> Just to be clear because you didn't state that this > code *is* working on MacOSX on PowerPC, is it? > Because it works for me. Just thought I'd mention > it. If you want it I'll post but it's pretty straight forward > powerpc assembly.
Thanks, but I already have working context-switch code for OS X on PowerPC. The actual context-switch code I'm using for OS X on x86 is more careful than the assembly in the test program I posted. The test program was intended only to be a minimal illustration of the problem. The fact that it works on PowerPC is one of the reasons I was so surprised it doesn't work on x86. But maybe they felt the small number of x86 registers justified using the high-order bits of the stack pointer as some kind of per-thread identifier. Everyone else seems to have made that mistake too, though everyone else has corrected it. Russ
