From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:35829) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gr4AQ-0001rl-QI for qemu-devel@nongnu.org; Tue, 05 Feb 2019 12:05:51 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gr4AK-0000VF-J7 for qemu-devel@nongnu.org; Tue, 05 Feb 2019 12:05:48 -0500 Received: from mail-wr1-x42b.google.com ([2a00:1450:4864:20::42b]:36749) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gr4AC-0000Nv-Sv for qemu-devel@nongnu.org; Tue, 05 Feb 2019 12:05:40 -0500 Received: by mail-wr1-x42b.google.com with SMTP id z3so4483221wrv.3 for ; Tue, 05 Feb 2019 09:05:29 -0800 (PST) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [81.2.115.148]) by smtp.gmail.com with ESMTPSA id w13sm5583164wmf.5.2019.02.05.09.05.25 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Feb 2019 09:05:26 -0800 (PST) From: Peter Maydell Date: Tue, 5 Feb 2019 17:04:58 +0000 Message-Id: <20190205170510.21984-11-peter.maydell@linaro.org> In-Reply-To: <20190205170510.21984-1-peter.maydell@linaro.org> References: <20190205170510.21984-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PULL 10/22] linux-user: Implement PR_PAC_RESET_KEYS List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: Richard Henderson Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Message-id: 20190201195404.30486-2-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- linux-user/aarch64/target_syscall.h | 7 ++++++ linux-user/syscall.c | 36 +++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+) diff --git a/linux-user/aarch64/target_syscall.h b/linux-user/aarch64/target_syscall.h index 937fd7989e7..b595e5da820 100644 --- a/linux-user/aarch64/target_syscall.h +++ b/linux-user/aarch64/target_syscall.h @@ -22,6 +22,13 @@ struct target_pt_regs { #define TARGET_PR_SVE_SET_VL 50 #define TARGET_PR_SVE_GET_VL 51 +#define TARGET_PR_PAC_RESET_KEYS 54 +# define TARGET_PR_PAC_APIAKEY (1 << 0) +# define TARGET_PR_PAC_APIBKEY (1 << 1) +# define TARGET_PR_PAC_APDAKEY (1 << 2) +# define TARGET_PR_PAC_APDBKEY (1 << 3) +# define TARGET_PR_PAC_APGAKEY (1 << 4) + void arm_init_pauth_key(ARMPACKey *key); #endif /* AARCH64_TARGET_SYSCALL_H */ diff --git a/linux-user/syscall.c b/linux-user/syscall.c index b5786d4fc1f..bf076cbf8c4 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -9691,6 +9691,42 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, } } return ret; + case TARGET_PR_PAC_RESET_KEYS: + { + CPUARMState *env = cpu_env; + ARMCPU *cpu = arm_env_get_cpu(env); + + if (arg3 || arg4 || arg5) { + return -TARGET_EINVAL; + } + if (cpu_isar_feature(aa64_pauth, cpu)) { + int all = (TARGET_PR_PAC_APIAKEY | TARGET_PR_PAC_APIBKEY | + TARGET_PR_PAC_APDAKEY | TARGET_PR_PAC_APDBKEY | + TARGET_PR_PAC_APGAKEY); + if (arg2 == 0) { + arg2 = all; + } else if (arg2 & ~all) { + return -TARGET_EINVAL; + } + if (arg2 & TARGET_PR_PAC_APIAKEY) { + arm_init_pauth_key(&env->apia_key); + } + if (arg2 & TARGET_PR_PAC_APIBKEY) { + arm_init_pauth_key(&env->apib_key); + } + if (arg2 & TARGET_PR_PAC_APDAKEY) { + arm_init_pauth_key(&env->apda_key); + } + if (arg2 & TARGET_PR_PAC_APDBKEY) { + arm_init_pauth_key(&env->apdb_key); + } + if (arg2 & TARGET_PR_PAC_APGAKEY) { + arm_init_pauth_key(&env->apga_key); + } + return 0; + } + } + return -TARGET_EINVAL; #endif /* AARCH64 */ case PR_GET_SECCOMP: case PR_SET_SECCOMP: -- 2.20.1