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- // SPDX-License-Identifier: GPL-2.0
- // Copyright (C) 2005-2017 Andes Technology Corporation
- #include <linux/linkage.h>
- #include <asm/assembler.h>
- #include <asm/errno.h>
- .macro lbi1 dst, addr, adj
- USER( lbi.bi, \dst, [\addr], \adj)
- .endm
- .macro sbi1 src, addr, adj
- sbi.bi \src, [\addr], \adj
- .endm
- .macro lmw1 start_reg, addr, end_reg
- USER( lmw.bim, \start_reg, [\addr], \end_reg)
- .endm
- .macro smw1 start_reg, addr, end_reg
- smw.bim \start_reg, [\addr], \end_reg
- .endm
- /* Prototype: int __arch_copy_from_user(void *to, const char *from, size_t n)
- * Purpose : copy a block from user memory to kernel memory
- * Params : to - kernel memory
- * : from - user memory
- * : n - number of bytes to copy
- * Returns : Number of bytes NOT copied.
- */
- .text
- ENTRY(__arch_copy_from_user)
- add $r5, $r0, $r2
- #include "copy_template.S"
- move $r0, $r2
- ret
- .section .fixup,"ax"
- .align 2
- 9001:
- sub $r0, $r5, $r0
- ret
- .previous
- ENDPROC(__arch_copy_from_user)
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