optiboot_atmega168.elf: file format elf32-avr

Sections:

Idx Name Size VMA LMA File off Algn

0 .text 000001f4 00003e00 00003e00 00000054 2**1

CONTENTS, ALLOC, LOAD, READONLY, CODE

1 .version 00000002 00003ffe 00003ffe 00000248 2**0

CONTENTS, READONLY

2 .debug_aranges 00000028 00000000 00000000 0000024a 2**0

CONTENTS, READONLY, DEBUGGING

3 .debug_pubnames 0000005f 00000000 00000000 00000272 2**0

CONTENTS, READONLY, DEBUGGING

4 .debug_info 000002a8 00000000 00000000 000002d1 2**0

CONTENTS, READONLY, DEBUGGING

5 .debug_abbrev 00000178 00000000 00000000 00000579 2**0

CONTENTS, READONLY, DEBUGGING

6 .debug_line 00000488 00000000 00000000 000006f1 2**0

CONTENTS, READONLY, DEBUGGING

7 .debug_frame 00000080 00000000 00000000 00000b7c 2**2

CONTENTS, READONLY, DEBUGGING

8 .debug_str 0000014f 00000000 00000000 00000bfc 2**0

CONTENTS, READONLY, DEBUGGING

9 .debug_loc 000002d8 00000000 00000000 00000d4b 2**0

CONTENTS, READONLY, DEBUGGING

10 .debug_ranges 00000078 00000000 00000000 00001023 2**0

CONTENTS, READONLY, DEBUGGING

Disassembly of section .text:

00003e00 <main>:

#define rstVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+4))

#define wdtVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+6))

#endif

/* main program starts here */

int main(void) {

3e00: 11 24 eor r1, r1

#ifdef __AVR_ATmega8__

SP=RAMEND; // This is done by hardware reset

#endif

// Adaboot no-wait mod

ch = MCUSR;

3e02: 84 b7 in r24, 0x34 ; 52

MCUSR = 0;

3e04: 14 be out 0x34, r1 ; 52

if (!(ch & _BV(EXTRF))) appStart();

3e06: 81 ff sbrs r24, 1

3e08: f0 d0 rcall .+480 ; 0x3fea <appStart>

#if LED_START_FLASHES > 0

// Set up Timer 1 for timeout counter

TCCR1B = _BV(CS12) | _BV(CS10); // div 1024

3e0a: 85 e0 ldi r24, 0x05 ; 5

3e0c: 80 93 81 00 sts 0x0081, r24

UCSRA = _BV(U2X); //Double speed mode USART

UCSRB = _BV(RXEN) | _BV(TXEN); // enable Rx & Tx

UCSRC = _BV(URSEL) | _BV(UCSZ1) | _BV(UCSZ0); // config USART; 8N1

UBRRL = (uint8_t)( (F_CPU + BAUD_RATE * 4L) / (BAUD_RATE * 8L) - 1 );

#else

UCSR0A = _BV(U2X0); //Double speed mode USART0

3e10: 82 e0 ldi r24, 0x02 ; 2

3e12: 80 93 c0 00 sts 0x00C0, r24

UCSR0B = _BV(RXEN0) | _BV(TXEN0);

3e16: 88 e1 ldi r24, 0x18 ; 24

3e18: 80 93 c1 00 sts 0x00C1, r24

UCSR0C = _BV(UCSZ00) | _BV(UCSZ01);

3e1c: 86 e0 ldi r24, 0x06 ; 6

3e1e: 80 93 c2 00 sts 0x00C2, r24

UBRR0L = (uint8_t)( (F_CPU + BAUD_RATE * 4L) / (BAUD_RATE * 8L) - 1 );

3e22: 80 e1 ldi r24, 0x10 ; 16

3e24: 80 93 c4 00 sts 0x00C4, r24

#endif

#endif

// Set up watchdog to trigger after 500ms

watchdogConfig(WATCHDOG_1S);

3e28: 8e e0 ldi r24, 0x0E ; 14

3e2a: c9 d0 rcall .+402 ; 0x3fbe <watchdogConfig>

/* Set LED pin as output */

LED_DDR |= _BV(LED);

3e2c: 25 9a sbi 0x04, 5 ; 4

3e2e: 86 e0 ldi r24, 0x06 ; 6

}

#if LED_START_FLASHES > 0

void flash_led(uint8_t count) {

do {

TCNT1 = -(F_CPU/(1024*16));

3e30: 20 e3 ldi r18, 0x30 ; 48

3e32: 3c ef ldi r19, 0xFC ; 252

TIFR1 = _BV(TOV1);

3e34: 91 e0 ldi r25, 0x01 ; 1

}

#if LED_START_FLASHES > 0

void flash_led(uint8_t count) {

do {

TCNT1 = -(F_CPU/(1024*16));

3e36: 30 93 85 00 sts 0x0085, r19

3e3a: 20 93 84 00 sts 0x0084, r18

TIFR1 = _BV(TOV1);

3e3e: 96 bb out 0x16, r25 ; 22

while(!(TIFR1 & _BV(TOV1)));

3e40: b0 9b sbis 0x16, 0 ; 22

3e42: fe cf rjmp .-4 ; 0x3e40 <main+0x40>

#ifdef __AVR_ATmega8__

LED_PORT ^= _BV(LED);

#else

LED_PIN |= _BV(LED);

3e44: 1d 9a sbi 0x03, 5 ; 3

}

#endif

// Watchdog functions. These are only safe with interrupts turned off.

void watchdogReset() {

__asm__ __volatile__ (

3e46: a8 95 wdr

LED_PORT ^= _BV(LED);

#else

LED_PIN |= _BV(LED);

#endif

watchdogReset();

} while (--count);

3e48: 81 50 subi r24, 0x01 ; 1

3e4a: a9 f7 brne .-22 ; 0x3e36 <main+0x36>

3e4c: cc 24 eor r12, r12

3e4e: dd 24 eor r13, r13

ch = SPM_PAGESIZE / 2;

do {

uint16_t a;

a = *bufPtr++;

a |= (*bufPtr++) << 8;

__boot_page_fill_short((uint16_t)(void*)addrPtr,a);

3e50: 88 24 eor r8, r8

3e52: 83 94 inc r8

addrPtr += 2;

} while (--ch);

// Write from programming buffer

__boot_page_write_short((uint16_t)(void*)address);

3e54: b5 e0 ldi r27, 0x05 ; 5

3e56: ab 2e mov r10, r27

boot_spm_busy_wait();

#if defined(RWWSRE)

// Reenable read access to flash

boot_rww_enable();

3e58: a1 e1 ldi r26, 0x11 ; 17

3e5a: 9a 2e mov r9, r26

do *bufPtr++ = getch();

while (--length);

// If we are in NRWW section, page erase has to be delayed until now.

// Todo: Take RAMPZ into account

if (address >= NRWWSTART) __boot_page_erase_short((uint16_t)(void*)address);

3e5c: f3 e0 ldi r31, 0x03 ; 3

3e5e: bf 2e mov r11, r31

#endif

/* Forever loop */

for (;;) {

/* get character from UART */

ch = getch();

3e60: a2 d0 rcall .+324 ; 0x3fa6 <getch>

if(ch == STK_GET_PARAMETER) {

3e62: 81 34 cpi r24, 0x41 ; 65

3e64: 61 f4 brne .+24 ; 0x3e7e <main+0x7e>

unsigned char which = getch();

3e66: 9f d0 rcall .+318 ; 0x3fa6 <getch>

3e68: 08 2f mov r16, r24

verifySpace();

3e6a: af d0 rcall .+350 ; 0x3fca <verifySpace>

if (which == 0x82) {

3e6c: 02 38 cpi r16, 0x82 ; 130

3e6e: 11 f0 breq .+4 ; 0x3e74 <main+0x74>

/*

* Send optiboot version as "minor SW version"

*/

putch(OPTIBOOT_MINVER);

} else if (which == 0x81) {

3e70: 01 38 cpi r16, 0x81 ; 129

3e72: 11 f4 brne .+4 ; 0x3e78 <main+0x78>

putch(OPTIBOOT_MAJVER);

3e74: 84 e0 ldi r24, 0x04 ; 4

3e76: 01 c0 rjmp .+2 ; 0x3e7a <main+0x7a>

} else {

/*

* GET PARAMETER returns a generic 0x03 reply for

* other parameters - enough to keep Avrdude happy

*/

putch(0x03);

3e78: 83 e0 ldi r24, 0x03 ; 3

3e7a: 8d d0 rcall .+282 ; 0x3f96 <putch>

3e7c: 89 c0 rjmp .+274 ; 0x3f90 <main+0x190>

}

}

else if(ch == STK_SET_DEVICE) {

3e7e: 82 34 cpi r24, 0x42 ; 66

3e80: 11 f4 brne .+4 ; 0x3e86 <main+0x86>

// SET DEVICE is ignored

getNch(20);

3e82: 84 e1 ldi r24, 0x14 ; 20

3e84: 03 c0 rjmp .+6 ; 0x3e8c <main+0x8c>

}

else if(ch == STK_SET_DEVICE_EXT) {

3e86: 85 34 cpi r24, 0x45 ; 69

3e88: 19 f4 brne .+6 ; 0x3e90 <main+0x90>

// SET DEVICE EXT is ignored

getNch(5);

3e8a: 85 e0 ldi r24, 0x05 ; 5

3e8c: a6 d0 rcall .+332 ; 0x3fda <getNch>

3e8e: 80 c0 rjmp .+256 ; 0x3f90 <main+0x190>

}

else if(ch == STK_LOAD_ADDRESS) {

3e90: 85 35 cpi r24, 0x55 ; 85

3e92: 79 f4 brne .+30 ; 0x3eb2 <main+0xb2>

// LOAD ADDRESS

uint16_t newAddress;

newAddress = getch();

3e94: 88 d0 rcall .+272 ; 0x3fa6 <getch>

newAddress = (newAddress & 0xff) | (getch() << 8);

3e96: e8 2e mov r14, r24

3e98: ff 24 eor r15, r15

3e9a: 85 d0 rcall .+266 ; 0x3fa6 <getch>

3e9c: 08 2f mov r16, r24

3e9e: 10 e0 ldi r17, 0x00 ; 0

3ea0: 10 2f mov r17, r16

3ea2: 00 27 eor r16, r16

3ea4: 0e 29 or r16, r14

3ea6: 1f 29 or r17, r15

#ifdef RAMPZ

// Transfer top bit to RAMPZ

RAMPZ = (newAddress & 0x8000) ? 1 : 0;

#endif

newAddress += newAddress; // Convert from word address to byte address

3ea8: 00 0f add r16, r16

3eaa: 11 1f adc r17, r17

address = newAddress;

verifySpace();

3eac: 8e d0 rcall .+284 ; 0x3fca <verifySpace>

3eae: 68 01 movw r12, r16

3eb0: 6f c0 rjmp .+222 ; 0x3f90 <main+0x190>

}

else if(ch == STK_UNIVERSAL) {

3eb2: 86 35 cpi r24, 0x56 ; 86

3eb4: 21 f4 brne .+8 ; 0x3ebe <main+0xbe>

// UNIVERSAL command is ignored

getNch(4);

3eb6: 84 e0 ldi r24, 0x04 ; 4

3eb8: 90 d0 rcall .+288 ; 0x3fda <getNch>

putch(0x00);

3eba: 80 e0 ldi r24, 0x00 ; 0

3ebc: de cf rjmp .-68 ; 0x3e7a <main+0x7a>

}

/* Write memory, length is big endian and is in bytes */

else if(ch == STK_PROG_PAGE) {

3ebe: 84 36 cpi r24, 0x64 ; 100

3ec0: 09 f0 breq .+2 ; 0x3ec4 <main+0xc4>

3ec2: 40 c0 rjmp .+128 ; 0x3f44 <main+0x144>

// PROGRAM PAGE - we support flash programming only, not EEPROM

uint8_t *bufPtr;

uint16_t addrPtr;

getch(); /* getlen() */

3ec4: 70 d0 rcall .+224 ; 0x3fa6 <getch>

length = getch();

3ec6: 6f d0 rcall .+222 ; 0x3fa6 <getch>

3ec8: 08 2f mov r16, r24

getch();

3eca: 6d d0 rcall .+218 ; 0x3fa6 <getch>

// If we are in RWW section, immediately start page erase

if (address < NRWWSTART) __boot_page_erase_short((uint16_t)(void*)address);

3ecc: 80 e0 ldi r24, 0x00 ; 0

3ece: c8 16 cp r12, r24

3ed0: 88 e3 ldi r24, 0x38 ; 56

3ed2: d8 06 cpc r13, r24

3ed4: 18 f4 brcc .+6 ; 0x3edc <main+0xdc>

3ed6: f6 01 movw r30, r12

3ed8: b7 be out 0x37, r11 ; 55

3eda: e8 95 spm

3edc: c0 e0 ldi r28, 0x00 ; 0

3ede: d1 e0 ldi r29, 0x01 ; 1

// While that is going on, read in page contents

bufPtr = buff;

do *bufPtr++ = getch();

3ee0: 62 d0 rcall .+196 ; 0x3fa6 <getch>

3ee2: 89 93 st Y+, r24

while (--length);

3ee4: 0c 17 cp r16, r28

3ee6: e1 f7 brne .-8 ; 0x3ee0 <main+0xe0>

// If we are in NRWW section, page erase has to be delayed until now.

// Todo: Take RAMPZ into account

if (address >= NRWWSTART) __boot_page_erase_short((uint16_t)(void*)address);

3ee8: f0 e0 ldi r31, 0x00 ; 0

3eea: cf 16 cp r12, r31

3eec: f8 e3 ldi r31, 0x38 ; 56

3eee: df 06 cpc r13, r31

3ef0: 18 f0 brcs .+6 ; 0x3ef8 <main+0xf8>

3ef2: f6 01 movw r30, r12

3ef4: b7 be out 0x37, r11 ; 55

3ef6: e8 95 spm

// Read command terminator, start reply

verifySpace();

3ef8: 68 d0 rcall .+208 ; 0x3fca <verifySpace>

// If only a partial page is to be programmed, the erase might not be complete.

// So check that here

boot_spm_busy_wait();

3efa: 07 b6 in r0, 0x37 ; 55

3efc: 00 fc sbrc r0, 0

3efe: fd cf rjmp .-6 ; 0x3efa <main+0xfa>

3f00: a6 01 movw r20, r12

3f02: a0 e0 ldi r26, 0x00 ; 0

3f04: b1 e0 ldi r27, 0x01 ; 1

bufPtr = buff;

addrPtr = (uint16_t)(void*)address;

ch = SPM_PAGESIZE / 2;

do {

uint16_t a;

a = *bufPtr++;

3f06: 2c 91 ld r18, X

3f08: 30 e0 ldi r19, 0x00 ; 0

a |= (*bufPtr++) << 8;

3f0a: 11 96 adiw r26, 0x01 ; 1

3f0c: 8c 91 ld r24, X

3f0e: 11 97 sbiw r26, 0x01 ; 1

3f10: 90 e0 ldi r25, 0x00 ; 0

3f12: 98 2f mov r25, r24

3f14: 88 27 eor r24, r24

3f16: 82 2b or r24, r18

3f18: 93 2b or r25, r19

#define rstVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+4))

#define wdtVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+6))

#endif

/* main program starts here */

int main(void) {

3f1a: 12 96 adiw r26, 0x02 ; 2

ch = SPM_PAGESIZE / 2;

do {

uint16_t a;

a = *bufPtr++;

a |= (*bufPtr++) << 8;

__boot_page_fill_short((uint16_t)(void*)addrPtr,a);

3f1c: fa 01 movw r30, r20

3f1e: 0c 01 movw r0, r24

3f20: 87 be out 0x37, r8 ; 55

3f22: e8 95 spm

3f24: 11 24 eor r1, r1

addrPtr += 2;

3f26: 4e 5f subi r20, 0xFE ; 254

3f28: 5f 4f sbci r21, 0xFF ; 255

} while (--ch);

3f2a: f1 e0 ldi r31, 0x01 ; 1

3f2c: a0 38 cpi r26, 0x80 ; 128

3f2e: bf 07 cpc r27, r31

3f30: 51 f7 brne .-44 ; 0x3f06 <main+0x106>

// Write from programming buffer

__boot_page_write_short((uint16_t)(void*)address);

3f32: f6 01 movw r30, r12

3f34: a7 be out 0x37, r10 ; 55

3f36: e8 95 spm

boot_spm_busy_wait();

3f38: 07 b6 in r0, 0x37 ; 55

3f3a: 00 fc sbrc r0, 0

3f3c: fd cf rjmp .-6 ; 0x3f38 <main+0x138>

#if defined(RWWSRE)

// Reenable read access to flash

boot_rww_enable();

3f3e: 97 be out 0x37, r9 ; 55

3f40: e8 95 spm

3f42: 26 c0 rjmp .+76 ; 0x3f90 <main+0x190>

#endif

}

/* Read memory block mode, length is big endian. */

else if(ch == STK_READ_PAGE) {

3f44: 84 37 cpi r24, 0x74 ; 116

3f46: b1 f4 brne .+44 ; 0x3f74 <main+0x174>

// READ PAGE - we only read flash

getch(); /* getlen() */

3f48: 2e d0 rcall .+92 ; 0x3fa6 <getch>

length = getch();

3f4a: 2d d0 rcall .+90 ; 0x3fa6 <getch>

3f4c: f8 2e mov r15, r24

getch();

3f4e: 2b d0 rcall .+86 ; 0x3fa6 <getch>

verifySpace();

3f50: 3c d0 rcall .+120 ; 0x3fca <verifySpace>

3f52: f6 01 movw r30, r12

3f54: ef 2c mov r14, r15

putch(result);

address++;

}

while (--length);

#else

do putch(pgm_read_byte_near(address++));

3f56: 8f 01 movw r16, r30

3f58: 0f 5f subi r16, 0xFF ; 255

3f5a: 1f 4f sbci r17, 0xFF ; 255

3f5c: 84 91 lpm r24, Z+

3f5e: 1b d0 rcall .+54 ; 0x3f96 <putch>

while (--length);

3f60: ea 94 dec r14

3f62: f8 01 movw r30, r16

3f64: c1 f7 brne .-16 ; 0x3f56 <main+0x156>

#define rstVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+4))

#define wdtVect (*(uint16_t*)(RAMSTART+SPM_PAGESIZE*2+6))

#endif

/* main program starts here */

int main(void) {

3f66: 08 94 sec

3f68: c1 1c adc r12, r1

3f6a: d1 1c adc r13, r1

3f6c: fa 94 dec r15

3f6e: cf 0c add r12, r15

3f70: d1 1c adc r13, r1

3f72: 0e c0 rjmp .+28 ; 0x3f90 <main+0x190>

#endif

#endif

}

/* Get device signature bytes */

else if(ch == STK_READ_SIGN) {

3f74: 85 37 cpi r24, 0x75 ; 117

3f76: 39 f4 brne .+14 ; 0x3f86 <main+0x186>

// READ SIGN - return what Avrdude wants to hear

verifySpace();

3f78: 28 d0 rcall .+80 ; 0x3fca <verifySpace>

putch(SIGNATURE_0);

3f7a: 8e e1 ldi r24, 0x1E ; 30

3f7c: 0c d0 rcall .+24 ; 0x3f96 <putch>

putch(SIGNATURE_1);

3f7e: 84 e9 ldi r24, 0x94 ; 148

3f80: 0a d0 rcall .+20 ; 0x3f96 <putch>

putch(SIGNATURE_2);

3f82: 86 e0 ldi r24, 0x06 ; 6

3f84: 7a cf rjmp .-268 ; 0x3e7a <main+0x7a>

}

else if (ch == 'Q') {

3f86: 81 35 cpi r24, 0x51 ; 81

3f88: 11 f4 brne .+4 ; 0x3f8e <main+0x18e>

// Adaboot no-wait mod

watchdogConfig(WATCHDOG_16MS);

3f8a: 88 e0 ldi r24, 0x08 ; 8

3f8c: 18 d0 rcall .+48 ; 0x3fbe <watchdogConfig>

verifySpace();

}

else {

// This covers the response to commands like STK_ENTER_PROGMODE

verifySpace();

3f8e: 1d d0 rcall .+58 ; 0x3fca <verifySpace>

}

putch(STK_OK);

3f90: 80 e1 ldi r24, 0x10 ; 16

3f92: 01 d0 rcall .+2 ; 0x3f96 <putch>

3f94: 65 cf rjmp .-310 ; 0x3e60 <main+0x60>

00003f96 <putch>:

}

}

void putch(char ch) {

3f96: 98 2f mov r25, r24

#ifndef SOFT_UART

while (!(UCSR0A & _BV(UDRE0)));

3f98: 80 91 c0 00 lds r24, 0x00C0

3f9c: 85 ff sbrs r24, 5

3f9e: fc cf rjmp .-8 ; 0x3f98 <putch+0x2>

UDR0 = ch;

3fa0: 90 93 c6 00 sts 0x00C6, r25

[uartBit] "I" (UART_TX_BIT)

:

"r25"

);

#endif

}

3fa4: 08 95 ret

00003fa6 <getch>:

[uartBit] "I" (UART_RX_BIT)

:

"r25"

);

#else

while(!(UCSR0A & _BV(RXC0)))

3fa6: 80 91 c0 00 lds r24, 0x00C0

3faa: 87 ff sbrs r24, 7

3fac: fc cf rjmp .-8 ; 0x3fa6 <getch>

;

if (!(UCSR0A & _BV(FE0))) {

3fae: 80 91 c0 00 lds r24, 0x00C0

3fb2: 84 fd sbrc r24, 4

3fb4: 01 c0 rjmp .+2 ; 0x3fb8 <getch+0x12>

}

#endif

// Watchdog functions. These are only safe with interrupts turned off.

void watchdogReset() {

__asm__ __volatile__ (

3fb6: a8 95 wdr

* don't care that an invalid char is returned...)

*/

watchdogReset();

}

ch = UDR0;

3fb8: 80 91 c6 00 lds r24, 0x00C6

LED_PIN |= _BV(LED);

#endif

#endif

return ch;

}

3fbc: 08 95 ret

00003fbe <watchdogConfig>:

"wdr\n"

);

}

void watchdogConfig(uint8_t x) {

WDTCSR = _BV(WDCE) | _BV(WDE);

3fbe: e0 e6 ldi r30, 0x60 ; 96

3fc0: f0 e0 ldi r31, 0x00 ; 0

3fc2: 98 e1 ldi r25, 0x18 ; 24

3fc4: 90 83 st Z, r25

WDTCSR = x;

3fc6: 80 83 st Z, r24

}

3fc8: 08 95 ret

00003fca <verifySpace>:

do getch(); while (--count);

verifySpace();

}

void verifySpace() {

if (getch() != CRC_EOP) {

3fca: ed df rcall .-38 ; 0x3fa6 <getch>

3fcc: 80 32 cpi r24, 0x20 ; 32

3fce: 19 f0 breq .+6 ; 0x3fd6 <verifySpace+0xc>

watchdogConfig(WATCHDOG_16MS); // shorten WD timeout

3fd0: 88 e0 ldi r24, 0x08 ; 8

3fd2: f5 df rcall .-22 ; 0x3fbe <watchdogConfig>

3fd4: ff cf rjmp .-2 ; 0x3fd4 <verifySpace+0xa>

while (1) // and busy-loop so that WD causes

; // a reset and app start.

}

putch(STK_INSYNC);

3fd6: 84 e1 ldi r24, 0x14 ; 20

}

3fd8: de cf rjmp .-68 ; 0x3f96 <putch>

00003fda <getNch>:

::[count] "M" (UART_B_VALUE)

);

}

#endif

void getNch(uint8_t count) {

3fda: 1f 93 push r17

3fdc: 18 2f mov r17, r24

do getch(); while (--count);

3fde: e3 df rcall .-58 ; 0x3fa6 <getch>

3fe0: 11 50 subi r17, 0x01 ; 1

3fe2: e9 f7 brne .-6 ; 0x3fde <getNch+0x4>

verifySpace();

3fe4: f2 df rcall .-28 ; 0x3fca <verifySpace>

}

3fe6: 1f 91 pop r17

3fe8: 08 95 ret

00003fea <appStart>:

WDTCSR = _BV(WDCE) | _BV(WDE);

WDTCSR = x;

}

void appStart() {

watchdogConfig(WATCHDOG_OFF);

3fea: 80 e0 ldi r24, 0x00 ; 0

3fec: e8 df rcall .-48 ; 0x3fbe <watchdogConfig>

__asm__ __volatile__ (

3fee: ee 27 eor r30, r30

3ff0: ff 27 eor r31, r31

3ff2: 09 94 ijmp