target-arm: Add register_cp_regs_for_features()

Add new function register_cp_regs_for_features() as a place to
register coprocessor registers dependent on feature flags.

Signed-off-by: Peter Maydell <[email protected]>

diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h
index 848ac2ffdf1d929e460561f9098add59c0fc2e76..4ccfc897c28fc8d801b0caf10a64a57e5ca73f7d 100644 (file)
--- a/target-arm/cpu-qom.h
+++ b/target-arm/cpu-qom.h
@@ -107,5 +107,6 @@ static inline ARMCPU *arm_env_get_cpu(CPUARMState *env)
 #define ENV_GET_CPU(e) CPU(arm_env_get_cpu(e))
 
 void arm_cpu_realize(ARMCPU *cpu);
+void register_cp_regs_for_features(ARMCPU *cpu);
 
 #endif

diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index 6456a3dfa80cb18704540c8b670df7640b547a75..1aff266b6b83ecc761eba24c7fc99edc93de32eb 100644 (file)
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -216,6 +216,8 @@ void arm_cpu_realize(ARMCPU *cpu)
     if (arm_feature(env, ARM_FEATURE_VFP3)) {
         set_feature(env, ARM_FEATURE_VFP);
     }
+
+    register_cp_regs_for_features(cpu);
 }
 
 /* CPU models */

diff --git a/target-arm/helper.c b/target-arm/helper.c
index 57bb78b7bd651fadb53d032ac77f2d79eaf82452..f7c9a3a1e8d4d2ff3baa73d41fba55a03fcaa124 100644 (file)
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -56,6 +56,17 @@ static int vfp_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg)
     return 0;
 }
 
+void register_cp_regs_for_features(ARMCPU *cpu)
+{
+    /* Register all the coprocessor registers based on feature bits */
+    CPUARMState *env = &cpu->env;
+    if (arm_feature(env, ARM_FEATURE_M)) {
+        /* M profile has no coprocessor registers */
+        return;
+    }
+
+}
+
 ARMCPU *cpu_arm_init(const char *cpu_model)
 {
     ARMCPU *cpu;