Research Article
Galois Field Instructions in the Sandblaster 2.0 Architectrue
Algorithm 1
Gf-op pseudocode.
| gfop (ismul, ra, rb, J) | | /*setup*/ | | if (ismul) | | res 0 00000 | | div 0 00.rb [31:24] | | N 8 | | else | | res ra [31:17] | | div rb [31:17] | | N J 1 | | /*shift/xor stages*/ | | for (i 0; I 8; i ) | | if (ismul) | | isxor ra [31 i] | | issh true | | else | | isxor res && i N | | issh i N | | if (isxor) | | res (res 1) div | | else if (issh) | | res (res 1) |
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