#include <cassert>
namespace llvm {
+ class MCExpr;
class MCSection;
+ class MCStreamer;
+ class MCSymbol;
class MCContext;
-
+
/// MCAsmInfo - This class is intended to be used as a base class for asm
/// properties and features specific to the target.
- namespace ExceptionHandling { enum ExceptionsType { None, Dwarf, SjLj }; }
+ namespace ExceptionHandling {
+ enum ExceptionsType { None, DwarfTable, DwarfCFI, SjLj, ARM };
+ }
class MCAsmInfo {
protected:
/// HasSubsectionsViaSymbols - True if this target has the MachO
/// .subsections_via_symbols directive.
bool HasSubsectionsViaSymbols; // Default is false.
-
+
/// HasMachoZeroFillDirective - True if this is a MachO target that supports
/// the macho-specific .zerofill directive for emitting BSS Symbols.
bool HasMachoZeroFillDirective; // Default is false.
-
+
+ /// HasMachoTBSSDirective - True if this is a MachO target that supports
+ /// the macho-specific .tbss directive for emitting thread local BSS Symbols
+ bool HasMachoTBSSDirective; // Default is false.
+
/// HasStaticCtorDtorReferenceInStaticMode - True if the compiler should
/// emit a ".reference .constructors_used" or ".reference .destructors_used"
/// directive after the a static ctor/dtor list. This directive is only
/// emitted in Static relocation model.
bool HasStaticCtorDtorReferenceInStaticMode; // Default is false.
-
- /// NeedsSet - True if target asm treats expressions in data directives
- /// as linktime-relocatable. For assembly-time computation, we need to
- /// use a .set. Thus:
- /// .set w, x-y
- /// .long w
- /// is computed at assembly time, while
- /// .long x-y
- /// is relocated if the relative locations of x and y change at linktime.
- /// We want both these things in different places.
- bool NeedsSet; // Defaults to false.
-
+
+ /// LinkerRequiresNonEmptyDwarfLines - True if the linker has a bug and
+ /// requires that the debug_line section be of a minimum size. In practice
+ /// such a linker requires a non empty line sequence if a file is present.
+ bool LinkerRequiresNonEmptyDwarfLines; // Default to false.
+
/// MaxInstLength - This is the maximum possible length of an instruction,
/// which is needed to compute the size of an inline asm.
unsigned MaxInstLength; // Defaults to 4.
-
+
/// PCSymbol - The symbol used to represent the current PC. Used in PC
/// relative expressions.
const char *PCSymbol; // Defaults to "$".
- /// SeparatorChar - This character, if specified, is used to separate
- /// instructions from each other when on the same line. This is used to
- /// measure inline asm instructions.
- char SeparatorChar; // Defaults to ';'
+ /// SeparatorString - This string, if specified, is used to separate
+ /// instructions from each other when on the same line.
+ const char *SeparatorString; // Defaults to ';'
/// CommentColumn - This indicates the comment num (zero-based) at
/// which asm comments should be printed.
- unsigned CommentColumn; // Defaults to 60
+ unsigned CommentColumn; // Defaults to 40
/// CommentString - This indicates the comment character used by the
/// assembler.
const char *CommentString; // Defaults to "#"
+ /// LabelSuffix - This is appended to emitted labels.
+ const char *LabelSuffix; // Defaults to ":"
+
/// GlobalPrefix - If this is set to a non-empty string, it is prepended
/// onto all global symbols. This is often used for "_" or ".".
const char *GlobalPrefix; // Defaults to ""
/// pool entries that are completely private to the .s file and should not
/// have names in the .o file. This is often "." or "L".
const char *PrivateGlobalPrefix; // Defaults to "."
-
+
/// LinkerPrivateGlobalPrefix - This prefix is used for symbols that should
/// be passed through the assembler but be removed by the linker. This
/// is "l" on Darwin, currently used for some ObjC metadata.
const char *LinkerPrivateGlobalPrefix; // Defaults to ""
-
+
/// InlineAsmStart/End - If these are nonempty, they contain a directive to
/// emit before and after an inline assembly statement.
const char *InlineAsmStart; // Defaults to "#APP\n"
/// AllowNameToStartWithDigit - This is true if the assembler allows symbol
/// names to start with a digit (e.g., "0x0021"). This defaults to false.
bool AllowNameToStartWithDigit;
-
+
+ /// AllowPeriodsInName - This is true if the assembler allows periods in
+ /// symbol names. This defaults to true.
+ bool AllowPeriodsInName;
+
//===--- Data Emission Directives -------------------------------------===//
/// ZeroDirective - this should be set to the directive used to get some
/// AsciiDirective - This directive allows emission of an ascii string with
/// the standard C escape characters embedded into it.
const char *AsciiDirective; // Defaults to "\t.ascii\t"
-
+
/// AscizDirective - If not null, this allows for special handling of
/// zero terminated strings on this target. This is commonly supported as
/// ".asciz". If a target doesn't support this, it can be set to null.
const char *Data32bitsDirective; // Defaults to "\t.long\t"
const char *Data64bitsDirective; // Defaults to "\t.quad\t"
+ /// GPRel32Directive - if non-null, a directive that is used to emit a word
+ /// which should be relocated as a 32-bit GP-relative offset, e.g. .gpword
+ /// on Mips or .gprel32 on Alpha.
+ const char *GPRel32Directive; // Defaults to NULL.
+
/// getDataASDirective - Return the directive that should be used to emit
/// data of the specified size to the specified numeric address space.
virtual const char *getDataASDirective(unsigned Size, unsigned AS) const {
bool SunStyleELFSectionSwitchSyntax; // Defaults to false.
/// UsesELFSectionDirectiveForBSS - This is true if this target uses ELF
- /// '.section' directive before the '.bss' one. It's used for PPC/Linux
+ /// '.section' directive before the '.bss' one. It's used for PPC/Linux
/// which doesn't support the '.bss' directive only.
bool UsesELFSectionDirectiveForBSS; // Defaults to false.
-
+
+ /// HasMicrosoftFastStdCallMangling - True if this target uses microsoft
+ /// style mangling for functions with X86_StdCall/X86_FastCall calling
+ /// convention.
+ bool HasMicrosoftFastStdCallMangling; // Defaults to false.
+
//===--- Alignment Information ----------------------------------------===//
/// AlignDirective - The directive used to emit round up to an alignment
/// space created as the result of a alignment directive.
unsigned TextAlignFillValue; // Defaults to 0
- //===--- Section Switching Directives ---------------------------------===//
-
- /// PICJumpTableDirective - if non-null, the directive to emit before jump
- /// table entries. FIXME: REMOVE THIS.
- const char *PICJumpTableDirective; // Defaults to NULL.
-
-
//===--- Global Variable Emission Directives --------------------------===//
-
+
/// GlobalDirective - This is the directive used to declare a global entity.
///
const char *GlobalDirective; // Defaults to NULL.
- /// ExternDirective - This is the directive used to declare external
+ /// ExternDirective - This is the directive used to declare external
/// globals.
///
const char *ExternDirective; // Defaults to NULL.
-
- /// SetDirective - This is the name of a directive that can be used to tell
- /// the assembler to set the value of a variable to some expression.
- const char *SetDirective; // Defaults to null.
-
+
+ /// HasSetDirective - True if the assembler supports the .set directive.
+ bool HasSetDirective; // Defaults to true.
+
+ /// HasAggressiveSymbolFolding - False if the assembler requires that we use
+ /// Lc = a - b
+ /// .long Lc
+ /// instead of
+ /// .long a - b
+ bool HasAggressiveSymbolFolding; // Defaults to true.
+
/// HasLCOMMDirective - This is true if the target supports the .lcomm
/// directive.
- bool HasLCOMMDirective; // Defaults to false.
-
+ bool HasLCOMMDirective; // Defaults to false.
+
+ /// COMMDirectiveAlignmentIsInBytes - True is COMMDirective's optional
+ /// alignment is to be specified in bytes instead of log2(n).
+ bool COMMDirectiveAlignmentIsInBytes; // Defaults to true;
+
/// HasDotTypeDotSizeDirective - True if the target has .type and .size
/// directives, this is true for most ELF targets.
bool HasDotTypeDotSizeDirective; // Defaults to true.
/// directive.
bool HasNoDeadStrip; // Defaults to false.
+ /// HasSymbolResolver - True if this target supports the MachO
+ /// .symbol_resolver directive.
+ bool HasSymbolResolver; // Defaults to false.
+
/// WeakRefDirective - This directive, if non-null, is used to declare a
/// global as being a weak undefined symbol.
const char *WeakRefDirective; // Defaults to NULL.
-
+
/// WeakDefDirective - This directive, if non-null, is used to declare a
/// global as being a weak defined symbol.
const char *WeakDefDirective; // Defaults to NULL.
/// LinkOnceDirective - This directive, if non-null is used to declare a
/// global as being a weak defined symbol. This is used on cygwin/mingw.
const char *LinkOnceDirective; // Defaults to NULL.
-
+
/// HiddenVisibilityAttr - This attribute, if not MCSA_Invalid, is used to
/// declare a symbol as having hidden visibility.
MCSymbolAttr HiddenVisibilityAttr; // Defaults to MCSA_Hidden.
+ /// HiddenDeclarationVisibilityAttr - This attribute, if not MCSA_Invalid,
+ /// is used to declare an undefined symbol as having hidden visibility.
+ MCSymbolAttr HiddenDeclarationVisibilityAttr; // Defaults to MCSA_Hidden.
+
+
/// ProtectedVisibilityAttr - This attribute, if not MCSA_Invalid, is used
/// to declare a symbol as having protected visibility.
MCSymbolAttr ProtectedVisibilityAttr; // Defaults to MCSA_Protected
//===--- Dwarf Emission Directives -----------------------------------===//
- /// AbsoluteDebugSectionOffsets - True if we should emit abolute section
- /// offsets for debug information.
- bool AbsoluteDebugSectionOffsets; // Defaults to false.
-
- /// AbsoluteEHSectionOffsets - True if we should emit abolute section
- /// offsets for EH information. Defaults to false.
- bool AbsoluteEHSectionOffsets;
-
/// HasLEB128 - True if target asm supports leb128 directives.
bool HasLEB128; // Defaults to false.
- /// hasDotLocAndDotFile - True if target asm supports .loc and .file
- /// directives for emitting debugging information.
- bool HasDotLocAndDotFile; // Defaults to false.
-
/// SupportsDebugInformation - True if target supports emission of debugging
/// information.
bool SupportsDebugInformation; // Defaults to false.
/// encode inline subroutine information.
bool DwarfUsesInlineInfoSection; // Defaults to false.
- /// Is_EHSymbolPrivate - If set, the "_foo.eh" is made private so that it
- /// doesn't show up in the symbol table of the object file.
- bool Is_EHSymbolPrivate; // Defaults to true.
+ /// DwarfSectionOffsetDirective - Special section offset directive.
+ const char* DwarfSectionOffsetDirective; // Defaults to NULL
- /// GlobalEHDirective - This is the directive used to make exception frame
- /// tables globally visible.
- const char *GlobalEHDirective; // Defaults to NULL.
+ /// DwarfUsesAbsoluteLabelForStmtList - True if DW_AT_stmt_list needs
+ /// absolute label instead of offset.
+ bool DwarfUsesAbsoluteLabelForStmtList; // Defaults to true;
- /// SupportsWeakEmptyEHFrame - True if target assembler and linker will
- /// handle a weak_definition of constant 0 for an omitted EH frame.
- bool SupportsWeakOmittedEHFrame; // Defaults to true.
+ // DwarfUsesLabelOffsetDifference - True if Dwarf2 output can
+ // use EmitLabelOffsetDifference.
+ bool DwarfUsesLabelOffsetForRanges;
- /// DwarfSectionOffsetDirective - Special section offset directive.
- const char* DwarfSectionOffsetDirective; // Defaults to NULL
-
//===--- CBE Asm Translation Table -----------------------------------===//
const char *const *AsmTransCBE; // Defaults to empty
static unsigned getULEB128Size(unsigned Value);
bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; }
-
+
// Data directive accessors.
//
const char *getData8bitsDirective(unsigned AS = 0) const {
const char *getData64bitsDirective(unsigned AS = 0) const {
return AS == 0 ? Data64bitsDirective : getDataASDirective(64, AS);
}
+ const char *getGPRel32Directive() const { return GPRel32Directive; }
/// getNonexecutableStackSection - Targets can implement this method to
/// specify a section to switch to if the translation unit doesn't have any
/// trampolines that require an executable stack.
- virtual MCSection *getNonexecutableStackSection(MCContext &Ctx) const {
+ virtual const MCSection *getNonexecutableStackSection(MCContext &Ctx) const{
return 0;
}
-
+
+ virtual const MCExpr *
+ getExprForPersonalitySymbol(const MCSymbol *Sym,
+ unsigned Encoding,
+ MCStreamer &Streamer) const;
+
+ const MCExpr *
+ getExprForFDESymbol(const MCSymbol *Sym,
+ unsigned Encoding,
+ MCStreamer &Streamer) const;
+
bool usesSunStyleELFSectionSwitchSyntax() const {
return SunStyleELFSectionSwitchSyntax;
}
-
+
bool usesELFSectionDirectiveForBSS() const {
return UsesELFSectionDirectiveForBSS;
}
+ bool hasMicrosoftFastStdCallMangling() const {
+ return HasMicrosoftFastStdCallMangling;
+ }
+
// Accessors.
//
bool hasMachoZeroFillDirective() const { return HasMachoZeroFillDirective; }
+ bool hasMachoTBSSDirective() const { return HasMachoTBSSDirective; }
bool hasStaticCtorDtorReferenceInStaticMode() const {
return HasStaticCtorDtorReferenceInStaticMode;
}
- bool needsSet() const {
- return NeedsSet;
+ bool getLinkerRequiresNonEmptyDwarfLines() const {
+ return LinkerRequiresNonEmptyDwarfLines;
}
unsigned getMaxInstLength() const {
return MaxInstLength;
const char *getPCSymbol() const {
return PCSymbol;
}
- char getSeparatorChar() const {
- return SeparatorChar;
+ const char *getSeparatorString() const {
+ return SeparatorString;
}
unsigned getCommentColumn() const {
return CommentColumn;
const char *getCommentString() const {
return CommentString;
}
+ const char *getLabelSuffix() const {
+ return LabelSuffix;
+ }
const char *getGlobalPrefix() const {
return GlobalPrefix;
}
bool doesAllowNameToStartWithDigit() const {
return AllowNameToStartWithDigit;
}
+ bool doesAllowPeriodsInName() const {
+ return AllowPeriodsInName;
+ }
const char *getZeroDirective() const {
return ZeroDirective;
}
const char *getAscizDirective() const {
return AscizDirective;
}
- const char *getPICJumpTableDirective() const {
- return PICJumpTableDirective;
- }
const char *getAlignDirective() const {
return AlignDirective;
}
const char *getExternDirective() const {
return ExternDirective;
}
- const char *getSetDirective() const {
- return SetDirective;
+ bool hasSetDirective() const { return HasSetDirective; }
+ bool hasAggressiveSymbolFolding() const {
+ return HasAggressiveSymbolFolding;
}
bool hasLCOMMDirective() const { return HasLCOMMDirective; }
bool hasDotTypeDotSizeDirective() const {return HasDotTypeDotSizeDirective;}
+ bool getCOMMDirectiveAlignmentIsInBytes() const {
+ return COMMDirectiveAlignmentIsInBytes;
+ }
bool hasSingleParameterDotFile() const { return HasSingleParameterDotFile; }
bool hasNoDeadStrip() const { return HasNoDeadStrip; }
+ bool hasSymbolResolver() const { return HasSymbolResolver; }
const char *getWeakRefDirective() const { return WeakRefDirective; }
const char *getWeakDefDirective() const { return WeakDefDirective; }
const char *getLinkOnceDirective() const { return LinkOnceDirective; }
-
+
MCSymbolAttr getHiddenVisibilityAttr() const { return HiddenVisibilityAttr;}
+ MCSymbolAttr getHiddenDeclarationVisibilityAttr() const {
+ return HiddenDeclarationVisibilityAttr;
+ }
MCSymbolAttr getProtectedVisibilityAttr() const {
return ProtectedVisibilityAttr;
}
- bool isAbsoluteDebugSectionOffsets() const {
- return AbsoluteDebugSectionOffsets;
- }
- bool isAbsoluteEHSectionOffsets() const {
- return AbsoluteEHSectionOffsets;
- }
bool hasLEB128() const {
return HasLEB128;
}
- bool hasDotLocAndDotFile() const {
- return HasDotLocAndDotFile;
- }
bool doesSupportDebugInformation() const {
return SupportsDebugInformation;
}
ExceptionHandling::ExceptionsType getExceptionHandlingType() const {
return ExceptionsType;
}
+ bool isExceptionHandlingDwarf() const {
+ return
+ (ExceptionsType == ExceptionHandling::DwarfTable ||
+ ExceptionsType == ExceptionHandling::DwarfCFI ||
+ ExceptionsType == ExceptionHandling::ARM);
+ }
+
bool doesDwarfRequireFrameSection() const {
return DwarfRequiresFrameSection;
}
bool doesDwarfUsesInlineInfoSection() const {
return DwarfUsesInlineInfoSection;
}
- bool is_EHSymbolPrivate() const {
- return Is_EHSymbolPrivate;
- }
- const char *getGlobalEHDirective() const {
- return GlobalEHDirective;
- }
- bool getSupportsWeakOmittedEHFrame() const {
- return SupportsWeakOmittedEHFrame;
- }
const char *getDwarfSectionOffsetDirective() const {
return DwarfSectionOffsetDirective;
}
+ bool doesDwarfUsesAbsoluteLabelForStmtList() const {
+ return DwarfUsesAbsoluteLabelForStmtList;
+ }
+ bool doesDwarfUsesLabelOffsetForRanges() const {
+ return DwarfUsesLabelOffsetForRanges;
+ }
const char *const *getAsmCBE() const {
return AsmTransCBE;
}
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