diff options
Diffstat (limited to 'sys/dev/hyperv/vmbus/i386/hv_vector.S')
-rw-r--r-- | sys/dev/hyperv/vmbus/i386/hv_vector.S | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sys/dev/hyperv/vmbus/i386/hv_vector.S b/sys/dev/hyperv/vmbus/i386/hv_vector.S new file mode 100644 index 0000000..55a2613 --- /dev/null +++ b/sys/dev/hyperv/vmbus/i386/hv_vector.S @@ -0,0 +1,49 @@ +/*- + * Copyright (c) 2016 Microsoft Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 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 SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <machine/asmacros.h> +#include <machine/specialreg.h> + +#include "assym.s" + +/* + * This is the Hyper-V vmbus channel direct callback interrupt. + * Only used when it is running on Hyper-V. + */ + .text + SUPERALIGN_TEXT +IDTVEC(hv_vmbus_callback) + PUSH_FRAME + SET_KERNEL_SREGS + cld + FAKE_MCOUNT(TF_EIP(%esp)) + pushl %esp + call hv_vector_handler + add $4, %esp + MEXITCOUNT + jmp doreti |