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[PATCH v9 09/24] target/arm: Hoist XSCALE_CPAR, VECLEN, VECSTRIDE in cpu
From: |
Richard Henderson |
Subject: |
[PATCH v9 09/24] target/arm: Hoist XSCALE_CPAR, VECLEN, VECSTRIDE in cpu_get_tb_cpu_state |
Date: |
Wed, 23 Oct 2019 11:00:42 -0400 |
We do not need to compute any of these values for M-profile.
Further, XSCALE_CPAR overlaps VECSTRIDE so obviously the two
sets must be mutually exclusive.
Reviewed-by: Alex Bennée <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
target/arm/helper.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/target/arm/helper.c b/target/arm/helper.c
index ddd21edfcf..e2a62cf19a 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11235,21 +11235,28 @@ void cpu_get_tb_cpu_state(CPUARMState *env,
target_ulong *pc,
}
} else {
flags = rebuild_hflags_a32(env, fp_el, mmu_idx);
+
+ /*
+ * Note that XSCALE_CPAR shares bits with VECSTRIDE.
+ * Note that VECLEN+VECSTRIDE are RES0 for M-profile.
+ */
+ if (arm_feature(env, ARM_FEATURE_XSCALE)) {
+ flags = FIELD_DP32(flags, TBFLAG_A32,
+ XSCALE_CPAR, env->cp15.c15_cpar);
+ } else {
+ flags = FIELD_DP32(flags, TBFLAG_A32, VECLEN,
+ env->vfp.vec_len);
+ flags = FIELD_DP32(flags, TBFLAG_A32, VECSTRIDE,
+ env->vfp.vec_stride);
+ }
}
flags = FIELD_DP32(flags, TBFLAG_A32, THUMB, env->thumb);
- flags = FIELD_DP32(flags, TBFLAG_A32, VECLEN, env->vfp.vec_len);
- flags = FIELD_DP32(flags, TBFLAG_A32, VECSTRIDE, env->vfp.vec_stride);
flags = FIELD_DP32(flags, TBFLAG_A32, CONDEXEC, env->condexec_bits);
if (env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)
|| arm_el_is_aa64(env, 1) || arm_feature(env, ARM_FEATURE_M)) {
flags = FIELD_DP32(flags, TBFLAG_A32, VFPEN, 1);
}
- /* Note that XSCALE_CPAR shares bits with VECSTRIDE */
- if (arm_feature(env, ARM_FEATURE_XSCALE)) {
- flags = FIELD_DP32(flags, TBFLAG_A32,
- XSCALE_CPAR, env->cp15.c15_cpar);
- }
}
/* The SS_ACTIVE and PSTATE_SS bits correspond to the state machine
--
2.17.1
- [PATCH v9 00/24] target/arm: Reduce overhead of cpu_get_tb_cpu_state, Richard Henderson, 2019/10/23
- [PATCH v9 06/24] target/arm: Reduce tests vs M-profile in cpu_get_tb_cpu_state, Richard Henderson, 2019/10/23
- [PATCH v9 03/24] target/arm: Split out rebuild_hflags_common_32, Richard Henderson, 2019/10/23
- [PATCH v9 04/24] target/arm: Split arm_cpu_data_is_big_endian, Richard Henderson, 2019/10/23
- [PATCH v9 13/24] target/arm: Split out arm_mmu_idx_el, Richard Henderson, 2019/10/23
- [PATCH v9 07/24] target/arm: Split out rebuild_hflags_a32, Richard Henderson, 2019/10/23
- [PATCH v9 22/24] linux-user/aarch64: Rebuild hflags for TARGET_WORDS_BIGENDIAN, Richard Henderson, 2019/10/23
- [PATCH v9 09/24] target/arm: Hoist XSCALE_CPAR, VECLEN, VECSTRIDE in cpu_get_tb_cpu_state,
Richard Henderson <=
- [PATCH v9 17/24] target/arm: Rebuild hflags at MSR writes, Richard Henderson, 2019/10/23
- [PATCH v9 12/24] target/arm: Add arm_rebuild_hflags, Richard Henderson, 2019/10/23
- [PATCH v9 19/24] target/arm: Rebuild hflags at Xscale SCTLR writes, Richard Henderson, 2019/10/23
- [PATCH v9 14/24] target/arm: Hoist store to cs_base in cpu_get_tb_cpu_state, Richard Henderson, 2019/10/23
- [PATCH v9 05/24] target/arm: Split out rebuild_hflags_m32, Richard Henderson, 2019/10/23
- [PATCH v9 18/24] target/arm: Rebuild hflags at CPSR writes, Richard Henderson, 2019/10/23
- [PATCH v9 10/24] target/arm: Simplify set of PSTATE_SS in cpu_get_tb_cpu_state, Richard Henderson, 2019/10/23
- [PATCH v9 23/24] linux-user/arm: Rebuild hflags for TARGET_WORDS_BIGENDIAN, Richard Henderson, 2019/10/23
- [PATCH v9 15/24] target/arm: Add HELPER(rebuild_hflags_{a32, a64, m32}), Richard Henderson, 2019/10/23
- [PATCH v9 02/24] target/arm: Split out rebuild_hflags_a64, Richard Henderson, 2019/10/23