From ee7c0d2f931590ccdc53a14b1839e11bb29fc96e Mon Sep 17 00:00:00 2001 From: Andrew Kaylor Date: Fri, 25 Jan 2013 22:50:58 +0000 Subject: Add support for applying in-memory relocations to the .debug_line section and, in the case of ELF files, using symbol addresses when available for relocations to the .debug_info section. Also extending the llvm-rtdyld tool to add the ability to dump line number information for testing purposes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173517 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/DebugInfo/DWARFDebugLine.cpp | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) (limited to 'lib/DebugInfo/DWARFDebugLine.cpp') diff --git a/lib/DebugInfo/DWARFDebugLine.cpp b/lib/DebugInfo/DWARFDebugLine.cpp index 267364adfa..16ef896ca7 100644 --- a/lib/DebugInfo/DWARFDebugLine.cpp +++ b/lib/DebugInfo/DWARFDebugLine.cpp @@ -155,7 +155,7 @@ DWARFDebugLine::getOrParseLineTable(DataExtractor debug_line_data, if (pos.second) { // Parse and cache the line table for at this offset. State state; - if (!parseStatementTable(debug_line_data, &offset, state)) + if (!parseStatementTable(debug_line_data, RelocMap, &offset, state)) return 0; pos.first->second = state; } @@ -219,7 +219,8 @@ DWARFDebugLine::parsePrologue(DataExtractor debug_line_data, } bool -DWARFDebugLine::parseStatementTable(DataExtractor debug_line_data, +DWARFDebugLine::parseStatementTable(DataExtractor debug_line_data, + const RelocAddrMap *RMap, uint32_t *offset_ptr, State &state) { const uint32_t debug_line_offset = *offset_ptr; @@ -268,7 +269,15 @@ DWARFDebugLine::parseStatementTable(DataExtractor debug_line_data, // relocatable address. All of the other statement program opcodes // that affect the address register add a delta to it. This instruction // stores a relocatable value into it instead. - state.Address = debug_line_data.getAddress(offset_ptr); + { + // If this address is in our relocation map, apply the relocation. + RelocAddrMap::const_iterator AI = RMap->find(*offset_ptr); + if (AI != RMap->end()) { + const std::pair &R = AI->second; + state.Address = debug_line_data.getAddress(offset_ptr) + R.second; + } else + state.Address = debug_line_data.getAddress(offset_ptr); + } break; case DW_LNE_define_file: -- cgit v1.2.3