Usage

avrcycles.py temp.avra

Example output:

Total number of cycles: 6
Total number of instructions: 4

Detailed Usage

• generate disassembly from the .elf file

  avr-objdump -h -S board.elf > board.avra
  

  • -h: list space used by each section
  • -S: output the binary (assembly code) with source code (C code)

• paste the snippet of assembly to analyze into a file

  • example assembly snippet:

  Note

  I usually call this snippet file temp.avra so I know it’s safe to delete later

  • in the above example, only the four high-lighted lines of code are analyzed

    • the parser in avrcycles.py ignores the first two lines because they are not assembly
    • non-assembly lines are included in the .avra because of the -S flag

• run avrcycles.py from the command line (e.g., from bash)

  avrcycles.py temp.avra
  

• example output:

  Total number of cycles: 6
  Total number of instructions: 4