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236
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1 // -*- C++ -*-
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2 //===----------------------------------------------------------------------===//
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3 //
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4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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5 // See https://llvm.org/LICENSE.txt for license information.
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6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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173
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10 // The other libunwind tests don't test internal interfaces, so the include path
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11 // is a little wonky.
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12 #include "../src/config.h"
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13
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14 // Only run this test under supported configurations.
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15
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221
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16 #if defined(_LIBUNWIND_USE_DL_ITERATE_PHDR) && \
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17 defined(_LIBUNWIND_USE_FRAME_HEADER_CACHE)
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173
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18
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19 #include <link.h>
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20 #include <stdio.h>
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21
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22 // This file defines several of the data structures needed here,
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23 // and includes FrameHeaderCache.hpp as well.
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24 #include "../src/AddressSpace.hpp"
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25
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26 #define kBaseAddr 0xFFF000
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221
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27 #define kTextSegmentLength 0xFF
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173
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28
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29 using namespace libunwind;
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30
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221
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31 int main(int, char**) {
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173
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32 FrameHeaderCache FHC;
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33 struct dl_phdr_info PInfo;
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34 memset(&PInfo, 0, sizeof(PInfo));
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35 // The cache itself should only care about these two fields--they
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36 // tell the cache to invalidate or not; everything else is handled
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37 // by AddressSpace.hpp.
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38 PInfo.dlpi_adds = 6;
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39 PInfo.dlpi_subs = 7;
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40
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41 UnwindInfoSections UIS;
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42 UIS.dso_base = kBaseAddr;
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221
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43 UIS.text_segment_length = kTextSegmentLength;
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173
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44 dl_iterate_cb_data CBData;
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45 // Unused by the cache.
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46 CBData.addressSpace = nullptr;
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47 CBData.sects = &UIS;
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48 CBData.targetAddr = kBaseAddr + 1;
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49
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50 // Nothing present, shouldn't find.
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51 if (FHC.find(&PInfo, 0, &CBData))
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52 abort();
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53 FHC.add(&UIS);
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54 // Just added. Should find.
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55 if (!FHC.find(&PInfo, 0, &CBData))
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56 abort();
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57 // Cache is invalid. Shouldn't find.
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58 PInfo.dlpi_adds++;
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59 if (FHC.find(&PInfo, 0, &CBData))
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60 abort();
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61
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62 FHC.add(&UIS);
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63 CBData.targetAddr = kBaseAddr - 1;
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64 // Shouldn't find something outside of the addresses.
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65 if (FHC.find(&PInfo, 0, &CBData))
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66 abort();
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67 // Add enough things to the cache that the entry is evicted.
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68 for (int i = 0; i < 9; i++) {
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221
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69 UIS.dso_base = kBaseAddr + (kTextSegmentLength * i);
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173
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70 FHC.add(&UIS);
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71 }
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72 CBData.targetAddr = kBaseAddr;
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73 // Should have been evicted.
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74 if (FHC.find(&PInfo, 0, &CBData))
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75 abort();
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76 return 0;
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77 }
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221
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78
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173
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79 #else
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221
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80 int main(int, char**) { return 0;}
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173
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81 #endif
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