[PATCH dwarves v3 0/5] ELF writing changes

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These v3 patches address comments by Andrii and Arnaldo.

1. This uses a variadic macro and relies on a GNU extension. It can
probably be reworked to not use this, with some effort.

2. I was following the original code that had aliases structs and
pointers for the same data. I adjusted my code not to do this (later
commits) and changed the existing occurrences in the same function
(this commit). The net effect is clearer lifetime and ownership.

3. In a similar vein, the variable scn really only needed to be a
loop-local iterator.

4. This removes the dependency on llvm-objcopy.

5. And we set the alignment on the seciton.

I'm not posting the later patches that perform explicit ELF section
layout and which (attempt) to also do things with ELF segments.

Giuliano Procida (5):
  btf_encoder: Funnel ELF error reporting through a macro
  btf_encoder: Do not use both structs and pointers for the same data
  btf_encoder: Traverse sections using a for-loop
  btf_encoder: Add .BTF section using libelf
  btf_encoder: Align .BTF section to 8 bytes

 libbtf.c | 183 ++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 114 insertions(+), 69 deletions(-)

-- 
2.30.0.478.g8a0d178c01-goog




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