLab')
|
||||
def test_aarch64_virt(self):
|
||||
"""
|
||||
:avocado: tags=arch:aarch64
|
||||
:avocado: tags=machine:virt
|
||||
:avocado: tags=cpu:cortex-a53
|
||||
"""
|
||||
kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora'
|
||||
'/linux/releases/29/Everything/aarch64/os/images/pxeboot'
|
||||
'/vmlinuz')
|
||||
kernel_hash = '8c73e469fc6ea06a58dc83a628fc695b693b8493'
|
||||
kernel_path = self.fetch_asset(kernel_url, asset_hash=kernel_hash)
|
||||
|
||||
self.reverse_debugging(
|
||||
args=('-kernel', kernel_path))
|
Loading…
Add table
Add a link
Reference in a new issue