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-rw-r--r--sysdeps/powerpc/powerpc32/power7/memcpy.S538
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diff --git a/sysdeps/powerpc/powerpc32/power7/memcpy.S b/sysdeps/powerpc/powerpc32/power7/memcpy.S
deleted file mode 100644
index 8e33c1d733..0000000000
--- a/sysdeps/powerpc/powerpc32/power7/memcpy.S
+++ /dev/null
@@ -1,538 +0,0 @@
-/* Optimized memcpy implementation for PowerPC32/POWER7.
- Copyright (C) 2010-2017 Free Software Foundation, Inc.
- Contributed by Luis Machado <luisgpm@br.ibm.com>.
- 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>
-
-/* __ptr_t [r3] memcpy (__ptr_t dst [r3], __ptr_t src [r4], size_t len [r5]);
- Returns 'dst'. */
-
- .machine power7
-EALIGN (memcpy, 5, 0)
- CALL_MCOUNT
-
- stwu 1,-32(1)
- cfi_adjust_cfa_offset(32)
- stw 30,20(1)
- cfi_offset(30,(20-32))
- stw 31,24(1)
- mr 30,3
- cmplwi cr1,5,31
- neg 0,3
- cfi_offset(31,-8)
- ble cr1, L(copy_LT_32) /* If move < 32 bytes use short move
- code. */
-
- andi. 11,3,15 /* Check alignment of DST. */
- clrlwi 10,4,28 /* Check alignment of SRC. */
- cmplw cr6,10,11 /* SRC and DST alignments match? */
- mr 12,4
- mr 31,5
- bne cr6,L(copy_GE_32_unaligned)
-
- srwi 9,5,3 /* Number of full quadwords remaining. */
-
- beq L(copy_GE_32_aligned_cont)
-
- clrlwi 0,0,29
- mtcrf 0x01,0
- subf 31,0,5
-
- /* Get the SRC aligned to 8 bytes. */
-
-1: bf 31,2f
- lbz 6,0(12)
- addi 12,12,1
- stb 6,0(3)
- addi 3,3,1
-2: bf 30,4f
- lhz 6,0(12)
- addi 12,12,2
- sth 6,0(3)
- addi 3,3,2
-4: bf 29,0f
- lwz 6,0(12)
- addi 12,12,4
- stw 6,0(3)
- addi 3,3,4
-0:
- clrlwi 10,12,29 /* Check alignment of SRC again. */
- srwi 9,31,3 /* Number of full doublewords remaining. */
-
-L(copy_GE_32_aligned_cont):
-
- clrlwi 11,31,29
- mtcrf 0x01,9
-
- srwi 8,31,5
- cmplwi cr1,9,4
- cmplwi cr6,11,0
- mr 11,12
-
- /* Copy 1~3 doublewords so the main loop starts
- at a multiple of 32 bytes. */
-
- bf 30,1f
- lfd 6,0(12)
- lfd 7,8(12)
- addi 11,12,16
- mtctr 8
- stfd 6,0(3)
- stfd 7,8(3)
- addi 10,3,16
- bf 31,4f
- lfd 0,16(12)
- stfd 0,16(3)
- blt cr1,3f
- addi 11,12,24
- addi 10,3,24
- b 4f
-
- .align 4
-1: /* Copy 1 doubleword and set the counter. */
- mr 10,3
- mtctr 8
- bf 31,4f
- lfd 6,0(12)
- addi 11,12,8
- stfd 6,0(3)
- addi 10,3,8
-
-L(aligned_copy):
- /* Main aligned copy loop. Copies up to 128-bytes at a time. */
- .align 4
-4:
- /* check for any 32-byte or 64-byte lumps that are outside of a
- nice 128-byte range. R8 contains the number of 32-byte
- lumps, so drop this into the CR, and use the SO/EQ bits to help
- handle the 32- or 64- byte lumps. Then handle the rest with an
- unrolled 128-bytes-at-a-time copy loop. */
- mtocrf 1,8
- li 6,16 # 16() index
- li 7,32 # 32() index
- li 8,48 # 48() index
-
-L(aligned_32byte):
- /* if the SO bit (indicating a 32-byte lump) is not set, move along. */
- bns cr7,L(aligned_64byte)
- lxvd2x 6,0,11
- lxvd2x 7,11,6
- addi 11,11,32
- stxvd2x 6,0,10
- stxvd2x 7,10,6
- addi 10,10,32
-
-L(aligned_64byte):
- /* if the EQ bit (indicating a 64-byte lump) is not set, move along. */
- bne cr7,L(aligned_128setup)
- lxvd2x 6,0,11
- lxvd2x 7,11,6
- lxvd2x 8,11,7
- lxvd2x 9,11,8
- addi 11,11,64
- stxvd2x 6,0,10
- stxvd2x 7,10,6
- stxvd2x 8,10,7
- stxvd2x 9,10,8
- addi 10,10,64
-
-L(aligned_128setup):
- /* Set up for the 128-byte at a time copy loop. */
- srwi 8,31,7
- cmpwi 8,0 # Any 4x lumps left?
- beq 3f # if not, move along.
- lxvd2x 6,0,11
- lxvd2x 7,11,6
- mtctr 8 # otherwise, load the ctr and begin.
- li 8,48 # 48() index
- b L(aligned_128loop)
-
-L(aligned_128head):
- /* for the 2nd + iteration of this loop. */
- lxvd2x 6,0,11
- lxvd2x 7,11,6
-L(aligned_128loop):
- lxvd2x 8,11,7
- lxvd2x 9,11,8
- stxvd2x 6,0,10
- addi 11,11,64
- stxvd2x 7,10,6
- stxvd2x 8,10,7
- stxvd2x 9,10,8
- lxvd2x 6,0,11
- lxvd2x 7,11,6
- addi 10,10,64
- lxvd2x 8,11,7
- lxvd2x 9,11,8
- addi 11,11,64
- stxvd2x 6,0,10
- stxvd2x 7,10,6
- stxvd2x 8,10,7
- stxvd2x 9,10,8
- addi 10,10,64
- bdnz L(aligned_128head)
-
-3:
- /* Check for tail bytes. */
- clrrwi 0,31,3
- mtcrf 0x01,31
- beq cr6,0f
-
-.L9:
- add 3,3,0
- add 12,12,0
-
- /* At this point we have a tail of 0-7 bytes and we know that the
- destination is doubleword-aligned. */
-4: /* Copy 4 bytes. */
- bf 29,2f
-
- lwz 6,0(12)
- addi 12,12,4
- stw 6,0(3)
- addi 3,3,4
-2: /* Copy 2 bytes. */
- bf 30,1f
-
- lhz 6,0(12)
- addi 12,12,2
- sth 6,0(3)
- addi 3,3,2
-1: /* Copy 1 byte. */
- bf 31,0f
-
- lbz 6,0(12)
- stb 6,0(3)
-0: /* Return original DST pointer. */
- mr 3,30
- lwz 30,20(1)
- lwz 31,24(1)
- addi 1,1,32
- blr
-
- /* Handle copies of 0~31 bytes. */
- .align 4
-L(copy_LT_32):
- cmplwi cr6,5,8
- mr 12,4
- mtcrf 0x01,5
- ble cr6,L(copy_LE_8)
-
- /* At least 9 bytes to go. */
- neg 8,4
- clrrwi 11,4,2
- andi. 0,8,3
- cmplwi cr1,5,16
- mr 10,5
- beq L(copy_LT_32_aligned)
-
- /* Force 4-bytes alignment for SRC. */
- mtocrf 0x01,0
- subf 10,0,5
-2: bf 30,1f
-
- lhz 6,0(12)
- addi 12,12,2
- sth 6,0(3)
- addi 3,3,2
-1: bf 31,L(end_4bytes_alignment)
-
- lbz 6,0(12)
- addi 12,12,1
- stb 6,0(3)
- addi 3,3,1
-
- .align 4
-L(end_4bytes_alignment):
- cmplwi cr1,10,16
- mtcrf 0x01,10
-
-L(copy_LT_32_aligned):
- /* At least 6 bytes to go, and SRC is word-aligned. */
- blt cr1,8f
-
- /* Copy 16 bytes. */
- lwz 6,0(12)
- lwz 7,4(12)
- stw 6,0(3)
- lwz 8,8(12)
- stw 7,4(3)
- lwz 6,12(12)
- addi 12,12,16
- stw 8,8(3)
- stw 6,12(3)
- addi 3,3,16
-8: /* Copy 8 bytes. */
- bf 28,4f
-
- lwz 6,0(12)
- lwz 7,4(12)
- addi 12,12,8
- stw 6,0(3)
- stw 7,4(3)
- addi 3,3,8
-4: /* Copy 4 bytes. */
- bf 29,2f
-
- lwz 6,0(12)
- addi 12,12,4
- stw 6,0(3)
- addi 3,3,4
-2: /* Copy 2-3 bytes. */
- bf 30,1f
-
- lhz 6,0(12)
- sth 6,0(3)
- bf 31,0f
- lbz 7,2(12)
- stb 7,2(3)
-
- /* Return original DST pointer. */
- mr 3,30
- lwz 30,20(1)
- addi 1,1,32
- blr
-
- .align 4
-1: /* Copy 1 byte. */
- bf 31,0f
-
- lbz 6,0(12)
- stb 6,0(3)
-0: /* Return original DST pointer. */
- mr 3,30
- lwz 30,20(1)
- addi 1,1,32
- blr
-
- /* Handles copies of 0~8 bytes. */
- .align 4
-L(copy_LE_8):
- bne cr6,4f
-
- /* Though we could've used lfd/stfd here, they are still
- slow for unaligned cases. */
-
- lwz 6,0(4)
- lwz 7,4(4)
- stw 6,0(3)
- stw 7,4(3)
-
- /* Return original DST pointer. */
- mr 3,30
- lwz 30,20(1)
- addi 1,1,32
- blr
-
- .align 4
-4: /* Copies 4~7 bytes. */
- bf 29,2b
-
- lwz 6,0(4)
- stw 6,0(3)
- bf 30,5f
- lhz 7,4(4)
- sth 7,4(3)
- bf 31,0f
- lbz 8,6(4)
- stb 8,6(3)
-
- /* Return original DST pointer. */
- mr 3,30
- lwz 30,20(1)
- addi 1,1,32
- blr
-
- .align 4
-5: /* Copy 1 byte. */
- bf 31,0f
-
- lbz 6,4(4)
- stb 6,4(3)
-
-0: /* Return original DST pointer. */
- mr 3,30
- lwz 30,20(1)
- addi 1,1,32
- blr
-
- /* Handle copies of 32+ bytes where DST is aligned (to quadword) but
- SRC is not. Use aligned quadword loads from SRC, shifted to realign
- the data, allowing for aligned DST stores. */
- .align 4
-L(copy_GE_32_unaligned):
- andi. 11,3,15 /* Check alignment of DST. */
- clrlwi 0,0,28 /* Number of bytes until the 1st
- quadword of DST. */
- srwi 9,5,4 /* Number of full quadwords remaining. */
-
- beq L(copy_GE_32_unaligned_cont)
-
- /* DST is not quadword aligned, get it aligned. */
-
- mtcrf 0x01,0
- subf 31,0,5
-
- /* Vector instructions work best when proper alignment (16-bytes)
- is present. Move 0~15 bytes as needed to get DST quadword-aligned. */
-1: /* Copy 1 byte. */
- bf 31,2f
-
- lbz 6,0(12)
- addi 12,12,1
- stb 6,0(3)
- addi 3,3,1
-2: /* Copy 2 bytes. */
- bf 30,4f
-
- lhz 6,0(12)
- addi 12,12,2
- sth 6,0(3)
- addi 3,3,2
-4: /* Copy 4 bytes. */
- bf 29,8f
-
- lwz 6,0(12)
- addi 12,12,4
- stw 6,0(3)
- addi 3,3,4
-8: /* Copy 8 bytes. */
- bf 28,0f
-
- lfd 6,0(12)
- addi 12,12,8
- stfd 6,0(3)
- addi 3,3,8
-0:
- clrlwi 10,12,28 /* Check alignment of SRC. */
- srwi 9,31,4 /* Number of full quadwords remaining. */
-
- /* The proper alignment is present, it is OK to copy the bytes now. */
-L(copy_GE_32_unaligned_cont):
-
- /* Setup two indexes to speed up the indexed vector operations. */
- clrlwi 11,31,28
- li 6,16 /* Index for 16-bytes offsets. */
- li 7,32 /* Index for 32-bytes offsets. */
- cmplwi cr1,11,0
- srwi 8,31,5 /* Setup the loop counter. */
- mr 10,3
- mr 11,12
- mtcrf 0x01,9
- cmplwi cr6,9,1
-#ifdef __LITTLE_ENDIAN__
- lvsr 5,0,12
-#else
- lvsl 5,0,12
-#endif
- lvx 3,0,12
- bf 31,L(setup_unaligned_loop)
-
- /* Copy another 16 bytes to align to 32-bytes due to the loop . */
- lvx 4,12,6
-#ifdef __LITTLE_ENDIAN__
- vperm 6,4,3,5
-#else
- vperm 6,3,4,5
-#endif
- addi 11,12,16
- addi 10,3,16
- stvx 6,0,3
- vor 3,4,4
-
-L(setup_unaligned_loop):
- mtctr 8
- ble cr6,L(end_unaligned_loop)
-
- /* Copy 32 bytes at a time using vector instructions. */
- .align 4
-L(unaligned_loop):
-
- /* Note: vr6/vr10 may contain data that was already copied,
- but in order to get proper alignment, we may have to copy
- some portions again. This is faster than having unaligned
- vector instructions though. */
-
- lvx 4,11,6 /* vr4 = r11+16. */
-#ifdef __LITTLE_ENDIAN__
- vperm 6,4,3,5
-#else
- vperm 6,3,4,5
-#endif
- lvx 3,11,7 /* vr3 = r11+32. */
-#ifdef __LITTLE_ENDIAN__
- vperm 10,3,4,5
-#else
- vperm 10,4,3,5
-#endif
- addi 11,11,32
- stvx 6,0,10
- stvx 10,10,6
- addi 10,10,32
-
- bdnz L(unaligned_loop)
-
- .align 4
-L(end_unaligned_loop):
-
- /* Check for tail bytes. */
- clrrwi 0,31,4
- mtcrf 0x01,31
- beq cr1,0f
-
- add 3,3,0
- add 12,12,0
-
- /* We have 1~15 tail bytes to copy, and DST is quadword aligned. */
-8: /* Copy 8 bytes. */
- bf 28,4f
-
- lwz 6,0(12)
- lwz 7,4(12)
- addi 12,12,8
- stw 6,0(3)
- stw 7,4(3)
- addi 3,3,8
-4: /* Copy 4 bytes. */
- bf 29,2f
-
- lwz 6,0(12)
- addi 12,12,4
- stw 6,0(3)
- addi 3,3,4
-2: /* Copy 2~3 bytes. */
- bf 30,1f
-
- lhz 6,0(12)
- addi 12,12,2
- sth 6,0(3)
- addi 3,3,2
-1: /* Copy 1 byte. */
- bf 31,0f
-
- lbz 6,0(12)
- stb 6,0(3)
-0: /* Return original DST pointer. */
- mr 3,30
- lwz 30,20(1)
- lwz 31,24(1)
- addi 1,1,32
- blr
-
-END (memcpy)
-libc_hidden_builtin_def (memcpy)
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