db.md

Add Binary Data d*

db - Data Byte

Adds data byte-by-byte to your code.

Add a single number

_('db', 1);

Result:

000 main:
001     db 0x01                                 ; 000000|000000 1 bytes

Repeat a number 3 times

_('db', 1, 3);

Result:

000 main:
001     db 0x01, 0x01, 0x01                     ; 000000|000000 3 bytes

Add an array treating each element as a byte

_('db', [1, 2, 3]);

Repeat the array 3 times

_('db', [1, 2, 3], 3);

Copy buffer contents to your code

_('db', buf);
_('db', Buffer.alloc('foo'));

Repeat buffer multiple times

_('db', buf, 3);

Add string to your code

_('db', 'foo');

Specify string encoding

_('db', 'foo', 'utf8');

Add string twice

_('db', 'foo', 2);
_('db', 'foo', 'utf8', 2);

dw - Data Word

Adds data to your code two bytes at a time.

Add 2-byte number to your code using default endiannes

_('dw', 1);

Force little-endian or big-endian ordering

_('dw', 1, true);
_('dw', 1, false);

Result:

000 main:
001     db 0x01, 0x00                           ; 000000|000000 2 bytes
002     db 0x00, 0x01                           ; 000002|000002 2 bytes

Add an array treating each element as a 2-byte unsigned integer using big-endian ordering

_('dw', [1, 2, 3], false);

dd - Data Double

Adds data to your code 4 bytes at a time.

Works the same as dw, only treats each number as a 4-byte unsigned integer.

dq - Data Quad

Adds data to your code 8 bytes at a time.

Works the same as dw, only treats each number as a 8-byte unsigned integer.

You can specify 64-bit unsigned integers using [hi, lo] 2-tuples:

_('dq', [[0xff, 0xffffffff], [0xee, 0xeeeeeeee]]);