From: Matheus Ferst <matheus.fe...@eldorado.org.br> Signed-off-by: Matheus Ferst <matheus.fe...@eldorado.org.br> --- target/ppc/helper.h | 1 + target/ppc/insn64.decode | 8 ++ target/ppc/int_helper.c | 42 ++++++++++ target/ppc/translate/vsx-impl.c.inc | 121 ++++++++++++++++++++++++++++ 4 files changed, 172 insertions(+)
diff --git a/target/ppc/helper.h b/target/ppc/helper.h index 2a4cd89643..4cf8e0747d 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -505,6 +505,7 @@ DEF_HELPER_4(xxextractuw, void, env, vsr, vsr, i32) DEF_HELPER_5(XXPERMX, void, vsr, vsr, vsr, vsr, tl) DEF_HELPER_4(xxinsertw, void, env, vsr, vsr, i32) DEF_HELPER_3(xvxsigsp, void, env, vsr, vsr) +DEF_HELPER_5(XXEVAL, void, vsr, vsr, vsr, vsr, i32) DEF_HELPER_5(XXBLENDVB, void, vsr, vsr, vsr, vsr, i32) DEF_HELPER_5(XXBLENDVH, void, vsr, vsr, vsr, vsr, i32) DEF_HELPER_5(XXBLENDVW, void, vsr, vsr, vsr, vsr, i32) diff --git a/target/ppc/insn64.decode b/target/ppc/insn64.decode index 0963e064b1..fdb859f62d 100644 --- a/target/ppc/insn64.decode +++ b/target/ppc/insn64.decode @@ -54,6 +54,11 @@ ...... ..... ..... ..... ..... .. .... \ &8RR_XX4 xt=%8rr_xx_xt xa=%8rr_xx_xa xb=%8rr_xx_xb xc=%8rr_xx_xc +&8RR_XX4_imm xt xa xb xc imm +@8RR_XX4_imm ........ ........ ........ imm:8 \ + ...... ..... ..... ..... ..... .. .... \ + &8RR_XX4_imm xt=%8rr_xx_xt xa=%8rr_xx_xa xb=%8rr_xx_xb xc=%8rr_xx_xc + &8RR_XX4_uim3 xt xa xb xc uim3 @8RR_XX4_uim3 ...... .. .... .. ............... uim3:3 \ ...... ..... ..... ..... ..... .. .... \ @@ -184,6 +189,9 @@ PLXVP 000001 00 0--.-- .................. \ PSTXVP 000001 00 0--.-- .................. \ 111110 ..... ..... ................ @8LS_D_TSXP +XXEVAL 000001 01 0000 -- ---------- ........ \ + 100010 ..... ..... ..... ..... 01 .... @8RR_XX4_imm + XXSPLTIDP 000001 01 0000 -- -- ................ \ 100000 ..... 0010 . ................ @8RR_D XXSPLTIW 000001 01 0000 -- -- ................ \ diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index 27739400e4..7e26d68f53 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -28,6 +28,7 @@ #include "fpu/softfloat.h" #include "qapi/error.h" #include "qemu/guest-random.h" +#include "tcg/tcg-gvec-desc.h" #include "helper_regs.h" /*****************************************************************************/ @@ -1714,6 +1715,47 @@ void helper_xxinsertw(CPUPPCState *env, ppc_vsr_t *xt, *xt = t; } +void helper_XXEVAL(ppc_avr_t *t, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c, + uint32_t desc) +{ + /* + * Instead of processing imm bit-by-bit, we'll skip the computation of + * conjunctions whose corresponding bit is unset. + */ + int bit, imm = simd_data(desc); + Int128 conj, disj = int128_zero(); + + /* Iterate over set bits from the least to the most significant bit */ + while (imm) { + /* + * Get the next bit to be processed with ctz64. Invert the result of + * ctz64 to match the indexing used by PowerISA. + */ + bit = 7 - ctzl(imm); + if (bit & 0x4) { + conj = a->s128; + } else { + conj = int128_not(a->s128); + } + if (bit & 0x2) { + conj = int128_and(conj, b->s128); + } else { + conj = int128_and(conj, int128_not(b->s128)); + } + if (bit & 0x1) { + conj = int128_and(conj, c->s128); + } else { + conj = int128_and(conj, int128_not(c->s128)); + } + disj = int128_or(disj, conj); + + /* Unset the least significant bit that is set */ + imm &= imm - 1; + } + + t->s128 = disj; +} + #define XXBLEND(name, sz) \ void glue(helper_XXBLENDV, name)(ppc_avr_t *t, ppc_avr_t *a, ppc_avr_t *b, \ ppc_avr_t *c, uint32_t desc) \ diff --git a/target/ppc/translate/vsx-impl.c.inc b/target/ppc/translate/vsx-impl.c.inc index 4ac4399235..d070daf435 100644 --- a/target/ppc/translate/vsx-impl.c.inc +++ b/target/ppc/translate/vsx-impl.c.inc @@ -2165,6 +2165,127 @@ TRANS64_FLAGS2(ISA310, PLXV, do_lstxv_PLS_D, false, false) TRANS64_FLAGS2(ISA310, PSTXVP, do_lstxv_PLS_D, true, true) TRANS64_FLAGS2(ISA310, PLXVP, do_lstxv_PLS_D, false, true) +static void gen_xxeval_i64(TCGv_i64 t, TCGv_i64 a, TCGv_i64 b, TCGv_i64 c, + int64_t imm) +{ + /* + * Instead of processing imm bit-by-bit, we'll skip the computation of + * conjunctions whose corresponding bit is unset. + */ + int bit; + TCGv_i64 conj, disj; + + conj = tcg_temp_new_i64(); + disj = tcg_temp_new_i64(); + + tcg_gen_movi_i64(disj, 0); + + /* Iterate over set bits from the least to the most significant bit */ + while (imm) { + /* + * Get the next bit to be processed with ctz64. Invert the result of + * ctz64 to match the indexing used by PowerISA. + */ + bit = 7 - ctz64(imm); + if (bit & 0x4) { + tcg_gen_mov_i64(conj, a); + } else { + tcg_gen_not_i64(conj, a); + } + if (bit & 0x2) { + tcg_gen_and_i64(conj, conj, b); + } else { + tcg_gen_andc_i64(conj, conj, b); + } + if (bit & 0x1) { + tcg_gen_and_i64(conj, conj, c); + } else { + tcg_gen_andc_i64(conj, conj, c); + } + tcg_gen_or_i64(disj, disj, conj); + + /* Unset the least significant bit that is set */ + imm &= imm - 1; + } + + tcg_gen_mov_i64(t, disj); + + tcg_temp_free_i64(conj); + tcg_temp_free_i64(disj); +} + +static void gen_xxeval_vec(unsigned vece, TCGv_vec t, TCGv_vec a, TCGv_vec b, + TCGv_vec c, int64_t imm) +{ + /* + * Instead of processing imm bit-by-bit, we'll skip the computation of + * conjunctions whose corresponding bit is unset. + */ + int bit; + TCGv_vec disj, conj; + + disj = tcg_temp_new_vec_matching(t); + conj = tcg_temp_new_vec_matching(t); + + tcg_gen_dupi_vec(vece, disj, 0); + + /* Iterate over set bits from the least to the most significant bit */ + while (imm) { + /* + * Get the next bit to be processed with ctz64. Invert the result of + * ctz64 to match the indexing used by PowerISA. + */ + bit = 7 - ctz64(imm); + if (bit & 0x4) { + tcg_gen_mov_vec(conj, a); + } else { + tcg_gen_not_vec(vece, conj, a); + } + if (bit & 0x2) { + tcg_gen_and_vec(vece, conj, conj, b); + } else { + tcg_gen_andc_vec(vece, conj, conj, b); + } + if (bit & 0x1) { + tcg_gen_and_vec(vece, conj, conj, c); + } else { + tcg_gen_andc_vec(vece, conj, conj, c); + } + tcg_gen_or_vec(vece, disj, disj, conj); + + /* Unset the least significant bit that is set */ + imm &= imm - 1; + } + + tcg_gen_mov_vec(t, disj); + + tcg_temp_free_vec(disj); + tcg_temp_free_vec(conj); +} + +static bool trans_XXEVAL(DisasContext *ctx, arg_8RR_XX4_imm *a) +{ + REQUIRE_INSNS_FLAGS2(ctx, ISA310); + REQUIRE_VSX(ctx); + + static const TCGOpcode vecop_list[] = { + INDEX_op_andc_vec, 0 + }; + static const GVecGen4i op = { + .fniv = gen_xxeval_vec, + .fno = gen_helper_XXEVAL, + .fni8 = gen_xxeval_i64, + .opt_opc = vecop_list, + .vece = MO_64 + }; + + tcg_gen_gvec_4i(vsr_full_offset(a->xt), vsr_full_offset(a->xa), + vsr_full_offset(a->xb), vsr_full_offset(a->xc), + 16, 16, a->imm, &op); + + return true; +} + static void gen_xxblendv_vec(unsigned vece, TCGv_vec t, TCGv_vec a, TCGv_vec b, TCGv_vec c) { -- 2.25.1