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Add get_app_at_slot method to retrieve descriptor for any index #9

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Merged
jerrysxie merged 1 commit into from
Mar 25, 2025
Merged

Add get_app_at_slot method to retrieve descriptor for any index #9

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2 changes: 1 addition & 1 deletion .github/workflows/check.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -204,7 +204,7 @@ jobs:
fail-fast: false
matrix:
commit: ${{ fromJSON(needs.commit_list.outputs.commits) }}
msrv: ["1.79"] # We're relying on namespaced-features, which
msrv: ["1.84"] # We're relying on namespaced-features, which
# was released in 1.60
#
# We also depend on `fixed' which requires rust
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10 changes: 10 additions & 0 deletions src/lib.rs
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Expand Up @@ -187,6 +187,16 @@ impl BootableRegionDescriptors {
)
.unwrap()
}

/// Get descriptor for a specific app slot
pub fn get_app_at_slot(&self, app_slot: u32) -> Result<AppImageDescriptor, ParseError> {
if app_slot >= self.header.num_app_slots {
return Err(ParseError::InvalidAppSlot);
}

// can't fail as BootableRegionDescriptors only constructs if all app descriptors are valid
AppImageDescriptor::from_region(self.header.app_descriptor_base_address as *const u32, app_slot)
}
}

impl BootableRegionDescriptorHeader {
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