Date: Sun, 20 Mar 2011 11:08:10 +0800 From: Xingxing Pan <panxingxing@mprc.pku.edu.cn> To: Chagin Dmitry <dchagin@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: Re: GSoC'11: DWARF2 call frame information Message-ID: <AANLkTimp9qoOFr0VfK1F_r1nE3n_5d7W2-q_vSK_UzgW@mail.gmail.com> In-Reply-To: <20110319174115.GA33282@dchagin.static.corbina.ru> References: <AANLkTinz6B7fsG7Cjc3ZTZ0OAmsOG8x1P25EfOE7Bt4J@mail.gmail.com> <20110319174115.GA33282@dchagin.static.corbina.ru>
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2011/3/20 Chagin Dmitry <dchagin@freebsd.org>: > On Sun, Mar 20, 2011 at 12:36:39AM +0800, Xingxing Pan wrote: >> Hi, everyone. >> >> I'm a student interested in the project "DWARF2 call frame >> information" for Summer of Code 2011. >> I'd like to know which compiler I will work on to add DWARF2 support. >> This project is not tagged by "suggested". Will it be ok to choose it >> as the target? >> > > hi Xingxing, > > You should carefully reread the proposed idea. Especially in the > "A debug kernel is not able to show stack traces with cross > exceptions anymore. This is because we do not emit any dwarf2 > call frame information for any assembler code, since gdb switched > to the dwarf2 format" part. > > And, of course, this work is very important for the community. So, IMO, > it will be ok as the target :) > Thank you. > > -- > Have fun! > chd > Hi chd, Thank you for your reply. I thought the dwarf2 call frame information was generated by the toolchain. That's why I care about the states of the compiler. I'm not quite understand the proposed idea. Could you show me more details of the project? I really appreciate your support. Thank you. Xingxing Pan
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