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* sh64: Use the shared FPU state restorer.Paul Mundt2010-01-19
| | | | | | | This kills off the sh64-specific state restorer and switches over to the generic one. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh64: Fix up the build for the thread_xstate changes.Paul Mundt2010-01-19
| | | | | | | This updates the sh64 processor info with the sh32 changes in order to tie in to the generic task_xstate management code. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix up FPU build for SH5Matt Fleming2009-12-14
| | | | | | | | After the recent FPU optimisation commit the signature of save_fpu() changed. "regs" wasn't used in the implementation of save_fpu() anyway. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Fix occasional FPU register corruption under preempt.Paul Mundt2008-03-26
| | | | | | | | | | | Presently with preempt enabled there's the possibility to be preempted after the TIF_USEDFPU test and the register save, leading to bogus state post-__switch_to(). Use an explicit preempt_disable()/enable() pair around unlazy_fpu()/clear_fpu() to avoid this. Follows the x86 change. Reported-by: Takuo Koguchi <takuo.koguchi.sw@hitachi.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: comment tidying for sh64->sh migration.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Bring the SH-5 FPU in line with the SH-4 FPU API.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Move over and enable FPU support for SH-5.Paul Mundt2008-01-27
Signed-off-by: Paul Mundt <lethal@linux-sh.org>