internal MachInfo Parse(IIntegerReader s)
{
var magic = s.ReadUInt32();
MachHeaderType type;
if (magic == MH_MAGIC)
{
type = MachHeaderType.Mach32;
}
else if (magic == MH_MAGIC_64)
{
type = MachHeaderType.Mach64;
}
else
{
return(null);
}
var cpu = s.ReadInt32();
var subtype = s.ReadInt32(); //machine specifier
var filetype = s.ReadUInt32();
s.ReadUInt32(); //# of load cmds
s.ReadUInt32(); //size of load cms
var flags = s.ReadUInt32(); //flags
return(new MachInfo(type, cpu, subtype, (MachFileType)filetype));
}
MachInfo ParseSingleArch(IIntegerReader s)
{
//CPU specifier
var cpu = s.ReadInt32();
//CPU subtype
var subtype = s.ReadInt32();
//offset, size, and alignment of obj. file
s.ReadUInt32(); s.ReadUInt32(); s.ReadUInt32();
return(new MachInfo(MachHeaderType.MachMulti, cpu, subtype, null));
}
/// <summary>
/// Returns null if this is not a Fat binary, or if the endianess is wrong.
/// May return an empty list if the file is invalid, such that the supported architecture count is 0
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
internal IEnumerable <MachInfo> Parse(IIntegerReader s)
{
//Magic byte
if (s.ReadUInt32() != FAT_MAGIC)
{
return(null);
}
//architecture count
var count = s.ReadUInt32();
var list = new List <MachInfo>((int)count);
for (var i = 0; i < count; i++)
{
list.Add(ParseSingleArch(s));
}
return(list);
}
