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s390x/tcg: Implement MULTIPLY (MG, MGRK)

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Multiply two signed 64bit values and store the 128bit result in r1 (0-63)
and r1 + 1 (64-127).

Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200928122717.30586-5-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2020-09-28 14:27:12 +02:00 committed by Cornelia Huck
parent 3c3ea1afae
commit fa5e82ccb4
2 changed files with 15 additions and 0 deletions
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2
target/s390x/insn-data.def
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@ -653,8 +653,10 @@
/* MULTIPLY */
C(0x1c00, MR, RR_a, Z, r1p1_32s, r2_32s, new, r1_D32, mul, 0)
C(0xb9ec, MGRK, RRF_a, MIE2,r3_o, r2_o, r1_P, 0, muls128, 0)
C(0x5c00, M, RX_a, Z, r1p1_32s, m2_32s, new, r1_D32, mul, 0)
C(0xe35c, MFY, RXY_a, GIE, r1p1_32s, m2_32s, new, r1_D32, mul, 0)
C(0xe384, MG, RXY_a, MIE2,r1p1_o, m2_64, r1_P, 0, muls128, 0)
F(0xb317, MEEBR, RRE, Z, e1, e2, new, e1, meeb, 0, IF_BFP)
F(0xb31c, MDBR, RRE, Z, f1, f2, new, f1, mdb, 0, IF_BFP)
F(0xb34c, MXBR, RRE, Z, x2h, x2l, x1, x1, mxb, 0, IF_BFP)

13
target/s390x/translate.c
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@ -3539,6 +3539,12 @@ static DisasJumpType op_mul128(DisasContext *s, DisasOps *o)
return DISAS_NEXT;
}
static DisasJumpType op_muls128(DisasContext *s, DisasOps *o)
{
tcg_gen_muls2_i64(o->out2, o->out, o->in1, o->in2);
return DISAS_NEXT;
}
static DisasJumpType op_meeb(DisasContext *s, DisasOps *o)
{
gen_helper_meeb(o->out, cpu_env, o->in1, o->in2);
@ -5563,6 +5569,13 @@ static void in1_r1p1(DisasContext *s, DisasOps *o)
}
#define SPEC_in1_r1p1 SPEC_r1_even
static void in1_r1p1_o(DisasContext *s, DisasOps *o)
{
o->in1 = regs[get_field(s, r1) + 1];
o->g_in1 = true;
}
#define SPEC_in1_r1p1_o SPEC_r1_even
static void in1_r1p1_32s(DisasContext *s, DisasOps *o)
{
o->in1 = tcg_temp_new_i64();