Employs the same linkonce magic of sw_isr_table to fix the
multiple definition of the symtab variables issue that I
get in my application build that doesn't use `west`.
Signed-off-by: Yong Cong Sin <ycsin@meta.com>
`start_addr` is the address of the first symbol, rename it to
`first_addr` instead as it seems more intuitive and relatable
to the comments.
Signed-off-by: Yong Cong Sin <ycsin@meta.com>
Append new entry to the symtab list only if it has unique
address.
Added a bit more comments and move the debug print to after
the list is sorted.
Signed-off-by: Yong Cong Sin <ycsin@meta.com>
The `symtab_find_symbol_name()` is using an adapted binary
search function to get the entry between 2 addresses, we need
to add a dummy entry at the end so that the search function
can remain simple and straightforward without doing
out-of-bound checks:
20 \
|
|
50 x
|
|
90 x
. |
. |
. |
dummy /
Signed-off-by: Yong Cong Sin <ycsin@meta.com>
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>
