From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: alex.bennee@linaro.org
Subject: [PATCH 4/7] target/alpha: Handle SWCR_MAP_DMZ earlier
Date: Fri, 20 Sep 2019 21:32:53 -0700 [thread overview]
Message-ID: <20190921043256.4575-5-richard.henderson@linaro.org> (raw)
In-Reply-To: <20190921043256.4575-1-richard.henderson@linaro.org>
Since we're converting the swcr to fpcr format for exceptions,
it's trivial to add FPCR_DNZ to the set of fpcr bits overriden.
No functional change.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/alpha/helper.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/target/alpha/helper.c b/target/alpha/helper.c
index e21c488aa3..2f959c65ef 100644
--- a/target/alpha/helper.c
+++ b/target/alpha/helper.c
@@ -57,7 +57,7 @@ void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val)
* the software exception mask.
*/
uint32_t soft_fpcr = alpha_ieee_swcr_to_fpcr(env->swcr) >> 32;
- fpcr |= soft_fpcr & FPCR_STATUS_MASK;
+ fpcr |= soft_fpcr & (FPCR_STATUS_MASK | FPCR_DNZ);
#endif
t |= CONVERT_BIT(fpcr, FPCR_INED, FPCR_INE);
@@ -73,9 +73,6 @@ void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val)
env->fpcr_flush_to_zero = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);
env->fp_status.flush_inputs_to_zero = (fpcr & FPCR_DNZ) != 0;
#ifdef CONFIG_USER_ONLY
- if (env->swcr & SWCR_MAP_DMZ) {
- env->fp_status.flush_inputs_to_zero = 1;
- }
if (env->swcr & SWCR_MAP_UMZ) {
env->fpcr_flush_to_zero = 1;
}
--
2.17.1
next prev parent reply other threads:[~2019-09-21 4:39 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-21 4:32 [PATCH 0/7] target/alpha: Fix linux-user exception for CVTTQ Richard Henderson
2019-09-21 4:32 ` [PATCH 1/7] target/alpha: Use array for FPCR_DYN conversion Richard Henderson
2019-09-21 8:53 ` Philippe Mathieu-Daudé
2019-09-23 16:23 ` Alex Bennée
2019-09-21 4:32 ` [PATCH 2/7] target/alpha: Fix SWCR_MAP_UMZ Richard Henderson
2019-09-23 16:33 ` Alex Bennée
2019-09-21 4:32 ` [PATCH 3/7] target/alpha: Fix SWCR_TRAP_ENABLE_MASK Richard Henderson
2019-09-21 4:32 ` Richard Henderson [this message]
2019-09-21 4:32 ` [PATCH 5/7] target/alpha: Write to fpcr_flush_to_zero once Richard Henderson
2019-09-21 8:54 ` Philippe Mathieu-Daudé
2019-09-23 16:38 ` Alex Bennée
2019-09-21 4:32 ` [PATCH 6/7] target/alpha: Mask IOV exception with INV for user-only Richard Henderson
2019-09-23 16:39 ` Alex Bennée
2019-09-21 4:32 ` [PATCH 7/7] target/alpha: Tidy helper_fp_exc_raise_s Richard Henderson
2019-09-21 8:57 ` Philippe Mathieu-Daudé
2019-09-23 16:40 ` Alex Bennée
2019-09-23 16:44 ` [PATCH 0/7] target/alpha: Fix linux-user exception for CVTTQ Alex Bennée
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