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| 1 |  |  |  |  |  |  | #pragma once | 
| 2 |  |  |  |  |  |  |  | 
| 3 |  |  |  |  |  |  | #include "SharedObjectInfo.h" | 
| 4 |  |  |  |  |  |  | #include | 
| 5 |  |  |  |  |  |  | #include | 
| 6 |  |  |  |  |  |  | #include | 
| 7 |  |  |  |  |  |  | #include | 
| 8 |  |  |  |  |  |  | #include   | 
| 9 |  |  |  |  |  |  | #include | 
| 10 |  |  |  |  |  |  | #include | 
| 11 |  |  |  |  |  |  | #include | 
| 12 |  |  |  |  |  |  |  | 
| 13 |  |  |  |  |  |  | namespace panda { namespace backtrace { | 
| 14 |  |  |  |  |  |  |  | 
| 15 |  |  |  |  |  |  | namespace dwarf { | 
| 16 |  |  |  |  |  |  |  | 
| 17 |  |  |  |  |  |  | struct HighLow { | 
| 18 |  |  |  |  |  |  | Dwarf_Addr high; | 
| 19 |  |  |  |  |  |  | Dwarf_Addr low; | 
| 20 |  |  |  |  |  |  | }; | 
| 21 |  |  |  |  |  |  |  | 
| 22 |  |  |  |  |  |  | enum class Match { yes, no, unknown }; | 
| 23 |  |  |  |  |  |  | enum class Scan  { found, not_found, dead_end }; | 
| 24 |  |  |  |  |  |  |  | 
| 25 |  |  |  |  |  |  | struct DieHolder; | 
| 26 |  |  |  |  |  |  | struct LookupResult; | 
| 27 |  |  |  |  |  |  | struct DieRC; | 
| 28 |  |  |  |  |  |  | using DieSP = panda::iptr; | 
| 29 |  |  |  |  |  |  | struct CU; | 
| 30 |  |  |  |  |  |  | using CUSP = panda::iptr; | 
| 31 |  |  |  |  |  |  | using DieCollection = std::list; | 
| 32 |  |  |  |  |  |  |  | 
| 33 | 0 |  |  |  |  |  | struct FunctionDetails { | 
| 34 |  |  |  |  |  |  | panda::string name; | 
| 35 |  |  |  |  |  |  | DieSP name_die = nullptr; | 
| 36 |  |  |  |  |  |  | std::uint64_t line_no = 0; | 
| 37 |  |  |  |  |  |  | panda::string source; | 
| 38 |  |  |  |  |  |  | }; | 
| 39 |  |  |  |  |  |  |  | 
| 40 |  |  |  |  |  |  | struct DieRC: panda::Refcnt { | 
| 41 |  |  |  |  |  |  | Dwarf_Die die; | 
| 42 |  |  |  |  |  |  | Dwarf_Debug debug; | 
| 43 |  |  |  |  |  |  | DieSP parent; | 
| 44 |  |  |  |  |  |  | DieCollection context; | 
| 45 |  |  |  |  |  |  |  | 
| 46 | 0 |  |  |  |  |  | struct FQN { | 
| 47 |  |  |  |  |  |  | string full_name; | 
| 48 |  |  |  |  |  |  | DieSP source_die; | 
| 49 |  |  |  |  |  |  | }; | 
| 50 |  |  |  |  |  |  |  | 
| 51 |  |  |  |  |  |  | DieRC(Dwarf_Die die_, Dwarf_Debug debug_, DieSP parent_); | 
| 52 |  |  |  |  |  |  | ~DieRC(); | 
| 53 |  |  |  |  |  |  |  | 
| 54 |  |  |  |  |  |  | Dwarf_Die resolve_ref(Dwarf_Die source, Dwarf_Half attribute) noexcept; | 
| 55 |  |  |  |  |  |  | DieSP discover(Dwarf_Die target) noexcept; | 
| 56 |  |  |  |  |  |  | DieSP discover(Dwarf_Off target_offset, DieHolder& node) noexcept; | 
| 57 |  |  |  |  |  |  | FQN gather_fqn() noexcept; | 
| 58 |  |  |  |  |  |  | DieSP refine_location(std::uint64_t offset) noexcept; | 
| 59 |  |  |  |  |  |  | FunctionDetails refine_fn(LookupResult& lr) noexcept; | 
| 60 |  |  |  |  |  |  | void refine_fn_ao(Dwarf_Die abstract_origin, FunctionDetails& details) noexcept; | 
| 61 |  |  |  |  |  |  | void refine_fn_name(Dwarf_Die it, FunctionDetails& details) noexcept; | 
| 62 |  |  |  |  |  |  | void refine_fn_line(Dwarf_Die die, std::uint64_t offset, FunctionDetails& details) noexcept; | 
| 63 |  |  |  |  |  |  | void refine_fn_line_fallback(Dwarf_Die it, FunctionDetails& details) noexcept; | 
| 64 |  |  |  |  |  |  | void refine_fn_source(Dwarf_Die it, FunctionDetails& details, CU& cu) noexcept; | 
| 65 |  |  |  |  |  |  | void refine_fn_spec(Dwarf_Die specification, FunctionDetails& details) noexcept; | 
| 66 |  |  |  |  |  |  | }; | 
| 67 |  |  |  |  |  |  |  | 
| 68 |  |  |  |  |  |  | struct DieHolder { | 
| 69 |  |  |  |  |  |  | Dwarf_Die die; | 
| 70 |  |  |  |  |  |  | Dwarf_Debug debug; | 
| 71 |  |  |  |  |  |  | DieHolder *parent; | 
| 72 |  |  |  |  |  |  | DieSP owner; | 
| 73 |  |  |  |  |  |  |  | 
| 74 |  |  |  |  |  |  | DieHolder(DieSP owner); | 
| 75 |  |  |  |  |  |  | DieHolder(Dwarf_Die die_, Dwarf_Debug debug_, DieHolder* parent); | 
| 76 |  |  |  |  |  |  | DieHolder(const DieHolder&) = delete; | 
| 77 |  |  |  |  |  |  | DieHolder(DieHolder&&) = delete; | 
| 78 |  |  |  |  |  |  |  | 
| 79 |  |  |  |  |  |  | DieSP detach(); | 
| 80 |  |  |  |  |  |  |  | 
| 81 |  |  |  |  |  |  | panda::optional get_addr() noexcept; | 
| 82 |  |  |  |  |  |  | Match contains(std::uint64_t offset) noexcept; | 
| 83 |  |  |  |  |  |  | ~DieHolder(); | 
| 84 |  |  |  |  |  |  | }; | 
| 85 |  |  |  |  |  |  |  | 
| 86 | 0 |  |  |  |  |  | struct LookupResult { | 
| 87 | 0 |  |  |  |  |  | LookupResult(CU& root_) noexcept: root{CUSP{&root_}} {} | 
| 88 |  |  |  |  |  |  | LookupResult(const LookupResult&) = delete; | 
| 89 |  |  |  |  |  |  | LookupResult(LookupResult&&); | 
| 90 |  |  |  |  |  |  |  | 
| 91 |  |  |  |  |  |  | bool is_complete() noexcept; | 
| 92 |  |  |  |  |  |  | bool get_frames(std::uint64_t ip, const SharedObjectInfo& so, StackFrames& frames) noexcept; | 
| 93 |  |  |  |  |  |  |  | 
| 94 |  |  |  |  |  |  | CUSP root; | 
| 95 |  |  |  |  |  |  | DieSP cu; | 
| 96 |  |  |  |  |  |  | DieSP subprogram; | 
| 97 |  |  |  |  |  |  | std::uint64_t offset{0}; | 
| 98 |  |  |  |  |  |  | }; | 
| 99 |  |  |  |  |  |  |  | 
| 100 |  |  |  |  |  |  | struct CU: panda::Refcnt { | 
| 101 |  |  |  |  |  |  | Dwarf_Debug debug; | 
| 102 |  |  |  |  |  |  | int number; | 
| 103 |  |  |  |  |  |  |  | 
| 104 |  |  |  |  |  |  | Dwarf_Unsigned header_length = 0; | 
| 105 |  |  |  |  |  |  | Dwarf_Unsigned abbrev_offset = 0; | 
| 106 |  |  |  |  |  |  | Dwarf_Half     address_size = 0; | 
| 107 |  |  |  |  |  |  | Dwarf_Half     version_stamp = 0; | 
| 108 |  |  |  |  |  |  | Dwarf_Half     offset_size = 0; | 
| 109 |  |  |  |  |  |  | Dwarf_Half     extension_size = 0; | 
| 110 |  |  |  |  |  |  | Dwarf_Unsigned typeoffset = 0; | 
| 111 |  |  |  |  |  |  | Dwarf_Half     header_type = DW_UT_compile; | 
| 112 |  |  |  |  |  |  | Dwarf_Sig8     signature; | 
| 113 |  |  |  |  |  |  | Dwarf_Off      cu_offset = 0; | 
| 114 |  |  |  |  |  |  | DieSP cu_die; | 
| 115 |  |  |  |  |  |  |  | 
| 116 |  |  |  |  |  |  | char **sources = nullptr; | 
| 117 |  |  |  |  |  |  | Dwarf_Signed sources_count = 0; | 
| 118 |  |  |  |  |  |  |  | 
| 119 |  |  |  |  |  |  | CU(Dwarf_Debug debug, int number_); | 
| 120 |  |  |  |  |  |  | ~CU(); | 
| 121 |  |  |  |  |  |  |  | 
| 122 |  |  |  |  |  |  | LookupResult resolve(std::uint64_t offset) noexcept; | 
| 123 |  |  |  |  |  |  | Scan resolve(std::uint64_t offset, DieHolder& die, LookupResult& lr) noexcept; | 
| 124 |  |  |  |  |  |  | Scan examine(std::uint64_t offset, DieHolder& die, LookupResult& lr) noexcept; | 
| 125 |  |  |  |  |  |  |  | 
| 126 |  |  |  |  |  |  | string get_source(size_t index) noexcept; | 
| 127 |  |  |  |  |  |  | }; | 
| 128 |  |  |  |  |  |  | } | 
| 129 |  |  |  |  |  |  |  | 
| 130 |  |  |  |  |  |  |  | 
| 131 |  |  |  |  |  |  | struct DwarfInfo; | 
| 132 |  |  |  |  |  |  |  | 
| 133 |  |  |  |  |  |  | struct DwarfInfo { | 
| 134 |  |  |  |  |  |  | using file_guard_t = std::unique_ptr>; | 
| 135 |  |  |  |  |  |  |  | 
| 136 |  |  |  |  |  |  | SharedObjectInfo so_info; | 
| 137 |  |  |  |  |  |  | Dwarf_Ptr err_arg = nullptr; | 
| 138 |  |  |  |  |  |  | Dwarf_Debug debug = nullptr; | 
| 139 |  |  |  |  |  |  | std::list CUs; | 
| 140 |  |  |  |  |  |  | file_guard_t guard; | 
| 141 |  |  |  |  |  |  |  | 
| 142 | 1054 |  |  |  |  |  | DwarfInfo(const SharedObjectInfo& info_):so_info{info_}{} | 
| 143 |  |  |  |  |  |  | ~DwarfInfo(); | 
| 144 |  |  |  |  |  |  |  | 
| 145 |  |  |  |  |  |  | bool load(file_guard_t&& guard) noexcept; | 
| 146 |  |  |  |  |  |  | bool resolve(std::uint64_t ip, StackFrames& frames) noexcept; | 
| 147 |  |  |  |  |  |  | }; | 
| 148 |  |  |  |  |  |  | using DwarfInfoMap = std::map>; | 
| 149 |  |  |  |  |  |  |  | 
| 150 |  |  |  |  |  |  |  | 
| 151 |  |  |  |  |  |  | void install_backtracer(); | 
| 152 |  |  |  |  |  |  |  | 
| 153 |  |  |  |  |  |  | }} |