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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org
Subject: [Qemu-devel] [PATCH v5 03/17] target/arm: Split out rebuild_hflags_common_32
Date: Tue, 20 Aug 2019 14:07:06 -0700	[thread overview]
Message-ID: <20190820210720.18976-4-richard.henderson@linaro.org> (raw)
In-Reply-To: <20190820210720.18976-1-richard.henderson@linaro.org>

Create a function to compute the values of the TBFLAG_A32 bits
that will be cached, and are used by all profiles.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/helper.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/target/arm/helper.c b/target/arm/helper.c
index 02cb43cf58..1844c13a19 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11032,6 +11032,15 @@ static uint32_t rebuild_hflags_common(CPUARMState *env, int fp_el,
     return flags;
 }
 
+static uint32_t rebuild_hflags_common_32(CPUARMState *env, int fp_el,
+                                         ARMMMUIdx mmu_idx, uint32_t flags)
+{
+    flags = FIELD_DP32(flags, TBFLAG_A32, SCTLR_B, arm_sctlr_b(env));
+    flags = FIELD_DP32(flags, TBFLAG_A32, NS, !access_secure_reg(env));
+
+    return rebuild_hflags_common(env, fp_el, mmu_idx, flags);
+}
+
 static uint32_t rebuild_hflags_a64(CPUARMState *env, int el, int fp_el,
                                    ARMMMUIdx mmu_idx)
 {
@@ -11103,7 +11112,7 @@ void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
     ARMMMUIdx mmu_idx = arm_mmu_idx(env);
     int current_el = arm_current_el(env);
     int fp_el = fp_exception_el(env, current_el);
-    uint32_t flags = 0;
+    uint32_t flags;
 
     if (is_a64(env)) {
         *pc = env->pc;
@@ -11113,12 +11122,11 @@ void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
         }
     } else {
         *pc = env->regs[15];
+        flags = rebuild_hflags_common_32(env, fp_el, mmu_idx, 0);
         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);
-        flags = FIELD_DP32(flags, TBFLAG_A32, SCTLR_B, arm_sctlr_b(env));
-        flags = FIELD_DP32(flags, TBFLAG_A32, NS, !access_secure_reg(env));
         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);
@@ -11128,8 +11136,6 @@ void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
             flags = FIELD_DP32(flags, TBFLAG_A32,
                                XSCALE_CPAR, env->cp15.c15_cpar);
         }
-
-        flags = rebuild_hflags_common(env, fp_el, mmu_idx, flags);
     }
 
     /* The SS_ACTIVE and PSTATE_SS bits correspond to the state machine
-- 
2.17.1



  parent reply	other threads:[~2019-08-20 21:25 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-20 21:07 [Qemu-devel] [PATCH v5 00/17] target/arm: Reduce overhead of cpu_get_tb_cpu_state Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 01/17] target/arm: Split out rebuild_hflags_common Richard Henderson
2019-09-05 13:58   ` [Qemu-devel] [Qemu-arm] " Alex Bennée
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 02/17] target/arm: Split out rebuild_hflags_a64 Richard Henderson
2019-09-05 15:28   ` [Qemu-devel] [Qemu-arm] " Alex Bennée
2019-09-06  3:26     ` Richard Henderson
2019-09-06 15:52       ` Alex Bennée
2019-08-20 21:07 ` Richard Henderson [this message]
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 04/17] target/arm: Split arm_cpu_data_is_big_endian Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 05/17] target/arm: Split out rebuild_hflags_m32 Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 06/17] target/arm: Reduce tests vs M-profile in cpu_get_tb_cpu_state Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 07/17] target/arm: Split out rebuild_hflags_a32 Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 08/17] target/arm: Split out rebuild_hflags_aprofile Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 09/17] target/arm: Hoist XSCALE_CPAR, VECLEN, VECSTRIDE in cpu_get_tb_cpu_state Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 10/17] target/arm: Simplify set of PSTATE_SS " Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 11/17] target/arm: Hoist computation of TBFLAG_A32.VFPEN Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 12/17] target/arm: Add arm_rebuild_hflags Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 13/17] target/arm: Split out arm_mmu_idx_el Richard Henderson
2019-09-06  7:12   ` Philippe Mathieu-Daudé
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 14/17] target/arm: Hoist store to cs_base in cpu_get_tb_cpu_state Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 15/17] target/arm: Add HELPER(rebuild_hflags_{a32, a64, m32}) Richard Henderson
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 16/17] target/arm: Rebuild hflags at EL changes and MSR writes Richard Henderson
2019-09-05 13:53   ` Alex Bennée
2019-08-20 21:07 ` [Qemu-devel] [PATCH v5 17/17] target/arm: Rely on hflags correct in cpu_get_tb_cpu_state Richard Henderson
2019-09-05 15:23   ` [Qemu-devel] [Qemu-arm] " Alex Bennée
2019-09-05 15:40     ` Laurent Desnogues
2019-09-05 15:50       ` Alex Bennée
2019-09-06  3:02         ` Richard Henderson
2019-08-20 23:54 ` [Qemu-devel] [PATCH v5 00/17] target/arm: Reduce overhead of cpu_get_tb_cpu_state Richard Henderson
2019-09-04 10:48   ` Peter Maydell
2019-09-04 17:26     ` Richard Henderson

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