1  /* Private macros for accessing __jmp_buf contents.  Nios II version.
       2     Copyright (C) 2006-2023 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  /* Save offsets within __jmp_buf.  */
      20  #define JB_R16 0
      21  #define JB_R17 1
      22  #define JB_R18 2
      23  #define JB_R19 3
      24  #define JB_R20 4
      25  #define JB_R21 5
      26  #define JB_R22 6
      27  #define JB_FP  7
      28  #define JB_RA  8
      29  #define JB_SP  9
      30  
      31  #ifndef  __ASSEMBLER__
      32  #include <setjmp.h>
      33  #include <stdint.h>
      34  #include <sysdep.h>
      35  #include <pointer_guard.h>
      36  
      37  static inline uintptr_t __attribute__ ((unused))
      38  _jmpbuf_sp (__jmp_buf jmpbuf)
      39  {
      40    uintptr_t sp = jmpbuf[JB_SP];
      41    PTR_DEMANGLE (sp);
      42    return sp;
      43  }
      44  #endif
      45  
      46  /* Helper for generic ____longjmp_chk(). */
      47  #define JB_FRAME_ADDRESS(buf) ((void *) _jmpbuf_sp (buf))