LLVM: lib/ObjCopy/wasm/WasmWriter.cpp Source File (original) (raw)

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15namespace llvm {

16namespace objcopy {

17namespace wasm {

18

19using namespace object;

21

22Writer::SectionHeader Writer::createSectionHeader(const Section &S,

23 size_t &SectionSize) {

24 SectionHeader Header;

26 OS << S.SectionType;

29 if (HasName)

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34 unsigned HeaderSecSizeEncodingLen = S.HeaderSecSizeEncodingLen.value_or(5);

36 if (HasName) {

38 OS << S.Name;

39 }

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43 return Header;

44}

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46size_t Writer::finalize() {

48 SectionHeaders.reserve(Obj.Sections.size());

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50 for (const Section &S : Obj.Sections) {

52 SectionHeaders.push_back(createSectionHeader(S, SectionSize));

54 }

55 return ObjectSize;

56}

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59 size_t TotalSize = finalize();

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69 for (size_t I = 0, S = SectionHeaders.size(); I < S; ++I) {

70 Out.write(SectionHeaders[I].data(), SectionHeaders[I].size());

71 Out.write(reinterpret_cast<const char *>(Obj.Sections[I].Contents.data()),

73 }

74

76}

77

78}

79}

80}

Lightweight error class with error context and mandatory checking.

static ErrorSuccess success()

Create a success value.

constexpr size_t size() const

size - Get the string size.

constexpr const char * data() const

data - Get a pointer to the start of the string (which may not be null terminated).

raw_ostream & write(unsigned char C)

virtual void reserveExtraSpace(uint64_t ExtraSize)

If possible, pre-allocate ExtraSize bytes for stream data.

A raw_ostream that writes to an SmallVector or SmallString.

void write32le(void *P, uint32_t V)

const uint32_t WasmVersion

This is an optimization pass for GlobalISel generic memory operations.

auto size(R &&Range, std::enable_if_t< std::is_base_of< std::random_access_iterator_tag, typename std::iterator_traits< decltype(Range.begin())>::iterator_category >::value, void > *=nullptr)

Get the size of a range.

unsigned getULEB128Size(uint64_t Value)

Utility function to get the size of the ULEB128-encoded value.

unsigned encodeULEB128(uint64_t Value, raw_ostream &OS, unsigned PadTo=0)

Utility function to encode a ULEB128 value to an output stream.

std::vector< Section > Sections

llvm::wasm::WasmObjectHeader Header