main.elf:     file format elf32-avr

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         00000072  00000000  00000000  00000094  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .data         00000000  00800060  00000072  00000106  2**0
                  CONTENTS, ALLOC, LOAD, DATA
  2 .bss          00000000  00800060  00000072  00000106  2**0
                  ALLOC
  3 .noinit       00000000  00800060  00800060  00000106  2**0
                  CONTENTS
  4 .eeprom       00000000  00810000  00810000  00000106  2**0
                  CONTENTS
  5 .stab         000002a0  00000000  00000000  00000108  2**2
                  CONTENTS, READONLY, DEBUGGING
  6 .stabstr      000004d5  00000000  00000000  000003a8  2**0
                  CONTENTS, READONLY, DEBUGGING
Disassembly of section .text:

00000000 <__vectors>:
   0:	0a c0       	rjmp	.+20     	; 0x16
   2:	22 c0       	rjmp	.+68     	; 0x48
   4:	21 c0       	rjmp	.+66     	; 0x48
   6:	20 c0       	rjmp	.+64     	; 0x48
   8:	1f c0       	rjmp	.+62     	; 0x48
   a:	1e c0       	rjmp	.+60     	; 0x48
   c:	1d c0       	rjmp	.+58     	; 0x48
   e:	1c c0       	rjmp	.+56     	; 0x48
  10:	1b c0       	rjmp	.+54     	; 0x48
  12:	1a c0       	rjmp	.+52     	; 0x48
  14:	19 c0       	rjmp	.+50     	; 0x48

00000016 <__ctors_end>:
  16:	11 24       	eor	r1, r1
  18:	1f be       	out	0x3f, r1	; 63
  1a:	cf ed       	ldi	r28, 0xDF	; 223
  1c:	cd bf       	out	0x3d, r28	; 61

0000001e <__do_copy_data>:
  1e:	10 e0       	ldi	r17, 0x00	; 0
  20:	a0 e6       	ldi	r26, 0x60	; 96
  22:	b0 e0       	ldi	r27, 0x00	; 0
  24:	e2 e7       	ldi	r30, 0x72	; 114
  26:	f0 e0       	ldi	r31, 0x00	; 0
  28:	03 c0       	rjmp	.+6      	; 0x30

0000002a <.do_copy_data_loop>:
  2a:	c8 95       	lpm
  2c:	31 96       	adiw	r30, 0x01	; 1
  2e:	0d 92       	st	X+, r0

00000030 <.do_copy_data_start>:
  30:	a0 36       	cpi	r26, 0x60	; 96
  32:	b1 07       	cpc	r27, r17
  34:	d1 f7       	brne	.-12     	; 0x2a

00000036 <__do_clear_bss>:
  36:	10 e0       	ldi	r17, 0x00	; 0
  38:	a0 e6       	ldi	r26, 0x60	; 96
  3a:	b0 e0       	ldi	r27, 0x00	; 0
  3c:	01 c0       	rjmp	.+2      	; 0x40

0000003e <.do_clear_bss_loop>:
  3e:	1d 92       	st	X+, r1

00000040 <.do_clear_bss_start>:
  40:	a0 36       	cpi	r26, 0x60	; 96
  42:	b1 07       	cpc	r27, r17
  44:	e1 f7       	brne	.-8      	; 0x3e
  46:	0a c0       	rjmp	.+20     	; 0x5c

00000048 <__bad_interrupt>:
  48:	db cf       	rjmp	.-74     	; 0x0

0000004a <putc>:
#define uint unsigned int

void putc(uchar c)
{
	loop_until_bit_is_set(UCR,UDRE);
  4a:	55 9b       	sbis	0x0a, 5	; 10
  4c:	fe cf       	rjmp	.-4      	; 0x4a
	UDR=c;
  4e:	8c b9       	out	0x0c, r24	; 12
  50:	08 95       	ret

00000052 <getc>:
}

uchar getc(void)
{
	loop_until_bit_is_set(UCR,RXC);	
  52:	57 9b       	sbis	0x0a, 7	; 10
  54:	fe cf       	rjmp	.-4      	; 0x52
	return UDR;
  56:	8c b1       	in	r24, 0x0c	; 12
}
  58:	99 27       	eor	r25, r25
  5a:	08 95       	ret

0000005c <main>:

int  main(void) 
{
  5c:	cf ed       	ldi	r28, 0xDF	; 223
  5e:	d0 e0       	ldi	r29, 0x00	; 0
  60:	de bf       	out	0x3e, r29	; 62
  62:	cd bf       	out	0x3d, r28	; 61
	//uart 初始化
 	UCR=(1<<RXEN)|(1<<TXEN);	
  64:	88 e1       	ldi	r24, 0x18	; 24
  66:	8a b9       	out	0x0a, r24	; 10
	UBRR=25; //baud=9600    UBRR=CK/(9600*16) -1   
  68:	89 e1       	ldi	r24, 0x19	; 25
  6a:	89 b9       	out	0x09, r24	; 9
	
	while(1)
	{
		putc(getc());
  6c:	f2 df       	rcall	.-28     	; 0x52
  6e:	ed df       	rcall	.-38     	; 0x4a
  70:	fd cf       	rjmp	.-6      	; 0x6c