.assert. freescale SC100 Linker

Freescale Semiconductor, Inc.

SCLinker.book Page 31 Thursday, September 23, 2004 10:55 AM

Linker Command File

Linker Directives

Parameter

n

Byte boundary. Must be a power of 2.

Remarks

If the sections within a segment also have their own alignment, the linker may align the segment to a slightly higher address than that specified by the .align directive.

Example

.org _CodeStart

.align 16

.segment .libtext, “.libtext"

.assert

Evaluates the specified expression. If the expression is not true (evaluates to 0), it is a link error.

.assert expression

Parameter

expression

Expression to be evaluated.

Remarks

This directive is useful for restricting or checking the maximum size of a segment.

For example, the .assert directive in the following example specifies that the

INTVEC segment (the interrupt vector table) must be exactly 512 bytes. If it is not, the linker reports an error.

Example

.org 0

.segment INTVEC, “.intvec"

.assert @segsize(INTVEC) == 512

31 SC100 Linker User Guide

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