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/* See LICENSE file for copyright and license details. */
#include "../common.h"
#if defined(__clang__)
# pragma clang diagnostic ignored "-Wcast-align"
#endif
/**
* Marshal a `struct libkeccak_state` into a buffer
*
* @param state The state to marshal
* @param data_ The output buffer, can be `NULL`
* @return The number of bytes stored to `data`
*/
size_t
libkeccak_state_marshal(const struct libkeccak_state *restrict state, void *restrict data_)
{
#define set(VAR)\
do {\
__builtin_memcpy(data, &state->VAR, sizeof(state->VAR));\
data += sizeof(state->VAR);\
} while (0)
unsigned char *restrict start = data_;
unsigned char *restrict data = start;
if (!data) {
return 7 * sizeof(long int) +
1 * sizeof(uint64_t) +
sizeof(state->S) +
2 * sizeof(size_t) +
state->mptr;
}
set(r);
set(c);
set(n);
set(b);
set(w);
set(wmod);
set(l);
set(nr);
__builtin_memcpy(data, &state->S, sizeof(state->S));
data += sizeof(state->S);
set(mptr);
set(mlen);
memcpy(data, state->M, state->mptr * sizeof(char));
data += state->mptr;
return (size_t)(data - start);
#undef set
}
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