Documentation ¶
Overview ¶
Package proc is a low-level package that provides methods to manipulate the process we are debugging.
proc implements all core functionality including: * creating / attaching to a process * process manipulation (step, next, continue, halt) * methods to explore the memory of the process
Index ¶
- Constants
- Variables
- func DisableAsyncPreemptEnv() []string
- func EvalExpressionWithCalls(t *Target, g *G, expr string, retLoadCfg LoadConfig, checkEscape bool) error
- func FindDeferReturnCalls(text []AsmInstruction) []uint64
- func FindFileLocation(p Process, fileName string, lineno int) ([]uint64, error)
- func FindFunctionLocation(p Process, funcName string, lineOffset int) ([]uint64, error)
- func FirstPCAfterPrologue(p Process, fn *Function, sameline bool) (uint64, error)
- type Ancestor
- type Arch
- type AsmInstruction
- type AsmInstructionKind
- type AssemblyFlavour
- type BinaryInfo
- func (bi *BinaryInfo) AddImage(path string, addr uint64) error
- func (bi *BinaryInfo) AllPCsForFileLines(filename string, linenos []int) map[int][]uint64
- func (bi *BinaryInfo) Close() error
- func (bi *BinaryInfo) GStructOffset() uint64
- func (bi *BinaryInfo) LastModified() time.Time
- func (bi *BinaryInfo) LineToPC(filename string, lineno int) (pcs []uint64, err error)
- func (bi *BinaryInfo) ListPackagesBuildInfo(includeFiles bool) []*PackageBuildInfo
- func (bi *BinaryInfo) LoadBinaryInfo(path string, entryPoint uint64, debugInfoDirs []string) error
- func (bi *BinaryInfo) LoadImageFromData(dwdata *dwarf.Data, debugFrameBytes, debugLineBytes, debugLocBytes []byte)
- func (bi *BinaryInfo) Location(entry godwarf.Entry, attr dwarf.Attr, pc uint64, regs op.DwarfRegisters) (int64, []op.Piece, *locationExpr, error)
- func (bi *BinaryInfo) LocationCovers(entry *dwarf.Entry, attr dwarf.Attr) ([][2]uint64, error)
- func (bi *BinaryInfo) PCToFunc(pc uint64) *Function
- func (bi *BinaryInfo) PCToImage(pc uint64) *Image
- func (bi *BinaryInfo) PCToInlineFunc(pc uint64) *Function
- func (bi *BinaryInfo) PCToLine(pc uint64) (string, int, *Function)
- func (bi *BinaryInfo) Producer() string
- func (bi *BinaryInfo) Types() ([]string, error)
- type Breakpoint
- type BreakpointExistsError
- type BreakpointKind
- type BreakpointManipulation
- type BreakpointMap
- func (bpmap *BreakpointMap) Clear(addr uint64, clearBreakpoint clearBreakpointFn) (*Breakpoint, error)
- func (bpmap *BreakpointMap) ClearInternalBreakpoints(clearBreakpoint clearBreakpointFn) error
- func (bpmap *BreakpointMap) HasInternalBreakpoints() bool
- func (bpmap *BreakpointMap) ResetBreakpointIDCounter()
- func (bpmap *BreakpointMap) Set(addr uint64, kind BreakpointKind, cond ast.Expr, ...) (*Breakpoint, error)
- func (bpmap *BreakpointMap) SetWithID(id int, addr uint64, writeBreakpoint WriteBreakpointFn) (*Breakpoint, error)
- type BreakpointState
- type Checkpoint
- type CommonThread
- type CpuArch
- type Defer
- type Direction
- type ElfDynamicSection
- type ErrCouldNotFindLine
- type ErrFunctionNotFound
- type ErrNoBuildIDNote
- type ErrNoGoroutine
- type ErrNoSourceForPC
- type ErrProcessExited
- type ErrThreadBlocked
- type ErrUnsupportedArch
- type EvalScope
- func (scope *EvalScope) DwarfReader() *reader.Reader
- func (scope *EvalScope) EvalExpression(expr string, cfg LoadConfig) (*Variable, error)
- func (scope *EvalScope) EvalVariable(name string, cfg LoadConfig) (*Variable, error)
- func (scope *EvalScope) FunctionArguments(cfg LoadConfig) ([]*Variable, error)
- func (scope *EvalScope) LocalVariables(cfg LoadConfig) ([]*Variable, error)
- func (scope *EvalScope) Locals() ([]*Variable, error)
- func (scope *EvalScope) PackageVariables(cfg LoadConfig) ([]*Variable, error)
- func (scope *EvalScope) PtrSize() int
- func (scope *EvalScope) SetVariable(name, value string) error
- type Function
- type G
- type Image
- type Info
- type InlinedCall
- type InvalidAddressError
- type IsNilErr
- type LoadConfig
- type Location
- type MemoryReadWriter
- type MemoryReader
- type NewTargetConfig
- type NoBreakpointError
- type NullAddrError
- type PEMachine
- type PackageBuildInfo
- type Process
- type ProcessInternal
- type ProcessManipulation
- type RecordingManipulation
- type Register
- type Registers
- type Stackframe
- type StacktraceOptions
- type StopReason
- type Target
- func (t *Target) ClearAllGCache()
- func (dbp *Target) Continue() error
- func (t *Target) Detach(kill bool) error
- func (dbp *Target) Next() (err error)
- func (t *Target) Restart(from string) error
- func (t *Target) SelectedGoroutine() *G
- func (dbp *Target) Step() (err error)
- func (dbp *Target) StepInstruction() (err error)
- func (dbp *Target) StepOut() error
- func (t *Target) SupportsFunctionCalls() bool
- func (p *Target) SwitchGoroutine(g *G) error
- func (p *Target) SwitchThread(tid int) error
- type Thread
- type ThreadInfo
- type Variable
- type WriteBreakpointFn
Constants ¶
const ( // UnrecoveredPanic is the name given to the unrecovered panic breakpoint. UnrecoveredPanic = "unrecovered-panic" // FatalThrow is the name given to the breakpoint triggered when the target // process dies because of a fatal runtime error. FatalThrow = "runtime-fatal-throw" )
const ( // GNUFlavour will display GNU assembly syntax. GNUFlavour = AssemblyFlavour(iota) // IntelFlavour will display Intel assembly syntax. IntelFlavour // GoFlavour will display Go assembly syntax. GoFlavour )
const ( IMAGE_FILE_MACHINE_UNKNOWN = 0x0 IMAGE_FILE_MACHINE_AM33 = 0x1d3 IMAGE_FILE_MACHINE_AMD64 = 0x8664 IMAGE_FILE_MACHINE_ARM = 0x1c0 IMAGE_FILE_MACHINE_ARMNT = 0x1c4 IMAGE_FILE_MACHINE_ARM64 = 0xaa64 IMAGE_FILE_MACHINE_EBC = 0xebc IMAGE_FILE_MACHINE_I386 = 0x14c IMAGE_FILE_MACHINE_IA64 = 0x200 IMAGE_FILE_MACHINE_M32R = 0x9041 IMAGE_FILE_MACHINE_MIPS16 = 0x266 IMAGE_FILE_MACHINE_MIPSFPU = 0x366 IMAGE_FILE_MACHINE_MIPSFPU16 = 0x466 IMAGE_FILE_MACHINE_POWERPC = 0x1f0 IMAGE_FILE_MACHINE_POWERPCFP = 0x1f1 IMAGE_FILE_MACHINE_R4000 = 0x166 IMAGE_FILE_MACHINE_SH3 = 0x1a2 IMAGE_FILE_MACHINE_SH3DSP = 0x1a3 IMAGE_FILE_MACHINE_SH4 = 0x1a6 IMAGE_FILE_MACHINE_SH5 = 0x1a8 IMAGE_FILE_MACHINE_THUMB = 0x1c2 IMAGE_FILE_MACHINE_WCEMIPSV2 = 0x169 )
const ( // FloatIsNormal means the value is a normal float. FloatIsNormal floatSpecial = iota // FloatIsNaN means the float is a special NaN value. FloatIsNaN // FloatIsPosInf means the float is a special positive inifitiy value. FloatIsPosInf // FloatIsNegInf means the float is a special negative infinity value. FloatIsNegInf )
const ( // VariableEscaped is set for local variables that escaped to the heap // // The compiler performs escape analysis on local variables, the variables // that may outlive the stack frame are allocated on the heap instead and // only the address is recorded on the stack. These variables will be // marked with this flag. VariableEscaped variableFlags = (1 << iota) // VariableShadowed is set for local variables that are shadowed by a // variable with the same name in another scope VariableShadowed // VariableConstant means this variable is a constant value VariableConstant // VariableArgument means this variable is a function argument VariableArgument // VariableReturnArgument means this variable is a function return value VariableReturnArgument // VariableFakeAddress means the address of this variable is either fake // (i.e. the variable is partially or completely stored in a CPU register // and doesn't have a real address) or possibly no longer availabe (because // the variable is the return value of a function call and allocated on a // frame that no longer exists) VariableFakeAddress )
const ( Gidle uint64 = iota // 0 Grunnable // 1 runnable and on a run queue Grunning // 2 Gsyscall // 3 Gwaiting // 4 GmoribundUnused // 5 currently unused, but hardcoded in gdb scripts Gdead // 6 Genqueue // 7 Only the Gscanenqueue is used. Gcopystack // 8 in this state when newstack is moving the stack )
G status, from: src/runtime/runtime2.go
const STT_FUNC = 2
STT_FUNC is a code object, see /usr/include/elf.h for a full definition.
Variables ¶
var ( // ErrCouldNotDetermineRelocation is an error returned when Delve could not determine the base address of a // position independant executable. ErrCouldNotDetermineRelocation = errors.New("could not determine the base address of a PIE") // ErrNoDebugInfoFound is returned when Delve cannot open the debug_info // section or find an external debug info file. ErrNoDebugInfoFound = errors.New("could not open debug info") )
var ( // ErrNotRecorded is returned when an action is requested that is // only possible on recorded (traced) programs. ErrNotRecorded = errors.New("not a recording") // ErrNoRuntimeAllG is returned when the runtime.allg list could // not be found. ErrNoRuntimeAllG = errors.New("could not find goroutine array") // ErrProcessDetached indicates that we detached from the target process. ErrProcessDetached = errors.New("detached from the process") )
var ErrUnknownRegister = errors.New("unknown register")
ErrUnknownRegister is returned when the value of an unknown register is requested.
var ErrUnreadableG = errors.New("could not read G struct")
var PEMachineString = map[uint16]string{ IMAGE_FILE_MACHINE_UNKNOWN: "unknown", IMAGE_FILE_MACHINE_AM33: "am33", IMAGE_FILE_MACHINE_AMD64: "amd64", IMAGE_FILE_MACHINE_ARM: "arm", IMAGE_FILE_MACHINE_ARMNT: "armnt", IMAGE_FILE_MACHINE_ARM64: "arm64", IMAGE_FILE_MACHINE_EBC: "ebc", IMAGE_FILE_MACHINE_I386: "i386", IMAGE_FILE_MACHINE_IA64: "ia64", IMAGE_FILE_MACHINE_M32R: "m32r", IMAGE_FILE_MACHINE_MIPS16: "mips16", IMAGE_FILE_MACHINE_MIPSFPU: "mipsfpu", IMAGE_FILE_MACHINE_MIPSFPU16: "mipsfpu16", IMAGE_FILE_MACHINE_POWERPC: "powerpc", IMAGE_FILE_MACHINE_POWERPCFP: "powerpcfp", IMAGE_FILE_MACHINE_R4000: "r4000", IMAGE_FILE_MACHINE_SH3: "sh3", IMAGE_FILE_MACHINE_SH3DSP: "sh3dsp", IMAGE_FILE_MACHINE_SH4: "sh4", IMAGE_FILE_MACHINE_SH5: "sh5", IMAGE_FILE_MACHINE_THUMB: "thumb", IMAGE_FILE_MACHINE_WCEMIPSV2: "wcemipsv2", }
PEMachineString map pe machine to name, See $GOROOT/src/debug/pe/pe.go for detail
Functions ¶
func DisableAsyncPreemptEnv ¶
func DisableAsyncPreemptEnv() []string
DisableAsyncPreemptEnv returns a process environment (like os.Environ) where asyncpreemptoff is set to 1.
func EvalExpressionWithCalls ¶
func EvalExpressionWithCalls(t *Target, g *G, expr string, retLoadCfg LoadConfig, checkEscape bool) error
EvalExpressionWithCalls is like EvalExpression but allows function calls in 'expr'. Because this can only be done in the current goroutine, unlike EvalExpression, EvalExpressionWithCalls is not a method of EvalScope.
func FindDeferReturnCalls ¶
func FindDeferReturnCalls(text []AsmInstruction) []uint64
func FindFileLocation ¶
FindFileLocation returns the PC for a given file:line. Assumes that `file` is normalized to lower case and '/' on Windows.
func FindFunctionLocation ¶
FindFunctionLocation finds address of a function's line If lineOffset is passed FindFunctionLocation will return the address of that line
func FirstPCAfterPrologue ¶
FirstPCAfterPrologue returns the address of the first instruction after the prologue for function fn. If sameline is set FirstPCAfterPrologue will always return an address associated with the same line as fn.Entry.
Types ¶
type Ancestor ¶
type Ancestor struct { ID int64 // Goroutine ID Unreadable error // contains filtered or unexported fields }
type Arch ¶
type Arch struct { Name string // architecture name // RegistersToDwarfRegisters maps hardware registers to DWARF registers. RegistersToDwarfRegisters func(uint64, Registers) op.DwarfRegisters // DwarfRegisterToString returns the name and value representation of the given register. DwarfRegisterToString func(int, *op.DwarfRegister) (string, bool, string) // contains filtered or unexported fields }
Arch represents a CPU architecture.
func (*Arch) BreakInstrMovesPC ¶
BreakInstrMovesPC is true if hitting the breakpoint instruction advances the instruction counter by the size of the breakpoint instruction.
func (*Arch) BreakpointInstruction ¶
BreakpointInstruction is the instruction that will trigger a breakpoint trap for the given architecture.
func (*Arch) BreakpointSize ¶
BreakpointSize is the size of the breakpoint instruction for the given architecture.
func (*Arch) DerefTLS ¶
DerefTLS is true if the G struct stored in the TLS section is a pointer and the address must be dereferenced to find to actual G struct.
func (*Arch) MaxInstructionLength ¶
MaxInstructionLength is the maximum size in bytes of an instruction.
type AsmInstruction ¶
type AsmInstruction struct { Loc Location DestLoc *Location Bytes []byte Breakpoint bool AtPC bool Size int Kind AsmInstructionKind Inst archInst }
AsmInstruction represents one assembly instruction.
func Disassemble ¶
func Disassemble(mem MemoryReadWriter, regs Registers, breakpoints *BreakpointMap, bi *BinaryInfo, startAddr, endAddr uint64) ([]AsmInstruction, error)
Disassemble disassembles target memory between startAddr and endAddr, marking the current instruction being executed in goroutine g. If currentGoroutine is set and thread is stopped at a CALL instruction Disassemble will evaluate the argument of the CALL instruction using the thread's registers. Be aware that the Bytes field of each returned instruction is a slice of a larger array of size startAddr - endAddr.
func (*AsmInstruction) IsCall ¶
func (instr *AsmInstruction) IsCall() bool
IsCall is true if instr is a call instruction.
func (*AsmInstruction) IsJmp ¶
func (instr *AsmInstruction) IsJmp() bool
IsJmp is true if instr is an unconditional jump instruction.
func (*AsmInstruction) IsRet ¶
func (instr *AsmInstruction) IsRet() bool
IsRet is true if instr is a return instruction.
func (*AsmInstruction) Text ¶
func (inst *AsmInstruction) Text(flavour AssemblyFlavour, bi *BinaryInfo) string
Text will return the assembly instructions in human readable format according to the flavour specified.
type AsmInstructionKind ¶
type AsmInstructionKind uint8
const ( OtherInstruction AsmInstructionKind = iota CallInstruction RetInstruction JmpInstruction )
type BinaryInfo ¶
type BinaryInfo struct { // Architecture of this binary. Arch *Arch // GOOS operating system this binary is executing on. GOOS string // Functions is a list of all DW_TAG_subprogram entries in debug_info, sorted by entry point Functions []Function // Sources is a list of all source files found in debug_line. Sources []string // LookupFunc maps function names to a description of the function. LookupFunc map[string]*Function // SymNames maps addr to a description *elf.Symbol of this addr. SymNames map[uint64]*elf.Symbol // Images is a list of loaded shared libraries (also known as // shared objects on linux or DLLs on windows). Images []*Image ElfDynamicSection ElfDynamicSection // PackageMap maps package names to package paths, needed to lookup types inside DWARF info. // On Go1.12 this mapping is determined by using the last element of a package path, for example: // github.com/go-delve/delve // will map to 'delve' because it ends in '/delve'. // Starting with Go1.13 debug_info will contain a special attribute // (godwarf.AttrGoPackageName) containing the canonical package name for // each package. // If multiple packages have the same name the map entry will have more // than one item in the slice. PackageMap map[string][]string // contains filtered or unexported fields }
BinaryInfo holds information on the binaries being executed (this includes both the executable and also any loaded libraries).
func NewBinaryInfo ¶
func NewBinaryInfo(goos, goarch string) *BinaryInfo
NewBinaryInfo returns an initialized but unloaded BinaryInfo struct.
func (*BinaryInfo) AddImage ¶
func (bi *BinaryInfo) AddImage(path string, addr uint64) error
AddImage adds the specified image to bi, loading data asynchronously. Addr is the relocated entry point for the executable and staticBase (i.e. the relocation offset) for all other images. The first image added must be the executable file.
func (*BinaryInfo) AllPCsForFileLines ¶
func (bi *BinaryInfo) AllPCsForFileLines(filename string, linenos []int) map[int][]uint64
AllPCsForFileLines returns a map providing all PC addresses for filename and each line in linenos
func (*BinaryInfo) GStructOffset ¶
func (bi *BinaryInfo) GStructOffset() uint64
GStructOffset returns the offset of the G struct in thread local storage.
func (*BinaryInfo) LastModified ¶
func (bi *BinaryInfo) LastModified() time.Time
LastModified returns the last modified time of the binary.
func (*BinaryInfo) LineToPC ¶
func (bi *BinaryInfo) LineToPC(filename string, lineno int) (pcs []uint64, err error)
LineToPC converts a file:line into a list of matching memory addresses, corresponding to the first instruction matching the specified file:line in the containing function and all its inlined calls.
func (*BinaryInfo) ListPackagesBuildInfo ¶
func (bi *BinaryInfo) ListPackagesBuildInfo(includeFiles bool) []*PackageBuildInfo
ListPackagesBuildInfo returns the list of packages used by the program along with the directory where each package was compiled and optionally the list of files constituting the package.
func (*BinaryInfo) LoadBinaryInfo ¶
func (bi *BinaryInfo) LoadBinaryInfo(path string, entryPoint uint64, debugInfoDirs []string) error
LoadBinaryInfo will load and store the information from the binary at 'path'.
func (*BinaryInfo) LoadImageFromData ¶
func (bi *BinaryInfo) LoadImageFromData(dwdata *dwarf.Data, debugFrameBytes, debugLineBytes, debugLocBytes []byte)
LoadImageFromData creates a new Image, using the specified data, and adds it to bi. This is used for debugging BinaryInfo, you should use LoadBinary instead.
func (*BinaryInfo) Location ¶
func (bi *BinaryInfo) Location(entry godwarf.Entry, attr dwarf.Attr, pc uint64, regs op.DwarfRegisters) (int64, []op.Piece, *locationExpr, error)
Location returns the location described by attribute attr of entry. This will either be an int64 address or a slice of Pieces for locations that don't correspond to a single memory address (registers, composite locations).
func (*BinaryInfo) LocationCovers ¶
LocationCovers returns the list of PC addresses that is covered by the location attribute 'attr' of entry 'entry'.
func (*BinaryInfo) PCToFunc ¶
func (bi *BinaryInfo) PCToFunc(pc uint64) *Function
PCToFunc returns the concrete function containing the given PC address. If the PC address belongs to an inlined call it will return the containing function.
func (*BinaryInfo) PCToImage ¶
func (bi *BinaryInfo) PCToImage(pc uint64) *Image
PCToImage returns the image containing the given PC address.
func (*BinaryInfo) PCToInlineFunc ¶
func (bi *BinaryInfo) PCToInlineFunc(pc uint64) *Function
PCToInlineFunc returns the function containing the given PC address. If the PC address belongs to an inlined call it will return the inlined function.
func (*BinaryInfo) PCToLine ¶
func (bi *BinaryInfo) PCToLine(pc uint64) (string, int, *Function)
PCToLine converts an instruction address to a file/line/function.
func (*BinaryInfo) Producer ¶
func (bi *BinaryInfo) Producer() string
Producer returns the value of DW_AT_producer.
func (*BinaryInfo) Types ¶
func (bi *BinaryInfo) Types() ([]string, error)
Types returns list of types present in the debugged program.
type Breakpoint ¶
type Breakpoint struct { // File & line information for printing. FunctionName string File string Line int Addr uint64 // Address breakpoint is set for. OriginalData []byte // If software breakpoint, the data we replace with breakpoint instruction. Name string // User defined name of the breakpoint LogicalID int // ID of the logical breakpoint that owns this physical breakpoint // Kind describes whether this is an internal breakpoint (for next'ing or // stepping). // A single breakpoint can be both a UserBreakpoint and some kind of // internal breakpoint, but it can not be two different kinds of internal // breakpoint. Kind BreakpointKind // Breakpoint information Tracepoint bool // Tracepoint flag TraceReturn bool Goroutine bool // Retrieve goroutine information Stacktrace int // Number of stack frames to retrieve Variables []string // Variables to evaluate LoadArgs *LoadConfig LoadLocals *LoadConfig HitCount map[int]uint64 // Number of times a breakpoint has been reached in a certain goroutine TotalHitCount uint64 // Number of times a breakpoint has been reached // DeferReturns: when kind == NextDeferBreakpoint this breakpoint // will also check if the caller is runtime.gopanic or if the return // address is in the DeferReturns array. // Next uses NextDeferBreakpoints for the breakpoint it sets on the // deferred function, DeferReturns is populated with the // addresses of calls to runtime.deferreturn in the current // function. This ensures that the breakpoint on the deferred // function only triggers on panic or on the defer call to // the function, not when the function is called directly DeferReturns []uint64 // Cond: if not nil the breakpoint will be triggered only if evaluating Cond returns true Cond ast.Expr // contains filtered or unexported fields }
Breakpoint represents a physical breakpoint. Stores information on the break point including the byte of data that originally was stored at that address.
func (*Breakpoint) CheckCondition ¶
func (bp *Breakpoint) CheckCondition(thread Thread) BreakpointState
CheckCondition evaluates bp's condition on thread.
func (*Breakpoint) IsInternal ¶
func (bp *Breakpoint) IsInternal() bool
IsInternal returns true if bp is an internal breakpoint. User-set breakpoints can overlap with internal breakpoints, in that case both IsUser and IsInternal will be true.
func (*Breakpoint) IsUser ¶
func (bp *Breakpoint) IsUser() bool
IsUser returns true if bp is a user-set breakpoint. User-set breakpoints can overlap with internal breakpoints, in that case both IsUser and IsInternal will be true.
func (*Breakpoint) String ¶
func (bp *Breakpoint) String() string
type BreakpointExistsError ¶
BreakpointExistsError is returned when trying to set a breakpoint at an address that already has a breakpoint set for it.
func (BreakpointExistsError) Error ¶
func (bpe BreakpointExistsError) Error() string
type BreakpointKind ¶
type BreakpointKind uint16
BreakpointKind determines the behavior of delve when the breakpoint is reached.
const ( // UserBreakpoint is a user set breakpoint UserBreakpoint BreakpointKind = (1 << iota) // NextBreakpoint is a breakpoint set by Next, Continue // will stop on it and delete it NextBreakpoint // NextDeferBreakpoint is a breakpoint set by Next on the // first deferred function. In addition to checking their condition // breakpoints of this kind will also check that the function has been // called by runtime.gopanic or through runtime.deferreturn. NextDeferBreakpoint // StepBreakpoint is a breakpoint set by Step on a CALL instruction, // Continue will set a new breakpoint (of NextBreakpoint kind) on the // destination of CALL, delete this breakpoint and then continue again StepBreakpoint )
type BreakpointManipulation ¶
type BreakpointManipulation interface { Breakpoints() *BreakpointMap SetBreakpoint(addr uint64, kind BreakpointKind, cond ast.Expr) (*Breakpoint, error) ClearBreakpoint(addr uint64) (*Breakpoint, error) ClearInternalBreakpoints() error }
BreakpointManipulation is an interface for managing breakpoints.
type BreakpointMap ¶
type BreakpointMap struct { M map[uint64]*Breakpoint // contains filtered or unexported fields }
BreakpointMap represents an (address, breakpoint) map.
func NewBreakpointMap ¶
func NewBreakpointMap() BreakpointMap
NewBreakpointMap creates a new BreakpointMap.
func (*BreakpointMap) Clear ¶
func (bpmap *BreakpointMap) Clear(addr uint64, clearBreakpoint clearBreakpointFn) (*Breakpoint, error)
Clear clears the breakpoint at addr. Do not call this function call proc.Process.ClearBreakpoint instead.
func (*BreakpointMap) ClearInternalBreakpoints ¶
func (bpmap *BreakpointMap) ClearInternalBreakpoints(clearBreakpoint clearBreakpointFn) error
ClearInternalBreakpoints removes all internal breakpoints from the map, calling clearBreakpoint on each one. Do not call this function, call proc.Process.ClearInternalBreakpoints instead, this function is used to implement that.
func (*BreakpointMap) HasInternalBreakpoints ¶
func (bpmap *BreakpointMap) HasInternalBreakpoints() bool
HasInternalBreakpoints returns true if bpmap has at least one internal breakpoint set.
func (*BreakpointMap) ResetBreakpointIDCounter ¶
func (bpmap *BreakpointMap) ResetBreakpointIDCounter()
ResetBreakpointIDCounter resets the breakpoint ID counter of bpmap.
func (*BreakpointMap) Set ¶
func (bpmap *BreakpointMap) Set(addr uint64, kind BreakpointKind, cond ast.Expr, writeBreakpoint WriteBreakpointFn) (*Breakpoint, error)
Set creates a breakpoint at addr calling writeBreakpoint. Do not call this function, call proc.Process.SetBreakpoint instead, this function exists to implement proc.Process.SetBreakpoint.
func (*BreakpointMap) SetWithID ¶
func (bpmap *BreakpointMap) SetWithID(id int, addr uint64, writeBreakpoint WriteBreakpointFn) (*Breakpoint, error)
SetWithID creates a breakpoint at addr, with the specified logical ID.
type BreakpointState ¶
type BreakpointState struct { *Breakpoint // Active is true if the breakpoint condition was met. Active bool // Internal is true if the breakpoint was matched as an internal // breakpoint. Internal bool // CondError contains any error encountered while evaluating the // breakpoint's condition. CondError error }
BreakpointState describes the state of a breakpoint in a thread.
func (*BreakpointState) String ¶
func (bpstate *BreakpointState) String() string
type Checkpoint ¶
Checkpoint is a checkpoint
type CommonThread ¶
type CommonThread struct {
// contains filtered or unexported fields
}
CommonThread contains fields used by this package, common to all implementations of the Thread interface.
func (*CommonThread) ReturnValues ¶
func (t *CommonThread) ReturnValues(cfg LoadConfig) []*Variable
ReturnValues reads the return values from the function executing on this thread using the provided LoadConfig.
type CpuArch ¶
type CpuArch interface {
String() string
}
CpuArch is a stringer interface representing CPU architectures.
type Defer ¶
type Defer struct { DeferredPC uint64 // Value of field _defer.fn.fn, the deferred function DeferPC uint64 // PC address of instruction that added this defer SP uint64 // Value of SP register when this function was deferred (this field gets adjusted when the stack is moved to match the new stack space) Unreadable error // contains filtered or unexported fields }
Defer represents one deferred call
type Direction ¶
type Direction int8
Direction is the direction of execution for the target process.
type ElfDynamicSection ¶
type ElfDynamicSection struct { Addr uint64 // relocated address of where the .dynamic section is mapped in memory Size uint64 // size of the .dynamic section of the executable }
ElfDynamicSection describes the .dynamic section of an ELF executable.
type ErrCouldNotFindLine ¶
type ErrCouldNotFindLine struct {
// contains filtered or unexported fields
}
func (*ErrCouldNotFindLine) Error ¶
func (err *ErrCouldNotFindLine) Error() string
type ErrFunctionNotFound ¶
type ErrFunctionNotFound struct {
FuncName string
}
ErrFunctionNotFound is returned when failing to find the function named 'FuncName' within the binary.
func (*ErrFunctionNotFound) Error ¶
func (err *ErrFunctionNotFound) Error() string
type ErrNoBuildIDNote ¶
type ErrNoBuildIDNote struct{}
ErrNoBuildIDNote is used in openSeparateDebugInfo to signal there's no build-id note on the binary, so LoadBinaryInfoElf will return the error message coming from elfFile.DWARF() instead.
func (*ErrNoBuildIDNote) Error ¶
func (e *ErrNoBuildIDNote) Error() string
type ErrNoGoroutine ¶
type ErrNoGoroutine struct {
// contains filtered or unexported fields
}
ErrNoGoroutine returned when a G could not be found for a specific thread.
func (ErrNoGoroutine) Error ¶
func (ng ErrNoGoroutine) Error() string
type ErrNoSourceForPC ¶
type ErrNoSourceForPC struct {
// contains filtered or unexported fields
}
ErrNoSourceForPC is returned when the given address does not correspond with a source file location.
func (*ErrNoSourceForPC) Error ¶
func (err *ErrNoSourceForPC) Error() string
type ErrProcessExited ¶
ErrProcessExited indicates that the process has exited and contains both process id and exit status.
func (ErrProcessExited) Error ¶
func (pe ErrProcessExited) Error() string
type ErrThreadBlocked ¶
type ErrThreadBlocked struct{}
ErrThreadBlocked is returned when the thread is blocked in the scheduler.
func (ErrThreadBlocked) Error ¶
func (tbe ErrThreadBlocked) Error() string
type ErrUnsupportedArch ¶
type ErrUnsupportedArch struct {
// contains filtered or unexported fields
}
ErrUnsupportedArch is returned when attempting to debug a binary compiled for an unsupported architecture.
func (*ErrUnsupportedArch) Error ¶
func (e *ErrUnsupportedArch) Error() string
type EvalScope ¶
type EvalScope struct { Location Regs op.DwarfRegisters Mem MemoryReadWriter // Target's memory BinInfo *BinaryInfo // contains filtered or unexported fields }
EvalScope is the scope for variable evaluation. Contains the thread, current location (PC), and canonical frame address.
func ConvertEvalScope ¶
ConvertEvalScope returns a new EvalScope in the context of the specified goroutine ID and stack frame. If deferCall is > 0 the eval scope will be relative to the specified deferred call.
func FrameToScope ¶
func FrameToScope(bi *BinaryInfo, thread MemoryReadWriter, g *G, frames ...Stackframe) *EvalScope
FrameToScope returns a new EvalScope for frames[0]. If frames has at least two elements all memory between frames[0].Regs.SP() and frames[1].Regs.CFA will be cached. Otherwise all memory between frames[0].Regs.SP() and frames[0].Regs.CFA will be cached.
func GoroutineScope ¶
GoroutineScope returns an EvalScope for the goroutine running on the given thread.
func ThreadScope ¶
ThreadScope returns an EvalScope for the given thread.
func (*EvalScope) DwarfReader ¶
DwarfReader returns the DwarfReader containing the Dwarf information for the target process.
func (*EvalScope) EvalExpression ¶
func (scope *EvalScope) EvalExpression(expr string, cfg LoadConfig) (*Variable, error)
EvalExpression returns the value of the given expression.
func (*EvalScope) EvalVariable ¶
func (scope *EvalScope) EvalVariable(name string, cfg LoadConfig) (*Variable, error)
EvalVariable returns the value of the given expression (backwards compatibility).
func (*EvalScope) FunctionArguments ¶
func (scope *EvalScope) FunctionArguments(cfg LoadConfig) ([]*Variable, error)
FunctionArguments returns the name, value, and type of all current function arguments.
func (*EvalScope) LocalVariables ¶
func (scope *EvalScope) LocalVariables(cfg LoadConfig) ([]*Variable, error)
LocalVariables returns all local variables from the current function scope.
func (*EvalScope) Locals ¶
Locals fetches all variables of a specific type in the current function scope.
func (*EvalScope) PackageVariables ¶
func (scope *EvalScope) PackageVariables(cfg LoadConfig) ([]*Variable, error)
PackageVariables returns the name, value, and type of all package variables in the application.
func (*EvalScope) SetVariable ¶
SetVariable sets the value of the named variable
type Function ¶
type Function struct { Name string Entry, End uint64 // same as DW_AT_lowpc and DW_AT_highpc // InlinedCalls lists all inlined calls to this function InlinedCalls []InlinedCall // contains filtered or unexported fields }
Function describes a function in the target program.
func (*Function) BaseName ¶
BaseName returns the symbol name without the package or receiver name. Borrowed from $GOROOT/debug/gosym/symtab.go
func (*Function) PackageName ¶
PackageName returns the package part of the symbol name, or the empty string if there is none. Borrowed from $GOROOT/debug/gosym/symtab.go
func (*Function) PrologueEndPC ¶
PrologueEndPC returns the PC just after the function prologue
func (*Function) ReceiverName ¶
ReceiverName returns the receiver type name of this symbol, or the empty string if there is none. Borrowed from $GOROOT/debug/gosym/symtab.go
type G ¶
type G struct { ID int // Goroutine ID PC uint64 // PC of goroutine when it was parked. SP uint64 // SP of goroutine when it was parked. BP uint64 // BP of goroutine when it was parked (go >= 1.7). LR uint64 // LR of goroutine when it was parked. GoPC uint64 // PC of 'go' statement that created this goroutine. StartPC uint64 // PC of the first function run on this goroutine. Status uint64 SystemStack bool // SystemStack is true if this goroutine is currently executing on a system stack. // Information on goroutine location CurrentLoc Location // Thread that this goroutine is currently allocated to Thread Thread Unreadable error // could not read the G struct // contains filtered or unexported fields }
G represents a runtime G (goroutine) structure (at least the fields that Delve is interested in).
func FindGoroutine ¶
FindGoroutine returns a G struct representing the goroutine specified by `gid`.
func GetG ¶
GetG returns information on the G (goroutine) that is executing on this thread.
The G structure for a thread is stored in thread local storage. Here we simply calculate the address and read and parse the G struct.
We cannot simply use the allg linked list in order to find the M that represents the given OS thread and follow its G pointer because on Darwin mach ports are not universal, so our port for this thread would not map to the `id` attribute of the M structure. Also, when linked against libc, Go prefers the libc version of clone as opposed to the runtime version. This has the consequence of not setting M.id for any thread, regardless of OS.
In order to get around all this craziness, we read the address of the G structure for the current thread from the thread local storage area.
func GoroutinesInfo ¶
GoroutinesInfo searches for goroutines starting at index 'start', and returns an array of up to 'count' (or all found elements, if 'count' is 0) G structures representing the information Delve care about from the internal runtime G structure. GoroutinesInfo also returns the next index to be used as 'start' argument while scanning for all available goroutines, or -1 if there was an error or if the index already reached the last possible value.
func (*G) Stacktrace ¶
func (g *G) Stacktrace(depth int, opts StacktraceOptions) ([]Stackframe, error)
Stacktrace returns the stack trace for a goroutine. Note the locations in the array are return addresses not call addresses.
func (*G) UserCurrent ¶
UserCurrent returns the location the users code is at, or was at before entering a runtime function.
type Image ¶
Image represents a loaded library file (shared object on linux, DLL on windows).
func (*Image) DwarfReader ¶
DwarfReader returns a reader for the dwarf data
type Info ¶
type Info interface { Pid() int // ResumeNotify specifies a channel that will be closed the next time // ContinueOnce finishes resuming the target. ResumeNotify(chan<- struct{}) // Valid returns true if this Process can be used. When it returns false it // also returns an error describing why the Process is invalid (either // ErrProcessExited or ErrProcessDetached). Valid() (bool, error) BinInfo() *BinaryInfo EntryPoint() (uint64, error) ThreadInfo }
Info is an interface that provides general information on the target.
type InlinedCall ¶
type InlinedCall struct {
LowPC, HighPC uint64 // Address range of the generated inlined instructions
// contains filtered or unexported fields
}
InlinedCall represents a concrete inlined call to a function.
type InvalidAddressError ¶
type InvalidAddressError struct {
Address uint64
}
InvalidAddressError represents the result of attempting to set a breakpoint at an invalid address.
func (InvalidAddressError) Error ¶
func (iae InvalidAddressError) Error() string
type IsNilErr ¶
type IsNilErr struct {
// contains filtered or unexported fields
}
IsNilErr is returned when a variable is nil.
type LoadConfig ¶
type LoadConfig struct { // FollowPointers requests pointers to be automatically dereferenced. FollowPointers bool // MaxVariableRecurse is how far to recurse when evaluating nested types. MaxVariableRecurse int // MaxStringLen is the maximum number of bytes read from a string MaxStringLen int // MaxArrayValues is the maximum number of elements read from an array, a slice or a map. MaxArrayValues int // MaxStructFields is the maximum number of fields read from a struct, -1 will read all fields. MaxStructFields int // MaxMapBuckets is the maximum number of map buckets to read before giving up. // A value of 0 will read as many buckets as necessary until the entire map // is read or MaxArrayValues is reached. // // Loading a map is an operation that issues O(num_buckets) operations. // Normally the number of buckets is proportional to the number of elements // in the map, since the runtime tries to keep the load factor of maps // between 40% and 80%. // // It is possible, however, to create very sparse maps either by: // a) adding lots of entries to a map and then deleting most of them, or // b) using the make(mapType, N) expression with a very large N // // When this happens delve will have to scan many empty buckets to find the // few entries in the map. // MaxMapBuckets can be set to avoid annoying slowdowns␣while reading // very sparse maps. // // Since there is no good way for a user of delve to specify the value of // MaxMapBuckets, this field is not actually exposed through the API. // Instead (*EvalScope).LocalVariables and (*EvalScope).FunctionArguments // set this field automatically to MaxArrayValues * maxMapBucketsFactor. // Every other invocation uses the default value of 0, obtaining the old behavior. // In practice this means that debuggers using the ListLocalVars or // ListFunctionArgs API will not experience a massive slowdown when a very // sparse map is in scope, but evaluating a single variable will still work // correctly, even if the variable in question is a very sparse map. MaxMapBuckets int }
LoadConfig controls how variables are loaded from the targets memory.
type Location ¶
Location represents the location of a thread. Holds information on the current instruction address, the source file:line, and the function.
type MemoryReadWriter ¶
type MemoryReadWriter interface { MemoryReader WriteMemory(addr uintptr, data []byte) (written int, err error) }
MemoryReadWriter is an interface for reading or writing to the targets memory. This allows us to read from the actual target memory or possibly a cache.
func DereferenceMemory ¶
func DereferenceMemory(mem MemoryReadWriter) MemoryReadWriter
DereferenceMemory returns a MemoryReadWriter that can read and write the memory pointed to by pointers in this memory. Normally mem and mem.Dereference are the same object, they are different only if this MemoryReadWriter is used to access memory outside of the normal address space of the inferior process (such as data contained in registers, or composite memory).
type MemoryReader ¶
type MemoryReader interface { // ReadMemory is just like io.ReaderAt.ReadAt. ReadMemory(buf []byte, addr uintptr) (n int, err error) }
MemoryReader is like io.ReaderAt, but the offset is a uintptr so that it can address all of 64-bit memory. Redundant with memoryReadWriter but more easily suited to working with the standard io package.
type NewTargetConfig ¶
type NewTargetConfig struct { Path string // path of the main executable DebugInfoDirs []string // Directories to search for split debug info WriteBreakpoint WriteBreakpointFn // Function to write a breakpoint to the target process DisableAsyncPreempt bool // Go 1.14 asynchronous preemption should be disabled StopReason StopReason // Initial stop reason }
NewTargetConfig contains the configuration for a new Target object,
type NoBreakpointError ¶
type NoBreakpointError struct {
Addr uint64
}
NoBreakpointError is returned when trying to clear a breakpoint that does not exist.
func (NoBreakpointError) Error ¶
func (nbp NoBreakpointError) Error() string
type NullAddrError ¶
type NullAddrError struct{}
NullAddrError is an error for a null address.
func (NullAddrError) Error ¶
func (n NullAddrError) Error() string
type PackageBuildInfo ¶
type Process ¶
type Process interface { Info ProcessManipulation BreakpointManipulation RecordingManipulation }
Process represents the target of the debugger. This target could be a system process, core file, etc.
Implementations of Process are not required to be thread safe and users of Process should not assume they are. There is one exception to this rule: it is safe to call RequestManualStop concurrently with ContinueOnce.
type ProcessInternal ¶
type ProcessInternal interface { SetCurrentThread(Thread) // Restart restarts the recording from the specified position, or from the // last checkpoint if pos == "". // If pos starts with 'c' it's a checkpoint ID, otherwise it's an event // number. Restart(pos string) error Detach(bool) error ContinueOnce() (trapthread Thread, stopReason StopReason, err error) }
ProcessInternal holds a set of methods that are not meant to be called by anyone except for an instance of `proc.Target`. These methods are not safe to use by themselves and should never be called directly outside of the `proc` package. This is temporary and in support of an ongoing refactor.
type ProcessManipulation ¶
type ProcessManipulation interface { RequestManualStop() error // CheckAndClearManualStopRequest returns true the first time it's called // after a call to RequestManualStop. CheckAndClearManualStopRequest() bool }
ProcessManipulation is an interface for changing the execution state of a process.
type RecordingManipulation ¶
type RecordingManipulation interface { // Recorded returns true if the current process is a recording and the path // to the trace directory. Recorded() (recorded bool, tracedir string) // Direction changes execution direction. ChangeDirection(Direction) error // GetDirection returns the current direction of execution. GetDirection() Direction // When returns current recording position. When() (string, error) // Checkpoint sets a checkpoint at the current position. Checkpoint(where string) (id int, err error) // Checkpoints returns the list of currently set checkpoint. Checkpoints() ([]Checkpoint, error) // ClearCheckpoint removes a checkpoint. ClearCheckpoint(id int) error }
RecordingManipulation is an interface for manipulating process recordings.
type Register ¶
type Register struct { Name string Reg *op.DwarfRegister }
Register represents a CPU register.
func AppendBytesRegister ¶
AppendBytesRegister will create a new Register struct with the name and value specified and append it to the `regs` slice.
type Registers ¶
type Registers interface { PC() uint64 SP() uint64 BP() uint64 TLS() uint64 // GAddr returns the address of the G variable if it is known, 0 and false otherwise GAddr() (uint64, bool) Get(int) (uint64, error) Slice(floatingPoint bool) []Register // Copy returns a copy of the registers that is guaranteed not to change // when the registers of the associated thread change. Copy() Registers }
Registers is an interface for a generic register type. The interface encapsulates the generic values / actions we need independent of arch. The concrete register types will be different depending on OS/Arch.
type Stackframe ¶
type Stackframe struct {
Current, Call Location
// Frame registers.
Regs op.DwarfRegisters
// Return address for this stack frame (as read from the stack frame itself).
Ret uint64
// Err is set if an error occurred during stacktrace
Err error
// SystemStack is true if this frame belongs to a system stack.
SystemStack bool
// Inlined is true if this frame is actually an inlined call.
Inlined bool
// Bottom is true if this is the bottom of the stack
Bottom bool
// TopmostDefer is the defer that would be at the top of the stack when a
// panic unwind would get to this call frame, in other words it's the first
// deferred function that will be called if the runtime unwinds past this
// call frame.
TopmostDefer *Defer
// Defers is the list of functions deferred by this stack frame (so far).
Defers []*Defer
// contains filtered or unexported fields
}
Stackframe represents a frame in a system stack.
Each stack frame has two locations Current and Call.
For the topmost stackframe Current and Call are the same location.
For stackframes after the first Current is the location corresponding to the return address and Call is the location of the CALL instruction that was last executed on the frame. Note however that Call.PC is always equal to Current.PC, because finding the correct value for Call.PC would require disassembling each function in the stacktrace.
For synthetic stackframes generated for inlined function calls Current.Fn is the function containing the inlining and Call.Fn in the inlined function.
func ThreadStacktrace ¶
func ThreadStacktrace(thread Thread, depth int) ([]Stackframe, error)
ThreadStacktrace returns the stack trace for thread. Note the locations in the array are return addresses not call addresses.
func (*Stackframe) FrameOffset ¶
func (frame *Stackframe) FrameOffset() int64
FrameOffset returns the address of the stack frame, absolute for system stack frames or as an offset from stackhi for goroutine stacks (a negative value).
func (*Stackframe) FramePointerOffset ¶
func (frame *Stackframe) FramePointerOffset() int64
FramePointerOffset returns the value of the frame pointer, absolute for system stack frames or as an offset from stackhi for goroutine stacks (a negative value).
type StacktraceOptions ¶
type StacktraceOptions uint16
const ( // StacktraceReadDefers requests a stacktrace decorated with deferred calls // for each frame. StacktraceReadDefers StacktraceOptions = 1 << iota // StacktraceSimple requests a stacktrace where no stack switches will be // attempted. StacktraceSimple // StacktraceG requests a stacktrace starting with the register // values saved in the runtime.g structure. StacktraceG )
type StopReason ¶
type StopReason uint8
StopReason describes the reason why the target process is stopped. A process could be stopped for multiple simultaneous reasons, in which case only one will be reported.
const ( StopUnknown StopReason = iota StopLaunched // The process was just launched StopAttached // The debugger stopped the process after attaching StopExited // The target process terminated StopBreakpoint // The target process hit one or more software breakpoints StopHardcodedBreakpoint // The target process hit a hardcoded breakpoint (for example runtime.Breakpoint()) StopManual // A manual stop was requested StopNextFinished // The next/step/stepout command terminated StopCallReturned // An injected call completed )
type Target ¶
type Target struct { Process // StopReason describes the reason why the target process is stopped. // A process could be stopped for multiple simultaneous reasons, in which // case only one will be reported. StopReason StopReason // contains filtered or unexported fields }
Target represents the process being debugged.
func NewTarget ¶
func NewTarget(p Process, cfg NewTargetConfig) (*Target, error)
NewTarget returns an initialized Target object.
func (*Target) ClearAllGCache ¶
func (t *Target) ClearAllGCache()
ClearAllGCache clears the internal Goroutine cache. This should be called anytime the target process executes instructions.
func (*Target) Continue ¶
Continue continues execution of the debugged process. It will continue until it hits a breakpoint or is otherwise stopped.
func (*Target) Detach ¶
Detach will detach the target from the underylying process. This means the debugger will no longer receive events from the process we were previously debugging. If kill is true then the process will be killed when we detach.
func (*Target) Restart ¶
Restart will start the process over from the location specified by the "from" locspec. This is only useful for recorded targets. Restarting of a normal process happens at a higher level (debugger.Restart).
func (*Target) SelectedGoroutine ¶
SelectedGoroutine returns the currently selected goroutine.
func (*Target) Step ¶
Step will continue until another source line is reached. Will step into functions.
func (*Target) StepInstruction ¶
StepInstruction will continue the current thread for exactly one instruction. This method affects only the thread associated with the selected goroutine. All other threads will remain stopped.
func (*Target) StepOut ¶
StepOut will continue until the current goroutine exits the function currently being executed or a deferred function is executed
func (*Target) SupportsFunctionCalls ¶
SupportsFunctionCalls returns whether or not the backend supports calling functions during a debug session. Currently only non-recorded processes running on AMD64 support function calls.
func (*Target) SwitchGoroutine ¶
SwitchGoroutine will change the selected and active goroutine.
func (*Target) SwitchThread ¶
SwitchThread will change the selected and active thread.
type Thread ¶
type Thread interface { MemoryReadWriter Location() (*Location, error) // Breakpoint will return the breakpoint that this thread is stopped at or // nil if the thread is not stopped at any breakpoint. Breakpoint() *BreakpointState ThreadID() int // Registers returns the CPU registers of this thread. The contents of the // variable returned may or may not change to reflect the new CPU status // when the thread is resumed or the registers are changed by calling // SetPC/SetSP/etc. // To insure that the the returned variable won't change call the Copy // method of Registers. Registers(floatingPoint bool) (Registers, error) // RestoreRegisters restores saved registers RestoreRegisters(Registers) error BinInfo() *BinaryInfo StepInstruction() error // Blocked returns true if the thread is blocked Blocked() bool // SetCurrentBreakpoint updates the current breakpoint of this thread, if adjustPC is true also checks for breakpoints that were just hit (this should only be passed true after a thread resume) SetCurrentBreakpoint(adjustPC bool) error // Common returns the CommonThread structure for this thread Common() *CommonThread SetPC(uint64) error SetSP(uint64) error SetDX(uint64) error }
Thread represents a thread.
type ThreadInfo ¶
type ThreadInfo interface { FindThread(threadID int) (Thread, bool) ThreadList() []Thread CurrentThread() Thread }
ThreadInfo is an interface for getting information on active threads in the process.
type Variable ¶
type Variable struct { Addr uintptr OnlyAddr bool Name string DwarfType godwarf.Type RealType godwarf.Type Kind reflect.Kind Value constant.Value FloatSpecial floatSpecial Len int64 Cap int64 Flags variableFlags // Base address of arrays, Base address of the backing array for slices (0 for nil slices) // Base address of the backing byte array for strings // address of the struct backing chan and map variables // address of the function entry point for function variables (0 for nil function pointers) Base uintptr Children []Variable Unreadable error LocationExpr *locationExpr // location expression DeclLine int64 // line number of this variable's declaration // contains filtered or unexported fields }
Variable represents a variable. It contains the address, name, type and other information parsed from both the Dwarf information and the memory of the debugged process. If OnlyAddr is true, the variables value has not been loaded.
func (*Variable) ConstDescr ¶
ConstDescr describes the value of v using constants.
func (*Variable) TypeString ¶
TypeString returns the string representation of the type of this variable.
Source Files ¶
- amd64_arch.go
- amd64_disasm.go
- arch.go
- arm64_arch.go
- arm64_disasm.go
- bininfo.go
- breakpoints.go
- disasm.go
- doc.go
- eval.go
- fncall.go
- goroutine_cache.go
- i386_arch.go
- i386_disasm.go
- interface.go
- mem.go
- moduledata.go
- pe.go
- registers.go
- stack.go
- target.go
- target_exec.go
- threads.go
- types.go
- variables.go
- x86_disasm.go
Directories ¶
Path | Synopsis |
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This package contains functions and data structures used by both the linux implementation of the native backend and the core backend to deal with structures used by the linux kernel.
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This package contains functions and data structures used by both the linux implementation of the native backend and the core backend to deal with structures used by the linux kernel. |