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ff4ff35918
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
80 lines
1.8 KiB
NASM
80 lines
1.8 KiB
NASM
dnl PowerPC 750 mpn_com -- mpn bitwise one's complement
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dnl Copyright 2002, 2003 Free Software Foundation, Inc.
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dnl This file is part of the GNU MP Library.
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dnl
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dnl The GNU MP Library is free software; you can redistribute it and/or modify
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dnl it under the terms of either:
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dnl
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dnl * the GNU Lesser General Public License as published by the Free
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dnl Software Foundation; either version 3 of the License, or (at your
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dnl option) any later version.
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dnl
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dnl or
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dnl
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dnl * the GNU General Public License as published by the Free Software
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dnl Foundation; either version 2 of the License, or (at your option) any
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dnl later version.
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dnl
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dnl or both in parallel, as here.
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dnl
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dnl The GNU MP Library is distributed in the hope that it will be useful, but
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dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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dnl for more details.
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dnl
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dnl You should have received copies of the GNU General Public License and the
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dnl GNU Lesser General Public License along with the GNU MP Library. If not,
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dnl see https://www.gnu.org/licenses/.
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include(`../config.m4')
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C cycles/limb
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C 603e: ?
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C 604e: 3.0
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C 75x (G3): 2.0
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C 7400,7410 (G4): 2.0
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C 744x,745x (G4+): 3.0
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C void mpn_com (mp_ptr dst, mp_srcptr src, mp_size_t size);
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C
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C This loop form is necessary for the claimed speed.
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ASM_START()
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PROLOGUE(mpn_com)
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C r3 dst
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C r4 src
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C r5 size
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mtctr r5 C size
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lwz r5, 0(r4) C src low limb
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sub r4, r4, r3 C src-dst
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subi r3, r3, 4 C dst-4
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addi r4, r4, 8 C src-dst+8
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bdz L(one)
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L(top):
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C r3 &dst[i-1]
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C r4 src-dst
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C r5 src[i]
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C r6 scratch
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not r6, r5 C ~src[i]
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lwzx r5, r4,r3 C src[i+1]
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stwu r6, 4(r3) C dst[i]
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bdnz L(top)
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L(one):
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not r6, r5
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stw r6, 4(r3) C dst[size-1]
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blr
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EPILOGUE()
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