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debug: implement symtab generation

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Use pyelftools to extract the symbol table from the
link stage executable. Then, filter out the function names
and sort them based on their offsets before writing into the
`symtab.c`, this is similar to how the `isr_tables` works.

To access the structure, simply include the new header:
```c
#include <zephyr/debug/symtab.h>
```

Signed-off-by: Yong Cong Sin <ycsin@meta.com>
This commit is contained in:
Yong Cong Sin 2024-05-18 16:45:44 +08:00 • committed by Anas Nashif
commit e1ce0aefff
9 changed files with 276 additions and 0 deletions
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7
doc/releases/release-notes-3.7.rst
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@ -323,6 +323,13 @@ Devicetree
Libraries / Subsystems
**********************
* Debug
* symtab
* By enabling :kconfig:option:`CONFIG_SYMTAB`, the symbol table will be
generated with Zephyr link stage executable on supported architectures.
* Management
* hawkBit