From patchwork Fri May 26 07:21:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiwei Li X-Patchwork-Id: 13256498 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 5580CC77B7C for ; Fri, 26 May 2023 07:22:50 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q2Rls-000696-6e; Fri, 26 May 2023 03:21:56 -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 1q2Rlk-00062Z-Kd; Fri, 26 May 2023 03:21:48 -0400 Received: from smtp25.cstnet.cn ([159.226.251.25] helo=cstnet.cn) by eggs.gnu.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1q2Rlg-0002Hc-PA; Fri, 26 May 2023 03:21:48 -0400 Received: from localhost.localdomain (unknown [61.165.37.98]) by APP-05 (Coremail) with SMTP id zQCowACnrYn3XXBkJSddBQ--.47689S3; Fri, 26 May 2023 15:21:29 +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 v3 1/7] target/riscv: Fix target address to update badaddr Date: Fri, 26 May 2023 15:21:18 +0800 Message-Id: <20230526072124.298466-2-liweiwei@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230526072124.298466-1-liweiwei@iscas.ac.cn> References: <20230526072124.298466-1-liweiwei@iscas.ac.cn> MIME-Version: 1.0 X-CM-TRANSID: zQCowACnrYn3XXBkJSddBQ--.47689S3 X-Coremail-Antispam: 1UD129KBjvJXoW3XF4DJryxZrWUArWxuw1Dtrb_yoW7CFyUpF 1fCw17WrWDJFZavaySgF4jyF15tF4S9rWjkwsaywn5Ka13trW5GFnrtrWakFyUuFZ5Xr1Y 9FWDAF1jvw4jqa7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPC14x267AKxVW5JVWrJwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jr4l82xGYIkIc2 x26xkF7I0E14v26r1I6r4UM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1l84 ACjcxK6I8E87Iv67AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVCY1x0267AKxVWxJr0_GcWl e2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI 8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8JwAC jcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2Y2ka0x kIwI1lc2xSY4AK67AK6r4xMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4U MI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67 AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0 cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z2 80aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI 43ZEXa7VUjWv35UUUUU== X-Originating-IP: [61.165.37.98] 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, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.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/insn_trans/trans_rvzce.c.inc | 4 ++-- target/riscv/translate.c | 21 ++++++++++----------- 3 files changed, 28 insertions(+), 20 deletions(-) diff --git a/target/riscv/insn_trans/trans_rvi.c.inc b/target/riscv/insn_trans/trans_rvi.c.inc index e33f63bea1..b092b8c536 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) && !ctx->cfg_ptr->ext_zca) { 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); @@ -169,10 +175,13 @@ static bool gen_branch(DisasContext *ctx, arg_b *a, TCGCond cond) gen_set_label(l); /* branch taken */ + next_pc = ctx->base.pc_next + a->imm; if (!has_ext(ctx, RVC) && !ctx->cfg_ptr->ext_zca && - ((ctx->base.pc_next + a->imm) & 0x3)) { + (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/insn_trans/trans_rvzce.c.inc b/target/riscv/insn_trans/trans_rvzce.c.inc index a727169a4b..5732d782f7 100644 --- a/target/riscv/insn_trans/trans_rvzce.c.inc +++ b/target/riscv/insn_trans/trans_rvzce.c.inc @@ -202,8 +202,8 @@ static bool gen_pop(DisasContext *ctx, arg_cmpp *a, bool ret, bool ret_val) } if (ret) { - TCGv ret_addr = get_gpr(ctx, xRA, EXT_NONE); - gen_set_pc(ctx, ret_addr); + TCGv ret_addr = get_gpr(ctx, xRA, EXT_SIGN); + tcg_gen_mov_tl(cpu_pc, ret_addr); tcg_gen_lookup_and_goto_ptr(); ctx->base.is_jmp = DISAS_NORETURN; } diff --git a/target/riscv/translate.c b/target/riscv/translate.c index a889454137..1b93de66ab 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) && !ctx->cfg_ptr->ext_zca) { 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; } }