50637b26f8
This patch adds the following conversion routines: - target_float_to_longest - target_float_from_longest - target_float_from_ulongest - target_float_convert which call the equivalent decimal_ routines to handle decimal FP, and call helper routines that currently still go via DOUBLEST to handle binary FP. The target_float_convert routine not only handles BFP<->BFP and DFP<->DFP conversions, but also BFP<->DFP, which are implemented by converting to a string and back. These helpers are used in particular to implement conversion from and to FP in value_cast, without going through DOUBLEST there. In order to implement this for the FP<-integer case, the pack_long / pack_unsigned_long routines are extended to support floating-point values as output (thereby allowing use of value_from_[u]longest with a floating-point target type). This latter change also allows simplification of value_one. gdb/ChangeLog: 2017-11-06 Ulrich Weigand <uweigand@de.ibm.com> * target-float.c (floatformat_to_longest): New function. (floatformat_from_longest, floatformat_from_ulongest): Likewise. (floatformat_convert): Likewise. (target_float_to_longest): Likewise. (target_float_from_longest, target_float_from_ulongest): Likewise. (target_float_convert): Likewise. * target-float.h (target_float_to_longest): Add prototype. (target_float_from_longest, target_float_from_ulongest): Likewise. (target_float_convert): Likewise. * value.c (unpack_long): Use target_float_to_longest. (pack_long): Allow FP types. Use target_float_from_longest. (pack_unsigned_long): Likewise using target_float_from_ulongest. * valops.c: Include "target-float.h". Do not include "dfp.h". (value_cast): Handle conversions to FP using target_float_convert, value_from_ulongest, and value_from_longest. (value_one): Use value_from_longest for FP types as well.
47 lines
1.7 KiB
C++
47 lines
1.7 KiB
C++
/* Floating point definitions for GDB.
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Copyright (C) 1986-2017 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef TYPED_FLOAT_H
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#define TYPED_FLOAT_H
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extern bool target_float_is_valid (const gdb_byte *addr,
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const struct type *type);
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extern bool target_float_is_zero (const gdb_byte *addr,
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const struct type *type);
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extern std::string target_float_to_string (const gdb_byte *addr,
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const struct type *type,
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const char *format = nullptr);
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extern bool target_float_from_string (gdb_byte *addr,
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const struct type *type,
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const std::string &string);
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extern LONGEST target_float_to_longest (const gdb_byte *addr,
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const struct type *type);
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extern void target_float_from_longest (gdb_byte *addr,
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const struct type *type,
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LONGEST val);
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extern void target_float_from_ulongest (gdb_byte *addr,
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const struct type *type,
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ULONGEST val);
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extern void target_float_convert (const gdb_byte *from,
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const struct type *from_type,
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gdb_byte *to, const struct type *to_type);
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#endif
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