Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 9b5ab005 authored by Paul Mackerras's avatar Paul Mackerras
Browse files

KVM: PPC: Add MMIO emulation for remaining floating-point instructions 



For completeness, this adds emulation of the lfiwax and lfiwzx
instructions.  With this, all floating-point load and store instructions
as of Power ISA V2.07 are emulated.

Signed-off-by: default avatarPaul Mackerras <paulus@ozlabs.org>
parent ceba57df

arch/powerpc/include/asm/ppc-opcode.h

+2 −0
Original line number Diff line number Diff line
@@ -122,6 +122,8 @@ 
#define OP_31_XOP_STFDX     727

#define OP_31_XOP_STFDUX    759

#define OP_31_XOP_LHBRX     790

#define OP_31_XOP_LFIWAX    855

#define OP_31_XOP_LFIWZX    887

#define OP_31_XOP_STHBRX    918

#define OP_31_XOP_STFIWX    983

arch/powerpc/kvm/emulate_loadstore.c

+14 −0
Original line number Diff line number Diff line
@@ -270,6 +270,20 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu) 
			kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed);

			break;



		case OP_31_XOP_LFIWAX:

			if (kvmppc_check_fp_disabled(vcpu))

				return EMULATE_DONE;

			emulated = kvmppc_handle_loads(run, vcpu,

				KVM_MMIO_REG_FPR|rt, 4, 1);

			break;



		case OP_31_XOP_LFIWZX:

			if (kvmppc_check_fp_disabled(vcpu))

				return EMULATE_DONE;

			emulated = kvmppc_handle_load(run, vcpu,

				KVM_MMIO_REG_FPR|rt, 4, 1);

			break;



		case OP_31_XOP_STFSX:

			if (kvmppc_check_fp_disabled(vcpu))

				return EMULATE_DONE;