Commit 1882651a authored by Peter Maydell's avatar Peter Maydell
Browse files

target/arm: Convert VNEG to decodetree 



Convert the VNEG instruction to decodetree.

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: default avatarRichard Henderson <richard.henderson@linaro.org>
parent 90287e22

target/arm/translate-vfp.inc.c

+10 −0
Original line number Diff line number Diff line
@@ -1898,3 +1898,13 @@ static bool trans_VABS_dp(DisasContext *s, arg_VABS_dp *a) 
{

    return do_vfp_2op_dp(s, gen_helper_vfp_absd, a->vd, a->vm);

}



static bool trans_VNEG_sp(DisasContext *s, arg_VNEG_sp *a)

{

    return do_vfp_2op_sp(s, gen_helper_vfp_negs, a->vd, a->vm);

}



static bool trans_VNEG_dp(DisasContext *s, arg_VNEG_dp *a)

{

    return do_vfp_2op_dp(s, gen_helper_vfp_negd, a->vd, a->vm);

}

target/arm/translate.c

+1 −5
Original line number Diff line number Diff line
@@ -3098,7 +3098,7 @@ static int disas_vfp_insn(DisasContext *s, uint32_t insn) 
                return 1;

            case 15:

                switch (rn) {

                case 1:

                case 1 ... 2:

                    /* Already handled by decodetree */

                    return 1;

                default:
@@ -3112,7 +3112,6 @@ static int disas_vfp_insn(DisasContext *s, uint32_t insn) 
                /* rn is opcode, encoded as per VFP_SREG_N. */

                switch (rn) {

                case 0x00: /* vmov */

                case 0x02: /* vneg */

                case 0x03: /* vsqrt */

                    break;
@@ -3291,9 +3290,6 @@ static int disas_vfp_insn(DisasContext *s, uint32_t insn) 
                    case 0: /* cpy */

                        /* no-op */

                        break;

                    case 2: /* neg */

                        gen_vfp_neg(dp);

                        break;

                    case 3: /* sqrt */

                        gen_vfp_sqrt(dp);

                        break;

target/arm/vfp.decode

+5 −0
Original line number Diff line number Diff line
@@ -161,3 +161,8 @@ VABS_sp ---- 1110 1.11 0000 .... 1010 11.0 .... \ 
             vd=%vd_sp vm=%vm_sp

VABS_dp      ---- 1110 1.11 0000 .... 1011 11.0 .... \

             vd=%vd_dp vm=%vm_dp



VNEG_sp      ---- 1110 1.11 0001 .... 1010 01.0 .... \

             vd=%vd_sp vm=%vm_sp

VNEG_dp      ---- 1110 1.11 0001 .... 1011 01.0 .... \

             vd=%vd_dp vm=%vm_dp