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Diffstat (limited to 'sysdeps/powerpc/powerpc64/strcpy.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/strcpy.S | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/sysdeps/powerpc/powerpc64/strcpy.S b/sysdeps/powerpc/powerpc64/strcpy.S deleted file mode 100644 index c48b21e07b..0000000000 --- a/sysdeps/powerpc/powerpc64/strcpy.S +++ /dev/null @@ -1,216 +0,0 @@ -/* Optimized strcpy implementation for PowerPC64. - Copyright (C) 1997-2015 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - 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> - -/* See strlen.s for comments on how the end-of-string testing works. */ - -/* char * [r3] strcpy (char *dest [r3], const char *src [r4]) */ - -#ifdef USE_AS_STPCPY -# define FUNC_NAME __stpcpy -#else -# define FUNC_NAME strcpy -#endif - -EALIGN (FUNC_NAME, 4, 0) - CALL_MCOUNT 2 - -#define rTMP r0 -#ifdef USE_AS_STPCPY -#define rRTN r3 /* pointer to previous word/doubleword in dest */ -#else -#define rRTN r12 /* pointer to previous word/doubleword in dest */ -#endif -#define rSRC r4 /* pointer to previous word/doubleword in src */ -#define rWORD r6 /* current word from src */ -#define rFEFE r7 /* constant 0xfefefeff | 0xfefefefefefefeff */ -#define r7F7F r8 /* constant 0x7f7f7f7f | 0x7f7f7f7f7f7f7f7f */ -#define rNEG r9 /* ~(word in s1 | r7F7F) */ -#define rALT r10 /* alternate word from src */ - -#ifndef USE_AS_STPCPY -/* Save the dst pointer to use as return value. */ - mr rRTN, r3 -#endif - or rTMP, rSRC, rRTN - clrldi. rTMP, rTMP, 61 - bne L(check_word_alignment) - -/* For doubleword aligned memory, operate using doubleword load and stores. */ - addi rRTN, rRTN, -8 - - lis rFEFE, -0x101 - lis r7F7F, 0x7f7f - ld rWORD, 0(rSRC) - addi rFEFE, rFEFE, -0x101 - addi r7F7F, r7F7F, 0x7f7f - sldi rTMP, rFEFE, 32 - insrdi r7F7F, r7F7F, 32, 0 - add rFEFE, rFEFE, rTMP - b L(g2) - -L(g0): ldu rALT, 8(rSRC) - stdu rWORD, 8(rRTN) - add rTMP, rFEFE, rALT - nor rNEG, r7F7F, rALT - and. rTMP, rTMP, rNEG - bne- L(g1) - ldu rWORD, 8(rSRC) - stdu rALT, 8(rRTN) -L(g2): add rTMP, rFEFE, rWORD - nor rNEG, r7F7F, rWORD - and. rTMP, rTMP, rNEG - beq+ L(g0) - - mr rALT, rWORD -/* We've hit the end of the string. Do the rest byte-by-byte. */ -L(g1): -#ifdef __LITTLE_ENDIAN__ - extrdi. rTMP, rALT, 8, 56 - stbu rALT, 8(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 48 - stbu rTMP, 1(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 40 - stbu rTMP, 1(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 32 - stbu rTMP, 1(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 24 - stbu rTMP, 1(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 16 - stbu rTMP, 1(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 8 - stbu rTMP, 1(rRTN) - beqlr- - extrdi rTMP, rALT, 8, 0 - stbu rTMP, 1(rRTN) -#else - extrdi. rTMP, rALT, 8, 0 - stbu rTMP, 8(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 8 - stbu rTMP, 1(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 16 - stbu rTMP, 1(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 24 - stbu rTMP, 1(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 32 - stbu rTMP, 1(rRTN) - beqlr - extrdi. rTMP, rALT, 8, 40 - stbu rTMP, 1(rRTN) - beqlr- - extrdi. rTMP, rALT, 8, 48 - stbu rTMP, 1(rRTN) - beqlr- - stbu rALT, 1(rRTN) -#endif - blr - -L(check_word_alignment): - clrldi. rTMP, rTMP, 62 - bne L(unaligned) - -/* For word aligned memory, operate using word load and stores. */ - addi rRTN, rRTN, -4 - - lis rFEFE, -0x101 - lis r7F7F, 0x7f7f - lwz rWORD, 0(rSRC) - addi rFEFE, rFEFE, -0x101 - addi r7F7F, r7F7F, 0x7f7f - b L(g5) - -L(g3): lwzu rALT, 4(rSRC) - stwu rWORD, 4(rRTN) - add rTMP, rFEFE, rALT - nor rNEG, r7F7F, rALT - and. rTMP, rTMP, rNEG - bne- L(g4) - lwzu rWORD, 4(rSRC) - stwu rALT, 4(rRTN) -L(g5): add rTMP, rFEFE, rWORD - nor rNEG, r7F7F, rWORD - and. rTMP, rTMP, rNEG - beq+ L(g3) - - mr rALT, rWORD -/* We've hit the end of the string. Do the rest byte-by-byte. */ -L(g4): -#ifdef __LITTLE_ENDIAN__ - rlwinm. rTMP, rALT, 0, 24, 31 - stbu rALT, 4(rRTN) - beqlr- - rlwinm. rTMP, rALT, 24, 24, 31 - stbu rTMP, 1(rRTN) - beqlr- - rlwinm. rTMP, rALT, 16, 24, 31 - stbu rTMP, 1(rRTN) - beqlr- - rlwinm rTMP, rALT, 8, 24, 31 - stbu rTMP, 1(rRTN) -#else - rlwinm. rTMP, rALT, 8, 24, 31 - stbu rTMP, 4(rRTN) - beqlr- - rlwinm. rTMP, rALT, 16, 24, 31 - stbu rTMP, 1(rRTN) - beqlr- - rlwinm. rTMP, rALT, 24, 24, 31 - stbu rTMP, 1(rRTN) - beqlr- - stbu rALT, 1(rRTN) -#endif - blr - -/* Oh well. In this case, we just do a byte-by-byte copy. */ - .align 4 - nop -L(unaligned): - lbz rWORD, 0(rSRC) - addi rRTN, rRTN, -1 - cmpwi rWORD, 0 - beq- L(u2) - -L(u0): lbzu rALT, 1(rSRC) - stbu rWORD, 1(rRTN) - cmpwi rALT, 0 - beq- L(u1) - nop /* Let 601 load start of loop. */ - lbzu rWORD, 1(rSRC) - stbu rALT, 1(rRTN) - cmpwi rWORD, 0 - bne+ L(u0) -L(u2): stbu rWORD, 1(rRTN) - blr -L(u1): stbu rALT, 1(rRTN) - blr -END (FUNC_NAME) - -#ifndef USE_AS_STPCPY -libc_hidden_builtin_def (strcpy) -#endif |