arch/ia64/kvm/optvfault.S

/*
 * arch/ia64/kvm/optvfault.S
 * optimize virtualization fault handler
 *
 * Copyright (C) 2006 Intel Co
 *	Xuefei Xu (Anthony Xu) <anthony.xu@intel.com>
 * Copyright (C) 2008 Intel Co
 *      Add the support for Tukwila processors.
 *	Xiantao Zhang <xiantao.zhang@intel.com>
 */

#include <asm/asmmacro.h>
#include <asm/processor.h>
#include <asm/kvm_host.h>

#include "vti.h"
#include "asm-offsets.h"

#define ACCE_MOV_FROM_AR
#define ACCE_MOV_FROM_RR
#define ACCE_MOV_TO_RR
#define ACCE_RSM
#define ACCE_SSM
#define ACCE_MOV_TO_PSR
#define ACCE_THASH

#define VMX_VPS_SYNC_READ			\
	add r16=VMM_VPD_BASE_OFFSET,r21;	\
	mov r17 = b0;				\
	mov r18 = r24;				\
	mov r19 = r25;				\
	mov r20 = r31;				\
	;;					\
{.mii;						\
	ld8 r16 = [r16];			\
	nop 0x0;				\
	mov r24 = ip;				\
	;;					\
};						\
{.mmb;						\
	add r24=0x20, r24;			\
	mov r25 =r16;				\
	br.sptk.many kvm_vps_sync_read;		\
};						\
	mov b0 = r17;				\
	mov r24 = r18;				\
	mov r25 = r19;				\
	mov r31 = r20

ENTRY(kvm_vps_entry)
	adds r29 = VMM_VCPU_VSA_BASE_OFFSET,r21
	;;
	ld8 r29 = [r29]
	;;
	add r29 = r29, r30
	;;
	mov b0 = r29
	br.sptk.many b0
END(kvm_vps_entry)

/*
 *	Inputs:
 *	r24 : return address
 *  	r25 : vpd
 *	r29 : scratch
 *
 */
GLOBAL_ENTRY(kvm_vps_sync_read)
	movl r30 = PAL_VPS_SYNC_READ
	;;
	br.sptk.many kvm_vps_entry
END(kvm_vps_sync_read)

/*
 *	Inputs:
 *	r24 : return address
 *  	r25 : vpd
 *	r29 : scratch
 *
 */
GLOBAL_ENTRY(kvm_vps_sync_write)
	movl r30 = PAL_VPS_SYNC_WRITE
	;;
	br.sptk.many kvm_vps_entry
END(kvm_vps_sync_write)

/*
 *	Inputs:
 *	r23 : pr
 *	r24 : guest b0
 *  	r25 : vpd
 *
 */
GLOBAL_ENTRY(kvm_vps_resume_normal)
	movl r30 = PAL_VPS_RESUME_NORMAL
	;;
	mov pr=r23,-2
	br.sptk.many kvm_vps_entry
END(kvm_vps_resume_normal)

/*
 *	Inputs:
 *	r23 : pr
 *	r24 : guest b0
 *  	r25 : vpd
 *	r17 : isr
 */
GLOBAL_ENTRY(kvm_vps_resume_handler)
	movl r30 = PAL_VPS_RESUME_HANDLER
	;;
	ld8 r26=[r25]
	shr r17=r17,IA64_ISR_IR_BIT
	;;
	dep r26=r17,r26,63,1   // bit 63 of r26 indicate whether enable CFLE
	mov pr=r23,-2
	br.sptk.many kvm_vps_entry
END(kvm_vps_resume_handler)

//mov r1=ar3
GLOBAL_ENTRY(kvm_asm_mov_from_ar)
#ifndef ACCE_MOV_FROM_AR
	br.many kvm_virtualization_fault_back
#endif
	add r18=VMM_VCPU_ITC_OFS_OFFSET, r21
	add r16=VMM_VCPU_LAST_ITC_OFFSET,r21
	extr.u r17=r25,6,7
	;;
	ld8 r18=[r18]
	mov r19=ar.itc
	mov r24=b0
	;;
	add r19=r19,r18
	addl r20=@gprel(asm_mov_to_reg),gp
	;;
	st8 [r16] = r19
	adds r30=kvm_resume_to_guest-asm_mov_to_reg,r20
	shladd r17=r17,4,r20
	;;
	mov b0=r17
	br.sptk.few b0
	;;
END(kvm_asm_mov_from_ar)

/*
 * Special SGI SN2 optimized version of mov_from_ar using the SN2 RTC
 * clock as it's source for emulating the ITC. This version will be
 * copied on top of the original version if the host is determined to
 * be an SN2.
 */
GLOBAL_ENTRY(kvm_asm_mov_from_ar_sn2)
	add r18=VMM_VCPU_ITC_OFS_OFFSET, r21
	movl r19 = (KVM_VMM_BASE+(1<<KVM_VMM_SHIFT))

	add r16=VMM_VCPU_LAST_ITC_OFFSET,r21
	extr.u r17=r25,6,7
	mov r24=b0
	;;
	ld8 r18=[r18]
	ld8 r19=[r19]
	addl r20=@gprel(asm_mov_to_reg),gp
	;;
	add r19=r19,r18
	shladd r17=r17,4,r20
	;;
	adds r30=kvm_resume_to_guest-asm_mov_to_reg,r20
	st8 [r16] = r19
	mov b0=r17
	br.sptk.few b0
	;;
END(kvm_asm_mov_from_ar_sn2)



// mov r1=rr[r3]
GLOBAL_ENTRY(kvm_asm_mov_from_rr)
#ifndef ACCE_MOV_FROM_RR
	br.many kvm_virtualization_fault_back
#endif
	extr.u r16=r25,20,7
	extr.u r17=r25,6,7
	addl r20=@gprel(asm_mov_from_reg),gp
	;;
	adds r30=kvm_asm_mov_from_rr_back_1-asm_mov_from_reg,r20
	shladd r16=r16,4,r20
	mov r24=b0
	;;
	add r27=VMM_VCPU_VRR0_OFFSET,r21
	mov b0=r16
	br.many b0
	;;
kvm_asm_mov_from_rr_back_1:
	adds r30=kvm_resume_to_guest-asm_mov_from_reg,r20
	adds r22=asm_mov_to_reg-asm_mov_from_reg,r20
	shr.u r26=r19,61
	;;
	shladd r17=r17,4,r22
	shladd r27=r26,3,r27
	;;
	ld8 r19=[r27]
	mov b0=r17
	br.many b0
END(kvm_asm_mov_from_rr)


// mov rr[r3]=r2
GLOBAL_ENTRY(kvm_asm_mov_to_rr)
#ifndef ACCE_MOV_TO_RR
	br.many kvm_virtualization_fault_back
#endif
	extr.u r16=r25,20,7
	extr.u r17=r25,13,7
	addl r20=@gprel(asm_mov_from_reg),gp
	;;
	adds r30=kvm_asm_mov_to_rr_back_1-asm_mov_from_reg,r20
	shladd r16=r16,4,r20
	mov r22=b0
	;;
	add r27=VMM_VCPU_VRR0_OFFSET,r21
	mov b0=r16
	br.many b0
	;;
kvm_asm_mov_to_rr_back_1:
	adds r30=kvm_asm_mov_to_rr_back_2-asm_mov_from_reg,r20
	shr.u r23=r19,61
	shladd r17=r17,4,r20
	;;
	//if rr6, go back
	cmp.eq p6,p0=6,r23
	mov b0=r22
	(p6) br.cond.dpnt.many kvm_virtualization_fault_back
	;;
	mov r28=r19
	mov b0=r17
	br.many b0
kvm_asm_mov_to_rr_back_2:
	adds r30=kvm_resume_to_guest-asm_mov_from_reg,r20
	shladd r27=r23,3,r27
	;; // vrr.rid<<4 |0xe
	st8 [r27]=r19
	mov b0=r30
	;;
	extr.u r16=r19,8,26
	extr.u r18 =r19,2,6
	mov r17 =0xe
	;;
	shladd r16 = r16, 4, r17
	extr.u r19 =r19,0,8
	;;
	shl r16 = r16,8
	;;
	add r19 = r19, r16
	;; //set ve 1
	dep r19=-1,r19,0,1
	cmp.lt p6,p0=14,r18
	;;
	(p6) mov r18=14
	;;
	(p6) dep r19=r18,r19,2,6
	;;
	cmp.eq p6,p0=0,r23
	;;
	cmp.eq.or p6,p0=4,r23
	;;
	adds r16=VMM_VCPU_MODE_FLAGS_OFFSET,r21
	(p6) adds r17=VMM_VCPU_META_SAVED_RR0_OFFSET,r21
	;;
	ld4 r16=[r16]
	cmp.eq p7,p0=r0,r0
	(p6) shladd r17=r23,1,r17
	;;
	(p6) st8 [r17]=r19
	(p6) tbit.nz p6,p7=r16,0
	;;
	(p7) mov rr[r28]=r19
	mov r24=r22
	br.many b0
END(kvm_asm_mov_to_rr)


//rsm
GLOBAL_ENTRY(kvm_asm_rsm)
#ifndef ACCE_RSM
	br.many kvm_virtualization_fault_back
#endif
	VMX_VPS_SYNC_READ
	;;
	extr.u r26=r25,6,21
	extr.u r27=r25,31,2
	;;
	extr.u r28=r25,36,1
	dep r26=r27,r26,21,2
	;;
	add r17=VPD_VPSR_START_OFFSET,r16
	add r22=VMM_VCPU_MODE_FLAGS_OFFSET,r21
	//r26 is imm24
	dep r26=r28,r26,23,1
	;;
	ld8 r18=[r17]
	movl r28=IA64_PSR_IC+IA64_PSR_I+IA64_PSR_DT+IA64_PSR_SI
	ld4 r23=[r22]
	sub r27=-1,r26
	mov r24=b0
	;;
	mov r20=cr.ipsr
	or r28=r27,r28
	and r19=r18,r27
	;;
	st8 [r17]=r19
	and r20=r20,r28
	/* Comment it out due to short of fp lazy alorgithm support
	adds r27=IA64_VCPU_FP_PSR_OFFSET,r21
	;;
	ld8 r27=[r27]
	;;
	tbit.nz p8,p0= r27,IA64_PSR_DFH_BIT
	;;
	(p8) dep r20=-1,r20,IA64_PSR_DFH_BIT,1
	*/
	;;
	mov cr.ipsr=r20
	tbit.nz p6,p0=r23,0
	;;
	tbit.z.or p6,p0=r26,IA64_PSR_DT_BIT
	(p6) br.dptk kvm_resume_to_guest_with_sync
	;;
	add r26=VMM_VCPU_META_RR0_OFFSET,r21
	add r27=VMM_VCPU_META_RR0_OFFSET+8,r21
	dep r23=-1,r23,0,1
	;;
	ld8 r26=[r26]
	ld8 r27=[r27]
	st4 [r22]=r23
	dep.z r28=4,61,3
	;;
	mov rr[r0]=r26
	;;
	mov rr[r28]=r27
	;;
	srlz.d
	br.many kvm_resume_to_guest_with_sync
END(kvm_asm_rsm)


//ssm
GLOBAL_ENTRY(kvm_asm_ssm)
#ifndef ACCE_SSM
	br.many kvm_virtualization_fault_back
#endif
	VMX_VPS_SYNC_READ
	;;
	extr.u r26=r25,6,21
	extr.u r27=r25,31,2
	;;
	extr.u r28=r25,36,1
	dep r26=r27,r26,21,2
	;;  //r26 is imm24
	add r27=VPD_VPSR_START_OFFSET,r16
	dep r26=r28,r26,23,1
	;;  //r19 vpsr
	ld8 r29=[r27]
	mov r24=b0
	;;
	add r22=VMM_VCPU_MODE_FLAGS_OFFSET,r21
	mov r20=cr.ipsr
	or r19=r29,r26
	;;
	ld4 r23=[r22]
	st8 [r27]=r19
	or r20=r20,r26
	;;
	mov cr.ipsr=r20
	movl r28=IA64_PSR_DT+IA64_PSR_RT+IA64_PSR_IT
	;;
	and r19=r28,r19
	tbit.z p6,p0=r23,0
	;;
	cmp.ne.or p6,p0=r28,r19
	(p6) br.dptk kvm_asm_ssm_1
	;;
	add r26=VMM_VCPU_META_SAVED_RR0_OFFSET,r21
	add r27=VMM_VCPU_META_SAVED_RR0_OFFSET+8,r21
	dep r23=0,r23,0,1
	;;
	ld8 r26=[r26]
	ld8 r27=[r27]
	st4 [r22]=r23
	dep.z r28=4,61,3
	;;
	mov rr[r0]=r26
	;;
	mov rr[r28]=r27
	;;
	srlz.d
	;;
kvm_asm_ssm_1:
	tbit.nz p6,p0=r29,IA64_PSR_I_BIT
	;;
	tbit.z.or p6,p0=r19,IA64_PSR_I_BIT
	(p6) br.dptk kvm_resume_to_guest_with_sync
	;;
	add r29=VPD_VTPR_START_OFFSET,r16
	add r30=VPD_VHPI_START_OFFSET,r16
	;;
	ld8 r29=[r29]
	ld8 r30=[r30]
	;;
	extr.u r17=r29,4,4
	extr.u r18=r29,16,1
	;;
	dep r17=r18,r17,4,1
	;;
	cmp.gt p6,p0=r30,r17
	(p6) br.dpnt.few kvm_asm_dispatch_vexirq
	br.many kvm_resume_to_guest_with_sync
END(kvm_asm_ssm)


//mov psr.l=r2
GLOBAL_ENTRY(kvm_asm_mov_to_psr)
#ifndef ACCE_MOV_TO_PSR
	br.many kvm_virtualization_fault_back
#endif
	VMX_VPS_SYNC_READ
	;;
	extr.u r26=r25,13,7 //r2
	addl r20=@gprel(asm_mov_from_reg),gp
	;;
	adds r30=kvm_asm_mov_to_psr_back-asm_mov_from_reg,r20
	shladd r26=r26,4,r20
	mov r24=b0
	;;
	add r27=VPD_VPSR_START_OFFSET,r16
	mov b0=r26
	br.many b0
	;;
kvm_asm_mov_to_psr_back:
	ld8 r17=[r27]
	add r22=VMM_VCPU_MODE_FLAGS_OFFSET,r21
	dep r19=0,r19,32,32
	;;
	ld4 r23=[r22]
	dep r18=0,r17,0,32
	;;
	add r30=r18,r19
	movl r28=IA64_PSR_DT+IA64_PSR_RT+IA64_PSR_IT
	;;
	st8 [r27]=r30
	and r27=r28,r30
	and r29=r28,r17
	;;
	cmp.eq p5,p0=r29,r27
	cmp.eq p6,p7=r28,r27
	(p5) br.many kvm_asm_mov_to_psr_1
	;;
	//virtual to physical
	(p7) add r26=VMM_VCPU_META_RR0_OFFSET,r21
	(p7) add r27=VMM_VCPU_META_RR0_OFFSET+8,r21
	(p7) dep r23=-1,r23,0,1
	;;
	//physical to virtual
	(p6) add r26=VMM_VCPU_META_SAVED_RR0_OFFSET,r21
	(p6) add r27=VMM_VCPU_META_SAVED_RR0_OFFSET+8,r21
	(p6) dep r23=0,r23,0,1
	;;
	ld8 r26=[r26]
	ld8 r27=[r27]
	st4 [r22]=r23
	dep.z r28=4,61,3
	;;
	mov rr[r0]=r26
	;;
	mov rr[r28]=r27
	;;
	srlz.d
	;;
kvm_asm_mov_to_psr_1:
	mov r20=cr.ipsr
	movl r28=IA64_PSR_IC+IA64_PSR_I+IA64_PSR_DT+IA64_PSR_SI+IA64_PSR_RT
	;;
	or r19=r19,r28
	dep r20=0,r20,0,32
	;;
	add r20=r19,r20
	mov b0=r24
	;;
	/* Comment it out due to short of fp lazy algorithm support
	adds r27=IA64_VCPU_FP_PSR_OFFSET,r21
	;;
	ld8 r27=[r27]
	;;
	tbit.nz p8,p0=r27,IA64_PSR_DFH_BIT
	;;
	(p8) dep r20=-1,r20,IA64_PSR_DFH_BIT,1
	;;
	*/
	mov cr.ipsr=r20
	cmp.ne p6,p0=r0,r0
	;;
	tbit.nz.or p6,p0=r17,IA64_PSR_I_BIT
	tbit.z.or p6,p0=r30,IA64_PSR_I_BIT
	(p6) br.dpnt.few kvm_resume_to_guest_with_sync
	;;
	add r29=VPD_VTPR_START_OFFSET,r16
	add r30=VPD_VHPI_START_OFFSET,r16
	;;
	ld8 r29=[r29]
	ld8 r30=[r30]
	;;
	extr.u r17=r29,4,4
	extr.u r18=r29,16,1
	;;
	dep r17=r18,r17,4,1
	;;
	cmp.gt p6,p0=r30,r17
	(p6) br.dpnt.few kvm_asm_dispatch_vexirq
	br.many kvm_resume_to_guest_with_sync
END(kvm_asm_mov_to_psr)


ENTRY(kvm_asm_dispatch_vexirq)
//increment iip
	mov r17 = b0
	mov r18 = r31
{.mii
	add r25=VMM_VPD_BASE_OFFSET,r21
	nop 0x0
	mov r24 = ip
	;;
}
{.mmb
	add r24 = 0x20, r24
	ld8 r25 = [r25]
	br.sptk.many kvm_vps_sync_write
}
	mov b0 =r17
	mov r16=cr.ipsr
	mov r31 = r18
	mov r19 = 37
	;;
	extr.u r17=r16,IA64_PSR_RI_BIT,2
	tbit.nz p6,p7=r16,IA64_PSR_RI_BIT+1
	;;
	(p6) mov r18=cr.iip
	(p6) mov r17=r0
	(p7) add r17=1,r17
	;;
	(p6) add r18=0x10,r18
	dep r16=r17,r16,IA64_PSR_RI_BIT,2
	;;
	(p6) mov cr.iip=r18
	mov cr.ipsr=r16
	mov r30 =1
	br.many kvm_dispatch_vexirq
END(kvm_asm_dispatch_vexirq)

// thash
// TODO: add support when pta.vf = 1
GLOBAL_ENTRY(kvm_asm_thash)
#ifndef ACCE_THASH
	br.many kvm_virtualization_fault_back
#endif
	extr.u r17=r25,20,7		// get r3 from opcode in r25
	extr.u r18=r25,6,7		// get r1 from opcode in r25
	addl r20=@gprel(asm_mov_from_reg),gp
	;;
	adds r30=kvm_asm_thash_back1-asm_mov_from_reg,r20
	shladd r17=r17,4,r20	// get addr of MOVE_FROM_REG(r17)
	adds r16=VMM_VPD_BASE_OFFSET,r21	// get vcpu.arch.priveregs
	;;
	mov r24=b0
	;;
	ld8 r16=[r16]		// get VPD addr
	mov b0=r17
	br.many b0			// r19 return value
	;;
kvm_asm_thash_back1:
	shr.u r23=r19,61		// get RR number
	adds r28=VMM_VCPU_VRR0_OFFSET,r21	// get vcpu->arch.vrr[0]'s addr
	adds r16=VMM_VPD_VPTA_OFFSET,r16	// get vpta
	;;
	shladd r27=r23,3,r28	// get vcpu->arch.vrr[r23]'s addr
	ld8 r17=[r16]		// get PTA
	mov r26=1
	;;
	extr.u r29=r17,2,6	// get pta.size
	ld8 r28=[r27]		// get vcpu->arch.vrr[r23]'s value
	;;
	mov b0=r24
	//Fallback to C if pta.vf is set
	tbit.nz p6,p0=r17, 8
	;;
	(p6) mov r24=EVENT_THASH
	(p6) br.cond.dpnt.many kvm_virtualization_fault_back
	extr.u r28=r28,2,6	// get rr.ps
	shl r22=r26,r29		// 1UL << pta.size
	;;
	shr.u r23=r19,r28	// vaddr >> rr.ps
	adds r26=3,r29		// pta.size + 3
	shl r27=r17,3		// pta << 3
	;;
	shl r23=r23,3		// (vaddr >> rr.ps) << 3
	shr.u r27=r27,r26	// (pta << 3) >> (pta.size+3)
	movl r16=7<<61
	;;
	adds r22=-1,r22		// (1UL << pta.size) - 1
	shl r27=r27,r29		// ((pta<<3)>>(pta.size+3))<<pta.size
	and r19=r19,r16		// vaddr & VRN_MASK
	;;
	and r22=r22,r23		// vhpt_offset
	or r19=r19,r27 // (vadr&VRN_MASK)|(((pta<<3)>>(pta.size + 3))<<pta.size)
	adds r26=asm_mov_to_reg-asm_mov_from_reg,r20
	;;
	or r19=r19,r22		// calc pval
	shladd r17=r18,4,r26
	adds r30=kvm_resume_to_guest-asm_mov_from_reg,r20
	;;
	mov b0=r17
	br.many b0
END(kvm_asm_thash)

#define MOV_TO_REG0	\
{;			\
	nop.b 0x0;		\
	nop.b 0x0;		\
	nop.b 0x0;		\
	;;			\
};


#define MOV_TO_REG(n)	\
{;			\
	mov r##n##=r19;	\
	mov b0=r30;	\
	br.sptk.many b0;	\
	;;			\
};


#define MOV_FROM_REG(n)	\
{;				\
	mov r19=r##n##;		\
	mov b0=r30;		\
	br.sptk.many b0;		\
	;;				\
};


#define MOV_TO_BANK0_REG(n)			\
ENTRY_MIN_ALIGN(asm_mov_to_bank0_reg##n##);	\
{;						\
	mov r26=r2;				\
	mov r2=r19;				\
	bsw.1;					\
	;;						\
};						\
{;						\
	mov r##n##=r2;				\
	nop.b 0x0;					\
	bsw.0;					\
	;;						\
};						\
{;						\
	mov r2=r26;				\
	mov b0=r30;				\
	br.sptk.many b0;				\
	;;						\
};						\
END(asm_mov_to_bank0_reg##n##)


#define MOV_FROM_BANK0_REG(n)			\
ENTRY_MIN_ALIGN(asm_mov_from_bank0_reg##n##);	\
{;						\
	mov r26=r2;				\
	nop.b 0x0;					\
	bsw.1;					\
	;;						\
};						\
{;						\
	mov r2=r##n##;				\
	nop.b 0x0;					\
	bsw.0;					\
	;;						\
};						\
{;						\
	mov r19=r2;				\
	mov r2=r26;				\
	mov b0=r30;				\
};						\
{;						\
	nop.b 0x0;					\
	nop.b 0x0;					\
	br.sptk.many b0;				\
	;;						\
};						\
END(asm_mov_from_bank0_reg##n##)


#define JMP_TO_MOV_TO_BANK0_REG(n)		\
{;						\
	nop.b 0x0;					\
	nop.b 0x0;					\
	br.sptk.many asm_mov_to_bank0_reg##n##;	\
	;;						\
}


#define JMP_TO_MOV_FROM_BANK0_REG(n)		\
{;						\
	nop.b 0x0;					\
	nop.b 0x0;					\
	br.sptk.many asm_mov_from_bank0_reg##n##;	\
	;;						\
}


MOV_FROM_BANK0_REG(16)
MOV_FROM_BANK0_REG(17)
MOV_FROM_BANK0_REG(18)
MOV_FROM_BANK0_REG(19)
MOV_FROM_BANK0_REG(20)
MOV_FROM_BANK0_REG(21)
MOV_FROM_BANK0_REG(22)
MOV_FROM_BANK0_REG(23)
MOV_FROM_BANK0_REG(24)
MOV_FROM_BANK0_REG(25)
MOV_FROM_BANK0_REG(26)
MOV_FROM_BANK0_REG(27)
MOV_FROM_BANK0_REG(28)
MOV_FROM_BANK0_REG(29)
MOV_FROM_BANK0_REG(30)
MOV_FROM_BANK0_REG(31)


// mov from reg table
ENTRY(asm_mov_from_reg)
	MOV_FROM_REG(0)
	MOV_FROM_REG(1)
	MOV_FROM_REG(2)
	MOV_FROM_REG(3)
	MOV_FROM_REG(4)
	MOV_FROM_REG(5)
	MOV_FROM_REG(6)
	MOV_FROM_REG(7)
	MOV_FROM_REG(8)
	MOV_FROM_REG(9)
	MOV_FROM_REG(10)
	MOV_FROM_REG(11)
	MOV_FROM_REG(12)
	MOV_FROM_REG(13)
	MOV_FROM_REG(14)
	MOV_FROM_REG(15)
	JMP_TO_MOV_FROM_BANK0_REG(16)
	JMP_TO_MOV_FROM_BANK0_REG(17)
	JMP_TO_MOV_FROM_BANK0_REG(18)
	JMP_TO_MOV_FROM_BANK0_REG(19)
	JMP_TO_MOV_FROM_BANK0_REG(20)
	JMP_TO_MOV_FROM_BANK0_REG(21)
	JMP_TO_MOV_FROM_BANK0_REG(22)
	JMP_TO_MOV_FROM_BANK0_REG(23)
	JMP_TO_MOV_FROM_BANK0_REG(24)
	JMP_TO_MOV_FROM_BANK0_REG(25)
	JMP_TO_MOV_FROM_BANK0_REG(26)
	JMP_TO_MOV_FROM_BANK0_REG(27)
	JMP_TO_MOV_FROM_BANK0_REG(28)
	JMP_TO_MOV_FROM_BANK0_REG(29)
	JMP_TO_MOV_FROM_BANK0_REG(30)
	JMP_TO_MOV_FROM_BANK0_REG(31)
	MOV_FROM_REG(32)
	MOV_FROM_REG(33)
	MOV_FROM_REG(34)
	MOV_FROM_REG(35)
	MOV_FROM_REG(36)
	MOV_FROM_REG(37)
	MOV_FROM_REG(38)
	MOV_FROM_REG(39)
	MOV_FROM_REG(40)
	MOV_FROM_REG(41)
	MOV_FROM_REG(42)
	MOV_FROM_REG(43)
	MOV_FROM_REG(44)
	MOV_FROM_REG(45)
	MOV_FROM_REG(46)
	MOV_FROM_REG(47)
	MOV_FROM_REG(48)
	MOV_FROM_REG(49)
	MOV_FROM_REG(50)
	MOV_FROM_REG(51)
	MOV_FROM_REG(52)
	MOV_FROM_REG(53)
	MOV_FROM_REG(54)
	MOV_FROM_REG(55)
	MOV_FROM_REG(56)
	MOV_FROM_REG(57)
	MOV_FROM_REG(58)
	MOV_FROM_REG(59)
	MOV_FROM_REG(60)
	MOV_FROM_REG(61)
	MOV_FROM_REG(62)
	MOV_FROM_REG(63)
	MOV_FROM_REG(64)
	MOV_FROM_REG(65)
	MOV_FROM_REG(66)
	MOV_FROM_REG(67)
	MOV_FROM_REG(68)
	MOV_FROM_REG(69)
	MOV_FROM_REG(70)
	MOV_FROM_REG(71)
	MOV_FROM_REG(72)
	MOV_FROM_REG(73)
	MOV_FROM_REG(74)
	MOV_FROM_REG(75)
	MOV_FROM_REG(76)
	MOV_FROM_REG(77)
	MOV_FROM_REG(78)
	MOV_FROM_REG(79)
	MOV_FROM_REG(80)
	MOV_FROM_REG(81)
	MOV_FROM_REG(82)
	MOV_FROM_REG(83)
	MOV_FROM_REG(84)
	MOV_FROM_REG(85)
	MOV_FROM_REG(86)
	MOV_FROM_REG(87)
	MOV_FROM_REG(88)
	MOV_FROM_REG(89)
	MOV_FROM_REG(90)
	MOV_FROM_REG(91)
	MOV_FROM_REG(92)
	MOV_FROM_REG(93)
	MOV_FROM_REG(94)
	MOV_FROM_REG(95)
	MOV_FROM_REG(96)
	MOV_FROM_REG(97)
	MOV_FROM_REG(98)
	MOV_FROM_REG(99)
	MOV_FROM_REG(100)
	MOV_FROM_REG(101)
	MOV_FROM_REG(102)
	MOV_FROM_REG(103)
	MOV_FROM_REG(104)
	MOV_FROM_REG(105)
	MOV_FROM_REG(106)
	MOV_FROM_REG(107)
	MOV_FROM_REG(108)
	MOV_FROM_REG(109)
	MOV_FROM_REG(110)
	MOV_FROM_REG(111)
	MOV_FROM_REG(112)
	MOV_FROM_REG(113)
	MOV_FROM_REG(114)
	MOV_FROM_REG(115)
	MOV_FROM_REG(116)
	MOV_FROM_REG(117)
	MOV_FROM_REG(118)
	MOV_FROM_REG(119)
	MOV_FROM_REG(120)
	MOV_FROM_REG(121)
	MOV_FROM_REG(122)
	MOV_FROM_REG(123)
	MOV_FROM_REG(124)
	MOV_FROM_REG(125)
	MOV_FROM_REG(126)
	MOV_FROM_REG(127)
END(asm_mov_from_reg)


/* must be in bank 0
 * parameter:
 * r31: pr
 * r24: b0
 */
ENTRY(kvm_resume_to_guest_with_sync)
	adds r19=VMM_VPD_BASE_OFFSET,r21
	mov r16 = r31
	mov r17 = r24
	;;
{.mii
	ld8 r25 =[r19]
	nop 0x0
	mov r24 = ip
	;;
}
{.mmb
	add r24 =0x20, r24
	nop 0x0
	br.sptk.many kvm_vps_sync_write
}

	mov r31 = r16
	mov r24 =r17
	;;
	br.sptk.many kvm_resume_to_guest
END(kvm_resume_to_guest_with_sync)

ENTRY(kvm_resume_to_guest)
	adds r16 = VMM_VCPU_SAVED_GP_OFFSET,r21
	;;
	ld8 r1 =[r16]
	adds r20 = VMM_VCPU_VSA_BASE_OFFSET,r21
	;;
	mov r16=cr.ipsr
	;;
	ld8 r20 = [r20]
	adds r19=VMM_VPD_BASE_OFFSET,r21
	;;
	ld8 r25=[r19]
	extr.u r17=r16,IA64_PSR_RI_BIT,2
	tbit.nz p6,p7=r16,IA64_PSR_RI_BIT+1
	;;
	(p6) mov r18=cr.iip
	(p6) mov r17=r0
	;;
	(p6) add r18=0x10,r18
	(p7) add r17=1,r17
	;;
	(p6) mov cr.iip=r18
	dep r16=r17,r16,IA64_PSR_RI_BIT,2
	;;
	mov cr.ipsr=r16
	adds r19= VPD_VPSR_START_OFFSET,r25
	add r28=PAL_VPS_RESUME_NORMAL,r20
	add r29=PAL_VPS_RESUME_HANDLER,r20
	;;
	ld8 r19=[r19]
	mov b0=r29
	mov r27=cr.isr
	;;
	tbit.z p6,p7 = r19,IA64_PSR_IC_BIT		// p7=vpsr.ic
	shr r27=r27,IA64_ISR_IR_BIT
	;;
	(p6) ld8 r26=[r25]
	(p7) mov b0=r28
	;;
	(p6) dep r26=r27,r26,63,1
	mov pr=r31,-2
	br.sptk.many b0             // call pal service
	;;
END(kvm_resume_to_guest)


MOV_TO_BANK0_REG(16)
MOV_TO_BANK0_REG(17)
MOV_TO_BANK0_REG(18)
MOV_TO_BANK0_REG(19)
MOV_TO_BANK0_REG(20)
MOV_TO_BANK0_REG(21)
MOV_TO_BANK0_REG(22)
MOV_TO_BANK0_REG(23)
MOV_TO_BANK0_REG(24)
MOV_TO_BANK0_REG(25)
MOV_TO_BANK0_REG(26)
MOV_TO_BANK0_REG(27)
MOV_TO_BANK0_REG(28)
MOV_TO_BANK0_REG(29)
MOV_TO_BANK0_REG(30)
MOV_TO_BANK0_REG(31)


// mov to reg table
ENTRY(asm_mov_to_reg)
	MOV_TO_REG0
	MOV_TO_REG(1)
	MOV_TO_REG(2)
	MOV_TO_REG(3)
	MOV_TO_REG(4)
	MOV_TO_REG(5)
	MOV_TO_REG(6)
	MOV_TO_REG(7)
	MOV_TO_REG(8)
	MOV_TO_REG(9)
	MOV_TO_REG(10)
	MOV_TO_REG(11)
	MOV_TO_REG(12)
	MOV_TO_REG(13)
	MOV_TO_REG(14)
	MOV_TO_REG(15)
	JMP_TO_MOV_TO_BANK0_REG(16)
	JMP_TO_MOV_TO_BANK0_REG(17)
	JMP_TO_MOV_TO_BANK0_REG(18)
	JMP_TO_MOV_TO_BANK0_REG(19)
	JMP_TO_MOV_TO_BANK0_REG(20)
	JMP_TO_MOV_TO_BANK0_REG(21)
	JMP_TO_MOV_TO_BANK0_REG(22)
	JMP_TO_MOV_TO_BANK0_REG(23)
	JMP_TO_MOV_TO_BANK0_REG(24)
	JMP_TO_MOV_TO_BANK0_REG(25)
	JMP_TO_MOV_TO_BANK0_REG(26)
	JMP_TO_MOV_TO_BANK0_REG(27)
	JMP_TO_MOV_TO_BANK0_REG(28)
	JMP_TO_MOV_TO_BANK0_REG(29)
	JMP_TO_MOV_TO_BANK0_REG(30)
	JMP_TO_MOV_TO_BANK0_REG(31)
	MOV_TO_REG(32)
	MOV_TO_REG(33)
	MOV_TO_REG(34)
	MOV_TO_REG(35)
	MOV_TO_REG(36)
	MOV_TO_REG(37)
	MOV_TO_REG(38)
	MOV_TO_REG(39)
	MOV_TO_REG(40)
	MOV_TO_REG(41)
	MOV_TO_REG(42)
	MOV_TO_REG(43)
	MOV_TO_REG(44)
	MOV_TO_REG(45)
	MOV_TO_REG(46)
	MOV_TO_REG(47)
	MOV_TO_REG(48)
	MOV_TO_REG(49)
	MOV_TO_REG(50)
	MOV_TO_REG(51)
	MOV_TO_REG(52)
	MOV_TO_REG(53)
	MOV_TO_REG(54)
	MOV_TO_REG(55)
	MOV_TO_REG(56)
	MOV_TO_REG(57)
	MOV_TO_REG(58)
	MOV_TO_REG(59)
	MOV_TO_REG(60)
	MOV_TO_REG(61)
	MOV_TO_REG(62)
	MOV_TO_REG(63)
	MOV_TO_REG(64)
	MOV_TO_REG(65)
	MOV_TO_REG(66)
	MOV_TO_REG(67)
	MOV_TO_REG(68)
	MOV_TO_REG(69)
	MOV_TO_REG(70)
	MOV_TO_REG(71)
	MOV_TO_REG(72)
	MOV_TO_REG(73)
	MOV_TO_REG(74)
	MOV_TO_REG(75)
	MOV_TO_REG(76)
	MOV_TO_REG(77)
	MOV_TO_REG(78)
	MOV_TO_REG(79)
	MOV_TO_REG(80)
	MOV_TO_REG(81)
	MOV_TO_REG(82)
	MOV_TO_REG(83)
	MOV_TO_REG(84)
	MOV_TO_REG(85)
	MOV_TO_REG(86)
	MOV_TO_REG(87)
	MOV_TO_REG(88)
	MOV_TO_REG(89)
	MOV_TO_REG(90)
	MOV_TO_REG(91)
	MOV_TO_REG(92)
	MOV_TO_REG(93)
	MOV_TO_REG(94)
	MOV_TO_REG(95)
	MOV_TO_REG(96)
	MOV_TO_REG(97)
	MOV_TO_REG(98)
	MOV_TO_REG(99)
	MOV_TO_REG(100)
	MOV_TO_REG(101)
	MOV_TO_REG(102)
	MOV_TO_REG(103)
	MOV_TO_REG(104)
	MOV_TO_REG(105)
	MOV_TO_REG(106)
	MOV_TO_REG(107)
	MOV_TO_REG(108)
	MOV_TO_REG(109)
	MOV_TO_REG(110)
	MOV_TO_REG(111)
	MOV_TO_REG(112)
	MOV_TO_REG(113)
	MOV_TO_REG(114)
	MOV_TO_REG(115)
	MOV_TO_REG(116)
	MOV_TO_REG(117)
	MOV_TO_REG(118)
	MOV_TO_REG(119)
	MOV_TO_REG(120)
	MOV_TO_REG(121)
	MOV_TO_REG(122)
	MOV_TO_REG(123)
	MOV_TO_REG(124)
	MOV_TO_REG(125)
	MOV_TO_REG(126)
	MOV_TO_REG(127)
END(asm_mov_to_reg)