diff options
Diffstat (limited to 'sysdeps/arm/feenablxcpt.c')
-rw-r--r-- | sysdeps/arm/feenablxcpt.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/sysdeps/arm/feenablxcpt.c b/sysdeps/arm/feenablxcpt.c index afd8943..f54ca6e 100644 --- a/sysdeps/arm/feenablxcpt.c +++ b/sysdeps/arm/feenablxcpt.c @@ -25,7 +25,7 @@ int feenableexcept (int excepts) { - fpu_control_t fpscr, new_fpscr; + fpu_control_t fpscr, new_fpscr, updated_fpscr; /* Fail if a VFP unit isn't present. */ if (!ARM_HAVE_VFP) @@ -35,15 +35,15 @@ feenableexcept (int excepts) excepts &= FE_ALL_EXCEPT; new_fpscr = fpscr | (excepts << FE_EXCEPT_SHIFT); - _FPU_SETCW (new_fpscr); - - if (excepts != 0) + if (new_fpscr != fpscr) { + _FPU_SETCW (new_fpscr); + /* Not all VFP architectures support trapping exceptions, so test whether the relevant bits were set and fail if not. */ - _FPU_GETCW (new_fpscr); - if ((new_fpscr & (excepts << FE_EXCEPT_SHIFT)) - != (excepts << FE_EXCEPT_SHIFT)) + _FPU_GETCW (updated_fpscr); + + if (new_fpscr & ~updated_fpscr) return -1; } |