1/*-
2 * Copyright (C) 2010 Andreas Tobler
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
22 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
23 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27#include <machine/asm.h>
28
29/* Hypervisor entry call. */
30#define  hc  .long 0x44000022
31
32/*
33 * Simple HV calls take the same arguments, with the same ABI, as this
34 * C function
35 */
36ASENTRY(phyp_hcall)
37	mflr	%r0
38	std	%r0,16(%r1)
39	ld	%r11,112(%r1)		/* Last couple args into volatile regs*/
40	ld	%r12,120(%r1)
41	hc				/* invoke the hypervisor */
42	ld	%r0,16(%r1)
43	mtlr	%r0
44	blr				/* return r3 = status */
45
46/*
47 * PFT HV calls take a special ABI (see PAPR 14.5.4.1)
48 *
49 * r3-r7 arguments passed unchanged, r8-r10 are addresses of return values
50 * HV takes the same r3-r7, but returns values in r3, r4-r6
51 */
52ASENTRY(phyp_pft_hcall)
53	mflr	%r0
54	std	%r0,16(%r1)
55	stdu	%r1,-80(%r1)
56	std	%r8,48(%r1)		/* save arguments */
57	std	%r9,56(%r1)
58	std	%r10,64(%r1)
59	hc				/* invoke the hypervisor */
60	ld	%r11,48(%r1)		/* store results */
61	std	%r4,0(%r11)
62	ld	%r11,56(%r1)
63	std	%r5,0(%r11)
64	ld	%r11,64(%r1)
65	std	%r6,0(%r11)
66	ld	%r1,0(%r1)		/* exit */
67	ld	%r0,16(%r1)
68	mtlr	%r0
69	blr				/* return r3 = status */
70
71