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ace02e2bad
This patch add support for various library functions. Signed-off-by: Vincent Chen <vincentc@andestech.com> Signed-off-by: Greentime Hu <greentime@andestech.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
46 lines
978 B
ArmAsm
46 lines
978 B
ArmAsm
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2005-2017 Andes Technology Corporation
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#include <linux/linkage.h>
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#include <asm/assembler.h>
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#include <asm/errno.h>
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.macro lbi1 dst, addr, adj
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USER( lbi.bi, \dst, [\addr], \adj)
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.endm
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.macro sbi1 src, addr, adj
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sbi.bi \src, [\addr], \adj
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.endm
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.macro lmw1 start_reg, addr, end_reg
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USER( lmw.bim, \start_reg, [\addr], \end_reg)
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.endm
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.macro smw1 start_reg, addr, end_reg
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smw.bim \start_reg, [\addr], \end_reg
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.endm
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/* Prototype: int __arch_copy_from_user(void *to, const char *from, size_t n)
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* Purpose : copy a block from user memory to kernel memory
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* Params : to - kernel memory
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* : from - user memory
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* : n - number of bytes to copy
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* Returns : Number of bytes NOT copied.
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*/
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.text
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ENTRY(__arch_copy_from_user)
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add $r5, $r0, $r2
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#include "copy_template.S"
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move $r0, $r2
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ret
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.section .fixup,"ax"
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.align 2
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9001:
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sub $r0, $r5, $r0
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ret
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.previous
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ENDPROC(__arch_copy_from_user)
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