(FUNCTION_VALUE): New override.

From-SVN: r7812

diff --git a/gcc/config/m68k/atari.h b/gcc/config/m68k/atari.h
index 8b18c5a058be0f7b81038561c49d6dcdc6b533f1..b22a5f6a659b19e3c07e82dd4537492ea3d02883 100644 (file)
--- a/gcc/config/m68k/atari.h
+++ b/gcc/config/m68k/atari.h
@@ -98,3 +98,16 @@ int switch_table_difference_label_flag;
     asm_fprintf (FILE, "%s%%%d:\n", PREFIX, NUM);      \
   else                                                 \
     asm_fprintf (FILE, "%0L%s%d:\n", PREFIX, NUM)
+
+/* Define how to generate (in the callee) the output value of a function
+   and how to find (in the caller) the value returned by a function.  VALTYPE
+   is the data type of the value (as a tree).  If the precise function being
+   called is known, FUNC is its FUNCTION_DECL; otherwise, FUNC is 0.
+   For the Atari generate the result in d0 or fp0 as appropriate. */
+
+#undef FUNCTION_VALUE
+#define FUNCTION_VALUE(VALTYPE, FUNC)                  \
+(TREE_CODE (VALTYPE) == REAL_TYPE && TARGET_68881      \
+ ? gen_rtx (REG, TYPE_MODE (VALTYPE), 16)              \
+ : gen_rtx (REG, TYPE_MODE (VALTYPE), 0))
+