Add ppc_real_mode_xlate() to handle real mode translation and allow
removing this case from ppc_jumbo_xlate().
Signed-off-by: BALATON Zoltan <bala...@eik.bme.hu>
---
target/ppc/mmu_common.c | 46 ++++++++++++++++++++++++-----------------
1 file changed, 27 insertions(+), 19 deletions(-)
diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c
index 8599106f75..ab912da821 100644
--- a/target/ppc/mmu_common.c
+++ b/target/ppc/mmu_common.c
@@ -1117,23 +1117,12 @@ int get_physical_address_wtlb(CPUPPCState *env,
mmu_ctx_t *ctx,
MMUAccessType access_type, int type,
int mmu_idx)
{
- bool real_mode = (type == ACCESS_CODE) ? !FIELD_EX64(env->msr, MSR, IR)
- : !FIELD_EX64(env->msr, MSR, DR);
- if (real_mode) {
- ctx->raddr = eaddr;
- ctx->prot = PAGE_RWX;
- return 0;
- }
-
switch (env->mmu_model) {
case POWERPC_MMU_SOFT_6xx:
return mmu6xx_get_physical_address(env, ctx, eaddr, access_type, type);
case POWERPC_MMU_SOFT_4xx:
return mmu40x_get_physical_address(env, &ctx->raddr, &ctx->prot, eaddr,
access_type);
- case POWERPC_MMU_REAL:
- cpu_abort(env_cpu(env),
- "PowerPC in real mode do not do any translation\n");
default:
cpu_abort(env_cpu(env), "Unknown or invalid MMU model\n");
}
@@ -1251,6 +1240,24 @@ static bool ppc_booke_xlate(PowerPCCPU *cpu, vaddr eaddr,
return false;
}
+static bool ppc_real_mode_xlate(PowerPCCPU *cpu, vaddr eaddr,
+ MMUAccessType access_type,
+ hwaddr *raddrp, int *psizep, int *protp)
+{
+ CPUPPCState *env = &cpu->env;
+
+ if (access_type == MMU_INST_FETCH ? !FIELD_EX64(env->msr, MSR, IR)
+ : !FIELD_EX64(env->msr, MSR, DR)) {
+ *raddrp = eaddr;
+ *protp = PAGE_RWX;
+ *psizep = TARGET_PAGE_BITS;
+ return true;
+ } else if (env->mmu_model == POWERPC_MMU_REAL) {
+ cpu_abort(CPU(cpu), "PowerPC in real mode shold not do translation\n");
+ }
+ return false;
+}
+
/* Perform address translation */
/* TODO: Split this by mmu_model. */
static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
@@ -1264,6 +1271,10 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
int type;
int ret;
+ if (ppc_real_mode_xlate(cpu, eaddr, access_type, raddrp, psizep, protp)) {
+ return true;
+ }
+
if (access_type == MMU_INST_FETCH) {
/* code access */
type = ACCESS_CODE;
@@ -1303,11 +1314,8 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
env->spr[SPR_40x_DEAR] = eaddr;
env->spr[SPR_40x_ESR] = 0x00000000;
break;
- case POWERPC_MMU_REAL:
- cpu_abort(cs, "PowerPC in real mode should never raise "
- "any MMU exceptions\n");
default:
- cpu_abort(cs, "Unknown or invalid MMU model\n");
+ g_assert_not_reached();
}
break;
case -2:
@@ -1359,11 +1367,8 @@ static bool ppc_jumbo_xlate(PowerPCCPU *cpu, vaddr eaddr,
env->spr[SPR_40x_ESR] = 0x00000000;
}
break;
- case POWERPC_MMU_REAL:
- cpu_abort(cs, "PowerPC in real mode should never raise "
- "any MMU exceptions\n");
default:
- cpu_abort(cs, "Unknown or invalid MMU model\n");
+ g_assert_not_reached();
}
break;
case -2:
@@ -1457,6 +1462,9 @@ bool ppc_xlate(PowerPCCPU *cpu, vaddr eaddr,
MMUAccessType access_type,
case POWERPC_MMU_BOOKE206:
return ppc_booke_xlate(cpu, eaddr, access_type, raddrp,
psizep, protp, mmu_idx, guest_visible);
+ case POWERPC_MMU_REAL:
+ return ppc_real_mode_xlate(cpu, eaddr, access_type, raddrp, psizep,
+ protp);
case POWERPC_MMU_MPC8xx:
cpu_abort(env_cpu(&cpu->env), "MPC8xx MMU model is not implemented\n");
default:
--
2.30.9
