gecko-dev/build/unix/elfhack
Tom Tromey 5538d692d3 Bug 1286877 - do not set c-basic-offset for python-mode; r=gps
This removes the unnecessary setting of c-basic-offset from all
python-mode files.

This was automatically generated using

    perl -pi -e 's/; *c-basic-offset: *[0-9]+//'

... on the affected files.

The bulk of these files are moz.build files but there a few others as
well.

MozReview-Commit-ID: 2pPf3DEiZqx

--HG--
extra : rebase_source : 0a7dcac80b924174a2c429b093791148ea6ac204
2016-07-14 10:16:42 -06:00
..
inject Bug 1286877 - do not set c-basic-offset for python-mode; r=gps 2016-07-14 10:16:42 -06:00
Makefile.in
README
dummy.c
elf.cpp
elfhack.cpp
elfxx.h
inject.c
moz.build Bug 1286877 - do not set c-basic-offset for python-mode; r=gps 2016-07-14 10:16:42 -06:00
test-array.c
test-ctors.c
test.c

README

Elfhack is a program to optimize ELF binaries for size and cold startup
speed.

Presently, it is quite experimental, though it works well for the target
it was created for: Firefox's libxul.so.

Elfhack currently only does one thing: packing dynamic relocations ;
which ends up being a quite complex task, that can be summarized this
way:
- Remove RELATIVE relocations from the .rel.dyn/.rela.dyn section.
- Inject a small code able to apply relative relocations "by hand"
  after the .rel.dyn/.rela.dyn section.
- Inject a section containing relocative relocations in a different
  and more packed format, after the small code.
- Register the small code as DT_INIT function. Make the small code call
  what was initially the DT_INIT function, if there was one.
- Remove the hole between the new section containing relative
  relocations and the following sections, adjusting offsets and base
  addresses accordingly.
- Adjust PT_LOAD entries to fit new offsets, and add an additional
  PT_LOAD entry when that is necessary to handle the discrepancy between
  offsets and base addresses, meaning the section offsets may yet again
  need adjustments.
- Adjust various DT_* dynamic tags to fit the new ELF layout.
- Adjust section headers.
- Adjust ELF headers.

See http://glandium.org/blog/?p=1177#relocations for some figures.