1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ***   To edit the content of this header, modify the corresponding
11 ***   source file (e.g. under external/kernel-headers/original/) then
12 ***   run bionic/libc/kernel/tools/update_all.py
13 ***
14 ***   Any manual change here will be lost the next time this script will
15 ***   be run. You've been warned!
16 ***
17 ****************************************************************************
18 ****************************************************************************/
19#ifndef __LOONGARCH_UAPI_ASM_UCONTEXT_H
20#define __LOONGARCH_UAPI_ASM_UCONTEXT_H
21
22/**
23 * struct ucontext - user context structure
24 * @uc_flags:
25 * @uc_link:
26 * @uc_stack:
27 * @uc_mcontext:	holds basic processor state
28 * @uc_sigmask:
29 * @uc_extcontext:	holds extended processor state
30 */
31struct ucontext {
32	unsigned long		uc_flags;
33	struct ucontext		*uc_link;
34	stack_t			uc_stack;
35	sigset_t		uc_sigmask;
36	/* There's some padding here to allow sigset_t to be expanded in the
37	 * future.  Though this is unlikely, other architectures put uc_sigmask
38	 * at the end of this structure and explicitly state it can be
39	 * expanded, so we didn't want to box ourselves in here. */
40	__u8		  __unused[1024 / 8 - sizeof(sigset_t)];
41	/* We can't put uc_sigmask at the end of this structure because we need
42	 * to be able to expand sigcontext in the future.  For example, the
43	 * vector ISA extension will almost certainly add ISA state.  We want
44	 * to ensure all user-visible ISA state can be saved and restored via a
45	 * ucontext, so we're putting this at the end in order to allow for
46	 * infinite extensibility.  Since we know this will be extended and we
47	 * assume sigset_t won't be extended an extreme amount, we're
48	 * prioritizing this. */
49	struct sigcontext	uc_mcontext;
50};
51
52#endif /* __LOONGARCH_UAPI_ASM_UCONTEXT_H */
53