From patchwork Mon Oct 18 12:47:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: gaosong X-Patchwork-Id: 12566459 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CEA15C433F5 for ; Mon, 18 Oct 2021 13:08:39 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6DD5360F44 for ; Mon, 18 Oct 2021 13:08:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6DD5360F44 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:48544 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mcSNa-00076C-J5 for qemu-devel@archiver.kernel.org; Mon, 18 Oct 2021 09:08:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37224) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mcS3d-0005Gv-Iy for qemu-devel@nongnu.org; Mon, 18 Oct 2021 08:48:01 -0400 Received: from mail.loongson.cn ([114.242.206.163]:50142 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mcS3Z-0003l0-Ln for qemu-devel@nongnu.org; Mon, 18 Oct 2021 08:48:01 -0400 Received: from kvm-dev1.localdomain (unknown [10.2.5.134]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9DxT2rfbG1hyhAcAA--.29044S15; Mon, 18 Oct 2021 20:47:41 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Subject: [PATCH v7 13/21] target/loongarch: Add floating point move instruction translation Date: Mon, 18 Oct 2021 20:47:19 +0800 Message-Id: <1634561247-25499-14-git-send-email-gaosong@loongson.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1634561247-25499-1-git-send-email-gaosong@loongson.cn> References: <1634561247-25499-1-git-send-email-gaosong@loongson.cn> X-CM-TRANSID: AQAAf9DxT2rfbG1hyhAcAA--.29044S15 X-Coremail-Antispam: 1UD129KBjvJXoWxuw1Dtw43ury5trW5tw1DWrg_yoWfurWxpr 12kryUCr48tFy3JF97K3yYgF45Jr1xCa4jq3yayry8AF1UJF1UAF1kJ3y2krW5Wwn3uFyU JF4YyFyUKFyUXaUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnUUvcSsGvfC2KfnxnUUI43ZEXa7xR_UUUUUUUUU== X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ Received-SPF: pass client-ip=114.242.206.163; envelope-from=gaosong@loongson.cn; helo=loongson.cn X-Spam_score_int: 0 X-Spam_score: -0.0 X-Spam_bar: / X-Spam_report: (-0.0 / 5.0 requ) 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, thuth@redhat.com, chenhuacai@loongson.cn, philmd@redhat.com, richard.henderson@linaro.org, laurent@vivier.eu, peterx@redhat.com, f4bug@amsat.org, yangxiaojuan@loongson.cn, alistair.francis@wdc.com, maobibo@loongson.cn, pbonzini@redhat.com, bmeng.cn@gmail.com, alex.bennee@linaro.org, gaosong@loongson.cn Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This patch implement floationg point move instruction translation. This includes: - FMOV.{S/D} - FSEL - MOVGR2FR.{W/D}, MOVGR2FRH.W - MOVFR2GR.{S/D}, MOVFRH2GR.S - MOVGR2FCSR, MOVFCSR2GR - MOVFR2CF, MOVCF2FR - MOVGR2CF, MOVCF2GR Signed-off-by: Song Gao Signed-off-by: Xiaojuan Yang Reviewed-by: Richard Henderson --- target/loongarch/fpu_helper.c | 6 ++ target/loongarch/helper.h | 2 + target/loongarch/insn_trans/trans_fmov.c | 153 +++++++++++++++++++++++++++++++ target/loongarch/insns.decode | 41 +++++++++ target/loongarch/translate.c | 1 + 5 files changed, 203 insertions(+) create mode 100644 target/loongarch/insn_trans/trans_fmov.c diff --git a/target/loongarch/fpu_helper.c b/target/loongarch/fpu_helper.c index 203c371..8cd0f50 100644 --- a/target/loongarch/fpu_helper.c +++ b/target/loongarch/fpu_helper.c @@ -857,3 +857,9 @@ uint64_t helper_ftint_w_d(CPULoongArchState *env, uint64_t fj) update_fcsr0(env, GETPC()); return fd; } + +void helper_set_rounding_mode(CPULoongArchState *env, uint32_t fcsr0) +{ + set_float_rounding_mode(ieee_rm[(fcsr0 >> FCSR0_RM) & 0x3], + &env->fp_status); +} diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h index ab0e9d8..c19220a 100644 --- a/target/loongarch/helper.h +++ b/target/loongarch/helper.h @@ -93,3 +93,5 @@ DEF_HELPER_2(ftint_w_s, i64, env, i64) DEF_HELPER_2(ftint_w_d, i64, env, i64) DEF_HELPER_2(frint_s, i64, env, i64) DEF_HELPER_2(frint_d, i64, env, i64) + +DEF_HELPER_FLAGS_2(set_rounding_mode, TCG_CALL_NO_RWG, void, env, i32) diff --git a/target/loongarch/insn_trans/trans_fmov.c b/target/loongarch/insn_trans/trans_fmov.c new file mode 100644 index 0000000..0024c0d --- /dev/null +++ b/target/loongarch/insn_trans/trans_fmov.c @@ -0,0 +1,153 @@ +/* + * LoongArch translate functions + * + * Copyright (c) 2021 Loongson Technology Corporation Limited + * + * SPDX-License-Identifier: LGPL-2.1+ + */ + +static const uint32_t fcsr_mask[4] = { + UINT32_MAX, FCSR0_M1, FCSR0_M2, FCSR0_M3 +}; + +static bool trans_fsel(DisasContext *ctx, arg_fsel *a) +{ + TCGv zero = tcg_constant_tl(0); + TCGv cond = tcg_temp_new(); + + tcg_gen_ld8u_tl(cond, cpu_env, offsetof(CPULoongArchState, cf[a->ca])); + tcg_gen_movcond_tl(TCG_COND_EQ, cpu_fpr[a->fd], cond, zero, + cpu_fpr[a->fj], cpu_fpr[a->fk]); + tcg_temp_free(cond); + return true; +} + +static bool gen_f2f(DisasContext *ctx, arg_fmt_fdfj *a, + void (*func)(TCGv, TCGv), bool nanbox) +{ + TCGv dest = cpu_fpr[a->fd]; + TCGv src = cpu_fpr[a->fj]; + + func(dest, src); + if (nanbox) { + gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]); + } + return true; +} + +static bool gen_r2f(DisasContext *ctx, arg_fmt_fdrj *a, + void (*func)(TCGv, TCGv)) +{ + TCGv src = gpr_src(ctx, a->rj, EXT_NONE); + + func(cpu_fpr[a->fd], src); + return true; +} + +static bool gen_f2r(DisasContext *ctx, arg_fmt_rdfj *a, + void (*func)(TCGv, TCGv)) +{ + TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE); + + func(dest, cpu_fpr[a->fj]); + return true; +} + +static bool trans_movgr2fcsr(DisasContext *ctx, arg_movgr2fcsr *a) +{ + uint32_t mask = fcsr_mask[a->fcsrd]; + TCGv Rj = gpr_src(ctx, a->rj, EXT_NONE); + + if (mask == UINT32_MAX) { + tcg_gen_extrl_i64_i32(cpu_fcsr0, Rj); + } else { + TCGv_i32 temp = tcg_temp_new_i32(); + + tcg_gen_extrl_i64_i32(temp, Rj); + tcg_gen_andi_i32(temp, temp, mask); + tcg_gen_andi_i32(cpu_fcsr0, cpu_fcsr0, ~mask); + tcg_gen_or_i32(cpu_fcsr0, cpu_fcsr0, temp); + tcg_temp_free_i32(temp); + + /* + * Install the new rounding mode to fpu_status, if changed. + * Note that FCSR3 is exactly the rounding mode field. + */ + if (mask != FCSR0_M3) { + return true; + } + } + gen_helper_set_rounding_mode(cpu_env, cpu_fcsr0); + return true; +} + +static bool trans_movfcsr2gr(DisasContext *ctx, arg_movfcsr2gr *a) +{ + TCGv_i32 temp = tcg_temp_new_i32(); + TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE); + + tcg_gen_andi_i32(temp, cpu_fcsr0, fcsr_mask[a->fcsrs]); + tcg_gen_ext_i32_i64(dest, temp); + tcg_temp_free_i32(temp); + return true; +} + +static void gen_movgr2fr_w(TCGv dest, TCGv src) +{ + tcg_gen_deposit_i64(dest, dest, src, 0, 32); +} + +static void gen_movgr2frh_w(TCGv dest, TCGv src) +{ + tcg_gen_deposit_i64(dest, dest, src, 32, 32); +} + +static void gen_movfrh2gr_s(TCGv dest, TCGv src) +{ + tcg_gen_sextract_tl(dest, src, 32, 32); +} + +static bool trans_movfr2cf(DisasContext *ctx, arg_movfr2cf *a) +{ + TCGv t0 = tcg_temp_new(); + + tcg_gen_andi_tl(t0, cpu_fpr[a->fj], 0x1); + tcg_gen_st8_tl(t0, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7])); + + tcg_temp_free(t0); + return true; +} + +static bool trans_movcf2fr(DisasContext *ctx, arg_movcf2fr *a) +{ + tcg_gen_ld8u_tl(cpu_fpr[a->fd], cpu_env, + offsetof(CPULoongArchState, cf[a->cj & 0x7])); + return true; +} + +static bool trans_movgr2cf(DisasContext *ctx, arg_movgr2cf *a) +{ + TCGv t0 = tcg_temp_new(); + + tcg_gen_andi_tl(t0, gpr_src(ctx, a->rj, EXT_NONE), 0x1); + tcg_gen_st8_tl(t0, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7])); + + tcg_temp_free(t0); + return true; +} + +static bool trans_movcf2gr(DisasContext *ctx, arg_movcf2gr *a) +{ + tcg_gen_ld8u_tl(gpr_dst(ctx, a->rd, EXT_NONE), cpu_env, + offsetof(CPULoongArchState, cf[a->cj & 0x7])); + return true; +} + +TRANS(fmov_s, gen_f2f, tcg_gen_mov_tl, true) +TRANS(fmov_d, gen_f2f, tcg_gen_mov_tl, false) +TRANS(movgr2fr_w, gen_r2f, gen_movgr2fr_w) +TRANS(movgr2fr_d, gen_r2f, tcg_gen_mov_tl) +TRANS(movgr2frh_w, gen_r2f, gen_movgr2frh_w) +TRANS(movfr2gr_s, gen_f2r, tcg_gen_ext32s_tl) +TRANS(movfr2gr_d, gen_f2r, tcg_gen_mov_tl) +TRANS(movfrh2gr_s, gen_f2r, gen_movfrh2gr_s) diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode index c6fd762..febf89a 100644 --- a/target/loongarch/insns.decode +++ b/target/loongarch/insns.decode @@ -34,6 +34,10 @@ %fa 15:5 %cd 0:3 %fcond 15:5 +%cj 5:3 +%ca 15:3 +%fcsrd 0:5 +%fcsrs 5:5 # # Argument sets @@ -59,6 +63,15 @@ &fmt_fdfjfkfa fd fj fk fa &fmt_fdfj fd fj &fmt_cdfjfkfcond cd fj fk fcond +&fmt_fdfjfkca fd fj fk ca +&fmt_fdrj fd rj +&fmt_rdfj rd fj +&fmt_fcsrdrj fcsrd rj +&fmt_rdfcsrs rd fcsrs +&fmt_cdfj cd fj +&fmt_fdcj fd cj +&fmt_cdrj cd rj +&fmt_rdcj rd cj # # Formats @@ -84,6 +97,15 @@ @fmt_fdfjfkfa .... ........ ..... ..... ..... ..... &fmt_fdfjfkfa %fd %fj %fk %fa @fmt_fdfj .... ........ ..... ..... ..... ..... &fmt_fdfj %fd %fj @fmt_cdfjfkfcond .... ........ ..... ..... ..... .. ... &fmt_cdfjfkfcond %cd %fj %fk %fcond +@fmt_fdfjfkca .... ........ .. ... ..... ..... ..... &fmt_fdfjfkca %fd %fj %fk %ca +@fmt_fdrj .... ........ ..... ..... ..... ..... &fmt_fdrj %fd %rj +@fmt_rdfj .... ........ ..... ..... ..... ..... &fmt_rdfj %rd %fj +@fmt_fcsrdrj .... ........ ..... ..... ..... ..... &fmt_fcsrdrj %fcsrd %rj +@fmt_rdfcsrs .... ........ ..... ..... ..... ..... &fmt_rdfcsrs %rd %fcsrs +@fmt_cdfj .... ........ ..... ..... ..... .. ... &fmt_cdfj %cd %fj +@fmt_fdcj .... ........ ..... ..... .. ... ..... &fmt_fdcj %fd %cj +@fmt_cdrj .... ........ ..... ..... ..... .. ... &fmt_cdrj %cd %rj +@fmt_rdcj .... ........ ..... ..... .. ... ..... &fmt_rdcj %rd %cj # # Fixed point arithmetic operation instruction @@ -383,3 +405,22 @@ ffint_d_w 0000 00010001 11010 01000 ..... ..... @fmt_fdfj ffint_d_l 0000 00010001 11010 01010 ..... ..... @fmt_fdfj frint_s 0000 00010001 11100 10001 ..... ..... @fmt_fdfj frint_d 0000 00010001 11100 10010 ..... ..... @fmt_fdfj + +# +# Floating point move instruction +# +fmov_s 0000 00010001 01001 00101 ..... ..... @fmt_fdfj +fmov_d 0000 00010001 01001 00110 ..... ..... @fmt_fdfj +fsel 0000 11010000 00 ... ..... ..... ..... @fmt_fdfjfkca +movgr2fr_w 0000 00010001 01001 01001 ..... ..... @fmt_fdrj +movgr2fr_d 0000 00010001 01001 01010 ..... ..... @fmt_fdrj +movgr2frh_w 0000 00010001 01001 01011 ..... ..... @fmt_fdrj +movfr2gr_s 0000 00010001 01001 01101 ..... ..... @fmt_rdfj +movfr2gr_d 0000 00010001 01001 01110 ..... ..... @fmt_rdfj +movfrh2gr_s 0000 00010001 01001 01111 ..... ..... @fmt_rdfj +movgr2fcsr 0000 00010001 01001 10000 ..... ..... @fmt_fcsrdrj +movfcsr2gr 0000 00010001 01001 10010 ..... ..... @fmt_rdfcsrs +movfr2cf 0000 00010001 01001 10100 ..... 00 ... @fmt_cdfj +movcf2fr 0000 00010001 01001 10101 00 ... ..... @fmt_fdcj +movgr2cf 0000 00010001 01001 10110 ..... 00 ... @fmt_cdrj +movcf2gr 0000 00010001 01001 10111 00 ... ..... @fmt_rdcj diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c index 9d021cc..e69ac42 100644 --- a/target/loongarch/translate.c +++ b/target/loongarch/translate.c @@ -189,6 +189,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext) #include "insn_trans/trans_farith.c" #include "insn_trans/trans_fcmp.c" #include "insn_trans/trans_fcnv.c" +#include "insn_trans/trans_fmov.c" static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs) {