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Change RegisterContextLLDB's unwind logging to report which stack frame 

finally was able to restore a register, instead of just reporting the
frames that couldn't supply the reg.

llvm-svn: 168139
This commit is contained in:
Jason Molenda 2012-11-16 06:15:40 +00:00
parent 26b9580d87
commit c78555c540
1 changed files with 12 additions and 4 deletions
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16
lldb/source/Plugins/Process/Utility/RegisterContextLLDB.cpp
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@ -914,6 +914,7 @@ RegisterContextLLDB::SavedLocationForRegister (uint32_t lldb_regnum, lldb_privat
if (iterator != m_registers.end())
{
regloc = iterator->second;
UnwindLogMsg ("supplying caller's saved reg %d's location, cached", lldb_regnum);
return UnwindLLDB::RegisterSearchResult::eRegisterFound;
}
}
@ -937,6 +938,7 @@ RegisterContextLLDB::SavedLocationForRegister (uint32_t lldb_regnum, lldb_privat
regloc.type = UnwindLLDB::RegisterLocation::eRegisterValueInferred;
regloc.location.inferred_value = m_cfa;
m_registers[lldb_regnum] = regloc;
UnwindLogMsg ("supplying caller's stack pointer (%d) value, computed from CFA", lldb_regnum);
return UnwindLLDB::RegisterSearchResult::eRegisterFound;
}
@ -1076,6 +1078,7 @@ RegisterContextLLDB::SavedLocationForRegister (uint32_t lldb_regnum, lldb_privat
new_regloc.location.register_number = lldb_regnum;
m_registers[lldb_regnum] = new_regloc;
regloc = new_regloc;
UnwindLogMsg ("supplying caller's register %d from the live RegisterContext at frame 0", lldb_regnum);
return UnwindLLDB::RegisterSearchResult::eRegisterFound;
}
else
@ -1112,6 +1115,7 @@ RegisterContextLLDB::SavedLocationForRegister (uint32_t lldb_regnum, lldb_privat
regloc.type = UnwindLLDB::RegisterLocation::eRegisterValueInferred;
regloc.location.inferred_value = m_cfa + offset;
m_registers[lldb_regnum] = regloc;
UnwindLogMsg ("supplying caller's register %d, value is CFA plus offset", lldb_regnum);
return UnwindLLDB::RegisterSearchResult::eRegisterFound;
}
@ -1121,6 +1125,7 @@ RegisterContextLLDB::SavedLocationForRegister (uint32_t lldb_regnum, lldb_privat
regloc.type = UnwindLLDB::RegisterLocation::eRegisterSavedAtMemoryLocation;
regloc.location.target_memory_location = m_cfa + offset;
m_registers[lldb_regnum] = regloc;
UnwindLogMsg ("supplying caller's register %d from the stack, saved at CFA plus offset", lldb_regnum);
return UnwindLLDB::RegisterSearchResult::eRegisterFound;
}
@ -1136,6 +1141,7 @@ RegisterContextLLDB::SavedLocationForRegister (uint32_t lldb_regnum, lldb_privat
regloc.type = UnwindLLDB::RegisterLocation::eRegisterInRegister;
regloc.location.register_number = row_regnum_in_lldb;
m_registers[lldb_regnum] = regloc;
UnwindLogMsg ("supplying caller's register %d, saved in register %d", lldb_regnum, row_regnum_in_lldb);
return UnwindLLDB::RegisterSearchResult::eRegisterFound;
}
@ -1157,14 +1163,16 @@ RegisterContextLLDB::SavedLocationForRegister (uint32_t lldb_regnum, lldb_privat
regloc.type = UnwindLLDB::RegisterLocation::eRegisterValueInferred;
regloc.location.inferred_value = val;
m_registers[lldb_regnum] = regloc;
UnwindLogMsg ("supplying caller's register %d via DWARF expression (IsDWARFExpression)", lldb_regnum);
return UnwindLLDB::RegisterSearchResult::eRegisterFound;
}
else
{
regloc.type = UnwindLLDB::RegisterLocation::eRegisterSavedAtMemoryLocation;
regloc.location.target_memory_location = val;
m_registers[lldb_regnum] = regloc;
return UnwindLLDB::RegisterSearchResult::eRegisterFound;
regloc.type = UnwindLLDB::RegisterLocation::eRegisterSavedAtMemoryLocation;
regloc.location.target_memory_location = val;
m_registers[lldb_regnum] = regloc;
UnwindLogMsg ("supplying caller's register %d via DWARF expression (IsAtDWARFExpression)", lldb_regnum);
return UnwindLLDB::RegisterSearchResult::eRegisterFound;
}
}
UnwindLogMsg ("tried to use IsDWARFExpression or IsAtDWARFExpression for reg %d but failed", lldb_regnum);