82 lines
1.5 KiB
Go
82 lines
1.5 KiB
Go
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package addr2line
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import (
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"errors"
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"fmt"
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. "ios-wrapper/pkg/ios/macho"
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)
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type Resolver struct {
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symbols []*Symbol
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debuglineInfo *DebuglineInfo
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aslr uint64
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addresses []string
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}
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type Resolved struct {
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Raw uint64
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Base uint64
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Symbol string
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File string
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Line uint32
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}
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func (r *Resolved) Valid() bool {
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return r.File == "" && r.Line == 0
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}
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func (resolver *Resolver) HasNext() bool {
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return len(resolver.addresses) > 0
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}
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func (resolver *Resolver) Next() (*Resolved, error) {
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if !resolver.HasNext() {
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return nil, errors.New("There is no more address to resolve")
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}
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head, tail := resolver.addresses[0], resolver.addresses[1:]
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resolver.addresses = tail
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tofind_aslr, err := ParseAddressString(head)
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if err != nil {
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return nil, fmt.Errorf("Cannot parse hex address (%s)", head)
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}
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tofind := tofind_aslr - resolver.aslr
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symbol := FindSymbol(resolver.symbols, tofind)
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fileLine := resolver.debuglineInfo.Find(tofind)
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if fileLine == nil {
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return &Resolved{
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Raw: tofind_aslr,
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Base: tofind,
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Symbol: symbol,
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File: "",
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Line: 0,
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}, nil
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}
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return &Resolved{
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Raw: tofind_aslr,
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Base: tofind,
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Symbol: symbol,
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File: fileLine.File,
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Line: fileLine.Line,
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}, nil
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}
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func NewResolver(mc *MachoContext, loadaddr uint64, addresses []string) *Resolver {
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symbols := mc.CollectSymbols()
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debuglineInfo := mc.DebugLineInfo()
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imagebase := TryGetImageBase(mc, symbols)
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aslr := loadaddr - imagebase
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return &Resolver{
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symbols,
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debuglineInfo,
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aslr,
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addresses,
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}
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}
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