The architecture specifies that any instruction that sets MSR:PR will also
set MSR:EE, IR and DR.
Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
---
target-ppc/helper_regs.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/target-ppc/helper_regs.h b/target-ppc/helper_regs.h
index 12af61c..09bc450 100644
--- a/target-ppc/helper_regs.h
+++ b/target-ppc/helper_regs.h
@@ -136,6 +136,10 @@ static inline int hreg_store_msr(CPUPPCState *env,
target_ulong value,
/* Change the exception prefix on PowerPC 601 */
env->excp_prefix = ((value >> MSR_EP) & 1) * 0xFFF00000;
}
+ /* If PR=1 then EE, IR and DR must be 1 */
+ if ((value >> MSR_PR) & 1) {
+ value |= (1 << MSR_EE) | (1 << MSR_DR) | (1 << MSR_IR);
+ }
#endif
env->msr = value;
hreg_compute_hflags(env);
--
2.5.0
