Messages in this thread | | | Date | Wed, 5 Aug 2015 23:50:02 -0700 | From | Alexei Starovoitov <> | Subject | Re: [llvm-dev] [LLVMdev] Cc llvmdev: Re: llvm bpf debug info. Re: [RFC PATCH v4 3/3] bpf: Introduce function for outputing data to perf event |
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On Thu, Aug 06, 2015 at 12:31:26PM +0800, Wangnan (F) wrote: > > > What about hacking ELF binary in memory? > > 1. load the object into memory; > 2. twist the machine code to EM_X86_64; > 3. load it using elf_begin; > 4. return the twested elf memory image using libdwfl's find_elf callback. > > Then libdw will recognise BPF's object file as a X86_64 object file. If > required, > relocation sections can also be twisted in this way. Should not very hard > since > we can only consider one relocation type. > > Then let's start thinking how to introduce EM_BPF. We can rely on the > hacking > until EM_BPF symbol reaches elfutils in perf. > > What do you think?
sounds crazy, but may work. let's try it :)
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