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| author | Thiago Jung Bauermann <bauerman@br.ibm.com> | 2007-10-25 18:01:58 +0000 |
|---|---|---|
| committer | Thiago Jung Bauermann <bauerman@br.ibm.com> | 2007-10-25 18:01:58 +0000 |
| commit | 27bc4d809ea2b4a3e4833806494db3a2fee83c64 (patch) | |
| tree | 828f8e1b2e3e055419d3ce36e1d1cb41742d0a5a /gdb/valarith.c | |
| parent | 7678ef8fb055dd4853c7c6b25f739a8d74650899 (diff) | |
| download | gdb-27bc4d809ea2b4a3e4833806494db3a2fee83c64.zip gdb-27bc4d809ea2b4a3e4833806494db3a2fee83c64.tar.gz gdb-27bc4d809ea2b4a3e4833806494db3a2fee83c64.tar.bz2 | |
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.
Diffstat (limited to 'gdb/valarith.c')
| -rw-r--r-- | gdb/valarith.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gdb/valarith.c b/gdb/valarith.c index ed65d66..9771ac8 100644 --- a/gdb/valarith.c +++ b/gdb/valarith.c @@ -1376,6 +1376,23 @@ value_neg (struct value *arg1) type = check_typedef (value_type (arg1)); + if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT) + { + struct value *val = allocate_value (result_type); + int len = TYPE_LENGTH (type); + gdb_byte decbytes[16]; /* a decfloat is at most 128 bits long */ + + memcpy(decbytes, value_contents(arg1), len); + + if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_LITTLE) + decbytes[len-1] = decbytes[len - 1] | 0x80; + else + decbytes[0] = decbytes[0] | 0x80; + + memcpy (value_contents_raw (val), decbytes, len); + return val; + } + if (TYPE_CODE (type) == TYPE_CODE_FLT) return value_from_double (result_type, -value_as_double (arg1)); else if (is_integral_type (type)) |