[PATCH 01/18] target/arm: remove redundant tests

[remi . denis . courmont]

From: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>

In this context, the HCR value is the effective value, and thus is
zero in secure mode. The tests for HCR.{F,I}MO are sufficient.

Signed-off-by: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/cpu.c    |  8 ++++----
 target/arm/helper.c | 10 ++++------
 2 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index d6188f6566..0f004d8e51 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -450,14 +450,14 @@ static inline bool arm_excp_unmasked(CPUState *cs, 
unsigned int excp_idx,
         break;
 
     case EXCP_VFIQ:
-        if (secure || !(hcr_el2 & HCR_FMO) || (hcr_el2 & HCR_TGE)) {
-            /* VFIQs are only taken when hypervized and non-secure.  */
+        if (!(hcr_el2 & HCR_FMO) || (hcr_el2 & HCR_TGE)) {
+            /* VFIQs are only taken when hypervized.  */
             return false;
         }
         return !(env->daif & PSTATE_F);
     case EXCP_VIRQ:
-        if (secure || !(hcr_el2 & HCR_IMO) || (hcr_el2 & HCR_TGE)) {
-            /* VIRQs are only taken when hypervized and non-secure.  */
+        if (!(hcr_el2 & HCR_IMO) || (hcr_el2 & HCR_TGE)) {
+            /* VIRQs are only taken when hypervized.  */
             return false;
         }
         return !(env->daif & PSTATE_I);
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 7b8bcd6903..786950cfba 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -2083,13 +2083,11 @@ static void csselr_write(CPUARMState *env, const 
ARMCPRegInfo *ri,
 static uint64_t isr_read(CPUARMState *env, const ARMCPRegInfo *ri)
 {
     CPUState *cs = env_cpu(env);
-    uint64_t hcr_el2 = arm_hcr_el2_eff(env);
+    bool el1 = arm_current_el(env) == 1;
+    uint64_t hcr_el2 = el1 ? arm_hcr_el2_eff(env) : 0;
     uint64_t ret = 0;
-    bool allow_virt = (arm_current_el(env) == 1 &&
-                       (!arm_is_secure_below_el3(env) ||
-                        (env->cp15.scr_el3 & SCR_EEL2)));
 
-    if (allow_virt && (hcr_el2 & HCR_IMO)) {
+    if (hcr_el2 & HCR_IMO) {
         if (cs->interrupt_request & CPU_INTERRUPT_VIRQ) {
             ret |= CPSR_I;
         }
@@ -2099,7 +2097,7 @@ static uint64_t isr_read(CPUARMState *env, const 
ARMCPRegInfo *ri)
         }
     }
 
-    if (allow_virt && (hcr_el2 & HCR_FMO)) {
+    if (hcr_el2 & HCR_FMO) {
         if (cs->interrupt_request & CPU_INTERRUPT_VFIQ) {
             ret |= CPSR_F;
         }
-- 
2.29.2