source: rtems-tools/tester/covoar/CoverageMapBase.cc @ f9a4b2c

5
Last change on this file since f9a4b2c was cb018bc, checked in by Hermann Felbinger <hermann19829@…>, on 08/26/17 at 08:15:53

covoar: Add information to improve diagnostics.
  • Property mode set to 100644
File size: 8.0 KB
Line 
1
2/*! @file CoverageMapBase.cc
3 *  @brief CoverageMapBase Implementation
4 *
5 *  This file contains the implementation of the functions
6 *  which provide a base level of functionality of a CoverageMap.
7 */
8
9#include <libgen.h>
10#include <limits.h>
11#include <stdio.h>
12#include <stdlib.h>
13
14#include "CoverageMapBase.h"
15
16namespace Coverage {
17
18  CoverageMapBase::CoverageMapBase(
19    const std::string& exefileName,
20    uint32_t           low,
21    uint32_t           high
22  )
23  {
24    uint32_t       a;
25    AddressRange_t range;
26
27    range.fileName    = exefileName;
28    range.lowAddress  = low;
29    range.highAddress = high;
30    RangeList.push_back( range );
31
32    Size = high - low + 1;
33
34    Info = new perAddressInfo_t[ Size ];
35
36    for (a=0; a<Size; a++) {
37
38      perAddressInfo_t *i = &Info[ a ];
39
40      i->isStartOfInstruction = false;
41      i->wasExecuted          = 0;
42      i->isBranch             = false;
43      i->isNop                = false;
44      i->wasTaken             = 0;
45      i->wasNotTaken          = 0;
46    }
47  }
48
49  CoverageMapBase::~CoverageMapBase()
50  {
51    if (Info)
52      delete Info;
53  }
54 
55  void  CoverageMapBase::Add( uint32_t low, uint32_t high )
56  {
57    AddressRange_t range;
58
59    range.lowAddress  = low;
60    range.highAddress = high;
61    RangeList.push_back( range );
62  }
63 
64  bool CoverageMapBase::determineOffset(
65    uint32_t  address,
66    uint32_t *offset
67  )const
68  {
69    AddressRange::const_iterator  itr;
70
71    for ( itr = RangeList.begin(); itr != RangeList.end(); itr++ ) {
72      if ((address >= itr->lowAddress) && (address <= itr->highAddress)){
73        *offset = address - itr->lowAddress;
74        return true;
75      }
76    }
77    *offset = 0;
78    return false;
79  }
80
81
82  void CoverageMapBase::dump( void ) const {
83
84    uint32_t          a;
85    perAddressInfo_t* entry;
86
87    fprintf( stderr, "Coverage Map Contents:\n" );
88
89    /*
90     * XXX - Dump is only marking the first Address Range.
91     */
92
93    for (a = 0; a < Size; a++) {
94
95      entry = &Info[ a ];
96
97      fprintf(
98        stderr,
99        "0x%x - isStartOfInstruction = %s, wasExecuted = %s\n",
100        a + RangeList.front().lowAddress,
101        entry->isStartOfInstruction ? "TRUE" : "FALSE",
102        entry->wasExecuted ? "TRUE" : "FALSE"
103      );
104      fprintf(
105        stderr,
106        "           isBranch = %s, wasTaken = %s, wasNotTaken = %s\n",
107        entry->isBranch ? "TRUE" : "FALSE",
108        entry->wasTaken ? "TRUE" : "FALSE",
109        entry->wasNotTaken ? "TRUE" : "FALSE"
110      );
111    }
112  }
113
114  bool CoverageMapBase::getBeginningOfInstruction(
115    uint32_t  address,
116    uint32_t* beginning
117  ) const
118  {
119    bool           status = false;
120    uint32_t       start;
121    AddressRange_t range;
122
123
124    status = getRange( address, &range );
125    if ( status != true )
126      return status;
127
128    start = address;
129
130    while (start >= range.lowAddress ) {
131      if (Info[ start - range.lowAddress ].isStartOfInstruction) {
132        *beginning = start;
133        status = true;
134        break;
135      }
136      else
137        start--;
138    }
139
140    return status;
141  }
142
143  int32_t CoverageMapBase::getFirstLowAddress() const
144  {
145    return RangeList.front().lowAddress;
146  }
147
148  bool CoverageMapBase::getRange( uint32_t address, AddressRange_t *range ) const
149  {
150    AddressRange::const_iterator  itr;
151
152    for ( itr = RangeList.begin(); itr != RangeList.end(); itr++ ) {
153      if ((address >= itr->lowAddress) && (address <= itr->highAddress)){
154        range->lowAddress = itr->lowAddress;
155        range->highAddress = itr->highAddress;
156        return true;
157      }
158    }
159
160    range->lowAddress  = 0;
161    range->highAddress = 0;
162
163    return false;
164
165  }
166
167  uint32_t CoverageMapBase::getSize() const
168  {
169    return Size;
170  }
171
172  void CoverageMapBase::setIsStartOfInstruction(
173    uint32_t    address
174  )
175  {
176    uint32_t offset;
177 
178    if (determineOffset( address, &offset ) != true)
179      return;
180
181    Info[ offset ].isStartOfInstruction = true;
182  }
183
184  bool CoverageMapBase::isStartOfInstruction( uint32_t address ) const
185  {
186    uint32_t offset;
187 
188    if (determineOffset( address, &offset ) != true)
189      return false;
190
191    return Info[ offset ].isStartOfInstruction;
192  }
193
194  void CoverageMapBase::setWasExecuted( uint32_t address )
195  {
196    uint32_t offset;
197 
198    if (determineOffset( address, &offset ) != true)
199      return;
200
201    Info[ offset ].wasExecuted += 1;
202  }
203
204  void CoverageMapBase::sumWasExecuted( uint32_t address, uint32_t addition)
205  {
206    uint32_t offset;
207 
208    if (determineOffset( address, &offset ) != true)
209      return;
210
211    Info[ offset ].wasExecuted += addition;
212  }
213
214  bool CoverageMapBase::wasExecuted( uint32_t address ) const
215  {
216    uint32_t offset;
217    bool     result;
218 
219    result = true;
220
221    if (determineOffset( address, &offset ) != true)
222      result = false;
223
224    if (Info[ offset ].wasExecuted <= 0)
225      result = false;
226
227    return result;
228  }
229
230  uint32_t CoverageMapBase::getWasExecuted( uint32_t address ) const
231  {
232    uint32_t offset;
233
234    if (determineOffset( address, &offset ) != true)
235      return 0;
236
237    return Info[ offset ].wasExecuted; 
238  }
239
240  void CoverageMapBase::setIsBranch(
241    uint32_t    address
242  )
243  {
244    uint32_t offset;
245 
246    if (determineOffset( address, &offset ) != true)
247      return;
248
249    Info[ offset ].isBranch = true;
250  }
251
252  bool CoverageMapBase::isNop( uint32_t address ) const
253  {
254    uint32_t offset;
255 
256    if (determineOffset( address, &offset ) != true)
257      return false;
258
259    return Info[ offset ].isNop;
260  }
261
262  void CoverageMapBase::setIsNop(
263    uint32_t    address
264  )
265  {
266    uint32_t offset;
267 
268    if (determineOffset( address, &offset ) != true)
269      return;
270
271    Info[ offset ].isNop = true;
272  }
273
274  bool CoverageMapBase::isBranch( uint32_t address ) const
275  {
276    uint32_t offset;
277 
278    if (determineOffset( address, &offset ) != true)
279      return false;
280
281    return Info[ offset ].isBranch;
282  }
283
284  void CoverageMapBase::setWasTaken(
285    uint32_t    address
286  )
287  {
288    uint32_t offset;
289 
290    if (determineOffset( address, &offset ) != true)
291      return;
292
293    Info[ offset ].wasTaken += 1;
294  }
295
296  void CoverageMapBase::setWasNotTaken(
297    uint32_t    address
298  )
299  {
300    uint32_t offset;
301 
302    if (determineOffset( address, &offset ) != true)
303      return;
304
305    Info[ offset ].wasNotTaken += 1;
306  }
307
308  bool CoverageMapBase::wasAlwaysTaken( uint32_t address ) const
309  {
310    uint32_t offset;
311 
312    if (determineOffset( address, &offset ) != true)
313      return false;
314
315    return (Info[ offset ].wasTaken &&
316            !Info[ offset ].wasNotTaken);
317  }
318
319  bool CoverageMapBase::wasNeverTaken( uint32_t address ) const
320  {
321    uint32_t offset;
322 
323    if (determineOffset( address, &offset ) != true)
324      return false;
325
326    return (!Info[ offset ].wasTaken &&
327            Info[ offset ].wasNotTaken);
328  }
329
330  bool CoverageMapBase::wasNotTaken( uint32_t address ) const
331  {
332            uint32_t offset;
333            bool     result;
334
335            result = true;
336
337            if (determineOffset( address, &offset ) != true)
338              result = false;
339
340            if (Info[ offset ].wasNotTaken <= 0)
341              result = false;
342
343            return result;
344  }
345
346  void CoverageMapBase::sumWasNotTaken( uint32_t address, uint32_t addition)
347  {
348    uint32_t offset;
349
350    if (determineOffset( address, &offset ) != true)
351      return;
352
353    Info[ offset ].wasNotTaken += addition;
354  }
355
356  uint32_t CoverageMapBase::getWasNotTaken( uint32_t address ) const
357  {
358    uint32_t offset;
359
360    if (determineOffset( address, &offset ) != true)
361      return 0;
362
363    return Info[ offset ].wasNotTaken;
364  }
365
366  bool CoverageMapBase::wasTaken( uint32_t address ) const
367  {
368    uint32_t offset;
369    bool     result;
370
371    result = true;
372 
373    if (determineOffset( address, &offset ) != true)
374      result = false;
375
376    if (Info[ offset ].wasTaken <= 0)
377      result = false;
378
379    return result;
380  }
381
382  void CoverageMapBase::sumWasTaken( uint32_t address, uint32_t addition)
383  {
384    uint32_t offset;
385
386    if (determineOffset( address, &offset ) != true)
387      return;
388
389    Info[ offset ].wasTaken += addition;
390  }
391
392  uint32_t CoverageMapBase::getWasTaken( uint32_t address ) const
393  {
394    uint32_t offset;
395
396    if (determineOffset( address, &offset ) != true)
397      return 0;
398
399    return Info[ offset ].wasTaken;
400  }
401}
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