cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

op_helper.c (1737B)

      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/cpu_ldst.h"
     25#include "exec/exec-all.h"
     26#include "qemu/main-loop.h"
     27
     28#if !defined(CONFIG_USER_ONLY)
     29void helper_mmu_read_debug(CPUNios2State *env, uint32_t rn)
     30{
     31    mmu_read_debug(env, rn);
     32}
     33
     34void helper_mmu_write(CPUNios2State *env, uint32_t rn, uint32_t v)
     35{
     36    mmu_write(env, rn, v);
     37}
     38
     39static void nios2_check_interrupts(CPUNios2State *env)
     40{
     41    if (env->irq_pending &&
     42        (env->regs[CR_STATUS] & CR_STATUS_PIE)) {
     43        env->irq_pending = 0;
     44        cpu_interrupt(env_cpu(env), CPU_INTERRUPT_HARD);
     45    }
     46}
     47
     48void helper_check_interrupts(CPUNios2State *env)
     49{
     50    qemu_mutex_lock_iothread();
     51    nios2_check_interrupts(env);
     52    qemu_mutex_unlock_iothread();
     53}
     54#endif /* !CONFIG_USER_ONLY */
     55
     56void helper_raise_exception(CPUNios2State *env, uint32_t index)
     57{
     58    CPUState *cs = env_cpu(env);
     59    cs->exception_index = index;
     60    cpu_loop_exit(cs);
     61}