qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
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machine.c (4683B)

      1 /*
      2  * OpenRISC Machine
      3  *
      4  * Copyright (c) 2011-2012 Jia Liu <proljc@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 <http://www.gnu.org/licenses/>.
     18  */
     19 
     20 #include "qemu/osdep.h"
     21 #include "cpu.h"
     22 #include "migration/cpu.h"
     23 
     24 static const VMStateDescription vmstate_tlb_entry = {
     25     .name = "tlb_entry",
     26     .version_id = 1,
     27     .minimum_version_id = 1,
     28     .fields = (VMStateField[]) {
     29         VMSTATE_UINTTL(mr, OpenRISCTLBEntry),
     30         VMSTATE_UINTTL(tr, OpenRISCTLBEntry),
     31         VMSTATE_END_OF_LIST()
     32     }
     33 };
     34 
     35 static const VMStateDescription vmstate_cpu_tlb = {
     36     .name = "cpu_tlb",
     37     .version_id = 2,
     38     .minimum_version_id = 2,
     39     .fields = (VMStateField[]) {
     40         VMSTATE_STRUCT_ARRAY(itlb, CPUOpenRISCTLBContext, TLB_SIZE, 0,
     41                              vmstate_tlb_entry, OpenRISCTLBEntry),
     42         VMSTATE_STRUCT_ARRAY(dtlb, CPUOpenRISCTLBContext, TLB_SIZE, 0,
     43                              vmstate_tlb_entry, OpenRISCTLBEntry),
     44         VMSTATE_END_OF_LIST()
     45     }
     46 };
     47 
     48 static int get_sr(QEMUFile *f, void *opaque, size_t size,
     49                   const VMStateField *field)
     50 {
     51     CPUOpenRISCState *env = opaque;
     52     cpu_set_sr(env, qemu_get_be32(f));
     53     return 0;
     54 }
     55 
     56 static int put_sr(QEMUFile *f, void *opaque, size_t size,
     57                   const VMStateField *field, JSONWriter *vmdesc)
     58 {
     59     CPUOpenRISCState *env = opaque;
     60     qemu_put_be32(f, cpu_get_sr(env));
     61     return 0;
     62 }
     63 
     64 static const VMStateInfo vmstate_sr = {
     65     .name = "sr",
     66     .get = get_sr,
     67     .put = put_sr,
     68 };
     69 
     70 static const VMStateDescription vmstate_env = {
     71     .name = "env",
     72     .version_id = 6,
     73     .minimum_version_id = 6,
     74     .fields = (VMStateField[]) {
     75         VMSTATE_UINTTL_2DARRAY(shadow_gpr, CPUOpenRISCState, 16, 32),
     76         VMSTATE_UINTTL(pc, CPUOpenRISCState),
     77         VMSTATE_UINTTL(ppc, CPUOpenRISCState),
     78         VMSTATE_UINTTL(jmp_pc, CPUOpenRISCState),
     79         VMSTATE_UINTTL(lock_addr, CPUOpenRISCState),
     80         VMSTATE_UINTTL(lock_value, CPUOpenRISCState),
     81         VMSTATE_UINTTL(epcr, CPUOpenRISCState),
     82         VMSTATE_UINTTL(eear, CPUOpenRISCState),
     83 
     84         /* Save the architecture value of the SR, not the internally
     85            expanded version.  Since this architecture value does not
     86            exist in memory to be stored, this requires a but of hoop
     87            jumping.  We want OFFSET=0 so that we effectively pass ENV
     88            to the helper functions, and we need to fill in the name by
     89            hand since there's no field of that name.  */
     90         {
     91             .name = "sr",
     92             .version_id = 0,
     93             .size = sizeof(uint32_t),
     94             .info = &vmstate_sr,
     95             .flags = VMS_SINGLE,
     96             .offset = 0
     97         },
     98 
     99         VMSTATE_UINT32(vr, CPUOpenRISCState),
    100         VMSTATE_UINT32(upr, CPUOpenRISCState),
    101         VMSTATE_UINT32(cpucfgr, CPUOpenRISCState),
    102         VMSTATE_UINT32(dmmucfgr, CPUOpenRISCState),
    103         VMSTATE_UINT32(immucfgr, CPUOpenRISCState),
    104         VMSTATE_UINT32(evbar, CPUOpenRISCState),
    105         VMSTATE_UINT32(pmr, CPUOpenRISCState),
    106         VMSTATE_UINT32(esr, CPUOpenRISCState),
    107         VMSTATE_UINT32(fpcsr, CPUOpenRISCState),
    108         VMSTATE_UINT64(mac, CPUOpenRISCState),
    109 
    110         VMSTATE_STRUCT(tlb, CPUOpenRISCState, 1,
    111                        vmstate_cpu_tlb, CPUOpenRISCTLBContext),
    112 
    113         VMSTATE_TIMER_PTR(timer, CPUOpenRISCState),
    114         VMSTATE_UINT32(ttmr, CPUOpenRISCState),
    115 
    116         VMSTATE_UINT32(picmr, CPUOpenRISCState),
    117         VMSTATE_UINT32(picsr, CPUOpenRISCState),
    118 
    119         VMSTATE_END_OF_LIST()
    120     }
    121 };
    122 
    123 static int cpu_post_load(void *opaque, int version_id)
    124 {
    125     OpenRISCCPU *cpu = opaque;
    126     CPUOpenRISCState *env = &cpu->env;
    127 
    128     /* Update env->fp_status to match env->fpcsr.  */
    129     cpu_set_fpcsr(env, env->fpcsr);
    130     return 0;
    131 }
    132 
    133 const VMStateDescription vmstate_openrisc_cpu = {
    134     .name = "cpu",
    135     .version_id = 1,
    136     .minimum_version_id = 1,
    137     .post_load = cpu_post_load,
    138     .fields = (VMStateField[]) {
    139         VMSTATE_CPU(),
    140         VMSTATE_STRUCT(env, OpenRISCCPU, 1, vmstate_env, CPUOpenRISCState),
    141         VMSTATE_END_OF_LIST()
    142     }
    143 };