Lua Files

The lua files were introduced in Call of Duty: Black Ops II and it has appeared on every Call of Duty since. It is only available as its own asset type on Ghosts and Advanced Warfare. On Black Ops 2, however, it is stored as a rawfile. This asset is used for the game menus.

struct LuaFile
{
  const char *name;
  int len;
  char strippingType;
  const char *buffer;
};

The binary data is then passed to the Virtual Machine (VM) to be ran. Now for the header of the binary data.

struct LuaHeader
{
  char magic[8];
  char version;
  char swapEndian;
  char sizeOfInt;
  char sizeOfSize;
  char sizeOfLuaN;
  char sizeOfNumber;
  char numberIntegralCode;
  char bytecodeSharingMode;
};

Opcodes

Opcode	Number	Mode	A	B	C
HKS_OPCODE_GETFIELD	0x0	iABC	Used	Register	Constant
HKS_OPCODE_TEST	0x1	iABC	Used	Not Used	Used
HKS_OPCODE_CALL_I	0x2	iABC	Used	Used	Used
HKS_OPCODE_CALL_C	0x3	iABC	Used	Used	Used
HKS_OPCODE_EQ	0x4	iABC	Not Used	Register/Constant	Register
HKS_OPCODE_EQ_BK	0x5	iABC	Not Used	Register/Constant	Register
HKS_OPCODE_GETGLOBAL	0x6	iABx	Used	Constant	Used
HKS_OPCODE_MOVE	0x7	iABC	Used	Register	Not Used
HKS_OPCODE_SELF	0x8	iABC	Used	Register	Register
HKS_OPCODE_RETURN	0x9	iABC	Used	Used	Not Used
HKS_OPCODE_GETTABLE_S	0xa	iABC	Used	Register	Register
HKS_OPCODE_GETTABLE_N	0xb	iABC	Used	Register	Register
HKS_OPCODE_GETTABLE	0xc	iABC	Used	Register	Register
HKS_OPCODE_LOADBOOL	0xd	iABC	Used	Used	Used
HKS_OPCODE_TFORLOOP	0xe	iABC	Used	Not Used	Used
HKS_OPCODE_SETFIELD	0xf	iABC	Used	Constant	Register
HKS_OPCODE_SETTABLE_S	0x10	iABC	Used	Register/Constant	Register
HKS_OPCODE_SETTABLE_S_BK	0x11	iABC	Used	Register/Constant	Register
HKS_OPCODE_SETTABLE_N	0x12	iABC	Used	Register/Constant	Register
HKS_OPCODE_SETTABLE_N_BK	0x13	iABC	Used	Register/Constant	Register
HKS_OPCODE_SETTABLE	0x14	iABC	Used	Register/Constant	Register
HKS_OPCODE_SETTABLE_BK	0x15	iABC	Used	Register/Constant	Register
HKS_OPCODE_TAILCALL_I	0x16	iABC	Used	Used	Used
HKS_OPCODE_TAILCALL_C	0x17	iABC	Used	Used	Used
HKS_OPCODE_TAILCALL_M	0x18	iABC	Used	Used	Used
HKS_OPCODE_LOADK	0x19	iABx	Used	Constant	Not Used
HKS_OPCODE_LOADNIL	0x1a	iABC	Used	Register	Not Used
HKS_OPCODE_SETGLOBAL	0x1b	iABx	Used	Constant	Not Used
HKS_OPCODE_JMP	0x1c	iAsBx	Not Used	Jump Offset	Not Used
HKS_OPCODE_CALL_M	0x1d	iABC	Used	Used	Used
HKS_OPCODE_CALL	0x1e	iABC	Used	Used	Used
HKS_OPCODE_INTRINSIC_INDEX	0x1f	iABC	Used	Used	Used
HKS_OPCODE_INTRINSIC_NEWINDEX	0x20	iABC	Used	Used	Used
HKS_OPCODE_INTRINSIC_SELF	0x21	iABC	Used	Used	Used
HKS_OPCODE_INTRINSIC_INDEX_LITERAL	0x22	iABC	Used	Used	Used
HKS_OPCODE_INTRINSIC_NEWINDEX_LITERAL	0x23	iABC	Used	Used	Used
HKS_OPCODE_INTRINSIC_SELF_LITERAL	0x24	iABC	Used	Used	Used
HKS_OPCODE_TAILCALL	0x25	iABC	Used	Used	Used
HKS_OPCODE_GETUPVAL	0x26	iABC	Used	Used	Not Used
HKS_OPCODE_SETUPVAL	0x27	iABC	Used	Used	Not Used
HKS_OPCODE_ADD	0x28	iABC	Used	Register/Constant	Register
HKS_OPCODE_ADD_BK	0x29	iABC	Used	Register/Constant	Register
HKS_OPCODE_SUB	0x2a	iABC	Used	Register/Constant	Register
HKS_OPCODE_SUB_BK	0x2b	iABC	Used	Register/Constant	Register
HKS_OPCODE_MUL	0x2c	iABC	Used	Register/Constant	Register
HKS_OPCODE_MUL_BK	0x2d	iABC	Used	Register/Constant	Register
HKS_OPCODE_DIV	0x2e	iABC	Used	Register/Constant	Register
HKS_OPCODE_DIV_BK	0x2f	iABC	Used	Register/Constant	Register
HKS_OPCODE_MOD	0x30	iABC	Used	Register/Constant	Register
HKS_OPCODE_MOD_BK	0x31	iABC	Used	Register/Constant	Register
HKS_OPCODE_POW	0x32	iABC	Used	Register/Constant	Register
HKS_OPCODE_POW_BK	0x33	iABC	Used	Register/Constant	Register
HKS_OPCODE_NEWTABLE	0x34	iABC	Used	Used	Used
HKS_OPCODE_UNM	0x35	iABC	Used	Register	Not Used
HKS_OPCODE_NOT	0x36	iABC	Used	Register	Not Used
HKS_OPCODE_LEN	0x37	iABC	Used	Register	Not Used
HKS_OPCODE_LT	0x38	iABC	Not Used	Register/Constant	Register
HKS_OPCODE_LT_BK	0x39	iABC	Not Used	Register/Constant	Register
HKS_OPCODE_LE	0x3a	iABC	Not Used	Register/Constant	Register
HKS_OPCODE_LE_BK	0x3b	iABC	Not Used	Register/Constant	Register
HKS_OPCODE_CONCAT	0x3c	iABC	Used	Used	Used
HKS_OPCODE_TESTSET	0x3d	iABC	Used	Register	Used
HKS_OPCODE_FORPREP	0x3e	iAsBx	Used	Jump Offset	Not Used
HKS_OPCODE_FORLOOP	0x3f	iAsBx	Used	Jump Offset	Not Used
HKS_OPCODE_SETLIST	0x40	iABC	Used	Used	Jump Offset
HKS_OPCODE_CLOSE	0x41	iABC	Used	Not Used	Not Used
HKS_OPCODE_CLOSURE	0x42	iABx	Used	Used	Not Used
HKS_OPCODE_VARARG	0x43	iABC	Used	Used	Not Used
HKS_OPCODE_TAILCALL_I_R1	0x44	iABC	Not Used	Used	Used
HKS_OPCODE_CALL_I_R1	0x45	iABC	Not Used	Used	Used
HKS_OPCODE_SETUPVAL_R1	0x46	iABC	Used	Used	Not Used
HKS_OPCODE_TEST_R1	0x47	iABC	Used	Not Used	Used
HKS_OPCODE_NOT_R1	0x48	iABC	Used	Register	Not Used
HKS_OPCODE_GETFIELD_R1	0x49	iABC	Used	Register	Constant
HKS_OPCODE_SETFIELD_R1	0x4a	iABC	Used	Constant	Register
HKS_OPCODE_NEWSTRUCT	0x4b	iABC	Used	Used	Used
HKS_OPCODE_DATA	0x4c	iABx	Not Used	Jump Offset	Not Used
HKS_OPCODE_SETSLOTN	0x4d	iABC	Used	Not Used	Used
HKS_OPCODE_SETSLOTI	0x4e	iABC	Used	Used	Register
HKS_OPCODE_SETSLOT	0x4f	iABC	Used	Used	Register
HKS_OPCODE_SETSLOTS	0x50	iABC	Used	Used	Register
HKS_OPCODE_SETSLOTMT	0x51	iABC	Used	Used	Register
HKS_OPCODE_CHECKTYPE	0x52	iABx	Used	Used	Not Used
HKS_OPCODE_CHECKTYPES	0x53	iABx	Used	Used	Not Used
HKS_OPCODE_GETSLOT	0x54	iABC	Used	Register	Used
HKS_OPCODE_GETSLOTMT	0x55	iABC	Used	Register	Used
HKS_OPCODE_SELFSLOT	0x56	iABC	Used	Register	Used
HKS_OPCODE_SELFSLOTMT	0x57	iABC	Used	Register	Used
HKS_OPCODE_GETFIELD_MM	0x58	iABC	Used	Register	Constant
HKS_OPCODE_CHECKTYPE_D	0x59	iABx	Used	Used	Not Used
HKS_OPCODE_GETSLOT_D	0x5a	iABC	Used	Register	Used
HKS_OPCODE_GETGLOBAL_MEM	0x5b	iABx	Used	Constant	Used