1 files changed, 48 insertions, 0 deletions
diff --git a/lld/MachO/InputSection.cpp b/lld/MachO/InputSection.cpp
new file mode 100644
index 000000000000..72d489283051
--- /dev/null
+++ b/lld/MachO/InputSection.cpp
@@ -0,0 +1,48 @@
+//===- InputSection.cpp ---------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "InputSection.h"
+#include "OutputSegment.h"
+#include "Symbols.h"
+#include "Target.h"
+#include "lld/Common/Memory.h"
+#include "llvm/Support/Endian.h"
+
+using namespace llvm;
+using namespace llvm::MachO;
+using namespace llvm::support;
+using namespace lld;
+using namespace lld::macho;
+
+std::vector<InputSection *> macho::inputSections;
+
+uint64_t InputSection::getFileOffset() const {
+  return parent->fileOff + outSecFileOff;
+}
+
+uint64_t InputSection::getVA() const { return parent->addr + outSecOff; }
+
+void InputSection::writeTo(uint8_t *buf) {
+  if (getFileSize() == 0)
+    return;
+
+  memcpy(buf, data.data(), data.size());
+
+  for (Reloc &r : relocs) {
+    uint64_t va = 0;
+    if (auto *s = r.target.dyn_cast<Symbol *>())
+      va = target->getSymbolVA(*s, r.type);
+    else if (auto *isec = r.target.dyn_cast<InputSection *>())
+      va = isec->getVA();
+
+    uint64_t val = va + r.addend;
+    if (r.pcrel)
+      val -= getVA() + r.offset;
+    target->relocateOne(buf + r.offset, r, val);
+  }
+}