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https://chromium.googlesource.com/crosvm/crosvm
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55a9e504be
Now that cargo fmt has landed, run it over everything at once to bring rust source to the standard formatting. TEST=cargo test BUG=None Change-Id: Ic95a48725e5a40dcbd33ba6d5aef2bd01e91865b Reviewed-on: https://chromium-review.googlesource.com/1259287 Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com> Tested-by: Zach Reizner <zachr@chromium.org> Reviewed-by: Zach Reizner <zachr@chromium.org>
75 lines
2.4 KiB
Rust
75 lines
2.4 KiB
Rust
// Copyright 2017 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#![cfg(any(target_arch = "x86", target_arch = "x86_64"))]
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extern crate kvm;
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extern crate kvm_sys;
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extern crate sys_util;
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use kvm::*;
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use kvm_sys::kvm_regs;
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use sys_util::{GuestAddress, GuestMemory, MemoryMapping, SharedMemory};
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#[test]
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fn test_run() {
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/*
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0000 881C mov [si],bl
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0002 F4 hlt
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*/
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let code = [0x88, 0x1c, 0xf4];
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let mem_size = 0x10000;
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let load_addr = GuestAddress(0x1000);
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let guest_mem = GuestMemory::new(&[]).unwrap();
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let mut mem = SharedMemory::new(None).expect("failed to create shared memory");
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mem.set_size(mem_size)
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.expect("failed to set shared memory size");
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let mmap =
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MemoryMapping::from_fd(&mem, mem_size as usize).expect("failed to create memory mapping");
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mmap.write_slice(&code[..], load_addr.offset() as usize)
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.expect("Writing code to memory failed.");
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let kvm = Kvm::new().expect("new kvm failed");
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let mut vm = Vm::new(&kvm, guest_mem).expect("new vm failed");
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let vcpu = Vcpu::new(0, &kvm, &vm).expect("new vcpu failed");
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let mut vcpu_sregs = vcpu.get_sregs().expect("get sregs failed");
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vcpu_sregs.cs.base = 0;
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vcpu_sregs.cs.selector = 0;
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vcpu.set_sregs(&vcpu_sregs).expect("set sregs failed");
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let mut vcpu_regs: kvm_regs = unsafe { std::mem::zeroed() };
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vcpu_regs.rip = load_addr.offset() as u64;
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vcpu_regs.rflags = 2;
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// Write 0x12 to the beginning of the 9th page.
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vcpu_regs.rsi = 0x8000;
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vcpu_regs.rbx = 0x12;
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vcpu.set_regs(&vcpu_regs).expect("set regs failed");
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let slot = vm
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.add_device_memory(
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GuestAddress(0),
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MemoryMapping::from_fd(&mem, mem_size as usize)
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.expect("failed to create memory mapping"),
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false,
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true,
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).expect("failed to register memory");
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loop {
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match vcpu.run().expect("run failed") {
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VcpuExit::Hlt => break,
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r => panic!("unexpected exit reason: {:?}", r),
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}
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}
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let mut dirty_log = [0x0, 0x0];
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vm.get_dirty_log(slot, &mut dirty_log[..])
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.expect("failed to get dirty log");
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// Tests the 9th page was written to.
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assert_eq!(dirty_log[1], 0x1);
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assert_eq!(
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mmap.read_obj::<u64>(vcpu_regs.rsi as usize).unwrap(),
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vcpu_regs.rbx
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);
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}
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