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("gotol, small_imm") 12 __success __success_unpriv __retval(1) 13 __naked void gotol_small_imm(void) 14 { 15 asm volatile (" \ 16 call %[bpf_ktime_get_ns]; \ 17 if r0 == 0 goto l0_%=; \ 18 gotol l1_%=; \ 19 l2_%=: \ 20 gotol l3_%=; \ 21 l1_%=: \ 22 r0 = 1; \ 23 gotol l2_%=; \ 24 l0_%=: \ 25 r0 = 2; \ 26 l3_%=: \ 27 exit; \ 28 " : 29 : __imm(bpf_ktime_get_ns) 30 : __clobber_all); 31 } 32 33 #else 34 35 SEC("socket") 36 __description("cpuv4 is not supported by compiler or jit, use a dummy test") 37 __success 38 int dummy_test(void) 39 { 40 return 0; 41 } 42 43 #endif 44 45 char _license[] SEC("license") = "GPL"; 46