Description

Virtual Script Machine Instructions (VSMX) file layout (naming should be wikifyed):

VSMX header
Compiled code/instructions
Data/String constants
(method) name table/Object property
global symbols/Variable/function names

Header

Offset	Size	Example (h)	Value (conversion)	Notes
0x00	0x04	0x56534D58	"VSMX"	Magic
0x04	0x04	0x00000200	0002.0000	Version? v1.0 on PSP RCO RCOs (from video/music UMDs and two lftv RCOs in the PSP's flash0/vsh/ressource/.)? V2.0 on PS3 PSJS (.jsx)
0x08	0x04	0x34000000	0x34 (52)	header length
0x0C	0x04	-		length of compiled code/instructions section
0x10	0x04	-		offset of data section
0x14	0x04	-		length of data
0x18	0x04	-		number of data(seen: 1 or 2)
0x1C	0x04	-		offset of name table
0x20	0x04	-		length of name
0x24	0x04	-		number of name
0x28	0x04	-		offset of global symbols
0x2C	0x04	-		length of global symbols
0x30	0x04	-		number of global symbols

HEX code format should be wikifyed, may be table moved to (later).

ByteCode (short)	Instruction Name	Note1	Note2
0x00	NOP	-	-
0x01	ASSGN	-	-
0x02	ADD	-	-
0x03	SUB	-	-
0x04	MUL	-	-
0x05	DIV	-	-
0x06	MOD	-	-
0x07	TO_NUMBER	-	-
0x08	CSIGN	-	-
0x09	NOT	-	-
0x0A	INC	-	-
0x0B	DEC	-	-
0x0C	POST_INC	-	-
0x0D	POST_DEC	-	-
0x0E	CMPEQ	Compare Operators	-
0x0F	CMPNEQ	Compare Operators	-
0x10	CMPSEQ	Compare Operators	-
0x11	CMPSNEQ	Compare Operators	-
0x12	CMPLT	Compare Operators	-
0x13	CMPLE	Compare Operators	-
0x14	CMPGE	Compare Operators	-
0x15	CMPGT	Compare Operators	-
0x16	INSTANCEOF	-	-
0x17	IN	-	-
0x18	TYPEOF	-	-
0x19	BIT_AND	-	-
0x1A	BIT_XOR	-	-
0x1B	BIT_OR	-	-
0x1C	BIT_NOT	-	-
0x1D	LSHIFT	-	-
0x1E	S_RSHIFT	-	-
0x1F	U_RSHIFT	-	-
0x20	COPY	-	-
0x21	SWAP	-	-
0x22	REMOVE	-	-
0x23	PUSH_UNDEFINED	-	-
0x24	PUSH_NULL	-	-
0x25	PUSH_BOOL	-	-
0x26	PUSH_INT	-	-
0x27	PUSH_FLOAT	-	-
0x28	PUSH_STRING	-	-
0x29	PUSH_OBJECT	-	-
0x2A	PUSH_FUNC	-	-
0x2B	PUSH_ARRAY	-	-
0x2C	PUSH_THIS	-	-
0x2D	PUSH_LOCAL	-	-
0x2E	PUSH_GLOBAL	-	-
0x2F	GETATTR	-	-
0x30	GETATTR_KEEPOBJ	-	-
0x31	SETATTR	-	-
0x32	DELATTR	-	-
0x33	APPEND_ATTR	-	-
0x34	GETITEM	-	-
0x35	GETITEM_KEEPOBJ	-	-
0x36	SETITEM	-	-
0x37	DELITEM	-	-
0x38	APPEND_ITEM	-	-
0x39	JUMP	-	-
0x3A	JUMPT	-	-
0x3B	JUMPF	-	-
0x3C	CALL_FUNC	-	-
0x3D	CALL_METHOD	-	-
0x3E	CALL_CONSTRUCTOR	-	-
0x3F	RET	-	-
0x40	THROW	-	-
0x41	TRYBLK_IN	-	-
0x42	TRYBLK_OUT	-	-
0x43	CATCH_FINALLYBLK_IN	-	-
0x44	CATCH_FINALLYBLK_OUT	-	-
0x45	HALT	-	-
0x46	DEBUG_FILE	-	-
0x47	DEBUG_LINE	-	-
0x48	GETITEM_KEEPOBJNAME	-	-
0x49	PUSH_VECTOR	-	-
0x4A	GET_VECTOR_ELEMENT	-	-
0x4B	GET_VECTOR_ELEMENT_KEEPVECTOR	-	-
0x4C	ASSGN_VECTOR_ELEMENT	-	-
0x4D	SETATTR_VECTOR_ELEMENT	-	-
0x4E	SETITEM_VECTOR_ELEMENT	-	-

Comparison and Logical operators are used to test for true or false.

Compare For:	Operators	Bytecode (PSJS)	Syntax (JS)
Equality	cmpeq	0x0E	==
Strict Equal value and equal type	cmpseq	0x10	===
Inequality	cmpneq	0x0F	!=
Strict not equal value or not equal type	cmpsneq	0x11	!==
Greater Than	cmpgt	0x15	>
Greater Than or Equal To	cmpge	0x14	>=
Less Than	cmplt	0x12	<
Less Than or Equal To	cmple	0x13	<=