libavcodec/alpha/asm.h
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1 /*
2  * Alpha optimized DSP utils
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 #ifndef AVCODEC_ALPHA_ASM_H
23 #define AVCODEC_ALPHA_ASM_H
24 
25 #include <inttypes.h>
26 
27 #include "libavutil/common.h"
28 
29 #if AV_GCC_VERSION_AT_LEAST(2,96)
30 # define likely(x) __builtin_expect((x) != 0, 1)
31 # define unlikely(x) __builtin_expect((x) != 0, 0)
32 #else
33 # define likely(x) (x)
34 # define unlikely(x) (x)
35 #endif
36 
37 #define AMASK_BWX (1 << 0)
38 #define AMASK_FIX (1 << 1)
39 #define AMASK_CIX (1 << 2)
40 #define AMASK_MVI (1 << 8)
41 
42 static inline uint64_t BYTE_VEC(uint64_t x)
43 {
44  x |= x << 8;
45  x |= x << 16;
46  x |= x << 32;
47  return x;
48 }
49 static inline uint64_t WORD_VEC(uint64_t x)
50 {
51  x |= x << 16;
52  x |= x << 32;
53  return x;
54 }
55 
56 #define sextw(x) ((int16_t) (x))
57 
58 #ifdef __GNUC__
59 #define ldq(p) \
60  (((const union { \
61  uint64_t __l; \
62  __typeof__(*(p)) __s[sizeof (uint64_t) / sizeof *(p)]; \
63  } *) (p))->__l)
64 #define ldl(p) \
65  (((const union { \
66  int32_t __l; \
67  __typeof__(*(p)) __s[sizeof (int32_t) / sizeof *(p)]; \
68  } *) (p))->__l)
69 #define stq(l, p) \
70  do { \
71  (((union { \
72  uint64_t __l; \
73  __typeof__(*(p)) __s[sizeof (uint64_t) / sizeof *(p)]; \
74  } *) (p))->__l) = l; \
75  } while (0)
76 #define stl(l, p) \
77  do { \
78  (((union { \
79  int32_t __l; \
80  __typeof__(*(p)) __s[sizeof (int32_t) / sizeof *(p)]; \
81  } *) (p))->__l) = l; \
82  } while (0)
83 struct unaligned_long { uint64_t l; } __attribute__((packed));
84 #define ldq_u(p) (*(const uint64_t *) (((uint64_t) (p)) & ~7ul))
85 #define uldq(a) (((const struct unaligned_long *) (a))->l)
86 
87 #if AV_GCC_VERSION_AT_LEAST(3,3)
88 #define prefetch(p) __builtin_prefetch((p), 0, 1)
89 #define prefetch_en(p) __builtin_prefetch((p), 0, 0)
90 #define prefetch_m(p) __builtin_prefetch((p), 1, 1)
91 #define prefetch_men(p) __builtin_prefetch((p), 1, 0)
92 #define cmpbge __builtin_alpha_cmpbge
93 /* Avoid warnings. */
94 #define extql(a, b) __builtin_alpha_extql(a, (uint64_t) (b))
95 #define extwl(a, b) __builtin_alpha_extwl(a, (uint64_t) (b))
96 #define extqh(a, b) __builtin_alpha_extqh(a, (uint64_t) (b))
97 #define zap __builtin_alpha_zap
98 #define zapnot __builtin_alpha_zapnot
99 #define amask __builtin_alpha_amask
100 #define implver __builtin_alpha_implver
101 #define rpcc __builtin_alpha_rpcc
102 #else
103 #define prefetch(p) __asm__ volatile("ldl $31,%0" : : "m"(*(const char *) (p)) : "memory")
104 #define prefetch_en(p) __asm__ volatile("ldq $31,%0" : : "m"(*(const char *) (p)) : "memory")
105 #define prefetch_m(p) __asm__ volatile("lds $f31,%0" : : "m"(*(const char *) (p)) : "memory")
106 #define prefetch_men(p) __asm__ volatile("ldt $f31,%0" : : "m"(*(const char *) (p)) : "memory")
107 #define cmpbge(a, b) ({ uint64_t __r; __asm__ ("cmpbge %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
108 #define extql(a, b) ({ uint64_t __r; __asm__ ("extql %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
109 #define extwl(a, b) ({ uint64_t __r; __asm__ ("extwl %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
110 #define extqh(a, b) ({ uint64_t __r; __asm__ ("extqh %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
111 #define zap(a, b) ({ uint64_t __r; __asm__ ("zap %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
112 #define zapnot(a, b) ({ uint64_t __r; __asm__ ("zapnot %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
113 #define amask(a) ({ uint64_t __r; __asm__ ("amask %1,%0" : "=r" (__r) : "rI" (a)); __r; })
114 #define implver() ({ uint64_t __r; __asm__ ("implver %0" : "=r" (__r)); __r; })
115 #define rpcc() ({ uint64_t __r; __asm__ volatile ("rpcc %0" : "=r" (__r)); __r; })
116 #endif
117 #define wh64(p) __asm__ volatile("wh64 (%0)" : : "r"(p) : "memory")
118 
119 #if AV_GCC_VERSION_AT_LEAST(3,3) && defined(__alpha_max__)
120 #define minub8 __builtin_alpha_minub8
121 #define minsb8 __builtin_alpha_minsb8
122 #define minuw4 __builtin_alpha_minuw4
123 #define minsw4 __builtin_alpha_minsw4
124 #define maxub8 __builtin_alpha_maxub8
125 #define maxsb8 __builtin_alpha_maxsb8
126 #define maxuw4 __builtin_alpha_maxuw4
127 #define maxsw4 __builtin_alpha_maxsw4
128 #define perr __builtin_alpha_perr
129 #define pklb __builtin_alpha_pklb
130 #define pkwb __builtin_alpha_pkwb
131 #define unpkbl __builtin_alpha_unpkbl
132 #define unpkbw __builtin_alpha_unpkbw
133 #else
134 #define minub8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minub8 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
135 #define minsb8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minsb8 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
136 #define minuw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minuw4 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
137 #define minsw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minsw4 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
138 #define maxub8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxub8 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
139 #define maxsb8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxsb8 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
140 #define maxuw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxuw4 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
141 #define maxsw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxsw4 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
142 #define perr(a, b) ({ uint64_t __r; __asm__ (".arch ev6; perr %r1,%r2,%0" : "=r" (__r) : "%rJ" (a), "rJ" (b)); __r; })
143 #define pklb(a) ({ uint64_t __r; __asm__ (".arch ev6; pklb %r1,%0" : "=r" (__r) : "rJ" (a)); __r; })
144 #define pkwb(a) ({ uint64_t __r; __asm__ (".arch ev6; pkwb %r1,%0" : "=r" (__r) : "rJ" (a)); __r; })
145 #define unpkbl(a) ({ uint64_t __r; __asm__ (".arch ev6; unpkbl %r1,%0" : "=r" (__r) : "rJ" (a)); __r; })
146 #define unpkbw(a) ({ uint64_t __r; __asm__ (".arch ev6; unpkbw %r1,%0" : "=r" (__r) : "rJ" (a)); __r; })
147 #endif
148 
149 #elif defined(__DECC) /* Digital/Compaq/hp "ccc" compiler */
150 
151 #include <c_asm.h>
152 #define ldq(p) (*(const uint64_t *) (p))
153 #define ldl(p) (*(const int32_t *) (p))
154 #define stq(l, p) do { *(uint64_t *) (p) = (l); } while (0)
155 #define stl(l, p) do { *(int32_t *) (p) = (l); } while (0)
156 #define ldq_u(a) asm ("ldq_u %v0,0(%a0)", a)
157 #define uldq(a) (*(const __unaligned uint64_t *) (a))
158 #define cmpbge(a, b) asm ("cmpbge %a0,%a1,%v0", a, b)
159 #define extql(a, b) asm ("extql %a0,%a1,%v0", a, b)
160 #define extwl(a, b) asm ("extwl %a0,%a1,%v0", a, b)
161 #define extqh(a, b) asm ("extqh %a0,%a1,%v0", a, b)
162 #define zap(a, b) asm ("zap %a0,%a1,%v0", a, b)
163 #define zapnot(a, b) asm ("zapnot %a0,%a1,%v0", a, b)
164 #define amask(a) asm ("amask %a0,%v0", a)
165 #define implver() asm ("implver %v0")
166 #define rpcc() asm ("rpcc %v0")
167 #define minub8(a, b) asm ("minub8 %a0,%a1,%v0", a, b)
168 #define minsb8(a, b) asm ("minsb8 %a0,%a1,%v0", a, b)
169 #define minuw4(a, b) asm ("minuw4 %a0,%a1,%v0", a, b)
170 #define minsw4(a, b) asm ("minsw4 %a0,%a1,%v0", a, b)
171 #define maxub8(a, b) asm ("maxub8 %a0,%a1,%v0", a, b)
172 #define maxsb8(a, b) asm ("maxsb8 %a0,%a1,%v0", a, b)
173 #define maxuw4(a, b) asm ("maxuw4 %a0,%a1,%v0", a, b)
174 #define maxsw4(a, b) asm ("maxsw4 %a0,%a1,%v0", a, b)
175 #define perr(a, b) asm ("perr %a0,%a1,%v0", a, b)
176 #define pklb(a) asm ("pklb %a0,%v0", a)
177 #define pkwb(a) asm ("pkwb %a0,%v0", a)
178 #define unpkbl(a) asm ("unpkbl %a0,%v0", a)
179 #define unpkbw(a) asm ("unpkbw %a0,%v0", a)
180 #define wh64(a) asm ("wh64 %a0", a)
181 
182 #else
183 #error "Unknown compiler!"
184 #endif
185 
186 #endif /* AVCODEC_ALPHA_ASM_H */
__attribute__
static const float even_table[] __attribute__((aligned(8)))
x
Discrete Time axis x
Definition: FFT of a Simple Sinusoid.m:10
common.h
common internal and external API header
WORD_VEC
static uint64_t WORD_VEC(uint64_t x)
Definition: libavcodec/alpha/asm.h:49
BYTE_VEC
static uint64_t BYTE_VEC(uint64_t x)
Definition: libavcodec/alpha/asm.h:42
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