llvm/libc/test/integration/startup/gpu/init_fini_array_test.cpp

//===-- Loader test to test init and fini array iteration -----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "test/IntegrationTest/test.h"

#include <stddef.h>

int global_destroyed = false;

class A {
private:
  int val[1024];

public:
  A(int i, int a) {
    for (int k = 0; k < 1024; ++k)
      val[k] = 0;
    val[i] = a;
  }

  ~A() { global_destroyed = true; }

  int get(int i) const { return val[i]; }
};

int GLOBAL_INDEX = 512;
int INITVAL_INITIALIZER = 0x600D;
int BEFORE_INITIALIZER = 0xFEED;

A global(GLOBAL_INDEX, INITVAL_INITIALIZER);

int initval = 0;
int before = 0;

__attribute__((constructor(101))) void run_before() {
  before = BEFORE_INITIALIZER;
}

__attribute__((constructor(65535))) void run_after() {
  ASSERT_EQ(before, BEFORE_INITIALIZER);
}

__attribute__((constructor)) void set_initval() {
  initval = INITVAL_INITIALIZER;
}
__attribute__((destructor(101))) void reset_initval() {
  ASSERT_TRUE(global_destroyed);
  initval = 0;
}

TEST_MAIN(int argc, char **argv, char **env) {
  ASSERT_EQ(global.get(GLOBAL_INDEX), INITVAL_INITIALIZER);
  ASSERT_EQ(initval, INITVAL_INITIALIZER);
  return 0;
}