t-softfp revision 1.3
1 1.3 mrg # Copyright (C) 2006-2013 Free Software Foundation, Inc. 2 1.3 mrg 3 1.3 mrg # This file is part of GCC. 4 1.3 mrg 5 1.3 mrg # GCC is free software; you can redistribute it and/or modify 6 1.3 mrg # it under the terms of the GNU General Public License as published by 7 1.3 mrg # the Free Software Foundation; either version 3, or (at your option) 8 1.3 mrg # any later version. 9 1.3 mrg 10 1.3 mrg # GCC is distributed in the hope that it will be useful, 11 1.3 mrg # but WITHOUT ANY WARRANTY; without even the implied warranty of 12 1.3 mrg # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 1.3 mrg # GNU General Public License for more details. 14 1.3 mrg 15 1.3 mrg # You should have received a copy of the GNU General Public License 16 1.3 mrg # along with GCC; see the file COPYING3. If not see 17 1.3 mrg # <http://www.gnu.org/licenses/>. 18 1.3 mrg 19 1.3 mrg # Targets using soft-fp should define the following variables: 20 1.3 mrg # 21 1.3 mrg # softfp_float_modes: a list of soft-float floating-point modes, 22 1.3 mrg # e.g. sf df 23 1.3 mrg # softfp_int_modes: a list of integer modes for which to define conversions, 24 1.3 mrg # e.g. si di 25 1.3 mrg # softfp_extensions: a list of extensions between floating-point modes, 26 1.3 mrg # e.g. sfdf 27 1.3 mrg # softfp_truncations: a list of truncations between floating-point modes, 28 1.3 mrg # e.g. dfsf 29 1.3 mrg # 30 1.3 mrg # Extensions and truncations should include those where only one mode 31 1.3 mrg # is a soft-float mode; for example, sftf where sf is hard-float and 32 1.3 mrg # tf is soft-float. 33 1.3 mrg # 34 1.3 mrg # If the libgcc2.c functions should not be replaced, also define: 35 1.3 mrg # 36 1.3 mrg # softfp_exclude_libgcc2 := y 37 1.3 mrg # 38 1.3 mrg # Avoiding replacing the libgcc2.c functions is a temporary measure 39 1.3 mrg # for targets with both hard-float and soft-float multilibs, since 40 1.3 mrg # these variables apply for all multilibs. With toplevel libgcc, 41 1.3 mrg # soft-fp can be used conditionally on the multilib instead. 42 1.3 mrg # 43 1.3 mrg # If the code should not be compiled at all for some multilibs, define: 44 1.3 mrg # 45 1.3 mrg # softfp_wrap_start: text to put at the start of wrapper source files, 46 1.3 mrg # output with echo 47 1.3 mrg # e.g. '#ifndef __powerpc64__' 48 1.3 mrg # softfp_wrap_end: text to put at the end of wrapper source files, 49 1.3 mrg # e.g. '#endif' 50 1.3 mrg # 51 1.3 mrg # This is another temporary measure. 52 1.3 mrg 53 1.3 mrg softfp_float_funcs = add$(m)3 div$(m)3 eq$(m)2 ge$(m)2 le$(m)2 mul$(m)3 \ 54 1.3 mrg neg$(m)2 sub$(m)3 unord$(m)2 55 1.3 mrg softfp_floatint_funcs = fix$(m)$(i) fixuns$(m)$(i) \ 56 1.3 mrg float$(i)$(m) floatun$(i)$(m) 57 1.3 mrg 58 1.3 mrg softfp_func_list := \ 59 1.3 mrg $(foreach m,$(softfp_float_modes), \ 60 1.3 mrg $(softfp_float_funcs) \ 61 1.3 mrg $(foreach i,$(softfp_int_modes), \ 62 1.3 mrg $(softfp_floatint_funcs))) \ 63 1.3 mrg $(foreach e,$(softfp_extensions),extend$(e)2) \ 64 1.3 mrg $(foreach t,$(softfp_truncations),trunc$(t)2) 65 1.3 mrg 66 1.3 mrg ifeq ($(softfp_exclude_libgcc2),y) 67 1.3 mrg # This list is taken from mklibgcc.in and doesn't presently allow for 68 1.3 mrg # 64-bit targets where si should become di and di should become ti. 69 1.3 mrg softfp_func_list := $(filter-out floatdidf floatdisf fixunsdfsi fixunssfsi \ 70 1.3 mrg fixunsdfdi fixdfdi fixunssfdi fixsfdi fixxfdi fixunsxfdi \ 71 1.3 mrg floatdixf fixunsxfsi fixtfdi fixunstfdi floatditf \ 72 1.3 mrg floatundidf floatundisf floatundixf floatunditf,$(softfp_func_list)) 73 1.3 mrg endif 74 1.3 mrg 75 1.3 mrg ifeq ($(softfp_wrap_start),) 76 1.3 mrg softfp_file_list := \ 77 1.3 mrg $(addsuffix .c,$(addprefix $(srcdir)/soft-fp/,$(softfp_func_list))) 78 1.3 mrg else 79 1.3 mrg softfp_file_list := $(addsuffix .c,$(softfp_func_list)) 80 1.3 mrg 81 1.3 mrg $(softfp_file_list): 82 1.3 mrg echo $(softfp_wrap_start) > $@ 83 1.3 mrg echo '#include "soft-fp/$@"' >> $@ 84 1.3 mrg echo $(softfp_wrap_end) >> $@ 85 1.3 mrg endif 86 1.3 mrg 87 1.1 mrg # Disable missing prototype and type limit warnings. The prototypes 88 1.1 mrg # for the functions in the soft-fp files have not been brought across 89 1.1 mrg # from glibc. 90 1.1 mrg 91 1.3 mrg soft-fp-objects = $(addsuffix $(objext), $(softfp_file_list)) \ 92 1.3 mrg $(addsuffix _s$(objext), $(softfp_file_list)) 93 1.1 mrg 94 1.3 mrg $(soft-fp-objects) : INTERNAL_CFLAGS += -Wno-missing-prototypes -Wno-type-limits 95 1.3 mrg 96 1.3 mrg LIB2ADD += $(softfp_file_list) 97 1.1 mrg 98 1.3 mrg ifneq ($(softfp_exclude_libgcc2),y) 99 1.3 mrg # Functions in libgcc2.c are excluded for each soft-float mode (a 100 1.3 mrg # target may have both soft-float and hard-float modes), for the fixed 101 1.3 mrg # list of integer modes (si and di) for which libgcc2.c defines any 102 1.3 mrg # such functions. Depending on the target, the si and di symbols may 103 1.3 mrg # in fact define di and ti functions. 104 1.1 mrg 105 1.3 mrg LIB2FUNCS_EXCLUDE += \ 106 1.3 mrg $(addprefix _,$(foreach m,$(softfp_float_modes), \ 107 1.3 mrg $(foreach i,si di, \ 108 1.3 mrg $(softfp_floatint_funcs)))) 109 1.3 mrg endif 110
Indexes created Mon Oct 26 00:26:21 UTC 2026