14ad931172
The last remaing use for DOUBLEST is in the code that interfaces to the scripting languages (Python and Guile). The problem here is that we expose interfaces to convert a GDB value to and from native values of floating-point type in those languages, and those by definition use the host floating-point format. While we cannot completely eliminate conversions to/from the host floating-point format here, we still need to get rid of the uses of value_as_double / value_from_double, since those will go away. This patch implements two new target-float.c routine: - target_float_to_host_double - target_float_from_host_double which convert to/from a host "double". Those should only ever be used where a host "double" is mandated by an external interface. gdb/ChangeLog: 2017-11-06 Ulrich Weigand <uweigand@de.ibm.com> * target-float.c (floatformat_to_host_double): New function. (floatformat_from_host_double): Likewise. (target_float_to_host_double): Likewise. (target_float_from_host_double): Likewise. * target-float.h (target_float_to_host_double): Add prototype. (target_float_from_host_double): Likewise. * guile/scm-value.c: Include "target-float.h". (gdbscm_value_to_real): Use target_float_to_host_double. Handle integer source values via value_as_long. * guile/scm-math.c: Include "target-float.h". Do not include "doublest.h", "dfp.h", and "expression.h". (vlscm_convert_typed_number): Use target_float_from_host_double. (vlscm_convert_number): Likewise. * python/py-value.c (valpy_float): Use target_float_to_host_double. (convert_value_from_python): Use target_float_from_host_double.
62 lines
2.2 KiB
C++
62 lines
2.2 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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#include "expression.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 double target_float_to_host_double (const gdb_byte *addr,
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const struct type *type);
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extern void target_float_from_host_double (gdb_byte *addr,
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const struct type *type,
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double 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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extern void target_float_binop (enum exp_opcode opcode,
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const gdb_byte *x, const struct type *type_x,
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const gdb_byte *y, const struct type *type_y,
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gdb_byte *res, const struct type *type_res);
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extern int target_float_compare (const gdb_byte *x, const struct type *type_x,
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const gdb_byte *y, const struct type *type_y);
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#endif
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