On Mon, 24 Jun 2002, Ralf Baechle wrote: > It's in the kernel for no better reason than Risc/OS and IRIX having this > syscall. Also the glibc syscall implementation was historically broken > wrt. syscall restarting and a few other subtilities. Well, userland implementations for other archs seem quite straightforward. So should be ours -- we only have to shuffle arguments appropriately. Restarting is easy -- we just have to make sure to reload v0 just before "syscall" reliably (we can use a static register or an automatic variable to preserve it). What are the few other subtleties? Also I can't see an implementation of syscall() for MIPS/Linux anywhere in glibc. What implementation do you refer to? The Mach one? The win is we don't have to mess with user accesses specially -- the final syscall will handle them. -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
