From patchwork Mon Jul 22 21:43:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Warner Losh X-Patchwork-Id: 13739121 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 459A2C3DA5D for ; Mon, 22 Jul 2024 21:45:26 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sW0qB-0005dL-91; Mon, 22 Jul 2024 17:45:07 -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 1sW0q0-00056h-DY for qemu-devel@nongnu.org; Mon, 22 Jul 2024 17:44:56 -0400 Received: from mail-io1-xd2f.google.com ([2607:f8b0:4864:20::d2f]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sW0px-0004Kj-Q9 for qemu-devel@nongnu.org; Mon, 22 Jul 2024 17:44:56 -0400 Received: by mail-io1-xd2f.google.com with SMTP id ca18e2360f4ac-8152f0c63c1so187726839f.1 for ; Mon, 22 Jul 2024 14:44:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20230601.gappssmtp.com; s=20230601; t=1721684692; x=1722289492; 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=iERzhBKroDxEdhIs7F3pdJn/htP75xFz5hRc3MKZk4Y=; b=H1cLCdtVoiqoH+MpH5b/fzvvPI3crrtcGxT85rHtUb1FpFUEDXEbl7OPBuCorRvuNT 0QTRB34ivL4ffB7UMiFa7P5Ehf4ZgVt9xIT18tTRx25LsSPkM1vA+u0dtm5GHVhV0SVc WZLRoDLI6RUv3z4QpXERruMkamM82YqAvBORo/5Yr5LmrniQFDAtiB3Zn635pH1JrIG7 /sD14vRSKE72C0QmUsZ36WLqnoVZhvX7hMCiJVW0ZEPo0kI71Z3pt0eJSZ0QaeirwsyX f5CodWEOrEoGGi51xRil1Mpz7ZoDPhUeeyj12EpQLvET8DKiL/M4jVtWvI6llW9lh4pr xcrw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721684692; x=1722289492; 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=iERzhBKroDxEdhIs7F3pdJn/htP75xFz5hRc3MKZk4Y=; b=FtbQ1ByoNkWaeo64st1/WfiopY2xyr7sNEBHQ2woKDVMBTe4iycNgCkIYwbmaqQLwF qo0wTySU7N12JWxcqjbZ4fzJAV/EMrI52xGgKfacBORyLYRSeB9vrNjtQ+yaDNZkolka yZw/NLEGY0bVnk2y7MYTC3ff5bOqM8jYyN+7T6PsSd+gmDmi+5HOMIcRXoZ2njxjrNiP 7CxiyrO2jkMCQyzJQvtO/c4qXfMRlk1ekAxi8nGBVnrLulAbU9B4Iyjk9zeRR9CD9ch9 DAx+P1Hy56TKO11VpouUY2d9E56TcjWZ9UGETV/XykRHHfoBsmgWtcflkjfupk7gIpHA BVjA== X-Gm-Message-State: AOJu0YxPHNJEyda9Nnbs+OxvExIir88IGB1FtjCIBrwaxO3OuWk2iWkk iYDoZEoAk0Ayr3aBQ6E1A05D3DrmePFm39YMBh0iLXr7CzkpyrIfHTFTEyvYp2t8iiNxeWZsMx1 SCus= X-Google-Smtp-Source: AGHT+IF+pM79W/+yxi2cfrLz8Mbnqb5WjL9O4G1JD8Yoy46NXP0enK/nJpEcF2NcjIS40X+aQ9ywnA== X-Received: by 2002:a05:6602:341b:b0:803:cc64:e0d4 with SMTP id ca18e2360f4ac-81ea30a2dedmr155466039f.3.1721684691856; Mon, 22 Jul 2024 14:44:51 -0700 (PDT) Received: from dune.bsdimp.com ([50.253.99.174]) by smtp.gmail.com with ESMTPSA id 8926c6da1cb9f-4c2343d2ff3sm1816830173.128.2024.07.22.14.44.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Jul 2024 14:44:51 -0700 (PDT) From: Warner Losh To: qemu-devel@nongnu.org Cc: Kyle Evans , qemu-arm@nongnu.org, Warner Losh , Peter Maydell , Stacey Son , Ajeet Singh , Richard Henderson Subject: [PATCH 08/14] bsd-user:Add AArch64 improvements and signal handling functions Date: Mon, 22 Jul 2024 15:43:07 -0600 Message-ID: <20240722214313.89503-9-imp@bsdimp.com> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240722214313.89503-1-imp@bsdimp.com> References: <20240722214313.89503-1-imp@bsdimp.com> MIME-Version: 1.0 Received-SPF: none client-ip=2607:f8b0:4864:20::d2f; envelope-from=imp@bsdimp.com; helo=mail-io1-xd2f.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_NONE=0.001 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 From: Stacey Son Added get_ucontext_sigreturn function to check processor state ensuring current execution mode is EL0 and no flags indicating interrupts or exceptions are set. Updated AArch64 code to use CF directly without reading/writing the entire processor state, improving efficiency. Changed FP data structures to use Int128 instead of __uint128_t, leveraging QEMU's generic mechanism for referencing this type. Signed-off-by: Stacey Son Signed-off-by: Ajeet Singh Signed-off-by: Warner Losh Reviewed-by: Richard Henderson Message-Id: <20240707191128.10509-9-itachis@FreeBSD.org> Signed-off-by: Warner Losh --- bsd-user/aarch64/signal.c | 20 +++++++++++++++++++- bsd-user/aarch64/target_arch_cpu.h | 7 ++----- bsd-user/aarch64/target_arch_reg.h | 2 +- bsd-user/aarch64/target_arch_signal.h | 2 +- bsd-user/qemu.h | 3 +++ 5 files changed, 26 insertions(+), 8 deletions(-) diff --git a/bsd-user/aarch64/signal.c b/bsd-user/aarch64/signal.c index 13faac8ce60..6bc73a798f3 100644 --- a/bsd-user/aarch64/signal.c +++ b/bsd-user/aarch64/signal.c @@ -21,7 +21,7 @@ #include "qemu.h" /* - * Compare to sendsig() in sys/arm64/arm64/machdep.c + * Compare to sendsig() in sys/arm64/arm64/exec_machdep.c * Assumes that target stack frame memory is locked. */ abi_long set_sigtramp_args(CPUARMState *regs, int sig, @@ -117,3 +117,21 @@ abi_long set_mcontext(CPUARMState *regs, target_mcontext_t *mcp, int srflag) return err; } + +/* Compare to sys_sigreturn() in arm64/arm64/machdep.c */ +abi_long get_ucontext_sigreturn(CPUARMState *regs, abi_ulong target_sf, + abi_ulong *target_uc) +{ + uint32_t pstate = pstate_read(regs); + + *target_uc = 0; + + if ((pstate & PSTATE_M) != PSTATE_MODE_EL0t || + (pstate & (PSTATE_F | PSTATE_I | PSTATE_A | PSTATE_D)) != 0) { + return -TARGET_EINVAL; + } + + *target_uc = target_sf; + + return 0; +} diff --git a/bsd-user/aarch64/target_arch_cpu.h b/bsd-user/aarch64/target_arch_cpu.h index 5c150bb7e9c..b288e0d069b 100644 --- a/bsd-user/aarch64/target_arch_cpu.h +++ b/bsd-user/aarch64/target_arch_cpu.h @@ -48,7 +48,6 @@ static inline void target_cpu_loop(CPUARMState *env) CPUState *cs = env_cpu(env); int trapnr, ec, fsc, si_code, si_signo; uint64_t code, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8; - uint32_t pstate; abi_long ret; for (;;) { @@ -88,18 +87,16 @@ static inline void target_cpu_loop(CPUARMState *env) * The carry bit is cleared for no error; set for error. * See arm64/arm64/vm_machdep.c cpu_set_syscall_retval() */ - pstate = pstate_read(env); if (ret >= 0) { - pstate &= ~PSTATE_C; + env->CF = 0; env->xregs[0] = ret; } else if (ret == -TARGET_ERESTART) { env->pc -= 4; break; } else if (ret != -TARGET_EJUSTRETURN) { - pstate |= PSTATE_C; + env->CF = 1; env->xregs[0] = -ret; } - pstate_write(env, pstate); break; case EXCP_INTERRUPT: diff --git a/bsd-user/aarch64/target_arch_reg.h b/bsd-user/aarch64/target_arch_reg.h index 5c7154f0c18..b53302e7f7a 100644 --- a/bsd-user/aarch64/target_arch_reg.h +++ b/bsd-user/aarch64/target_arch_reg.h @@ -31,7 +31,7 @@ typedef struct target_reg { } target_reg_t; typedef struct target_fpreg { - __uint128_t fp_q[32]; + Int128 fp_q[32]; uint32_t fp_sr; uint32_t fp_cr; } target_fpreg_t; diff --git a/bsd-user/aarch64/target_arch_signal.h b/bsd-user/aarch64/target_arch_signal.h index df171733166..bff752a67ab 100644 --- a/bsd-user/aarch64/target_arch_signal.h +++ b/bsd-user/aarch64/target_arch_signal.h @@ -49,7 +49,7 @@ struct target_gpregs { }; struct target_fpregs { - __uint128_t fp_q[32]; + Int128 fp_q[32]; uint32_t fp_sr; uint32_t fp_cr; uint32_t fp_flags; diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h index 9d2fc7148eb..3736c417860 100644 --- a/bsd-user/qemu.h +++ b/bsd-user/qemu.h @@ -17,6 +17,9 @@ #ifndef QEMU_H #define QEMU_H +#include + +#include "qemu/int128.h" #include "cpu.h" #include "qemu/units.h" #include "exec/cpu_ldst.h"