sysdeps/mach/hurd/i386/longjmp-ts.c

   1 /* Perform a `longjmp' on a Mach thread_state.  i386 version.
   2 Copyright (C) 1991, 1994 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 #include <hurd/signal.h>
  21 #include <setjmp.h>
  22 #include <mach/thread_status.h>
  23
  24
  25 /* Set up STATE to do the equivalent of `longjmp (ENV, VAL);'.  */
  26
  27 void
  28 _hurd_longjmp_thread_state (void *state, jmp_buf env, int val)
  29 {
  30   struct i386_thread_state *ts = state;
  31
  32   ts->ebx = env[0].__jmpbuf[0].__bx;
  33   ts->esi = env[0].__jmpbuf[0].__si;
  34   ts->edi = env[0].__jmpbuf[0].__di;
  35   ts->ebp = (int) env[0].__jmpbuf[0].__bp;
  36   ts->uesp = (int) env[0].__jmpbuf[0].__sp;
  37   ts->eip = (int) env[0].__jmpbuf[0].__pc;
  38   ts->eax = val ?: 1;
  39 }