Hi, I'm working on a Valgrind tool targeting 32-bit guests that up to this point we have been running on 32-bit hosts. I would like to also be able to compile to target 32-bit guest on 64-bit host. So far, the largest difference that I have found is described in the comments of "doHelperCall" in host_amd64_isel.c:
"This function only deals with a tiny set of possibilities, which cover all helpers in practice. The restrictions are that only arguments in registers are supported, hence only 6x64 integer bits in total can be passed. In fact the only supported arg type is I64." With this constraint in place, I was wondering if there were any particular best-practices for cross platform tool development. For instance, we could promote all parameters for all tool callbacks to 64-bit across all platforms to keep the code clean and uniform, or we could maintain parallel platform-specific callback compilation units that must be manually kept consistent across feature changes and bug fixes, or we could throw a bunch of #ifdefs in the source to change the function signatures and IExpr marshaling depending on platform. Any thoughts are appreciated! - Paolo ------------------------------------------------------------------------------ Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
