Emit code for running on bare hardware? No OS?

[awbeale]

Is there an option to use the Intel compilers for generating code which will run directly on the Itanium hardware? No Windows. No Linux. No OS of any kind. Just C++ code which has been linked and located and is ready for loading by EFI or a custom EFI extension. Is there a locater for IA64?

[John_O_Intel]

Hi,

Possibly, the Intel C Compiler for EFI Byte Code might be of interest. Info available at http://www.intel.com/software/products/compilers/efibc/whatsnew.htm

Regards,

John O'Neill

[awbeale]

Thanks John, but would this not be interpreted? EFI code will not perform at the same level as native C++, or am I missing something fundamental here?

Andy

[John_O_Intel]

Hi Andy,

Yes, I believe this would be interpreted code.

I don't know how an application would run w/o an OS,as the standard library calls are implemented by the OS. And I don't know how the compiler could generate code that would run w/o the OS. If you could provide details on what you want to do, I might be able to find additional info thatmight help.

regards,

john

[awbeale]

I wish to implementa project which does not rely on Windows or Linux or any OS. In essence, it is a form of an embedded system. I will only be callng functions within the C++ library which do not rely on an underlying OS.

Things like MIN, MAX, etc. should not be reliant on an underlying OS. Anything which is in the standard ANSI C libraries I do not believe should be dependent upon an OS underneath it. Now I understand that the Microsoft supplied library is intended for use with Windows and will probably leverage the Windows OS, but I think that is irrelevant for what I wish to do.

I wish to compile my project using standalone versions of runtime libraries. Once compiled, I need to have EFI transfer control to my project instead of some other OS. Looking at it this way, I am building an OS, just not in the traditional sense. In my case the OS is a dedicated program designed to run directly on the Itanium hardware. So how do I build a standard excuteable which can be loaded by EFI into memory and get control transfered to my outer block?

[John_O_Intel]

Hi Andy,

Thanks for the details. I don't know how you would do this with our compilers, but you can minimize OS system calls by building the app w/ -static option on Linux. Using the strace utility,a hello world app makes ~77 system call when compiled dynamically, but only 12 when compiled statically. If your able towrite a mini-OS, it will need to be able to implement someOS type calls, but I have no idea where to start. Good luck !

John