Commit b378bb09 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by David Gibson
Browse files

ppc: Enforce setting MSR:EE,IR and DR when MSR:PR is set 



The architecture specifies that any instruction that sets MSR:PR will also
set MSR:EE, IR and DR.

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarCédric Le Goater <clg@kaod.org>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent d1dbe37c

target-ppc/helper_regs.h

+4 −0
Original line number Diff line number Diff line
@@ -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);