From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org
Subject: [PATCH v7 14/20] target/arm: Hoist store to cs_base in cpu_get_tb_cpu_state
Date: Thu, 17 Oct 2019 11:51:04 -0700 [thread overview]
Message-ID: <20191017185110.539-15-richard.henderson@linaro.org> (raw)
In-Reply-To: <20191017185110.539-1-richard.henderson@linaro.org>
By performing this store early, we avoid having to save and restore
the register holding the address around any function calls.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/arm/helper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 3f7d3f257d..37424e3d4d 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11225,6 +11225,7 @@ void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
{
uint32_t flags, pstate_for_ss;
+ *cs_base = 0;
flags = rebuild_hflags_internal(env);
if (is_a64(env)) {
@@ -11298,7 +11299,6 @@ void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
}
*pflags = flags;
- *cs_base = 0;
}
#ifdef TARGET_AARCH64
--
2.17.1
next prev parent reply other threads:[~2019-10-17 18:58 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-17 18:50 [PATCH v7 00/20] target/arm: Reduce overhead of cpu_get_tb_cpu_state Richard Henderson
2019-10-17 18:50 ` [PATCH v7 01/20] target/arm: Split out rebuild_hflags_common Richard Henderson
2019-10-17 18:50 ` [PATCH v7 02/20] target/arm: Split out rebuild_hflags_a64 Richard Henderson
2019-10-17 18:50 ` [PATCH v7 03/20] target/arm: Split out rebuild_hflags_common_32 Richard Henderson
2019-10-17 18:50 ` [PATCH v7 04/20] target/arm: Split arm_cpu_data_is_big_endian Richard Henderson
2019-10-17 18:50 ` [PATCH v7 05/20] target/arm: Split out rebuild_hflags_m32 Richard Henderson
2019-10-17 18:50 ` [PATCH v7 06/20] target/arm: Reduce tests vs M-profile in cpu_get_tb_cpu_state Richard Henderson
2019-10-17 18:50 ` [PATCH v7 07/20] target/arm: Split out rebuild_hflags_a32 Richard Henderson
2019-10-17 18:50 ` [PATCH v7 08/20] target/arm: Split out rebuild_hflags_aprofile Richard Henderson
2019-10-17 18:50 ` [PATCH v7 09/20] target/arm: Hoist XSCALE_CPAR, VECLEN, VECSTRIDE in cpu_get_tb_cpu_state Richard Henderson
2019-10-17 18:51 ` [PATCH v7 10/20] target/arm: Simplify set of PSTATE_SS " Richard Henderson
2019-10-17 18:51 ` [PATCH v7 11/20] target/arm: Hoist computation of TBFLAG_A32.VFPEN Richard Henderson
2019-10-17 18:51 ` [PATCH v7 12/20] target/arm: Add arm_rebuild_hflags Richard Henderson
2019-10-17 18:51 ` [PATCH v7 13/20] target/arm: Split out arm_mmu_idx_el Richard Henderson
2019-10-17 18:51 ` Richard Henderson [this message]
2019-10-17 18:51 ` [PATCH v7 15/20] target/arm: Add HELPER(rebuild_hflags_{a32, a64, m32}) Richard Henderson
2019-10-17 18:51 ` [PATCH v7 16/20] target/arm: Rebuild hflags at EL changes Richard Henderson
2019-10-17 18:51 ` [PATCH v7 17/20] target/arm: Rebuild hflags at MSR writes Richard Henderson
2019-10-18 12:32 ` Peter Maydell
2019-10-18 14:30 ` Richard Henderson
2019-10-18 14:49 ` Peter Maydell
2019-10-17 18:51 ` [PATCH v7 18/20] target/arm: Rebuild hflags at CPSR writes Richard Henderson
2019-10-17 18:51 ` [PATCH v7 19/20] target/arm: Rebuild hflags for M-profile Richard Henderson
2019-10-18 12:25 ` Peter Maydell
2019-10-18 14:31 ` Richard Henderson
2019-10-18 14:52 ` Peter Maydell
2019-10-18 14:55 ` Peter Maydell
2019-10-17 18:51 ` [PATCH v7 20/20] target/arm: Rely on hflags correct in cpu_get_tb_cpu_state Richard Henderson
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