[Qemu-devel] [PATCH 05/10] target-arm: Infer ARMv6(K) feature from ARMv7

[Peter Maydell]

From: Andreas Färber <address@hidden>

V7 && M => V6
V7 && !M => V6K

Signed-off-by: Andreas Färber <address@hidden>
Signed-off-by: Peter Maydell <address@hidden>
---
 target-arm/helper.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/target-arm/helper.c b/target-arm/helper.c
index a948b88..1108156 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -123,7 +123,6 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t 
id)
         env->cp15.c0_cachetype = 0x1dd20d2;
         break;
     case ARM_CPUID_CORTEXA8:
-        set_feature(env, ARM_FEATURE_V6K);
         set_feature(env, ARM_FEATURE_V7);
         set_feature(env, ARM_FEATURE_AUXCR);
         set_feature(env, ARM_FEATURE_THUMB2);
@@ -144,7 +143,6 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t 
id)
         env->cp15.c1_sys = 0x00c50078;
         break;
     case ARM_CPUID_CORTEXA9:
-        set_feature(env, ARM_FEATURE_V6K);
         set_feature(env, ARM_FEATURE_V7);
         set_feature(env, ARM_FEATURE_AUXCR);
         set_feature(env, ARM_FEATURE_THUMB2);
@@ -170,14 +168,12 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t 
id)
         env->cp15.c1_sys = 0x00c50078;
         break;
     case ARM_CPUID_CORTEXM3:
-        set_feature(env, ARM_FEATURE_V6);
         set_feature(env, ARM_FEATURE_THUMB2);
         set_feature(env, ARM_FEATURE_V7);
         set_feature(env, ARM_FEATURE_M);
         set_feature(env, ARM_FEATURE_THUMB_DIV);
         break;
     case ARM_CPUID_ANY: /* For userspace emulation.  */
-        set_feature(env, ARM_FEATURE_V6K);
         set_feature(env, ARM_FEATURE_V7);
         set_feature(env, ARM_FEATURE_THUMB2);
         set_feature(env, ARM_FEATURE_VFP);
@@ -237,6 +233,11 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t 
id)
     /* Some features automatically imply others: */
     if (arm_feature(env, ARM_FEATURE_V7)) {
         set_feature(env, ARM_FEATURE_VAPA);
+        if (!arm_feature(env, ARM_FEATURE_M)) {
+            set_feature(env, ARM_FEATURE_V6K);
+        } else {
+            set_feature(env, ARM_FEATURE_V6);
+        }
     }
     if (arm_feature(env, ARM_FEATURE_V6K)) {
         set_feature(env, ARM_FEATURE_V6);
-- 
1.7.1