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[Qemu-ppc] [PATCH v2] FU exceptions should carry a cause (IC)

From: Balbir Singh
Subject: [Qemu-ppc] [PATCH v2] FU exceptions should carry a cause (IC)
Date: Thu, 10 Nov 2016 15:37:31 +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 and executing a tabort r9 in libc
for example 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. The fix applies only to 64
bit ppc targets.

Signed-off-by: Balbir singh <address@hidden>
 Changelog v2:
   Make the code 64 bit specific

 target-ppc/excp_helper.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/target-ppc/excp_helper.c b/target-ppc/excp_helper.c
index 808760b..93369d4 100644
--- a/target-ppc/excp_helper.c
+++ b/target-ppc/excp_helper.c
@@ -427,6 +427,9 @@ 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          */
+#ifdef TARGET_PPC64
+        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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