I am new to avr asm programming. I have written a small program in avr assembly. I am targetting the attiny2313 chip. Here is my code:
avr.s:

1. .org 0x00
2. jmp main
3. add:
4. ldi r16,1
5. ldi r17,2
6. add r16,r17
7. ret
8. main:
9. call add
10. nop
11. rjmp main

But when I compile with avr-gas like this:

avr-as -mmcu=attiny2313 -o avr.o avr.s​

I get these error messages:

avr.s: Assembler messages:
avr.s:2: Error: illegal opcode asr for mcu attiny2313
avr.s:9: Error: illegal opcode jmp for mcu attiny2313​

But in the offical datasheet, avr does have JMP and CALL instruction so why do I get these error messages??

 

Attiny2313 has only rjmp ( relative) and ijmp ( indexed) jump instructions. And for call only rcall, icall