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Wed, 19 Jan 2022 19:38:13 +0800 (CST) From: Weiwei Li To: richard.henderson@linaro.org, palmer@dabbelt.com, alistair.francis@wdc.com, bin.meng@windriver.com, qemu-riscv@nongnu.org, qemu-devel@nongnu.org Subject: [RFC PATCH v5 04/14] target/riscv: rvk: add support for zbkx extension Date: Wed, 19 Jan 2022 19:37:44 +0800 Message-Id: <20220119113754.20323-5-liweiwei@iscas.ac.cn> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220119113754.20323-1-liweiwei@iscas.ac.cn> References: <20220119113754.20323-1-liweiwei@iscas.ac.cn> X-CM-TRANSID: rQCowABnblof+Odh7EjABQ--.19898S6 X-Coremail-Antispam: 1UD129KBjvJXoWxCFy8XF4fWrW8Kw4UXF18Xwb_yoW5KFWUpF 4FkrW3GFWUJrWfXa1SyF45G3W3Jrs3WrnrZ393tw1kta15JFZ5tr1qyw43KF45JFn8ur4j 9a1DAa4ayrWrXa7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPF14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E 14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIx kGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAF wI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJV W8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfUOBTY UUUUU X-Originating-IP: [180.156.147.178] X-CM-SenderInfo: 5olzvxxzhlqxpvfd2hldfou0/ Received-SPF: pass client-ip=159.226.251.23; envelope-from=liweiwei@iscas.ac.cn; helo=cstnet.cn X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_BL=0.001, RCVD_IN_MSPIKE_L4=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wangjunqiang@iscas.ac.cn, Weiwei Li , lazyparser@gmail.com, luruibo2000@163.com, lustrew@foxmail.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" - add xperm4 and xperm8 instructions Signed-off-by: Weiwei Li Signed-off-by: Junqiang Wang --- target/riscv/bitmanip_helper.c | 27 +++++++++++++++++++++++++ target/riscv/helper.h | 2 ++ target/riscv/insn32.decode | 4 ++++ target/riscv/insn_trans/trans_rvb.c.inc | 18 +++++++++++++++++ 4 files changed, 51 insertions(+) diff --git a/target/riscv/bitmanip_helper.c b/target/riscv/bitmanip_helper.c index e003e8b25b..b99c4a39a1 100644 --- a/target/riscv/bitmanip_helper.c +++ b/target/riscv/bitmanip_helper.c @@ -102,3 +102,30 @@ target_ulong HELPER(zip)(target_ulong rs1) x = do_shuf_stage(x, shuf_masks[0], shuf_masks[0] >> 1, 1); return x; } + +static inline target_ulong do_xperm(target_ulong rs1, target_ulong rs2, + uint32_t sz_log2) +{ + target_ulong r = 0; + target_ulong sz = 1LL << sz_log2; + target_ulong mask = (1LL << sz) - 1; + target_ulong pos; + + for (int i = 0; i < TARGET_LONG_BITS; i += sz) { + pos = ((rs2 >> i) & mask) << sz_log2; + if (pos < sizeof(target_ulong) * 8) { + r |= ((rs1 >> pos) & mask) << i; + } + } + return r; +} + +target_ulong HELPER(xperm4)(target_ulong rs1, target_ulong rs2) +{ + return do_xperm(rs1, rs2, 2); +} + +target_ulong HELPER(xperm8)(target_ulong rs1, target_ulong rs2) +{ + return do_xperm(rs1, rs2, 3); +} diff --git a/target/riscv/helper.h b/target/riscv/helper.h index 547dfa86bc..80f7ebc2c3 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -69,6 +69,8 @@ DEF_HELPER_FLAGS_2(clmulr, TCG_CALL_NO_RWG_SE, tl, tl, tl) DEF_HELPER_FLAGS_1(brev8, TCG_CALL_NO_RWG_SE, tl, tl) DEF_HELPER_FLAGS_1(unzip, TCG_CALL_NO_RWG_SE, tl, tl) DEF_HELPER_FLAGS_1(zip, TCG_CALL_NO_RWG_SE, tl, tl) +DEF_HELPER_FLAGS_2(xperm4, TCG_CALL_NO_RWG_SE, tl, tl, tl) +DEF_HELPER_FLAGS_2(xperm8, TCG_CALL_NO_RWG_SE, tl, tl, tl) /* Floating Point - Half Precision */ DEF_HELPER_FLAGS_3(fadd_h, TCG_CALL_NO_RWG, i64, env, i64, i64) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 9fd900f4bd..7491b2d562 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -776,6 +776,10 @@ clmulh 0000101 .......... 011 ..... 0110011 @r # *** RV32 extra Zbc Standard Extension *** clmulr 0000101 .......... 010 ..... 0110011 @r +# *** RV32 Zbkx Standard Extension *** +xperm4 0010100 .......... 010 ..... 0110011 @r +xperm8 0010100 .......... 100 ..... 0110011 @r + # *** RV32 Zbs Standard Extension *** bclr 0100100 .......... 001 ..... 0110011 @r bclri 01001. ........... 001 ..... 0010011 @sh diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc index 2a565b98c0..c6f09fb7d9 100644 --- a/target/riscv/insn_trans/trans_rvb.c.inc +++ b/target/riscv/insn_trans/trans_rvb.c.inc @@ -48,6 +48,12 @@ } \ } while (0) +#define REQUIRE_ZBKX(ctx) do { \ + if (!RISCV_CPU(ctx->cs)->cfg.ext_zbkx) { \ + return false; \ + } \ +} while (0) + static void gen_clz(TCGv ret, TCGv arg1) { tcg_gen_clzi_tl(ret, arg1, TARGET_LONG_BITS); @@ -595,3 +601,15 @@ static bool trans_zip(DisasContext *ctx, arg_zip *a) return true; } + +static bool trans_xperm4(DisasContext *ctx, arg_xperm4 *a) +{ + REQUIRE_ZBKX(ctx); + return gen_arith(ctx, a, EXT_NONE, gen_helper_xperm4, NULL); +} + +static bool trans_xperm8(DisasContext *ctx, arg_xperm8 *a) +{ + REQUIRE_ZBKX(ctx); + return gen_arith(ctx, a, EXT_NONE, gen_helper_xperm8, NULL); +} -- 2.17.1