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I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
177 lines
3.2 KiB
ArmAsm
177 lines
3.2 KiB
ArmAsm
/* Optimized memcpy implementation for cached memory on PowerPC64/POWER8.
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Copyright (C) 2017-2021 Free Software Foundation, Inc.
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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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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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/* __ptr_t [r3] memcpy (__ptr_t dst [r3], __ptr_t src [r4], size_t len [r5]);
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Returns 'dst'. */
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.machine power8
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ENTRY_TOCLESS (__memcpy_power8_cached, 5)
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CALL_MCOUNT 3
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cmpldi cr7,r5,15
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bgt cr7,L(ge_16)
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andi. r9,r5,0x1
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mr r9,r3
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beq cr0,1f
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lbz r10,0(r4)
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addi r9,r3,1
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addi r4,r4,1
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stb r10,0(r3)
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1:
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andi. r10,r5,0x2
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beq cr0,2f
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lhz r10,0(r4)
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addi r9,r9,2
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addi r4,r4,2
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sth r10,-2(r9)
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2:
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andi. r10,r5,0x4
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beq cr0,3f
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lwz r10,0(r4)
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addi r9,9,4
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addi r4,4,4
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stw r10,-4(r9)
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3:
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andi. r10,r5,0x8
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beqlr cr0
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ld r10,0(r4)
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std r10,0(r9)
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blr
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.align 4
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L(ge_16):
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cmpldi cr7,r5,32
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ble cr7,L(ge_16_le_32)
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cmpldi cr7,r5,64
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ble cr7,L(gt_32_le_64)
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/* Align dst to 16 bytes. */
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andi. r9,r3,0xf
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mr r12,r3
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beq cr0,L(dst_is_align_16)
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lxvd2x v0,0,r4
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subfic r12,r9,16
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subf r5,r12,r5
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add r4,r4,r12
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add r12,r3,r12
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stxvd2x v0,0,r3
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L(dst_is_align_16):
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cmpldi cr7,r5,127
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ble cr7,L(tail_copy)
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mr r9,r12
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srdi r10,r5,7
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li r11,16
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li r6,32
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li r7,48
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mtctr r10
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clrrdi r0,r5,7
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/* Main loop, copy 128 bytes each time. */
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.align 4
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L(copy_128):
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lxvd2x v10,0,r4
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lxvd2x v11,r4,r11
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addi r8,r4,64
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addi r10,r9,64
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lxvd2x v12,r4,r6
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lxvd2x v0,r4,r7
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addi r4,r4,128
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stxvd2x v10,0,r9
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stxvd2x v11,r9,r11
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stxvd2x v12,r9,r6
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stxvd2x v0,r9,r7
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addi r9,r9,128
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lxvd2x v10,0,r8
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lxvd2x v11,r8,r11
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lxvd2x v12,r8,r6
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lxvd2x v0,r8,r7
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stxvd2x v10,0,r10
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stxvd2x v11,r10,r11
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stxvd2x v12,r10,r6
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stxvd2x v0,r10,r7
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bdnz L(copy_128)
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add r12,r12,r0
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rldicl r5,r5,0,57
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L(tail_copy):
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cmpldi cr7,r5,63
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ble cr7,L(tail_le_64)
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li r8,16
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li r10,32
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lxvd2x v10,0,r4
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li r9,48
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addi r5,r5,-64
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lxvd2x v11,r4,r8
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lxvd2x v12,r4,r10
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lxvd2x v0,r4,r9
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addi r4,r4,64
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stxvd2x v10,0,r12
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stxvd2x v11,r12,r8
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stxvd2x v12,r12,r10
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stxvd2x v0,r12,9
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addi r12,r12,64
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L(tail_le_64):
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cmpldi cr7,r5,32
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bgt cr7,L(tail_gt_32_le_64)
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cmpdi cr7,r5,0
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beqlr cr7
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addi r5,r5,-32
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li r9,16
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add r8,r4,r5
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add r10,r12,r5
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lxvd2x v12,r4,r5
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lxvd2x v0,r8,r9
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stxvd2x v12,r12,r5
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stxvd2x v0,r10,r9
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blr
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.align 4
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L(ge_16_le_32):
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addi r5,r5,-16
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lxvd2x v0,0,r4
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lxvd2x v1,r4,r5
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stxvd2x v0,0,r3
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stxvd2x v1,r3,r5
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blr
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.align 4
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L(gt_32_le_64):
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mr r12,r3
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.align 4
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L(tail_gt_32_le_64):
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li r9,16
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lxvd2x v0,0,r4
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addi r5,r5,-32
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lxvd2x v1,r4,r9
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add r8,r4,r5
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lxvd2x v2,r4,r5
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add r10,r12,r5
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lxvd2x v3,r8,r9
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stxvd2x v0,0,r12
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stxvd2x v1,r12,r9
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stxvd2x v2,r12,r5
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stxvd2x v3,r10,r9
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blr
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END_GEN_TB (__memcpy_power8_cached,TB_TOCLESS)
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