From nobody Sat Jun 29 02:16:06 2024 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 1550846779636281.67168465194095; Fri, 22 Feb 2019 06:46:19 -0800 (PST) Received: from localhost ([127.0.0.1]:51957 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gxC5b-0006zp-4h for importer@patchew.org; Fri, 22 Feb 2019 09:46:11 -0500 Received: from eggs.gnu.org ([209.51.188.92]:40542) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gxBYZ-0005J0-FS for qemu-devel@nongnu.org; Fri, 22 Feb 2019 09:12:05 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gxBYP-00078W-Qz for qemu-devel@nongnu.org; Fri, 22 Feb 2019 09:11:58 -0500 Received: from mail.uni-paderborn.de ([131.234.142.9]:53558) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gxBY9-0006Os-Ne; Fri, 22 Feb 2019 09:11:38 -0500 Received: from wormulon.uni-paderborn.de ([131.234.189.22] helo=localhost.localdomain) by mail.uni-paderborn.de with esmtp (Exim 4.89 amazonia) id 1gxBY5-00014Z-7U; Fri, 22 Feb 2019 15:11:33 +0100 Received: from mail.uni-paderborn.de by wormulon with queue id 3169554-5; Fri, 22 Feb 2019 14:11:31 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 15:10:05 +0100 Message-Id: <20190222141024.22217-16-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 Content-Transfer-Encoding: quoted-printable X-PMX-Version: 6.4.6.2792898, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2019.2.22.140616, AntiVirus-Engine: 5.58.0, AntiVirus-Data: 2019.2.19.5580002 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 15/34] target/riscv: Convert RV priv insns to decodetree 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, Alistair Francis , peer.adelt@hni.uni-paderborn.de, richard.henderson@linaro.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" Acked-by: Alistair Francis Reviewed-by: Richard Henderson Signed-off-by: Bastian Koppelmann Signed-off-by: Peer Adelt --- v7 -> v8: - riscv_has_ext -> has_ext - env->ctx->priv_version -> ctx->priv_version target/riscv/insn32.decode | 15 +++ .../riscv/insn_trans/trans_privileged.inc.c | 110 ++++++++++++++++++ target/riscv/translate.c | 57 +-------- 3 files changed, 126 insertions(+), 56 deletions(-) create mode 100644 target/riscv/insn_trans/trans_privileged.inc.c diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index e64b2b5e34..ecc46a50cc 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -57,6 +57,21 @@ @r2_rm ....... ..... ..... ... ..... ....... %rs1 %rm %rd @r2 ....... ..... ..... ... ..... ....... %rs1 %rd =20 +@sfence_vma ....... ..... ..... ... ..... ....... %rs2 %rs1 +@sfence_vm ....... ..... ..... ... ..... ....... %rs1 + + +# *** Privileged Instructions *** +ecall 000000000000 00000 000 00000 1110011 +ebreak 000000000001 00000 000 00000 1110011 +uret 0000000 00010 00000 000 00000 1110011 +sret 0001000 00010 00000 000 00000 1110011 +hret 0010000 00010 00000 000 00000 1110011 +mret 0011000 00010 00000 000 00000 1110011 +wfi 0001000 00101 00000 000 00000 1110011 +sfence_vma 0001001 ..... ..... 000 00000 1110011 @sfence_vma +sfence_vm 0001000 00100 ..... 000 00000 1110011 @sfence_vm + # *** RV32I Base Instruction Set *** lui .................... ..... 0110111 @u auipc .................... ..... 0010111 @u diff --git a/target/riscv/insn_trans/trans_privileged.inc.c b/target/riscv/= insn_trans/trans_privileged.inc.c new file mode 100644 index 0000000000..acb605923e --- /dev/null +++ b/target/riscv/insn_trans/trans_privileged.inc.c @@ -0,0 +1,110 @@ +/* + * RISC-V translation routines for the RISC-V privileged instructions. + * + * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu + * Copyright (c) 2018 Peer Adelt, peer.adelt@hni.uni-paderborn.de + * Bastian Koppelmann, kbastian@mail.uni-paderborn.de + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2 or later, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License f= or + * more details. + * + * You should have received a copy of the GNU General Public License along= with + * this program. If not, see . + */ + +static bool trans_ecall(DisasContext *ctx, arg_ecall *a) +{ + /* always generates U-level ECALL, fixed in do_interrupt handler */ + generate_exception(ctx, RISCV_EXCP_U_ECALL); + tcg_gen_exit_tb(NULL, 0); /* no chaining */ + ctx->base.is_jmp =3D DISAS_NORETURN; + return true; +} + +static bool trans_ebreak(DisasContext *ctx, arg_ebreak *a) +{ + generate_exception(ctx, RISCV_EXCP_BREAKPOINT); + tcg_gen_exit_tb(NULL, 0); /* no chaining */ + ctx->base.is_jmp =3D DISAS_NORETURN; + return true; +} + +static bool trans_uret(DisasContext *ctx, arg_uret *a) +{ + return false; +} + +static bool trans_sret(DisasContext *ctx, arg_sret *a) +{ +#ifndef CONFIG_USER_ONLY + tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next); + + if (has_ext(ctx, RVS)) { + gen_helper_sret(cpu_pc, cpu_env, cpu_pc); + tcg_gen_exit_tb(NULL, 0); /* no chaining */ + ctx->base.is_jmp =3D DISAS_NORETURN; + } else { + return false; + } + return true; +#else + return false; +#endif +} + +static bool trans_hret(DisasContext *ctx, arg_hret *a) +{ + return false; +} + +static bool trans_mret(DisasContext *ctx, arg_mret *a) +{ +#ifndef CONFIG_USER_ONLY + tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next); + gen_helper_mret(cpu_pc, cpu_env, cpu_pc); + tcg_gen_exit_tb(NULL, 0); /* no chaining */ + ctx->base.is_jmp =3D DISAS_NORETURN; + return true; +#else + return false; +#endif +} + +static bool trans_wfi(DisasContext *ctx, arg_wfi *a) +{ +#ifndef CONFIG_USER_ONLY + tcg_gen_movi_tl(cpu_pc, ctx->pc_succ_insn); + gen_helper_wfi(cpu_env); + return true; +#else + return false; +#endif +} + +static bool trans_sfence_vma(DisasContext *ctx, arg_sfence_vma *a) +{ +#ifndef CONFIG_USER_ONLY + if (ctx->priv_ver =3D=3D PRIV_VERSION_1_10_0) { + gen_helper_tlb_flush(cpu_env); + return true; + } +#endif + return false; +} + +static bool trans_sfence_vm(DisasContext *ctx, arg_sfence_vm *a) +{ +#ifndef CONFIG_USER_ONLY + if (ctx->priv_ver <=3D PRIV_VERSION_1_09_1) { + gen_helper_tlb_flush(cpu_env); + return true; + } +#endif + return false; +} diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 2e36deee82..02f64ed8a7 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -772,26 +772,8 @@ static void gen_set_rm(DisasContext *ctx, int rm) static void gen_system(DisasContext *ctx, uint32_t opc, int rd, int rs1, int csr) { - TCGv source1, dest; - source1 =3D tcg_temp_new(); - dest =3D tcg_temp_new(); - gen_get_gpr(source1, rs1); tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next); =20 -#ifndef CONFIG_USER_ONLY - /* Extract funct7 value and check whether it matches SFENCE.VMA */ - if ((opc =3D=3D OPC_RISC_ECALL) && ((csr >> 5) =3D=3D 9)) { - if (ctx->priv_ver =3D=3D PRIV_VERSION_1_10_0) { - /* sfence.vma */ - /* TODO: handle ASID specific fences */ - gen_helper_tlb_flush(cpu_env); - return; - } else { - gen_exception_illegal(ctx); - } - } -#endif - switch (opc) { case OPC_RISC_ECALL: switch (csr) { @@ -806,50 +788,12 @@ static void gen_system(DisasContext *ctx, uint32_t op= c, int rd, int rs1, tcg_gen_exit_tb(NULL, 0); /* no chaining */ ctx->base.is_jmp =3D DISAS_NORETURN; break; -#ifndef CONFIG_USER_ONLY - case 0x002: /* URET */ - gen_exception_illegal(ctx); - break; - case 0x102: /* SRET */ - if (has_ext(ctx, RVS)) { - gen_helper_sret(cpu_pc, cpu_env, cpu_pc); - tcg_gen_exit_tb(NULL, 0); /* no chaining */ - ctx->base.is_jmp =3D DISAS_NORETURN; - } else { - gen_exception_illegal(ctx); - } - break; - case 0x202: /* HRET */ - gen_exception_illegal(ctx); - break; - case 0x302: /* MRET */ - gen_helper_mret(cpu_pc, cpu_env, cpu_pc); - tcg_gen_exit_tb(NULL, 0); /* no chaining */ - ctx->base.is_jmp =3D DISAS_NORETURN; - break; - case 0x7b2: /* DRET */ - gen_exception_illegal(ctx); - break; - case 0x105: /* WFI */ - tcg_gen_movi_tl(cpu_pc, ctx->pc_succ_insn); - gen_helper_wfi(cpu_env); - break; - case 0x104: /* SFENCE.VM */ - if (ctx->priv_ver <=3D PRIV_VERSION_1_09_1) { - gen_helper_tlb_flush(cpu_env); - } else { - gen_exception_illegal(ctx); - } - break; -#endif default: gen_exception_illegal(ctx); break; } break; } - tcg_temp_free(source1); - tcg_temp_free(dest); } =20 static void decode_RV32_64C0(DisasContext *ctx) @@ -1152,6 +1096,7 @@ bool decode_insn32(DisasContext *ctx, uint32_t insn); #include "insn_trans/trans_rva.inc.c" #include "insn_trans/trans_rvf.inc.c" #include "insn_trans/trans_rvd.inc.c" +#include "insn_trans/trans_privileged.inc.c" =20 static void decode_RV32_64G(DisasContext *ctx) { --=20 2.20.1