PageRenderTime 13ms CodeModel.GetById 8ms app.highlight 2ms RepoModel.GetById 1ms app.codeStats 0ms

/arch/sparc64/lib/U3copy_to_user.S

https://bitbucket.org/evzijst/gittest
Assembly | 33 lines | 29 code | 4 blank | 0 comment | 1 complexity | 203612722efe083b2f51e4752b25f553 MD5 | raw file
 1/* U3copy_to_user.S: UltraSparc-III optimized copy to userspace.
 2 *
 3 * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com)
 4 */
 5
 6#define EX_ST(x)		\
 798:	x;			\
 8	.section .fixup;	\
 9	.align 4;		\
1099:	retl;			\
11	 mov	1, %o0;		\
12	.section __ex_table;	\
13	.align 4;		\
14	.word 98b, 99b;		\
15	.text;			\
16	.align 4;
17
18#define FUNC_NAME		U3copy_to_user
19#define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
20#define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_AIUS
21#define EX_RETVAL(x)		0
22
23	/* Writing to %asi is _expensive_ so we hardcode it.
24	 * Reading %asi to check for KERNEL_DS is comparatively
25	 * cheap.
26	 */
27#define PREAMBLE					\
28	rd		%asi, %g1;			\
29	cmp		%g1, ASI_AIUS;			\
30	bne,pn		%icc, memcpy_user_stub;		\
31	 nop;						\
32
33#include "U3memcpy.S"