// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Constants
package dwarf
import "strconv"
// An Attr identifies the attribute type in a DWARF Entry's Field.
type Attr uint32
const (
AttrSibling Attr = 0x01
AttrLocation Attr = 0x02
AttrName Attr = 0x03
AttrOrdering Attr = 0x09
AttrByteSize Attr = 0x0B
AttrBitOffset Attr = 0x0C
AttrBitSize Attr = 0x0D
AttrStmtList Attr = 0x10
AttrLowpc Attr = 0x11
AttrHighpc Attr = 0x12
AttrLanguage Attr = 0x13
AttrDiscr Attr = 0x15
AttrDiscrValue Attr = 0x16
AttrVisibility Attr = 0x17
AttrImport Attr = 0x18
AttrStringLength Attr = 0x19
AttrCommonRef Attr = 0x1A
AttrCompDir Attr = 0x1B
AttrConstValue Attr = 0x1C
AttrContainingType Attr = 0x1D
AttrDefaultValue Attr = 0x1E
AttrInline Attr = 0x20
AttrIsOptional Attr = 0x21
AttrLowerBound Attr = 0x22
AttrProducer Attr = 0x25
AttrPrototyped Attr = 0x27
AttrReturnAddr Attr = 0x2A
AttrStartScope Attr = 0x2C
AttrStrideSize Attr = 0x2E
AttrUpperBound Attr = 0x2F
AttrAbstractOrigin Attr = 0x31
AttrAccessibility Attr = 0x32
AttrAddrClass Attr = 0x33
AttrArtificial Attr = 0x34
AttrBaseTypes Attr = 0x35
AttrCalling Attr = 0x36
AttrCount Attr = 0x37
AttrDataMemberLoc Attr = 0x38
AttrDeclColumn Attr = 0x39
AttrDeclFile Attr = 0x3A
AttrDeclLine Attr = 0x3B
AttrDeclaration Attr = 0x3C
AttrDiscrList Attr = 0x3D
AttrEncoding Attr = 0x3E
AttrExternal Attr = 0x3F
AttrFrameBase Attr = 0x40
AttrFriend Attr = 0x41
AttrIdentifierCase Attr = 0x42
AttrMacroInfo Attr = 0x43
AttrNamelistItem Attr = 0x44
AttrPriority Attr = 0x45
AttrSegment Attr = 0x46
AttrSpecification Attr = 0x47
AttrStaticLink Attr = 0x48
AttrType Attr = 0x49
AttrUseLocation Attr = 0x4A
AttrVarParam Attr = 0x4B
AttrVirtuality Attr = 0x4C
AttrVtableElemLoc Attr = 0x4D
AttrAllocated Attr = 0x4E
AttrAssociated Attr = 0x4F
AttrDataLocation Attr = 0x50
AttrStride Attr = 0x51
AttrEntrypc Attr = 0x52
AttrUseUTF8 Attr = 0x53
AttrExtension Attr = 0x54
AttrRanges Attr = 0x55
AttrTrampoline Attr = 0x56
AttrCallColumn Attr = 0x57
AttrCallFile Attr = 0x58
AttrCallLine Attr = 0x59
AttrDescription Attr = 0x5A
)
var attrNames = [...]string{
AttrSibling: "Sibling",
AttrLocation: "Location",
AttrName: "Name",
AttrOrdering: "Ordering",
AttrByteSize: "ByteSize",
AttrBitOffset: "BitOffset",
AttrBitSize: "BitSize",
AttrStmtList: "StmtList",
AttrLowpc: "Lowpc",
AttrHighpc: "Highpc",
AttrLanguage: "Language",
AttrDiscr: "Discr",
AttrDiscrValue: "DiscrValue",
AttrVisibility: "Visibility",
AttrImport: "Import",
AttrStringLength: "StringLength",
AttrCommonRef: "CommonRef",
AttrCompDir: "CompDir",
AttrConstValue: "ConstValue",
AttrContainingType: "ContainingType",
AttrDefaultValue: "DefaultValue",
AttrInline: "Inline",
AttrIsOptional: "IsOptional",
AttrLowerBound: "LowerBound",
AttrProducer: "Producer",
AttrPrototyped: "Prototyped",
AttrReturnAddr: "ReturnAddr",
AttrStartScope: "StartScope",
AttrStrideSize: "StrideSize",
AttrUpperBound: "UpperBound",
AttrAbstractOrigin: "AbstractOrigin",
AttrAccessibility: "Accessibility",
AttrAddrClass: "AddrClass",
AttrArtificial: "Artificial",
AttrBaseTypes: "BaseTypes",
AttrCalling: "Calling",
AttrCount: "Count",
AttrDataMemberLoc: "DataMemberLoc",
AttrDeclColumn: "DeclColumn",
AttrDeclFile: "DeclFile",
AttrDeclLine: "DeclLine",
AttrDeclaration: "Declaration",
AttrDiscrList: "DiscrList",
AttrEncoding: "Encoding",
AttrExternal: "External",
AttrFrameBase: "FrameBase",
AttrFriend: "Friend",
AttrIdentifierCase: "IdentifierCase",
AttrMacroInfo: "MacroInfo",
AttrNamelistItem: "NamelistItem",
AttrPriority: "Priority",
AttrSegment: "Segment",
AttrSpecification: "Specification",
AttrStaticLink: "StaticLink",
AttrType: "Type",
AttrUseLocation: "UseLocation",
AttrVarParam: "VarParam",
AttrVirtuality: "Virtuality",
AttrVtableElemLoc: "VtableElemLoc",
AttrAllocated: "Allocated",
AttrAssociated: "Associated",
AttrDataLocation: "DataLocation",
AttrStride: "Stride",
AttrEntrypc: "Entrypc",
AttrUseUTF8: "UseUTF8",
AttrExtension: "Extension",
AttrRanges: "Ranges",
AttrTrampoline: "Trampoline",
AttrCallColumn: "CallColumn",
AttrCallFile: "CallFile",
AttrCallLine: "CallLine",
AttrDescription: "Description",
}
func (a Attr) String() string {
if int(a) < len(attrNames) {
s := attrNames[a]
if s != "" {
return s
}
}
return strconv.Itoa(int(a))
}
func (a Attr) GoString() string {
if int(a) < len(attrNames) {
s := attrNames[a]
if s != "" {
return "dwarf.Attr" + s
}
}
return "dwarf.Attr(" + strconv.FormatInt(int64(a), 10) + ")"
}
// A format is a DWARF data encoding format.
type format uint32
const (
// value formats
formAddr format = 0x01
formDwarfBlock2 format = 0x03
formDwarfBlock4 format = 0x04
formData2 format = 0x05
formData4 format = 0x06
formData8 format = 0x07
formString format = 0x08
formDwarfBlock format = 0x09
formDwarfBlock1 format = 0x0A
formData1 format = 0x0B
formFlag format = 0x0C
formSdata format = 0x0D
formStrp format = 0x0E
formUdata format = 0x0F
formRefAddr format = 0x10
formRef1 format = 0x11
formRef2 format = 0x12
formRef4 format = 0x13
formRef8 format = 0x14
formRefUdata format = 0x15
formIndirect format = 0x16
// The following are new in DWARF 4.
formSecOffset format = 0x17
formExprloc format = 0x18
formFlagPresent format = 0x19
formRefSig8 format = 0x20
// Extensions for multi-file compression (.dwz)
// http://www.dwarfstd.org/ShowIssue.php?issue=120604.1
formGnuRefAlt format = 0x1f20
formGnuStrpAlt format = 0x1f21
)
// A Tag is the classification (the type) of an Entry.
type Tag uint32
const (
TagArrayType Tag = 0x01
TagClassType Tag = 0x02
TagEntryPoint Tag = 0x03
TagEnumerationType Tag = 0x04
TagFormalParameter Tag = 0x05
TagImportedDeclaration Tag = 0x08
TagLabel Tag = 0x0A
TagLexDwarfBlock Tag = 0x0B
TagMember Tag = 0x0D
TagPointerType Tag = 0x0F
TagReferenceType Tag = 0x10
TagCompileUnit Tag = 0x11
TagStringType Tag = 0x12
TagStructType Tag = 0x13
TagSubroutineType Tag = 0x15
TagTypedef Tag = 0x16
TagUnionType Tag = 0x17
TagUnspecifiedParameters Tag = 0x18
TagVariant Tag = 0x19
TagCommonDwarfBlock Tag = 0x1A
TagCommonInclusion Tag = 0x1B
TagInheritance Tag = 0x1C
TagInlinedSubroutine Tag = 0x1D
TagModule Tag = 0x1E
TagPtrToMemberType Tag = 0x1F
TagSetType Tag = 0x20
TagSubrangeType Tag = 0x21
TagWithStmt Tag = 0x22
TagAccessDeclaration Tag = 0x23
TagBaseType Tag = 0x24
TagCatchDwarfBlock Tag = 0x25
TagConstType Tag = 0x26
TagConstant Tag = 0x27
TagEnumerator Tag = 0x28
TagFileType Tag = 0x29
TagFriend Tag = 0x2A
TagNamelist Tag = 0x2B
TagNamelistItem Tag = 0x2C
TagPackedType Tag = 0x2D
TagSubprogram Tag = 0x2E
TagTemplateTypeParameter Tag = 0x2F
TagTemplateValueParameter Tag = 0x30
TagThrownType Tag = 0x31
TagTryDwarfBlock Tag = 0x32
TagVariantPart Tag = 0x33
TagVariable Tag = 0x34
TagVolatileType Tag = 0x35
// The following are new in DWARF 3.
TagDwarfProcedure Tag = 0x36
TagRestrictType Tag = 0x37
TagInterfaceType Tag = 0x38
TagNamespace Tag = 0x39
TagImportedModule Tag = 0x3A
TagUnspecifiedType Tag = 0x3B
TagPartialUnit Tag = 0x3C
TagImportedUnit Tag = 0x3D
TagMutableType Tag = 0x3E // Later removed from DWARF.
TagCondition Tag = 0x3F
TagSharedType Tag = 0x40
// The following are new in DWARF 4.
TagTypeUnit Tag = 0x41
TagRvalueReferenceType Tag = 0x42
TagTemplateAlias Tag = 0x43
)
var tagNames = [...]string{
TagArrayType: "ArrayType",
TagClassType: "ClassType",
TagEntryPoint: "EntryPoint",
TagEnumerationType: "EnumerationType",
TagFormalParameter: "FormalParameter",
TagImportedDeclaration: "ImportedDeclaration",
TagLabel: "Label",
TagLexDwarfBlock: "LexDwarfBlock",
TagMember: "Member",
TagPointerType: "PointerType",
TagReferenceType: "ReferenceType",
TagCompileUnit: "CompileUnit",
TagStringType: "StringType",
TagStructType: "StructType",
TagSubroutineType: "SubroutineType",
TagTypedef: "Typedef",
TagUnionType: "UnionType",
TagUnspecifiedParameters: "UnspecifiedParameters",
TagVariant: "Variant",
TagCommonDwarfBlock: "CommonDwarfBlock",
TagCommonInclusion: "CommonInclusion",
TagInheritance: "Inheritance",
TagInlinedSubroutine: "InlinedSubroutine",
TagModule: "Module",
TagPtrToMemberType: "PtrToMemberType",
TagSetType: "SetType",
TagSubrangeType: "SubrangeType",
TagWithStmt: "WithStmt",
TagAccessDeclaration: "AccessDeclaration",
TagBaseType: "BaseType",
TagCatchDwarfBlock: "CatchDwarfBlock",
TagConstType: "ConstType",
TagConstant: "Constant",
TagEnumerator: "Enumerator",
TagFileType: "FileType",
TagFriend: "Friend",
TagNamelist: "Namelist",
TagNamelistItem: "NamelistItem",
TagPackedType: "PackedType",
TagSubprogram: "Subprogram",
TagTemplateTypeParameter: "TemplateTypeParameter",
TagTemplateValueParameter: "TemplateValueParameter",
TagThrownType: "ThrownType",
TagTryDwarfBlock: "TryDwarfBlock",
TagVariantPart: "VariantPart",
TagVariable: "Variable",
TagVolatileType: "VolatileType",
TagDwarfProcedure: "DwarfProcedure",
TagRestrictType: "RestrictType",
TagInterfaceType: "InterfaceType",
TagNamespace: "Namespace",
TagImportedModule: "ImportedModule",
TagUnspecifiedType: "UnspecifiedType",
TagPartialUnit: "PartialUnit",
TagImportedUnit: "ImportedUnit",
TagMutableType: "MutableType",
TagCondition: "Condition",
TagSharedType: "SharedType",
TagTypeUnit: "TypeUnit",
TagRvalueReferenceType: "RvalueReferenceType",
TagTemplateAlias: "TemplateAlias",
}
func (t Tag) String() string {
if int(t) < len(tagNames) {
s := tagNames[t]
if s != "" {
return s
}
}
return strconv.Itoa(int(t))
}
func (t Tag) GoString() string {
if int(t) < len(tagNames) {
s := tagNames[t]
if s != "" {
return "dwarf.Tag" + s
}
}
return "dwarf.Tag(" + strconv.FormatInt(int64(t), 10) + ")"
}
// Location expression operators.
// The debug info encodes value locations like 8(R3)
// as a sequence of these op codes.
// This package does not implement full expressions;
// the opPlusUconst operator is expected by the type parser.
const (
opAddr = 0x03 /* 1 op, const addr */
opDeref = 0x06
opConst1u = 0x08 /* 1 op, 1 byte const */
opConst1s = 0x09 /* " signed */
opConst2u = 0x0A /* 1 op, 2 byte const */
opConst2s = 0x0B /* " signed */
opConst4u = 0x0C /* 1 op, 4 byte const */
opConst4s = 0x0D /* " signed */
opConst8u = 0x0E /* 1 op, 8 byte const */
opConst8s = 0x0F /* " signed */
opConstu = 0x10 /* 1 op, LEB128 const */
opConsts = 0x11 /* " signed */
opDup = 0x12
opDrop = 0x13
opOver = 0x14
opPick = 0x15 /* 1 op, 1 byte stack index */
opSwap = 0x16
opRot = 0x17
opXderef = 0x18
opAbs = 0x19
opAnd = 0x1A
opDiv = 0x1B
opMinus = 0x1C
opMod = 0x1D
opMul = 0x1E
opNeg = 0x1F
opNot = 0x20
opOr = 0x21
opPlus = 0x22
opPlusUconst = 0x23 /* 1 op, ULEB128 addend */
opShl = 0x24
opShr = 0x25
opShra = 0x26
opXor = 0x27
opSkip = 0x2F /* 1 op, signed 2-byte constant */
opBra = 0x28 /* 1 op, signed 2-byte constant */
opEq = 0x29
opGe = 0x2A
opGt = 0x2B
opLe = 0x2C
opLt = 0x2D
opNe = 0x2E
opLit0 = 0x30
/* OpLitN = OpLit0 + N for N = 0..31 */
opReg0 = 0x50
/* OpRegN = OpReg0 + N for N = 0..31 */
opBreg0 = 0x70 /* 1 op, signed LEB128 constant */
/* OpBregN = OpBreg0 + N for N = 0..31 */
opRegx = 0x90 /* 1 op, ULEB128 register */
opFbreg = 0x91 /* 1 op, SLEB128 offset */
opBregx = 0x92 /* 2 op, ULEB128 reg; SLEB128 off */
opPiece = 0x93 /* 1 op, ULEB128 size of piece */
opDerefSize = 0x94 /* 1-byte size of data retrieved */
opXderefSize = 0x95 /* 1-byte size of data retrieved */
opNop = 0x96
/* next four new in Dwarf v3 */
opPushObjAddr = 0x97
opCall2 = 0x98 /* 2-byte offset of DIE */
opCall4 = 0x99 /* 4-byte offset of DIE */
opCallRef = 0x9A /* 4- or 8- byte offset of DIE */
/* 0xE0-0xFF reserved for user-specific */
)
// Basic type encodings -- the value for AttrEncoding in a TagBaseType Entry.
const (
encAddress = 0x01
encBoolean = 0x02
encComplexFloat = 0x03
encFloat = 0x04
encSigned = 0x05
encSignedChar = 0x06
encUnsigned = 0x07
encUnsignedChar = 0x08
encImaginaryFloat = 0x09
)
// Statement program standard opcode encodings.
const (
lnsCopy = 1
lnsAdvancePC = 2
lnsAdvanceLine = 3
lnsSetFile = 4
lnsSetColumn = 5
lnsNegateStmt = 6
lnsSetBasicBlock = 7
lnsConstAddPC = 8
lnsFixedAdvancePC = 9
// DWARF 3
lnsSetPrologueEnd = 10
lnsSetEpilogueBegin = 11
lnsSetISA = 12
)
// Statement program extended opcode encodings.
const (
lneEndSequence = 1
lneSetAddress = 2
lneDefineFile = 3
// DWARF 4
lneSetDiscriminator = 4
)