--- /dev/null
+C Used as temporaries by the AES macros
+define(<TMP1>, <%g1>)
+define(<TMP2>, <%g2>)
+define(<TMP3>, <%g3>)
+
+C Loop invariants used by AES_ROUND
+define(<T0>, <%o0>)
+define(<T1>, <%o1>)
+define(<T2>, <%o2>)
+define(<T3>, <%o3>)
+
+C AES_LOAD(i, src, key, res)
+define(<AES_LOAD>, <
+ ldub [$2 + 4*$1], $4
+ ldub [$2 + 4*$1 + 1], TMP1
+ ldub [$2 + 4*$1 + 2], TMP2
+ sll TMP1, 8, TMP1
+
+ or $4, TMP1, $4
+ ldub [$2 + 4*$1+3], TMP1
+ sll TMP2, 16, TMP2
+ or $4, TMP2, $4
+
+ sll TMP1, 24, TMP1
+ C Get subkey
+ ld [$3 + 4*$1], TMP2
+ or $4, TMP1, $4
+ xor $4, TMP2, $4>)dnl
+
+C AES_ROUND(i, a, b, c, d, key, res)
+C Computes one word of the AES round
+C FIXME: Could use registers pointing directly to the four tables
+C FIXME: Needs better instruction scheduling, and perhaps more temporaries
+C Alternatively, we can use a single table and some rotations
+define(<AES_ROUND>, <
+ and $2, 0xff, TMP1 C 0
+ srl $3, 6, TMP2 C 1
+ sll TMP1, 2, TMP1 C 0
+ and TMP2, 0x3fc, TMP2 C 1
+ ld [T0 + TMP1], $7 C 0 E0
+ srl $4, 14, TMP1 C 2
+ ld [T1 + TMP2], TMP2 C 1
+ and TMP1, 0x3fc, TMP1 C 2
+ xor $7, TMP2, $7 C 1 E1
+ srl $5, 22, TMP2 C 3
+ ld [T2 + TMP1], TMP1 C 2
+ and TMP2, 0x3fc, TMP2 C 3
+ xor $7, TMP1, $7 C 2 E2
+ ld [$6 + 4*$1], TMP1 C 4
+ ld [T3 + TMP2], TMP2 C 3
+ xor $7, TMP1, $7 C 4 E4
+ xor $7, TMP2, $7 C 3 E3
+>)dnl
+
+C AES_FINAL_ROUND(i, T, a, b, c, d, key, dst)
+C Compute one word in the final round function. Output is converted to
+C octets and stored at dst. Relies on AES_SBOX being zero.
+define(<AES_FINAL_ROUND>, <
+ C Load subkey
+ ld [$7 + 4*$1], TMP3
+
+ and $3, 0xff, TMP1 C 0
+ srl $4, 8, TMP2 C 1
+ ldub [T + TMP1], TMP1 C 0
+ and TMP2, 0xff, TMP2 C 1
+ xor TMP3, TMP1, TMP1 C 0
+ ldub [T + TMP2], TMP2 C 1
+ stb TMP1, [$8 + 4*$1] C 0 E0
+ srl $5, 16, TMP1 C 2
+ srl TMP3, 8, TMP3 C 1
+ and TMP1, 0xff, TMP1 C 2
+ xor TMP3, TMP2, TMP2 C 1
+ ldub [T + TMP1], TMP1 C 2
+ stb TMP2, [$8 + 4*$1 + 1] C 1 E1
+ srl $6, 24, TMP2 C 3
+ srl TMP3, 8, TMP3 C 2
+ ldub [T + TMP2], TMP2 C 3
+ xor TMP3, TMP1, TMP1 C 2
+ srl TMP3, 8, TMP3 C 3
+ stb TMP1, [$8 + 4*$1 + 2] C 2 E2
+ xor TMP3, TMP2, TMP2 C 3
+ stb TMP2, [$8 + 4*$1 + 3] C 3 E3
+>)
-C Used as temporaries by the AES macros
-define(<TMP1>, <%g1>)
-define(<TMP2>, <%g2>)
-define(<TMP3>, <%g3>)
-
-C Loop invariants used by AES_ROUND
-define(<T0>, <%o0>)
-define(<T1>, <%o1>)
-define(<T2>, <%o2>)
-define(<T3>, <%o3>)
-
-C AES_LOAD(i, src, key, res)
-define(<AES_LOAD>, <
- ldub [$2 + 4*$1], $4
- ldub [$2 + 4*$1 + 1], TMP1
- ldub [$2 + 4*$1 + 2], TMP2
- sll TMP1, 8, TMP1
-
- or $4, TMP1, $4
- ldub [$2 + 4*$1+3], TMP1
- sll TMP2, 16, TMP2
- or $4, TMP2, $4
-
- sll TMP1, 24, TMP1
- C Get subkey
- ld [$3 + 4*$1], TMP2
- or $4, TMP1, $4
- xor $4, TMP2, $4>)dnl
-
-C AES_ROUND(i, a, b, c, d, key, res)
-C Computes one word of the AES round
-C FIXME: Could use registers pointing directly to the four tables
-C FIXME: Needs better instruction scheduling, and perhaps more temporaries
-C Alternatively, we can use a single table and some rotations
-define(<AES_ROUND>, <
- and $2, 0xff, TMP1 C 0
- srl $3, 6, TMP2 C 1
- sll TMP1, 2, TMP1 C 0
- and TMP2, 0x3fc, TMP2 C 1
- ld [T0 + TMP1], $7 C 0 E0
- srl $4, 14, TMP1 C 2
- ld [T1 + TMP2], TMP2 C 1
- and TMP1, 0x3fc, TMP1 C 2
- xor $7, TMP2, $7 C 1 E1
- srl $5, 22, TMP2 C 3
- ld [T2 + TMP1], TMP1 C 2
- and TMP2, 0x3fc, TMP2 C 3
- xor $7, TMP1, $7 C 2 E2
- ld [$6 + 4*$1], TMP1 C 4
- ld [T3 + TMP2], TMP2 C 3
- xor $7, TMP1, $7 C 4 E4
- xor $7, TMP2, $7 C 3 E3
->)dnl
-
-C AES_FINAL_ROUND(i, T, a, b, c, d, key, dst)
-C Compute one word in the final round function. Output is converted to
-C octets and stored at dst. Relies on AES_SBOX being zero.
-define(<AES_FINAL_ROUND>, <
- C Load subkey
- ld [$7 + 4*$1], TMP3
-
- and $3, 0xff, TMP1 C 0
- srl $4, 8, TMP2 C 1
- ldub [T + TMP1], TMP1 C 0
- and TMP2, 0xff, TMP2 C 1
- xor TMP3, TMP1, TMP1 C 0
- ldub [T + TMP2], TMP2 C 1
- stb TMP1, [$8 + 4*$1] C 0 E0
- srl $5, 16, TMP1 C 2
- srl TMP3, 8, TMP3 C 1
- and TMP1, 0xff, TMP1 C 2
- xor TMP3, TMP2, TMP2 C 1
- ldub [T + TMP1], TMP1 C 2
- stb TMP2, [$8 + 4*$1 + 1] C 1 E1
- srl $6, 24, TMP2 C 3
- srl TMP3, 8, TMP3 C 2
- ldub [T + TMP2], TMP2 C 3
- xor TMP3, TMP1, TMP1 C 2
- srl TMP3, 8, TMP3 C 3
- stb TMP1, [$8 + 4*$1 + 2] C 2 E2
- xor TMP3, TMP2, TMP2 C 3
- stb TMP2, [$8 + 4*$1 + 3] C 3 E3
->)
-