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[PULL,13/19] FU exceptions should carry a cause (IC)

Message ID 1479178144-28153-14-git-send-email-david@gibson.dropbear.id.au
State New
Headers show

Commit Message

David Gibson Nov. 15, 2016, 2:48 a.m. UTC 
From: Balbir Singh <bsingharora@gmail.com>

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 <bsingharora@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 target-ppc/excp_helper.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

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);
+#endif
         break;
     case POWERPC_EXCP_PIT:       /* Programmable interval timer interrupt    */
         LOG_EXCP("PIT exception\n");