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Restrictions on placing __at sections

There are restrictions when placing __at sections at specific addresses.

The following restrictions apply:

  • __at section address ranges must not overlap, unless the overlapping sections are placed in different overlay regions.

  • __at sections are not permitted in position independent execution regions.

  • You must not reference the linker-defined symbols $$Base, $$Limit and $$Length of an __at section.

  • __at sections must not be used in Base Platform Application Binary Interface (BPABI) executables and BPABI dynamically linked libraries (DLLs).

  • __at sections must have an address that is a multiple of their alignment.

  • __at sections ignore any +FIRST or +LAST ordering constraints.