On Fri, Nov 17, 2000 at 07:28:50PM -0600, firstname.lastname@example.org wrote:
> The following lines appear in the linuxthreads/sysdeps/mips/pt-machine.h
> file in version
> LinuxThreads 2.1.2:
> TODO: This version makes use of MIPS ISA 2 features. It won't
> work on ISA 1. These machines will have to take the overhead of
> a sysmips(MIPS_ATOMIC_SET, ...) syscall which isn't implemented
> yet correctly. There is however a better solution for R3000
> uniprocessor machines possible.
> My questions are:
> 1. Is the sysmips syscall implemented correctly yet?
> 2. What is the better solution for R3000 uniprocessor machines?
You can base a spinlock implementation on the fact that the register k0
will be left at a value != zero after any exception, also including context
Problem: this solution breaks silently on multiproessor systems.
> 3. Does anyone have a patch for LinuxThreads that supports MIPS ISA 1?
glibc 2.2's pthread will do that out of the box.