README.md

Welcome to ARMSIM!

ARMSIM is a basic ARM Assembly SIMulator written completely in Python.

---

Usage

ARM code:

main: cmp r0, #3
 	  beq end
 	  add r0, r0, #1
 	  bal main
end:

Command line:

python arm.py {yourfile}

Output:

Executing :  ['ETIQ', ['MAIN']]
Executing :  ['CMP', ['r0', '#3']]
Executing :  ['BEQ', ['fin']]
Executing :  ['ADD', ['r0', 'r0', '#1']]
Executing :  ['BAL', ['main']]
Executing :  ['ETIQ', ['MAIN']]
Executing :  ['CMP', ['r0', '#3']]
Executing :  ['BEQ', ['fin']]
Executing :  ['ADD', ['r0', 'r0', '#1']]
Executing :  ['BAL', ['main']]
Executing :  ['ETIQ', ['MAIN']]
Executing :  ['CMP', ['r0', '#3']]
Executing :  ['BEQ', ['fin']]
Executing :  ['ADD', ['r0', 'r0', '#1']]
Executing :  ['BAL', ['main']]
Executing :  ['ETIQ', ['MAIN']]
Executing :  ['CMP', ['r0', '#3']]
Executing :  ['BEQ', ['fin']]
Executing :  ['ETIQ', ['FIN']]
Executing :  ['@', ['']]
r0 = 3

---

Detecting Errors

The Lexer and the parser are both capable of tracing errors precisely.

Example:

mov r0, #1
mov r1, #2
- mov r2, #
mov r3, #4

Command line:

python arm.py {yourfile}

Output:

Could not execute the instruction at line: 3

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