diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index d855a275ca..e27e1c3c70 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -596,20 +596,6 @@ static void powerpc_excp_6xx(PowerPCCPU *cpu, int excp)
 
     switch (excp) {
     case POWERPC_EXCP_CRITICAL:    /* Critical input                         */
-        switch (excp_model) {
-        case POWERPC_EXCP_40x:
-            srr0 = SPR_40x_SRR2;
-            srr1 = SPR_40x_SRR3;
-            break;
-        case POWERPC_EXCP_BOOKE:
-            srr0 = SPR_BOOKE_CSRR0;
-            srr1 = SPR_BOOKE_CSRR1;
-            break;
-        case POWERPC_EXCP_6xx:
-            break;
-        default:
-            goto excp_invalid;
-        }
         break;
     case POWERPC_EXCP_MCHECK:    /* Machine check exception                  */
         if (msr_me == 0) {
@@ -836,7 +822,6 @@ static void powerpc_excp_6xx(PowerPCCPU *cpu, int excp)
                   powerpc_excp_name(excp));
         break;
     default:
-    excp_invalid:
         cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
         break;
     }