1 /* 2 * Copyright (c) 2007 Benjamin Herrenschmidt, IBM Corporation 3 * Extracted from signal_32.c and signal_64.c 4 * 5 * This file is subject to the terms and conditions of the GNU General 6 * Public License. See the file README.legal in the main directory of 7 * this archive for more details. 8 */ 9 10 #ifndef _POWERPC_ARCH_SIGNAL_H 11 #define _POWERPC_ARCH_SIGNAL_H 12 13 void __user *get_sigframe(struct ksignal *ksig, struct task_struct *tsk, 14 size_t frame_size, int is_32); 15 16 extern int handle_signal32(struct ksignal *ksig, sigset_t *oldset, 17 struct task_struct *tsk); 18 19 extern int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset, 20 struct task_struct *tsk); 21 22 #ifdef CONFIG_VSX 23 extern unsigned long copy_vsx_to_user(void __user *to, 24 struct task_struct *task); 25 extern unsigned long copy_ckvsx_to_user(void __user *to, 26 struct task_struct *task); 27 extern unsigned long copy_vsx_from_user(struct task_struct *task, 28 void __user *from); 29 extern unsigned long copy_ckvsx_from_user(struct task_struct *task, 30 void __user *from); 31 unsigned long copy_fpr_to_user(void __user *to, struct task_struct *task); 32 unsigned long copy_ckfpr_to_user(void __user *to, struct task_struct *task); 33 unsigned long copy_fpr_from_user(struct task_struct *task, void __user *from); 34 unsigned long copy_ckfpr_from_user(struct task_struct *task, void __user *from); 35 36 #define unsafe_copy_fpr_to_user(to, task, label) do { \ 37 struct task_struct *__t = task; \ 38 u64 __user *buf = (u64 __user *)to; \ 39 int i; \ 40 \ 41 for (i = 0; i < ELF_NFPREG - 1 ; i++) \ 42 unsafe_put_user(__t->thread.TS_FPR(i), &buf[i], label); \ 43 unsafe_put_user(__t->thread.fp_state.fpscr, &buf[i], label); \ 44 } while (0) 45 46 #define unsafe_copy_vsx_to_user(to, task, label) do { \ 47 struct task_struct *__t = task; \ 48 u64 __user *buf = (u64 __user *)to; \ 49 int i; \ 50 \ 51 for (i = 0; i < ELF_NVSRHALFREG ; i++) \ 52 unsafe_put_user(__t->thread.fp_state.fpr[i][TS_VSRLOWOFFSET], \ 53 &buf[i], label);\ 54 } while (0) 55 56 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM 57 #define unsafe_copy_ckfpr_to_user(to, task, label) do { \ 58 struct task_struct *__t = task; \ 59 u64 __user *buf = (u64 __user *)to; \ 60 int i; \ 61 \ 62 for (i = 0; i < ELF_NFPREG - 1 ; i++) \ 63 unsafe_put_user(__t->thread.TS_CKFPR(i), &buf[i], label);\ 64 unsafe_put_user(__t->thread.ckfp_state.fpscr, &buf[i], label); \ 65 } while (0) 66 67 #define unsafe_copy_ckvsx_to_user(to, task, label) do { \ 68 struct task_struct *__t = task; \ 69 u64 __user *buf = (u64 __user *)to; \ 70 int i; \ 71 \ 72 for (i = 0; i < ELF_NVSRHALFREG ; i++) \ 73 unsafe_put_user(__t->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET], \ 74 &buf[i], label);\ 75 } while (0) 76 #endif 77 #elif defined(CONFIG_PPC_FPU_REGS) 78 79 #define unsafe_copy_fpr_to_user(to, task, label) \ 80 unsafe_copy_to_user(to, (task)->thread.fp_state.fpr, \ 81 ELF_NFPREG * sizeof(double), label) 82 83 static inline unsigned long 84 copy_fpr_to_user(void __user *to, struct task_struct *task) 85 { 86 return __copy_to_user(to, task->thread.fp_state.fpr, 87 ELF_NFPREG * sizeof(double)); 88 } 89 90 static inline unsigned long 91 copy_fpr_from_user(struct task_struct *task, void __user *from) 92 { 93 return __copy_from_user(task->thread.fp_state.fpr, from, 94 ELF_NFPREG * sizeof(double)); 95 } 96 97 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM 98 #define unsafe_copy_ckfpr_to_user(to, task, label) \ 99 unsafe_copy_to_user(to, (task)->thread.ckfp_state.fpr, \ 100 ELF_NFPREG * sizeof(double), label) 101 102 inline unsigned long copy_ckfpr_to_user(void __user *to, struct task_struct *task) 103 { 104 return __copy_to_user(to, task->thread.ckfp_state.fpr, 105 ELF_NFPREG * sizeof(double)); 106 } 107 108 static inline unsigned long 109 copy_ckfpr_from_user(struct task_struct *task, void __user *from) 110 { 111 return __copy_from_user(task->thread.ckfp_state.fpr, from, 112 ELF_NFPREG * sizeof(double)); 113 } 114 #endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ 115 #else 116 #define unsafe_copy_fpr_to_user(to, task, label) do { } while (0) 117 118 static inline unsigned long 119 copy_fpr_to_user(void __user *to, struct task_struct *task) 120 { 121 return 0; 122 } 123 124 static inline unsigned long 125 copy_fpr_from_user(struct task_struct *task, void __user *from) 126 { 127 return 0; 128 } 129 #endif 130 131 #ifdef CONFIG_PPC64 132 133 extern int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, 134 struct task_struct *tsk); 135 136 #else /* CONFIG_PPC64 */ 137 138 extern long sys_rt_sigreturn(void); 139 extern long sys_sigreturn(void); 140 141 static inline int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, 142 struct task_struct *tsk) 143 { 144 return -EFAULT; 145 } 146 147 #endif /* !defined(CONFIG_PPC64) */ 148 149 void signal_fault(struct task_struct *tsk, struct pt_regs *regs, 150 const char *where, void __user *ptr); 151 152 #endif /* _POWERPC_ARCH_SIGNAL_H */ 153