sigcontext.h

一个C源代码分析器

/* Copyright (C) 1992 Free Software Foundation, Inc.
   Contributed by Brendan Kehoe ([e-mail]).

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */

/* Note that ANY change to this instantly implies a change to __handler.S.  */

struct sigcontext
  {
    /* Nonzero if running on signal stack.  */
    int sc_onstack;
    
    /* Signal mask to restore.  */
    sigset_t sc_mask;
    
    /* Program counter when the signal hit.  */
    __ptr_t sc_pc;
    
    /* Registers 0 through 31.  */
    int sc_regs[32];
    
    /* mul/div low and hi; these aren't part of a jmp_buf, but are part of the
       sigcontext and are referenced from the signal trampoline code.  */
    int sc_mdlo;
    int sc_mdhi;
    
    /* Flag to see if the FP's been used.  */
    int sc_ownedfp;
    
    /* Floating point registers 0 to 31.  */
    int sc_fpregs[32];
    /* Control & status register for FP.  */
    int sc_fpc_csr;
    
    /* Exception instruction register for FP. */
    int sc_fpc_eir;
    
    /* The coprocessor's cause register.  */
    int sc_cause;
    
    /* CPU bad virtual address.  */
    __ptr_t sc_badvaddr;
    
    /* CPU board bad physical address.  */
    __ptr_t sc_badpaddr;
  };