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hyung-hwan 2008-04-25 07:40:41 +00:00
parent 6b1c8efb64
commit b63dc94757
1 changed files with 24 additions and 22 deletions
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42
ase/cmn/mem.c
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@ -1,5 +1,5 @@
/*
* $Id: mem.c 165 2008-04-24 13:34:17Z baconevi $
* $Id: mem.c 166 2008-04-24 13:40:41Z baconevi $
*
* {License}
*/
@ -65,41 +65,43 @@ void* ase_memset (void* dst, int val, ase_size_t n)
#elif defined(__SPU__)
/* a vector of 16 unsigned char cells */
vector unsigned char v16;
/* a pointer to such a vector */
vector unsigned char* vd;
ase_byte_t* d = (ase_byte_t*)dst;
ase_size_t rem;
/* fills all 16 unsigned char cells with the same value
* no need to use shift and bitwise-or owing to splats */
v16 = spu_splats((ase_byte_t)val);
/* spu SIMD instructions require 16-byte alignment */
rem = ((ase_size_t)dst) & (ASE_SIZEOF(v16)-1);
rem = ((ase_size_t)dst) & (ASE_SIZEOF(vector unsigned char)-1);
if (rem > 0)
{
ase_byte_t* d = (ase_byte_t*)dst;
do { *d++ = (ase_byte_t)val; }
while (n-- > 0 && ++rem < ASE_SIZEOF(v16));
vd = (vector unsigned char*)d;
while (n-- > 0 && ++rem < ASE_SIZEOF(vector unsigned char));
}
/* do the vector copy */
while (n >= ASE_SIZEOF(v16))
if (n >= ASE_SIZEOF(vector unsigned char))
{
/* a vector of 16 unsigned char cells */
vector unsigned char v16;
/* a pointer to such a vector */
vector unsigned char* vd = (vector unsigned char*)d;
/* fills all 16 unsigned char cells with the same value
* no need to use shift and bitwise-or owing to splats */
v16 = spu_splats((ase_byte_t)val);
do
{
*vd++ = v16;
n += ASE_SIZEOF(v16);
n += ASE_SIZEOF(vector unsigned char);
}
while (n >= ASE_SIZEOF(vector unsigned char));
d = (ase_byte_t*)vd;
}
{
/* handle the trailing bytes */
ase_byte_t* d = (ase_byte_t*)dst;
/* handle the trailing parts */
while (n-- > 0) *d++ = (ase_byte_t)val;
}
return dst;
#else