[linux-2.6-block.git] / arch / powerpc / kernel / signal.h

/* SPDX-License-Identifier: GPL-2.0-or-later
 *
 *    Copyright (c) 2007 Benjamin Herrenschmidt, IBM Corporation
 *    Extracted from signal_32.c and signal_64.c
 */

#ifndef _POWERPC_ARCH_SIGNAL_H
#define _POWERPC_ARCH_SIGNAL_H

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);

extern int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset,
			      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,
				      struct task_struct *task);
extern unsigned long copy_ckvsx_to_user(void __user *to,
					       struct task_struct *task);
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

extern int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
			      struct task_struct *tsk);

#else /* CONFIG_PPC64 */

static inline int handle_rt_signal64(struct ksignal *ksig, sigset_t *set,
				     struct task_struct *tsk)
{
	return -EFAULT;
}

#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 */
Commit	Line	Data
6fcb1397 GU	1	/* SPDX-License-Identifier: GPL-2.0-or-later
6fcb1397 GU	2	*
446957ba	3	* Copyright (c) 2007 Benjamin Herrenschmidt, IBM Corporation
22e38f29	4	* Extracted from signal_32.c and signal_64.c
22e38f29 BH	5	*/
	6
	7	#ifndef _POWERPC_ARCH_SIGNAL_H
	8	#define _POWERPC_ARCH_SIGNAL_H
	9
c180cb30 CL	10	void __user get_sigframe(struct ksignal ksig, struct task_struct *tsk,
c180cb30 CL	11	size_t frame_size, int is_32);
f478f543	12
129b69df	13	extern int handle_signal32(struct ksignal ksig, sigset_t oldset,
d1199431	14	struct task_struct *tsk);
f478f543	15
129b69df	16	extern int handle_rt_signal32(struct ksignal ksig, sigset_t oldset,
d1199431	17	struct task_struct *tsk);
f478f543	18
d3ccc978 CR	19	static inline int __get_user_sigset(sigset_t dst, const sigset_t __user src)
	20	{
	21	BUILD_BUG_ON(sizeof(sigset_t) != sizeof(u64));
	22
	23	return __get_user(dst->sig[0], (u64 __user *)&src->sig[0]);
	24	}
5499802b CL	25	#define unsafe_get_user_sigset(dst, src, label) do { \
	26	sigset_t *__dst = dst; \
	27	const sigset_t __user *__src = src; \
	28	int i; \
	29	\
	30	for (i = 0; i < _NSIG_WORDS; i++) \
	31	unsafe_get_user(__dst->sig[i], &__src->sig[i], label); \
	32	} while (0)
d3ccc978	33
6a274c08 MN	34	#ifdef CONFIG_VSX
	35	extern unsigned long copy_vsx_to_user(void __user *to,
	36	struct task_struct *task);
000ec280	37	extern unsigned long copy_ckvsx_to_user(void __user *to,
2b0a576d	38	struct task_struct *task);
6a274c08 MN	39	extern unsigned long copy_vsx_from_user(struct task_struct *task,
6a274c08 MN	40	void __user *from);
000ec280	41	extern unsigned long copy_ckvsx_from_user(struct task_struct *task,
2b0a576d	42	void __user *from);
95593e93 CL	43	unsigned long copy_fpr_to_user(void __user to, struct task_struct task);
	44	unsigned long copy_ckfpr_to_user(void __user to, struct task_struct task);
	45	unsigned long copy_fpr_from_user(struct task_struct task, void __user from);
	46	unsigned long copy_ckfpr_from_user(struct task_struct task, void __user from);
b3484a1d CL	47
	48	#define unsafe_copy_fpr_to_user(to, task, label) do { \
	49	struct task_struct *__t = task; \
	50	u64 __user buf = (u64 __user )to; \
	51	int i; \
	52	\
	53	for (i = 0; i < ELF_NFPREG - 1 ; i++) \
	54	unsafe_put_user(__t->thread.TS_FPR(i), &buf[i], label); \
	55	unsafe_put_user(__t->thread.fp_state.fpscr, &buf[i], label); \
	56	} while (0)
	57
	58	#define unsafe_copy_vsx_to_user(to, task, label) do { \
	59	struct task_struct *__t = task; \
	60	u64 __user buf = (u64 __user )to; \
	61	int i; \
	62	\
	63	for (i = 0; i < ELF_NVSRHALFREG ; i++) \
	64	unsafe_put_user(__t->thread.fp_state.fpr[i][TS_VSRLOWOFFSET], \
	65	&buf[i], label);\
	66	} while (0)
	67
609355df CR	68	#define unsafe_copy_fpr_from_user(task, from, label) do { \
	69	struct task_struct *__t = task; \
	70	u64 __user buf = (u64 __user )from; \
	71	int i; \
	72	\
	73	for (i = 0; i < ELF_NFPREG - 1; i++) \
	74	unsafe_get_user(__t->thread.TS_FPR(i), &buf[i], label); \
	75	unsafe_get_user(__t->thread.fp_state.fpscr, &buf[i], label); \
	76	} while (0)
	77
	78	#define unsafe_copy_vsx_from_user(task, from, label) do { \
	79	struct task_struct *__t = task; \
	80	u64 __user buf = (u64 __user )from; \
	81	int i; \
	82	\
	83	for (i = 0; i < ELF_NVSRHALFREG ; i++) \
	84	unsafe_get_user(__t->thread.fp_state.fpr[i][TS_VSRLOWOFFSET], \
	85	&buf[i], label); \
	86	} while (0)
	87
b3484a1d CL	88	#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
	89	#define unsafe_copy_ckfpr_to_user(to, task, label) do { \
	90	struct task_struct *__t = task; \
	91	u64 __user buf = (u64 __user )to; \
	92	int i; \
	93	\
	94	for (i = 0; i < ELF_NFPREG - 1 ; i++) \
	95	unsafe_put_user(__t->thread.TS_CKFPR(i), &buf[i], label);\
	96	unsafe_put_user(__t->thread.ckfp_state.fpscr, &buf[i], label); \
	97	} while (0)
	98
	99	#define unsafe_copy_ckvsx_to_user(to, task, label) do { \
	100	struct task_struct *__t = task; \
	101	u64 __user buf = (u64 __user )to; \
	102	int i; \
	103	\
	104	for (i = 0; i < ELF_NVSRHALFREG ; i++) \
	105	unsafe_put_user(__t->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET], \
	106	&buf[i], label);\
	107	} while (0)
7c11f889 CL	108
	109	#define unsafe_copy_ckfpr_from_user(task, from, label) do { \
	110	struct task_struct *__t = task; \
	111	u64 __user buf = (u64 __user )from; \
	112	int i; \
	113	\
	114	for (i = 0; i < ELF_NFPREG - 1 ; i++) \
	115	unsafe_get_user(__t->thread.TS_CKFPR(i), &buf[i], label);\
	116	unsafe_get_user(__t->thread.ckfp_state.fpscr, &buf[i], failed); \
	117	} while (0)
	118
	119	#define unsafe_copy_ckvsx_from_user(task, from, label) do { \
	120	struct task_struct *__t = task; \
	121	u64 __user buf = (u64 __user )from; \
	122	int i; \
	123	\
	124	for (i = 0; i < ELF_NVSRHALFREG ; i++) \
	125	unsafe_get_user(__t->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET], \
	126	&buf[i], label); \
	127	} while (0)
b3484a1d	128	#endif
b6254ced	129	#elif defined(CONFIG_PPC_FPU_REGS)
b3484a1d CL	130
	131	#define unsafe_copy_fpr_to_user(to, task, label) \
	132	unsafe_copy_to_user(to, (task)->thread.fp_state.fpr, \
	133	ELF_NFPREG * sizeof(double), label)
	134
609355df CR	135	#define unsafe_copy_fpr_from_user(task, from, label) \
	136	unsafe_copy_from_user((task)->thread.fp_state.fpr, from, \
	137	ELF_NFPREG * sizeof(double), label)
	138
95593e93 CL	139	static inline unsigned long
	140	copy_fpr_to_user(void __user to, struct task_struct task)
	141	{
	142	return __copy_to_user(to, task->thread.fp_state.fpr,
	143	ELF_NFPREG * sizeof(double));
	144	}
	145
	146	static inline unsigned long
	147	copy_fpr_from_user(struct task_struct task, void __user from)
	148	{
	149	return __copy_from_user(task->thread.fp_state.fpr, from,
	150	ELF_NFPREG * sizeof(double));
	151	}
	152
	153	#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
b3484a1d CL	154	#define unsafe_copy_ckfpr_to_user(to, task, label) \
	155	unsafe_copy_to_user(to, (task)->thread.ckfp_state.fpr, \
	156	ELF_NFPREG * sizeof(double), label)
	157
95593e93 CL	158	inline unsigned long copy_ckfpr_to_user(void __user to, struct task_struct task)
	159	{
	160	return __copy_to_user(to, task->thread.ckfp_state.fpr,
	161	ELF_NFPREG * sizeof(double));
	162	}
	163
	164	static inline unsigned long
	165	copy_ckfpr_from_user(struct task_struct task, void __user from)
	166	{
	167	return __copy_from_user(task->thread.ckfp_state.fpr, from,
	168	ELF_NFPREG * sizeof(double));
	169	}
	170	#endif /* CONFIG_PPC_TRANSACTIONAL_MEM */
b6254ced	171	#else
bc581dba	172	#define unsafe_copy_fpr_to_user(to, task, label) do { if (0) goto label;} while (0)
b3484a1d	173
bc581dba	174	#define unsafe_copy_fpr_from_user(task, from, label) do { if (0) goto label;} while (0)
609355df	175
b6254ced CL	176	static inline unsigned long
	177	copy_fpr_to_user(void __user to, struct task_struct task)
	178	{
	179	return 0;
	180	}
	181
	182	static inline unsigned long
	183	copy_fpr_from_user(struct task_struct task, void __user from)
	184	{
	185	return 0;
	186	}
6a274c08	187	#endif
2f97cd39 BH	188
	189	#ifdef CONFIG_PPC64
	190
129b69df	191	extern int handle_rt_signal64(struct ksignal ksig, sigset_t set,
d1199431	192	struct task_struct *tsk);
22e38f29	193
2f97cd39 BH	194	#else /* CONFIG_PPC64 */
2f97cd39 BH	195
129b69df	196	static inline int handle_rt_signal64(struct ksignal ksig, sigset_t set,
d1199431	197	struct task_struct *tsk)
2f97cd39 BH	198	{
	199	return -EFAULT;
	200	}
	201
	202	#endif /* !defined(CONFIG_PPC64) */
	203
7fe8f773 CL	204	void signal_fault(struct task_struct tsk, struct pt_regs regs,
	205	const char where, void __user ptr);
	206
22e38f29	207	#endif /* _POWERPC_ARCH_SIGNAL_H */