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

timers-state.h (2341B)

      1/*
      2 * QEMU System Emulator
      3 *
      4 * Copyright (c) 2003-2008 Fabrice Bellard
      5 *
      6 * Permission is hereby granted, free of charge, to any person obtaining a copy
      7 * of this software and associated documentation files (the "Software"), to deal
      8 * in the Software without restriction, including without limitation the rights
      9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     10 * copies of the Software, and to permit persons to whom the Software is
     11 * furnished to do so, subject to the following conditions:
     12 *
     13 * The above copyright notice and this permission notice shall be included in
     14 * all copies or substantial portions of the Software.
     15 *
     16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     22 * THE SOFTWARE.
     23 */
     24
     25#ifndef TIMERS_STATE_H
     26#define TIMERS_STATE_H
     27
     28/* timers state, for sharing between icount and cpu-timers */
     29
     30typedef struct TimersState {
     31    /* Protected by BQL.  */
     32    int64_t cpu_ticks_prev;
     33    int64_t cpu_ticks_offset;
     34
     35    /*
     36     * Protect fields that can be respectively read outside the
     37     * BQL, and written from multiple threads.
     38     */
     39    QemuSeqLock vm_clock_seqlock;
     40    QemuSpin vm_clock_lock;
     41
     42    int16_t cpu_ticks_enabled;
     43
     44    /* Conversion factor from emulated instructions to virtual clock ticks.  */
     45    int16_t icount_time_shift;
     46    /* Icount delta used for shift auto adjust. */
     47    int64_t last_delta;
     48
     49    /* Compensate for varying guest execution speed.  */
     50    aligned_int64_t qemu_icount_bias;
     51
     52    int64_t vm_clock_warp_start;
     53    int64_t cpu_clock_offset;
     54
     55    /* Only written by TCG thread */
     56    int64_t qemu_icount;
     57
     58    /* for adjusting icount */
     59    QEMUTimer *icount_rt_timer;
     60    QEMUTimer *icount_vm_timer;
     61    QEMUTimer *icount_warp_timer;
     62} TimersState;
     63
     64extern TimersState timers_state;
     65
     66/*
     67 * icount needs this internal from cpu-timers when adjusting the icount shift.
     68 */
     69int64_t cpu_get_clock_locked(void);
     70
     71#endif /* TIMERS_STATE_H */