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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef AGS_SHARED_SCRIPT_CC_INTERNAL_H
#define AGS_SHARED_SCRIPT_CC_INTERNAL_H
namespace AGS3 {
#define SCOM_VERSION 90
#define SCOM_VERSIONSTR "0.90"
// virtual CPU registers
#define SREG_SP 1 // stack pointer
#define SREG_MAR 2 // memory address register
#define SREG_AX 3 // general purpose
#define SREG_BX 4
#define SREG_CX 5
#define SREG_OP 6 // object pointer for member func calls
#define SREG_DX 7
#define CC_NUM_REGISTERS 8
// virtual CPU commands
#define SCMD_ADD 1 // reg1 += arg2
#define SCMD_SUB 2 // reg1 -= arg2
#define SCMD_REGTOREG 3 // reg2 = reg1
#define SCMD_WRITELIT 4 // m[MAR] = arg2 (copy arg1 bytes)
#define SCMD_RET 5 // return from subroutine
#define SCMD_LITTOREG 6 // set reg1 to literal value arg2
#define SCMD_MEMREAD 7 // reg1 = m[MAR]
#define SCMD_MEMWRITE 8 // m[MAR] = reg1
#define SCMD_MULREG 9 // reg1 *= reg2
#define SCMD_DIVREG 10 // reg1 /= reg2
#define SCMD_ADDREG 11 // reg1 += reg2
#define SCMD_SUBREG 12 // reg1 -= reg2
#define SCMD_BITAND 13 // bitwise reg1 & reg2
#define SCMD_BITOR 14 // bitwise reg1 | reg2
#define SCMD_ISEQUAL 15 // reg1 == reg2 reg1=1 if true, =0 if not
#define SCMD_NOTEQUAL 16 // reg1 != reg2
#define SCMD_GREATER 17 // reg1 > reg2
#define SCMD_LESSTHAN 18 // reg1 < reg2
#define SCMD_GTE 19 // reg1 >= reg2
#define SCMD_LTE 20 // reg1 <= reg2
#define SCMD_AND 21 // (reg1!=0) && (reg2!=0) -> reg1
#define SCMD_OR 22 // (reg1!=0) || (reg2!=0) -> reg1
#define SCMD_CALL 23 // jump to subroutine at reg1
#define SCMD_MEMREADB 24 // reg1 = m[MAR] (1 byte)
#define SCMD_MEMREADW 25 // reg1 = m[MAR] (2 bytes)
#define SCMD_MEMWRITEB 26 // m[MAR] = reg1 (1 byte)
#define SCMD_MEMWRITEW 27 // m[MAR] = reg1 (2 bytes)
#define SCMD_JZ 28 // jump if ax==0 to arg1
#define SCMD_PUSHREG 29 // m[sp]=reg1; sp++
#define SCMD_POPREG 30 // sp--; reg1=m[sp]
#define SCMD_JMP 31 // jump to arg1
#define SCMD_MUL 32 // reg1 *= arg2
#define SCMD_CALLEXT 33 // call external (imported) function reg1
#define SCMD_PUSHREAL 34 // push reg1 onto real stack
#define SCMD_SUBREALSTACK 35 // decrement stack ptr by literal
#define SCMD_LINENUM 36 // debug info - source code line number
#define SCMD_CALLAS 37 // call external script function
#define SCMD_THISBASE 38 // current relative address
#define SCMD_NUMFUNCARGS 39 // number of arguments for ext func call
#define SCMD_MODREG 40 // reg1 %= reg2
#define SCMD_XORREG 41 // reg1 ^= reg2
#define SCMD_NOTREG 42 // reg1 = !reg1
#define SCMD_SHIFTLEFT 43 // reg1 = reg1 << reg2
#define SCMD_SHIFTRIGHT 44 // reg1 = reg1 >> reg2
#define SCMD_CALLOBJ 45 // next call is member function of reg1
#define SCMD_CHECKBOUNDS 46 // check reg1 is between 0 and arg2
#define SCMD_MEMWRITEPTR 47 // m[MAR] = reg1 (adjust ptr addr)
#define SCMD_MEMREADPTR 48 // reg1 = m[MAR] (adjust ptr addr)
#define SCMD_MEMZEROPTR 49 // m[MAR] = 0 (blank ptr)
#define SCMD_MEMINITPTR 50 // m[MAR] = reg1 (but don't free old one)
#define SCMD_LOADSPOFFS 51 // MAR = SP - arg1 (optimization for local var access)
#define SCMD_CHECKNULL 52 // error if MAR==0
#define SCMD_FADD 53 // reg1 += arg2 (float,int)
#define SCMD_FSUB 54 // reg1 -= arg2 (float,int)
#define SCMD_FMULREG 55 // reg1 *= reg2 (float)
#define SCMD_FDIVREG 56 // reg1 /= reg2 (float)
#define SCMD_FADDREG 57 // reg1 += reg2 (float)
#define SCMD_FSUBREG 58 // reg1 -= reg2 (float)
#define SCMD_FGREATER 59 // reg1 > reg2 (float)
#define SCMD_FLESSTHAN 60 // reg1 < reg2 (float)
#define SCMD_FGTE 61 // reg1 >= reg2 (float)
#define SCMD_FLTE 62 // reg1 <= reg2 (float)
#define SCMD_ZEROMEMORY 63 // m[MAR]..m[MAR+(arg1-1)] = 0
#define SCMD_CREATESTRING 64 // reg1 = new String(reg1)
#define SCMD_STRINGSEQUAL 65 // (char*)reg1 == (char*)reg2 reg1=1 if true, =0 if not
#define SCMD_STRINGSNOTEQ 66 // (char*)reg1 != (char*)reg2
#define SCMD_CHECKNULLREG 67 // error if reg1 == NULL
#define SCMD_LOOPCHECKOFF 68 // no loop checking for this function
#define SCMD_MEMZEROPTRND 69 // m[MAR] = 0 (blank ptr, no dispose if = ax)
#define SCMD_JNZ 70 // jump to arg1 if ax!=0
#define SCMD_DYNAMICBOUNDS 71 // check reg1 is between 0 and m[MAR-4]
#define SCMD_NEWARRAY 72 // reg1 = new array of reg1 elements, each of size arg2 (arg3=managed type?)
#define SCMD_NEWUSEROBJECT 73 // reg1 = new user object of arg1 size
#define CC_NUM_SCCMDS 74
#define MAX_SCMD_ARGS 3 // maximal possible number of arguments
#define EXPORT_FUNCTION 1
#define EXPORT_DATA 2
#define FIXUP_NOFIXUP 0 // no-op
#define FIXUP_GLOBALDATA 1 // code[fixup] += &globaldata[0]
#define FIXUP_FUNCTION 2 // code[fixup] += &code[0]
#define FIXUP_STRING 3 // code[fixup] += &strings[0]
#define FIXUP_IMPORT 4 // code[fixup] = &imported_thing[code[fixup]]
#define FIXUP_DATADATA 5 // globaldata[fixup] += &globaldata[0]
#define FIXUP_STACK 6 // code[fixup] += &stack[0]
// Script file signature
#define ENDFILESIG 0xbeefcafe
} // namespace AGS3
#endif
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