981 /// @brief Identify the magic in magic.
982 file_magic identify_magic(StringRef Magic) {  in identify_magic()  argument
983   if (Magic.size() < 4)  in identify_magic()
985   switch ((unsigned char)Magic[0]) {  in identify_magic()
988       if (Magic[1] == (char)0x00 && Magic[2] == (char)0xff &&  in identify_magic()
989           Magic[3] == (char)0xff) {  in identify_magic()
991         if (Magic.size() < MinSize)  in identify_magic()
995             Magic.data() + offsetof(COFF::BigObjHeader, Version));  in identify_magic()
999         const char *Start = Magic.data() + offsetof(COFF::BigObjHeader, UUID);  in identify_magic()
1006       if (Magic.size() >= sizeof(Expected) &&  in identify_magic()
1007           memcmp(Magic.data(), Expected, sizeof(Expected)) == 0)  in identify_magic()
1010       if (Magic[1] == 0)  in identify_magic()
1015       if (Magic[1] == (char)0xC0 && Magic[2] == (char)0x17 &&  in identify_magic()
1016           Magic[3] == (char)0x0B)  in identify_magic()
1020       if (Magic[1] == 'C' && Magic[2] == (char)0xC0 && Magic[3] == (char)0xDE)  in identify_magic()
1024       if (Magic.size() >= 8)  in identify_magic()
1025         if (memcmp(Magic.data(), "!<arch>\n", 8) == 0 ||  in identify_magic()
1026             memcmp(Magic.data(), "!<thin>\n", 8) == 0)  in identify_magic()
1031       if (Magic.size() >= 18 && Magic[1] == 'E' && Magic[2] == 'L' &&  in identify_magic()
1032           Magic[3] == 'F') {  in identify_magic()
1033         bool Data2MSB = Magic[5] == 2;  in identify_magic()
1036         if (Magic[high] == 0)  in identify_magic()
1037           switch (Magic[low]) {  in identify_magic()
1051       if (Magic[1] == char(0xFE) && Magic[2] == char(0xBA) &&  in identify_magic()
1052           (Magic[3] == char(0xBE) || Magic[3] == char(0xBF))) {  in identify_magic()
1054         // See the Mach-O section in /usr/share/file/magic for details.  in identify_magic()
1055         if (Magic.size() >= 8 && Magic[7] < 43)  in identify_magic()
1060       // The two magic numbers for mach-o are:  in identify_magic()
1067       if (Magic[0] == char(0xFE) && Magic[1] == char(0xED) &&  in identify_magic()
1068           Magic[2] == char(0xFA) &&  in identify_magic()
1069           (Magic[3] == char(0xCE) || Magic[3] == char(0xCF))) {  in identify_magic()
1072         if (Magic[3] == char(0xCE))  in identify_magic()
1076         if (Magic.size() >= MinSize)  in identify_magic()
1077           type = Magic[12] << 24 | Magic[13] << 12 | Magic[14] << 8 | Magic[15];  in identify_magic()
1078       } else if ((Magic[0] == char(0xCE) || Magic[0] == char(0xCF)) &&  in identify_magic()
1079                  Magic[1] == char(0xFA) && Magic[2] == char(0xED) &&  in identify_magic()
1080                  Magic[3] == char(0xFE)) {  in identify_magic()
1083         if (Magic[0] == char(0xCE))  in identify_magic()
1087         if (Magic.size() >= MinSize)  in identify_magic()
1088           type = Magic[15] << 24 | Magic[14] << 12 |Magic[13] << 8 | Magic[12];  in identify_magic()
1113       if (Magic[1] == 0x01)  in identify_magic()
1118       if (Magic[1] == 0x02)  in identify_magic()
1123       if (Magic[1] == 'Z') {  in identify_magic()
1124         uint32_t off = read32le(Magic.data() + 0x3c);  in identify_magic()
1126         if (off < Magic.size() &&  in identify_magic()
1127             memcmp(Magic.data()+off, COFF::PEMagic, sizeof(COFF::PEMagic)) == 0)  in identify_magic()
1133       if (Magic[1] == char(0x86))  in identify_magic()