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target/ppc: Implement Vector Mask Move insns

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Implement the following PowerISA v3.1 instructions:
mtvsrbm: Move to VSR Byte Mask
mtvsrhm: Move to VSR Halfword Mask
mtvsrwm: Move to VSR Word Mask
mtvsrdm: Move to VSR Doubleword Mask
mtvsrqm: Move to VSR Quadword Mask
mtvsrbmi: Move to VSR Byte Mask Immediate

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20211203194229.746275-4-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 17868d81e0
commit 9193eaa901
2 changed files with 126 additions and 0 deletions
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11
target/ppc/insn32.decode
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@ -40,6 +40,10 @@
%ds_rtp 22:4 !function=times_2
@DS_rtp ...... ....0 ra:5 .............. .. &D rt=%ds_rtp si=%ds_si
&DX_b vrt b
%dx_b 6:10 16:5 0:1
@DX_b ...... vrt:5 ..... .......... ..... . &DX_b b=%dx_b
&DX rt d
%dx_d 6:s10 16:5 0:1
@DX ...... rt:5 ..... .......... ..... . &DX d=%dx_d
@ -413,6 +417,13 @@ VSRDBI 000100 ..... ..... ..... 01 ... 010110 @VN
## Vector Mask Manipulation Instructions
MTVSRBM 000100 ..... 10000 ..... 11001000010 @VX_tb
MTVSRHM 000100 ..... 10001 ..... 11001000010 @VX_tb
MTVSRWM 000100 ..... 10010 ..... 11001000010 @VX_tb
MTVSRDM 000100 ..... 10011 ..... 11001000010 @VX_tb
MTVSRQM 000100 ..... 10100 ..... 11001000010 @VX_tb
MTVSRBMI 000100 ..... ..... .......... 01010 . @DX_b
VEXPANDBM 000100 ..... 00000 ..... 11001000010 @VX_tb
VEXPANDHM 000100 ..... 00001 ..... 11001000010 @VX_tb
VEXPANDWM 000100 ..... 00010 ..... 11001000010 @VX_tb

115
target/ppc/translate/vmx-impl.c.inc
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@ -1607,6 +1607,121 @@ static bool trans_VEXTRACTQM(DisasContext *ctx, arg_VX_tb *a)
return true;
}
static bool do_mtvsrm(DisasContext *ctx, arg_VX_tb *a, unsigned vece)
{
const uint64_t elem_width = 8 << vece, elem_count_half = 8 >> vece;
uint64_t c;
int i, j;
TCGv_i64 hi, lo, t0, t1;
REQUIRE_INSNS_FLAGS2(ctx, ISA310);
REQUIRE_VECTOR(ctx);
hi = tcg_temp_new_i64();
lo = tcg_temp_new_i64();
t0 = tcg_temp_new_i64();
t1 = tcg_temp_new_i64();
tcg_gen_extu_tl_i64(t0, cpu_gpr[a->vrb]);
tcg_gen_extract_i64(hi, t0, elem_count_half, elem_count_half);
tcg_gen_extract_i64(lo, t0, 0, elem_count_half);
/*
* Spread the bits into their respective elements.
* E.g. for bytes:
* 00000000000000000000000000000000000000000000000000000000abcdefgh
* << 32 - 4
* 0000000000000000000000000000abcdefgh0000000000000000000000000000
* |
* 0000000000000000000000000000abcdefgh00000000000000000000abcdefgh
* << 16 - 2
* 00000000000000abcdefgh00000000000000000000abcdefgh00000000000000
* |
* 00000000000000abcdefgh000000abcdefgh000000abcdefgh000000abcdefgh
* << 8 - 1
* 0000000abcdefgh000000abcdefgh000000abcdefgh000000abcdefgh0000000
* |
* 0000000abcdefgXbcdefgXbcdefgXbcdefgXbcdefgXbcdefgXbcdefgXbcdefgh
* & dup(1)
* 0000000a0000000b0000000c0000000d0000000e0000000f0000000g0000000h
* * 0xff
* aaaaaaaabbbbbbbbccccccccddddddddeeeeeeeeffffffffgggggggghhhhhhhh
*/
for (i = elem_count_half / 2, j = 32; i > 0; i >>= 1, j >>= 1) {
tcg_gen_shli_i64(t0, hi, j - i);
tcg_gen_shli_i64(t1, lo, j - i);
tcg_gen_or_i64(hi, hi, t0);
tcg_gen_or_i64(lo, lo, t1);
}
c = dup_const(vece, 1);
tcg_gen_andi_i64(hi, hi, c);
tcg_gen_andi_i64(lo, lo, c);
c = MAKE_64BIT_MASK(0, elem_width);
tcg_gen_muli_i64(hi, hi, c);
tcg_gen_muli_i64(lo, lo, c);
set_avr64(a->vrt, lo, false);
set_avr64(a->vrt, hi, true);
tcg_temp_free_i64(hi);
tcg_temp_free_i64(lo);
tcg_temp_free_i64(t0);
tcg_temp_free_i64(t1);
return true;
}
TRANS(MTVSRBM, do_mtvsrm, MO_8)
TRANS(MTVSRHM, do_mtvsrm, MO_16)
TRANS(MTVSRWM, do_mtvsrm, MO_32)
TRANS(MTVSRDM, do_mtvsrm, MO_64)
static bool trans_MTVSRQM(DisasContext *ctx, arg_VX_tb *a)
{
TCGv_i64 tmp;
REQUIRE_INSNS_FLAGS2(ctx, ISA310);
REQUIRE_VECTOR(ctx);
tmp = tcg_temp_new_i64();
tcg_gen_ext_tl_i64(tmp, cpu_gpr[a->vrb]);
tcg_gen_sextract_i64(tmp, tmp, 0, 1);
set_avr64(a->vrt, tmp, false);
set_avr64(a->vrt, tmp, true);
tcg_temp_free_i64(tmp);
return true;
}
static bool trans_MTVSRBMI(DisasContext *ctx, arg_DX_b *a)
{
const uint64_t mask = dup_const(MO_8, 1);
uint64_t hi, lo;
REQUIRE_INSNS_FLAGS2(ctx, ISA310);
REQUIRE_VECTOR(ctx);
hi = extract16(a->b, 8, 8);
lo = extract16(a->b, 0, 8);
for (int i = 4, j = 32; i > 0; i >>= 1, j >>= 1) {
hi |= hi << (j - i);
lo |= lo << (j - i);
}
hi = (hi & mask) * 0xFF;
lo = (lo & mask) * 0xFF;
set_avr64(a->vrt, tcg_constant_i64(hi), true);
set_avr64(a->vrt, tcg_constant_i64(lo), false);
return true;
}
#define GEN_VAFORM_PAIRED(name0, name1, opc2) \
static void glue(gen_, name0##_##name1)(DisasContext *ctx) \
{ \