sysdeps/mips/jmp_buf.h

   1 /* Define the machine-dependent type `jmp_buf'.  MIPS version.
   2    Copyright (C) 1992, 1993, 1995 Free Software Foundation, Inc.
   3    Contributed by Brendan Kehoe (brendan@zen.org).
   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     /* Program counter.  */
  23     __ptr_t __pc;
  24
  25     /* Stack pointer.  */
  26     __ptr_t __sp;
  27
  28     /* Callee-saved registers s0 through s7.  */
  29     int __regs[8];
  30
  31     /* The frame pointer.  */
  32     __ptr_t __fp;
  33
  34     /* The global pointer.  */
  35     __ptr_t __gp;
  36
  37     /* Floating point status register.  */
  38     int __fpc_csr;
  39
  40     /* Callee-saved floating point registers.  */
  41     double __fpregs[6];
  42   } __jmp_buf[1];
  43
  44 #ifdef __USE_MISC
  45 /* Offset to the program counter in `jmp_buf'.  */
  46 #define JB_PC   0
  47 #endif
  48
  49
  50 /* Test if longjmp to JMPBUF would unwind the frame
  51    containing a local variable at ADDRESS.  */
  52 #define _JMPBUF_UNWINDS(jmpbuf, address) \
  53   ((__ptr_t) (address) < (jmpbuf)[0].__sp)