diff --git a/target/ppc/cpu-qom.h b/target/ppc/cpu-qom.h
index 5d591ff6c5ee..3880fb33376d 100644
--- a/target/ppc/cpu-qom.h
+++ b/target/ppc/cpu-qom.h
@@ -88,12 +88,8 @@ enum powerpc_excp_t {
     POWERPC_EXCP_STD,
     /* PowerPC 40x exception model      */
     POWERPC_EXCP_40x,
-    /* PowerPC 603 exception model      */
-    POWERPC_EXCP_603,
-    /* PowerPC G2 exception model       */
-    POWERPC_EXCP_G2,
-    /* PowerPC 604 exception model      */
-    POWERPC_EXCP_604,
+    /* PowerPC 603/604/G2 exception model */
+    POWERPC_EXCP_6xx,
     /* PowerPC 7x0 exception model      */
     POWERPC_EXCP_7x0,
     /* PowerPC 7x5 exception model      */
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index a5e1f5a3b204..95c5831ba651 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -2782,7 +2782,7 @@ POWERPC_FAMILY(MPC5xx)(ObjectClass *oc, void *data)
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
     pcc->mmu_model = POWERPC_MMU_REAL;
-    pcc->excp_model = POWERPC_EXCP_603;
+    pcc->excp_model = POWERPC_EXCP_6xx;
     pcc->bus_model = PPC_FLAGS_INPUT_RCPU;
     pcc->bfd_mach = bfd_mach_ppc_505;
     pcc->flags = POWERPC_FLAG_SE | POWERPC_FLAG_BE |
@@ -2825,7 +2825,7 @@ POWERPC_FAMILY(MPC8xx)(ObjectClass *oc, void *data)
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
     pcc->mmu_model = POWERPC_MMU_MPC8xx;
-    pcc->excp_model = POWERPC_EXCP_603;
+    pcc->excp_model = POWERPC_EXCP_6xx;
     pcc->bus_model = PPC_FLAGS_INPUT_RCPU;
     pcc->bfd_mach = bfd_mach_ppc_860;
     pcc->flags = POWERPC_FLAG_SE | POWERPC_FLAG_BE |
@@ -2906,7 +2906,7 @@ POWERPC_FAMILY(G2)(ObjectClass *oc, void *data)
                     (1ull << MSR_DR) |
                     (1ull << MSR_RI);
     pcc->mmu_model = POWERPC_MMU_SOFT_6xx;
-    pcc->excp_model = POWERPC_EXCP_G2;
+    pcc->excp_model = POWERPC_EXCP_6xx;
     pcc->bus_model = PPC_FLAGS_INPUT_6xx;
     pcc->bfd_mach = bfd_mach_ppc_ec603e;
     pcc->flags = POWERPC_FLAG_TGPR | POWERPC_FLAG_SE |
@@ -2988,7 +2988,7 @@ POWERPC_FAMILY(G2LE)(ObjectClass *oc, void *data)
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
     pcc->mmu_model = POWERPC_MMU_SOFT_6xx;
-    pcc->excp_model = POWERPC_EXCP_G2;
+    pcc->excp_model = POWERPC_EXCP_6xx;
     pcc->bus_model = PPC_FLAGS_INPUT_6xx;
     pcc->bfd_mach = bfd_mach_ppc_ec603e;
     pcc->flags = POWERPC_FLAG_TGPR | POWERPC_FLAG_SE |
@@ -3243,7 +3243,7 @@ POWERPC_FAMILY(e300)(ObjectClass *oc, void *data)
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
     pcc->mmu_model = POWERPC_MMU_SOFT_6xx;
-    pcc->excp_model = POWERPC_EXCP_603;
+    pcc->excp_model = POWERPC_EXCP_6xx;
     pcc->bus_model = PPC_FLAGS_INPUT_6xx;
     pcc->bfd_mach = bfd_mach_ppc_603;
     pcc->flags = POWERPC_FLAG_TGPR | POWERPC_FLAG_SE |
@@ -3772,7 +3772,7 @@ POWERPC_FAMILY(603)(ObjectClass *oc, void *data)
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
     pcc->mmu_model = POWERPC_MMU_SOFT_6xx;
-    pcc->excp_model = POWERPC_EXCP_603;
+    pcc->excp_model = POWERPC_EXCP_6xx;
     pcc->bus_model = PPC_FLAGS_INPUT_6xx;
     pcc->bfd_mach = bfd_mach_ppc_603;
     pcc->flags = POWERPC_FLAG_TGPR | POWERPC_FLAG_SE |
@@ -3811,7 +3811,7 @@ POWERPC_FAMILY(603E)(ObjectClass *oc, void *data)
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
     pcc->mmu_model = POWERPC_MMU_SOFT_6xx;
-    pcc->excp_model = POWERPC_EXCP_603;
+    pcc->excp_model = POWERPC_EXCP_6xx;
     pcc->bus_model = PPC_FLAGS_INPUT_6xx;
     pcc->bfd_mach = bfd_mach_ppc_ec603e;
     pcc->flags = POWERPC_FLAG_TGPR | POWERPC_FLAG_SE |
@@ -3872,7 +3872,7 @@ POWERPC_FAMILY(604)(ObjectClass *oc, void *data)
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
     pcc->mmu_model = POWERPC_MMU_32B;
-    pcc->excp_model = POWERPC_EXCP_604;
+    pcc->excp_model = POWERPC_EXCP_6xx;
     pcc->bus_model = PPC_FLAGS_INPUT_6xx;
     pcc->bfd_mach = bfd_mach_ppc_604;
     pcc->flags = POWERPC_FLAG_SE | POWERPC_FLAG_BE |
@@ -3953,7 +3953,7 @@ POWERPC_FAMILY(604E)(ObjectClass *oc, void *data)
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
     pcc->mmu_model = POWERPC_MMU_32B;
-    pcc->excp_model = POWERPC_EXCP_604;
+    pcc->excp_model = POWERPC_EXCP_6xx;
     pcc->bus_model = PPC_FLAGS_INPUT_6xx;
     pcc->bfd_mach = bfd_mach_ppc_604;
     pcc->flags = POWERPC_FLAG_SE | POWERPC_FLAG_BE |
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index ae6871a3c0f3..935f547f25f8 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -1357,7 +1357,7 @@ static inline void powerpc_excp_legacy(PowerPCCPU *cpu, int excp)
             srr0 = SPR_BOOKE_CSRR0;
             srr1 = SPR_BOOKE_CSRR1;
             break;
-        case POWERPC_EXCP_G2:
+        case POWERPC_EXCP_6xx:
             break;
         default:
             goto excp_invalid;
@@ -1645,8 +1645,7 @@ static inline void powerpc_excp_legacy(PowerPCCPU *cpu, int excp)
     case POWERPC_EXCP_DLTLB:     /* Data load TLB miss                       */
     case POWERPC_EXCP_DSTLB:     /* Data store TLB miss                      */
         switch (excp_model) {
-        case POWERPC_EXCP_603:
-        case POWERPC_EXCP_G2:
+        case POWERPC_EXCP_6xx:
             /* Swap temporary saved registers with GPRs */
             if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
                 new_msr |= (target_ulong)1 << MSR_TGPR;
