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Re: [RFC v2 04/12] target/ppc: powerpc_excp: Stop passing excp_model aro


From: David Gibson
Subject: Re: [RFC v2 04/12] target/ppc: powerpc_excp: Stop passing excp_model around
Date: Sat, 25 Dec 2021 17:33:55 +1100

On Mon, Dec 20, 2021 at 03:18:55PM -0300, Fabiano Rosas wrote:
> We can just access it directly in powerpc_excp.
> 
> Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>

> ---
>  target/ppc/excp_helper.c | 43 ++++++++++++++++++++--------------------
>  1 file changed, 21 insertions(+), 22 deletions(-)
> 
> diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
> index 7bdc1e8410..45641f6d1d 100644
> --- a/target/ppc/excp_helper.c
> +++ b/target/ppc/excp_helper.c
> @@ -293,10 +293,11 @@ static inline void powerpc_set_excp_state(PowerPCCPU 
> *cpu,
>   * Note that this function should be greatly optimized when called
>   * with a constant excp, from ppc_hw_interrupt
>   */
> -static inline void powerpc_excp(PowerPCCPU *cpu, int excp_model, int excp)
> +static inline void powerpc_excp(PowerPCCPU *cpu, int excp)
>  {
>      CPUState *cs = CPU(cpu);
>      CPUPPCState *env = &cpu->env;
> +    int excp_model = env->excp_model;
>      target_ulong msr, new_msr, vector;
>      int srr0, srr1, lev = -1;
>  
> @@ -878,9 +879,8 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int 
> excp_model, int excp)
>  void ppc_cpu_do_interrupt(CPUState *cs)
>  {
>      PowerPCCPU *cpu = POWERPC_CPU(cs);
> -    CPUPPCState *env = &cpu->env;
>  
> -    powerpc_excp(cpu, env->excp_model, cs->exception_index);
> +    powerpc_excp(cpu, cs->exception_index);
>  }
>  
>  static void ppc_hw_interrupt(CPUPPCState *env)
> @@ -891,20 +891,20 @@ static void ppc_hw_interrupt(CPUPPCState *env)
>      /* External reset */
>      if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
>          env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
> -        powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_RESET);
> +        powerpc_excp(cpu, POWERPC_EXCP_RESET);
>          return;
>      }
>      /* Machine check exception */
>      if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
>          env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
> -        powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_MCHECK);
> +        powerpc_excp(cpu, POWERPC_EXCP_MCHECK);
>          return;
>      }
>  #if 0 /* TODO */
>      /* External debug exception */
>      if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
>          env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
> -        powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DEBUG);
> +        powerpc_excp(cpu, POWERPC_EXCP_DEBUG);
>          return;
>      }
>  #endif
> @@ -924,7 +924,7 @@ static void ppc_hw_interrupt(CPUPPCState *env)
>          if ((async_deliver || msr_hv == 0) && hdice) {
>              /* HDEC clears on delivery */
>              env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_HDECR);
> +            powerpc_excp(cpu, POWERPC_EXCP_HDECR);
>              return;
>          }
>      }
> @@ -934,7 +934,7 @@ static void ppc_hw_interrupt(CPUPPCState *env)
>          /* LPCR will be clear when not supported so this will work */
>          bool hvice = !!(env->spr[SPR_LPCR] & LPCR_HVICE);
>          if ((async_deliver || msr_hv == 0) && hvice) {
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_HVIRT);
> +            powerpc_excp(cpu, POWERPC_EXCP_HVIRT);
>              return;
>          }
>      }
> @@ -946,14 +946,14 @@ static void ppc_hw_interrupt(CPUPPCState *env)
>          /* HEIC blocks delivery to the hypervisor */
>          if ((async_deliver && !(heic && msr_hv && !msr_pr)) ||
>              (env->has_hv_mode && msr_hv == 0 && !lpes0)) {
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_EXTERNAL);
> +            powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL);
>              return;
>          }
>      }
>      if (msr_ce != 0) {
>          /* External critical interrupt */
>          if (env->pending_interrupts & (1 << PPC_INTERRUPT_CEXT)) {
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_CRITICAL);
> +            powerpc_excp(cpu, POWERPC_EXCP_CRITICAL);
>              return;
>          }
>      }
> @@ -961,24 +961,24 @@ static void ppc_hw_interrupt(CPUPPCState *env)
>          /* Watchdog timer on embedded PowerPC */
>          if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
>              env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_WDT);
> +            powerpc_excp(cpu, POWERPC_EXCP_WDT);
>              return;
>          }
>          if (env->pending_interrupts & (1 << PPC_INTERRUPT_CDOORBELL)) {
>              env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CDOORBELL);
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DOORCI);
> +            powerpc_excp(cpu, POWERPC_EXCP_DOORCI);
>              return;
>          }
>          /* Fixed interval timer on embedded PowerPC */
>          if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
>              env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_FIT);
> +            powerpc_excp(cpu, POWERPC_EXCP_FIT);
>              return;
>          }
>          /* Programmable interval timer on embedded PowerPC */
>          if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
>              env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_PIT);
> +            powerpc_excp(cpu, POWERPC_EXCP_PIT);
>              return;
>          }
>          /* Decrementer exception */
> @@ -986,32 +986,32 @@ static void ppc_hw_interrupt(CPUPPCState *env)
>              if (ppc_decr_clear_on_delivery(env)) {
>                  env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
>              }
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DECR);
> +            powerpc_excp(cpu, POWERPC_EXCP_DECR);
>              return;
>          }
>          if (env->pending_interrupts & (1 << PPC_INTERRUPT_DOORBELL)) {
>              env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
>              if (is_book3s_arch2x(env)) {
> -                powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_SDOOR);
> +                powerpc_excp(cpu, POWERPC_EXCP_SDOOR);
>              } else {
> -                powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DOORI);
> +                powerpc_excp(cpu, POWERPC_EXCP_DOORI);
>              }
>              return;
>          }
>          if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDOORBELL)) {
>              env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDOORBELL);
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_SDOOR_HV);
> +            powerpc_excp(cpu, POWERPC_EXCP_SDOOR_HV);
>              return;
>          }
>          if (env->pending_interrupts & (1 << PPC_INTERRUPT_PERFM)) {
>              env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PERFM);
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_PERFM);
> +            powerpc_excp(cpu, POWERPC_EXCP_PERFM);
>              return;
>          }
>          /* Thermal interrupt */
>          if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
>              env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
> -            powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_THERM);
> +            powerpc_excp(cpu, POWERPC_EXCP_THERM);
>              return;
>          }
>      }
> @@ -1036,9 +1036,8 @@ static void ppc_hw_interrupt(CPUPPCState *env)
>  void ppc_cpu_do_system_reset(CPUState *cs)
>  {
>      PowerPCCPU *cpu = POWERPC_CPU(cs);
> -    CPUPPCState *env = &cpu->env;
>  
> -    powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_RESET);
> +    powerpc_excp(cpu, POWERPC_EXCP_RESET);
>  }
>  
>  void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector)

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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