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Commit | Line | Data |
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8f5ca04b RM |
1 | /* Pentium __mpn_submul_1 -- Multiply a limb vector with a limb and subtract |
2 | the result from a second limb vector. | |
0ecb606c | 3 | Copyright (C) 1992, 94, 96, 97, 98, 00, 2005 Free Software Foundation, Inc. |
5929563f | 4 | This file is part of the GNU MP Library. |
8f5ca04b | 5 | |
5929563f | 6 | The GNU MP Library is free software; you can redistribute it and/or modify |
6d84f89a AJ |
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 | |
5929563f | 9 | option) any later version. |
8f5ca04b | 10 | |
5929563f UD |
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 | |
6d84f89a | 13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
5929563f | 14 | License for more details. |
8f5ca04b | 15 | |
6d84f89a | 16 | You should have received a copy of the GNU Lesser General Public License |
5929563f UD |
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. */ | |
8f5ca04b | 20 | |
8f5ca04b RM |
21 | #include "sysdep.h" |
22 | #include "asm-syntax.h" | |
f2897624 | 23 | #include "bp-sym.h" |
43c81906 GM |
24 | #include "bp-asm.h" |
25 | ||
26 | #define PARMS LINKAGE+16 /* space for 4 saved regs */ | |
27 | #define RES PARMS | |
28 | #define S1 RES+PTR_SIZE | |
29 | #define SIZE S1+PTR_SIZE | |
30 | #define S2LIMB SIZE+4 | |
8f5ca04b RM |
31 | |
32 | #define res_ptr edi | |
33 | #define s1_ptr esi | |
34 | #define size ecx | |
f9e7bbce | 35 | #define s2_limb ebx |
8f5ca04b | 36 | |
ae828bc6 | 37 | .text |
f2897624 | 38 | ENTRY (BP_SYM (__mpn_submul_1)) |
43c81906 GM |
39 | ENTER |
40 | ||
0ecb606c JJ |
41 | pushl %res_ptr |
42 | cfi_adjust_cfa_offset (4) | |
43 | pushl %s1_ptr | |
44 | cfi_adjust_cfa_offset (4) | |
43c81906 | 45 | pushl %ebp |
0ecb606c JJ |
46 | cfi_adjust_cfa_offset (4) |
47 | pushl %s2_limb | |
48 | cfi_adjust_cfa_offset (4) | |
43c81906 GM |
49 | |
50 | movl RES(%esp), %res_ptr | |
0ecb606c | 51 | cfi_rel_offset (res_ptr, 12) |
43c81906 | 52 | movl S1(%esp), %s1_ptr |
0ecb606c | 53 | cfi_rel_offset (s1_ptr, 8) |
43c81906 GM |
54 | movl SIZE(%esp), %size |
55 | movl S2LIMB(%esp), %s2_limb | |
0ecb606c | 56 | cfi_rel_offset (s2_limb, 0) |
f2897624 GM |
57 | #if __BOUNDED_POINTERS__ |
58 | shll $2, %sizeP /* convert limbs to bytes */ | |
59 | CHECK_BOUNDS_BOTH_WIDE (%res_ptr, RES(%esp), %sizeP) | |
60 | CHECK_BOUNDS_BOTH_WIDE (%s1_ptr, S1(%esp), %sizeP) | |
61 | shrl $2, %sizeP | |
62 | #endif | |
43c81906 GM |
63 | leal (%res_ptr,%size,4), %res_ptr |
64 | leal (%s1_ptr,%size,4), %s1_ptr | |
65 | negl %size | |
f9e7bbce | 66 | xorl %ebp, %ebp |
0ecb606c | 67 | cfi_rel_offset (ebp, 4) |
8f5ca04b | 68 | ALIGN (3) |
6b628d36 | 69 | |
f9e7bbce | 70 | L(oop): adcl $0, %ebp |
43c81906 GM |
71 | movl (%s1_ptr,%size,4), %eax |
72 | ||
73 | mull %s2_limb | |
8f5ca04b | 74 | |
f9e7bbce GM |
75 | addl %ebp, %eax |
76 | movl (%res_ptr,%size,4), %ebp | |
8f5ca04b | 77 | |
43c81906 | 78 | adcl $0, %edx |
f9e7bbce | 79 | subl %eax, %ebp |
8f5ca04b | 80 | |
f9e7bbce | 81 | movl %ebp, (%res_ptr,%size,4) |
43c81906 | 82 | incl %size |
8f5ca04b | 83 | |
f9e7bbce | 84 | movl %edx, %ebp |
43c81906 | 85 | jnz L(oop) |
8f5ca04b | 86 | |
f9e7bbce GM |
87 | adcl $0, %ebp |
88 | movl %ebp, %eax | |
0ecb606c JJ |
89 | popl %s2_limb |
90 | cfi_adjust_cfa_offset (-4) | |
91 | cfi_restore (s2_limb) | |
f9e7bbce | 92 | popl %ebp |
0ecb606c JJ |
93 | cfi_adjust_cfa_offset (-4) |
94 | cfi_restore (ebp) | |
95 | popl %s1_ptr | |
96 | cfi_adjust_cfa_offset (-4) | |
97 | cfi_restore (s1_ptr) | |
98 | popl %res_ptr | |
99 | cfi_adjust_cfa_offset (-4) | |
100 | cfi_restore (res_ptr) | |
8f5ca04b | 101 | |
43c81906 | 102 | LEAVE |
8f5ca04b | 103 | ret |
ae828bc6 | 104 | #undef size |
f2897624 | 105 | END (BP_SYM (__mpn_submul_1)) |