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8f5ca04b RM |
1 | /* Pentium __mpn_mul_1 -- Multiply a limb vector with a limb and store |
2 | the result in a second limb vector. | |
5929563f UD |
3 | Copyright (C) 1992, 1994, 1996, 1997 Free Software Foundation, Inc. |
4 | This file is part of the GNU MP Library. | |
8f5ca04b | 5 | |
5929563f UD |
6 | The GNU MP Library is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU Library General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or (at your | |
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 | |
13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public | |
14 | License for more details. | |
8f5ca04b | 15 | |
5929563f UD |
16 | You should have received a copy of the GNU Library 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. */ | |
8f5ca04b RM |
20 | |
21 | /* | |
22 | INPUT PARAMETERS | |
23 | res_ptr (sp + 4) | |
24 | s1_ptr (sp + 8) | |
25 | size (sp + 12) | |
26 | s2_limb (sp + 16) | |
27 | */ | |
28 | ||
29 | #include "sysdep.h" | |
30 | #include "asm-syntax.h" | |
31 | ||
32 | #define res_ptr edi | |
33 | #define s1_ptr esi | |
34 | #define size ecx | |
35 | #define s2_limb ebp | |
36 | ||
37 | TEXT | |
38 | ALIGN (3) | |
39 | GLOBL C_SYMBOL_NAME(__mpn_mul_1) | |
40 | C_SYMBOL_NAME(__mpn_mul_1:) | |
41 | ||
42 | INSN1(push,l ,R(edi)) | |
43 | INSN1(push,l ,R(esi)) | |
44 | INSN1(push,l ,R(ebx)) | |
45 | INSN1(push,l ,R(ebp)) | |
46 | ||
47 | INSN2(mov,l ,R(res_ptr),MEM_DISP(esp,20)) | |
48 | INSN2(mov,l ,R(s1_ptr),MEM_DISP(esp,24)) | |
49 | INSN2(mov,l ,R(size),MEM_DISP(esp,28)) | |
50 | INSN2(mov,l ,R(s2_limb),MEM_DISP(esp,32)) | |
51 | ||
52 | INSN2(lea,l ,R(res_ptr),MEM_INDEX(res_ptr,size,4)) | |
53 | INSN2(lea,l ,R(s1_ptr),MEM_INDEX(s1_ptr,size,4)) | |
54 | INSN1(neg,l ,R(size)) | |
6b628d36 | 55 | INSN2(xor,l ,R(ebx),R(ebx)) |
8f5ca04b | 56 | ALIGN (3) |
6b628d36 | 57 | |
5929563f | 58 | L(oop): INSN2(adc,l ,R(ebx),$0) |
8f5ca04b RM |
59 | INSN2(mov,l ,R(eax),MEM_INDEX(s1_ptr,size,4)) |
60 | ||
61 | INSN1(mul,l ,R(s2_limb)) | |
62 | ||
6b628d36 | 63 | INSN2(add,l ,R(ebx),R(eax)) |
8f5ca04b | 64 | |
6b628d36 | 65 | INSN2(mov,l ,MEM_INDEX(res_ptr,size,4),R(ebx)) |
8f5ca04b | 66 | INSN1(inc,l ,R(size)) |
8f5ca04b | 67 | |
6b628d36 | 68 | INSN2(mov,l ,R(ebx),R(edx)) |
5929563f | 69 | INSN1(jnz, ,L(oop)) |
8f5ca04b | 70 | |
6b628d36 RM |
71 | INSN2(adc,l ,R(ebx),$0) |
72 | INSN2(mov,l ,R(eax),R(ebx)) | |
8f5ca04b RM |
73 | INSN1(pop,l ,R(ebp)) |
74 | INSN1(pop,l ,R(ebx)) | |
75 | INSN1(pop,l ,R(esi)) | |
76 | INSN1(pop,l ,R(edi)) | |
77 | ret |