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author | Joseph Myers <joseph@codesourcery.com> | 2015-10-28 18:50:20 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2015-10-28 18:50:20 +0000 |
commit | 0b9af583a5c2d68085e88cece13952bf05dc4882 (patch) | |
tree | efc4a66a9b018447c371749d91cf8a5b8508754f /sysdeps/x86/fpu/Makefile | |
parent | eae6c382bdca2e7ac582a69d56c9c228b678ee67 (diff) | |
download | glibc-0b9af583a5c2d68085e88cece13952bf05dc4882.tar.gz glibc-0b9af583a5c2d68085e88cece13952bf05dc4882.tar.xz glibc-0b9af583a5c2d68085e88cece13952bf05dc4882.zip |
Fix i386/x86_64 fesetenv SSE exception clearing (bug 19181).
The i386 and x86_64 versions of fesetenv, when called with FE_DFL_ENV or FE_NOMASK_ENV as argument, do not clear SSE exceptions raised in MXCSR. These arguments should, like other fenv_t values, represent the whole of the floating-point state, so such exceptions should be cleared; this patch adds the required clearing. (Discovered while working on bug 16068.) Tested for x86_64 and x86. [BZ #19181] * sysdeps/i386/fpu/fesetenv.c (__fesetenv): Clear already-raised SSE exceptions when argument is FE_DFL_ENV or FE_NOMASK_ENV. * sysdeps/x86_64/fpu/fesetenv.c (__fesetenv): Likewise. * math/test-fenv-clear-main.c: New file. * math/test-fenv-clear.c: Likewise. * math/Makefile (tests): Add test-fenv-clear. * sysdeps/x86/fpu/test-fenv-clear-sse.c: New file. * sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add test-fenv-clear-sse. [$(subdir) = math] (CFLAGS-test-fenv-clear-sse.c): New variable.
Diffstat (limited to 'sysdeps/x86/fpu/Makefile')
-rw-r--r-- | sysdeps/x86/fpu/Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sysdeps/x86/fpu/Makefile b/sysdeps/x86/fpu/Makefile index 9cb7bb2d85..d38497cff3 100644 --- a/sysdeps/x86/fpu/Makefile +++ b/sysdeps/x86/fpu/Makefile @@ -1,5 +1,6 @@ ifeq ($(subdir),math) libm-support += powl_helper -tests += test-fenv-sse +tests += test-fenv-sse test-fenv-clear-sse CFLAGS-test-fenv-sse.c += -msse2 -mfpmath=sse +CFLAGS-test-fenv-clear-sse.c += -msse2 -mfpmath=sse endif |