//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_TARGET_ASM_INFO_H
-#define LLVM_TARGET_ASM_INFO_H
+#ifndef LLVM_MC_MCASMINFO_H
+#define LLVM_MC_MCASMINFO_H
#include "llvm/MC/MCDirectives.h"
+#include "llvm/MC/MCDwarf.h"
+#include "llvm/MC/MachineLocation.h"
#include <cassert>
+#include <vector>
namespace llvm {
+ class MCExpr;
class MCSection;
+ class MCStreamer;
+ class MCSymbol;
class MCContext;
+ namespace ExceptionHandling {
+ enum ExceptionsType { None, DwarfCFI, SjLj, ARM, Win64 };
+ }
+
+ namespace LCOMM {
+ enum LCOMMType { NoAlignment, ByteAlignment, Log2Alignment };
+ }
+
/// 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 }; }
-
class MCAsmInfo {
protected:
//===------------------------------------------------------------------===//
// Properties to be set by the target writer, used to configure asm printer.
//
+ /// PointerSize - Pointer size in bytes.
+ /// Default is 4.
+ unsigned PointerSize;
+
+ /// CalleeSaveStackSlotSize - Size of the stack slot reserved for
+ /// callee-saved registers, in bytes.
+ /// Default is same as pointer size.
+ unsigned CalleeSaveStackSlotSize;
+
+ /// IsLittleEndian - True if target is little endian.
+ /// Default is true.
+ bool IsLittleEndian;
+
+ /// StackGrowsUp - True if target stack grow up.
+ /// Default is false.
+ bool StackGrowsUp;
+
/// HasSubsectionsViaSymbols - True if this target has the MachO
/// .subsections_via_symbols directive.
bool HasSubsectionsViaSymbols; // Default is false.
/// emitted in Static relocation model.
bool HasStaticCtorDtorReferenceInStaticMode; // Default is 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.
/// relative expressions.
const char *PCSymbol; // Defaults to "$".
- /// SeparatorChar - This character, if specified, is used to separate
- /// instructions from each other when on the same line. This is used to
- /// measure inline asm instructions.
- char SeparatorChar; // Defaults to ';'
+ /// SeparatorString - This string, if specified, is used to separate
+ /// instructions from each other when on the same line.
+ const char *SeparatorString; // Defaults to ';'
/// CommentColumn - This indicates the comment num (zero-based) at
/// which asm comments should be printed.
/// LabelSuffix - This is appended to emitted labels.
const char *LabelSuffix; // Defaults to ":"
+ /// LabelSuffix - This is appended to emitted labels.
+ const char *DebugLabelSuffix; // Defaults to ":"
+
/// GlobalPrefix - If this is set to a non-empty string, it is prepended
/// onto all global symbols. This is often used for "_" or ".".
const char *GlobalPrefix; // Defaults to ""
const char *InlineAsmStart; // Defaults to "#APP\n"
const char *InlineAsmEnd; // Defaults to "#NO_APP\n"
+ /// Code16Directive, Code32Directive, Code64Directive - These are assembly
+ /// directives that tells the assembler to interpret the following
+ /// instructions differently.
+ const char *Code16Directive; // Defaults to ".code16"
+ const char *Code32Directive; // Defaults to ".code32"
+ const char *Code64Directive; // Defaults to ".code64"
+
/// AssemblerDialect - Which dialect of an assembler variant to use.
unsigned AssemblerDialect; // Defaults to 0
/// symbol names. This defaults to true.
bool AllowPeriodsInName;
+ /// AllowUTF8 - This is true if the assembler accepts UTF-8 input.
+ // FIXME: Make this a more general encoding setting?
+ bool AllowUTF8;
+
+ /// UseDataRegionDirectives - This is true if data region markers should
+ /// be printed as ".data_region/.end_data_region" directives. If false,
+ /// use "$d/$a" labels instead.
+ bool UseDataRegionDirectives;
+
//===--- Data Emission Directives -------------------------------------===//
/// ZeroDirective - this should be set to the directive used to get some
const char *Data32bitsDirective; // Defaults to "\t.long\t"
const char *Data64bitsDirective; // Defaults to "\t.quad\t"
+ /// GPRel64Directive - if non-null, a directive that is used to emit a word
+ /// which should be relocated as a 64-bit GP-relative offset, e.g. .gpdword
+ /// on Mips.
+ const char *GPRel64Directive; // Defaults to NULL.
+
/// 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.
/// convention.
bool HasMicrosoftFastStdCallMangling; // Defaults to false.
+ bool NeedsDwarfSectionOffsetDirective;
+
//===--- Alignment Information ----------------------------------------===//
/// AlignDirective - The directive used to emit round up to an alignment
/// HasSetDirective - True if the assembler supports the .set directive.
bool HasSetDirective; // Defaults to true.
- /// HasLCOMMDirective - This is true if the target supports the .lcomm
- /// directive.
- bool HasLCOMMDirective; // Defaults to false.
+ /// HasAggressiveSymbolFolding - False if the assembler requires that we use
+ /// Lc = a - b
+ /// .long Lc
+ /// instead of
+ /// .long a - b
+ bool HasAggressiveSymbolFolding; // Defaults to true.
- /// COMMDirectiveAlignmentIsInBytes - True is COMMDirective's optional
+ /// COMMDirectiveAlignmentIsInBytes - True is .comm's and .lcomms optional
/// alignment is to be specified in bytes instead of log2(n).
bool COMMDirectiveAlignmentIsInBytes; // Defaults to true;
+ /// LCOMMDirectiveAlignment - Describes if the .lcomm directive for the
+ /// target supports an alignment argument and how it is interpreted.
+ LCOMM::LCOMMType LCOMMDirectiveAlignmentType; // Defaults to NoAlignment.
+
/// 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.
/// 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
/// 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.
/// SupportsExceptionHandling - True if target supports exception handling.
ExceptionHandling::ExceptionsType ExceptionsType; // Defaults to None
- /// RequiresFrameSection - true if the Dwarf2 output needs a frame section
- bool DwarfRequiresFrameSection; // Defaults to true.
-
/// DwarfUsesInlineInfoSection - True if DwarfDebugInlineSection is used to
/// encode inline subroutine information.
bool DwarfUsesInlineInfoSection; // Defaults to false.
- /// DwarfSectionOffsetDirective - Special section offset directive.
- const char* DwarfSectionOffsetDirective; // Defaults to NULL
-
- /// DwarfUsesAbsoluteLabelForStmtList - True if DW_AT_stmt_list needs
- /// absolute label instead of offset.
- bool DwarfUsesAbsoluteLabelForStmtList; // Defaults to true;
+ /// DwarfUsesRelocationsAcrossSections - True if Dwarf2 output generally
+ /// uses relocations for references to other .debug_* sections.
+ bool DwarfUsesRelocationsAcrossSections;
- // DwarfUsesLabelOffsetDifference - True if Dwarf2 output can
- // use EmitLabelOffsetDifference.
- bool DwarfUsesLabelOffsetForRanges;
+ /// DwarfRegNumForCFI - True if dwarf register numbers are printed
+ /// instead of symbolic register names in .cfi_* directives.
+ bool DwarfRegNumForCFI; // Defaults to false;
- //===--- CBE Asm Translation Table -----------------------------------===//
+ //===--- Prologue State ----------------------------------------------===//
- const char *const *AsmTransCBE; // Defaults to empty
+ std::vector<MCCFIInstruction> InitialFrameState;
public:
explicit MCAsmInfo();
static unsigned getSLEB128Size(int Value);
static unsigned getULEB128Size(unsigned Value);
+ /// getPointerSize - Get the pointer size in bytes.
+ unsigned getPointerSize() const {
+ return PointerSize;
+ }
+
+ /// getCalleeSaveStackSlotSize - Get the callee-saved register stack slot
+ /// size in bytes.
+ unsigned getCalleeSaveStackSlotSize() const {
+ return CalleeSaveStackSlotSize;
+ }
+
+ /// isLittleEndian - True if the target is little endian.
+ bool isLittleEndian() const {
+ return IsLittleEndian;
+ }
+
+ /// isStackGrowthDirectionUp - True if target stack grow up.
+ bool isStackGrowthDirectionUp() const {
+ return StackGrowsUp;
+ }
+
bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; }
// Data directive accessors.
const char *getData64bitsDirective(unsigned AS = 0) const {
return AS == 0 ? Data64bitsDirective : getDataASDirective(64, AS);
}
+ const char *getGPRel64Directive() const { return GPRel64Directive; }
const char *getGPRel32Directive() const { return GPRel32Directive; }
/// getNonexecutableStackSection - Targets can implement this method to
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;
}
return HasMicrosoftFastStdCallMangling;
}
+ bool needsDwarfSectionOffsetDirective() const {
+ return NeedsDwarfSectionOffsetDirective;
+ }
+
// Accessors.
//
bool hasMachoZeroFillDirective() const { return HasMachoZeroFillDirective; }
bool hasStaticCtorDtorReferenceInStaticMode() const {
return HasStaticCtorDtorReferenceInStaticMode;
}
+ 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 *getLabelSuffix() const {
return LabelSuffix;
}
+
+ const char *getDebugLabelSuffix() const {
+ return DebugLabelSuffix;
+ }
+
const char *getGlobalPrefix() const {
return GlobalPrefix;
}
const char *getInlineAsmEnd() const {
return InlineAsmEnd;
}
+ const char *getCode16Directive() const {
+ return Code16Directive;
+ }
+ const char *getCode32Directive() const {
+ return Code32Directive;
+ }
+ const char *getCode64Directive() const {
+ return Code64Directive;
+ }
unsigned getAssemblerDialect() const {
return AssemblerDialect;
}
bool doesAllowPeriodsInName() const {
return AllowPeriodsInName;
}
+ bool doesAllowUTF8() const {
+ return AllowUTF8;
+ }
+ bool doesSupportDataRegionDirectives() const {
+ return UseDataRegionDirectives;
+ }
const char *getZeroDirective() const {
return ZeroDirective;
}
return ExternDirective;
}
bool hasSetDirective() const { return HasSetDirective; }
- bool hasLCOMMDirective() const { return HasLCOMMDirective; }
- bool hasDotTypeDotSizeDirective() const {return HasDotTypeDotSizeDirective;}
+ bool hasAggressiveSymbolFolding() const {
+ return HasAggressiveSymbolFolding;
+ }
bool getCOMMDirectiveAlignmentIsInBytes() const {
return COMMDirectiveAlignmentIsInBytes;
}
+ LCOMM::LCOMMType getLCOMMDirectiveAlignmentType() const {
+ return LCOMMDirectiveAlignmentType;
+ }
+ bool hasDotTypeDotSizeDirective() const {return HasDotTypeDotSizeDirective;}
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 hasLEB128() const {
return HasLEB128;
}
- bool hasDotLocAndDotFile() const {
- return HasDotLocAndDotFile;
- }
bool doesSupportDebugInformation() const {
return SupportsDebugInformation;
}
ExceptionHandling::ExceptionsType getExceptionHandlingType() const {
return ExceptionsType;
}
- bool doesDwarfRequireFrameSection() const {
- return DwarfRequiresFrameSection;
+ bool isExceptionHandlingDwarf() const {
+ return
+ (ExceptionsType == ExceptionHandling::DwarfCFI ||
+ ExceptionsType == ExceptionHandling::ARM ||
+ ExceptionsType == ExceptionHandling::Win64);
}
- bool doesDwarfUsesInlineInfoSection() const {
+ bool doesDwarfUseInlineInfoSection() const {
return DwarfUsesInlineInfoSection;
}
- const char *getDwarfSectionOffsetDirective() const {
- return DwarfSectionOffsetDirective;
+ bool doesDwarfUseRelocationsAcrossSections() const {
+ return DwarfUsesRelocationsAcrossSections;
}
- bool doesDwarfUsesAbsoluteLabelForStmtList() const {
- return DwarfUsesAbsoluteLabelForStmtList;
+ bool useDwarfRegNumForCFI() const {
+ return DwarfRegNumForCFI;
}
- bool doesDwarfUsesLabelOffsetForRanges() const {
- return DwarfUsesLabelOffsetForRanges;
+
+ void addInitialFrameState(const MCCFIInstruction &Inst) {
+ InitialFrameState.push_back(Inst);
}
- const char *const *getAsmCBE() const {
- return AsmTransCBE;
+
+ const std::vector<MCCFIInstruction> &getInitialFrameState() const {
+ return InitialFrameState;
}
};
}
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