Difference between revisions of "VM instructions / opcodes"

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|1
 
|1
 
|no
 
|no
 +
|0
 +
|
 +
|-
 +
|DVAR
 +
|0x46
 +
|1
 +
|no
 +
|2
 +
|
 +
|-
 +
|LONGCODESTART
 +
|0x47
 +
|1
 +
|no
 +
|0
 +
|
 +
|-
 +
|PUSHV
 +
|0x48
 +
|3
 +
|yes
 +
|0+
 +
|
 +
|-
 +
|POPV
 +
|0x49
 +
|3
 +
|yes
 +
|0+
 +
|
 +
|-
 +
|PUSHDBG
 +
|0x4a
 +
|3
 +
|yes
 +
|0+
 +
|
 +
|-
 +
|PUSHP
 +
|0x4b
 +
|3
 +
|yes
 +
|0+
 +
|
 +
|-
 +
|PUSHTAG
 +
|0x4c
 +
|2
 +
|yes
 +
|0+
 +
|
 +
|-
 +
|PUSHACT
 +
|0x4d
 +
|3
 +
|yes
 +
|0+
 +
|
 +
|-
 +
|PUSHI
 +
|0x4e
 +
|3
 +
|yes
 +
|0
 +
|
 +
|-
 +
|PUSHII
 +
|0x4f
 +
|3
 +
|yes
 +
|0
 +
|
 +
|-
 +
|PUSHF
 +
|0x50
 +
|3
 +
|yes
 +
|0
 +
|
 +
|-
 +
|JMP
 +
|0x51
 +
|3
 +
|yes
 +
|0
 +
|
 +
|-
 +
|POPCMPYEQJMP
 +
|0x52
 +
|3
 +
|yes
 +
|1
 +
|
 +
|-
 +
|POPCMPYLOWJMP
 +
|0x53
 +
|3
 +
|yes
 +
|1
 +
|
 +
|-
 +
|POPCMPYLOWEQJMP
 +
|0x54
 +
|3
 +
|yes
 +
|1
 +
|
 +
|-
 +
|POPCMPYHIGHJMP
 +
|0x55
 +
|3
 +
|yes
 +
|1
 +
|
 +
|-
 +
|POPCMPYHIGHEQJMP
 +
|0x56
 +
|3
 +
|yes
 +
|1
 +
|
 +
|-
 +
|POP2CMPYBTWNJMP
 +
|0x57
 +
|3
 +
|yes
 +
|2
 +
|
 +
|-
 +
|CALL
 +
|0x58
 +
|3
 +
|yes
 +
|0+args
 +
|
 +
|-
 +
|CALLACT
 +
|0x59
 +
|3
 +
|yes
 +
|1+args
 +
|
 +
|-
 +
|POPXJMP
 +
|0x5a
 +
|3
 +
|yes
 +
|1
 +
|
 +
|-
 +
|POPXCJMP
 +
|0x5b
 +
|3
 +
|yes
 +
|1
 +
|
 +
|-
 +
|POPXNCJMP
 +
|0x5c
 +
|3
 +
|yes
 +
|1
 +
|
 +
|-
 +
|CALLPOPA
 +
|0x5d
 +
|3
 +
|yes
 +
|0+args
 +
|
 +
|-
 +
|CALLACTPOPA
 +
|0x5e
 +
|3
 +
|yes
 +
|1+args
 +
|
 +
|-
 +
|REQALL
 +
|0x5f
 +
|3
 +
|yes
 +
|0
 +
|
 +
|-
 +
|JMPINTERNAL
 +
|0x60
 +
|3
 +
|yes
 +
|0
 +
|
 +
|-
 +
|REQWAITALL
 +
|0x61
 +
|3
 +
|yes
 +
|0
 +
|
 +
|-
 +
|INCINITTAG
 +
|0x62
 +
|3
 +
|yes
 +
|0
 +
|
 +
|-
 +
|REQIALL
 +
|0x63
 +
|3
 +
|yes
 
|0
 
|0
 
|
 
|

Revision as of 13:31, 15 July 2019

Final Fantasy XII VM supports 100 known opcodes. There are three types of instructions. Instructions with an immediate, which are 3 bytes long, instructions without immediate, which are 1 byte long and special instructions like NOP and LABEL that have a defined size of zero and thus can't be used, because it causes the VM to loop indefinitely. These are probably used only by compiler and never put in the code itself.

Name Opcode Size Immediate Arguments Description
NOP 0x00 0 no 0 Don't use. It causes eternal loop
LABEL 0x01 0 no 0 Don't use. It causes eternal loop
TAG 0x02 0 no 0 Don't use. It causes eternal loop
SYSHALT 0x03 1 no 0
SYSTEM 0x04 1 no 1
OPLOR 0x05 1 no 2 Logical or
OPLAND 0x06 1 no 2 Logical and
OPOR 0x07 1 no 2 Binary or
OPEOR 0x08 1 no 2 Binary exclusive or
OPAND 0x09 1 no 2 Binary and
OPEQ 0x0a 1 no 2 Compares whether two values on stack are equal
OPNE 0x0b 1 no 2 Compares whether two values on stack are not equal
OPGT 0x0c 1 no 2 Compares whether second value on stack is greater than first
OPLS 0x0d 1 no 2 Compares whether second value on stack is less than first
OPGTE 0x0e 1 no 2 Compares whether second value on stack is greater or equal to first
OPLSE 0x0f 1 no 2 Compares whether second value on stack is less or equal to first
OPSLL 0x10 1 no 2 Shift left logical
OPSRL 0x11 1 no 2 Shift right logical
OPADD 0x12 1 no 2 Addition
OPSUB 0x13 1 no 2 Substraction
OPMUL 0x14 1 no 2 Multiplication
OPDIV 0x15 1 no 2 Division
OPMOD 0x16 1 no 2 Modulo
OPNOT 0x17 1 no 1 Logical negation
OPBNOT 0x18 1 no 1 Binary negation
OPUMINUS 0x19 1 no 1 Not used
OPFIXADRS 0x1a 1 no 1 Not used
PUSHA 0x1b 1 no 0 Pushes contents of A register to stack
POPA 0x1c 1 no 0 Pops stack into A register
PUSHX 0x1d 1 no 0 Pushes contents of X register to stack
PUSHY 0x1e 1 no 0 Pushes contents of Y register to stack
POPX 0x1f 1 no 0 Pops stack into X register
POPY 0x20 1 no 0 Pops stack into Y register
REQ 0x21 1 no 3
FREQ 0x22 1 no 3
TREQ 0x23 1 no 3
REQSW 0x24 1 no 3
FREQSW 0x25 1 no 3
TREQSW 0x26 1 no 3
REQEW 0x27 1 no 3
FREQEW 0x28 1 no 3
TREQEW 0x29 1 no 3
PREQ 0x2a 1 no 3
PREQSW 0x2b 1 no 3
PREQEW 0x2c 1 no 3
RET 0x2d 1 no 0
RETN 0x2e 1 no 0
RETT 0x2f 1 no 0
RETTN 0x30 1 no 0
DRET 0x31 1 no 0
REQWAIT 0x32 1 no 2
PREQWAIT 0x33 1 no 2
REQCHG 0x34 1 no 2
REQCANCEL 0x35 1 no 2
POPI0 0x36 1 no 0
POPI1 0x37 1 no 0
POPI2 0x38 1 no 0
POPI3 0x39 1 no 0
POPF0 0x3a 1 no 0
POPF1 0x3b 1 no 0
POPF2 0x3c 1 no 0
POPF3 0x3d 1 no 0
PUSHI0 0x3e 1 no 0
PUSHI1 0x3f 1 no 0
PUSHI2 0x40 1 no 0
PUSHI3 0x41 1 no 0
PUSHF0 0x42 1 no 0
PUSHF1 0x43 1 no 0
PUSHF2 0x44 1 no 0
PUSHF3 0x45 1 no 0
DVAR 0x46 1 no 2
LONGCODESTART 0x47 1 no 0
PUSHV 0x48 3 yes 0+
POPV 0x49 3 yes 0+
PUSHDBG 0x4a 3 yes 0+
PUSHP 0x4b 3 yes 0+
PUSHTAG 0x4c 2 yes 0+
PUSHACT 0x4d 3 yes 0+
PUSHI 0x4e 3 yes 0
PUSHII 0x4f 3 yes 0
PUSHF 0x50 3 yes 0
JMP 0x51 3 yes 0
POPCMPYEQJMP 0x52 3 yes 1
POPCMPYLOWJMP 0x53 3 yes 1
POPCMPYLOWEQJMP 0x54 3 yes 1
POPCMPYHIGHJMP 0x55 3 yes 1
POPCMPYHIGHEQJMP 0x56 3 yes 1
POP2CMPYBTWNJMP 0x57 3 yes 2
CALL 0x58 3 yes 0+args
CALLACT 0x59 3 yes 1+args
POPXJMP 0x5a 3 yes 1
POPXCJMP 0x5b 3 yes 1
POPXNCJMP 0x5c 3 yes 1
CALLPOPA 0x5d 3 yes 0+args
CALLACTPOPA 0x5e 3 yes 1+args
REQALL 0x5f 3 yes 0
JMPINTERNAL 0x60 3 yes 0
REQWAITALL 0x61 3 yes 0
INCINITTAG 0x62 3 yes 0
REQIALL 0x63 3 yes 0
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