COFF: Set section permissions

Summary:
This enables us to reason about whether a given address can be
executable, for instance during unwinding.

Reviewers: amccarth, mstorsjo

Subscribers: lldb-commits

Differential Revision: https://reviews.llvm.org/D69102

1 files changed, 10 insertions, 0 deletions

diff --git a/lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp b/lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
index 8fa9e2000cf..fbc5be17fa6 100644
--- a/lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
+++ b/lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp
@@ -797,6 +797,7 @@ void ObjectFilePECOFF::CreateSections(SectionList &unified_section_list) {
         /*file_offset*/ 0, m_coff_header_opt.header_size,
         m_coff_header_opt.sect_alignment,
         /*flags*/ 0);
+    header_sp->SetPermissions(ePermissionsReadable);
     m_sections_up->AddSection(header_sp);
     unified_section_list.AddSection(header_sp);
 
@@ -919,6 +920,15 @@ void ObjectFilePECOFF::CreateSections(SectionList &unified_section_list) {
           m_coff_header_opt.sect_alignment, // Section alignment
           m_sect_headers[idx].flags));      // Flags for this section
 
+      uint32_t permissions = 0;
+      if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_EXECUTE)
+        permissions |= ePermissionsExecutable;
+      if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_READ)
+        permissions |= ePermissionsReadable;
+      if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_WRITE)
+        permissions |= ePermissionsWritable;
+      section_sp->SetPermissions(permissions);
+
       m_sections_up->AddSection(section_sp);
       unified_section_list.AddSection(section_sp);
     }