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

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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.
This commit is contained in:
Thiago Jung Bauermann
2007-10-25 18:01:58 +00:00
parent 7678ef8fb0
commit 27bc4d809e
9 changed files with 140 additions and 0 deletions
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47
gdb/c-exp.y
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@@ -52,6 +52,7 @@ Boston, MA 02110-1301, USA. */
#include "charset.h"
#include "block.h"
#include "cp-support.h"
#include "dfp.h"
/* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
as well as gratuitiously global symbol names, so we can have multiple
@@ -130,6 +131,10 @@ void yyerror (char *);
DOUBLEST dval;
struct type *type;
} typed_val_float;
struct {
gdb_byte val[16];
struct type *type;
} typed_val_decfloat;
struct symbol *sym;
struct type *tval;
struct stoken sval;
@@ -162,6 +167,7 @@ static int parse_number (char *, int, int, YYSTYPE *);
%token <typed_val_int> INT
%token <typed_val_float> FLOAT
%token <typed_val_decfloat> DECFLOAT
/* Both NAME and TYPENAME tokens represent symbols in the input,
and both convey their data as strings.
@@ -496,6 +502,13 @@ exp : FLOAT
write_exp_elt_opcode (OP_DOUBLE); }
;
exp : DECFLOAT
{ write_exp_elt_opcode (OP_DECFLOAT);
write_exp_elt_type ($1.type);
write_exp_elt_decfloatcst ($1.val);
write_exp_elt_opcode (OP_DECFLOAT); }
;
exp : variable
;
@@ -1077,6 +1090,40 @@ parse_number (p, len, parsed_float, putithere)
char saved_char = p[len];
p[len] = 0; /* null-terminate the token */
/* If it ends at "df", "dd" or "dl", take it as type of decimal floating
point. Return DECFLOAT. */
if (p[len - 2] == 'd' && p[len - 1] == 'f')
{
p[len - 2] = '\0';
putithere->typed_val_decfloat.type
= builtin_type (current_gdbarch)->builtin_decfloat;
decimal_from_string (putithere->typed_val_decfloat.val, 4, p);
p[len] = saved_char;
return (DECFLOAT);
}
if (p[len - 2] == 'd' && p[len - 1] == 'd')
{
p[len - 2] = '\0';
putithere->typed_val_decfloat.type
= builtin_type (current_gdbarch)->builtin_decdouble;
decimal_from_string (putithere->typed_val_decfloat.val, 8, p);
p[len] = saved_char;
return (DECFLOAT);
}
if (p[len - 2] == 'd' && p[len - 1] == 'l')
{
p[len - 2] = '\0';
putithere->typed_val_decfloat.type
= builtin_type (current_gdbarch)->builtin_declong;
decimal_from_string (putithere->typed_val_decfloat.val, 16, p);
p[len] = saved_char;
return (DECFLOAT);
}
num = sscanf (p, DOUBLEST_SCAN_FORMAT "%s",
&putithere->typed_val_float.dval, s);
p[len] = saved_char; /* restore the input stream */