/*
* __get_user functions.
*
* (C) Copyright 2001 Hirokazu Takata
*
* These functions have a non-standard call interface
* to make them more efficient, especially as they
* return an error value in addition to the "real"
* return value.
*/
#include <linux/config.h>
/*
* __get_user_X
*
* Inputs: r0 contains the address
*
* Outputs: r0 is error code (0 or -EFAULT)
* r1 contains zero-extended value
*
* 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 __get_user_1
__get_user_1:
1: ldub r1, @r0 || ldi r0, #0
jmp r14
.balign 4
.globl __get_user_2
__get_user_2:
2: lduh r1, @r0 || ldi r0, #0
jmp r14
.balign 4
.globl __get_user_4
__get_user_4:
3: ld r1, @r0 || ldi r0, #0
jmp r14
bad_get_user:
ldi r1, #0 || ldi r0, #-14
jmp r14
#else /* not CONFIG_ISA_DUAL_ISSUE */
.text
.balign 4
.globl __get_user_1
__get_user_1:
1: ldub r1, @r0
ldi r0, #0
jmp r14
.balign 4
.globl __get_user_2
__get_user_2:
2: lduh r1, @r0
ldi r0, #0
jmp r14
.balign 4
.globl __get_user_4
__get_user_4:
3: ld r1, @r0
ldi r0, #0
jmp r14
bad_get_user:
ldi r1, #0
ldi r0, #-14
jmp r14
#endif /* not CONFIG_ISA_DUAL_ISSUE */
.section __ex_table,"a"
.long 1b,bad_get_user
.long 2b,bad_get_user
.long 3b,bad_get_user
.previous
.end
