target: [tcg] Use a generic enum for DISAS_ values

Used later. An enum makes expected values explicit and
bounds the value space of switches.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-Id: <150002049746.22386.2316077281615710615.stgit@frigg.lan>
Signed-off-by: Richard Henderson <rth@twiddle.net>

1 files changed, 14 insertions, 9 deletions

diff --git a/target/arm/translate.h b/target/arm/translate.h
index 90f64d9716..1eb432dc2c 100644
--- a/target/arm/translate.h
+++ b/target/arm/translate.h
@@ -1,6 +1,9 @@
 #ifndef TARGET_ARM_TRANSLATE_H
 #define TARGET_ARM_TRANSLATE_H
 
+#include "exec/translator.h"
+
+
 /* internal defines */
 typedef struct DisasContext {
     target_ulong pc;
@@ -119,29 +122,31 @@ static void disas_set_insn_syndrome(DisasContext *s, uint32_t syn)
     s->insn_start_idx = 0;
 }
 
-/* target-specific extra values for is_jmp */
+/* is_jmp field values */
+#define DISAS_JUMP      DISAS_TARGET_0 /* only pc was modified dynamically */
+#define DISAS_UPDATE    DISAS_TARGET_1 /* cpu state was modified dynamically */
 /* These instructions trap after executing, so the A32/T32 decoder must
  * defer them until after the conditional execution state has been updated.
  * WFI also needs special handling when single-stepping.
  */
-#define DISAS_WFI 5
-#define DISAS_SWI 6
+#define DISAS_WFI       DISAS_TARGET_2
+#define DISAS_SWI       DISAS_TARGET_3
 /* WFE */
-#define DISAS_WFE 7
-#define DISAS_HVC 8
-#define DISAS_SMC 9
-#define DISAS_YIELD 10
+#define DISAS_WFE       DISAS_TARGET_4
+#define DISAS_HVC       DISAS_TARGET_5
+#define DISAS_SMC       DISAS_TARGET_6
+#define DISAS_YIELD     DISAS_TARGET_7
 /* M profile branch which might be an exception return (and so needs
  * custom end-of-TB code)
  */
-#define DISAS_BX_EXCRET 11
+#define DISAS_BX_EXCRET DISAS_TARGET_8
 /* For instructions which want an immediate exit to the main loop,
  * as opposed to attempting to use lookup_and_goto_ptr. Unlike
  * DISAS_UPDATE this doesn't write the PC on exiting the translation
  * loop so you need to ensure something (gen_a64_set_pc_im or runtime
  * helper) has done so before we reach return from cpu_tb_exec.
  */
-#define DISAS_EXIT 12
+#define DISAS_EXIT      DISAS_TARGET_9
 
 #ifdef TARGET_AARCH64
 void a64_translate_init(void);