public Program ParseLoadCommands(mach_header_64 hdr, Address addrLoad)
{
var imageMap = new SegmentMap(addrLoad);
Debug.Print("Parsing {0} load commands.", hdr.ncmds);
for (uint i = 0; i < hdr.ncmds; ++i)
{
var pos = rdr.Offset;
if (!rdr.TryReadUInt32(out uint cmd) ||
!rdr.TryReadUInt32(out uint cmdsize))
{
throw new BadImageFormatException(string.Format(
"Unable to read Mach-O command ({0:X}).",
rdr.Offset));
}
Debug.Print("{0,2}: Read MachO load command 0x{1:X} {2} of size {3}.", i, cmd, (Command)cmd, cmdsize);
switch ((Command)(cmd & ~(uint)LC_REQ_DYLD))
{
case LC_SEGMENT:
ParseSegmentCommand32(imageMap);
break;
case LC_SEGMENT_64:
ParseSegmentCommand64(imageMap);
break;
case LC_SYMTAB:
ParseSymtabCommand();
break;
case LC_DYSYMTAB:
ParseDysymtabCommand();
break;
case LC_FUNCTION_STARTS:
ParseFunctionStarts(rdr.Clone());
break;
case LC_UNIXTHREAD:
ParseUnixThread(hdr.cputype);
break;
}
rdr.Offset = pos + cmdsize;
}
ldr.program.Architecture = specific.Architecture;
ldr.program.SegmentMap = imageMap;
ldr.program.Platform = new DefaultPlatform(ldr.Services, specific.Architecture);
return(ldr.program);
}
public Program ParseLoadCommands(mach_header_64 hdr, IProcessorArchitecture arch, Address addrLoad)
{
var imageMap = new SegmentMap(addrLoad);
Debug.Print("Parsing {0} load commands.", hdr.ncmds);
string?platformName = null;
for (uint i = 0; i < hdr.ncmds; ++i)
{
var pos = rdr.Offset;
if (!rdr.TryReadUInt32(out uint cmd) ||
!rdr.TryReadUInt32(out uint cmdsize))
{
throw new BadImageFormatException(string.Format(
"Unable to read Mach-O command ({0:X}).",
rdr.Offset));
}
Debug.Print("{0,2}: Read MachO load command 0x{1:X} {2} of size {3}.", i, cmd, (Command)cmd, cmdsize);
switch ((Command)(cmd & ~(uint)LC_REQ_DYLD))
{
case LC_SEGMENT:
ParseSegmentCommand32(imageMap);
break;
case LC_SEGMENT_64:
ParseSegmentCommand64(imageMap);
break;
case LC_SYMTAB:
ParseSymtabCommand(arch);
break;
case LC_DYSYMTAB:
ParseDysymtabCommand(arch);
break;
case LC_FUNCTION_STARTS:
ParseFunctionStarts(rdr.Clone());
break;
case LC_UNIXTHREAD:
ParseUnixThread(hdr.cputype, arch);
break;
case LC_VERSION_MIN_MACOSX:
platformName = "macOsX";
break;
case LC_MAIN & ~LC_REQ_DYLD:
ParseMain(arch);
break;
}
rdr.Offset = pos + cmdsize;
}
ldr.program !.Architecture = arch;
ldr.program.SegmentMap = imageMap;
if (!string.IsNullOrEmpty(platformName))
{
var env = cfgSvc.GetEnvironment(platformName !);
ldr.program.Platform = env.Load(ldr.Services, arch);
}
else
{
ldr.program.Platform = new DefaultPlatform(ldr.Services, arch);
}
return(ldr.program);
}
