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

addr.c (1839B)

      1/*
      2 * QEMU MIPS address translation support
      3 *
      4 * Permission is hereby granted, free of charge, to any person obtaining a copy
      5 * of this software and associated documentation files (the "Software"), to deal
      6 * in the Software without restriction, including without limitation the rights
      7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
      8 * copies of the Software, and to permit persons to whom the Software is
      9 * furnished to do so, subject to the following conditions:
     10 *
     11 * The above copyright notice and this permission notice shall be included in
     12 * all copies or substantial portions of the Software.
     13 *
     14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     20 * THE SOFTWARE.
     21 */
     22
     23#include "qemu/osdep.h"
     24#include "cpu.h"
     25
     26static int mips_um_ksegs;
     27
     28uint64_t cpu_mips_kseg0_to_phys(void *opaque, uint64_t addr)
     29{
     30    return addr & 0x1fffffffll;
     31}
     32
     33uint64_t cpu_mips_phys_to_kseg0(void *opaque, uint64_t addr)
     34{
     35    return addr | ~0x7fffffffll;
     36}
     37
     38uint64_t cpu_mips_kvm_um_phys_to_kseg0(void *opaque, uint64_t addr)
     39{
     40    return addr | 0x40000000ll;
     41}
     42
     43uint64_t cpu_mips_kseg1_to_phys(void *opaque, uint64_t addr)
     44{
     45    return addr & 0x1fffffffll;
     46}
     47
     48uint64_t cpu_mips_phys_to_kseg1(void *opaque, uint64_t addr)
     49{
     50    return (addr & 0x1fffffffll) | 0xffffffffa0000000ll;
     51}
     52
     53bool mips_um_ksegs_enabled(void)
     54{
     55    return mips_um_ksegs;
     56}
     57
     58void mips_um_ksegs_enable(void)
     59{
     60    mips_um_ksegs = 1;
     61}