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Experiments with DW_AT_rnglists_base

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Jeremy 2023-09-15 16:46:48 -04:00
parent 07a3ac1e41
commit 8208f43e8a
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GPG Key ID: 19AA8270105E8EB4
1 changed files with 26 additions and 3 deletions
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29
src/symbols/symbols_with_libdwarf.cpp
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@ -948,9 +948,32 @@ namespace cpptrace {
); );
}*/ }*/
//walk_die(dbg, cu_die, pc, dwversion, false, frame); //walk_die(dbg, cu_die, pc, dwversion, false, frame);
if(pc_in_die(dbg, cu_die.get(), dwversion, pc)) { Dwarf_Unsigned offset = 0;
retrieve_line_info(dbg, cu_die, pc, dwversion, frame); // TODO: I'm unsure if I'm supposed to take DW_AT_rnglists_base into account here
retrieve_symbol(dbg, cu_die, pc, dwversion, frame); // However it looks like it is correct when not taking an offset into account and incorrect
// otherwise
//if(dwversion >= 5) {
// Dwarf_Attribute attr;
// int ret = dwarf_attr(cu_die.get(), DW_AT_rnglists_base, &attr, nullptr);
// assert(ret == DW_DLV_OK);
// Dwarf_Unsigned uval = 0;
// ret = dwarf_global_formref(attr, &uval, nullptr);
// offset = uval;
// dwarf_dealloc_attribute(attr);
//}
//fprintf(stderr, "------------> pc: %llx offset: %llx final: %llx\n", pc, offset, pc - offset);
if(pc_in_die(dbg, cu_die.get(), dwversion, pc - offset)) {
if(trace_dwarf) {
fprintf(
stderr,
"pc in die %08llx %s (now searching for %08llx)\n",
(unsigned long long) cu_die.get_global_offset(),
cu_die.get_tag_name(),
pc - offset
);
}
retrieve_line_info(dbg, cu_die, pc, dwversion, frame); // no offset for line info
retrieve_symbol(dbg, cu_die, pc - offset, dwversion, frame);
} }
} }
); );