[Qemu-ppc] [PULL 20/22] This patch fixes processing of rfi instructions in icount mode.

[David Gibson]

From: Maria Klimushenkova <address@hidden>

In this mode writing to interrupt/peripheral state is controlled
by can_do_io flag. This flag must be set explicitly before helper
function invocation.

Signed-off-by: Maria Klimushenkova <address@hidden>
Signed-off-by: Pavel Dovgalyuk <address@hidden>
Tested-by: Mark Cave-Ayland <address@hidden>
Signed-off-by: David Gibson <address@hidden>
---
 target/ppc/translate.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index fb18cedcf0..2b37910248 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -3919,9 +3919,15 @@ static void gen_rfi(DisasContext *ctx)
     }
     /* Restore CPU state */
     CHK_SV;
+    if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) {
+        gen_io_start();
+    }
     gen_update_cfar(ctx, ctx->base.pc_next - 4);
     gen_helper_rfi(cpu_env);
     gen_sync_exception(ctx);
+    if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) {
+        gen_io_end();
+    }
 #endif
 }
 
@@ -3933,9 +3939,15 @@ static void gen_rfid(DisasContext *ctx)
 #else
     /* Restore CPU state */
     CHK_SV;
+    if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) {
+        gen_io_start();
+    }
     gen_update_cfar(ctx, ctx->base.pc_next - 4);
     gen_helper_rfid(cpu_env);
     gen_sync_exception(ctx);
+    if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) {
+        gen_io_end();
+    }
 #endif
 }
 
-- 
2.19.1