Assembler Directives and Pseudo-Operations
.DWORD Pseudo-Operation
.DWORD Pseudo-Operation
The .DWORD pseudo-operation reserves storage and initializes it to the given value.
Syntax
.DWORD [ init_value[ , init_value] ...]
Parameters
init_value An absolute expression, a decimal, octal, or hexadecimal number, or a sequence of ASCII characters surrounded by quotation marks. If you omit the initializing value, the Assembler initializes the area to zero.
Discussion
The .DWORD pseudo-operation requests 64 bits of storage. If the location counter is not properly aligned on a boundary for a data item of that size, the Assembler advances the location counter to the next multiple of that item's size before reserving the area.
When you label the pseudo-operation, the label refers to the first byte of the storage area. Operands separated by commas initialize successive units of storage.
Example
The first pseudo-operation advances the current subspace's location counter to a double word boundary, allocates a double word of storage labeled F and initializes that double word to minus 64 (2s complement). The second pseudo-operation initializes a double word of storage to the hexadecimal number 6effffff12345678.
F .DWORD 64
.DWORD 0X6effffff12345678