From b8031adba791325907d8a9e19af8d483996974fd Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Tue, 17 Dec 2013 14:22:08 +0100 Subject: s390x/kvm: Simplified the calculation of the SIGP order code We've already got a helper function for calculating the base/displacement of RS formatted instructions, so we can get rid of the manual calculation of the SIGP order code. Signed-off-by: Thomas Huth Reviewed-by: Cornelia Huck Signed-off-by: Jens Freimann Signed-off-by: Alexander Graf --- target-s390x/kvm.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'target-s390x') diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index fcc159f72e..0bf3d1f49e 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -626,6 +626,8 @@ static int s390_cpu_initial_reset(S390CPU *cpu) return 0; } +#define SIGP_ORDER_MASK 0x000000ff + static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) { CPUS390XState *env = &cpu->env; @@ -637,11 +639,7 @@ static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) cpu_synchronize_state(CPU(cpu)); /* get order code */ - order_code = run->s390_sieic.ipb >> 28; - if (order_code > 0) { - order_code = env->regs[order_code]; - } - order_code += (run->s390_sieic.ipb & 0x0fff0000) >> 16; + order_code = decode_basedisp_rs(env, run->s390_sieic.ipb) & SIGP_ORDER_MASK; cpu_addr = env->regs[ipa1 & 0x0f]; target_cpu = s390_cpu_addr2state(cpu_addr); -- cgit v1.2.1