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authorHelge Deller <deller@gmx.de>2010-05-03 20:44:21 +0000
committerKyle McMartin <kyle@dreadnought.i.jkkm.org>2010-05-30 05:39:58 -0400
commit550f0d922286556c7ea43974bb7921effb5a5278 (patch)
tree2fea27b82d293da2c2a9ce92c1f6185620470d44
parentd24944d924d051281b276be8e5749b45785563c8 (diff)
downloadlinux-550f0d922286556c7ea43974bb7921effb5a5278.tar.bz2
parisc: clear floating point exception flag on SIGFPE signal
Clear the floating point exception flag before returning to user space. This is needed, else the libc trampoline handler may hit the same SIGFPE again while building up a trampoline to a signal handler. Fixes debian bug #559406. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
-rw-r--r--arch/parisc/math-emu/decode_exc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/parisc/math-emu/decode_exc.c b/arch/parisc/math-emu/decode_exc.c
index 3ca1c6149218..27a7492ddb0d 100644
--- a/arch/parisc/math-emu/decode_exc.c
+++ b/arch/parisc/math-emu/decode_exc.c
@@ -342,6 +342,7 @@ decode_fpu(unsigned int Fpu_register[], unsigned int trap_counts[])
return SIGNALCODE(SIGFPE, FPE_FLTINV);
case DIVISIONBYZEROEXCEPTION:
update_trap_counts(Fpu_register, aflags, bflags, trap_counts);
+ Clear_excp_register(exception_index);
return SIGNALCODE(SIGFPE, FPE_FLTDIV);
case INEXACTEXCEPTION:
update_trap_counts(Fpu_register, aflags, bflags, trap_counts);