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Source at commit 0de2b2b3be81048189a32f7a3d3ba0ba9ec817b6 created 11 years 11 months ago. By Maarten ter Huurne, MIPS: JZ4740: Fixed value for round robin constant. | |
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1 | /* U1copy_to_user.S: UltraSparc-I/II/IIi/IIe optimized copy to userspace. |
2 | * |
3 | * Copyright (C) 1999, 2000, 2004 David S. Miller (davem@redhat.com) |
4 | */ |
5 | |
6 | #define EX_ST(x) \ |
7 | 98: x; \ |
8 | .section __ex_table,"a";\ |
9 | .align 4; \ |
10 | .word 98b, __retl_one; \ |
11 | .text; \ |
12 | .align 4; |
13 | |
14 | #define FUNC_NAME ___copy_to_user |
15 | #define STORE(type,src,addr) type##a src, [addr] ASI_AIUS |
16 | #define STORE_BLK(src,addr) stda src, [addr] ASI_BLK_AIUS |
17 | #define EX_RETVAL(x) 0 |
18 | |
19 | /* Writing to %asi is _expensive_ so we hardcode it. |
20 | * Reading %asi to check for KERNEL_DS is comparatively |
21 | * cheap. |
22 | */ |
23 | #define PREAMBLE \ |
24 | rd %asi, %g1; \ |
25 | cmp %g1, ASI_AIUS; \ |
26 | bne,pn %icc, ___copy_in_user; \ |
27 | nop; \ |
28 | |
29 | #include "U1memcpy.S" |
30 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9