mirror of
https://gcc.gnu.org/git/gcc.git
synced 2024-12-12 05:13:50 +08:00
145 lines
5.3 KiB
Plaintext
145 lines
5.3 KiB
Plaintext
# Copyright (C) 2006-2016 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/>.
|
|
|
|
# Targets using soft-fp should define the following variables:
|
|
#
|
|
# softfp_float_modes: a list of soft-float floating-point modes,
|
|
# e.g. sf df
|
|
# softfp_int_modes: a list of integer modes for which to define conversions,
|
|
# e.g. si di
|
|
# softfp_extensions: a list of extensions between floating-point modes,
|
|
# e.g. sfdf
|
|
# softfp_truncations: a list of truncations between floating-point modes,
|
|
# e.g. dfsf
|
|
#
|
|
# Extensions and truncations should include those where only one mode
|
|
# is a soft-float mode; for example, sftf where sf is hard-float and
|
|
# tf is soft-float.
|
|
#
|
|
# If some additional functions should be built that are not implied by
|
|
# the above settings, also define softfp_extras as a list of those
|
|
# functions, e.g. unorddf2.
|
|
#
|
|
# If the functions should only be built as compat symbols for shared
|
|
# libgcc, not available for new links, also define:
|
|
#
|
|
# softfp_compat := y
|
|
#
|
|
# If the libgcc2.c functions should not be replaced, also define:
|
|
#
|
|
# softfp_exclude_libgcc2 := y
|
|
#
|
|
# Avoiding replacing the libgcc2.c functions is a temporary measure
|
|
# for targets with both hard-float and soft-float multilibs, since
|
|
# these variables apply for all multilibs. With toplevel libgcc,
|
|
# soft-fp can be used conditionally on the multilib instead.
|
|
#
|
|
# If the code should not be compiled at all for some multilibs, define:
|
|
#
|
|
# softfp_wrap_start: text to put at the start of wrapper source files,
|
|
# output with echo
|
|
# e.g. '#ifndef __powerpc64__'
|
|
# softfp_wrap_end: text to put at the end of wrapper source files,
|
|
# e.g. '#endif'
|
|
#
|
|
# This is another temporary measure, and cannot be used together with
|
|
# softfp_compat.
|
|
|
|
softfp_float_funcs = add$(m)3 div$(m)3 eq$(m)2 ge$(m)2 le$(m)2 mul$(m)3 \
|
|
neg$(m)2 sub$(m)3 unord$(m)2
|
|
softfp_floatint_funcs = fix$(m)$(i) fixuns$(m)$(i) \
|
|
float$(i)$(m) floatun$(i)$(m)
|
|
|
|
softfp_func_list := \
|
|
$(foreach m,$(softfp_float_modes), \
|
|
$(softfp_float_funcs) \
|
|
$(foreach i,$(softfp_int_modes), \
|
|
$(softfp_floatint_funcs))) \
|
|
$(foreach e,$(softfp_extensions),extend$(e)2) \
|
|
$(foreach t,$(softfp_truncations),trunc$(t)2) \
|
|
$(softfp_extras)
|
|
|
|
ifeq ($(softfp_exclude_libgcc2),y)
|
|
# This list is taken from mklibgcc.in and doesn't presently allow for
|
|
# 64-bit targets where si should become di and di should become ti.
|
|
softfp_func_list := $(filter-out floatdidf floatdisf fixunsdfsi fixunssfsi \
|
|
fixunsdfdi fixdfdi fixunssfdi fixsfdi fixxfdi fixunsxfdi \
|
|
floatdixf fixunsxfsi fixtfdi fixunstfdi floatditf \
|
|
floatundidf floatundisf floatundixf floatunditf,$(softfp_func_list))
|
|
endif
|
|
|
|
ifeq ($(softfp_compat),y)
|
|
softfp_file_list := $(addsuffix .c,$(softfp_func_list))
|
|
|
|
ifeq ($(enable_shared),yes)
|
|
softfp_map_dep := libgcc.map.in
|
|
else
|
|
softfp_map_dep :=
|
|
endif
|
|
softfp_set_symver = echo "asm (\".symver $(1),$(1)@`$(AWK) -f $(srcdir)/find-symver.awk -v symbol=$(1) libgcc.map.in`\");" >> $@
|
|
$(softfp_file_list): $(softfp_map_dep)
|
|
echo '#ifdef SHARED' > $@
|
|
echo '#include "soft-fp/$@"' >> $@
|
|
ifeq ($(enable_shared),yes)
|
|
$(call softfp_set_symver,__$(*F))
|
|
if grep strong_alias $(srcdir)/soft-fp/$@ > /dev/null; then \
|
|
alias=`grep strong_alias $(srcdir)/soft-fp/$@ | sed -e 's/.*, *//' -e 's/).*//'`; \
|
|
$(call softfp_set_symver,$$alias); \
|
|
fi
|
|
endif
|
|
echo '#endif' >> $@
|
|
else
|
|
ifneq ($(softfp_wrap_start),)
|
|
softfp_file_list := $(addsuffix .c,$(softfp_func_list))
|
|
|
|
$(softfp_file_list):
|
|
echo $(softfp_wrap_start) > $@
|
|
echo '#include "soft-fp/$@"' >> $@
|
|
echo $(softfp_wrap_end) >> $@
|
|
else
|
|
softfp_file_list := \
|
|
$(addsuffix .c,$(addprefix $(srcdir)/soft-fp/,$(softfp_func_list)))
|
|
endif
|
|
endif
|
|
|
|
# Disable missing prototype and type limit warnings. The prototypes
|
|
# for the functions in the soft-fp files have not been brought across
|
|
# from glibc.
|
|
|
|
soft-fp-objects-base = $(basename $(notdir $(softfp_file_list)))
|
|
|
|
soft-fp-objects = $(addsuffix $(objext), $(soft-fp-objects-base)) \
|
|
$(addsuffix _s$(objext), $(soft-fp-objects-base))
|
|
|
|
$(soft-fp-objects) : INTERNAL_CFLAGS += -Wno-missing-prototypes -Wno-type-limits
|
|
|
|
LIB2ADD += $(softfp_file_list)
|
|
|
|
ifneq ($(softfp_exclude_libgcc2),y)
|
|
# Functions in libgcc2.c are excluded for each soft-float mode (a
|
|
# target may have both soft-float and hard-float modes), for the fixed
|
|
# list of integer modes (si and di) for which libgcc2.c defines any
|
|
# such functions. Depending on the target, the si and di symbols may
|
|
# in fact define di and ti functions.
|
|
|
|
LIB2FUNCS_EXCLUDE += \
|
|
$(addprefix _,$(foreach m,$(softfp_float_modes), \
|
|
$(foreach i,si di, \
|
|
$(softfp_floatint_funcs))))
|
|
endif
|