| // 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) |
