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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
This commit is contained in:
Jim Laskey
parent
563321a258
commit
ec0d9fe2b2
427
include/llvm/Target/TargetAsmInfo.h
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427
include/llvm/Target/TargetAsmInfo.h
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//===-- llvm/Target/TargetAsmInfo.h - Asm info ------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by James M. Laskey and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains a class to be used as the basis for target specific
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// asm writers. This class primarily takes care of global printing constants,
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// which are used in very similar ways across all targets.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TARGET_ASM_INFO_H
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#define LLVM_TARGET_ASM_INFO_H
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/Support/DataTypes.h"
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namespace llvm {
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/// TargetAsmInfo - This class is intended to be used as a base class for asm
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/// properties and features specific to the target.
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class TargetAsmInfo {
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protected:
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//===------------------------------------------------------------------===//
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// Properties to be set by the target writer, used to configure asm printer.
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//
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/// TextSection - Section directive for standard text.
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///
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const char *TextSection; // Defaults to ".text".
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/// DataSection - Section directive for standard data.
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///
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const char *DataSection; // Defaults to ".data".
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/// AddressSize - Size of addresses used in file.
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///
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unsigned AddressSize; // Defaults to 4.
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/// NeedsSet - True if target asm can't compute addresses on data
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/// directives.
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bool NeedsSet; // Defaults to false.
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/// CommentString - This indicates the comment character used by the
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/// assembler.
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const char *CommentString; // Defaults to "#"
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/// GlobalPrefix - If this is set to a non-empty string, it is prepended
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/// onto all global symbols. This is often used for "_" or ".".
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const char *GlobalPrefix; // Defaults to ""
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/// PrivateGlobalPrefix - This prefix is used for globals like constant
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/// pool entries that are completely private to the .o file and should not
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/// have names in the .o file. This is often "." or "L".
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const char *PrivateGlobalPrefix; // Defaults to "."
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/// GlobalVarAddrPrefix/Suffix - If these are nonempty, these strings
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/// will enclose any GlobalVariable (that isn't a function)
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///
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const char *GlobalVarAddrPrefix; // Defaults to ""
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const char *GlobalVarAddrSuffix; // Defaults to ""
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/// FunctionAddrPrefix/Suffix - If these are nonempty, these strings
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/// will enclose any GlobalVariable that points to a function.
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/// For example, this is used by the IA64 backend to materialize
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/// function descriptors, by decorating the ".data8" object with the
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/// \literal @fptr( ) \endliteral
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/// link-relocation operator.
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///
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const char *FunctionAddrPrefix; // Defaults to ""
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const char *FunctionAddrSuffix; // Defaults to ""
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/// InlineAsmStart/End - If these are nonempty, they contain a directive to
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/// emit before and after an inline assembly statement.
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const char *InlineAsmStart; // Defaults to "#APP\n"
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const char *InlineAsmEnd; // Defaults to "#NO_APP\n"
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//===--- Data Emission Directives -------------------------------------===//
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/// ZeroDirective - this should be set to the directive used to get some
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/// number of zero bytes emitted to the current section. Common cases are
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/// "\t.zero\t" and "\t.space\t". If this is set to null, the
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/// Data*bitsDirective's will be used to emit zero bytes.
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const char *ZeroDirective; // Defaults to "\t.zero\t"
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const char *ZeroDirectiveSuffix; // Defaults to ""
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/// AsciiDirective - This directive allows emission of an ascii string with
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/// the standard C escape characters embedded into it.
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const char *AsciiDirective; // Defaults to "\t.ascii\t"
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/// AscizDirective - If not null, this allows for special handling of
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/// zero terminated strings on this target. This is commonly supported as
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/// ".asciz". If a target doesn't support this, it can be set to null.
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const char *AscizDirective; // Defaults to "\t.asciz\t"
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/// DataDirectives - These directives are used to output some unit of
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/// integer data to the current section. If a data directive is set to
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/// null, smaller data directives will be used to emit the large sizes.
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const char *Data8bitsDirective; // Defaults to "\t.byte\t"
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const char *Data16bitsDirective; // Defaults to "\t.short\t"
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const char *Data32bitsDirective; // Defaults to "\t.long\t"
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const char *Data64bitsDirective; // Defaults to "\t.quad\t"
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//===--- Alignment Information ----------------------------------------===//
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/// AlignDirective - The directive used to emit round up to an alignment
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/// boundary.
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///
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const char *AlignDirective; // Defaults to "\t.align\t"
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/// AlignmentIsInBytes - If this is true (the default) then the asmprinter
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/// emits ".align N" directives, where N is the number of bytes to align to.
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/// Otherwise, it emits ".align log2(N)", e.g. 3 to align to an 8 byte
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/// boundary.
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bool AlignmentIsInBytes; // Defaults to true
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//===--- Section Switching Directives ---------------------------------===//
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/// SwitchToSectionDirective - This is the directive used when we want to
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/// emit a global to an arbitrary section. The section name is emited after
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/// this.
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const char *SwitchToSectionDirective; // Defaults to "\t.section\t"
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/// TextSectionStartSuffix - This is printed after each start of section
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/// directive for text sections.
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const char *TextSectionStartSuffix; // Defaults to "".
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/// DataSectionStartSuffix - This is printed after each start of section
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/// directive for data sections.
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const char *DataSectionStartSuffix; // Defaults to "".
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/// SectionEndDirectiveSuffix - If non-null, the asm printer will close each
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/// section with the section name and this suffix printed.
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const char *SectionEndDirectiveSuffix;// Defaults to null.
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/// ConstantPoolSection - This is the section that we SwitchToSection right
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/// before emitting the constant pool for a function.
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const char *ConstantPoolSection; // Defaults to "\t.section .rodata\n"
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/// JumpTableDataSection - This is the section that we SwitchToSection right
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/// before emitting the jump tables for a function when the relocation model
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/// is not PIC.
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const char *JumpTableDataSection; // Defaults to "\t.section .rodata\n"
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/// JumpTableTextSection - This is the section that we SwitchToSection right
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/// before emitting the jump tables for a function when the relocation model
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/// is PIC.
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const char *JumpTableTextSection; // Defaults to "\t.text\n"
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/// StaticCtorsSection - This is the directive that is emitted to switch to
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/// a section to emit the static constructor list.
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/// Defaults to "\t.section .ctors,\"aw\",@progbits".
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const char *StaticCtorsSection;
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/// StaticDtorsSection - This is the directive that is emitted to switch to
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/// a section to emit the static destructor list.
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/// Defaults to "\t.section .dtors,\"aw\",@progbits".
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const char *StaticDtorsSection;
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/// FourByteConstantSection, EightByteConstantSection,
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/// SixteenByteConstantSection - These are special sections where we place
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/// 4-, 8-, and 16- byte constant literals.
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const char *FourByteConstantSection;
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const char *EightByteConstantSection;
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const char *SixteenByteConstantSection;
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//===--- Global Variable Emission Directives --------------------------===//
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/// SetDirective - This is the name of a directive that can be used to tell
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/// the assembler to set the value of a variable to some expression.
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const char *SetDirective; // Defaults to null.
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/// LCOMMDirective - This is the name of a directive (if supported) that can
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/// be used to efficiently declare a local (internal) block of zero
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/// initialized data in the .bss/.data section. The syntax expected is:
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/// \literal <LCOMMDirective> SYMBOLNAME LENGTHINBYTES, ALIGNMENT
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/// \endliteral
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const char *LCOMMDirective; // Defaults to null.
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const char *COMMDirective; // Defaults to "\t.comm\t".
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/// COMMDirectiveTakesAlignment - True if COMMDirective take a third
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/// argument that specifies the alignment of the declaration.
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bool COMMDirectiveTakesAlignment; // Defaults to true.
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/// HasDotTypeDotSizeDirective - True if the target has .type and .size
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/// directives, this is true for most ELF targets.
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bool HasDotTypeDotSizeDirective; // Defaults to true.
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//===--- Dwarf Emission Directives -----------------------------------===//
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/// HasLEB128 - True if target asm supports leb128 directives.
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///
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bool HasLEB128; // Defaults to false.
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/// hasDotLoc - True if target asm supports .loc directives.
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///
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bool HasDotLoc; // Defaults to false.
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/// HasDotFile - True if target asm supports .file directives.
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///
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bool HasDotFile; // Defaults to false.
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/// DwarfAbbrevSection - Section directive for Dwarf abbrev.
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///
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const char *DwarfAbbrevSection; // Defaults to ".debug_abbrev".
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/// DwarfInfoSection - Section directive for Dwarf info.
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///
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const char *DwarfInfoSection; // Defaults to ".debug_info".
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/// DwarfLineSection - Section directive for Dwarf info.
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///
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const char *DwarfLineSection; // Defaults to ".debug_line".
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/// DwarfFrameSection - Section directive for Dwarf info.
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///
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const char *DwarfFrameSection; // Defaults to ".debug_frame".
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/// DwarfPubNamesSection - Section directive for Dwarf info.
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///
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const char *DwarfPubNamesSection; // Defaults to ".debug_pubnames".
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/// DwarfPubTypesSection - Section directive for Dwarf info.
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///
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const char *DwarfPubTypesSection; // Defaults to ".debug_pubtypes".
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/// DwarfStrSection - Section directive for Dwarf info.
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///
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const char *DwarfStrSection; // Defaults to ".debug_str".
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/// DwarfLocSection - Section directive for Dwarf info.
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///
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const char *DwarfLocSection; // Defaults to ".debug_loc".
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/// DwarfARangesSection - Section directive for Dwarf info.
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///
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const char *DwarfARangesSection; // Defaults to ".debug_aranges".
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/// DwarfRangesSection - Section directive for Dwarf info.
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///
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const char *DwarfRangesSection; // Defaults to ".debug_ranges".
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/// DwarfMacInfoSection - Section directive for Dwarf info.
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///
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const char *DwarfMacInfoSection; // Defaults to ".debug_macinfo".
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public:
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TargetAsmInfo();
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//
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// Accessors.
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//
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const char *getTextSection() const {
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return TextSection;
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}
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const char *getDataSection() const {
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return DataSection;
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}
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unsigned getAddressSize() const {
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return AddressSize;
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}
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bool getNeedsSet() const {
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return NeedsSet;
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}
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const char *getCommentString() const {
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return CommentString;
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}
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const char *getGlobalPrefix() const {
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return GlobalPrefix;
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}
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const char *getPrivateGlobalPrefix() const {
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return PrivateGlobalPrefix;
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}
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const char *getGlobalVarAddrPrefix() const {
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return GlobalVarAddrPrefix;
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}
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const char *getGlobalVarAddrSuffix() const {
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return GlobalVarAddrSuffix;
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}
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const char *getFunctionAddrPrefix() const {
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return FunctionAddrPrefix;
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}
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const char *getFunctionAddrSuffix() const {
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return FunctionAddrSuffix;
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}
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const char *getInlineAsmStart() const {
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return InlineAsmStart;
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}
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const char *getInlineAsmEnd() const {
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return InlineAsmEnd;
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}
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const char *getZeroDirective() const {
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return ZeroDirective;
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}
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const char *getZeroDirectiveSuffix() const {
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return ZeroDirectiveSuffix;
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}
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const char *getAsciiDirective() const {
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return AsciiDirective;
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}
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const char *getAscizDirective() const {
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return AscizDirective;
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}
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const char *getData8bitsDirective() const {
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return Data8bitsDirective;
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}
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const char *getData16bitsDirective() const {
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return Data16bitsDirective;
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}
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const char *getData32bitsDirective() const {
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return Data32bitsDirective;
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}
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const char *getData64bitsDirective() const {
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return Data64bitsDirective;
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}
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const char *getAlignDirective() const {
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return AlignDirective;
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}
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bool getAlignmentIsInBytes() const {
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return AlignmentIsInBytes;
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}
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const char *getSwitchToSectionDirective() const {
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return SwitchToSectionDirective;
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}
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const char *getTextSectionStartSuffix() const {
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return TextSectionStartSuffix;
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}
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const char *getDataSectionStartSuffix() const {
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return DataSectionStartSuffix;
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}
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const char *getSectionEndDirectiveSuffix() const {
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return SectionEndDirectiveSuffix;
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}
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const char *getConstantPoolSection() const {
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return ConstantPoolSection;
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}
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const char *getJumpTableDataSection() const {
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return JumpTableDataSection;
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}
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const char *getJumpTableTextSection() const {
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return JumpTableTextSection;
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}
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const char *getStaticCtorsSection() const {
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return StaticCtorsSection;
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}
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const char *getStaticDtorsSection() const {
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return StaticDtorsSection;
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}
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const char *getFourByteConstantSection() const {
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return FourByteConstantSection;
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}
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const char *getEightByteConstantSection() const {
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return EightByteConstantSection;
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}
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const char *getSixteenByteConstantSection() const {
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return SixteenByteConstantSection;
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}
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const char *getSetDirective() const {
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return SetDirective;
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}
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const char *getLCOMMDirective() const {
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return LCOMMDirective;
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}
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const char *getCOMMDirective() const {
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return COMMDirective;
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}
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bool getCOMMDirectiveTakesAlignment() const {
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return COMMDirectiveTakesAlignment;
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}
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bool hasDotTypeDotSizeDirective() const {
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return HasDotTypeDotSizeDirective;
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}
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bool hasLEB128() const {
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return HasLEB128;
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}
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bool hasDotLoc() const {
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return HasDotLoc;
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}
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bool hasDotFile() const {
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return HasDotFile;
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}
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const char *getDwarfAbbrevSection() const {
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return DwarfAbbrevSection;
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}
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const char *getDwarfInfoSection() const {
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return DwarfInfoSection;
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}
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const char *getDwarfLineSection() const {
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return DwarfLineSection;
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}
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const char *getDwarfFrameSection() const {
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return DwarfFrameSection;
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}
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const char *getDwarfPubNamesSection() const {
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return DwarfPubNamesSection;
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}
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const char *getDwarfPubTypesSection() const {
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return DwarfPubTypesSection;
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}
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const char *getDwarfStrSection() const {
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return DwarfStrSection;
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}
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const char *getDwarfLocSection() const {
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return DwarfLocSection;
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}
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const char *getDwarfARangesSection() const {
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return DwarfARangesSection;
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}
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const char *getDwarfRangesSection() const {
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return DwarfRangesSection;
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}
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const char *getDwarfMacInfoSection() const {
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return DwarfMacInfoSection;
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}
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};
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}
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#endif
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74
lib/Target/TargetAsmInfo.cpp
Normal file
74
lib/Target/TargetAsmInfo.cpp
Normal file
@ -0,0 +1,74 @@
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//===-- TargetData.cpp - Data size & alignment routines --------------------==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by James M. Laskey and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines target asm properties related what form asm statements
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// should take.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Target/TargetAsmInfo.h"
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using namespace llvm;
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TargetAsmInfo::TargetAsmInfo() :
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TextSection(".text"),
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DataSection(".data"),
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AddressSize(4),
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NeedsSet(false),
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CommentString("#"),
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GlobalPrefix(""),
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PrivateGlobalPrefix("."),
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GlobalVarAddrPrefix(""),
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GlobalVarAddrSuffix(""),
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FunctionAddrPrefix(""),
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FunctionAddrSuffix(""),
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InlineAsmStart("#APP"),
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InlineAsmEnd("#NO_APP"),
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ZeroDirective("\t.zero\t"),
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ZeroDirectiveSuffix(0),
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AsciiDirective("\t.ascii\t"),
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AscizDirective("\t.asciz\t"),
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Data8bitsDirective("\t.byte\t"),
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Data16bitsDirective("\t.short\t"),
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Data32bitsDirective("\t.long\t"),
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Data64bitsDirective("\t.quad\t"),
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AlignDirective("\t.align\t"),
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AlignmentIsInBytes(true),
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SwitchToSectionDirective("\t.section\t"),
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TextSectionStartSuffix(""),
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DataSectionStartSuffix(""),
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SectionEndDirectiveSuffix(0),
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ConstantPoolSection("\t.section .rodata\n"),
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JumpTableDataSection("\t.section .rodata\n"),
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JumpTableTextSection("\t.text\n"),
|
||||
StaticCtorsSection("\t.section .ctors,\"aw\",@progbits"),
|
||||
StaticDtorsSection("\t.section .dtors,\"aw\",@progbits"),
|
||||
FourByteConstantSection(0),
|
||||
EightByteConstantSection(0),
|
||||
SixteenByteConstantSection(0),
|
||||
SetDirective(0),
|
||||
LCOMMDirective(0),
|
||||
COMMDirective("\t.comm\t"),
|
||||
COMMDirectiveTakesAlignment(true),
|
||||
HasDotTypeDotSizeDirective(true),
|
||||
HasLEB128(false),
|
||||
HasDotLoc(false),
|
||||
HasDotFile(false),
|
||||
DwarfAbbrevSection(".debug_abbrev"),
|
||||
DwarfInfoSection(".debug_info"),
|
||||
DwarfLineSection(".debug_line"),
|
||||
DwarfFrameSection(".debug_frame"),
|
||||
DwarfPubNamesSection(".debug_pubnames"),
|
||||
DwarfPubTypesSection(".debug_pubtypes"),
|
||||
DwarfStrSection(".debug_str"),
|
||||
DwarfLocSection(".debug_loc"),
|
||||
DwarfARangesSection(".debug_aranges"),
|
||||
DwarfRangesSection(".debug_ranges"),
|
||||
DwarfMacInfoSection(".debug_macinfo")
|
||||
{}
|
||||
Loading…
x
Reference in New Issue
Block a user