led_323.lis

ATmegal128的JTAG测试程序

                         .module led_323.c
                         .area text(rom, con, rel)
 0000                   .dbfile D:\jtag_test\led_323.c
 0000                   .dbfunc s Delay _Delay fI
                       ;              a -> R16
                       ;              b -> R18
                         .even
 0000                 _Delay::
 0000                   .dbline -1
 0000                   .dbline 8
                       ; #include <iom323.h>
                       ; #include <macros.h>
                       ; 
                       ; /* This seems to produce the right amount of delay for the LED to be
                       ;  * seen
                       ;  */
                       ; void Delay()
                       ;     {
 0000                   .dbline 11
                       ;     unsigned char a, b;
                       ; 
                       ;     for (a = 1; a; a++)
 0000 01E0              ldi R16,1
 0002 06C0              xjmp L5
 0004                 L2:
 0004                   .dbline 12
                       ;         for (b = 1; b; b++)
 0004 21E0              ldi R18,1
 0006 01C0              xjmp L9
 0008                 L6:
 0008                   .dbline 13
 0008                 L7:
 0008                   .dbline 12
 0008 2395              inc R18
 000A                 L9:
 000A                   .dbline 12
 000A 2223              tst R18
 000C E9F7              brne L6
 000E                 L3:
 000E                   .dbline 11
 000E 0395              inc R16
 0010                 L5:
 0010                   .dbline 11
 0010 0023              tst R16
 0012 C1F7              brne L2
 0014                   .dbline -2
 0014                   .dbline 14
                       ;             ;
                       ;     }
 0014                 L1:
 0014                   .dbline 0 ; func end
 0014 0895              ret
 0016                   .dbsym r a 16 c
 0016                   .dbsym r b 18 c
 0016                   .dbfunc s LED_On _LED_On fI
                       ;              i -> R20,R21
                         .even
 0016                 _LED_On::
 0016 0E940000          xcall push_gset1
 001A A801              movw R20,R16
 001C                   .dbline -1
 001C                   .dbline 17
                       ; 
                       ; void LED_On(int i)
                       ;     {
 001C                   .dbline 18
                       ;     PORTB = ~BIT(i);    /* low output to turn LED on */
 001C 01E0              ldi R16,1
 001E 10E0              ldi R17,0
 0020 9A01              movw R18,R20
 0022 0E940000          xcall lsl16
 0026 1801              movw R2,R16
 0028 2094              com R2
 002A 3094              com R3
 002C 28BA              out 0x18,R2
 002E                   .dbline 19
                       ;     Delay();
 002E E8DF              xcall _Delay
 0030                   .dbline -2
 0030                   .dbline 20
                       ;     }
 0030                 L10:
 0030 0E940000          xcall pop_gset1
 0034                   .dbline 0 ; func end
 0034 0895              ret
 0036                   .dbsym r i 20 I
 0036                   .dbfunc s main _main fI
                       ;              i -> R20,R21
                         .even
 0036                 _main::
 0036                   .dbline -1
 0036                   .dbline 23
                       ; 
                       ; void main()
                       ;     {
 0036                   .dbline 25
                       ;     int i;
                       ;     DDRB = 0xFF;    /* output */
 0036 8FEF              ldi R24,255
 0038 87BB              out 0x17,R24
 003A                   .dbline 26
                       ;     PORTB = 0xFF;   /* all off */
 003A 88BB              out 0x18,R24
 003C 2AC0              xjmp L13
 003E                 L12:
 003E                   .dbline 29
                       ; 
                       ;     while (1)
                       ;         {
 003E                   .dbline 31
                       ;         /* forward march */
                       ;         for (i = 0; i < 8; i++)
 003E 4427              clr R20
 0040 5527              clr R21
 0042                 L15:
 0042                   .dbline 32
 0042 8A01              movw R16,R20
 0044 E8DF              xcall _LED_On
 0046                 L16:
 0046                   .dbline 31
 0046 4F5F              subi R20,255  ; offset = 1
 0048 5F4F              sbci R21,255
 004A                   .dbline 31
 004A 4830              cpi R20,8
 004C E0E0              ldi R30,0
 004E 5E07              cpc R21,R30
 0050 C4F3              brlt L15
 0052                   .dbline 34
                       ;             LED_On(i);
                       ;         /* backward march */
                       ;         for (i = 8; i > 0; i--)
 0052 48E0              ldi R20,8
 0054 50E0              ldi R21,0
 0056                 L19:
 0056                   .dbline 35
 0056 8A01              movw R16,R20
 0058 DEDF              xcall _LED_On
 005A                 L20:
 005A                   .dbline 34
 005A 4150              subi R20,1
 005C 5040              sbci R21,0
 005E                   .dbline 34
 005E 2224              clr R2
 0060 3324              clr R3
 0062 2416              cp R2,R20
 0064 3506              cpc R3,R21
 0066 BCF3              brlt L19
 0068                   .dbline 37
                       ;             LED_On(i);
                       ;         /* skip */
                       ;         for (i = 0; i < 8; i += 2)
 0068 4427              clr R20
 006A 5527              clr R21
 006C                 L23:
 006C                   .dbline 38
 006C 8A01              movw R16,R20
 006E D3DF              xcall _LED_On
 0070                 L24:
 0070                   .dbline 37
 0070 4E5F              subi R20,254  ; offset = 2
 0072 5F4F              sbci R21,255
 0074                   .dbline 37
 0074 4830              cpi R20,8
 0076 E0E0              ldi R30,0
 0078 5E07              cpc R21,R30
 007A C4F3              brlt L23
 007C                   .dbline 39
                       ;             LED_On(i);
                       ;         for (i = 7; i > 0; i -= 2)
 007C 47E0              ldi R20,7
 007E 50E0              ldi R21,0
 0080                 L27:
 0080                   .dbline 40
 0080 8A01              movw R16,R20
 0082 C9DF              xcall _LED_On
 0084                 L28:
 0084                   .dbline 39
 0084 4250              subi R20,2
 0086 5040              sbci R21,0
 0088                   .dbline 39
 0088 2224              clr R2
 008A 3324              clr R3
 008C 2416              cp R2,R20
 008E 3506              cpc R3,R21
 0090 BCF3              brlt L27
 0092                   .dbline 41
 0092                 L13:
 0092                   .dbline 28
 0092 D5CF              xjmp L12
 0094                 X0:
 0094                   .dbline -2
 0094                   .dbline 42
                       ;             LED_On(i);
                       ;         }
                       ;     }
 0094                 L11:
 0094                   .dbline 0 ; func end
 0094 0895              ret
 0096                   .dbsym r i 20 I