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