INSTRUCTIONS.md

Instructions

How to use instructions

1. What type do you need (byte/word/dword/qword, check TYPES.md)
2. Get operands (register/constant/variable)
3. Pass operands

Example:

// MOV_<Op1Type><Op2Type>(<type>, <Op1>, <Op2>);

int val = 0;
MOV_RC(T_LONG, EAX, 32);
MOV_VR(T_LONG, val, EAX);

print("val = %d\n", val); // val = 32

• R - register
• V - variable
• C - constant

Supported Instructions

TRASM does not support all instructions but we are trying to implement most of the most-needed instructions.

There's all of them:

(* - supported, - - not supported)

MOV

MOV <DST>, <SRC>

DEST	REG	CONST	VAR
REG	*	*	*
VAR	*	*	*

ADD

ADD <A>, <B>
Result in A.

DEST	REG	CONST	VAR
REG	*	*	*
VAR	*	*	-

SUB

SUB <A>, <B>
Result in B.

DEST	REG	CONST	VAR
REG	*	*	*
VAR	*	*	-

MUL

MUL <MULTIPLIER>

EAX = EAX * <MULTIPLIER>

Result in EAX.

REG	CONST	VAR
*	*	*

IMUL

IMUL <A>, <B>
Result in A.

DEST	REG	CONST	VAR
REG	*	*	*
VAR	-	-	-

DIV

DIV <DIVISOR>

RAX/EAX/AX - dividend
REG64/REG32/REG16 - divisor

REG	CONST	VAR
*	-	-

Result in RAX/EAX/AX. Remainder in RDX/EDX/DX.

IDIV

IDIV <DIVISOR>

RAX/EAX/AX - dividend
REG64/REG32/REG16 - divisor

REG	CONST	VAR
*	-	-

Result in RAX/EAX/AX.
Remainder in RDX/EDX/DX.

FLD

FLD <SRC>

REG	CONST	VAR
-	-	*

FSTP

FSTP <DST>

REG	CONST	VAR
-	-	*

FSQRT

FSQRT

FSIN

FSIN

FCOS

FCOS

FSINCOS

FSINCOS

FABS

FABS

SHR

SHR <DST>, <SRC>

DEST	REG	CONST	VAR
REG	*	*	-
VAR	-	*	-

SHL

SHL <DST>, <SRC>

DEST	REG	CONST	VAR
REG	*	*	-
VAR	-	*	-

AND

AND <A>, <B>

DEST	REG	CONST	VAR
REG	*	*	*
VAR	*	*	*

OR

OR <A>, <B>

DEST	REG	CONST	VAR
REG	*	*	*
VAR	*	*	*

NOT

NOT <A>

REG	CONST	VAR
*	-	*

XOR

XOR <A>, <B>

DEST	REG	CONST	VAR
REG	*	*	*
VAR	*	*	*

CMP

CMP <A>, <B>

1ST OP	REG	CONST	VAR
REG	*	*	*
VAR	*	*	-

SETBE

SETBE <A>

REG	VAR
*	-

NOTE: accepts only 8-bit registers.

LEA

LEA <A>, <B>

DEST	REG	VAR
REG	-	*
VAR	-	-