Move powerpc ports pieces to libc.

7 files changed, 854 insertions, 0 deletions

diff --git a/sysdeps/powerpc/powerpc32/405/memcmp.S b/sysdeps/powerpc/powerpc32/405/memcmp.S
new file mode 100644
index 0000000000..2849461cd7
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/405/memcmp.S
@@ -0,0 +1,128 @@
+/* Optimized memcmp implementation for PowerPC476.
+   Copyright (C) 2010-2013 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>
+
+/* memcmp
+
+       r3:source1 address, return equality
+       r4:source2 address
+       r5:byte count
+
+       Check 2 words from src1 and src2. If unequal jump to end and
+       return src1 > src2 or src1 < src2.
+       If count = zero check bytes before zero counter and then jump to end and
+       return src1 > src2, src1 < src2 or src1 = src2.
+       If src1 = src2 and no null, repeat. */
+
+EALIGN (memcmp, 5, 0)
+       srwi.   r6,r5,5
+       beq     L(preword2_count_loop)
+       mtctr   r6
+       clrlwi  r5,r5,27
+
+L(word8_compare_loop):
+       lwz     r10,0(r3)
+       lwz     r6,4(r3)
+       lwz     r8,0(r4)
+       lwz     r9,4(r4)
+       cmplw   cr5,r8,r10
+       cmplw   cr1,r9,r6
+       bne     cr5,L(st2)
+       bne     cr1,L(st1)
+       lwz     r10,8(r3)
+       lwz     r6,12(r3)
+       lwz     r8,8(r4)
+       lwz     r9,12(r4)
+       cmplw   cr5,r8,r10
+       cmplw   cr1,r9,r6
+       bne     cr5,L(st2)
+       bne     cr1,L(st1)
+       lwz     r10,16(r3)
+       lwz     r6,20(r3)
+       lwz     r8,16(r4)
+       lwz     r9,20(r4)
+       cmplw   cr5,r8,r10
+       cmplw   cr1,r9,r6
+       bne     cr5,L(st2)
+       bne     cr1,L(st1)
+       lwz     r10,24(r3)
+       lwz     r6,28(r3)
+       addi    r3,r3,0x20
+       lwz     r8,24(r4)
+       lwz     r9,28(r4)
+       addi    r4,r4,0x20
+       cmplw   cr5,r8,r10
+       cmplw   cr1,r9,r6
+       bne     cr5,L(st2)
+       bne     cr1,L(st1)
+       bdnz    L(word8_compare_loop)
+
+L(preword2_count_loop):
+       srwi.   r6,r5,3
+       beq     L(prebyte_count_loop)
+       mtctr   r6
+       clrlwi  r5,r5,29
+
+L(word2_count_loop):
+       lwz     r10,0(r3)
+       lwz     r6,4(r3)
+       addi    r3,r3,0x08
+       lwz     r8,0(r4)
+       lwz     r9,4(r4)
+       addi    r4,r4,0x08
+       cmplw   cr5,r8,r10
+       cmplw   cr1,r9,r6
+       bne     cr5,L(st2)
+       bne     cr1,L(st1)
+       bdnz    L(word2_count_loop)
+
+L(prebyte_count_loop):
+       addi    r5,r5,1
+       mtctr   r5
+       bdz     L(end_memcmp)
+
+L(byte_count_loop):
+       lbz     r6,0(r3)
+       addi    r3,r3,0x01
+       lbz     r8,0(r4)
+       addi    r4,r4,0x01
+       cmplw   cr5,r8,r6
+       bne     cr5,L(st2)
+       bdnz    L(byte_count_loop)
+
+L(end_memcmp):
+       addi    r3,r0,0
+       blr
+
+L(l_r):
+       addi    r3,r0,1
+       blr
+
+L(st1):
+       blt     cr1,L(l_r)
+       addi    r3,r0,-1
+       blr
+
+L(st2):
+       blt     cr5,L(l_r)
+       addi    r3,r0,-1
+       blr
+END (memcmp)
+libc_hidden_builtin_def (memcmp)
+weak_alias (memcmp,bcmp)
diff --git a/sysdeps/powerpc/powerpc32/405/memcpy.S b/sysdeps/powerpc/powerpc32/405/memcpy.S
new file mode 100644
index 0000000000..b01d539209
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/405/memcpy.S
@@ -0,0 +1,130 @@
+/* Optimized memcpy implementation for PowerPC476.
+   Copyright (C) 2010-2013 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>
+
+/* memcpy
+
+       r0:return address
+       r3:destination address
+       r4:source address
+       r5:byte count
+
+       Save return address in r0.
+       If destinationn and source are unaligned and copy count is greater than 256
+       then copy 0-3 bytes to make destination aligned.
+       If 32 or more bytes to copy we use 32 byte copy loop.
+       Finaly we copy 0-31 extra bytes. */
+
+EALIGN (memcpy, 5, 0)
+/* Check if bytes to copy are greater than 256 and if
+       source and destination are unaligned */
+       cmpwi   r5,0x0100
+       addi    r0,r3,0
+       ble     L(string_count_loop)
+       neg     r6,r3
+       clrlwi. r6,r6,30
+       beq     L(string_count_loop)
+       neg     r6,r4
+       clrlwi. r6,r6,30
+       beq     L(string_count_loop)
+       mtctr   r6
+       subf    r5,r6,r5
+
+L(unaligned_bytecopy_loop): /* Align destination by coping 0-3 bytes */
+       lbz     r8,0x0(r4)
+       addi    r4,r4,1
+       stb     r8,0x0(r3)
+       addi    r3,r3,1
+       bdnz    L(unaligned_bytecopy_loop)
+       srwi.   r7,r5,5
+       beq     L(preword2_count_loop)
+       mtctr   r7
+
+L(word8_count_loop_no_dcbt): /* Copy 32 bytes at a time */
+       lwz     r6,0(r4)
+       lwz     r7,4(r4)
+       lwz     r8,8(r4)
+       lwz     r9,12(r4)
+       subi    r5,r5,0x20
+       stw     r6,0(r3)
+       stw     r7,4(r3)
+       stw     r8,8(r3)
+       stw     r9,12(r3)
+       lwz     r6,16(r4)
+       lwz     r7,20(r4)
+       lwz     r8,24(r4)
+       lwz     r9,28(r4)
+       addi    r4,r4,0x20
+       stw     r6,16(r3)
+       stw     r7,20(r3)
+       stw     r8,24(r3)
+       stw     r9,28(r3)
+       addi    r3,r3,0x20
+       bdnz    L(word8_count_loop_no_dcbt)
+
+L(preword2_count_loop): /* Copy remaining 0-31 bytes */
+       clrlwi. r12,r5,27
+       beq     L(end_memcpy)
+       mtxer   r12
+       lswx    r5,0,r4
+       stswx   r5,0,r3
+       mr       r3,r0
+       blr
+
+L(string_count_loop): /* Copy odd 0-31 bytes */
+       clrlwi. r12,r5,28
+       add     r3,r3,r5
+       add     r4,r4,r5
+       beq     L(pre_string_copy)
+       mtxer   r12
+       subf    r4,r12,r4
+       subf    r3,r12,r3
+       lswx    r6,0,r4
+       stswx   r6,0,r3
+
+L(pre_string_copy): /* Check how many 32 byte chunks to copy */
+       srwi.   r7,r5,4
+       beq     L(end_memcpy)
+       mtctr   r7
+
+L(word4_count_loop_no_dcbt): /* Copy 32 bytes at a time */
+       lwz     r6,-4(r4)
+       lwz     r7,-8(r4)
+       lwz     r8,-12(r4)
+       lwzu    r9,-16(r4)
+       stw     r6,-4(r3)
+       stw     r7,-8(r3)
+       stw     r8,-12(r3)
+       stwu    r9,-16(r3)
+       bdz     L(end_memcpy)
+       lwz     r6,-4(r4)
+       lwz     r7,-8(r4)
+       lwz     r8,-12(r4)
+       lwzu    r9,-16(r4)
+       stw     r6,-4(r3)
+       stw     r7,-8(r3)
+       stw     r8,-12(r3)
+       stwu    r9,-16(r3)
+       bdnz    L(word4_count_loop_no_dcbt)
+
+L(end_memcpy):
+       mr       r3,r0
+       blr
+END (memcpy)
+libc_hidden_builtin_def (memcpy)
diff --git a/sysdeps/powerpc/powerpc32/405/memset.S b/sysdeps/powerpc/powerpc32/405/memset.S
new file mode 100644
index 0000000000..b73dba8873
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/405/memset.S
@@ -0,0 +1,152 @@
+/* Optimized memset for PowerPC405,440,464 (32-byte cacheline).
+   Copyright (C) 2012-2013 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>
+
+/* memset
+
+       r3:destination address and return address
+       r4:source integer to copy
+       r5:byte count
+       r11:sources integer to copy in all 32 bits of reg
+       r12:temp return address
+
+       Save return address in r12
+       If destinationn is unaligned and count is greater tha 255 bytes
+       set 0-3 bytes to make destination aligned
+       If count is greater tha 255 bytes and setting zero to memory
+       use dbcz to set memeory when we can
+       otherwsie do the follwoing
+       If 16 or more words to set we use 16 word copy loop.
+       Finaly we set 0-15 extra bytes with string store. */
+
+EALIGN (memset, 5, 0)
+       rlwinm  r11,r4,0,24,31
+       rlwimi  r11,r4,8,16,23
+       rlwimi  r11,r11,16,0,15
+       addi    r12,r3,0
+       cmpwi   r5,0x00FF
+       ble     L(preword8_count_loop)
+       cmpwi   r4,0x00
+       beq     L(use_dcbz)
+       neg     r6,r3
+       clrlwi. r6,r6,30
+       beq     L(preword8_count_loop)
+       addi    r8,0,1
+       mtctr   r6
+       subi    r3,r3,1
+
+L(unaligned_bytecopy_loop):
+       stbu    r11,0x1(r3)
+       subf.   r5,r8,r5
+       beq     L(end_memset)
+       bdnz    L(unaligned_bytecopy_loop)
+       addi    r3,r3,1
+
+L(preword8_count_loop):
+       srwi.   r6,r5,4
+       beq     L(preword2_count_loop)
+       mtctr   r6
+       addi    r3,r3,-4
+       mr      r8,r11
+       mr      r9,r11
+       mr      r10,r11
+
+L(word8_count_loop_no_dcbt):
+       stwu    r8,4(r3)
+       stwu    r9,4(r3)
+       subi    r5,r5,0x10
+       stwu    r10,4(r3)
+       stwu    r11,4(r3)
+       bdnz    L(word8_count_loop_no_dcbt)
+       addi    r3,r3,4
+
+L(preword2_count_loop):
+       clrlwi. r7,r5,28
+       beq     L(end_memset)
+       mr      r8,r11
+       mr      r9,r11
+       mr      r10,r11
+       mtxer   r7
+       stswx   r8,0,r3
+
+L(end_memset):
+       addi    r3,r12,0
+       blr
+
+L(use_dcbz):
+       neg     r6,r3
+       clrlwi. r7,r6,28
+       beq     L(skip_string_loop)
+       mr      r8,r11
+       mr      r9,r11
+       mr      r10,r11
+       subf    r5,r7,r5
+       mtxer   r7
+       stswx   r8,0,r3
+       add     r3,r3,r7
+
+L(skip_string_loop):
+       clrlwi  r8,r6,27
+       srwi.   r8,r8,4
+       beq     L(dcbz_pre_loop)
+       mtctr   r8
+
+L(word_loop):
+       stw     r11,0(r3)
+       subi    r5,r5,0x10
+       stw     r11,4(r3)
+       stw     r11,8(r3)
+       stw     r11,12(r3)
+       addi    r3,r3,0x10
+       bdnz    L(word_loop)
+
+L(dcbz_pre_loop):
+       srwi    r6,r5,5
+       mtctr   r6
+       addi    r7,0,0
+
+L(dcbz_loop):
+       dcbz    r3,r7
+       addi    r3,r3,0x20
+       subi    r5,r5,0x20
+       bdnz    L(dcbz_loop)
+       srwi.   r6,r5,4
+       beq     L(postword2_count_loop)
+       mtctr   r6
+
+L(postword8_count_loop):
+       stw     r11,0(r3)
+       subi    r5,r5,0x10
+       stw     r11,4(r3)
+       stw     r11,8(r3)
+       stw     r11,12(r3)
+       addi    r3,r3,0x10
+       bdnz    L(postword8_count_loop)
+
+L(postword2_count_loop):
+       clrlwi. r7,r5,28
+       beq     L(end_memset)
+       mr      r8,r11
+       mr      r9,r11
+       mr      r10,r11
+       mtxer   r7
+       stswx   r8,0,r3
+       b       L(end_memset)
+END (memset)
+libc_hidden_builtin_def (memset)
diff --git a/sysdeps/powerpc/powerpc32/405/strcmp.S b/sysdeps/powerpc/powerpc32/405/strcmp.S
new file mode 100644
index 0000000000..c0b21907be
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/405/strcmp.S
@@ -0,0 +1,134 @@
+/* Optimized strcmp implementation for PowerPC476.
+   Copyright (C) 2010-2013 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>
+
+/* strcmp
+
+       Register Use
+       r0:temp return equality
+       r3:source1 address, return equality
+       r4:source2 address
+
+       Implementation description
+       Check 2 words from src1 and src2. If unequal jump to end and
+       return src1 > src2 or src1 < src2.
+       If null check bytes before null and then jump to end and
+       return src1 > src2, src1 < src2 or src1 = src2.
+       If src1 = src2 and no null, repeat. */
+
+EALIGN (strcmp,5,0)
+       neg     r7,r3
+       clrlwi  r7,r7,20
+       neg     r8,r4
+       clrlwi  r8,r8,20
+       srwi.   r7,r7,5
+       beq     L(byte_loop)
+       srwi.   r8,r8,5
+       beq     L(byte_loop)
+       cmplw   r7,r8
+       mtctr   r7
+       ble     L(big_loop)
+       mtctr   r8
+
+L(big_loop):
+       lwz     r5,0(r3)
+       lwz     r6,4(r3)
+       lwz     r8,0(r4)
+       lwz     r9,4(r4)
+       dlmzb.  r12,r5,r6
+       bne     L(end_check)
+       cmplw   r5,r8
+       bne     L(st1)
+       cmplw   r6,r9
+       bne     L(st1)
+       lwz     r5,8(r3)
+       lwz     r6,12(r3)
+       lwz     r8,8(r4)
+       lwz     r9,12(r4)
+       dlmzb.  r12,r5,r6
+       bne     L(end_check)
+       cmplw   r5,r8
+       bne     L(st1)
+       cmplw   r6,r9
+       bne     L(st1)
+       lwz     r5,16(r3)
+       lwz     r6,20(r3)
+       lwz     r8,16(r4)
+       lwz     r9,20(r4)
+       dlmzb.  r12,r5,r6
+       bne     L(end_check)
+       cmplw   r5,r8
+       bne     L(st1)
+       cmplw   r6,r9
+       bne     L(st1)
+       lwz     r5,24(r3)
+       lwz     r6,28(r3)
+       addi    r3,r3,0x20
+       lwz     r8,24(r4)
+       lwz     r9,28(r4)
+       addi    r4,r4,0x20
+       dlmzb.  r12,r5,r6
+       bne     L(end_check)
+       cmplw   r5,r8
+       bne     L(st1)
+       cmplw   r6,r9
+       bne     L(st1)
+       bdnz    L(big_loop)
+       b       L(byte_loop)
+
+L(end_check):
+       subfic  r12,r12,4
+       blt     L(end_check2)
+       rlwinm  r12,r12,3,0,31
+       srw     r5,r5,r12
+       srw     r8,r8,r12
+       cmplw   r5,r8
+       bne     L(st1)
+       b       L(end_strcmp)
+
+L(end_check2):
+       addi    r12,r12,4
+       cmplw   r5,r8
+       rlwinm  r12,r12,3,0,31
+       bne     L(st1)
+       srw     r6,r6,r12
+       srw     r9,r9,r12
+       cmplw   r6,r9
+       bne     L(st1)
+
+L(end_strcmp):
+       addi    r3,r0,0
+       blr
+
+L(st1):
+       mfcr    r3
+       blr
+
+L(byte_loop):
+       lbz     r5,0(r3)
+       addi    r3,r3,1
+       lbz     r6,0(r4)
+       addi    r4,r4,1
+       cmplw   r5,r6
+       bne     L(st1)
+       cmpwi   r5,0
+       beq     L(end_strcmp)
+       b       L(byte_loop)
+END (strcmp)
+libc_hidden_builtin_def (strcmp)
diff --git a/sysdeps/powerpc/powerpc32/405/strcpy.S b/sysdeps/powerpc/powerpc32/405/strcpy.S
new file mode 100644
index 0000000000..d7c84569d9
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/405/strcpy.S
@@ -0,0 +1,107 @@
+/* Optimized strcpy implementation for PowerPC476.
+   Copyright (C) 2010-2013 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>
+
+/* strcpy
+
+       Register Use
+       r3:destination and return address
+       r4:source address
+       r10:temp destination address
+
+       Implementation description
+       Loop by checking 2 words at a time, with dlmzb. Check if there is a null
+       in the 2 words. If there is a null jump to end checking to determine
+       where in the last 8 bytes it is. Copy the appropriate bytes of the last
+       8 according to the null position. */
+
+EALIGN (strcpy, 5, 0)
+       neg     r7,r4
+       subi    r4,r4,1
+       clrlwi. r8,r7,29
+       subi    r10,r3,1
+       beq     L(pre_word8_loop)
+       mtctr   r8
+
+L(loop):
+       lbzu    r5,0x01(r4)
+       cmpi    cr5,r5,0x0
+       stbu    r5,0x01(r10)
+       beq     cr5,L(end_strcpy)
+       bdnz    L(loop)
+
+L(pre_word8_loop):
+       subi    r4,r4,3
+       subi    r10,r10,3
+
+L(word8_loop):
+       lwzu    r5,0x04(r4)
+       lwzu    r6,0x04(r4)
+       dlmzb.  r11,r5,r6
+       bne     L(byte_copy)
+       stwu    r5,0x04(r10)
+       stwu    r6,0x04(r10)
+       lwzu    r5,0x04(r4)
+       lwzu    r6,0x04(r4)
+       dlmzb.  r11,r5,r6
+       bne     L(byte_copy)
+       stwu    r5,0x04(r10)
+       stwu    r6,0x04(r10)
+       lwzu    r5,0x04(r4)
+       lwzu    r6,0x04(r4)
+       dlmzb.  r11,r5,r6
+       bne     L(byte_copy)
+       stwu    r5,0x04(r10)
+       stwu    r6,0x04(r10)
+       lwzu    r5,0x04(r4)
+       lwzu    r6,0x04(r4)
+       dlmzb.  r11,r5,r6
+       bne     L(byte_copy)
+       stwu    r5,0x04(r10)
+       stwu    r6,0x04(r10)
+       b       L(word8_loop)
+
+L(last_bytes_copy):
+       stwu    r5,0x04(r10)
+       subi    r11,r11,4
+       mtctr   r11
+       addi    r10,r10,3
+       subi    r4,r4,1
+
+L(last_bytes_copy_loop):
+       lbzu    r5,0x01(r4)
+       stbu    r5,0x01(r10)
+       bdnz    L(last_bytes_copy_loop)
+       blr
+
+L(byte_copy):
+       blt     L(last_bytes_copy)
+       mtctr   r11
+       addi    r10,r10,3
+       subi    r4,r4,5
+
+L(last_bytes_copy_loop2):
+       lbzu    r5,0x01(r4)
+       stbu    r5,0x01(r10)
+       bdnz    L(last_bytes_copy_loop2)
+
+L(end_strcpy):
+       blr
+END (strcpy)
+libc_hidden_builtin_def (strcpy)
diff --git a/sysdeps/powerpc/powerpc32/405/strlen.S b/sysdeps/powerpc/powerpc32/405/strlen.S
new file mode 100644
index 0000000000..77d22ea673
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/405/strlen.S
@@ -0,0 +1,75 @@
+/* Optimized strlen implementation for PowerPC476.
+   Copyright (C) 2010-2013 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>
+
+/* strlen
+
+       Register Use
+       r3:source address and return length of string
+       r4:byte counter
+
+       Implementation description
+       Load 2 words at a time and count bytes, if we find null we subtract one from
+       the count and return the count value. We need to subtract one because
+       we don't count the null character as a byte. */
+
+EALIGN (strlen,5,0)
+       neg     r7,r3
+       clrlwi. r8,r7,29
+       addi    r4,0,0
+       beq     L(byte_count_loop)
+       mtctr   r8
+
+L(loop):
+       lbz     r5,0(r3)
+       cmpi    cr5,r5,0x0
+       addi    r3,r3,0x1
+       addi    r4,r4,0x1
+       beq     cr5,L(end_strlen)
+       bdnz    L(loop)
+
+L(byte_count_loop):
+       lwz     r5,0(r3)
+       lwz     r6,4(r3)
+       dlmzb.  r12,r5,r6
+       add     r4,r4,r12
+       bne     L(end_strlen)
+       lwz     r5,8(r3)
+       lwz     r6,12(r3)
+       dlmzb.  r12,r5,r6
+       add     r4,r4,r12
+       bne     L(end_strlen)
+       lwz     r5,16(r3)
+       lwz     r6,20(r3)
+       dlmzb.  r12,r5,r6
+       add     r4,r4,r12
+       bne     L(end_strlen)
+       lwz     r5,24(r3)
+       lwz     r6,28(r3)
+       addi    r3,r3,0x20
+       dlmzb.  r12,r5,r6
+       add     r4,r4,r12
+       bne     L(end_strlen)
+       b       L(byte_count_loop)
+
+L(end_strlen):
+       addi    r3,r4,-1
+       blr
+END (strlen)
+libc_hidden_builtin_def (strlen)
diff --git a/sysdeps/powerpc/powerpc32/405/strncmp.S b/sysdeps/powerpc/powerpc32/405/strncmp.S
new file mode 100644
index 0000000000..3e2ba5f855
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/405/strncmp.S
@@ -0,0 +1,128 @@
+/* Optimized strncmp implementation for PowerPC476.
+   Copyright (C) 2010-2013 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>
+
+/* strncmp
+
+       Register Use
+       r0:temp return equality
+       r3:source1 address, return equality
+       r4:source2 address
+       r5:byte count
+
+       Implementation description
+       Touch in 3 lines of D-cache.
+       If source1 or source2 is unaligned copy 0-3 bytes to make source1 aligned
+       Check 2 words from src1 and src2. If unequal jump to end and
+       return src1 > src2 or src1 < src2.
+       If null check bytes before null and then jump to end and
+       return src1 > src2, src1 < src2 or src1 = src2.
+       If count = zero check bytes before zero counter and then jump to end and
+       return src1 > src2, src1 < src2 or src1 = src2.
+       If src1 = src2 and no null, repeat. */
+
+EALIGN (strncmp,5,0)
+       neg     r7,r3
+       clrlwi  r7,r7,20
+       neg     r8,r4
+       clrlwi  r8,r8,20
+       srwi.   r7,r7,3
+       beq     L(prebyte_count_loop)
+       srwi.   r8,r8,3
+       beq     L(prebyte_count_loop)
+       cmplw   r7,r8
+       mtctr   r7
+       ble     L(preword2_count_loop)
+       mtctr   r8
+
+L(preword2_count_loop):
+       srwi.   r6,r5,3
+       beq     L(prebyte_count_loop)
+       mfctr   r7
+       cmplw   r6,r7
+       bgt     L(set_count_loop)
+       mtctr   r6
+       clrlwi  r5,r5,29
+
+L(word2_count_loop):
+       lwz     r10,0(r3)
+       lwz     r6,4(r3)
+       addi    r3,r3,0x08
+       lwz     r8,0(r4)
+       lwz     r9,4(r4)
+       addi    r4,r4,0x08
+       dlmzb.  r12,r10,r6
+       bne     L(end_check)
+       cmplw   r10,r8
+       bne     L(st1)
+       cmplw   r6,r9
+       bne     L(st1)
+       bdnz    L(word2_count_loop)
+
+L(prebyte_count_loop):
+       addi    r5,r5,1
+       mtctr   r5
+       bdz     L(end_strncmp)
+
+L(byte_count_loop):
+       lbz     r6,0(r3)
+       addi    r3,r3,1
+       lbz     r7,0(r4)
+       addi    r4,r4,1
+       cmplw   r6,r7
+       bne     L(st1)
+       cmpwi   r6,0
+       beq     L(end_strncmp)
+       bdnz    L(byte_count_loop)
+       b       L(end_strncmp)
+
+L(set_count_loop):
+       slwi    r7,r7,3
+       subf    r5,r7,r5
+       b       L(word2_count_loop)
+
+L(end_check):
+       subfic  r12,r12,4
+       blt     L(end_check2)
+       rlwinm  r12,r12,3,0,31
+       srw     r10,r10,r12
+       srw     r8,r8,r12
+       cmplw   r10,r8
+       bne     L(st1)
+       b       L(end_strncmp)
+
+L(end_check2):
+       addi    r12,r12,4
+       cmplw   r10,r8
+       rlwinm  r12,r12,3,0,31
+       bne     L(st1)
+       srw     r6,r6,r12
+       srw     r9,r9,r12
+       cmplw   r6,r9
+       bne     L(st1)
+
+L(end_strncmp):
+       addi    r3,r0,0
+       blr
+
+L(st1):
+       mfcr    r3
+       blr
+END (strncmp)
+libc_hidden_builtin_def (strncmp)