INV V1 // The following macros are used for // the stitched implementation within // counterCryptASM. // Load the initial GCM counter value // in V30 and set up the counter increment // in V31 #define SETUP_COUNTER \ P8_LXVB16X(COUNTER, R0, V30); \ VSPLTISB $1, V28; \ VXOR V31, V31, V31; \ VSLDOI $1, V31, V28, V31 // These macros set up the initial value // for a single encryption, or 4 or 8 // stitched encryptions implemented // with interleaving vciphers. // // The input value for each encryption...