m_fde_index_initialized = true;
return;
}
+
+ // An FDE entry contains CIE_pointer in debug_frame in same place as cie_id
+ // in eh_frame. CIE_pointer is an offset into the .debug_frame section.
+ // So, variable cie_offset should be equal cie_id for debug_frame.
+ // FDE entries with cie_id == 0 shouldn't be ignored for it.
+ if ((cie_id == 0 && m_is_eh_frame) || cie_id == UINT32_MAX || len == 0) {
+ m_cie_map[current_entry] = ParseCIE(current_entry);
+ offset = next_entry;
+ continue;
+ }
+
+ if (!m_is_eh_frame)
+ cie_offset = cie_id;
+
if (cie_offset > m_cfi_data.GetByteSize()) {
- Host::SystemLog(
- Host::eSystemLogError,
- "error: Invalid cie offset of 0x%x found in cie/fde at 0x%x\n",
- cie_offset, current_entry);
+ Host::SystemLog(Host::eSystemLogError,
+ "error: Invalid cie offset of 0x%x "
+ "found in cie/fde at 0x%x\n",
+ cie_offset, current_entry);
// Don't trust anything in this eh_frame section if we find blatantly
// invalid data.
m_fde_index.Clear();
return;
}
- if (cie_id == 0 || cie_id == UINT32_MAX || len == 0) {
- m_cie_map[current_entry] = ParseCIE(current_entry);
- offset = next_entry;
- continue;
- }
-
const CIE *cie = GetCIE(cie_offset);
if (cie) {
const lldb::addr_t pc_rel_addr = m_section_sp->GetFileAddress();
cie_offset = m_cfi_data.GetU32(&offset);
}
- assert(cie_offset != 0 && cie_offset != UINT32_MAX);
+ // FDE entries with zero cie_offset may occur for debug_frame.
+ assert(!(m_is_eh_frame && 0 == cie_offset) && cie_offset != UINT32_MAX);
// Translate the CIE_id from the eh_frame format, which
// is relative to the FDE offset, into a __eh_frame section
if (sect.get()) {
m_eh_frame_up.reset(new DWARFCallFrameInfo(m_object_file, sect,
eRegisterKindEHFrame, true));
+ } else {
+ // Try to find .debug_frame section if .eh_frame doesn't exist.
+ sect = sl->FindSectionByType(eSectionTypeDWARFDebugFrame, true);
+ if (sect.get()) {
+ m_eh_frame_up.reset(new DWARFCallFrameInfo(m_object_file, sect,
+ eRegisterKindDWARF, false));
+ }
}
sect = sl->FindSectionByType(eSectionTypeCompactUnwind, true);
if (sect.get()) {