Texas Instruments TMS320C54x, User Manual

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Using UNION and GROUP Statements
7-47 Linker Description
7.10.2 Grouping Output Sections Together
The SECTIONS directive has a GROUP option that forces several output
sections to be allocated contiguously. For example, assume that a section
named
term_rec contains a termination record for a table in the .data section.
You can force the linker to allocate .data and term_rec together:
Example 7–9. Allocate Sections Together
SECTIONS
{
.text /* Normal output section */
.bss /* Normal output section */
GROUP 1000h : /* Specify a group of sections */
{
.data /* First section in the group */
term_rec /* Allocated immediately after .data */
}
}
You can use binding, alignment, or named memory to allocate a GROUP in the
same manner as a single output section. In the preceding example, the
GROUP is bound to word address 1000h. This means that .data is allocated
at word 1000h, and
term_rec follows it in memory.
Note: You Cannot Specify Addresses for Sections Within a GROUP
When you use the GROUP option, binding, alignment, or allocation into
named memory can be specified
for the group only. You cannot use binding,
named memory, or alignment for sections within a group.