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