cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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excp_helper.c (1393B)

      1/*
      2 *  x86 exception helpers - user-mode specific code
      3 *
      4 *  Copyright (c) 2003 Fabrice Bellard
      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 <http://www.gnu.org/licenses/>.
     18 */
     19
     20#include "qemu/osdep.h"
     21#include "cpu.h"
     22#include "exec/exec-all.h"
     23#include "tcg/helper-tcg.h"
     24
     25bool x86_cpu_tlb_fill(CPUState *cs, vaddr addr, int size,
     26                      MMUAccessType access_type, int mmu_idx,
     27                      bool probe, uintptr_t retaddr)
     28{
     29    X86CPU *cpu = X86_CPU(cs);
     30    CPUX86State *env = &cpu->env;
     31
     32    env->cr[2] = addr;
     33    env->error_code = (access_type == MMU_DATA_STORE) << PG_ERROR_W_BIT;
     34    env->error_code |= PG_ERROR_U_MASK;
     35    cs->exception_index = EXCP0E_PAGE;
     36    env->exception_is_int = 0;
     37    env->exception_next_eip = -1;
     38    cpu_loop_exit_restore(cs, retaddr);
     39}