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powerpc: Fix fesetexceptflag [BZ#17885] 

This patch fixes a bug introduced by 18f2945ae9, where it optimizes
the FPSCR set by just issuing a mtfs instruction if new flag is different
from older one.  The issue is a typo, where the new flag should the the
new value, instead of the old one.

It fixes BZ#17885.
This commit is contained in:
Adhemerval Zanella 2015-01-27 06:37:10 -06:00
parent 08cee2a464
commit d4d0ecb244
3 changed files with 6 additions and 2 deletions
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4
ChangeLog
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@ -1,5 +1,9 @@
2015-01-28 Adhemerval Zanellla <azanella@linux.vnet.ibm.com> 2015-01-28 Adhemerval Zanellla <azanella@linux.vnet.ibm.com>
[BZ #17885]
* sysdeps/powerpc/fpu/fsetexcptflg.c (__fesetexceptflag): Fix correct
value to set as new flag.
[BZ #16576] [BZ #16576]
* sysdeps/powerpc/fpu/math_private.h [__CPU_HAS_FSQRT]: Remove define * sysdeps/powerpc/fpu/math_private.h [__CPU_HAS_FSQRT]: Remove define
and use _ARCH_PPCSQ instead. and use _ARCH_PPCSQ instead.

2
NEWS
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@ -18,7 +18,7 @@ Version 2.21
17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719, 17722, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719, 17722,
17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747, 17748, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747, 17748,
17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797, 17803, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797, 17803,
17806, 17834, 17844, 17848, 17868, 17869, 17870 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885
* A new semaphore algorithm has been implemented in generic C code for all * A new semaphore algorithm has been implemented in generic C code for all
machines. Previous custom assembly implementations of semaphore were machines. Previous custom assembly implementations of semaphore were

2
sysdeps/powerpc/fpu/fsetexcptflg.c
View File

@ -40,7 +40,7 @@ __fesetexceptflag (const fexcept_t *flagp, int excepts)
This may cause floating-point exceptions if the restored state This may cause floating-point exceptions if the restored state
requests it. */ requests it. */
if (n.l != u.l) if (n.l != u.l)
fesetenv_register (u.fenv); fesetenv_register (n.fenv);
/* Deal with FE_INVALID_SOFTWARE not being implemented on some chips. */ /* Deal with FE_INVALID_SOFTWARE not being implemented on some chips. */
if (flag & FE_INVALID) if (flag & FE_INVALID)