//
//===----------------------------------------------------------------------===//
//
-// This class is intended to be used as a base class for target-specific
-// asmwriters. This class primarily takes care of printing global constants,
-// which are printed in a very similar way across all targets.
+// This file contains a class to be used as the base class for target specific
+// asm writers. This class primarily handles common functionality used by
+// all asm writers.
//
//===----------------------------------------------------------------------===//
namespace llvm {
class Constant;
class ConstantArray;
- class Mangler;
class GlobalVariable;
class MachineConstantPoolEntry;
+ class Mangler;
+ class TargetAsmInfo;
+
+ /// AsmPrinter - This class is intended to be used as a driving class for all
+ /// asm writers.
class AsmPrinter : public MachineFunctionPass {
/// FunctionNumber - This provides a unique ID for each function emitted in
/// this translation unit. It is autoincremented by SetupMachineFunction,
/// Target machine description.
///
TargetMachine &TM;
+
+ /// Target Asm Printer information.
+ ///
+ TargetAsmInfo *TAI;
/// Name-mangler for global names.
///
/// beginning of each call to runOnMachineFunction().
///
std::string CurrentFnName;
-
- //===------------------------------------------------------------------===//
- // Properties to be set by the derived class ctor, used to configure the
- // asmwriter.
-
- /// CommentString - This indicates the comment character used by the
- /// assembler.
- const char *CommentString; // 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 ""
-
- /// PrivateGlobalPrefix - This prefix is used for globals like constant
- /// pool entries that are completely private to the .o file and should not
- /// have names in the .o file. This is often "." or "L".
- const char *PrivateGlobalPrefix; // Defaults to "."
-
- /// GlobalVarAddrPrefix/Suffix - If these are nonempty, these strings
- /// will enclose any GlobalVariable (that isn't a function)
- ///
- const char *GlobalVarAddrPrefix; // Defaults to ""
- const char *GlobalVarAddrSuffix; // Defaults to ""
-
- /// FunctionAddrPrefix/Suffix - If these are nonempty, these strings
- /// will enclose any GlobalVariable that points to a function.
- /// For example, this is used by the IA64 backend to materialize
- /// function descriptors, by decorating the ".data8" object with the
- /// \literal @fptr( ) \endliteral
- /// link-relocation operator.
- ///
- const char *FunctionAddrPrefix; // Defaults to ""
- const char *FunctionAddrSuffix; // Defaults to ""
-
- /// InlineAsmStart/End - If these are nonempty, they contain a directive to
- /// emit before and after an inline assmebly statement.
- const char *InlineAsmStart; // Defaults to "#APP\n"
- const char *InlineAsmEnd; // Defaults to "#NO_APP\n"
-
- //===--- Data Emission Directives -------------------------------------===//
-
- /// ZeroDirective - this should be set to the directive used to get some
- /// number of zero bytes emitted to the current section. Common cases are
- /// "\t.zero\t" and "\t.space\t". If this is set to null, the
- /// Data*bitsDirective's will be used to emit zero bytes.
- const char *ZeroDirective; // Defaults to "\t.zero\t"
- const char *ZeroDirectiveSuffix; // Defaults to ""
-
- /// 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 *AscizDirective; // Defaults to "\t.asciz\t"
-
- /// DataDirectives - These directives are used to output some unit of
- /// integer data to the current section. If a data directive is set to
- /// null, smaller data directives will be used to emit the large sizes.
- const char *Data8bitsDirective; // Defaults to "\t.byte\t"
- const char *Data16bitsDirective; // Defaults to "\t.short\t"
- const char *Data32bitsDirective; // Defaults to "\t.long\t"
- const char *Data64bitsDirective; // Defaults to "\t.quad\t"
-
- //===--- Alignment Information ----------------------------------------===//
-
- /// AlignDirective - The directive used to emit round up to an alignment
- /// boundary.
- ///
- const char *AlignDirective; // Defaults to "\t.align\t"
-
- /// AlignmentIsInBytes - If this is true (the default) then the asmprinter
- /// emits ".align N" directives, where N is the number of bytes to align to.
- /// Otherwise, it emits ".align log2(N)", e.g. 3 to align to an 8 byte
- /// boundary.
- bool AlignmentIsInBytes; // Defaults to true
-
- //===--- Section Switching Directives ---------------------------------===//
/// CurrentSection - The current section we are emitting to. This is
/// controlled and used by the SwitchSection method.
std::string CurrentSection;
-
- /// SwitchToSectionDirective - This is the directive used when we want to
- /// emit a global to an arbitrary section. The section name is emited after
- /// this.
- const char *SwitchToSectionDirective; // Defaults to "\t.section\t"
-
- /// TextSectionStartSuffix - This is printed after each start of section
- /// directive for text sections.
- const char *TextSectionStartSuffix; // Defaults to "".
-
- /// DataSectionStartSuffix - This is printed after each start of section
- /// directive for data sections.
- const char *DataSectionStartSuffix; // Defaults to "".
-
- /// SectionEndDirectiveSuffix - If non-null, the asm printer will close each
- /// section with the section name and this suffix printed.
- const char *SectionEndDirectiveSuffix; // Defaults to null.
-
- /// ConstantPoolSection - This is the section that we SwitchToSection right
- /// before emitting the constant pool for a function.
- const char *ConstantPoolSection; // Defaults to "\t.section .rodata\n"
-
- /// JumpTableDataSection - This is the section that we SwitchToSection right
- /// before emitting the jump tables for a function when the relocation model
- /// 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"
-
- /// 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".
- const char *StaticCtorsSection;
-
- /// StaticDtorsSection - This is the directive that is emitted to switch to
- /// a section to emit the static destructor list.
- /// Defaults to "\t.section .dtors,\"aw\",@progbits".
- const char *StaticDtorsSection;
-
- /// FourByteConstantSection, EightByteConstantSection,
- /// SixteenByteConstantSection - These are special sections where we place
- /// 4-, 8-, and 16- byte constant literals.
- const char *FourByteConstantSection;
- const char *EightByteConstantSection;
- const char *SixteenByteConstantSection;
-
- //===--- Global Variable Emission Directives --------------------------===//
-
- /// 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.
-
- /// 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:
- /// \literal <LCOMMDirective> SYMBOLNAME LENGTHINBYTES, ALIGNMENT
- /// \endliteral
- const char *LCOMMDirective; // Defaults to null.
-
- 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.
-
- /// HasDotTypeDotSizeDirective - True if the target has .type and .size
- /// directives, this is true for most ELF targets.
- bool HasDotTypeDotSizeDirective; // Defaults to true.
protected:
- AsmPrinter(std::ostream &o, TargetMachine &TM);
+ AsmPrinter(std::ostream &o, TargetMachine &TM, TargetAsmInfo *T);
public:
/// SwitchToTextSection - Switch to the specified section of the executable
projects / oota-llvm.git / blobdiff