Date: Fri, 12 Mar 2004 16:52:42 -0800 (PST) From: Juli Mallett <jmallett@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 48841 for review Message-ID: <200403130052.i2D0qg5m046371@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=48841 Change 48841 by jmallett@jmallett_oingo on 2004/03/12 16:52:22 Write cpu_switch in C. Affected files ... .. //depot/projects/mips/sys/mips/mips/swtch.S#3 edit .. //depot/projects/mips/sys/mips/mips/vm_machdep.c#11 edit Differences ... ==== //depot/projects/mips/sys/mips/mips/swtch.S#3 (text+ko) ==== @@ -23,7 +23,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $P4: //depot/projects/mips/sys/mips/mips/swtch.S#2 $ + * $P4: //depot/projects/mips/sys/mips/mips/swtch.S#3 $ */ #include <machine/asm.h> @@ -85,28 +85,6 @@ END(cpu_throw) /* - * a0: struct thread *old - * a1: struct thread *new - */ -ENTRY(cpu_switch) - dsubu sp, 8 - sd ra, 0(sp) - jal savectx - nop - bnez v0, restore - nop - jal pmap_deactivate - nop - jal cpu_throw - nop - /* NOTREACHED */ -restore: - ld ra, 0(sp) - j ra - daddu sp, 8 -END(cpu_switch) - -/* * s0: Routine to call. * s1: a0 for said routine. * s2: a1 for said routine. ==== //depot/projects/mips/sys/mips/mips/vm_machdep.c#11 (text+ko) ==== @@ -103,6 +103,16 @@ } void +cpu_switch(struct thread *old, struct thread *new) +{ + if (!savectx(old->td_pcb)) { + pmap_deactivate(old); + cpu_throw(old, new); + panic("%s: should not be reached", __func__); + } +} + +void cpu_thread_exit(struct thread *td) { panic("%s", __func__);
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