<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Oct 16, 2009, at 4:43 AM, Daniel Waterworth wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Never mind, I used ExecutionEngine's InstallLazyFunctionCreator and DisableSymbolSearching to cause malloc and free calls to be handled by my logging functions. Sorry for the unnecessary list mail. <br></blockquote><div><br></div>No problem, this is a better way to go. The MallocInst and FreeInst instructions are about to be removed from LLVM IR. Malloc and free will be represented normal 'call' instructions.</div><div><br></div><div><blockquote type="cite">Is it possible to find out the size and beginning pointer of the current stack frame, from a function operating outside of the virtual machine, but called by a function within it?<br></blockquote><div><br></div><div>I don't think so. Typically, applications that need this sort of thing get the address of the function and then do a fuzzy disassembly of the prolog.</div><div><br></div><div>-Chris</div><br><blockquote type="cite"> <br>Thanks,<br><br>Daniel<br><br><div class="gmail_quote">2009/10/16 Daniel Waterworth <span dir="ltr"><<a href="mailto:da.waterworth@googlemail.com">da.waterworth@googlemail.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hello,<br><br>I'm writing a virtual machine that functions as a sandbox based on llvm. In order to prevent programs from accessing memory that has not been allocated to them, I want to replace calls to malloc and free with calls to a logged functions that will record the memory that is being allocated to the program. Is it possible to cast/convert a MallocInst or FreeInst to a CallInst?<br> <br>Thanks,<br><font color="#888888"><br>Daniel<br> </font></blockquote></div><br> _______________________________________________<br>LLVM Developers mailing list<br>LLVMdev@cs.uiuc.edu <a href="http://llvm.cs.uiuc.edu">http://llvm.cs.uiuc.edu</a><br><a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev">http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev</a><br></blockquote></div><br></body></html>