Assembly

Instructions

Int32

Constants

• const [n:int]: push n

Stack Operations

• dup: duplicate
• get [n:int]: get the nth element
  • if n is non-negative, count from the bottom of the stack
  • if n is negative, count from the top of the stack
• set [n:int]: set the nth element
  • if n is non-negative, count from the bottom of the stack
  • if n is negative, count from the top of the stack
• drop

Bitwise Operations

• not: bitwise not
• and: bitwise and
• or: bitwise or
• xor: bitwise xor
• shl: shift left
• shr_u: shift right (unsigned)
• shr_s: shift left (signed)

Arithmetic Operations

• add: add
• sub: subtract
• mul10: multiply 10, but faster than mul
• mul: multiply

Comparison Operations

• eqz: equal to 0
• nez: not equal to 0
• eq: equal to
• lt_s: less than (signed)
• le_s: less than or equal to (signed)
• lt_u: less than (unsigned)
• le_u: less than or equal to (unsigned)
• gt_s: greater than (signed)
• ge_s: greater than or equal to (signed)
• gt_u: greater than (unsigned)
• ge_u: greater than or equal to (unsigned)

Input/Output Operations

• scan
• print

Control Instructions

• jump [l:label]: jump to l
• jz [l:label]: jump if zero
• jnz [l:label]: jump if not zero
• jeq [l:label]: jump if equal