Fantom Virtual Machine

FVM is a register-based, object-oriented virtual machine that also supports floating-point operation for Fantom project.

FVM Instruction List

There are features that have not been added yet, and we plan to create and update them.

1. MOV

ex) mov r0 r15
ex) mov r15 fe37h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
mov	4bit Register	4bit Register	-	-	v
mov	8bit Register	8bit Register	-	-	v
mov	8bit Register	8bit Value	-	-	v
mov	8bit Register	16bit Value	-	-	v
mov	8bit Register	32bit Value	-	-	v
mov	8bit Register	64bit Value	-	-	v
mov	8bit Ref-Reg.	Registers	-	-	-
mov	8bit Ref-Reg.	64bit Value	-	-	-
mov	64bit Ref-Val.	Registers	-	-	-
mov	8bit Register	Ref-Vals	-	-	-
mov-obj	8bit Register	8bit Register	-	-	-
load-obj	8bit Register	8bit Register	-	Load obj from obj repo	-
store-obj	8bit Register	8bit Register	-	store obj from obj repo	-

2. ADDI

ex) addi r28 r78
ex) addi r30 ffffh

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
addi	4bit Register	4bit Register	-	-	v
addi	8bit Register	8bit Register	-	-	v
addi	8bit Register	8bit Value	-	-	-
addi	8bit Register	16bit Value	-	-	-
addi	8bit Register	32bit Value	-	-	-
addi	8bit Register	64bit Value	-	-	-

3. ADDF

ex) addf r28 r78
ex) addf r30 ffffh

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
addf	4bit Register	4bit Register	-	-	v
addf	8bit Register	8bit Register	-	-	v
addf	8bit Register	8bit Value	-	-	-
addf	8bit Register	16bit Value	-	-	-
addf	8bit Register	32bit Value	-	-	-
addf	8bit Register	64bit Value	-	-	-

4. SUBI

ex) subi r2 r7
ex) subi r3 57h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
subi	4bit Register	4bit Register	-	-	v
subi	8bit Register	8bit Register	-	-	v
subi	8bit Register	8bit Value	-	-	-
subi	8bit Register	16bit Value	-	-	-
subi	8bit Register	32bit Value	-	-	-
subi	8bit Register	64bit Value	-	-	-

5. SUBF

ex) subf r2 r7
ex) subf r3 57h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
subf	4bit Register	4bit Register	-	-	v
subf	8bit Register	8bit Register	-	-	v
subf	8bit Register	8bit Value	-	-	-
subf	8bit Register	16bit Value	-	-	-
subf	8bit Register	32bit Value	-	-	-
subf	8bit Register	64bit Value	-	-	-

6. MULI

ex) muli r2 r7

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
muli	4bit Register	4bit Register	-	-	v
muli	8bit Register	8bit Register	-	-	v
muli	8bit Register	8bit Value	-	-	-
muli	8bit Register	16bit Value	-	-	-
muli	8bit Register	32bit Value	-	-	-
muli	8bit Register	64bit Value	-	-	-

7. MULF

ex) mulf r22 r17

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
mulf	4bit Register	4bit Register	-	-	v
mulf	8bit Register	8bit Register	-	-	v
mulf	8bit Register	8bit Value	-	-	-
mulf	8bit Register	16bit Value	-	-	-
mulf	8bit Register	32bit Value	-	-	-
mulf	8bit Register	64bit Value	-	-	-

8. DIVI

ex) divi r22 r17

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
divi	4bit Register	4bit Register	-	-	v
divi	8bit Register	8bit Register	-	-	v
divi	8bit Register	8bit Value	-	-	-
divi	8bit Register	16bit Value	-	-	-
divi	8bit Register	32bit Value	-	-	-
divi	8bit Register	64bit Value	-	-	-

8. DIVF

ex) divf r22 r17

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
divf	4bit Register	4bit Register	-	-	v
divf	8bit Register	8bit Register	-	-	v
divf	8bit Register	8bit Value	-	-	-
divf	8bit Register	16bit Value	-	-	-
divf	8bit Register	32bit Value	-	-	-
divf	8bit Register	64bit Value	-	-	-

9. JMP_EQ

ex) jmp_eq r22 r17 1023h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
jmp_eq	4bit Register	4bit Register	16bit Value	-	v
jmp_eq	8bit Register	8bit Register	16bit Value	-	v
jmp_eq	4bit Register	4bit Register	32bit Value	-	v
jmp_eq	8bit Register	8bit Register	32bit Value	-	v

10. JMP_NE

ex) jmp_ne r2 r17 fe37h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
jmp_ne	4bit Register	4bit Register	16bit Value	-	v
jmp_ne	8bit Register	8bit Register	16bit Value	-	v
jmp_ne	4bit Register	4bit Register	32bit Value	-	v
jmp_ne	8bit Register	8bit Register	32bit Value	-	v

11. JMP_GT

ex) jmp_gt r22 r19 fe370f21h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
jmp_gt	4bit Register	4bit Register	16bit Value	-	v
jmp_gt	8bit Register	8bit Register	16bit Value	-	v
jmp_gt	4bit Register	4bit Register	32bit Value	-	v
jmp_gt	8bit Register	8bit Register	32bit Value	-	v

12. JMP_GE

ex) jmp_ge r22 r19 fe370f21h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
jmp_ge	4bit Register	4bit Register	16bit Value	-	v
jmp_ge	8bit Register	8bit Register	16bit Value	-	v
jmp_ge	4bit Register	4bit Register	32bit Value	-	v
jmp_ge	8bit Register	8bit Register	32bit Value	-	v

13. JMP_LT

ex) jmp_lt r22 r19 fe370f21h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
jmp_lt	4bit Register	4bit Register	16bit Value	-	v
jmp_lt	8bit Register	8bit Register	16bit Value	-	v
jmp_lt	4bit Register	4bit Register	32bit Value	-	v
jmp_lt	8bit Register	8bit Register	32bit Value	-	v

14. JMP_LE

ex) jmp_le r22 r19 fe370f21h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
jmp_le	4bit Register	4bit Register	16bit Value	-	v
jmp_le	8bit Register	8bit Register	16bit Value	-	v
jmp_le	4bit Register	4bit Register	32bit Value	-	v
jmp_le	8bit Register	8bit Register	32bit Value	-	v

15. NEW - Create new instance of object

ex) new ffh 37h e7h
ex) new c736h 37h e7h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
new	8bit Value	8bit Value	8bit Value	-	-
new	16bit Value	8bit Value	8bit Value	-	-

16. CALL - Call a method of object

ex) call_static ffh 37h e7h
ex) call_dynamic c7h 15h f0h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
call_static	8bit Value	8bit Value	8bit Value	-	-
call_dynamic	8bit Value	8bit Value	8bit Value	-	-

17. LOAD - Get a value of the instance

ex) load r32 r27 ffh ex) load r15 r7 7c3fh

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
load	8bit Register	8bit Register	8bit Value	-	-
load	8bit Register	8bit Register	16bit Value	-	-

18. STORE - Set a value of a instance

ex) store r32 r27 ffh ex) store r15 r7 7c3fh

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
store	8bit Register	8bit Register	8bit Value	-	-
store	8bit Register	8bit Register	16bit Value	-	-

19. RET

ex) ret r35 ex) ret r4 ex) ret 37h ex) ret 371f2c39h

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
ret	8bit Register	-	-	-	-
ret	8bit Value	-	-	-	-
ret	16bit Value	-	-	-	-
ret	32bit Value	-	-	-	-
ret	64bit Value	-	-	-	-

20. MOVRET

ex) movret r35

Command	Operand 1	Operand 2	Operand 3	Description	Implementation
movret	8bit Register	-	-	-	-