mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-12-13 22:58:50 +00:00
e025323d29
This patch adds support for the MachO .alt_entry assembly directive, and uses it for global aliases with non-zero GEP offsets. The alt_entry flag indicates that a symbol should be layed out immediately after the preceding symbol. Conceptually it introduces an alternate entry point for a function or data structure. E.g.: safe_foo: // check preconditions for foo .alt_entry fast_foo fast_foo: // body of foo, can assume preconditions. The .alt_entry flag is also implicitly set on assembly aliases of the form: a = b + C where C is a non-zero constant, since these have the same effect as an alt_entry symbol: they introduce a label that cannot be moved relative to the preceding one. Setting the alt_entry flag on aliases of this form fixes http://llvm.org/PR25381. llvm-svn: 263521
74 lines
2.9 KiB
C++
74 lines
2.9 KiB
C++
//===- MCDirectives.h - Enums for directives on various targets -*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines various enums that represent target-specific directives.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MC_MCDIRECTIVES_H
|
|
#define LLVM_MC_MCDIRECTIVES_H
|
|
|
|
namespace llvm {
|
|
|
|
enum MCSymbolAttr {
|
|
MCSA_Invalid = 0, ///< Not a valid directive.
|
|
|
|
// Various directives in alphabetical order.
|
|
MCSA_ELF_TypeFunction, ///< .type _foo, STT_FUNC # aka @function
|
|
MCSA_ELF_TypeIndFunction, ///< .type _foo, STT_GNU_IFUNC
|
|
MCSA_ELF_TypeObject, ///< .type _foo, STT_OBJECT # aka @object
|
|
MCSA_ELF_TypeTLS, ///< .type _foo, STT_TLS # aka @tls_object
|
|
MCSA_ELF_TypeCommon, ///< .type _foo, STT_COMMON # aka @common
|
|
MCSA_ELF_TypeNoType, ///< .type _foo, STT_NOTYPE # aka @notype
|
|
MCSA_ELF_TypeGnuUniqueObject, /// .type _foo, @gnu_unique_object
|
|
MCSA_Global, ///< .globl
|
|
MCSA_Hidden, ///< .hidden (ELF)
|
|
MCSA_IndirectSymbol, ///< .indirect_symbol (MachO)
|
|
MCSA_Internal, ///< .internal (ELF)
|
|
MCSA_LazyReference, ///< .lazy_reference (MachO)
|
|
MCSA_Local, ///< .local (ELF)
|
|
MCSA_NoDeadStrip, ///< .no_dead_strip (MachO)
|
|
MCSA_SymbolResolver, ///< .symbol_resolver (MachO)
|
|
MCSA_AltEntry, ///< .alt_entry (MachO)
|
|
MCSA_PrivateExtern, ///< .private_extern (MachO)
|
|
MCSA_Protected, ///< .protected (ELF)
|
|
MCSA_Reference, ///< .reference (MachO)
|
|
MCSA_Weak, ///< .weak
|
|
MCSA_WeakDefinition, ///< .weak_definition (MachO)
|
|
MCSA_WeakReference, ///< .weak_reference (MachO)
|
|
MCSA_WeakDefAutoPrivate ///< .weak_def_can_be_hidden (MachO)
|
|
};
|
|
|
|
enum MCAssemblerFlag {
|
|
MCAF_SyntaxUnified, ///< .syntax (ARM/ELF)
|
|
MCAF_SubsectionsViaSymbols, ///< .subsections_via_symbols (MachO)
|
|
MCAF_Code16, ///< .code16 (X86) / .code 16 (ARM)
|
|
MCAF_Code32, ///< .code32 (X86) / .code 32 (ARM)
|
|
MCAF_Code64 ///< .code64 (X86)
|
|
};
|
|
|
|
enum MCDataRegionType {
|
|
MCDR_DataRegion, ///< .data_region
|
|
MCDR_DataRegionJT8, ///< .data_region jt8
|
|
MCDR_DataRegionJT16, ///< .data_region jt16
|
|
MCDR_DataRegionJT32, ///< .data_region jt32
|
|
MCDR_DataRegionEnd ///< .end_data_region
|
|
};
|
|
|
|
enum MCVersionMinType {
|
|
MCVM_IOSVersionMin, ///< .ios_version_min
|
|
MCVM_OSXVersionMin, ///< .macosx_version_min
|
|
MCVM_TvOSVersionMin, ///< .tvos_version_min
|
|
MCVM_WatchOSVersionMin, ///< .watchos_version_min
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|