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75 lines
2.4 KiB
ArmAsm
75 lines
2.4 KiB
ArmAsm
/*-
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* Copyright (C) 2010 Andreas Tobler
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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/* Hypervisor entry call. */
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#define hc .long 0x44000022
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/*
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* Simple HV calls take the same arguments, with the same ABI, as this
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* C function
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*/
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ASENTRY(phyp_hcall)
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mflr %r0
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std %r0,16(%r1)
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#if defined(_CALL_ELF) && _CALL_ELF == 2
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ld %r11,96(%r1) /* Last couple args into volatile regs*/
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ld %r12,104(%r1)
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#else
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ld %r11,112(%r1) /* Last couple args into volatile regs*/
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ld %r12,120(%r1)
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#endif
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hc /* invoke the hypervisor */
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ld %r0,16(%r1)
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mtlr %r0
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blr /* return r3 = status */
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ASEND(phyp_hcall)
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/*
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* PFT HV calls take a special ABI (see PAPR 14.5.4.1)
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*
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* r3-r7 arguments passed unchanged, r8-r10 are addresses of return values
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* HV takes the same r3-r7, but returns values in r3, r4-r6
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*/
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ASENTRY(phyp_pft_hcall)
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mflr %r0
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std %r0,16(%r1)
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stdu %r1,-80(%r1)
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std %r8,48(%r1) /* save arguments */
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std %r9,56(%r1)
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std %r10,64(%r1)
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hc /* invoke the hypervisor */
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ld %r11,48(%r1) /* store results */
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std %r4,0(%r11)
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ld %r11,56(%r1)
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std %r5,0(%r11)
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ld %r11,64(%r1)
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std %r6,0(%r11)
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ld %r1,0(%r1) /* exit */
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ld %r0,16(%r1)
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mtlr %r0
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blr /* return r3 = status */
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ASEND(phyp_pft_hcall)
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