mega8test.lst

基于atmel avr mega8和gcc编译器的读flash固定位置的时钟校准字节的程序。

mega8test.elf:     file format elf32-avr

Disassembly of section .text:

00000000 <__vectors>:
   0:	12 c0       	rjmp	.+36     	; 0x26
   2:	2b c0       	rjmp	.+86     	; 0x5a
   4:	2a c0       	rjmp	.+84     	; 0x5a
   6:	29 c0       	rjmp	.+82     	; 0x5a
   8:	28 c0       	rjmp	.+80     	; 0x5a
   a:	27 c0       	rjmp	.+78     	; 0x5a
   c:	26 c0       	rjmp	.+76     	; 0x5a
   e:	25 c0       	rjmp	.+74     	; 0x5a
  10:	24 c0       	rjmp	.+72     	; 0x5a
  12:	23 c0       	rjmp	.+70     	; 0x5a
  14:	22 c0       	rjmp	.+68     	; 0x5a
  16:	21 c0       	rjmp	.+66     	; 0x5a
  18:	20 c0       	rjmp	.+64     	; 0x5a
  1a:	1f c0       	rjmp	.+62     	; 0x5a
  1c:	1e c0       	rjmp	.+60     	; 0x5a
  1e:	1d c0       	rjmp	.+58     	; 0x5a
  20:	1c c0       	rjmp	.+56     	; 0x5a
  22:	1b c0       	rjmp	.+54     	; 0x5a
  24:	1a c0       	rjmp	.+52     	; 0x5a

00000026 <__ctors_end>:
  26:	11 24       	eor	r1, r1
  28:	1f be       	out	0x3f, r1	; 63
  2a:	cf e5       	ldi	r28, 0x5F	; 95
  2c:	d4 e0       	ldi	r29, 0x04	; 4
  2e:	de bf       	out	0x3e, r29	; 62
  30:	cd bf       	out	0x3d, r28	; 61

00000032 <__do_copy_data>:
  32:	10 e0       	ldi	r17, 0x00	; 0
  34:	a0 e6       	ldi	r26, 0x60	; 96
  36:	b0 e0       	ldi	r27, 0x00	; 0
  38:	e6 e9       	ldi	r30, 0x96	; 150
  3a:	f0 e0       	ldi	r31, 0x00	; 0
  3c:	02 c0       	rjmp	.+4      	; 0x42

0000003e <.do_copy_data_loop>:
  3e:	05 90       	lpm	r0, Z+
  40:	0d 92       	st	X+, r0

00000042 <.do_copy_data_start>:
  42:	a0 36       	cpi	r26, 0x60	; 96
  44:	b1 07       	cpc	r27, r17
  46:	d9 f7       	brne	.-10     	; 0x3e

00000048 <__do_clear_bss>:
  48:	10 e0       	ldi	r17, 0x00	; 0
  4a:	a0 e6       	ldi	r26, 0x60	; 96
  4c:	b0 e0       	ldi	r27, 0x00	; 0
  4e:	01 c0       	rjmp	.+2      	; 0x52

00000050 <.do_clear_bss_loop>:
  50:	1d 92       	st	X+, r1

00000052 <.do_clear_bss_start>:
  52:	a0 36       	cpi	r26, 0x60	; 96
  54:	b1 07       	cpc	r27, r17
  56:	e1 f7       	brne	.-8      	; 0x50
  58:	01 c0       	rjmp	.+2      	; 0x5c

0000005a <__bad_interrupt>:
  5a:	d2 cf       	rjmp	.-92     	; 0x0

0000005c <main>:

#define CAL (void *)0x1ffe

int main(void)
{
  5c:	cf e5       	ldi	r28, 0x5F	; 95
  5e:	d4 e0       	ldi	r29, 0x04	; 4
  60:	de bf       	out	0x3e, r29	; 62
  62:	cd bf       	out	0x3d, r28	; 61
  unsigned char a;
  a = pgm_read_byte(CAL);
  64:	ee ef       	ldi	r30, 0xFE	; 254
  66:	ff e1       	ldi	r31, 0x1F	; 31
  68:	14 91       	lpm	r17, Z
  OSCCAL = a;
  6a:	11 bf       	out	0x31, r17	; 49
  eeprom_write_byte((unsigned char *)0x07,a);
  6c:	61 2f       	mov	r22, r17
  6e:	87 e0       	ldi	r24, 0x07	; 7
  70:	90 e0       	ldi	r25, 0x00	; 0
  72:	06 d0       	rcall	.+12     	; 0x80
  eeprom_write_byte((unsigned char *)0x08,a+1);
  74:	1f 5f       	subi	r17, 0xFF	; 255
  76:	61 2f       	mov	r22, r17
  78:	88 e0       	ldi	r24, 0x08	; 8
  7a:	90 e0       	ldi	r25, 0x00	; 0
  7c:	01 d0       	rcall	.+2      	; 0x80
  while(1);
  7e:	ff cf       	rjmp	.-2      	; 0x7e

00000080 <eeprom_write_byte>:
  80:	e1 99       	sbic	0x1c, 1	; 28
  82:	fe cf       	rjmp	.-4      	; 0x80
  84:	9f bb       	out	0x1f, r25	; 31
  86:	8e bb       	out	0x1e, r24	; 30
  88:	6d bb       	out	0x1d, r22	; 29
  8a:	0f b6       	in	r0, 0x3f	; 63
  8c:	f8 94       	cli
  8e:	e2 9a       	sbi	0x1c, 2	; 28
  90:	e1 9a       	sbi	0x1c, 1	; 28
  92:	0f be       	out	0x3f, r0	; 63
  94:	08 95       	ret