On Tue, Oct 19, 2021 at 11:45 AM Warner Losh <i...@bsdimp.com> wrote:
>
> Implement the extended HW capabilities for HWCAP2.
>
> Signed-off-by: Klye Evans <kev...@freebsd.org>
> Signed-off-by: Warner Losh <i...@bsdimp.com>
> ---
> bsd-user/arm/target_arch_elf.h | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
>
> diff --git a/bsd-user/arm/target_arch_elf.h b/bsd-user/arm/target_arch_elf.h
> index 02d25b8926..4a0215d02e 100644
> --- a/bsd-user/arm/target_arch_elf.h
> +++ b/bsd-user/arm/target_arch_elf.h
> @@ -32,6 +32,7 @@
> #define ELF_EXEC_PAGESIZE 4096
>
> #define ELF_HWCAP get_elf_hwcap()
> +#define ELF_HWCAP2 get_elf_hwcap2()
>
> #define GET_FEATURE(feat, hwcap) \
> do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
> @@ -64,6 +65,14 @@ enum {
> ARM_HWCAP_ARM_EVTSTRM = 1 << 21,
> };
>
> +enum {
> + ARM_HWCAP2_ARM_AES = 1 << 0,
> + ARM_HWCAP2_ARM_PMULL = 1 << 1,
> + ARM_HWCAP2_ARM_SHA1 = 1 << 2,
> + ARM_HWCAP2_ARM_SHA2 = 1 << 3,
> + ARM_HWCAP2_ARM_CRC32 = 1 << 4,
> +};
> +
> static uint32_t get_elf_hwcap(void)
> {
> ARMCPU *cpu = ARM_CPU(thread_cpu);
> @@ -100,6 +109,19 @@ static uint32_t get_elf_hwcap(void)
> return hwcaps;
> }
>
> +static uint32_t get_elf_hwcap2(void)
> +{
> + ARMCPU *cpu = ARM_CPU(thread_cpu);
> + uint32_t hwcaps = 0;
> +
> + GET_FEATURE_ID(aa32_aes, ARM_HWCAP2_ARM_AES);
> + GET_FEATURE_ID(aa32_pmull, ARM_HWCAP2_ARM_PMULL);
> + GET_FEATURE_ID(aa32_sha1, ARM_HWCAP2_ARM_SHA1);
> + GET_FEATURE_ID(aa32_sha2, ARM_HWCAP2_ARM_SHA2);
> + GET_FEATURE_ID(aa32_crc32, ARM_HWCAP2_ARM_CRC32);
> + return hwcaps;
> +}
> +
> #undef GET_FEATURE
> #undef GET_FEATURE_ID
>
> --
> 2.32.0
>
Reviewed-by: Kyle Evans <kev...@freebsd.org>
