xtensa.h (ASM_PREFERRED_EH_DATA_FORMAT): Define.

	* config/xtensa/xtensa.h (ASM_PREFERRED_EH_DATA_FORMAT): Define.
	(ASM_OUTPUT_DWARF_PCREL): Define.

From-SVN: r130697

gcc/ChangeLog

+2007-12-07  Bob Wilson  <bob.wilson@acm.org>
+	
+	* config/xtensa/xtensa.h (ASM_PREFERRED_EH_DATA_FORMAT): Define.
+	(ASM_OUTPUT_DWARF_PCREL): Define.
+	
 2007-12-07  Richard Guenther  <rguenther@suse.de>
 
 	PR middle-end/34382

gcc/config/xtensa/xtensa.h

@@ -1067,6 +1067,19 @@ typedef struct xtensa_args
 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (0)
 #define DWARF_FRAME_REGISTERS 16
 #define EH_RETURN_DATA_REGNO(N) ((N) < 2 ? (N) + 2 : INVALID_REGNUM)
+#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL)			\
+  (flag_pic								\
+   ? (((GLOBAL) ? DW_EH_PE_indirect : 0)				\
+      | DW_EH_PE_pcrel | DW_EH_PE_sdata4)				\
+   : DW_EH_PE_absptr)
+
+/* Emit a PC-relative relocation.  */
+#define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL)			\
+  do {									\
+    fputs (integer_asm_op (SIZE, FALSE), FILE);				\
+    assemble_name (FILE, LABEL);					\
+    fputs ("@pcrel", FILE);						\
+  } while (0)
 
 /* Xtensa constant pool breaks the devices in crtstuff.c to control
    section in where code resides.  We have to write it as asm code.  Use