64 lines · c
1// SPDX-License-Identifier: GPL-2.02 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__ >= 1812 13SEC("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 25SEC("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 37SEC("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#else52 53SEC("socket")54__description("cpuv4 is not supported by compiler or jit, use a dummy test")55__success56int dummy_test(void)57{58 return 0;59}60 61#endif62 63char _license[] SEC("license") = "GPL";64