Abdulla Kamar
627e15ffbf
Add code to manage EL2 CPU state. Currently this does the very minimum and sets the EL2 stack for each CPU. Next, I'll start setting up more of the EL2 state and also guest physical address space. Change-Id: I18b7f9d00b236e52cdc317dffe3b42fcffbcb8fe
52 linhas
1.5 KiB
C++
52 linhas
1.5 KiB
C++
// Copyright 2017 The Fuchsia Authors
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//
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file or at
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// https://opensource.org/licenses/MIT
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#include <arch/hypervisor.h>
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#include <fbl/auto_call.h>
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#include <magenta/errors.h>
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#include <vm/vm_object.h>
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#include "el2_cpu_state_priv.h"
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// static
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mx_status_t Guest::Create(fbl::RefPtr<VmObject> physmem, fbl::unique_ptr<Guest>* out) {
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uint8_t vmid;
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mx_status_t status = alloc_vmid(&vmid);
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if (status != MX_OK)
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return status;
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auto auto_call = fbl::MakeAutoCall([=]() { free_vmid(vmid); });
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fbl::AllocChecker ac;
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fbl::unique_ptr<Guest> guest(new (&ac) Guest(vmid));
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if (!ac.check())
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return MX_ERR_NO_MEMORY;
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auto_call.cancel();
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*out = fbl::move(guest);
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// TODO(abdulla): We intentionally return MX_ERR_NOT_SUPPORTED, as the guest
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// physical address space has not been wired up yet.
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return MX_ERR_NOT_SUPPORTED;
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}
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Guest::Guest(uint8_t vmid)
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: vmid_(vmid) {}
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Guest::~Guest() {
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free_vmid(vmid_);
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}
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mx_status_t arch_guest_create(fbl::RefPtr<VmObject> physmem, fbl::unique_ptr<Guest>* guest) {
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if (arm64_get_boot_el() < 2)
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return MX_ERR_NOT_SUPPORTED;
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return Guest::Create(fbl::move(physmem), guest);
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}
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mx_status_t arch_guest_set_trap(Guest* guest, uint32_t kind, mx_vaddr_t addr, size_t len,
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fbl::RefPtr<PortDispatcher> port, uint64_t key) {
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return MX_ERR_NOT_SUPPORTED;
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}
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