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random.lst
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random.lst
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ARM Macro Assembler Page 1
1 00000000 ;Random number generator;
2 00000000 ; Linear congruential generator
3 00000000 ; from Numerical Recipes by Press et al.
4 00000000 ; Jonathan Valvano
5 00000000
6 00000000 ; How to use:
7 00000000 ; 1) call Random_Init once with a seed
8 00000000 ; Random_Init(1);
9 00000000 ; Random_Init(NVIC_CURRENT_R);
10 00000000 ; 2) call Random over and over to get a new random numbe
r
11 00000000 ; n = Random32(); // 32 bit number
12 00000000 ; m = (Random32()>>24)%60; // a number from 0 to 59
13 00000000
14 00000000 THUMB
15 00000000 AREA DATA, ALIGN=2
16 00000000 00 00 00
00 M SPACE 4
17 00000004 ALIGN
18 00000004 AREA |.text|, CODE, READONLY, ALIGN=
2
19 00000000 EXPORT Random_Init
20 00000000 EXPORT Random
21 00000000 EXPORT Random32
22 00000000 Random_Init
23 00000000 4A0C LDR R2,=M ; R4 = &M, R4 point
s to M
24 00000002 F04F 0001 MOV R0,#1 ; Initial seed
25 00000006 6010 STR R0,[R2] ; M=1
26 00000008 4770 BX LR
27 0000000A ;------------Random32------------
28 0000000A ; Return R0= random number
29 0000000A ; Linear congruential generator
30 0000000A ; from Numerical Recipes by Press et al.
31 0000000A 4A0A Random32
LDR R2,=M ; R2 = &M, R4 point
s to M
32 0000000C 6810 LDR R0,[R2] ; R0=M
33 0000000E 490A LDR R1,=1664525
34 00000010 FB00 F001 MUL R0,R0,R1 ; R0 = 1664525*M
35 00000014 4909 LDR R1,=1013904223
36 00000016 4408 ADD R0,R1 ; 1664525*M+1013904
223
37 00000018 6010 STR R0,[R2] ; store M
38 0000001A 4770 BX LR
39 0000001C
40 0000001C ;------------Random------------
41 0000001C ; Return R0= random number, 0 to 255
42 0000001C ; Linear congruential generator
43 0000001C ; from Numerical Recipes by Press et al.
44 0000001C 4A05 Random LDR R2,=M ; R2 = &M, R4 point
s to M
45 0000001E 6810 LDR R0,[R2] ; R0=M
46 00000020 4905 LDR R1,=1664525
47 00000022 FB00 F001 MUL R0,R0,R1 ; R0 = 1664525*M
48 00000026 4905 LDR R1,=1013904223
49 00000028 4408 ADD R0,R1 ; 1664525*M+1013904
223
50 0000002A 6010 STR R0,[R2] ; store M
ARM Macro Assembler Page 2
51 0000002C EA4F 6010 LSR R0,R0,#24 ; top 8 bits of num
ber
52 00000030 4770 BX LR
53 00000032 00 00 ALIGN
54 00000034 END
00000000
0019660D
3C6EF35F
Command Line: --debug --xref --diag_suppress=9931 --cpu=Cortex-M4 --apcs=interw
ork --depend=.\random.d -o.\random.o -IC:\Keil_v5\ARM\RV31\INC -IC:\Keil_v5\ARM
\CMSIS\Include -IC:\Keil_v5\ARM\INC\Luminary --predefine="__RTX SETA 1" --prede
fine="__EVAL SETA 1" --predefine="__UVISION_VERSION SETA 529" --list=.\random.l
st random.s
ARM Macro Assembler Page 1 Alphabetic symbol ordering
Relocatable symbols
DATA 00000000
Symbol: DATA
Definitions
At line 15 in file random.s
Uses
None
Comment: DATA unused
M 00000000
Symbol: M
Definitions
At line 16 in file random.s
Uses
At line 23 in file random.s
At line 31 in file random.s
At line 44 in file random.s
2 symbols
ARM Macro Assembler Page 1 Alphabetic symbol ordering
Relocatable symbols
.text 00000000
Symbol: .text
Definitions
At line 18 in file random.s
Uses
None
Comment: .text unused
Random 0000001C
Symbol: Random
Definitions
At line 44 in file random.s
Uses
At line 20 in file random.s
Comment: Random used once
Random32 0000000A
Symbol: Random32
Definitions
At line 31 in file random.s
Uses
At line 21 in file random.s
Comment: Random32 used once
Random_Init 00000000
Symbol: Random_Init
Definitions
At line 22 in file random.s
Uses
At line 19 in file random.s
Comment: Random_Init used once
4 symbols
341 symbols in table