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