| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ | |
| #ifndef __LOONGARCH_UAPI_ASM_UCONTEXT_H | |
| #define __LOONGARCH_UAPI_ASM_UCONTEXT_H | |
| /** | |
| * struct ucontext - user context structure | |
| * @uc_flags: | |
| * @uc_link: | |
| * @uc_stack: | |
| * @uc_mcontext: holds basic processor state | |
| * @uc_sigmask: | |
| * @uc_extcontext: holds extended processor state | |
| */ | |
| struct ucontext { | |
| unsigned long uc_flags; | |
| struct ucontext *uc_link; | |
| stack_t uc_stack; | |
| sigset_t uc_sigmask; | |
| /* There's some padding here to allow sigset_t to be expanded in the | |
| * future. Though this is unlikely, other architectures put uc_sigmask | |
| * at the end of this structure and explicitly state it can be | |
| * expanded, so we didn't want to box ourselves in here. */ | |
| __u8 __unused[1024 / 8 - sizeof(sigset_t)]; | |
| /* We can't put uc_sigmask at the end of this structure because we need | |
| * to be able to expand sigcontext in the future. For example, the | |
| * vector ISA extension will almost certainly add ISA state. We want | |
| * to ensure all user-visible ISA state can be saved and restored via a | |
| * ucontext, so we're putting this at the end in order to allow for | |
| * infinite extensibility. Since we know this will be extended and we | |
| * assume sigset_t won't be extended an extreme amount, we're | |
| * prioritizing this. */ | |
| struct sigcontext uc_mcontext; | |
| }; | |
| #endif /* __LOONGARCH_UAPI_ASM_UCONTEXT_H */ |