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Diffstat (limited to 'gcc-4.9/libgcc/config/t-hardfp')
-rw-r--r-- | gcc-4.9/libgcc/config/t-hardfp | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/t-hardfp b/gcc-4.9/libgcc/config/t-hardfp new file mode 100644 index 000000000..fe02f8e3d --- /dev/null +++ b/gcc-4.9/libgcc/config/t-hardfp @@ -0,0 +1,81 @@ +# Copyright (C) 2014 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 + +# 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)) + +# 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 |