Appendix A. JWasm Reserved Words

Reserved Words are case-insensitive. Besides the items listed below all instruction mnemonics are also Reserved Words.

Registers 16- and 32-bit Modes

8-bit registers AL CL DL BL AH CH DH BH 16-bit registers AX CX DX BX SP BP SI DI 32-bit registers EAX ECX EDX EBX ESP EBP ESI EDI Segment registers ES CS SS DS FS GS Floating-point registers ST ST(1) ST(2) ST(3) ST(4) ST(5) ST(6) ST(7) MMX registers MM0 MM1 MM2 MM3 MM4 MM5 MM6 MM7 SSE registers XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 AVX registers YMM0 YMM1 YMM2 YMM3 YMM4 YMM5 YMM6 YMM7 Control registers CR0 CR2 CR3 CR4 Debug registers DR0 DR1 DR2 DR3 DR6 DR7 Test registers[1] TR3 TR4 TR5 TR6 TR7

[1]: invalid in 64-bit mode.

Additional Registers in 64-bit Mode

8-bit registers SPL BPL SIL DIL R8B R9B R10B R11B R12B R13B R14B R15B 16-bit registers R8W R9W R10W R11W R12W R13W R14W R15W 32-bit registers R8D R9D R10D R11D R12D R13D R14D R15D 64-bit registers RAX RCX RDX RBX RSP RBP RSI RDI R8 R9 R10 R11 R12 R13 R14 R15 SSE registers XMM8 XMM9 XMM10 XMM11 XMM12 XMM13 XMM14 XMM15 AVX registers YMM8 YMM9 YMM10 YMM11 YMM12 YMM13 YMM14 YMM15 Control registers CR8

Types

BYTE SBYTE WORD SWORD DWORD SDWORD REAL4 FWORD QWORD SQWORD REAL8 TBYTE REAL10 OWORD YMMWORD NEAR FAR NEAR16 NEAR32 FAR16 FAR32 MMWORD XMMWORD

Unary Operators

.TYPE HIGH HIGH32 HIGHWORD IMAGEREL[1] LENGTH LENGTHOF LOW LOW32 LOWWORD LROFFSET MASK OFFSET OPATTR SECTIONREL[1] SEG SHORT SIZE SIZEOF THIS TYPE WIDTH

[1]: not for OMF output format.

Binary Operators

EQ NE GE GT LE LT MOD PTR DUP SHL[1] SHR[1] AND[1] OR[1] XOR[1]

[1]: these keywords are also instructions.

Directives

.8086 .186 .286 .286C .286P .386 .386C .386P .486 .486P .586 .586P .686 .686P .K3D .MMX .XMM .X64 .X64P .8087 .287 .387 .NO87 .CREF .LIST .LISTALL .LISTIF, .LFCOND .NOCREF, .XCREF .NOLIST, .XLIST .NOLISTIF, .SFCOND .TFCOND PAGE SUBTITLE, SUBTTL TITLE .LISTMACRO, .XALL .LISTMACROALL, .LALL .NOLISTMACRO, .SALL .ALPHA .DOSSEG, DOSSEG .SEQ .CODE .STACK .DATA .DATA? .FARDATA .FARDATA? .CONST .IF .REPEAT .WHILE .BREAK .CONTINUE .ELSE .ELSEIF .ENDIF .ENDW .UNTIL .UNTILCXZ .EXIT .STARTUP .MODEL .RADIX .SAFESEH .ERR .ERR1 .ERR2 .ERRE .ERRNZ .ERRDIF .ERRDIFI .ERRIDN .ERRIDNI .ERRB .ERRNB .ERRDEF .ERRNDEF COMMENT IF IFE IF1 IF2 IFDIF IFDIFI IFIDN IFIDNI IFB IFNB IFDEF IFNDEF ELSE ELSEIF ELSEIFE ELSEIF1 ELSEIF2 ELSEIFDIF ELSEIFDIFI ELSEIFIDN ELSEIFIDNI ELSEIFB ELSEIFNB ELSEIFDEF ELSEIFNDEF ENDIF FOR, IRP FORC, IRPC REPEAT, REPT WHILE MACRO EXITM ENDM GOTO PURGE INCLUDE TEXTEQU CATSTR SUBSTR INSTR SIZESTR DB DW DD DF DQ DT STRUCT, STRUC UNION TYPEDEF RECORD COMM EXTERN, EXTRN EXTERNDEF PUBLIC PROTO PROC ENDP LOCAL LABEL INVOKE ORG ALIGN EVEN SEGMENT ENDS GROUP ASSUME ALIAS ECHO, %OUT END EQU INCBIN INCLUDELIB NAME OPTION POPCONTEXT PUSHCONTEXT

Additional Directives in 64-bit Mode

.ALLOCSTACK .ENDPROLOG .PUSHFRAME .PUSHREG .SAVEREG .SAVEXMM128 .SETFRAME

Other Reserved Words

ADDR FLAT VARARG FRAME[1] C SYSCALL[2] STDCALL PASCAL FORTRAN BASIC FASTCALL

[1]: in 64-bit mode only.
[2]: in 64-bit, calling convention SYSCALL is renamed to SYSCALL_, since in this mode there exists a SYSCALL instruction.