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https://github.com/FFmpeg/FFmpeg.git
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142 lines
3.1 KiB
C
142 lines
3.1 KiB
C
/*
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* Alpha optimized DSP utils
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* Copyright (c) 2002 Falk Hueffner <falk@debian.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef LIBAVCODEC_ALPHA_ASM_H
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#define LIBAVCODEC_ALPHA_ASM_H
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#include <stdint.h>
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#define AMASK_BWX (1 << 0)
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#define AMASK_FIX (1 << 1)
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#define AMASK_MVI (1 << 8)
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static inline uint64_t BYTE_VEC(uint64_t x)
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{
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x |= x << 8;
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x |= x << 16;
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x |= x << 32;
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return x;
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}
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static inline uint64_t WORD_VEC(uint64_t x)
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{
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x |= x << 16;
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x |= x << 32;
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return x;
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}
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static inline int32_t ldl(const void* p)
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{
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return *(const int32_t*) p;
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}
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static inline uint64_t ldq(const void* p)
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{
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return *(const uint64_t*) p;
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}
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/* FIXME ccc doesn't seem to get it? Use inline asm? */
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static inline uint64_t ldq_u(const void* p)
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{
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return *(const uint64_t*) ((uintptr_t) p & ~7ul);
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}
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static inline void stl(uint32_t l, void* p)
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{
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*(uint32_t*) p = l;
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}
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static inline void stq(uint64_t l, void* p)
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{
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*(uint64_t*) p = l;
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}
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#ifdef __GNUC__
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#define OPCODE1(name) \
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static inline uint64_t name(uint64_t l) \
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{ \
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uint64_t r; \
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asm (#name " %1, %0" : "=r" (r) : "r" (l)); \
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return r; \
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}
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#define OPCODE2(name) \
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static inline uint64_t name(uint64_t l1, uint64_t l2) \
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{ \
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uint64_t r; \
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asm (#name " %1, %2, %0" : "=r" (r) : "r" (l1), "rI" (l2)); \
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return r; \
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}
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/* We don't want gcc to move this around or combine it with another
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rpcc, so mark it volatile. */
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static inline uint64_t rpcc(void)
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{
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uint64_t r;
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asm volatile ("rpcc %0" : "=r" (r));
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return r;
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}
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static inline uint64_t uldq(const void* v)
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{
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struct foo {
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unsigned long l;
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} __attribute__((packed));
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return ((const struct foo*) v)->l;
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}
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#elif defined(__DECC) /* Compaq "ccc" compiler */
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#include <c_asm.h>
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#define OPCODE1(name) \
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static inline uint64_t name(uint64_t l) \
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{ \
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return asm (#name " %a0, %v0", l); \
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}
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#define OPCODE2(name) \
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static inline uint64_t name(uint64_t l1, uint64_t l2) \
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{ \
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return asm (#name " %a0, %a1, %v0", l1, l2); \
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}
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static inline uint64_t rpcc(void)
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{
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return asm ("rpcc %v0");
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}
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static inline uint64_t uldq(const void* v)
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{
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return *(const __unaligned uint64_t *) v;
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}
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#endif
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OPCODE1(amask);
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OPCODE1(unpkbw);
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OPCODE1(pkwb);
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OPCODE2(extql);
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OPCODE2(extqh);
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OPCODE2(zap);
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OPCODE2(cmpbge);
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OPCODE2(minsw4);
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OPCODE2(minuw4);
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OPCODE2(minub8);
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OPCODE2(maxsw4);
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OPCODE2(maxuw4);
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OPCODE2(perr);
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#endif /* LIBAVCODEC_ALPHA_ASM_H */
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