tree 63532ff7cc68b18ca4902bd10e03fcbaaf01cade
parent 72ffff5b1792b0fa4d40a8e2f3276fff999820ec
author Michael Neuling <mikey@neuling.org> 1214366838 +1000
committer Paul Mackerras <paulus@samba.org> 1214875730 +1000

powerpc: Add VSX context save/restore, ptrace and signal support

This patch extends the floating point save and restore code to use the
VSX load/stores when VSX is available.  This will make FP context
save/restore marginally slower on FP only code, when VSX is available,
as it has to load/store 128bits rather than just 64bits.

Mixing FP, VMX and VSX code will get constant architected state.

The signals interface is extended to enable access to VSR 0-31
doubleword 1 after discussions with tool chain maintainers.  Backward
compatibility is maintained.

The ptrace interface is also extended to allow access to VSR 0-31 full
registers.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>