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| author | Niels Möller <nisse@lysator.liu.se> | 2020-11-25 15:38:47 +0100 |
|---|---|---|
| committer | Niels Möller <nisse@lysator.liu.se> | 2020-11-25 15:38:47 +0100 |
| commit | 3e2e2b15ba43d6c2cb7e7a7b1db663be727b1071 (patch) | |
| tree | 3159cfb11bc24ffab9eb2079bd0a417ad206092f | |
| parent | 87ecdf43c145b76583a3201ccfa1cfa9b93d68d4 (diff) | |
| download | nettle-ppc-chacha-2core.tar.gz | |
ppc: Support big-endian for _chacha_2core.ppc-chacha-2core
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | powerpc64/p7/chacha-2core.asm | 17 |
2 files changed, 22 insertions, 0 deletions
@@ -1,3 +1,8 @@ +2020-11-25 Niels Möller <nisse@lysator.liu.se> + + * powerpc64/p7/chacha-2core.asm: Add byte swapping of output, for + big-endian builds. + 2020-11-24 Niels Möller <nisse@lysator.liu.se> Enable ppc chacha_2core in fat builds. diff --git a/powerpc64/p7/chacha-2core.asm b/powerpc64/p7/chacha-2core.asm index 725d72af..265918b6 100644 --- a/powerpc64/p7/chacha-2core.asm +++ b/powerpc64/p7/chacha-2core.asm @@ -212,6 +212,23 @@ C Y3 A15 B15 A13 B13 X3 A12 B12 A14 B14 (Y3 swapped) vadduwm X2, X2, S3 vadduwm Y3, Y3, S3p1 +IF_BE(` + C Output always stored in little-endian byte order. + C Can reuse S0 and S1 to construct permutation mask mask. + li r9, 0 + lvsl S0, r9, r9 C 00 01 02 03 ... 0c 0d 0e 0f + vspltisb S1, 0x03 C 03 03 03 03 ... 03 03 03 03 + vxor S1, S1, S0 C 03 02 01 00 ... 0f 0e 0d 0c + + vperm T0, T0, T0, S1 + vperm X0, X0, X0, S1 + vperm X1, X1, X1, S1 + vperm X2, X2, X2, S1 + vperm Y0, Y0, Y0, S1 + vperm Y1, Y1, Y1, S1 + vperm Y2, Y2, Y2, S1 + vperm Y3, Y3, Y3, S1 +') stxvw4x VSR(T0), 0, DST stxvw4x VSR(X0), r6, DST stxvw4x VSR(X1), r7, DST |