On Mon, Feb 05, 2007 at 01:10:48AM +0000, Ralf Baechle wrote: > Not saving the s-registers into the signal frame would be a neat > optimization. It wouldn't only make things a little faster it would > also free space in the signal frame which is needed for CPU > architecture extensions that have more state to save. I had to burn > almost the entire available space for the DSP extensions, so I wonder > if we could get GDB to work? The alternative is probably a new version > of the sigrestore. I'm sure that, if we tried, we could get GDB to work. Every time this comes up I just worry about other things that we don't know about which use the saved information. These structures are just in too many places to change comfortably. If you're worried about DSP extensions, you might want to take a look at the work Nico and I did for ARM in the past year or so; it tags extra register sets in the ucontext. It was a pain to get together though. -- Daniel Jacobowitz CodeSourcery
