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Sébastien Lorquet squalyl at gmail.comHi, If I understand correctly, this is the same type of idea of the linux kernel's __init magic, except that no code cleanup is done? Regards Sebastien On Fri, Jun 25, 2010 at 3:28 AM, Harald Welte <laforge at gnumonks.org> wrote: > Hi! > > As indicated in other mails, we now have support for gcc-style constructors > in OsmocomBB. The way to use them is relatively easy: Simply put > "__attribute__((constructor))" at the function that you want to be > called during initialization. > > The way how this works is like this: > * gcc and the linker create a table of function pointers to all the > functions with that attribute > * the code in compal_ramload_start.S takes care of calling > lib/ctors.s:do_global_ctors() which iterates over the list > and calls each constructor > > This concept is now used for things like prim_fbsb_init() in layer1, > but I have also started to use it for board_init(). This means that > board_init() no longer needs to be called from the main() function > of each app. > > We can probably put more stuff into constructors, but we should also > be careful as with gcc-4.0.2 we cannot yet indicate priorities and thus > there is no explicit way to control the ordering in case of dependencies. > > Regards, > Harald > -- > - Harald Welte <laforge at gnumonks.org> > http://laforge.gnumonks.org/ > > ============================================================================ > "Privacy in residential applications is a desirable marketing option." > (ETSI EN 300 175-7 Ch. A6) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/baseband-devel/attachments/20100628/65dca256/attachment.htm>