[mach-o] add representation for LC_ID_DYLIB to MachONormalizedFile
It still needs to be tied into BinaryReader, but this allows reasonably
sensible creation of SharedLibrary atoms on MachO.
llvm-svn: 212093
diff --git a/lld/lib/ReaderWriter/MachO/MachONormalizedFileBinaryWriter.cpp b/lld/lib/ReaderWriter/MachO/MachONormalizedFileBinaryWriter.cpp
index 2f61607..755e9aa 100644
--- a/lld/lib/ReaderWriter/MachO/MachONormalizedFileBinaryWriter.cpp
+++ b/lld/lib/ReaderWriter/MachO/MachONormalizedFileBinaryWriter.cpp
@@ -324,6 +324,12 @@
size += segCommandSize;
++count;
+ // If creating a dylib, add LC_ID_DYLIB.
+ if (_file.fileType == llvm::MachO::MH_DYLIB) {
+ size += sizeof(dylib_command) + pointerAlign(_file.installName.size() + 1);
+ ++count;
+ }
+
// Add LC_DYLD_INFO
size += sizeof(dyld_info_command);
++count;
@@ -621,6 +627,24 @@
else
ec = writeSegmentLoadCommands<MachO32Trait>(lc);
+ // Add LC_ID_DYLIB command for dynamic libraries.
+ if (_file.fileType == llvm::MachO::MH_DYLIB) {
+ dylib_command *dc = reinterpret_cast<dylib_command*>(lc);
+ StringRef path = _file.installName;
+ uint32_t size = sizeof(dylib_command) + pointerAlign(path.size() + 1);
+ dc->cmd = LC_ID_DYLIB;
+ dc->cmdsize = size;
+ dc->dylib.name = sizeof(dylib_command); // offset
+ dc->dylib.timestamp = 0; // FIXME
+ dc->dylib.current_version = 0; // FIXME
+ dc->dylib.compatibility_version = 0; // FIXME
+ if (_swap)
+ swapStruct(*dc);
+ memcpy(lc + sizeof(dylib_command), path.begin(), path.size());
+ lc[sizeof(dylib_command) + path.size()] = '\0';
+ lc += size;
+ }
+
// Add LC_DYLD_INFO_ONLY.
dyld_info_command* di = reinterpret_cast<dyld_info_command*>(lc);
di->cmd = LC_DYLD_INFO_ONLY;
@@ -720,7 +744,6 @@
lc[sizeof(dylib_command)+dep.path.size()] = '\0';
lc += size;
}
-
}
return ec;
}