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[Qemu-ppc] [TRIVIAL][RFC][PATCH] FU exceptions should carry a cause (IC)

From: Balbir Singh
Subject: [Qemu-ppc] [TRIVIAL][RFC][PATCH] FU exceptions should carry a cause (IC)
Date: Thu, 10 Nov 2016 12:42:37 +1100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0

As per the ISA we need a cause for FU exceptions.Executing a tabort r9
for example in libc, causes a EXCP_FU exception. We don't wire up the
IC (cause) when we post the exception. The cause is required
for the kernel to do the right thing. I caught this issue while testing
the latest kernel against Cedrics' latest pnv ipmi branch.

Signed-off-by: Balbir singh <address@hidden>
 target-ppc/excp_helper.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target-ppc/excp_helper.c b/target-ppc/excp_helper.c
index 808760b..cccea8d 100644
--- a/target-ppc/excp_helper.c
+++ b/target-ppc/excp_helper.c
@@ -427,6 +427,7 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int 
excp_model, int excp)
     case POWERPC_EXCP_VPU:       /* Vector unavailable exception             */
     case POWERPC_EXCP_VSXU:       /* VSX unavailable exception               */
     case POWERPC_EXCP_FU:         /* Facility unavailable exception          */
+        env->spr[SPR_FSCR] |= ((target_ulong)env->error_code << 56);
     case POWERPC_EXCP_PIT:       /* Programmable interval timer interrupt    */
         LOG_EXCP("PIT exception\n");

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