cl: callRuntimeInit; runtime: TracePanic

internal/runtime/z_c.go

@@ -19,6 +19,7 @@ package runtime
 import (
 	"unsafe"
 
+	"github.com/goplus/llgo/internal/abi"
 	"github.com/goplus/llgo/internal/runtime/c"
 )
 
@@ -27,18 +28,15 @@ func Alloc(size uintptr) unsafe.Pointer {
 	return c.Malloc(size)
 }
 
-/*
-// Panic panics with a value.
-func Panic(v Interface) {
-	c.Printf(c.String("Panic!!!\n"))
+// TracePanic prints panic message.
+func TracePanic(v Interface) {
+	c.Printf(c.Str("Panic(%p)\n"), v.tab._type)
 	kind := abi.Kind(v.tab._type.Kind_)
 	switch {
 	case kind == abi.String:
 		s := (*String)(v.data)
 		cs := c.Alloca(uintptr(s.len) + 1)
-		c.Memcpy(cs, s.data, uintptr(s.len))
-		(*[1 << 30]int8)(cs)[s.len] = 0
-		c.Printf(c.String("%s\n"), cs)
+		c.Printf(c.Str("panic: %s\n"), CStrCopy(cs, *s))
 	}
+	// TODO(xsw): other message type
 }
-*/