48248cda46
2. longlong.h rearrangement for Intel compiler 3. MSVC additions in test code 4. GMP 4.2.1 bug fixes 5. Intel format assembly code
87 lines
2.4 KiB
NASM
87 lines
2.4 KiB
NASM
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; Copyright 1992, 1994, 1996, 1999, 2000, 2001, 2002 Free Software
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; Foundation, Inc.
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;
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; This file is part of the GNU MP Library.
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;
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; The GNU MP Library is free software; you can redistribute it and/or
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; modify it under the terms of the GNU Lesser General Public License as
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; published by the Free Software Foundation; either version 2.1 of the
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; License, or (at your option) any later version.
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;
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; The GNU MP Library is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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; Lesser General Public License for more details.
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;
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; You should have received a copy of the GNU Lesser General Public
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; License along with the GNU MP Library; see the file COPYING.LIB. If
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; not, write to the Free Software Foundation, Inc., 59 Temple Place -
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; Suite 330, Boston, MA 02111-1307, USA.
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;
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; Translation of AT&T syntax code by Brian Gladman
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%include "x86i.inc"
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%define PARAM_SHIFT esp+frame+16
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%define PARAM_SIZE esp+frame+12
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%define PARAM_SRC esp+frame+8
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%define PARAM_DST esp+frame+4
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section .text
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global ___gmpn_lshift
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%ifdef DLL
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export ___gmpn_lshift
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%endif
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align 8
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___gmpn_lshift:
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push edi
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push esi
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push ebx
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%assign frame frame+12
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mov edi,[PARAM_DST]
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mov esi,[PARAM_SRC]
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mov edx,[PARAM_SIZE]
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mov ecx,[PARAM_SHIFT]
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sub esi,4 ; adjust src
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mov ebx,[esi+edx*4] ; read most significant limb
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xor eax,eax
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shld eax,ebx,cl
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dec edx
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jz Lend
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push eax ; push carry limb onto stack
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test dl,1
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jnz L1 ; enter Lop in the middle
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mov eax,ebx
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align 8
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Lop:
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mov ebx,[esi+edx*4] ; load next lower limb
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shld eax,ebx,cl
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mov [edi+edx*4],eax ; store it
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dec edx
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L1:
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mov eax,[esi+edx*4]
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shld ebx,eax,cl
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mov [edi+edx*4],ebx
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dec edx
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jnz Lop
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shl eax,cl ; compute least significant limb
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mov [edi],eax ; store it
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pop eax ; pop carry limb
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pop ebx
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pop esi
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pop edi
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ret
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Lend:
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shl ebx,cl ; compute least significant limb
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mov [edi],ebx ; store it
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pop ebx
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pop esi
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pop edi
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ret
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end
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