Vaibhav Shrimali <vaibhav.shrimali@xxxxxxxxx> writes: > I have been executing the code all this time. But apparently it was > generating segmentation fault error. > I configured the compiler with --disable-libssp option to disable the > stack protector. Also I modified the hard frame pointer offset in the > compute_frame_layout() method. > But still it is showing segmentation fault. Look at the generated code and see what is wrong. It's very hard for us to answer a general question like "tell me what is wrong with this code." We have a somewhat better chance of answering a specific question like "this code produces X and I want Y." Ian > On Thu, Apr 15, 2010 at 7:41 PM, Ian Lance Taylor <iant@xxxxxxxxxx> wrote: >> Vaibhav Shrimali <vaibhav.shrimali@xxxxxxxxx> writes: >> >>> Thanks for all your help so far. I now think I am closer to my goal. >>> In order to execute : >>> XOR [EBP+4], [EBP] >>> after executing : >>> PUSH EBP >>> >>> in the prologue, I need to use : emit_insn (gen_xorsi3 (DESTREG, SRC1, SRC2)); >>> So I checked and I can generate a register such that: >>> rtx ebp_reg = gen_rtx_REG(Pmode, BP_REG); >>> this would be a hard register. >>> rtx ebp_plus = gen_rtx_PLUS(Pmode, ebp_reg, 4); >>> >>> so now executing :- >>> >>> emit_insn (gen_xorsi3 (ebp_plus, ebp_plus, ebp_reg)); >>> >>> I dont know if ebp_plus would be converted to [XOR+4] or not, although >>> it is derived from the hard register ebp_reg. >>> >>> If I am wrong in this approach, please correct me. >> >> At some point you have to try it and see what happens. The dump files >> will show you the generated RTL. >> >> Ian >> > > > > -- > Vaibhav Shrimali > BTech(ICT), DA-IICT > Gandhinagar
