[llvm] ec43c12 - [NFC][XCOFF] Replace structs FileHeader32/SectionHeader32 with constants.
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Thu Jun 10 04:11:13 PDT 2021
Author: Esme-Yi
Date: 2021-06-10T11:10:45Z
New Revision: ec43c1213a16969aeec6ac7a5b894ec1389e4d71
URL: https://github.com/llvm/llvm-project/commit/ec43c1213a16969aeec6ac7a5b894ec1389e4d71
DIFF: https://github.com/llvm/llvm-project/commit/ec43c1213a16969aeec6ac7a5b894ec1389e4d71.diff
LOG: [NFC][XCOFF] Replace structs FileHeader32/SectionHeader32 with constants.
Summary: Some structs like FileHeader32/SectionHeader32
defined in llvm/include/llvm/BinaryFormat/XCOFF.h seem
unnecessary, because we only need their size. So this
patch removes them and defines size constants directly.
Reviewed By: jhenderson
Differential Revision: https://reviews.llvm.org/D103901
Added:
Modified:
llvm/include/llvm/BinaryFormat/XCOFF.h
llvm/lib/MC/XCOFFObjectWriter.cpp
llvm/lib/ObjectYAML/XCOFFEmitter.cpp
Removed:
################################################################################
diff --git a/llvm/include/llvm/BinaryFormat/XCOFF.h b/llvm/include/llvm/BinaryFormat/XCOFF.h
index bfd0baf7cf4fa..bd2f0ee11d4e3 100644
--- a/llvm/include/llvm/BinaryFormat/XCOFF.h
+++ b/llvm/include/llvm/BinaryFormat/XCOFF.h
@@ -26,6 +26,8 @@ namespace XCOFF {
constexpr size_t FileNamePadSize = 6;
constexpr size_t NameSize = 8;
+constexpr size_t FileHeaderSize32 = 20;
+constexpr size_t SectionHeaderSize32 = 40;
constexpr size_t SymbolTableEntrySize = 18;
constexpr size_t RelocationSerializationSize32 = 10;
constexpr uint16_t RelocOverflow = 65535;
@@ -255,29 +257,6 @@ enum RelocationType : uint8_t {
///< large code model TOC-relative relocation.
};
-struct FileHeader32 {
- uint16_t Magic;
- uint16_t NumberOfSections;
- int32_t TimeStamp;
- uint32_t SymbolTableFileOffset;
- int32_t NumberOfSymbolTableEntries;
- uint16_t AuxiliaryHeaderSize;
- uint16_t Flags;
-};
-
-struct SectionHeader32 {
- char Name[XCOFF::NameSize];
- uint32_t PhysicalAddress;
- uint32_t VirtualAddress;
- uint32_t Size;
- uint32_t FileOffsetToData;
- uint32_t FileOffsetToRelocations;
- uint32_t FileOffsetToLineNumbers;
- uint16_t NumberOfRelocations;
- uint16_t NumberOfLineNumbers;
- int32_t Flags;
-};
-
enum CFileStringType : uint8_t {
XFT_FN = 0, ///< Specifies the source-file name.
XFT_CT = 1, ///< Specifies the compiler time stamp.
diff --git a/llvm/lib/MC/XCOFFObjectWriter.cpp b/llvm/lib/MC/XCOFFObjectWriter.cpp
index 182108688383a..defb066ee4d51 100644
--- a/llvm/lib/MC/XCOFFObjectWriter.cpp
+++ b/llvm/lib/MC/XCOFFObjectWriter.cpp
@@ -922,8 +922,8 @@ void XCOFFObjectWriter::assignAddressesAndIndices(const MCAsmLayout &Layout) {
SymbolTableEntryCount = SymbolTableIndex;
// Calculate the RawPointer value for each section.
- uint64_t RawPointer = sizeof(XCOFF::FileHeader32) + auxiliaryHeaderSize() +
- SectionCount * sizeof(XCOFF::SectionHeader32);
+ uint64_t RawPointer = XCOFF::FileHeaderSize32 + auxiliaryHeaderSize() +
+ SectionCount * XCOFF::SectionHeaderSize32;
for (auto *Sec : Sections) {
if (Sec->Index == Section::UninitializedIndex || Sec->IsVirtual)
continue;
diff --git a/llvm/lib/ObjectYAML/XCOFFEmitter.cpp b/llvm/lib/ObjectYAML/XCOFFEmitter.cpp
index c4a4e1ffea120..c113fae20f1f4 100644
--- a/llvm/lib/ObjectYAML/XCOFFEmitter.cpp
+++ b/llvm/lib/ObjectYAML/XCOFFEmitter.cpp
@@ -158,8 +158,8 @@ bool XCOFFWriter::initFileHeader(uint64_t CurrentOffset) {
bool XCOFFWriter::assignAddressesAndIndices() {
uint64_t CurrentOffset =
- sizeof(XCOFF::FileHeader32) /* TODO: + auxiliaryHeaderSize() */ +
- InitSections.size() * sizeof(XCOFF::SectionHeader32);
+ XCOFF::FileHeaderSize32 /* TODO: + auxiliaryHeaderSize() */ +
+ InitSections.size() * XCOFF::SectionHeaderSize32;
// Calculate section header info.
if (!initSectionHeader(CurrentOffset))
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