| 1 | /* |
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| 2 | * This file is subject to the terms and conditions of the GNU General Public |
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| 3 | * License. See the file "COPYING" in the main directory of this archive |
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| 4 | * for more details. |
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| 5 | * |
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| 6 | * Copyright (C) 1991, 1992 Linus Torvalds |
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| 7 | * Copyright (C) 1994 - 2000 Ralf Baechle |
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| 8 | * Copyright (C) 1999, 2000 Silicon Graphics, Inc. |
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| 9 | */ |
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| 10 | |
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| 11 | #ifndef __SIGNAL_COMMON_H |
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| 12 | #define __SIGNAL_COMMON_H |
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| 13 | |
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| 14 | /* #define DEBUG_SIG */ |
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| 15 | |
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| 16 | #ifdef DEBUG_SIG |
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| 17 | # define DEBUGP(fmt, args...) printk("%s: " fmt, __func__, ##args) |
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| 18 | #else |
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| 19 | # define DEBUGP(fmt, args...) |
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| 20 | #endif |
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| 21 | |
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| 22 | /* |
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| 23 | * Determine which stack to use.. |
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| 24 | */ |
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| 25 | extern void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, |
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| 26 | size_t frame_size); |
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| 27 | /* Check and clear pending FPU exceptions in saved CSR */ |
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| 28 | extern int fpcsr_pending(unsigned int __user *fpcsr); |
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| 29 | |
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| 30 | /* Make sure we will not lose FPU ownership */ |
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| 31 | #define lock_fpu_owner() ({ preempt_disable(); pagefault_disable(); }) |
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| 32 | #define unlock_fpu_owner() ({ pagefault_enable(); preempt_enable(); }) |
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| 33 | |
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| 34 | /* Assembly functions to move context to/from the FPU */ |
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| 35 | extern asmlinkage int |
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| 36 | _save_fp_context(void __user *fpregs, void __user *csr); |
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| 37 | extern asmlinkage int |
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| 38 | _restore_fp_context(void __user *fpregs, void __user *csr); |
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| 39 | |
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| 40 | extern asmlinkage int _save_msa_all_upper(void __user *buf); |
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| 41 | extern asmlinkage int _restore_msa_all_upper(void __user *buf); |
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| 42 | |
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| 43 | #endif /* __SIGNAL_COMMON_H */ |
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| 44 | |
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