| 1 | /* |
| 2 | * QEMU AVR CPU |
| 3 | * |
| 4 | * Copyright (c) 2016-2020 Michael Rolnik |
| 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 |
| 18 | * <http://www.gnu.org/licenses/lgpl-2.1.html> |
| 19 | */ |
| 20 | |
| 21 | #include "qemu/osdep.h" |
| 22 | #include "cpu.h" |
| 23 | #include "migration/qemu-file-types.h" |
| 24 | #include "migration/vmstate.h" |
| 25 | |
| 26 | static int get_sreg(QEMUFile *f, void *opaque, size_t size, |
| 27 | const VMStateField *field) |
| 28 | { |
| 29 | CPUAVRState *env = opaque; |
| 30 | uint8_t sreg; |
| 31 | |
| 32 | sreg = qemu_get_byte(f); |
| 33 | cpu_set_sreg(env, sreg); |
| 34 | return 0; |
| 35 | } |
| 36 | |
| 37 | static int put_sreg(QEMUFile *f, void *opaque, size_t size, |
| 38 | const VMStateField *field, JSONWriter *vmdesc) |
| 39 | { |
| 40 | CPUAVRState *env = opaque; |
| 41 | uint8_t sreg = cpu_get_sreg(env); |
| 42 | |
| 43 | qemu_put_byte(f, sreg); |
| 44 | return 0; |
| 45 | } |
| 46 | |
| 47 | static const VMStateInfo vms_sreg = { |
| 48 | .name = "sreg", |
| 49 | .get = get_sreg, |
| 50 | .put = put_sreg, |
| 51 | }; |
| 52 | |
| 53 | static int get_segment(QEMUFile *f, void *opaque, size_t size, |
| 54 | const VMStateField *field) |
| 55 | { |
| 56 | uint32_t *ramp = opaque; |
| 57 | uint8_t temp; |
| 58 | |
| 59 | temp = qemu_get_byte(f); |
| 60 | *ramp = ((uint32_t)temp) << 16; |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | static int put_segment(QEMUFile *f, void *opaque, size_t size, |
| 65 | const VMStateField *field, JSONWriter *vmdesc) |
| 66 | { |
| 67 | uint32_t *ramp = opaque; |
| 68 | uint8_t temp = *ramp >> 16; |
| 69 | |
| 70 | qemu_put_byte(f, temp); |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | static const VMStateInfo vms_rampD = { |
| 75 | .name = "rampD", |
| 76 | .get = get_segment, |
| 77 | .put = put_segment, |
| 78 | }; |
| 79 | static const VMStateInfo vms_rampX = { |
| 80 | .name = "rampX", |
| 81 | .get = get_segment, |
| 82 | .put = put_segment, |
| 83 | }; |
| 84 | static const VMStateInfo vms_rampY = { |
| 85 | .name = "rampY", |
| 86 | .get = get_segment, |
| 87 | .put = put_segment, |
| 88 | }; |
| 89 | static const VMStateInfo vms_rampZ = { |
| 90 | .name = "rampZ", |
| 91 | .get = get_segment, |
| 92 | .put = put_segment, |
| 93 | }; |
| 94 | static const VMStateInfo vms_eind = { |
| 95 | .name = "eind", |
| 96 | .get = get_segment, |
| 97 | .put = put_segment, |
| 98 | }; |
| 99 | |
| 100 | const VMStateDescription vms_avr_cpu = { |
| 101 | .name = "cpu", |
| 102 | .version_id = 1, |
| 103 | .minimum_version_id = 1, |
| 104 | .fields = (const VMStateField[]) { |
| 105 | VMSTATE_UINT32(env.pc_w, AVRCPU), |
| 106 | VMSTATE_UINT32(env.sp, AVRCPU), |
| 107 | VMSTATE_UINT32(env.skip, AVRCPU), |
| 108 | |
| 109 | VMSTATE_UINT32_ARRAY(env.r, AVRCPU, NUMBER_OF_CPU_REGISTERS), |
| 110 | |
| 111 | VMSTATE_SINGLE(env, AVRCPU, 0, vms_sreg, CPUAVRState), |
| 112 | VMSTATE_SINGLE(env.rampD, AVRCPU, 0, vms_rampD, uint32_t), |
| 113 | VMSTATE_SINGLE(env.rampX, AVRCPU, 0, vms_rampX, uint32_t), |
| 114 | VMSTATE_SINGLE(env.rampY, AVRCPU, 0, vms_rampY, uint32_t), |
| 115 | VMSTATE_SINGLE(env.rampZ, AVRCPU, 0, vms_rampZ, uint32_t), |
| 116 | VMSTATE_SINGLE(env.eind, AVRCPU, 0, vms_eind, uint32_t), |
| 117 | |
| 118 | VMSTATE_END_OF_LIST() |
| 119 | } |
| 120 | }; |