diff options
Diffstat (limited to 'sysdeps/sparc/sparc64/sparcv9v/memcpy.S')
-rw-r--r-- | sysdeps/sparc/sparc64/sparcv9v/memcpy.S | 593 |
1 files changed, 0 insertions, 593 deletions
diff --git a/sysdeps/sparc/sparc64/sparcv9v/memcpy.S b/sysdeps/sparc/sparc64/sparcv9v/memcpy.S deleted file mode 100644 index 05c837f..0000000 --- a/sysdeps/sparc/sparc64/sparcv9v/memcpy.S +++ /dev/null @@ -1,593 +0,0 @@ -/* Copy SIZE bytes from SRC to DEST. For SUN4V Niagara. - Copyright (C) 2006 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by David S. Miller (davem@davemloft.net) - - 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <sysdep.h> - -#define ASI_BLK_INIT_QUAD_LDD_P 0xe2 -#define ASI_P 0x80 -#define ASI_PNF 0x82 - -#define LOAD(type,addr,dest) type##a [addr] ASI_P, dest -#define LOAD_TWIN(addr_reg,dest0,dest1) \ - ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_P, dest0 - -#define STORE(type,src,addr) type src, [addr] -#define STORE_INIT(src,addr) stxa src, [addr] %asi - -#ifndef XCC -#define USE_BPR -#define XCC xcc -#endif - - .register %g2,#scratch - .register %g3,#scratch - .register %g6,#scratch - - .text - .align 32 - -ENTRY(bcopy) - sub %o1, %o0, %o4 - mov %o0, %g4 - cmp %o4, %o2 - mov %o1, %o0 - bgeu,pt %XCC, 100f - mov %g4, %o1 -#ifndef USE_BPR - srl %o2, 0, %o2 -#endif - brnz,pn %o2, 220f - add %o0, %o2, %o0 - retl - nop -END(bcopy) - - .align 32 -ENTRY(memcpy) -100: /* %o0=dst, %o1=src, %o2=len */ - mov %o0, %g5 - cmp %o2, 0 - be,pn %XCC, 85f -218: or %o0, %o1, %o3 - cmp %o2, 16 - blu,a,pn %XCC, 80f - or %o3, %o2, %o3 - - /* 2 blocks (128 bytes) is the minimum we can do the block - * copy with. We need to ensure that we'll iterate at least - * once in the block copy loop. At worst we'll need to align - * the destination to a 64-byte boundary which can chew up - * to (64 - 1) bytes from the length before we perform the - * block copy loop. - */ - cmp %o2, (2 * 64) - blu,pt %XCC, 70f - andcc %o3, 0x7, %g0 - - /* %o0: dst - * %o1: src - * %o2: len (known to be >= 128) - * - * The block copy loops will use %o4/%o5,%g2/%g3 as - * temporaries while copying the data. - */ - - LOAD(prefetch, %o1, #one_read) - wr %g0, ASI_BLK_INIT_QUAD_LDD_P, %asi - - /* Align destination on 64-byte boundary. */ - andcc %o0, (64 - 1), %o4 - be,pt %XCC, 2f - sub %o4, 64, %o4 - sub %g0, %o4, %o4 ! bytes to align dst - sub %o2, %o4, %o2 -1: subcc %o4, 1, %o4 - LOAD(ldub, %o1, %g1) - STORE(stb, %g1, %o0) - add %o1, 1, %o1 - bne,pt %XCC, 1b - add %o0, 1, %o0 - - /* If the source is on a 16-byte boundary we can do - * the direct block copy loop. If it is 8-byte aligned - * we can do the 16-byte loads offset by -8 bytes and the - * init stores offset by one register. - * - * If the source is not even 8-byte aligned, we need to do - * shifting and masking (basically integer faligndata). - * - * The careful bit with init stores is that if we store - * to any part of the cache line we have to store the whole - * cacheline else we can end up with corrupt L2 cache line - * contents. Since the loop works on 64-bytes of 64-byte - * aligned store data at a time, this is easy to ensure. - */ -2: - andcc %o1, (16 - 1), %o4 - andn %o2, (64 - 1), %g1 ! block copy loop iterator - sub %o2, %g1, %o2 ! final sub-block copy bytes - be,pt %XCC, 50f - cmp %o4, 8 - be,a,pt %XCC, 10f - sub %o1, 0x8, %o1 - - /* Neither 8-byte nor 16-byte aligned, shift and mask. */ - mov %g1, %o4 - and %o1, 0x7, %g1 - sll %g1, 3, %g1 - mov 64, %o3 - andn %o1, 0x7, %o1 - LOAD(ldx, %o1, %g2) - sub %o3, %g1, %o3 - sllx %g2, %g1, %g2 - -#define SWIVEL_ONE_DWORD(SRC, TMP1, TMP2, PRE_VAL, PRE_SHIFT, POST_SHIFT, DST)\ - LOAD(ldx, SRC, TMP1); \ - srlx TMP1, PRE_SHIFT, TMP2; \ - or TMP2, PRE_VAL, TMP2; \ - STORE_INIT(TMP2, DST); \ - sllx TMP1, POST_SHIFT, PRE_VAL; - -1: add %o1, 0x8, %o1 - SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x00) - add %o1, 0x8, %o1 - SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x08) - add %o1, 0x8, %o1 - SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x10) - add %o1, 0x8, %o1 - SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x18) - add %o1, 32, %o1 - LOAD(prefetch, %o1, #one_read) - sub %o1, 32 - 8, %o1 - SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x20) - add %o1, 8, %o1 - SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x28) - add %o1, 8, %o1 - SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x30) - add %o1, 8, %o1 - SWIVEL_ONE_DWORD(%o1, %g3, %o5, %g2, %o3, %g1, %o0 + 0x38) - subcc %o4, 64, %o4 - bne,pt %XCC, 1b - add %o0, 64, %o0 - -#undef SWIVEL_ONE_DWORD - - srl %g1, 3, %g1 - ba,pt %XCC, 60f - add %o1, %g1, %o1 - -10: /* Destination is 64-byte aligned, source was only 8-byte - * aligned but it has been subtracted by 8 and we perform - * one twin load ahead, then add 8 back into source when - * we finish the loop. - */ - LOAD_TWIN(%o1, %o4, %o5) -1: add %o1, 16, %o1 - LOAD_TWIN(%o1, %g2, %g3) - add %o1, 16 + 32, %o1 - LOAD(prefetch, %o1, #one_read) - sub %o1, 32, %o1 - STORE_INIT(%o5, %o0 + 0x00) ! initializes cache line - STORE_INIT(%g2, %o0 + 0x08) - LOAD_TWIN(%o1, %o4, %o5) - add %o1, 16, %o1 - STORE_INIT(%g3, %o0 + 0x10) - STORE_INIT(%o4, %o0 + 0x18) - LOAD_TWIN(%o1, %g2, %g3) - add %o1, 16, %o1 - STORE_INIT(%o5, %o0 + 0x20) - STORE_INIT(%g2, %o0 + 0x28) - LOAD_TWIN(%o1, %o4, %o5) - STORE_INIT(%g3, %o0 + 0x30) - STORE_INIT(%o4, %o0 + 0x38) - subcc %g1, 64, %g1 - bne,pt %XCC, 1b - add %o0, 64, %o0 - - ba,pt %XCC, 60f - add %o1, 0x8, %o1 - -50: /* Destination is 64-byte aligned, and source is 16-byte - * aligned. - */ -1: LOAD_TWIN(%o1, %o4, %o5) - add %o1, 16, %o1 - LOAD_TWIN(%o1, %g2, %g3) - add %o1, 16 + 32, %o1 - LOAD(prefetch, %o1, #one_read) - sub %o1, 32, %o1 - STORE_INIT(%o4, %o0 + 0x00) ! initializes cache line - STORE_INIT(%o5, %o0 + 0x08) - LOAD_TWIN(%o1, %o4, %o5) - add %o1, 16, %o1 - STORE_INIT(%g2, %o0 + 0x10) - STORE_INIT(%g3, %o0 + 0x18) - LOAD_TWIN(%o1, %g2, %g3) - add %o1, 16, %o1 - STORE_INIT(%o4, %o0 + 0x20) - STORE_INIT(%o5, %o0 + 0x28) - STORE_INIT(%g2, %o0 + 0x30) - STORE_INIT(%g3, %o0 + 0x38) - subcc %g1, 64, %g1 - bne,pt %XCC, 1b - add %o0, 64, %o0 - /* fall through */ - -60: - /* %o2 contains any final bytes still needed to be copied - * over. If anything is left, we copy it one byte at a time. - */ - wr %g0, ASI_PNF, %asi - brz,pt %o2, 85f - sub %o0, %o1, %o3 - ba,a,pt %XCC, 90f - - .align 64 -70: /* 16 < len <= 64 */ - bne,pn %XCC, 75f - sub %o0, %o1, %o3 - -72: - andn %o2, 0xf, %o4 - and %o2, 0xf, %o2 -1: subcc %o4, 0x10, %o4 - LOAD(ldx, %o1, %o5) - add %o1, 0x08, %o1 - LOAD(ldx, %o1, %g1) - sub %o1, 0x08, %o1 - STORE(stx, %o5, %o1 + %o3) - add %o1, 0x8, %o1 - STORE(stx, %g1, %o1 + %o3) - bgu,pt %XCC, 1b - add %o1, 0x8, %o1 -73: andcc %o2, 0x8, %g0 - be,pt %XCC, 1f - nop - sub %o2, 0x8, %o2 - LOAD(ldx, %o1, %o5) - STORE(stx, %o5, %o1 + %o3) - add %o1, 0x8, %o1 -1: andcc %o2, 0x4, %g0 - be,pt %XCC, 1f - nop - sub %o2, 0x4, %o2 - LOAD(lduw, %o1, %o5) - STORE(stw, %o5, %o1 + %o3) - add %o1, 0x4, %o1 -1: cmp %o2, 0 - be,pt %XCC, 85f - nop - ba,pt %XCC, 90f - nop - -75: - andcc %o0, 0x7, %g1 - sub %g1, 0x8, %g1 - be,pn %icc, 2f - sub %g0, %g1, %g1 - sub %o2, %g1, %o2 - -1: subcc %g1, 1, %g1 - LOAD(ldub, %o1, %o5) - STORE(stb, %o5, %o1 + %o3) - bgu,pt %icc, 1b - add %o1, 1, %o1 - -2: add %o1, %o3, %o0 - andcc %o1, 0x7, %g1 - bne,pt %icc, 8f - sll %g1, 3, %g1 - - cmp %o2, 16 - bgeu,pt %icc, 72b - nop - ba,a,pt %XCC, 73b - -8: mov 64, %o3 - andn %o1, 0x7, %o1 - LOAD(ldx, %o1, %g2) - sub %o3, %g1, %o3 - andn %o2, 0x7, %o4 - sllx %g2, %g1, %g2 -1: add %o1, 0x8, %o1 - LOAD(ldx, %o1, %g3) - subcc %o4, 0x8, %o4 - srlx %g3, %o3, %o5 - or %o5, %g2, %o5 - STORE(stx, %o5, %o0) - add %o0, 0x8, %o0 - bgu,pt %icc, 1b - sllx %g3, %g1, %g2 - - srl %g1, 3, %g1 - andcc %o2, 0x7, %o2 - be,pn %icc, 85f - add %o1, %g1, %o1 - ba,pt %XCC, 90f - sub %o0, %o1, %o3 - - .align 64 -80: /* 0 < len <= 16 */ - andcc %o3, 0x3, %g0 - bne,pn %XCC, 90f - sub %o0, %o1, %o3 - -1: - subcc %o2, 4, %o2 - LOAD(lduw, %o1, %g1) - STORE(stw, %g1, %o1 + %o3) - bgu,pt %XCC, 1b - add %o1, 4, %o1 - -85: retl - mov %g5, %o0 - - .align 32 -90: - subcc %o2, 1, %o2 - LOAD(ldub, %o1, %g1) - STORE(stb, %g1, %o1 + %o3) - bgu,pt %XCC, 90b - add %o1, 1, %o1 - retl - mov %g5, %o0 - -END(memcpy) - -#define RMOVE_BIGCHUNK(src, dst, offset, t0, t1, t2, t3) \ - ldx [%src - offset - 0x20], %t0; \ - ldx [%src - offset - 0x18], %t1; \ - ldx [%src - offset - 0x10], %t2; \ - ldx [%src - offset - 0x08], %t3; \ - stw %t0, [%dst - offset - 0x1c]; \ - srlx %t0, 32, %t0; \ - stw %t0, [%dst - offset - 0x20]; \ - stw %t1, [%dst - offset - 0x14]; \ - srlx %t1, 32, %t1; \ - stw %t1, [%dst - offset - 0x18]; \ - stw %t2, [%dst - offset - 0x0c]; \ - srlx %t2, 32, %t2; \ - stw %t2, [%dst - offset - 0x10]; \ - stw %t3, [%dst - offset - 0x04]; \ - srlx %t3, 32, %t3; \ - stw %t3, [%dst - offset - 0x08]; - -#define RMOVE_BIGALIGNCHUNK(src, dst, offset, t0, t1, t2, t3) \ - ldx [%src - offset - 0x20], %t0; \ - ldx [%src - offset - 0x18], %t1; \ - ldx [%src - offset - 0x10], %t2; \ - ldx [%src - offset - 0x08], %t3; \ - stx %t0, [%dst - offset - 0x20]; \ - stx %t1, [%dst - offset - 0x18]; \ - stx %t2, [%dst - offset - 0x10]; \ - stx %t3, [%dst - offset - 0x08]; \ - ldx [%src - offset - 0x40], %t0; \ - ldx [%src - offset - 0x38], %t1; \ - ldx [%src - offset - 0x30], %t2; \ - ldx [%src - offset - 0x28], %t3; \ - stx %t0, [%dst - offset - 0x40]; \ - stx %t1, [%dst - offset - 0x38]; \ - stx %t2, [%dst - offset - 0x30]; \ - stx %t3, [%dst - offset - 0x28]; - -#define RMOVE_LASTCHUNK(src, dst, offset, t0, t1, t2, t3) \ - ldx [%src + offset + 0x00], %t0; \ - ldx [%src + offset + 0x08], %t1; \ - stw %t0, [%dst + offset + 0x04]; \ - srlx %t0, 32, %t2; \ - stw %t2, [%dst + offset + 0x00]; \ - stw %t1, [%dst + offset + 0x0c]; \ - srlx %t1, 32, %t3; \ - stw %t3, [%dst + offset + 0x08]; - -#define RMOVE_LASTALIGNCHUNK(src, dst, offset, t0, t1) \ - ldx [%src + offset + 0x00], %t0; \ - ldx [%src + offset + 0x08], %t1; \ - stx %t0, [%dst + offset + 0x00]; \ - stx %t1, [%dst + offset + 0x08]; - - .align 32 -228: andcc %o2, 1, %g0 - be,pt %icc, 2f+4 -1: ldub [%o1 - 1], %o5 - sub %o1, 1, %o1 - sub %o0, 1, %o0 - subcc %o2, 1, %o2 - be,pn %xcc, 229f - stb %o5, [%o0] -2: ldub [%o1 - 1], %o5 - sub %o0, 2, %o0 - ldub [%o1 - 2], %g5 - sub %o1, 2, %o1 - subcc %o2, 2, %o2 - stb %o5, [%o0 + 1] - bne,pt %xcc, 2b - stb %g5, [%o0] -229: retl - mov %g4, %o0 -out: retl - mov %g5, %o0 - - .align 32 -ENTRY(memmove) - mov %o0, %g5 -#ifndef USE_BPR - srl %o2, 0, %o2 -#endif - brz,pn %o2, out - sub %o0, %o1, %o4 - cmp %o4, %o2 - bgeu,pt %XCC, 218b - mov %o0, %g4 - add %o0, %o2, %o0 -220: add %o1, %o2, %o1 - cmp %o2, 15 - bleu,pn %xcc, 228b - andcc %o0, 7, %g2 - sub %o0, %o1, %g5 - andcc %g5, 3, %o5 - bne,pn %xcc, 232f - andcc %o1, 3, %g0 - be,a,pt %xcc, 236f - andcc %o1, 4, %g0 - andcc %o1, 1, %g0 - be,pn %xcc, 4f - andcc %o1, 2, %g0 - ldub [%o1 - 1], %g2 - sub %o1, 1, %o1 - sub %o0, 1, %o0 - sub %o2, 1, %o2 - be,pn %xcc, 5f - stb %g2, [%o0] -4: lduh [%o1 - 2], %g2 - sub %o1, 2, %o1 - sub %o0, 2, %o0 - sub %o2, 2, %o2 - sth %g2, [%o0] -5: andcc %o1, 4, %g0 -236: be,a,pn %xcc, 2f - andcc %o2, -128, %g6 - lduw [%o1 - 4], %g5 - sub %o1, 4, %o1 - sub %o0, 4, %o0 - sub %o2, 4, %o2 - stw %g5, [%o0] - andcc %o2, -128, %g6 -2: be,pn %xcc, 235f - andcc %o0, 4, %g0 - be,pn %xcc, 282f + 4 -5: RMOVE_BIGCHUNK(o1, o0, 0x00, g1, g3, g5, o5) - RMOVE_BIGCHUNK(o1, o0, 0x20, g1, g3, g5, o5) - RMOVE_BIGCHUNK(o1, o0, 0x40, g1, g3, g5, o5) - RMOVE_BIGCHUNK(o1, o0, 0x60, g1, g3, g5, o5) - subcc %g6, 128, %g6 - sub %o1, 128, %o1 - bne,pt %xcc, 5b - sub %o0, 128, %o0 -235: andcc %o2, 0x70, %g6 -41: be,pn %xcc, 280f - andcc %o2, 8, %g0 - -279: rd %pc, %o5 - sll %g6, 1, %g5 - sub %o1, %g6, %o1 - sub %o5, %g5, %o5 - jmpl %o5 + %lo(280f - 279b), %g0 - sub %o0, %g6, %o0 - RMOVE_LASTCHUNK(o1, o0, 0x60, g2, g3, g5, o5) - RMOVE_LASTCHUNK(o1, o0, 0x50, g2, g3, g5, o5) - RMOVE_LASTCHUNK(o1, o0, 0x40, g2, g3, g5, o5) - RMOVE_LASTCHUNK(o1, o0, 0x30, g2, g3, g5, o5) - RMOVE_LASTCHUNK(o1, o0, 0x20, g2, g3, g5, o5) - RMOVE_LASTCHUNK(o1, o0, 0x10, g2, g3, g5, o5) - RMOVE_LASTCHUNK(o1, o0, 0x00, g2, g3, g5, o5) -280: be,pt %xcc, 281f - andcc %o2, 4, %g0 - ldx [%o1 - 8], %g2 - sub %o0, 8, %o0 - stw %g2, [%o0 + 4] - sub %o1, 8, %o1 - srlx %g2, 32, %g2 - stw %g2, [%o0] -281: be,pt %xcc, 1f - andcc %o2, 2, %g0 - lduw [%o1 - 4], %g2 - sub %o1, 4, %o1 - stw %g2, [%o0 - 4] - sub %o0, 4, %o0 -1: be,pt %xcc, 1f - andcc %o2, 1, %g0 - lduh [%o1 - 2], %g2 - sub %o1, 2, %o1 - sth %g2, [%o0 - 2] - sub %o0, 2, %o0 -1: be,pt %xcc, 211f - nop - ldub [%o1 - 1], %g2 - stb %g2, [%o0 - 1] -211: retl - mov %g4, %o0 - -282: RMOVE_BIGALIGNCHUNK(o1, o0, 0x00, g1, g3, g5, o5) - RMOVE_BIGALIGNCHUNK(o1, o0, 0x40, g1, g3, g5, o5) - subcc %g6, 128, %g6 - sub %o1, 128, %o1 - bne,pt %xcc, 282b - sub %o0, 128, %o0 - andcc %o2, 0x70, %g6 - be,pn %xcc, 284f - andcc %o2, 8, %g0 - -283: rd %pc, %o5 - sub %o1, %g6, %o1 - sub %o5, %g6, %o5 - jmpl %o5 + %lo(284f - 283b), %g0 - sub %o0, %g6, %o0 - RMOVE_LASTALIGNCHUNK(o1, o0, 0x60, g2, g3) - RMOVE_LASTALIGNCHUNK(o1, o0, 0x50, g2, g3) - RMOVE_LASTALIGNCHUNK(o1, o0, 0x40, g2, g3) - RMOVE_LASTALIGNCHUNK(o1, o0, 0x30, g2, g3) - RMOVE_LASTALIGNCHUNK(o1, o0, 0x20, g2, g3) - RMOVE_LASTALIGNCHUNK(o1, o0, 0x10, g2, g3) - RMOVE_LASTALIGNCHUNK(o1, o0, 0x00, g2, g3) -284: be,pt %xcc, 285f - andcc %o2, 4, %g0 - ldx [%o1 - 8], %g2 - sub %o0, 8, %o0 - sub %o1, 8, %o1 - stx %g2, [%o0] -285: be,pt %xcc, 1f - andcc %o2, 2, %g0 - lduw [%o1 - 4], %g2 - sub %o0, 4, %o0 - sub %o1, 4, %o1 - stw %g2, [%o0] -1: be,pt %xcc, 1f - andcc %o2, 1, %g0 - lduh [%o1 - 2], %g2 - sub %o0, 2, %o0 - sub %o1, 2, %o1 - sth %g2, [%o0] -1: be,pt %xcc, 1f - nop - ldub [%o1 - 1], %g2 - stb %g2, [%o0 - 1] -1: retl - mov %g4, %o0 - -232: ldub [%o1 - 1], %g5 - sub %o1, 1, %o1 - sub %o0, 1, %o0 - subcc %o2, 1, %o2 - bne,pt %xcc, 232b - stb %g5, [%o0] -234: retl - mov %g4, %o0 -END(memmove) - -#ifdef USE_BPR -weak_alias (memcpy, __align_cpy_1) -weak_alias (memcpy, __align_cpy_2) -weak_alias (memcpy, __align_cpy_4) -weak_alias (memcpy, __align_cpy_8) -weak_alias (memcpy, __align_cpy_16) -#endif -libc_hidden_builtin_def (memcpy) -libc_hidden_builtin_def (memmove) |