libavcodec/alpha/asm.h

   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 #if defined __GNUC__
  28 # define GNUC_PREREQ(maj, min) \
  29         ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
  30 #else
  31 # define GNUC_PREREQ(maj, min) 0
  32 #endif
  33
  34 #if GNUC_PREREQ(2,96)
  35 # define likely(x)      __builtin_expect((x) != 0, 1)
  36 # define unlikely(x)    __builtin_expect((x) != 0, 0)
  37 #else
  38 # define likely(x)      (x)
  39 # define unlikely(x)    (x)
  40 #endif
  41
  42 #define AMASK_BWX (1 << 0)
  43 #define AMASK_FIX (1 << 1)
  44 #define AMASK_CIX (1 << 2)
  45 #define AMASK_MVI (1 << 8)
  46
  47 static inline uint64_t BYTE_VEC(uint64_t x)
  48 {
  49     x |= x <<  8;
  50     x |= x << 16;
  51     x |= x << 32;
  52     return x;
  53 }
  54 static inline uint64_t WORD_VEC(uint64_t x)
  55 {
  56     x |= x << 16;
  57     x |= x << 32;
  58     return x;
  59 }
  60
  61 #define sextw(x) ((int16_t) (x))
  62
  63 #ifdef __GNUC__
  64 #define ldq(p)                                                  \
  65     (((union {                                                  \
  66         uint64_t __l;                                           \
  67         __typeof__(*(p)) __s[sizeof (uint64_t) / sizeof *(p)];  \
  68     } *) (p))->__l)
  69 #define ldl(p)                                                  \
  70     (((union {                                                  \
  71         int32_t __l;                                            \
  72         __typeof__(*(p)) __s[sizeof (int32_t) / sizeof *(p)];   \
  73     } *) (p))->__l)
  74 #define stq(l, p)                                                       \
  75     do {                                                                \
  76         (((union {                                                      \
  77             uint64_t __l;                                               \
  78             __typeof__(*(p)) __s[sizeof (uint64_t) / sizeof *(p)];      \
  79         } *) (p))->__l) = l;                                            \
  80     } while (0)
  81 #define stl(l, p)                                                       \
  82     do {                                                                \
  83         (((union {                                                      \
  84             int32_t __l;                                                \
  85             __typeof__(*(p)) __s[sizeof (int32_t) / sizeof *(p)];       \
  86         } *) (p))->__l) = l;                                            \
  87     } while (0)
  88 struct unaligned_long { uint64_t l; } __attribute__((packed));
  89 #define ldq_u(p)        (*(const uint64_t *) (((uint64_t) (p)) & ~7ul))
  90 #define uldq(a)         (((const struct unaligned_long *) (a))->l)
  91
  92 #if GNUC_PREREQ(3,3)
  93 #define prefetch(p)     __builtin_prefetch((p), 0, 1)
  94 #define prefetch_en(p)  __builtin_prefetch((p), 0, 0)
  95 #define prefetch_m(p)   __builtin_prefetch((p), 1, 1)
  96 #define prefetch_men(p) __builtin_prefetch((p), 1, 0)
  97 #define cmpbge          __builtin_alpha_cmpbge
  98 /* Avoid warnings.  */
  99 #define extql(a, b)     __builtin_alpha_extql(a, (uint64_t) (b))
 100 #define extwl(a, b)     __builtin_alpha_extwl(a, (uint64_t) (b))
 101 #define extqh(a, b)     __builtin_alpha_extqh(a, (uint64_t) (b))
 102 #define zap             __builtin_alpha_zap
 103 #define zapnot          __builtin_alpha_zapnot
 104 #define amask           __builtin_alpha_amask
 105 #define implver         __builtin_alpha_implver
 106 #define rpcc            __builtin_alpha_rpcc
 107 #else
 108 #define prefetch(p)     __asm__ volatile("ldl $31,%0"  : : "m"(*(const char *) (p)) : "memory")
 109 #define prefetch_en(p)  __asm__ volatile("ldq $31,%0"  : : "m"(*(const char *) (p)) : "memory")
 110 #define prefetch_m(p)   __asm__ volatile("lds $f31,%0" : : "m"(*(const char *) (p)) : "memory")
 111 #define prefetch_men(p) __asm__ volatile("ldt $f31,%0" : : "m"(*(const char *) (p)) : "memory")
 112 #define cmpbge(a, b) ({ uint64_t __r; __asm__ ("cmpbge  %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
 113 #define extql(a, b)  ({ uint64_t __r; __asm__ ("extql   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
 114 #define extwl(a, b)  ({ uint64_t __r; __asm__ ("extwl   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
 115 #define extqh(a, b)  ({ uint64_t __r; __asm__ ("extqh   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
 116 #define zap(a, b)    ({ uint64_t __r; __asm__ ("zap     %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
 117 #define zapnot(a, b) ({ uint64_t __r; __asm__ ("zapnot  %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
 118 #define amask(a)     ({ uint64_t __r; __asm__ ("amask   %1,%0"      : "=r" (__r) : "rI"  (a));           __r; })
 119 #define implver()    ({ uint64_t __r; __asm__ ("implver %0"         : "=r" (__r));                       __r; })
 120 #define rpcc()       ({ uint64_t __r; __asm__ volatile ("rpcc %0"   : "=r" (__r));                       __r; })
 121 #endif
 122 #define wh64(p) __asm__ volatile("wh64 (%0)" : : "r"(p) : "memory")
 123
 124 #if GNUC_PREREQ(3,3) && defined(__alpha_max__)
 125 #define minub8  __builtin_alpha_minub8
 126 #define minsb8  __builtin_alpha_minsb8
 127 #define minuw4  __builtin_alpha_minuw4
 128 #define minsw4  __builtin_alpha_minsw4
 129 #define maxub8  __builtin_alpha_maxub8
 130 #define maxsb8  __builtin_alpha_maxsb8
 131 #define maxuw4  __builtin_alpha_maxuw4
 132 #define maxsw4  __builtin_alpha_maxsw4
 133 #define perr    __builtin_alpha_perr
 134 #define pklb    __builtin_alpha_pklb
 135 #define pkwb    __builtin_alpha_pkwb
 136 #define unpkbl  __builtin_alpha_unpkbl
 137 #define unpkbw  __builtin_alpha_unpkbw
 138 #else
 139 #define minub8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minub8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
 140 #define minsb8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minsb8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
 141 #define minuw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minuw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
 142 #define minsw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minsw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
 143 #define maxub8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxub8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
 144 #define maxsb8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxsb8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
 145 #define maxuw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxuw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
 146 #define maxsw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxsw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
 147 #define perr(a, b)   ({ uint64_t __r; __asm__ (".arch ev6; perr    %r1,%r2,%0" : "=r" (__r) : "%rJ" (a), "rJ" (b)); __r; })
 148 #define pklb(a)      ({ uint64_t __r; __asm__ (".arch ev6; pklb    %r1,%0"     : "=r" (__r) : "rJ"  (a));           __r; })
 149 #define pkwb(a)      ({ uint64_t __r; __asm__ (".arch ev6; pkwb    %r1,%0"     : "=r" (__r) : "rJ"  (a));           __r; })
 150 #define unpkbl(a)    ({ uint64_t __r; __asm__ (".arch ev6; unpkbl  %r1,%0"     : "=r" (__r) : "rJ"  (a));           __r; })
 151 #define unpkbw(a)    ({ uint64_t __r; __asm__ (".arch ev6; unpkbw  %r1,%0"     : "=r" (__r) : "rJ"  (a));           __r; })
 152 #endif
 153
 154 #elif defined(__DECC)           /* Digital/Compaq/hp "ccc" compiler */
 155
 156 #include <c_asm.h>
 157 #define ldq(p) (*(const uint64_t *) (p))
 158 #define ldl(p) (*(const int32_t *)  (p))
 159 #define stq(l, p) do { *(uint64_t *) (p) = (l); } while (0)
 160 #define stl(l, p) do { *(int32_t *)  (p) = (l); } while (0)
 161 #define ldq_u(a)     __asm__ ("ldq_u   %v0,0(%a0)", a)
 162 #define uldq(a)      (*(const __unaligned uint64_t *) (a))
 163 #define cmpbge(a, b) __asm__ ("cmpbge  %a0,%a1,%v0", a, b)
 164 #define extql(a, b)  __asm__ ("extql   %a0,%a1,%v0", a, b)
 165 #define extwl(a, b)  __asm__ ("extwl   %a0,%a1,%v0", a, b)
 166 #define extqh(a, b)  __asm__ ("extqh   %a0,%a1,%v0", a, b)
 167 #define zap(a, b)    __asm__ ("zap     %a0,%a1,%v0", a, b)
 168 #define zapnot(a, b) __asm__ ("zapnot  %a0,%a1,%v0", a, b)
 169 #define amask(a)     __asm__ ("amask   %a0,%v0", a)
 170 #define implver()    __asm__ ("implver %v0")
 171 #define rpcc()       __asm__ ("rpcc           %v0")
 172 #define minub8(a, b) __asm__ ("minub8  %a0,%a1,%v0", a, b)
 173 #define minsb8(a, b) __asm__ ("minsb8  %a0,%a1,%v0", a, b)
 174 #define minuw4(a, b) __asm__ ("minuw4  %a0,%a1,%v0", a, b)
 175 #define minsw4(a, b) __asm__ ("minsw4  %a0,%a1,%v0", a, b)
 176 #define maxub8(a, b) __asm__ ("maxub8  %a0,%a1,%v0", a, b)
 177 #define maxsb8(a, b) __asm__ ("maxsb8  %a0,%a1,%v0", a, b)
 178 #define maxuw4(a, b) __asm__ ("maxuw4  %a0,%a1,%v0", a, b)
 179 #define maxsw4(a, b) __asm__ ("maxsw4  %a0,%a1,%v0", a, b)
 180 #define perr(a, b)   __asm__ ("perr    %a0,%a1,%v0", a, b)
 181 #define pklb(a)      __asm__ ("pklb    %a0,%v0", a)
 182 #define pkwb(a)      __asm__ ("pkwb    %a0,%v0", a)
 183 #define unpkbl(a)    __asm__ ("unpkbl  %a0,%v0", a)
 184 #define unpkbw(a)    __asm__ ("unpkbw  %a0,%v0", a)
 185 #define wh64(a)      __asm__ ("wh64    %a0", a)
 186
 187 #else
 188 #error "Unknown compiler!"
 189 #endif
 190
 191 #endif /* AVCODEC_ALPHA_ASM_H */