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343a996ca5
Use a dedicated MachO load command to annotate data-in-code regions.
This is the same format the linker produces for final executable images,
allowing consistency of representation and use of introspection tools
for both object and executable files.
Data-in-code regions are annotated via ".data_region"/".end_data_region"
directive pairs, with an optional region type.
data_region_directive := ".data_region" { region_type }
region_type := "jt8" | "jt16" | "jt32" | "jta32"
end_data_region_directive := ".end_data_region"
The previous handling of ARM-style "$d.*" labels was broken and has
been removed. Specifically, it didn't handle ARM vs. Thumb mode when
marking the end of the section.
rdar://11459456
llvm-svn: 157062
66 lines
2.6 KiB
C++
66 lines
2.6 KiB
C++
//===- MCDirectives.h - Enums for directives on various targets -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines various enums that represent target-specific directives.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCDIRECTIVES_H
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#define LLVM_MC_MCDIRECTIVES_H
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namespace llvm {
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enum MCSymbolAttr {
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MCSA_Invalid = 0, ///< Not a valid directive.
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// Various directives in alphabetical order.
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MCSA_ELF_TypeFunction, ///< .type _foo, STT_FUNC # aka @function
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MCSA_ELF_TypeIndFunction, ///< .type _foo, STT_GNU_IFUNC
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MCSA_ELF_TypeObject, ///< .type _foo, STT_OBJECT # aka @object
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MCSA_ELF_TypeTLS, ///< .type _foo, STT_TLS # aka @tls_object
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MCSA_ELF_TypeCommon, ///< .type _foo, STT_COMMON # aka @common
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MCSA_ELF_TypeNoType, ///< .type _foo, STT_NOTYPE # aka @notype
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MCSA_ELF_TypeGnuUniqueObject, /// .type _foo, @gnu_unique_object
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MCSA_Global, ///< .globl
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MCSA_Hidden, ///< .hidden (ELF)
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MCSA_IndirectSymbol, ///< .indirect_symbol (MachO)
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MCSA_Internal, ///< .internal (ELF)
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MCSA_LazyReference, ///< .lazy_reference (MachO)
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MCSA_Local, ///< .local (ELF)
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MCSA_NoDeadStrip, ///< .no_dead_strip (MachO)
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MCSA_SymbolResolver, ///< .symbol_resolver (MachO)
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MCSA_PrivateExtern, ///< .private_extern (MachO)
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MCSA_Protected, ///< .protected (ELF)
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MCSA_Reference, ///< .reference (MachO)
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MCSA_Weak, ///< .weak
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MCSA_WeakDefinition, ///< .weak_definition (MachO)
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MCSA_WeakReference, ///< .weak_reference (MachO)
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MCSA_WeakDefAutoPrivate ///< .weak_def_can_be_hidden (MachO)
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};
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enum MCAssemblerFlag {
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MCAF_SyntaxUnified, ///< .syntax (ARM/ELF)
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MCAF_SubsectionsViaSymbols, ///< .subsections_via_symbols (MachO)
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MCAF_Code16, ///< .code16 (X86) / .code 16 (ARM)
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MCAF_Code32, ///< .code32 (X86) / .code 32 (ARM)
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MCAF_Code64 ///< .code64 (X86)
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};
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enum MCDataRegionType {
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MCDR_DataRegion, ///< .data_region
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MCDR_DataRegionJT8, ///< .data_region jt8
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MCDR_DataRegionJT16, ///< .data_region jt16
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MCDR_DataRegionJT32, ///< .data_region jt32
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MCDR_DataRegionEnd ///< .end_data_region
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};
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} // end namespace llvm
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#endif
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