gdb/testsuite/gdb.arch/aarch64-mops-watchpoint.c

   1 /* This test program is part of GDB, the GNU debugger.
   2
   3    Copyright 2024 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 int
  19 main (void)
  20 {
  21   char source[40] __attribute__ ((aligned (8)))
  22     = "This is a relatively long string...";
  23   char a[40] __attribute__ ((aligned (8)))
  24     = "String to be overwritten with zeroes";
  25   char b[40] __attribute__ ((aligned (8)))
  26     = "Another string to be memcopied...";
  27   char c[40] __attribute__ ((aligned (8)))
  28     = "Another string to be memmoved...";
  29   char *p, *q;
  30   long size, zero;
  31
  32   /* Break here.  */
  33   p = a;
  34   size = sizeof (a);
  35   zero = 0;
  36   /* memset implemented in MOPS instructions.  */
  37   __asm__ volatile ("setp [%0]!, %1!, %2\n\t"
  38                     "setm [%0]!, %1!, %2\n\t"
  39                     "sete [%0]!, %1!, %2\n\t"
  40                     : "+&r"(p), "+&r"(size)
  41                     : "r"(zero)
  42                     : "memory");
  43
  44   p = b;
  45   q = source;
  46   size = sizeof (b);
  47   /* memmove implemented in MOPS instructions.  */
  48   __asm__ volatile ("cpyp   [%0]!, [%1]!, %2!\n\t"
  49                     "cpym   [%0]!, [%1]!, %2!\n\t"
  50                     "cpye   [%0]!, [%1]!, %2!\n\t"
  51                     : "+&r" (p), "+&r" (q), "+&r" (size)
  52                     :
  53                     : "memory");
  54   p = c;
  55   q = source;
  56   size = sizeof (c);
  57   /* memcpy implemented in MOPS instructions.  */
  58   __asm__ volatile ("cpyfp   [%0]!, [%1]!, %2!\n\t"
  59                     "cpyfm   [%0]!, [%1]!, %2!\n\t"
  60                     "cpyfe   [%0]!, [%1]!, %2!\n\t"
  61                     : "+&r" (p), "+&r" (q), "+&r" (size)
  62                     :
  63                     : "memory");
  64
  65   return 0;
  66 }