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[Object, MachO] Introduce MachOObjectFile::load_commands() range iterator.

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Summary:
Now users don't have to manually deal with getFirstLoadCommandInfo() /
getNextLoadCommandInfo(), calculate the number of load segments, etc.

No functionality change.

Test Plan: regression test suite

Reviewers: rafael, lhames, loladiro

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10144

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238983 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Samsonov
2015-06-03 22:19:36 +00:00
parent 5eb7481d03
commit 40ec40a179
5 changed files with 59 additions and 103 deletions
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19
include/llvm/Object/MachO.h
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@@ -190,6 +190,8 @@ public:
const char *Ptr; // Where in memory the load command is.
MachO::load_command C; // The command itself.
};
typedef SmallVector<LoadCommandInfo, 4> LoadCommandList;
typedef LoadCommandList::const_iterator load_command_iterator;
MachOObjectFile(MemoryBufferRef Object, bool IsLittleEndian, bool Is64Bits,
std::error_code &EC);
@@ -270,10 +272,14 @@ public:
dice_iterator begin_dices() const;
dice_iterator end_dices() const;
load_command_iterator begin_load_commands() const;
load_command_iterator end_load_commands() const;
iterator_range<load_command_iterator> load_commands() const;
/// For use iterating over all exported symbols.
iterator_range<export_iterator> exports() const;
/// For use examining a trie not in a MachOObjectFile.
static iterator_range<export_iterator> exports(ArrayRef<uint8_t> Trie);
@@ -326,10 +332,6 @@ public:
unsigned getAnyRelocationType(const MachO::any_relocation_info &RE) const;
SectionRef getAnyRelocationSection(const MachO::any_relocation_info &RE) const;
// Walk load commands.
LoadCommandInfo getFirstLoadCommandInfo() const;
LoadCommandInfo getNextLoadCommandInfo(const LoadCommandInfo &L) const;
// MachO specific structures.
MachO::section getSection(DataRefImpl DRI) const;
MachO::section_64 getSection64(DataRefImpl DRI) const;
@@ -427,10 +429,15 @@ public:
}
private:
// Walk load commands.
LoadCommandInfo getFirstLoadCommandInfo() const;
LoadCommandInfo getNextLoadCommandInfo(const LoadCommandInfo &L) const;
typedef SmallVector<const char*, 1> SectionList;
SectionList Sections;
typedef SmallVector<const char*, 1> LibraryList;
LibraryList Libraries;
LoadCommandList LoadCommands;
typedef SmallVector<StringRef, 1> LibraryShortName;
mutable LibraryShortName LibrariesShortNames;
const char *SymtabLoadCmd;