aorslsh1_n.asm
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上传日期:2022-08-06
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- dnl x86-64 mpn_addlsh1_n and mpn_sublsh1_n, optimized for "Core" 2.
- dnl Copyright 2008 Free Software Foundation, Inc.
- dnl This file is part of the GNU MP Library.
- dnl The GNU MP Library is free software; you can redistribute it and/or modify
- dnl it under the terms of the GNU Lesser General Public License as published
- dnl by the Free Software Foundation; either version 3 of the License, or (at
- dnl your option) any later version.
- dnl The GNU MP Library is distributed in the hope that it will be useful, but
- dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- dnl License for more details.
- dnl You should have received a copy of the GNU Lesser General Public License
- dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
- include(`../config.m4')
- C cycles/limb
- C K8,K9: 4.25
- C K10: ?
- C P4: ?
- C P6-15: 3
- C INPUT PARAMETERS
- define(`rp',`%rdi')
- define(`up',`%rsi')
- define(`vp',`%rdx')
- define(`n', `%rcx')
- ifdef(`OPERATION_addlsh1_n', `
- define(ADDSUB, add)
- define(ADCSBB, adc)
- define(func, mpn_addlsh1_n)')
- ifdef(`OPERATION_sublsh1_n', `
- define(ADDSUB, sub)
- define(ADCSBB, sbb)
- define(func, mpn_sublsh1_n)')
- MULFUNC_PROLOGUE(mpn_addlsh1_n mpn_sublsh1_n)
- ASM_START()
- TEXT
- ALIGN(8)
- PROLOGUE(func)
- push %rbx
- push %r12
- mov R32(%rcx), R32(%rax)
- lea 24(up,n,8), up
- lea 24(vp,n,8), vp
- lea 24(rp,n,8), rp
- neg n
- xor R32(%r11), R32(%r11)
- mov -24(vp,n,8), %r8 C do first limb early
- shrd $63, %r8, %r11
- and $3, R32(%rax)
- je L(b0)
- cmp $2, R32(%rax)
- jc L(b1)
- je L(b2)
- L(b3): mov -16(vp,n,8), %r9
- shrd $63, %r9, %r8
- mov -8(vp,n,8), %r10
- shrd $63, %r10, %r9
- mov -24(up,n,8), %r12
- ADDSUB %r11, %r12
- mov %r12, -24(rp,n,8)
- mov -16(up,n,8), %r12
- ADCSBB %r8, %r12
- mov %r12, -16(rp,n,8)
- mov -8(up,n,8), %r12
- ADCSBB %r9, %r12
- mov %r12, -8(rp,n,8)
- mov %r10, %r11
- sbb R32(%rax), R32(%rax) C save cy
- add $3, n
- js L(top)
- jmp L(end)
- L(b1): mov -24(up,n,8), %r12
- ADDSUB %r11, %r12
- mov %r12, -24(rp,n,8)
- mov %r8, %r11
- sbb R32(%rax), R32(%rax) C save cy
- inc n
- js L(top)
- jmp L(end)
- L(b2): mov -16(vp,n,8), %r9
- shrd $63, %r9, %r8
- mov -24(up,n,8), %r12
- ADDSUB %r11, %r12
- mov %r12, -24(rp,n,8)
- mov -16(up,n,8), %r12
- ADCSBB %r8, %r12
- mov %r12, -16(rp,n,8)
- mov %r9, %r11
- sbb R32(%rax), R32(%rax) C save cy
- add $2, n
- js L(top)
- jmp L(end)
- ALIGN(16)
- L(top): mov -24(vp,n,8), %r8
- shrd $63, %r8, %r11
- L(b0): mov -16(vp,n,8), %r9
- shrd $63, %r9, %r8
- mov -8(vp,n,8), %r10
- shrd $63, %r10, %r9
- mov (vp,n,8), %rbx
- shrd $63, %rbx, %r10
- add R32(%rax), R32(%rax) C restore cy
- mov -24(up,n,8), %r12
- ADCSBB %r11, %r12
- mov %r12, -24(rp,n,8)
- mov -16(up,n,8), %r12
- ADCSBB %r8, %r12
- mov %r12, -16(rp,n,8)
- mov -8(up,n,8), %r12
- ADCSBB %r9, %r12
- mov %r12, -8(rp,n,8)
- mov (up,n,8), %r12
- ADCSBB %r10, %r12
- mov %r12, (rp,n,8)
- mov %rbx, %r11
- sbb R32(%rax), R32(%rax) C save cy
- add $4, n
- js L(top)
- L(end): add %r11, %r11
- pop %r12
- pop %rbx
- sbb $0, R32(%rax)
- neg R32(%rax)
- ret
- EPILOGUE()