Memory Segment

Use the memory segment to divide available memory into segments. The following listing shows the pattern.

MEMORY {

    segment_1 (RWX): ORIGIN = 0x80001000, LENGTH = 0x19000

    segment_2 (RWX): ORIGIN = AFTER(segment_1), LENGTH = 0

    segment_x (RWX): ORIGIN = memory address, LENGTH = segment size

     and so on...

}

In this pattern:

• The ( RWX) portion consists of ELF-access permission flags: R = read, W = write, or X = execute.
• ORIGIN specifies the start address of the memory segment, either an actual memory address or, via the AFTER keyword, the name of the preceding segment.
• LENGTH specifies the size of the memory segment. The value 0 means unlimited length.

The segment_2 line of the following listing shows how to use the AFTER and LENGTH commands to specify a memory segment, even though you do not know the starting address or exact length.

For more information about the memory segment, refer to the topic "MEMORY" on page 151 of this manual.