forked from OSchip/llvm-project
68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
//===- OutputSegment.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 "OutputSegment.h"
|
|
#include "InputSection.h"
|
|
#include "MergedOutputSection.h"
|
|
#include "SyntheticSections.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;
|
|
|
|
static uint32_t initProt(StringRef name) {
|
|
if (name == segment_names::text)
|
|
return VM_PROT_READ | VM_PROT_EXECUTE;
|
|
if (name == segment_names::pageZero)
|
|
return 0;
|
|
if (name == segment_names::linkEdit)
|
|
return VM_PROT_READ;
|
|
return VM_PROT_READ | VM_PROT_WRITE;
|
|
}
|
|
|
|
static uint32_t maxProt(StringRef name) {
|
|
if (name == segment_names::pageZero)
|
|
return 0;
|
|
return VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE;
|
|
}
|
|
|
|
size_t OutputSegment::numNonHiddenSections() const {
|
|
size_t count = 0;
|
|
for (const OutputSection *osec : sections) {
|
|
count += (!osec->isHidden() ? 1 : 0);
|
|
}
|
|
return count;
|
|
}
|
|
|
|
void OutputSegment::addOutputSection(OutputSection *osec) {
|
|
osec->parent = this;
|
|
sections.push_back(osec);
|
|
}
|
|
|
|
static llvm::DenseMap<StringRef, OutputSegment *> nameToOutputSegment;
|
|
std::vector<OutputSegment *> macho::outputSegments;
|
|
|
|
OutputSegment *macho::getOrCreateOutputSegment(StringRef name) {
|
|
OutputSegment *&segRef = nameToOutputSegment[name];
|
|
if (segRef != nullptr)
|
|
return segRef;
|
|
|
|
segRef = make<OutputSegment>();
|
|
segRef->name = name;
|
|
segRef->maxProt = maxProt(name);
|
|
segRef->initProt = initProt(name);
|
|
|
|
outputSegments.push_back(segRef);
|
|
return segRef;
|
|
}
|