1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
// 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;
}
|
