/* This test script is part of GDB, the GNU debugger. Copyright 1999-2020 Free Software Foundation, Inc. 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, see <http://www.gnu.org/licenses/>. */ /* Test long long expression; test printing in general. * * /CLO/BUILD_ENV/Exports/cc -g +e -o long_long long_long.c * * or * * cc +e +DA2.0 -g -o long_long long_long.c */ #include <string.h> enum { MAX_BYTES = 16 }; void pack (unsigned char b[MAX_BYTES], int size, int nr) { static long long val[] = { 0x123456789abcdefLL, 01234567123456701234567LL, 12345678901234567890ULL}; volatile static int e = 1; int i; for (i = 0; i < nr; i++) { int offset; if (*(char *)&e) /* Little endian. */ offset = sizeof (long long) - size; else /* Big endian endian. */ offset = 0; memcpy (b + size * i, (char *) val + sizeof (long long) * i + offset, size); } } unsigned char b[MAX_BYTES]; unsigned char h[MAX_BYTES]; unsigned char w[MAX_BYTES]; unsigned char g[MAX_BYTES]; unsigned char c[MAX_BYTES]; unsigned char s[MAX_BYTES]; unsigned char i[MAX_BYTES]; unsigned char l[MAX_BYTES]; unsigned char ll[MAX_BYTES]; int known_types() { /* A union is used here as, hopefully it has well defined packing rules. */ struct { long long bin, oct, dec, hex; } val; memset (&val, 0, sizeof val); /* Known values, filling the full 64 bits. */ val.bin = 0x123456789abcdefLL; /* 64 bits = 16 hex digits */ val.oct = 01234567123456701234567LL; /* = 21+ octal digits */ val.dec = 12345678901234567890ULL; /* = 19+ decimal digits */ /* Stop here and look! */ val.hex = val.bin - val.dec | val.oct; return 0; } int main() { /* Pack Byte, Half, Word and Giant arrays with byte-ordered values. That way "(gdb) x" gives the same output on different architectures. */ pack (b, 1, 2); pack (h, 2, 2); pack (w, 4, 2); pack (g, 8, 2); pack (c, sizeof (char), 2); pack (s, sizeof (short), 2); pack (i, sizeof (int), 2); pack (l, sizeof (long), 2); pack (ll, sizeof (long long), 2); known_types(); return 0; } |