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# Copyright (C) 2006, 2007 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

# .

# 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)