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target-arm: Add register_cp_regs_for_features()

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

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2012-06-20 11:57:09 +00:00
parent e8070a23a8
commit 2ceb98c007
3 changed files with 14 additions and 0 deletions
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1
target-arm/cpu-qom.h
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@ -107,5 +107,6 @@ static inline ARMCPU *arm_env_get_cpu(CPUARMState *env)
#define ENV_GET_CPU(e) CPU(arm_env_get_cpu(e)) #define ENV_GET_CPU(e) CPU(arm_env_get_cpu(e))
void arm_cpu_realize(ARMCPU *cpu); void arm_cpu_realize(ARMCPU *cpu);
void register_cp_regs_for_features(ARMCPU *cpu);
#endif #endif

2
target-arm/cpu.c
View file

@ -216,6 +216,8 @@ void arm_cpu_realize(ARMCPU *cpu)
if (arm_feature(env, ARM_FEATURE_VFP3)) { if (arm_feature(env, ARM_FEATURE_VFP3)) {
set_feature(env, ARM_FEATURE_VFP); set_feature(env, ARM_FEATURE_VFP);
} }
register_cp_regs_for_features(cpu);
} }
/* CPU models */ /* CPU models */

11
target-arm/helper.c
View file

@ -56,6 +56,17 @@ static int vfp_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg)
return 0; 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_arm_init(const char *cpu_model)
{ {
ARMCPU *cpu; ARMCPU *cpu;