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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2020 ARM Limited
#include <stdio.h>
#include <stdlib.h>
#include <sys/auxv.h>
#include "helper.h"
int main(void)
{
struct signatures signed_vals;
unsigned long hwcaps;
size_t val;
size_t size = fread(&val, sizeof(size_t), 1, stdin);
if (size != 1) {
fprintf(stderr, "Could not read input from stdin\n");
return EXIT_FAILURE;
}
/* don't try to execute illegal (unimplemented) instructions) caller
* should have checked this and keep worker simple
*/
hwcaps = getauxval(AT_HWCAP);
if (hwcaps & HWCAP_PACA) {
signed_vals.keyia = keyia_sign(val);
signed_vals.keyib = keyib_sign(val);
signed_vals.keyda = keyda_sign(val);
signed_vals.keydb = keydb_sign(val);
}
signed_vals.keyg = (hwcaps & HWCAP_PACG) ? keyg_sign(val) : 0;
fwrite(&signed_vals, sizeof(struct signatures), 1, stdout);
return 0;
}
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