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KVM: ppc: refactor instruction emulation into generic and core-specific pieces

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Cores provide 3 emulation hooks, implemented for example in the new
4xx_emulate.c:
kvmppc_core_emulate_op
kvmppc_core_emulate_mtspr
kvmppc_core_emulate_mfspr

Strictly speaking the last two aren't necessary, but provide for more
informative error reporting ("unknown SPR").

Long term I'd like to have instruction decoding autogenerated from tables of
opcodes, and that way we could aggregate universal, Book E, and core-specific
instructions more easily and without redundant switch statements.

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Hollis Blanchard
2008-11-05 09:36:16 -06:00
committed by Avi Kivity
parent c381a04313
commit 75f74f0dbe
8 changed files with 415 additions and 276 deletions
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4
arch/powerpc/kvm/44x_tlb.c
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@ -301,7 +301,7 @@ static int tlbe_is_host_safe(const struct kvm_vcpu *vcpu,
return 1;
}
int kvmppc_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws)
int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws)
{
u64 eaddr;
u64 raddr;
@ -363,7 +363,7 @@ int kvmppc_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws)
return EMULATE_DONE;
}
int kvmppc_emul_tlbsx(struct kvm_vcpu *vcpu, u8 rt, u8 ra, u8 rb, u8 rc)
int kvmppc_44x_emul_tlbsx(struct kvm_vcpu *vcpu, u8 rt, u8 ra, u8 rb, u8 rc)
{
u32 ea;
int index;