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/*-
* Copyright (c) 2013 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Benno Rice under sponsorship from
* the FreeBSD Foundation.
* 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, 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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>
.text
.globl amd64_tramp
/*
* void amd64_tramp(uint64_t stack, void *copy_finish, uint64_t kernend,
* uint64_t modulep, uint64_t pagetable, uint64_t entry)
*/
amd64_tramp:
cli /* Make sure we don't get interrupted. */
movq %rdi,%rsp /* Switch to our temporary stack. */
movq %rdx,%r12 /* Stash the kernel values for later. */
movq %rcx,%r13
movq %r8,%r14
movq %r9,%r15
callq *%rsi /* Call copy_finish so we're all ready to go. */
pushq %r12 /* Push kernend. */
salq $32,%r13 /* Shift modulep and push it. */
pushq %r13
pushq %r15 /* Push the entry address. */
movq %r14,%cr3 /* Switch page tables. */
ret /* "Return" to kernel entry. */
ALIGN_TEXT
amd64_tramp_end:
.data
.globl amd64_tramp_size
amd64_tramp_size:
.long amd64_tramp_end-amd64_tramp
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