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authorJoseph Myers <joseph@codesourcery.com>2015-03-12 18:43:21 +0000
committerJoseph Myers <joseph@codesourcery.com>2015-03-12 18:43:21 +0000
commit7d67a196b6548562070ac11fc673c0d3d263d846 (patch)
tree34b3481a8038d6756a4a652951847cb04a2b78dd /sysdeps/powerpc/nofpu
parentaf85ebcdf7a754d3d3d3d26ba8250ab58310f535 (diff)
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soft-fp: Define and use _FP_STATIC_ASSERT.
This patch makes soft-fp use static assertions in place of conditional calls to abort, in places where there are checks for conditions (on the types for which a macro is used) that the code is not prepared to handle. The fallback definition of _FP_STATIC_ASSERT (for kernel use only, as only relevant to compilers not supported for building glibc) is as in misc/sys/cdefs.h. This means that soft-fp only ever calls abort for _FP_UNREACHABLE calls in builds with GCC versions before 4.5. Thus, there is no need for an abort declaration or <stdlib.h> include, since the kernel code handles defining abort as a macro itself - and so this avoids any need for an __KERNEL__ condition on the abort declaration to avoid it breaking with the kernel's macro definition. That is, this patch is intended to make glibc's soft-fp code suitable for kernel use with no kernel-local changes to the soft-fp code needed at all. Tested for powerpc-nofpu that installed stripped shared libraries are unchanged by the patch. One explicit <stdlib.h> include had to be added to a file that was relying on the include from soft-fp.h. * soft-fp/soft-fp.h (_FP_STATIC_ASSERT): New macro. [_LIBC]: Do not include <stdlib.h>. [!_LIBC] (abort): Remove declaration. * soft-fp/op-2.h (_FP_MUL_MEAT_2_120_240_double): Use _FP_STATIC_ASSERT instead of conditionally calling abort. * soft-fp/op-common.h (_FP_FROM_INT): Likewise. (_FP_EXTEND_CNAN): Likewise. (FP_TRUNC): Likewise. (__FP_CLZ): Likewise. * sysdeps/powerpc/nofpu/flt-rounds.c: Include <stdlib.h>.
Diffstat (limited to 'sysdeps/powerpc/nofpu')
-rw-r--r--sysdeps/powerpc/nofpu/flt-rounds.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/powerpc/nofpu/flt-rounds.c b/sysdeps/powerpc/nofpu/flt-rounds.c
index e581873..3792856 100644
--- a/sysdeps/powerpc/nofpu/flt-rounds.c
+++ b/sysdeps/powerpc/nofpu/flt-rounds.c
@@ -16,6 +16,8 @@
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
+#include <stdlib.h>
+
#include "soft-fp.h"
#include "soft-supp.h"