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authorRichard Henderson <richard.henderson@linaro.org>2019-10-23 11:00:43 -0400
committerPeter Maydell <peter.maydell@linaro.org>2019-10-24 17:16:27 +0100
commit60e12c3776a03a0535fcd4f4ea3eba8f60c0ab6e (patch)
treeff354bbd998c3a87466983b1852dcc17cf498bf9
parentbbad7c62d461a013100cc6403c0d21c3cca29fbe (diff)
downloadqemu-arm-60e12c3776a03a0535fcd4f4ea3eba8f60c0ab6e.tar.gz
target/arm: Simplify set of PSTATE_SS in cpu_get_tb_cpu_state
Hoist the variable load for PSTATE into the existing test vs is_a64. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20191023150057.25731-11-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--target/arm/helper.c20
1 files changed, 8 insertions, 12 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c
index e2a62cf19a..398e5f5d6d 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11197,7 +11197,7 @@ 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;
+ uint32_t flags, pstate_for_ss;
if (is_a64(env)) {
*pc = env->pc;
@@ -11205,6 +11205,7 @@ void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
if (cpu_isar_feature(aa64_bti, env_archcpu(env))) {
flags = FIELD_DP32(flags, TBFLAG_A64, BTYPE, env->btype);
}
+ pstate_for_ss = env->pstate;
} else {
*pc = env->regs[15];
@@ -11257,9 +11258,11 @@ void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
|| arm_el_is_aa64(env, 1) || arm_feature(env, ARM_FEATURE_M)) {
flags = FIELD_DP32(flags, TBFLAG_A32, VFPEN, 1);
}
+ pstate_for_ss = env->uncached_cpsr;
}
- /* The SS_ACTIVE and PSTATE_SS bits correspond to the state machine
+ /*
+ * The SS_ACTIVE and PSTATE_SS bits correspond to the state machine
* states defined in the ARM ARM for software singlestep:
* SS_ACTIVE PSTATE.SS State
* 0 x Inactive (the TB flag for SS is always 0)
@@ -11267,16 +11270,9 @@ void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
* 1 1 Active-not-pending
* SS_ACTIVE is set in hflags; PSTATE_SS is computed every TB.
*/
- if (FIELD_EX32(flags, TBFLAG_ANY, SS_ACTIVE)) {
- if (is_a64(env)) {
- if (env->pstate & PSTATE_SS) {
- flags = FIELD_DP32(flags, TBFLAG_ANY, PSTATE_SS, 1);
- }
- } else {
- if (env->uncached_cpsr & PSTATE_SS) {
- flags = FIELD_DP32(flags, TBFLAG_ANY, PSTATE_SS, 1);
- }
- }
+ if (FIELD_EX32(flags, TBFLAG_ANY, SS_ACTIVE) &&
+ (pstate_for_ss & PSTATE_SS)) {
+ flags = FIELD_DP32(flags, TBFLAG_ANY, PSTATE_SS, 1);
}
*pflags = flags;