libgcc/config/avr/t-avrlibc

   1 # This file is used if not configured --with-avrlibc=no
   2 #
   3 # AVR-Libc comes with hand-optimized float routines.
   4 # For historical reasons, these routines live in AVR-Libc
   5 # and not in libgcc and use the same function names like libgcc.
   6 # To get the best support, i.e. always use the routines from
   7 # AVR-Libc, we remove these routines from libgcc.
   8 #
   9 # See also PR54461.
  10 #
  11 #
  12 # Arithmetic:
  13 #     __addsf3 __subsf3 __divsf3 __mulsf3 __negsf2
  14 #
  15 # Comparison:
  16 #     __cmpsf2 __unordsf2
  17 #     __eqsf2 __lesf2 __ltsf2 __nesf2 __gesf2 __gtsf2
  18 #
  19 # Conversion:
  20 #     __fixsfdi __fixunssfdi __floatdisf __floatundisf
  21 #     __fixsfsi __fixunssfsi __floatsisf __floatunsisf
  22 #
  23 #
  24 # These functions are contained in modules:
  25 #
  26 # _addsub_sf.o:   __addsf3  __subsf3
  27 # _mul_sf.o:      __mulsf3
  28 # _div_sf.o:      __divsf3
  29 # _negate_sf.o:   __negsf2
  30 #
  31 # _compare_sf.o:  __cmpsf2
  32 # _unord_sf.o:    __unordsf2
  33 # _eq_sf.o:       __eqsf2
  34 # _ne_sf.o:       __nesf2
  35 # _ge_sf.o:       __gesf2
  36 # _gt_sf.o:       __gtsf2
  37 # _le_sf.o:       __lesf2
  38 # _lt_sf.o:       __ltsf2
  39 #
  40 # _fixsfdi.o:     __fixsfdi
  41 # _fixunssfdi.o:  __fixunssfdi
  42 # _fixunssfsi.o:  __fixunssfsi
  43 # _floatdisf.o:   __floatdisf
  44 # _floatundisf.o: __floatundisf
  45 # _sf_to_si.o:    __fixsfsi
  46 # _si_to_sf.o:    __floatsisf
  47 # _usi_to_sf.o:   __floatunsisf
  48
  49
  50 # SFmode
  51 LIB2FUNCS_EXCLUDE += \
  52         _addsub_sf \
  53         _negate_sf \
  54         _mul_sf _div_sf \
  55         \
  56         _compare_sf \
  57         _unord_sf \
  58         _eq_sf _ne_sf \
  59         _gt_sf _ge_sf \
  60         _lt_sf _le_sf \
  61         \
  62         _si_to_sf  _sf_to_si \
  63         _usi_to_sf _sf_to_usi \
  64         _fixunssfsi _fixsfdi \
  65         _fixunssfdi \
  66         _floatdisf _floatundisf
  67
  68 ifeq (,$(WITH_LIBF7_MATH_SYMBOLS))
  69
  70 # No modules depend on __SIZEOF_LONG_DOUBLE__ or __SIZEOF_DOUBLE__
  71 # which means we might have an opportunity to copy libgcc.a.
  72 # WITH_LIBF7_MATH_SYMBOLS is set by libf7/t-libf7-math-symbols.
  73
  74 ifneq (,$(findstring avr,$(MULTISUBDIR)))
  75
  76 # We are not in the avr2 (default) subdir, hence copying will work.
  77 # In default dir, copying won'twork because the default multilib is
  78 # built after all the others.
  79
  80 ifneq (,$(findstring double,$(MULTISUBDIR)))
  81
  82 # We are in double{32|64}/libgcc or long-double{32|64}/libgcc:
  83 # Just copy from the [long ]double=float multilib; we would remove any DFmode
  84 # bits from this multilib variant, anyway, because the current assumption
  85 # is that avr-libc hosts *all* the IEEE-double stuff.
  86
  87 LIB2FUNCS_EXCLUDE := %
  88 LIB1ASMFUNCS :=
  89 libgcc-objects :=
  90 libgcov-objects :=
  91 objects :=
  92
  93 t-copy-libgcc.dep: $(srcdir)/config/avr/t-copy-libgcc
  94         -rm -f libgcc.a
  95         -rm -f libgcov.a
  96         cp $< $@
  97
  98 libgcc.a libgcov.a libgcc_tm.h: t-copy-libgcc.dep
  99
 100 Makefile: t-copy-libgcc.dep
 101
 102 endif
 103 endif
 104 endif