target/hppa/machine.c

   1 /*
   2  *  HPPA interrupt helper routines
   3  *
   4  *  Copyright (c) 2017 Richard Henderson
   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 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 "hw/hw.h"
  23 #include "hw/boards.h"
  24 #include "migration/cpu.h"
  25
  26 #if TARGET_REGISTER_BITS == 64
  27 #define qemu_put_betr   qemu_put_be64
  28 #define qemu_get_betr   qemu_get_be64
  29 #define VMSTATE_UINTTL_V(_f, _s, _v) \
  30     VMSTATE_UINT64_V(_f, _s, _v)
  31 #define VMSTATE_UINTTL_ARRAY_V(_f, _s, _n, _v) \
  32     VMSTATE_UINT64_ARRAY_V(_f, _s, _n, _v)
  33 #else
  34 #define qemu_put_betr   qemu_put_be32
  35 #define qemu_get_betr   qemu_get_be32
  36 #define VMSTATE_UINTTR_V(_f, _s, _v) \
  37     VMSTATE_UINT32_V(_f, _s, _v)
  38 #define VMSTATE_UINTTR_ARRAY_V(_f, _s, _n, _v) \
  39     VMSTATE_UINT32_ARRAY_V(_f, _s, _n, _v)
  40 #endif
  41
  42 #define VMSTATE_UINTTR(_f, _s) \
  43     VMSTATE_UINTTR_V(_f, _s, 0)
  44 #define VMSTATE_UINTTR_ARRAY(_f, _s, _n) \
  45     VMSTATE_UINTTR_ARRAY_V(_f, _s, _n, 0)
  46
  47
  48 static int get_psw(QEMUFile *f, void *opaque, size_t size,
  49                    const VMStateField *field)
  50 {
  51     CPUHPPAState *env = opaque;
  52     cpu_hppa_put_psw(env, qemu_get_betr(f));
  53     return 0;
  54 }
  55
  56 static int put_psw(QEMUFile *f, void *opaque, size_t size,
  57                    const VMStateField *field, QJSON *vmdesc)
  58 {
  59     CPUHPPAState *env = opaque;
  60     qemu_put_betr(f, cpu_hppa_get_psw(env));
  61     return 0;
  62 }
  63
  64 static const VMStateInfo vmstate_psw = {
  65     .name = "psw",
  66     .get = get_psw,
  67     .put = put_psw,
  68 };
  69
  70 /* FIXME: Use the PA2.0 format, which is a superset of the PA1.1 format.  */
  71 static int get_tlb(QEMUFile *f, void *opaque, size_t size,
  72                    const VMStateField *field)
  73 {
  74     hppa_tlb_entry *ent = opaque;
  75     uint32_t val;
  76
  77     memset(ent, 0, sizeof(*ent));
  78
  79     ent->va_b = qemu_get_be64(f);
  80     ent->pa = qemu_get_betr(f);
  81     val = qemu_get_be32(f);
  82
  83     ent->entry_valid = extract32(val, 0, 1);
  84     ent->access_id = extract32(val, 1, 18);
  85     ent->u = extract32(val, 19, 1);
  86     ent->ar_pl2 = extract32(val, 20, 2);
  87     ent->ar_pl1 = extract32(val, 22, 2);
  88     ent->ar_type = extract32(val, 24, 3);
  89     ent->b = extract32(val, 27, 1);
  90     ent->d = extract32(val, 28, 1);
  91     ent->t = extract32(val, 29, 1);
  92
  93     ent->va_e = ent->va_b + TARGET_PAGE_SIZE - 1;
  94     return 0;
  95 }
  96
  97 static int put_tlb(QEMUFile *f, void *opaque, size_t size,
  98                    const VMStateField *field, QJSON *vmdesc)
  99 {
 100     hppa_tlb_entry *ent = opaque;
 101     uint32_t val = 0;
 102
 103     if (ent->entry_valid) {
 104         val = 1;
 105         val = deposit32(val, 1, 18, ent->access_id);
 106         val = deposit32(val, 19, 1, ent->u);
 107         val = deposit32(val, 20, 2, ent->ar_pl2);
 108         val = deposit32(val, 22, 2, ent->ar_pl1);
 109         val = deposit32(val, 24, 3, ent->ar_type);
 110         val = deposit32(val, 27, 1, ent->b);
 111         val = deposit32(val, 28, 1, ent->d);
 112         val = deposit32(val, 29, 1, ent->t);
 113     }
 114
 115     qemu_put_be64(f, ent->va_b);
 116     qemu_put_betr(f, ent->pa);
 117     qemu_put_be32(f, val);
 118     return 0;
 119 }
 120
 121 static const VMStateInfo vmstate_tlb = {
 122     .name = "tlb entry",
 123     .get = get_tlb,
 124     .put = put_tlb,
 125 };
 126
 127 static VMStateField vmstate_env_fields[] = {
 128     VMSTATE_UINTTR_ARRAY(gr, CPUHPPAState, 32),
 129     VMSTATE_UINT64_ARRAY(fr, CPUHPPAState, 32),
 130     VMSTATE_UINT64_ARRAY(sr, CPUHPPAState, 8),
 131     VMSTATE_UINTTR_ARRAY(cr, CPUHPPAState, 32),
 132     VMSTATE_UINTTR_ARRAY(cr_back, CPUHPPAState, 2),
 133     VMSTATE_UINTTR_ARRAY(shadow, CPUHPPAState, 7),
 134
 135     /* Save the architecture value of the psw, not the internally
 136        expanded version.  Since this architecture value does not
 137        exist in memory to be stored, this requires a but of hoop
 138        jumping.  We want OFFSET=0 so that we effectively pass ENV
 139        to the helper functions, and we need to fill in the name by
 140        hand since there's no field of that name.  */
 141     {
 142         .name = "psw",
 143         .version_id = 0,
 144         .size = sizeof(uint64_t),
 145         .info = &vmstate_psw,
 146         .flags = VMS_SINGLE,
 147         .offset = 0
 148     },
 149
 150     VMSTATE_UINTTR(iaoq_f, CPUHPPAState),
 151     VMSTATE_UINTTR(iaoq_b, CPUHPPAState),
 152     VMSTATE_UINT64(iasq_f, CPUHPPAState),
 153     VMSTATE_UINT64(iasq_b, CPUHPPAState),
 154
 155     VMSTATE_UINT32(fr0_shadow, CPUHPPAState),
 156
 157     VMSTATE_ARRAY(tlb, CPUHPPAState, ARRAY_SIZE(((CPUHPPAState *)0)->tlb),
 158                   0, vmstate_tlb, hppa_tlb_entry),
 159     VMSTATE_UINT32(tlb_last, CPUHPPAState),
 160
 161     VMSTATE_END_OF_LIST()
 162 };
 163
 164 static const VMStateDescription vmstate_env = {
 165     .name = "env",
 166     .version_id = 1,
 167     .minimum_version_id = 1,
 168     .fields = vmstate_env_fields,
 169 };
 170
 171 static VMStateField vmstate_cpu_fields[] = {
 172     VMSTATE_CPU(),
 173     VMSTATE_STRUCT(env, HPPACPU, 1, vmstate_env, CPUHPPAState),
 174     VMSTATE_END_OF_LIST()
 175 };
 176
 177 const VMStateDescription vmstate_hppa_cpu = {
 178     .name = "cpu",
 179     .version_id = 1,
 180     .minimum_version_id = 1,
 181     .fields = vmstate_cpu_fields,
 182 };