From patchwork Fri Feb 22 14:10:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bastian Koppelmann X-Patchwork-Id: 10826421 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2CECE1390 for ; Fri, 22 Feb 2019 15:11:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1B5253286F for ; Fri, 22 Feb 2019 15:11:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0DC7632871; Fri, 22 Feb 2019 15:11:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8B1D73286F for ; Fri, 22 Feb 2019 15:11:54 +0000 (UTC) Received: from localhost ([127.0.0.1]:52400 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gxCUT-0003mq-KU for patchwork-qemu-devel@patchwork.kernel.org; Fri, 22 Feb 2019 10:11:53 -0500 Received: from eggs.gnu.org ([209.51.188.92]:41803) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gxBaA-0006sG-Sj for qemu-devel@nongnu.org; Fri, 22 Feb 2019 09:13:44 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gxBa9-0001gL-64 for qemu-devel@nongnu.org; Fri, 22 Feb 2019 09:13:42 -0500 Received: from mail.uni-paderborn.de ([131.234.142.9]:41604) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gxBZm-0006yI-Ma; Fri, 22 Feb 2019 09:13:23 -0500 Received: from tweenies.uni-paderborn.de ([131.234.189.21] helo=localhost.localdomain) by mail.uni-paderborn.de with esmtp (Exim 4.89 telepax) id 1gxBYE-0001w4-5G; Fri, 22 Feb 2019 15:11:43 +0100 Received: from mail.uni-paderborn.de by tweenies with queue id 3137449-4; Fri, 22 Feb 2019 14:11:39 GMT X-Envelope-From: From: Bastian Koppelmann To: sagark@eecs.berkeley.edu, palmer@sifive.com, kbastian@mail.uni-paderborn.de Date: Fri, 22 Feb 2019 15:10:10 +0100 Message-Id: <20190222141024.22217-21-kbastian@mail.uni-paderborn.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190222141024.22217-1-kbastian@mail.uni-paderborn.de> References: <20190222141024.22217-1-kbastian@mail.uni-paderborn.de> MIME-Version: 1.0 X-PMX-Version: 6.4.6.2792898, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2019.2.22.135717, AntiVirus-Engine: 5.58.0, AntiVirus-Data: 2019.2.22.5580002 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 v8 20/34] 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: qemu-riscv@nongnu.org, peer.adelt@hni.uni-paderborn.de, richard.henderson@linaro.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP 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 --- v7 -> v8: - riscv_has_ext -> has_ext 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_trans/trans_rvi.inc.c index 631a88906b..ae4b0a2bcb 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; } -static bool trans_beq(DisasContext *ctx, arg_beq *a) +static bool gen_branch(DisasContext *ctx, arg_b *a, TCGCond cond) { - gen_branch(ctx, OPC_RISC_BEQ, a->rs1, a->rs2, a->imm); + TCGLabel *l = gen_new_label(); + TCGv source1, source2; + source1 = tcg_temp_new(); + source2 = 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 (!has_ext(ctx, RVC) && ((ctx->base.pc_next + a->imm) & 0x3)) { + /* misaligned */ + gen_exception_inst_addr_mis(ctx); + } else { + gen_goto_tb(ctx, 0, ctx->base.pc_next + a->imm); + } + ctx->base.is_jmp = DISAS_NORETURN; + + tcg_temp_free(source1); + tcg_temp_free(source2); + return true; } +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, OPC_RISC_BNE, a->rs1, a->rs2, a->imm); - return true; + return gen_branch(ctx, a, TCG_COND_NE); } static bool trans_blt(DisasContext *ctx, arg_blt *a) { - gen_branch(ctx, OPC_RISC_BLT, a->rs1, a->rs2, a->imm); - return true; + return gen_branch(ctx, a, TCG_COND_LT); } static bool trans_bge(DisasContext *ctx, arg_bge *a) { - gen_branch(ctx, OPC_RISC_BGE, a->rs1, a->rs2, a->imm); - return true; + return gen_branch(ctx, a, TCG_COND_GE); } static bool trans_bltu(DisasContext *ctx, arg_bltu *a) { - gen_branch(ctx, OPC_RISC_BLTU, a->rs1, a->rs2, a->imm); - return true; + return gen_branch(ctx, a, TCG_COND_LTU); } static bool trans_bgeu(DisasContext *ctx, arg_bgeu *a) { - - gen_branch(ctx, OPC_RISC_BGEU, a->rs1, a->rs2, a->imm); - return true; + return gen_branch(ctx, a, TCG_COND_GEU); } static bool trans_lb(DisasContext *ctx, arg_lb *a) diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 9dee2ec242..a3d5cdbad8 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -531,53 +531,6 @@ static void gen_jal(DisasContext *ctx, int rd, target_ulong imm) ctx->base.is_jmp = DISAS_NORETURN; } -static void gen_branch(DisasContext *ctx, uint32_t opc, int rs1, int rs2, - target_long bimm) -{ - TCGLabel *l = gen_new_label(); - TCGv source1, source2; - source1 = tcg_temp_new(); - source2 = 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 (!has_ext(ctx, 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 = DISAS_NORETURN; -} - static void gen_load(DisasContext *ctx, uint32_t opc, int rd, int rs1, target_long imm) {