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IAR Embedded Workbench for RX 5.20

Object attributes

In this section:

These object attributes are available:

  • Object attributes that can be used for variables:

    __no_alloc, __no_alloc16, __no_alloc_str, __no_alloc_str16, __no_init, __ro_placement

  • Object attributes that can be used for functions and variables:

    location, @, __root, __weak

  • Object attributes that can be used for functions:

    __absolute, __intrinsic, __nested, __noreturn, __ramfunc, vector

You can specify as many object attributes as required for a specific function or data object.

For more information about location and @, see Controlling data and function placement in memory. For more information about vector, see vector.

Syntax for object attributes

The object attribute must be placed in front of the type. For example, to place myarray in memory that is not initialized at startup:

__no_init int myarray[10];

The #pragmaobject_attribute directive can also be used. This declaration is equivalent to the previous one:

#pragma object_attribute=__no_init
int myarray[10];

Note

Object attributes cannot be used in combination with the typedef keyword.