protected override void RunTest(Program program, TextWriter writer)
{
var importResolver = MockRepository.GenerateStub<IImportResolver>();
importResolver.Replay();
var dfa = new DataFlowAnalysis(program, importResolver, new FakeDecompilerEventListener());
dfa.UntangleProcedures();
foreach (Procedure proc in program.Procedures.Values)
{
Aliases alias = new Aliases(proc, program.Architecture);
alias.Transform();
SsaTransform sst = new SsaTransform(
dfa.ProgramDataFlow,
proc,
importResolver,
proc.CreateBlockDominatorGraph(),
new HashSet<RegisterStorage>());
SsaState ssa = sst.SsaState;
GrfDefinitionFinder grfd = new GrfDefinitionFinder(ssa.Identifiers);
foreach (SsaIdentifier sid in ssa.Identifiers)
{
var id = sid.OriginalIdentifier as Identifier;
if (id == null || !(id.Storage is FlagGroupStorage) || sid.Uses.Count == 0)
continue;
writer.Write("{0}: ", sid.DefStatement.Instruction);
grfd.FindDefiningExpression(sid);
string fmt = grfd.IsNegated ? "!{0};" : "{0}";
writer.WriteLine(fmt, grfd.DefiningExpression);
}
}
}
public Expression UseGrfConditionally(SsaIdentifier sid, ConditionCode cc)
{
GrfDefinitionFinder gf = new GrfDefinitionFinder(ssaIds);
gf.FindDefiningExpression(sid);
Expression e = gf.DefiningExpression;
if (e == null)
{
return(sid.Identifier);
}
BinaryExpression binDef = e as BinaryExpression;
if (binDef != null)
{
if (gf.IsNegated)
{
e = e.Invert();
}
return(e);
}
ConditionOf cof = e as ConditionOf;
if (cof != null)
{
binDef = cof.Expression as BinaryExpression;
if (binDef == null)
{
binDef = CmpExpressionToZero(cof.Expression);
}
return(ComparisonFromConditionCode(cc, binDef, gf.IsNegated));
}
Application app = e as Application;
if (app != null)
{
return(sid.Identifier);
}
PhiFunction phi = e as PhiFunction;
if (phi != null)
{
return(sid.Identifier);
}
throw new NotImplementedException("NYI: e: " + e.ToString());
}
public Expression UseGrfConditionally(SsaIdentifier sid, ConditionCode cc)
{
var gf = new GrfDefinitionFinder(ssaIds);
gf.FindDefiningExpression(sid);
Expression e = gf.DefiningExpression;
if (e == null)
{
return(sid.Identifier);
}
switch (e)
{
case BinaryExpression binDef:
if (gf.IsNegated)
{
e = e.Invert();
}
return(e);
case ConditionOf cof:
var condBinDef = cof.Expression as BinaryExpression;
if (condBinDef == null)
{
condBinDef = CmpExpressionToZero(cof.Expression);
}
return(ComparisonFromConditionCode(cc, condBinDef, gf.IsNegated));
case Application app:
return(sid.Identifier);
case PhiFunction phi:
return(sid.Identifier);
default:
throw new NotImplementedException("NYI: e: " + e.ToString());
}
}
public Expression UseGrfConditionally(SsaIdentifier sid, ConditionCode cc)
{
GrfDefinitionFinder gf = new GrfDefinitionFinder(ssaIds);
gf.FindDefiningExpression(sid);
Expression e = gf.DefiningExpression;
if (e == null)
{
return sid.Identifier;
}
BinaryExpression binDef = e as BinaryExpression;
if (binDef != null)
{
if (gf.IsNegated)
e = new UnaryExpression(Operator.Not, PrimitiveType.Bool, e);
return e;
}
ConditionOf cof = e as ConditionOf;
if (cof != null)
{
binDef = cof.Expression as BinaryExpression;
if (binDef == null)
binDef = CmpExpressionToZero(cof.Expression);
return ComparisonFromConditionCode(cc, binDef, gf.IsNegated);
}
Application app = e as Application;
if (app != null)
{
return sid.Identifier;
}
PhiFunction phi = e as PhiFunction;
if (phi != null)
{
return sid.Identifier;
}
throw new NotImplementedException("NYI: e: " + e.ToString());
}