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Diffstat (limited to 'libmpeg2/alpha_asm.h')
| -rw-r--r-- | libmpeg2/alpha_asm.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/libmpeg2/alpha_asm.h b/libmpeg2/alpha_asm.h new file mode 100644 index 0000000000..6864ccc2e7 --- /dev/null +++ b/libmpeg2/alpha_asm.h @@ -0,0 +1,184 @@ +/* + * 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 */ |