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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.
93 lines
2.1 KiB
NASM
93 lines
2.1 KiB
NASM
dnl ARM mpn_modexact_1c_odd
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dnl Contributed to the GNU project by Torbjörn Granlund.
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dnl Copyright 2012 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 StrongARM ?
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C XScale ?
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C Cortex-A7 ?
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C Cortex-A8 ?
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C Cortex-A9 10
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C Cortex-A15 9
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C Architecture requirements:
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C v5 -
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C v5t -
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C v5te -
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C v6 -
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C v6t2 -
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C v7a -
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define(`up', `r0')
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define(`n', `r1')
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define(`d', `r2')
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define(`cy', `r3')
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.protected binvert_limb_table
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ASM_START()
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PROLOGUE(mpn_modexact_1c_odd)
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stmfd sp!, {r4, r5}
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LEA( r4, binvert_limb_table)
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ldr r5, [up], #4 C up[0]
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and r12, d, #254
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ldrb r4, [r4, r12, lsr #1]
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mul r12, r4, r4
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mul r12, d, r12
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rsb r12, r12, r4, asl #1
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mul r4, r12, r12
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mul r4, d, r4
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rsb r4, r4, r12, asl #1 C r4 = inverse
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subs n, n, #1 C set carry as side-effect
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beq L(end)
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L(top): sbcs cy, r5, cy
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ldr r5, [up], #4
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sub n, n, #1
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mul r12, r4, cy
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tst n, n
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umull r12, cy, d, r12
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bne L(top)
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L(end): sbcs cy, r5, cy
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mul r12, r4, cy
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umull r12, r0, d, r12
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addcc r0, r0, #1
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ldmfd sp!, {r4, r5}
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return r14
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EPILOGUE()
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