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FFmpeg/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 library is free software; you can redistribute it and/or

  6.  * modify it under the terms of the GNU Lesser General Public

  7.  * License as published by the Free Software Foundation; either

  8.  * version 2 of the License, or (at your option) any later version.

  9.  *

  10.  * This library is distributed in the hope that it will be useful,

  11.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  12.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  13.  * Lesser General Public License for more details.

  14.  *

  15.  * You should have received a copy of the GNU Lesser General Public

  16.  * License along with this library; if not, write to the Free Software

  17.  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

  18.  */

  19. 

  20. #ifndef LIBAVCODEC_ALPHA_ASM_H

  21. #define LIBAVCODEC_ALPHA_ASM_H

  22. 

  23. #include <inttypes.h>

  24. 

  25. #if defined __GNUC__

  26. # define GNUC_PREREQ(maj, min) \

  27.         ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))

  28. #else

  29. # define GNUC_PREREQ(maj, min) 0

  30. #endif

  31. 

  32. #if GNUC_PREREQ(2,96)

  33. # define likely(x)      __builtin_expect((x) != 0, 1)

  34. # define unlikely(x)    __builtin_expect((x) != 0, 0)

  35. #else

  36. # define likely(x)      (x)

  37. # define unlikely(x)    (x)

  38. #endif

  39. 

  40. #define AMASK_BWX (1 << 0)

  41. #define AMASK_FIX (1 << 1)

  42. #define AMASK_CIX (1 << 2)

  43. #define AMASK_MVI (1 << 8)

  44. 

  45. static inline uint64_t BYTE_VEC(uint64_t x)

  46. {

  47.     x |= x <<  8;

  48.     x |= x << 16;

  49.     x |= x << 32;

  50.     return x;

  51. }

  52. static inline uint64_t WORD_VEC(uint64_t x)

  53. {

  54.     x |= x << 16;

  55.     x |= x << 32;

  56.     return x;

  57. }

  58. 

  59. #define ldq(p) (*(const uint64_t *) (p))

  60. #define ldl(p) (*(const int32_t *) (p))

  61. #define stl(l, p) do { *(uint32_t *) (p) = (l); } while (0)

  62. #define stq(l, p) do { *(uint64_t *) (p) = (l); } while (0)

  63. #define sextw(x) ((int16_t) (x))

  64. 

  65. #ifdef __GNUC__

  66. struct unaligned_long { uint64_t l; } __attribute__((packed));

  67. #define ldq_u(p)     (*(const uint64_t *) (((uint64_t) (p)) & ~7ul))

  68. #define uldq(a)	     (((const struct unaligned_long *) (a))->l)

  69. 

  70. #if GNUC_PREREQ(3,3)

  71. #define prefetch(p)     __builtin_prefetch((p), 0, 1)

  72. #define prefetch_en(p)  __builtin_prefetch((p), 0, 0)

  73. #define prefetch_m(p)   __builtin_prefetch((p), 1, 1)

  74. #define prefetch_men(p) __builtin_prefetch((p), 1, 0)

  75. #define cmpbge	__builtin_alpha_cmpbge

  76. /* Avoid warnings.  */

  77. #define extql(a, b)	__builtin_alpha_extql(a, (uint64_t) (b))

  78. #define extwl(a, b)	__builtin_alpha_extwl(a, (uint64_t) (b))

  79. #define extqh(a, b)	__builtin_alpha_extqh(a, (uint64_t) (b))

  80. #define zap	__builtin_alpha_zap

  81. #define zapnot	__builtin_alpha_zapnot

  82. #define amask	__builtin_alpha_amask

  83. #define implver	__builtin_alpha_implver

  84. #define rpcc	__builtin_alpha_rpcc

  85. #else

  86. #define prefetch(p)     asm volatile("ldl $31,%0"  : : "m"(*(const char *) (p)) : "memory")

  87. #define prefetch_en(p)  asm volatile("ldq $31,%0"  : : "m"(*(const char *) (p)) : "memory")

  88. #define prefetch_m(p)   asm volatile("lds $f31,%0" : : "m"(*(const char *) (p)) : "memory")

  89. #define prefetch_men(p) asm volatile("ldt $f31,%0" : : "m"(*(const char *) (p)) : "memory")

  90. #define cmpbge(a, b) ({ uint64_t __r; asm ("cmpbge  %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })

  91. #define extql(a, b)  ({ uint64_t __r; asm ("extql   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })

  92. #define extwl(a, b)  ({ uint64_t __r; asm ("extwl   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })

  93. #define extqh(a, b)  ({ uint64_t __r; asm ("extqh   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })

  94. #define zap(a, b)    ({ uint64_t __r; asm ("zap     %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })

  95. #define zapnot(a, b) ({ uint64_t __r; asm ("zapnot  %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })

  96. #define amask(a)     ({ uint64_t __r; asm ("amask   %1,%0"      : "=r" (__r) : "rI"  (a));	     __r; })

  97. #define implver()    ({ uint64_t __r; asm ("implver %0"         : "=r" (__r));			     __r; })

  98. #define rpcc()	     ({ uint64_t __r; asm volatile ("rpcc %0"   : "=r" (__r));			     __r; })

  99. #endif

  100. #define wh64(p) asm volatile("wh64 (%0)" : : "r"(p) : "memory")

  101. 

  102. #if GNUC_PREREQ(3,3) && defined(__alpha_max__)

  103. #define minub8	__builtin_alpha_minub8

  104. #define minsb8	__builtin_alpha_minsb8

  105. #define minuw4	__builtin_alpha_minuw4

  106. #define minsw4	__builtin_alpha_minsw4

  107. #define maxub8	__builtin_alpha_maxub8

  108. #define maxsb8	__builtin_alpha_maxsb8

  109. #define maxuw4	__builtin_alpha_maxuw4	

  110. #define maxsw4	__builtin_alpha_maxsw4

  111. #define perr	__builtin_alpha_perr

  112. #define pklb	__builtin_alpha_pklb

  113. #define pkwb	__builtin_alpha_pkwb

  114. #define unpkbl	__builtin_alpha_unpkbl

  115. #define unpkbw	__builtin_alpha_unpkbw

  116. #else

  117. #define minub8(a, b) ({ uint64_t __r; asm (".arch ev6; minub8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })

  118. #define minsb8(a, b) ({ uint64_t __r; asm (".arch ev6; minsb8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })

  119. #define minuw4(a, b) ({ uint64_t __r; asm (".arch ev6; minuw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })

  120. #define minsw4(a, b) ({ uint64_t __r; asm (".arch ev6; minsw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })

  121. #define maxub8(a, b) ({ uint64_t __r; asm (".arch ev6; maxub8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })

  122. #define maxsb8(a, b) ({ uint64_t __r; asm (".arch ev6; maxsb8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })

  123. #define maxuw4(a, b) ({ uint64_t __r; asm (".arch ev6; maxuw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })

  124. #define maxsw4(a, b) ({ uint64_t __r; asm (".arch ev6; maxsw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })

  125. #define perr(a, b)   ({ uint64_t __r; asm (".arch ev6; perr    %r1,%r2,%0" : "=r" (__r) : "%rJ" (a), "rJ" (b)); __r; })

  126. #define pklb(a)      ({ uint64_t __r; asm (".arch ev6; pklb    %r1,%0"     : "=r" (__r) : "rJ"  (a));	     __r; })

  127. #define pkwb(a)      ({ uint64_t __r; asm (".arch ev6; pkwb    %r1,%0"     : "=r" (__r) : "rJ"  (a));	     __r; })

  128. #define unpkbl(a)    ({ uint64_t __r; asm (".arch ev6; unpkbl  %r1,%0"     : "=r" (__r) : "rJ"  (a));	     __r; })

  129. #define unpkbw(a)    ({ uint64_t __r; asm (".arch ev6; unpkbw  %r1,%0"     : "=r" (__r) : "rJ"  (a));	     __r; })

  130. #endif

  131. 

  132. #elif defined(__DECC)		/* Digital/Compaq/hp "ccc" compiler */

  133. 

  134. #include <c_asm.h>

  135. #define ldq_u(a)     asm ("ldq_u   %v0,0(%a0)", a)

  136. #define uldq(a)	     (*(const __unaligned uint64_t *) (a))

  137. #define cmpbge(a, b) asm ("cmpbge  %a0,%a1,%v0", a, b)

  138. #define extql(a, b)  asm ("extql   %a0,%a1,%v0", a, b)

  139. #define extwl(a, b)  asm ("extwl   %a0,%a1,%v0", a, b)

  140. #define extqh(a, b)  asm ("extqh   %a0,%a1,%v0", a, b)

  141. #define zap(a, b)    asm ("zap     %a0,%a1,%v0", a, b)

  142. #define zapnot(a, b) asm ("zapnot  %a0,%a1,%v0", a, b)

  143. #define amask(a)     asm ("amask   %a0,%v0", a)

  144. #define implver()    asm ("implver %v0")

  145. #define rpcc()	     asm ("rpcc	   %v0")

  146. #define minub8(a, b) asm ("minub8  %a0,%a1,%v0", a, b)

  147. #define minsb8(a, b) asm ("minsb8  %a0,%a1,%v0", a, b)

  148. #define minuw4(a, b) asm ("minuw4  %a0,%a1,%v0", a, b)

  149. #define minsw4(a, b) asm ("minsw4  %a0,%a1,%v0", a, b)

  150. #define maxub8(a, b) asm ("maxub8  %a0,%a1,%v0", a, b)

  151. #define maxsb8(a, b) asm ("maxsb8  %a0,%a1,%v0", a, b)

  152. #define maxuw4(a, b) asm ("maxuw4  %a0,%a1,%v0", a, b)

  153. #define maxsw4(a, b) asm ("maxsw4  %a0,%a1,%v0", a, b)

  154. #define perr(a, b)   asm ("perr    %a0,%a1,%v0", a, b)

  155. #define pklb(a)      asm ("pklb    %a0,%v0", a)

  156. #define pkwb(a)      asm ("pkwb    %a0,%v0", a)

  157. #define unpkbl(a)    asm ("unpkbl  %a0,%v0", a)

  158. #define unpkbw(a)    asm ("unpkbw  %a0,%v0", a)

  159. #define wh64(a)      asm ("wh64    %a0", a)

  160. 

  161. #else

  162. #error "Unknown compiler!"

  163. #endif

  164. 

  165. #endif /* LIBAVCODEC_ALPHA_ASM_H */