target/sh4: Create superh_io_recompile_replay_branch

Move the code from accel/tcg/translate-all.c to target/sh4/cpu.c.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210208233906.479571-5-richard.henderson@linaro.org>
Message-Id: <20210213130325.14781-14-alex.bennee@linaro.org>

accel/tcg/translate-all.c

@@ -2418,9 +2418,6 @@ void tb_check_watchpoint(CPUState *cpu, uintptr_t retaddr)
  */
 void cpu_io_recompile(CPUState *cpu, uintptr_t retaddr)
 {
-#if defined(TARGET_SH4)
-    CPUArchState *env = cpu->env_ptr;
-#endif
     TranslationBlock *tb;
     CPUClass *cc;
     uint32_t n;
@@ -2444,15 +2441,6 @@ void cpu_io_recompile(CPUState *cpu, uintptr_t retaddr)
         cpu_neg(cpu)->icount_decr.u16.low++;
         n = 2;
     }
-#if defined(TARGET_SH4)
-    if ((env->flags & ((DELAY_SLOT | DELAY_SLOT_CONDITIONAL))) != 0
-        && env->pc != tb->pc) {
-        env->pc -= 2;
-        cpu_neg(cpu)->icount_decr.u16.low++;
-        env->flags &= ~(DELAY_SLOT | DELAY_SLOT_CONDITIONAL);
-        n = 2;
-    }
-#endif
 
     /* Generate a new TB executing the I/O insn.  */
     cpu->cflags_next_tb = curr_cflags() | CF_LAST_IO | n;

target/sh4/cpu.c

@@ -43,6 +43,23 @@ static void superh_cpu_synchronize_from_tb(CPUState *cs,
     cpu->env.flags = tb->flags & TB_FLAG_ENVFLAGS_MASK;
 }
 
+#ifndef CONFIG_USER_ONLY
+static bool superh_io_recompile_replay_branch(CPUState *cs,
+                                              const TranslationBlock *tb)
+{
+    SuperHCPU *cpu = SUPERH_CPU(cs);
+    CPUSH4State *env = &cpu->env;
+
+    if ((env->flags & ((DELAY_SLOT | DELAY_SLOT_CONDITIONAL))) != 0
+        && env->pc != tb->pc) {
+        env->pc -= 2;
+        env->flags &= ~(DELAY_SLOT | DELAY_SLOT_CONDITIONAL);
+        return true;
+    }
+    return false;
+}
+#endif
+
 static bool superh_cpu_has_work(CPUState *cs)
 {
     return cs->interrupt_request & CPU_INTERRUPT_HARD;
@@ -217,6 +234,7 @@ static struct TCGCPUOps superh_tcg_ops = {
 #ifndef CONFIG_USER_ONLY
     .do_interrupt = superh_cpu_do_interrupt,
     .do_unaligned_access = superh_cpu_do_unaligned_access,
+    .io_recompile_replay_branch = superh_io_recompile_replay_branch,
 #endif /* !CONFIG_USER_ONLY */
 };