Separate target specifc asm properties from asm printers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30127 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 427 insertions, 0 deletions

diff --git a/include/llvm/Target/TargetAsmInfo.h b/include/llvm/Target/TargetAsmInfo.h
new file mode 100644
index 0000000..56c2517
--- /dev/null
+++ b/include/llvm/Target/TargetAsmInfo.h
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+//===-- llvm/Target/TargetAsmInfo.h - Asm info ------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by James M. Laskey and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains a class to be used as the basis for target specific
+// asm writers.  This class primarily takes care of global printing constants,
+// which are used in very similar ways across all targets.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TARGET_ASM_INFO_H
+#define LLVM_TARGET_ASM_INFO_H
+
+#include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/Support/DataTypes.h"
+
+namespace llvm {
+
+  /// 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.
+    ///
+    const char *TextSection;              // Defaults to ".text".
+    
+    /// DataSection - Section directive for standard data.
+    ///
+    const char *DataSection;              // Defaults to ".data".
+    
+    /// 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.
+
+    /// 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 assembly 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 ---------------------------------===//
+    
+    /// 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.
+    
+    //===--- Dwarf Emission Directives -----------------------------------===//
+
+    /// HasLEB128 - True if target asm supports leb128 directives.
+    ///
+    bool HasLEB128; // Defaults to false.
+    
+    /// hasDotLoc - True if target asm supports .loc directives.
+    ///
+    bool HasDotLoc; // Defaults to false.
+    
+    /// HasDotFile - True if target asm supports .file directives.
+    ///
+    bool HasDotFile; // Defaults to false.
+    
+    /// DwarfAbbrevSection - Section directive for Dwarf abbrev.
+    ///
+    const char *DwarfAbbrevSection; // Defaults to ".debug_abbrev".
+
+    /// DwarfInfoSection - Section directive for Dwarf info.
+    ///
+    const char *DwarfInfoSection; // Defaults to ".debug_info".
+
+    /// DwarfLineSection - Section directive for Dwarf info.
+    ///
+    const char *DwarfLineSection; // Defaults to ".debug_line".
+    
+    /// DwarfFrameSection - Section directive for Dwarf info.
+    ///
+    const char *DwarfFrameSection; // Defaults to ".debug_frame".
+    
+    /// DwarfPubNamesSection - Section directive for Dwarf info.
+    ///
+    const char *DwarfPubNamesSection; // Defaults to ".debug_pubnames".
+    
+    /// DwarfPubTypesSection - Section directive for Dwarf info.
+    ///
+    const char *DwarfPubTypesSection; // Defaults to ".debug_pubtypes".
+    
+    /// DwarfStrSection - Section directive for Dwarf info.
+    ///
+    const char *DwarfStrSection; // Defaults to ".debug_str".
+
+    /// DwarfLocSection - Section directive for Dwarf info.
+    ///
+    const char *DwarfLocSection; // Defaults to ".debug_loc".
+
+    /// DwarfARangesSection - Section directive for Dwarf info.
+    ///
+    const char *DwarfARangesSection; // Defaults to ".debug_aranges".
+
+    /// DwarfRangesSection - Section directive for Dwarf info.
+    ///
+    const char *DwarfRangesSection; // Defaults to ".debug_ranges".
+
+    /// DwarfMacInfoSection - Section directive for Dwarf info.
+    ///
+    const char *DwarfMacInfoSection; // Defaults to ".debug_macinfo".
+
+
+  public:
+    TargetAsmInfo();
+        
+    //
+    // Accessors.
+    //
+    const char *getTextSection() const {
+      return TextSection;
+    }
+    const char *getDataSection() const {
+      return DataSection;
+    }
+    unsigned getAddressSize() const {
+      return AddressSize;
+    }
+    bool getNeedsSet() const {
+      return NeedsSet;
+    }
+    const char *getCommentString() const {
+      return CommentString;
+    }
+    const char *getGlobalPrefix() const {
+      return GlobalPrefix;
+    }
+    const char *getPrivateGlobalPrefix() const {
+      return PrivateGlobalPrefix;
+    }
+    const char *getGlobalVarAddrPrefix() const {
+      return GlobalVarAddrPrefix;
+    }
+    const char *getGlobalVarAddrSuffix() const {
+      return GlobalVarAddrSuffix;
+    }
+    const char *getFunctionAddrPrefix() const {
+      return FunctionAddrPrefix;
+    }
+    const char *getFunctionAddrSuffix() const {
+      return FunctionAddrSuffix;
+    }
+    const char *getInlineAsmStart() const {
+      return InlineAsmStart;
+    }
+    const char *getInlineAsmEnd() const {
+      return InlineAsmEnd;
+    }
+    const char *getZeroDirective() const {
+      return ZeroDirective;
+    }
+    const char *getZeroDirectiveSuffix() const {
+      return ZeroDirectiveSuffix;
+    }
+    const char *getAsciiDirective() const {
+      return AsciiDirective;
+    }
+    const char *getAscizDirective() const {
+      return AscizDirective;
+    }
+    const char *getData8bitsDirective() const {
+      return Data8bitsDirective;
+    }
+    const char *getData16bitsDirective() const {
+      return Data16bitsDirective;
+    }
+    const char *getData32bitsDirective() const {
+      return Data32bitsDirective;
+    }
+    const char *getData64bitsDirective() const {
+      return Data64bitsDirective;
+    }
+    const char *getAlignDirective() const {
+      return AlignDirective;
+    }
+    bool getAlignmentIsInBytes() const {
+      return AlignmentIsInBytes;
+    }
+    const char *getSwitchToSectionDirective() const {
+      return SwitchToSectionDirective;
+    }
+    const char *getTextSectionStartSuffix() const {
+      return TextSectionStartSuffix;
+    }
+    const char *getDataSectionStartSuffix() const {
+      return DataSectionStartSuffix;
+    }
+    const char *getSectionEndDirectiveSuffix() const {
+      return SectionEndDirectiveSuffix;
+    }
+    const char *getConstantPoolSection() const {
+      return ConstantPoolSection;
+    }
+    const char *getJumpTableDataSection() const {
+      return JumpTableDataSection;
+    }
+    const char *getJumpTableTextSection() const {
+      return JumpTableTextSection;
+    }
+    const char *getStaticCtorsSection() const {
+      return StaticCtorsSection;
+    }
+    const char *getStaticDtorsSection() const {
+      return StaticDtorsSection;
+    }
+    const char *getFourByteConstantSection() const {
+      return FourByteConstantSection;
+    }
+    const char *getEightByteConstantSection() const {
+      return EightByteConstantSection;
+    }
+    const char *getSixteenByteConstantSection() const {
+      return SixteenByteConstantSection;
+    }
+    const char *getSetDirective() const {
+      return SetDirective;
+    }
+    const char *getLCOMMDirective() const {
+      return LCOMMDirective;
+    }
+    const char *getCOMMDirective() const {
+      return COMMDirective;
+    }
+    bool getCOMMDirectiveTakesAlignment() const {
+      return COMMDirectiveTakesAlignment;
+    }
+    bool hasDotTypeDotSizeDirective() const {
+      return HasDotTypeDotSizeDirective;
+    }
+    bool hasLEB128() const {
+      return HasLEB128;
+    }
+    bool hasDotLoc() const {
+      return HasDotLoc;
+    }
+    bool hasDotFile() const {
+      return HasDotFile;
+    }
+    const char *getDwarfAbbrevSection() const {
+      return DwarfAbbrevSection;
+    }
+    const char *getDwarfInfoSection() const {
+      return DwarfInfoSection;
+    }
+    const char *getDwarfLineSection() const {
+      return DwarfLineSection;
+    }
+    const char *getDwarfFrameSection() const {
+      return DwarfFrameSection;
+    }
+    const char *getDwarfPubNamesSection() const {
+      return DwarfPubNamesSection;
+    }
+    const char *getDwarfPubTypesSection() const {
+      return DwarfPubTypesSection;
+    }
+    const char *getDwarfStrSection() const {
+      return DwarfStrSection;
+    }
+    const char *getDwarfLocSection() const {
+      return DwarfLocSection;
+    }
+    const char *getDwarfARangesSection() const {
+      return DwarfARangesSection;
+    }
+    const char *getDwarfRangesSection() const {
+      return DwarfRangesSection;
+    }
+    const char *getDwarfMacInfoSection() const {
+      return DwarfMacInfoSection;
+    }
+  };
+  
+}
+
+#endif
+