1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/* 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 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 Library General Public License as published by
the Free Software Foundation; either version 2 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 Library General Public
License for more details.
You should have received a copy of the GNU Library 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
pushl %esi
pushl %ebp
pushl %ebx
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
popl %ebp
popl %esi
popl %edi
LEAVE
ret
END (BP_SYM (__mpn_submul_1))
|
