| /* |
| * 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 |
| |
| #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 |
| * 0x10 terminator (null _aarch64_ctx) |
| * |
| * 0xdd0 (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; |
| }; |
| |
| #endif /* _UAPI__ASM_SIGCONTEXT_H */ |