Commit 5938f20c authored by David Hildenbrand's avatar David Hildenbrand
Browse files

s390x/tcg: Implement VECTOR FP SQUARE ROOT 



Simulate XxC=0 and ERM=0 (current mode), so we can use the existing
helper function.

Reviewed-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: default avatarDavid Hildenbrand <david@redhat.com>
parent 76e35cc7

target/s390x/helper.h

+2 −0
Original line number Diff line number Diff line
@@ -288,6 +288,8 @@ DEF_HELPER_FLAGS_6(gvec_vfma64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env 
DEF_HELPER_FLAGS_6(gvec_vfma64s, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32)

DEF_HELPER_FLAGS_6(gvec_vfms64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32)

DEF_HELPER_FLAGS_6(gvec_vfms64s, TCG_CALL_NO_WG, void, ptr, cptr, cptr, cptr, env, i32)

DEF_HELPER_FLAGS_4(gvec_vfsq64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)

DEF_HELPER_FLAGS_4(gvec_vfsq64s, TCG_CALL_NO_WG, void, ptr, cptr, env, i32)



#ifndef CONFIG_USER_ONLY

DEF_HELPER_3(servc, i32, env, i64, i64)

target/s390x/insn-data.def

+2 −0
Original line number Diff line number Diff line
@@ -1242,6 +1242,8 @@ 
    F(0xe78e, VFMS,    VRR_e, V,   0, 0, 0, 0, vfma, 0, IF_VEC)

/* VECTOR FP PERFORM SIGN OPERATION */

    F(0xe7cc, VFPSO,   VRR_a, V,   0, 0, 0, 0, vfpso, 0, IF_VEC)

/* VECTOR FP SQUARE ROOT */

    F(0xe7ce, VFSQ,    VRR_a, V,   0, 0, 0, 0, vfsq, 0, IF_VEC)



#ifndef CONFIG_USER_ONLY

/* COMPARE AND SWAP AND PURGE */

target/s390x/translate_vx.inc.c

+19 −0
Original line number Diff line number Diff line
@@ -2779,3 +2779,22 @@ static DisasJumpType op_vfpso(DisasContext *s, DisasOps *o) 
    }

    return DISAS_NEXT;

}



static DisasJumpType op_vfsq(DisasContext *s, DisasOps *o)

{

    const uint8_t fpf = get_field(s->fields, m3);

    const uint8_t m4 = get_field(s->fields, m4);

    gen_helper_gvec_2_ptr *fn = gen_helper_gvec_vfsq64;



    if (fpf != FPF_LONG || extract32(m4, 0, 3)) {

        gen_program_exception(s, PGM_SPECIFICATION);

        return DISAS_NORETURN;

    }



    if (extract32(m4, 3, 1)) {

        fn = gen_helper_gvec_vfsq64s;

    }

    gen_gvec_2_ptr(get_field(s->fields, v1), get_field(s->fields, v2), cpu_env,

                   0, fn);

    return DISAS_NEXT;

}

target/s390x/vec_fpu_helper.c

+17 −0
Original line number Diff line number Diff line
@@ -552,3 +552,20 @@ void HELPER(gvec_vfms64s)(void *v1, const void *v2, const void *v3, 
{

    vfma64(v1, v2, v3, v4, env, true, float_muladd_negate_c, GETPC());

}



static uint64_t vfsq64(uint64_t a, float_status *s)

{

    return float64_sqrt(a, s);

}



void HELPER(gvec_vfsq64)(void *v1, const void *v2, CPUS390XState *env,

                         uint32_t desc)

{

    vop64_2(v1, v2, env, false, false, 0, vfsq64, GETPC());

}



void HELPER(gvec_vfsq64s)(void *v1, const void *v2, CPUS390XState *env,

                          uint32_t desc)

{

    vop64_2(v1, v2, env, true, false, 0, vfsq64, GETPC());

}