mirror of https://gitee.com/openkylin/linux.git
41 lines
786 B
ArmAsm
41 lines
786 B
ArmAsm
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/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
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*
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* Copyright (C) 2007 David S. Miller (davem@davemloft.net)
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*/
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#define EX_LD(x) \
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98: x; \
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.section .fixup; \
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.align 4; \
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99: wr %g0, ASI_AIUS, %asi;\
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retl; \
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mov 1, %o0; \
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.section __ex_table,"a";\
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.align 4; \
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.word 98b, 99b; \
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.text; \
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.align 4;
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#ifndef ASI_AIUS
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#define ASI_AIUS 0x11
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#endif
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#ifndef ASI_BLK_AIUS_4V
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#define ASI_BLK_AIUS_4V 0x17
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#endif
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#define FUNC_NAME NG2copy_from_user
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#define LOAD(type,addr,dest) type##a [addr] %asi, dest
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#define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS_4V, dest
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#define EX_RETVAL(x) 0
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#ifdef __KERNEL__
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#define PREAMBLE \
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rd %asi, %g1; \
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cmp %g1, ASI_AIUS; \
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bne,pn %icc, memcpy_user_stub; \
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nop
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#endif
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#include "NG2memcpy.S"
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