1 LIB1ASMSRC = avr/lib1funcs.S
17 _divmodpsi4 _udivmodpsi4 \
22 _mulsidi3 _umulsidi3 \
31 _xload_1 _xload_2 _xload_3 _xload_4 \
54 _ashldi3 _ashrdi3 _lshrdi3 _rotldi3 \
55 _adddi3 _adddi3_s8 _subdi3 \
59 # Fixed point routines in avr/lib1funcs-fixed.S
61 _fractqqsf _fractuqqsf \
62 _fracthqsf _fractuhqsf _fracthasf _fractuhasf \
63 _fractsasf _fractusasf _fractsqsf _fractusqsf \
65 _fractsfqq _fractsfuqq \
66 _fractsfhq _fractsfuhq _fractsfha _fractsfuha \
67 _fractsfsq _fractsfusq _fractsfsa _fractsfusa \
70 _mulha3 _muluha3 _muluha3_round \
72 _usmuluha3 _ssmulha3 \
73 _usmulusa3 _ssmulsa3 \
74 _divqq3 _udivuqq3 _divqq_helper \
79 _ssneg_2 _ssneg_4 _ssneg_8 \
80 _ssabs_1 _ssabs_2 _ssabs_4 _ssabs_8 \
84 _roundqq3 _rounduqq3 \
85 _round_s2 _round_u2 _round_2_const _addmask_2 \
86 _round_s4 _round_u4 _round_4_const _addmask_4 \
88 _rounddq3 _roundudq3 \
89 _roundda3 _rounduda3 \
90 _roundta3 _rounduta3 \
99 # We do not have the DF type.
100 # Most of the C functions in libgcc2 use almost all registers,
101 # so use -mcall-prologues for smaller code size.
102 HOST_LIBGCC2_CFLAGS += -DDF=SF -Dinhibit_libc -mcall-prologues -Os
104 # Extra 16-bit integer functions.
105 intfuncs16 = _absvXX2 _addvXX3 _subvXX3 _mulvXX3 _negvXX2 _clrsbXX2
107 hiintfuncs16 = $(subst XX,hi,$(intfuncs16))
108 siintfuncs16 = $(subst XX,si,$(intfuncs16))
110 iter-items := $(hiintfuncs16)
111 iter-labels := $(siintfuncs16)
112 iter-sizes := $(patsubst %,2,$(siintfuncs16)) $(patsubst %,2,$(hiintfuncs16))
115 include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/siditi-object.mk,$(iter-items))
116 libgcc-objects += $(patsubst %,%$(objext),$(hiintfuncs16))
118 ifeq ($(enable_shared),yes)
119 libgcc-s-objects += $(patsubst %,%_s$(objext),$(hiintfuncs16))
124 conv_XY=$(conv)$(mode1)$(mode2)
125 func_X=$(func)$(mode)
127 # Compile C functions from lib2funcs.c and add them to libgcc.a.
129 # Some functions which are not performance.critical are more convenient
130 # to implement in C than in assembler. Most of them serve as implementation
131 # for AVR-specific builtins in the case where the address of a builtin
132 # function is taken or if there is no insn that implements the builtin.
134 # We don't use LIB2ADD because we want to iterate over the source for
135 # different modes, fixed-point suffixes, etc. See iter-labels and L_LABEL.
136 # iter-label will get one more underscore in order to avoid too short
137 # labels like -DLk and we use -DL_k instead.
139 # Build roundFX functions from lib2funcs.c
141 round_suffix := hr r lr uhr ur ulr \
143 round_funcs := $(foreach func,_round,\
144 $(foreach mode,$(round_suffix),$(func_X)))
146 iter-items := $(round_funcs)
147 iter-labels := $(round_suffix)
148 iter-flags := $(patsubst %,-DL_round,$(iter-items))
150 include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
152 libgcc-objects += $(patsubst %,%$(objext),$(round_funcs))
154 # Build clrsbXX functions from lib2funcs.c
157 clrsb_funcs := $(foreach func,_clrsb,\
158 $(foreach mode,$(clrsb_modes),$(func_X)))
160 iter-items := $(clrsb_funcs)
161 iter-labels := $(clrsb_funcs)
162 iter-flags := $(patsubst %,-DL_clrsb,$(iter-items))
164 include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
166 libgcc-objects += $(patsubst %,%$(objext),$(clrsb_funcs))
168 # Build signed countlsFX functions from lib2funcs.c
170 countls_modes := qi hi si di
171 countls_funcs := $(foreach func,_countls,\
172 $(foreach mode,$(countls_modes),$(func_X)))
174 iter-items := $(countls_funcs)
175 iter-labels := $(countls_modes)
176 iter-flags := $(patsubst %,-DL_countls,$(iter-items))
178 include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
180 libgcc-objects += $(patsubst %,%$(objext),$(countls_funcs))
182 # Build unsigned countlsFX functions from lib2funcs.c
184 countlsu_modes := qi hi si di
185 countlsu_funcs := $(foreach func,_countlsu,\
186 $(foreach mode,$(countlsu_modes),$(func_X)))
188 iter-items := $(countlsu_funcs)
189 iter-labels := $(countlsu_modes)
190 iter-flags := $(patsubst %,-DL_countlsu,$(iter-items))
192 include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
194 libgcc-objects += $(patsubst %,%$(objext),$(countlsu_funcs))
197 # Filter out supported conversions from fixed-bit.c
198 # Also filter out TQ and UTQ.
200 # Conversions supported by the compiler
202 convf_modes = QI UQI QQ UQQ \
203 HI UHI HQ UHQ HA UHA \
204 SI USI SQ USQ SA USA \
205 DI UDI DQ UDQ DA UDA \
208 LIB2FUNCS_EXCLUDE += \
209 $(foreach conv,_fract _fractuns,\
210 $(foreach mode1,$(convf_modes),\
211 $(foreach mode2,$(convf_modes),$(conv_XY))))
213 # Conversions supported by lib1funcs-fixed.S
215 conv_to_sf_modes = QQ UQQ HQ UHQ HA UHA SQ USQ SA USA
216 conv_from_sf_modes = QQ UQQ HQ UHQ HA UHA SA USA
218 LIB2FUNCS_EXCLUDE += \
219 $(foreach conv,_fract, \
220 $(foreach mode1,$(conv_to_sf_modes), \
221 $(foreach mode2,SF,$(conv_XY))))
223 LIB2FUNCS_EXCLUDE += \
224 $(foreach conv,_fract,\
226 $(foreach mode2,$(conv_from_sf_modes),$(conv_XY))))
228 # Arithmetik supported by the compiler
230 allfix_modes = QQ UQQ HQ UHQ HA UHA SQ USQ SA USA DA UDA DQ UDQ TQ UTQ TA UTA
232 LIB2FUNCS_EXCLUDE += \
233 $(foreach func,_add _sub,\
234 $(foreach mode,$(allfix_modes),$(func_X)))
236 LIB2FUNCS_EXCLUDE += \
237 $(foreach func,_lshr _ashl _ashr _cmp,\
238 $(foreach mode,$(allfix_modes),$(func_X)))
241 usat_modes = UQQ UHQ UHA USQ USA UDQ UDA UTQ UTA
242 ssat_modes = QQ HQ HA SQ SA DQ DA TQ TA
244 LIB2FUNCS_EXCLUDE += \
245 $(foreach func,_ssadd _sssub _ssneg _ssabs,\
246 $(foreach mode,$(ssat_modes),$(func_X)))
248 LIB2FUNCS_EXCLUDE += \
249 $(foreach func,_usadd _ussub _usneg,\
250 $(foreach mode,$(usat_modes),$(func_X)))
253 smul_modes = QQ HQ HA SA
254 umul_modes = UQQ UHQ UHA USA
255 sdiv_modes = QQ HQ HA SA
256 udiv_modes = UQQ UHQ UHA USA
258 LIB2FUNCS_EXCLUDE += \
259 $(foreach func,_mul,\
260 $(foreach mode,$(smul_modes) $(umul_modes),$(func_X)))
262 LIB2FUNCS_EXCLUDE += \
263 $(foreach func,_div,\
264 $(foreach mode,$(sdiv_modes) $(udiv_modes),$(func_X)))
268 usmul_modes = UHA USA
270 LIB2FUNCS_EXCLUDE += \
271 $(foreach func,_usmul,\
272 $(foreach mode,$(usmul_modes),$(func_X)))
274 LIB2FUNCS_EXCLUDE += \
275 $(foreach func,_ssmul,\
276 $(foreach mode,$(ssmul_modes),$(func_X)))