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Diffstat (limited to 'newlib/libc/machine/spu/memmove.c')
| -rw-r--r-- | newlib/libc/machine/spu/memmove.c | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/newlib/libc/machine/spu/memmove.c b/newlib/libc/machine/spu/memmove.c deleted file mode 100644 index f2fe4f983..000000000 --- a/newlib/libc/machine/spu/memmove.c +++ /dev/null @@ -1,216 +0,0 @@ -/* - (C) Copyright 2001,2006, - International Business Machines Corporation, - Sony Computer Entertainment, Incorporated, - Toshiba Corporation, - - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - * Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - * Neither the names of the copyright holders nor the names of their - contributors may be used to endorse or promote products derived from this - software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - POSSIBILITY OF SUCH DAMAGE. -*/ -#include <spu_intrinsics.h> -#include <stddef.h> -#include "vec_literal.h" - -/* Copy n bytes from memory area src to memory area dest. - * Copying is performed as if the n characters pointed to - * by src are first copied into a temporary array that does - * not overlap the src and dest arrays. Then the n characters - * of the temporary array are copied into the destination - * array. The memmove subroutine returns a pointer to dest. - */ - -void * memmove(void * __restrict__ dest, const void * __restrict__ src, size_t n) -{ - int adjust, delta; - unsigned int soffset1, soffset2, doffset1, doffset2; - vec_uchar16 *vSrc, *vDst; - vec_uchar16 sdata1, sdata2, sdata, ddata, shuffle; - vec_uchar16 mask, mask1, mask2, mask3, one = spu_splats((unsigned char)-1); - - soffset1 = (unsigned int)(src) & 15; - doffset1 = (unsigned int)(dest) & 15; - doffset2 = ((unsigned int)(dest) + n) & 15; - - /* Construct a series of masks used to data insert. The masks - * contains 0 bit when the destination word is unchanged, 1 when it - * must be replaced by source bits. - * - * mask1 = mask for leading unchanged bytes - * mask2 = mask for trailing unchange bytes - * mask3 = mask indicating the more than one qword is being changed. - */ - mask = one; - mask1 = spu_rlmaskqwbyte(mask, -doffset1); - mask2 = spu_slqwbyte(mask, 16-doffset2); - mask3 = (vec_uchar16)spu_cmpgt(spu_splats((unsigned int)(doffset1 + n)), 15); - - vDst = (vec_uchar16 *)(dest); - - delta = (int)soffset1 - (int)doffset1; - - /* The follow check only works if the SPU addresses are not - * wrapped. No provisions have been made to correct for this - * limitation. - */ - if (((unsigned int)dest - (unsigned int)src) >= (unsigned int)n) { - /* Forward copy. Perform a memcpy. - * - * Handle any leading destination partial quadwords as - * well a very short copy (ie, such that the n characters - * all reside in a single (destination) quadword. - */ - vSrc = (vec_uchar16 *)(src); - vDst = (vec_uchar16 *)(dest); - - /* Handle any leading destination partial quadwords as - * well a very short copy (ie, such that the n characters - * all reside in a single (destination) quadword. - */ - soffset1 = (unsigned int)(src) & 15; - doffset1 = (unsigned int)(dest) & 15; - doffset2 = ((unsigned int)(dest) + n) & 15; - - /* Compute a shuffle pattern used to align the source string - * with the alignment of the destination string. - */ - - adjust = (int)spu_extract(spu_cmpgt(spu_promote(doffset1, 0), spu_promote(soffset1, 0)), 0); - delta = (int)soffset1 - (int)doffset1; - delta += adjust & 16; - - shuffle = (vec_uchar16)spu_add((vec_uint4)spu_splats((unsigned char)delta), - VEC_LITERAL(vec_uint4, 0x00010203, 0x04050607, 0x08090A0B, 0x0C0D0E0F)); - - vSrc += adjust; - - sdata1 = *vSrc++; - sdata2 = *vSrc++; - - ddata = *vDst; - sdata = spu_shuffle(sdata1, sdata2, shuffle); - - /* Construct a series of masks used to data insert. The masks - * contain 0 when the destination word is unchanged, 1 when it - * must be replaced by source bytes. - * - * mask1 = mask for leading unchanged bytes - * mask2 = mask for trailing unchange bytes - * mask3 = mask indicating the more than one qword is being changed. - */ - mask = one; - mask1 = spu_rlmaskqwbyte(mask, -doffset1); - mask2 = spu_slqwbyte(mask, 16-doffset2); - mask3 = (vec_uchar16)spu_cmpgt(spu_splats((unsigned int)(doffset1 + n)), 15); - - *vDst++ = spu_sel(ddata, sdata, spu_and(mask1, spu_or(mask2, mask3))); - - n += doffset1; - - /* Handle complete destination quadwords - */ - while (n > 31) { - sdata1 = sdata2; - sdata2 = *vSrc++; - *vDst++ = spu_shuffle(sdata1, sdata2, shuffle); - n -= 16; - } - - /* Handle any trailing partial (destination) quadwords - */ - mask = spu_and((vec_uchar16)spu_cmpgt(spu_splats((unsigned int)n), 16), mask2); - *vDst = spu_sel(*vDst, spu_shuffle(sdata2, *vSrc, shuffle), mask); - - } else { - /* Backward copy. - * - * Handle any leading destination partial quadwords as - * well a very short copy (ie, such that the n characters - * all reside in a single (destination) quadword. - */ - vSrc = (vec_uchar16 *)((unsigned int)src + n-1); - vDst = (vec_uchar16 *)((unsigned int)dest + n-1); - - /* Handle any leading destination partial quadwords as - * well a very short copy (ie, such that the n characters - * all reside in a single (destination) quadword. - */ - soffset1 = (unsigned int)(src) & 15; - soffset2 = (unsigned int)(vSrc) & 15; - doffset1 = (unsigned int)(dest) & 15; - doffset2 = (unsigned int)(vDst) & 15; - - /* Compute a shuffle pattern used to align the source string - * with the alignment of the destination string. - */ - adjust = (int)spu_extract(spu_cmpgt(spu_promote(soffset2, 0), spu_promote(doffset2, 0)), 0); - delta = (int)doffset2 - (int)soffset2; - delta += adjust & 16; - - shuffle = (vec_uchar16)spu_sub(VEC_LITERAL(vec_uint4, 0x10111213, 0x14151617, 0x18191A1B, 0x1C1D1E1F), - (vec_uint4)spu_splats((unsigned char)delta)); - - vSrc -= adjust; - - sdata2 = *vSrc--; - sdata1 = *vSrc--; - - ddata = *vDst; - sdata = spu_shuffle(sdata1, sdata2, shuffle); - - /* Construct a series of masks used to data insert. The masks - * contain 0 when the destination word is unchanged, 1 when it - * must be replaced by source bytes. - * - * mask1 = mask for leading unchanged bytes - * mask2 = mask for trailing unchange bytes - * mask3 = mask indicating the more than one qword is being changed. - */ - mask = one; - mask1 = spu_rlmaskqwbyte(mask, -doffset1); - mask2 = spu_slqwbyte(mask, 15-doffset2); - mask3 = (vec_uchar16)spu_cmpgt(spu_splats((int)(doffset2 - n)), -2); - - *vDst-- = spu_sel(ddata, sdata, spu_and(mask2, spu_orc(mask1, mask3))); - - n -= doffset2 + 1; - - /* Handle complete destination quadwords - */ - while ((int)n > 15) { - sdata2 = sdata1; - sdata1 = *vSrc--; - *vDst-- = spu_shuffle(sdata1, sdata2, shuffle); - n -= 16; - } - - /* Handle any trailing partial (destination) quadwords - */ - mask = spu_and((vec_uchar16)spu_cmpgt(spu_splats((int)n), 0), mask1); - *vDst = spu_sel(*vDst, spu_shuffle(*vSrc, sdata1, shuffle), mask); - } - return (dest); -} - |