#include "llvm/Support/DataTypes.h"
namespace llvm {
-
- // Forward declaration.
class TargetMachine;
+ class CallInst;
/// TargetAsmInfo - This class is intended to be used as a base class for asm
/// properties and features specific to the target.
class TargetAsmInfo {
-
protected:
//===------------------------------------------------------------------===//
// Properties to be set by the target writer, used to configure asm printer.
- //
+ //
/// TextSection - Section directive for standard text.
///
/// DataSection - Section directive for standard data.
///
const char *DataSection; // Defaults to ".data".
+
+ /// BSSSection - Section directive for uninitialized data. Null if this
+ /// target doesn't support a BSS section.
+ ///
+ const char *BSSSection; // Default to ".bss".
+
+ /// ZeroFillDirective - Directive for emitting a global to the ZeroFill
+ /// section on this target. Null if this target doesn't support zerofill.
+ const char *ZeroFillDirective; // Default is null.
/// AddressSize - Size of addresses used in file.
///
unsigned AddressSize; // Defaults to 4.
-
+
/// NeedsSet - True if target asm can't compute addresses on data
/// directives.
bool NeedsSet; // Defaults 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 ';'
/// CommentString - This indicates the comment character used by the
/// assembler.
/// have names in the .o file. This is often "." or "L".
const char *PrivateGlobalPrefix; // Defaults to "."
+ /// JumpTableSpecialLabelPrefix - If not null, a extra (dead) label is
+ /// emitted before jump tables with the specified prefix.
+ const char *JumpTableSpecialLabelPrefix; // Default to null.
+
/// GlobalVarAddrPrefix/Suffix - If these are nonempty, these strings
/// will enclose any GlobalVariable (that isn't a function)
///
/// emit before and after an inline assembly statement.
const char *InlineAsmStart; // Defaults to "#APP\n"
const char *InlineAsmEnd; // Defaults to "#NO_APP\n"
-
+
+ /// AssemblerDialect - Which dialect of an assembler variant to use.
+ unsigned AssemblerDialect; // Defaults to 0
+
//===--- Data Emission Directives -------------------------------------===//
/// ZeroDirective - this should be set to the directive used to get some
/// Otherwise, it emits ".align log2(N)", e.g. 3 to align to an 8 byte
/// boundary.
bool AlignmentIsInBytes; // Defaults to true
-
+
//===--- Section Switching Directives ---------------------------------===//
/// SwitchToSectionDirective - This is the directive used when we want to
/// is not PIC.
const char *JumpTableDataSection; // Defaults to "\t.section .rodata\n"
- /// JumpTableTextSection - This is the section that we SwitchToSection right
- /// before emitting the jump tables for a function when the relocation model
- /// is PIC.
- const char *JumpTableTextSection; // Defaults to "\t.text\n"
-
+ /// JumpTableDirective - if non-null, the directive to emit before a jump
+ /// table.
+ const char *JumpTableDirective;
+
+ /// CStringSection - If not null, this allows for special handling of
+ /// cstring constants (\0 terminated string that does not contain any
+ /// other null bytes) on this target. This is commonly supported as
+ /// ".cstring".
+ const char *CStringSection; // Defaults to NULL
+
/// StaticCtorsSection - This is the directive that is emitted to switch to
/// a section to emit the static constructor list.
/// Defaults to "\t.section .ctors,\"aw\",@progbits".
//===--- Global Variable Emission Directives --------------------------===//
+ /// GlobalDirective - This is the directive used to declare a global entity.
+ ///
+ const char *GlobalDirective; // 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.
/// directives, this is true for most ELF targets.
bool HasDotTypeDotSizeDirective; // Defaults to true.
+ /// UsedDirective - This directive, if non-null, is used to declare a global
+ /// as being used somehow that the assembler can't see. This prevents dead
+ /// code elimination on some targets.
+ const char *UsedDirective; // Defaults to null.
+
+ /// WeakRefDirective - This directive, if non-null, is used to declare a
+ /// global as being a weak undefined symbol.
+ const char *WeakRefDirective; // Defaults to null.
+
+ /// HiddenDirective - This directive, if non-null, is used to declare a
+ /// global or function as having hidden visibility.
+ const char *HiddenDirective; // Defaults to "\t.hidden\t".
+
//===--- Dwarf Emission Directives -----------------------------------===//
/// HasLEB128 - True if target asm supports leb128 directives.
///
bool HasDotFile; // Defaults to false.
+ /// SupportsExceptionHandling - True if target supports exception handling.
+ ///
+ bool SupportsExceptionHandling; // Defaults to false.
+
+ /// RequiresFrameSection - true if the Dwarf2 output needs a frame section
+ ///
+ bool DwarfRequiresFrameSection; // Defaults to true.
+
/// DwarfAbbrevSection - Section directive for Dwarf abbrev.
///
const char *DwarfAbbrevSection; // Defaults to ".debug_abbrev".
/// DwarfMacInfoSection - Section directive for Dwarf info.
///
const char *DwarfMacInfoSection; // Defaults to ".debug_macinfo".
+
+ /// DwarfEHFrameSection - Section directive for Exception frames.
+ ///
+ const char *DwarfEHFrameSection; // Defaults to ".eh_frame".
+ //===--- CBE Asm Translation Table -----------------------------------===//
+
+ const char** AsmTransCBE; // Defaults to empty
public:
TargetAsmInfo();
-
- //
+ virtual ~TargetAsmInfo();
+
+ /// Measure the specified inline asm to determine an approximation of its
+ /// length.
+ unsigned getInlineAsmLength(const char *Str) const;
+
+ /// ExpandInlineAsm - This hook allows the target to expand an inline asm
+ /// call to be explicit llvm code if it wants to. This is useful for
+ /// turning simple inline asms into LLVM intrinsics, which gives the
+ /// compiler more information about the behavior of the code.
+ virtual bool ExpandInlineAsm(CallInst *CI) const {
+ return false;
+ }
+
// Accessors.
//
const char *getTextSection() const {
const char *getDataSection() const {
return DataSection;
}
+ const char *getBSSSection() const {
+ return BSSSection;
+ }
+ const char *getZeroFillDirective() const {
+ return ZeroFillDirective;
+ }
unsigned getAddressSize() const {
return AddressSize;
}
bool needsSet() const {
return NeedsSet;
}
+ const char *getPCSymbol() const {
+ return PCSymbol;
+ }
+ char getSeparatorChar() const {
+ return SeparatorChar;
+ }
const char *getCommentString() const {
return CommentString;
}
const char *getPrivateGlobalPrefix() const {
return PrivateGlobalPrefix;
}
+ const char *getJumpTableSpecialLabelPrefix() const {
+ return JumpTableSpecialLabelPrefix;
+ }
const char *getGlobalVarAddrPrefix() const {
return GlobalVarAddrPrefix;
}
const char *getInlineAsmEnd() const {
return InlineAsmEnd;
}
+ unsigned getAssemblerDialect() const {
+ return AssemblerDialect;
+ }
const char *getZeroDirective() const {
return ZeroDirective;
}
const char *getData64bitsDirective() const {
return Data64bitsDirective;
}
+ const char *getJumpTableDirective() const {
+ return JumpTableDirective;
+ }
const char *getAlignDirective() const {
return AlignDirective;
}
const char *getJumpTableDataSection() const {
return JumpTableDataSection;
}
- const char *getJumpTableTextSection() const {
- return JumpTableTextSection;
+ const char *getCStringSection() const {
+ return CStringSection;
}
const char *getStaticCtorsSection() const {
return StaticCtorsSection;
const char *getSixteenByteConstantSection() const {
return SixteenByteConstantSection;
}
+ const char *getGlobalDirective() const {
+ return GlobalDirective;
+ }
const char *getSetDirective() const {
return SetDirective;
}
bool hasDotTypeDotSizeDirective() const {
return HasDotTypeDotSizeDirective;
}
+ const char *getUsedDirective() const {
+ return UsedDirective;
+ }
+ const char *getWeakRefDirective() const {
+ return WeakRefDirective;
+ }
+ const char *getHiddenDirective() const {
+ return HiddenDirective;
+ }
bool hasLEB128() const {
return HasLEB128;
}
bool hasDotFile() const {
return HasDotFile;
}
+ bool getSupportsExceptionHandling() const {
+ return SupportsExceptionHandling;
+ }
+ bool getDwarfRequiresFrameSection() const {
+ return DwarfRequiresFrameSection;
+ }
const char *getDwarfAbbrevSection() const {
return DwarfAbbrevSection;
}
const char *getDwarfMacInfoSection() const {
return DwarfMacInfoSection;
}
+ const char *getDwarfEHFrameSection() const {
+ return DwarfEHFrameSection;
+ }
+ const char** getAsmCBE() const {
+ return AsmTransCBE;
+ }
};
-
}
#endif
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