1/* i80386 __mpn_submul_1 -- Multiply a limb vector with a limb and subtract 2 the result from a second limb vector. 3 Copyright (C) 1992, 1994, 1997, 1998, 2000 Free Software Foundation, Inc. 4 This file is part of the GNU MP Library. 5 6 The GNU MP Library is free software; you can redistribute it and/or modify 7 it under the terms of the GNU Lesser General Public License as published by 8 the Free Software Foundation; either version 2.1 of the License, or (at your 9 option) any later version. 10 11 The GNU MP Library is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 14 License for more details. 15 16 You should have received a copy of the GNU Lesser General Public License 17 along with the GNU MP Library; see the file COPYING.LIB. If not, write to 18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, 19 MA 02111-1307, USA. */ 20 21#if 0 /* vstr */ 22#include "sysdep.h" 23#include "asm-syntax.h" 24#include "bp-sym.h" 25#include "bp-asm.h" 26#endif /* vstr */ 27 28#define PARMS LINKAGE+16 /* space for 4 saved regs */ 29#define RES PARMS 30#define S1 RES+PTR_SIZE 31#define SIZE S1+PTR_SIZE 32#define S2LIMB SIZE+4 33 34#define res_ptr edi 35#define s1_ptr esi 36#define sizeP ecx 37#define s2_limb ebx 38 39 .text 40ENTRY (BP_SYM (__mpn_submul_1)) 41 ENTER 42 43 pushl %edi 44 pushl %esi 45 pushl %ebp 46 pushl %ebx 47 48 movl RES(%esp), %res_ptr 49 movl S1(%esp), %s1_ptr 50 movl SIZE(%esp), %sizeP 51 movl S2LIMB(%esp), %s2_limb 52#if __BOUNDED_POINTERS__ 53 shll $2, %sizeP /* convert limbs to bytes */ 54 CHECK_BOUNDS_BOTH_WIDE (%res_ptr, RES(%esp), %sizeP) 55 CHECK_BOUNDS_BOTH_WIDE (%s1_ptr, S1(%esp), %sizeP) 56 shrl $2, %sizeP 57#endif 58 leal (%res_ptr,%sizeP,4), %res_ptr 59 leal (%s1_ptr,%sizeP,4), %s1_ptr 60 negl %sizeP 61 xorl %ebp, %ebp 62 ALIGN (3) 63L(oop): 64 movl (%s1_ptr,%sizeP,4), %eax 65 mull %s2_limb 66 addl %ebp, %eax 67 adcl $0, %edx 68 subl %eax, (%res_ptr,%sizeP,4) 69 adcl $0, %edx 70 movl %edx, %ebp 71 72 incl %sizeP 73 jnz L(oop) 74 movl %ebp, %eax 75 76 popl %ebx 77 popl %ebp 78 popl %esi 79 popl %edi 80 81 LEAVE 82 ret 83END (BP_SYM (__mpn_submul_1)) 84