Signed-off-by: Sanjay Lal <sanjayl@xxxxxxxxxxx> --- arch/mips/kvm/kvm_vz_locore.S | 74 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 arch/mips/kvm/kvm_vz_locore.S diff --git a/arch/mips/kvm/kvm_vz_locore.S b/arch/mips/kvm/kvm_vz_locore.S new file mode 100644 index 0000000..6d037d7 --- /dev/null +++ b/arch/mips/kvm/kvm_vz_locore.S @@ -0,0 +1,74 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * KVM/MIPS: Assembler support for hardware virtualization extensions + * + * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. + * Authors: Yann Le Du <ledu@xxxxxxxxxxx> + */ + +#include <asm/asm.h> +#include <asm/asmmacro.h> +#include <asm/regdef.h> +#include <asm/mipsregs.h> +#include <asm/asm-offsets.h> +#include <asm/mipsvzregs.h> + +#define MIPSX(name) mips32_ ## name + +/* + * This routine sets GuestCtl1.RID to GUESTCTL1_VZ_ROOT_GUESTID + * Inputs: none + */ +LEAF(MIPSX(ClearGuestRID)) + .set push + .set mips32r2 + .set noreorder + mfc0 t0, CP0_GUESTCTL1 + addiu t1, zero, GUESTCTL1_VZ_ROOT_GUESTID + ins t0, t1, GUESTCTL1_RID_SHIFT, GUESTCTL1_RID_WIDTH + mtc0 t0, CP0_GUESTCTL1 # Set GuestCtl1.RID = GUESTCTL1_VZ_ROOT_GUESTID + ehb + j ra + nop # BD Slot + .set pop +END(MIPSX(ClearGuestRID)) + + +/* + * This routine sets GuestCtl1.RID to a new value + * Inputs: a0 = new GuestRID value (right aligned) + */ +LEAF(MIPSX(SetGuestRID)) + .set push + .set mips32r2 + .set noreorder + mfc0 t0, CP0_GUESTCTL1 + ins t0, a0, GUESTCTL1_RID_SHIFT, GUESTCTL1_RID_WIDTH + mtc0 t0, CP0_GUESTCTL1 # Set GuestCtl1.RID + ehb + j ra + nop # BD Slot + .set pop +END(MIPSX(SetGuestRID)) + + + /* + * This routine sets GuestCtl1.RID to GuestCtl1.ID + * Inputs: none + */ +LEAF(MIPSX(SetGuestRIDtoGuestID)) + .set push + .set mips32r2 + .set noreorder + mfc0 t0, CP0_GUESTCTL1 # Get current GuestID + ext t1, t0, GUESTCTL1_ID_SHIFT, GUESTCTL1_ID_WIDTH + ins t0, t1, GUESTCTL1_RID_SHIFT, GUESTCTL1_RID_WIDTH + mtc0 t0, CP0_GUESTCTL1 # Set GuestCtl1.RID = GuestCtl1.ID + ehb + j ra + nop # BD Slot + .set pop +END(MIPSX(SetGuestRIDtoGuestID)) -- 1.7.11.3
