2002-09-17 23:50:03 +00:00
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/* Optimized strcpy implementation for PowerPC64.
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2015-01-02 16:28:19 +00:00
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Copyright (C) 1997-2015 Free Software Foundation, Inc.
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2002-09-17 23:50:03 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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2012-02-09 23:18:22 +00:00
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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2002-09-17 23:50:03 +00:00
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#include <sysdep.h>
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/* See strlen.s for comments on how the end-of-string testing works. */
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/* char * [r3] strcpy (char *dest [r3], const char *src [r4]) */
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2013-09-26 14:29:19 +00:00
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#ifdef USE_AS_STPCPY
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# define FUNC_NAME __stpcpy
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#else
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# define FUNC_NAME strcpy
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#endif
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EALIGN (FUNC_NAME, 4, 0)
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2004-10-06 22:09:35 +00:00
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CALL_MCOUNT 2
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2002-09-17 23:50:03 +00:00
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#define rTMP r0
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2013-09-26 14:29:19 +00:00
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#ifdef USE_AS_STPCPY
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#define rRTN r3 /* pointer to previous word/doubleword in dest */
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#else
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#define rRTN r12 /* pointer to previous word/doubleword in dest */
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#endif
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#define rSRC r4 /* pointer to previous word/doubleword in src */
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2002-09-17 23:50:03 +00:00
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#define rWORD r6 /* current word from src */
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2013-09-26 14:29:19 +00:00
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#define rFEFE r7 /* constant 0xfefefeff | 0xfefefefefefefeff */
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#define r7F7F r8 /* constant 0x7f7f7f7f | 0x7f7f7f7f7f7f7f7f */
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#define rNEG r9 /* ~(word in s1 | r7F7F) */
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2002-09-17 23:50:03 +00:00
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#define rALT r10 /* alternate word from src */
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2013-09-26 14:29:19 +00:00
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#ifndef USE_AS_STPCPY
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/* Save the dst pointer to use as return value. */
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mr rRTN, r3
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#endif
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2002-09-17 23:50:03 +00:00
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or rTMP, rSRC, rRTN
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2003-04-15 19:45:39 +00:00
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clrldi. rTMP, rTMP, 61
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2013-09-26 14:29:19 +00:00
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bne L(check_word_alignment)
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/* For doubleword aligned memory, operate using doubleword load and stores. */
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addi rRTN, rRTN, -8
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2002-09-17 23:50:03 +00:00
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lis rFEFE, -0x101
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lis r7F7F, 0x7f7f
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2003-04-15 19:45:39 +00:00
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ld rWORD, 0(rSRC)
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2002-09-17 23:50:03 +00:00
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addi rFEFE, rFEFE, -0x101
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addi r7F7F, r7F7F, 0x7f7f
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2003-04-15 19:45:39 +00:00
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sldi rTMP, rFEFE, 32
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insrdi r7F7F, r7F7F, 32, 0
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add rFEFE, rFEFE, rTMP
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2002-09-17 23:50:03 +00:00
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b L(g2)
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2003-04-15 19:45:39 +00:00
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L(g0): ldu rALT, 8(rSRC)
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2013-09-26 14:29:19 +00:00
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stdu rWORD, 8(rRTN)
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2002-09-17 23:50:03 +00:00
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add rTMP, rFEFE, rALT
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nor rNEG, r7F7F, rALT
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and. rTMP, rTMP, rNEG
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bne- L(g1)
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2003-04-15 19:45:39 +00:00
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ldu rWORD, 8(rSRC)
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2013-09-26 14:29:19 +00:00
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stdu rALT, 8(rRTN)
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2002-09-17 23:50:03 +00:00
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L(g2): add rTMP, rFEFE, rWORD
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nor rNEG, r7F7F, rWORD
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and. rTMP, rTMP, rNEG
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beq+ L(g0)
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mr rALT, rWORD
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/* We've hit the end of the string. Do the rest byte-by-byte. */
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2003-04-15 19:45:39 +00:00
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L(g1):
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2013-08-17 09:15:31 +00:00
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#ifdef __LITTLE_ENDIAN__
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extrdi. rTMP, rALT, 8, 56
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2013-09-26 14:29:19 +00:00
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stbu rALT, 8(rRTN)
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2013-08-17 09:15:31 +00:00
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beqlr-
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extrdi. rTMP, rALT, 8, 48
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2013-08-17 09:15:31 +00:00
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beqlr-
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extrdi. rTMP, rALT, 8, 40
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2013-08-17 09:15:31 +00:00
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beqlr-
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extrdi. rTMP, rALT, 8, 32
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2013-08-17 09:15:31 +00:00
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beqlr-
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extrdi. rTMP, rALT, 8, 24
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2013-08-17 09:15:31 +00:00
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beqlr-
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extrdi. rTMP, rALT, 8, 16
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2013-08-17 09:15:31 +00:00
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beqlr-
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extrdi. rTMP, rALT, 8, 8
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2013-08-17 09:15:31 +00:00
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beqlr-
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extrdi rTMP, rALT, 8, 0
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2013-08-17 09:15:31 +00:00
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#else
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2003-04-15 19:45:39 +00:00
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extrdi. rTMP, rALT, 8, 0
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 8(rRTN)
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2002-09-17 23:50:03 +00:00
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beqlr-
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2003-04-15 19:45:39 +00:00
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extrdi. rTMP, rALT, 8, 8
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2002-09-17 23:50:03 +00:00
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beqlr-
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2003-04-15 19:45:39 +00:00
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extrdi. rTMP, rALT, 8, 16
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2002-09-17 23:50:03 +00:00
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beqlr-
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2003-04-15 19:45:39 +00:00
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extrdi. rTMP, rALT, 8, 24
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2003-04-15 19:45:39 +00:00
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beqlr-
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extrdi. rTMP, rALT, 8, 32
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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beqlr
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2003-04-15 19:45:39 +00:00
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extrdi. rTMP, rALT, 8, 40
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2003-04-15 19:45:39 +00:00
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beqlr-
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extrdi. rTMP, rALT, 8, 48
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2013-09-26 14:29:19 +00:00
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stbu rTMP, 1(rRTN)
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2003-04-15 19:45:39 +00:00
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beqlr-
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2013-09-26 14:29:19 +00:00
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stbu rALT, 1(rRTN)
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#endif
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2002-09-17 23:50:03 +00:00
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blr
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2013-09-26 14:29:19 +00:00
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L(check_word_alignment):
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clrldi. rTMP, rTMP, 62
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bne L(unaligned)
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/* For word aligned memory, operate using word load and stores. */
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addi rRTN, rRTN, -4
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lis rFEFE, -0x101
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lis r7F7F, 0x7f7f
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lwz rWORD, 0(rSRC)
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addi rFEFE, rFEFE, -0x101
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addi r7F7F, r7F7F, 0x7f7f
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b L(g5)
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L(g3): lwzu rALT, 4(rSRC)
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stwu rWORD, 4(rRTN)
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add rTMP, rFEFE, rALT
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nor rNEG, r7F7F, rALT
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and. rTMP, rTMP, rNEG
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bne- L(g4)
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lwzu rWORD, 4(rSRC)
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stwu rALT, 4(rRTN)
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L(g5): add rTMP, rFEFE, rWORD
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nor rNEG, r7F7F, rWORD
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and. rTMP, rTMP, rNEG
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beq+ L(g3)
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mr rALT, rWORD
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/* We've hit the end of the string. Do the rest byte-by-byte. */
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L(g4):
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#ifdef __LITTLE_ENDIAN__
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rlwinm. rTMP, rALT, 0, 24, 31
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stbu rALT, 4(rRTN)
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beqlr-
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rlwinm. rTMP, rALT, 24, 24, 31
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stbu rTMP, 1(rRTN)
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beqlr-
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rlwinm. rTMP, rALT, 16, 24, 31
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stbu rTMP, 1(rRTN)
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beqlr-
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rlwinm rTMP, rALT, 8, 24, 31
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stbu rTMP, 1(rRTN)
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#else
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rlwinm. rTMP, rALT, 8, 24, 31
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stbu rTMP, 4(rRTN)
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beqlr-
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rlwinm. rTMP, rALT, 16, 24, 31
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stbu rTMP, 1(rRTN)
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beqlr-
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rlwinm. rTMP, rALT, 24, 24, 31
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stbu rTMP, 1(rRTN)
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beqlr-
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stbu rALT, 1(rRTN)
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2013-08-17 09:15:31 +00:00
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#endif
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2013-09-26 14:29:19 +00:00
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blr
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2002-09-17 23:50:03 +00:00
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/* Oh well. In this case, we just do a byte-by-byte copy. */
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.align 4
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nop
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L(unaligned):
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lbz rWORD, 0(rSRC)
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2013-09-26 14:29:19 +00:00
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addi rRTN, rRTN, -1
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2002-09-17 23:50:03 +00:00
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cmpwi rWORD, 0
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beq- L(u2)
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L(u0): lbzu rALT, 1(rSRC)
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2013-09-26 14:29:19 +00:00
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stbu rWORD, 1(rRTN)
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2002-09-17 23:50:03 +00:00
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cmpwi rALT, 0
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beq- L(u1)
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nop /* Let 601 load start of loop. */
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lbzu rWORD, 1(rSRC)
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2013-09-26 14:29:19 +00:00
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stbu rALT, 1(rRTN)
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2002-09-17 23:50:03 +00:00
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cmpwi rWORD, 0
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bne+ L(u0)
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2013-09-26 14:29:19 +00:00
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L(u2): stbu rWORD, 1(rRTN)
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2002-09-17 23:50:03 +00:00
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blr
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2013-09-26 14:29:19 +00:00
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L(u1): stbu rALT, 1(rRTN)
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2002-09-17 23:50:03 +00:00
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blr
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2013-09-26 14:29:19 +00:00
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END (FUNC_NAME)
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2002-09-17 23:50:03 +00:00
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2013-09-26 14:29:19 +00:00
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#ifndef USE_AS_STPCPY
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Update.
* sysdeps/i386/fpu/ftestexcept.c: Also check SSE status word.
* include/signal.h: Use libc_hidden_proto for sigaddset and sigdelset.
* signal/sigaddset.c: Add libc_hidden_def.
* signal/sigdelset.c: Likewise.
2003-04-29 Jakub Jelinek <jakub@redhat.com>
* sysdeps/i386/i486/string-inlines.c (__memcpy_g, __strchr_g): Move
to the end of the file.
* configure.in: Change __oline__ to $LINENO.
(HAVE_BUILTIN_REDIRECTION): New check.
* config.h.in (HAVE_BUILTIN_REDIRECTION): Add.
* include/libc-symbols.h (libc_hidden_builtin_proto,
libc_hidden_builtin_def, libc_hidden_builtin_weak,
libc_hidden_builtin_ver): Define.
* include/string.h (memchr, memcpy, memmove, memset, strcat, strchr,
strcmp, strcpy, strcspn, strlen, strncmp, strncpy, strpbrk, strrchr,
strspn, strstr): Add libc_hidden_builtin_proto.
* intl/plural.y: Include string.h.
* sysdeps/alpha/alphaev6/memchr.S (memchr): Add
libc_hidden_builtin_def.
* sysdeps/alpha/alphaev6/memcpy.S (memcpy): Likewise.
* sysdeps/alpha/alphaev6/memset.S (memset): Likewise.
* sysdeps/alpha/alphaev67/strcat.S (strcat): Likewise.
* sysdeps/alpha/alphaev67/strchr.S (strchr): Likewise.
* sysdeps/alpha/alphaev67/strlen.S (strlen): Likewise.
* sysdeps/alpha/alphaev67/strrchr.S (strrchr): Likewise.
* sysdeps/alpha/memchr.S (memchr): Likewise.
* sysdeps/alpha/memset.S (memset): Likewise.
* sysdeps/alpha/strcat.S (strcat): Likewise.
* sysdeps/alpha/strchr.S (strchr): Likewise.
* sysdeps/alpha/strcmp.S (strcmp): Likewise.
* sysdeps/alpha/strcpy.S (strcpy): Likewise.
* sysdeps/alpha/strlen.S (strlen): Likewise.
* sysdeps/alpha/strncmp.S (strncmp): Likewise.
* sysdeps/alpha/strncpy.S (strncpy): Likewise.
* sysdeps/alpha/strrchr.S (strrchr): Likewise.
* sysdeps/arm/memset.S (memset): Likewise.
* sysdeps/arm/strlen.S (strlen): Likewise.
* sysdeps/generic/memchr.c (memchr): Likewise.
* sysdeps/generic/memcpy.c (memcpy): Likewise.
* sysdeps/generic/memmove.c (memmove): Likewise.
* sysdeps/generic/memset.c (memset): Likewise.
* sysdeps/generic/strcat.c (strcat): Likewise.
* sysdeps/generic/strchr.c (strchr): Likewise.
* sysdeps/generic/strcmp.c (strcmp): Likewise.
* sysdeps/generic/strcpy.c (strcpy): Likewise.
* sysdeps/generic/strcspn.c (strcspn): Likewise.
* sysdeps/generic/strlen.c (strlen): Likewise.
* sysdeps/generic/strncmp.c (strncmp): Likewise.
* sysdeps/generic/strncpy.c (strncpy): Likewise.
* sysdeps/generic/strpbrk.c (strpbrk): Likewise.
* sysdeps/generic/strrchr.c (strrchr): Likewise.
* sysdeps/generic/strspn.c (strspn): Likewise.
* sysdeps/generic/strstr.c (strstr): Likewise.
* sysdeps/i386/i486/strcat.S (strcat): Likewise.
* sysdeps/i386/i486/strlen.S (strlen): Likewise.
* sysdeps/i386/i586/memcpy.S (memcpy): Likewise.
* sysdeps/i386/i586/memset.S (memset): Likewise.
* sysdeps/i386/i586/strchr.S (strchr): Likewise.
* sysdeps/i386/i586/strcpy.S (strcpy): Likewise.
* sysdeps/i386/i586/strlen.S (strlen): Likewise.
* sysdeps/i386/i686/memcpy.S (memcpy): Likewise.
* sysdeps/i386/i686/memmove.S (memmove): Likewise.
* sysdeps/i386/i686/memset.S (memset): Likewise.
* sysdeps/i386/i686/strcmp.S (strcmp): Likewise.
* sysdeps/i386/memchr.S (memchr): Likewise.
* sysdeps/i386/memset.c (memset): Likewise.
* sysdeps/i386/strchr.S (strchr): Likewise.
* sysdeps/i386/strcspn.S (strcspn): Likewise.
* sysdeps/i386/strlen.c (strlen): Likewise.
* sysdeps/i386/strpbrk.S (strpbrk): Likewise.
* sysdeps/i386/strrchr.S (strrchr): Likewise.
* sysdeps/i386/strspn.S (strspn): Likewise.
* sysdeps/ia64/memchr.S (memchr): Likewise.
* sysdeps/ia64/memcpy.S (memcpy): Likewise.
* sysdeps/ia64/memmove.S (memmove): Likewise.
* sysdeps/ia64/memset.S (memset): Likewise.
* sysdeps/ia64/strcat.S (strcat): Likewise.
* sysdeps/ia64/strchr.S (strchr): Likewise.
* sysdeps/ia64/strcmp.S (strcmp): Likewise.
* sysdeps/ia64/strcpy.S (strcpy): Likewise.
* sysdeps/ia64/strlen.S (strlen): Likewise.
* sysdeps/ia64/strncmp.S (strncmp): Likewise.
* sysdeps/ia64/strncpy.S (strncpy): Likewise.
* sysdeps/m68k/memchr.S (memchr): Likewise.
* sysdeps/m68k/strchr.S (strchr): Likewise.
* sysdeps/mips/mips64/memcpy.S (memcpy): Likewise.
* sysdeps/mips/mips64/memset.S (memset): Likewise.
* sysdeps/mips/memcpy.S (memcpy): Likewise.
* sysdeps/mips/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc32/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc32/strchr.S (strchr): Likewise.
* sysdeps/powerpc/powerpc32/strcmp.S (strcmp): Likewise.
* sysdeps/powerpc/powerpc32/strcpy.S (strcpy): Likewise.
* sysdeps/powerpc/powerpc32/strlen.S (strlen): Likewise.
* sysdeps/powerpc/powerpc64/memcpy.S (memcpy): Likewise.
* sysdeps/powerpc/powerpc64/memset.S (memset): Likewise.
* sysdeps/powerpc/powerpc64/strchr.S (strchr): Likewise.
* sysdeps/powerpc/powerpc64/strcmp.S (strcmp): Likewise.
* sysdeps/powerpc/powerpc64/strcpy.S (strcpy): Likewise.
* sysdeps/powerpc/powerpc64/strlen.S (strlen): Likewise.
* sysdeps/powerpc/strcat.c (strcat): Likewise.
* sysdeps/sparc/sparc32/memchr.S (memchr): Likewise.
* sysdeps/sparc/sparc32/memcpy.S (memcpy): Likewise.
* sysdeps/sparc/sparc32/memset.S (memset): Likewise.
* sysdeps/sparc/sparc32/strcat.S (strcat): Likewise.
* sysdeps/sparc/sparc32/strchr.S (strchr, strrchr): Likewise.
* sysdeps/sparc/sparc32/strcmp.S (strcmp): Likewise.
* sysdeps/sparc/sparc32/strcpy.S (strcpy): Likewise.
* sysdeps/sparc/sparc32/strlen.S (strlen): Likewise.
* sysdeps/sparc/sparc64/sparcv9b/memcpy.S (memcpy, memmove): Likewise.
* sysdeps/sparc/sparc64/memchr.S (memchr): Likewise.
* sysdeps/sparc/sparc64/memcpy.S (memcpy, memmove): Likewise.
* sysdeps/sparc/sparc64/memset.S (memset): Likewise.
* sysdeps/sparc/sparc64/strcat.S (strcat): Likewise.
* sysdeps/sparc/sparc64/strchr.S (strchr, strrchr): Likewise.
* sysdeps/sparc/sparc64/strcmp.S (strcmp): Likewise.
* sysdeps/sparc/sparc64/strcpy.S (strcpy): Likewise.
* sysdeps/sparc/sparc64/strcspn.S (strcspn): Likewise.
* sysdeps/sparc/sparc64/strlen.S (strlen): Likewise.
* sysdeps/sparc/sparc64/strncmp.S (strncmp): Likewise.
* sysdeps/sparc/sparc64/strncpy.S (strncpy): Likewise.
* sysdeps/sparc/sparc64/strpbrk.S (strpbrk): Likewise.
* sysdeps/sparc/sparc64/strspn.S (strspn): Likewise.
* sysdeps/sh/memcpy.S (memcpy): Likewise.
* sysdeps/sh/memset.S (memset): Likewise.
* sysdeps/sh/strlen.S (strlen): Likewise.
* sysdeps/s390/s390-32/memchr.S (memchr): Likewise.
* sysdeps/s390/s390-32/memcpy.S (memcpy): Likewise.
* sysdeps/s390/s390-32/memset.S (memset): Likewise.
* sysdeps/s390/s390-32/strcmp.S (strcmp): Likewise.
* sysdeps/s390/s390-32/strcpy.S (strcpy): Likewise.
* sysdeps/s390/s390-32/strncpy.S (strncpy): Likewise.
* sysdeps/s390/s390-64/memchr.S (memchr): Likewise.
* sysdeps/s390/s390-64/memcpy.S (memcpy): Likewise.
* sysdeps/s390/s390-64/memset.S (memset): Likewise.
* sysdeps/s390/s390-64/strcmp.S (strcmp): Likewise.
* sysdeps/s390/s390-64/strcpy.S (strcpy): Likewise.
* sysdeps/s390/s390-64/strncpy.S (strncpy): Likewise.
* sysdeps/x86_64/memcpy.S (memcpy): Likewise.
* sysdeps/x86_64/memset.S (memset): Likewise.
* sysdeps/x86_64/strcat.S (strcat): Likewise.
* sysdeps/x86_64/strchr.S (strchr): Likewise.
* sysdeps/x86_64/strcmp.S (strcmp): Likewise.
* sysdeps/x86_64/strcpy.S (strcpy): Likewise.
* sysdeps/x86_64/strcspn.S (strcspn): Likewise.
* sysdeps/x86_64/strlen.S (strlen): Likewise.
* sysdeps/x86_64/strspn.S (strspn): Likewise.
* string/string-inlines.c: Move...
* sysdeps/generic/string-inlines.c: ...here.
(__memcpy_g, __strchr_g): Remove.
(__NO_INLINE__): Define before including <string.h>,
undefine after. Include bits/string.h and bits/string2.h.
* sysdeps/i386/i486/string-inlines.c: New file.
* sysdeps/i386/string-inlines.c: New file.
* sysdeps/i386/i486/Versions: Remove.
All GLIBC_2.1.1 symbols moved...
* sysdeps/i386/Versions (libc): ...here.
2003-04-29 Ulrich Drepper <drepper@redhat.com>
2003-04-29 22:49:58 +00:00
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libc_hidden_builtin_def (strcpy)
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2013-09-26 14:29:19 +00:00
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#endif
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