From nobody Tue Feb 10 07:22:52 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.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; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=mail.uni-paderborn.de Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1547818262037500.5752103615016; Fri, 18 Jan 2019 05:31:02 -0800 (PST) Received: from localhost ([127.0.0.1]:39370 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gkUEe-0000Rv-Vs for importer@patchew.org; Fri, 18 Jan 2019 08:31:01 -0500 Received: from eggs.gnu.org ([209.51.188.92]:42108) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gkU0G-00058l-L9 for qemu-devel@nongnu.org; Fri, 18 Jan 2019 08:16:10 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gkU0E-0007nF-KW for qemu-devel@nongnu.org; Fri, 18 Jan 2019 08:16:08 -0500 Received: from mail.uni-paderborn.de ([131.234.142.9]:53532) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gkU0A-0006xx-W5; Fri, 18 Jan 2019 08:16:04 -0500 Received: from wormulon.uni-paderborn.de ([131.234.189.22] helo=localhost.localdomain) by mail.uni-paderborn.de with esmtp (Exim 4.89 hoth) id 1gkTzj-0001sF-RX; Fri, 18 Jan 2019 14:15:35 +0100 Received: from mail.uni-paderborn.de by wormulon with queue id 3093580-5; Fri, 18 Jan 2019 13:15:33 GMT X-Envelope-From: From: Bastian Koppelmann To: sagark@eecs.berkeley.edu, palmer@sifive.com, Alistair.Francis@wdc.com, kbastian@mail.uni-paderborn.de Date: Fri, 18 Jan 2019 14:14:42 +0100 Message-Id: <20190118131456.32451-22-kbastian@mail.uni-paderborn.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190118131456.32451-1-kbastian@mail.uni-paderborn.de> References: <20190118131456.32451-1-kbastian@mail.uni-paderborn.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-PMX-Version: 6.4.6.2792898, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2019.1.18.130316, AntiVirus-Engine: 5.56.1, AntiVirus-Data: 2019.1.18.5561000 X-IMT-Spam-Score: 0.0 () X-IMT-Authenticated-Sender: X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 131.234.142.9 Subject: [Qemu-devel] [PATCH v4 21/35] target/riscv: Remove manual decoding from gen_branch() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: richard.henderson@linaro.org, peer.adelt@hni.uni-paderborn.de, qemu-riscv@nongnu.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" We now utilizes argument-sets of decodetree such that no manual decoding is necessary. Reviewed-by: Richard Henderson Signed-off-by: Bastian Koppelmann Signed-off-by: Peer Adelt --- target/riscv/insn_trans/trans_rvi.inc.c | 46 +++++++++++++++++------- target/riscv/translate.c | 47 ------------------------- 2 files changed, 33 insertions(+), 60 deletions(-) diff --git a/target/riscv/insn_trans/trans_rvi.inc.c b/target/riscv/insn_tr= ans/trans_rvi.inc.c index 1e8031d92a..eb76763fa7 100644 --- a/target/riscv/insn_trans/trans_rvi.inc.c +++ b/target/riscv/insn_trans/trans_rvi.inc.c @@ -72,41 +72,61 @@ static bool trans_jalr(DisasContext *ctx, arg_jalr *a) return true; } =20 -static bool trans_beq(DisasContext *ctx, arg_beq *a) +static bool gen_branch(DisasContext *ctx, arg_b *a, TCGCond cond) { - gen_branch(ctx->env, ctx, OPC_RISC_BEQ, a->rs1, a->rs2, a->imm); + TCGLabel *l =3D gen_new_label(); + TCGv source1, source2; + source1 =3D tcg_temp_new(); + source2 =3D tcg_temp_new(); + gen_get_gpr(source1, a->rs1); + gen_get_gpr(source2, a->rs2); + + tcg_gen_brcond_tl(cond, source1, source2, l); + gen_goto_tb(ctx, 1, ctx->pc_succ_insn); + gen_set_label(l); /* branch taken */ + + if (!riscv_has_ext(ctx->env, RVC) && ((ctx->base.pc_next + a->imm) & 0= x3)) { + /* misaligned */ + gen_exception_inst_addr_mis(ctx); + } else { + gen_goto_tb(ctx, 0, ctx->base.pc_next + a->imm); + } + ctx->base.is_jmp =3D DISAS_NORETURN; + + tcg_temp_free(source1); + tcg_temp_free(source2); + return true; } =20 +static bool trans_beq(DisasContext *ctx, arg_beq *a) +{ + return gen_branch(ctx, a, TCG_COND_EQ); +} + static bool trans_bne(DisasContext *ctx, arg_bne *a) { - gen_branch(ctx->env, ctx, OPC_RISC_BNE, a->rs1, a->rs2, a->imm); - return true; + return gen_branch(ctx, a, TCG_COND_NE); } =20 static bool trans_blt(DisasContext *ctx, arg_blt *a) { - gen_branch(ctx->env, ctx, OPC_RISC_BLT, a->rs1, a->rs2, a->imm); - return true; + return gen_branch(ctx, a, TCG_COND_LT); } =20 static bool trans_bge(DisasContext *ctx, arg_bge *a) { - gen_branch(ctx->env, ctx, OPC_RISC_BGE, a->rs1, a->rs2, a->imm); - return true; + return gen_branch(ctx, a, TCG_COND_GE); } =20 static bool trans_bltu(DisasContext *ctx, arg_bltu *a) { - gen_branch(ctx->env, ctx, OPC_RISC_BLTU, a->rs1, a->rs2, a->imm); - return true; + return gen_branch(ctx, a, TCG_COND_LTU); } =20 static bool trans_bgeu(DisasContext *ctx, arg_bgeu *a) { - - gen_branch(ctx->env, ctx, OPC_RISC_BGEU, a->rs1, a->rs2, a->imm); - return true; + return gen_branch(ctx, a, TCG_COND_GEU); } =20 static bool trans_lb(DisasContext *ctx, arg_lb *a) diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 1f59b02c84..a0e96b94a9 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -489,53 +489,6 @@ static void gen_jal(CPURISCVState *env, DisasContext *= ctx, int rd, ctx->base.is_jmp =3D DISAS_NORETURN; } =20 -static void gen_branch(CPURISCVState *env, DisasContext *ctx, uint32_t opc, - int rs1, int rs2, target_long bimm) -{ - TCGLabel *l =3D gen_new_label(); - TCGv source1, source2; - source1 =3D tcg_temp_new(); - source2 =3D tcg_temp_new(); - gen_get_gpr(source1, rs1); - gen_get_gpr(source2, rs2); - - switch (opc) { - case OPC_RISC_BEQ: - tcg_gen_brcond_tl(TCG_COND_EQ, source1, source2, l); - break; - case OPC_RISC_BNE: - tcg_gen_brcond_tl(TCG_COND_NE, source1, source2, l); - break; - case OPC_RISC_BLT: - tcg_gen_brcond_tl(TCG_COND_LT, source1, source2, l); - break; - case OPC_RISC_BGE: - tcg_gen_brcond_tl(TCG_COND_GE, source1, source2, l); - break; - case OPC_RISC_BLTU: - tcg_gen_brcond_tl(TCG_COND_LTU, source1, source2, l); - break; - case OPC_RISC_BGEU: - tcg_gen_brcond_tl(TCG_COND_GEU, source1, source2, l); - break; - default: - gen_exception_illegal(ctx); - return; - } - tcg_temp_free(source1); - tcg_temp_free(source2); - - gen_goto_tb(ctx, 1, ctx->pc_succ_insn); - gen_set_label(l); /* branch taken */ - if (!riscv_has_ext(env, RVC) && ((ctx->base.pc_next + bimm) & 0x3)) { - /* misaligned */ - gen_exception_inst_addr_mis(ctx); - } else { - gen_goto_tb(ctx, 0, ctx->base.pc_next + bimm); - } - ctx->base.is_jmp =3D DISAS_NORETURN; -} - static void gen_load(DisasContext *ctx, uint32_t opc, int rd, int rs1, target_long imm) { --=20 2.20.1