From nobody Thu Oct 16 04:49:51 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1760474268; cv=none; d=zohomail.com; s=zohoarc; b=ekGyEWau5o3W2VsSDHRdEHWOglsOMOjlwK+OWzbCrEJ1Je5zD3k8wUzIXRk5g9UCrQl/T5SKL7m+OsjlH+BPneBz11yjj0HGhh6yv6lS+YKMdFsQJZuvfoSQyPlpeCrzGEbndqqXkTfBTj2xrrzZWWq0tnJ98uuV76OcMeXdsSc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1760474268; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=6S65Lhu8jERU6fAWNnNEwXsZmOdy0t/V2fdRUm8mvpg=; b=XwJzG/iwWYAFTQkUqKKTEKWF5c4cEuffjnTlzl8RXsPg6Inu9ctBDH1kYaoNTp8NVw+SOVrnxxxB9upI0JRKOgBikN7R8FYvOWdX36gi2D14q2QrbkGQEpPrR/I39aymZcnZ081K5m/6bYyJ9P/10s5OVFdN1hhaGdjlVAOvXxM= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1760474268475869.8260188888768; Tue, 14 Oct 2025 13:37:48 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1v8liH-00012V-VM; Tue, 14 Oct 2025 16:33:42 -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 1v8liG-000120-DL for qemu-devel@nongnu.org; Tue, 14 Oct 2025 16:33:40 -0400 Received: from rev.ng ([94.130.142.21]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1v8liA-0000TJ-Kh for qemu-devel@nongnu.org; Tue, 14 Oct 2025 16:33:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=rev.ng; s=dkim; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive:List-Unsubscribe:List-Unsubscribe-Post: List-Help; bh=6S65Lhu8jERU6fAWNnNEwXsZmOdy0t/V2fdRUm8mvpg=; b=hYzfHkgdmGiAGEC jBqIvm4qKn9KB5T65K0pcRHHde8nt9AAQW/Asdb8Un5/0d82YhKgR4btYxIbrrT3uVG/XRHtIXuKf Zwfxtp12mCCUehYxAta7FJoomIQbMBtUy/OzIZlvF2hEjnReCk7X+IEmRHxZaTG6w90bgY4DkEq9A H0=; To: qemu-devel@nongnu.org Cc: pierrick.bouvier@linaro.org, philmd@linaro.org, alistair.francis@wdc.com, palmer@dabbelt.com Subject: [PATCH v3 18/34] target/riscv: Fix size of ssp Date: Tue, 14 Oct 2025 22:34:55 +0200 Message-ID: <20251014203512.26282-19-anjo@rev.ng> In-Reply-To: <20251014203512.26282-1-anjo@rev.ng> References: <20251014203512.26282-1-anjo@rev.ng> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.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; Received-SPF: pass client-ip=94.130.142.21; envelope-from=anjo@rev.ng; helo=rev.ng X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no 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: , Reply-to: Anton Johansson From: Anton Johansson via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1760474269453158500 Content-Type: text/plain; charset="utf-8" As ssp holds a pointer, fix to 64 bits in size and make sure stores from TCG use the correct size to avoid problems on big endian hosts. Note, the cpu/ssp VMSTATE version is bumped, breaking migration from older versions. Signed-off-by: Anton Johansson Reviewed-by: Pierrick Bouvier --- target/riscv/cpu.h | 2 +- target/riscv/machine.c | 6 +++--- target/riscv/insn_trans/trans_rvzicfiss.c.inc | 18 +++++++++++++----- 3 files changed, 17 insertions(+), 9 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index d7a41e6db5..2a71393118 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -255,7 +255,7 @@ struct CPUArchState { /* elp state for zicfilp extension */ bool elp; /* shadow stack register for zicfiss extension */ - target_ulong ssp; + uint64_t ssp; /* env place holder for extra word 2 during unwind */ target_ulong excp_uw2; /* sw check code for sw check exception */ diff --git a/target/riscv/machine.c b/target/riscv/machine.c index 1cf744c5f0..c55794c554 100644 --- a/target/riscv/machine.c +++ b/target/riscv/machine.c @@ -390,11 +390,11 @@ static bool ssp_needed(void *opaque) =20 static const VMStateDescription vmstate_ssp =3D { .name =3D "cpu/ssp", - .version_id =3D 1, - .minimum_version_id =3D 1, + .version_id =3D 2, + .minimum_version_id =3D 2, .needed =3D ssp_needed, .fields =3D (const VMStateField[]) { - VMSTATE_UINTTL(env.ssp, RISCVCPU), + VMSTATE_UINT64(env.ssp, RISCVCPU), VMSTATE_END_OF_LIST() } }; diff --git a/target/riscv/insn_trans/trans_rvzicfiss.c.inc b/target/riscv/i= nsn_trans/trans_rvzicfiss.c.inc index f4a1c12ca0..fa1489037d 100644 --- a/target/riscv/insn_trans/trans_rvzicfiss.c.inc +++ b/target/riscv/insn_trans/trans_rvzicfiss.c.inc @@ -32,7 +32,9 @@ static bool trans_sspopchk(DisasContext *ctx, arg_sspopch= k *a) TCGLabel *skip =3D gen_new_label(); uint32_t tmp =3D (get_xl(ctx) =3D=3D MXL_RV64) ? 8 : 4; TCGv data =3D tcg_temp_new(); - tcg_gen_ld_tl(addr, tcg_env, offsetof(CPURISCVState, ssp)); + TCGv_i64 wide_addr =3D tcg_temp_new_i64(); + tcg_gen_ld_i64(wide_addr, tcg_env, offsetof(CPURISCVState, ssp)); + tcg_gen_trunc_i64_tl(addr, wide_addr); decode_save_opc(ctx, RISCV_UW2_ALWAYS_STORE_AMO); tcg_gen_qemu_ld_tl(data, addr, SS_MMU_INDEX(ctx), mxl_memop(ctx) | MO_ALIGN); @@ -45,7 +47,8 @@ static bool trans_sspopchk(DisasContext *ctx, arg_sspopch= k *a) tcg_constant_i32(RISCV_EXCP_SW_CHECK)); gen_set_label(skip); tcg_gen_addi_tl(addr, addr, tmp); - tcg_gen_st_tl(addr, tcg_env, offsetof(CPURISCVState, ssp)); + tcg_gen_ext_tl_i64(wide_addr, addr); + tcg_gen_st_i64(wide_addr, tcg_env, offsetof(CPURISCVState, ssp)); =20 return true; } @@ -59,12 +62,15 @@ static bool trans_sspush(DisasContext *ctx, arg_sspush = *a) TCGv addr =3D tcg_temp_new(); int tmp =3D (get_xl(ctx) =3D=3D MXL_RV64) ? -8 : -4; TCGv data =3D get_gpr(ctx, a->rs2, EXT_NONE); + TCGv_i64 wide_addr =3D tcg_temp_new_i64(); decode_save_opc(ctx, RISCV_UW2_ALWAYS_STORE_AMO); - tcg_gen_ld_tl(addr, tcg_env, offsetof(CPURISCVState, ssp)); + tcg_gen_ld_i64(wide_addr, tcg_env, offsetof(CPURISCVState, ssp)); + tcg_gen_trunc_i64_tl(addr, wide_addr); tcg_gen_addi_tl(addr, addr, tmp); tcg_gen_qemu_st_tl(data, addr, SS_MMU_INDEX(ctx), mxl_memop(ctx) | MO_ALIGN); - tcg_gen_st_tl(addr, tcg_env, offsetof(CPURISCVState, ssp)); + tcg_gen_ext_tl_i64(wide_addr, addr); + tcg_gen_st_i64(wide_addr, tcg_env, offsetof(CPURISCVState, ssp)); =20 return true; } @@ -76,7 +82,9 @@ static bool trans_ssrdp(DisasContext *ctx, arg_ssrdp *a) } =20 TCGv dest =3D dest_gpr(ctx, a->rd); - tcg_gen_ld_tl(dest, tcg_env, offsetof(CPURISCVState, ssp)); + TCGv_i64 wide_addr =3D tcg_temp_new_i64(); + tcg_gen_ld_i64(wide_addr, tcg_env, offsetof(CPURISCVState, ssp)); + tcg_gen_trunc_i64_tl(dest, wide_addr); gen_set_gpr(ctx, a->rd, dest); =20 return true; --=20 2.51.0