pTAL Reference Manual (H06.03+)

Structures

HP pTAL Reference Manual—523746-005

9-49

Using Simple Pointers

REFALIGNED

specifies the base alignment of the structures that the structure pointer will

reference.

references a structure that might not be well-aligned.

indicates that the base of the structure and the fields in the structure are well

aligned in memory

Topics:

•

Using Simple Pointers on page 9-49

•

Assigning Addresses to Pointers in Structures on page 9-50

Using Simple Pointers

The data type determines the size of data a simple pointer can access at a time.

The addressing mode and data type determine the kind of address the simple pointer

can contain.

Example 9-39. Simple Pointers Within a Structure

STRUCT my_struct;

BEGIN

FIXED .std_pointer; ! Standard simple pointer

STRING .EXT ext_pointer; ! Extended simple pointer

END;

Table 9-6. Data Accessed by Simple Pointers

Data Type Accessed Data

STRING Byte

INT Word

INT(32) Doubleword

REAL Doubleword

REAL(64) Quadrupleword

FIXED Quadrupleword