From patchwork Fri May 26 07:21:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiwei Li X-Patchwork-Id: 13256503 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 2FA2AC77B7C for ; Fri, 26 May 2023 07:24:10 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q2Rlt-0006AT-6J; Fri, 26 May 2023 03:21:57 -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 1q2Rlm-00062q-5D; Fri, 26 May 2023 03:21:53 -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-0002Hf-Mi; Fri, 26 May 2023 03:21:49 -0400 Received: from localhost.localdomain (unknown [61.165.37.98]) by APP-05 (Coremail) with SMTP id zQCowACnrYn3XXBkJSddBQ--.47689S6; Fri, 26 May 2023 15:21:30 +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 4/7] target/riscv: Change gen_set_pc_imm to gen_update_pc Date: Fri, 26 May 2023 15:21:21 +0800 Message-Id: <20230526072124.298466-5-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--.47689S6 X-Coremail-Antispam: 1UD129KBjvJXoW3AFWUZr1UCrW5tF1kZFy7Jrb_yoW7tr4kpr 4Fkr4xKryrXFyrA3WFqFsrAF13Ja15K3y0kwn2ywn3Ja1av3yrWr4DK3Wa9r1UWF48Zrn0 kF4qyasxurW0gFUanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmY14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr 1UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Cr1j 6rxdM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6x IIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_ Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8c xan2IY04v7MxkIecxEwVAFwVW8CwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWU JVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67 kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY 6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42 IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIev Ja73UjIFyTuYvjfUY3kuDUUUU 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 Reduce reliance on absolute values(by passing pc difference) to prepare for PC-relative translation. Signed-off-by: Weiwei Li Signed-off-by: Junqiang Wang Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis --- target/riscv/insn_trans/trans_privileged.c.inc | 2 +- target/riscv/insn_trans/trans_rvi.c.inc | 6 +++--- target/riscv/insn_trans/trans_rvv.c.inc | 4 ++-- target/riscv/insn_trans/trans_rvzawrs.c.inc | 2 +- target/riscv/insn_trans/trans_xthead.c.inc | 2 +- target/riscv/translate.c | 10 +++++----- 6 files changed, 13 insertions(+), 13 deletions(-) diff --git a/target/riscv/insn_trans/trans_privileged.c.inc b/target/riscv/insn_trans/trans_privileged.c.inc index 7c2837194c..3760fb4393 100644 --- a/target/riscv/insn_trans/trans_privileged.c.inc +++ b/target/riscv/insn_trans/trans_privileged.c.inc @@ -112,7 +112,7 @@ static bool trans_wfi(DisasContext *ctx, arg_wfi *a) { #ifndef CONFIG_USER_ONLY decode_save_opc(ctx); - gen_set_pc_imm(ctx, ctx->pc_succ_insn); + gen_update_pc(ctx, ctx->cur_insn_len); gen_helper_wfi(cpu_env); return true; #else diff --git a/target/riscv/insn_trans/trans_rvi.c.inc b/target/riscv/insn_trans/trans_rvi.c.inc index 42c4fc2e52..4de65d126d 100644 --- a/target/riscv/insn_trans/trans_rvi.c.inc +++ b/target/riscv/insn_trans/trans_rvi.c.inc @@ -777,7 +777,7 @@ static bool trans_pause(DisasContext *ctx, arg_pause *a) * PAUSE is a no-op in QEMU, * end the TB and return to main loop */ - gen_set_pc_imm(ctx, ctx->pc_succ_insn); + gen_update_pc(ctx, ctx->cur_insn_len); exit_tb(ctx); ctx->base.is_jmp = DISAS_NORETURN; @@ -801,7 +801,7 @@ static bool trans_fence_i(DisasContext *ctx, arg_fence_i *a) * FENCE_I is a no-op in QEMU, * however we need to end the translation block */ - gen_set_pc_imm(ctx, ctx->pc_succ_insn); + gen_update_pc(ctx, ctx->cur_insn_len); exit_tb(ctx); ctx->base.is_jmp = DISAS_NORETURN; return true; @@ -812,7 +812,7 @@ static bool do_csr_post(DisasContext *ctx) /* The helper may raise ILLEGAL_INSN -- record binv for unwind. */ decode_save_opc(ctx); /* We may have changed important cpu state -- exit to main loop. */ - gen_set_pc_imm(ctx, ctx->pc_succ_insn); + gen_update_pc(ctx, ctx->cur_insn_len); exit_tb(ctx); ctx->base.is_jmp = DISAS_NORETURN; return true; diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc index 6c07eebc52..c2f7527f53 100644 --- a/target/riscv/insn_trans/trans_rvv.c.inc +++ b/target/riscv/insn_trans/trans_rvv.c.inc @@ -169,7 +169,7 @@ static bool do_vsetvl(DisasContext *s, int rd, int rs1, TCGv s2) gen_set_gpr(s, rd, dst); mark_vs_dirty(s); - gen_set_pc_imm(s, s->pc_succ_insn); + gen_update_pc(s, s->cur_insn_len); lookup_and_goto_ptr(s); s->base.is_jmp = DISAS_NORETURN; return true; @@ -188,7 +188,7 @@ static bool do_vsetivli(DisasContext *s, int rd, TCGv s1, TCGv s2) gen_helper_vsetvl(dst, cpu_env, s1, s2); gen_set_gpr(s, rd, dst); mark_vs_dirty(s); - gen_set_pc_imm(s, s->pc_succ_insn); + gen_update_pc(s, s->cur_insn_len); lookup_and_goto_ptr(s); s->base.is_jmp = DISAS_NORETURN; diff --git a/target/riscv/insn_trans/trans_rvzawrs.c.inc b/target/riscv/insn_trans/trans_rvzawrs.c.inc index 8254e7dfe2..32efbff4d5 100644 --- a/target/riscv/insn_trans/trans_rvzawrs.c.inc +++ b/target/riscv/insn_trans/trans_rvzawrs.c.inc @@ -33,7 +33,7 @@ static bool trans_wrs(DisasContext *ctx) /* Clear the load reservation (if any). */ tcg_gen_movi_tl(load_res, -1); - gen_set_pc_imm(ctx, ctx->pc_succ_insn); + gen_update_pc(ctx, ctx->cur_insn_len); tcg_gen_exit_tb(NULL, 0); ctx->base.is_jmp = DISAS_NORETURN; diff --git a/target/riscv/insn_trans/trans_xthead.c.inc b/target/riscv/insn_trans/trans_xthead.c.inc index 3e13b1d74d..da093a4cec 100644 --- a/target/riscv/insn_trans/trans_xthead.c.inc +++ b/target/riscv/insn_trans/trans_xthead.c.inc @@ -999,7 +999,7 @@ static void gen_th_sync_local(DisasContext *ctx) * Emulate out-of-order barriers with pipeline flush * by exiting the translation block. */ - gen_set_pc_imm(ctx, ctx->pc_succ_insn); + gen_update_pc(ctx, ctx->cur_insn_len); tcg_gen_exit_tb(NULL, 0); ctx->base.is_jmp = DISAS_NORETURN; } diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 9716114414..3cff24c51f 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -232,14 +232,14 @@ static void gen_pc_plus_diff(TCGv target, DisasContext *ctx, tcg_gen_movi_tl(target, dest); } -static void gen_set_pc_imm(DisasContext *ctx, target_ulong dest) +static void gen_update_pc(DisasContext *ctx, target_long diff) { - gen_pc_plus_diff(cpu_pc, ctx, dest); + gen_pc_plus_diff(cpu_pc, ctx, ctx->base.pc_next + diff); } static void generate_exception(DisasContext *ctx, int excp) { - gen_set_pc_imm(ctx, ctx->base.pc_next); + gen_update_pc(ctx, 0); gen_helper_raise_exception(cpu_env, tcg_constant_i32(excp)); ctx->base.is_jmp = DISAS_NORETURN; } @@ -291,10 +291,10 @@ static void gen_goto_tb(DisasContext *ctx, int n, target_long diff) */ if (translator_use_goto_tb(&ctx->base, dest) && !ctx->itrigger) { tcg_gen_goto_tb(n); - gen_set_pc_imm(ctx, dest); + gen_update_pc(ctx, diff); tcg_gen_exit_tb(ctx->base.tb, n); } else { - gen_set_pc_imm(ctx, dest); + gen_update_pc(ctx, diff); lookup_and_goto_ptr(ctx); } }