forked from Imagelibrary/binutils-gdb
f69fdf9bca
This adds target_float_to_string and target_float_from_string, which dispatch to the corresponding floatformat_ or decimal_ routines. Existing users of those routines are changed to use the new target-float routines instead (most of those places already handle both binary and decimal FP). In addition, two other places are changes to use target_float_from_string: - define_symbol in stabsread.c, when parsing a floating-point literal from stabs debug info - gdbarch-selftest.c when initializing a target format values (to eliminate use of DOUBLEST there). gdb/ChangeLog: 2017-11-06 Ulrich Weigand <uweigand@de.ibm.com> * target-float.c (target_float_to_string): New function. (target_float_from_string): New function. * target-float.h (target_float_to_string): Add prototype. (target_float_from_string): Add prototype. * valprint.c: Include "target-float.h". Do not include "doublest.h" and "dfp.h". (print_floating): Use target_float_to_string. * printcmd.c: Include "target-float.h". Do not include "dfp.h". (printf_floating): Use target_float_to_string. * i387-tdep.c: Include "target-float.h". Do not include "doublest.h". (print_i387_value): Use target_float_to_string. * mips-tdep.c: Include "target-float.h". (mips_print_fp_register): Use target_float_to_string. * sh64-tdep.c: Include "target-float.h". (sh64_do_fp_register): Use target_float_to_string. * parse.c: Include "target-float.h". Do not include "doublest.h" and "dfp.h". (parse_float): Use target_float_from_string. * stabsread.c: Include "target-float.h". Do not include "doublest.h". (define_symbol): Use target_float_from_string. * gdbarch-selftests.c: Include "target-float.h". (register_to_value_test): Use target_float_from_string.
100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/* Floating point routines for GDB, the GNU debugger.
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Copyright (C) 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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#include "defs.h"
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#include "dfp.h"
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#include "doublest.h"
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#include "gdbtypes.h"
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#include "floatformat.h"
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#include "target-float.h"
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/* Typed floating-point routines. These routines operate on floating-point
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values in target format, represented by a byte buffer interpreted as a
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"struct type", which may be either a binary or decimal floating-point
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type (TYPE_CODE_FLT or TYPE_CODE_DECFLOAT). */
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/* Return whether the byte-stream ADDR holds a valid value of
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floating-point type TYPE. */
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bool
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target_float_is_valid (const gdb_byte *addr, const struct type *type)
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{
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if (TYPE_CODE (type) == TYPE_CODE_FLT)
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return floatformat_is_valid (floatformat_from_type (type), addr);
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if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT)
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return true;
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gdb_assert_not_reached ("unexpected type code");
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}
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/* Return whether the byte-stream ADDR, interpreted as floating-point
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type TYPE, is numerically equal to zero (of either sign). */
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bool
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target_float_is_zero (const gdb_byte *addr, const struct type *type)
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{
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if (TYPE_CODE (type) == TYPE_CODE_FLT)
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return (floatformat_classify (floatformat_from_type (type), addr)
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== float_zero);
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if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT)
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return decimal_is_zero (addr, TYPE_LENGTH (type),
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gdbarch_byte_order (get_type_arch (type)));
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gdb_assert_not_reached ("unexpected type code");
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}
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/* Convert the byte-stream ADDR, interpreted as floating-point type TYPE,
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to a string, optionally using the print format FORMAT. */
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std::string
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target_float_to_string (const gdb_byte *addr, const struct type *type,
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const char *format)
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{
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if (TYPE_CODE (type) == TYPE_CODE_FLT)
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return floatformat_to_string (floatformat_from_type (type), addr, format);
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if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT)
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return decimal_to_string (addr, TYPE_LENGTH (type),
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gdbarch_byte_order (get_type_arch (type)),
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format);
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gdb_assert_not_reached ("unexpected type code");
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}
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/* Parse string STRING into a target floating-number of type TYPE and
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store it as byte-stream ADDR. Return whether parsing succeeded. */
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bool
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target_float_from_string (gdb_byte *addr, const struct type *type,
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const std::string &string)
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{
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/* Ensure possible padding bytes in the target buffer are zeroed out. */
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memset (addr, 0, TYPE_LENGTH (type));
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if (TYPE_CODE (type) == TYPE_CODE_FLT)
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return floatformat_from_string (floatformat_from_type (type), addr,
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string);
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if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT)
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return decimal_from_string (addr, TYPE_LENGTH (type),
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gdbarch_byte_order (get_type_arch (type)),
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string);
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gdb_assert_not_reached ("unexpected type code");
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}
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