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videolan
vlc
Commits
b1e7c0eb
Commit
b1e7c0eb
authored
Nov 26, 2011
by
Rémi Denis-Courmont
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Plain Diff
MMX memcpy: set clobber list
parent
878d5212
Changes
1
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1 changed file
with
13 additions
and
5 deletions
+13
-5
modules/mmx/fastmemcpy.h
modules/mmx/fastmemcpy.h
+13
-5
No files found.
modules/mmx/fastmemcpy.h
View file @
b1e7c0eb
...
...
@@ -153,6 +153,11 @@ __asm__ __volatile__(\
#define MIN_LEN 0x40
/* 64-byte blocks */
#endif
#ifdef HAVE_SSE
VLC_SSE
#else
VLC_MMX
#endif
static
void
*
fast_memcpy
(
void
*
to
,
const
void
*
from
,
size_t
len
)
{
void
*
retval
;
...
...
@@ -218,7 +223,7 @@ static void * fast_memcpy(void * to, const void * from, size_t len)
"movntps %%xmm1, 16(%1)
\n
"
"movntps %%xmm2, 32(%1)
\n
"
"movntps %%xmm3, 48(%1)
\n
"
::
"r"
(
from
),
"r"
(
to
)
:
"memory"
);
::
"r"
(
from
),
"r"
(
to
)
:
"memory"
,
"xmm0"
,
"xmm1"
,
"xmm2"
,
"xmm3"
);
((
const
unsigned
char
*
)
from
)
+=
64
;
((
unsigned
char
*
)
to
)
+=
64
;
}
...
...
@@ -240,7 +245,7 @@ static void * fast_memcpy(void * to, const void * from, size_t len)
"movntps %%xmm1, 16(%1)
\n
"
"movntps %%xmm2, 32(%1)
\n
"
"movntps %%xmm3, 48(%1)
\n
"
::
"r"
(
from
),
"r"
(
to
)
:
"memory"
);
::
"r"
(
from
),
"r"
(
to
)
:
"memory"
,
"xmm0"
,
"xmm1"
,
"xmm2"
,
"xmm3"
);
((
const
unsigned
char
*
)
from
)
+=
64
;
((
unsigned
char
*
)
to
)
+=
64
;
}
...
...
@@ -268,7 +273,8 @@ static void * fast_memcpy(void * to, const void * from, size_t len)
MOVNTQ
" %%mm5, 40(%1)
\n
"
MOVNTQ
" %%mm6, 48(%1)
\n
"
MOVNTQ
" %%mm7, 56(%1)
\n
"
::
"r"
(
from
),
"r"
(
to
)
:
"memory"
);
::
"r"
(
from
),
"r"
(
to
)
:
"memory"
,
"mm0"
,
"mm1"
,
"mm2"
,
"mm3"
,
"mm4"
,
"mm5"
,
"mm6"
,
"mm7"
);
from
=
(
const
void
*
)
(((
const
unsigned
char
*
)
from
)
+
64
);
to
=
(
void
*
)
(((
unsigned
char
*
)
to
)
+
64
);
}
...
...
@@ -333,7 +339,8 @@ static void * fast_memcpy(void * to, const void * from, size_t len)
" jae 1b
\n\t
"
:
"+r"
(
from
),
"+r"
(
to
),
"+r"
(
i
)
:
"r"
(
BLOCK_SIZE
),
"i"
(
BLOCK_SIZE
/
64
),
"i"
(
CONFUSION_FACTOR
)
:
"%eax"
,
"%ebx"
:
"%eax"
,
"%ebx"
,
"mm0"
,
"mm1"
,
"mm2"
,
"mm3"
,
"mm4"
,
"mm5"
,
"mm6"
,
"mm7"
);
#endif
...
...
@@ -359,7 +366,8 @@ static void * fast_memcpy(void * to, const void * from, size_t len)
MOVNTQ
" %%mm5, 40(%1)
\n
"
MOVNTQ
" %%mm6, 48(%1)
\n
"
MOVNTQ
" %%mm7, 56(%1)
\n
"
::
"r"
(
from
),
"r"
(
to
)
:
"memory"
);
::
"r"
(
from
),
"r"
(
to
)
:
"memory"
,
"mm0"
,
"mm1"
,
"mm2"
,
"mm3"
,
"mm4"
,
"mm5"
,
"mm6"
,
"mm7"
);
from
=
(
const
void
*
)
(((
const
unsigned
char
*
)
from
)
+
64
);
to
=
(
void
*
)
(((
unsigned
char
*
)
to
)
+
64
);
}
...
...
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