Mercurial > hg > CbC > CbC_gcc
comparison gcc/config/soft-fp/t-softfp @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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1 # Copyright (C) 2006, 2007 Free Software Foundation, Inc. | |
2 | |
3 # This file is part of GCC. | |
4 | |
5 # GCC is free software; you can redistribute it and/or modify | |
6 # it under the terms of the GNU General Public License as published by | |
7 # the Free Software Foundation; either version 3, or (at your option) | |
8 # any later version. | |
9 | |
10 # GCC is distributed in the hope that it will be useful, | |
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 # GNU General Public License for more details. | |
14 | |
15 # You should have received a copy of the GNU General Public License | |
16 # along with GCC; see the file COPYING3. If not see | |
17 # <http://www.gnu.org/licenses/>. | |
18 | |
19 # Targets using soft-fp should define the following variables: | |
20 # | |
21 # softfp_float_modes: a list of soft-float floating-point modes, | |
22 # e.g. sf df | |
23 # softfp_int_modes: a list of integer modes for which to define conversions, | |
24 # e.g. si di | |
25 # softfp_extensions: a list of extensions between floating-point modes, | |
26 # e.g. sfdf | |
27 # softfp_truncations: a list of truncations between floating-point modes, | |
28 # e.g. dfsf | |
29 # softfp_machine_header: the target sfp-machine.h file (relative to config/), | |
30 # e.g. rs6000/sfp-machine.h | |
31 # | |
32 # Extensions and truncations should include those where only one mode | |
33 # is a soft-float mode; for example, sftf where sf is hard-float and | |
34 # tf is soft-float. | |
35 # | |
36 # If the libgcc2.c functions should not be replaced, also define: | |
37 # | |
38 # softfp_exclude_libgcc2 := y | |
39 # | |
40 # Avoiding replacing the libgcc2.c functions is a temporary measure | |
41 # for targets with both hard-float and soft-float multilibs, since | |
42 # these variables apply for all multilibs. With toplevel libgcc, | |
43 # soft-fp can be used conditionally on the multilib instead. | |
44 # | |
45 # If the code should not be compiled at all for some multilibs, define: | |
46 # | |
47 # softfp_wrap_start: text to put at the start of wrapper source files, | |
48 # output with echo | |
49 # e.g. '#ifndef __powerpc64__' | |
50 # softfp_wrap_end: text to put at the end of wrapper source files, | |
51 # e.g. '#endif' | |
52 # | |
53 # This is another temporary measure. | |
54 | |
55 softfp_float_funcs = add$(m)3 div$(m)3 eq$(m)2 ge$(m)2 le$(m)2 mul$(m)3 \ | |
56 neg$(m)2 sub$(m)3 unord$(m)2 | |
57 softfp_floatint_funcs = fix$(m)$(i) fixuns$(m)$(i) \ | |
58 float$(i)$(m) floatun$(i)$(m) | |
59 | |
60 softfp_func_list := \ | |
61 $(foreach m,$(softfp_float_modes), \ | |
62 $(softfp_float_funcs) \ | |
63 $(foreach i,$(softfp_int_modes), \ | |
64 $(softfp_floatint_funcs))) \ | |
65 $(foreach e,$(softfp_extensions),extend$(e)2) \ | |
66 $(foreach t,$(softfp_truncations),trunc$(t)2) | |
67 | |
68 ifeq ($(softfp_exclude_libgcc2),y) | |
69 # This list is taken from mklibgcc.in and doesn't presently allow for | |
70 # 64-bit targets where si should become di and di should become ti. | |
71 softfp_func_list := $(filter-out floatdidf floatdisf fixunsdfsi fixunssfsi \ | |
72 fixunsdfdi fixdfdi fixunssfdi fixsfdi fixxfdi fixunsxfdi \ | |
73 floatdixf fixunsxfsi fixtfdi fixunstfdi floatditf \ | |
74 floatundidf floatundisf floatundixf floatunditf,$(softfp_func_list)) | |
75 endif | |
76 | |
77 ifeq ($(softfp_wrap_start),) | |
78 softfp_file_list := \ | |
79 $(addsuffix .c,$(addprefix $(srcdir)/config/soft-fp/,$(softfp_func_list))) | |
80 else | |
81 softfp_file_list := $(addsuffix .c,$(softfp_func_list)) | |
82 | |
83 $(softfp_file_list): | |
84 echo $(softfp_wrap_start) > $@ | |
85 echo '#include "config/soft-fp/$@"' >> $@ | |
86 echo $(softfp_wrap_end) >> $@ | |
87 endif | |
88 | |
89 LIB2FUNCS_EXTRA += $(softfp_file_list) | |
90 | |
91 ifneq ($(softfp_exclude_libgcc2),y) | |
92 # Functions in libgcc2.c are excluded for each soft-float mode (a | |
93 # target may have both soft-float and hard-float modes), for the fixed | |
94 # list of integer modes (si and di) for which libgcc2.c defines any | |
95 # such functions. Depending on the target, the si and di symbols may | |
96 # in fact define di and ti functions. | |
97 | |
98 LIB2FUNCS_EXCLUDE += \ | |
99 $(addprefix _,$(foreach m,$(softfp_float_modes), \ | |
100 $(foreach i,si di, \ | |
101 $(softfp_floatint_funcs)))) | |
102 endif | |
103 | |
104 SFP_MACHINE := sfp-machine.h | |
105 | |
106 $(SFP_MACHINE): $(srcdir)/config/$(softfp_machine_header) | |
107 cp $(srcdir)/config/$(softfp_machine_header) $(SFP_MACHINE) |