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)) && __clang_major__ >= 18 9 10 SEC("socket") 11 __description("BSWAP, 16") 12 __success __success_unpriv __retval(0x23ff) 13 __naked void bswap_16(void) 14 { 15 asm volatile (" \ 16 r0 = 0xff23; \ 17 r0 = bswap16 r0; \ 18 exit; \ 19 " ::: __clobber_all); 20 } 21 22 SEC("socket") 23 __description("BSWAP, 32") 24 __success __success_unpriv __retval(0x23ff0000) 25 __naked void bswap_32(void) 26 { 27 asm volatile (" \ 28 r0 = 0xff23; \ 29 r0 = bswap32 r0; \ 30 exit; \ 31 " ::: __clobber_all); 32 } 33 34 SEC("socket") 35 __description("BSWAP, 64") 36 __success __success_unpriv __retval(0x34ff12ff) 37 __naked void bswap_64(void) 38 { 39 asm volatile (" \ 40 r0 = %[u64_val] ll; \ 41 r0 = bswap64 r0; \ 42 exit; \ 43 " : 44 : [u64_val]"i"(0xff12ff34ff56ff78ull) 45 : __clobber_all); 46 } 47 48 #else 49 50 SEC("socket") 51 __description("cpuv4 is not supported by compiler or jit, use a dummy test") 52 __success 53 int dummy_test(void) 54 { 55 return 0; 56 } 57 58 #endif 59 60 char _license[] SEC("license") = "GPL"; 61