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2ba45a60 DM |
1 | /* |
2 | * Alpha optimized IDCT-related routines | |
3 | * Copyright (c) 2002 Falk Hueffner <falk@debian.org> | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | /* | |
23 | * These functions are scheduled for pca56. They should work | |
24 | * reasonably on ev6, though. | |
25 | */ | |
26 | ||
27 | #include "regdef.h" | |
28 | ||
29 | .set noat | |
30 | .set noreorder | |
31 | .arch pca56 | |
32 | .text | |
33 | ||
34 | /************************************************************************ | |
35 | * void put_pixels_clamped_mvi_asm(const int16_t *block, uint8_t *pixels, | |
f6fa7814 | 36 | * ptrdiff_t line_size) |
2ba45a60 DM |
37 | */ |
38 | .align 6 | |
39 | .globl put_pixels_clamped_mvi_asm | |
40 | .ent put_pixels_clamped_mvi_asm | |
41 | put_pixels_clamped_mvi_asm: | |
42 | .frame sp, 0, ra | |
43 | .prologue 0 | |
44 | ||
45 | lda t8, -1 | |
46 | lda t9, 8 # loop counter | |
47 | zap t8, 0xaa, t8 # 00ff00ff00ff00ff | |
48 | ||
49 | .align 4 | |
50 | 1: ldq t0, 0(a0) | |
51 | ldq t1, 8(a0) | |
52 | ldq t2, 16(a0) | |
53 | ldq t3, 24(a0) | |
54 | ||
55 | maxsw4 t0, zero, t0 | |
56 | subq t9, 2, t9 | |
57 | maxsw4 t1, zero, t1 | |
58 | lda a0, 32(a0) | |
59 | ||
60 | maxsw4 t2, zero, t2 | |
61 | addq a1, a2, ta | |
62 | maxsw4 t3, zero, t3 | |
63 | minsw4 t0, t8, t0 | |
64 | ||
65 | minsw4 t1, t8, t1 | |
66 | minsw4 t2, t8, t2 | |
67 | minsw4 t3, t8, t3 | |
68 | pkwb t0, t0 | |
69 | ||
70 | pkwb t1, t1 | |
71 | pkwb t2, t2 | |
72 | pkwb t3, t3 | |
73 | stl t0, 0(a1) | |
74 | ||
75 | stl t1, 4(a1) | |
76 | addq ta, a2, a1 | |
77 | stl t2, 0(ta) | |
78 | stl t3, 4(ta) | |
79 | ||
80 | bne t9, 1b | |
81 | ret | |
82 | .end put_pixels_clamped_mvi_asm | |
83 | ||
84 | /************************************************************************ | |
85 | * void add_pixels_clamped_mvi_asm(const int16_t *block, uint8_t *pixels, | |
f6fa7814 | 86 | * ptrdiff_t line_size) |
2ba45a60 DM |
87 | */ |
88 | .align 6 | |
89 | .globl add_pixels_clamped_mvi_asm | |
90 | .ent add_pixels_clamped_mvi_asm | |
91 | add_pixels_clamped_mvi_asm: | |
92 | .frame sp, 0, ra | |
93 | .prologue 0 | |
94 | ||
95 | lda t1, -1 | |
96 | lda th, 8 | |
97 | zap t1, 0x33, tg | |
98 | nop | |
99 | ||
100 | srl tg, 1, t0 | |
101 | xor tg, t0, tg # 0x8000800080008000 | |
102 | zap t1, 0xaa, tf # 0x00ff00ff00ff00ff | |
103 | ||
104 | .align 4 | |
105 | 1: ldl t1, 0(a1) # pix0 (try to hit cache line soon) | |
106 | ldl t4, 4(a1) # pix1 | |
107 | addq a1, a2, te # pixels += line_size | |
108 | ldq t0, 0(a0) # shorts0 | |
109 | ||
110 | ldl t7, 0(te) # pix2 (try to hit cache line soon) | |
111 | ldl ta, 4(te) # pix3 | |
112 | ldq t3, 8(a0) # shorts1 | |
113 | ldq t6, 16(a0) # shorts2 | |
114 | ||
115 | ldq t9, 24(a0) # shorts3 | |
116 | unpkbw t1, t1 # 0 0 (quarter/op no.) | |
117 | and t0, tg, t2 # 0 1 | |
118 | unpkbw t4, t4 # 1 0 | |
119 | ||
120 | bic t0, tg, t0 # 0 2 | |
121 | unpkbw t7, t7 # 2 0 | |
122 | and t3, tg, t5 # 1 1 | |
123 | addq t0, t1, t0 # 0 3 | |
124 | ||
125 | xor t0, t2, t0 # 0 4 | |
126 | unpkbw ta, ta # 3 0 | |
127 | and t6, tg, t8 # 2 1 | |
128 | maxsw4 t0, zero, t0 # 0 5 | |
129 | ||
130 | bic t3, tg, t3 # 1 2 | |
131 | bic t6, tg, t6 # 2 2 | |
132 | minsw4 t0, tf, t0 # 0 6 | |
133 | addq t3, t4, t3 # 1 3 | |
134 | ||
135 | pkwb t0, t0 # 0 7 | |
136 | xor t3, t5, t3 # 1 4 | |
137 | maxsw4 t3, zero, t3 # 1 5 | |
138 | addq t6, t7, t6 # 2 3 | |
139 | ||
140 | xor t6, t8, t6 # 2 4 | |
141 | and t9, tg, tb # 3 1 | |
142 | minsw4 t3, tf, t3 # 1 6 | |
143 | bic t9, tg, t9 # 3 2 | |
144 | ||
145 | maxsw4 t6, zero, t6 # 2 5 | |
146 | addq t9, ta, t9 # 3 3 | |
147 | stl t0, 0(a1) # 0 8 | |
148 | minsw4 t6, tf, t6 # 2 6 | |
149 | ||
150 | xor t9, tb, t9 # 3 4 | |
151 | maxsw4 t9, zero, t9 # 3 5 | |
152 | lda a0, 32(a0) # block += 16; | |
153 | pkwb t3, t3 # 1 7 | |
154 | ||
155 | minsw4 t9, tf, t9 # 3 6 | |
156 | subq th, 2, th | |
157 | pkwb t6, t6 # 2 7 | |
158 | pkwb t9, t9 # 3 7 | |
159 | ||
160 | stl t3, 4(a1) # 1 8 | |
161 | addq te, a2, a1 # pixels += line_size | |
162 | stl t6, 0(te) # 2 8 | |
163 | stl t9, 4(te) # 3 8 | |
164 | ||
165 | bne th, 1b | |
166 | ret | |
167 | .end add_pixels_clamped_mvi_asm |