66 lines
1.7 KiB
NASM
66 lines
1.7 KiB
NASM
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dnl mpn_xor_n
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dnl Copyright 2009 Jason Moxham
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dnl This file is part of the MPIR Library.
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dnl The MPIR Library is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU Lesser General Public License as published
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dnl by the Free Software Foundation; either version 2.1 of the License, or (at
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dnl your option) any later version.
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dnl The MPIR 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 Lesser General Public
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dnl License for more details.
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dnl You should have received a copy of the GNU Lesser General Public License
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dnl along with the MPIR Library; see the file COPYING.LIB. If not, write
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dnl to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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dnl Boston, MA 02110-1301, USA.
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include(`../config.m4')
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C ret mpn_xor_n(mp_ptr,mp_ptr,mp_ptr,mp_size_t)
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C rax rdi, rsi, rdx, rcx
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ASM_START()
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PROLOGUE(mpn_xor_n)
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sub $4,%rcx
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jc skiplp
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ALIGN(16)
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lp:
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mov (%rdx),%r8
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mov 8(%rdx),%r9
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xor (%rsi),%r8
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xor 8(%rsi),%r9
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lea 32(%rsi),%rsi
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mov 16(%rdx),%r10
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mov 24(%rdx),%r11
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lea 32(%rdi),%rdi
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xor 16-32(%rsi),%r10
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xor 24-32(%rsi),%r11
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sub $4,%rcx
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mov %r8,-32(%rdi)
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mov %r9,8-32(%rdi)
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mov %r10,16-32(%rdi)
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lea 32(%rdx),%rdx
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mov %r11,24-32(%rdi)
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jnc lp
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skiplp:
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cmp $-2,%rcx
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je case2
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jp case1
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jl case0
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case3: mov 8(%rdx,%rcx,8),%rax
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xor 8(%rsi,%rcx,8),%rax
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mov %rax,8(%rdi,%rcx,8)
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case2: mov 16(%rdx,%rcx,8),%rax
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xor 16(%rsi,%rcx,8),%rax
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mov %rax,16(%rdi,%rcx,8)
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case1: mov 24(%rdx,%rcx,8),%rax
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xor 24(%rsi,%rcx,8),%rax
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mov %rax,24(%rdi,%rcx,8)
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case0: ret
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EPILOGUE()
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