Javaduino

An Arduino Assembly Interpreter written in Java. This can be considered an HLE-like implementation of an AVR assembly emulation.

What it supports

• Basic arithmetic instructions (add, addi, inc, etc.)
• Basic register management instructions (ldi, mov, etc.)
• Jumping and branching (via jmp, breq, brne)
• Emulated SRAM memory stack such that push and pop are supported

What it does not support

• Call-saved/Call-clobbered registers
• GPIO pin emulation
• C-Style function calls
• Data Space instructions (sts, etc.)
• X, Y, Z pointers
• Interrupts
• Directly running compiled binaries (this is an Interpreter not a direct emulator)
• Certain GNU Assembler directives (ex. .data labels)

What user stories were completed this iteration?

• More arithmetic instructions were addded (ADDI, SUBI)
• Logical instructions were added (CP, LSL, LSR)
• Labels and global directives
• The ability to jump to labels
• The ability to branch to labels
• Register comparison for said branching
• SRAM stack emulation (PUSH and POP can be executed)

Is there anything that you implemented but doesn't currently work?

RET is technically implemented but it is not 100% compatible with Arduino Assembly. It doesn't obey call-saved registers, but it does propely end execution of assembly labels.

What commands are needed to compile and run your code from the command line?

A shell script is provided to run it, and a test Assembly File has been provided.

run without debug:

sh run.sh Test.S

run with debug:

sh run.sh Test.S -d

We have also added a demo of the Fibonacci Sequece

sh run.sh Fib.S