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add support for init/finit (constructors and destructors)

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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.
This commit is contained in:
Rich Felker 2012-02-06 14:39:09 -05:00
commit 4ce3cb5cdd
10 changed files with 75 additions and 7 deletions
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9
crt/arm/crtn.s Normal file
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@ -0,0 +1,9 @@
.section .init
tst lr,#1
moveq pc,lr
bx lr
.section .fini
tst lr,#1
moveq pc,lr
bx lr