360 	thread_t td;  in npxdna()  local
363 	td = md->mi.gd_curthread;  in npxdna()
372 		if (md->gd_npxthread == td) {  in npxdna()
376 		       md->gd_npxthread, td);  in npxdna()
386 	if ((td->td_flags & TDF_USINGFP) == 0) {  in npxdna()
387 		td->td_flags |= TDF_USINGFP;  in npxdna()
404 	md->gd_npxthread = td;  in npxdna()
418 	if ((td->td_savefpu->sv_xmm.sv_env.en_mxcsr & ~npx_mxcsr_mask) &&  in npxdna()
422 			    td->td_comm, td->td_savefpu->sv_xmm.sv_env.en_mxcsr,  in npxdna()
424 		td->td_savefpu->sv_xmm.sv_env.en_mxcsr &= npx_mxcsr_mask;  in npxdna()
425 		lwpsignal(td->td_proc, td->td_lwp, SIGFPE);  in npxdna()
427 	fpurstor(td->td_savefpu, npx_xcr0_mask);  in npxdna()
514 	thread_t td = curthread;  in npxpush()  local
516 	if (td->td_flags & TDF_USINGFP) {  in npxpush()
517 		if (mdcpu->gd_npxthread == td) {  in npxpush()
524 			npxsave(td->td_savefpu);  in npxpush()
528 		KKASSERT(sizeof(*td->td_savefpu) <= sizeof(mctx->mc_fpregs));  in npxpush()
529 		bcopy(td->td_savefpu, mctx->mc_fpregs, sizeof(*td->td_savefpu));  in npxpush()
530 		td->td_flags &= ~TDF_USINGFP;  in npxpush()
554 	thread_t td = curthread;  in npxpop()  local
564 		if (td->td_flags & TDF_USINGFP) {  in npxpop()
565 			if (td == mdcpu->gd_npxthread)  in npxpop()
566 				npxsave(td->td_savefpu);  in npxpop()
567 			td->td_flags &= ~TDF_USINGFP;  in npxpop()
585 		if (td == mdcpu->gd_npxthread)  in npxpop()
586 			npxsave(td->td_savefpu);  in npxpop()
587 		KKASSERT(sizeof(*td->td_savefpu) <= sizeof(mctx->mc_fpregs));  in npxpop()
588 		bcopy(mctx->mc_fpregs, td->td_savefpu, sizeof(*td->td_savefpu));  in npxpop()
589 		if ((td->td_savefpu->sv_xmm.sv_env.en_mxcsr & ~npx_mxcsr_mask) &&  in npxpop()
594 				    td->td_proc->p_pid,  in npxpop()
595 				    td->td_proc->p_comm,  in npxpop()
596 				    td->td_savefpu->sv_xmm.sv_env.en_mxcsr);  in npxpop()
598 		td->td_flags |= TDF_USINGFP;  in npxpop()
612 	thread_t td = curthread;  in kernel_fpu_begin()  local
614 	KASSERT((td->td_flags & TDF_KERNELFP) == 0,  in kernel_fpu_begin()
616 	atomic_set_int(&td->td_flags, TDF_KERNELFP);  in kernel_fpu_begin()
617 	if (td->td_kfpuctx == NULL) {  in kernel_fpu_begin()
618 		td->td_kfpuctx = kmalloc(sizeof(*td->td_kfpuctx), M_FPUCTX,  in kernel_fpu_begin()
621 	npxpush(td->td_kfpuctx);  in kernel_fpu_begin()
632 	thread_t td = curthread;  in kernel_fpu_end()  local
634 	KASSERT((td->td_flags & TDF_KERNELFP) != 0,  in kernel_fpu_end()
636 	npxpop(td->td_kfpuctx);  in kernel_fpu_end()
637 	atomic_clear_int(&td->td_flags, TDF_KERNELFP);  in kernel_fpu_end()