DIGEST: calculation

Signed-off-by: Ulf Samuelsson <ulf@emagii.com>

1 files changed, 99 insertions, 0 deletions

diff --git a/ld/ldreflect.c b/ld/ldreflect.c
new file mode 100644
index 00000000000..0601e2a8c1b
--- /dev/null
+++ b/ld/ldreflect.c
@@ -0,0 +1,99 @@
+/* Linker command language support.
+   Copyright (C) 1991-2023 Ulf Samuelsson <ulf@emagii.com>
+
+   This file is part of the GNU Binutils.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include "ldreflect.h"
+
+uint8_t reflect_tab[256] = {
+  0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,
+  0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
+  0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,
+  0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
+  0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,
+  0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
+  0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,
+  0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
+  0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,
+  0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
+  0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,
+  0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
+  0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,
+  0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
+  0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,
+  0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
+  0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,
+  0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
+  0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,
+  0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
+  0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,
+  0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
+  0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,
+  0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
+  0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,
+  0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
+  0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,
+  0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
+  0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,
+  0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
+  0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,
+  0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
+};
+
+uint8_t
+reflect8 (uint8_t val)
+{
+  return reflect_tab[val];
+}
+
+uint16_t
+reflect16 (uint16_t val)
+{
+  uint16_t result;
+  result = ((uint16_t) reflect_tab[(val >> 0) & 0xFF]) << 8;
+  result |= ((uint16_t) reflect_tab[(val >> 8) & 0xFF]) << 0;
+  return result;
+}
+
+uint32_t
+reflect32 (uint32_t val)
+{
+  uint32_t result;
+  result = ((uint32_t) reflect_tab[(val >> 0) & 0xFF]) << 24;
+  result |= ((uint32_t) reflect_tab[(val >> 8) & 0xFF]) << 16;
+  result |= ((uint32_t) reflect_tab[(val >> 16) & 0xFF]) << 8;
+  result |= ((uint32_t) reflect_tab[(val >> 24) & 0xFF]) << 0;
+  return result;
+}
+
+uint64_t
+reflect64 (uint64_t val)
+{
+  uint64_t result;
+  result = ((uint64_t) reflect_tab[(val >> 0) & 0xFF]) << 56;
+  result |= ((uint64_t) reflect_tab[(val >> 8) & 0xFF]) << 48;
+  result |= ((uint64_t) reflect_tab[(val >> 16) & 0xFF]) << 40;
+  result |= ((uint64_t) reflect_tab[(val >> 24) & 0xFF]) << 32;
+  result |= ((uint64_t) reflect_tab[(val >> 32) & 0xFF]) << 24;
+  result |= ((uint64_t) reflect_tab[(val >> 40) & 0xFF]) << 16;
+  result |= ((uint64_t) reflect_tab[(val >> 48) & 0xFF]) << 8;
+  result |= ((uint64_t) reflect_tab[(val >> 56) & 0xFF]) << 0;
+  return result;
+}