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-rw-r--r--lld/MachO/MergedOutputSection.cpp74
1 files changed, 0 insertions, 74 deletions
diff --git a/lld/MachO/MergedOutputSection.cpp b/lld/MachO/MergedOutputSection.cpp
deleted file mode 100644
index 2d0be2538347..000000000000
--- a/lld/MachO/MergedOutputSection.cpp
+++ /dev/null
@@ -1,74 +0,0 @@
-//===- OutputSection.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 "MergedOutputSection.h"
-#include "lld/Common/ErrorHandler.h"
-#include "lld/Common/Memory.h"
-#include "llvm/BinaryFormat/MachO.h"
-
-using namespace llvm;
-using namespace llvm::MachO;
-using namespace lld;
-using namespace lld::macho;
-
-void MergedOutputSection::mergeInput(InputSection *input) {
- if (inputs.empty()) {
- align = input->align;
- flags = input->flags;
- } else {
- mergeFlags(input->flags);
- align = std::max(align, input->align);
- }
-
- inputs.push_back(input);
- input->parent = this;
-}
-
-void MergedOutputSection::finalize() {
- uint64_t isecAddr = addr;
- uint64_t isecFileOff = fileOff;
- for (InputSection *isec : inputs) {
- isecAddr = alignTo(isecAddr, isec->align);
- isecFileOff = alignTo(isecFileOff, isec->align);
- isec->outSecOff = isecAddr - addr;
- isec->outSecFileOff = isecFileOff - fileOff;
- isecAddr += isec->getSize();
- isecFileOff += isec->getFileSize();
- }
- size = isecAddr - addr;
- fileSize = isecFileOff - fileOff;
-}
-
-void MergedOutputSection::writeTo(uint8_t *buf) const {
- for (InputSection *isec : inputs) {
- isec->writeTo(buf + isec->outSecFileOff);
- }
-}
-
-// TODO: this is most likely wrong; reconsider how section flags
-// are actually merged. The logic presented here was written without
-// any form of informed research.
-void MergedOutputSection::mergeFlags(uint32_t inputFlags) {
- uint8_t sectionFlag = MachO::SECTION_TYPE & inputFlags;
- if (sectionFlag != (MachO::SECTION_TYPE & flags))
- error("Cannot add merge section; inconsistent type flags " +
- Twine(sectionFlag));
-
- uint32_t inconsistentFlags =
- MachO::S_ATTR_DEBUG | MachO::S_ATTR_STRIP_STATIC_SYMS |
- MachO::S_ATTR_NO_DEAD_STRIP | MachO::S_ATTR_LIVE_SUPPORT;
- if ((inputFlags ^ flags) & inconsistentFlags)
- error("Cannot add merge section; cannot merge inconsistent flags");
-
- // Negate pure instruction presence if any section isn't pure.
- uint32_t pureMask = ~MachO::S_ATTR_PURE_INSTRUCTIONS | (inputFlags & flags);
-
- // Merge the rest
- flags |= inputFlags;
- flags &= pureMask;
-}