From 3277d955d21d8943d80062b4cfd8547f831dbd51 Mon Sep 17 00:00:00 2001 From: LIU Zhiwei Date: Wed, 1 Jul 2020 23:25:02 +0800 Subject: [PATCH] target/riscv: vector single-width bit shift instructions Signed-off-by: LIU Zhiwei Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis Message-Id: <20200701152549.1218-15-zhiwei_liu@c-sky.com> Signed-off-by: Alistair Francis --- target/riscv/helper.h | 25 ++++++++ target/riscv/insn32.decode | 9 +++ target/riscv/insn_trans/trans_rvv.inc.c | 52 ++++++++++++++++ target/riscv/vector_helper.c | 79 +++++++++++++++++++++++++ 4 files changed, 165 insertions(+) diff --git a/target/riscv/helper.h b/target/riscv/helper.h index f8b1c8a800..6805bf7dbd 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -407,3 +407,28 @@ DEF_HELPER_6(vxor_vx_b, void, ptr, ptr, tl, ptr, env, i32) DEF_HELPER_6(vxor_vx_h, void, ptr, ptr, tl, ptr, env, i32) DEF_HELPER_6(vxor_vx_w, void, ptr, ptr, tl, ptr, env, i32) DEF_HELPER_6(vxor_vx_d, void, ptr, ptr, tl, ptr, env, i32) + +DEF_HELPER_6(vsll_vv_b, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsll_vv_h, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsll_vv_w, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsll_vv_d, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsrl_vv_b, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsrl_vv_h, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsrl_vv_w, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsrl_vv_d, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsra_vv_b, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsra_vv_h, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsra_vv_w, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsra_vv_d, void, ptr, ptr, ptr, ptr, env, i32) +DEF_HELPER_6(vsll_vx_b, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsll_vx_h, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsll_vx_w, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsll_vx_d, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsrl_vx_b, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsrl_vx_h, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsrl_vx_w, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsrl_vx_d, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsra_vx_b, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsra_vx_h, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsra_vx_w, void, ptr, ptr, tl, ptr, env, i32) +DEF_HELPER_6(vsra_vx_d, void, ptr, ptr, tl, ptr, env, i32) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 34d05a5917..e5334230df 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -322,6 +322,15 @@ vor_vi 001010 . ..... ..... 011 ..... 1010111 @r_vm vxor_vv 001011 . ..... ..... 000 ..... 1010111 @r_vm vxor_vx 001011 . ..... ..... 100 ..... 1010111 @r_vm vxor_vi 001011 . ..... ..... 011 ..... 1010111 @r_vm +vsll_vv 100101 . ..... ..... 000 ..... 1010111 @r_vm +vsll_vx 100101 . ..... ..... 100 ..... 1010111 @r_vm +vsll_vi 100101 . ..... ..... 011 ..... 1010111 @r_vm +vsrl_vv 101000 . ..... ..... 000 ..... 1010111 @r_vm +vsrl_vx 101000 . ..... ..... 100 ..... 1010111 @r_vm +vsrl_vi 101000 . ..... ..... 011 ..... 1010111 @r_vm +vsra_vv 101001 . ..... ..... 000 ..... 1010111 @r_vm +vsra_vx 101001 . ..... ..... 100 ..... 1010111 @r_vm +vsra_vi 101001 . ..... ..... 011 ..... 1010111 @r_vm vsetvli 0 ........... ..... 111 ..... 1010111 @r2_zimm vsetvl 1000000 ..... ..... 111 ..... 1010111 @r diff --git a/target/riscv/insn_trans/trans_rvv.inc.c b/target/riscv/insn_trans/trans_rvv.inc.c index 1552534796..d2dbf701c8 100644 --- a/target/riscv/insn_trans/trans_rvv.inc.c +++ b/target/riscv/insn_trans/trans_rvv.inc.c @@ -1373,3 +1373,55 @@ GEN_OPIVX_GVEC_TRANS(vxor_vx, xors) GEN_OPIVI_GVEC_TRANS(vand_vi, 0, vand_vx, andi) GEN_OPIVI_GVEC_TRANS(vor_vi, 0, vor_vx, ori) GEN_OPIVI_GVEC_TRANS(vxor_vi, 0, vxor_vx, xori) + +/* Vector Single-Width Bit Shift Instructions */ +GEN_OPIVV_GVEC_TRANS(vsll_vv, shlv) +GEN_OPIVV_GVEC_TRANS(vsrl_vv, shrv) +GEN_OPIVV_GVEC_TRANS(vsra_vv, sarv) + +typedef void GVecGen2sFn32(unsigned, uint32_t, uint32_t, TCGv_i32, + uint32_t, uint32_t); + +static inline bool +do_opivx_gvec_shift(DisasContext *s, arg_rmrr *a, GVecGen2sFn32 *gvec_fn, + gen_helper_opivx *fn) +{ + if (!opivx_check(s, a)) { + return false; + } + + if (a->vm && s->vl_eq_vlmax) { + TCGv_i32 src1 = tcg_temp_new_i32(); + TCGv tmp = tcg_temp_new(); + + gen_get_gpr(tmp, a->rs1); + tcg_gen_trunc_tl_i32(src1, tmp); + tcg_gen_extract_i32(src1, src1, 0, s->sew + 3); + gvec_fn(s->sew, vreg_ofs(s, a->rd), vreg_ofs(s, a->rs2), + src1, MAXSZ(s), MAXSZ(s)); + + tcg_temp_free_i32(src1); + tcg_temp_free(tmp); + return true; + } + return opivx_trans(a->rd, a->rs1, a->rs2, a->vm, fn, s); +} + +#define GEN_OPIVX_GVEC_SHIFT_TRANS(NAME, SUF) \ +static bool trans_##NAME(DisasContext *s, arg_rmrr *a) \ +{ \ + static gen_helper_opivx * const fns[4] = { \ + gen_helper_##NAME##_b, gen_helper_##NAME##_h, \ + gen_helper_##NAME##_w, gen_helper_##NAME##_d, \ + }; \ + \ + return do_opivx_gvec_shift(s, a, tcg_gen_gvec_##SUF, fns[s->sew]); \ +} + +GEN_OPIVX_GVEC_SHIFT_TRANS(vsll_vx, shls) +GEN_OPIVX_GVEC_SHIFT_TRANS(vsrl_vx, shrs) +GEN_OPIVX_GVEC_SHIFT_TRANS(vsra_vx, sars) + +GEN_OPIVI_GVEC_TRANS(vsll_vi, 1, vsll_vx, shli) +GEN_OPIVI_GVEC_TRANS(vsrl_vi, 1, vsrl_vx, shri) +GEN_OPIVI_GVEC_TRANS(vsra_vi, 1, vsra_vx, sari) diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index bd77de110e..cd81f86faf 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -1316,3 +1316,82 @@ GEN_VEXT_VX(vxor_vx_b, 1, 1, clearb) GEN_VEXT_VX(vxor_vx_h, 2, 2, clearh) GEN_VEXT_VX(vxor_vx_w, 4, 4, clearl) GEN_VEXT_VX(vxor_vx_d, 8, 8, clearq) + +/* Vector Single-Width Bit Shift Instructions */ +#define DO_SLL(N, M) (N << (M)) +#define DO_SRL(N, M) (N >> (M)) + +/* generate the helpers for shift instructions with two vector operators */ +#define GEN_VEXT_SHIFT_VV(NAME, TS1, TS2, HS1, HS2, OP, MASK, CLEAR_FN) \ +void HELPER(NAME)(void *vd, void *v0, void *vs1, \ + void *vs2, CPURISCVState *env, uint32_t desc) \ +{ \ + uint32_t mlen = vext_mlen(desc); \ + uint32_t vm = vext_vm(desc); \ + uint32_t vl = env->vl; \ + uint32_t esz = sizeof(TS1); \ + uint32_t vlmax = vext_maxsz(desc) / esz; \ + uint32_t i; \ + \ + for (i = 0; i < vl; i++) { \ + if (!vm && !vext_elem_mask(v0, mlen, i)) { \ + continue; \ + } \ + TS1 s1 = *((TS1 *)vs1 + HS1(i)); \ + TS2 s2 = *((TS2 *)vs2 + HS2(i)); \ + *((TS1 *)vd + HS1(i)) = OP(s2, s1 & MASK); \ + } \ + CLEAR_FN(vd, vl, vl * esz, vlmax * esz); \ +} + +GEN_VEXT_SHIFT_VV(vsll_vv_b, uint8_t, uint8_t, H1, H1, DO_SLL, 0x7, clearb) +GEN_VEXT_SHIFT_VV(vsll_vv_h, uint16_t, uint16_t, H2, H2, DO_SLL, 0xf, clearh) +GEN_VEXT_SHIFT_VV(vsll_vv_w, uint32_t, uint32_t, H4, H4, DO_SLL, 0x1f, clearl) +GEN_VEXT_SHIFT_VV(vsll_vv_d, uint64_t, uint64_t, H8, H8, DO_SLL, 0x3f, clearq) + +GEN_VEXT_SHIFT_VV(vsrl_vv_b, uint8_t, uint8_t, H1, H1, DO_SRL, 0x7, clearb) +GEN_VEXT_SHIFT_VV(vsrl_vv_h, uint16_t, uint16_t, H2, H2, DO_SRL, 0xf, clearh) +GEN_VEXT_SHIFT_VV(vsrl_vv_w, uint32_t, uint32_t, H4, H4, DO_SRL, 0x1f, clearl) +GEN_VEXT_SHIFT_VV(vsrl_vv_d, uint64_t, uint64_t, H8, H8, DO_SRL, 0x3f, clearq) + +GEN_VEXT_SHIFT_VV(vsra_vv_b, uint8_t, int8_t, H1, H1, DO_SRL, 0x7, clearb) +GEN_VEXT_SHIFT_VV(vsra_vv_h, uint16_t, int16_t, H2, H2, DO_SRL, 0xf, clearh) +GEN_VEXT_SHIFT_VV(vsra_vv_w, uint32_t, int32_t, H4, H4, DO_SRL, 0x1f, clearl) +GEN_VEXT_SHIFT_VV(vsra_vv_d, uint64_t, int64_t, H8, H8, DO_SRL, 0x3f, clearq) + +/* generate the helpers for shift instructions with one vector and one scalar */ +#define GEN_VEXT_SHIFT_VX(NAME, TD, TS2, HD, HS2, OP, MASK, CLEAR_FN) \ +void HELPER(NAME)(void *vd, void *v0, target_ulong s1, \ + void *vs2, CPURISCVState *env, uint32_t desc) \ +{ \ + uint32_t mlen = vext_mlen(desc); \ + uint32_t vm = vext_vm(desc); \ + uint32_t vl = env->vl; \ + uint32_t esz = sizeof(TD); \ + uint32_t vlmax = vext_maxsz(desc) / esz; \ + uint32_t i; \ + \ + for (i = 0; i < vl; i++) { \ + if (!vm && !vext_elem_mask(v0, mlen, i)) { \ + continue; \ + } \ + TS2 s2 = *((TS2 *)vs2 + HS2(i)); \ + *((TD *)vd + HD(i)) = OP(s2, s1 & MASK); \ + } \ + CLEAR_FN(vd, vl, vl * esz, vlmax * esz); \ +} + +GEN_VEXT_SHIFT_VX(vsll_vx_b, uint8_t, int8_t, H1, H1, DO_SLL, 0x7, clearb) +GEN_VEXT_SHIFT_VX(vsll_vx_h, uint16_t, int16_t, H2, H2, DO_SLL, 0xf, clearh) +GEN_VEXT_SHIFT_VX(vsll_vx_w, uint32_t, int32_t, H4, H4, DO_SLL, 0x1f, clearl) +GEN_VEXT_SHIFT_VX(vsll_vx_d, uint64_t, int64_t, H8, H8, DO_SLL, 0x3f, clearq) + +GEN_VEXT_SHIFT_VX(vsrl_vx_b, uint8_t, uint8_t, H1, H1, DO_SRL, 0x7, clearb) +GEN_VEXT_SHIFT_VX(vsrl_vx_h, uint16_t, uint16_t, H2, H2, DO_SRL, 0xf, clearh) +GEN_VEXT_SHIFT_VX(vsrl_vx_w, uint32_t, uint32_t, H4, H4, DO_SRL, 0x1f, clearl) +GEN_VEXT_SHIFT_VX(vsrl_vx_d, uint64_t, uint64_t, H8, H8, DO_SRL, 0x3f, clearq) + +GEN_VEXT_SHIFT_VX(vsra_vx_b, int8_t, int8_t, H1, H1, DO_SRL, 0x7, clearb) +GEN_VEXT_SHIFT_VX(vsra_vx_h, int16_t, int16_t, H2, H2, DO_SRL, 0xf, clearh) +GEN_VEXT_SHIFT_VX(vsra_vx_w, int32_t, int32_t, H4, H4, DO_SRL, 0x1f, clearl) +GEN_VEXT_SHIFT_VX(vsra_vx_d, int64_t, int64_t, H8, H8, DO_SRL, 0x3f, clearq)