Re: [Qemu-devel] sh : performance problem

[Lionel Landwerlin]

You might want this patch too


-- 
Lionel Landwerlin <address@hidden>

[PATCH] SH4: Fixed last UTLB unused and URB/URC management

Signed-off-by: Lionel Landwerlin <address@hidden>
---
 target-sh4/helper.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/target-sh4/helper.c b/target-sh4/helper.c
index cd0f392..54a3f1f 100644
--- a/target-sh4/helper.c
+++ b/target-sh4/helper.c
@@ -297,7 +297,7 @@ static int same_tlb_entry_exists(const tlb_t *
haystack, uint8_t nbtlb,
     return 0;
 }
 
-static void increment_urc(CPUState * env)
+static inline void increment_urc(CPUState * env)
 {
     uint8_t urb, urc;
 
@@ -305,7 +305,7 @@ static void increment_urc(CPUState * env)
     urb = ((env->mmucr) >> 18) & 0x3f;
     urc = ((env->mmucr) >> 10) & 0x3f;
     urc++;
-    if (urc == urb || urc == UTLB_SIZE - 1)
+    if ((urb > 0 && urc > urb) || urc > (UTLB_SIZE - 1))
        urc = 0;
     env->mmucr = (env->mmucr & 0xffff03ff) | (urc << 10);
 }
-- 
1.5.6.5