dwarf.Data

本文整理汇总了Golang中debug/dwarf.Data类的典型用法代码### 示例。如果您正苦于以下问题：Golang Data类的具体用法？Golang Data怎么用？Golang Data使用的例子？那么恭喜您, 这里精选的类代码### 示例或许可以为您提供帮助。

在下文中一共展示了Data类的6个代码### 示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码### 示例。

示例1: globalsMap

// map from global address to Field at that address
func globalsMap(d *Dump, w *dwarf.Data, t map[dwarf.Offset]dwarfType) *heap {
    h := new(heap)
    r := w.Reader()
    for {
        e, err := r.Next()
        if err != nil {
            log.Fatal(err)
        }
        if e == nil {
            break
        }
        if e.Tag != dwarf.TagVariable {
            continue
        }
        name := e.Val(dwarf.AttrName).(string)
        typ := t[e.Val(dwarf.AttrType).(dwarf.Offset)]
        locexpr := e.Val(dwarf.AttrLocation).([]uint8)
        if len(locexpr) == 0 || locexpr[0] != dw_op_addr {
            continue
        }
        loc := readPtr(d, locexpr[1:])
        if typ == nil {
            // lots of non-Go global symbols hit here (rodata, reflect.cvtFloat·f, ...)
            h.Insert(loc, Field{FieldKindPtr, 0, "~" + name, ""})
            continue
        }
        for _, f := range typ.Fields() {
            h.Insert(loc+f.Offset, Field{f.Kind, 0, joinNames(name, f.Name), f.BaseType})
        }
    }
    return h
}

开发者ID:lamproae，项目名称:hprof，代码行数:33，代码来源:parser.go

示例2: main

//============================================================================
//      main : Entry point.
//----------------------------------------------------------------------------
func main() {

    var dwarfData *dwarf.Data
    var theFile *macho.File
    var theErr os.Error
    var relativeAddress uint64
    var runtimeAddress uint64
    var loadAddress uint64
    var segmentAddress uint64
    var pathMacho string
    var pathDsym string

    // Parse our arguments
    flag.Uint64Var(&runtimeAddress, "raddr", 0, "")
    flag.Uint64Var(&loadAddress, "laddr", 0, "")
    flag.StringVar(&pathMacho, "macho", "", "")
    flag.StringVar(&pathDsym, "dsym", "", "")
    flag.Parse()

    if runtimeAddress == 0 || loadAddress == 0 || pathMacho == "" || pathDsym == "" {
        printHelp()
    }

    // Find the text segment address
    theFile, theErr = macho.Open(pathMacho)
    if theErr != nil {
        fatalError("Can't open Mach-O file: " + theErr.String())
    }

    segmentAddress = theFile.Segment("__TEXT").Addr

    theFile.Close()

    // Calculate the target address
    relativeAddress = runtimeAddress - loadAddress
    gTargetAddress = segmentAddress + relativeAddress

    // Find the target
    theFile, theErr = macho.Open(pathDsym)
    if theErr != nil {
        fatalError("Can't open .dsym file: " + theErr.String())
    }

    dwarfData, theErr = theFile.DWARF()
    if theErr != nil {
        fatalError("Can't find DWARF info: " + theErr.String())
    }

    processChildren(dwarfData.Reader(), 0, false)

    theFile.Close()
}

开发者ID:refnum，项目名称:gatos，代码行数:55，代码来源:gatos.go

示例3: findVariable

func findVariable(d *dwarf.Data, name string) (*variable, error) {
    dr := d.Reader()
    for {
        e, err := dr.Next()
        if e == nil || err != nil {
            return nil, err
        }

        if e.Tag != dwarf.TagVariable {
            continue
        }

        aname, ok := e.Val(dwarf.AttrName).(string)
        if !ok || aname != name {
            continue
        }
        loc, ok := e.Val(dwarf.AttrLocation).([]uint8)
        if !ok {
            continue
        }
        if loc[0] != 3 {
            return nil, fmt.Errorf("can't determine variable addr")
        }
        addr := uint64(0)
        switch len(loc) {
        case 5:
            addr = uint64(binary.LittleEndian.Uint32(loc[1:]))
        case 9:
            addr = uint64(binary.LittleEndian.Uint64(loc[1:]))
        default:
            return nil, fmt.Errorf("unknown addr size")
        }

        off, ok := e.Val(dwarf.AttrType).(dwarf.Offset)
        if !ok {
            continue
        }
        typ, err := d.Type(off)
        if err != nil {
            return nil, err
        }

        return &variable{Addr: addr, Type: typ}, nil
    }
    return nil, nil
}

开发者ID:ebfe，项目名称:gover，代码行数:46，代码来源:main.go

示例4: argsMap

// Makes a map from <function name, offset in arg area> to name of field.
func argsMap(d *Dump, w *dwarf.Data, t map[dwarf.Offset]dwarfType) map[localKey]string {
    m := make(map[localKey]string, 0)
    r := w.Reader()
    var funcname string
    for {
        e, err := r.Next()
        if err != nil {
            log.Fatal(err)
        }
        if e == nil {
            break
        }
        switch e.Tag {
        case dwarf.TagSubprogram:
            funcname = e.Val(dwarf.AttrName).(string)
        case dwarf.TagFormalParameter:
            if e.Val(dwarf.AttrName) == nil {
                continue
            }
            name := e.Val(dwarf.AttrName).(string)
            typ := t[e.Val(dwarf.AttrType).(dwarf.Offset)]
            loc := e.Val(dwarf.AttrLocation).([]uint8)
            if len(loc) == 0 || loc[0] != dw_op_call_frame_cfa {
                break
            }
            var offset int64
            if len(loc) == 1 {
                offset = 0
            } else if len(loc) >= 3 && loc[1] == dw_op_consts && loc[len(loc)-1] == dw_op_plus {
                loc, offset = readSleb(loc[2 : len(loc)-1])
                if len(loc) != 0 {
                    break
                }
            }
            for _, f := range typ.Fields() {
                m[localKey{funcname, uint64(offset)}] = joinNames(name, f.Name)
            }
        }
    }
    return m
}

开发者ID:lamproae，项目名称:hprof，代码行数:42，代码来源:parser.go

示例5: New

// New returns a reader for the specified dwarf data.
func New(data *dwarf.Data) *Reader {
    return &Reader{data.Reader(), 0}
}

开发者ID:no2key，项目名称:delve，代码行数:4，代码来源:reader.go