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[Qemu-devel] [PATCH v5 14/17] target/arm: Hoist store to cs_base in cpu_
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH v5 14/17] target/arm: Hoist store to cs_base in cpu_get_tb_cpu_state |
Date: |
Tue, 20 Aug 2019 14:07:17 -0700 |
By performing this store early, we avoid having to save and restore
the register holding the address around any function calls.
Signed-off-by: Richard Henderson <address@hidden>
---
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 19bdb9b9d6..7a94495788 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11187,6 +11187,7 @@ 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)) {
@@ -11260,7 +11261,6 @@ void cpu_get_tb_cpu_state(CPUARMState *env,
target_ulong *pc,
}
*pflags = flags;
- *cs_base = 0;
}
#ifdef TARGET_AARCH64
--
2.17.1
- [Qemu-devel] [PATCH v5 00/17] target/arm: Reduce overhead of cpu_get_tb_cpu_state, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 01/17] target/arm: Split out rebuild_hflags_common, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 02/17] target/arm: Split out rebuild_hflags_a64, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 06/17] target/arm: Reduce tests vs M-profile in cpu_get_tb_cpu_state, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 03/17] target/arm: Split out rebuild_hflags_common_32, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 09/17] target/arm: Hoist XSCALE_CPAR, VECLEN, VECSTRIDE in cpu_get_tb_cpu_state, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 04/17] target/arm: Split arm_cpu_data_is_big_endian, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 14/17] target/arm: Hoist store to cs_base in cpu_get_tb_cpu_state,
Richard Henderson <=
- [Qemu-devel] [PATCH v5 12/17] target/arm: Add arm_rebuild_hflags, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 13/17] target/arm: Split out arm_mmu_idx_el, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 16/17] target/arm: Rebuild hflags at EL changes and MSR writes, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 05/17] target/arm: Split out rebuild_hflags_m32, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 07/17] target/arm: Split out rebuild_hflags_a32, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 08/17] target/arm: Split out rebuild_hflags_aprofile, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 10/17] target/arm: Simplify set of PSTATE_SS in cpu_get_tb_cpu_state, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 11/17] target/arm: Hoist computation of TBFLAG_A32.VFPEN, Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 15/17] target/arm: Add HELPER(rebuild_hflags_{a32, a64, m32}), Richard Henderson, 2019/08/20
- [Qemu-devel] [PATCH v5 17/17] target/arm: Rely on hflags correct in cpu_get_tb_cpu_state, Richard Henderson, 2019/08/20