ISA

[c71n93]

Type

ChaiVM is register-based VM with one accumulator register

Instruction types (for decoding)

TODO

Basic operations

Nop

• Nop - nop)

Ret

• Ret - returns from current function

Mov

• Mov ri, rj - moves value from the register ri to the register rj

Load/Store accumulator

Lda - loads value to accumulator

• Ldia [i] - loads constant integer [i] to accumulator
• Ldra [i] - loads the register ri to accumulator

Sta - stores value of accumulator somewhere.

• Star ri - stores value of accumulator in register ri

Arithmetic

Add

• Add ri - adds the accumulator to value of the register ri, stores result in the accumulator
• Addi [i] - adds the accumulator to value of the constant [i], stores result in the accumulator

Sub

• Sub ri - subtracts the accumulator from the register ri, stores result in the accumulator
• Subi [i] - subtracts the accumulator from the constant [i], stores result in the accumulator

Mul

• Mul ri - multiplies the accumulator on the register ri, stores result in accumulator
• Muli [i] - multiplies the accumulator on the constant [i], stores result in accumulator

Div

• Div ri - divides the register ri on the accumulator, stores result in accumulator
• Divi [i] - divides constant [i] on the accumulator, stores result in accumulator

Intrinsics

to be continued ...