vasilito
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.
114 lines
2.4 KiB
NASM
114 lines
2.4 KiB
NASM
dnl ARM mpn_bdiv_dbm1c.
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dnl Copyright 2008, 2011, 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 4.25
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C Cortex-A15 2.5
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C TODO
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C * Try using umlal or umaal.
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C * Try using ldm/stm.
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define(`qp', `r0')
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define(`up', `r1')
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define(`n', `r2')
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define(`bd', `r3')
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define(`cy', `sp,#0')
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ASM_START()
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TEXT
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ALIGN(16)
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PROLOGUE(mpn_bdiv_dbm1c)
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push {r4, r5, r6, r7, r8}
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ldr r4, [up], #4
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ldr r5, [sp, #20]
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ands r12, n, #3
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beq L(fi0)
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cmp r12, #2
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bcc L(fi1)
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beq L(fi2)
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L(fi3): umull r8, r12, r4, bd
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ldr r4, [up], #4
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b L(lo3)
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L(fi0): umull r6, r7, r4, bd
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ldr r4, [up], #4
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b L(lo0)
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L(fi1): subs n, n, #1
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umull r8, r12, r4, bd
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bls L(wd1)
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ldr r4, [up], #4
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b L(lo1)
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L(fi2): umull r6, r7, r4, bd
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ldr r4, [up], #4
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b L(lo2)
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L(top): ldr r4, [up], #4
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subs r5, r5, r6
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str r5, [qp], #4
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sbc r5, r5, r7
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L(lo1): umull r6, r7, r4, bd
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ldr r4, [up], #4
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subs r5, r5, r8
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str r5, [qp], #4
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sbc r5, r5, r12
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L(lo0): umull r8, r12, r4, bd
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ldr r4, [up], #4
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subs r5, r5, r6
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str r5, [qp], #4
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sbc r5, r5, r7
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L(lo3): umull r6, r7, r4, bd
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ldr r4, [up], #4
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subs r5, r5, r8
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str r5, [qp], #4
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sbc r5, r5, r12
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L(lo2): subs n, n, #4
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umull r8, r12, r4, bd
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bhi L(top)
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L(wd2): subs r5, r5, r6
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str r5, [qp], #4
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sbc r5, r5, r7
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L(wd1): subs r5, r5, r8
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str r5, [qp]
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sbc r0, r5, r12
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pop {r4, r5, r6, r7, r8}
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return lr
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EPILOGUE()
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