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[123.193.74.252]) by smtp.gmail.com with ESMTPSA id y18sm574443pfb.106.2021.10.19.20.07.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Oct 2021 20:07:22 -0700 (PDT) From: frank.chang@sifive.com To: qemu-riscv@nongnu.org Subject: [PATCH v4 5/8] target/riscv: zfh: half-precision floating-point classify Date: Wed, 20 Oct 2021 11:06:48 +0800 Message-Id: <20211020030653.213565-6-frank.chang@sifive.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211020030653.213565-1-frank.chang@sifive.com> References: <20211020030653.213565-1-frank.chang@sifive.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::436; envelope-from=frank.chang@sifive.com; helo=mail-pf1-x436.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=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: Frank Chang , Bin Meng , Richard Henderson , qemu-devel@nongnu.org, Chih-Min Chao , Palmer Dabbelt , Alistair Francis , Kito Cheng Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Kito Cheng Signed-off-by: Kito Cheng Signed-off-by: Chih-Min Chao Signed-off-by: Frank Chang Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis --- target/riscv/fpu_helper.c | 6 ++++++ target/riscv/helper.h | 1 + target/riscv/insn32.decode | 1 + target/riscv/insn_trans/trans_rvzfh.c.inc | 12 ++++++++++++ 4 files changed, 20 insertions(+) diff --git a/target/riscv/fpu_helper.c b/target/riscv/fpu_helper.c index ec2009ee65b..388e23ca670 100644 --- a/target/riscv/fpu_helper.c +++ b/target/riscv/fpu_helper.c @@ -482,6 +482,12 @@ target_ulong helper_feq_h(CPURISCVState *env, uint64_t rs1, uint64_t rs2) return float16_eq_quiet(frs1, frs2, &env->fp_status); } +target_ulong helper_fclass_h(uint64_t rs1) +{ + float16 frs1 = check_nanbox_h(rs1); + return fclass_h(frs1); +} + target_ulong helper_fcvt_w_h(CPURISCVState *env, uint64_t rs1) { float16 frs1 = check_nanbox_h(rs1); diff --git a/target/riscv/helper.h b/target/riscv/helper.h index 9c89521d4ad..d25cf725c57 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -89,6 +89,7 @@ DEF_HELPER_FLAGS_2(fcvt_h_w, TCG_CALL_NO_RWG, i64, env, tl) DEF_HELPER_FLAGS_2(fcvt_h_wu, TCG_CALL_NO_RWG, i64, env, tl) DEF_HELPER_FLAGS_2(fcvt_h_l, TCG_CALL_NO_RWG, i64, env, tl) DEF_HELPER_FLAGS_2(fcvt_h_lu, TCG_CALL_NO_RWG, i64, env, tl) +DEF_HELPER_FLAGS_1(fclass_h, TCG_CALL_NO_RWG_SE, tl, i64) /* Special functions */ DEF_HELPER_2(csrr, tl, env, int) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 3906c9fb201..6c4cde216bc 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -754,6 +754,7 @@ fmv_x_h 1110010 00000 ..... 000 ..... 1010011 @r2 feq_h 1010010 ..... ..... 010 ..... 1010011 @r flt_h 1010010 ..... ..... 001 ..... 1010011 @r fle_h 1010010 ..... ..... 000 ..... 1010011 @r +fclass_h 1110010 00000 ..... 001 ..... 1010011 @r2 fcvt_h_w 1101010 00000 ..... ... ..... 1010011 @r2_rm fcvt_h_wu 1101010 00001 ..... ... ..... 1010011 @r2_rm fmv_h_x 1111010 00000 ..... 000 ..... 1010011 @r2 diff --git a/target/riscv/insn_trans/trans_rvzfh.c.inc b/target/riscv/insn_trans/trans_rvzfh.c.inc index 8d0959a6671..0549e25fb45 100644 --- a/target/riscv/insn_trans/trans_rvzfh.c.inc +++ b/target/riscv/insn_trans/trans_rvzfh.c.inc @@ -372,6 +372,18 @@ static bool trans_fle_h(DisasContext *ctx, arg_fle_h *a) return true; } +static bool trans_fclass_h(DisasContext *ctx, arg_fclass_h *a) +{ + REQUIRE_FPU; + REQUIRE_ZFH(ctx); + + TCGv dest = dest_gpr(ctx, a->rd); + + gen_helper_fclass_h(dest, cpu_fpr[a->rs1]); + gen_set_gpr(ctx, a->rd, dest); + return true; +} + static bool trans_fcvt_w_h(DisasContext *ctx, arg_fcvt_w_h *a) { REQUIRE_FPU;