From patchwork Sun Apr 9 10:53:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiwei Li X-Patchwork-Id: 1767008 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.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-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4PvTWp37rmz1yZx for ; Sun, 9 Apr 2023 20:54:45 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1plSfu-0000Di-T2; Sun, 09 Apr 2023 06:53:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1plSfp-0000AT-Gg; Sun, 09 Apr 2023 06:53:30 -0400 Received: from smtp25.cstnet.cn ([159.226.251.25] helo=cstnet.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1plSfl-0002Xe-EX; Sun, 09 Apr 2023 06:53:28 -0400 Received: from localhost.localdomain (unknown [180.175.29.170]) by APP-05 (Coremail) with SMTP id zQCowAAHHhYUmTJkVyANEA--.55439S3; Sun, 09 Apr 2023 18:53:10 +0800 (CST) From: Weiwei Li To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, alistair.francis@wdc.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, wangjunqiang@iscas.ac.cn, lazyparser@gmail.com, Weiwei Li , Richard Henderson Subject: [PATCH 1/7] target/riscv: Fix target address to update badaddr Date: Sun, 9 Apr 2023 18:53:00 +0800 Message-Id: <20230409105306.28575-2-liweiwei@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230409105306.28575-1-liweiwei@iscas.ac.cn> References: <20230409105306.28575-1-liweiwei@iscas.ac.cn> MIME-Version: 1.0 X-CM-TRANSID: zQCowAAHHhYUmTJkVyANEA--.55439S3 X-Coremail-Antispam: 1UD129KBjvJXoWxurykJF4kGrWxJw15Kr1rJFb_yoWrKF1kpF 13Cw17urWDJFZIvay0ga1jkF15Gr4SgrWUKw4Skwn5Ka13trW5CrnrtayakFyj9FZ5Xr4Y 9FZ8AF1j9w4jqa7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUP014x267AKxVW5JVWrJwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jr4l82xGYIkIc2 x26xkF7I0E14v26r1I6r4UM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_JFI_Gr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1l84 ACjcxK6I8E87Iv67AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVCY1x0267AKxVW8Jr0_Cr1U M2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjx v20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1l F7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxan2 IY04v7MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAF wI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCIc4 0Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AK xVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr 1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7VUbec_DUU UUU== X-Originating-IP: [180.175.29.170] X-CM-SenderInfo: 5olzvxxzhlqxpvfd2hldfou0/ Received-SPF: pass client-ip=159.226.251.25; envelope-from=liweiwei@iscas.ac.cn; helo=cstnet.cn X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, 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: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Compute the target address before storing it into badaddr when mis-aligned exception is triggered. Use a target_pc temp to store the target address to avoid the confusing operation that udpate target address into cpu_pc before misalign check, then update it into badaddr and restore cpu_pc to current pc if exception is triggered. Signed-off-by: Weiwei Li Signed-off-by: Junqiang Wang Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis --- target/riscv/insn_trans/trans_rvi.c.inc | 23 ++++++++++++++++------- target/riscv/translate.c | 21 ++++++++++----------- 2 files changed, 26 insertions(+), 18 deletions(-) diff --git a/target/riscv/insn_trans/trans_rvi.c.inc b/target/riscv/insn_trans/trans_rvi.c.inc index 4ad54e8a49..cc72864d32 100644 --- a/target/riscv/insn_trans/trans_rvi.c.inc +++ b/target/riscv/insn_trans/trans_rvi.c.inc @@ -51,25 +51,30 @@ static bool trans_jal(DisasContext *ctx, arg_jal *a) static bool trans_jalr(DisasContext *ctx, arg_jalr *a) { TCGLabel *misaligned = NULL; + TCGv target_pc = tcg_temp_new(); - tcg_gen_addi_tl(cpu_pc, get_gpr(ctx, a->rs1, EXT_NONE), a->imm); - tcg_gen_andi_tl(cpu_pc, cpu_pc, (target_ulong)-2); + tcg_gen_addi_tl(target_pc, get_gpr(ctx, a->rs1, EXT_NONE), a->imm); + tcg_gen_andi_tl(target_pc, target_pc, (target_ulong)-2); + + if (get_xl(ctx) == MXL_RV32) { + tcg_gen_ext32s_tl(target_pc, target_pc); + } - gen_set_pc(ctx, cpu_pc); if (!has_ext(ctx, RVC)) { TCGv t0 = tcg_temp_new(); misaligned = gen_new_label(); - tcg_gen_andi_tl(t0, cpu_pc, 0x2); + tcg_gen_andi_tl(t0, target_pc, 0x2); tcg_gen_brcondi_tl(TCG_COND_NE, t0, 0x0, misaligned); } gen_set_gpri(ctx, a->rd, ctx->pc_succ_insn); + tcg_gen_mov_tl(cpu_pc, target_pc); lookup_and_goto_ptr(ctx); if (misaligned) { gen_set_label(misaligned); - gen_exception_inst_addr_mis(ctx); + gen_exception_inst_addr_mis(ctx, target_pc); } ctx->base.is_jmp = DISAS_NORETURN; @@ -153,6 +158,7 @@ static bool gen_branch(DisasContext *ctx, arg_b *a, TCGCond cond) TCGLabel *l = gen_new_label(); TCGv src1 = get_gpr(ctx, a->rs1, EXT_SIGN); TCGv src2 = get_gpr(ctx, a->rs2, EXT_SIGN); + target_ulong next_pc; if (get_xl(ctx) == MXL_RV128) { TCGv src1h = get_gprh(ctx, a->rs1); @@ -169,9 +175,12 @@ static bool gen_branch(DisasContext *ctx, arg_b *a, TCGCond cond) gen_set_label(l); /* branch taken */ - if (!has_ext(ctx, RVC) && ((ctx->base.pc_next + a->imm) & 0x3)) { + next_pc = ctx->base.pc_next + a->imm; + if (!has_ext(ctx, RVC) && (next_pc & 0x3)) { /* misaligned */ - gen_exception_inst_addr_mis(ctx); + TCGv target_pc = tcg_temp_new(); + gen_pc_plus_diff(target_pc, ctx, next_pc); + gen_exception_inst_addr_mis(ctx, target_pc); } else { gen_goto_tb(ctx, 0, ctx->base.pc_next + a->imm); } diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 0ee8ee147d..1c8eae86c5 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -222,21 +222,18 @@ static void decode_save_opc(DisasContext *ctx) ctx->insn_start = NULL; } -static void gen_set_pc_imm(DisasContext *ctx, target_ulong dest) +static void gen_pc_plus_diff(TCGv target, DisasContext *ctx, + target_ulong dest) { if (get_xl(ctx) == MXL_RV32) { dest = (int32_t)dest; } - tcg_gen_movi_tl(cpu_pc, dest); + tcg_gen_movi_tl(target, dest); } -static void gen_set_pc(DisasContext *ctx, TCGv dest) +static void gen_set_pc_imm(DisasContext *ctx, target_ulong dest) { - if (get_xl(ctx) == MXL_RV32) { - tcg_gen_ext32s_tl(cpu_pc, dest); - } else { - tcg_gen_mov_tl(cpu_pc, dest); - } + gen_pc_plus_diff(cpu_pc, ctx, dest); } static void generate_exception(DisasContext *ctx, int excp) @@ -257,9 +254,9 @@ static void gen_exception_illegal(DisasContext *ctx) } } -static void gen_exception_inst_addr_mis(DisasContext *ctx) +static void gen_exception_inst_addr_mis(DisasContext *ctx, TCGv target) { - tcg_gen_st_tl(cpu_pc, cpu_env, offsetof(CPURISCVState, badaddr)); + tcg_gen_st_tl(target, cpu_env, offsetof(CPURISCVState, badaddr)); generate_exception(ctx, RISCV_EXCP_INST_ADDR_MIS); } @@ -551,7 +548,9 @@ static void gen_jal(DisasContext *ctx, int rd, target_ulong imm) next_pc = ctx->base.pc_next + imm; if (!has_ext(ctx, RVC)) { if ((next_pc & 0x3) != 0) { - gen_exception_inst_addr_mis(ctx); + TCGv target_pc = tcg_temp_new(); + gen_pc_plus_diff(target_pc, ctx, next_pc); + gen_exception_inst_addr_mis(ctx, target_pc); return; } }