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glibc  2.9
sigcontext.h
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00001 /* Copyright (C) 1992, 1994, 1997 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #ifndef _SIGNAL_H
00020 # error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
00021 #endif
00022 
00023 /* Note that ANY change to this instantly implies a change to __handler.S.  */
00024 
00025 struct sigcontext
00026   {
00027     /* Nonzero if running on signal stack.  */
00028     int sc_onstack;
00029 
00030     /* Signal mask to restore.  */
00031     __sigset_t sc_mask;
00032 
00033     /* Program counter when the signal hit.  */
00034     __ptr_t sc_pc;
00035 
00036     /* Registers 0 through 31.  */
00037     int sc_regs[32];
00038 
00039     /* mul/div low and hi; these aren't part of a jmp_buf, but are part of the
00040        sigcontext and are referenced from the signal trampoline code.  */
00041     int sc_mdlo;
00042     int sc_mdhi;
00043 
00044     /* Flag to see if the FP's been used.  */
00045     int sc_ownedfp;
00046 
00047     /* Floating point registers 0 to 31.  */
00048     int sc_fpregs[32];
00049     /* Control & status register for FP.  */
00050     int sc_fpc_csr;
00051 
00052     /* Exception instruction register for FP. */
00053     int sc_fpc_eir;
00054 
00055     /* The coprocessor's cause register.  */
00056     int sc_cause;
00057 
00058     /* CPU bad virtual address.  */
00059     __ptr_t sc_badvaddr;
00060 
00061     /* CPU board bad physical address.  */
00062     __ptr_t sc_badpaddr;
00063   };