Commit 42fedbca authored by Richard Henderson's avatar Richard Henderson
Browse files

target-arm: Use new revbit functions 



Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarRichard Henderson <rth@twiddle.net>
parent 652a4b7e

target-arm/helper-a64.c

+1 −14
Original line number Diff line number Diff line
@@ -70,20 +70,7 @@ uint32_t HELPER(clz32)(uint32_t x) 


uint64_t HELPER(rbit64)(uint64_t x)

{

    /* assign the correct byte position */

    x = bswap64(x);



    /* assign the correct nibble position */

    x = ((x & 0xf0f0f0f0f0f0f0f0ULL) >> 4)

        | ((x & 0x0f0f0f0f0f0f0f0fULL) << 4);



    /* assign the correct bit position */

    x = ((x & 0x8888888888888888ULL) >> 3)

        | ((x & 0x4444444444444444ULL) >> 1)

        | ((x & 0x2222222222222222ULL) << 1)

        | ((x & 0x1111111111111111ULL) << 3);



    return x;

    return revbit64(x);

}



/* Convert a softfloat float_relation_ (as returned by

target-arm/helper.c

+1 −11
Original line number Diff line number Diff line
@@ -5044,17 +5044,7 @@ uint32_t HELPER(udiv)(uint32_t num, uint32_t den) 


uint32_t HELPER(rbit)(uint32_t x)

{

    x =  ((x & 0xff000000) >> 24)

       | ((x & 0x00ff0000) >> 8)

       | ((x & 0x0000ff00) << 8)

       | ((x & 0x000000ff) << 24);

    x =  ((x & 0xf0f0f0f0) >> 4)

       | ((x & 0x0f0f0f0f) << 4);

    x =  ((x & 0x88888888) >> 3)

       | ((x & 0x44444444) >> 1)

       | ((x & 0x22222222) << 1)

       | ((x & 0x11111111) << 3);

    return x;

    return revbit32(x);

}



#if defined(CONFIG_USER_ONLY)