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Received: from localhost.localdomain(mailfrom:zhiwei_liu@c-sky.com fp:SMTPD_---.JYGrQrZ_1613143486) by smtp.aliyun-inc.com(10.147.42.22); Fri, 12 Feb 2021 23:24:46 +0800 From: LIU Zhiwei To: qemu-devel@nongnu.org Subject: [PATCH 10/38] target/riscv: SIMD 16-bit Multiply Instructions Date: Fri, 12 Feb 2021 23:02:28 +0800 Message-Id: <20210212150256.885-11-zhiwei_liu@c-sky.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210212150256.885-1-zhiwei_liu@c-sky.com> References: <20210212150256.885-1-zhiwei_liu@c-sky.com> Received-SPF: none client-ip=121.197.200.217; envelope-from=zhiwei_liu@c-sky.com; helo=smtp2200-217.mail.aliyun.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_NONE=0.001, UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: richard.henderson@linaro.org, LIU Zhiwei , qemu-riscv@nongnu.org, palmer@dabbelt.com, alistair23@gmail.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: LIU Zhiwei --- target/riscv/helper.h | 7 ++ target/riscv/insn32.decode | 7 ++ target/riscv/insn_trans/trans_rvp.c.inc | 53 ++++++++++++ target/riscv/packed_helper.c | 104 ++++++++++++++++++++++++ 4 files changed, 171 insertions(+) diff --git a/target/riscv/helper.h b/target/riscv/helper.h index 4d9c36609c..bc60712bd9 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -1214,3 +1214,10 @@ DEF_HELPER_3(scmplt8, tl, env, tl, tl) DEF_HELPER_3(scmple8, tl, env, tl, tl) DEF_HELPER_3(ucmplt8, tl, env, tl, tl) DEF_HELPER_3(ucmple8, tl, env, tl, tl) + +DEF_HELPER_3(smul16, i64, env, tl, tl) +DEF_HELPER_3(smulx16, i64, env, tl, tl) +DEF_HELPER_3(umul16, i64, env, tl, tl) +DEF_HELPER_3(umulx16, i64, env, tl, tl) +DEF_HELPER_3(khm16, tl, env, tl, tl) +DEF_HELPER_3(khmx16, tl, env, tl, tl) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 7519df7e20..38519a477c 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -681,3 +681,10 @@ scmplt8 0000111 ..... ..... 000 ..... 1111111 @r scmple8 0001111 ..... ..... 000 ..... 1111111 @r ucmplt8 0010111 ..... ..... 000 ..... 1111111 @r ucmple8 0011111 ..... ..... 000 ..... 1111111 @r + +smul16 1010000 ..... ..... 000 ..... 1111111 @r +smulx16 1010001 ..... ..... 000 ..... 1111111 @r +umul16 1011000 ..... ..... 000 ..... 1111111 @r +umulx16 1011001 ..... ..... 000 ..... 1111111 @r +khm16 1000011 ..... ..... 000 ..... 1111111 @r +khmx16 1001011 ..... ..... 000 ..... 1111111 @r diff --git a/target/riscv/insn_trans/trans_rvp.c.inc b/target/riscv/insn_trans/trans_rvp.c.inc index 6eb9e83c6f..7e5bf9041d 100644 --- a/target/riscv/insn_trans/trans_rvp.c.inc +++ b/target/riscv/insn_trans/trans_rvp.c.inc @@ -383,3 +383,56 @@ GEN_RVP_R_OOL(scmplt8); GEN_RVP_R_OOL(scmple8); GEN_RVP_R_OOL(ucmplt8); GEN_RVP_R_OOL(ucmple8); + +/* SIMD 16-bit Multiply Instructions */ +static inline bool +r_d64_ool(DisasContext *ctx, arg_r *a, + void (* fn)(TCGv_i64, TCGv_ptr, TCGv, TCGv)) +{ +#ifdef TARGET_RISCV64 + return r_ool(ctx, a, fn); +#else + TCGv src1, src2; + TCGv_i64 dst; + TCGv_i32 low, high; + + if (!has_ext(ctx, RVP) || !ctx->ext_p64) { + return false; + } + + src1 = tcg_temp_new(); + src2 = tcg_temp_new(); + dst = tcg_temp_new_i64(); + + gen_get_gpr(src1, a->rs1); + gen_get_gpr(src2, a->rs2); + fn(dst, cpu_env, src1, src2); + + low = tcg_temp_new_i32(); + high = tcg_temp_new_i32(); + tcg_gen_extrl_i64_i32(low, dst); + tcg_gen_extrh_i64_i32(high, dst); + gen_set_gpr(a->rd, low); + gen_set_gpr(a->rd + 1, high); + tcg_temp_free_i32(low); + tcg_temp_free_i32(high); + + tcg_temp_free(src1); + tcg_temp_free(src2); + tcg_temp_free_i64(dst); + return true; +#endif +} + +#define GEN_RVP_R_D64_OOL(NAME) \ +static bool trans_##NAME(DisasContext *s, arg_r *a) \ +{ \ + return r_d64_ool(s, a, gen_helper_##NAME); \ +} + +GEN_RVP_R_D64_OOL(smul16); +GEN_RVP_R_D64_OOL(smulx16); +GEN_RVP_R_D64_OOL(umul16); +GEN_RVP_R_D64_OOL(umulx16); +GEN_RVP_R_OOL(khm16); +GEN_RVP_R_OOL(khmx16); diff --git a/target/riscv/packed_helper.c b/target/riscv/packed_helper.c index ff86e015e4..13fed2c4d1 100644 --- a/target/riscv/packed_helper.c +++ b/target/riscv/packed_helper.c @@ -723,3 +723,107 @@ static inline void do_ucmple8(CPURISCVState *env, void *vd, void *va, } RVPR(ucmple8, 1, 1); + +/* SIMD 16-bit Multiply Instructions */ +typedef void PackedFn3(CPURISCVState *, void *, void *, void *); +static inline uint64_t rvpr64(CPURISCVState *env, target_ulong a, + target_ulong b, PackedFn3 *fn) +{ + uint64_t result; + + fn(env, &result, &a, &b); + return result; +} + +#define RVPR64(NAME) \ +uint64_t HELPER(NAME)(CPURISCVState *env, target_ulong a, \ + target_ulong b) \ +{ \ + return rvpr64(env, a, b, (PackedFn3 *)do_##NAME); \ +} + +static inline void do_smul16(CPURISCVState *env, void *vd, void *va, void *vb) +{ + int32_t *d = vd; + int16_t *a = va, *b = vb; + d[H4(0)] = (int32_t)a[H2(0)] * b[H2(0)]; + d[H4(1)] = (int32_t)a[H2(1)] * b[H2(1)]; +} + +RVPR64(smul16); + +static inline void do_smulx16(CPURISCVState *env, void *vd, void *va, void *vb) +{ + int32_t *d = vd; + int16_t *a = va, *b = vb; + d[H4(0)] = (int32_t)a[H2(0)] * b[H2(1)]; + d[H4(1)] = (int32_t)a[H2(1)] * b[H2(0)]; +} + +RVPR64(smulx16); + +static inline void do_umul16(CPURISCVState *env, void *vd, void *va, void *vb, + uint8_t i) +{ + uint32_t *d = vd; + uint16_t *a = va, *b = vb; + d[H4(0)] = (uint32_t)a[H2(0)] * b[H2(0)]; + d[H4(1)] = (uint32_t)a[H2(1)] * b[H2(1)]; +} + +RVPR64(umul16); + +static inline void do_umulx16(CPURISCVState *env, void *vd, void *va, void *vb, + uint8_t i) +{ + uint32_t *d = vd; + uint16_t *a = va, *b = vb; + d[H4(0)] = (uint32_t)a[H2(0)] * b[H2(1)]; + d[H4(1)] = (uint32_t)a[H2(1)] * b[H2(0)]; +} + +RVPR64(umulx16); + +static inline void do_khm16(CPURISCVState *env, void *vd, void *va, + void *vb, uint8_t i) +{ + int16_t *d = vd, *a = va, *b = vb; + + if (a[i] == INT16_MIN && b[i] == INT16_MIN) { + env->vxsat = 1; + d[i] = INT16_MAX; + } else { + d[i] = (int32_t)a[i] * b[i] >> 15; + } +} + +RVPR(khm16, 1, 2); + +static inline void do_khmx16(CPURISCVState *env, void *vd, void *va, + void *vb, uint8_t i) +{ + int16_t *d = vd, *a = va, *b = vb; + + /* + * t[x] = ra.H[x] s* rb.H[y]; + * rt.H[x] = SAT.Q15(t[x] s>> 15); + * + * (RV32: (x,y)=(1,0),(0,1), + * RV64: (x,y)=(3,2),(2,3), + * (1,0),(0,1) + */ + if (a[H2(i)] == INT16_MIN && b[H2(i + 1)] == INT16_MIN) { + env->vxsat = 1; + d[H2(i)] = INT16_MAX; + } else { + d[H2(i)] = (int32_t)a[H2(i)] * b[H2(i + 1)] >> 15; + } + if (a[H2(i + 1)] == INT16_MIN && b[H2(i)] == INT16_MIN) { + env->vxsat = 1; + d[H2(i + 1)] = INT16_MAX; + } else { + d[H2(i + 1)] = (int32_t)a[H2(i + 1)] * b[H2(i)] >> 15; + } +} + +RVPR(khmx16, 2, 2); -- 2.17.1