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Reuse of veneers when scatter-loading

The linker reuses veneers whenever possible, but there are some limitations on the reuse of veneers in protected load regions and overlaid execution regions.

A scatter file enables you to create regions that share the same area of RAM:

  • If you use the PROTECTED keyword for a load region it prevents:

    • overlapping of load regions

    • veneer sharing

    • string sharing with the --merge option.

  • If you use the OVERLAY keyword for a region, no other execution region can reuse a veneer placed in an overlay execution region.

If it is not possible to reuse a veneer, new veneers are created instead. Unless you have instructed the linker to place veneers somewhere specific using scatter-loading, a veneer is always placed in the execution region that contains the call requiring the veneer.

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