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Tue, 12 Jan 2021 23:15:19 -0800 (PST) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [RFC v4 15/16] target/riscv: rvb: add/shift with prefix zero-extend Date: Wed, 13 Jan 2021 15:13:47 +0800 Message-Id: <20210113071350.24852-16-frank.chang@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210113071350.24852-1-frank.chang@sifive.com> References: <20210113071350.24852-1-frank.chang@sifive.com> Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::534; envelope-from=frank.chang@sifive.com; helo=mail-pg1-x534.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: Sagar Karandikar , Frank Chang , Bastian Koppelmann , Richard Henderson , Alistair Francis , Palmer Dabbelt , Kito Cheng Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Kito Cheng Signed-off-by: Kito Cheng Signed-off-by: Frank Chang Reviewed-by: Richard Henderson --- target/riscv/insn32-64.decode | 3 +++ target/riscv/insn_trans/trans_rvb.c.inc | 22 ++++++++++++++++++++++ target/riscv/translate.c | 6 ++++++ 3 files changed, 31 insertions(+) diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode index 2f80b0c07ae..01b28718af5 100644 --- a/target/riscv/insn32-64.decode +++ b/target/riscv/insn32-64.decode @@ -107,6 +107,7 @@ gorcw 0010100 .......... 101 ..... 0111011 @r sh1add_uw 0010000 .......... 010 ..... 0111011 @r sh2add_uw 0010000 .......... 100 ..... 0111011 @r sh3add_uw 0010000 .......... 110 ..... 0111011 @r +add_uw 0000100 .......... 000 ..... 0111011 @r =20 bsetiw 0010100 .......... 001 ..... 0011011 @sh5 bclriw 0100100 .......... 001 ..... 0011011 @sh5 @@ -116,3 +117,5 @@ sroiw 0010000 .......... 101 ..... 0011011 @sh5 roriw 0110000 .......... 101 ..... 0011011 @sh5 greviw 0110100 .......... 101 ..... 0011011 @sh5 gorciw 0010100 .......... 101 ..... 0011011 @sh5 + +slli_uw 00001. ........... 001 ..... 0011011 @sh diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_tr= ans/trans_rvb.c.inc index ca987f2705f..94fcf822a36 100644 --- a/target/riscv/insn_trans/trans_rvb.c.inc +++ b/target/riscv/insn_trans/trans_rvb.c.inc @@ -390,4 +390,26 @@ GEN_TRANS_SHADD_UW(1) GEN_TRANS_SHADD_UW(2) GEN_TRANS_SHADD_UW(3) =20 +static bool trans_add_uw(DisasContext *ctx, arg_add_uw *a) +{ + REQUIRE_EXT(ctx, RVB); + return gen_arith(ctx, a, gen_add_uw); +} + +static bool trans_slli_uw(DisasContext *ctx, arg_slli_uw *a) +{ + TCGv source1 =3D tcg_temp_new(); + gen_get_gpr(source1, a->rs1); + + if (a->shamt < 32) { + tcg_gen_deposit_z_i64(source1, source1, a->shamt, 32); + } else { + tcg_gen_shli_i64(source1, source1, a->shamt); + } + + gen_set_gpr(a->rd, source1); + tcg_temp_free(source1); + return true; +} + #endif diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 7365e591eb7..dbcc15ed73f 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -930,6 +930,12 @@ GEN_SHADD_UW(1) GEN_SHADD_UW(2) GEN_SHADD_UW(3) =20 +static void gen_add_uw(TCGv ret, TCGv arg1, TCGv arg2) +{ + tcg_gen_ext32u_tl(arg1, arg1); + tcg_gen_add_tl(ret, arg1, arg2); +} + #endif =20 static bool gen_arith(DisasContext *ctx, arg_r *a, --=20 2.17.1