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t-avr revision 1.1.1.3 
      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 ($(MULTIFLAGS),-mmcu=avrtiny)
     48 LIB1ASMFUNCS += \
     49     _mulsqipsi3 \
     50 	_mulhisi3 \
     51 	_umulhisi3 \
     52 	_usmulhisi3 \
     53 	_muluhisi3 \
     54 	_mulshisi3 \
     55     _muldi3 _muldi3_6 \
     56     _mulsidi3 _umulsidi3 \
     57 	_divdi3 _udivdi3 \
     58 	_udivmod64 \
     59 	_negdi2 \
     60 	_prologue \
     61 	_epilogue \
     62 	_load_3 _load_4 \
     63 	_xload_1 _xload_2 _xload_3 _xload_4 \
     64 	_movmemx \
     65 	_clzdi2 \
     66 	_paritydi2 \
     67 	_popcountdi2 \
     68 	_bswapdi2 \
     69 	_ashldi3 _ashrdi3 _lshrdi3 _rotldi3 \
     70 	_adddi3 _adddi3_s8 _subdi3 \
     71 	_cmpdi2 _cmpdi2_s8
     72 endif
     73 
     74 # Fixed point routines in avr/lib1funcs-fixed.S
     75 ifneq ($(MULTIFLAGS),-mmcu=avrtiny)
     76 LIB1ASMFUNCS += \
     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
    107 endif
    108 
    109 LIB2FUNCS_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.
    118 HOST_LIBGCC2_CFLAGS += -DDF=SF -Dinhibit_libc -mcall-prologues -Os
    119 
    120 # Extra 16-bit integer functions.
    121 intfuncs16 = _absvXX2 _addvXX3 _subvXX3 _mulvXX3 _negvXX2 _clrsbXX2
    122 
    123 hiintfuncs16 = $(subst XX,hi,$(intfuncs16))
    124 siintfuncs16 = $(subst XX,si,$(intfuncs16))
    125 
    126 iter-items := $(hiintfuncs16)
    127 iter-labels := $(siintfuncs16)
    128 iter-sizes := $(patsubst %,2,$(siintfuncs16)) $(patsubst %,2,$(hiintfuncs16))
    129 
    130 
    131 include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/siditi-object.mk,$(iter-items))
    132 libgcc-objects += $(patsubst %,%$(objext),$(hiintfuncs16))
    133 
    134 ifeq ($(enable_shared),yes)
    135 libgcc-s-objects += $(patsubst %,%_s$(objext),$(hiintfuncs16))
    136 endif
    137 
    138 ###
    139 
    140 conv_XY=$(conv)$(mode1)$(mode2)
    141 func_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 
    157 round_suffix :=  hr r lr uhr ur ulr  \
    158 		 hk k    uhk uk 
    159 round_funcs  := $(foreach func,_round,\
    160 		$(foreach mode,$(round_suffix),$(func_X)))
    161 
    162 iter-items  := $(round_funcs)
    163 iter-labels := $(round_suffix)
    164 iter-flags  := $(patsubst %,-DL_round,$(iter-items))
    165 
    166 include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
    167 
    168 libgcc-objects += $(patsubst %,%$(objext),$(round_funcs))
    169 
    170 # Build clrsbXX functions from lib2funcs.c
    171 
    172 clrsb_modes := qi di
    173 clrsb_funcs := $(foreach func,_clrsb,\
    174 	       $(foreach mode,$(clrsb_modes),$(func_X)))
    175 
    176 iter-items  := $(clrsb_funcs)
    177 iter-labels := $(clrsb_funcs)
    178 iter-flags  := $(patsubst %,-DL_clrsb,$(iter-items))
    179 
    180 include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
    181 
    182 libgcc-objects += $(patsubst %,%$(objext),$(clrsb_funcs))
    183 
    184 # Build signed countlsFX functions from lib2funcs.c
    185 
    186 countls_modes := qi hi si di
    187 countls_funcs := $(foreach func,_countls,\
    188 		 $(foreach mode,$(countls_modes),$(func_X)))
    189 
    190 iter-items  := $(countls_funcs)
    191 iter-labels := $(countls_modes)
    192 iter-flags  := $(patsubst %,-DL_countls,$(iter-items))
    193 
    194 include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
    195 
    196 libgcc-objects += $(patsubst %,%$(objext),$(countls_funcs))
    197 
    198 # Build unsigned countlsFX functions from lib2funcs.c
    199 
    200 countlsu_modes := qi hi si di
    201 countlsu_funcs := $(foreach func,_countlsu,\
    202 		  $(foreach mode,$(countlsu_modes),$(func_X)))
    203 
    204 iter-items  := $(countlsu_funcs)
    205 iter-labels := $(countlsu_modes)
    206 iter-flags  := $(patsubst %,-DL_countlsu,$(iter-items))
    207 
    208 include $(srcdir)/empty.mk $(patsubst %,$(srcdir)/config/avr/lib2-object.mk,$(iter-items))
    209 
    210 libgcc-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 
    218 convf_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 
    224 LIB2FUNCS_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 
    231 conv_to_sf_modes   = QQ UQQ HQ UHQ HA UHA SQ USQ SA USA
    232 conv_from_sf_modes = QQ UQQ HQ UHQ HA UHA        SA USA
    233 
    234 LIB2FUNCS_EXCLUDE += \
    235 	$(foreach conv,_fract, \
    236 	$(foreach mode1,$(conv_to_sf_modes), \
    237 	$(foreach mode2,SF,$(conv_XY))))
    238 
    239 LIB2FUNCS_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 
    246 allfix_modes = QQ UQQ HQ UHQ HA UHA SQ USQ SA USA DA UDA DQ UDQ TQ UTQ TA UTA
    247 
    248 LIB2FUNCS_EXCLUDE += \
    249 	$(foreach func,_add _sub,\
    250 	$(foreach mode,$(allfix_modes),$(func_X)))
    251 
    252 LIB2FUNCS_EXCLUDE += \
    253 	$(foreach func,_lshr _ashl _ashr _cmp,\
    254 	$(foreach mode,$(allfix_modes),$(func_X)))
    255 
    256 
    257 usat_modes = UQQ UHQ UHA USQ USA UDQ UDA UTQ UTA
    258 ssat_modes =  QQ  HQ  HA  SQ  SA  DQ  DA  TQ  TA
    259 
    260 LIB2FUNCS_EXCLUDE += \
    261 	$(foreach func,_ssadd _sssub _ssneg _ssabs,\
    262 	$(foreach mode,$(ssat_modes),$(func_X)))
    263 
    264 LIB2FUNCS_EXCLUDE += \
    265 	$(foreach func,_usadd _ussub _usneg,\
    266 	$(foreach mode,$(usat_modes),$(func_X)))
    267 
    268 
    269 smul_modes =  QQ  HQ  HA  SA
    270 umul_modes = UQQ UHQ UHA USA
    271 sdiv_modes =  QQ  HQ  HA  SA
    272 udiv_modes = UQQ UHQ UHA USA
    273 
    274 LIB2FUNCS_EXCLUDE += \
    275 	$(foreach func,_mul,\
    276 	$(foreach mode,$(smul_modes) $(umul_modes),$(func_X)))
    277 
    278 LIB2FUNCS_EXCLUDE += \
    279 	$(foreach func,_div,\
    280 	$(foreach mode,$(sdiv_modes) $(udiv_modes),$(func_X)))
    281 
    282 
    283 ssmul_modes =  HA  SA
    284 usmul_modes = UHA USA
    285 
    286 LIB2FUNCS_EXCLUDE += \
    287 	$(foreach func,_usmul,\
    288 	$(foreach mode,$(usmul_modes),$(func_X)))
    289 
    290 LIB2FUNCS_EXCLUDE += \
    291 	$(foreach func,_ssmul,\
    292 	$(foreach mode,$(ssmul_modes),$(func_X)))
    293