Patch: add dwarf2 debug pseudo for AVR

[Tristan Gingold]

Hi,

I can't find any good reason for not having dwarf2 debug pseudos on AVR.

Ok for trunk ?

Tristan.

gas/
2009-10-27  Tristan Gingold  <gingold@adacore.com>

	* config/tc-avr.c (md_pseudo_table): Add dwarf2 debug pseudo.
	* config/tc-avr.h (DWARF2_LINE_MIN_INSN_LENGTH): Define.
	(DWARF2_ADDR_SIZE): Define.

Index: gas/config/tc-avr.c
===================================================================
RCS file: /cvs/src/src/gas/config/tc-avr.c,v
retrieving revision 1.69
diff -c -r1.69 tc-avr.c
*** gas/config/tc-avr.c	8 Sep 2009 10:36:38 -0000	1.69
--- gas/config/tc-avr.c	27 Oct 2009 14:48:01 -0000
***************
*** 241,246 ****
--- 241,249 ----
   const pseudo_typeS md_pseudo_table[] =
   {
     {"arch", avr_set_arch,	0},
+   {"file", (void (*) (int)) dwarf2_directive_file, 0},
+   {"loc", dwarf2_directive_loc, 0},
+   {"loc_mark_labels", dwarf2_directive_loc_mark_labels, 0},
     { NULL,	NULL,		0}
   };

Index: gas/config/tc-avr.h
===================================================================
RCS file: /cvs/src/src/gas/config/tc-avr.h,v
retrieving revision 1.16
diff -c -r1.16 tc-avr.h
*** gas/config/tc-avr.h	3 Jul 2007 11:01:04 -0000	1.16
--- gas/config/tc-avr.h	27 Oct 2009 14:48:01 -0000
***************
*** 147,149 ****
--- 147,155 ----

   /* This target is buggy, and sets fix size too large.  */
   #define TC_FX_SIZE_SLACK(FIX) 2
+
+ /* AVR instructions are 2 or 4 bytes long.  */
+ #define DWARF2_LINE_MIN_INSN_LENGTH 	2
+
+ /* 32 bits pseudo-addresses are used on AVR.  */
+ #define DWARF2_ADDR_SIZE(bfd) 4