mirror of
https://github.com/go-delve/delve.git
synced 2025-11-01 03:42:59 +08:00
f1e5a70a4b
I decided to vendor all debug/dwarf and debug/elf files so that the project can be go get-table. All changes that I am waiting to land in Go 1.4 are now captured in /vendor/debug/*.
455 lines
14 KiB
Go
455 lines
14 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Constants
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package dwarf
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import "strconv"
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// An Attr identifies the attribute type in a DWARF Entry's Field.
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type Attr uint32
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const (
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AttrSibling Attr = 0x01
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AttrLocation Attr = 0x02
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AttrName Attr = 0x03
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AttrOrdering Attr = 0x09
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AttrByteSize Attr = 0x0B
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AttrBitOffset Attr = 0x0C
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AttrBitSize Attr = 0x0D
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AttrStmtList Attr = 0x10
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AttrLowpc Attr = 0x11
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AttrHighpc Attr = 0x12
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AttrLanguage Attr = 0x13
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AttrDiscr Attr = 0x15
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AttrDiscrValue Attr = 0x16
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AttrVisibility Attr = 0x17
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AttrImport Attr = 0x18
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AttrStringLength Attr = 0x19
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AttrCommonRef Attr = 0x1A
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AttrCompDir Attr = 0x1B
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AttrConstValue Attr = 0x1C
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AttrContainingType Attr = 0x1D
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AttrDefaultValue Attr = 0x1E
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AttrInline Attr = 0x20
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AttrIsOptional Attr = 0x21
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AttrLowerBound Attr = 0x22
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AttrProducer Attr = 0x25
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AttrPrototyped Attr = 0x27
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AttrReturnAddr Attr = 0x2A
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AttrStartScope Attr = 0x2C
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AttrStrideSize Attr = 0x2E
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AttrUpperBound Attr = 0x2F
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AttrAbstractOrigin Attr = 0x31
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AttrAccessibility Attr = 0x32
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AttrAddrClass Attr = 0x33
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AttrArtificial Attr = 0x34
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AttrBaseTypes Attr = 0x35
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AttrCalling Attr = 0x36
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AttrCount Attr = 0x37
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AttrDataMemberLoc Attr = 0x38
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AttrDeclColumn Attr = 0x39
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AttrDeclFile Attr = 0x3A
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AttrDeclLine Attr = 0x3B
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AttrDeclaration Attr = 0x3C
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AttrDiscrList Attr = 0x3D
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AttrEncoding Attr = 0x3E
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AttrExternal Attr = 0x3F
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AttrFrameBase Attr = 0x40
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AttrFriend Attr = 0x41
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AttrIdentifierCase Attr = 0x42
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AttrMacroInfo Attr = 0x43
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AttrNamelistItem Attr = 0x44
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AttrPriority Attr = 0x45
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AttrSegment Attr = 0x46
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AttrSpecification Attr = 0x47
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AttrStaticLink Attr = 0x48
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AttrType Attr = 0x49
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AttrUseLocation Attr = 0x4A
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AttrVarParam Attr = 0x4B
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AttrVirtuality Attr = 0x4C
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AttrVtableElemLoc Attr = 0x4D
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AttrAllocated Attr = 0x4E
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AttrAssociated Attr = 0x4F
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AttrDataLocation Attr = 0x50
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AttrStride Attr = 0x51
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AttrEntrypc Attr = 0x52
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AttrUseUTF8 Attr = 0x53
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AttrExtension Attr = 0x54
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AttrRanges Attr = 0x55
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AttrTrampoline Attr = 0x56
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AttrCallColumn Attr = 0x57
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AttrCallFile Attr = 0x58
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AttrCallLine Attr = 0x59
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AttrDescription Attr = 0x5A
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)
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var attrNames = [...]string{
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AttrSibling: "Sibling",
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AttrLocation: "Location",
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AttrName: "Name",
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AttrOrdering: "Ordering",
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AttrByteSize: "ByteSize",
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AttrBitOffset: "BitOffset",
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AttrBitSize: "BitSize",
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AttrStmtList: "StmtList",
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AttrLowpc: "Lowpc",
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AttrHighpc: "Highpc",
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AttrLanguage: "Language",
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AttrDiscr: "Discr",
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AttrDiscrValue: "DiscrValue",
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AttrVisibility: "Visibility",
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AttrImport: "Import",
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AttrStringLength: "StringLength",
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AttrCommonRef: "CommonRef",
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AttrCompDir: "CompDir",
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AttrConstValue: "ConstValue",
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AttrContainingType: "ContainingType",
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AttrDefaultValue: "DefaultValue",
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AttrInline: "Inline",
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AttrIsOptional: "IsOptional",
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AttrLowerBound: "LowerBound",
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AttrProducer: "Producer",
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AttrPrototyped: "Prototyped",
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AttrReturnAddr: "ReturnAddr",
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AttrStartScope: "StartScope",
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AttrStrideSize: "StrideSize",
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AttrUpperBound: "UpperBound",
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AttrAbstractOrigin: "AbstractOrigin",
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AttrAccessibility: "Accessibility",
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AttrAddrClass: "AddrClass",
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AttrArtificial: "Artificial",
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AttrBaseTypes: "BaseTypes",
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AttrCalling: "Calling",
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AttrCount: "Count",
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AttrDataMemberLoc: "DataMemberLoc",
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AttrDeclColumn: "DeclColumn",
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AttrDeclFile: "DeclFile",
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AttrDeclLine: "DeclLine",
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AttrDeclaration: "Declaration",
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AttrDiscrList: "DiscrList",
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AttrEncoding: "Encoding",
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AttrExternal: "External",
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AttrFrameBase: "FrameBase",
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AttrFriend: "Friend",
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AttrIdentifierCase: "IdentifierCase",
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AttrMacroInfo: "MacroInfo",
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AttrNamelistItem: "NamelistItem",
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AttrPriority: "Priority",
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AttrSegment: "Segment",
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AttrSpecification: "Specification",
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AttrStaticLink: "StaticLink",
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AttrType: "Type",
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AttrUseLocation: "UseLocation",
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AttrVarParam: "VarParam",
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AttrVirtuality: "Virtuality",
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AttrVtableElemLoc: "VtableElemLoc",
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AttrAllocated: "Allocated",
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AttrAssociated: "Associated",
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AttrDataLocation: "DataLocation",
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AttrStride: "Stride",
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AttrEntrypc: "Entrypc",
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AttrUseUTF8: "UseUTF8",
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AttrExtension: "Extension",
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AttrRanges: "Ranges",
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AttrTrampoline: "Trampoline",
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AttrCallColumn: "CallColumn",
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AttrCallFile: "CallFile",
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AttrCallLine: "CallLine",
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AttrDescription: "Description",
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}
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func (a Attr) String() string {
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if int(a) < len(attrNames) {
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s := attrNames[a]
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if s != "" {
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return s
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}
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}
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return strconv.Itoa(int(a))
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}
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func (a Attr) GoString() string {
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if int(a) < len(attrNames) {
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s := attrNames[a]
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if s != "" {
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return "dwarf.Attr" + s
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}
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}
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return "dwarf.Attr(" + strconv.FormatInt(int64(a), 10) + ")"
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}
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// A format is a DWARF data encoding format.
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type format uint32
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const (
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// value formats
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formAddr format = 0x01
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formDwarfBlock2 format = 0x03
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formDwarfBlock4 format = 0x04
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formData2 format = 0x05
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formData4 format = 0x06
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formData8 format = 0x07
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formString format = 0x08
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formDwarfBlock format = 0x09
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formDwarfBlock1 format = 0x0A
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formData1 format = 0x0B
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formFlag format = 0x0C
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formSdata format = 0x0D
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formStrp format = 0x0E
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formUdata format = 0x0F
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formRefAddr format = 0x10
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formRef1 format = 0x11
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formRef2 format = 0x12
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formRef4 format = 0x13
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formRef8 format = 0x14
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formRefUdata format = 0x15
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formIndirect format = 0x16
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// The following are new in DWARF 4.
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formSecOffset format = 0x17
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formExprloc format = 0x18
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formFlagPresent format = 0x19
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formRefSig8 format = 0x20
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// Extensions for multi-file compression (.dwz)
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// http://www.dwarfstd.org/ShowIssue.php?issue=120604.1
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formGnuRefAlt format = 0x1f20
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formGnuStrpAlt format = 0x1f21
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)
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// A Tag is the classification (the type) of an Entry.
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type Tag uint32
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const (
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TagArrayType Tag = 0x01
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TagClassType Tag = 0x02
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TagEntryPoint Tag = 0x03
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TagEnumerationType Tag = 0x04
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TagFormalParameter Tag = 0x05
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TagImportedDeclaration Tag = 0x08
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TagLabel Tag = 0x0A
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TagLexDwarfBlock Tag = 0x0B
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TagMember Tag = 0x0D
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TagPointerType Tag = 0x0F
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TagReferenceType Tag = 0x10
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TagCompileUnit Tag = 0x11
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TagStringType Tag = 0x12
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TagStructType Tag = 0x13
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TagSubroutineType Tag = 0x15
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TagTypedef Tag = 0x16
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TagUnionType Tag = 0x17
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TagUnspecifiedParameters Tag = 0x18
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TagVariant Tag = 0x19
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TagCommonDwarfBlock Tag = 0x1A
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TagCommonInclusion Tag = 0x1B
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TagInheritance Tag = 0x1C
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TagInlinedSubroutine Tag = 0x1D
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TagModule Tag = 0x1E
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TagPtrToMemberType Tag = 0x1F
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TagSetType Tag = 0x20
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TagSubrangeType Tag = 0x21
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TagWithStmt Tag = 0x22
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TagAccessDeclaration Tag = 0x23
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TagBaseType Tag = 0x24
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TagCatchDwarfBlock Tag = 0x25
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TagConstType Tag = 0x26
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TagConstant Tag = 0x27
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TagEnumerator Tag = 0x28
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TagFileType Tag = 0x29
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TagFriend Tag = 0x2A
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TagNamelist Tag = 0x2B
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TagNamelistItem Tag = 0x2C
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TagPackedType Tag = 0x2D
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TagSubprogram Tag = 0x2E
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TagTemplateTypeParameter Tag = 0x2F
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TagTemplateValueParameter Tag = 0x30
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TagThrownType Tag = 0x31
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TagTryDwarfBlock Tag = 0x32
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TagVariantPart Tag = 0x33
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TagVariable Tag = 0x34
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TagVolatileType Tag = 0x35
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// The following are new in DWARF 3.
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TagDwarfProcedure Tag = 0x36
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TagRestrictType Tag = 0x37
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TagInterfaceType Tag = 0x38
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TagNamespace Tag = 0x39
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TagImportedModule Tag = 0x3A
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TagUnspecifiedType Tag = 0x3B
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TagPartialUnit Tag = 0x3C
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TagImportedUnit Tag = 0x3D
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TagMutableType Tag = 0x3E // Later removed from DWARF.
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TagCondition Tag = 0x3F
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TagSharedType Tag = 0x40
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// The following are new in DWARF 4.
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TagTypeUnit Tag = 0x41
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TagRvalueReferenceType Tag = 0x42
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TagTemplateAlias Tag = 0x43
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)
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var tagNames = [...]string{
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TagArrayType: "ArrayType",
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TagClassType: "ClassType",
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TagEntryPoint: "EntryPoint",
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TagEnumerationType: "EnumerationType",
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TagFormalParameter: "FormalParameter",
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TagImportedDeclaration: "ImportedDeclaration",
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TagLabel: "Label",
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TagLexDwarfBlock: "LexDwarfBlock",
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TagMember: "Member",
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TagPointerType: "PointerType",
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TagReferenceType: "ReferenceType",
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TagCompileUnit: "CompileUnit",
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TagStringType: "StringType",
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TagStructType: "StructType",
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TagSubroutineType: "SubroutineType",
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TagTypedef: "Typedef",
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TagUnionType: "UnionType",
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TagUnspecifiedParameters: "UnspecifiedParameters",
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TagVariant: "Variant",
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TagCommonDwarfBlock: "CommonDwarfBlock",
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TagCommonInclusion: "CommonInclusion",
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TagInheritance: "Inheritance",
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TagInlinedSubroutine: "InlinedSubroutine",
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TagModule: "Module",
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TagPtrToMemberType: "PtrToMemberType",
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TagSetType: "SetType",
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TagSubrangeType: "SubrangeType",
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TagWithStmt: "WithStmt",
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TagAccessDeclaration: "AccessDeclaration",
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TagBaseType: "BaseType",
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TagCatchDwarfBlock: "CatchDwarfBlock",
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TagConstType: "ConstType",
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TagConstant: "Constant",
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TagEnumerator: "Enumerator",
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TagFileType: "FileType",
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TagFriend: "Friend",
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TagNamelist: "Namelist",
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TagNamelistItem: "NamelistItem",
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TagPackedType: "PackedType",
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TagSubprogram: "Subprogram",
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TagTemplateTypeParameter: "TemplateTypeParameter",
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TagTemplateValueParameter: "TemplateValueParameter",
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TagThrownType: "ThrownType",
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TagTryDwarfBlock: "TryDwarfBlock",
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TagVariantPart: "VariantPart",
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TagVariable: "Variable",
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TagVolatileType: "VolatileType",
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TagDwarfProcedure: "DwarfProcedure",
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TagRestrictType: "RestrictType",
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TagInterfaceType: "InterfaceType",
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TagNamespace: "Namespace",
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TagImportedModule: "ImportedModule",
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TagUnspecifiedType: "UnspecifiedType",
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TagPartialUnit: "PartialUnit",
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TagImportedUnit: "ImportedUnit",
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TagMutableType: "MutableType",
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TagCondition: "Condition",
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TagSharedType: "SharedType",
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TagTypeUnit: "TypeUnit",
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TagRvalueReferenceType: "RvalueReferenceType",
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TagTemplateAlias: "TemplateAlias",
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}
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func (t Tag) String() string {
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if int(t) < len(tagNames) {
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s := tagNames[t]
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if s != "" {
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return s
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}
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}
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return strconv.Itoa(int(t))
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}
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func (t Tag) GoString() string {
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if int(t) < len(tagNames) {
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s := tagNames[t]
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if s != "" {
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return "dwarf.Tag" + s
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}
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}
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return "dwarf.Tag(" + strconv.FormatInt(int64(t), 10) + ")"
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}
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// Location expression operators.
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// The debug info encodes value locations like 8(R3)
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// as a sequence of these op codes.
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// This package does not implement full expressions;
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// the opPlusUconst operator is expected by the type parser.
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const (
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opAddr = 0x03 /* 1 op, const addr */
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opDeref = 0x06
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opConst1u = 0x08 /* 1 op, 1 byte const */
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opConst1s = 0x09 /* " signed */
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opConst2u = 0x0A /* 1 op, 2 byte const */
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opConst2s = 0x0B /* " signed */
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opConst4u = 0x0C /* 1 op, 4 byte const */
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opConst4s = 0x0D /* " signed */
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opConst8u = 0x0E /* 1 op, 8 byte const */
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opConst8s = 0x0F /* " signed */
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opConstu = 0x10 /* 1 op, LEB128 const */
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opConsts = 0x11 /* " signed */
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opDup = 0x12
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opDrop = 0x13
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opOver = 0x14
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opPick = 0x15 /* 1 op, 1 byte stack index */
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opSwap = 0x16
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opRot = 0x17
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opXderef = 0x18
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opAbs = 0x19
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opAnd = 0x1A
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opDiv = 0x1B
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opMinus = 0x1C
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opMod = 0x1D
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opMul = 0x1E
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opNeg = 0x1F
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opNot = 0x20
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opOr = 0x21
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opPlus = 0x22
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opPlusUconst = 0x23 /* 1 op, ULEB128 addend */
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opShl = 0x24
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opShr = 0x25
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opShra = 0x26
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opXor = 0x27
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opSkip = 0x2F /* 1 op, signed 2-byte constant */
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opBra = 0x28 /* 1 op, signed 2-byte constant */
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opEq = 0x29
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opGe = 0x2A
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opGt = 0x2B
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opLe = 0x2C
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opLt = 0x2D
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opNe = 0x2E
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opLit0 = 0x30
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/* OpLitN = OpLit0 + N for N = 0..31 */
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opReg0 = 0x50
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/* OpRegN = OpReg0 + N for N = 0..31 */
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opBreg0 = 0x70 /* 1 op, signed LEB128 constant */
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/* OpBregN = OpBreg0 + N for N = 0..31 */
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opRegx = 0x90 /* 1 op, ULEB128 register */
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opFbreg = 0x91 /* 1 op, SLEB128 offset */
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opBregx = 0x92 /* 2 op, ULEB128 reg; SLEB128 off */
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opPiece = 0x93 /* 1 op, ULEB128 size of piece */
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opDerefSize = 0x94 /* 1-byte size of data retrieved */
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opXderefSize = 0x95 /* 1-byte size of data retrieved */
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opNop = 0x96
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/* next four new in Dwarf v3 */
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opPushObjAddr = 0x97
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opCall2 = 0x98 /* 2-byte offset of DIE */
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opCall4 = 0x99 /* 4-byte offset of DIE */
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opCallRef = 0x9A /* 4- or 8- byte offset of DIE */
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/* 0xE0-0xFF reserved for user-specific */
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)
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// Basic type encodings -- the value for AttrEncoding in a TagBaseType Entry.
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const (
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encAddress = 0x01
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encBoolean = 0x02
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encComplexFloat = 0x03
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encFloat = 0x04
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encSigned = 0x05
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encSignedChar = 0x06
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encUnsigned = 0x07
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encUnsignedChar = 0x08
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encImaginaryFloat = 0x09
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)
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