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authorCarmelo AMOROSO <carmelo.amoroso@st.com>2008-10-15 16:48:16 +0100
committerPaul Mundt <lethal@linux-sh.org>2009-01-29 11:56:02 +0900
commit0f6dee232f84c11ec195721571763ccae1b82639 (patch)
tree8047c67cb532d3735e61ae915cf5a6e366d6855d
parent48865163109690ed988e2d98d6f258ec743c94c7 (diff)
sh: fcnvds fix with denormalized numbers on SH-4 FPU.
This fixes a bug in the FPU exception handler for the FCNVDS instruction. To get the register number the instruction is shifted right by 9, though it should be shifted right by 8. More information at ST Linux bugzilla: https://bugzilla.stlinux.com/show_bug.cgi?id=4892 Signed-off-by: Giuseppe Di Giore <giuseppe.di-giore@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
-rw-r--r--arch/sh/kernel/cpu/sh4/fpu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sh/kernel/cpu/sh4/fpu.c b/arch/sh/kernel/cpu/sh4/fpu.c
index 2780917c008..e3ea5411da6 100644
--- a/arch/sh/kernel/cpu/sh4/fpu.c
+++ b/arch/sh/kernel/cpu/sh4/fpu.c
@@ -423,7 +423,7 @@ static int ieee_fpe_handler(struct pt_regs *regs)
int m;
unsigned int hx;
- m = (finsn >> 9) & 0x7;
+ m = (finsn >> 8) & 0x7;
hx = tsk->thread.fpu.hard.fp_regs[m];
if ((tsk->thread.fpu.hard.fpscr & FPSCR_CAUSE_ERROR)