1 /* Pentium __mpn_add_n -- Add two limb vectors of the same length > 0 and store
2 sum in a third limb vector.
3 Copyright (C) 1992-2013 Free Software Foundation, Inc.
4 This file is part of the GNU MP Library.
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.
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.
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,
18 see <http://www.gnu.org/licenses/>. */
21 #include "asm-syntax.h"
25 #define PARMS LINKAGE+16 /* space for 4 saved regs */
27 #define S1 RES+PTR_SIZE
28 #define S2 S1+PTR_SIZE
29 #define SIZE S2+PTR_SIZE
32 ENTRY (BP_SYM (__mpn_add_n))
36 cfi_adjust_cfa_offset (4)
38 cfi_adjust_cfa_offset (4)
40 cfi_adjust_cfa_offset (4)
42 cfi_adjust_cfa_offset (4)
45 cfi_rel_offset (edi, 12)
47 cfi_rel_offset (esi, 8)
49 cfi_rel_offset (ebx, 0)
51 #if __BOUNDED_POINTERS__
52 shll $2, %ecx /* convert limbs to bytes */
53 CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ecx)
54 CHECK_BOUNDS_BOTH_WIDE (%esi, S1(%esp), %ecx)
55 CHECK_BOUNDS_BOTH_WIDE (%ebx, S2(%esp), %ecx)
59 cfi_rel_offset (ebp, 4)
65 testl %ecx,%ecx /* zero carry flag */
68 cfi_adjust_cfa_offset (4)
71 L(oop): movl 28(%edi),%eax /* fetch destination cache line */
74 L(1): movl (%esi),%eax
83 L(2): movl 8(%esi),%eax
92 L(3): movl 16(%esi),%eax
101 L(4): movl 24(%esi),%eax
116 cfi_adjust_cfa_offset (-4)
118 decl %edx /* test %edx w/o clobbering carry */
140 cfi_adjust_cfa_offset (-4)
143 cfi_adjust_cfa_offset (-4)
146 cfi_adjust_cfa_offset (-4)
149 cfi_adjust_cfa_offset (-4)
154 END (BP_SYM (__mpn_add_n))