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author | Daniel Dunbar <daniel@zuster.org> | 2010-05-17 21:54:26 +0000 |
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committer | Daniel Dunbar <daniel@zuster.org> | 2010-05-17 21:54:26 +0000 |
commit | 9a744e38607bc3046dffea56efec0b2dfc51d5e4 (patch) | |
tree | 4bf44a58963ea7ef65b4dea08df69fe73dff1ee1 /include | |
parent | db9014dd8b7b0b2581d10357b305f99f1b529316 (diff) | |
download | external_llvm-9a744e38607bc3046dffea56efec0b2dfc51d5e4.zip external_llvm-9a744e38607bc3046dffea56efec0b2dfc51d5e4.tar.gz external_llvm-9a744e38607bc3046dffea56efec0b2dfc51d5e4.tar.bz2 |
MC: Add dyn_cast support to MCSection.
- Of questionable utility, since in general anything which wants to do this should probably be within a target specific hook, which can rely on the sections being of the appropriate type. However, it can be useful for short term hacks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103980 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
-rw-r--r-- | include/llvm/MC/MCSection.h | 17 | ||||
-rw-r--r-- | include/llvm/MC/MCSectionCOFF.h | 9 | ||||
-rw-r--r-- | include/llvm/MC/MCSectionELF.h | 7 | ||||
-rw-r--r-- | include/llvm/MC/MCSectionMachO.h | 5 |
4 files changed, 34 insertions, 4 deletions
diff --git a/include/llvm/MC/MCSection.h b/include/llvm/MC/MCSection.h index 1e2ef1e..808767c 100644 --- a/include/llvm/MC/MCSection.h +++ b/include/llvm/MC/MCSection.h @@ -17,6 +17,7 @@ #include <string> #include "llvm/ADT/StringRef.h" #include "llvm/MC/SectionKind.h" +#include "llvm/Support/Casting.h" namespace llvm { class MCContext; @@ -27,15 +28,27 @@ namespace llvm { /// section in the current translation unit. The MCContext class uniques and /// creates these. class MCSection { + public: + enum SectionVariant { + SV_COFF = 0, + SV_ELF, + SV_MachO, + SV_PIC16 + }; + + private: MCSection(const MCSection&); // DO NOT IMPLEMENT void operator=(const MCSection&); // DO NOT IMPLEMENT protected: - MCSection(SectionKind K) : Kind(K) {} + MCSection(SectionVariant V, SectionKind K) : Variant(V), Kind(K) {} + SectionVariant Variant; SectionKind Kind; public: virtual ~MCSection(); SectionKind getKind() const { return Kind; } + + SectionVariant getVariant() const { return Variant; } virtual void PrintSwitchToSection(const MCAsmInfo &MAI, raw_ostream &OS) const = 0; @@ -47,6 +60,8 @@ namespace llvm { virtual bool isBaseAddressKnownZero() const { return false; } + + static bool classof(const MCSection *) { return true; } }; } // end namespace llvm diff --git a/include/llvm/MC/MCSectionCOFF.h b/include/llvm/MC/MCSectionCOFF.h index f91f0d5..938a388 100644 --- a/include/llvm/MC/MCSectionCOFF.h +++ b/include/llvm/MC/MCSectionCOFF.h @@ -35,8 +35,8 @@ namespace llvm { friend class MCContext; MCSectionCOFF(StringRef Section, unsigned Characteristics, int Selection, SectionKind K) - : MCSection(K), SectionName(Section), Characteristics(Characteristics), - Selection (Selection) { + : MCSection(SV_COFF, K), SectionName(Section), + Characteristics(Characteristics), Selection (Selection) { assert ((Characteristics & 0x00F00000) == 0 && "alignment must not be set upon section creation"); } @@ -103,6 +103,11 @@ namespace llvm { virtual void PrintSwitchToSection(const MCAsmInfo &MAI, raw_ostream &OS) const; + + static bool classof(const MCSection *S) { + return S->getVariant() == SV_COFF; + } + static bool classof(const MCSectionCOFF *) { return true; } }; } // end namespace llvm diff --git a/include/llvm/MC/MCSectionELF.h b/include/llvm/MC/MCSectionELF.h index 7054668..5fe8171 100644 --- a/include/llvm/MC/MCSectionELF.h +++ b/include/llvm/MC/MCSectionELF.h @@ -40,7 +40,7 @@ private: friend class MCContext; MCSectionELF(StringRef Section, unsigned type, unsigned flags, SectionKind K, bool isExplicit) - : MCSection(K), SectionName(Section), Type(type), Flags(flags), + : MCSection(SV_ELF, K), SectionName(Section), Type(type), Flags(flags), IsExplicit(isExplicit) {} ~MCSectionELF(); public: @@ -178,6 +178,11 @@ public: virtual bool isBaseAddressKnownZero() const { return (getFlags() & SHF_ALLOC) == 0; } + + static bool classof(const MCSection *S) { + return S->getVariant() == SV_ELF; + } + static bool classof(const MCSectionELF *) { return true; } }; } // end namespace llvm diff --git a/include/llvm/MC/MCSectionMachO.h b/include/llvm/MC/MCSectionMachO.h index 1474649..c149926 100644 --- a/include/llvm/MC/MCSectionMachO.h +++ b/include/llvm/MC/MCSectionMachO.h @@ -165,6 +165,11 @@ public: virtual void PrintSwitchToSection(const MCAsmInfo &MAI, raw_ostream &OS) const; + + static bool classof(const MCSection *S) { + return S->getVariant() == SV_MachO; + } + static bool classof(const MCSectionMachO *) { return true; } }; } // end namespace llvm |