Commit Graph

5 Commits

Author SHA1 Message Date
Rich Felker 976c0fdcb5 remove init/fini array asm from arm crti/crtn files
this code has been replaced by portable C code that works on all
archs. the old asm needs to be removed or ctors/dtors will run twice.
2013-07-21 03:48:35 -04:00
Rich Felker d432b2c057 fix regression that made shared libs crash on arm 2013-02-03 01:26:33 -05:00
Rich Felker 34aa169dcf add support for ctors/dtors on arm with modern gcc
a while back, gcc switched from using the old _init/_fini fragments
method for calling ctors and dtors on arm to the __init_array and
__fini_array method. unfortunately, on glibc this depends on ugly
hacks involving making libc.so a linker script and pulling parts of
libc into the main program binary. so I cheat a little bit, and just
write asm to iterate over the init/fini arrays from the _init/_fini
asm. the same approach could be used on any arch it's needed on, but
for now arm is the only one.
2012-12-07 23:04:49 -05:00
Rich Felker 9abab94b21 fix arm crti/crtn code
lr must be saved because init/fini-section code from the compiler
clobbers it. this was not a problem when i tested without gcc's
crtbegin/crtend files present, but with them, musl on arm fails to
work (infinite loop in _init).
2012-06-25 16:06:09 -04:00
Rich Felker 4ce3cb5cdd add support for init/finit (constructors and destructors)
this is mainly in hopes of supporting c++ (not yet possible for other
reasons) but will also help applications/libraries which use (and more
often, abuse) the gcc __attribute__((__constructor__)) feature in "C"
code.

x86_64 and arm versions of the new startup asm are untested and may
have minor problems.
2012-02-06 14:39:09 -05:00