[PATCH v3 12/23] target/mips: Create mips_io_recompile_replay_branch

From: "Alex Bennée" <alex.bennee@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Aleksandar Rikalo" <aleksandar.rikalo@syrmia.com>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	robhenry@microsoft.com, mahmoudabdalghany@outlook.com,
	aaron@os.amperecomputing.com, cota@braap.org,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	kuhn.chenqun@huawei.com, "Alex Bennée" <alex.bennee@linaro.org>,
	"Aurelien Jarno" <aurelien@aurel32.net>
Subject: [PATCH v3 12/23] target/mips: Create mips_io_recompile_replay_branch
Date: Sat, 13 Feb 2021 13:03:14 +0000	[thread overview]
Message-ID: <20210213130325.14781-13-alex.bennee@linaro.org> (raw)
In-Reply-To: <20210213130325.14781-1-alex.bennee@linaro.org>

From: Richard Henderson <richard.henderson@linaro.org>

Move the code from accel/tcg/translate-all.c to target/mips/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: <20210208233906.479571-4-richard.henderson@linaro.org>
Message-Id: <20210209182749.31323-4-alex.bennee@linaro.org>
Message-Id: <20210210221053.18050-13-alex.bennee@linaro.org>
---
 accel/tcg/translate-all.c | 12 ++----------
 target/mips/cpu.c         | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index 6eb37883bd..470657b02a 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -2417,7 +2417,7 @@ void tb_check_watchpoint(CPUState *cpu, uintptr_t retaddr)
  */
 void cpu_io_recompile(CPUState *cpu, uintptr_t retaddr)
 {
-#if defined(TARGET_MIPS) || defined(TARGET_SH4)
+#if defined(TARGET_SH4)
     CPUArchState *env = cpu->env_ptr;
 #endif
     TranslationBlock *tb;
@@ -2443,15 +2443,7 @@ void cpu_io_recompile(CPUState *cpu, uintptr_t retaddr)
         cpu_neg(cpu)->icount_decr.u16.low++;
         n = 2;
     }
-#if defined(TARGET_MIPS)
-    if ((env->hflags & MIPS_HFLAG_BMASK) != 0
-        && env->active_tc.PC != tb->pc) {
-        env->active_tc.PC -= (env->hflags & MIPS_HFLAG_B16 ? 2 : 4);
-        cpu_neg(cpu)->icount_decr.u16.low++;
-        env->hflags &= ~MIPS_HFLAG_BMASK;
-        n = 2;
-    }
-#elif defined(TARGET_SH4)
+#if defined(TARGET_SH4)
     if ((env->flags & ((DELAY_SLOT | DELAY_SLOT_CONDITIONAL))) != 0
         && env->pc != tb->pc) {
         env->pc -= 2;
diff --git a/target/mips/cpu.c b/target/mips/cpu.c
index ad163ead62..bf70c77295 100644
--- a/target/mips/cpu.c
+++ b/target/mips/cpu.c
@@ -268,6 +268,23 @@ static void mips_cpu_synchronize_from_tb(CPUState *cs,
     env->hflags &= ~MIPS_HFLAG_BMASK;
     env->hflags |= tb->flags & MIPS_HFLAG_BMASK;
 }
+
+# ifndef CONFIG_USER_ONLY
+static bool mips_io_recompile_replay_branch(CPUState *cs,
+                                            const TranslationBlock *tb)
+{
+    MIPSCPU *cpu = MIPS_CPU(cs);
+    CPUMIPSState *env = &cpu->env;
+
+    if ((env->hflags & MIPS_HFLAG_BMASK) != 0
+        && env->active_tc.PC != tb->pc) {
+        env->active_tc.PC -= (env->hflags & MIPS_HFLAG_B16 ? 2 : 4);
+        env->hflags &= ~MIPS_HFLAG_BMASK;
+        return true;
+    }
+    return false;
+}
+# endif /* !CONFIG_USER_ONLY */
 #endif /* CONFIG_TCG */
 
 static bool mips_cpu_has_work(CPUState *cs)
@@ -679,6 +696,7 @@ static struct TCGCPUOps mips_tcg_ops = {
     .do_interrupt = mips_cpu_do_interrupt,
     .do_transaction_failed = mips_cpu_do_transaction_failed,
     .do_unaligned_access = mips_cpu_do_unaligned_access,
+    .io_recompile_replay_branch = mips_io_recompile_replay_branch,
 #endif /* !CONFIG_USER_ONLY */
 };
 #endif /* CONFIG_TCG */
-- 
2.20.1


