VSMX
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Description
Virtual Script Machine Instructions (VSMX) file
Used on:
- RAF file (and so, on Coldboot.raf) with a filename extension .jsx
- some PSP rco
History:
does also have a VSMX decompile option (rcomage vsmxdec --decompile) but it's very buggy and usually doesn't work right (Try hex editing the version? (at 0x4) from 0x20000 to 0x10000.).
File Layout
(section naming need to 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?
|
| 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 |
Compiled instructions
- Instructions length: 8 bytes
Instructions format should be wikifyed.
| 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 | - | - |
Compare Operators
May be move later to PlayStation_JavaScript or make it as template
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 | <= |
- http://es5.github.io/#x11.9.3 The Abstract Equality Comparison Algorithm
- http://es5.github.io/#x11.9.6 The Strict Equality Comparison Algorithm
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