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/*
* This file contains the code to perform calls to the
* iSeries LPAR hypervisor
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <asm/ppc_asm.h>
#include <asm/processor.h>
#include <asm/ptrace.h> /* XXX for STACK_FRAME_OVERHEAD */
.text
/*
* Hypervisor call
*
* Invoke the iSeries hypervisor via the System Call instruction
* Parameters are passed to this routine in registers r3 - r10
*
* r3 contains the HV function to be called
* r4-r10 contain the operands to the hypervisor function
*
*/
_GLOBAL(HvCall)
_GLOBAL(HvCall0)
_GLOBAL(HvCall1)
_GLOBAL(HvCall2)
_GLOBAL(HvCall3)
_GLOBAL(HvCall4)
_GLOBAL(HvCall5)
_GLOBAL(HvCall6)
_GLOBAL(HvCall7)
mfcr r0
std r0,-8(r1)
stdu r1,-(STACK_FRAME_OVERHEAD+16)(r1)
/* r0 = 0xffffffffffffffff indicates a hypervisor call */
li r0,-1
/* Invoke the hypervisor */
sc
ld r1,0(r1)
ld r0,-8(r1)
mtcrf 0xff,r0
/* return to caller, return value in r3 */
blr
_GLOBAL(HvCall0Ret16)
_GLOBAL(HvCall1Ret16)
_GLOBAL(HvCall2Ret16)
_GLOBAL(HvCall3Ret16)
_GLOBAL(HvCall4Ret16)
_GLOBAL(HvCall5Ret16)
_GLOBAL(HvCall6Ret16)
_GLOBAL(HvCall7Ret16)
mfcr r0
std r0,-8(r1)
std r31,-16(r1)
stdu r1,-(STACK_FRAME_OVERHEAD+32)(r1)
mr r31,r4
li r0,-1
mr r4,r5
mr r5,r6
mr r6,r7
mr r7,r8
mr r8,r9
mr r9,r10
sc
std r3,0(r31)
std r4,8(r31)
mr r3,r5
ld r1,0(r1)
ld r0,-8(r1)
mtcrf 0xff,r0
ld r31,-16(r1)
blr
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