[v9,03/24] target/arm: Split out rebuild_hflags_common_32
diff mbox series

Message ID 20191023150057.25731-4-richard.henderson@linaro.org
State New
Headers show
Series
  • target/arm: Reduce overhead of cpu_get_tb_cpu_state
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Commit Message

Richard Henderson Oct. 23, 2019, 3 p.m. UTC
Create a function to compute the values of the TBFLAG_A32 bits
that will be cached, and are used by all profiles.

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

Patch
diff mbox series

diff --git a/target/arm/helper.c b/target/arm/helper.c
index 69da04786e..f05d042474 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11070,6 +11070,15 @@  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)
 {
@@ -11141,7 +11150,7 @@  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;
@@ -11151,12 +11160,11 @@  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);
@@ -11166,8 +11174,6 @@  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