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📄 uaccess.h

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		"	.dword 2b,4b\n"		"	.previous"		: "=r" (res), "=r" (dst), "=r" (src), "=r" (count)		: "3" (count), "1" (dst), "2" (src), "g" (-EFAULT)		: "r9");	return res;}static inline unsigned long__generic_copy_to_user(void *to, const void *from, unsigned long n){	if (access_ok(VERIFY_WRITE, to, n))		return __copy_user(to,from,n);	return n;}static inline unsigned long__generic_copy_from_user(void *to, const void *from, unsigned long n){	if (access_ok(VERIFY_READ, from, n))		return __copy_user_zeroing(to,from,n);	return n;}static inline unsigned long__generic_clear_user(void *to, unsigned long n){	if (access_ok(VERIFY_WRITE, to, n))		return __do_clear_user(to,n);	return n;}static inline long__strncpy_from_user(char *dst, const char *src, long count){	return __do_strncpy_from_user(dst, src, count);}static inline longstrncpy_from_user(char *dst, const char *src, long count){	long res = -EFAULT;	if (access_ok(VERIFY_READ, src, 1))		res = __do_strncpy_from_user(dst, src, count);	return res;}/* A few copy asms to build up the more complex ones from.   Note again, a post-increment is performed regardless of whether a bus   fault occurred in that instruction, and PC for a faulted insn is the   address *after* the insn.  */#define __asm_copy_user_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm__ __volatile__ (				\			COPY				\		"1:\n"					\		"	.section .fixup,\"ax\"\n"	\			FIXUP				\		"	jump 1b\n"			\		"	.previous\n"			\		"	.section __ex_table,\"a\"\n"	\			TENTRY				\		"	.previous\n"			\		: "=r" (to), "=r" (from), "=r" (ret)	\		: "0" (to), "1" (from), "2" (ret)	\		: "r9", "memory")#define __asm_copy_from_user_1(to, from, ret) \	__asm_copy_user_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"	\		"2:	move.b $r9,[%0+]\n",	\		"3:	addq 1,%2\n"		\		"	clear.b [%0+]\n",	\		"	.dword 2b,3b\n")#define __asm_copy_from_user_2x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_user_cont(to, from, ret,		\		"	move.w [%1+],$r9\n"		\		"2:	move.w $r9,[%0+]\n" COPY,	\		"3:	addq 2,%2\n"			\		"	clear.w [%0+]\n" FIXUP,		\		"	.dword 2b,3b\n" TENTRY)#define __asm_copy_from_user_2(to, from, ret) \	__asm_copy_from_user_2x_cont(to, from, ret, "", "", "")#define __asm_copy_from_user_3(to, from, ret)		\	__asm_copy_from_user_2x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"4:	move.b $r9,[%0+]\n",		\		"5:	addq 1,%2\n"			\		"	clear.b [%0+]\n",		\		"	.dword 4b,5b\n")#define __asm_copy_from_user_4x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_user_cont(to, from, ret,		\		"	move.d [%1+],$r9\n"		\		"2:	move.d $r9,[%0+]\n" COPY,	\		"3:	addq 4,%2\n"			\		"	clear.d [%0+]\n" FIXUP,		\		"	.dword 2b,3b\n" TENTRY)#define __asm_copy_from_user_4(to, from, ret) \	__asm_copy_from_user_4x_cont(to, from, ret, "", "", "")#define __asm_copy_from_user_5(to, from, ret) \	__asm_copy_from_user_4x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"4:	move.b $r9,[%0+]\n",		\		"5:	addq 1,%2\n"			\		"	clear.b [%0+]\n",		\		"	.dword 4b,5b\n")#define __asm_copy_from_user_6x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_from_user_4x_cont(to, from, ret,	\		"	move.w [%1+],$r9\n"		\		"4:	move.w $r9,[%0+]\n" COPY,	\		"5:	addq 2,%2\n"			\		"	clear.w [%0+]\n" FIXUP,		\		"	.dword 4b,5b\n" TENTRY)#define __asm_copy_from_user_6(to, from, ret) \	__asm_copy_from_user_6x_cont(to, from, ret, "", "", "")#define __asm_copy_from_user_7(to, from, ret) \	__asm_copy_from_user_6x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"6:	move.b $r9,[%0+]\n",		\		"7:	addq 1,%2\n"			\		"	clear.b [%0+]\n",		\		"	.dword 6b,7b\n")#define __asm_copy_from_user_8x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_from_user_4x_cont(to, from, ret,	\		"	move.d [%1+],$r9\n"		\		"4:	move.d $r9,[%0+]\n" COPY,	\		"5:	addq 4,%2\n"			\		"	clear.d [%0+]\n" FIXUP,		\		"	.dword 4b,5b\n" TENTRY)#define __asm_copy_from_user_8(to, from, ret) \	__asm_copy_from_user_8x_cont(to, from, ret, "", "", "")#define __asm_copy_from_user_9(to, from, ret) \	__asm_copy_from_user_8x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"6:	move.b $r9,[%0+]\n",		\		"7:	addq 1,%2\n"			\		"	clear.b [%0+]\n",		\		"	.dword 6b,7b\n")#define __asm_copy_from_user_10x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_from_user_8x_cont(to, from, ret,	\		"	move.w [%1+],$r9\n"		\		"6:	move.w $r9,[%0+]\n" COPY,	\		"7:	addq 2,%2\n"			\		"	clear.w [%0+]\n" FIXUP,		\		"	.dword 6b,7b\n" TENTRY)#define __asm_copy_from_user_10(to, from, ret) \	__asm_copy_from_user_10x_cont(to, from, ret, "", "", "")#define __asm_copy_from_user_11(to, from, ret)		\	__asm_copy_from_user_10x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"8:	move.b $r9,[%0+]\n",		\		"9:	addq 1,%2\n"			\		"	clear.b [%0+]\n",		\		"	.dword 8b,9b\n")#define __asm_copy_from_user_12x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_from_user_8x_cont(to, from, ret,	\		"	move.d [%1+],$r9\n"		\		"6:	move.d $r9,[%0+]\n" COPY,	\		"7:	addq 4,%2\n"			\		"	clear.d [%0+]\n" FIXUP,		\		"	.dword 6b,7b\n" TENTRY)#define __asm_copy_from_user_12(to, from, ret) \	__asm_copy_from_user_12x_cont(to, from, ret, "", "", "")#define __asm_copy_from_user_13(to, from, ret) \	__asm_copy_from_user_12x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"8:	move.b $r9,[%0+]\n",		\		"9:	addq 1,%2\n"			\		"	clear.b [%0+]\n",		\		"	.dword 8b,9b\n")#define __asm_copy_from_user_14x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_from_user_12x_cont(to, from, ret,	\		"	move.w [%1+],$r9\n"		\		"8:	move.w $r9,[%0+]\n" COPY,	\		"9:	addq 2,%2\n"			\		"	clear.w [%0+]\n" FIXUP,		\		"	.dword 8b,9b\n" TENTRY)#define __asm_copy_from_user_14(to, from, ret) \	__asm_copy_from_user_14x_cont(to, from, ret, "", "", "")#define __asm_copy_from_user_15(to, from, ret) \	__asm_copy_from_user_14x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"10:	move.b $r9,[%0+]\n",		\		"11:	addq 1,%2\n"			\		"	clear.b [%0+]\n",		\		"	.dword 10b,11b\n")#define __asm_copy_from_user_16x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_from_user_12x_cont(to, from, ret,	\		"	move.d [%1+],$r9\n"		\		"8:	move.d $r9,[%0+]\n" COPY,	\		"9:	addq 4,%2\n"			\		"	clear.d [%0+]\n" FIXUP,		\		"	.dword 8b,9b\n" TENTRY)#define __asm_copy_from_user_16(to, from, ret) \	__asm_copy_from_user_16x_cont(to, from, ret, "", "", "")#define __asm_copy_from_user_20x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_from_user_16x_cont(to, from, ret,	\		"	move.d [%1+],$r9\n"		\		"10:	move.d $r9,[%0+]\n" COPY,	\		"11:	addq 4,%2\n"			\		"	clear.d [%0+]\n" FIXUP,		\		"	.dword 10b,11b\n" TENTRY)#define __asm_copy_from_user_20(to, from, ret) \	__asm_copy_from_user_20x_cont(to, from, ret, "", "", "")#define __asm_copy_from_user_24x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_from_user_20x_cont(to, from, ret,	\		"	move.d [%1+],$r9\n"		\		"12:	move.d $r9,[%0+]\n" COPY,	\		"13:	addq 4,%2\n"			\		"	clear.d [%0+]\n" FIXUP,		\		"	.dword 12b,13b\n" TENTRY)#define __asm_copy_from_user_24(to, from, ret) \	__asm_copy_from_user_24x_cont(to, from, ret, "", "", "")/* And now, the to-user ones.  */#define __asm_copy_to_user_1(to, from, ret)	\	__asm_copy_user_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"	\		"	move.b $r9,[%0+]\n2:\n",	\		"3:	addq 1,%2\n",		\		"	.dword 2b,3b\n")#define __asm_copy_to_user_2x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_user_cont(to, from, ret,		\		"	move.w [%1+],$r9\n"		\		"	move.w $r9,[%0+]\n2:\n" COPY,	\		"3:	addq 2,%2\n" FIXUP,		\		"	.dword 2b,3b\n" TENTRY)#define __asm_copy_to_user_2(to, from, ret) \	__asm_copy_to_user_2x_cont(to, from, ret, "", "", "")#define __asm_copy_to_user_3(to, from, ret) \	__asm_copy_to_user_2x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"	move.b $r9,[%0+]\n4:\n",		\		"5:	addq 1,%2\n",			\		"	.dword 4b,5b\n")#define __asm_copy_to_user_4x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_user_cont(to, from, ret,		\		"	move.d [%1+],$r9\n"		\		"	move.d $r9,[%0+]\n2:\n" COPY,	\		"3:	addq 4,%2\n" FIXUP,		\		"	.dword 2b,3b\n" TENTRY)#define __asm_copy_to_user_4(to, from, ret) \	__asm_copy_to_user_4x_cont(to, from, ret, "", "", "")#define __asm_copy_to_user_5(to, from, ret) \	__asm_copy_to_user_4x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"	move.b $r9,[%0+]\n4:\n",		\		"5:	addq 1,%2\n",			\		"	.dword 4b,5b\n")#define __asm_copy_to_user_6x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_to_user_4x_cont(to, from, ret,	\		"	move.w [%1+],$r9\n"		\		"	move.w $r9,[%0+]\n4:\n" COPY,	\		"5:	addq 2,%2\n" FIXUP,		\		"	.dword 4b,5b\n" TENTRY)#define __asm_copy_to_user_6(to, from, ret) \	__asm_copy_to_user_6x_cont(to, from, ret, "", "", "")#define __asm_copy_to_user_7(to, from, ret) \	__asm_copy_to_user_6x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"	move.b $r9,[%0+]\n6:\n",		\		"7:	addq 1,%2\n",			\		"	.dword 6b,7b\n")#define __asm_copy_to_user_8x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_to_user_4x_cont(to, from, ret,	\		"	move.d [%1+],$r9\n"		\		"	move.d $r9,[%0+]\n4:\n" COPY,	\		"5:	addq 4,%2\n"  FIXUP,		\		"	.dword 4b,5b\n" TENTRY)#define __asm_copy_to_user_8(to, from, ret) \	__asm_copy_to_user_8x_cont(to, from, ret, "", "", "")#define __asm_copy_to_user_9(to, from, ret) \	__asm_copy_to_user_8x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"	move.b $r9,[%0+]\n6:\n",		\		"7:	addq 1,%2\n",			\		"	.dword 6b,7b\n")#define __asm_copy_to_user_10x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_to_user_8x_cont(to, from, ret,	\		"	move.w [%1+],$r9\n"		\		"	move.w $r9,[%0+]\n6:\n" COPY,	\		"7:	addq 2,%2\n" FIXUP,		\		"	.dword 6b,7b\n" TENTRY)#define __asm_copy_to_user_10(to, from, ret) \	__asm_copy_to_user_10x_cont(to, from, ret, "", "", "")#define __asm_copy_to_user_11(to, from, ret) \	__asm_copy_to_user_10x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"	move.b $r9,[%0+]\n8:\n",		\		"9:	addq 1,%2\n",			\		"	.dword 8b,9b\n")#define __asm_copy_to_user_12x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_to_user_8x_cont(to, from, ret,	\		"	move.d [%1+],$r9\n"		\		"	move.d $r9,[%0+]\n6:\n" COPY,	\		"7:	addq 4,%2\n" FIXUP,		\		"	.dword 6b,7b\n" TENTRY)#define __asm_copy_to_user_12(to, from, ret) \	__asm_copy_to_user_12x_cont(to, from, ret, "", "", "")#define __asm_copy_to_user_13(to, from, ret) \	__asm_copy_to_user_12x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"	move.b $r9,[%0+]\n8:\n",		\		"9:	addq 1,%2\n",			\		"	.dword 8b,9b\n")#define __asm_copy_to_user_14x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_to_user_12x_cont(to, from, ret,	\		"	move.w [%1+],$r9\n"		\		"	move.w $r9,[%0+]\n8:\n" COPY,	\		"9:	addq 2,%2\n" FIXUP,		\		"	.dword 8b,9b\n" TENTRY)#define __asm_copy_to_user_14(to, from, ret)	\	__asm_copy_to_user_14x_cont(to, from, ret, "", "", "")#define __asm_copy_to_user_15(to, from, ret) \	__asm_copy_to_user_14x_cont(to, from, ret,	\		"	move.b [%1+],$r9\n"		\		"	move.b $r9,[%0+]\n10:\n",		\		"11:	addq 1,%2\n",			\		"	.dword 10b,11b\n")#define __asm_copy_to_user_16x_cont(to, from, ret, COPY, FIXUP, TENTRY) \	__asm_copy_to_user_12x_cont(to, from, ret,	\		"	move.d [%1+],$r9\n"		\

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