diff options
Diffstat (limited to 'arch/powerpc/kernel/signal.h')
-rw-r--r-- | arch/powerpc/kernel/signal.h | 186 |
1 files changed, 165 insertions, 21 deletions
diff --git a/arch/powerpc/kernel/signal.h b/arch/powerpc/kernel/signal.h index 800433685888..58ecea1cdc27 100644 --- a/arch/powerpc/kernel/signal.h +++ b/arch/powerpc/kernel/signal.h @@ -1,19 +1,14 @@ -/* +/* SPDX-License-Identifier: GPL-2.0-or-later + * * Copyright (c) 2007 Benjamin Herrenschmidt, IBM Corporation * Extracted from signal_32.c and signal_64.c - * - * This file is subject to the terms and conditions of the GNU General - * Public License. See the file README.legal in the main directory of - * this archive for more details. */ #ifndef _POWERPC_ARCH_SIGNAL_H #define _POWERPC_ARCH_SIGNAL_H -extern void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags); - -extern void __user *get_sigframe(struct ksignal *ksig, unsigned long sp, - size_t frame_size, int is_32); +void __user *get_sigframe(struct ksignal *ksig, struct task_struct *tsk, + size_t frame_size, int is_32); extern int handle_signal32(struct ksignal *ksig, sigset_t *oldset, struct task_struct *tsk); @@ -21,15 +16,20 @@ extern int handle_signal32(struct ksignal *ksig, sigset_t *oldset, extern int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset, struct task_struct *tsk); -extern unsigned long copy_fpr_to_user(void __user *to, - struct task_struct *task); -extern unsigned long copy_ckfpr_to_user(void __user *to, - struct task_struct *task); -extern unsigned long copy_fpr_from_user(struct task_struct *task, - void __user *from); -extern unsigned long copy_ckfpr_from_user(struct task_struct *task, - void __user *from); -extern unsigned long get_tm_stackpointer(struct task_struct *tsk); +static inline int __get_user_sigset(sigset_t *dst, const sigset_t __user *src) +{ + BUILD_BUG_ON(sizeof(sigset_t) != sizeof(u64)); + + return __get_user(dst->sig[0], (u64 __user *)&src->sig[0]); +} +#define unsafe_get_user_sigset(dst, src, label) do { \ + sigset_t *__dst = dst; \ + const sigset_t __user *__src = src; \ + int i; \ + \ + for (i = 0; i < _NSIG_WORDS; i++) \ + unsafe_get_user(__dst->sig[i], &__src->sig[i], label); \ +} while (0) #ifdef CONFIG_VSX extern unsigned long copy_vsx_to_user(void __user *to, @@ -40,6 +40,150 @@ extern unsigned long copy_vsx_from_user(struct task_struct *task, void __user *from); extern unsigned long copy_ckvsx_from_user(struct task_struct *task, void __user *from); +unsigned long copy_fpr_to_user(void __user *to, struct task_struct *task); +unsigned long copy_ckfpr_to_user(void __user *to, struct task_struct *task); +unsigned long copy_fpr_from_user(struct task_struct *task, void __user *from); +unsigned long copy_ckfpr_from_user(struct task_struct *task, void __user *from); + +#define unsafe_copy_fpr_to_user(to, task, label) do { \ + struct task_struct *__t = task; \ + u64 __user *buf = (u64 __user *)to; \ + int i; \ + \ + for (i = 0; i < ELF_NFPREG - 1 ; i++) \ + unsafe_put_user(__t->thread.TS_FPR(i), &buf[i], label); \ + unsafe_put_user(__t->thread.fp_state.fpscr, &buf[i], label); \ +} while (0) + +#define unsafe_copy_vsx_to_user(to, task, label) do { \ + struct task_struct *__t = task; \ + u64 __user *buf = (u64 __user *)to; \ + int i; \ + \ + for (i = 0; i < ELF_NVSRHALFREG ; i++) \ + unsafe_put_user(__t->thread.fp_state.fpr[i][TS_VSRLOWOFFSET], \ + &buf[i], label);\ +} while (0) + +#define unsafe_copy_fpr_from_user(task, from, label) do { \ + struct task_struct *__t = task; \ + u64 __user *buf = (u64 __user *)from; \ + int i; \ + \ + for (i = 0; i < ELF_NFPREG - 1; i++) \ + unsafe_get_user(__t->thread.TS_FPR(i), &buf[i], label); \ + unsafe_get_user(__t->thread.fp_state.fpscr, &buf[i], label); \ +} while (0) + +#define unsafe_copy_vsx_from_user(task, from, label) do { \ + struct task_struct *__t = task; \ + u64 __user *buf = (u64 __user *)from; \ + int i; \ + \ + for (i = 0; i < ELF_NVSRHALFREG ; i++) \ + unsafe_get_user(__t->thread.fp_state.fpr[i][TS_VSRLOWOFFSET], \ + &buf[i], label); \ +} while (0) + +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM +#define unsafe_copy_ckfpr_to_user(to, task, label) do { \ + struct task_struct *__t = task; \ + u64 __user *buf = (u64 __user *)to; \ + int i; \ + \ + for (i = 0; i < ELF_NFPREG - 1 ; i++) \ + unsafe_put_user(__t->thread.TS_CKFPR(i), &buf[i], label);\ + unsafe_put_user(__t->thread.ckfp_state.fpscr, &buf[i], label); \ +} while (0) + +#define unsafe_copy_ckvsx_to_user(to, task, label) do { \ + struct task_struct *__t = task; \ + u64 __user *buf = (u64 __user *)to; \ + int i; \ + \ + for (i = 0; i < ELF_NVSRHALFREG ; i++) \ + unsafe_put_user(__t->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET], \ + &buf[i], label);\ +} while (0) + +#define unsafe_copy_ckfpr_from_user(task, from, label) do { \ + struct task_struct *__t = task; \ + u64 __user *buf = (u64 __user *)from; \ + int i; \ + \ + for (i = 0; i < ELF_NFPREG - 1 ; i++) \ + unsafe_get_user(__t->thread.TS_CKFPR(i), &buf[i], label);\ + unsafe_get_user(__t->thread.ckfp_state.fpscr, &buf[i], failed); \ +} while (0) + +#define unsafe_copy_ckvsx_from_user(task, from, label) do { \ + struct task_struct *__t = task; \ + u64 __user *buf = (u64 __user *)from; \ + int i; \ + \ + for (i = 0; i < ELF_NVSRHALFREG ; i++) \ + unsafe_get_user(__t->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET], \ + &buf[i], label); \ +} while (0) +#endif +#elif defined(CONFIG_PPC_FPU_REGS) + +#define unsafe_copy_fpr_to_user(to, task, label) \ + unsafe_copy_to_user(to, (task)->thread.fp_state.fpr, \ + ELF_NFPREG * sizeof(double), label) + +#define unsafe_copy_fpr_from_user(task, from, label) \ + unsafe_copy_from_user((task)->thread.fp_state.fpr, from, \ + ELF_NFPREG * sizeof(double), label) + +static inline unsigned long +copy_fpr_to_user(void __user *to, struct task_struct *task) +{ + return __copy_to_user(to, task->thread.fp_state.fpr, + ELF_NFPREG * sizeof(double)); +} + +static inline unsigned long +copy_fpr_from_user(struct task_struct *task, void __user *from) +{ + return __copy_from_user(task->thread.fp_state.fpr, from, + ELF_NFPREG * sizeof(double)); +} + +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM +#define unsafe_copy_ckfpr_to_user(to, task, label) \ + unsafe_copy_to_user(to, (task)->thread.ckfp_state.fpr, \ + ELF_NFPREG * sizeof(double), label) + +inline unsigned long copy_ckfpr_to_user(void __user *to, struct task_struct *task) +{ + return __copy_to_user(to, task->thread.ckfp_state.fpr, + ELF_NFPREG * sizeof(double)); +} + +static inline unsigned long +copy_ckfpr_from_user(struct task_struct *task, void __user *from) +{ + return __copy_from_user(task->thread.ckfp_state.fpr, from, + ELF_NFPREG * sizeof(double)); +} +#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ +#else +#define unsafe_copy_fpr_to_user(to, task, label) do { if (0) goto label;} while (0) + +#define unsafe_copy_fpr_from_user(task, from, label) do { if (0) goto label;} while (0) + +static inline unsigned long +copy_fpr_to_user(void __user *to, struct task_struct *task) +{ + return 0; +} + +static inline unsigned long +copy_fpr_from_user(struct task_struct *task, void __user *from) +{ + return 0; +} #endif #ifdef CONFIG_PPC64 @@ -49,9 +193,6 @@ extern int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, #else /* CONFIG_PPC64 */ -extern long sys_rt_sigreturn(void); -extern long sys_sigreturn(void); - static inline int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, struct task_struct *tsk) { @@ -60,4 +201,7 @@ static inline int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, #endif /* !defined(CONFIG_PPC64) */ +void signal_fault(struct task_struct *tsk, struct pt_regs *regs, + const char *where, void __user *ptr); + #endif /* _POWERPC_ARCH_SIGNAL_H */ |