source: mainline/kernel/arch/sparc64/src/asm.S@ 34e1206

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 34e1206 was a35b458, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 8 years ago

style: Remove trailing whitespace on _all_ lines, including empty ones, for particular file types.

Command used: tools/srepl '\s\+$' '' -- *.c *.h *.py *.sh *.s *.S *.ag

Currently, whitespace on empty lines is very inconsistent.
There are two basic choices: Either remove the whitespace, or keep empty lines
indented to the level of surrounding code. The former is AFAICT more common,
and also much easier to do automatically.

Alternatively, we could write script for automatic indentation, and use that
instead. However, if such a script exists, it's possible to use the indented
style locally, by having the editor apply relevant conversions on load/save,
without affecting remote repository. IMO, it makes more sense to adopt
the simpler rule.
  • Property mode set to 100644
File size: 3.8 KB
Line 
1/*
2 * Copyright (c) 2005 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <abi/asmtool.h>
30#include <arch/arch.h>
31#include <arch/stack.h>
32
33.text
34
35.register %g2, #scratch
36.register %g3, #scratch
37
38/*
39 * Almost the same as memcpy() except the loads are from userspace.
40 */
41FUNCTION_BEGIN(memcpy_from_uspace)
42 mov %o0, %o3 /* save dst */
43 add %o1, 7, %g1
44 and %g1, -8, %g1
45 cmp %o1, %g1
46 be,pn %xcc, 3f
47 add %o0, 7, %g1
48 mov 0, %g3
49
50 0:
51
52 brz,pn %o2, 2f
53 mov 0, %g2
54
55 1:
56
57 lduba [%g3 + %o1] ASI_AIUS, %g1
58 add %g2, 1, %g2
59 cmp %o2, %g2
60 stb %g1, [%g3 + %o0]
61 bne,pt %xcc, 1b
62 mov %g2, %g3
63
64 2:
65
66 jmp %o7 + 8 /* exit point */
67 mov %o3, %o0
68
69 3:
70
71 and %g1, -8, %g1
72 cmp %o0, %g1
73 bne,pt %xcc, 0b
74 mov 0, %g3
75 srlx %o2, 3, %g4
76 brz,pn %g4, 5f
77 mov 0, %g5
78
79 4:
80
81 sllx %g3, 3, %g2
82 add %g5, 1, %g3
83 ldxa [%o1 + %g2] ASI_AIUS, %g1
84 mov %g3, %g5
85 cmp %g4, %g3
86 bne,pt %xcc, 4b
87 stx %g1, [%o0 + %g2]
88
89 5:
90
91 and %o2, 7, %o2
92 brz,pn %o2, 2b
93 sllx %g4, 3, %g1
94 mov 0, %g2
95 add %g1, %o0, %o0
96 add %g1, %o1, %g4
97 mov 0, %g3
98
99 6:
100
101 lduba [%g2 + %g4] ASI_AIUS, %g1
102 stb %g1, [%g2 + %o0]
103 add %g3, 1, %g2
104 cmp %o2, %g2
105 bne,pt %xcc, 6b
106 mov %g2, %g3
107
108 jmp %o7 + 8 /* exit point */
109 mov %o3, %o0
110FUNCTION_END(memcpy_from_uspace)
111
112/*
113 * Almost the same as memcpy() except the stores are to userspace.
114 */
115FUNCTION_BEGIN(memcpy_to_uspace)
116 mov %o0, %o3 /* save dst */
117 add %o1, 7, %g1
118 and %g1, -8, %g1
119 cmp %o1, %g1
120 be,pn %xcc, 3f
121 add %o0, 7, %g1
122 mov 0, %g3
123
124 0:
125
126 brz,pn %o2, 2f
127 mov 0, %g2
128
129 1:
130
131 ldub [%g3 + %o1], %g1
132 add %g2, 1, %g2
133 cmp %o2, %g2
134 stba %g1, [%g3 + %o0] ASI_AIUS
135 bne,pt %xcc, 1b
136 mov %g2, %g3
137
138 2:
139
140 jmp %o7 + 8 /* exit point */
141 mov %o3, %o0
142
143 3:
144
145 and %g1, -8, %g1
146 cmp %o0, %g1
147 bne,pt %xcc, 0b
148 mov 0, %g3
149 srlx %o2, 3, %g4
150 brz,pn %g4, 5f
151 mov 0, %g5
152
153 4:
154
155 sllx %g3, 3, %g2
156 add %g5, 1, %g3
157 ldx [%o1 + %g2], %g1
158 mov %g3, %g5
159 cmp %g4, %g3
160 bne,pt %xcc, 4b
161 stxa %g1, [%o0 + %g2] ASI_AIUS
162
163 5:
164
165 and %o2, 7, %o2
166 brz,pn %o2, 2b
167 sllx %g4, 3, %g1
168 mov 0, %g2
169 add %g1, %o0, %o0
170 add %g1, %o1, %g4
171 mov 0, %g3
172
173 6:
174
175 ldub [%g2 + %g4], %g1
176 stba %g1, [%g2 + %o0] ASI_AIUS
177 add %g3, 1, %g2
178 cmp %o2, %g2
179 bne,pt %xcc, 6b
180 mov %g2, %g3
181
182 jmp %o7 + 8 /* exit point */
183 mov %o3, %o0
184FUNCTION_END(memcpy_to_uspace)
185
186SYMBOL(memcpy_from_uspace_failover_address)
187SYMBOL(memcpy_to_uspace_failover_address)
188 jmp %o7 + 8 /* exit point */
189 mov %g0, %o0 /* return 0 on failure */
190
191FUNCTION_BEGIN(early_putchar)
192 retl
193 nop
194FUNCTION_END(early_putchar)
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