t-avr revision 1.1.1.3 
1LIB1ASMSRC = avr/lib1funcs.S
2LIB1ASMFUNCS = \
3	_mulqi3 \
4	_mulhi3 \
5	_mulqihi3 _umulqihi3 \
6	_mulpsi3 \
7	_mulsi3 \
8	_udivmodqi4 \
9	_divmodqi4 \
10	_udivmodhi4 \
11	_divmodhi4 \
12	_divmodpsi4 _udivmodpsi4 \
13	_udivmodsi4 \
14	_divmodsi4 \
15	_negsi2 \
16	_exit \
17	_cleanup \
18	_tablejump2 \
19	_copy_data \
20	_clear_bss \
21	_ctors \
22	_dtors \
23	_ffssi2 \
24	_ffshi2 \
25	_loop_ffsqi2 \
26	_ctzsi2 \
27	_ctzhi2 \
28	_clzsi2 \
29	_clzhi2 \
30	_paritysi2 \
31	_parityhi2 \
32	_popcounthi2 \
33	_popcountsi2 \
34	_popcountqi2 \
35	_bswapsi2 \
36	_fmul _fmuls _fmulsu
37
38# The below functions either use registers that are not present
39# in tiny core, or use a different register conventions (don't save
40# callee saved regs, for example)
41# _mulhisi3 and variations - clobber R18, R19
42# All *di funcs - use regs < R16 or expect args in regs < R20
43# _prologue and _epilogue save registers < R16
44# _load ad _xload variations - expect lpm and elpm support
45# _movmemx - expects elpm/lpm
46
47ifneq ($(MULTIFLAGS),-mmcu=avrtiny)
48LIB1ASMFUNCS += \
49    _mulsqipsi3 \
50	_mulhisi3 \
51	_umulhisi3 \
52	_usmulhisi3 \
53	_muluhisi3 \
54	_mulshisi3 \
55    _muldi3 _muldi3_6 \
56    _mulsidi3 _umulsidi3 \
57	_divdi3 _udivdi3 \
58	_udivmod64 \
59	_negdi2 \
60	_prologue \
61	_epilogue \
62	_load_3 _load_4 \
63	_xload_1 _xload_2 _xload_3 _xload_4 \
64	_movmemx \
65	_clzdi2 \
66	_paritydi2 \
67	_popcountdi2 \
68	_bswapdi2 \
69	_ashldi3 _ashrdi3 _lshrdi3 _rotldi3 \
70	_adddi3 _adddi3_s8 _subdi3 \
71	_cmpdi2 _cmpdi2_s8
72endif
73
74# Fixed point routines in avr/lib1funcs-fixed.S
75ifneq ($(MULTIFLAGS),-mmcu=avrtiny)
76LIB1ASMFUNCS += \
77	_fractqqsf _fractuqqsf \
78	_fracthqsf _fractuhqsf _fracthasf _fractuhasf \
79	_fractsasf _fractusasf _fractsqsf _fractusqsf \
80	\
81	_fractsfqq _fractsfuqq \
82	_fractsfhq _fractsfuhq _fractsfha _fractsfuha \
83	_fractsfsq _fractsfusq _fractsfsa _fractsfusa \
84	_mulqq3 \
85	_mulhq3 _muluhq3 \
86	_mulha3 _muluha3 _muluha3_round \
87	_mulsa3 _mulusa3 \
88	_usmuluha3 _ssmulha3 \
89	_usmulusa3 _ssmulsa3 \
90	_divqq3 _udivuqq3 _divqq_helper \
91	_divhq3 _udivuhq3 \
92	_divha3 _udivuha3 \
93	_divsa3 _udivusa3 \
94	_clr_8 \
95	_ssneg_2 _ssneg_4 _ssneg_8 \
96	_ssabs_1 _ssabs_2 _ssabs_4 _ssabs_8 \
97	_ssadd_8 _sssub_8 \
98	_usadd_8 _ussub_8 \
99	_mask1 _ret \
100	_roundqq3 _rounduqq3 \
101	_round_s2 _round_u2 _round_2_const _addmask_2 \
102	_round_s4 _round_u4 _round_4_const _addmask_4 \
103	_round_x8 \
104	_rounddq3 _roundudq3 \
105	_roundda3 _rounduda3 \
106	_roundta3 _rounduta3
107endif
108
109LIB2FUNCS_EXCLUDE = \
110	_moddi3 _umoddi3 \
111	_clz \
112	_clrsbdi2 \
113
114
115# We do not have the DF type.
116# Most of the C functions in libgcc2 use almost all registers,
117# so use -mcall-prologues for smaller code size.
118HOST_LIBGCC2_CFLAGS += -DDF=SF -Dinhibit_libc -mcall-prologues -Os
119
120# Extra 16-bit integer functions.
121intfuncs16 = _absvXX2 _addvXX3 _subvXX3 _mulvXX3 _negvXX2 _clrsbXX2
122
123hiintfuncs16 = $(subst XX,hi,$(intfuncs16))
124siintfuncs16 = $(subst XX,si,$(intfuncs16))
125
126iter-items := $(hiintfuncs16)
127iter-labels := $(siintfuncs16)
128iter-sizes := $(patsubst %,2,$(siintfuncs16)) $(patsubst %,2,$(hiintfuncs16))
129
130
131include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/siditi-object.mk,$(iter-items))
132libgcc-objects += $(patsubst %,%$(objext),$(hiintfuncs16))
133
134ifeq ($(enable_shared),yes)
135libgcc-s-objects += $(patsubst %,%_s$(objext),$(hiintfuncs16))
136endif
137
138###
139
140conv_XY=$(conv)$(mode1)$(mode2)
141func_X=$(func)$(mode)
142
143# Compile C functions from lib2funcs.c and add them to libgcc.a.
144#
145# Some functions which are not performance.critical are more convenient
146# to implement in C than in assembler.  Most of them serve as implementation
147# for AVR-specific builtins in the case where the address of a builtin
148# function is taken or if there is no insn that implements the builtin.
149#
150# We don't use LIB2ADD because we want to iterate over the source for
151# different modes, fixed-point suffixes, etc.  See iter-labels and L_LABEL.
152# iter-label will get one more underscore in order to avoid too short
153# labels like -DLk and we use -DL_k instead.
154
155# Build roundFX functions from lib2funcs.c
156
157round_suffix :=  hr r lr uhr ur ulr  \
158		 hk k    uhk uk 
159round_funcs  := $(foreach func,_round,\
160		$(foreach mode,$(round_suffix),$(func_X)))
161
162iter-items  := $(round_funcs)
163iter-labels := $(round_suffix)
164iter-flags  := $(patsubst %,-DL_round,$(iter-items))
165
166include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
167
168libgcc-objects += $(patsubst %,%$(objext),$(round_funcs))
169
170# Build clrsbXX functions from lib2funcs.c
171
172clrsb_modes := qi di
173clrsb_funcs := $(foreach func,_clrsb,\
174	       $(foreach mode,$(clrsb_modes),$(func_X)))
175
176iter-items  := $(clrsb_funcs)
177iter-labels := $(clrsb_funcs)
178iter-flags  := $(patsubst %,-DL_clrsb,$(iter-items))
179
180include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
181
182libgcc-objects += $(patsubst %,%$(objext),$(clrsb_funcs))
183
184# Build signed countlsFX functions from lib2funcs.c
185
186countls_modes := qi hi si di
187countls_funcs := $(foreach func,_countls,\
188		 $(foreach mode,$(countls_modes),$(func_X)))
189
190iter-items  := $(countls_funcs)
191iter-labels := $(countls_modes)
192iter-flags  := $(patsubst %,-DL_countls,$(iter-items))
193
194include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
195
196libgcc-objects += $(patsubst %,%$(objext),$(countls_funcs))
197
198# Build unsigned countlsFX functions from lib2funcs.c
199
200countlsu_modes := qi hi si di
201countlsu_funcs := $(foreach func,_countlsu,\
202		  $(foreach mode,$(countlsu_modes),$(func_X)))
203
204iter-items  := $(countlsu_funcs)
205iter-labels := $(countlsu_modes)
206iter-flags  := $(patsubst %,-DL_countlsu,$(iter-items))
207
208include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
209
210libgcc-objects += $(patsubst %,%$(objext),$(countlsu_funcs))
211
212
213# Filter out supported conversions from fixed-bit.c
214# Also filter out TQ and UTQ.
215
216# Conversions supported by the compiler
217
218convf_modes =	 QI UQI QQ UQQ \
219		 HI UHI HQ UHQ HA UHA \
220		 SI USI SQ USQ SA USA \
221		 DI UDI DQ UDQ DA UDA \
222		 TI UTI TQ UTQ TA UTA
223
224LIB2FUNCS_EXCLUDE += \
225	$(foreach conv,_fract _fractuns,\
226	$(foreach mode1,$(convf_modes),\
227	$(foreach mode2,$(convf_modes),$(conv_XY))))
228
229# Conversions supported by lib1funcs-fixed.S
230
231conv_to_sf_modes   = QQ UQQ HQ UHQ HA UHA SQ USQ SA USA
232conv_from_sf_modes = QQ UQQ HQ UHQ HA UHA        SA USA
233
234LIB2FUNCS_EXCLUDE += \
235	$(foreach conv,_fract, \
236	$(foreach mode1,$(conv_to_sf_modes), \
237	$(foreach mode2,SF,$(conv_XY))))
238
239LIB2FUNCS_EXCLUDE += \
240	$(foreach conv,_fract,\
241	$(foreach mode1,SF,\
242	$(foreach mode2,$(conv_from_sf_modes),$(conv_XY))))
243
244# Arithmetik supported by the compiler
245
246allfix_modes = QQ UQQ HQ UHQ HA UHA SQ USQ SA USA DA UDA DQ UDQ TQ UTQ TA UTA
247
248LIB2FUNCS_EXCLUDE += \
249	$(foreach func,_add _sub,\
250	$(foreach mode,$(allfix_modes),$(func_X)))
251
252LIB2FUNCS_EXCLUDE += \
253	$(foreach func,_lshr _ashl _ashr _cmp,\
254	$(foreach mode,$(allfix_modes),$(func_X)))
255
256
257usat_modes = UQQ UHQ UHA USQ USA UDQ UDA UTQ UTA
258ssat_modes =  QQ  HQ  HA  SQ  SA  DQ  DA  TQ  TA
259
260LIB2FUNCS_EXCLUDE += \
261	$(foreach func,_ssadd _sssub _ssneg _ssabs,\
262	$(foreach mode,$(ssat_modes),$(func_X)))
263
264LIB2FUNCS_EXCLUDE += \
265	$(foreach func,_usadd _ussub _usneg,\
266	$(foreach mode,$(usat_modes),$(func_X)))
267
268
269smul_modes =  QQ  HQ  HA  SA
270umul_modes = UQQ UHQ UHA USA
271sdiv_modes =  QQ  HQ  HA  SA
272udiv_modes = UQQ UHQ UHA USA
273
274LIB2FUNCS_EXCLUDE += \
275	$(foreach func,_mul,\
276	$(foreach mode,$(smul_modes) $(umul_modes),$(func_X)))
277
278LIB2FUNCS_EXCLUDE += \
279	$(foreach func,_div,\
280	$(foreach mode,$(sdiv_modes) $(udiv_modes),$(func_X)))
281
282
283ssmul_modes =  HA  SA
284usmul_modes = UHA USA
285
286LIB2FUNCS_EXCLUDE += \
287	$(foreach func,_usmul,\
288	$(foreach mode,$(usmul_modes),$(func_X)))
289
290LIB2FUNCS_EXCLUDE += \
291	$(foreach func,_ssmul,\
292	$(foreach mode,$(ssmul_modes),$(func_X)))
293