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author | Thomas Martitz <kugel@rockbox.org> | 2012-01-07 19:56:09 +0100 |
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committer | Thomas Martitz <kugel@rockbox.org> | 2012-01-22 18:46:45 +0100 |
commit | a035261089403de259e74ce4dd196e2715138ed2 (patch) | |
tree | 440d75109a7ebfefef2a58076b38b1bfe9db8f63 /firmware/asm/mips/memset.S | |
parent | 8e8e978de6b6283b66a6829fa8c5e3b94674ce7d (diff) | |
download | rockbox-a035261089403de259e74ce4dd196e2715138ed2.tar.gz rockbox-a035261089403de259e74ce4dd196e2715138ed2.zip |
Move optimized memcpy and friends and strlen to firmware/asm,
using the new automatic-asm-picking infrastructure.
Diffstat (limited to 'firmware/asm/mips/memset.S')
-rw-r--r-- | firmware/asm/mips/memset.S | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/firmware/asm/mips/memset.S b/firmware/asm/mips/memset.S new file mode 100644 index 0000000000..8db76d9123 --- /dev/null +++ b/firmware/asm/mips/memset.S | |||
@@ -0,0 +1,239 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * This file was originally part of the Linux/MIPS GNU C Library | ||
11 | * Copyright (C) 1998 by Ralf Baechle | ||
12 | * Adapted for Rockbox by Maurus Cuelenaere, 2009 | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | |||
24 | #include "config.h" | ||
25 | #include "mips.h" | ||
26 | |||
27 | #define FILL256(dst, offset, val) \ | ||
28 | sw val, (offset + 0x00)(dst); \ | ||
29 | sw val, (offset + 0x04)(dst); \ | ||
30 | sw val, (offset + 0x08)(dst); \ | ||
31 | sw val, (offset + 0x0c)(dst); \ | ||
32 | sw val, (offset + 0x10)(dst); \ | ||
33 | sw val, (offset + 0x14)(dst); \ | ||
34 | sw val, (offset + 0x18)(dst); \ | ||
35 | sw val, (offset + 0x1c)(dst); \ | ||
36 | sw val, (offset + 0x20)(dst); \ | ||
37 | sw val, (offset + 0x24)(dst); \ | ||
38 | sw val, (offset + 0x28)(dst); \ | ||
39 | sw val, (offset + 0x2c)(dst); \ | ||
40 | sw val, (offset + 0x30)(dst); \ | ||
41 | sw val, (offset + 0x34)(dst); \ | ||
42 | sw val, (offset + 0x38)(dst); \ | ||
43 | sw val, (offset + 0x3c)(dst); \ | ||
44 | sw val, (offset + 0x40)(dst); \ | ||
45 | sw val, (offset + 0x44)(dst); \ | ||
46 | sw val, (offset + 0x48)(dst); \ | ||
47 | sw val, (offset + 0x4c)(dst); \ | ||
48 | sw val, (offset + 0x50)(dst); \ | ||
49 | sw val, (offset + 0x54)(dst); \ | ||
50 | sw val, (offset + 0x58)(dst); \ | ||
51 | sw val, (offset + 0x5c)(dst); \ | ||
52 | sw val, (offset + 0x60)(dst); \ | ||
53 | sw val, (offset + 0x64)(dst); \ | ||
54 | sw val, (offset + 0x68)(dst); \ | ||
55 | sw val, (offset + 0x6c)(dst); \ | ||
56 | sw val, (offset + 0x70)(dst); \ | ||
57 | sw val, (offset + 0x74)(dst); \ | ||
58 | sw val, (offset + 0x78)(dst); \ | ||
59 | sw val, (offset + 0x7c)(dst); \ | ||
60 | sw val, (offset + 0x80)(dst); \ | ||
61 | sw val, (offset + 0x84)(dst); \ | ||
62 | sw val, (offset + 0x88)(dst); \ | ||
63 | sw val, (offset + 0x8c)(dst); \ | ||
64 | sw val, (offset + 0x90)(dst); \ | ||
65 | sw val, (offset + 0x94)(dst); \ | ||
66 | sw val, (offset + 0x98)(dst); \ | ||
67 | sw val, (offset + 0x9c)(dst); \ | ||
68 | sw val, (offset + 0xa0)(dst); \ | ||
69 | sw val, (offset + 0xa4)(dst); \ | ||
70 | sw val, (offset + 0xa8)(dst); \ | ||
71 | sw val, (offset + 0xac)(dst); \ | ||
72 | sw val, (offset + 0xb0)(dst); \ | ||
73 | sw val, (offset + 0xb4)(dst); \ | ||
74 | sw val, (offset + 0xb8)(dst); \ | ||
75 | sw val, (offset + 0xbc)(dst); \ | ||
76 | sw val, (offset + 0xc0)(dst); \ | ||
77 | sw val, (offset + 0xc4)(dst); \ | ||
78 | sw val, (offset + 0xc8)(dst); \ | ||
79 | sw val, (offset + 0xcc)(dst); \ | ||
80 | sw val, (offset + 0xd0)(dst); \ | ||
81 | sw val, (offset + 0xd4)(dst); \ | ||
82 | sw val, (offset + 0xd8)(dst); \ | ||
83 | sw val, (offset + 0xdc)(dst); \ | ||
84 | sw val, (offset + 0xe0)(dst); \ | ||
85 | sw val, (offset + 0xe4)(dst); \ | ||
86 | sw val, (offset + 0xe8)(dst); \ | ||
87 | sw val, (offset + 0xec)(dst); \ | ||
88 | sw val, (offset + 0xf0)(dst); \ | ||
89 | sw val, (offset + 0xf4)(dst); \ | ||
90 | sw val, (offset + 0xf8)(dst); \ | ||
91 | sw val, (offset + 0xfc)(dst); | ||
92 | |||
93 | #define FILL128(dst, offset, val) \ | ||
94 | sw val, (offset + 0x00)(dst); \ | ||
95 | sw val, (offset + 0x04)(dst); \ | ||
96 | sw val, (offset + 0x08)(dst); \ | ||
97 | sw val, (offset + 0x0c)(dst); \ | ||
98 | sw val, (offset + 0x10)(dst); \ | ||
99 | sw val, (offset + 0x14)(dst); \ | ||
100 | sw val, (offset + 0x18)(dst); \ | ||
101 | sw val, (offset + 0x1c)(dst); \ | ||
102 | sw val, (offset + 0x20)(dst); \ | ||
103 | sw val, (offset + 0x24)(dst); \ | ||
104 | sw val, (offset + 0x28)(dst); \ | ||
105 | sw val, (offset + 0x2c)(dst); \ | ||
106 | sw val, (offset + 0x30)(dst); \ | ||
107 | sw val, (offset + 0x34)(dst); \ | ||
108 | sw val, (offset + 0x38)(dst); \ | ||
109 | sw val, (offset + 0x3c)(dst); \ | ||
110 | sw val, (offset + 0x40)(dst); \ | ||
111 | sw val, (offset + 0x44)(dst); \ | ||
112 | sw val, (offset + 0x48)(dst); \ | ||
113 | sw val, (offset + 0x4c)(dst); \ | ||
114 | sw val, (offset + 0x50)(dst); \ | ||
115 | sw val, (offset + 0x54)(dst); \ | ||
116 | sw val, (offset + 0x58)(dst); \ | ||
117 | sw val, (offset + 0x5c)(dst); \ | ||
118 | sw val, (offset + 0x60)(dst); \ | ||
119 | sw val, (offset + 0x64)(dst); \ | ||
120 | sw val, (offset + 0x68)(dst); \ | ||
121 | sw val, (offset + 0x6c)(dst); \ | ||
122 | sw val, (offset + 0x70)(dst); \ | ||
123 | sw val, (offset + 0x74)(dst); \ | ||
124 | sw val, (offset + 0x78)(dst); \ | ||
125 | sw val, (offset + 0x7c)(dst); | ||
126 | |||
127 | #define FILL64(dst, offset, val) \ | ||
128 | sw val, (offset + 0x00)(dst); \ | ||
129 | sw val, (offset + 0x04)(dst); \ | ||
130 | sw val, (offset + 0x08)(dst); \ | ||
131 | sw val, (offset + 0x0c)(dst); \ | ||
132 | sw val, (offset + 0x10)(dst); \ | ||
133 | sw val, (offset + 0x14)(dst); \ | ||
134 | sw val, (offset + 0x18)(dst); \ | ||
135 | sw val, (offset + 0x1c)(dst); \ | ||
136 | sw val, (offset + 0x20)(dst); \ | ||
137 | sw val, (offset + 0x24)(dst); \ | ||
138 | sw val, (offset + 0x28)(dst); \ | ||
139 | sw val, (offset + 0x2c)(dst); \ | ||
140 | sw val, (offset + 0x30)(dst); \ | ||
141 | sw val, (offset + 0x34)(dst); \ | ||
142 | sw val, (offset + 0x38)(dst); \ | ||
143 | sw val, (offset + 0x3c)(dst); | ||
144 | |||
145 | #define FILL32(dst, offset, val) \ | ||
146 | sw val, (offset + 0x00)(dst); \ | ||
147 | sw val, (offset + 0x04)(dst); \ | ||
148 | sw val, (offset + 0x08)(dst); \ | ||
149 | sw val, (offset + 0x0c)(dst); \ | ||
150 | sw val, (offset + 0x10)(dst); \ | ||
151 | sw val, (offset + 0x14)(dst); \ | ||
152 | sw val, (offset + 0x18)(dst); \ | ||
153 | sw val, (offset + 0x1c)(dst); | ||
154 | |||
155 | #define FILL 64 | ||
156 | #define F_FILL FILL64 | ||
157 | |||
158 | |||
159 | #ifdef ROCKBOX_BIG_ENDIAN | ||
160 | # define SWHI swl /* high part is left in big-endian */ | ||
161 | #else | ||
162 | # define SWHI swr /* high part is right in little-endian */ | ||
163 | #endif | ||
164 | |||
165 | /* | ||
166 | * memset(void *s, int c, size_t n) | ||
167 | * | ||
168 | * a0: start of area to clear | ||
169 | * a1: char to fill with | ||
170 | * a2: size of area to clear | ||
171 | */ | ||
172 | .section .icode, "ax", %progbits | ||
173 | |||
174 | .global memset | ||
175 | .type memset, %function | ||
176 | |||
177 | .set noreorder | ||
178 | .align 5 | ||
179 | memset: | ||
180 | beqz a1, 1f | ||
181 | move v0, a0 /* result */ | ||
182 | |||
183 | andi a1, 0xff /* spread fillword */ | ||
184 | sll t1, a1, 8 | ||
185 | or a1, t1 | ||
186 | sll t1, a1, 16 | ||
187 | or a1, t1 | ||
188 | 1: | ||
189 | |||
190 | sltiu t0, a2, 4 /* very small region? */ | ||
191 | bnez t0, small_memset | ||
192 | andi t0, a0, 3 /* aligned? */ | ||
193 | |||
194 | beqz t0, 1f | ||
195 | subu t0, 4 /* alignment in bytes */ | ||
196 | |||
197 | SWHI a1, (a0) /* make word aligned */ | ||
198 | subu a0, t0 /* word align ptr */ | ||
199 | addu a2, t0 /* correct size */ | ||
200 | |||
201 | 1: ori t1, a2, (FILL-1) /* # of full blocks */ | ||
202 | xori t1, (FILL-1) | ||
203 | beqz t1, memset_partial /* no block to fill */ | ||
204 | andi t0, a2, (FILL-4) | ||
205 | |||
206 | addu t1, a0 /* end address */ | ||
207 | .set reorder | ||
208 | 1: addiu a0, FILL | ||
209 | F_FILL( a0, -FILL, a1 ) | ||
210 | bne t1, a0, 1b | ||
211 | .set noreorder | ||
212 | |||
213 | memset_partial: | ||
214 | la t1, 2f /* where to start */ | ||
215 | subu t1, t0 | ||
216 | jr t1 | ||
217 | addu a0, t0 /* dest ptr */ | ||
218 | |||
219 | F_FILL( a0, -FILL, a1 ) /* ... but first do words ... */ | ||
220 | 2: andi a2, 3 /* 0 <= n <= 3 to go */ | ||
221 | |||
222 | beqz a2, 1f | ||
223 | addu a0, a2 /* What's left */ | ||
224 | SWHI a1, -1(a0) | ||
225 | 1: jr ra | ||
226 | move a2, zero | ||
227 | |||
228 | small_memset: | ||
229 | beqz a2, 2f | ||
230 | addu t1, a0, a2 | ||
231 | |||
232 | 1: addiu a0, 1 /* fill bytewise */ | ||
233 | bne t1, a0, 1b | ||
234 | sb a1, -1(a0) | ||
235 | |||
236 | 2: jr ra /* done */ | ||
237 | move a2, zero | ||
238 | |||
239 | .set reorder | ||