Blame elf/tst-tlsmod2.c

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#include <stdio.h>
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#include "tls-macros.h"
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COMMON_INT_DEF(foo);
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int
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in_dso (int n, int *caller_foop)
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{
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  int *foop;
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  int result = 0;
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  puts ("foo");			/* Make sure PLT is used before macros.  */
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  asm ("" ::: "memory");
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  foop = TLS_GD (foo);
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  if (caller_foop != NULL && foop != caller_foop)
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    {
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      printf ("callers address of foo differs: %p vs %p\n", caller_foop, foop);
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      result = 1;
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    }
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  else if (*foop != n)
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    {
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      printf ("foo != %d\n", n);
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      result = 1;
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    }
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  *foop = 16;
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  return result;
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}