![Paul Mundt](/assets/img/avatar_default.png)
This discards both the _32 and _64 versions in favour of the consolidated generic one. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
174 lines
3.7 KiB
C
174 lines
3.7 KiB
C
/*
|
|
* 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 */
|