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libavcodec/alpha/asm.h

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00001 /*
00002  * Alpha optimized DSP utils
00003  * Copyright (c) 2002 Falk Hueffner <falk@debian.org>
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #ifndef AVCODEC_ALPHA_ASM_H
00023 #define AVCODEC_ALPHA_ASM_H
00024 
00025 #include <inttypes.h>
00026 
00027 #include "libavutil/common.h"
00028 
00029 #if AV_GCC_VERSION_AT_LEAST(2,96)
00030 # define likely(x)      __builtin_expect((x) != 0, 1)
00031 # define unlikely(x)    __builtin_expect((x) != 0, 0)
00032 #else
00033 # define likely(x)      (x)
00034 # define unlikely(x)    (x)
00035 #endif
00036 
00037 #define AMASK_BWX (1 << 0)
00038 #define AMASK_FIX (1 << 1)
00039 #define AMASK_CIX (1 << 2)
00040 #define AMASK_MVI (1 << 8)
00041 
00042 static inline uint64_t BYTE_VEC(uint64_t x)
00043 {
00044     x |= x <<  8;
00045     x |= x << 16;
00046     x |= x << 32;
00047     return x;
00048 }
00049 static inline uint64_t WORD_VEC(uint64_t x)
00050 {
00051     x |= x << 16;
00052     x |= x << 32;
00053     return x;
00054 }
00055 
00056 #define sextw(x) ((int16_t) (x))
00057 
00058 #ifdef __GNUC__
00059 #define ldq(p)                                                  \
00060     (((const union {                                            \
00061         uint64_t __l;                                           \
00062         __typeof__(*(p)) __s[sizeof (uint64_t) / sizeof *(p)];  \
00063     } *) (p))->__l)
00064 #define ldl(p)                                                  \
00065     (((const union {                                            \
00066         int32_t __l;                                            \
00067         __typeof__(*(p)) __s[sizeof (int32_t) / sizeof *(p)];   \
00068     } *) (p))->__l)
00069 #define stq(l, p)                                                       \
00070     do {                                                                \
00071         (((union {                                                      \
00072             uint64_t __l;                                               \
00073             __typeof__(*(p)) __s[sizeof (uint64_t) / sizeof *(p)];      \
00074         } *) (p))->__l) = l;                                            \
00075     } while (0)
00076 #define stl(l, p)                                                       \
00077     do {                                                                \
00078         (((union {                                                      \
00079             int32_t __l;                                                \
00080             __typeof__(*(p)) __s[sizeof (int32_t) / sizeof *(p)];       \
00081         } *) (p))->__l) = l;                                            \
00082     } while (0)
00083 struct unaligned_long { uint64_t l; } __attribute__((packed));
00084 #define ldq_u(p)        (*(const uint64_t *) (((uint64_t) (p)) & ~7ul))
00085 #define uldq(a)         (((const struct unaligned_long *) (a))->l)
00086 
00087 #if AV_GCC_VERSION_AT_LEAST(3,3)
00088 #define prefetch(p)     __builtin_prefetch((p), 0, 1)
00089 #define prefetch_en(p)  __builtin_prefetch((p), 0, 0)
00090 #define prefetch_m(p)   __builtin_prefetch((p), 1, 1)
00091 #define prefetch_men(p) __builtin_prefetch((p), 1, 0)
00092 #define cmpbge          __builtin_alpha_cmpbge
00093 /* Avoid warnings.  */
00094 #define extql(a, b)     __builtin_alpha_extql(a, (uint64_t) (b))
00095 #define extwl(a, b)     __builtin_alpha_extwl(a, (uint64_t) (b))
00096 #define extqh(a, b)     __builtin_alpha_extqh(a, (uint64_t) (b))
00097 #define zap             __builtin_alpha_zap
00098 #define zapnot          __builtin_alpha_zapnot
00099 #define amask           __builtin_alpha_amask
00100 #define implver         __builtin_alpha_implver
00101 #define rpcc            __builtin_alpha_rpcc
00102 #else
00103 #define prefetch(p)     __asm__ volatile("ldl $31,%0"  : : "m"(*(const char *) (p)) : "memory")
00104 #define prefetch_en(p)  __asm__ volatile("ldq $31,%0"  : : "m"(*(const char *) (p)) : "memory")
00105 #define prefetch_m(p)   __asm__ volatile("lds $f31,%0" : : "m"(*(const char *) (p)) : "memory")
00106 #define prefetch_men(p) __asm__ volatile("ldt $f31,%0" : : "m"(*(const char *) (p)) : "memory")
00107 #define cmpbge(a, b) ({ uint64_t __r; __asm__ ("cmpbge  %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
00108 #define extql(a, b)  ({ uint64_t __r; __asm__ ("extql   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
00109 #define extwl(a, b)  ({ uint64_t __r; __asm__ ("extwl   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
00110 #define extqh(a, b)  ({ uint64_t __r; __asm__ ("extqh   %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
00111 #define zap(a, b)    ({ uint64_t __r; __asm__ ("zap     %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
00112 #define zapnot(a, b) ({ uint64_t __r; __asm__ ("zapnot  %r1,%2,%0"  : "=r" (__r) : "rJ"  (a), "rI" (b)); __r; })
00113 #define amask(a)     ({ uint64_t __r; __asm__ ("amask   %1,%0"      : "=r" (__r) : "rI"  (a));           __r; })
00114 #define implver()    ({ uint64_t __r; __asm__ ("implver %0"         : "=r" (__r));                       __r; })
00115 #define rpcc()       ({ uint64_t __r; __asm__ volatile ("rpcc %0"   : "=r" (__r));                       __r; })
00116 #endif
00117 #define wh64(p) __asm__ volatile("wh64 (%0)" : : "r"(p) : "memory")
00118 
00119 #if AV_GCC_VERSION_AT_LEAST(3,3) && defined(__alpha_max__)
00120 #define minub8  __builtin_alpha_minub8
00121 #define minsb8  __builtin_alpha_minsb8
00122 #define minuw4  __builtin_alpha_minuw4
00123 #define minsw4  __builtin_alpha_minsw4
00124 #define maxub8  __builtin_alpha_maxub8
00125 #define maxsb8  __builtin_alpha_maxsb8
00126 #define maxuw4  __builtin_alpha_maxuw4
00127 #define maxsw4  __builtin_alpha_maxsw4
00128 #define perr    __builtin_alpha_perr
00129 #define pklb    __builtin_alpha_pklb
00130 #define pkwb    __builtin_alpha_pkwb
00131 #define unpkbl  __builtin_alpha_unpkbl
00132 #define unpkbw  __builtin_alpha_unpkbw
00133 #else
00134 #define minub8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minub8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
00135 #define minsb8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minsb8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
00136 #define minuw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minuw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
00137 #define minsw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; minsw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
00138 #define maxub8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxub8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
00139 #define maxsb8(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxsb8  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
00140 #define maxuw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxuw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
00141 #define maxsw4(a, b) ({ uint64_t __r; __asm__ (".arch ev6; maxsw4  %r1,%2,%0"  : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
00142 #define perr(a, b)   ({ uint64_t __r; __asm__ (".arch ev6; perr    %r1,%r2,%0" : "=r" (__r) : "%rJ" (a), "rJ" (b)); __r; })
00143 #define pklb(a)      ({ uint64_t __r; __asm__ (".arch ev6; pklb    %r1,%0"     : "=r" (__r) : "rJ"  (a));           __r; })
00144 #define pkwb(a)      ({ uint64_t __r; __asm__ (".arch ev6; pkwb    %r1,%0"     : "=r" (__r) : "rJ"  (a));           __r; })
00145 #define unpkbl(a)    ({ uint64_t __r; __asm__ (".arch ev6; unpkbl  %r1,%0"     : "=r" (__r) : "rJ"  (a));           __r; })
00146 #define unpkbw(a)    ({ uint64_t __r; __asm__ (".arch ev6; unpkbw  %r1,%0"     : "=r" (__r) : "rJ"  (a));           __r; })
00147 #endif
00148 
00149 #elif defined(__DECC)           /* Digital/Compaq/hp "ccc" compiler */
00150 
00151 #include <c_asm.h>
00152 #define ldq(p) (*(const uint64_t *) (p))
00153 #define ldl(p) (*(const int32_t *)  (p))
00154 #define stq(l, p) do { *(uint64_t *) (p) = (l); } while (0)
00155 #define stl(l, p) do { *(int32_t *)  (p) = (l); } while (0)
00156 #define ldq_u(a)     asm ("ldq_u   %v0,0(%a0)", a)
00157 #define uldq(a)      (*(const __unaligned uint64_t *) (a))
00158 #define cmpbge(a, b) asm ("cmpbge  %a0,%a1,%v0", a, b)
00159 #define extql(a, b)  asm ("extql   %a0,%a1,%v0", a, b)
00160 #define extwl(a, b)  asm ("extwl   %a0,%a1,%v0", a, b)
00161 #define extqh(a, b)  asm ("extqh   %a0,%a1,%v0", a, b)
00162 #define zap(a, b)    asm ("zap     %a0,%a1,%v0", a, b)
00163 #define zapnot(a, b) asm ("zapnot  %a0,%a1,%v0", a, b)
00164 #define amask(a)     asm ("amask   %a0,%v0", a)
00165 #define implver()    asm ("implver %v0")
00166 #define rpcc()       asm ("rpcc           %v0")
00167 #define minub8(a, b) asm ("minub8  %a0,%a1,%v0", a, b)
00168 #define minsb8(a, b) asm ("minsb8  %a0,%a1,%v0", a, b)
00169 #define minuw4(a, b) asm ("minuw4  %a0,%a1,%v0", a, b)
00170 #define minsw4(a, b) asm ("minsw4  %a0,%a1,%v0", a, b)
00171 #define maxub8(a, b) asm ("maxub8  %a0,%a1,%v0", a, b)
00172 #define maxsb8(a, b) asm ("maxsb8  %a0,%a1,%v0", a, b)
00173 #define maxuw4(a, b) asm ("maxuw4  %a0,%a1,%v0", a, b)
00174 #define maxsw4(a, b) asm ("maxsw4  %a0,%a1,%v0", a, b)
00175 #define perr(a, b)   asm ("perr    %a0,%a1,%v0", a, b)
00176 #define pklb(a)      asm ("pklb    %a0,%v0", a)
00177 #define pkwb(a)      asm ("pkwb    %a0,%v0", a)
00178 #define unpkbl(a)    asm ("unpkbl  %a0,%v0", a)
00179 #define unpkbw(a)    asm ("unpkbw  %a0,%v0", a)
00180 #define wh64(a)      asm ("wh64    %a0", a)
00181 
00182 #else
00183 #error "Unknown compiler!"
00184 #endif
00185 
00186 #endif /* AVCODEC_ALPHA_ASM_H */

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