| /* 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 */ |
