Re: [Qemu-devel] [Qemu-arm] [PATCH v5 1/3] target/arm: Add "ARM_CP_NO_GDB" as a new bit field for ARMCPRegInfo type

[Alex Bennée]

Abdallah Bouassida <address@hidden> writes:

> This is a preparation for the coming feature of creating dynamically an XML
> description for the ARM sysregs.
> A register has ARM_CP_NO_GDB enabled will not be shown in the dynamic XML.
> This bit is enabled automatically when creating CP_ANY wildcard aliases.
> This bit could be enabled manually for any register we want to remove from the
> dynamic XML description.
>
> Signed-off-by: Abdallah Bouassida <address@hidden>
> Reviewed-by: Peter Maydell <address@hidden>

Reviewed-by: Alex Bennée <address@hidden>

> ---
>  target/arm/cpu.h    | 3 ++-
>  target/arm/helper.c | 2 +-
>  2 files changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/target/arm/cpu.h b/target/arm/cpu.h
> index 1e7e1f8..5a6ea24 100644
> --- a/target/arm/cpu.h
> +++ b/target/arm/cpu.h
> @@ -1815,10 +1815,11 @@ static inline uint64_t cpreg_to_kvm_id(uint32_t 
> cpregid)
>  #define ARM_LAST_SPECIAL         ARM_CP_DC_ZVA
>  #define ARM_CP_FPU               0x1000
>  #define ARM_CP_SVE               0x2000
> +#define ARM_CP_NO_GDB            0x4000
>  /* Used only as a terminator for ARMCPRegInfo lists */
>  #define ARM_CP_SENTINEL          0xffff
>  /* Mask of only the flag bits in a type field */
> -#define ARM_CP_FLAG_MASK         0x30ff
> +#define ARM_CP_FLAG_MASK         0x70ff
>
>  /* Valid values for ARMCPRegInfo state field, indicating which of
>   * the AArch32 and AArch64 execution states this register is visible in.
> diff --git a/target/arm/helper.c b/target/arm/helper.c
> index 09893e3..db8c925 100644
> --- a/target/arm/helper.c
> +++ b/target/arm/helper.c
> @@ -5664,7 +5664,7 @@ static void add_cpreg_to_hashtable(ARMCPU *cpu, const 
> ARMCPRegInfo *r,
>      if (((r->crm == CP_ANY) && crm != 0) ||
>          ((r->opc1 == CP_ANY) && opc1 != 0) ||
>          ((r->opc2 == CP_ANY) && opc2 != 0)) {
> -        r2->type |= ARM_CP_ALIAS;
> +        r2->type |= ARM_CP_ALIAS | ARM_CP_NO_GDB;
>      }
>
>      /* Check that raw accesses are either forbidden or handled. Note that


--
Alex Bennée