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 __clang_major__ >= 18 11 12 SEC("socket") 13 __description("BSWAP, 16") 14 __success __success_unpriv __retval(0x23ff) 15 __naked void bswap_16(void) 16 { 17 asm volatile (" \ 18 r0 = 0xff23; \ 19 r0 = bswap16 r0; \ 20 exit; \ 21 " ::: __clobber_all); 22 } 23 24 SEC("socket") 25 __description("BSWAP, 32") 26 __success __success_unpriv __retval(0x23ff0000) 27 __naked void bswap_32(void) 28 { 29 asm volatile (" \ 30 r0 = 0xff23; \ 31 r0 = bswap32 r0; \ 32 exit; \ 33 " ::: __clobber_all); 34 } 35 36 SEC("socket") 37 __description("BSWAP, 64") 38 __success __success_unpriv __retval(0x34ff12ff) 39 __naked void bswap_64(void) 40 { 41 asm volatile (" \ 42 r0 = %[u64_val] ll; \ 43 r0 = bswap64 r0; \ 44 exit; \ 45 " : 46 : [u64_val]"i"(0xff12ff34ff56ff78ull) 47 : __clobber_all); 48 } 49 50 #else 51 52 SEC("socket") 53 __description("cpuv4 is not supported by compiler or jit, use a dummy test") 54 __success 55 int dummy_test(void) 56 { 57 return 0; 58 } 59 60 #endif 61 62 char _license[] SEC("license") = "GPL"; 63