softmmu: start introducing SOFTMMU_CODE_ACCESS in softmmu_header.h

This preprocessor symbol is already used in softmmu_template.h.  We
will use it to distinguish the two "fake" ACCESS_TYPEs
NB_MMU_MODES and NB_MMU_MODES + 1.
Reviewed-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

include/exec/exec-all.h

@@ -351,6 +351,7 @@ uint64_t helper_ldq_cmmu(CPUArchState *env, target_ulong addr, int mmu_idx);
 
 #define ACCESS_TYPE (NB_MMU_MODES + 1)
 #define MEMSUFFIX _code
+#define SOFTMMU_CODE_ACCESS
 
 #define DATA_SIZE 1
 #include "exec/softmmu_header.h"
@@ -366,6 +367,7 @@ uint64_t helper_ldq_cmmu(CPUArchState *env, target_ulong addr, int mmu_idx);
 
 #undef ACCESS_TYPE
 #undef MEMSUFFIX
+#undef SOFTMMU_CODE_ACCESS
 
 #endif
 

include/exec/softmmu_header.h

@@ -72,7 +72,7 @@
 #define RES_TYPE uint32_t
 #endif
 
-#if ACCESS_TYPE == (NB_MMU_MODES + 1)
+#ifdef SOFTMMU_CODE_ACCESS
 #define ADDR_READ addr_code
 #else
 #define ADDR_READ addr_read
@@ -124,7 +124,7 @@ glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
 }
 #endif
 
-#if ACCESS_TYPE != (NB_MMU_MODES + 1)
+#ifndef SOFTMMU_CODE_ACCESS
 
 /* generic store macro */
 
@@ -148,9 +148,7 @@ glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr,
     }
 }
 
-#endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
 
-#if ACCESS_TYPE != (NB_MMU_MODES + 1)
 
 #if DATA_SIZE == 8
 static inline float64 glue(cpu_ldfq, MEMSUFFIX)(CPUArchState *env,
@@ -200,7 +198,7 @@ static inline void glue(cpu_stfl, MEMSUFFIX)(CPUArchState *env,
 }
 #endif /* DATA_SIZE == 4 */
 
-#endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
+#endif /* !SOFTMMU_CODE_ACCESS */
 
 #undef RES_TYPE
 #undef DATA_TYPE