Re: [PATCH v3 6/6] linux-user: Add support for MIPS Loongson 2F/3E

[chen huacai]

Hi, Philippe,

On Wed, Dec 2, 2020 at 3:31 AM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>
> Userland ELF binaries using Longsoon SIMD instructions have the
> HWCAP_LOONGSON_MMI bit set [1].
> Binaries compiled for Longsoon 3E [2] have the HWCAP_LOONGSON_EXT
> bit set for the LQ / SQ instructions.
What is Loongson-3E? I think you want to say Loongson-3A?

Huacai
>
> [1] commit 8e2d5831e4b ("target/mips: Legalize Loongson insn flags")
> [2] commit af868995e1b ("target/mips: Add Loongson-3 CPU definition")
>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>  linux-user/elfload.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/linux-user/elfload.c b/linux-user/elfload.c
> index 2ba42d8e4bd..5a39a7dc021 100644
> --- a/linux-user/elfload.c
> +++ b/linux-user/elfload.c
> @@ -1023,6 +1023,8 @@ static uint32_t get_elf_hwcap(void)
>
>      GET_FEATURE_REG_EQU(CP0_Config0, CP0C0_AR, 3, 2, HWCAP_MIPS_R6);
>      GET_FEATURE_REG_SET(CP0_Config3, 1 << CP0C3_MSAP, HWCAP_MIPS_MSA);
> +    GET_FEATURE_INSN(ASE_LMMI, HWCAP_LOONGSON_MMI);
> +    GET_FEATURE_INSN(ASE_LEXT, HWCAP_LOONGSON_EXT);
>
>      return hwcaps;
>  }
> --
> 2.26.2
>
>


-- 
Huacai Chen