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This matches a similar change made to glibc.
No functional changes here.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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from i386 and x86_64.
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should instead have been testing for '#ifdef __PIC__'. This resulted in
NON-PIC code getting mixed into the shared library. Oops!!!
-Erik
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-Erik
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I had a look at it and you won't believe it was always broken.
I'll try and explain it, let me know if it doesn't make sense.
* ash calls setjmp, which messes with the stack to look like it has
two args instead of one and then jmps (actually falls) into
sigsetjmp.
BUG
* sigsetjmp then saves the registers and "jumps" to __sigset_save, a C
function.
BUG1 - because the caller pops its args off the stack, a program that
changes it's number of args is broken because the caller will
not
pop the correct number of args.
I think that jumping from the sigsetjmp asm to the 'C' code is unsafe
but I can't think of an example. Anyway, I have attached what I think
is
a working fix.
The reason this worked without -fomit-frame-pointer is that the
_sigset_save 'C' code would restore the stack pointer from %ebp (the
frame
pointer) and because none of the asm had moded it, when we returned
from
__sigset_save the stack was back to it's correct position for 1
argument
despite our best attempts to stuff it up ;-)
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declared type function.
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headers (the way it has been done in GNU libc).
-Erik
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-Erik
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-Erik
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