#ifndef LLVM_TARGET_ASM_INFO_H
#define LLVM_TARGET_ASM_INFO_H
+#include "llvm/MC/MCDirectives.h"
#include <cassert>
namespace llvm {
+ class MCSection;
+ 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 }; }
// Properties to be set by the target writer, used to configure asm printer.
//
- /// NonexecutableStackDirective - Directive for declaring to the
- /// linker and beyond that the emitted code does not require stack
- /// memory to be executable.
- const char *NonexecutableStackDirective; // Default is null.
-
+ /// 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.
/// the assembler to set the value of a variable to some expression.
const char *SetDirective; // Defaults to null.
- /// LCOMMDirective - This is the name of a directive (if supported) that can
- /// be used to efficiently declare a local (internal) block of zero
- /// initialized data in the .bss/.data section. The syntax expected is:
- /// @verbatim <LCOMMDirective> SYMBOLNAME LENGTHINBYTES
- /// @endverbatim
- const char *LCOMMDirective; // Defaults to null.
+ /// HasLCOMMDirective - This is true if the target supports the .lcomm
+ /// directive.
+ bool HasLCOMMDirective; // Defaults to false.
- const char *COMMDirective; // Defaults to "\t.comm\t".
-
/// COMMDirectiveTakesAlignment - True if COMMDirective take a third
/// argument that specifies the alignment of the declaration.
bool COMMDirectiveTakesAlignment; // Defaults to true.
/// .file directive, this is true for ELF targets.
bool HasSingleParameterDotFile; // 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.
+ /// HasNoDeadStrip - True if this target supports the MachO .no_dead_strip
+ /// directive.
+ bool HasNoDeadStrip; // Defaults to false.
/// WeakRefDirective - This directive, if non-null, is used to declare a
/// global as being a weak undefined symbol.
/// global as being a weak defined symbol. This is used on cygwin/mingw.
const char *LinkOnceDirective; // 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".
+ /// HiddenVisibilityAttr - This attribute, if not MCSA_Invalid, is used to
+ /// declare a symbol as having hidden visibility.
+ MCSymbolAttr HiddenVisibilityAttr; // Defaults to MCSA_Hidden.
- /// ProtectedDirective - This directive, if non-null, is used to declare a
- /// global or function as having protected visibility.
- const char *ProtectedDirective; // Defaults to "\t.protected\t".
+ /// 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 -----------------------------------===//
explicit MCAsmInfo();
virtual ~MCAsmInfo();
- /// getSLEB128Size - Compute the number of bytes required for a signed
- /// leb128 value.
+ // FIXME: move these methods to DwarfPrinter when the JIT stops using them.
static unsigned getSLEB128Size(int Value);
-
- /// getULEB128Size - Compute the number of bytes required for an unsigned
- /// leb128 value.
static unsigned getULEB128Size(unsigned Value);
+ bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; }
+
// Data directive accessors.
//
const char *getData8bitsDirective(unsigned AS = 0) const {
return AS == 0 ? Data64bitsDirective : getDataASDirective(64, AS);
}
+ /// 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 {
+ return 0;
+ }
bool usesSunStyleELFSectionSwitchSyntax() const {
return SunStyleELFSectionSwitchSyntax;
bool hasStaticCtorDtorReferenceInStaticMode() const {
return HasStaticCtorDtorReferenceInStaticMode;
}
- const char *getNonexecutableStackDirective() const {
- return NonexecutableStackDirective;
- }
bool needsSet() const {
return NeedsSet;
}
const char *getSetDirective() const {
return SetDirective;
}
- const char *getLCOMMDirective() const {
- return LCOMMDirective;
- }
- const char *getCOMMDirective() const {
- return COMMDirective;
- }
+ bool hasLCOMMDirective() const { return HasLCOMMDirective; }
bool getCOMMDirectiveTakesAlignment() const {
return COMMDirectiveTakesAlignment;
}
- bool hasDotTypeDotSizeDirective() const {
- return HasDotTypeDotSizeDirective;
- }
- bool hasSingleParameterDotFile() const {
- return HasSingleParameterDotFile;
- }
- const char *getUsedDirective() const {
- return UsedDirective;
- }
+ bool hasDotTypeDotSizeDirective() const {return HasDotTypeDotSizeDirective;}
+ bool hasSingleParameterDotFile() const { return HasSingleParameterDotFile; }
+ bool hasNoDeadStrip() const { return HasNoDeadStrip; }
const char *getWeakRefDirective() const { return WeakRefDirective; }
const char *getWeakDefDirective() const { return WeakDefDirective; }
const char *getLinkOnceDirective() const { return LinkOnceDirective; }
- const char *getHiddenDirective() const {
- return HiddenDirective;
- }
- const char *getProtectedDirective() const {
- return ProtectedDirective;
+
+ MCSymbolAttr getHiddenVisibilityAttr() const { return HiddenVisibilityAttr;}
+ MCSymbolAttr getProtectedVisibilityAttr() const {
+ return ProtectedVisibilityAttr;
}
bool isAbsoluteDebugSectionOffsets() const {
return AbsoluteDebugSectionOffsets;
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