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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/ia64/xen/hypercall.S
10817 views
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/*

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 * Support routines for Xen hypercalls

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 *

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 * Copyright (C) 2005 Dan Magenheimer <[email protected]>

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 * Copyright (C) 2008 Yaozu (Eddie) Dong <[email protected]>

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 */

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#include <asm/asmmacro.h>

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#include <asm/intrinsics.h>

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#include <asm/xen/privop.h>

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#ifdef __INTEL_COMPILER

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/*

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 * Hypercalls without parameter.

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 */

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#define __HCALL0(name,hcall)		\

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	GLOBAL_ENTRY(name);		\

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	break	hcall;			\

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	br.ret.sptk.many rp;		\

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	END(name)

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/*

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 * Hypercalls with 1 parameter.

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 */

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#define __HCALL1(name,hcall)		\

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	GLOBAL_ENTRY(name);		\

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	mov r8=r32;			\

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	break	hcall;			\

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	br.ret.sptk.many rp;		\

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	END(name)

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/*

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 * Hypercalls with 2 parameters.

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 */

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#define __HCALL2(name,hcall)		\

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	GLOBAL_ENTRY(name);		\

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	mov r8=r32;			\

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	mov r9=r33;			\

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	break	hcall;			\

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	br.ret.sptk.many rp;		\

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	END(name)

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__HCALL0(xen_get_psr, HYPERPRIVOP_GET_PSR)

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__HCALL0(xen_get_ivr, HYPERPRIVOP_GET_IVR)

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__HCALL0(xen_get_tpr, HYPERPRIVOP_GET_TPR)

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__HCALL0(xen_hyper_ssm_i, HYPERPRIVOP_SSM_I)

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__HCALL1(xen_set_tpr, HYPERPRIVOP_SET_TPR)

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__HCALL1(xen_eoi, HYPERPRIVOP_EOI)

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__HCALL1(xen_thash, HYPERPRIVOP_THASH)

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__HCALL1(xen_set_itm, HYPERPRIVOP_SET_ITM)

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__HCALL1(xen_get_rr, HYPERPRIVOP_GET_RR)

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__HCALL1(xen_fc, HYPERPRIVOP_FC)

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__HCALL1(xen_get_cpuid, HYPERPRIVOP_GET_CPUID)

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__HCALL1(xen_get_pmd, HYPERPRIVOP_GET_PMD)

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__HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)

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__HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)

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__HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)

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GLOBAL_ENTRY(xen_set_rr0_to_rr4)

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	mov r8=r32

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	mov r9=r33

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	mov r10=r34

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	mov r11=r35

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	mov r14=r36

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	XEN_HYPER_SET_RR0_TO_RR4

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	br.ret.sptk.many rp

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	;;

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END(xen_set_rr0_to_rr4)

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#endif

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GLOBAL_ENTRY(xen_send_ipi)

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	mov r14=r32

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	mov r15=r33

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	mov r2=0x400

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	break 0x1000

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	;;

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	br.ret.sptk.many rp

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	;;

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END(xen_send_ipi)

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GLOBAL_ENTRY(__hypercall)

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	mov r2=r37

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	break 0x1000

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	br.ret.sptk.many b0

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	;;

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END(__hypercall)

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