Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 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 |
| 4 | * for more details. |
| 5 | * |
| 6 | * Copyright (C) 1991, 1992 Linus Torvalds |
| 7 | * Copyright (C) 1994 - 2000 Ralf Baechle |
| 8 | * Copyright (C) 1999, 2000 Silicon Graphics, Inc. |
| 9 | */ |
| 10 | |
Franck Bui-Huu | c3fc4ab | 2007-02-05 15:24:20 +0100 | [diff] [blame] | 11 | #ifndef __SIGNAL_COMMON_H |
| 12 | #define __SIGNAL_COMMON_H |
Ralf Baechle | e50c0a8 | 2005-05-31 11:49:19 +0000 | [diff] [blame] | 13 | |
Franck Bui-Huu | 722bb63 | 2007-02-05 15:24:24 +0100 | [diff] [blame^] | 14 | /* #define DEBUG_SIG */ |
| 15 | |
| 16 | #ifdef DEBUG_SIG |
| 17 | # define DEBUGP(fmt, args...) printk("%s: " fmt, __FUNCTION__ , ##args) |
| 18 | #else |
| 19 | # define DEBUGP(fmt, args...) |
| 20 | #endif |
| 21 | |
Franck Bui-Huu | c3fc4ab | 2007-02-05 15:24:20 +0100 | [diff] [blame] | 22 | /* |
Franck Bui-Huu | c0b9bae | 2007-02-05 15:24:21 +0100 | [diff] [blame] | 23 | * Horribly complicated - with the bloody RM9000 workarounds enabled |
| 24 | * the signal trampolines is moving to the end of the structure so we can |
| 25 | * increase the alignment without breaking software compatibility. |
| 26 | */ |
| 27 | #if ICACHE_REFILLS_WORKAROUND_WAR == 0 |
| 28 | |
| 29 | struct sigframe { |
| 30 | u32 sf_ass[4]; /* argument save space for o32 */ |
| 31 | u32 sf_code[2]; /* signal trampoline */ |
| 32 | struct sigcontext sf_sc; |
| 33 | sigset_t sf_mask; |
| 34 | }; |
| 35 | |
| 36 | #else /* ICACHE_REFILLS_WORKAROUND_WAR */ |
| 37 | |
| 38 | struct sigframe { |
| 39 | u32 sf_ass[4]; /* argument save space for o32 */ |
| 40 | u32 sf_pad[2]; |
| 41 | struct sigcontext sf_sc; /* hw context */ |
| 42 | sigset_t sf_mask; |
| 43 | u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */ |
| 44 | }; |
| 45 | |
| 46 | #endif /* !ICACHE_REFILLS_WORKAROUND_WAR */ |
| 47 | |
| 48 | /* |
Franck Bui-Huu | c3fc4ab | 2007-02-05 15:24:20 +0100 | [diff] [blame] | 49 | * handle hardware context |
| 50 | */ |
| 51 | extern int setup_sigcontext(struct pt_regs *, struct sigcontext __user *); |
| 52 | extern int restore_sigcontext(struct pt_regs *, struct sigcontext __user *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | /* |
| 55 | * Determine which stack to use.. |
| 56 | */ |
Franck Bui-Huu | c3fc4ab | 2007-02-05 15:24:20 +0100 | [diff] [blame] | 57 | extern void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, |
| 58 | size_t frame_size); |
| 59 | /* |
| 60 | * install trampoline code to get back from the sig handler |
| 61 | */ |
| 62 | extern int install_sigtramp(unsigned int __user *tramp, unsigned int syscall); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Franck Bui-Huu | c3fc4ab | 2007-02-05 15:24:20 +0100 | [diff] [blame] | 64 | #endif /* __SIGNAL_COMMON_H */ |