gnu/dist/gcc4/gcc/testsuite/gcc.c-torture/execute/builtins/memops-asm.c

   1 /* Copyright (C) 2003 Free Software Foundation.
   2
   3    Test memcpy and memset in presence of redirect.  */
   4
   5 #define ASMNAME(cname)  ASMNAME2 (__USER_LABEL_PREFIX__, cname)
   6 #define ASMNAME2(prefix, cname) STRING (prefix) cname
   7 #define STRING(x)    #x
   8
   9 typedef __SIZE_TYPE__ size_t;
  10 extern void abort (void);
  11 extern void *memcpy (void *, const void *, size_t)
  12   __asm (ASMNAME ("my_memcpy"));
  13 extern void bcopy (const void *, void *, size_t)
  14   __asm (ASMNAME ("my_bcopy"));
  15 extern void *memset (void *, int, size_t)
  16   __asm (ASMNAME ("my_memset"));
  17 extern void bzero (void *, size_t)
  18   __asm (ASMNAME ("my_bzero"));
  19 extern int memcmp (const void *, const void *, size_t);
  20
  21 struct A { char c[32]; } a = { "foobar" };
  22 char x[64] = "foobar", y[64];
  23 int i = 39, j = 6, k = 4;
  24
  25 void
  26 main_test (void)
  27 {
  28   struct A b = a;
  29   struct A c = { { 'x' } };
  30
  31   if (memcmp (b.c, x, 32) || c.c[0] != 'x' || memcmp (c.c + 1, x + 32, 31))
  32     abort ();
  33   if (__builtin_memcpy (y, x, i) != y || memcmp (x, y, 64))
  34     abort ();
  35   if (memcpy (y + 6, x, j) != y + 6
  36       || memcmp (x, y, 6) || memcmp (x, y + 6, 58))
  37     abort ();
  38   if (__builtin_memset (y + 2, 'X', k) != y + 2
  39       || memcmp (y, "foXXXXfoobar", 13))
  40     abort ();
  41   bcopy (y + 1, y + 2, 6);
  42   if (memcmp (y, "fooXXXXfobar", 13))
  43     abort ();
  44   __builtin_bzero (y + 4, 2);
  45   if (memcmp (y, "fooX\0\0Xfobar", 13))
  46     abort ();
  47 }