1 // SPDX-License-Identifier: GPL-2.0
2
3 #include <linux/bpf.h>
4 #include <bpf/bpf_helpers.h>
5 #include "bpf_misc.h"
6
7 #if (defined(__TARGET_ARCH_arm64) || defined(__TARGET_ARCH_x86) || \
8 (defined(__TARGET_ARCH_riscv) && __riscv_xlen == 64) || \
9 defined(__TARGET_ARCH_arm) || defined(__TARGET_ARCH_s390) || \
10 defined(__TARGET_ARCH_loongarch)) && \
11 __clang_major__ >= 18
12
13 SEC("socket")
14 __description("BSWAP, 16")
15 __success __success_unpriv __retval(0x23ff)
16 __naked void bswap_16(void)
17 {
18 asm volatile (" \
19 r0 = 0xff23; \
20 r0 = bswap16 r0; \
21 exit; \
22 " ::: __clobber_all);
23 }
24
25 SEC("socket")
26 __description("BSWAP, 32")
27 __success __success_unpriv __retval(0x23ff0000)
28 __naked void bswap_32(void)
29 {
30 asm volatile (" \
31 r0 = 0xff23; \
32 r0 = bswap32 r0; \
33 exit; \
34 " ::: __clobber_all);
35 }
36
37 SEC("socket")
38 __description("BSWAP, 64")
39 __success __success_unpriv __retval(0x34ff12ff)
40 __naked void bswap_64(void)
41 {
42 asm volatile (" \
43 r0 = %[u64_val] ll; \
44 r0 = bswap64 r0; \
45 exit; \
46 " :
47 : [u64_val]"i"(0xff12ff34ff56ff78ull)
48 : __clobber_all);
49 }
50
51 #else
52
53 SEC("socket")
54 __description("cpuv4 is not supported by compiler or jit, use a dummy test")
55 __success
56 int dummy_test(void)
57 {
58 return 0;
59 }
60
61 #endif
62
63 char _license[] SEC("license") = "GPL";
64
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.