On 2013-12-20 10:13, Johannes Pfau wrote:
Likely yes, that's why I said 'longterm' solution. You need to edit the
default linker script. Then there are 2 options: We can force certain
object files to be at the start or the end of the section. So we could
introduce dso_start.o and dso_end.o files containing the start/end
sections and those would always be placed as the first/last objects in
a section. (This is how the C++/C runtime calls the constructors in the
.ctors section: crtbegin.o contains a __CTOR_LIST__ symbol)
It's also possible to directly instruct the linker to insert a symbol
at the start of the section and at the end of the section. This way you
don't need special object files but the symbols will appear always,
even for C/C++ programs.
In theory it's always possible to use your own linker script without
updating the compiler, but that's not a practical solution. Implicit
linker-script which only extend the default script can be used for
custom sections, but AFAIK this doesn't work for standard sections.
Ok, I see.
--
/Jacob Carlborg
