Commit eb819e1e authored by Niels Möller's avatar Niels Möller
Browse files

* sparc/machine.m4: Don't use m4 eval, instead rely on the

assembler's arithmetic.

Rev: src/nettle/sparc/machine.m4:1.12
parent f68a96f4
C FIXME: Do we need an OFFSET macro? Or is it fine to use expressions such as [%i1 + 0]
C FIXME: How much can we rely on the assembler to be able to
C understand arithmetic expressions? Mayby we don't need to use m4
C eval.
C Used as temporaries by the AES macros
define(<TMP1>, <%g1>)
define(<TMP2>, <%g2>)
......@@ -17,19 +11,19 @@ define(<T3>, <%o3>)
C AES_LOAD(i, src, key, res)
define(<AES_LOAD>, <
ldub [$2 + eval(4*$1)], $4
ldub [$2 + eval(4*$1 + 1)], TMP1
ldub [$2 + eval(4*$1 + 2)], TMP2
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 + eval(4*$1+3)], TMP1
ldub [$2 + 4*$1+3], TMP1
sll TMP2, 16, TMP2
or $4, TMP2, $4
sll TMP1, 24, TMP1
C Get subkey
ld [$3 + eval(4*$1)], TMP2
ld [$3 + 4*$1], TMP2
or $4, TMP1, $4
xor $4, TMP2, $4>)dnl
......@@ -52,7 +46,7 @@ define(<AES_ROUND>, <
ld [T2 + TMP1], TMP1 C 2
and TMP2, 0x3fc, TMP2 C 3
xor $7, TMP1, $7 C 2 E2
ld [$6 + eval(4*$1)], TMP1 C 4
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
......@@ -63,7 +57,7 @@ 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 + eval(4*$1)], TMP3
ld [$7 + 4*$1], TMP3
and $3, 0xff, TMP1 C 0
srl $4, 8, TMP2 C 1
......@@ -71,20 +65,20 @@ define(<AES_FINAL_ROUND>, <
and TMP2, 0xff, TMP2 C 1
xor TMP3, TMP1, TMP1 C 0
ldub [T + TMP2], TMP2 C 1
stb TMP1, [$8 + eval(4*$1)] C 0 E0
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 + eval(4*$1 + 1)] C 1 E1
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 + eval(4*$1 + 2)] C 2 E2
stb TMP1, [$8 + 4*$1 + 2] C 2 E2
xor TMP3, TMP2, TMP2 C 3
stb TMP2, [$8 + eval(4*$1 + 3)] C 3 E3
stb TMP2, [$8 + 4*$1 + 3] C 3 E3
>)
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