From 6e8dcacd0840b3c38e7ec664bb9adbccc2108fdd Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Mon, 27 Dec 2021 07:01:24 -0800 Subject: linux-user: Add code for PR_GET/SET_UNALIGN MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This requires extra work for each target, but adds the common syscall code, and the necessary flag in CPUState. Reviewed-by: Warner Losh Reviewed-by: Laurent Vivier Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson Message-Id: <20211227150127.2659293-4-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier --- linux-user/generic/target_prctl_unalign.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 linux-user/generic/target_prctl_unalign.h (limited to 'linux-user/generic') diff --git a/linux-user/generic/target_prctl_unalign.h b/linux-user/generic/target_prctl_unalign.h new file mode 100644 index 0000000000..bc3b83af2a --- /dev/null +++ b/linux-user/generic/target_prctl_unalign.h @@ -0,0 +1,27 @@ +/* + * Generic prctl unalign functions for linux-user + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#ifndef GENERIC_TARGET_PRCTL_UNALIGN_H +#define GENERIC_TARGET_PRCTL_UNALIGN_H + +static abi_long do_prctl_get_unalign(CPUArchState *env, target_long arg2) +{ + CPUState *cs = env_cpu(env); + uint32_t res = PR_UNALIGN_NOPRINT; + if (cs->prctl_unalign_sigbus) { + res |= PR_UNALIGN_SIGBUS; + } + return put_user_u32(res, arg2); +} +#define do_prctl_get_unalign do_prctl_get_unalign + +static abi_long do_prctl_set_unalign(CPUArchState *env, target_long arg2) +{ + env_cpu(env)->prctl_unalign_sigbus = arg2 & PR_UNALIGN_SIGBUS; + return 0; +} +#define do_prctl_set_unalign do_prctl_set_unalign + +#endif /* GENERIC_TARGET_PRCTL_UNALIGN_H */ -- cgit 1.4.1