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      1 LIB1ASMSRC = avr/lib1funcs.S
      2 LIB1ASMFUNCS = \
      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 
     47 ifneq ($(MULTIFLAGS),-mmcu=avrtiny)
     48 LIB1ASMFUNCS += \
     49     _mulsqipsi3 \
     50 	_mulhisi3 \
     51 	_umulhisi3 \
     52 	_usmulhisi3 \
     53 	_muluhisi3 \
     54 	_mulshisi3 \
     55     _muldi3 _muldi3_6 \
     56     _mulsidi3 _umulsidi3 \
     57 	_divdi3 _udivdi3 \
     58 	_udivmod64 \
     59 	_negdi2 \
     60 	_prologue \
     61 	_epilogue \
     62 	_load_3 _load_4 \
     63 	_xload_1 _xload_2 _xload_3 _xload_4 \
     64 	_movmemx \
     65 	_clzdi2 \
     66 	_paritydi2 \
     67 	_popcountdi2 \
     68 	_bswapdi2 \
     69 	_ashldi3 _ashrdi3 _lshrdi3 _rotldi3 \
     70 	_adddi3 _adddi3_s8 _subdi3 \
     71 	_cmpdi2 _cmpdi2_s8 \
     72 	_powif
     73 endif
     74 
     75 # Fixed point routines in avr/lib1funcs-fixed.S
     76 ifneq ($(MULTIFLAGS),-mmcu=avrtiny)
     77 LIB1ASMFUNCS += \
     78 	_fractqqsf _fractuqqsf \
     79 	_fracthqsf _fractuhqsf _fracthasf _fractuhasf \
     80 	_fractsasf _fractusasf _fractsqsf _fractusqsf \
     81 	\
     82 	_fractsfqq _fractsfuqq \
     83 	_fractsfhq _fractsfuhq _fractsfha _fractsfuha \
     84 	_fractsfsq _fractsfusq _fractsfsa _fractsfusa \
     85 	_mulqq3 \
     86 	_mulhq3 _muluhq3 \
     87 	_mulha3 _muluha3 _muluha3_round \
     88 	_mulsa3 _mulusa3 \
     89 	_usmuluha3 _ssmulha3 \
     90 	_usmulusa3 _ssmulsa3 \
     91 	_divqq3 _udivuqq3 _divqq_helper \
     92 	_divhq3 _udivuhq3 \
     93 	_divha3 _udivuha3 \
     94 	_divsa3 _udivusa3 \
     95 	_clr_8 \
     96 	_ssneg_2 _ssneg_4 _ssneg_8 \
     97 	_ssabs_1 _ssabs_2 _ssabs_4 _ssabs_8 \
     98 	_ssadd_8 _sssub_8 \
     99 	_usadd_8 _ussub_8 \
    100 	_mask1 _ret \
    101 	_roundqq3 _rounduqq3 \
    102 	_round_s2 _round_u2 _round_2_const _addmask_2 \
    103 	_round_s4 _round_u4 _round_4_const _addmask_4 \
    104 	_round_x8 \
    105 	_rounddq3 _roundudq3 \
    106 	_roundda3 _rounduda3 \
    107 	_roundta3 _rounduta3
    108 endif
    109 
    110 LIB2FUNCS_EXCLUDE = \
    111 	_moddi3 _umoddi3 \
    112 	_clz \
    113 	_clrsbdi2 \
    114 	_powisf2
    115 
    116 
    117 ifeq ($(long_double_type_size),32)
    118 # We do not have the DFtype.
    119 HOST_LIBGCC2_CFLAGS += -DDF=SF
    120 endif
    121 
    122 # Most of the C functions in libgcc2 use almost all registers,
    123 # so use -mcall-prologues for smaller code size.
    124 HOST_LIBGCC2_CFLAGS += -Dinhibit_libc -mcall-prologues -Os
    125 
    126 # Extra 16-bit integer functions.
    127 intfuncs16 = _absvXX2 _addvXX3 _subvXX3 _mulvXX3 _negvXX2 _clrsbXX2
    128 
    129 hiintfuncs16 = $(subst XX,hi,$(intfuncs16))
    130 siintfuncs16 = $(subst XX,si,$(intfuncs16))
    131 
    132 iter-items := $(hiintfuncs16)
    133 iter-labels := $(siintfuncs16)
    134 iter-sizes := $(patsubst %,2,$(siintfuncs16)) $(patsubst %,2,$(hiintfuncs16))
    135 
    136 
    137 -include $(patsubst %,$(srcdir)/siditi-object.mk,$(iter-items))
    138 libgcc-objects += $(patsubst %,%$(objext),$(hiintfuncs16))
    139 
    140 ifeq ($(enable_shared),yes)
    141 libgcc-s-objects += $(patsubst %,%_s$(objext),$(hiintfuncs16))
    142 endif
    143 
    144 ###
    145 
    146 conv_XY=$(conv)$(mode1)$(mode2)
    147 func_X=$(func)$(mode)
    148 
    149 # Compile C functions from lib2funcs.c and add them to libgcc.a.
    150 #
    151 # Some functions which are not performance.critical are more convenient
    152 # to implement in C than in assembler.  Most of them serve as implementation
    153 # for AVR-specific builtins in the case where the address of a builtin
    154 # function is taken or if there is no insn that implements the builtin.
    155 #
    156 # We don't use LIB2ADD because we want to iterate over the source for
    157 # different modes, fixed-point suffixes, etc.  See iter-labels and L_LABEL.
    158 # iter-label will get one more underscore in order to avoid too short
    159 # labels like -DLk and we use -DL_k instead.
    160 
    161 # Build roundFX functions from lib2funcs.c
    162 
    163 round_suffix :=  hr r lr uhr ur ulr  \
    164 		 hk k    uhk uk 
    165 round_funcs  := $(foreach func,_round,\
    166 		$(foreach mode,$(round_suffix),$(func_X)))
    167 
    168 iter-items  := $(round_funcs)
    169 iter-labels := $(round_suffix)
    170 iter-flags  := $(patsubst %,-DL_round,$(iter-items))
    171 
    172 -include $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
    173 
    174 libgcc-objects += $(patsubst %,%$(objext),$(round_funcs))
    175 
    176 # Build clrsbXX functions from lib2funcs.c
    177 
    178 clrsb_modes := qi di
    179 clrsb_funcs := $(foreach func,_clrsb,\
    180 	       $(foreach mode,$(clrsb_modes),$(func_X)))
    181 
    182 iter-items  := $(clrsb_funcs)
    183 iter-labels := $(clrsb_funcs)
    184 iter-flags  := $(patsubst %,-DL_clrsb,$(iter-items))
    185 
    186 -include $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
    187 
    188 libgcc-objects += $(patsubst %,%$(objext),$(clrsb_funcs))
    189 
    190 # Build signed countlsFX functions from lib2funcs.c
    191 
    192 countls_modes := qi hi si di
    193 countls_funcs := $(foreach func,_countls,\
    194 		 $(foreach mode,$(countls_modes),$(func_X)))
    195 
    196 iter-items  := $(countls_funcs)
    197 iter-labels := $(countls_modes)
    198 iter-flags  := $(patsubst %,-DL_countls,$(iter-items))
    199 
    200 -include $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
    201 
    202 libgcc-objects += $(patsubst %,%$(objext),$(countls_funcs))
    203 
    204 # Build unsigned countlsFX functions from lib2funcs.c
    205 
    206 countlsu_modes := qi hi si di
    207 countlsu_funcs := $(foreach func,_countlsu,\
    208 		  $(foreach mode,$(countlsu_modes),$(func_X)))
    209 
    210 iter-items  := $(countlsu_funcs)
    211 iter-labels := $(countlsu_modes)
    212 iter-flags  := $(patsubst %,-DL_countlsu,$(iter-items))
    213 
    214 -include $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
    215 
    216 libgcc-objects += $(patsubst %,%$(objext),$(countlsu_funcs))
    217 
    218 
    219 # Filter out supported conversions from fixed-bit.c
    220 # Also filter out TQ and UTQ.
    221 
    222 # Conversions supported by the compiler
    223 
    224 convf_modes =	 QI UQI QQ UQQ \
    225 		 HI UHI HQ UHQ HA UHA \
    226 		 SI USI SQ USQ SA USA \
    227 		 DI UDI DQ UDQ DA UDA \
    228 		 TI UTI TQ UTQ TA UTA
    229 
    230 LIB2FUNCS_EXCLUDE += \
    231 	$(foreach conv,_fract _fractuns,\
    232 	$(foreach mode1,$(convf_modes),\
    233 	$(foreach mode2,$(convf_modes),$(conv_XY))))
    234 
    235 # Conversions supported by lib1funcs-fixed.S
    236 
    237 conv_to_sf_modes   = QQ UQQ HQ UHQ HA UHA SQ USQ SA USA
    238 conv_from_sf_modes = QQ UQQ HQ UHQ HA UHA        SA USA
    239 
    240 LIB2FUNCS_EXCLUDE += \
    241 	$(foreach conv,_fract, \
    242 	$(foreach mode1,$(conv_to_sf_modes), \
    243 	$(foreach mode2,SF,$(conv_XY))))
    244 
    245 LIB2FUNCS_EXCLUDE += \
    246 	$(foreach conv,_fract,\
    247 	$(foreach mode1,SF,\
    248 	$(foreach mode2,$(conv_from_sf_modes),$(conv_XY))))
    249 
    250 # Arithmetik supported by the compiler
    251 
    252 allfix_modes = QQ UQQ HQ UHQ HA UHA SQ USQ SA USA DA UDA DQ UDQ TQ UTQ TA UTA
    253 
    254 LIB2FUNCS_EXCLUDE += \
    255 	$(foreach func,_add _sub,\
    256 	$(foreach mode,$(allfix_modes),$(func_X)))
    257 
    258 LIB2FUNCS_EXCLUDE += \
    259 	$(foreach func,_lshr _ashl _ashr _cmp,\
    260 	$(foreach mode,$(allfix_modes),$(func_X)))
    261 
    262 
    263 usat_modes = UQQ UHQ UHA USQ USA UDQ UDA UTQ UTA
    264 ssat_modes =  QQ  HQ  HA  SQ  SA  DQ  DA  TQ  TA
    265 
    266 LIB2FUNCS_EXCLUDE += \
    267 	$(foreach func,_ssadd _sssub _ssneg _ssabs,\
    268 	$(foreach mode,$(ssat_modes),$(func_X)))
    269 
    270 LIB2FUNCS_EXCLUDE += \
    271 	$(foreach func,_usadd _ussub _usneg,\
    272 	$(foreach mode,$(usat_modes),$(func_X)))
    273 
    274 
    275 smul_modes =  QQ  HQ  HA  SA
    276 umul_modes = UQQ UHQ UHA USA
    277 sdiv_modes =  QQ  HQ  HA  SA
    278 udiv_modes = UQQ UHQ UHA USA
    279 
    280 LIB2FUNCS_EXCLUDE += \
    281 	$(foreach func,_mul,\
    282 	$(foreach mode,$(smul_modes) $(umul_modes),$(func_X)))
    283 
    284 LIB2FUNCS_EXCLUDE += \
    285 	$(foreach func,_div,\
    286 	$(foreach mode,$(sdiv_modes) $(udiv_modes),$(func_X)))
    287 
    288 
    289 ssmul_modes =  HA  SA
    290 usmul_modes = UHA USA
    291 
    292 LIB2FUNCS_EXCLUDE += \
    293 	$(foreach func,_usmul,\
    294 	$(foreach mode,$(usmul_modes),$(func_X)))
    295 
    296 LIB2FUNCS_EXCLUDE += \
    297 	$(foreach func,_ssmul,\
    298 	$(foreach mode,$(ssmul_modes),$(func_X)))
    299