sysdeps/alpha/jmp_buf.h

   1 /* Define the machine-dependent type `jmp_buf'.  Alpha version.
   2 Copyright (C) 1992 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 Library General Public License as
   7 published by the Free Software Foundation; either version 2 of the
   8 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 Library General Public License for more details.
  14
  15 You should have received a copy of the GNU Library General Public
  16 License along with the GNU C Library; see the file COPYING.LIB.  If
  17 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  18 Cambridge, MA 02139, USA.  */
  19
  20 typedef struct
  21   {
  22     /* Integer registers:
  23            $0 is the return value;
  24            $1-$8, $22-$25, $28 are call-used;
  25            $9-$14 we save here;
  26            $15 is the FP and we save it here;
  27            $16-$21 are input arguments (call-used);
  28            $26 is the return PC and we save it here;
  29            $27 is the procedure value (i.e., the address of __setjmp);
  30            $29 is the global pointer, which the caller will reconstruct
  31            from the return address restored in $26;
  32            $30 is the stack pointer and we save it here;
  33            $31 is always zero.  */
  34     long int __9, __10, __11, __12, __13, __14;
  35     long int *__pc, *__fp, *__sp;
  36
  37 #if 1                           /* XXX need predefine for TARGET_FPREGS */
  38     /* Floating-point registers:
  39            $f0 is the floating return value;
  40            $f1, $f10-$f15, $f22-$f30 are call-used;
  41            $f2-$f9 we save here;
  42            $f16-$21 are input args (call-used);
  43            $f31 is always zero.  */
  44     double __f2, __f3, __f4, __f5, __f6, __f7, __f8, __f9;
  45 #endif  /* Have FP regs.  */
  46   } __jmp_buf[1];