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1.1 root 1: //
2: // nono
1.1.1.3 root 3: // Copyright (C) 2020 nono project
4: // Licensed under nono-license.txt
1.1 root 5: //
6:
1.1.1.8 ! root 7: //
! 8: // デバイスの基本クラスなど
! 9: //
1.1 root 10:
1.1.1.8 ! root 11: #include "device.h"
! 12: #include "mpu.h"
! 13: #include "scheduler.h"
1.1 root 14:
15: //
16: // Device
17: //
18:
19: // コンストラクタ
1.1.1.7 root 20: Device::Device(const std::string& objname_)
21: : inherited(objname_)
1.1 root 22: {
23: }
24:
25: // デストラクタ
26: Device::~Device()
27: {
28: }
29:
30: bool
31: Device::Create()
32: {
33: return true;
34: }
35:
36: bool
37: Device::Init()
38: {
39: return true;
40: }
41:
42: bool
43: Device::Apply()
44: {
45: return true;
46: }
47:
1.1.1.8 ! root 48: void
! 49: Device::ResetHard(bool poweron)
1.1 root 50: {
51: }
52:
1.1.1.8 ! root 53: void
1.1 root 54: Device::PowerOff()
55: {
56: }
57:
1.1.1.8 ! root 58: // ログ表示。
! 59: // VM デバイスでは、仮想時間、PC、オブジェクト名を表示する。
1.1 root 60: void
1.1.1.8 ! root 61: Device::putlogn(const char *fmt, ...) const
1.1 root 62: {
1.1.1.8 ! root 63: char buf[1024];
! 64: va_list ap;
! 65: uint64 vt;
! 66: int len;
! 67:
! 68: vt = gScheduler->GetVirtTime();
! 69: len = snprintf(buf, sizeof(buf), "%4d.%03d'%03d'%03d %08x %s ",
! 70: (int)(vt / 1000 / 1000 / 1000),
! 71: (int)((vt / 1000 / 1000) % 1000),
! 72: (int)((vt / 1000) % 1000),
! 73: (int)(vt % 1000),
! 74: gMPU->GetPPC(),
! 75: GetName().c_str());
! 76:
! 77: va_start(ap, fmt);
! 78: vsnprintf(buf + len, sizeof(buf) - len, fmt, ap);
! 79: va_end(ap);
! 80:
! 81: WriteLog(buf);
1.1 root 82: }
83:
84:
85: //
86: // IODevice
87: //
88:
89: // コンストラクタ
1.1.1.7 root 90: IODevice::IODevice(const std::string& objname_)
91: : inherited(objname_)
1.1 root 92: {
93: devaddr = 0;
94: devlen = 0;
95: }
96:
97: // デストラクタ
98: IODevice::~IODevice()
99: {
100: }
101:
102: uint64
103: IODevice::Read8(uint32 addr)
104: {
105: return 0xff;
106: }
107:
108: uint64
109: IODevice::Read16(uint32 addr)
110: {
111: return (Read8(addr) << 8) | Read8(addr + 1);
112: }
113:
114: uint64
115: IODevice::Read32(uint32 addr)
116: {
117: return (Read16(addr) << 16) | Read16(addr + 2);
118: }
119:
120: uint64
121: IODevice::Write8(uint32 addr, uint32 data)
122: {
123: return 0;
124: }
125:
126: uint64
127: IODevice::Write16(uint32 addr, uint32 data)
128: {
129: int64 berr;
130:
1.1.1.2 root 131: berr = Write8(addr, data >> 8);
1.1 root 132: if (berr < 0)
133: return berr;
134: berr = Write8(addr + 1, data & 0xff);
135: if (berr < 0)
136: return berr;
137: return 0;
138: }
139:
140: uint64
141: IODevice::Write32(uint32 addr, uint32 data)
142: {
143: int64 berr;
144:
145: berr = Write16(addr, data >> 16);
146: if (berr < 0)
147: return berr;
148: berr = Write16(addr + 2, data & 0xffff);
149: if (berr < 0)
150: return berr;
151: return 0;
152: }
153:
154: uint64
155: IODevice::Peek8(uint32 addr)
156: {
1.1.1.2 root 157: return 0xff;
1.1 root 158: }
159:
160:
161: //
162: // バスエラー
163: //
164:
1.1.1.8 ! root 165: // グローバル参照用
! 166: BusErrDevice *gBusErr;
1.1.1.6 root 167:
1.1 root 168: // コンストラクタ
169: BusErrDevice::BusErrDevice()
1.1.1.7 root 170: : inherited("(BusErr)")
1.1 root 171: {
1.1.1.7 root 172: ClearAlias();
173: AddAlias("BusErr");
174:
1.1 root 175: devaddr = -1; // XXX どうしたもんか
176: }
177:
1.1.1.8 ! root 178: // デストラクタ
1.1 root 179: BusErrDevice::~BusErrDevice()
180: {
1.1.1.8 ! root 181: gBusErr = NULL;
1.1 root 182: }
183:
184: uint64
185: BusErrDevice::Read8(uint32 addr)
186: {
1.1.1.4 root 187: putlog(1, "$%08x.b", addr);
1.1 root 188: return (uint64)-1;
189: }
190:
191: uint64
192: BusErrDevice::Read16(uint32 addr)
193: {
1.1.1.4 root 194: putlog(1, "$%08x.w", addr);
1.1 root 195: return (uint64)-1;
196: }
197:
198: uint64
199: BusErrDevice::Read32(uint32 addr)
200: {
1.1.1.4 root 201: putlog(1, "$%08x.l", addr);
1.1 root 202: return (uint64)-1;
203: }
204:
205: uint64
206: BusErrDevice::Write8(uint32 addr, uint32 data)
207: {
1.1.1.4 root 208: putlog(1, "$%08x.b <- %02X", addr, data);
1.1 root 209: return (uint64)-1;
210: }
211:
212: uint64
213: BusErrDevice::Write16(uint32 addr, uint32 data)
214: {
1.1.1.4 root 215: putlog(1, "$%08x.w <- %04X", addr, data);
1.1 root 216: return (uint64)-1;
217: }
218:
219: uint64
220: BusErrDevice::Write32(uint32 addr, uint32 data)
221: {
1.1.1.4 root 222: putlog(1, "$%08x.l <- %08X", addr, data);
1.1 root 223: return (uint64)-1;
224: }
225:
226: uint64
227: BusErrDevice::Peek8(uint32 addr)
228: {
229: return (uint64)-1;
230: }
231:
232:
233: //
234: // 何もしないデバイス
235: //
236:
1.1.1.8 ! root 237: // グローバル参照用
! 238: NopIODevice *gNopIO;
1.1.1.5 root 239:
1.1 root 240: // コンストラクタ
1.1.1.7 root 241: NopIODevice::NopIODevice()
242: : inherited("(NopIO)")
1.1 root 243: {
1.1.1.7 root 244: ClearAlias();
245: AddAlias("NopIO");
1.1 root 246: }
247:
1.1.1.8 ! root 248: // デストラクタ
1.1.1.7 root 249: NopIODevice::~NopIODevice()
1.1 root 250: {
1.1.1.8 ! root 251: gNopIO = NULL;
1.1 root 252: }
253:
254: uint64
1.1.1.7 root 255: NopIODevice::Read8(uint32 addr)
1.1 root 256: {
1.1.1.5 root 257: putlog(1, "$%08x.b", addr);
1.1 root 258: return 0xff;
259: }
260:
261: uint64
1.1.1.7 root 262: NopIODevice::Read16(uint32 addr)
1.1.1.5 root 263: {
264: putlog(1, "$%08x.w", addr);
265: return 0xffff;
266: }
267:
268: uint64
1.1.1.7 root 269: NopIODevice::Read32(uint32 addr)
1.1.1.5 root 270: {
271: putlog(1, "$%08x.l", addr);
272: return 0xffffffff;
273: }
274:
275: uint64
1.1.1.7 root 276: NopIODevice::Write8(uint32 addr, uint32 data)
1.1 root 277: {
1.1.1.5 root 278: putlog(1, "$%08x.b <- $%02x", addr, data);
279: return 0;
280: }
281:
282: uint64
1.1.1.7 root 283: NopIODevice::Write16(uint32 addr, uint32 data)
1.1.1.5 root 284: {
285: putlog(1, "$%08x.w <- $%04x", addr, data);
286: return 0;
287: }
288:
289: uint64
1.1.1.7 root 290: NopIODevice::Write32(uint32 addr, uint32 data)
1.1.1.5 root 291: {
292: putlog(1, "$%08x.l <- $%08x", addr, data);
1.1 root 293: return 0;
294: }
295:
296: uint64
1.1.1.7 root 297: NopIODevice::Peek8(uint32 addr)
1.1 root 298: {
299: return 0xff;
300: }
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