ld64-351.8.tar.gz

[apple/ld64.git] / src / ld / OutputFile.cpp

diff --git a/src/ld/OutputFile.cpp b/src/ld/OutputFile.cpp
index 62e052e450913ece5cf2f2ce62ed94380dacb8a9..e5059d55e89838551167889412e9f08f5029c442 100644 (file)
--- a/src/ld/OutputFile.cpp
+++ b/src/ld/OutputFile.cpp
@@ -5311,16 +5311,23 @@ void OutputFile::synthesizeDebugNotes(ld::Internal& state)
        std::sort(atomsNeedingDebugNotes.begin(), atomsNeedingDebugNotes.end(), DebugNoteSorter());
 
        // <rdar://problem/17689030> Add -add_ast_path option to linker which add N_AST stab entry to output
+       std::set<std::string> seenAstPaths;
        const std::vector<const char*>& astPaths = _options.astFilePaths();
        for (std::vector<const char*>::const_iterator it=astPaths.begin(); it != astPaths.end(); it++) {
                const char* path = *it;
+               if ( seenAstPaths.count(path) != 0 )
+                       continue;
+               seenAstPaths.insert(path);
                //  emit N_AST
                ld::relocatable::File::Stab astStab;
                astStab.atom    = NULL;
                astStab.type    = N_AST;
                astStab.other   = 0;
                astStab.desc    = 0;
-               astStab.value   = fileModTime(path);
+               if ( _options.zeroModTimeInDebugMap() )
+                       astStab.value = 0;
+               else
+                       astStab.value = fileModTime(path);
                astStab.string  = path;
                state.stabs.push_back(astStab);
        }
@@ -5387,11 +5394,17 @@ void OutputFile::synthesizeDebugNotes(ld::Internal& state)
                                objStab.desc            = 1;
                                if ( atomObjFile != NULL ) {
                                        objStab.string  = assureFullPath(atomObjFile->debugInfoPath());
-                                       objStab.value   = atomObjFile->debugInfoModificationTime();
+                                       if ( _options.zeroModTimeInDebugMap() )
+                                               objStab.value   = 0;
+                                       else
+                                               objStab.value   = atomObjFile->debugInfoModificationTime();
                                }
                                else {
                                        objStab.string  = assureFullPath(atomFile->path());
-                                       objStab.value   = atomFile->modificationTime();
+                                       if ( _options.zeroModTimeInDebugMap() )
+                                               objStab.value   = 0;
+                                       else
+                                               objStab.value   = atomFile->modificationTime();
                                }
                                state.stabs.push_back(objStab);
                                wroteStartSO = true;
@@ -5401,6 +5414,25 @@ void OutputFile::synthesizeDebugNotes(ld::Internal& state)
                                asprintf(&fullFilePath, "%s%s", newDirPath, newFilename);
                                // add both leaf path and full path
                                seenFiles.insert(fullFilePath);
+
+                               // <rdar://problem/34121435> Add linker support for propagating N_AST debug notes from .o files to linked image
+                               if ( const std::vector<relocatable::File::AstTimeAndPath>* asts = atomObjFile->astFiles() ) {
+                                       for (const relocatable::File::AstTimeAndPath& file : *asts) {
+                                               const char* cpath = file.path.c_str();
+                                               if ( seenAstPaths.count(cpath) != 0 )
+                                                       continue;
+                                               seenAstPaths.insert(cpath);
+                                               //  generate N_AST in output
+                                               ld::relocatable::File::Stab astStab;
+                                               astStab.atom    = NULL;
+                                               astStab.type    = N_AST;
+                                               astStab.other   = 0;
+                                               astStab.desc    = 0;
+                                               astStab.value   = file.time;
+                                               astStab.string  = cpath;
+                                               state.stabs.push_back(astStab);
+                                       }
+                               }
                        }
                        filename = newFilename;
                        dirPath = newDirPath;
@@ -5534,6 +5566,7 @@ void OutputFile::synthesizeDebugNotes(ld::Internal& state)
                        }
                }
        }
+
 }