static QList<Abi> parseCoffHeader(const QByteArray &data)
{
QList<Abi> result;
if (data.size() < 20)
return result;
Abi::Architecture arch = Abi::UnknownArchitecture;
Abi::OSFlavor flavor = Abi::UnknownFlavor;
int width = 0;
// Get machine field from COFF file header
quint16 machine = getLEUint16(data, 0);
switch (machine) {
case 0x8664: // x86_64
arch = Abi::X86Architecture;
width = 64;
break;
case 0x014c: // i386
arch = Abi::X86Architecture;
width = 32;
break;
case 0x0166: // MIPS, little endian
arch = Abi::MipsArchitecture;
width = 32;
break;
case 0x0200: // ia64
arch = Abi::ItaniumArchitecture;
width = 64;
break;
}
if (data.size() >= 68) {
// Get Major and Minor Image Version from optional header fields
quint32 image = getLEUint32(data, 64);
if (image == 1) { // Image is 1 for mingw and higher for MSVC (4.something in some encoding)
flavor = Abi::WindowsMSysFlavor;
} else {
switch (data.at(22)) {
case 8:
flavor = Abi::WindowsMsvc2005Flavor;
break;
case 9:
flavor = Abi::WindowsMsvc2008Flavor;
break;
case 10:
flavor = Abi::WindowsMsvc2010Flavor;
break;
default:
// Keep unknown flavor
break;
}
}
}
if (arch != Abi::UnknownArchitecture && width != 0)
result.append(Abi(arch, Abi::WindowsOS, flavor, Abi::PEFormat, width));
return result;
}
static QList<Abi> abiOf(const QByteArray &data)
{
QList<Abi> result;
if (data.size() <= 8)
return result;
if (data.size() >= 20
&& getUint8(data, 0) == 0x7f && getUint8(data, 1) == 'E' && getUint8(data, 2) == 'L'
&& getUint8(data, 3) == 'F') {
// ELF format:
bool isLE = (getUint8(data, 5) == 1);
quint16 machine = isLE ? getLEUint16(data, 18) : getBEUint16(data, 18);
quint8 osAbi = getUint8(data, 7);
Abi::OS os = Abi::UnixOS;
Abi::OSFlavor flavor = Abi::GenericUnixFlavor;
// http://www.sco.com/developers/gabi/latest/ch4.eheader.html#elfid
switch (osAbi) {
case 2: // NetBSD:
os = Abi::BsdOS;
flavor = Abi::NetBsdFlavor;
break;
case 3: // Linux:
case 0: // no extra info available: Default to Linux:
case 97: // ARM, also linux most of the time.
os = Abi::LinuxOS;
flavor = Abi::GenericLinuxFlavor;
break;
case 6: // Solaris:
os = Abi::UnixOS;
flavor = Abi::SolarisUnixFlavor;
break;
case 9: // FreeBSD:
os = Abi::BsdOS;
flavor = Abi::FreeBsdFlavor;
break;
case 12: // OpenBSD:
os = Abi::BsdOS;
flavor = Abi::OpenBsdFlavor;
}
switch (machine) {
case 3: // EM_386
result.append(Abi(Abi::X86Architecture, os, flavor, Abi::ElfFormat, 32));
break;
case 8: // EM_MIPS
result.append(Abi(Abi::MipsArchitecture, os, flavor, Abi::ElfFormat, 32));
break;
case 20: // EM_PPC
result.append(Abi(Abi::PowerPCArchitecture, os, flavor, Abi::ElfFormat, 32));
break;
case 21: // EM_PPC64
result.append(Abi(Abi::PowerPCArchitecture, os, flavor, Abi::ElfFormat, 64));
break;
case 40: // EM_ARM
result.append(Abi(Abi::ArmArchitecture, os, flavor, Abi::ElfFormat, 32));
break;
case 62: // EM_X86_64
result.append(Abi(Abi::X86Architecture, os, flavor, Abi::ElfFormat, 64));
break;
case 42: // EM_SH
result.append(Abi(Abi::ShArchitecture, os, flavor, Abi::ElfFormat, 32));
break;
case 50: // EM_IA_64
result.append(Abi(Abi::ItaniumArchitecture, os, flavor, Abi::ElfFormat, 64));
break;
default:
;
}
} else if (((getUint8(data, 0) == 0xce || getUint8(data, 0) == 0xcf)
&& getUint8(data, 1) == 0xfa && getUint8(data, 2) == 0xed && getUint8(data, 3) == 0xfe
)
||
(getUint8(data, 0) == 0xfe && getUint8(data, 1) == 0xed && getUint8(data, 2) == 0xfa
&& (getUint8(data, 3) == 0xce || getUint8(data, 3) == 0xcf)
)
) {
// Mach-O format (Mac non-fat binary, 32 and 64bit magic):
quint32 type = (getUint8(data, 1) == 0xfa) ? getLEUint32(data, 4) : getBEUint32(data, 4);
result.append(macAbiForCpu(type));
} else if ((getUint8(data, 0) == 0xbe && getUint8(data, 1) == 0xba
&& getUint8(data, 2) == 0xfe && getUint8(data, 3) == 0xca)
||
(getUint8(data, 0) == 0xca && getUint8(data, 1) == 0xfe
&& getUint8(data, 2) == 0xba && getUint8(data, 3) == 0xbe)
) {
// Mach-0 format Fat binary header:
bool isLE = (getUint8(data, 0) == 0xbe);
quint32 count = isLE ? getLEUint32(data, 4) : getBEUint32(data, 4);
int pos = 8;
for (quint32 i = 0; i < count; ++i) {
if (data.size() <= pos + 4)
break;
quint32 type = isLE ? getLEUint32(data, pos) : getBEUint32(data, pos);
result.append(macAbiForCpu(type));
pos += 20;
}
} else if (data.size() >= 64){
// Windows PE: values are LE (except for a few exceptions which we will not use here).
// MZ header first (ZM is also allowed, but rarely used)
const quint8 firstChar = getUint8(data, 0);
const quint8 secondChar = getUint8(data, 1);
if ((firstChar != 'M' || secondChar != 'Z') && (firstChar != 'Z' || secondChar != 'M'))
return result;
// Get PE/COFF header position from MZ header:
qint32 pePos = getLEUint32(data, 60);
if (pePos <= 0 || data.size() < pePos + 4 + 20) // PE magic bytes plus COFF header
return result;
if (getUint8(data, pePos) == 'P' && getUint8(data, pePos + 1) == 'E'
&& getUint8(data, pePos + 2) == 0 && getUint8(data, pePos + 3) == 0)
result = parseCoffHeader(data.mid(pePos + 4));
}
return result;
}
