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