static ExecutionResult Execute(ILoaderResult loaded)
{
// Loader Stage 2 - setup file
var image = loaded.Image.ToArray();
IKernel kernel;
Agent agent;
if (loaded.GetType() == typeof(LoaderResult32))
{
Console.Out.WriteLine("Emulating Linux 32-bit kernel syscall interface");
kernel = new Linux32Kernel();
agent = new Agent(kernel, image, ((LoaderResult32)loaded).EntryPoint);
}
else if (loaded.GetType() == typeof(LoaderResult64))
{
Console.Out.WriteLine("Emulating Linux 64-bit kernel syscall interface");
kernel = new Linux64Kernel();
agent = new Agent64(kernel, image, ((LoaderResult64)loaded).EntryPoint);
}
else
{
throw new InvalidOperationException();
}
int?ret;
do
{
ret = agent.Tick();
//agent.Dump();
} while (ret == null);
switch (ret)
{
case -666:
throw new Exception($"ERROR: Unknown bytecode!");
case 0:
Console.WriteLine("\r\n\r\nProgram terminated.");
return(new ExecutionResult(0));
default:
Console.WriteLine("\r\n\r\nProgram errored out.");
return(new ExecutionResult(ret ?? int.MinValue));
}
}
public void MOV_Bonanza64()
{
var programText = new string[] {
"section .text",
"global _start",
"_start:",
"mov rax, 0x1111222233334444 ; rax = 0x1111222233334444",
"mov eax, 0x55556666 ; actual: rax = 0x0000000055556666",
"mov rax, 0x1111222233334444 ; rax = 0x1111222233334444",
"mov ax, 0x7777 ; rax = 0x1111222233337777 (works!)",
"mov rax, 0x1111222233334444 ; rax = 0x1111222233334444",
"xor eax, eax ; actual: rax = 0x0000000000000000",
" ; again, it wiped whole register"
};
var compiler = new BytecodeCompiler <UInt64>();
var compiled = compiler.Compile(programText, "UNIT_TEST");
var agent = new Agent64(kernel, compiled.TextSegment, 0);
var ret = agent.Tick();
Xunit.Assert.Null(ret);
Xunit.Assert.Equal((ulong)0x1111222233334444, agent.ReadR64Register(Register.RAX));
ret = agent.Tick();
Xunit.Assert.Null(ret);
Xunit.Assert.Equal((ulong)0x0000000055556666, agent.ReadR64Register(Register.RAX));
ret = agent.Tick();
Xunit.Assert.Null(ret);
Xunit.Assert.Equal((ulong)0x1111222233334444, agent.ReadR64Register(Register.RAX));
ret = agent.Tick();
Xunit.Assert.Null(ret);
Xunit.Assert.Equal((ulong)0x1111222233337777, agent.ReadR64Register(Register.RAX));
ret = agent.Tick();
Xunit.Assert.Null(ret);
Xunit.Assert.Equal((ulong)0x1111222233334444, agent.ReadR64Register(Register.RAX));
ret = agent.Tick();
Xunit.Assert.Null(ret);
Xunit.Assert.Equal((ulong)0x0000000000000000, agent.ReadR64Register(Register.RAX));
}
