Release 4.7 arch/sh/include/asm/uaccess_32.h
/*
* User space memory access functions
*
* Copyright (C) 1999, 2002 Niibe Yutaka
* Copyright (C) 2003 - 2008 Paul Mundt
*
* Based on:
* MIPS implementation version 1.15 by
* Copyright (C) 1996, 1997, 1998 by Ralf Baechle
* and i386 version.
*/
#ifndef __ASM_SH_UACCESS_32_H
#define __ASM_SH_UACCESS_32_H
#define __get_user_size(x,ptr,size,retval) \
do { \
retval = 0; \
switch (size) { \
case 1: \
__get_user_asm(x, ptr, retval, "b"); \
break; \
case 2: \
__get_user_asm(x, ptr, retval, "w"); \
break; \
case 4: \
__get_user_asm(x, ptr, retval, "l"); \
break; \
default: \
__get_user_unknown(); \
break; \
} \
} while (0)
#ifdef CONFIG_MMU
#define __get_user_asm(x, addr, err, insn) \
({ \
__asm__ __volatile__( \
"1:\n\t" \
"mov." insn " %2, %1\n\t" \
"2:\n" \
".section .fixup,\"ax\"\n" \
"3:\n\t" \
"mov #0, %1\n\t" \
"mov.l 4f, %0\n\t" \
"jmp @%0\n\t" \
" mov %3, %0\n\t" \
".balign 4\n" \
"4: .long 2b\n\t" \
".previous\n" \
".section __ex_table,\"a\"\n\t" \
".long 1b, 3b\n\t" \
".previous" \
:"=&r" (err), "=&r" (x) \
:"m" (__m(addr)), "i" (-EFAULT), "0" (err)); })
#else
#define __get_user_asm(x, addr, err, insn) \
do { \
__asm__ __volatile__ ( \
"mov." insn " %1, %0\n\t" \
: "=&r" (x) \
: "m" (__m(addr)) \
); \
} while (0)
#endif /* CONFIG_MMU */
extern void __get_user_unknown(void);
#define __put_user_size(x,ptr,size,retval) \
do { \
retval = 0; \
switch (size) { \
case 1: \
__put_user_asm(x, ptr, retval, "b"); \
break; \
case 2: \
__put_user_asm(x, ptr, retval, "w"); \
break; \
case 4: \
__put_user_asm(x, ptr, retval, "l"); \
break; \
case 8: \
__put_user_u64(x, ptr, retval); \
break; \
default: \
__put_user_unknown(); \
} \
} while (0)
#ifdef CONFIG_MMU
#define __put_user_asm(x, addr, err, insn) \
do { \
__asm__ __volatile__ ( \
"1:\n\t" \
"mov." insn " %1, %2\n\t" \
"2:\n" \
".section .fixup,\"ax\"\n" \
"3:\n\t" \
"mov.l 4f, %0\n\t" \
"jmp @%0\n\t" \
" mov %3, %0\n\t" \
".balign 4\n" \
"4: .long 2b\n\t" \
".previous\n" \
".section __ex_table,\"a\"\n\t" \
".long 1b, 3b\n\t" \
".previous" \
: "=&r" (err) \
: "r" (x), "m" (__m(addr)), "i" (-EFAULT), \
"0" (err) \
: "memory" \
); \
} while (0)
#else
#define __put_user_asm(x, addr, err, insn) \
do { \
__asm__ __volatile__ ( \
"mov." insn " %0, %1\n\t" \
: /* no outputs */ \
: "r" (x), "m" (__m(addr)) \
: "memory" \
); \
} while (0)
#endif /* CONFIG_MMU */
#if defined(CONFIG_CPU_LITTLE_ENDIAN)
#define __put_user_u64(val,addr,retval) \
({ \
__asm__ __volatile__( \
"1:\n\t" \
"mov.l %R1,%2\n\t" \
"mov.l %S1,%T2\n\t" \
"2:\n" \
".section .fixup,\"ax\"\n" \
"3:\n\t" \
"mov.l 4f,%0\n\t" \
"jmp @%0\n\t" \
" mov %3,%0\n\t" \
".balign 4\n" \
"4: .long 2b\n\t" \
".previous\n" \
".section __ex_table,\"a\"\n\t" \
".long 1b, 3b\n\t" \
".previous" \
: "=r" (retval) \
: "r" (val), "m" (__m(addr)), "i" (-EFAULT), "0" (retval) \
: "memory"); })
#else
#define __put_user_u64(val,addr,retval) \
({ \
__asm__ __volatile__( \
"1:\n\t" \
"mov.l %S1,%2\n\t" \
"mov.l %R1,%T2\n\t" \
"2:\n" \
".section .fixup,\"ax\"\n" \
"3:\n\t" \
"mov.l 4f,%0\n\t" \
"jmp @%0\n\t" \
" mov %3,%0\n\t" \
".balign 4\n" \
"4: .long 2b\n\t" \
".previous\n" \
".section __ex_table,\"a\"\n\t" \
".long 1b, 3b\n\t" \
".previous" \
: "=r" (retval) \
: "r" (val), "m" (__m(addr)), "i" (-EFAULT), "0" (retval) \
: "memory"); })
#endif
extern void __put_user_unknown(void);
#endif /* __ASM_SH_UACCESS_32_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| paul mundt | paul mundt | 153 | 95.62% | 4 | 57.14% |
| stuart menefy | stuart menefy | 3 | 1.88% | 1 | 14.29% |
| magnus damm | magnus damm | 3 | 1.88% | 1 | 14.29% |
| hirofumi ogawa | hirofumi ogawa | 1 | 0.62% | 1 | 14.29% |
| Total | 160 | 100.00% | 7 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.