c0eeee7a78
Summary:
The Boundary Table Entries are stored in the application memory and allow
to store boundary info for all the pointers of the program, also those that
otherwise wouldn't fit in the 4 bound registers provided by the HW.
Here is an example of how it works:
* mpx-table show <pointer>
lbound = 0x..., ubound = 0x..., (pointer value = 0x..., metadata = 0x...)
* mpx-table set <pointer>
Signed-off-by: Valentina Giusti <valentina.giusti@intel.com>
Reviewers: labath, clayborg
Reviewed By: clayborg
Subscribers: lldb-commits, mgorny
Differential Revision: https://reviews.llvm.org/D29078
llvm-svn: 293660
169 lines
6.2 KiB
Python
169 lines
6.2 KiB
Python
"""
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Test mpx-table command.
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"""
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from __future__ import print_function
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import os
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import time
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import re
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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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class TestMPXTable(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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def setUp(self):
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TestBase.setUp(self)
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@skipIf(compiler="clang")
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@skipIf(oslist=no_match(['linux']))
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@skipIf(archs=no_match(['i386', 'x86_64']))
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@skipIf(compiler="gcc", compiler_version=["<", "5"]) #GCC version >= 5 supports Intel(R) MPX.
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def test_show_command(self):
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"""Test 'mpx-table show' command"""
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self.build()
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lldb_exec_dir = os.environ["LLDB_IMPLIB_DIR"]
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lldb_lib_dir = os.path.join(lldb_exec_dir, os.pardir, "lib")
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plugin_file = os.path.join(lldb_lib_dir, "liblldb-intel-mpxtable.so")
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if not os.path.isfile(plugin_file):
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self.skipTest("Intel(R) mpx-table plugin missing.")
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plugin_command = " "
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seq = ("plugin", "load", plugin_file)
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plugin_command = plugin_command.join(seq)
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self.runCmd(plugin_command)
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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self.b1 = line_number('main.cpp', '// Break 1.')
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self.b2 = line_number('main.cpp', '// Break 2.')
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self.b3 = line_number('main.cpp', '// Break 3.')
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self.b4 = line_number('main.cpp', '// Break 4.')
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lldbutil.run_break_set_by_file_and_line(self, "main.cpp", self.b1, num_expected_locations=1)
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lldbutil.run_break_set_by_file_and_line(self, "main.cpp", self.b2, num_expected_locations=1)
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lldbutil.run_break_set_by_file_and_line(self, "main.cpp", self.b3, num_expected_locations=1)
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lldbutil.run_break_set_by_file_and_line(self, "main.cpp", self.b4, num_expected_locations=1)
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self.runCmd("run", RUN_SUCCEEDED)
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target = self.dbg.GetSelectedTarget()
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process = target.GetProcess()
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if (process.GetState() == lldb.eStateExited):
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self.skipTest("Intel(R) MPX is not supported.")
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else:
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self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ["stop reason = breakpoint 1."])
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self.expect("mpx-table show a",
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substrs = ['lbound = 0x',
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', ubound = 0x',
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'(pointer value = 0x',
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', metadata = 0x',
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')'],
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error = False)
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self.expect("continue", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ["stop reason = breakpoint 2."])
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# Check that out of scope pointer cannot be reached.
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#
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self.expect("mpx-table show a",
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substrs = ['Invalid pointer.'],
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error = True)
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self.expect("mpx-table show tmp",
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substrs = ['lbound = 0x',
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', ubound = 0x',
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'(pointer value = 0x',
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', metadata = 0x',
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')'],
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error = False)
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self.expect("continue", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ["stop reason = breakpoint 3."])
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# Check that the pointer value is correctly updated.
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#
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self.expect("mpx-table show tmp",
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substrs = ['lbound = 0x',
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', ubound = 0x',
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'(pointer value = 0x2',
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', metadata = 0x',
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')'],
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error = False)
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self.expect("continue", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ["stop reason = breakpoint 4."])
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# After going back to main(), check that out of scope pointer cannot be
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# reached.
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#
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self.expect("mpx-table show tmp",
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substrs = ['Invalid pointer.'],
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error = True)
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self.expect("mpx-table show a",
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substrs = ['lbound = 0x',
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', ubound = 0x',
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'(pointer value = 0x',
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', metadata = 0x',
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')'],
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error = False)
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def test_set_command(self):
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"""Test 'mpx-table set' command"""
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self.build()
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lldb_exec_dir = os.environ["LLDB_IMPLIB_DIR"]
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lldb_lib_dir = os.path.join(lldb_exec_dir, os.pardir, "lib")
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plugin_file = os.path.join(lldb_lib_dir, "liblldb-intel-mpxtable.so")
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if not os.path.isfile(plugin_file):
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self.skipTest("Intel(R) mpx-table plugin missing.")
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plugin_command = " "
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seq = ("plugin", "load", plugin_file)
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plugin_command = plugin_command.join(seq)
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self.runCmd(plugin_command)
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exe = os.path.join(os.getcwd(), "a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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self.b1 = line_number('main.cpp', '// Break 1.')
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lldbutil.run_break_set_by_file_and_line(self, "main.cpp", self.b1, num_expected_locations=1)
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self.runCmd("run", RUN_SUCCEEDED)
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target = self.dbg.GetSelectedTarget()
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process = target.GetProcess()
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if (process.GetState() == lldb.eStateExited):
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self.skipTest("Intel(R) MPX is not supported.")
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else:
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self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ["stop reason = breakpoint 1."])
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# Check that the BT Entry doesn't already contain the test values.
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#
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self.expect("mpx-table show a", matching=False,
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substrs = ['lbound = 0xcafecafe',
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', ubound = 0xbeefbeef'])
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# Set the test values.
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#
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self.expect("mpx-table set a 0xcafecafe 0xbeefbeef", error = False)
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# Verify that the test values have been correctly written in the BT
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# entry.
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#
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self.expect("mpx-table show a",
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substrs = ['lbound = 0xcafecafe',
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', ubound = 0xbeefbeef'],
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error = False)
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