target/sh4: Unify code for CHECK_NOT_DELAY_SLOT

We do not need to emit N copies of raising an exception.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170718200255.31647-19-rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

diff --git a/target/sh4/translate.c b/target/sh4/translate.c
index 792a46804bb723a18e407ea1c2ca49849e39a568..acd756e18a6129c81c93547c975befca4af737b8 100644 (file)
--- a/target/sh4/translate.c
+++ b/target/sh4/translate.c
@@ -365,11 +365,8 @@ static inline void gen_store_fpr64(DisasContext *ctx, TCGv_i64 t, int reg)
 #define XHACK(x) ((((x) & 1 ) << 4) | ((x) & 0xe))
 
 #define CHECK_NOT_DELAY_SLOT \
-    if (ctx->envflags & DELAY_SLOT_MASK) {                           \
-        gen_save_cpu_state(ctx, true);                               \
-        gen_helper_raise_slot_illegal_instruction(cpu_env);          \
-        ctx->bstate = BS_EXCP;                                       \
-        return;                                                      \
+    if (ctx->envflags & DELAY_SLOT_MASK) {  \
+        goto do_illegal_slot;               \
     }
 
 #define CHECK_PRIVILEGED                                             \
@@ -1796,10 +1793,12 @@ static void _decode_opc(DisasContext * ctx)
            ctx->opcode, ctx->pc);
     fflush(stderr);
 #endif
-    gen_save_cpu_state(ctx, true);
     if (ctx->envflags & DELAY_SLOT_MASK) {
+ do_illegal_slot:
+        gen_save_cpu_state(ctx, true);
         gen_helper_raise_slot_illegal_instruction(cpu_env);
     } else {
+        gen_save_cpu_state(ctx, true);
         gen_helper_raise_illegal_instruction(cpu_env);
     }
     ctx->bstate = BS_EXCP;