public void ApplyRelocation(uint baseOfImage, uint page, ImageReader rdr, RelocationDictionary relocations)
{
ushort fixup = rdr.ReadLeUInt16();
switch (fixup >> 12)
{
case RelocationAbsolute:
// Used for padding to 4-byte boundary, ignore.
break;
case RelocationHighLow:
{
uint offset = page + (fixup & 0x0FFFu);
uint n = (uint)(imgLoaded.ReadLeUInt32(offset) + (baseOfImage - preferredBaseOfImage.ToLinear()));
imgLoaded.WriteLeUInt32(offset, n);
relocations.AddPointerReference(offset, n);
break;
}
case 0xA:
break;
default:
throw new NotImplementedException(string.Format("Fixup type: {0:X}", fixup >> 12));
}
}
public override void ApplyRelocation(Address baseOfImage, uint page, EndianImageReader rdr, RelocationDictionary relocations)
{
ushort fixup = rdr.ReadLeUInt16();
Address offset = baseOfImage + page + (fixup & 0x0FFFu);
var arch = program.Architecture;
var imgR = program.CreateImageReader(arch, offset);
var imgW = program.CreateImageWriter(arch, offset);
switch (fixup >> 12)
{
case RelocationAbsolute:
// Used for padding to 4-byte boundary, ignore.
break;
case RelocationHighLow:
{
uint n = (uint)(imgR.ReadUInt32() + (baseOfImage - program.ImageMap.BaseAddress));
imgW.WriteUInt32(n);
relocations.AddPointerReference(offset.ToLinear(), n);
break;
}
case 0xA:
break;
default:
dcSvc.Warn(
dcSvc.CreateAddressNavigator(program, offset),
string.Format(
"Unsupported i386 PE fixup type: {0:X}",
fixup >> 12));
break;
}
}
public void AddressNotInDictionary()
{
RelocationDictionary rd = new RelocationDictionary();
rd.AddPointerReference(0x020, 0x12312312);
Assert.IsNull(rd[0x3243232]);
Assert.IsFalse(rd.Contains(0x2341231));
}
public void AddPointerRelocation()
{
RelocationDictionary rd = new RelocationDictionary();
rd.AddPointerReference(0x100400, 0x100500);
Assert.AreEqual(1, rd.Count);
Constant c = rd[0x0100400];
Assert.AreEqual("ptr32", c.DataType.ToString());
}
public void Reld_Overlaps()
{
var rd = new RelocationDictionary();
rd.AddPointerReference(0x2000, 0x12312312);
Assert.IsFalse(rd.Overlaps(Address.Ptr32(0x1FFC), 4));
Assert.IsFalse(rd.Overlaps(Address.Ptr32(0x2004), 1));
Assert.IsTrue(rd.Overlaps(Address.Ptr32(0x2003), 1));
Assert.IsTrue(rd.Overlaps(Address.Ptr32(0x1FFC), 5));
Assert.IsFalse(rd.Overlaps(Address.Ptr32(0x1FFF), 5));
Assert.IsFalse(rd.Overlaps(Address.Ptr32(0x2000), 4));
Assert.IsFalse(rd.Overlaps(Address.Ptr32(0x2000), 8));
Assert.IsFalse(rd.Overlaps(Address.Ptr32(0x1FFC), 8));
}
public void Shsc_Relocation_CrossesInstruction()
{
Given_x86_Image(
0x01, 0x02, 0xC3, 0x04, 0x4);
rd.AddPointerReference(0x10001, 0x11000000);
Given_Scanner();
var seg = program.SegmentMap.Segments.Values.First();
var scseg = this.sh.ScanRange(seg.MemoryArea, seg.Address, seg.Size, 0);
Assert.AreEqual(new byte[]
{
0, 0, 0, 0, 0
},
scseg);
}
public void ApplyRelocation(uint baseOfImage, uint page, ImageReader rdr, RelocationDictionary relocations)
{
ushort fixup = rdr.ReadLeUInt16();
uint offset = page + (fixup & 0x0FFFu);
switch (fixup >> 12)
{
case RelocationAbsolute:
// Used for padding to 4-byte boundary, ignore.
break;
case RelocationHighLow:
{
uint n = (uint) (imgLoaded.ReadLeUInt32(offset) + (baseOfImage - preferredBaseOfImage.ToLinear()));
imgLoaded.WriteLeUInt32(offset, n);
relocations.AddPointerReference(offset, n);
break;
}
case 0xA:
break;
default:
var dcSvc = Services.RequireService<DecompilerEventListener>();
dcSvc.Warn(
dcSvc.CreateAddressNavigator(program, Address.Ptr32(offset)),
string.Format(
"Unsupported PE fixup type: {0:X}",
fixup >> 12));
break;
}
#if I386
//
// I386 relocation types.
//
const static final ushort IMAGE_REL_I386_ABSOLUTE = 0x0000; // Reference is absolute, no relocation is necessary
const static final ushort IMAGE_REL_I386_DIR16 = 0x0001; // Direct 16-bit reference to the symbols virtual address
const static final ushort IMAGE_REL_I386_REL16 = 0x0002; // PC-relative 16-bit reference to the symbols virtual address
const static final ushort IMAGE_REL_I386_DIR32 = 0x0006; // Direct 32-bit reference to the symbols virtual address
const static final ushort IMAGE_REL_I386_DIR32NB = 0x0007; // Direct 32-bit reference to the symbols virtual address, base not included
const static final ushort IMAGE_REL_I386_SEG12 = 0x0009; // Direct 16-bit reference to the segment-selector bits of a 32-bit virtual address
const static final ushort IMAGE_REL_I386_SECTION = 0x000A;
const static final ushort IMAGE_REL_I386_SECREL = 0x000B;
const static final ushort IMAGE_REL_I386_TOKEN = 0x000C; // clr token
const static final ushort IMAGE_REL_I386_SECREL7 = 0x000D; // 7 bit offset from base of section containing target
const static final ushort IMAGE_REL_I386_REL32 = 0x0014; // PC-relative 32-bit reference to the symbols virtual address