Differential D54831 Diff 170318 sys/riscv/riscv/swtch.S

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sys/riscv/riscv/swtch.S

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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.		* SUCH DAMAGE.
*/		*/

#include "assym.inc"		#include "assym.inc"
#include "opt_sched.h"

#include <machine/param.h>		#include <machine/param.h>
#include <machine/asm.h>		#include <machine/asm.h>
#include <machine/riscvreg.h>		#include <machine/riscvreg.h>
#include <machine/pte.h>		#include <machine/pte.h>
.macro __fpe_state_save p		.macro __fpe_state_save p
/*		/*
* Enable FPE usage in supervisor mode,		* Enable FPE usage in supervisor mode,
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mv s1, a1		mv s1, a1
mv s2, a2		mv s2, a2
mv a0, a1		mv a0, a1
call _C_LABEL(pmap_activate_sw)		call _C_LABEL(pmap_activate_sw)
mv a1, s1		mv a1, s1

/* Release the old thread */		/* Release the old thread */
sd s2, TD_LOCK(s0)		sd s2, TD_LOCK(s0)
#if defined(SCHED_ULE) && defined(SMP)		#if defined(SMP)
/* Spin if TD_LOCK points to a blocked_lock */		/* Spin if TD_LOCK points to a blocked_lock */
la s2, _C_LABEL(blocked_lock)		la s2, _C_LABEL(blocked_lock)
1:		1:
ld t0, TD_LOCK(a1)		ld t0, TD_LOCK(a1)
beq t0, s2, 1b		beq t0, s2, 1b
#endif		#endif
/*		/*
* Restore the saved context.		* Restore the saved context.
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