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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 */
  187.