URL https://opencores.org/ocsvn/or1k_old/or1k_old/trunk

Subversion Repositories or1k_old

[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [i386/] [math-emu/] [mul_Xsig.S] - Blame information for rev 1765

Go to most recent revision | Details | Compare with Previous | View Log


/*---------------------------------------------------------------------------+
 |  mul_Xsig.S                                                               |
 |                                                                           |
 | Multiply a 12 byte fixed point number by another fixed point number.      |
 |                                                                           |
 | Copyright (C) 1992,1994,1995                                              |
 |                       W. Metzenthen, 22 Parker St, Ormond, Vic 3163,      |
 |                       Australia.  E-mail billm@jacobi.maths.monash.edu.au |
 |                                                                           |
 | Call from C as:                                                           |
 |   void mul32_Xsig(Xsig *x, unsigned b)                                    |
 |                                                                           |
 |   void mul64_Xsig(Xsig *x, unsigned long long *b)                         |
 |                                                                           |
 |   void mul_Xsig_Xsig(Xsig *x, unsigned *b)                                |
 |                                                                           |
 | The result is neither rounded nor normalized, and the ls bit or so may    |
 | be wrong.                                                                 |
 |                                                                           |
 +---------------------------------------------------------------------------*/
        .file   "mul_Xsig.S"
 
 
#include "fpu_emu.h"
 
.text
ENTRY(mul32_Xsig)
        pushl %ebp
        movl %esp,%ebp
        subl $16,%esp
        pushl %esi
 
        movl PARAM1,%esi
        movl PARAM2,%ecx
 
        xor %eax,%eax
        movl %eax,-4(%ebp)
        movl %eax,-8(%ebp)
 
        movl (%esi),%eax        /* lsl of Xsig */
        mull %ecx               /* msl of b */
        movl %edx,-12(%ebp)
 
        movl 4(%esi),%eax       /* midl of Xsig */
        mull %ecx               /* msl of b */
        addl %eax,-12(%ebp)
        adcl %edx,-8(%ebp)
        adcl $0,-4(%ebp)
 
        movl 8(%esi),%eax       /* msl of Xsig */
        mull %ecx               /* msl of b */
        addl %eax,-8(%ebp)
        adcl %edx,-4(%ebp)
 
        movl -12(%ebp),%eax
        movl %eax,(%esi)
        movl -8(%ebp),%eax
        movl %eax,4(%esi)
        movl -4(%ebp),%eax
        movl %eax,8(%esi)
 
        popl %esi
        leave
        ret
 
 
ENTRY(mul64_Xsig)
        pushl %ebp
        movl %esp,%ebp
        subl $16,%esp
        pushl %esi
 
        movl PARAM1,%esi
        movl PARAM2,%ecx
 
        xor %eax,%eax
        movl %eax,-4(%ebp)
        movl %eax,-8(%ebp)
 
        movl (%esi),%eax        /* lsl of Xsig */
        mull 4(%ecx)            /* msl of b */
        movl %edx,-12(%ebp)
 
        movl 4(%esi),%eax       /* midl of Xsig */
        mull (%ecx)             /* lsl of b */
        addl %edx,-12(%ebp)
        adcl $0,-8(%ebp)
        adcl $0,-4(%ebp)
 
        movl 4(%esi),%eax       /* midl of Xsig */
        mull 4(%ecx)            /* msl of b */
        addl %eax,-12(%ebp)
        adcl %edx,-8(%ebp)
        adcl $0,-4(%ebp)
 
        movl 8(%esi),%eax       /* msl of Xsig */
        mull (%ecx)             /* lsl of b */
        addl %eax,-12(%ebp)
        adcl %edx,-8(%ebp)
        adcl $0,-4(%ebp)
 
        movl 8(%esi),%eax       /* msl of Xsig */
        mull 4(%ecx)            /* msl of b */
        addl %eax,-8(%ebp)
        adcl %edx,-4(%ebp)
 
        movl -12(%ebp),%eax
        movl %eax,(%esi)
        movl -8(%ebp),%eax
        movl %eax,4(%esi)
        movl -4(%ebp),%eax
        movl %eax,8(%esi)
 
        popl %esi
        leave
        ret
 
 
 
ENTRY(mul_Xsig_Xsig)
        pushl %ebp
        movl %esp,%ebp
        subl $16,%esp
        pushl %esi
 
        movl PARAM1,%esi
        movl PARAM2,%ecx
 
        xor %eax,%eax
        movl %eax,-4(%ebp)
        movl %eax,-8(%ebp)
 
        movl (%esi),%eax        /* lsl of Xsig */
        mull 8(%ecx)            /* msl of b */
        movl %edx,-12(%ebp)
 
        movl 4(%esi),%eax       /* midl of Xsig */
        mull 4(%ecx)            /* midl of b */
        addl %edx,-12(%ebp)
        adcl $0,-8(%ebp)
        adcl $0,-4(%ebp)
 
        movl 8(%esi),%eax       /* msl of Xsig */
        mull (%ecx)             /* lsl of b */
        addl %edx,-12(%ebp)
        adcl $0,-8(%ebp)
        adcl $0,-4(%ebp)
 
        movl 4(%esi),%eax       /* midl of Xsig */
        mull 8(%ecx)            /* msl of b */
        addl %eax,-12(%ebp)
        adcl %edx,-8(%ebp)
        adcl $0,-4(%ebp)
 
        movl 8(%esi),%eax       /* msl of Xsig */
        mull 4(%ecx)            /* midl of b */
        addl %eax,-12(%ebp)
        adcl %edx,-8(%ebp)
        adcl $0,-4(%ebp)
 
        movl 8(%esi),%eax       /* msl of Xsig */
        mull 8(%ecx)            /* msl of b */
        addl %eax,-8(%ebp)
        adcl %edx,-4(%ebp)
 
        movl -12(%ebp),%edx
        movl %edx,(%esi)
        movl -8(%ebp),%edx
        movl %edx,4(%esi)
        movl -4(%ebp),%edx
        movl %edx,8(%esi)
 
        popl %esi
        leave
        ret
 

Line No.	Rev	Author	Line
1	1623	jcastillo	`/*---------------------------------------------------------------------------+`
2			`\| mul_Xsig.S \|`
3			`\| \|`
4			`\| Multiply a 12 byte fixed point number by another fixed point number. \|`
5			`\| \|`
6			`\| Copyright (C) 1992,1994,1995 \|`
7			`\| W. Metzenthen, 22 Parker St, Ormond, Vic 3163, \|`
8			`\| Australia. E-mail billm@jacobi.maths.monash.edu.au \|`
9			`\| \|`
10			`\| Call from C as: \|`
11			`\| void mul32_Xsig(Xsig *x, unsigned b) \|`
12			`\| \|`
13			`\| void mul64_Xsig(Xsig x, unsigned long long b) \|`
14			`\| \|`
15			`\| void mul_Xsig_Xsig(Xsig x, unsigned b) \|`
16			`\| \|`
17			`\| The result is neither rounded nor normalized, and the ls bit or so may \|`
18			`\| be wrong. \|`
19			`\| \|`
20			`+---------------------------------------------------------------------------*/`
21			`.file "mul_Xsig.S"`
22
23
24			`#include "fpu_emu.h"`
25
26			`.text`
27			`ENTRY(mul32_Xsig)`
28			`pushl %ebp`
29			`movl %esp,%ebp`
30			`subl $16,%esp`
31			`pushl %esi`
32
33			`movl PARAM1,%esi`
34			`movl PARAM2,%ecx`
35
36			`xor %eax,%eax`
37			`movl %eax,-4(%ebp)`
38			`movl %eax,-8(%ebp)`
39
40			`movl (%esi),%eax /* lsl of Xsig */`
41			`mull %ecx /* msl of b */`
42			`movl %edx,-12(%ebp)`
43
44			`movl 4(%esi),%eax /* midl of Xsig */`
45			`mull %ecx /* msl of b */`
46			`addl %eax,-12(%ebp)`
47			`adcl %edx,-8(%ebp)`
48			`adcl $0,-4(%ebp)`
49
50			`movl 8(%esi),%eax /* msl of Xsig */`
51			`mull %ecx /* msl of b */`
52			`addl %eax,-8(%ebp)`
53			`adcl %edx,-4(%ebp)`
54
55			`movl -12(%ebp),%eax`
56			`movl %eax,(%esi)`
57			`movl -8(%ebp),%eax`
58			`movl %eax,4(%esi)`
59			`movl -4(%ebp),%eax`
60			`movl %eax,8(%esi)`
61
62			`popl %esi`
63			`leave`
64			`ret`
65
66
67			`ENTRY(mul64_Xsig)`
68			`pushl %ebp`
69			`movl %esp,%ebp`
70			`subl $16,%esp`
71			`pushl %esi`
72
73			`movl PARAM1,%esi`
74			`movl PARAM2,%ecx`
75
76			`xor %eax,%eax`
77			`movl %eax,-4(%ebp)`
78			`movl %eax,-8(%ebp)`
79
80			`movl (%esi),%eax /* lsl of Xsig */`
81			`mull 4(%ecx) /* msl of b */`
82			`movl %edx,-12(%ebp)`
83
84			`movl 4(%esi),%eax /* midl of Xsig */`
85			`mull (%ecx) /* lsl of b */`
86			`addl %edx,-12(%ebp)`
87			`adcl $0,-8(%ebp)`
88			`adcl $0,-4(%ebp)`
89
90			`movl 4(%esi),%eax /* midl of Xsig */`
91			`mull 4(%ecx) /* msl of b */`
92			`addl %eax,-12(%ebp)`
93			`adcl %edx,-8(%ebp)`
94			`adcl $0,-4(%ebp)`
95
96			`movl 8(%esi),%eax /* msl of Xsig */`
97			`mull (%ecx) /* lsl of b */`
98			`addl %eax,-12(%ebp)`
99			`adcl %edx,-8(%ebp)`
100			`adcl $0,-4(%ebp)`
101
102			`movl 8(%esi),%eax /* msl of Xsig */`
103			`mull 4(%ecx) /* msl of b */`
104			`addl %eax,-8(%ebp)`
105			`adcl %edx,-4(%ebp)`
106
107			`movl -12(%ebp),%eax`
108			`movl %eax,(%esi)`
109			`movl -8(%ebp),%eax`
110			`movl %eax,4(%esi)`
111			`movl -4(%ebp),%eax`
112			`movl %eax,8(%esi)`
113
114			`popl %esi`
115			`leave`
116			`ret`
117
118
119
120			`ENTRY(mul_Xsig_Xsig)`
121			`pushl %ebp`
122			`movl %esp,%ebp`
123			`subl $16,%esp`
124			`pushl %esi`
125
126			`movl PARAM1,%esi`
127			`movl PARAM2,%ecx`
128
129			`xor %eax,%eax`
130			`movl %eax,-4(%ebp)`
131			`movl %eax,-8(%ebp)`
132
133			`movl (%esi),%eax /* lsl of Xsig */`
134			`mull 8(%ecx) /* msl of b */`
135			`movl %edx,-12(%ebp)`
136
137			`movl 4(%esi),%eax /* midl of Xsig */`
138			`mull 4(%ecx) /* midl of b */`
139			`addl %edx,-12(%ebp)`
140			`adcl $0,-8(%ebp)`
141			`adcl $0,-4(%ebp)`
142
143			`movl 8(%esi),%eax /* msl of Xsig */`
144			`mull (%ecx) /* lsl of b */`
145			`addl %edx,-12(%ebp)`
146			`adcl $0,-8(%ebp)`
147			`adcl $0,-4(%ebp)`
148
149			`movl 4(%esi),%eax /* midl of Xsig */`
150			`mull 8(%ecx) /* msl of b */`
151			`addl %eax,-12(%ebp)`
152			`adcl %edx,-8(%ebp)`
153			`adcl $0,-4(%ebp)`
154
155			`movl 8(%esi),%eax /* msl of Xsig */`
156			`mull 4(%ecx) /* midl of b */`
157			`addl %eax,-12(%ebp)`
158			`adcl %edx,-8(%ebp)`
159			`adcl $0,-4(%ebp)`
160
161			`movl 8(%esi),%eax /* msl of Xsig */`
162			`mull 8(%ecx) /* msl of b */`
163			`addl %eax,-8(%ebp)`
164			`adcl %edx,-4(%ebp)`
165
166			`movl -12(%ebp),%edx`
167			`movl %edx,(%esi)`
168			`movl -8(%ebp),%edx`
169			`movl %edx,4(%esi)`
170			`movl -4(%ebp),%edx`
171			`movl %edx,8(%esi)`
172
173			`popl %esi`
174			`leave`
175			`ret`
176

Browse

Tools

Subversion Repositories or1k_old

[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [i386/] [math-emu/] [mul_Xsig.S] - Blame information for rev 1765