Index: gas/config/tc-avr-nesc.h
===================================================================
--- gas/config/tc-avr-nesc.h.orig	2016-02-01 09:58:37.419903606 +0100
+++ gas/config/tc-avr-nesc.h	2016-02-01 09:58:39.631928732 +0100
Index: gas/expr.c
@@ -143,8 +143,12 @@ extern int avr_force_relocation (struct fix *);
    would print `12 34 56 78'.  The default value is 4.  */
 #define LISTING_WORD_SIZE 2
 
-/* AVR port uses `$' as a logical line separator by default. */
-#define LEX_DOLLAR 0
+/* AVR port uses `$' as a logical line separator and doesn't
+   allow it in symbols. We allow it in the middle of symbols.
+   We also hack get_symbol_end to disallow it at the end of a symbol. */
+#define LEX_DOLLAR 1
+#define TC_EOL_IN_INSN(PTR)   (*(PTR) == '$' && is_part_of_name((PTR)[-1]) && is_part_of_name((PTR)[1]))
+#define TC_FORBID_DOLLAR_AT_END
 
 /* An `.lcomm' directive with no explicit alignment parameter will
    use this macro to set P2VAR to the alignment that a request for

===================================================================
--- gas/expr.c.orig	2016-02-01 09:58:35.743884569 +0100
+++ gas/expr.c	2016-02-01 09:58:39.631928732 +0100
@@ -2342,6 +2342,15 @@ get_symbol_name (char ** ilp_return)
 	;
       if (is_name_ender (c))
 	c = *input_line_pointer++;
+#ifdef TC_FORBID_DOLLAR_AT_END
+      /* This is for the Atmel AVR platforms. We want to allow $ in symbols
+	 but also as a line separator. Yucky. */
+      if (input_line_pointer[-2] == '$')
+	{
+	  input_line_pointer--;
+	  c = '$';
+	}
+#endif
     }
   else if (c == '"')
     {