diff options
Diffstat (limited to 'sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S')
| -rw-r--r-- | sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S | 325 |
1 files changed, 0 insertions, 325 deletions
diff --git a/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S b/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S deleted file mode 100644 index b8f5c3cb8f..0000000000 --- a/sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S +++ /dev/null @@ -1,325 +0,0 @@ -/* Copy SIZE bytes from SRC to DEST. - For UltraSPARC-III. - Copyright (C) 2001-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by David S. Miller (davem@redhat.com) - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> - -#define ASI_BLK_P 0xf0 -#define FPRS_FEF 0x04 -#define VISEntryHalf rd %fprs, %o5; wr %g0, FPRS_FEF, %fprs -#define VISExitHalf and %o5, FPRS_FEF, %o5; wr %o5, 0x0, %fprs - -#ifndef XCC -#define USE_BPR -#define XCC xcc -#endif - -#if IS_IN (libc) - - .register %g2,#scratch - .register %g3,#scratch - .register %g6,#scratch - - .text - -ENTRY(__mempcpy_ultra3) - ba,pt %XCC, 101f - add %o0, %o2, %g5 -END(__mempcpy_ultra3) - - /* Special/non-trivial issues of this code: - * - * 1) %o5 is preserved from VISEntryHalf to VISExitHalf - * 2) Only low 32 FPU registers are used so that only the - * lower half of the FPU register set is dirtied by this - * code. This is especially important in the kernel. - * 3) This code never prefetches cachelines past the end - * of the source buffer. - * - * The cheetah's flexible spine, oversized liver, enlarged heart, - * slender muscular body, and claws make it the swiftest hunter - * in Africa and the fastest animal on land. Can reach speeds - * of up to 2.4GB per second. - */ - .align 32 -ENTRY(__memcpy_ultra3) - -100: /* %o0=dst, %o1=src, %o2=len */ - mov %o0, %g5 -101: - cmp %o2, 0 - be,pn %XCC, out -218: or %o0, %o1, %o3 - cmp %o2, 16 - bleu,a,pn %XCC, small_copy - or %o3, %o2, %o3 - - cmp %o2, 256 - blu,pt %XCC, medium_copy - andcc %o3, 0x7, %g0 - - ba,pt %xcc, enter - andcc %o0, 0x3f, %g2 - - /* Here len >= 256 and condition codes reflect execution - * of "andcc %o0, 0x7, %g2", done by caller. - */ - .align 64 -enter: - /* Is 'dst' already aligned on an 64-byte boundary? */ - be,pt %XCC, 2f - - /* Compute abs((dst & 0x3f) - 0x40) into %g2. This is the number - * of bytes to copy to make 'dst' 64-byte aligned. We pre- - * subtract this from 'len'. - */ - sub %g2, 0x40, %g2 - sub %g0, %g2, %g2 - sub %o2, %g2, %o2 - - /* Copy %g2 bytes from src to dst, one byte at a time. */ -1: ldub [%o1 + 0x00], %o3 - add %o1, 0x1, %o1 - add %o0, 0x1, %o0 - subcc %g2, 0x1, %g2 - - bg,pt %XCC, 1b - stb %o3, [%o0 + -1] - -2: VISEntryHalf - and %o1, 0x7, %g1 - ba,pt %xcc, begin - alignaddr %o1, %g0, %o1 - - .align 64 -begin: - prefetch [%o1 + 0x000], #one_read - prefetch [%o1 + 0x040], #one_read - andn %o2, (0x40 - 1), %o4 - prefetch [%o1 + 0x080], #one_read - prefetch [%o1 + 0x0c0], #one_read - ldd [%o1 + 0x000], %f0 - prefetch [%o1 + 0x100], #one_read - ldd [%o1 + 0x008], %f2 - prefetch [%o1 + 0x140], #one_read - ldd [%o1 + 0x010], %f4 - prefetch [%o1 + 0x180], #one_read - faligndata %f0, %f2, %f16 - ldd [%o1 + 0x018], %f6 - faligndata %f2, %f4, %f18 - ldd [%o1 + 0x020], %f8 - faligndata %f4, %f6, %f20 - ldd [%o1 + 0x028], %f10 - faligndata %f6, %f8, %f22 - - ldd [%o1 + 0x030], %f12 - faligndata %f8, %f10, %f24 - ldd [%o1 + 0x038], %f14 - faligndata %f10, %f12, %f26 - ldd [%o1 + 0x040], %f0 - - sub %o4, 0x80, %o4 - add %o1, 0x40, %o1 - ba,pt %xcc, loop - srl %o4, 6, %o3 - - .align 64 -loop: - ldd [%o1 + 0x008], %f2 - faligndata %f12, %f14, %f28 - ldd [%o1 + 0x010], %f4 - faligndata %f14, %f0, %f30 - stda %f16, [%o0] ASI_BLK_P - ldd [%o1 + 0x018], %f6 - faligndata %f0, %f2, %f16 - - ldd [%o1 + 0x020], %f8 - faligndata %f2, %f4, %f18 - ldd [%o1 + 0x028], %f10 - faligndata %f4, %f6, %f20 - ldd [%o1 + 0x030], %f12 - faligndata %f6, %f8, %f22 - ldd [%o1 + 0x038], %f14 - faligndata %f8, %f10, %f24 - - ldd [%o1 + 0x040], %f0 - prefetch [%o1 + 0x180], #one_read - faligndata %f10, %f12, %f26 - subcc %o3, 0x01, %o3 - add %o1, 0x40, %o1 - bg,pt %XCC, loop - add %o0, 0x40, %o0 - - /* Finally we copy the last full 64-byte block. */ -loopfini: - ldd [%o1 + 0x008], %f2 - faligndata %f12, %f14, %f28 - ldd [%o1 + 0x010], %f4 - faligndata %f14, %f0, %f30 - stda %f16, [%o0] ASI_BLK_P - ldd [%o1 + 0x018], %f6 - faligndata %f0, %f2, %f16 - ldd [%o1 + 0x020], %f8 - faligndata %f2, %f4, %f18 - ldd [%o1 + 0x028], %f10 - faligndata %f4, %f6, %f20 - ldd [%o1 + 0x030], %f12 - faligndata %f6, %f8, %f22 - ldd [%o1 + 0x038], %f14 - faligndata %f8, %f10, %f24 - cmp %g1, 0 - be,pt %XCC, 1f - add %o0, 0x40, %o0 - ldd [%o1 + 0x040], %f0 -1: faligndata %f10, %f12, %f26 - faligndata %f12, %f14, %f28 - faligndata %f14, %f0, %f30 - stda %f16, [%o0] ASI_BLK_P - add %o0, 0x40, %o0 - add %o1, 0x40, %o1 - membar #Sync - - /* Now we copy the (len modulo 64) bytes at the end. - * Note how we borrow the %f0 loaded above. - * - * Also notice how this code is careful not to perform a - * load past the end of the src buffer. - */ -loopend: - and %o2, 0x3f, %o2 - andcc %o2, 0x38, %g2 - be,pn %XCC, endcruft - subcc %g2, 0x8, %g2 - be,pn %XCC, endcruft - cmp %g1, 0 - - be,a,pt %XCC, 1f - ldd [%o1 + 0x00], %f0 - -1: ldd [%o1 + 0x08], %f2 - add %o1, 0x8, %o1 - sub %o2, 0x8, %o2 - subcc %g2, 0x8, %g2 - faligndata %f0, %f2, %f8 - std %f8, [%o0 + 0x00] - be,pn %XCC, endcruft - add %o0, 0x8, %o0 - ldd [%o1 + 0x08], %f0 - add %o1, 0x8, %o1 - sub %o2, 0x8, %o2 - subcc %g2, 0x8, %g2 - faligndata %f2, %f0, %f8 - std %f8, [%o0 + 0x00] - bne,pn %XCC, 1b - add %o0, 0x8, %o0 - - /* If anything is left, we copy it one byte at a time. - * Note that %g1 is (src & 0x3) saved above before the - * alignaddr was performed. - */ -endcruft: - cmp %o2, 0 - add %o1, %g1, %o1 - VISExitHalf - be,pn %XCC, out - sub %o0, %o1, %o3 - - andcc %g1, 0x7, %g0 - bne,pn %icc, small_copy_unaligned - andcc %o2, 0x8, %g0 - be,pt %icc, 1f - nop - ldx [%o1], %o5 - stx %o5, [%o1 + %o3] - add %o1, 0x8, %o1 - -1: andcc %o2, 0x4, %g0 - be,pt %icc, 1f - nop - lduw [%o1], %o5 - stw %o5, [%o1 + %o3] - add %o1, 0x4, %o1 - -1: andcc %o2, 0x2, %g0 - be,pt %icc, 1f - nop - lduh [%o1], %o5 - sth %o5, [%o1 + %o3] - add %o1, 0x2, %o1 - -1: andcc %o2, 0x1, %g0 - be,pt %icc, out - nop - ldub [%o1], %o5 - ba,pt %xcc, out - stb %o5, [%o1 + %o3] - -medium_copy: /* 16 < len <= 64 */ - bne,pn %XCC, small_copy_unaligned - sub %o0, %o1, %o3 - -medium_copy_aligned: - andn %o2, 0x7, %o4 - and %o2, 0x7, %o2 -1: subcc %o4, 0x8, %o4 - ldx [%o1], %o5 - stx %o5, [%o1 + %o3] - bgu,pt %XCC, 1b - add %o1, 0x8, %o1 - andcc %o2, 0x4, %g0 - be,pt %XCC, 1f - nop - sub %o2, 0x4, %o2 - lduw [%o1], %o5 - stw %o5, [%o1 + %o3] - add %o1, 0x4, %o1 -1: cmp %o2, 0 - be,pt %XCC, out - nop - ba,pt %xcc, small_copy_unaligned - nop - -small_copy: /* 0 < len <= 16 */ - andcc %o3, 0x3, %g0 - bne,pn %XCC, small_copy_unaligned - sub %o0, %o1, %o3 - -small_copy_aligned: - subcc %o2, 4, %o2 - lduw [%o1], %g1 - stw %g1, [%o1 + %o3] - bgu,pt %XCC, small_copy_aligned - add %o1, 4, %o1 - -out: retl - mov %g5, %o0 - - .align 32 -small_copy_unaligned: - subcc %o2, 1, %o2 - ldub [%o1], %g1 - stb %g1, [%o1 + %o3] - bgu,pt %XCC, small_copy_unaligned - add %o1, 1, %o1 - retl - mov %g5, %o0 - -END(__memcpy_ultra3) - -#endif \ No newline at end of file |