summaryrefslogtreecommitdiff
path: root/arch/mips/isa_traits.cc
blob: d23cdf367802eb9a505c363e6fab2809a1b9338f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
/*
 * Copyright (c) 2003-2005 The Regents of The University of Michigan
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "arch/mips/isa_traits.hh"
#include "config/full_system.hh"
#include "cpu/static_inst.hh"
#include "sim/serialize.hh"

using namespace MipsISA;

uint64_t
MipsISA::convert_and_round(uint64_t fp_val, ConvertType cvt_type, int rnd_mode)
{
    uint64_t ret_val = 0;

    switch (cvt_type)
    {
      case SINGLE_TO_DOUBLE:
        break;

      case SINGLE_TO_WORD:
        break;

      case SINGLE_TO_LONG:
        break;

      case DOUBLE_TO_SINGLE:

        break;

      case LONG_TO_SINGLE:
        break;

      case WORD_TO_SINGLE:
        break;

      default:
        panic("Invalid Floating Point Conversion type being used.\n");
    }

    return ret_val;
}

void
MipsISA::copyRegs(ExecContext *src, ExecContext *dest)
{
    /*fpcr = xc->readMiscReg(MipsISA::Fpcr_DepTag);
    uniq = xc->readMiscReg(MipsISA::Uniq_DepTag);
    lock_flag = xc->readMiscReg(MipsISA::Lock_Flag_DepTag);
    lock_addr = xc->readMiscReg(MipsISA::Lock_Addr_DepTag);

#if FULL_SYSTEM
    copyIprs(xc);
    #endif*/
}

void
MipsISA::MiscRegFile::copyMiscRegs(ExecContext *xc)
{
    /*fpcr = xc->readMiscReg(MipsISA::Fpcr_DepTag);
    uniq = xc->readMiscReg(MipsISA::Uniq_DepTag);
    lock_flag = xc->readMiscReg(MipsISA::Lock_Flag_DepTag);
    lock_addr = xc->readMiscReg(MipsISA::Lock_Addr_DepTag);

#if FULL_SYSTEM
    copyIprs(xc);
    #endif*/
}


void MipsISA::RegFile::coldReset()
{
    //CP0 Random Reg:
    //Randomly generated index into the TLB array
    /*miscRegs[Random] = 0x0000003f;

    //CP0 Wired Reg.
    miscRegs[Wired] = 0x0000000;

   //CP0 HWRENA
    miscRegs[HWRena] = 0x0000000;

    //CP0 Status Reg.
    miscRegs[Status] = 0x0400004;

   //CP0 INTCNTL
    miscRegs[IntCtl] = 0xfc00000;

   //CP0 SRSCNTL
    miscRegs[SRSCtl] = 0x0c00000;

   //CP0 SRSMAP
    miscRegs[SRSMap] = 0x0000000;

   //CP0 Cause
    miscRegs[Cause] = 0x0000000;

    //CP0 Processor ID
    miscRegs[PrId] = 0x0019300;

    //CP0 EBASE
    miscRegs[EBase] = 0x8000000;

    //CP0 Config Reg.
    miscRegs[Config] = 0x80040482;

    //CP0 Config 1 Reg.
    miscRegs[Config1] = 0xfee3719e;

    //CP0 Config 2 Reg.
    miscRegs[Config2] = 0x8000000;

    //CP0 Config 3 Reg.
    miscRegs[Config3] = 0x0000020;

    //CP0 Config 7 Reg.
    miscRegs[Config7] = 0x0000000;

   //CP0 Debug
    miscRegs[Debug] = 0x0201800;

   //CP0 PERFCNTL1
    miscRegs[PerfCnt0] = 0x0000000;

   //CP0 PERFCNTL2
   miscRegs[PerfCnt1] = 0x0000000;*/

}

void RegFile::createCP0Regs()
{
//Resize Coprocessor Register Banks to
// the number specified in MIPS32K VOL.III
// Chapter 8
    /*
    //Cop-0 Regs. Bank 0: Index,
    miscRegs[0].resize(4);

    //Cop-0 Regs. Bank 1:
    miscRegs[1].resize(8);

    //Cop-0 Regs. Bank 2:
    miscRegs[2].resize(8);

    //Cop-0 Regs. Bank 3:
    miscRegs[3].resize(1);

    //Cop-0 Regs. Bank 4:
    miscRegs[4].resize(2);

    //Cop-0 Regs. Bank 5:
    miscRegs[5].resize(2);

    //Cop-0 Regs. Bank 6:
    miscRegs[6].resize(6);

    //Cop-0 Regs. Bank 7:
    miscRegs[7].resize(1);

    //Cop-0 Regs. Bank 8:
    miscRegs[8].resize(1);

    //Cop-0 Regs. Bank 9:
    miscRegs[9].resize(1);

    //Cop-0 Regs. Bank 10:
    miscRegs[10].resize(1);

    //Cop-0 Regs. Bank 11:
    miscRegs[11].resize(1);

    //Cop-0 Regs. Bank 12:
    miscRegs[12].resize(4);

    //Cop-0 Regs. Bank 13:
    miscRegs[13].resize(1);

    //Cop-0 Regs. Bank 14:
    miscRegs[14].resize(1);

    //Cop-0 Regs. Bank 15:
    miscRegs[15].resize(2);

    //Cop-0 Regs. Bank 16:
    miscRegs[16].resize(4);

    //Cop-0 Regs. Bank 17:
    miscRegs[17].resize(1);

    //Cop-0 Regs. Bank 18:
    miscRegs[18].resize(8);

    //Cop-0 Regs. Bank 19:
    miscRegs[19].resize(8);

    //Cop-0 Regs. Bank 20:
    miscRegs[20].resize(1);
      case PerfCnt0: panic("Accessing Unimplemented CP0 Register"); break;
      case PerfCnt1: panic("Accessing Unimplemented CP0 Register"); break;
      case PerfCnt2: panic("Accessing Unimplemented CP0 Register"); break;
      case PerfCnt3: panic("Accessing Unimplemented CP0 Register"); break;

    //Cop-0 Regs. Bank 21:
    //miscRegs[21].resize(1);
    //Reserved for future extensions

    //Cop-0 Regs. Bank 22:
    //miscRegs[22].resize(4);
    //Available for implementation dependent use

    //Cop-0 Regs. Bank 23:
    miscRegs[23].resize(5);

    //Cop-0 Regs. Bank 24:
    miscRegs[24].resize(1);

    //Cop-0 Regs. Bank 25:
    miscRegs[25].resize(8);

    //Cop-0 Regs. Bank 26:
    miscRegs[26].resize(1);

    //Cop-0 Regs. Bank 27:
    miscRegs[27].resize(4);

    //Cop-0 Regs. Bank 28:
    miscRegs[28].resize(8);

    //Cop-0 Regs. Bank 29:
    miscRegs[29].resize(8);

    //Cop-0 Regs. Bank 30:
    miscRegs[30].resize(1);

    //Cop-0 Regs. Bank 31:
    miscRegs[31].resize(1);*/

}


const Addr MipsISA::PageShift = 13;
const Addr MipsISA::PageBytes = ULL(1) << PageShift;
const Addr MipsISA::PageMask = ~(PageBytes - 1);
const Addr MipsISA::PageOffset = PageBytes - 1;

#if FULL_SYSTEM

////////////////////////////////////////////////////////////////////////
//
//  Translation stuff
//

const Addr MipsISA::PteShift = 3;
const Addr MipsISA::NPtePageShift = PageShift - PteShift;
const Addr MipsISA::NPtePage = ULL(1) << NPtePageShift;
const Addr MipsISA::PteMask = NPtePage - 1;

// User Virtual
const Addr MipsISA::USegBase = ULL(0x0);
const Addr MipsISA::USegEnd = ULL(0x000003ffffffffff);

// Kernel Direct Mapped
const Addr MipsISA::K0SegBase = ULL(0xfffffc0000000000);
const Addr MipsISA::K0SegEnd = ULL(0xfffffdffffffffff);

// Kernel Virtual
const Addr MipsISA::K1SegBase = ULL(0xfffffe0000000000);
const Addr MipsISA::K1SegEnd = ULL(0xffffffffffffffff);

#endif

// Mips UNOP (sll r0,r0,r0)
const MachInst MipsISA::NoopMachInst = 0x00000000;

static inline Addr
TruncPage(Addr addr)
{ return addr & ~(MipsISA::PageBytes - 1); }

static inline Addr
RoundPage(Addr addr)
{ return (addr + MipsISA::PageBytes - 1) & ~(MipsISA::PageBytes - 1); }

void
IntRegFile::serialize(std::ostream &os)
{
    SERIALIZE_ARRAY(regs, NumIntRegs);
}

void
IntRegFile::unserialize(Checkpoint *cp, const std::string &section)
{
    UNSERIALIZE_ARRAY(regs, NumIntRegs);
}

void
RegFile::serialize(std::ostream &os)
{
    intRegFile.serialize(os);
    //SERIALIZE_ARRAY(floatRegFile.q, NumFloatRegs);
    //SERIALIZE_SCALAR(miscRegs.fpcr);
    //SERIALIZE_SCALAR(miscRegs.uniq);
    //SERIALIZE_SCALAR(miscRegs.lock_flag);
    //SERIALIZE_SCALAR(miscRegs.lock_addr);
    SERIALIZE_SCALAR(pc);
    SERIALIZE_SCALAR(npc);
    SERIALIZE_SCALAR(nnpc);
#if FULL_SYSTEM
    SERIALIZE_ARRAY(palregs, NumIntRegs);
    SERIALIZE_ARRAY(ipr, NumInternalProcRegs);
    SERIALIZE_SCALAR(intrflag);
    SERIALIZE_SCALAR(pal_shadow);
#endif
}


void
RegFile::unserialize(Checkpoint *cp, const std::string &section)
{
    intRegFile.unserialize(cp, section);
    //UNSERIALIZE_ARRAY(floatRegFile.q, NumFloatRegs);
    //UNSERIALIZE_SCALAR(miscRegs.fpcr);
    //UNSERIALIZE_SCALAR(miscRegs.uniq);
    //UNSERIALIZE_SCALAR(miscRegs.lock_flag);
    //UNSERIALIZE_SCALAR(miscRegs.lock_addr);
    UNSERIALIZE_SCALAR(pc);
    UNSERIALIZE_SCALAR(npc);
    UNSERIALIZE_SCALAR(nnpc);
#if FULL_SYSTEM
    UNSERIALIZE_ARRAY(palregs, NumIntRegs);
    UNSERIALIZE_ARRAY(ipr, NumInternalProcRegs);
    UNSERIALIZE_SCALAR(intrflag);
    UNSERIALIZE_SCALAR(pal_shadow);
#endif
}


#if FULL_SYSTEM
void
PTE::serialize(std::ostream &os)
{
    SERIALIZE_SCALAR(tag);
    SERIALIZE_SCALAR(ppn);
    SERIALIZE_SCALAR(xre);
    SERIALIZE_SCALAR(xwe);
    SERIALIZE_SCALAR(asn);
    SERIALIZE_SCALAR(asma);
    SERIALIZE_SCALAR(fonr);
    SERIALIZE_SCALAR(fonw);
    SERIALIZE_SCALAR(valid);
}


void
PTE::unserialize(Checkpoint *cp, const std::string &section)
{
    UNSERIALIZE_SCALAR(tag);
    UNSERIALIZE_SCALAR(ppn);
    UNSERIALIZE_SCALAR(xre);
    UNSERIALIZE_SCALAR(xwe);
    UNSERIALIZE_SCALAR(asn);
    UNSERIALIZE_SCALAR(asma);
    UNSERIALIZE_SCALAR(fonr);
    UNSERIALIZE_SCALAR(fonw);
    UNSERIALIZE_SCALAR(valid);
}

#endif //FULL_SYSTEM