#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/Support/DataTypes.h"
+#include <set>
namespace llvm {
class Constant;
class ConstantArray;
class GlobalVariable;
class MachineConstantPoolEntry;
+ class MachineConstantPoolValue;
class Mangler;
class TargetAsmInfo;
///
unsigned FunctionNumber;
+ protected:
+ // Necessary for external weak linkage support
+ std::set<const GlobalValue*> ExtWeakSymbols;
+
public:
/// Output stream on which we're printing assembly code.
///
/// Target Asm Printer information.
///
- TargetAsmInfo *TAI;
+ const TargetAsmInfo *TAI;
/// Name-mangler for global names.
///
std::string CurrentSection;
protected:
- AsmPrinter(std::ostream &o, TargetMachine &TM, TargetAsmInfo *T);
+ AsmPrinter(std::ostream &o, TargetMachine &TM, const TargetAsmInfo *T);
public:
/// SwitchToTextSection - Switch to the specified section of the executable
///
/// This method is used when about to emit executable code.
///
- void SwitchToTextSection(const char *NewSection, const GlobalValue *GV);
+ void SwitchToTextSection(const char *NewSection, const GlobalValue *GV = NULL);
/// SwitchToDataSection - Switch to the specified section of the executable
/// if we are not already in it! If GV is non-null and if the global has an
/// is the same as the SwitchToTextSection method, but not all assemblers
/// are the same.
///
- void SwitchToDataSection(const char *NewSection, const GlobalValue *GV);
+ void SwitchToDataSection(const char *NewSection, const GlobalValue *GV = NULL);
- /// getPreferredAlignmentLog - Return the preferred alignment of the
- /// specified global, returned in log form. This includes an explicitly
- /// requested alignment (if the global has one).
- unsigned getPreferredAlignmentLog(const GlobalVariable *GV) const;
+ /// getGlobalLinkName - Returns the asm/link name of of the specified
+ /// global variable. Should be overridden by each target asm printer to
+ /// generate the appropriate value.
+ virtual const std::string getGlobalLinkName(const GlobalVariable *GV) const;
+
+ /// EmitExternalGlobal - Emit the external reference to a global variable.
+ /// Should be overridden if an indirect reference should be used.
+ virtual void EmitExternalGlobal(const GlobalVariable *GV);
+
protected:
/// doInitialization - Set up the AsmPrinter when we are working on a new
/// module. If your pass overrides this, it must make sure to explicitly
/// doFinalization - Shut down the asmprinter. If you override this in your
/// pass, you must make sure to call it explicitly.
bool doFinalization(Module &M);
+
+ /// PrintSpecial - Print information related to the specified machine instr
+ /// that is independent of the operand, and may be independent of the instr
+ /// itself. This can be useful for portably encoding the comment character
+ /// or other bits of target-specific knowledge into the asmstrings. The
+ /// syntax used is ${:comment}. Targets can override this to add support
+ /// for their own strange codes.
+ virtual void PrintSpecial(const MachineInstr *MI, const char *Code);
/// PrintAsmOperand - Print the specified operand of MI, an INLINEASM
/// instruction, using the specified assembler variant. Targets should
unsigned AsmVariant,
const char *ExtraCode);
+ /// getSectionForFunction - Return the section that we should emit the
+ /// specified function body into. This defaults to 'TextSection'. This
+ /// should most likely be overridden by the target to put linkonce/weak
+ /// functions into special sections.
+ virtual std::string getSectionForFunction(const Function &F) const;
+
/// SetupMachineFunction - This should be called when a new MachineFunction
/// is being processed from runOnMachineFunction.
void SetupMachineFunction(MachineFunction &MF);
/// EmitJumpTableInfo - Print assembly representations of the jump tables
/// used by the current function to the current output stream.
///
- void EmitJumpTableInfo(MachineJumpTableInfo *MJTI);
+ void EmitJumpTableInfo(MachineJumpTableInfo *MJTI, MachineFunction &MF);
/// EmitSpecialLLVMGlobal - Check to see if the specified global is a
/// special global used by LLVM. If so, emit it and return true, otherwise
/// do nothing and return false.
bool EmitSpecialLLVMGlobal(const GlobalVariable *GV);
+
+ public:
+ //===------------------------------------------------------------------===//
+ /// LEB 128 number encoding.
+
+ /// PrintULEB128 - Print a series of hexidecimal values(separated by commas)
+ /// representing an unsigned leb128 value.
+ void PrintULEB128(unsigned Value) const;
+
+ /// SizeULEB128 - Compute the number of bytes required for an unsigned
+ /// leb128 value.
+ static unsigned SizeULEB128(unsigned Value);
+
+ /// PrintSLEB128 - Print a series of hexidecimal values(separated by commas)
+ /// representing a signed leb128 value.
+ void PrintSLEB128(int Value) const;
+
+ /// SizeSLEB128 - Compute the number of bytes required for a signed leb128
+ /// value.
+ static unsigned SizeSLEB128(int Value);
+
+ //===------------------------------------------------------------------===//
+ // Emission and print routines
+ //
+
+ /// PrintHex - Print a value as a hexidecimal value.
+ ///
+ void PrintHex(int Value) const;
+
+ /// EOL - Print a newline character to asm stream. If a comment is present
+ /// then it will be printed first. Comments should not contain '\n'.
+ void EOL() const;
+ void EOL(const std::string &Comment) const;
+
+ /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
+ /// unsigned leb128 value.
+ void EmitULEB128Bytes(unsigned Value) const;
+
+ /// EmitSLEB128Bytes - print an assembler byte data directive to compose a
+ /// signed leb128 value.
+ void EmitSLEB128Bytes(int Value) const;
+
+ /// EmitInt8 - Emit a byte directive and value.
+ ///
+ void EmitInt8(int Value) const;
+
+ /// EmitInt16 - Emit a short directive and value.
+ ///
+ void EmitInt16(int Value) const;
+
+ /// EmitInt32 - Emit a long directive and value.
+ ///
+ void EmitInt32(int Value) const;
+
+ /// EmitInt64 - Emit a long long directive and value.
+ ///
+ void EmitInt64(uint64_t Value) const;
+
+ /// EmitString - Emit a string with quotes and a null terminator.
+ /// Special characters are emitted properly.
+ /// \literal (Eg. '\t') \endliteral
+ void EmitString(const std::string &String) const;
+
+ //===------------------------------------------------------------------===//
/// EmitAlignment - Emit an alignment directive to the specified power of
/// two boundary. For example, if you pass in 3 here, you will get an 8
/// an explicit alignment requested, it will override the alignment request.
void EmitAlignment(unsigned NumBits, const GlobalValue *GV = 0) const;
+ protected:
/// EmitZeros - Emit a block of zeros.
///
void EmitZeros(uint64_t NumZeros) const;
/// EmitGlobalConstant - Print a general LLVM constant to the .s file.
///
void EmitGlobalConstant(const Constant* CV);
+
+ virtual void EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV);
/// printInlineAsm - This method formats and prints the specified machine
/// instruction that is an inline asm.
void printInlineAsm(const MachineInstr *MI) const;
+ /// printLabel - This method prints a local label used by debug and
+ /// exception handling tables.
+ void printLabel(const MachineInstr *MI) const;
+
/// printBasicBlockLabel - This method prints the label for the specified
/// MachineBasicBlock
virtual void printBasicBlockLabel(const MachineBasicBlock *MBB,
/// printSetLabel - This method prints a set label for the specified
/// MachineBasicBlock
void printSetLabel(unsigned uid, const MachineBasicBlock *MBB) const;
-
+ void printSetLabel(unsigned uid, unsigned uid2,
+ const MachineBasicBlock *MBB) const;
+
+ /// printDataDirective - This method prints the asm directive for the
+ /// specified type.
+ void printDataDirective(const Type *type);
+
private:
+ void EmitLLVMUsedList(Constant *List);
void EmitXXStructorList(Constant *List);
void EmitConstantPool(unsigned Alignment, const char *Section,
std::vector<std::pair<MachineConstantPoolEntry,unsigned> > &CP);
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