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.
130 lines
2.6 KiB
NASM
130 lines
2.6 KiB
NASM
dnl x86 mpn_bdiv_dbm1.
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dnl Copyright 2008, 2011 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 P5
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C P6 model 0-8,10-12)
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C P6 model 9 (Banias)
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C P6 model 13 (Dothan) 5.1
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C P4 model 0 (Willamette)
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C P4 model 1 (?)
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C P4 model 2 (Northwood) 13.67
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C P4 model 3 (Prescott)
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C P4 model 4 (Nocona)
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C Intel Atom
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C AMD K6
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C AMD K7 3.5
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C AMD K8
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C AMD K10
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C TODO
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C * Optimize for more x86 processors
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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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mov 16(%esp), %ecx C d
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push %esi
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mov 12(%esp), %esi C ap
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push %edi
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mov 12(%esp), %edi C qp
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push %ebp
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mov 24(%esp), %ebp C n
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push %ebx
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mov (%esi), %eax
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mul %ecx
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mov 36(%esp), %ebx
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sub %eax, %ebx
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mov %ebx, (%edi)
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sbb %edx, %ebx
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mov %ebp, %eax
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and $3, %eax
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jz L(b0)
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cmp $2, %eax
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jc L(b1)
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jz L(b2)
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L(b3): lea -8(%esi), %esi
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lea 8(%edi), %edi
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add $-3, %ebp
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jmp L(3)
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L(b0): mov 4(%esi), %eax
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lea -4(%esi), %esi
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lea 12(%edi), %edi
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add $-4, %ebp
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jmp L(0)
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L(b2): mov 4(%esi), %eax
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lea 4(%esi), %esi
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lea 4(%edi), %edi
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add $-2, %ebp
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jmp L(2)
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ALIGN(8)
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L(top): mov 4(%esi), %eax
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mul %ecx
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lea 16(%edi), %edi
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sub %eax, %ebx
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mov 8(%esi), %eax
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mov %ebx, -12(%edi)
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sbb %edx, %ebx
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L(0): mul %ecx
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sub %eax, %ebx
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mov %ebx, -8(%edi)
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sbb %edx, %ebx
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L(3): mov 12(%esi), %eax
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mul %ecx
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sub %eax, %ebx
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mov %ebx, -4(%edi)
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mov 16(%esi), %eax
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lea 16(%esi), %esi
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sbb %edx, %ebx
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L(2): mul %ecx
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sub %eax, %ebx
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mov %ebx, 0(%edi)
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sbb %edx, %ebx
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L(b1): add $-4, %ebp
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jns L(top)
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mov %ebx, %eax
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pop %ebx
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pop %ebp
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pop %edi
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pop %esi
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ret
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EPILOGUE()
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