public void SsaCallIndirect()
{
var m = new ProcedureBuilder("SsaCallIndirect");
var r1 = m.Reg32("r1");
var r2 = m.Reg32("r2");
m.Assign(r1, m.LoadDw(r2));
m.Call(r1, 4);
m.Return();
RunUnitTest(m, "Analysis/SsaCallIndirect.txt");
}
public void VpEquality2()
{
// Makes sure that
// y = x - 2
// if (y == 0) ...
// doesn't get munged into
// y = x - 2
// if (x == 2)
ProcedureBuilder m = new ProcedureBuilder();
var ssa = new SsaState(m.Procedure, null);
this.ssaIds = ssa.Identifiers;
Identifier x = Reg32("x");
Identifier y = Reg32("y");
var stmX = m.Assign(x, m.LoadDw(Constant.Word32(0x1000300)));
ssaIds[x].DefStatement = m.Block.Statements.Last;
var stmY = m.Assign(y, m.ISub(x, 2));
ssaIds[y].DefStatement = m.Block.Statements.Last;
var stm = m.BranchIf(m.Eq(y, 0), "test");
Assert.AreEqual("x = Mem0[0x01000300:word32]", stmX.ToString());
Assert.AreEqual("y = x - 0x00000002", stmY.ToString());
Assert.AreEqual("branch y == 0x00000000 test", stm.ToString());
var vp = new ValuePropagator(arch, ssa);
vp.Transform(stm);
Assert.AreEqual("branch x == 0x00000002 test", stm.Instruction.ToString());
}
public void SsaPushAndPop()
{
// Mirrors the pattern of stack accesses used by x86 compilers.
var m = new ProcedureBuilder("SsaPushAndPop");
var esp = EnsureRegister32(m, "esp");
var ebp = EnsureRegister32(m, "ebp");
var eax = EnsureRegister32(m, "eax");
m.Assign(esp, m.ISub(esp, 4));
m.Store(esp, ebp);
m.Assign(ebp, esp);
m.Assign(eax, m.LoadDw(m.IAdd(ebp, 8))); // dwArg04
m.Assign(ebp, m.LoadDw(esp));
m.Assign(esp, m.IAdd(esp,4));
m.Return();
RunUnitTest(m, "Analysis/SsaPushAndPop.txt");
}
public void DfaUnsignedDiv()
{
var m = new ProcedureBuilder();
var r1 = m.Register(1);
var r2 = m.Register(2);
var r2_r1 = m.Frame.EnsureSequence(r2.Storage, r1.Storage, PrimitiveType.Word64);
var tmp = m.Frame.CreateTemporary(r2_r1.DataType);
m.Assign(r1, m.LoadDw(m.Word32(0x123400)));
m.Assign(r2_r1, m.Seq(m.Word32(0), r1));
m.Assign(tmp, r2_r1);
m.Assign(r1, m.UDiv(tmp, m.Word32(42)));
m.Store(m.Word32(0x123404), r1);
m.Return();
RunFileTest(m, "Analysis/DfaUnsignedDiv.txt");
}
public static void MemStore(ProcedureBuilder m)
{
m.Store(m.Word32(0x3120), 0);
m.Store(m.Word32(0x3120), m.IAdd(m.LoadDw(m.Word32(0x3120)), 1));
m.Return();
}
