36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
|
/* 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 */
|