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/*-
* Copyright (C) 2010 Andreas Tobler
* 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, 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 TOOLS GMBH 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/asm.h>
/* Hypervisor entry call. */
#define hc .long 0x44000022
/*
* Simple HV calls take the same arguments, with the same ABI, as this
* C function
*/
ASENTRY(phyp_hcall)
mflr %r0
std %r0,16(%r1)
ld %r11,112(%r1) /* Last couple args into volatile regs*/
ld %r12,120(%r1)
hc /* invoke the hypervisor */
ld %r0,16(%r1)
mtlr %r0
blr /* return r3 = status */
/*
* PFT HV calls take a special ABI (see PAPR 14.5.4.1)
*
* r3-r7 arguments passed unchanged, r8-r10 are addresses of return values
* HV takes the same r3-r7, but returns values in r3, r4-r6
*/
ASENTRY(phyp_pft_hcall)
mflr %r0
std %r0,16(%r1)
stdu %r1,-80(%r1)
std %r8,48(%r1) /* save arguments */
std %r9,56(%r1)
std %r10,64(%r1)
hc /* invoke the hypervisor */
ld %r11,48(%r1) /* store results */
std %r4,0(%r11)
ld %r11,56(%r1)
std %r5,0(%r11)
ld %r11,64(%r1)
std %r6,0(%r11)
ld %r1,0(%r1) /* exit */
ld %r0,16(%r1)
mtlr %r0
blr /* return r3 = status */
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