target/nios2/op_helper.c

   1 /*
   2  * Altera Nios II helper routines.
   3  *
   4  * Copyright (C) 2012 Chris Wulff <crwulff@gmail.com>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see
  18  * <http://www.gnu.org/licenses/lgpl-2.1.html>
  19  */
  20
  21 #include "qemu/osdep.h"
  22 #include "cpu.h"
  23 #include "exec/helper-proto.h"
  24 #include "exec/exec-all.h"
  25 #include "qemu/main-loop.h"
  26
  27 void helper_raise_exception(CPUNios2State *env, uint32_t index)
  28 {
  29     CPUState *cs = env_cpu(env);
  30     cs->exception_index = index;
  31     cpu_loop_exit(cs);
  32 }
  33
  34 #ifndef CONFIG_USER_ONLY
  35 void helper_eret(CPUNios2State *env, uint32_t new_status, uint32_t new_pc)
  36 {
  37     env->ctrl[CR_STATUS] = new_status;
  38     env->pc = new_pc;
  39     cpu_loop_exit(env_cpu(env));
  40 }
  41 #endif /* !CONFIG_USER_ONLY */