* ehopt.c: New file.

* as.h (enum _relax_state): Add rs_cfa.
	(check_eh_frame, eh_frame_estimate_size_before_relax): Declare.
	(eh_frame_relax_frag, eh_frame_convert_frag): Declare.
	* read.c (emit_expr): Call check_eh_frame.
	* write.c (cvt_frag_to_fill): Handle rs_cfa.
	(relax_segment): Likewise.
	* Makefile.am: Rebuild dependencies.
 	(GAS_CFILES): Add ehopt.c.
	(GENERIC_OBJS): Add ehopt.o.
	* doc/internals.texi (Frags): Document rs_cfa.

	* as.c (show_usage): Mention --traditional-format.
	(parse_args): Accept --traditional-format.
	* as.h (flag_traditional_format): Declare.
	* output-file.c (output_file_create): If flag_traditional_format,
	set BFD_TRADITIONAL_FORMAT on stdoutput.
	* doc/as.texinfo, doc/as.1: Document --traditional-format.

gas/as.h

@@ -381,7 +381,10 @@ enum _relax_state
 
     /* A DWARF leb128 value; only ELF uses this.  The subtype is 0 for
        unsigned, 1 for signed.  */
-    rs_leb128
+    rs_leb128,
+
+    /* Exception frame information which we may be able to optimize.  */
+    rs_cfa
   };
 
 typedef enum _relax_state relax_stateT;
@@ -432,6 +435,9 @@ COMMON unsigned char flag_print_statistics;
 /* True if local absolute symbols are to be stripped.  */
 COMMON int flag_strip_local_absolute;
 
+/* True if we should generate a traditional format object file.  */
+COMMON int flag_traditional_format;
+
 /* name of emitted object file */
 COMMON char *out_file_name;
 
@@ -585,6 +591,11 @@ typedef struct frag fragS;
 valueT add_to_literal_pool PARAMS ((struct symbol *, valueT, segT, int));
 #endif
 
+int check_eh_frame PARAMS ((struct expressionS *, unsigned int *));
+int eh_frame_estimate_size_before_relax PARAMS ((fragS *));
+int eh_frame_relax_frag PARAMS ((fragS *));
+void eh_frame_convert_frag PARAMS ((fragS *));
+
 #include "expr.h"		/* Before targ-*.h */
 
 /* this one starts the chain of target dependant headers */