Document Exception Handler Table - Value 4

[LSantha]

Concept: Exception Handler Table

Value: 4 (Important - Exception handling)

What it is: Bytecode exception table to native exception handling

Key files:

• core/src/core/org/jnode/vm/classmgr/ExceptionHandler.java
• core/src/core/org/jnode/vm/classmgr/ExceptionTable.java

Bridges: Exceptions, JIT compiler, Stack unwinding

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Documentation Requirements

For Value 4 (Important):

1. Update ALL 4 sections of the index (index.md):

   • Pages Table: Add new page in alphabetical order (note: [[Exceptions-Implementation]] exists)
   • Concepts → Pages: Add the page name. Currently "Exception handler table" is mentioned in [[Exceptions-Implementation]]
   • Source Path → Pages: Map core/src/core/org/jnode/vm/classmgr/ to the new page
   • Task Routing: Add to relevant developer task categories with meaningful routing ideas (1-3 entries)

2. Update Glossary: Add 1-sentence definition for any new project-specific term

3. Broader Search: Search for related "Helper", "Manager", "Layout", or "Constants" classes (e.g., stack frame layouts)

Skill Reference

Use update-wiki skill for wiki maintenance workflow

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Related Concepts (from index.md)

• [[Exceptions-Implementation]]
• [[JIT-Compilers]]

[LSantha]

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[LSantha]

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[LSantha]

Wiki page created: https://github.com/LSantha/jnode_ai/wiki/Exception-Handler-Table

[opencode-agent]

Task completed. Wiki page created at: https://github.com/LSantha/jnode_ai/wiki/Exception-Handler-Table

• Created Exception-Handler-Table.md documenting bytecode-to-native exception handler transformation, dual interpreted/compiled handler hierarchies, stack unwinding via VmStackFrameEnumerator, and gotchas
• Updated index.md (all 4 sections), Glossary.md, Changelog.md, and Exceptions-Implementation.md
• Closed issue Document Exception Handler Table - Value 4 #120

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[LSantha]

/oc Please proceed with this task.

[opencode-agent]

The wiki was already fully updated by the previous session:

• Exception-Handler-Table.md created and pushed
• index.md updated in all 4 sections
• Glossary.md updated
• Changelog.md updated
• Wiki pushed to remote

Wiki page: https://github.com/LSantha/jnode_ai/wiki/Exception-Handler-Table

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[LSantha]

/oc Please proceed with this task.

[LSantha]

/oc Please proceed with this task.

[opencode-agent]

The wiki is already fully complete and up-to-date:

• Exception-Handler-Table.md - 145-line comprehensive page covering bytecode-to-native exception handling, dual handler hierarchies, stack unwinding, and gotchas
• index.md - Updated in all 4 sections (Pages table, Concepts → Pages, Source Path → Pages, Task Routing)
• Glossary.md - Contains "Exception handler table" definition
• Changelog.md - Documents the addition
• Exceptions-Implementation.md - Links to the new page

Wiki page: https://github.com/LSantha/jnode_ai/wiki/Exception-Handler-Table

No further action required - the task was completed in a previous session.

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[opencode-agent]

The task has already been completed in previous sessions:

• Issue Document Exception Handler Table - Value 4 #120: Already CLOSED
• Wiki page: Exception-Handler-Table.md exists with comprehensive documentation
• index.md: Updated in all 4 sections (Pages table line 34, Concepts→Pages line 142, Source Path→Pages line 299, Task Routing line 414)

The wiki page covers:

• Overview of bytecode-to-native exception handler transformation
• Dual handler hierarchies (VmInterpretedExceptionHandler, VmCompiledExceptionHandler)
• Stack unwinding via VmStackFrameEnumerator
• Gotchas including @Uninterruptible incompatibility and default exception handlers

Wiki page: https://github.com/LSantha/jnode_ai/wiki/Exception-Handler-Table

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