| # Copyright (C) 2006 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 2, 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 COPYING. If not, write to |
| # the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
| # Boston MA 02110-1301, USA. |
| |
| # 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 |
| # softfp_machine_header: the target sfp-machine.h file (relative to config/), |
| # e.g. rs6000/sfp-machine.h |
| # |
| # 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 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. |
| |
| 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$(t)2) |
| |
| ifeq ($(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_wrap_start),) |
| softfp_file_list := \ |
| $(addsuffix .c,$(addprefix $(srcdir)/config/soft-fp/,$(softfp_func_list))) |
| else |
| softfp_file_list := $(addsuffix .c,$(softfp_func_list)) |
| |
| $(softfp_file_list): |
| echo $(softfp_wrap_start) > $@ |
| echo '#include "config/soft-fp/$@"' >> $@ |
| echo $(softfp_wrap_end) >> $@ |
| endif |
| |
| LIB2FUNCS_EXTRA += $(softfp_file_list) |
| |
| ifneq ($(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 |
| |
| SFP_MACHINE := sfp-machine.h |
| |
| $(SFP_MACHINE): $(srcdir)/config/$(softfp_machine_header) |
| cp $(srcdir)/config/$(softfp_machine_header) $(SFP_MACHINE) |