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/*
* __put_user functions.
*
* (C) Copyright 1998 Linus Torvalds
* (C) Copyright 2001 Hirokazu Takata
*
* These functions have a non-standard call interface
* to make them more efficient.
*/
#include <linux/config.h>
/*
* __put_user_X
*
* Inputs: r0 contains the address
* r1 contains the value
*
* Outputs: r0 is error code (0 or -EFAULT)
* r1 is corrupted (will contain "current_task").
*
* These functions should not modify any other registers,
* as they get called from within inline assembly.
*/
#ifdef CONFIG_ISA_DUAL_ISSUE
.text
.balign 4
.globl __put_user_1
__put_user_1:
1: stb r1, @r0 || ldi r0, #0
jmp r14
.balign 4
.globl __put_user_2
__put_user_2:
2: sth r1, @r0 || ldi r0, #0
jmp r14
.balign 4
.globl __put_user_4
__put_user_4:
3: st r1, @r0 || ldi r0, #0
jmp r14
bad_put_user:
ldi r0, #-14 || jmp r14
#else /* not CONFIG_ISA_DUAL_ISSUE */
.text
.balign 4
.globl __put_user_1
__put_user_1:
1: stb r1, @r0
ldi r0, #0
jmp r14
.balign 4
.globl __put_user_2
__put_user_2:
2: sth r1, @r0
ldi r0, #0
jmp r14
.balign 4
.globl __put_user_4
__put_user_4:
3: st r1, @r0
ldi r0, #0
jmp r14
bad_put_user:
ldi r0, #-14
jmp r14
#endif /* not CONFIG_ISA_DUAL_ISSUE */
.section __ex_table,"a"
.long 1b,bad_put_user
.long 2b,bad_put_user
.long 3b,bad_put_user
.previous
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