[2573] | 1 | #ifdef CPPTRACE_GET_SYMBOLS_WITH_LIBDWARF |
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| 2 | |
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| 3 | #include "cpptrace.hpp" |
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| 4 | #include "symbols.hpp" |
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| 5 | #include "common.hpp" |
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| 6 | #include "program_name.hpp" |
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| 7 | #include "object.hpp" |
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| 8 | |
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| 9 | #include <cassert> |
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| 10 | #include <cstdint> |
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| 11 | #include <cstdio> |
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| 12 | #include <functional> |
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| 13 | #include <memory> |
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| 14 | #include <mutex> |
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| 15 | #include <type_traits> |
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| 16 | #include <vector> |
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| 17 | |
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| 18 | #include <libdwarf.h> |
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| 19 | #include <dwarf.h> |
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| 20 | |
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| 21 | // some stuff is based on https://github.com/davea42/libdwarf-addr2line/blob/master/addr2line.c, mainly line handling |
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| 22 | // then much expanded for symbols and efficiency |
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| 23 | // dwarf5_ranges and dwarf4_ranges utility functions are taken from there directly, also pc_in_die |
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| 24 | |
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| 25 | // TODO |
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| 26 | // Inlined calls |
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| 27 | // Memoizing / lazy loading |
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| 28 | // More utils to clean this up, some wrapper for unique_ptr |
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| 29 | // Ensure memory is being cleaned up properly |
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| 30 | // Efficiency tricks |
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| 31 | // Implementation cleanup |
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| 32 | // Properly get the image base |
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| 33 | |
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| 34 | #define DW_PR_DUx "llx" |
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| 35 | #define DW_PR_DUu "llu" |
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| 36 | |
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| 37 | Dwarf_Unsigned get_ranges_offset(Dwarf_Attribute attr) { |
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| 38 | Dwarf_Unsigned off = 0; |
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| 39 | Dwarf_Half attrform = 0; |
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| 40 | dwarf_whatform(attr, &attrform, nullptr); |
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| 41 | if (attrform == DW_FORM_rnglistx) { |
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| 42 | int fres = dwarf_formudata(attr, &off, nullptr); |
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| 43 | assert(fres == DW_DLV_OK); |
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| 44 | } else { |
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| 45 | int fres = dwarf_global_formref(attr, &off, nullptr); |
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| 46 | assert(fres == DW_DLV_OK); |
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| 47 | } |
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| 48 | return off; |
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| 49 | } |
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| 50 | |
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| 51 | static int dwarf5_ranges(Dwarf_Die cu_die, Dwarf_Addr *lowest, Dwarf_Addr *highest) { |
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| 52 | Dwarf_Unsigned offset = 0; |
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| 53 | Dwarf_Attribute attr = 0; |
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| 54 | Dwarf_Half attrform = 0; |
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| 55 | Dwarf_Unsigned i = 0; |
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| 56 | int res = 0; |
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| 57 | |
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| 58 | res = dwarf_attr(cu_die, DW_AT_ranges, &attr, nullptr); |
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| 59 | if(res != DW_DLV_OK) { |
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| 60 | return res; |
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| 61 | } |
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| 62 | offset = get_ranges_offset(attr); |
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| 63 | if(true) { |
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| 64 | Dwarf_Unsigned rlesetoffset = 0; |
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| 65 | Dwarf_Unsigned rnglists_count = 0; |
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| 66 | Dwarf_Rnglists_Head head = 0; |
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| 67 | |
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| 68 | dwarf_whatform(attr, &attrform, nullptr); |
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| 69 | /* offset is in .debug_rnglists */ |
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| 70 | res = dwarf_rnglists_get_rle_head( |
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| 71 | attr, |
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| 72 | attrform, |
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| 73 | offset, |
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| 74 | &head, |
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| 75 | &rnglists_count, |
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| 76 | &rlesetoffset, |
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| 77 | nullptr |
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| 78 | ); |
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| 79 | if(res != DW_DLV_OK) { |
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| 80 | /* ASSERT: is DW_DLV_NO_ENTRY */ |
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| 81 | dwarf_dealloc_attribute(attr); |
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| 82 | return res; |
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| 83 | } |
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| 84 | for( ; i < rnglists_count; ++i) { |
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| 85 | unsigned entrylen = 0; |
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| 86 | unsigned rle_val = 0; |
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| 87 | Dwarf_Unsigned raw1 = 0; |
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| 88 | Dwarf_Unsigned raw2 = 0; |
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| 89 | Dwarf_Bool unavail = 0; |
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| 90 | Dwarf_Unsigned cooked1 = 0; |
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| 91 | Dwarf_Unsigned cooked2 = 0; |
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| 92 | |
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| 93 | res = dwarf_get_rnglists_entry_fields_a( |
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| 94 | head, |
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| 95 | i, |
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| 96 | &entrylen, |
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| 97 | &rle_val, |
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| 98 | &raw1, |
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| 99 | &raw2, |
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| 100 | &unavail, |
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| 101 | &cooked1, |
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| 102 | &cooked2, |
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| 103 | nullptr |
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| 104 | ); |
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| 105 | if(res != DW_DLV_OK) { |
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| 106 | /* ASSERT: is DW_DLV_NO_ENTRY */ |
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| 107 | continue; |
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| 108 | } |
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| 109 | if(unavail) { |
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| 110 | continue; |
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| 111 | } |
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| 112 | switch(rle_val) { |
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| 113 | case DW_RLE_end_of_list: |
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| 114 | case DW_RLE_base_address: |
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| 115 | case DW_RLE_base_addressx: |
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| 116 | /* These are accounted for already */ |
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| 117 | break; |
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| 118 | case DW_RLE_offset_pair: |
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| 119 | case DW_RLE_startx_endx: |
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| 120 | case DW_RLE_start_end: |
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| 121 | case DW_RLE_startx_length: |
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| 122 | case DW_RLE_start_length: |
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| 123 | if(cooked1 < *lowest) { |
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| 124 | *lowest = cooked1; |
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| 125 | } |
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| 126 | if(cooked2 > *highest) { |
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| 127 | *highest = cooked2; |
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| 128 | } |
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| 129 | default: |
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| 130 | /* Something is wrong. */ |
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| 131 | break; |
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| 132 | |
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| 133 | } |
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| 134 | } |
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| 135 | dwarf_dealloc_rnglists_head(head); |
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| 136 | } |
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| 137 | dwarf_dealloc_attribute(attr); |
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| 138 | return DW_DLV_OK; |
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| 139 | } |
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| 140 | |
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| 141 | static int dwarf4_ranges( |
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| 142 | Dwarf_Debug dbg, |
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| 143 | Dwarf_Die cu_die, |
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| 144 | Dwarf_Addr cu_lowpc, |
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| 145 | Dwarf_Addr *lowest, |
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| 146 | Dwarf_Addr *highest |
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| 147 | ) { |
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| 148 | Dwarf_Unsigned offset; |
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| 149 | Dwarf_Attribute attr = 0; |
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| 150 | int res = 0; |
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| 151 | |
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| 152 | res = dwarf_attr(cu_die, DW_AT_ranges, &attr, nullptr); |
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| 153 | if(res != DW_DLV_OK) { |
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| 154 | return res; |
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| 155 | } |
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| 156 | if(dwarf_global_formref(attr, &offset, nullptr) == DW_DLV_OK) { |
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| 157 | Dwarf_Signed count = 0; |
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| 158 | Dwarf_Ranges *ranges = 0; |
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| 159 | Dwarf_Addr baseaddr = 0; |
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| 160 | if(cu_lowpc != 0xffffffffffffffff) { |
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| 161 | baseaddr = cu_lowpc; |
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| 162 | } |
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| 163 | res = dwarf_get_ranges_b( |
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| 164 | dbg, |
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| 165 | offset, |
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| 166 | cu_die, |
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| 167 | nullptr, |
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| 168 | &ranges, |
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| 169 | &count, |
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| 170 | nullptr, |
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| 171 | nullptr |
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| 172 | ); |
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| 173 | for(int i = 0; i < count; i++) { |
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| 174 | Dwarf_Ranges *cur = ranges + i; |
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| 175 | |
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| 176 | if(cur->dwr_type == DW_RANGES_ENTRY) { |
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| 177 | Dwarf_Addr rng_lowpc, rng_highpc; |
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| 178 | rng_lowpc = baseaddr + cur->dwr_addr1; |
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| 179 | rng_highpc = baseaddr + cur->dwr_addr2; |
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| 180 | if(rng_lowpc < *lowest) { |
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| 181 | *lowest = rng_lowpc; |
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| 182 | } |
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| 183 | if(rng_highpc > *highest) { |
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| 184 | *highest = rng_highpc; |
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| 185 | } |
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| 186 | } else if(cur->dwr_type == |
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| 187 | DW_RANGES_ADDRESS_SELECTION) { |
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| 188 | baseaddr = cur->dwr_addr2; |
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| 189 | } else { // DW_RANGES_END |
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| 190 | baseaddr = cu_lowpc; |
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| 191 | } |
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| 192 | } |
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| 193 | dwarf_dealloc_ranges(dbg, ranges, count); |
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| 194 | } |
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| 195 | dwarf_dealloc_attribute(attr); |
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| 196 | return DW_DLV_OK; |
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| 197 | } |
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| 198 | |
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| 199 | namespace cpptrace { |
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| 200 | namespace detail { |
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| 201 | namespace libdwarf { |
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| 202 | // printbugging as we go |
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| 203 | constexpr bool dump_dwarf = false; |
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| 204 | constexpr bool trace_dwarf = false; |
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| 205 | |
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| 206 | static void err_handler(Dwarf_Error err, Dwarf_Ptr errarg) { |
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| 207 | printf("libdwarf error reading %s: %lu %s\n", "xx", (unsigned long)dwarf_errno(err), dwarf_errmsg(err)); |
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| 208 | if(errarg) { |
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| 209 | printf("Error: errarg is nonnull but it should be null\n"); |
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| 210 | } |
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| 211 | printf("Giving up"); |
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| 212 | exit(1); |
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| 213 | } |
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| 214 | |
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| 215 | static void print_line(Dwarf_Debug dbg, Dwarf_Line line, Dwarf_Addr pc, stacktrace_frame& frame) { |
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| 216 | char what[] = "??"; |
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| 217 | char * linesrc = what; |
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| 218 | Dwarf_Unsigned lineno = 0; |
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| 219 | |
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| 220 | (void)pc; |
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| 221 | |
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| 222 | if(line) { |
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| 223 | /* These never return DW_DLV_NO_ENTRY */ |
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| 224 | dwarf_linesrc(line, &linesrc, nullptr); |
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| 225 | dwarf_lineno(line, &lineno, nullptr); |
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| 226 | } |
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| 227 | if(dump_dwarf) { |
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| 228 | printf("%s:%" DW_PR_DUu "\n", linesrc, lineno); |
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| 229 | } |
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| 230 | frame.line = static_cast<uint_least32_t>(lineno); |
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| 231 | frame.filename = linesrc; |
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| 232 | if(line) { |
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| 233 | dwarf_dealloc(dbg, linesrc, DW_DLA_STRING); |
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| 234 | } |
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| 235 | } |
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| 236 | |
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| 237 | static Dwarf_Bool pc_in_die(Dwarf_Debug dbg, Dwarf_Die die,int version, Dwarf_Addr pc) { |
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| 238 | int ret; |
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| 239 | Dwarf_Addr cu_lowpc = 0xffffffffffffffff; |
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| 240 | Dwarf_Addr cu_highpc = 0; |
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| 241 | enum Dwarf_Form_Class highpc_cls; |
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| 242 | Dwarf_Addr lowest = 0xffffffffffffffff; |
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| 243 | Dwarf_Addr highest = 0; |
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| 244 | |
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| 245 | ret = dwarf_lowpc(die, &cu_lowpc, nullptr); |
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| 246 | if(ret == DW_DLV_OK) { |
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| 247 | if(pc == cu_lowpc) { |
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| 248 | return true; |
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| 249 | } |
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| 250 | ret = dwarf_highpc_b(die, &cu_highpc, |
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| 251 | nullptr, &highpc_cls, nullptr); |
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| 252 | if(ret == DW_DLV_OK) { |
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| 253 | if(highpc_cls == DW_FORM_CLASS_CONSTANT) { |
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| 254 | cu_highpc += cu_lowpc; |
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| 255 | } |
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| 256 | //fprintf(stderr, "low: %llx high: %llx pc: %llx\n", cu_lowpc, cu_highpc, pc); |
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| 257 | if(pc >= cu_lowpc && pc < cu_highpc) { |
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| 258 | return true; |
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| 259 | } |
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| 260 | } |
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| 261 | } |
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| 262 | if(version >= 5) { |
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| 263 | ret = dwarf5_ranges(die, |
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| 264 | &lowest,&highest); |
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| 265 | } else { |
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| 266 | ret = dwarf4_ranges(dbg,die,cu_lowpc, |
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| 267 | &lowest,&highest); |
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| 268 | } |
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| 269 | //fprintf(stderr, "low: %llu high: %llu\n", lowest, highest); |
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| 270 | if(pc >= lowest && pc < highest) { |
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| 271 | return true; |
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| 272 | } |
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| 273 | return false; |
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| 274 | } |
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| 275 | |
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| 276 | static_assert(std::is_pointer<Dwarf_Die>::value, "Dwarf_Die not a pointer"); |
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| 277 | static_assert(std::is_pointer<Dwarf_Debug>::value, "Dwarf_Debug not a pointer"); |
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| 278 | |
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| 279 | struct die_object { |
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| 280 | Dwarf_Debug dbg = nullptr; |
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| 281 | Dwarf_Die die = nullptr; |
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| 282 | |
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| 283 | die_object(Dwarf_Debug dbg, Dwarf_Die die) : dbg(dbg), die(die) {} |
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| 284 | |
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| 285 | ~die_object() { |
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| 286 | if(die) { |
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| 287 | dwarf_dealloc(dbg, die, DW_DLA_DIE); |
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| 288 | } |
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| 289 | } |
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| 290 | |
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| 291 | die_object(const die_object&) = delete; |
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| 292 | |
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| 293 | die_object& operator=(const die_object&) = delete; |
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| 294 | |
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| 295 | die_object(die_object&& other) : dbg(other.dbg), die(other.die) { |
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| 296 | other.die = nullptr; |
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| 297 | } |
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| 298 | |
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| 299 | die_object& operator=(die_object&& other) { |
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| 300 | dbg = other.dbg; |
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| 301 | die = other.die; |
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| 302 | other.die = nullptr; |
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| 303 | return *this; |
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| 304 | } |
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| 305 | |
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| 306 | die_object get_child() const { |
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| 307 | Dwarf_Die child = nullptr; |
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| 308 | int ret = dwarf_child( |
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| 309 | die, |
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| 310 | &child, |
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| 311 | nullptr |
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| 312 | ); |
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| 313 | if(ret == DW_DLV_OK) { |
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| 314 | return die_object(dbg, child); |
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| 315 | } else if(ret == DW_DLV_NO_ENTRY) { |
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| 316 | return die_object(dbg, 0); |
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| 317 | } else { |
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| 318 | fprintf(stderr, "Error\n"); |
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| 319 | exit(1); |
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| 320 | } |
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| 321 | } |
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| 322 | |
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| 323 | die_object get_sibling() const { |
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| 324 | Dwarf_Die sibling = 0; |
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| 325 | int ret = dwarf_siblingof_b(dbg, die, true, &sibling, nullptr); |
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| 326 | if(ret == DW_DLV_OK) { |
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| 327 | return die_object(dbg, sibling); |
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| 328 | } else if(ret == DW_DLV_NO_ENTRY) { |
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| 329 | return die_object(dbg, 0); |
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| 330 | } else { |
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| 331 | fprintf(stderr, "Error\n"); |
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| 332 | exit(1); |
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| 333 | } |
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| 334 | } |
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| 335 | |
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| 336 | operator bool() const { |
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| 337 | return die != nullptr; |
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| 338 | } |
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| 339 | |
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| 340 | Dwarf_Die get() const { |
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| 341 | return die; |
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| 342 | } |
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| 343 | |
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| 344 | std::string get_name() const { |
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| 345 | char* name; |
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| 346 | int ret = dwarf_diename(die, &name, nullptr); |
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| 347 | std::string str; |
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| 348 | if(ret != DW_DLV_NO_ENTRY) { |
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| 349 | str = name; |
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| 350 | dwarf_dealloc(dbg, name, DW_DLA_STRING); |
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| 351 | } |
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| 352 | return name; |
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| 353 | } |
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| 354 | |
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| 355 | optional<std::string> get_string_attribute(Dwarf_Half dw_attrnum) const { |
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| 356 | Dwarf_Attribute attr; |
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| 357 | int ret = dwarf_attr(die, dw_attrnum, &attr, nullptr); |
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| 358 | if(ret == DW_DLV_OK) { |
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| 359 | char* raw_str; |
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| 360 | std::string str; |
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| 361 | ret = dwarf_formstring(attr, &raw_str, nullptr); |
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| 362 | assert(ret == DW_DLV_OK); |
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| 363 | str = raw_str; |
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| 364 | dwarf_dealloc(dbg, raw_str, DW_DLA_STRING); |
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| 365 | dwarf_dealloc(dbg, attr, DW_DLA_ATTR); |
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| 366 | return str; |
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| 367 | } else { |
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| 368 | return nullopt; |
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| 369 | } |
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| 370 | } |
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| 371 | |
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| 372 | bool has_attr(Dwarf_Half dw_attrnum) const { |
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| 373 | Dwarf_Attribute attr; |
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| 374 | int ret = dwarf_attr(die, dw_attrnum, &attr, nullptr); |
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| 375 | if(ret == DW_DLV_NO_ENTRY) { |
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| 376 | return false; |
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| 377 | } else if(ret == DW_DLV_OK) { |
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| 378 | // TODO: Better impl that doesn't require allocation....? |
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| 379 | dwarf_dealloc(dbg, attr, DW_DLA_ATTR); |
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| 380 | return true; |
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| 381 | } else { |
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| 382 | fprintf(stderr, "Error\n"); |
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| 383 | exit(1); |
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| 384 | } |
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| 385 | } |
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| 386 | |
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| 387 | Dwarf_Half get_tag() const { |
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| 388 | Dwarf_Half tag = 0; |
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| 389 | dwarf_tag(die, &tag, nullptr); |
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| 390 | return tag; |
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| 391 | } |
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| 392 | |
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| 393 | const char* get_tag_name() const { |
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| 394 | const char* tag_name; |
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| 395 | dwarf_get_TAG_name(get_tag(), &tag_name); |
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| 396 | return tag_name; |
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| 397 | } |
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| 398 | |
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| 399 | Dwarf_Off get_global_offset() const { |
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| 400 | Dwarf_Off off; |
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| 401 | int ret = dwarf_dieoffset(die, &off, nullptr); |
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| 402 | assert(ret == DW_DLV_OK); |
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| 403 | return off; |
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| 404 | } |
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| 405 | |
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| 406 | die_object resolve_reference_attribute(Dwarf_Half dw_attrnum) const { |
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| 407 | Dwarf_Attribute attr; |
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| 408 | int ret = dwarf_attr(die, dw_attrnum, &attr, nullptr); |
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| 409 | Dwarf_Half form = 0; |
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| 410 | ret = dwarf_whatform(attr, &form, nullptr); |
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| 411 | switch(form) { |
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| 412 | case DW_FORM_ref1: |
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| 413 | case DW_FORM_ref2: |
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| 414 | case DW_FORM_ref4: |
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| 415 | case DW_FORM_ref8: |
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| 416 | case DW_FORM_ref_udata: |
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| 417 | { |
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| 418 | Dwarf_Off off = 0; |
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| 419 | Dwarf_Bool is_info = dwarf_get_die_infotypes_flag(die); |
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| 420 | ret = dwarf_formref(attr, &off, &is_info, nullptr); |
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| 421 | assert(ret == DW_DLV_OK); |
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| 422 | Dwarf_Off goff = 0; |
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| 423 | ret = dwarf_convert_to_global_offset(attr, off, &goff, nullptr); |
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| 424 | assert(ret == DW_DLV_OK); |
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| 425 | Dwarf_Die targ_die_a = 0; |
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| 426 | ret = dwarf_offdie_b(dbg, goff, is_info, &targ_die_a, nullptr); |
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| 427 | assert(ret == DW_DLV_OK); |
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| 428 | return die_object(dbg, targ_die_a); |
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| 429 | } |
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| 430 | case DW_FORM_ref_addr: |
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| 431 | { |
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| 432 | Dwarf_Off off; |
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| 433 | ret = dwarf_global_formref(attr, &off, nullptr); |
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| 434 | int is_info_a = dwarf_get_die_infotypes_flag(die); |
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| 435 | Dwarf_Die targ_die_a = 0; |
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| 436 | ret = dwarf_offdie_b(dbg, off, is_info_a, &targ_die_a, nullptr); |
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| 437 | assert(ret == DW_DLV_OK); |
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| 438 | return die_object(dbg, targ_die_a); |
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| 439 | } |
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| 440 | case DW_FORM_ref_sig8: |
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| 441 | { |
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| 442 | Dwarf_Sig8 signature; |
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| 443 | ret = dwarf_formsig8(attr, &signature, nullptr); |
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| 444 | assert(ret == DW_DLV_OK); |
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| 445 | Dwarf_Die targdie = 0; |
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| 446 | Dwarf_Bool targ_is_info = false; |
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| 447 | ret = dwarf_find_die_given_sig8(dbg, &signature, &targdie, &targ_is_info, nullptr); |
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| 448 | assert(ret == DW_DLV_OK); |
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| 449 | return die_object(dbg, targdie); |
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| 450 | } |
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| 451 | default: |
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| 452 | fprintf(stderr, "unknown form for attribute %d %d\n", dw_attrnum, form); |
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| 453 | exit(1); |
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| 454 | } |
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| 455 | } |
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| 456 | }; |
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| 457 | |
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| 458 | void walk_die_list( |
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| 459 | Dwarf_Debug dbg, |
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| 460 | const die_object& die, |
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| 461 | std::function<void(Dwarf_Debug, const die_object&)> fn |
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| 462 | ) { |
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| 463 | fn(dbg, die); |
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| 464 | die_object current = die.get_sibling(); |
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| 465 | while(true) { |
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| 466 | if(!current) { |
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| 467 | if(dump_dwarf) { |
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| 468 | fprintf(stderr, "End walk_die_list\n"); |
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| 469 | } |
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| 470 | return; |
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| 471 | } |
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| 472 | fn(dbg, current); |
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| 473 | current = current.get_sibling(); |
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| 474 | } |
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| 475 | } |
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| 476 | |
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| 477 | void walk_die_list_recursive( |
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| 478 | Dwarf_Debug dbg, |
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| 479 | const die_object& die, |
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| 480 | std::function<void(Dwarf_Debug, const die_object&)> fn |
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| 481 | ) { |
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| 482 | walk_die_list( |
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| 483 | dbg, |
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| 484 | die, |
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| 485 | [&fn](Dwarf_Debug dbg, const die_object& die) { |
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| 486 | auto child = die.get_child(); |
---|
| 487 | if(child) { |
---|
| 488 | walk_die_list_recursive(dbg, child, fn); |
---|
| 489 | } |
---|
| 490 | fn(dbg, die); |
---|
| 491 | } |
---|
| 492 | ); |
---|
| 493 | } |
---|
| 494 | |
---|
| 495 | die_object get_type_die(Dwarf_Debug dbg, const die_object& die) { |
---|
| 496 | Dwarf_Off type_offset; |
---|
| 497 | Dwarf_Bool is_info; |
---|
| 498 | int ret = dwarf_dietype_offset(die.get(), &type_offset, &is_info, nullptr); |
---|
| 499 | if(ret == DW_DLV_OK) { |
---|
| 500 | Dwarf_Die type_die; |
---|
| 501 | ret = dwarf_offdie_b( |
---|
| 502 | dbg, |
---|
| 503 | type_offset, |
---|
| 504 | is_info, |
---|
| 505 | &type_die, |
---|
| 506 | nullptr |
---|
| 507 | ); |
---|
| 508 | if(ret == DW_DLV_OK) { |
---|
| 509 | return die_object(dbg, type_die); |
---|
| 510 | } else { |
---|
| 511 | fprintf(stderr, "Error\n"); |
---|
| 512 | exit(1); |
---|
| 513 | } |
---|
| 514 | } else { |
---|
| 515 | fprintf(stderr, "no type offset??\n"); |
---|
| 516 | } |
---|
| 517 | return die_object(dbg, nullptr); |
---|
| 518 | } |
---|
| 519 | |
---|
| 520 | bool has_type(Dwarf_Debug dbg, const die_object& die) { |
---|
| 521 | Dwarf_Attribute attr; |
---|
| 522 | int ret = dwarf_attr(die.get(), DW_AT_type, &attr, nullptr); |
---|
| 523 | if(ret == DW_DLV_NO_ENTRY) { |
---|
| 524 | return false; |
---|
| 525 | } else if(ret == DW_DLV_OK) { |
---|
| 526 | dwarf_dealloc(dbg, attr, DW_DLA_ATTR); |
---|
| 527 | return true; |
---|
| 528 | } else { |
---|
| 529 | fprintf(stderr, "Error\n"); |
---|
| 530 | exit(1); |
---|
| 531 | } |
---|
| 532 | } |
---|
| 533 | |
---|
| 534 | struct type_result { |
---|
| 535 | std::string base; |
---|
| 536 | std::string extent; |
---|
| 537 | |
---|
| 538 | std::string get_type() { |
---|
| 539 | return base + extent; |
---|
| 540 | } |
---|
| 541 | }; |
---|
| 542 | |
---|
| 543 | // TODO: ::*, namespace lookup, arrays |
---|
| 544 | // DW_TAG_namespace |
---|
| 545 | const char* tag_to_keyword(Dwarf_Half tag) { |
---|
| 546 | switch(tag) { |
---|
| 547 | case DW_TAG_atomic_type: |
---|
| 548 | return "_Atomic"; |
---|
| 549 | case DW_TAG_const_type: |
---|
| 550 | return "const"; |
---|
| 551 | case DW_TAG_volatile_type: |
---|
| 552 | return "volatile"; |
---|
| 553 | case DW_TAG_restrict_type: |
---|
| 554 | return "restrict"; |
---|
| 555 | default: |
---|
| 556 | { |
---|
| 557 | const char* tag_name = nullptr; |
---|
| 558 | dwarf_get_TAG_name(tag, &tag_name); |
---|
| 559 | fprintf(stderr, "tag_to_keyword unknown tag %s\n", tag_name); |
---|
| 560 | exit(1); |
---|
| 561 | } |
---|
| 562 | } |
---|
| 563 | } |
---|
| 564 | const char* tag_to_ptr_ref(Dwarf_Half tag) { |
---|
| 565 | switch(tag) { |
---|
| 566 | case DW_TAG_pointer_type: |
---|
| 567 | return "*"; |
---|
| 568 | case DW_TAG_ptr_to_member_type: |
---|
| 569 | return "::*"; // TODO |
---|
| 570 | case DW_TAG_reference_type: |
---|
| 571 | return "&"; |
---|
| 572 | case DW_TAG_rvalue_reference_type: |
---|
| 573 | return "&&"; |
---|
| 574 | default: |
---|
| 575 | { |
---|
| 576 | const char* tag_name = nullptr; |
---|
| 577 | dwarf_get_TAG_name(tag, &tag_name); |
---|
| 578 | fprintf(stderr, "tag_to_ptr_ref unknown tag %s\n", tag_name); |
---|
| 579 | exit(1); |
---|
| 580 | } |
---|
| 581 | } |
---|
| 582 | } |
---|
| 583 | |
---|
| 584 | /*std::string resolve_type(Dwarf_Debug dbg, const die_object& die, std::string build = ""); |
---|
| 585 | |
---|
| 586 | std::string get_array_extents(Dwarf_Debug dbg, const die_object& die) { |
---|
| 587 | assert(die.get_tag() == DW_TAG_array_type); |
---|
| 588 | std::string extents = ""; |
---|
| 589 | walk_die_list(dbg, die.get_child(), [&extents](Dwarf_Debug dbg, const die_object& subrange) { |
---|
| 590 | if(subrange.get_tag() == DW_TAG_subrange_type) { |
---|
| 591 | Dwarf_Attribute attr = 0; |
---|
| 592 | int res = 0; |
---|
| 593 | res = dwarf_attr(subrange.get(), DW_AT_upper_bound, &attr, nullptr); |
---|
| 594 | if(res != DW_DLV_OK) { |
---|
| 595 | fprintf(stderr, "Error\n"); |
---|
| 596 | return; |
---|
| 597 | } |
---|
| 598 | Dwarf_Half form; |
---|
| 599 | res = dwarf_whatform(attr, &form, nullptr); |
---|
| 600 | if(res != DW_DLV_OK) { |
---|
| 601 | fprintf(stderr, "Error\n"); |
---|
| 602 | return; |
---|
| 603 | } |
---|
| 604 | //fprintf(stderr, "form: %d\n", form); |
---|
| 605 | Dwarf_Unsigned val; |
---|
| 606 | res = dwarf_formudata(attr, &val, nullptr); |
---|
| 607 | if(res != DW_DLV_OK) { |
---|
| 608 | fprintf(stderr, "Error\n"); |
---|
| 609 | return; |
---|
| 610 | } |
---|
| 611 | extents += "[" + std::to_string(val + 1) + "]"; |
---|
| 612 | dwarf_dealloc_attribute(attr); |
---|
| 613 | } else { |
---|
| 614 | fprintf(stderr, "unknown tag %s\n", subrange.get_tag_name()); |
---|
| 615 | } |
---|
| 616 | }); |
---|
| 617 | return extents; |
---|
| 618 | } |
---|
| 619 | |
---|
| 620 | std::string get_parameters(Dwarf_Debug dbg, const die_object& die) { |
---|
| 621 | assert(die.get_tag() == DW_TAG_subroutine_type); |
---|
| 622 | std::vector<std::string> params; |
---|
| 623 | walk_die_list(dbg, die.get_child(), [¶ms](Dwarf_Debug dbg, const die_object& die) { |
---|
| 624 | if(die.get_tag() == DW_TAG_formal_parameter) { |
---|
| 625 | // TODO: Ignore DW_AT_artificial |
---|
| 626 | params.push_back(resolve_type(dbg, get_type_die(dbg, die))); |
---|
| 627 | } |
---|
| 628 | }); |
---|
| 629 | return "(" + join(params, ", ") + ")"; |
---|
| 630 | } |
---|
| 631 | |
---|
| 632 | std::string resolve_type(Dwarf_Debug dbg, const die_object& die, std::string build) { |
---|
| 633 | switch(auto tag = die.get_tag()) { |
---|
| 634 | case DW_TAG_base_type: |
---|
| 635 | case DW_TAG_class_type: |
---|
| 636 | case DW_TAG_structure_type: |
---|
| 637 | case DW_TAG_union_type: |
---|
| 638 | case DW_TAG_enumeration_type: |
---|
| 639 | return die.get_name() + build; |
---|
| 640 | case DW_TAG_typedef: |
---|
| 641 | return resolve_type(dbg, get_type_die(dbg, die)); |
---|
| 642 | //case DW_TAG_subroutine_type: |
---|
| 643 | // { |
---|
| 644 | // // If there's no DW_AT_type then it's a void |
---|
| 645 | // std::vector<std::string> params; |
---|
| 646 | // // TODO: Code duplication with retrieve_symbol_for_subprogram? |
---|
| 647 | // walk_die_list(dbg, die.get_child(), [¶ms] (Dwarf_Debug dbg, const die_object& die) { |
---|
| 648 | // if(die.get_tag() == DW_TAG_formal_parameter) { |
---|
| 649 | // // TODO: Ignore DW_AT_artificial |
---|
| 650 | // params.push_back(resolve_type(dbg, get_type_die(dbg, die))); |
---|
| 651 | // } |
---|
| 652 | // }); |
---|
| 653 | // if(!has_type(dbg, die)) { |
---|
| 654 | // return "void" + (build.empty() ? "" : "(" + build + ")") + "(" + join(params, ", ") + ")"; |
---|
| 655 | // } else { |
---|
| 656 | // // resolving return type, building on build |
---|
| 657 | // return resolve_type( |
---|
| 658 | // dbg, get_type_die(dbg, die), |
---|
| 659 | // (build.empty() ? "" : "(" + build + ")") |
---|
| 660 | // + "(" |
---|
| 661 | // + join(params, ", ") |
---|
| 662 | // + ")" |
---|
| 663 | // ); |
---|
| 664 | // } |
---|
| 665 | // } |
---|
| 666 | //case DW_TAG_array_type: |
---|
| 667 | // return resolve_type(dbg, get_type_die(dbg, die), (build.empty() ? "" : "(" + build + ")") + "[" + "x" + "]"); |
---|
| 668 | case DW_TAG_pointer_type: |
---|
| 669 | case DW_TAG_reference_type: |
---|
| 670 | case DW_TAG_rvalue_reference_type: |
---|
| 671 | case DW_TAG_ptr_to_member_type: |
---|
| 672 | { |
---|
| 673 | const auto child = get_type_die(dbg, die); // AST child, rather than dwarf child |
---|
| 674 | const auto child_tag = child.get_tag(); |
---|
| 675 | switch(child_tag) { |
---|
| 676 | case DW_TAG_subroutine_type: |
---|
| 677 | if(!has_type(dbg, child)) { |
---|
| 678 | return "void(" + std::string(tag_to_ptr_ref(tag)) + build + ")" + get_parameters(dbg, child); |
---|
| 679 | } else { |
---|
| 680 | return resolve_type( |
---|
| 681 | dbg, |
---|
| 682 | get_type_die(dbg, child), |
---|
| 683 | "(" + std::string(tag_to_ptr_ref(tag)) + build + ")" + get_parameters(dbg, child) |
---|
| 684 | ); |
---|
| 685 | } |
---|
| 686 | case DW_TAG_array_type: |
---|
| 687 | return resolve_type( |
---|
| 688 | dbg, |
---|
| 689 | get_type_die(dbg, child), |
---|
| 690 | "(" + std::string(tag_to_ptr_ref(tag)) + build + ")" + get_array_extents(dbg, child) |
---|
| 691 | ); |
---|
| 692 | default: |
---|
| 693 | if(build.empty()) { |
---|
| 694 | return resolve_type(dbg, get_type_die(dbg, die), tag_to_ptr_ref(tag)); |
---|
| 695 | } else { |
---|
| 696 | return resolve_type( |
---|
| 697 | dbg, |
---|
| 698 | get_type_die(dbg, die), |
---|
| 699 | std::string(tag_to_ptr_ref(tag)) + " " + build |
---|
| 700 | ); |
---|
| 701 | } |
---|
| 702 | } |
---|
| 703 | } |
---|
| 704 | case DW_TAG_const_type: |
---|
| 705 | case DW_TAG_atomic_type: |
---|
| 706 | case DW_TAG_volatile_type: |
---|
| 707 | case DW_TAG_restrict_type: |
---|
| 708 | { |
---|
| 709 | const auto child = get_type_die(dbg, die); // AST child, rather than dwarf child |
---|
| 710 | const auto child_tag = child.get_tag(); |
---|
| 711 | switch(child_tag) { |
---|
| 712 | case DW_TAG_base_type: |
---|
| 713 | case DW_TAG_class_type: |
---|
| 714 | case DW_TAG_typedef: |
---|
| 715 | return std::string(tag_to_keyword(tag)) |
---|
| 716 | + " " |
---|
| 717 | + resolve_type(dbg, get_type_die(dbg, die), build); |
---|
| 718 | default: |
---|
| 719 | return resolve_type( |
---|
| 720 | dbg, |
---|
| 721 | get_type_die(dbg, die), |
---|
| 722 | std::string(tag_to_keyword(tag)) + " " + build |
---|
| 723 | ); |
---|
| 724 | } |
---|
| 725 | } |
---|
| 726 | default: |
---|
| 727 | { |
---|
| 728 | fprintf(stderr, "unknown tag %s\n", die.get_tag_name()); |
---|
| 729 | exit(1); |
---|
| 730 | } |
---|
| 731 | } |
---|
| 732 | return {"<unknown>", "<unknown>"}; |
---|
| 733 | }*/ |
---|
| 734 | |
---|
| 735 | bool is_mangled_name(const std::string& name) { |
---|
| 736 | return name.find("_Z") || name.find("?h@@"); |
---|
| 737 | } |
---|
| 738 | |
---|
| 739 | void retrieve_symbol_for_subprogram( |
---|
| 740 | Dwarf_Debug dbg, |
---|
| 741 | const die_object& die, |
---|
| 742 | Dwarf_Addr pc, |
---|
| 743 | Dwarf_Half dwversion, |
---|
| 744 | stacktrace_frame& frame |
---|
| 745 | ) { |
---|
| 746 | assert(die.get_tag() == DW_TAG_subprogram); |
---|
| 747 | optional<std::string> name; |
---|
| 748 | if(auto linkage_name = die.get_string_attribute(DW_AT_linkage_name)) { |
---|
| 749 | name = std::move(linkage_name); |
---|
| 750 | } else if(auto linkage_name = die.get_string_attribute(DW_AT_MIPS_linkage_name)) { |
---|
| 751 | name = std::move(linkage_name); |
---|
| 752 | } else if(auto linkage_name = die.get_string_attribute(DW_AT_name)) { |
---|
| 753 | name = std::move(linkage_name); |
---|
| 754 | } |
---|
| 755 | if(name) { |
---|
| 756 | frame.symbol = std::move(name).unwrap(); |
---|
| 757 | } else { |
---|
| 758 | if(die.has_attr(DW_AT_specification)) { |
---|
| 759 | die_object spec = die.resolve_reference_attribute(DW_AT_specification); |
---|
| 760 | // TODO: Passing pc here is misleading |
---|
| 761 | return retrieve_symbol_for_subprogram(dbg, spec, pc, dwversion, frame); |
---|
| 762 | } |
---|
| 763 | } |
---|
| 764 | // TODO: Handle namespaces |
---|
| 765 | // TODO: Disabled for now |
---|
| 766 | /*std::string name = die.get_name(); |
---|
| 767 | std::vector<std::string> params; |
---|
| 768 | auto child = die.get_child(); |
---|
| 769 | if(child) { |
---|
| 770 | walk_die_list_recursive( |
---|
| 771 | dbg, |
---|
| 772 | child, |
---|
| 773 | [pc, dwversion, &frame, ¶ms] (Dwarf_Debug dbg, const die_object& die) { |
---|
| 774 | if(die.get_tag() == DW_TAG_formal_parameter) { |
---|
| 775 | // TODO: Ignore DW_AT_artificial |
---|
| 776 | params.push_back(resolve_type(dbg, get_type_die(dbg, die))); |
---|
| 777 | } |
---|
| 778 | } |
---|
| 779 | ); |
---|
| 780 | } else { |
---|
| 781 | fprintf(stderr, "no child %s\n", name.c_str()); |
---|
| 782 | } |
---|
| 783 | frame.symbol = name + "(" + join(params, ", ") + ")";*/ |
---|
| 784 | } |
---|
| 785 | |
---|
| 786 | void retrieve_symbol( |
---|
| 787 | Dwarf_Debug dbg, |
---|
| 788 | const die_object& die, |
---|
| 789 | Dwarf_Addr pc, |
---|
| 790 | Dwarf_Half dwversion, |
---|
| 791 | stacktrace_frame& frame |
---|
| 792 | ) { |
---|
| 793 | walk_die_list( |
---|
| 794 | dbg, |
---|
| 795 | die, |
---|
| 796 | [pc, dwversion, &frame] (Dwarf_Debug dbg, const die_object& die) { |
---|
| 797 | if(dump_dwarf) { |
---|
| 798 | fprintf( |
---|
| 799 | stderr, |
---|
| 800 | "-------------> %d %s %s\n", |
---|
| 801 | dwversion, |
---|
| 802 | die.get_tag_name(), |
---|
| 803 | die.get_name().c_str() |
---|
| 804 | ); |
---|
| 805 | } |
---|
| 806 | |
---|
| 807 | if(!pc_in_die(dbg, die.get(), dwversion, pc)) { |
---|
| 808 | if(dump_dwarf) { |
---|
| 809 | fprintf(stderr, "pc not in die\n"); |
---|
| 810 | } |
---|
| 811 | } else { |
---|
| 812 | if(trace_dwarf) { |
---|
| 813 | fprintf( |
---|
| 814 | stderr, |
---|
| 815 | "pc in die %08llx %s\n", |
---|
| 816 | (unsigned long long) die.get_global_offset(), |
---|
| 817 | die.get_tag_name() |
---|
| 818 | ); |
---|
| 819 | } |
---|
| 820 | if(dump_dwarf) { |
---|
| 821 | fprintf(stderr, "pc in die <-----------------------------------\n"); |
---|
| 822 | } |
---|
| 823 | if(die.get_tag() == DW_TAG_subprogram) { |
---|
| 824 | retrieve_symbol_for_subprogram(dbg, die, pc, dwversion, frame); |
---|
| 825 | } |
---|
| 826 | auto child = die.get_child(); |
---|
| 827 | if(child) { |
---|
| 828 | retrieve_symbol(dbg, child, pc, dwversion, frame); |
---|
| 829 | } else { |
---|
| 830 | if(dump_dwarf) { |
---|
| 831 | fprintf(stderr, "(no child)\n"); |
---|
| 832 | } |
---|
| 833 | } |
---|
| 834 | } |
---|
| 835 | } |
---|
| 836 | ); |
---|
| 837 | } |
---|
| 838 | |
---|
| 839 | void retrieve_line_info( |
---|
| 840 | Dwarf_Debug dbg, |
---|
| 841 | const die_object& die, |
---|
| 842 | Dwarf_Addr pc, |
---|
| 843 | Dwarf_Half dwversion, |
---|
| 844 | stacktrace_frame& frame |
---|
| 845 | ) { |
---|
| 846 | Dwarf_Unsigned version; |
---|
| 847 | Dwarf_Small table_count; |
---|
| 848 | Dwarf_Line_Context ctxt; |
---|
| 849 | Dwarf_Bool is_found = false; |
---|
| 850 | (void)dwversion; |
---|
| 851 | int ret = dwarf_srclines_b( |
---|
| 852 | die.get(), |
---|
| 853 | &version, |
---|
| 854 | &table_count, |
---|
| 855 | &ctxt, |
---|
| 856 | nullptr |
---|
| 857 | ); |
---|
| 858 | if(ret == DW_DLV_NO_ENTRY) { |
---|
| 859 | fprintf(stderr, "dwarf_srclines_b error\n"); |
---|
| 860 | return; |
---|
| 861 | } |
---|
| 862 | if(table_count == 1) { |
---|
| 863 | Dwarf_Line *linebuf = 0; |
---|
| 864 | Dwarf_Signed linecount = 0; |
---|
| 865 | Dwarf_Addr prev_lineaddr = 0; |
---|
| 866 | |
---|
| 867 | dwarf_srclines_from_linecontext(ctxt, &linebuf, |
---|
| 868 | &linecount, nullptr); |
---|
| 869 | Dwarf_Line prev_line = 0; |
---|
| 870 | for(int i = 0; i < linecount; i++) { |
---|
| 871 | Dwarf_Line line = linebuf[i]; |
---|
| 872 | Dwarf_Addr lineaddr = 0; |
---|
| 873 | |
---|
| 874 | dwarf_lineaddr(line, &lineaddr, nullptr); |
---|
| 875 | if(pc == lineaddr) { |
---|
| 876 | /* Print the last line entry containing current pc. */ |
---|
| 877 | Dwarf_Line last_pc_line = line; |
---|
| 878 | |
---|
| 879 | for(int j = i + 1; j < linecount; j++) { |
---|
| 880 | Dwarf_Line j_line = linebuf[j]; |
---|
| 881 | dwarf_lineaddr(j_line, &lineaddr, nullptr); |
---|
| 882 | |
---|
| 883 | if(pc == lineaddr) { |
---|
| 884 | last_pc_line = j_line; |
---|
| 885 | } |
---|
| 886 | } |
---|
| 887 | is_found = true; |
---|
| 888 | print_line(dbg, last_pc_line, pc, frame); |
---|
| 889 | break; |
---|
| 890 | } else if(prev_line && pc > prev_lineaddr && |
---|
| 891 | pc < lineaddr) { |
---|
| 892 | is_found = true; |
---|
| 893 | print_line(dbg, prev_line, pc, frame); |
---|
| 894 | break; |
---|
| 895 | } |
---|
| 896 | Dwarf_Bool is_lne; |
---|
| 897 | dwarf_lineendsequence(line, &is_lne, nullptr); |
---|
| 898 | if(is_lne) { |
---|
| 899 | prev_line = 0; |
---|
| 900 | } else { |
---|
| 901 | prev_lineaddr = lineaddr; |
---|
| 902 | prev_line = line; |
---|
| 903 | } |
---|
| 904 | } |
---|
| 905 | } |
---|
| 906 | dwarf_srclines_dealloc_b(ctxt); |
---|
| 907 | } |
---|
| 908 | |
---|
| 909 | void walk_compilation_units(Dwarf_Debug dbg, Dwarf_Addr pc, stacktrace_frame& frame) { |
---|
| 910 | // 0 passed as the dieto the first call of dwarf_siblingof_b immediately after dwarf_next_cu_header_d to |
---|
| 911 | // fetch the cu die |
---|
| 912 | die_object cu_die(dbg, nullptr); |
---|
| 913 | cu_die = cu_die.get_sibling(); |
---|
| 914 | if(!cu_die) { |
---|
| 915 | if(dump_dwarf) { |
---|
| 916 | fprintf(stderr, "End walk_compilation_units\n"); |
---|
| 917 | } |
---|
| 918 | return; |
---|
| 919 | } |
---|
| 920 | walk_die_list( |
---|
| 921 | dbg, |
---|
| 922 | cu_die, |
---|
| 923 | [&frame, pc] (Dwarf_Debug dbg, const die_object& cu_die) { |
---|
| 924 | Dwarf_Half offset_size = 0; |
---|
| 925 | Dwarf_Half dwversion = 0; |
---|
| 926 | dwarf_get_version_of_die(cu_die.get(), &dwversion, &offset_size); |
---|
| 927 | if(trace_dwarf) { |
---|
| 928 | fprintf(stderr, "CU: %d %s\n", dwversion, cu_die.get_name().c_str()); |
---|
| 929 | } |
---|
| 930 | /*auto child = cu_die.get_child(); |
---|
| 931 | if(child) { |
---|
| 932 | walk_die_list_recursive( |
---|
| 933 | dbg, |
---|
| 934 | child, |
---|
| 935 | [&frame, pc, dwversion] (Dwarf_Debug dbg, const die_object& cu_die) { |
---|
| 936 | |
---|
| 937 | } |
---|
| 938 | ); |
---|
| 939 | }*/ |
---|
| 940 | //walk_die(dbg, cu_die, pc, dwversion, false, frame); |
---|
| 941 | if(pc_in_die(dbg, cu_die.get(), dwversion, pc)) { |
---|
| 942 | retrieve_line_info(dbg, cu_die, pc, dwversion, frame); |
---|
| 943 | retrieve_symbol(dbg, cu_die, pc, dwversion, frame); |
---|
| 944 | } |
---|
| 945 | } |
---|
| 946 | ); |
---|
| 947 | } |
---|
| 948 | |
---|
| 949 | void walk_dbg(Dwarf_Debug dbg, Dwarf_Addr pc, stacktrace_frame& frame) { |
---|
| 950 | // libdwarf keeps track of where it is in the file, dwarf_next_cu_header_d is statefull |
---|
| 951 | Dwarf_Unsigned next_cu_header; |
---|
| 952 | Dwarf_Half header_cu_type; |
---|
| 953 | while(true) { |
---|
| 954 | int ret = dwarf_next_cu_header_d( |
---|
| 955 | dbg, |
---|
| 956 | true, |
---|
| 957 | nullptr, |
---|
| 958 | nullptr, |
---|
| 959 | nullptr, |
---|
| 960 | nullptr, |
---|
| 961 | nullptr, |
---|
| 962 | nullptr, |
---|
| 963 | nullptr, |
---|
| 964 | nullptr, |
---|
| 965 | &next_cu_header, |
---|
| 966 | &header_cu_type, |
---|
| 967 | nullptr |
---|
| 968 | ); |
---|
| 969 | if(ret == DW_DLV_NO_ENTRY) { |
---|
| 970 | if(dump_dwarf) { |
---|
| 971 | fprintf(stderr, "End walk_dbg\n"); |
---|
| 972 | } |
---|
| 973 | return; |
---|
| 974 | } |
---|
| 975 | if(ret != DW_DLV_OK) { |
---|
| 976 | fprintf(stderr, "Error\n"); |
---|
| 977 | return; |
---|
| 978 | } |
---|
| 979 | walk_compilation_units(dbg, pc, frame); |
---|
| 980 | } |
---|
| 981 | } |
---|
| 982 | |
---|
| 983 | void lookup_pc( |
---|
| 984 | const char* object, |
---|
| 985 | Dwarf_Addr pc, |
---|
| 986 | stacktrace_frame& frame |
---|
| 987 | ) { |
---|
| 988 | if(dump_dwarf) { |
---|
| 989 | fprintf(stderr, "%s\n", object); |
---|
| 990 | fprintf(stderr, "%llx\n", pc); |
---|
| 991 | } |
---|
| 992 | Dwarf_Debug dbg; |
---|
| 993 | Dwarf_Ptr errarg = 0; |
---|
| 994 | auto ret = dwarf_init_path( |
---|
| 995 | object, |
---|
| 996 | nullptr, |
---|
| 997 | 0, |
---|
| 998 | DW_GROUPNUMBER_ANY, |
---|
| 999 | err_handler, |
---|
| 1000 | errarg, |
---|
| 1001 | &dbg, |
---|
| 1002 | nullptr |
---|
| 1003 | ); |
---|
| 1004 | if(ret == DW_DLV_NO_ENTRY) { |
---|
| 1005 | // fail, no debug info |
---|
| 1006 | } else if(ret != DW_DLV_OK) { |
---|
| 1007 | fprintf(stderr, "Error\n"); |
---|
| 1008 | } else { |
---|
| 1009 | walk_dbg(dbg, pc, frame); |
---|
| 1010 | } |
---|
| 1011 | dwarf_finish(dbg); |
---|
| 1012 | } |
---|
| 1013 | |
---|
| 1014 | stacktrace_frame resolve_frame(const dlframe& frame_info) { |
---|
| 1015 | stacktrace_frame frame{}; |
---|
| 1016 | frame.filename = frame_info.obj_path; |
---|
| 1017 | frame.symbol = frame_info.symbol; |
---|
| 1018 | frame.address = frame_info.raw_address; |
---|
| 1019 | std::string obj_path = frame_info.obj_path; |
---|
| 1020 | #if IS_APPLE |
---|
| 1021 | //std::string obj_path = frame_info.obj_path; |
---|
| 1022 | //char* dir = dirname(obj_path.data()); |
---|
| 1023 | //std::string dsym = |
---|
| 1024 | if(directory_exists(obj_path + ".dSYM")) { |
---|
| 1025 | obj_path += ".dSYM/Contents/Resources/DWARF/" + basename(frame_info.obj_path); |
---|
| 1026 | } |
---|
| 1027 | #endif |
---|
| 1028 | if(trace_dwarf) { |
---|
| 1029 | fprintf( |
---|
| 1030 | stderr, |
---|
| 1031 | "%s %08llx %s\n", |
---|
| 1032 | obj_path.c_str(), |
---|
| 1033 | (unsigned long long)frame_info.obj_address, |
---|
| 1034 | frame_info.symbol.c_str() |
---|
| 1035 | ); |
---|
| 1036 | } |
---|
| 1037 | lookup_pc( |
---|
| 1038 | obj_path.c_str(), |
---|
| 1039 | frame_info.obj_address, |
---|
| 1040 | frame |
---|
| 1041 | ); |
---|
| 1042 | return frame; |
---|
| 1043 | } |
---|
| 1044 | |
---|
| 1045 | std::vector<stacktrace_frame> resolve_frames(const std::vector<void*>& frames) { |
---|
| 1046 | std::vector<stacktrace_frame> trace; |
---|
| 1047 | trace.reserve(frames.size()); |
---|
| 1048 | for(const auto& frame : get_frames_object_info(frames)) { |
---|
| 1049 | trace.push_back(resolve_frame(frame)); |
---|
| 1050 | } |
---|
| 1051 | return trace; |
---|
| 1052 | } |
---|
| 1053 | } |
---|
| 1054 | } |
---|
| 1055 | } |
---|
| 1056 | |
---|
| 1057 | #endif |
---|