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// basic_test.cc -- a test case for gold

// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.

// Written by Ian Lance Taylor <iant@google.com>.

// This file is part of gold.

// This program is free software; you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation; either version 3 of the License, or

// (at your option) any later version.

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License

// along with this program; if not, write to the Free Software

// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

// MA 02110-1301, USA.

// The goal of this program is to produce as many different types of

// relocations as we can in a stand-alone program that does not use

// TLS.  This program is compiled without optimization.

// 1  Code reference to global data.

// 2  Code reference to static data.

// 3  Code reference to BSS data.

// 4  Code reference to offset within global data.

// 5  Code reference to offset within static data.

// 6  Code reference to offset within BSS data.

// 7  Switch statement with a table of destinations.

// 8  Taking the address of a label (a gcc extension).

// 9  Taking the address of a nested function (a gcc extension).

// 10 Data reference to global data.

// 11 Data reference to static data.

// 12 Data reference to BSS data.

// 13 Data reference to offset within global data.

// 14 Data reference to offset within static data.

// 15 Data reference to offset within BSS data.

// 16 Virtual table.

// 17 Inline function.

// 18 Call through pointer to method.

// 19 Initialize variable to pointer to method.

// 20 Global constructor and destructor.

// 1 Code reference to global data.

int t1 = 11;

// 2 Code reference to static data.

static int t2 = 22;

// 3 Code reference to BSS data (initialized after program starts, to

// 33).

int t3;

// 4 Code reference to offset within global data.

char t4[] = "Hello, world";

// 5 Code reference to offset within static data.

static char t5[] = "Hello, world";

// 6 Code reference to offset within BSS data (initialized after

// program starts, to contents of t4).

char t6[13];

// Test cases 1 through 6.

bool

t1_6()

{

  return (t1 == 11

          && t2 == 22

          && t3 == 33

          && t4[5] == ','

          && t5[7] == 'w'

          && t6[9] == 'r');

}

// 7  Switch statement with a table of destinations.

int

t7(int i)

{

  switch (i)

    {

    case 0:

      return 12;

    case 1:

      return 34;

    case 2:

      return 56;

    case 3:

      return 78;

    case 4:

      return 90;

    case 5:

      return 13;

    case 6:

      return 0;

    case 7:

      return 57;

    case 8:

      return 79;

    case 9:

      return 81;

    default:

      return 144;

    }

}

// 8  Taking the address of a label (a gcc extension).

int

t8(int i)

{

  for (int j = 0; j < 10; ++j)

    {

      void* p;

      if (i + j > 6)

        p = &&lab1;

      else

        p = &&lab2;

      if (j == 7)

        goto *p;

    }

  return 15;

 lab1:

  return 0;

 lab2:

  return 12;

}

// 9  Taking the address of a nested function (a gcc extension).

// Disabled because this is only supported in C, not C++.

int

t9a(int (*pfn)(int))

{

  return (*pfn)(10) - 10;

}

int

t9(int i)

{

#if 0

  int

  t9c(int j)

  {

    return i + j;

  }

  return t9a(&t9c);

#else

  return i;

#endif

}

// 10 Data reference to global data.

int* t10 = &t1;

// 11 Data reference to static data.

int* t11 = &t2;

// 12 Data reference to BSS data.

int* t12 = &t3;

// 13 Data reference to offset within global data.

char* t13 = &t4[6];

// 14 Data reference to offset within static data.

char* t14 = &t5[8];

// 15 Data reference to offset within BSS data.

char* t15 = &t6[10];

// Test cases 10 through 15.

bool

t10_15()

{

  return (*t10 == 11

          && *t11 == 22

          && *t12 == 33

          && *t13 == ' '

          && *t14 == 'o'

          && *t15 == 'l');

}

// 16 Virtual table.

class t16a

{

 public:

  virtual

  ~t16a()

  { }

  virtual int

  t()

  { return 83; }

};

class t16b : public t16a

{

 public:

  virtual int

  t()

  { return 92; }

};

t16b t16v;

bool

t16()

{

  return t16v.t() == 92;

}

// 17 Inline function.

inline int

t17a()

{

  return 74;

}

bool

t17()

{

  return t17a() == 74;

}

// 18 Call through pointer to method.

class t18a

{

 public:

  int

  ta()

  { return 65; }

  int

  tb()

  { return 90; }

};

t18a t18v;

int

t18f(int (t18a::* p)())

{

  return (t18v.*p)();

}

bool

t18()

{

  return t18f(&t18a::ta) == 65;

}

// 19 Initialize variable to pointer to method.

int (t18a::* t19v)() = &t18a::tb;

bool

t19()

{

  return (t18v.*t19v)() == 90;

}

// 20 Global constructor and destructor.

class t20a

{

 public:

  t20a()

    : i(96)

  { }

  ~t20a()

  { }

  int

  get() const

  { return this->i; }

 private:

  int i;

};

t20a t20v;

bool

t20()

{

  return t20v.get() == 96;

}

// Main function.  Initialize variables and call test functions.

int

main()

{

  t3 = 33;

  for (int i = 0; i < 13; ++i)

    t6[i] = t4[i];

  if (t1_6()

      && t7(6) == 0

      && t8(0) == 0

      && t9(5) == 5

      && t10_15()

      && t16()

      && t17()

      && t18()

      && t19()

      && t20())

    return 0;

  else

    return 1;

}