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Diffstat (limited to 'arch/mips/kernel/signal-common.h')
| -rw-r--r-- | arch/mips/kernel/signal-common.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/mips/kernel/signal-common.h b/arch/mips/kernel/signal-common.h new file mode 100644 index 000000000..f50d48435 --- /dev/null +++ b/arch/mips/kernel/signal-common.h @@ -0,0 +1,43 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1991, 1992 Linus Torvalds + * Copyright (C) 1994 - 2000 Ralf Baechle + * Copyright (C) 1999, 2000 Silicon Graphics, Inc. + */ + +#ifndef __SIGNAL_COMMON_H +#define __SIGNAL_COMMON_H + +/* #define DEBUG_SIG */ + +#ifdef DEBUG_SIG +# define DEBUGP(fmt, args...) printk("%s: " fmt, __func__, ##args) +#else +# define DEBUGP(fmt, args...) +#endif + +/* + * Determine which stack to use.. + */ +extern void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, + size_t frame_size); +/* Check and clear pending FPU exceptions in saved CSR */ +extern int fpcsr_pending(unsigned int __user *fpcsr); + +/* Make sure we will not lose FPU ownership */ +#define lock_fpu_owner() ({ preempt_disable(); pagefault_disable(); }) +#define unlock_fpu_owner() ({ pagefault_enable(); preempt_enable(); }) + +/* Assembly functions to move context to/from the FPU */ +extern asmlinkage int +_save_fp_context(void __user *fpregs, void __user *csr); +extern asmlinkage int +_restore_fp_context(void __user *fpregs, void __user *csr); + +extern asmlinkage int _save_msa_all_upper(void __user *buf); +extern asmlinkage int _restore_msa_all_upper(void __user *buf); + +#endif /* __SIGNAL_COMMON_H */ |