mirror of
https://github.com/tillitis/tillitis-key1.git
synced 2025-04-25 01:19:20 -04:00
16a9e8c367
This is an import of the fw-2 tag of tkey-libs. We import the entire tkey-libs repo minus dot files into the tillitis-key1 repo to make it very simple not to make mistakes regarding which firmware tag depends on which tkey-libs tag, especially considering locking down with NVCM. Please see README for information about developing with another tkey-libs or how to import future tkey-libs. Since tkey-libs is now a part of the repo we also add tkey-libs to the clean_fw target.
102 lines
1.8 KiB
C
102 lines
1.8 KiB
C
// SPDX-FileCopyrightText: 2022 Tillitis AB <tillitis.se>
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// SPDX-License-Identifier: BSD-2-Clause
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#include <stdint.h>
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#include <tkey/assert.h>
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#include <tkey/lib.h>
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#include <tkey/tk1_mem.h>
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void *memset(void *dest, int c, unsigned n)
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{
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uint8_t *s = dest;
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for (; n; n--, s++)
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*s = c;
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return dest;
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}
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__attribute__((used)) void *memcpy(void *dest, const void *src, unsigned n)
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{
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uint8_t *src_byte = (uint8_t *)src;
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uint8_t *dest_byte = (uint8_t *)dest;
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for (int i = 0; i < n; i++) {
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dest_byte[i] = src_byte[i];
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}
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return dest;
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}
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void memcpy_s(void *dest, size_t destsize, const void *src, size_t n)
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{
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assert(dest != NULL);
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assert(src != NULL);
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assert(destsize >= n);
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uint8_t *src_byte = (uint8_t *)src;
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uint8_t *dest_byte = (uint8_t *)dest;
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for (size_t i = 0; i < n; i++) {
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dest_byte[i] = src_byte[i];
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}
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}
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__attribute__((used)) void *wordcpy(void *dest, const void *src, unsigned n)
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{
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uint32_t *src_word = (uint32_t *)src;
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uint32_t *dest_word = (uint32_t *)dest;
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for (int i = 0; i < n; i++) {
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dest_word[i] = src_word[i];
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}
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return dest;
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}
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void wordcpy_s(void *dest, size_t destsize, const void *src, size_t n)
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{
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assert(dest != NULL);
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assert(src != NULL);
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assert(destsize >= n);
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uint32_t *src_word = (uint32_t *)src;
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uint32_t *dest_word = (uint32_t *)dest;
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for (size_t i = 0; i < n; i++) {
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dest_word[i] = src_word[i];
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}
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}
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int memeq(void *dest, const void *src, size_t n)
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{
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uint8_t *src_byte = (uint8_t *)src;
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uint8_t *dest_byte = (uint8_t *)dest;
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int res = -1;
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for (size_t i = 0; i < n; i++) {
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if (dest_byte[i] != src_byte[i]) {
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res = 0;
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}
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}
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return res;
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}
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void secure_wipe(void *v, size_t n)
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{
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volatile uint8_t *p = (volatile uint8_t *)v;
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while (n--)
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*p++ = 0;
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}
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size_t strlen(const char *str)
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{
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const char *s;
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for (s = str; *s; ++s)
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;
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return (s - str);
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}
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