| /* i80386 __mpn_submul_1 -- Multiply a limb vector with a limb and subtract |
| the result from a second limb vector. |
| Copyright (C) 1992,1994,1997,1998,2000,2005 Free Software Foundation, Inc. |
| This file is part of the GNU MP Library. |
| |
| The GNU MP Library is free software; you can redistribute it and/or modify |
| it under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2.1 of the License, or (at your |
| option) any later version. |
| |
| The GNU MP Library is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with the GNU MP Library; see the file COPYING.LIB. If not, write to |
| the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| MA 02111-1307, USA. */ |
| |
| #include "sysdep.h" |
| #include "asm-syntax.h" |
| #include "bp-sym.h" |
| #include "bp-asm.h" |
| |
| #define PARMS LINKAGE+16 /* space for 4 saved regs */ |
| #define RES PARMS |
| #define S1 RES+PTR_SIZE |
| #define SIZE S1+PTR_SIZE |
| #define S2LIMB SIZE+4 |
| |
| #define res_ptr edi |
| #define s1_ptr esi |
| #define sizeP ecx |
| #define s2_limb ebx |
| |
| .text |
| ENTRY (BP_SYM (__mpn_submul_1)) |
| ENTER |
| |
| pushl %edi |
| cfi_adjust_cfa_offset (4) |
| pushl %esi |
| cfi_adjust_cfa_offset (4) |
| pushl %ebp |
| cfi_adjust_cfa_offset (4) |
| pushl %ebx |
| cfi_adjust_cfa_offset (4) |
| cfi_rel_offset (edi, 12) |
| cfi_rel_offset (esi, 8) |
| cfi_rel_offset (ebp, 4) |
| cfi_rel_offset (ebx, 0) |
| |
| movl RES(%esp), %res_ptr |
| movl S1(%esp), %s1_ptr |
| movl SIZE(%esp), %sizeP |
| movl S2LIMB(%esp), %s2_limb |
| #if __BOUNDED_POINTERS__ |
| shll $2, %sizeP /* convert limbs to bytes */ |
| CHECK_BOUNDS_BOTH_WIDE (%res_ptr, RES(%esp), %sizeP) |
| CHECK_BOUNDS_BOTH_WIDE (%s1_ptr, S1(%esp), %sizeP) |
| shrl $2, %sizeP |
| #endif |
| leal (%res_ptr,%sizeP,4), %res_ptr |
| leal (%s1_ptr,%sizeP,4), %s1_ptr |
| negl %sizeP |
| xorl %ebp, %ebp |
| ALIGN (3) |
| L(oop): |
| movl (%s1_ptr,%sizeP,4), %eax |
| mull %s2_limb |
| addl %ebp, %eax |
| adcl $0, %edx |
| subl %eax, (%res_ptr,%sizeP,4) |
| adcl $0, %edx |
| movl %edx, %ebp |
| |
| incl %sizeP |
| jnz L(oop) |
| movl %ebp, %eax |
| |
| popl %ebx |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (ebx) |
| popl %ebp |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (ebp) |
| popl %esi |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (esi) |
| popl %edi |
| cfi_adjust_cfa_offset (-4) |
| cfi_restore (edi) |
| |
| LEAVE |
| ret |
| END (BP_SYM (__mpn_submul_1)) |
