Patch for --gstabs and packing support in the generic assembler

[Matthew Hiller <hiller at redhat dot com>]

The assemblers for a number of VLIW/EPOC processors pack multiple
assembler instructions together into a single machine instruction.  (This
is presently implemented in the d10v assembler.)  This patch adds a
variable which keeps track of whether the assembler is outputting stabs
line debug information.  The assembler handles the output of stabs line
debugging information in a peculiar manner, which is why this is necessary
for stabs but not, for example, for dwarf2.

2000-11-06  Matthew Hiller  <hiller@redhat.com>

	* as.c (outputting_line_debug_p): New variable.

	* as.h (outputting_line_debug_p): New extern declaration.

	* stabs.c (stabs_generate_asm_lineno): Sets
	outputting_line_debug_p at function entry and unsets at
	function exit.

Index: gas/as.c
===================================================================
RCS file: /cvs/src/src/gas/as.c,v
retrieving revision 1.19
diff -c -3 -p -r1.19 as.c
*** as.c	2000/10/30 20:15:02	1.19
--- as.c	2000/11/06 23:33:51
*************** static char *listing_filename = NULL;
*** 70,75 ****
--- 70,80 ----
  
  enum debug_info_type debug_type = DEBUG_NONE;
  
+ /* Holds whether the assembler is generating line debugging information
+    or not; potentially used by md_cleanup function.  */
+ 
+ unsigned char outputting_line_debug_p = 0;
+ 
  /* Maximum level of macro nesting.  */
  int max_macro_nest = 100;
  
Index: gas/as.h
===================================================================
RCS file: /cvs/src/src/gas/as.h,v
retrieving revision 1.17
diff -c -3 -p -r1.17 as.h
*** as.h	2000/10/30 20:15:02	1.17
--- as.h	2000/11/06 23:33:51
*************** enum debug_info_type {
*** 467,472 ****
--- 467,475 ----
  };
  
  extern enum debug_info_type debug_type;
+ 
+ extern unsigned char outputting_line_debug_p;
+ 
  
  /* Maximum level of macro nesting.  */
  extern int max_macro_nest;
Index: gas/stabs.c
===================================================================
RCS file: /cvs/src/src/gas/stabs.c,v
retrieving revision 1.6
diff -c -3 -p -r1.6 stabs.c
*** stabs.c	2000/09/12 03:56:22	1.6
--- stabs.c	2000/11/06 23:33:51
*************** stabs_generate_asm_lineno ()
*** 558,563 ****
--- 558,565 ----
    char *buf;
    char sym[30];
  
+   outputting_line_debug_p = 1;
+ 
    /* Rather than try to do this in some efficient fashion, we just
       generate a string and then parse it again.  That lets us use the
       existing stabs hook, which expect to see a string, rather than
*************** stabs_generate_asm_lineno ()
*** 588,593 ****
--- 590,596 ----
    colon (sym);
  
    input_line_pointer = hold;
+   outputting_line_debug_p = 0;
  }
  
  /* Emit a function stab.