1  /* Tests register values retrieved by getcontext() for mips o32.
       2     Copyright (C) 2017-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library 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 GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <errno.h>
      20  #include <stdio.h>
      21  #include <stdlib.h>
      22  #include <string.h>
      23  #include <ucontext.h>
      24  
      25  
      26  #if !defined __mips__ || _MIPS_SIM != _ABIO32
      27  # error "MIPS O32 specific test."
      28  #endif
      29  
      30  #define SP_REG 29
      31  
      32  static int
      33  do_test (void)
      34  {
      35    ucontext_t ctx;
      36    memset (&ctx, 0, sizeof (ctx));
      37    int status = getcontext (&ctx);
      38    if (status)
      39      {
      40        printf ("\ngetcontext() failed, errno: %d.\n", errno);
      41        return 1;
      42      }
      43  
      44    if (ctx.uc_mcontext.gregs[SP_REG] == 0
      45        || ctx.uc_mcontext.gregs[SP_REG] > 0xffffffff)
      46      {
      47        printf ("\nError getcontext(): invalid $sp = 0x%llx.\n",
      48                ctx.uc_mcontext.gregs[SP_REG]);
      49        return 1;
      50      }
      51  
      52    if (ctx.uc_mcontext.pc == 0
      53        || ctx.uc_mcontext.pc > 0xffffffff)
      54      {
      55        printf ("\nError getcontext(): invalid ctx.uc_mcontext.pc = 0x%llx.\n",
      56                ctx.uc_mcontext.pc);
      57        return 1;
      58      }
      59  
      60    return 0;
      61  }
      62  
      63  #include <support/test-driver.c>