sysdeps/nios2/jmpbuf-offsets.h

   1 /* Private macros for accessing __jmp_buf contents.  Nios II version.
   2    Copyright (C) 2006-2017 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    <http://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
  36 static inline uintptr_t __attribute__ ((unused))
  37 _jmpbuf_sp (__jmp_buf jmpbuf)
  38 {
  39   uintptr_t sp = jmpbuf[JB_SP];
  40 #ifdef PTR_DEMANGLE
  41   PTR_DEMANGLE (sp);
  42 #endif
  43   return sp;
  44 }
  45 #endif
  46
  47 /* Helper for generic ____longjmp_chk(). */
  48 #define JB_FRAME_ADDRESS(buf) ((void *) _jmpbuf_sp (buf))