diff options
Diffstat (limited to 'gdb/testsuite/gdb.arch/amd64-init-x87-values.exp')
| -rw-r--r-- | gdb/testsuite/gdb.arch/amd64-init-x87-values.exp | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/gdb/testsuite/gdb.arch/amd64-init-x87-values.exp b/gdb/testsuite/gdb.arch/amd64-init-x87-values.exp index cdf92dc..5fd18db 100644 --- a/gdb/testsuite/gdb.arch/amd64-init-x87-values.exp +++ b/gdb/testsuite/gdb.arch/amd64-init-x87-values.exp @@ -116,7 +116,7 @@ proc_with_prefix check_x87_regs_around_init {} { # nop that does not enable any FP features). Finally check that the # mxcsr register still has the value we set. proc_with_prefix check_setting_mxcsr_before_enable {} { - global binfile + global binfile gdb_prompt clean_restart ${binfile} @@ -127,7 +127,22 @@ proc_with_prefix check_setting_mxcsr_before_enable {} { gdb_test_no_output "set \$mxcsr=0x9f80" "set a new value for MXCSR" gdb_test "stepi" "fwait" "step forward one instruction for mxcsr test" - gdb_test "p/x \$mxcsr" " = 0x9f80" "check new value of MXCSR is still in place" + + set test "check new value of MXCSR is still in place" + set pass_pattern " = 0x9f80" + # Pre-4.14 kernels have a bug (fixed by commit 0852b374173b "x86/fpu: + # Add FPU state copying quirk to handle XRSTOR failure on Intel Skylake + # CPUs") that causes mxcsr not to be copied, in which case we get 0 instead of + # the just saved value. + set xfail_pattern " = 0x0" + gdb_test_multiple "p/x \$mxcsr" $test { + -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" { + pass $test + } + -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" { + xfail $test + } + } } # Start the test file, all FP features will be disabled. Set new |