t-softfp revision 169689
1169689Skan# Copyright (C) 2006 Free Software Foundation, Inc. 2169689Skan 3169689Skan# This file is part of GCC. 4169689Skan 5169689Skan# GCC is free software; you can redistribute it and/or modify 6169689Skan# it under the terms of the GNU General Public License as published by 7169689Skan# the Free Software Foundation; either version 2, or (at your option) 8169689Skan# any later version. 9169689Skan 10169689Skan# GCC is distributed in the hope that it will be useful, 11169689Skan# but WITHOUT ANY WARRANTY; without even the implied warranty of 12169689Skan# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13169689Skan# GNU General Public License for more details. 14169689Skan 15169689Skan# You should have received a copy of the GNU General Public License 16169689Skan# along with GCC; see the file COPYING. If not, write to 17169689Skan# the Free Software Foundation, 51 Franklin Street, Fifth Floor, 18169689Skan# Boston MA 02110-1301, USA. 19169689Skan 20169689Skan# Targets using soft-fp should define the following variables: 21169689Skan# 22169689Skan# softfp_float_modes: a list of soft-float floating-point modes, 23169689Skan# e.g. sf df 24169689Skan# softfp_int_modes: a list of integer modes for which to define conversions, 25169689Skan# e.g. si di 26169689Skan# softfp_extensions: a list of extensions between floating-point modes, 27169689Skan# e.g. sfdf 28169689Skan# softfp_truncations: a list of truncations between floating-point modes, 29169689Skan# e.g. dfsf 30169689Skan# softfp_machine_header: the target sfp-machine.h file (relative to config/), 31169689Skan# e.g. rs6000/sfp-machine.h 32169689Skan# 33169689Skan# Extensions and truncations should include those where only one mode 34169689Skan# is a soft-float mode; for example, sftf where sf is hard-float and 35169689Skan# tf is soft-float. 36169689Skan# 37169689Skan# If the libgcc2.c functions should not be replaced, also define: 38169689Skan# 39169689Skan# softfp_exclude_libgcc2 := y 40169689Skan# 41169689Skan# Avoiding replacing the libgcc2.c functions is a temporary measure 42169689Skan# for targets with both hard-float and soft-float multilibs, since 43169689Skan# these variables apply for all multilibs. With toplevel libgcc, 44169689Skan# soft-fp can be used conditionally on the multilib instead. 45169689Skan# 46169689Skan# If the code should not be compiled at all for some multilibs, define: 47169689Skan# 48169689Skan# softfp_wrap_start: text to put at the start of wrapper source files, 49169689Skan# output with echo 50169689Skan# e.g. '#ifndef __powerpc64__' 51169689Skan# softfp_wrap_end: text to put at the end of wrapper source files, 52169689Skan# e.g. '#endif' 53169689Skan# 54169689Skan# This is another temporary measure. 55169689Skan 56169689Skansoftfp_float_funcs = add$(m)3 div$(m)3 eq$(m)2 ge$(m)2 le$(m)2 mul$(m)3 \ 57169689Skan neg$(m)2 sub$(m)3 unord$(m)2 58169689Skansoftfp_floatint_funcs = fix$(m)$(i) fixuns$(m)$(i) \ 59169689Skan float$(i)$(m) floatun$(i)$(m) 60169689Skan 61169689Skansoftfp_func_list := \ 62169689Skan $(foreach m,$(softfp_float_modes), \ 63169689Skan $(softfp_float_funcs) \ 64169689Skan $(foreach i,$(softfp_int_modes), \ 65169689Skan $(softfp_floatint_funcs))) \ 66169689Skan $(foreach e,$(softfp_extensions),extend$(e)2) \ 67169689Skan $(foreach t,$(softfp_truncations),trunc$(t)2) 68169689Skan 69169689Skanifeq ($(softfp_exclude_libgcc2),y) 70169689Skan# This list is taken from mklibgcc.in and doesn't presently allow for 71169689Skan# 64-bit targets where si should become di and di should become ti. 72169689Skansoftfp_func_list := $(filter-out floatdidf floatdisf fixunsdfsi fixunssfsi \ 73169689Skan fixunsdfdi fixdfdi fixunssfdi fixsfdi fixxfdi fixunsxfdi \ 74169689Skan floatdixf fixunsxfsi fixtfdi fixunstfdi floatditf \ 75169689Skan floatundidf floatundisf floatundixf floatunditf,$(softfp_func_list)) 76169689Skanendif 77169689Skan 78169689Skanifeq ($(softfp_wrap_start),) 79169689Skansoftfp_file_list := \ 80169689Skan $(addsuffix .c,$(addprefix $(srcdir)/config/soft-fp/,$(softfp_func_list))) 81169689Skanelse 82169689Skansoftfp_file_list := $(addsuffix .c,$(softfp_func_list)) 83169689Skan 84169689Skan$(softfp_file_list): 85169689Skan echo $(softfp_wrap_start) > $@ 86169689Skan echo '#include "config/soft-fp/$@"' >> $@ 87169689Skan echo $(softfp_wrap_end) >> $@ 88169689Skanendif 89169689Skan 90169689SkanLIB2FUNCS_EXTRA += $(softfp_file_list) 91169689Skan 92169689Skanifneq ($(softfp_exclude_libgcc2),y) 93169689Skan# Functions in libgcc2.c are excluded for each soft-float mode (a 94169689Skan# target may have both soft-float and hard-float modes), for the fixed 95169689Skan# list of integer modes (si and di) for which libgcc2.c defines any 96169689Skan# such functions. Depending on the target, the si and di symbols may 97169689Skan# in fact define di and ti functions. 98169689Skan 99169689SkanLIB2FUNCS_EXCLUDE += \ 100169689Skan $(addprefix _,$(foreach m,$(softfp_float_modes), \ 101169689Skan $(foreach i,si di, \ 102169689Skan $(softfp_floatint_funcs)))) 103169689Skanendif 104169689Skan 105169689SkanSFP_MACHINE := sfp-machine.h 106169689Skan 107169689Skan$(SFP_MACHINE): $(srcdir)/config/$(softfp_machine_header) 108169689Skan cp $(srcdir)/config/$(softfp_machine_header) $(SFP_MACHINE) 109