From patchwork Fri Aug 30 16:47:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Deepak Gupta X-Patchwork-Id: 13785361 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 21AD0CA0EFD for ; Fri, 30 Aug 2024 16:49:35 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sk4ng-00028z-G1; Fri, 30 Aug 2024 12:48:40 -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 1sk4ne-00021A-QS for qemu-devel@nongnu.org; Fri, 30 Aug 2024 12:48:38 -0400 Received: from mail-pg1-x52b.google.com ([2607:f8b0:4864:20::52b]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sk4nV-00071P-EH for qemu-devel@nongnu.org; Fri, 30 Aug 2024 12:48:38 -0400 Received: by mail-pg1-x52b.google.com with SMTP id 41be03b00d2f7-7b8884631c4so883825a12.2 for ; Fri, 30 Aug 2024 09:48:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1725036508; x=1725641308; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=/V7j67hKGbRUzoBxyLSlhAS+t9Qx9yk4gZpzpdmLms0=; b=1dn20cn9Y4+g3BrCMir9E/a0CI7x4cmcx3Sg9/xN6zvKbjErNTLuC9DQ/BxU3c7qyh wbU4w2xq+9peycOwIF8KJowofDzDMihbE7CNC7CqykrTg1gtZJjftXrwv6RxcVv6TkXa 1TuYecretmdIp6WatiQ/n6wKArxGndunDVhm76NkkcSYAR1hdV6iZZcALUWwcQ4g/SBd dZ40EUQmJ07v6xtuwUayxXG2YpE4lGiCDXfrWaI7Z1YEkaUKK6Z7AsHhP9OijJ0+IlQx TsTdjf/pgwxJRzv21eBBFWuG7dxjCa3E58ZnUErqSAmTXMTWWbY4z0DkKUew8fTX2F3N 3Gcw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725036508; x=1725641308; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=/V7j67hKGbRUzoBxyLSlhAS+t9Qx9yk4gZpzpdmLms0=; b=Nv35zcy5vDYGIBLD2pPW54hmsAK7jCgIlEJsIhyNNfnJxfaIaLjeCy84qAKkkCzQDX bE+Q27IdlHtT6GgNH3HWDvOvR+l1VIDYDAwh3g2/UgKVaurdj873HKVTEkRpxKQAewN2 c5BVKRZc+hzkwwDrFtmFtv5du3YrWko5/SG3/mOu9ctlOFnPwwh0Xlc5jjxOausX6uoY IB/m2DmGaFVBZCdHFSzgn2BU9p5WGt9LambCg0dpvHeTdThklugByjHF6hrkwf0nixml dro+7trYeLTYgkJZjiulNaFidkaTvPdzx+diibPzviaFJvBOZmxQsXlBaJdNyq2og0ir uU8Q== X-Forwarded-Encrypted: i=1; AJvYcCX1rPa68O8WC6tnTCP0fSsjUjoGmZxX7ZtXtr7h3cYnHOOscSSa4vsMttiajUlNIkfBNhQ4odh3xEjS@nongnu.org X-Gm-Message-State: AOJu0YzU8omB8CrxQviaG2dD33dur0WAxleRximFc1MLAqgn0IW5LEBY zC04XulJzhPoTeLJftCJJu5QEZFZvG7ThheqhLMqcDjW0Im4nI8XVT+djJHBw7M= X-Google-Smtp-Source: AGHT+IE72QMYCU+jds73Rhk/XY6lrblZO95IHcgdCUegJvOvlycnG6vMx52y5gSMhQ4B22sUHzY5TQ== X-Received: by 2002:a17:90b:180f:b0:2d3:c65c:eb91 with SMTP id 98e67ed59e1d1-2d856391fa8mr7481575a91.32.1725036507907; Fri, 30 Aug 2024 09:48:27 -0700 (PDT) Received: from debug.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2d8445e813dsm6591257a91.17.2024.08.30.09.48.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Aug 2024 09:48:27 -0700 (PDT) From: Deepak Gupta To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, Alistair.Francis@wdc.com, bmeng.cn@gmail.com, liwei1518@gmail.com, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, jim.shu@sifive.com, andy.chiu@sifive.com, kito.cheng@sifive.com, Deepak Gupta , Alistair Francis Subject: [PATCH v13 18/20] disas/riscv: enable disassembly for zicfiss instructions Date: Fri, 30 Aug 2024 09:47:54 -0700 Message-ID: <20240830164756.1154517-19-debug@rivosinc.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240830164756.1154517-1-debug@rivosinc.com> References: <20240830164756.1154517-1-debug@rivosinc.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::52b; envelope-from=debug@rivosinc.com; helo=mail-pg1-x52b.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable 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 Enable disassembly for sspush, sspopchk, ssrdp & ssamoswap. Disasembly is only enabled if zimop and zicfiss ext is set to true. Signed-off-by: Deepak Gupta Acked-by: Alistair Francis --- disas/riscv.c | 40 +++++++++++++++++++++++++++++++++++++++- disas/riscv.h | 1 + 2 files changed, 40 insertions(+), 1 deletion(-) diff --git a/disas/riscv.c b/disas/riscv.c index c7c92acef7..5eafb7f7f3 100644 --- a/disas/riscv.c +++ b/disas/riscv.c @@ -975,6 +975,11 @@ typedef enum { rv_op_amocas_b = 944, rv_op_amocas_h = 945, rv_op_lpad = 946, + rv_op_sspush = 947, + rv_op_sspopchk = 948, + rv_op_ssrdp = 949, + rv_op_ssamoswap_w = 950, + rv_op_ssamoswap_d = 951, } rv_op; /* register names */ @@ -2234,6 +2239,11 @@ const rv_opcode_data rvi_opcode_data[] = { { "amocas.b", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 }, { "amocas.h", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 }, { "lpad", rv_codec_lp, rv_fmt_imm, NULL, 0, 0, 0 }, + { "sspush", rv_codec_r, rv_fmt_rs2, NULL, 0, 0, 0 }, + { "sspopchk", rv_codec_r, rv_fmt_rs1, NULL, 0, 0, 0 }, + { "ssrdp", rv_codec_r, rv_fmt_rd, NULL, 0, 0, 0 }, + { "ssamoswap.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 }, + { "ssamoswap.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 }, }; /* CSR names */ @@ -2251,6 +2261,7 @@ static const char *csr_name(int csrno) case 0x0009: return "vxsat"; case 0x000a: return "vxrm"; case 0x000f: return "vcsr"; + case 0x0011: return "ssp"; case 0x0015: return "seed"; case 0x0017: return "jvt"; case 0x0040: return "uscratch"; @@ -3077,6 +3088,8 @@ static void decode_inst_opcode(rv_decode *dec, rv_isa isa) case 66: op = rv_op_amoor_w; break; case 67: op = rv_op_amoor_d; break; case 68: op = rv_op_amoor_q; break; + case 74: op = rv_op_ssamoswap_w; break; + case 75: op = rv_op_ssamoswap_d; break; case 96: op = rv_op_amoand_b; break; case 97: op = rv_op_amoand_h; break; case 98: op = rv_op_amoand_w; break; @@ -4028,7 +4041,7 @@ static void decode_inst_opcode(rv_decode *dec, rv_isa isa) case 3: op = rv_op_csrrc; break; case 4: if (dec->cfg->ext_zimop) { - int imm_mop5, imm_mop3; + int imm_mop5, imm_mop3, reg_num; if ((extract32(inst, 22, 10) & 0b1011001111) == 0b1000000111) { imm_mop5 = deposit32(deposit32(extract32(inst, 20, 2), @@ -4036,11 +4049,36 @@ static void decode_inst_opcode(rv_decode *dec, rv_isa isa) extract32(inst, 26, 2)), 4, 1, extract32(inst, 30, 1)); op = rv_mop_r_0 + imm_mop5; + /* if zicfiss enabled and mop5 is shadow stack */ + if (dec->cfg->ext_zicfiss && + ((imm_mop5 & 0b11100) == 0b11100)) { + /* rs1=0 means ssrdp */ + if ((inst & (0b011111 << 15)) == 0) { + op = rv_op_ssrdp; + } + /* rd=0 means sspopchk */ + reg_num = (inst >> 15) & 0b011111; + if (((inst & (0b011111 << 7)) == 0) && + ((reg_num == 1) || (reg_num == 5))) { + op = rv_op_sspopchk; + } + } } else if ((extract32(inst, 25, 7) & 0b1011001) == 0b1000001) { imm_mop3 = deposit32(extract32(inst, 26, 2), 2, 1, extract32(inst, 30, 1)); op = rv_mop_rr_0 + imm_mop3; + /* if zicfiss enabled and mop3 is shadow stack */ + if (dec->cfg->ext_zicfiss && + ((imm_mop3 & 0b111) == 0b111)) { + /* rs1=0 and rd=0 means sspush */ + reg_num = (inst >> 20) & 0b011111; + if (((inst & (0b011111 << 15)) == 0) && + ((inst & (0b011111 << 7)) == 0) && + ((reg_num == 1) || (reg_num == 5))) { + op = rv_op_sspush; + } + } } } break; diff --git a/disas/riscv.h b/disas/riscv.h index 1182457aff..4895c5a301 100644 --- a/disas/riscv.h +++ b/disas/riscv.h @@ -224,6 +224,7 @@ enum { #define rv_fmt_none "O\t" #define rv_fmt_rs1 "O\t1" +#define rv_fmt_rs2 "O\t2" #define rv_fmt_offset "O\to" #define rv_fmt_pred_succ "O\tp,s" #define rv_fmt_rs1_rs2 "O\t1,2"