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Use a std::vector to record the offsets of the sections. NFC.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235995 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2015-04-28 15:26:21 +00:00
parent 39dfabd785
commit a34b8b2e55
1 changed files with 8 additions and 10 deletions
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18
lib/MC/ELFObjectWriter.cpp
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@ -221,9 +221,8 @@ class ELFObjectWriter : public MCObjectWriter {
typedef DenseMap<const MCSectionELF*, const MCSymbol*> GroupMapTy;
// Map from a signature symbol to the group section
typedef DenseMap<const MCSymbol*, const MCSectionELF*> RevGroupMapTy;
// Map from a section to its start and end offset
typedef DenseMap<const MCSectionELF *, std::pair<uint64_t, uint64_t>>
SectionOffsetMapTy;
// Start and end offset of each section
typedef std::vector<std::pair<uint64_t, uint64_t>> SectionOffsetsTy;
/// Compute the symbol table data
///
@ -259,7 +258,7 @@ class ELFObjectWriter : public MCObjectWriter {
MCAssembler &Asm, const GroupMapTy &GroupMap,
const MCAsmLayout &Layout,
const SectionIndexMapTy &SectionIndexMap,
const SectionOffsetMapTy &SectionOffsetMap);
const SectionOffsetsTy &SectionOffsets);
void WriteSecHdrEntry(uint32_t Name, uint32_t Type, uint64_t Flags,
uint64_t Address, uint64_t Offset,
@ -1550,7 +1549,7 @@ void ELFObjectWriter::writeSectionHeader(
ArrayRef<const MCSectionELF *> Sections, MCAssembler &Asm,
const GroupMapTy &GroupMap, const MCAsmLayout &Layout,
const SectionIndexMapTy &SectionIndexMap,
const SectionOffsetMapTy &SectionOffsetMap) {
const SectionOffsetsTy &SectionOffsets) {
const unsigned NumSections = Asm.size();
// Null section first.
@ -1570,8 +1569,7 @@ void ELFObjectWriter::writeSectionHeader(
GroupSymbolIndex = getSymbolIndexInSymbolTable(Asm,
GroupMap.lookup(&Section));
const std::pair<uint64_t, uint64_t> &Offsets =
SectionOffsetMap.lookup(&Section);
const std::pair<uint64_t, uint64_t> &Offsets = SectionOffsets[i];
uint64_t Size = Section.getType() == ELF::SHT_NOBITS
? Layout.getSectionAddressSize(&SD)
: Offsets.second - Offsets.first;
@ -1607,7 +1605,7 @@ void ELFObjectWriter::WriteObject(MCAssembler &Asm,
for (auto &Pair : SectionIndexMap)
Sections[Pair.second - 1] = Pair.first;
SectionOffsetMapTy SectionOffsetMap;
SectionOffsetsTy SectionOffsets;
// Write out the ELF header ...
WriteHeader(Asm, NumSections + 1);
@ -1623,7 +1621,7 @@ void ELFObjectWriter::WriteObject(MCAssembler &Asm,
uint64_t SecStart = OS.tell();
writeDataSectionData(Asm, Layout, SD);
uint64_t SecEnd = OS.tell();
SectionOffsetMap[&Section] = std::make_pair(SecStart, SecEnd);
SectionOffsets.push_back(std::make_pair(SecStart, SecEnd));
}
uint64_t NaturalAlignment = is64Bit() ? 8 : 4;
@ -1634,7 +1632,7 @@ void ELFObjectWriter::WriteObject(MCAssembler &Asm,
// ... then the section header table ...
writeSectionHeader(Sections, Asm, GroupMap, Layout, SectionIndexMap,
SectionOffsetMap);
SectionOffsets);
if (is64Bit()) {
uint64_t Val = SectionHeaderOffset;