-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, [please cc me, I'm not subscribed to the list] I am writing a system call stub. A system call here is basically a function call, with the exception that nearly all registers are used to pass arguments. Specifically I'm on ia32e/amd64, except for rfl, rip and rsp all registers are used to pass arguments to and from the kernel. Of course I can write a asm routine that follows the normal (elf) calling conventions and that pushes the arguments into the right registers and saves the necessary registers, but that stops gcc from optimizing this code. I wonder if I can specify a function prototype where the arguments are passed in arbitrary registers (and gcc cares about the register saving etc; that only does syscall in the asm implementation), or what the otherwise recommended way to go here is? thanks, - -- - -ness- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGYCsnvD/ijq9JWhsRAmm5AJ4rY5A5BANOICH+jcOgQ5evwbbucgCeL/dg u8ozkyNGnaXNWjDx/QSfAyY= =HmpP -----END PGP SIGNATURE-----
