I know valgrind, it is an emulator ,but we are restricted not to use an emulator. :-(
2007/1/24, Nicholas Nethercote <[EMAIL PROTECTED]>:
On Wed, 24 Jan 2007, [GB2312] ÎâêØ wrote: > I am working on gcc 4.0.0. I want to use gcc to intercept each call to > read, and taint the data readed in. For example: > transform > read(fd, buf, size) > to > read(fd, buf, size) > if(is_socket(fd)) > taint(buf, size) > So, what is the best suitable level to do this modification in gcc? My > own thought is in finish_function, before calling c_genericize,as I > discovered that in c front-end, there's no GENERIC tree... In > c_genericize, it directly calls gimplify_function_tree. Are you sure you want to do this in GCC? You might find it easier to use a dynamic binary instrumentation framework such as Valgrind or Pin to do this kind of thing. Nick
