modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/builtins/memops-asm-lib.c (about)

     1  extern void abort (void);
     2  extern int inside_main;
     3  typedef __SIZE_TYPE__ size_t;
     4  
     5  #define TEST_ABORT if (inside_main) abort()
     6  
     7  /* LTO code is at the present to able to track that asm alias my_bcopy on builtin
     8     actually refers to this function.  See PR47181. */
     9  __attribute__ ((used))
    10  void *
    11  my_memcpy (void *d, const void *s, size_t n)
    12  {
    13    char *dst = (char *) d;
    14    const char *src = (const char *) s;
    15    while (n--)
    16      *dst++ = *src++;
    17    return (char *) d;
    18  }
    19  
    20  /* LTO code is at the present to able to track that asm alias my_bcopy on builtin
    21     actually refers to this function.  See PR47181. */
    22  __attribute__ ((used))
    23  void
    24  my_bcopy (const void *s, void *d, size_t n)
    25  {
    26    char *dst = (char *) d;
    27    const char *src = (const char *) s;
    28    if (src >= dst)
    29      while (n--)
    30        *dst++ = *src++;
    31    else
    32      {
    33        dst += n;
    34        src += n;
    35        while (n--)
    36          *--dst = *--src;
    37      }
    38  }
    39  
    40  __attribute__ ((used))
    41  void *
    42  my_memmove (void *d, const void *s, size_t n)
    43  {
    44    char *dst = (char *) d;
    45    const char *src = (const char *) s;
    46    if (src >= dst)
    47      while (n--)
    48        *dst++ = *src++;
    49    else
    50      {
    51        dst += n;
    52        src += n;
    53        while (n--)
    54  	*--dst = *--src;
    55      }
    56  
    57    return d;
    58  }
    59  
    60  /* LTO code is at the present to able to track that asm alias my_bcopy on builtin
    61     actually refers to this function.  See PR47181. */
    62  __attribute__ ((used))
    63  void *
    64  my_memset (void *d, int c, size_t n)
    65  {
    66    char *dst = (char *) d;
    67    while (n--)
    68      *dst++ = c;
    69    return (char *) d;
    70  }
    71  
    72  /* LTO code is at the present to able to track that asm alias my_bcopy on builtin
    73     actually refers to this function.  See PR47181. */
    74  __attribute__ ((used))
    75  void
    76  my_bzero (void *d, size_t n)
    77  {
    78    char *dst = (char *) d;
    79    while (n--)
    80      *dst++ = '\0';
    81  }
    82  
    83  void *
    84  memcpy (void *d, const void *s, size_t n)
    85  {
    86    void *result = my_memcpy (d, s, n);
    87    TEST_ABORT;
    88    return result;
    89  }
    90  
    91  void
    92  bcopy (const void *s, void *d, size_t n)
    93  {
    94    my_bcopy (s, d, n);
    95    TEST_ABORT;
    96  }
    97  
    98  void *
    99  memset (void *d, int c, size_t n)
   100  {
   101    void *result = my_memset (d, c, n);
   102    TEST_ABORT;
   103    return result;
   104  }
   105  
   106  void
   107  bzero (void *d, size_t n)
   108  {
   109    my_bzero (d, n);
   110    TEST_ABORT;
   111  }
   112  
   113  #ifdef __vxworks
   114  /* The RTP C library uses bfill, which is defined in the same file as
   115     bzero and bcopy.  */
   116  #include "lib/bfill.c"
   117  #endif