// SPDX-License-Identifier: GPL-2.0 #include <linux/bpf.h> #include <bpf/bpf_helpers.h> #include "bpf_misc.h" #ifdef CAN_USE_GOTOL SEC("socket") __description("gotol, small_imm") __success __success_unpriv __retval(1) __naked void gotol_small_imm(void) { asm volatile (" \ call %[bpf_ktime_get_ns]; \ if r0 == 0 goto l0_%=; \ gotol l1_%=; \ l2_%=: \ gotol l3_%=; \ l1_%=: \ r0 = 1; \ gotol l2_%=; \ l0_%=: \ r0 = 2; \ l3_%=: \ exit; \ " : : __imm(bpf_ktime_get_ns) : __clobber_all); } SEC("socket") __description("gotol, large_imm") __success __failure_unpriv __retval(40000) __naked void gotol_large_imm(void) { asm volatile (" \ gotol 1f; \ 0: \ r0 = 0; \ .rept 40000; \ r0 += 1; \ .endr; \ exit; \ 1: gotol 0b; \ " : : : __clobber_all); } #else SEC("socket") __description("cpuv4 is not supported by compiler or jit, use a dummy test") __success int dummy_test(void) { return 0; } #endif char _license[] SEC("license") = "GPL";