sysdeps/s390/bits/setjmp.h

   1 /* Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /* Define the machine-dependent type `jmp_buf'.  IBM s390 version.  */
  20
  21 #ifndef __S390_SETJMP_H__
  22 #define __S390_SETJMP_H__
  23
  24 #include <bits/wordsize.h>
  25
  26 #define __JB_GPR6       0
  27 #define __JB_GPR7       1
  28 #define __JB_GPR8       2
  29 #define __JB_GPR9       3
  30 #define __JB_GPR10      4
  31 #define __JB_GPR11      5
  32 #define __JB_GPR12      6
  33 #define __JB_GPR13      7
  34 #define __JB_GPR14      8
  35 #define __JB_GPR15      9
  36
  37 #ifndef _ASM
  38
  39 typedef struct {
  40     /* We save registers 6-15.  */
  41     long int __gregs[10];
  42
  43 #if __WORDSIZE == 64
  44    /* We save fpu registers 1, 3, 5 and 7.  */
  45     long __fpregs[8];
  46 #else
  47     /* We save fpu registers 4 and 6.  */
  48     long __fpregs[4];
  49 #endif
  50 } __jmp_buf[1];
  51
  52 #endif
  53
  54 /* Test if longjmp to JMPBUF would unwind the frame
  55    containing a local variable at ADDRESS.  */
  56 #define _JMPBUF_UNWINDS(jmpbuf, address) \
  57   ((void *) (address) < (void *) (jmpbuf)->__gregs[__JB_GPR15])
  58
  59 #endif /* __S390_SETJMP_H__ */