blob: b8e1db53a1b3386b4d7b0175e4c51842e02aeed5 (
plain) (
blame)
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
40
41
42
|
// SPDX-License-Identifier: AGPL-3.0-or-later
/* PASST - Plug A Simple Socket Transport
* for qemu/UNIX domain socket mode
*
* PASTA - Pack A Subtle Tap Abstraction
* for network namespace/tap device mode
*
* arch.c - Architecture-specific implementations
*
* Copyright (c) 2022 Red Hat GmbH
* Author: Stefano Brivio <sbrivio@redhat.com>
*/
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
/**
* arch_avx2_exec() - Run AVX2 build if supported, drop suffix from argv[0]
* @argv: Arguments from command line
*/
#ifdef __x86_64__
void arch_avx2_exec(char **argv)
{
char *p = strstr(argv[0], ".avx2");
if (p) {
*p = 0;
} else if (__builtin_cpu_supports("avx2")) {
char path[PATH_MAX];
snprintf(path, PATH_MAX, "%s.avx2", argv[0]);
argv[0] = path;
execve(path, argv, environ);
perror("Can't run AVX2 build, using non-AVX2 version");
}
}
#else
void arch_avx2_exec(char **argv) { (void)argv; }
#endif
|
