From patchwork Wed Jul 21 09:53:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Song Gao X-Patchwork-Id: 1508068 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 ozlabs.org (Postfix) with ESMTPS id 4GV9vG67Hmz9sSs for ; Wed, 21 Jul 2021 19:55:54 +1000 (AEST) Received: from localhost ([::1]:56458 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m68xE-0005ea-CZ for incoming@patchwork.ozlabs.org; Wed, 21 Jul 2021 05:55:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46228) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m68vM-0003WB-4y for qemu-devel@nongnu.org; Wed, 21 Jul 2021 05:53:56 -0400 Received: from mail.loongson.cn ([114.242.206.163]:49812 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m68vJ-0002Gc-6I for qemu-devel@nongnu.org; Wed, 21 Jul 2021 05:53:55 -0400 Received: from kvm-dev1.localdomain (unknown [10.2.5.134]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9DxL0CO7vdg5VEiAA--.21107S20; Wed, 21 Jul 2021 17:53:39 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Subject: [PATCH v2 18/22] target/loongarch: Add branch instruction translation Date: Wed, 21 Jul 2021 17:53:14 +0800 Message-Id: <1626861198-6133-19-git-send-email-gaosong@loongson.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1626861198-6133-1-git-send-email-gaosong@loongson.cn> References: <1626861198-6133-1-git-send-email-gaosong@loongson.cn> X-CM-TRANSID: AQAAf9DxL0CO7vdg5VEiAA--.21107S20 X-Coremail-Antispam: 1UD129KBjvJXoWxtFWkXw4UZFWrJF4kZw4kXrb_yoW3uF17pr 10kryUJ34DJry5JF9xtw45Crn8Jrs5C3yUCr9ayw48tF1fXFykAr10y34Y9F48uFyvqryY yFZ8Aa4jkFyUW3JanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 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: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, 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@gmail.com, philmd@redhat.com, richard.henderson@linaro.org, laurent@vivier.eu, maobibo@loongson.cn, yangxiaojuan@loongson.cn, alistair.francis@wdc.com, pbonzini@redhat.com, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This patch implement branch instruction translation. This includes: - BEQ, BNE, BLT[U], BGE[U] - BEQZ, BNEZ - B - BL - JIRL - BCEQZ, BCNEZ Signed-off-by: Song Gao --- target/loongarch/insns.decode | 30 +++++ target/loongarch/trans.inc.c | 249 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 279 insertions(+) diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode index ea776c2..077063e 100644 --- a/target/loongarch/insns.decode +++ b/target/loongarch/insns.decode @@ -38,6 +38,9 @@ %ca 15:3 %fcsrd 0:5 %fcsrs 5:5 +%offs21 0:s5 10:16 +%offs16 10:s16 +%offs 0:s10 10:16 # # Argument sets @@ -74,6 +77,11 @@ &fmt_rdcj rd cj &fmt_fdrjrk fd rj rk &fmt_fdrjsi12 fd rj si12 +&fmt_rjoffs21 rj offs21 +&fmt_cjoffs21 cj offs21 +&fmt_rdrjoffs16 rd rj offs16 +&fmt_offs offs +&fmt_rjrdoffs16 rj rd offs16 # # Formats @@ -110,6 +118,11 @@ @fmt_rdcj .... ........ ..... ..... .. ... ..... &fmt_rdcj %rd %cj @fmt_fdrjrk .... ........ ..... ..... ..... ..... &fmt_fdrjrk %fd %rj %rk @fmt_fdrjsi12 .... ...... ............ ..... ..... &fmt_fdrjsi12 %fd %rj %si12 +@fmt_rjoffs21 .... .. ................ ..... ..... &fmt_rjoffs21 %rj %offs21 +@fmt_cjoffs21 .... .. ................ .. ... ..... &fmt_cjoffs21 %cj %offs21 +@fmt_rdrjoffs16 .... .. ................ ..... ..... &fmt_rdrjoffs16 %rd %rj %offs16 +@fmt_offs .... .. .......................... &fmt_offs %offs +@fmt_rjrdoffs16 .... .. ................ ..... ..... &fmt_rjrdoffs16 %rj %rd %offs16 # # Fixed point arithmetic operation instruction @@ -448,3 +461,20 @@ fstgt_s 0011 10000111 01100 ..... ..... ..... @fmt_fdrjrk fstgt_d 0011 10000111 01101 ..... ..... ..... @fmt_fdrjrk fstle_s 0011 10000111 01110 ..... ..... ..... @fmt_fdrjrk fstle_d 0011 10000111 01111 ..... ..... ..... @fmt_fdrjrk + +# +# Branch instructions +# +beqz 0100 00 ................ ..... ..... @fmt_rjoffs21 +bnez 0100 01 ................ ..... ..... @fmt_rjoffs21 +bceqz 0100 10 ................ 00 ... ..... @fmt_cjoffs21 +bcnez 0100 10 ................ 01 ... ..... @fmt_cjoffs21 +jirl 0100 11 ................ ..... ..... @fmt_rdrjoffs16 +b 0101 00 .......................... @fmt_offs +bl 0101 01 .......................... @fmt_offs +beq 0101 10 ................ ..... ..... @fmt_rjrdoffs16 +bne 0101 11 ................ ..... ..... @fmt_rjrdoffs16 +blt 0110 00 ................ ..... ..... @fmt_rjrdoffs16 +bge 0110 01 ................ ..... ..... @fmt_rjrdoffs16 +bltu 0110 10 ................ ..... ..... @fmt_rjrdoffs16 +bgeu 0110 11 ................ ..... ..... @fmt_rjrdoffs16 diff --git a/target/loongarch/trans.inc.c b/target/loongarch/trans.inc.c index 8adfdd3..0c67c54 100644 --- a/target/loongarch/trans.inc.c +++ b/target/loongarch/trans.inc.c @@ -5285,3 +5285,252 @@ static bool trans_fstle_d(DisasContext *ctx, arg_fstle_d *a) } #undef DECL_ARG2 + +/* Branch Instructions translation */ +static bool trans_beqz(DisasContext *ctx, arg_beqz *a) +{ + TCGv t0, t1; + int bcond_flag = 0; + + t0 = tcg_temp_new(); + t1 = tcg_const_i64(0); + + if (a->rj != 0) { + gen_load_gpr(t0, a->rj); + bcond_flag = 1; + } + + if (bcond_flag == 0) { + ctx->hflags |= LOONGARCH_HFLAG_B; + } else { + tcg_gen_setcond_tl(TCG_COND_EQ, bcond, t0, t1); + ctx->hflags |= LOONGARCH_HFLAG_BC; + } + ctx->btarget = ctx->base.pc_next + (a->offs21 << 2); + + tcg_temp_free(t0); + tcg_temp_free(t1); + + return true; +} + +static bool trans_bnez(DisasContext *ctx, arg_bnez *a) +{ + TCGv t0, t1; + + t0 = tcg_temp_new(); + t1 = tcg_const_i64(0); + + if (a->rj != 0) { + gen_load_gpr(t0, a->rj); + tcg_gen_setcond_tl(TCG_COND_NE, bcond, t0, t1); + ctx->hflags |= LOONGARCH_HFLAG_BC; + } + ctx->btarget = ctx->base.pc_next + (a->offs21 << 2); + + tcg_temp_free(t0); + tcg_temp_free(t1); + + return true; +} + +static bool trans_bceqz(DisasContext *ctx, arg_bceqz *a) +{ + TCGv t0, t1; + TCGv_i32 cj; + + cj = tcg_const_i32(a->cj); + t0 = tcg_temp_new(); + t1 = tcg_const_i64(0); + + gen_helper_movcf2reg(t0, cpu_env, cj); + tcg_gen_setcond_tl(TCG_COND_EQ, bcond, t0, t1); + ctx->hflags |= LOONGARCH_HFLAG_BC; + ctx->btarget = ctx->base.pc_next + (a->offs21 << 2); + + tcg_temp_free_i32(cj); + tcg_temp_free(t0); + tcg_temp_free(t1); + + return true; +} + +static bool trans_bcnez(DisasContext *ctx, arg_bcnez *a) +{ + TCGv t0, t1; + TCGv_i32 cj; + + cj = tcg_const_i32(a->cj); + t0 = tcg_temp_new(); + t1 = tcg_const_i64(0); + + gen_helper_movcf2reg(t0, cpu_env, cj); + tcg_gen_setcond_tl(TCG_COND_NE, bcond, t0, t1); + ctx->hflags |= LOONGARCH_HFLAG_BC; + ctx->btarget = ctx->base.pc_next + (a->offs21 << 2); + + tcg_temp_free_i32(cj); + tcg_temp_free(t0); + tcg_temp_free(t1); + + return true; +} + +static bool trans_b(DisasContext *ctx, arg_b *a) +{ + ctx->hflags |= LOONGARCH_HFLAG_B; + ctx->btarget = ctx->base.pc_next + (a->offs << 2); + + return true; +} + +static bool trans_bl(DisasContext *ctx, arg_bl *a) +{ + ctx->btarget = ctx->base.pc_next + (a->offs << 2); + tcg_gen_movi_tl(cpu_gpr[1], ctx->base.pc_next + 4); + ctx->hflags |= LOONGARCH_HFLAG_B; + gen_branch(ctx, 4); + + return true; +} + +static bool trans_blt(DisasContext *ctx, arg_blt *a) +{ + TCGv t0, t1; + + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + + gen_load_gpr(t0, a->rj); + gen_load_gpr(t1, a->rd); + + tcg_gen_setcond_tl(TCG_COND_LT, bcond, t0, t1); + ctx->hflags |= LOONGARCH_HFLAG_BC; + ctx->btarget = ctx->base.pc_next + (a->offs16 << 2); + + tcg_temp_free(t0); + tcg_temp_free(t1); + + return true; +} + +static bool trans_bge(DisasContext *ctx, arg_bge *a) +{ + TCGv t0, t1; + + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + + gen_load_gpr(t0, a->rj); + gen_load_gpr(t1, a->rd); + + tcg_gen_setcond_tl(TCG_COND_GE, bcond, t0, t1); + ctx->hflags |= LOONGARCH_HFLAG_BC; + ctx->btarget = ctx->base.pc_next + (a->offs16 << 2); + + tcg_temp_free(t0); + tcg_temp_free(t1); + + return true; +} + +static bool trans_bltu(DisasContext *ctx, arg_bltu *a) +{ + TCGv t0, t1; + + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + + gen_load_gpr(t0, a->rj); + gen_load_gpr(t1, a->rd); + + tcg_gen_setcond_tl(TCG_COND_LTU, bcond, t0, t1); + ctx->hflags |= LOONGARCH_HFLAG_BC; + ctx->btarget = ctx->base.pc_next + (a->offs16 << 2); + + tcg_temp_free(t0); + tcg_temp_free(t1); + + return true; +} + +static bool trans_bgeu(DisasContext *ctx, arg_bgeu *a) +{ + TCGv t0, t1; + + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + + gen_load_gpr(t0, a->rj); + gen_load_gpr(t1, a->rd); + + tcg_gen_setcond_tl(TCG_COND_GEU, bcond, t0, t1); + ctx->hflags |= LOONGARCH_HFLAG_BC; + ctx->btarget = ctx->base.pc_next + (a->offs16 << 2); + + tcg_temp_free(t0); + tcg_temp_free(t1); + + return true; +} + +static bool trans_beq(DisasContext *ctx, arg_beq *a) +{ + TCGv t0, t1; + int bcond_flag = 0; + + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + + if (a->rj != a->rd) { + gen_load_gpr(t0, a->rj); + gen_load_gpr(t1, a->rd); + bcond_flag = 1; + } + + if (bcond_flag == 0) { + ctx->hflags |= LOONGARCH_HFLAG_B; + } else { + tcg_gen_setcond_tl(TCG_COND_EQ, bcond, t0, t1); + ctx->hflags |= LOONGARCH_HFLAG_BC; + } + ctx->btarget = ctx->base.pc_next + (a->offs16 << 2); + + tcg_temp_free(t0); + tcg_temp_free(t1); + + return true; +} + +static bool trans_bne(DisasContext *ctx, arg_bne *a) +{ + TCGv t0, t1; + + t0 = tcg_temp_new(); + t1 = tcg_temp_new(); + + if (a->rj != a->rd) { + gen_load_gpr(t0, a->rj); + gen_load_gpr(t1, a->rd); + tcg_gen_setcond_tl(TCG_COND_NE, bcond, t0, t1); + ctx->hflags |= LOONGARCH_HFLAG_BC; + } + ctx->btarget = ctx->base.pc_next + (a->offs16 << 2); + + tcg_temp_free(t0); + tcg_temp_free(t1); + + return true; +} + +static bool trans_jirl(DisasContext *ctx, arg_jirl *a) +{ + gen_base_offset_addr(btarget, a->rj, a->offs16 << 2); + if (a->rd != 0) { + tcg_gen_movi_tl(cpu_gpr[a->rd], ctx->base.pc_next + 4); + } + ctx->hflags |= LOONGARCH_HFLAG_BR; + gen_branch(ctx, 4); + + return true; +}