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target/ppc: Implement Vector Expand Mask 

Implement the following PowerISA v3.1 instructions:
vexpandbm: Vector Expand Byte Mask
vexpandhm: Vector Expand Halfword Mask
vexpandwm: Vector Expand Word Mask
vexpanddm: Vector Expand Doubleword Mask
vexpandqm: Vector Expand Quadword Mask

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20211203194229.746275-2-matheus.ferst@eldorado.org.br>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Matheus Ferst 2021-12-17 17:57:13 +01:00 committed by Cédric Le Goater
parent 25ee608d79
commit 5f1470b091
2 changed files with 45 additions and 0 deletions
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11
target/ppc/insn32.decode
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@ -56,6 +56,9 @@
&VX_uim4 vrt uim vrb
@VX_uim4 ...... vrt:5 . uim:4 vrb:5 ........... &VX_uim4
&VX_tb vrt vrb
@VX_tb ...... vrt:5 ..... vrb:5 ........... &VX_tb
&X rt ra rb
@X ...... rt:5 ra:5 rb:5 .......... . &X
@ -408,6 +411,14 @@ VINSWVRX 000100 ..... ..... ..... 00110001111 @VX
VSLDBI 000100 ..... ..... ..... 00 ... 010110 @VN
VSRDBI 000100 ..... ..... ..... 01 ... 010110 @VN
## Vector Mask Manipulation Instructions
VEXPANDBM 000100 ..... 00000 ..... 11001000010 @VX_tb
VEXPANDHM 000100 ..... 00001 ..... 11001000010 @VX_tb
VEXPANDWM 000100 ..... 00010 ..... 11001000010 @VX_tb
VEXPANDDM 000100 ..... 00011 ..... 11001000010 @VX_tb
VEXPANDQM 000100 ..... 00100 ..... 11001000010 @VX_tb
# VSX Load/Store Instructions
LXV 111101 ..... ..... ............ . 001 @DQ_TSX

34
target/ppc/translate/vmx-impl.c.inc
View File

@ -1491,6 +1491,40 @@ static bool trans_VSRDBI(DisasContext *ctx, arg_VN *a)
return true;
}
static bool do_vexpand(DisasContext *ctx, arg_VX_tb *a, unsigned vece)
{
REQUIRE_INSNS_FLAGS2(ctx, ISA310);
REQUIRE_VECTOR(ctx);
tcg_gen_gvec_sari(vece, avr_full_offset(a->vrt), avr_full_offset(a->vrb),
(8 << vece) - 1, 16, 16);
return true;
}
TRANS(VEXPANDBM, do_vexpand, MO_8)
TRANS(VEXPANDHM, do_vexpand, MO_16)
TRANS(VEXPANDWM, do_vexpand, MO_32)
TRANS(VEXPANDDM, do_vexpand, MO_64)
static bool trans_VEXPANDQM(DisasContext *ctx, arg_VX_tb *a)
{
TCGv_i64 tmp;
REQUIRE_INSNS_FLAGS2(ctx, ISA310);
REQUIRE_VECTOR(ctx);
tmp = tcg_temp_new_i64();
get_avr64(tmp, a->vrb, true);
tcg_gen_sari_i64(tmp, tmp, 63);
set_avr64(a->vrt, tmp, false);
set_avr64(a->vrt, tmp, true);
tcg_temp_free_i64(tmp);
return true;
}
#define GEN_VAFORM_PAIRED(name0, name1, opc2) \
static void glue(gen_, name0##_##name1)(DisasContext *ctx) \
{ \