Absolute address. The execution address of the region is specified by the base designator.

Increase the alignment constraint for the execution region from 4 to alignment. alignment must be a positive power of 2. If the execution region has a base_address then this must be alignment aligned. If the execution region has a +offset then the linker aligns the calculated base address of the region to an alignment boundary.

Increases the alignment of sections within the execution region.

The value must be a positive power of 2 and must be greater than or equal to 4.

Specifies the maximum size within the execution region that armlink can fill with unassigned sections. You can use a simple expression to specify the max_size. That is, you cannot use functions such as ImageLimit().

Be aware of the following restrictions when using this keyword:

Reserves an empty block of memory of a given size in the execution region, typically used by a heap or stack. No section can be placed in a region with the EMPTY attribute.

length represent a stack that grows down in memory. If the length is given as a negative value, the base_address is taken to be the end address of the region.

Creates a linker generated region containing a value. If you specify FILL, you must give a value, for example: FILL 0xFFFFFFFF. The FILL attribute replaces the following combination: EMPTY ZEROPAD PADVALUE.

In certain situations, for example, simulation, this is preferable to spending a long time in a zeroing loop.

Fixed address. The linker attempts to make the execution address equal the load address. This makes the region a root region. If this is not possible the linker produces an error.

RW data compression is enabled by default. The NOCOMPRESS keyword enables you to specify that RW data in an execution region must not be compressed in the final image.

Use for sections with overlaying address ranges. If consecutive execution regions have the same +offset then they are given the same base address.

Defines the value of any padding. If you specify PADVALUE, you must give a value, for example:

EXEC 0x10000 PADVALUE 0xFFFFFFFF EMPTY ZEROPAD 0x2000

This creates a region of size 0x2000 full of 0xFFFFFFFF.

PADVALUE must be a word in size. PADVALUE attributes on load regions are ignored.

This region contains only position independent sections.

Specifies the sorting algorithm for the execution region, for example:

ER1 +0 SORTTYPE CallTree

Use to create execution regions containing uninitialized data or memory-mapped I/O.

Zero-initialized sections are written in the ELF file as a block of zeros and, therefore, do not have to be zero-filled at runtime.

This sets the load length of a ZI output section to Image$$region_name$$ZI$$Length.

Only root execution regions can be zero-initialized using the ZEROPAD attribute. Using the ZEROPAD attribute with a non root execution region generates a warning and the attribute is ignored.

In certain situations, for example, simulation, this is preferable to spending a long time in a zeroing loop.