diff mbox series

[5/7] target/alpha: Write to fpcr_flush_to_zero once

Message ID 20190921043256.4575-6-richard.henderson@linaro.org
State Superseded
Headers show
Series target/alpha: Fix linux-user exception for CVTTQ | expand

Commit Message

Richard Henderson Sept. 21, 2019, 4:32 a.m. UTC
Tidy the computation of the value; no functional change.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 target/alpha/helper.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

-- 
2.17.1

Comments

Philippe Mathieu-Daudé Sept. 21, 2019, 8:54 a.m. UTC | #1
On 9/21/19 6:32 AM, Richard Henderson wrote:
> Tidy the computation of the value; no functional change.

> 

> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>


Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>


> ---

>  target/alpha/helper.c | 9 ++++-----

>  1 file changed, 4 insertions(+), 5 deletions(-)

> 

> diff --git a/target/alpha/helper.c b/target/alpha/helper.c

> index 2f959c65ef..1b3479738b 100644

> --- a/target/alpha/helper.c

> +++ b/target/alpha/helper.c

> @@ -69,14 +69,13 @@ void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val)

>      env->fpcr_exc_enable = ~t & FPCR_STATUS_MASK;

>  

>      env->fpcr_dyn_round = rm_map[(fpcr & FPCR_DYN_MASK) >> FPCR_DYN_SHIFT];

> -

> -    env->fpcr_flush_to_zero = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);

>      env->fp_status.flush_inputs_to_zero = (fpcr & FPCR_DNZ) != 0;

> +

> +    t = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);

>  #ifdef CONFIG_USER_ONLY

> -    if (env->swcr & SWCR_MAP_UMZ) {

> -        env->fpcr_flush_to_zero = 1;

> -    }

> +    t |= (env->swcr & SWCR_MAP_UMZ) != 0;

>  #endif

> +    env->fpcr_flush_to_zero = t;

>  }

>  

>  uint64_t helper_load_fpcr(CPUAlphaState *env)

>
Alex Bennée Sept. 23, 2019, 4:38 p.m. UTC | #2
Richard Henderson <richard.henderson@linaro.org> writes:

> Tidy the computation of the value; no functional change.

>

> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>


Reviewed-by: Alex Bennée <alex.bennee@linaro.org>


> ---

>  target/alpha/helper.c | 9 ++++-----

>  1 file changed, 4 insertions(+), 5 deletions(-)

>

> diff --git a/target/alpha/helper.c b/target/alpha/helper.c

> index 2f959c65ef..1b3479738b 100644

> --- a/target/alpha/helper.c

> +++ b/target/alpha/helper.c

> @@ -69,14 +69,13 @@ void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val)

>      env->fpcr_exc_enable = ~t & FPCR_STATUS_MASK;

>

>      env->fpcr_dyn_round = rm_map[(fpcr & FPCR_DYN_MASK) >> FPCR_DYN_SHIFT];

> -

> -    env->fpcr_flush_to_zero = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);

>      env->fp_status.flush_inputs_to_zero = (fpcr & FPCR_DNZ) != 0;

> +

> +    t = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);

>  #ifdef CONFIG_USER_ONLY

> -    if (env->swcr & SWCR_MAP_UMZ) {

> -        env->fpcr_flush_to_zero = 1;

> -    }

> +    t |= (env->swcr & SWCR_MAP_UMZ) != 0;

>  #endif

> +    env->fpcr_flush_to_zero = t;

>  }

>

>  uint64_t helper_load_fpcr(CPUAlphaState *env)



--
Alex Bennée
diff mbox series

Patch

diff --git a/target/alpha/helper.c b/target/alpha/helper.c
index 2f959c65ef..1b3479738b 100644
--- a/target/alpha/helper.c
+++ b/target/alpha/helper.c
@@ -69,14 +69,13 @@  void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val)
     env->fpcr_exc_enable = ~t & FPCR_STATUS_MASK;
 
     env->fpcr_dyn_round = rm_map[(fpcr & FPCR_DYN_MASK) >> FPCR_DYN_SHIFT];
-
-    env->fpcr_flush_to_zero = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);
     env->fp_status.flush_inputs_to_zero = (fpcr & FPCR_DNZ) != 0;
+
+    t = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);
 #ifdef CONFIG_USER_ONLY
-    if (env->swcr & SWCR_MAP_UMZ) {
-        env->fpcr_flush_to_zero = 1;
-    }
+    t |= (env->swcr & SWCR_MAP_UMZ) != 0;
 #endif
+    env->fpcr_flush_to_zero = t;
 }
 
 uint64_t helper_load_fpcr(CPUAlphaState *env)