sysdeps/unix/bsd/ultrix4/mips/bits/sigcontext.h

   1 /* Copyright (C) 1992, 1994, 1997 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 #ifndef _SIGNAL_H
  20 # error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
  21 #endif
  22
  23 /* Note that ANY change to this instantly implies a change to __handler.S.  */
  24
  25 struct sigcontext
  26   {
  27     /* Nonzero if running on signal stack.  */
  28     int sc_onstack;
  29
  30     /* Signal mask to restore.  */
  31     __sigset_t sc_mask;
  32
  33     /* Program counter when the signal hit.  */
  34     __ptr_t sc_pc;
  35
  36     /* Registers 0 through 31.  */
  37     int sc_regs[32];
  38
  39     /* mul/div low and hi; these aren't part of a jmp_buf, but are part of the
  40        sigcontext and are referenced from the signal trampoline code.  */
  41     int sc_mdlo;
  42     int sc_mdhi;
  43
  44     /* Flag to see if the FP's been used.  */
  45     int sc_ownedfp;
  46
  47     /* Floating point registers 0 to 31.  */
  48     int sc_fpregs[32];
  49     /* Control & status register for FP.  */
  50     int sc_fpc_csr;
  51
  52     /* Exception instruction register for FP. */
  53     int sc_fpc_eir;
  54
  55     /* The coprocessor's cause register.  */
  56     int sc_cause;
  57
  58     /* CPU bad virtual address.  */
  59     __ptr_t sc_badvaddr;
  60
  61     /* CPU board bad physical address.  */
  62     __ptr_t sc_badpaddr;
  63   };