diff options
Diffstat (limited to 'sysdeps/aarch64/fpu/feenablxcpt.c')
| -rw-r--r-- | sysdeps/aarch64/fpu/feenablxcpt.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/sysdeps/aarch64/fpu/feenablxcpt.c b/sysdeps/aarch64/fpu/feenablxcpt.c index 82ed0b623c..dff1050e66 100644 --- a/sysdeps/aarch64/fpu/feenablxcpt.c +++ b/sysdeps/aarch64/fpu/feenablxcpt.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2001-2015 Free Software Foundation, Inc. +/* Copyright (C) 2001-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -24,24 +24,22 @@ feenableexcept (int excepts) { fpu_control_t fpcr; fpu_control_t fpcr_new; + fpu_control_t updated_fpcr; _FPU_GETCW (fpcr); excepts &= FE_ALL_EXCEPT; fpcr_new = fpcr | (excepts << FE_EXCEPT_SHIFT); if (fpcr != fpcr_new) - _FPU_SETCW (fpcr_new); - - /* Trapping exceptions are optional in AArch64 the relevant enable - bits in FPCR are RES0 hence the absence of support can be - detected by reading back the FPCR and comparing with the required - value. */ - if (excepts) { - fpu_control_t updated_fpcr; + _FPU_SETCW (fpcr_new); + /* Trapping exceptions are optional in AArch64; the relevant enable + bits in FPCR are RES0 hence the absence of support can be detected + by reading back the FPCR and comparing with the required value. */ _FPU_GETCW (updated_fpcr); - if (((updated_fpcr >> FE_EXCEPT_SHIFT) & excepts) != excepts) + + if (fpcr_new & ~updated_fpcr) return -1; } |