1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun /* Copyright (c) 2019 Facebook */ 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun #include <stdbool.h> 5*4882a593Smuzhiyun #include <linux/bpf.h> 6*4882a593Smuzhiyun #include <bpf/bpf_helpers.h> 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun struct s { 9*4882a593Smuzhiyun int a; 10*4882a593Smuzhiyun long long b; 11*4882a593Smuzhiyun } __attribute__((packed)); 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun /* .data section */ 14*4882a593Smuzhiyun int in1 = -1; 15*4882a593Smuzhiyun long long in2 = -1; 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun /* .bss section */ 18*4882a593Smuzhiyun char in3 = '\0'; 19*4882a593Smuzhiyun long long in4 __attribute__((aligned(64))) = 0; 20*4882a593Smuzhiyun struct s in5 = {}; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* .rodata section */ 23*4882a593Smuzhiyun const volatile struct { 24*4882a593Smuzhiyun const int in6; 25*4882a593Smuzhiyun } in = {}; 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun /* .data section */ 28*4882a593Smuzhiyun int out1 = -1; 29*4882a593Smuzhiyun long long out2 = -1; 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun /* .bss section */ 32*4882a593Smuzhiyun char out3 = 0; 33*4882a593Smuzhiyun long long out4 = 0; 34*4882a593Smuzhiyun int out6 = 0; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun extern bool CONFIG_BPF_SYSCALL __kconfig; 37*4882a593Smuzhiyun extern int LINUX_KERNEL_VERSION __kconfig; 38*4882a593Smuzhiyun bool bpf_syscall = 0; 39*4882a593Smuzhiyun int kern_ver = 0; 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun SEC("raw_tp/sys_enter") handler(const void * ctx)42*4882a593Smuzhiyunint handler(const void *ctx) 43*4882a593Smuzhiyun { 44*4882a593Smuzhiyun static volatile struct s out5; 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun out1 = in1; 47*4882a593Smuzhiyun out2 = in2; 48*4882a593Smuzhiyun out3 = in3; 49*4882a593Smuzhiyun out4 = in4; 50*4882a593Smuzhiyun out5 = in5; 51*4882a593Smuzhiyun out6 = in.in6; 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun bpf_syscall = CONFIG_BPF_SYSCALL; 54*4882a593Smuzhiyun kern_ver = LINUX_KERNEL_VERSION; 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun return 0; 57*4882a593Smuzhiyun } 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun char _license[] SEC("license") = "GPL"; 60