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mpv/libmpeg2/alpha_asm.h

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/*
* Alpha assembly macros
* Copyright (c) 2002 Falk Hueffner <falk@debian.org>
*
* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
* See http://libmpeg2.sourceforge.net/ for updates.
*
* mpeg2dec is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpeg2dec is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef ALPHA_ASM_H
#define ALPHA_ASM_H
#include <inttypes.h>
#if defined __GNUC__
# define GNUC_PREREQ(maj, min) \
((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
#else
# define GNUC_PREREQ(maj, min) 0
#endif
#define AMASK_BWX (1 << 0)
#define AMASK_FIX (1 << 1)
#define AMASK_CIX (1 << 2)
#define AMASK_MVI (1 << 8)
#ifdef __alpha_bwx__
# define HAVE_BWX() 1
#else
# define HAVE_BWX() (amask(AMASK_BWX) == 0)
#endif
#ifdef __alpha_fix__
# define HAVE_FIX() 1
#else
# define HAVE_FIX() (amask(AMASK_FIX) == 0)
#endif
#ifdef __alpha_max__
# define HAVE_MVI() 1
#else
# define HAVE_MVI() (amask(AMASK_MVI) == 0)
#endif
#ifdef __alpha_cix__
# define HAVE_CIX() 1
#else
# define HAVE_CIX() (amask(AMASK_CIX) == 0)
#endif
inline static uint64_t BYTE_VEC(uint64_t x)
{
x |= x << 8;
x |= x << 16;
x |= x << 32;
return x;
}
inline static uint64_t WORD_VEC(uint64_t x)
{
x |= x << 16;
x |= x << 32;
return x;
}
#define ldq(p) (*(const uint64_t *) (p))
#define ldl(p) (*(const int32_t *) (p))
#define stl(l, p) do { *(uint32_t *) (p) = (l); } while (0)
#define stq(l, p) do { *(uint64_t *) (p) = (l); } while (0)
#define sextw(x) ((int16_t) (x))
#ifdef __GNUC__
struct unaligned_long { uint64_t l; } __attribute__((packed));
#define ldq_u(p) (*(const uint64_t *) (((uint64_t) (p)) & ~7ul))
#define uldq(a) (((const struct unaligned_long *) (a))->l)
#if GNUC_PREREQ(3,0)
/* Unfortunately, __builtin_prefetch is slightly buggy on Alpha. The
defines here are kludged so we still get the right
instruction. This needs to be adapted as soon as gcc is fixed. */
# define prefetch(p) __builtin_prefetch((p), 0, 1)
# define prefetch_en(p) __builtin_prefetch((p), 1, 1)
# define prefetch_m(p) __builtin_prefetch((p), 0, 0)
# define prefetch_men(p) __builtin_prefetch((p), 1, 0)
#else
# define prefetch(p) asm volatile("ldl $31,%0" : : "m"(*(const char *) (p)) : "memory")
# define prefetch_en(p) asm volatile("ldq $31,%0" : : "m"(*(const char *) (p)) : "memory")
# define prefetch_m(p) asm volatile("lds $f31,%0" : : "m"(*(const char *) (p)) : "memory")
# define prefetch_men(p) asm volatile("ldt $f31,%0" : : "m"(*(const char *) (p)) : "memory")
#endif
#if GNUC_PREREQ(3,3)
#define cmpbge __builtin_alpha_cmpbge
/* Avoid warnings. */
#define extql(a, b) __builtin_alpha_extql(a, (uint64_t) (b))
#define extwl(a, b) __builtin_alpha_extwl(a, (uint64_t) (b))
#define extqh(a, b) __builtin_alpha_extqh(a, (uint64_t) (b))
#define zap __builtin_alpha_zap
#define zapnot __builtin_alpha_zapnot
#define amask __builtin_alpha_amask
#define implver __builtin_alpha_implver
#define rpcc __builtin_alpha_rpcc
#define minub8 __builtin_alpha_minub8
#define minsb8 __builtin_alpha_minsb8
#define minuw4 __builtin_alpha_minuw4
#define minsw4 __builtin_alpha_minsw4
#define maxub8 __builtin_alpha_maxub8
#define maxsb8 __builtin_alpha_maxsb8
#define maxuw4 __builtin_alpha_maxuw4
#define maxsw4 __builtin_alpha_maxsw4
#define perr __builtin_alpha_perr
#define pklb __builtin_alpha_pklb
#define pkwb __builtin_alpha_pkwb
#define unpkbl __builtin_alpha_unpkbl
#define unpkbw __builtin_alpha_unpkbw
#else
#define cmpbge(a, b) ({ uint64_t __r; asm ("cmpbge %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
#define extql(a, b) ({ uint64_t __r; asm ("extql %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
#define extwl(a, b) ({ uint64_t __r; asm ("extwl %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
#define extqh(a, b) ({ uint64_t __r; asm ("extqh %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
#define zap(a, b) ({ uint64_t __r; asm ("zap %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
#define zapnot(a, b) ({ uint64_t __r; asm ("zapnot %r1,%2,%0" : "=r" (__r) : "rJ" (a), "rI" (b)); __r; })
#define amask(a) ({ uint64_t __r; asm ("amask %1,%0" : "=r" (__r) : "rI" (a)); __r; })
#define implver() ({ uint64_t __r; asm ("implver %0" : "=r" (__r)); __r; })
#define rpcc() ({ uint64_t __r; asm volatile ("rpcc %0" : "=r" (__r)); __r; })
#define minub8(a, b) ({ uint64_t __r; asm ("minub8 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
#define minsb8(a, b) ({ uint64_t __r; asm ("minsb8 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
#define minuw4(a, b) ({ uint64_t __r; asm ("minuw4 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
#define minsw4(a, b) ({ uint64_t __r; asm ("minsw4 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
#define maxub8(a, b) ({ uint64_t __r; asm ("maxub8 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
#define maxsb8(a, b) ({ uint64_t __r; asm ("maxsb8 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
#define maxuw4(a, b) ({ uint64_t __r; asm ("maxuw4 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
#define maxsw4(a, b) ({ uint64_t __r; asm ("maxsw4 %r1,%2,%0" : "=r" (__r) : "%rJ" (a), "rI" (b)); __r; })
#define perr(a, b) ({ uint64_t __r; asm ("perr %r1,%r2,%0" : "=r" (__r) : "%rJ" (a), "rJ" (b)); __r; })
#define pklb(a) ({ uint64_t __r; asm ("pklb %r1,%0" : "=r" (__r) : "rJ" (a)); __r; })
#define pkwb(a) ({ uint64_t __r; asm ("pkwb %r1,%0" : "=r" (__r) : "rJ" (a)); __r; })
#define unpkbl(a) ({ uint64_t __r; asm ("unpkbl %r1,%0" : "=r" (__r) : "rJ" (a)); __r; })
#define unpkbw(a) ({ uint64_t __r; asm ("unpkbw %r1,%0" : "=r" (__r) : "rJ" (a)); __r; })
#endif
#define wh64(p) asm volatile("wh64 (%0)" : : "r"(p) : "memory")
#elif defined(__DECC) /* Digital/Compaq/hp "ccc" compiler */
#include <c_asm.h>
#define ldq_u(a) asm ("ldq_u %v0,0(%a0)", a)
#define uldq(a) (*(const __unaligned uint64_t *) (a))
#define cmpbge(a, b) asm ("cmpbge %a0,%a1,%v0", a, b)
#define extql(a, b) asm ("extql %a0,%a1,%v0", a, b)
#define extwl(a, b) asm ("extwl %a0,%a1,%v0", a, b)
#define extqh(a, b) asm ("extqh %a0,%a1,%v0", a, b)
#define zap(a, b) asm ("zap %a0,%a1,%v0", a, b)
#define zapnot(a, b) asm ("zapnot %a0,%a1,%v0", a, b)
#define amask(a) asm ("amask %a0,%v0", a)
#define implver() asm ("implver %v0")
#define rpcc() asm ("rpcc %v0")
#define minub8(a, b) asm ("minub8 %a0,%a1,%v0", a, b)
#define minsb8(a, b) asm ("minsb8 %a0,%a1,%v0", a, b)
#define minuw4(a, b) asm ("minuw4 %a0,%a1,%v0", a, b)
#define minsw4(a, b) asm ("minsw4 %a0,%a1,%v0", a, b)
#define maxub8(a, b) asm ("maxub8 %a0,%a1,%v0", a, b)
#define maxsb8(a, b) asm ("maxsb8 %a0,%a1,%v0", a, b)
#define maxuw4(a, b) asm ("maxuw4 %a0,%a1,%v0", a, b)
#define maxsw4(a, b) asm ("maxsw4 %a0,%a1,%v0", a, b)
#define perr(a, b) asm ("perr %a0,%a1,%v0", a, b)
#define pklb(a) asm ("pklb %a0,%v0", a)
#define pkwb(a) asm ("pkwb %a0,%v0", a)
#define unpkbl(a) asm ("unpkbl %a0,%v0", a)
#define unpkbw(a) asm ("unpkbw %a0,%v0", a)
#define wh64(a) asm ("wh64 %a0", a)
#else
#error "Unknown compiler!"
#endif
#endif /* ALPHA_ASM_H */
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