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Diffstat (limited to 'sysdeps/powerpc/powerpc64/strcpy.S')
-rw-r--r--sysdeps/powerpc/powerpc64/strcpy.S216
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