# Copyright (C) 2014-2015 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