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avoid explicit .filler section #217

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Merged
jonathanpallant merged 2 commits into from
Sep 4, 2026
Merged

avoid explicit .filler section #217

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ee70de5
avoid explicit .filler section
robamu Aug 28, 2026
2c38b96
Merge branch 'main' into no-explicit-filler-section
jonathanpallant Sep 4, 2026
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4 changes: 4 additions & 0 deletions aarch32-rt/CHANGELOG.md
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Expand Up @@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).

## [Unreleased]

### Changed

- Replaced .filler padding section with fixed offset for stack placement in link.x

## [aarch32-rt v0.4.0]

### Added
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18 changes: 6 additions & 12 deletions aarch32-rt/link.x
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Expand Up @@ -156,24 +156,18 @@ SECTIONS {

/* # Stack Padding
*
* A padding region to push the stacks to the top of the STACKS region.
* If `_pack_stacks == 0`, this is forced to be zero size, putting the
* stacks at the bottom of the STACK region.
* Compute where `.stacks` should start: at the top of the STACKS region,
* unless `_pack_stacks == 1`, in which case right where we already are.
*/
.filler (NOLOAD) : {
/* Move the .stacks section to the end of the STACKS memory region */
_next_region = ORIGIN(STACKS) + LENGTH(STACKS);
_start_moved_stacks = _next_region - SIZEOF(.stacks);
_start_stacks = _pack_stacks ? . : _start_moved_stacks;
FILL(0x00)
. = _start_stacks;
} > STACKS
_next_region = ORIGIN(STACKS) + LENGTH(STACKS);
_start_moved_stacks = _next_region - SIZEOF(.stacks);
_start_stacks = _pack_stacks ? . : _start_moved_stacks;

/* # Stacks
*
* Space for all seven stacks.
*/
.stacks (NOLOAD) : ALIGN(_stack_alignment)
.stacks _start_stacks (NOLOAD) : ALIGN(_stack_alignment)
{
. = ALIGN(_stack_alignment);

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