One needs to introduce things with a `.file' directive before trying to

do a .loc on it.  BTW, the .loc needs to be in a .text section.
gas 2.11.0 catches these oversights where previous versions did not.

sys/alpha/alpha/pal.s

@@ -43,7 +43,10 @@
 
 __KERNEL_RCSID(1, "$NetBSD: pal.s,v 1.12 1998/02/27 03:44:53 thorpej Exp $");
 
-inc2:	.stabs	__FILE__,132,0,0,inc2; .loc	1 __LINE__
+inc2:	.stabs	__FILE__,132,0,0,inc2
+	.text
+	.loc	1 __LINE__
+
 /*
  * alpha_rpcc: read process cycle counter (XXX INSTRUCTION, NOT PALcode OP)
  */

sys/alpha/alpha/prom_disp.s

@@ -39,7 +39,9 @@ __KERNEL_RCSID(2, "$NetBSD: prom_disp.s,v 1.8 1997/11/03 04:22:03 ross Exp $");
 	.text
 	.align	4
 
-inc3:	.stabs	__FILE__,132,0,0,inc3; .loc	1 __LINE__
+inc3:	.stabs	__FILE__,132,0,0,inc3
+	.text 
+	.loc	1 __LINE__
 /*
  * Dispatcher routine.  Implements prom's calling machinery, saves our
  * callee-saved registers as required by C.

sys/alpha/include/asm.h

@@ -226,6 +226,12 @@
  *
  */
 
+ /*
+  * for `.loc' uses
+  */
+
+	.file	1 __FILE__
+
 /*
  * MCOUNT
  */

sys/boot/alpha/libalpha/pal.S

@@ -44,7 +44,8 @@
 
 #include <machine/asm.h>
 
-inc2:	.stabs	__FILE__,132,0,0,inc2; .loc	1 __LINE__
+/*inc2:	.stabs	__FILE__,132,0,0,inc2; .loc	1 __LINE__*/
+inc2:	.stabs	__FILE__,132,0,0,inc2
 /*
  * alpha_rpcc: read process cycle counter (XXX INSTRUCTION, NOT PALcode OP)
  */