1// SPDX-License-Identifier: GPL-2.0
2// Copyright (C) 2020 ARM Limited
3
4#include <stdio.h>
5#include <stdlib.h>
6#include <sys/auxv.h>
7
8#include "helper.h"
9
10int main(void)
11{
12	struct signatures signed_vals;
13	unsigned long hwcaps;
14	size_t val;
15
16	fread(&val, sizeof(size_t), 1, stdin);
17
18	/* don't try to execute illegal (unimplemented) instructions) caller
19	 * should have checked this and keep worker simple
20	 */
21	hwcaps = getauxval(AT_HWCAP);
22
23	if (hwcaps & HWCAP_PACA) {
24		signed_vals.keyia = keyia_sign(val);
25		signed_vals.keyib = keyib_sign(val);
26		signed_vals.keyda = keyda_sign(val);
27		signed_vals.keydb = keydb_sign(val);
28	}
29	signed_vals.keyg = (hwcaps & HWCAP_PACG) ?  keyg_sign(val) : 0;
30
31	fwrite(&signed_vals, sizeof(struct signatures), 1, stdout);
32
33	return 0;
34}
35