1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3 * S390 version
4 *
5 * Derived from "include/asm-i386/ucontext.h"
6 */
7
8 #ifndef _ASM_S390_UCONTEXT_H
9 #define _ASM_S390_UCONTEXT_H
10
11 #define UC_GPRS_HIGH 1 /* uc_mcontext_ext has valid high gprs */
12 #define UC_VXRS 2 /* uc_mcontext_ext has valid vector regs */
13
14 /*
15 * The struct ucontext_extended describes how the registers are stored
16 * on a rt signal frame. Please note that the structure is not fixed,
17 * if new CPU registers are added to the user state the size of the
18 * struct ucontext_extended will increase.
19 */
20 struct ucontext_extended {
21 unsigned long uc_flags;
22 struct ucontext *uc_link;
23 stack_t uc_stack;
24 _sigregs uc_mcontext;
25 sigset_t uc_sigmask;
26 /* Allow for uc_sigmask growth. Glibc uses a 1024-bit sigset_t. */
27 unsigned char __unused[128 - sizeof(sigset_t)];
28 _sigregs_ext uc_mcontext_ext;
29 };
30
31 struct ucontext {
32 unsigned long uc_flags;
33 struct ucontext *uc_link;
34 stack_t uc_stack;
35 _sigregs uc_mcontext;
36 sigset_t uc_sigmask;
37 /* Allow for uc_sigmask growth. Glibc uses a 1024-bit sigset_t. */
38 unsigned char __unused[128 - sizeof(sigset_t)];
39 };
40
41 #endif /* !_ASM_S390_UCONTEXT_H */