Re: [Qemu-arm] [PATCH 2/4] target-arm: Move get/set_r13_banked() to op_helper.c

["Edgar E. Iglesias" <edgar.iglesias@gmail.com>]

On Thu, Feb 11, 2016 at 07:11:47PM +0000, Peter Maydell wrote:
> Move get/set_r13_banked() from helper.c to op_helper.c. This will
> let us add exception-raising code to them, and also puts them
> in the same file as get/set_user_reg(), which makes some conceptual
> sense.
> 
> (The original reason for the helper.c/op_helper.c split was that
> only op_helper.c had access to the CPU env pointer; this distinction
> has not been true for a long time, though, and so the split is
> now rather arbitrary.)
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>


> ---
>  target-arm/helper.c    | 33 ---------------------------------
>  target-arm/op_helper.c | 37 +++++++++++++++++++++++++++++++++++++
>  2 files changed, 37 insertions(+), 33 deletions(-)
> 
> diff --git a/target-arm/helper.c b/target-arm/helper.c
> index bb913c6..c46e3d0 100644
> --- a/target-arm/helper.c
> +++ b/target-arm/helper.c
> @@ -5365,21 +5365,6 @@ void switch_mode(CPUARMState *env, int mode)
>      }
>  }
>  
> -void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val)
> -{
> -    ARMCPU *cpu = arm_env_get_cpu(env);
> -
> -    cpu_abort(CPU(cpu), "banked r13 write\n");
> -}
> -
> -uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode)
> -{
> -    ARMCPU *cpu = arm_env_get_cpu(env);
> -
> -    cpu_abort(CPU(cpu), "banked r13 read\n");
> -    return 0;
> -}
> -
>  uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx,
>                                   uint32_t cur_el, bool secure)
>  {
> @@ -7762,24 +7747,6 @@ hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr,
>      return phys_addr;
>  }
>  
> -void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val)
> -{
> -    if ((env->uncached_cpsr & CPSR_M) == mode) {
> -        env->regs[13] = val;
> -    } else {
> -        env->banked_r13[bank_number(mode)] = val;
> -    }
> -}
> -
> -uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode)
> -{
> -    if ((env->uncached_cpsr & CPSR_M) == mode) {
> -        return env->regs[13];
> -    } else {
> -        return env->banked_r13[bank_number(mode)];
> -    }
> -}
> -
>  uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg)
>  {
>      ARMCPU *cpu = arm_env_get_cpu(env);
> diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c
> index 049b521..053e9b6 100644
> --- a/target-arm/op_helper.c
> +++ b/target-arm/op_helper.c
> @@ -457,6 +457,43 @@ void HELPER(set_user_reg)(CPUARMState *env, uint32_t regno, uint32_t val)
>      }
>  }
>  
> +#if defined(CONFIG_USER_ONLY)
> +void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val)
> +{
> +    ARMCPU *cpu = arm_env_get_cpu(env);
> +
> +    cpu_abort(CPU(cpu), "banked r13 write\n");
> +}
> +
> +uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode)
> +{
> +    ARMCPU *cpu = arm_env_get_cpu(env);
> +
> +    cpu_abort(CPU(cpu), "banked r13 read\n");
> +    return 0;
> +}
> +
> +#else
> +
> +void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val)
> +{
> +    if ((env->uncached_cpsr & CPSR_M) == mode) {
> +        env->regs[13] = val;
> +    } else {
> +        env->banked_r13[bank_number(mode)] = val;
> +    }
> +}
> +
> +uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode)
> +{
> +    if ((env->uncached_cpsr & CPSR_M) == mode) {
> +        return env->regs[13];
> +    } else {
> +        return env->banked_r13[bank_number(mode)];
> +    }
> +}
> +#endif
> +
>  void HELPER(access_check_cp_reg)(CPUARMState *env, void *rip, uint32_t syndrome,
>                                   uint32_t isread)
>  {
> -- 
> 1.9.1
>