Zilog ZUSBOPTS Manual de usuario descargar pdf (Pagina 299)

100

101

UM017105-0511 Linker Commands

Zilog Developer Studio II – ZNEO™

User Manual

271

SORT

The SORT command sorts the external symbol listing in the map file by name or address

order. The default is to sort in ascending order by name.

Syntax

DOWN>

NAME

indicates sorting by symbol name.

ADDRESS indicates sorting by symbol address.

Examples

The following examples show how to sort the symbol listing by the address in ascending

order:

SORT ADDRESS ASCENDING

-SORT ADDRESS = UP

SPLITTABLE

The SPLITTABLE command allows (but does not force) the linker to split a segment into

noncontiguous pieces to fit into available memory slots. Splitting segments can be helpful

in reducing the overall memory requirements of the project. However, problems can arise

if a noncontiguous segment is copied from one space to another using the

COPY command.

The linker issues a warning if it is asked to

COPY any noncontiguous segment.

SPLITTABLE is not specified for a given segment, the linker allocates the entire seg-

ment contiguously.

The SPLITTABLE command takes precedence over the ORDER and SEQUENCE com-

mands.

By default, ZDS II segments are nonsplittable. When multiple segments are made splitta-

ble, the linker might re-order segments regardless of what is specified in the ORDER (or

SEQUENCE) command. In this case, you must perform one of following actions:

•

Modify the memory map of the system so there is only one discontinuity and only one

splittable segment in which case the ORDER command is followed

•

Modify the project so a specific ordering of segments is not required, in which case

multiple segments can be marked splittable

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