adding Gofunc field to Pclntabcandidate struct and as param to New ta…

…ble() -- objfile.go

objfile/objfile.go

@@ -33,6 +33,7 @@ type StompMagicCandidate struct {
 type PclntabCandidate struct {
 	SecStart                uint64
 	PclntabVA               uint64
+	GofuncVA		uint64
 	StompMagicCandidateMeta *StompMagicCandidate // some search modes might optimistically try to find moduledata or guess endianess, these hints must match the found moduleData VA later to be considered good candidate
 	Pclntab                 []byte
 	Symtab                  []byte // optional
@@ -129,8 +130,8 @@ func (f *File) Symbols() ([]Sym, error) {
 }
 
 // previously : func (f *File) PCLineTable() (Liner, error) {
-func (f *File) PCLineTable(versionOverride string, knownPclntabVA uint64, knownGoTextBase uint64) ([]PclntabCandidate, error) {
-	return f.entries[0].PCLineTable(versionOverride, knownPclntabVA, knownGoTextBase)
+func (f *File) PCLineTable(versionOverride string, knownPclntabVA uint64, knownGoTextBase uint64, knownGofuncVA uint64) ([]PclntabCandidate, error) {
+	return f.entries[0].PCLineTable(versionOverride, knownPclntabVA, knownGoTextBase, knownGofuncVA)
 }
 
 func (f *File) ModuleDataTable(pclntabVA uint64, runtimeVersion string, version string, is64bit bool, littleendian bool) (secStart uint64, moduleData *ModuleData, err error) {
@@ -211,7 +212,7 @@ func findAllOccurrences(data []byte, searches [][]byte) []int {
 }
 
 // previously: func (e *Entry) PCLineTable() (Liner, error)
-func (e *Entry) PCLineTable(versionOverride string, knownPclntabVA uint64, knownGoTextBase uint64) ([]PclntabCandidate, error) {
+func (e *Entry) PCLineTable(versionOverride string, knownPclntabVA uint64, knownGoTextBase uint64, knownGofuncVA uint64) ([]PclntabCandidate, error) {
 	// If the raw file implements Liner directly, use that.
 	// Currently, only Go intermediate objects and archives (goobj) use this path.
 
@@ -251,11 +252,16 @@ func (e *Entry) PCLineTable(versionOverride string, knownPclntabVA uint64, known
 			continue
 		}
 
-		parsedTable, err := gosym.NewTable(candidate.Symtab, gosym.NewLineTable(candidate.Pclntab, candidate.SecStart), versionOverride)
+		if knownGofuncVA != 0 {
+			candidate.Gofunc
+		}
+
+		parsedTable, err := gosym.NewTable(candidate.Symtab, gosym.NewLineTable(candidate.Pclntab, candidate.SecStart, candidate.Gofunc), versionOverride)
 		if err != nil || parsedTable.Go12line == nil {
 			continue
 		}
 
+
 		// the first good one happens to be correct more often than the last
 		candidate.ParsedPclntab = parsedTable
 		finalCandidates = append(finalCandidates, candidate)