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Diffstat (limited to 's390x/msa_x1/sha256-compress-n.asm')
| -rw-r--r-- | s390x/msa_x1/sha256-compress-n.asm | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/s390x/msa_x1/sha256-compress-n.asm b/s390x/msa_x1/sha256-compress-n.asm new file mode 100644 index 00000000..51539927 --- /dev/null +++ b/s390x/msa_x1/sha256-compress-n.asm @@ -0,0 +1,78 @@ +C s390x/msa_x1/sha256-compress-n.asm + +ifelse(` + Copyright (C) 2021, 2022 Mamone Tarsha, Niels Möller + This file is part of GNU Nettle. + + GNU Nettle is free software: you can redistribute it and/or + modify it under the terms of either: + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at your + option) any later version. + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at your + option) any later version. + + or both in parallel, as here. + + GNU Nettle is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see http://www.gnu.org/licenses/. +') + +C KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) is specefied in +C "z/Architecture Principles of Operation SA22-7832-12" as follows: +C A function specified by the function code in general register 0 is performed. +C General register 1 contains the logical address of the leftmost byte of the parameter block in storage. +C the second operand is processed as specified by the function code using an initial chaining value in +C the parameter block, and the result replaces the chaining value. + +C This implementation uses KIMD-SHA-256 function. +C The parameter block used for the KIMD-SHA-256 function has the following format: +C *----------------------------------------------* +C | H0 (4 bytes) | +C |----------------------------------------------| +C | H1 (4 bytes) | +C |----------------------------------------------| +C | H2 (4 bytes) | +C |----------------------------------------------| +C | H3 (4 bytes) | +C |----------------------------------------------| +C | H4 (4 bytes) | +C |----------------------------------------------| +C | H5 (4 bytes) | +C |----------------------------------------------| +C | H6 (4 bytes) | +C |----------------------------------------------| +C | H7 (4 bytes) | +C *----------------------------------------------* + +.file "sha256-compress-n.asm" + +.text + +C SHA function code +define(`SHA256_FUNCTION_CODE', `2') + +C const uint8_t * +C _nettle_sha256_compress_n(uint32_t *state, const uint32_t *k, +C size_t blocks, const uint8_t *input) + +PROLOGUE(_nettle_sha256_compress_n) + lghi %r0,SHA256_FUNCTION_CODE C SHA-256 Function Code + lgr %r1,%r2 + lgr %r2, %r5 + sllg %r3, %r4, 6 C 64 * block size +1: .long 0xb93e0002 C kimd %r0,%r2. perform KIMD-SHA operation on data + brc 1,1b + br RA +EPILOGUE(_nettle_sha256_compress_n) |