xref: /dflybsd-src/contrib/gcc-4.7/libgcc/config/t-softfp (revision 04febcfb30580676d3e95f58a16c5137ee478b32)
1*e4b17023SJohn Marino# Copyright (C) 2006, 2007, 2011 Free Software Foundation, Inc.
2*e4b17023SJohn Marino
3*e4b17023SJohn Marino# This file is part of GCC.
4*e4b17023SJohn Marino
5*e4b17023SJohn Marino# GCC is free software; you can redistribute it and/or modify
6*e4b17023SJohn Marino# it under the terms of the GNU General Public License as published by
7*e4b17023SJohn Marino# the Free Software Foundation; either version 3, or (at your option)
8*e4b17023SJohn Marino# any later version.
9*e4b17023SJohn Marino
10*e4b17023SJohn Marino# GCC is distributed in the hope that it will be useful,
11*e4b17023SJohn Marino# but WITHOUT ANY WARRANTY; without even the implied warranty of
12*e4b17023SJohn Marino# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13*e4b17023SJohn Marino# GNU General Public License for more details.
14*e4b17023SJohn Marino
15*e4b17023SJohn Marino# You should have received a copy of the GNU General Public License
16*e4b17023SJohn Marino# along with GCC; see the file COPYING3.  If not see
17*e4b17023SJohn Marino# <http://www.gnu.org/licenses/>.
18*e4b17023SJohn Marino
19*e4b17023SJohn Marino# Targets using soft-fp should define the following variables:
20*e4b17023SJohn Marino#
21*e4b17023SJohn Marino# softfp_float_modes: a list of soft-float floating-point modes,
22*e4b17023SJohn Marino#                     e.g. sf df
23*e4b17023SJohn Marino# softfp_int_modes: a list of integer modes for which to define conversions,
24*e4b17023SJohn Marino#                   e.g. si di
25*e4b17023SJohn Marino# softfp_extensions: a list of extensions between floating-point modes,
26*e4b17023SJohn Marino#                    e.g. sfdf
27*e4b17023SJohn Marino# softfp_truncations: a list of truncations between floating-point modes,
28*e4b17023SJohn Marino#                     e.g. dfsf
29*e4b17023SJohn Marino#
30*e4b17023SJohn Marino# Extensions and truncations should include those where only one mode
31*e4b17023SJohn Marino# is a soft-float mode; for example, sftf where sf is hard-float and
32*e4b17023SJohn Marino# tf is soft-float.
33*e4b17023SJohn Marino#
34*e4b17023SJohn Marino# If the libgcc2.c functions should not be replaced, also define:
35*e4b17023SJohn Marino#
36*e4b17023SJohn Marino# softfp_exclude_libgcc2 := y
37*e4b17023SJohn Marino#
38*e4b17023SJohn Marino# Avoiding replacing the libgcc2.c functions is a temporary measure
39*e4b17023SJohn Marino# for targets with both hard-float and soft-float multilibs, since
40*e4b17023SJohn Marino# these variables apply for all multilibs.  With toplevel libgcc,
41*e4b17023SJohn Marino# soft-fp can be used conditionally on the multilib instead.
42*e4b17023SJohn Marino#
43*e4b17023SJohn Marino# If the code should not be compiled at all for some multilibs, define:
44*e4b17023SJohn Marino#
45*e4b17023SJohn Marino# softfp_wrap_start: text to put at the start of wrapper source files,
46*e4b17023SJohn Marino#                    output with echo
47*e4b17023SJohn Marino#                    e.g. '#ifndef __powerpc64__'
48*e4b17023SJohn Marino# softfp_wrap_end: text to put at the end of wrapper source files,
49*e4b17023SJohn Marino#                  e.g. '#endif'
50*e4b17023SJohn Marino#
51*e4b17023SJohn Marino# This is another temporary measure.
52*e4b17023SJohn Marino
53*e4b17023SJohn Marinosoftfp_float_funcs = add$(m)3 div$(m)3 eq$(m)2 ge$(m)2 le$(m)2 mul$(m)3 \
54*e4b17023SJohn Marino  neg$(m)2 sub$(m)3 unord$(m)2
55*e4b17023SJohn Marinosoftfp_floatint_funcs = fix$(m)$(i) fixuns$(m)$(i) \
56*e4b17023SJohn Marino  float$(i)$(m) floatun$(i)$(m)
57*e4b17023SJohn Marino
58*e4b17023SJohn Marinosoftfp_func_list := \
59*e4b17023SJohn Marino  $(foreach m,$(softfp_float_modes), \
60*e4b17023SJohn Marino              $(softfp_float_funcs) \
61*e4b17023SJohn Marino              $(foreach i,$(softfp_int_modes), \
62*e4b17023SJohn Marino                          $(softfp_floatint_funcs))) \
63*e4b17023SJohn Marino  $(foreach e,$(softfp_extensions),extend$(e)2) \
64*e4b17023SJohn Marino  $(foreach t,$(softfp_truncations),trunc$(t)2)
65*e4b17023SJohn Marino
66*e4b17023SJohn Marinoifeq ($(softfp_exclude_libgcc2),y)
67*e4b17023SJohn Marino# This list is taken from mklibgcc.in and doesn't presently allow for
68*e4b17023SJohn Marino# 64-bit targets where si should become di and di should become ti.
69*e4b17023SJohn Marinosoftfp_func_list := $(filter-out floatdidf floatdisf fixunsdfsi fixunssfsi \
70*e4b17023SJohn Marino  fixunsdfdi fixdfdi fixunssfdi fixsfdi fixxfdi fixunsxfdi \
71*e4b17023SJohn Marino  floatdixf fixunsxfsi fixtfdi fixunstfdi floatditf \
72*e4b17023SJohn Marino  floatundidf floatundisf floatundixf floatunditf,$(softfp_func_list))
73*e4b17023SJohn Marinoendif
74*e4b17023SJohn Marino
75*e4b17023SJohn Marinoifeq ($(softfp_wrap_start),)
76*e4b17023SJohn Marinosoftfp_file_list := \
77*e4b17023SJohn Marino  $(addsuffix .c,$(addprefix $(srcdir)/soft-fp/,$(softfp_func_list)))
78*e4b17023SJohn Marinoelse
79*e4b17023SJohn Marinosoftfp_file_list := $(addsuffix .c,$(softfp_func_list))
80*e4b17023SJohn Marino
81*e4b17023SJohn Marino$(softfp_file_list):
82*e4b17023SJohn Marino	echo $(softfp_wrap_start) > $@
83*e4b17023SJohn Marino	echo '#include "soft-fp/$@"' >> $@
84*e4b17023SJohn Marino	echo $(softfp_wrap_end) >> $@
85*e4b17023SJohn Marinoendif
86*e4b17023SJohn Marino
87*e4b17023SJohn Marino# Disable missing prototype and type limit warnings.  The prototypes
88*e4b17023SJohn Marino# for the functions in the soft-fp files have not been brought across
89*e4b17023SJohn Marino# from glibc.
90*e4b17023SJohn Marino
91*e4b17023SJohn Marinosoft-fp-objects = $(addsuffix $(objext), $(softfp_file_list)) \
92*e4b17023SJohn Marino  $(addsuffix _s$(objext), $(softfp_file_list))
93*e4b17023SJohn Marino
94*e4b17023SJohn Marino$(soft-fp-objects) : INTERNAL_CFLAGS += -Wno-missing-prototypes -Wno-type-limits
95*e4b17023SJohn Marino
96*e4b17023SJohn MarinoLIB2ADD += $(softfp_file_list)
97*e4b17023SJohn Marino
98*e4b17023SJohn Marinoifneq ($(softfp_exclude_libgcc2),y)
99*e4b17023SJohn Marino# Functions in libgcc2.c are excluded for each soft-float mode (a
100*e4b17023SJohn Marino# target may have both soft-float and hard-float modes), for the fixed
101*e4b17023SJohn Marino# list of integer modes (si and di) for which libgcc2.c defines any
102*e4b17023SJohn Marino# such functions.  Depending on the target, the si and di symbols may
103*e4b17023SJohn Marino# in fact define di and ti functions.
104*e4b17023SJohn Marino
105*e4b17023SJohn MarinoLIB2FUNCS_EXCLUDE += \
106*e4b17023SJohn Marino  $(addprefix _,$(foreach m,$(softfp_float_modes), \
107*e4b17023SJohn Marino                            $(foreach i,si di, \
108*e4b17023SJohn Marino                                        $(softfp_floatint_funcs))))
109*e4b17023SJohn Marinoendif
110