URL https://opencores.org/ocsvn/eco32/eco32/trunk

Subversion Repositories eco32

[/] [eco32/] [trunk/] [fpga/] [tests/] [test_054/] [copy/] [copy.s] - Blame information for rev 297

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

Line No.	Rev	Author	Line
1	295	hellwig	`;`
2			`; copy.s -- copy a program from ROM to RAM before executing it`
3			`;`
4
5			`.set dst,0xC0000000 ; destination is start of RAM`
6			`.import size ; number of bytes to be copied`
7
8			`.set PSW,0 ; reg # of PSW`
9
10			`.nosyn`
11
12			`reset:`
13			`j start`
14
15			`interrupt:`
16			`j interrupt ; we better have no interrupts`
17
18			`userMiss:`
19			`j userMiss ; and no user TLB misses`
20
21			`start:`
22			`mvts $0,PSW ; disable interrupts and user mode`
23
24			`add $0,$0,$0`
25			`add $0,$0,$0`
26			`add $0,$0,$0`
27			`add $0,$0,$0`
28			`add $0,$0,$0`
29			`add $0,$0,$0`
30
31			`ldhi $8,src`
32
33			`add $0,$0,$0`
34			`add $0,$0,$0`
35			`add $0,$0,$0`
36			`add $0,$0,$0`
37			`add $0,$0,$0`
38			`add $0,$0,$0`
39
40			`or $8,$8,src`
41
42			`add $0,$0,$0`
43			`add $0,$0,$0`
44			`add $0,$0,$0`
45			`add $0,$0,$0`
46			`add $0,$0,$0`
47			`add $0,$0,$0`
48
49			`ldhi $9,dst`
50
51			`add $0,$0,$0`
52			`add $0,$0,$0`
53			`add $0,$0,$0`
54			`add $0,$0,$0`
55			`add $0,$0,$0`
56			`add $0,$0,$0`
57
58			`add $10,$9,size`
59
60			`add $0,$0,$0`
61			`add $0,$0,$0`
62			`add $0,$0,$0`
63			`add $0,$0,$0`
64			`add $0,$0,$0`
65			`add $0,$0,$0`
66
67			`loop:`
68			`ldw $11,$8,0 ; copy word`
69
70			`add $0,$0,$0`
71			`add $0,$0,$0`
72			`add $0,$0,$0`
73			`add $0,$0,$0`
74			`add $0,$0,$0`
75			`add $0,$0,$0`
76
77			`stw $11,$9,0`
78
79			`add $0,$0,$0`
80			`add $0,$0,$0`
81			`add $0,$0,$0`
82			`add $0,$0,$0`
83			`add $0,$0,$0`
84			`add $0,$0,$0`
85
86			`add $8,$8,4 ; bump pointers`
87
88			`add $0,$0,$0`
89			`add $0,$0,$0`
90			`add $0,$0,$0`
91			`add $0,$0,$0`
92			`add $0,$0,$0`
93			`add $0,$0,$0`
94
95			`add $9,$9,4`
96
97			`add $0,$0,$0`
98			`add $0,$0,$0`
99			`add $0,$0,$0`
100			`add $0,$0,$0`
101			`add $0,$0,$0`
102			`add $0,$0,$0`
103
104			`bltu $9,$10,loop ; more?`
105
106			`add $0,$0,$0`
107			`add $0,$0,$0`
108			`add $0,$0,$0`
109			`add $0,$0,$0`
110			`add $0,$0,$0`
111			`add $0,$0,$0`
112
113			`ldhi $8,dst ; start execution`
114
115			`add $0,$0,$0`
116			`add $0,$0,$0`
117			`add $0,$0,$0`
118			`add $0,$0,$0`
119			`add $0,$0,$0`
120			`add $0,$0,$0`
121
122			`jr $8`
123
124			`add $0,$0,$0`
125			`add $0,$0,$0`
126			`add $0,$0,$0`
127			`add $0,$0,$0`
128			`add $0,$0,$0`
129			`add $0,$0,$0`
130
131			`; the program to be copied follows immediately`
132			`src:`

Browse

Tools

Subversion Repositories eco32

[/] [eco32/] [trunk/] [fpga/] [tests/] [test_054/] [copy/] [copy.s] - Blame information for rev 297