61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
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/*******************************************************************************
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* Ledger Ethereum App
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* (c) 2016-2019 Ledger
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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********************************************************************************/
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// Adapted from https://github.com/calccrypto/uint256_t
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#include "uint_common.h"
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void write_u64_be(uint8_t *const buffer, uint64_t value) {
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buffer[0] = ((value >> 56) & 0xff);
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buffer[1] = ((value >> 48) & 0xff);
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buffer[2] = ((value >> 40) & 0xff);
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buffer[3] = ((value >> 32) & 0xff);
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buffer[4] = ((value >> 24) & 0xff);
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buffer[5] = ((value >> 16) & 0xff);
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buffer[6] = ((value >> 8) & 0xff);
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buffer[7] = (value & 0xff);
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}
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void read_u64_be(const uint8_t *const in, uint64_t *const out) {
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uint8_t *out_ptr = (uint8_t *) out;
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*out_ptr++ = in[7];
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*out_ptr++ = in[6];
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*out_ptr++ = in[5];
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*out_ptr++ = in[4];
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*out_ptr++ = in[3];
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*out_ptr++ = in[2];
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*out_ptr++ = in[1];
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*out_ptr = in[0];
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}
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uint64_t readUint64BE(const uint8_t *const buffer) {
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return (((uint64_t) buffer[0]) << 56) | (((uint64_t) buffer[1]) << 48) |
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(((uint64_t) buffer[2]) << 40) | (((uint64_t) buffer[3]) << 32) |
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(((uint64_t) buffer[4]) << 24) | (((uint64_t) buffer[5]) << 16) |
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(((uint64_t) buffer[6]) << 8) | (((uint64_t) buffer[7]));
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}
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void reverseString(char *const str, uint32_t length) {
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uint32_t i, j;
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for (i = 0, j = length - 1; i < j; i++, j--) {
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char c;
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c = str[i];
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str[i] = str[j];
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str[j] = c;
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}
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}
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