2007-10-25 Wu Zhou <woodzltc@cn.ibm.com>

	    Thiago Jung Bauermann  <bauerman@br.ibm.com>

	* c-exp.y (YYSTYPE): Add typed_val_decfloat for decimal
	floating point in YYSTYPE union.
	(DECFLOAT) Add token and expression element handling code.
	(parse_number): Parse DFP constants, which end with suffix 'df',
	'dd' or 'dl'.  Return DECFLOAT.
	* eval.c (evaluate_subexp_standard): Call value_from_decfloat to
	handle OP_DECFLOAT.
	* expression.h (enum exp_opcode): Add an opcode (OP_DECFLOAT)
	for DFP constants.
	(union exp_element): Add decfloatconst to represent DFP
	elements, which is 16 bytes by default.
	* parse.c (write_exp_elt_decfloatcst): New function to write a
	decimal float const into the expression.
	(operator_length_standard): Set operator length for OP_DECFLOAT
	to 4.
	* parser-defs.h (write_exp_elt_decfloatcst): Prototype.
	* valarith.c (value_neg): Add code to handle the negation
	operation of DFP values.
	* value.c (value_from_decfloat): New function to get the value
	from a decimal floating point.
	* value.h (value_from_decfloat): Prototype.

1 files changed, 22 insertions, 0 deletions

diff --git a/gdb/value.c b/gdb/value.c
index 7085ec1..89759b8 100644
--- a/gdb/value.c
+++ b/gdb/value.c
@@ -34,6 +34,7 @@
 #include "gdb_assert.h"
 #include "regcache.h"
 #include "block.h"
+#include "dfp.h"
 
 /* Prototypes for exported functions. */
 
@@ -1642,6 +1643,27 @@ value_from_double (struct type *type, DOUBLEST num)
 }
 
 struct value *
+value_from_decfloat (struct type *expect_type, struct type *type,
+		      gdb_byte decbytes[16])
+{
+  struct value *val = allocate_value (type);
+  int len = TYPE_LENGTH (type);
+
+  if (expect_type)
+    {
+      int expect_len = TYPE_LENGTH (expect_type);
+      char decstr[128];
+      int real_len;
+
+      decimal_to_string (decbytes, len, decstr);
+      decimal_from_string (decbytes, expect_len, decstr);
+    }
+
+  memcpy (value_contents_raw (val), decbytes, len);
+  return val;
+}
+
+struct value *
 coerce_ref (struct value *arg)
 {
   struct type *value_type_arg_tmp = check_typedef (value_type (arg));