You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
152 lines
4.4 KiB
152 lines
4.4 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
/*
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef _UAPI__ASM_SIGCONTEXT_H
|
|
#define _UAPI__ASM_SIGCONTEXT_H
|
|
|
|
#ifdef CONFIG_64BIT
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* Signal context structure - contains all info to do with the state
|
|
* before the signal handler was invoked.
|
|
*/
|
|
struct sigcontext {
|
|
__u64 fault_address;
|
|
/* AArch64 registers */
|
|
__u64 regs[31];
|
|
__u64 sp;
|
|
__u64 pc;
|
|
__u64 pstate;
|
|
/* 4K reserved for FP/SIMD state and future expansion */
|
|
__u8 __reserved[4096] __attribute__((__aligned__(16)));
|
|
};
|
|
|
|
/*
|
|
* Allocation of __reserved[]:
|
|
* (Note: records do not necessarily occur in the order shown here.)
|
|
*
|
|
* size description
|
|
*
|
|
* 0x210 fpsimd_context
|
|
* 0x10 esr_context
|
|
* 0x20 extra_context (optional)
|
|
* 0x10 terminator (null _aarch64_ctx)
|
|
*
|
|
* 0xdb0 (reserved for future allocation)
|
|
*
|
|
* New records that can exceed this space need to be opt-in for userspace, so
|
|
* that an expanded signal frame is not generated unexpectedly. The mechanism
|
|
* for opting in will depend on the extension that generates each new record.
|
|
* The above table documents the maximum set and sizes of records than can be
|
|
* generated when userspace does not opt in for any such extension.
|
|
*/
|
|
|
|
/*
|
|
* Header to be used at the beginning of structures extending the user
|
|
* context. Such structures must be placed after the rt_sigframe on the stack
|
|
* and be 16-byte aligned. The last structure must be a dummy one with the
|
|
* magic and size set to 0.
|
|
*/
|
|
struct _aarch64_ctx {
|
|
__u32 magic;
|
|
__u32 size;
|
|
};
|
|
|
|
#define FPSIMD_MAGIC 0x46508001
|
|
|
|
struct fpsimd_context {
|
|
struct _aarch64_ctx head;
|
|
__u32 fpsr;
|
|
__u32 fpcr;
|
|
__uint128_t vregs[32];
|
|
};
|
|
|
|
/* ESR_EL1 context */
|
|
#define ESR_MAGIC 0x45535201
|
|
|
|
struct esr_context {
|
|
struct _aarch64_ctx head;
|
|
__u64 esr;
|
|
};
|
|
|
|
/*
|
|
* extra_context: describes extra space in the signal frame for
|
|
* additional structures that don't fit in sigcontext.__reserved[].
|
|
*
|
|
* Note:
|
|
*
|
|
* 1) fpsimd_context, esr_context and extra_context must be placed in
|
|
* sigcontext.__reserved[] if present. They cannot be placed in the
|
|
* extra space. Any other record can be placed either in the extra
|
|
* space or in sigcontext.__reserved[], unless otherwise specified in
|
|
* this file.
|
|
*
|
|
* 2) There must not be more than one extra_context.
|
|
*
|
|
* 3) If extra_context is present, it must be followed immediately in
|
|
* sigcontext.__reserved[] by the terminating null _aarch64_ctx.
|
|
*
|
|
* 4) The extra space to which datap points must start at the first
|
|
* 16-byte aligned address immediately after the terminating null
|
|
* _aarch64_ctx that follows the extra_context structure in
|
|
* __reserved[]. The extra space may overrun the end of __reserved[],
|
|
* as indicated by a sufficiently large value for the size field.
|
|
*
|
|
* 5) The extra space must itself be terminated with a null
|
|
* _aarch64_ctx.
|
|
*/
|
|
#define EXTRA_MAGIC 0x45585401
|
|
|
|
struct extra_context {
|
|
struct _aarch64_ctx head;
|
|
__u64 datap; /* 16-byte aligned pointer to extra space cast to __u64 */
|
|
__u32 size; /* size in bytes of the extra space */
|
|
__u32 __reserved[3];
|
|
};
|
|
|
|
#else /* CONFIG_64BIT */
|
|
|
|
/*
|
|
* Signal context structure - contains all info to do with the state
|
|
* before the signal handler was invoked. Note: only add new entries
|
|
* to the end of the structure.
|
|
*/
|
|
struct sigcontext {
|
|
unsigned long trap_no;
|
|
unsigned long error_code;
|
|
unsigned long oldmask;
|
|
unsigned long arm_r0;
|
|
unsigned long arm_r1;
|
|
unsigned long arm_r2;
|
|
unsigned long arm_r3;
|
|
unsigned long arm_r4;
|
|
unsigned long arm_r5;
|
|
unsigned long arm_r6;
|
|
unsigned long arm_r7;
|
|
unsigned long arm_r8;
|
|
unsigned long arm_r9;
|
|
unsigned long arm_r10;
|
|
unsigned long arm_fp;
|
|
unsigned long arm_ip;
|
|
unsigned long arm_sp;
|
|
unsigned long arm_lr;
|
|
unsigned long arm_pc;
|
|
unsigned long arm_cpsr;
|
|
unsigned long fault_address;
|
|
};
|
|
#endif /* CONFIG_64BIT */
|
|
#endif /* _UAPI__ASM_SIGCONTEXT_H */
|
|
|