runtime: runtime.Callers, runtime.CallersFrames

runtime/internal/lib/runtime/extern.go

@@ -4,10 +4,26 @@
 
 package runtime
 
+import (
+	"github.com/goplus/llgo/runtime/internal/clite/debug"
+)
+
 func Caller(skip int) (pc uintptr, file string, line int, ok bool) {
 	panic("todo: runtime.Caller")
 }
 
 func Callers(skip int, pc []uintptr) int {
-	panic("todo: runtime.Callers")
+	if len(pc) == 0 {
+		return 0
+	}
+	n := 0
+	debug.StackTrace(skip, func(fr *debug.Frame) bool {
+		if n >= len(pc) {
+			return false
+		}
+		pc[n] = fr.PC
+		n++
+		return true
+	})
+	return n
 }