mirror of
https://chromium.googlesource.com/crosvm/crosvm
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1dab58a2cf
This search/replace updates all copyright notices to drop the "All rights reserved", Use "ChromiumOS" instead of "Chromium OS" and drops the trailing dots. This fulfills the request from legal and unifies our notices. ./tools/health-check has been updated to only accept this style. BUG=b:246579983 TEST=./tools/health-check Change-Id: I87a80701dc651f1baf4820e5cc42469d7c5f5bf7 Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3894243 Reviewed-by: Daniel Verkamp <dverkamp@chromium.org> Commit-Queue: Dennis Kempin <denniskempin@google.com>
75 lines
2.3 KiB
Rust
75 lines
2.3 KiB
Rust
// Copyright 2017 The ChromiumOS Authors
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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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use kvm::*;
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use kvm_sys::kvm_regs;
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use vm_memory::GuestAddress;
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use vm_memory::GuestMemory;
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#[test]
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fn test_run() {
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// This example based on https://lwn.net/Articles/658511/
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let code = [
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0xba, 0xf8, 0x03, /* mov $0x3f8, %dx */
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0x00, 0xd8, /* add %bl, %al */
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0x04, b'0', /* add $'0', %al */
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0xee, /* out %al, (%dx) */
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0xb0, b'\n', /* mov $'\n', %al */
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0xee, /* out %al, (%dx) */
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0x2e, 0xc6, 0x06, 0xf1, 0x10, 0x13, /* movb $0x13, %cs:0xf1 */
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0xf4, /* hlt */
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];
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let mem_size = 0x1000;
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let load_addr = GuestAddress(0x1000);
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let mem = GuestMemory::new(&[(load_addr, mem_size)]).unwrap();
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let kvm = Kvm::new().expect("new kvm failed");
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let vm = Vm::new(&kvm, mem).expect("new vm failed");
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let vcpu = Vcpu::new(0, &kvm, &vm).expect("new vcpu failed");
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vm.get_memory()
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.write_at_addr(&code, load_addr)
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.expect("Writing code to memory failed.");
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let mut vcpu_sregs = vcpu.get_sregs().expect("get sregs failed");
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assert_ne!(vcpu_sregs.cs.base, 0);
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assert_ne!(vcpu_sregs.cs.selector, 0);
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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 = 0x1000;
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vcpu_regs.rax = 2;
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vcpu_regs.rbx = 7;
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vcpu_regs.rflags = 2;
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vcpu.set_regs(&vcpu_regs).expect("set regs failed");
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let mut out = String::new();
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let runnable_vcpu = vcpu.to_runnable(None).unwrap();
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loop {
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match runnable_vcpu.run().expect("run failed") {
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VcpuExit::IoOut {
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port: 0x3f8,
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size,
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data,
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} => {
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assert_eq!(size, 1);
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out.push(data[0] as char);
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}
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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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assert_eq!(out, "9\n");
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let result: u8 = vm
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.get_memory()
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.read_obj_from_addr(load_addr.checked_add(0xf1).unwrap())
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.expect("Error reading the result.");
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assert_eq!(result, 0x13);
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}
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