diff options
Diffstat (limited to 'lib/raid6/mktables.c')
| -rw-r--r-- | lib/raid6/mktables.c | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/lib/raid6/mktables.c b/lib/raid6/mktables.c index 39787db588b0..3be03793237c 100644 --- a/lib/raid6/mktables.c +++ b/lib/raid6/mktables.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* -*- linux-c -*- ------------------------------------------------------- * * * Copyright 2002-2007 H. Peter Anvin - All Rights Reserved * - * This file is part of the Linux kernel, and is made available under - * the terms of the GNU General Public License version 2 or (at your - * option) any later version; incorporated herein by reference. - * * ----------------------------------------------------------------------- */ /* @@ -59,8 +56,10 @@ int main(int argc, char *argv[]) uint8_t v; uint8_t exptbl[256], invtbl[256]; - printf("#include <linux/raid/pq.h>\n"); + printf("#ifdef __KERNEL__\n"); printf("#include <linux/export.h>\n"); + printf("#endif\n"); + printf("#include <linux/raid/pq.h>\n"); /* Compute multiplication table */ printf("\nconst u8 __attribute__((aligned(256)))\n" @@ -125,6 +124,26 @@ int main(int argc, char *argv[]) printf("EXPORT_SYMBOL(raid6_gfexp);\n"); printf("#endif\n"); + /* Compute log-of-2 table */ + printf("\nconst u8 __attribute__((aligned(256)))\n" + "raid6_gflog[256] =\n" "{\n"); + for (i = 0; i < 256; i += 8) { + printf("\t"); + for (j = 0; j < 8; j++) { + v = 255; + for (k = 0; k < 256; k++) + if (exptbl[k] == (i + j)) { + v = k; + break; + } + printf("0x%02x,%c", v, (j == 7) ? '\n' : ' '); + } + } + printf("};\n"); + printf("#ifdef __KERNEL__\n"); + printf("EXPORT_SYMBOL(raid6_gflog);\n"); + printf("#endif\n"); + /* Compute inverse table x^-1 == x^254 */ printf("\nconst u8 __attribute__((aligned(256)))\n" "raid6_gfinv[256] =\n" "{\n"); |