arch_fpu_context
struct arch_fpu_context fpuContext;
void arm_save_fpu(struct arch_fpu_context* context);
void arm_restore_fpu(struct arch_fpu_context* context);
arm_save_fpu((arch_fpu_context*)&signalFrameData->context.uc_mcontext.d[0]);
arm_restore_fpu((arch_fpu_context*)&signalFrameData->context.uc_mcontext.d[0]);