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[Object] Add symbol attribute flags: ST_ThreadLocal, ST_Common, and ST_Undefined. Implement these completely for ELF.

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Rename ST_External to ST_Unknown, and slightly change its semantics. It now only indicates that the symbol's type
is unknown, not that the symbol is undefined. (For that, use ST_Undefined).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151696 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Meyer
2012-02-29 02:11:55 +00:00
parent 37c02bce27
commit 2c67727046
5 changed files with 38 additions and 16 deletions
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15
include/llvm/Object/ObjectFile.h
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@ -180,9 +180,9 @@ public:
}
enum Type {
ST_Unknown, // Type not specified
ST_Data,
ST_Debug,
ST_External, // Defined in another object file
ST_File,
ST_Function,
ST_Other
@ -190,11 +190,14 @@ public:
enum Flags {
SF_None = 0,
SF_Global = 1 << 0, // Global symbol
SF_Weak = 1 << 1, // Weak symbol
SF_Absolute = 1 << 2, // Absolute symbol
SF_FormatSpecific = 1 << 3 // Specific to the object file format
// (e.g. section symbols)
SF_Undefined = 1U << 0, // Symbol is defined in another object file
SF_Global = 1U << 1, // Global symbol
SF_Weak = 1U << 2, // Weak symbol
SF_Absolute = 1U << 3, // Absolute symbol
SF_ThreadLocal = 1U << 4, // Thread local symbol
SF_Common = 1U << 5, // Symbol has common linkage
SF_FormatSpecific = 1U << 31 // Specific to the object file format
// (e.g. section symbols)
};
SymbolRef(DataRefImpl SymbolP, const ObjectFile *Owner);