79 lines
1.9 KiB
NASM
79 lines
1.9 KiB
NASM
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; mpn_copyd
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; Copyright 2009 Jason Moxham
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; Windows Conversion Copyright 2008 Brian Gladman
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;
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; This file is part of the MPIR Library.
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; The MPIR Library is free software; you can redistribute it and/or modify
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; it under the terms of the GNU Lesser General Public License as published
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; by the Free Software Foundation; either verdxon 2.1 of the License, or (at
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; your option) any later verdxon.
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; The MPIR Library is distributed in the hope that it will be useful, but
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; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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; License for more details.
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; You should have received a copy of the GNU Lesser General Public License
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; along with the MPIR Library; see the file COPYING.LIB. If not, write
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; to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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; Boston, MA 02110-1301, USA.
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;
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; mpn_copyd(mp_ptr rcx,mp_ptr rdx,mp_size_t r8)
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; (rcx,r8)=(rdx,r8)
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%include "..\yasm_mac.inc"
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CPU Core2
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BITS 64
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LEAF_PROC mpn_copyd
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movsxd r8, r8d
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lea rdx, [rdx+r8*8-8]
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lea rcx, [rcx+r8*8-8]
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sub r8, 4
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jl L_skiplp
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xalign 16
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L_lp:
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mov rax, [rdx]
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mov r9, [rdx-8]
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mov r10, [rdx-16]
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mov r11, [rdx-24]
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mov [rcx], rax
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mov [rcx-8], r9
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lea rcx, [rcx-32]
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sub r8, 4
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mov [rcx+16], r10
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mov [rcx+8], r11
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lea rdx, [rdx-32]
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jns L_lp
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L_skiplp:
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add r8, 2
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jz L_case2
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jns L_case3
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jp L_case1
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L_case0:
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ret
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xalign 16
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L_case1:
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mov rax, [rdx]
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mov [rcx], rax
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ret
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xalign 16
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L_case2:
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mov rax, [rdx]
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mov r9, [rdx-8]
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mov [rcx], rax
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mov [rcx-8], r9
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ret
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xalign 16
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L_case3:
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mov rax, [rdx]
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mov r9, [rdx-8]
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mov r10, [rdx-16]
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mov [rcx], rax
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mov [rcx-8], r9
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mov [rcx-16], r10
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ret
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end
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