From nobody Wed Oct 8 16:04:27 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1636700770392617.1842030680041; Thu, 11 Nov 2021 23:06:10 -0800 (PST) Received: from localhost ([::1]:43578 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mlQdV-0002Dv-88 for importer@patchew.org; Fri, 12 Nov 2021 02:06:09 -0500 Received: from eggs.gnu.org ([209.51.188.92]:46276) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mlQSp-0006pE-0L for qemu-devel@nongnu.org; Fri, 12 Nov 2021 01:55:07 -0500 Received: from mail.loongson.cn ([114.242.206.163]:49648 helo=loongson.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mlQSm-0007jP-Ht for qemu-devel@nongnu.org; Fri, 12 Nov 2021 01:55:06 -0500 Received: from kvm-dev1.localdomain (unknown [10.2.5.134]) by mail.loongson.cn (Coremail) with SMTP id AQAAf9CxydCRD45hHoQCAA--.6006S17; Fri, 12 Nov 2021 14:54:48 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Subject: [PATCH v10 15/26] target/loongarch: Add branch instruction translation Date: Fri, 12 Nov 2021 14:53:58 +0800 Message-Id: <1636700049-24381-16-git-send-email-gaosong@loongson.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1636700049-24381-1-git-send-email-gaosong@loongson.cn> References: <1636700049-24381-1-git-send-email-gaosong@loongson.cn> X-CM-TRANSID: AQAAf9CxydCRD45hHoQCAA--.6006S17 X-Coremail-Antispam: 1UD129KBjvJXoW3Xr4DJF1xtF18Zry5Ww45Wrg_yoWxGry5pr 1UCryUKrWkJry5Jrn5tw45XFy5Xrn8G347GrW3twn3JF42q3WUAF18AryUKr4jvw1kZry8 tF4rAryjgFy8XwUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnUUvcSsGvfC2KfnxnUUI43ZEXa7xR_UUUUUUUUU== X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ 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=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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xiaojuan Yang , richard.henderson@linaro.org, laurent@vivier.eu Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1636700771550100001 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This includes: - BEQ, BNE, BLT[U], BGE[U] - BEQZ, BNEZ - B - BL - JIRL - BCEQZ, BCNEZ Signed-off-by: Song Gao Signed-off-by: Xiaojuan Yang Reviewed-by: Richard Henderson --- target/loongarch/insn_trans/trans_branch.c.inc | 82 ++++++++++++++++++++++= ++++ target/loongarch/insns.decode | 30 ++++++++++ target/loongarch/translate.c | 1 + 3 files changed, 113 insertions(+) create mode 100644 target/loongarch/insn_trans/trans_branch.c.inc diff --git a/target/loongarch/insn_trans/trans_branch.c.inc b/target/loonga= rch/insn_trans/trans_branch.c.inc new file mode 100644 index 0000000..ecb6bd1 --- /dev/null +++ b/target/loongarch/insn_trans/trans_branch.c.inc @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (c) 2021 Loongson Technology Corporation Limited + */ + +static bool trans_b(DisasContext *ctx, arg_b *a) +{ + gen_goto_tb(ctx, 0, ctx->base.pc_next + (a->offs << 2)); + ctx->base.is_jmp =3D DISAS_NORETURN; + return true; +} + +static bool trans_bl(DisasContext *ctx, arg_bl *a) +{ + tcg_gen_movi_tl(cpu_gpr[1], ctx->base.pc_next + 4); + gen_goto_tb(ctx, 0, ctx->base.pc_next + (a->offs << 2)); + ctx->base.is_jmp =3D DISAS_NORETURN; + return true; +} + +static bool trans_jirl(DisasContext *ctx, arg_jirl *a) +{ + TCGv dest =3D gpr_dst(ctx, a->rd, EXT_NONE); + TCGv src1 =3D gpr_src(ctx, a->rj, EXT_NONE); + + tcg_gen_addi_tl(cpu_pc, src1, (a->offs16) << 2); + tcg_gen_movi_tl(dest, ctx->base.pc_next + 4); + tcg_gen_lookup_and_goto_ptr(); + ctx->base.is_jmp =3D DISAS_NORETURN; + return true; +} + +static void gen_bc(DisasContext *ctx, TCGv src1, TCGv src2, + target_long offs, TCGCond cond) +{ + TCGLabel *l =3D gen_new_label(); + tcg_gen_brcond_tl(cond, src1, src2, l); + gen_goto_tb(ctx, 1, ctx->base.pc_next + 4); + gen_set_label(l); + gen_goto_tb(ctx, 0, ctx->base.pc_next + offs); + ctx->base.is_jmp =3D DISAS_NORETURN; +} + +static bool gen_r2_bc(DisasContext *ctx, arg_fmt_rjrdoffs16 *a, TCGCond co= nd) +{ + TCGv src1 =3D gpr_src(ctx, a->rj, EXT_NONE); + TCGv src2 =3D gpr_src(ctx, a->rd, EXT_NONE); + + gen_bc(ctx, src1, src2, (a->offs16 << 2), cond); + return true; +} + +static bool gen_rz_bc(DisasContext *ctx, arg_fmt_rjoffs21 *a, TCGCond cond) +{ + TCGv src1 =3D gpr_src(ctx, a->rj, EXT_NONE); + TCGv src2 =3D tcg_constant_tl(0); + + gen_bc(ctx, src1, src2, (a->offs21 << 2), cond); + return true; +} + +static bool gen_cz_bc(DisasContext *ctx, arg_fmt_cjoffs21 *a, TCGCond cond) +{ + TCGv src1 =3D tcg_temp_new(); + TCGv src2 =3D tcg_constant_tl(0); + + tcg_gen_ld8u_tl(src1, cpu_env, + offsetof(CPULoongArchState, cf[a->cj & 0x7])); + gen_bc(ctx, src1, src2, (a->offs21 << 2), cond); + return true; +} + +TRANS(beq, gen_r2_bc, TCG_COND_EQ) +TRANS(bne, gen_r2_bc, TCG_COND_NE) +TRANS(blt, gen_r2_bc, TCG_COND_LT) +TRANS(bge, gen_r2_bc, TCG_COND_GE) +TRANS(bltu, gen_r2_bc, TCG_COND_LTU) +TRANS(bgeu, gen_r2_bc, TCG_COND_GEU) +TRANS(beqz, gen_rz_bc, TCG_COND_EQ) +TRANS(bnez, gen_rz_bc, TCG_COND_NE) +TRANS(bceqz, gen_cz_bc, TCG_COND_EQ) +TRANS(bcnez, gen_cz_bc, TCG_COND_NE) diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode index ee1d544..e28b843 100644 --- a/target/loongarch/insns.decode +++ b/target/loongarch/insns.decode @@ -37,6 +37,9 @@ %ca 15:3 %fcsrd 0:5 %fcsrs 5:5 +%offs21 0:s5 10:16 +%offs16 10:s16 +%offs 0:s10 10:16 =20 # # Argument sets @@ -73,6 +76,11 @@ &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 =20 # # Formats @@ -109,6 +117,11 @@ @fmt_rdcj .... ........ ..... ..... .. ... ..... &fmt_rdcj = %rd %cj @fmt_fdrjrk .... ........ ..... ..... ..... ..... &fmt_fdrjrk = %fd %rj %rk @fmt_fdrjsi12 .... ...... ............ ..... ..... &fmt_fdrjsi1= 2 %fd %rj %si12 +@fmt_rjoffs21 .... .. ................ ..... ..... &fmt_rjoffs2= 1 %rj %offs21 +@fmt_cjoffs21 .... .. ................ .. ... ..... &fmt_cjoffs2= 1 %cj %offs21 +@fmt_rdrjoffs16 .... .. ................ ..... ..... &fmt_rdrjoff= s16 %rd %rj %offs16 +@fmt_offs .... .. .......................... &fmt_offs = %offs +@fmt_rjrdoffs16 .... .. ................ ..... ..... &fmt_rjrdoff= s16 %rj %rd %offs16 =20 # # Fixed point arithmetic operation instruction @@ -447,3 +460,20 @@ 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/translate.c b/target/loongarch/translate.c index bf329fd..437f33d 100644 --- a/target/loongarch/translate.c +++ b/target/loongarch/translate.c @@ -190,6 +190,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExten= d dst_ext) #include "insn_trans/trans_fcnv.c.inc" #include "insn_trans/trans_fmov.c.inc" #include "insn_trans/trans_fmemory.c.inc" +#include "insn_trans/trans_branch.c.inc" =20 static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState= *cs) { --=20 1.8.3.1