fix(asm): emit NOPTR data as its own symbol kind

Assisted-by: GLM 5.3

asm/goobj.go

@@ -63,6 +63,7 @@ const (
 const (
 	kindSTEXT       = 1
 	kindSRODATA     = 3
+	kindSNOPTRDATA  = 5
 	kindSDATA       = 7
 	kindSDWARFFCN   = 14
 	kindSDWARFLINES = 20
@@ -305,9 +306,16 @@ func (img *Image) emitGOObject(pkgPath, srcPath string, pre []byte, minLC int, r
 		if !d.Static {
 			name = pkgPath + "." + name
 		}
+		// RODATA implies no pointers, so it wins over NOPTR: the kind is
+		// SRODATA either way, exactly as the toolchain chooses it.  Plain
+		// NOPTR data is SNOPTRDATA, which the linker keeps out of the GC's
+		// type scan; a plain SDATA symbol would demand Go type information
+		// no assembly file can supply, and the link would fail.
 		typ := uint8(kindSDATA)
 		if d.Rodata {
 			typ = kindSRODATA
+		} else if d.Noptr {
+			typ = kindSNOPTRDATA
 		}
 		flag := uint8(0)
 		if d.Dupok {