2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 1991, 1992 Linus Torvalds
7 * Copyright (C) 1994 - 2000 Ralf Baechle
8 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
11 #ifndef __SIGNAL_COMMON_H
12 #define __SIGNAL_COMMON_H
15 * Horribly complicated - with the bloody RM9000 workarounds enabled
16 * the signal trampolines is moving to the end of the structure so we can
17 * increase the alignment without breaking software compatibility.
19 #if ICACHE_REFILLS_WORKAROUND_WAR == 0
22 u32 sf_ass[4]; /* argument save space for o32 */
23 u32 sf_code[2]; /* signal trampoline */
24 struct sigcontext sf_sc;
28 #else /* ICACHE_REFILLS_WORKAROUND_WAR */
31 u32 sf_ass[4]; /* argument save space for o32 */
33 struct sigcontext sf_sc; /* hw context */
35 u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */
38 #endif /* !ICACHE_REFILLS_WORKAROUND_WAR */
41 * handle hardware context
43 extern int setup_sigcontext(struct pt_regs *, struct sigcontext __user *);
44 extern int restore_sigcontext(struct pt_regs *, struct sigcontext __user *);
47 * Determine which stack to use..
49 extern void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
52 * install trampoline code to get back from the sig handler
54 extern int install_sigtramp(unsigned int __user *tramp, unsigned int syscall);
56 #endif /* __SIGNAL_COMMON_H */