gort

README

gort

• go runtime type: get reflect.Type by name

Usage

• lets you call functions in your binary with just the string of their name

	rt, err := gort.NewDwarfRT("")
	fmt.Printf("test call fmt.Printf\n")

	rets, err = rt.CallFunc("fmt.Printf", true, []reflect.Value{
		reflect.ValueOf("test call fmt.Printf:%d %s\n"),
		reflect.ValueOf(1234),
		reflect.ValueOf("hello"),
	})

• lets you get access to globals in your binary with just the string of their name

	rt, err := gort.NewDwarfRT("")
	rGlobal, err := rt.FindGlobal("main.testGlobal")

• lets you get access to all of the reflect.Types in your binary of their name
  • Caveat: the types must be possible outputs to reflect.TypeOf(val) in your binary

	rt, err := gort.NewDwarfRT("")
	typ, err := rt.FindType("main.testStruct")

Examples

• go build -gcflags=all=-l examples/hello/hello.go
• ./hello

Documentation

Index

• Variables
• func CreateFuncForCodePtr(ftyp reflect.Type, codePtr uint64) reflect.Value
• type DwarfRT
  • func NewDwarfRT(path string) (*DwarfRT, error)
  • func (d *DwarfRT) AddImage(path string, addr uint64) error
  • func (d *DwarfRT) BI() *proc.BinaryInfo
  • func (d *DwarfRT) CallFunc(name string, variadic bool, args []reflect.Value) ([]reflect.Value, error)
  • func (d *DwarfRT) FindFunc(name string, variadic bool) (reflect.Value, error)
  • func (d *DwarfRT) FindFuncEntry(name string) (*proc.Function, error)
  • func (d *DwarfRT) FindFuncPc(name string) (uint64, error)
  • func (d *DwarfRT) FindFuncType(name string, variadic bool) (reflect.Type, error)
  • func (d *DwarfRT) FindGlobal(name string) (reflect.Value, error)
  • func (d *DwarfRT) FindType(name string) (reflect.Type, error)
  • func (d *DwarfRT) ForeachFunc(f func(name string, pc uint64)) error
  • func (d *DwarfRT) ForeachGlobal(f func(name string, v reflect.Value)) error
  • func (d *DwarfRT) ForeachType(f func(name string)) error
  • func (d *DwarfRT) SearchPluginByName(name string) (string, uint64, error)
  • func (d *DwarfRT) SearchPlugins() ([]string, []uint64, error)
• type Func

Variables

var (
	ErrNeedInit         = errors.New("need init")
	ErrNotFound         = errors.New("not found")
	ErrNotSupport       = errors.New("not support")
	ErrTooManyLibraries = errors.New("number of loaded libraries exceeds maximum")
)

Functions

func CreateFuncForCodePtr

func CreateFuncForCodePtr(ftyp reflect.Type, codePtr uint64) reflect.Value

CreateFuncForCodePtr https://github.com/alangpierce/go-forceexport/blob/8f1d6941cd755b975763ddb1f836561edddac2b8/forceexport.go#L31-L51

Types

type DwarfRT

type DwarfRT struct {
	// contains filtered or unexported fields
}

func NewDwarfRT

func NewDwarfRT(path string) (*DwarfRT, error)

func (*DwarfRT) AddImage

func (d *DwarfRT) AddImage(path string, addr uint64) error

func (*DwarfRT) BI

func (d *DwarfRT) BI() *proc.BinaryInfo

func (*DwarfRT) CallFunc

func (d *DwarfRT) CallFunc(name string, variadic bool, args []reflect.Value) ([]reflect.Value, error)

func (*DwarfRT) FindFunc

func (d *DwarfRT) FindFunc(name string, variadic bool) (reflect.Value, error)

func (*DwarfRT) FindFuncEntry

func (d *DwarfRT) FindFuncEntry(name string) (*proc.Function, error)

func (*DwarfRT) FindFuncPc

func (d *DwarfRT) FindFuncPc(name string) (uint64, error)

func (*DwarfRT) FindFuncType

func (d *DwarfRT) FindFuncType(name string, variadic bool) (reflect.Type, error)

func (*DwarfRT) FindGlobal

func (d *DwarfRT) FindGlobal(name string) (reflect.Value, error)

func (*DwarfRT) FindType

func (d *DwarfRT) FindType(name string) (reflect.Type, error)

func (*DwarfRT) ForeachFunc

func (d *DwarfRT) ForeachFunc(f func(name string, pc uint64)) error

func (*DwarfRT) ForeachGlobal

func (d *DwarfRT) ForeachGlobal(f func(name string, v reflect.Value)) error

func (*DwarfRT) ForeachType

func (d *DwarfRT) ForeachType(f func(name string)) error

func (*DwarfRT) SearchPluginByName

func (d *DwarfRT) SearchPluginByName(name string) (string, uint64, error)

func (*DwarfRT) SearchPlugins

func (d *DwarfRT) SearchPlugins() ([]string, []uint64, error)

type Func

type Func struct {
	// contains filtered or unexported fields
}