From nobody Sun Sep 28 16:34:24 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=1758698521; cv=none; d=zohomail.com; s=zohoarc; b=eiiGl2ZXLaJaSTPbhvPfE8GAz4ZMVZE2Vx6VHreSgEOEQDUL1eeUmjsfZQ+mxFY8O25XhN2+7hchMlt8R8a88natt/TjxVEUNc2Bzy1s8gfMa9vbrW5rbITDmr5ZVS5mwBoFDFflyft/F/g5kwX7vseSHCp+yz6YUMKI9ZBNnxY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1758698521; 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=jS+5jUWqLf8DzdZREyGhxtYoH1mze7wS+V8aFfit5jY=; b=SLNkQXwoVM5GX7VkrRAzQ/1m8YmQNSiWxEF4UNpye2OO8r0XVHiPfTdJBScFgFHzyHf/he7/Om8oOyTuunjaU2YrDYrm4aRcZgahgWGPPz6bucRMVEY2sZH9rrDh0BioFCFa8YetGxEBuTzV7UoX0djSxDV04GGjJqEoduXmGbU= 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 1758698521557534.1601342714647; Wed, 24 Sep 2025 00:22:01 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1v1JnN-0005b2-1v; Wed, 24 Sep 2025 03:20:09 -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 1v1JnK-0005Zo-A2 for qemu-devel@nongnu.org; Wed, 24 Sep 2025 03:20:06 -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 1v1JnB-0003Q5-Aw for qemu-devel@nongnu.org; Wed, 24 Sep 2025 03:20:05 -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=jS+5jUWqLf8DzdZREyGhxtYoH1mze7wS+V8aFfit5jY=; b=nYiH3bSWuOzhYQs a/p0bGupwL6BxQAOZyQCJEhxWp8nkMHQ/H7qZJswOjcTE7DZ9Oj6P45gR2ZXqdWrgVBj9hJyanY/Q bglAMc0mD72PqWgk1wxrbEMiaY5SrOCrWWtgXSeapwtJCq7DNtHLUeEM1HRvyu8M1rXDNUkxvV6ZE 3E=; To: qemu-devel@nongnu.org Cc: pierrick.bouvier@linaro.org, philmd@linaro.org, alistair.francis@wdc.com, palmer@dabbelt.com Subject: [RFC PATCH 13/34] target/riscv: Fix size of frm and fflags Date: Wed, 24 Sep 2025 09:21:03 +0200 Message-ID: <20250924072124.6493-14-anjo@rev.ng> In-Reply-To: <20250924072124.6493-1-anjo@rev.ng> References: <20250924072124.6493-1-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: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_PASS=-0.001, T_SPF_HELO_TEMPERROR=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: , 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: 1758698523698116600 Content-Type: text/plain; charset="utf-8" According to version 20250508 of the unprivileged specification the frm field of fcsr is 3-bits in size, fix it to 8-bits. Similarly fflags is 5 bits, fix to 8. Signed-off-by: Anton Johansson --- target/riscv/cpu.h | 6 +++--- target/riscv/csr.c | 4 ++++ target/riscv/fpu_helper.c | 6 +++--- target/riscv/machine.c | 2 +- 4 files changed, 11 insertions(+), 7 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 01ca3e781d..cf10662b3a 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -230,7 +230,7 @@ struct CPUArchState { =20 /* Floating-Point state */ uint64_t fpr[32]; /* assume both F and D extensions */ - target_ulong frm; + uint8_t frm; float_status fp_status; =20 target_ulong badaddr; @@ -663,8 +663,8 @@ G_NORETURN void riscv_raise_exception(CPURISCVState *en= v, RISCVException exception, uintptr_t pc); =20 -target_ulong riscv_cpu_get_fflags(CPURISCVState *env); -void riscv_cpu_set_fflags(CPURISCVState *env, target_ulong); +uint8_t riscv_cpu_get_fflags(CPURISCVState *env); +void riscv_cpu_set_fflags(CPURISCVState *env, uint8_t); =20 FIELD(TB_FLAGS, MEM_IDX, 0, 3) FIELD(TB_FLAGS, FS, 3, 2) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index f29a3c9991..a471e59f2d 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -895,6 +895,10 @@ static RISCVException write_frm(CPURISCVState *env, in= t csrno, static RISCVException read_fcsr(CPURISCVState *env, int csrno, target_ulong *val) { + /* + * This is an 8-bit operation, fflags make up the lower 5 bits and + * frm the upper 3 bits of fcsr. + */ *val =3D (riscv_cpu_get_fflags(env) << FSR_AEXC_SHIFT) | (env->frm << FSR_RD_SHIFT); return RISCV_EXCP_NONE; diff --git a/target/riscv/fpu_helper.c b/target/riscv/fpu_helper.c index af40561b31..db64fca622 100644 --- a/target/riscv/fpu_helper.c +++ b/target/riscv/fpu_helper.c @@ -23,10 +23,10 @@ #include "fpu/softfloat.h" #include "internals.h" =20 -target_ulong riscv_cpu_get_fflags(CPURISCVState *env) +uint8_t riscv_cpu_get_fflags(CPURISCVState *env) { int soft =3D get_float_exception_flags(&env->fp_status); - target_ulong hard =3D 0; + uint8_t hard =3D 0; =20 hard |=3D (soft & float_flag_inexact) ? FPEXC_NX : 0; hard |=3D (soft & float_flag_underflow) ? FPEXC_UF : 0; @@ -37,7 +37,7 @@ target_ulong riscv_cpu_get_fflags(CPURISCVState *env) return hard; } =20 -void riscv_cpu_set_fflags(CPURISCVState *env, target_ulong hard) +void riscv_cpu_set_fflags(CPURISCVState *env, uint8_t hard) { int soft =3D 0; =20 diff --git a/target/riscv/machine.c b/target/riscv/machine.c index 405a960f28..d38243b278 100644 --- a/target/riscv/machine.c +++ b/target/riscv/machine.c @@ -411,7 +411,7 @@ const VMStateDescription vmstate_riscv_cpu =3D { VMSTATE_UINT64(env.pc, RISCVCPU), VMSTATE_UINT64(env.load_res, RISCVCPU), VMSTATE_UINT64(env.load_val, RISCVCPU), - VMSTATE_UINTTL(env.frm, RISCVCPU), + VMSTATE_UINT8(env.frm, RISCVCPU), VMSTATE_UINTTL(env.badaddr, RISCVCPU), VMSTATE_UINTTL(env.guest_phys_fault_addr, RISCVCPU), VMSTATE_UINTTL(env.priv_ver, RISCVCPU), --=20 2.51.0