longjmp-ctx.c

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/* Perform a `longjmp' on a `struct sigcontext'.  MIPS version.
Copyright (C) 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.

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.  */

#include <setjmp.h>
#include <hurd/signal.h>
#include <string.h>

void
_hurd_longjmp_sigcontext (struct sigcontext *scp, jmp_buf env, int retval)
{
  scp->sc_gpr[16] = env[0].__regs[0];
  scp->sc_gpr[17] = env[0].__regs[1];
  scp->sc_gpr[18] = env[0].__regs[2];
  scp->sc_gpr[19] = env[0].__regs[3];
  scp->sc_gpr[20] = env[0].__regs[4];
  scp->sc_gpr[21] = env[0].__regs[5];
  scp->sc_gpr[22] = env[0].__regs[6];
  scp->sc_gpr[23] = env[0].__regs[7];

  scp->sc_gpr[28] = (int) env[0].__gp;
  scp->sc_fp = (int) env[0].__fp;
  scp->sc_sp = (int) env[0].__sp;
  scp->sc_pc = (int) env[0].__pc;
  scp->sc_gpr[2] = retval ?: 1;
}