| # Copyright (C) 2014-2022 Free Software Foundation, Inc. |
| |
| # This file is part of GCC. |
| |
| # GCC is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3, or (at your option) |
| # any later version. |
| |
| # GCC is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| |
| # You should have received a copy of the GNU General Public License |
| # along with GCC; see the file COPYING3. If not see |
| # <http://www.gnu.org/licenses/>. |
| |
| # For historical reasons, some targets provide a full set of FP routines |
| # even if there is native hardware support for some of them. This file |
| # is used to define functions that can be implemented directly in hardware. |
| # For example, an __adddf3 defined by this file will use an FPU addition. |
| # |
| # The following variables should be set up before including this file: |
| # |
| # hardfp_float_modes: a list of hardware floating-point modes. |
| # e.g. sf df |
| # hardfp_int_modes: a list of integer modes for which to define conversions; |
| # usually this is "si", since libgcc2.c provides routines |
| # for wider modes |
| # hardfp_extensions: a list of extensions between hardware floating-point modes, |
| # e.g. sfdf |
| # hardfp_truncations: a list of truncations between hardware floating-point |
| # modes, e.g. dfsf |
| # |
| # If some functions that would otherwise be defined should not be |
| # defined by this file (typically because the target would compile |
| # certain operations into a call to the libgcc function, which thus |
| # needs to be defined elsewhere to use software floating point), also |
| # define hardfp_exclusions to be a list of those functions, |
| # e.g. unorddf2. |
| |
| # Functions parameterized by a floating-point mode M. |
| hardfp_func_bases := addM3 subM3 negM2 mulM3 divM3 |
| hardfp_func_bases += eqM2 neM2 geM2 gtM2 leM2 ltM2 unordM2 |
| |
| # Functions parameterized by both a floating-point mode M and an integer mode N. |
| hardfp_int_func_bases := fixMN floatNM floatunNM |
| hardfp_func_bases += $(foreach n, $(hardfp_int_modes), \ |
| $(subst N,$(n),$(hardfp_int_func_bases))) |
| |
| # Get the full list of functions. |
| hardfp_func_list := $(foreach m, $(hardfp_float_modes), \ |
| $(subst M,$(m),$(hardfp_func_bases))) |
| hardfp_func_list += $(foreach pair, $(hardfp_extensions), \ |
| $(subst M,$(pair),extendM2)) |
| hardfp_func_list += $(foreach pair, $(hardfp_truncations), \ |
| $(subst M,$(pair),truncM2)) |
| |
| hardfp_func_list := $(filter-out $(hardfp_exclusions),$(hardfp_func_list)) |
| |
| # Regexp for matching a floating-point mode. |
| hardfp_mode_regexp := $(shell echo $(hardfp_float_modes) | sed 's/ /\\|/g') |
| |
| # Regexp for matching the end of a function name, after the last |
| # floating-point mode. |
| hardfp_suffix_regexp := $(shell echo $(hardfp_int_modes) 2 3 | sed 's/ /\\|/g') |
| |
| # Add -D options to define: |
| # FUNC: the function name (e.g. __addsf3) |
| # OP: the function name without the leading __ and with the last |
| # floating-point mode removed (e.g. add3) |
| # TYPE: the last floating-point mode (e.g. sf) |
| hardfp_defines_for = \ |
| $(shell echo $1 | \ |
| sed 's/\(.*\)\($(hardfp_mode_regexp)\)\($(hardfp_suffix_regexp)\|\)$$/-DFUNC=__& -DOP_\1\3 -DTYPE=\2/') |
| |
| hardfp-o = $(patsubst %,%$(objext),$(hardfp_func_list)) |
| $(hardfp-o): %$(objext): $(srcdir)/config/hardfp.c |
| @echo "Mode = $(hardfp_mode_regexp)" |
| @echo "Suffix = $(hardfp_suffix_regexp)" |
| $(gcc_compile) $(call hardfp_defines_for, $*) -c $< $(vis_hide) -Wno-missing-prototypes |
| libgcc-objects += $(hardfp-o) |
| |
| ifeq ($(enable_shared),yes) |
| hardfp-s-o = $(patsubst %,%_s$(objext),$(hardfp_func_list)) |
| $(hardfp-s-o): %_s$(objext): $(srcdir)/config/hardfp.c |
| $(gcc_s_compile) $(call hardfp_defines_for, $*) -c $< -Wno-missing-prototypes |
| libgcc-s-objects += $(hardfp-s-o) |
| endif |