Subversion Repositories openrisc_2011-10-31

/* This is a small test to see if bitfields are working.  It is only a

   few structs and a union and a test to see if they have the correct

   size, if values can be read and written and a couple of argument

   passing tests.  No alignment testing is done.  */

#include "defines.h"

#include "macros.h"

/* These five bitfields are taken from the System V ABI, Intel 386

   architecture supplement.  */

/* Word aligned, sizeof is 4.  */

struct RightToLeft

{

  int j:5;

  int k:6;

  int m:7;

};

/* Word aligned, sizeof is 12.  */

struct BoundaryAlignment

{

  short s:9;

  int   j:9;

  char  c;

  short t:9;

  short u:9;

  char  d;

};

/* Halfword aligned, sizeof is 2.  */

struct StorageUnitSharing

{

  char  c;

  short s:8;

};

/* Halfword aligned, sizeof is 2.  */

union Allocation

{

  char  c;

  short s:8;

};

/* Byte aligned, sizeof is 9.  */

struct Unnamed

{

  char  c;

  int    :0;

  char  d;

  short  :9;

  char  e;

  char   :0;

};

/* Extra struct testing bitfields in larger types.

   Doubleword aligned, sizeof is 8.  */

struct LargerTypes

{

  long long l:33;

  int       i:31;

};

void

passing1 (struct RightToLeft str, int j, int k, int m)

{

  assert (str.j == j);

  assert (str.k == k);

  assert (str.m == m);

}

void

passing2 (struct BoundaryAlignment str, short s, int j, char c, short t,

          short u, char d)

{

  assert (str.s == s);

  assert (str.j == j);

  assert (str.c == c);

  assert (str.t == t);

  assert (str.u == u);

  assert (str.d == d);

}

void

passing3 (struct StorageUnitSharing str, char c, short s)

{

  assert (str.c == c);

  assert (str.s == s);

}

void

passing4 (struct Unnamed str, char c, char d, char e)

{

  assert (str.c == c);

  assert (str.d == d);

  assert (str.e == e);

}

void

passing5 (struct LargerTypes str, long long l, int i)

{

  assert (str.l == l);

  assert (str.i == i);

}

void

passingU (union Allocation u, char c)

{

  assert (u.c == c);

  assert (u.s == c);

}

int

main (void)

{

  struct RightToLeft str1;

  struct BoundaryAlignment str2;

  struct StorageUnitSharing str3;

  struct Unnamed str4;

  struct LargerTypes str5;

  union Allocation u;

  /* Check sizeof's.  */

  check_size(str1, 4);

  check_size(str2, 12);

  check_size(str3, 2);

  check_size(str4, 9);

  check_size(str5, 8);

  check_size(u, 2);

  /* Check alignof's.  */

  check_align_lv(str1, 4);

  check_align_lv(str2, 4);

  check_align_lv(str3, 2);

  check_align_lv(str4, 1);

  check_align_lv(str5, 8);

  check_align_lv(u, 2);

  /* Check passing.  */

  str1.j = str2.s = str3.c = str4.c = str5.l = 4;

  str1.k = str2.j = str3.s = str4.d = str5.i = 5;

  str1.m = str2.c = str4.e = 6;

  str2.t = 7;

  str2.u = 8;

  str2.d = 9;

  passing1 (str1, 4, 5, 6);

  passing2 (str2, 4, 5, 6, 7, 8, 9);

  passing3 (str3, 4, 5);

  passing4 (str4, 4, 5, 6);

  passing5 (str5, 4, 5);

  u.c = 5;

  passingU (u, 5);

  u.s = 6;

  passingU (u, 6);

  return 0;

}