2009-02-19 18:22:30 -05:00
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; AMD64 mpn_addlsh1_n
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; Version 1.0.3
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;
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; Copyright 2008 Jason Moxham
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2009-02-22 16:03:08 -05:00
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;
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; Windows Conversion Copyright 2008 Brian Gladman
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;
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2009-02-19 18:22:30 -05:00
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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 version 2.1 of the License, or (at
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; your option) any later version.
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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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2009-02-22 16:03:08 -05:00
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;
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; Calling interface:
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;
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; rcx[r9] = rdx[r9] + 2 * r8[r9]
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;
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; void __gmpn_addlsh1_n(
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; mp_ptr rp, rcx
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; mp_srcptr xp, rdx
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; mp_srcptr yp, r8
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; mp_size_t n, r9
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; )
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;
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; This is an SEH frame function
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%include "..\x86_64_asm.inc"
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2009-03-02 15:03:30 -05:00
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%define reg_save_list rbx, rsi, rdi
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bits 64
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section .text
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global __gmpn_addlsh1_n
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%ifdef DLL
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export __gmpn_addlsh1_n
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%endif
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prologue __gmpn_addlsh1_n, 0, reg_save_list
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mov r9d, r9d
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lea rdx, [rdx+r9*8]
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lea r8, [r8+r9*8]
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lea rcx, [rcx+r9*8]
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neg r9
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xor rsi, rsi
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xor rax, rax
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test r9, 3
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jz .2
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2009-03-02 15:03:30 -05:00
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.1: mov rdi, [r8+r9*8]
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add rsi, 1
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adc rdi, rdi
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sbb rsi, rsi
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add rax, 1
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adc rdi, [rdx+r9*8]
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sbb rax, rax
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mov [rcx+r9*8], rdi
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inc r9
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test r9, 3
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jnz .1
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.2: cmp r9, 0
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jz .4
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2009-02-26 06:11:27 -05:00
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alignb 16, nop
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.3: mov rdi, [r8+r9*8]
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mov rbx, [r8+r9*8+8]
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mov r10, [r8+r9*8+16]
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mov r11, [r8+r9*8+24]
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add rsi, 1
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adc rdi, rdi
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adc rbx, rbx
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adc r10, r10
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adc r11, r11
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sbb rsi, rsi
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add rax, 1
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adc rdi, [rdx+r9*8]
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adc rbx, [rdx+r9*8+8]
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adc r10, [rdx+r9*8+16]
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adc r11, [rdx+r9*8+24]
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sbb rax, rax
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mov [rcx+r9*8], rdi
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mov [rcx+r9*8+8], rbx
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mov [rcx+r9*8+16], r10
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mov [rcx+r9*8+24], r11
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add r9, 4
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jnz .3
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.4: add rax, rsi
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neg rax
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epilogue reg_save_list
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2009-03-02 15:03:30 -05:00
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end
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