target/ppc: Set fault address in ppc_cpu_do_unaligned_access

We ought to have been recording the virtual address for reporting
to the guest trap handler.

Cc: qemu-ppc@nongnu.org
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 88a8de4..e568a54 100644 (file)
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -1465,6 +1465,20 @@ void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
 {
     CPUPPCState *env = cs->env_ptr;
 
+    switch (env->mmu_model) {
+    case POWERPC_MMU_SOFT_4xx:
+    case POWERPC_MMU_SOFT_4xx_Z:
+        env->spr[SPR_40x_DEAR] = vaddr;
+        break;
+    case POWERPC_MMU_BOOKE:
+    case POWERPC_MMU_BOOKE206:
+        env->spr[SPR_BOOKE_DEAR] = vaddr;
+        break;
+    default:
+        env->spr[SPR_DAR] = vaddr;
+        break;
+    }
+
     cs->exception_index = POWERPC_EXCP_ALIGN;
     env->error_code = 0;
     cpu_loop_exit_restore(cs, retaddr);