cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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test_static_linked2.c (685B)

      1// SPDX-License-Identifier: GPL-2.0
      2/* Copyright (c) 2021 Facebook */
      3
      4#include <linux/bpf.h>
      5#include <bpf/bpf_helpers.h>
      6
      7/* 4-byte aligned .data */
      8static volatile int static_var1 = 5;
      9static volatile int static_var2 = 6;
     10int var2 = -1;
     11/* 8-byte aligned .rodata */
     12const volatile long rovar2;
     13
     14/* same "subprog" name in both files */
     15static __noinline int subprog(int x)
     16{
     17	/* but different formula */
     18	return x * 3;
     19}
     20
     21SEC("raw_tp/sys_enter")
     22int handler2(const void *ctx)
     23{
     24	var2 = subprog(rovar2) + static_var1 + static_var2;
     25
     26	return 0;
     27}
     28
     29/* different name and/or type of the variable doesn't matter */
     30char _license[] SEC("license") = "GPL";
     31int _version SEC("version") = 1;