Re: [Qemu-devel] [PATCH 4/6] target/mips: Correct the second argument type of cpu_supports_isa()

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 1/21/19 8:08 PM, Aleksandar Markovic wrote:
> From: Aleksandar Markovic <amarkovic@wavecomp.com>
> 
> "insn_flags" bitfield was expanded from 32-bit to 64-bit at one moment.

"at one moment" -> "in f9c9cd63e3"

> However, this was not reflected at the second argument of the function
> cpu_supports_isa(). By chance, this did not create a wrong behavior,
> since the second argument was always with the left-most half zero, but
> it is still a bug waiting to happen. correct by changint the type of
> the second argument to be 64-bit always.

Oops.

> 
> Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>  target/mips/cpu.h       | 2 +-
>  target/mips/translate.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/target/mips/cpu.h b/target/mips/cpu.h
> index 03c03fd..fd22bd5 100644
> --- a/target/mips/cpu.h
> +++ b/target/mips/cpu.h
> @@ -1011,7 +1011,7 @@ int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc);
>  #define CPU_RESOLVING_TYPE TYPE_MIPS_CPU
>  
>  bool cpu_supports_cps_smp(const char *cpu_type);
> -bool cpu_supports_isa(const char *cpu_type, unsigned int isa);
> +bool cpu_supports_isa(const char *cpu_type, uint64_t isa);
>  void cpu_set_exception_base(int vp_index, target_ulong address);
>  
>  /* mips_int.c */
> diff --git a/target/mips/translate.c b/target/mips/translate.c
> index ceaa582..b660235 100644
> --- a/target/mips/translate.c
> +++ b/target/mips/translate.c
> @@ -29803,7 +29803,7 @@ bool cpu_supports_cps_smp(const char *cpu_type)
>      return (mcc->cpu_def->CP0_Config3 & (1 << CP0C3_CMGCR)) != 0;
>  }
>  
> -bool cpu_supports_isa(const char *cpu_type, unsigned int isa)
> +bool cpu_supports_isa(const char *cpu_type, uint64_t isa)
>  {
>      const MIPSCPUClass *mcc = MIPS_CPU_CLASS(object_class_by_name(cpu_type));
>      return (mcc->cpu_def->insn_flags & isa) != 0;
>