C++ (Cpp) kvm_vcpu_dabt_isextabt Examples

Example #1

File: mmio.c Project: 1n00bB/android_kernel_lenovo_a6010

static int decode_hsr(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
		      struct kvm_exit_mmio *mmio)
{
	unsigned long rt, len;
	bool is_write, sign_extend;

	if (kvm_vcpu_dabt_isextabt(vcpu)) {
		/* cache operation on I/O addr, tell guest unsupported */
		kvm_inject_dabt(vcpu, kvm_vcpu_get_hfar(vcpu));
		return 1;
	}

	if (kvm_vcpu_dabt_iss1tw(vcpu)) {
		/* page table accesses IO mem: tell guest to fix its TTBR */
		kvm_inject_dabt(vcpu, kvm_vcpu_get_hfar(vcpu));
		return 1;
	}

	len = kvm_vcpu_dabt_get_as(vcpu);
	if (unlikely(len < 0))
		return len;

	is_write = kvm_vcpu_dabt_iswrite(vcpu);
	sign_extend = kvm_vcpu_dabt_issext(vcpu);
	rt = kvm_vcpu_dabt_get_rd(vcpu);

	if (kvm_vcpu_reg_is_pc(vcpu, rt)) {
		/* IO memory trying to read/write pc */
		kvm_inject_pabt(vcpu, kvm_vcpu_get_hfar(vcpu));
		return 1;
	}

	mmio->is_write = is_write;
	mmio->phys_addr = fault_ipa;
	mmio->len = len;
	vcpu->arch.mmio_decode.sign_extend = sign_extend;
	vcpu->arch.mmio_decode.rt = rt;

	/*
	 * The MMIO instruction is emulated and should not be re-executed
	 * in the guest.
	 */
	kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));
	return 0;
}

Example #2

File: mmio.c Project: quadcores/cbs_4.2.4

static int decode_hsr(struct kvm_vcpu *vcpu, bool *is_write, int *len)
{
    unsigned long rt;
    int access_size;
    bool sign_extend;

    if (kvm_vcpu_dabt_isextabt(vcpu)) {
        /* cache operation on I/O addr, tell guest unsupported */
        kvm_inject_dabt(vcpu, kvm_vcpu_get_hfar(vcpu));
        return 1;
    }

    if (kvm_vcpu_dabt_iss1tw(vcpu)) {
        /* page table accesses IO mem: tell guest to fix its TTBR */
        kvm_inject_dabt(vcpu, kvm_vcpu_get_hfar(vcpu));
        return 1;
    }

    access_size = kvm_vcpu_dabt_get_as(vcpu);
    if (unlikely(access_size < 0))
        return access_size;

    *is_write = kvm_vcpu_dabt_iswrite(vcpu);
    sign_extend = kvm_vcpu_dabt_issext(vcpu);
    rt = kvm_vcpu_dabt_get_rd(vcpu);

    *len = access_size;
    vcpu->arch.mmio_decode.sign_extend = sign_extend;
    vcpu->arch.mmio_decode.rt = rt;

    /*
     * The MMIO instruction is emulated and should not be re-executed
     * in the guest.
     */
    kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));
    return 0;
}