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Improve test for Intel(R) MPX registers. 

Summary:
Let the inferior test code determine if CPU and kernel support Intel(R)
MPX and cleanup test script.

Differential Revision: https://reviews.llvm.org/D25328

llvm-svn: 283461
This commit is contained in:
Valentina Giusti 2016-10-06 15:49:10 +00:00
parent d03c85c02e
commit 0670ad14f8
2 changed files with 8 additions and 25 deletions
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15
lldb/packages/Python/lldbsuite/test/functionalities/register/intel_xtended_registers/TestMPXRegisters.py
View File

@ -1,5 +1,5 @@
"""
Test the MPX registers.
Test the Intel(R) MPX registers.
"""
from __future__ import print_function
@ -21,23 +21,18 @@ class RegisterCommandsTestCase(TestBase):
def setUp(self):
TestBase.setUp(self)
self.has_teardown = False
def tearDown(self):
self.dbg.GetSelectedTarget().GetProcess().Destroy()
TestBase.tearDown(self)
@skipIf(compiler="clang")
@skipIf(oslist=["linux"], compiler="gcc", compiler_version=["<", "5"]) #GCC version >= 5 supports MPX.
@skipIf(oslist=no_match(['linux']))
@skipIf(archs=no_match(['i386', 'x86_64']))
@skipIf(oslist=["linux"], compiler="gcc", compiler_version=["<", "5"]) #GCC version >= 5 supports Intel(R) MPX.
def test_mpx_registers_with_example_code(self):
"""Test MPX registers with example code."""
"""Test Intel(R) MPX registers with example code."""
self.build()
self.mpx_registers_with_example_code()
def mpx_registers_with_example_code(self):
"""Test MPX registers after running example code."""
"""Test Intel(R) MPX registers after running example code."""
self.line = line_number('main.cpp', '// Set a break point here.')
exe = os.path.join(os.getcwd(), "a.out")
@ -50,7 +45,7 @@ class RegisterCommandsTestCase(TestBase):
process = target.GetProcess()
if (process.GetState() == lldb.eStateExited):
self.skipTest("HW doesn't support MPX feature.")
self.skipTest("Intel(R) MPX is not supported.")
else:
self.expect("thread backtrace", STOPPED_DUE_TO_BREAKPOINT,
substrs = ["stop reason = breakpoint 1."])

18
lldb/packages/Python/lldbsuite/test/functionalities/register/intel_xtended_registers/main.cpp
View File

@ -14,23 +14,11 @@
int
main(int argc, char const *argv[])
{
unsigned int rax, rbx, rcx, rdx;
// Check if XSAVE is enabled.
if (!__get_cpuid(1, &rax, &rbx, &rcx, &rdx) || (rcx & bit_OSXSAVE) != bit_OSXSAVE)
// This call returns 0 only if the CPU and the kernel support Intel(R) MPX.
if (prctl(PR_MPX_ENABLE_MANAGEMENT, 0, 0, 0, 0) != 0)
return -1;
// Check if MPX is enabled.
if (__get_cpuid_max(0, NULL) > 7)
{
__cpuid_count(7, 0, rax, rbx, rcx, rdx);
if ((rbx & bit_MPX) != bit_MPX)
return -1;
}
else
return -1;
// Run MPX test code.
// Run Intel(R) MPX test code.
#if defined(__x86_64__)
asm("mov $16, %rax\n\t"
"mov $9, %rdx\n\t"