Author: labath Date: Wed Apr 22 04:47:21 2015 New Revision: 235493 URL: http://llvm.org/viewvc/llvm-project?rev=235493&view=rev Log: [DWARF CFI] Add support for DW_CFA_def_cfa_sf when parsing CIE
Summary: Just what it says on the box. Reviewers: jasonmolenda Subscribers: lldb-commits Differential Revision: http://reviews.llvm.org/D9150 Modified: lldb/trunk/source/Symbol/DWARFCallFrameInfo.cpp Modified: lldb/trunk/source/Symbol/DWARFCallFrameInfo.cpp URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Symbol/DWARFCallFrameInfo.cpp?rev=235493&r1=235492&r2=235493&view=diff ============================================================================== --- lldb/trunk/source/Symbol/DWARFCallFrameInfo.cpp (original) +++ lldb/trunk/source/Symbol/DWARFCallFrameInfo.cpp Wed Apr 22 04:47:21 2015 @@ -287,6 +287,19 @@ DWARFCallFrameInfo::ParseCIE (const dw_o cie_sp->initial_row.GetCFAValue().SetIsRegisterPlusOffset (reg_num, op_offset); continue; } + if (extended_opcode == DW_CFA_def_cfa_sf) + { + // The DW_CFA_def_cfa_sf instruction takes two operands: an unsigned LEB128 value + // representing a register number and a signed LEB128 factored offset. This + // instruction is identical to DW_CFA_def_cfa except that the second operand is + // signed and factored. + // The resulting offset is factored_offset * data_alignment_factor. + uint32_t reg_num = (uint32_t)m_cfi_data.GetULEB128(&offset); + int op_offset = (int32_t)m_cfi_data.GetSLEB128(&offset); + cie_sp->initial_row.GetCFAValue().SetIsRegisterPlusOffset ( + reg_num, op_offset * cie_sp->data_align); + continue; + } if (primary_opcode == DW_CFA_offset) { // 0x80 - high 2 bits are 0x2, lower 6 bits are register. _______________________________________________ lldb-commits mailing list lldb-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/lldb-commits
