Applied. Christian Franke wrote: > Vladimir 'φ-coder/phcoder' Serbinenko wrote: >> Christian Franke wrote: >> >>> The *_frame_info symbols are set undefined to force linkage of the >>> libgcc_s shared library or dll. >>> >>> This can be prevented by TARGET_LDFLAGS=-static-libgcc. To build from >>> grub-1.98 tarball on Cygwin, run configure with this argument. >>> >>> May also be necessary on other build platforms when -shared-libgcc is >>> the default. It may be possible simply set -static-libgcc >>> unconditionally. >>> >>> >> We already supply -lgcc --static-libgcc. Do you know why it still had >> issues? >> > > The above is only set when linking the kernel image. > > According to 'gcc -dumpspecs' of Cygwin gcc 4.3.4-3, options '-u > ___[de]register_frame_info' are always passed to the linker if > -static-libgcc is not specified. This is Cygwin and MinGW specific: In > the exe startup code these symbols are loaded only if present, so the > DLL must be forced to load first. > > As a consequence, the symbols are also set undefined when the GRUB > pre-*.o files are generated with 'ld -r'. > > The attached patch works for me with the bzr revision preceding the > NEED_REGISTER_FRAME_INFO fix. > > >> And I also doubt usefullness of pulling these functions since reference >> to them is purely dummy: no relocation uses it so it will only increase >> code size. Another concern is the behviour of these functions in grub >> environment if they ever get called. >> >> > > AFAICS from the gcc source, the functions are used in EH stack > unwinding code in libgcc. The compiler itself does not generate calls > to these functions. > > > ------------------------------------------------------------------------ > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > http://lists.gnu.org/mailman/listinfo/grub-devel
-- Regards Vladimir 'φ-coder/phcoder' Serbinenko
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