| // 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; | |
| fread(&val, sizeof(size_t), 1, stdin); | |
| /* 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; | |
| } |