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# Support for adding __float128 to the powerpc.
# The standard 128-bit floating point support functions are TFmode. Most
# PowerPC targets use a long double format that has a pair of doubles to give
# you more precision, but no extra expoenent range. This long double format is
# mostly compatible with the format used by the IBM XL compilers. Some of the
# names used by the IBM double-double format use TF in them, so we rename
# all of the functions provided for the new IEEE 128-bit support.
#
# We use the TF functions in soft-fp for 128-bit floating point support, using
# sed to transform the names in the files from TF names to KF names.
# Emulator functions from the soft-fp directory
fp128_softfp_funcs = addkf3 subkf3 mulkf3 divkf3 negkf2 \
unordkf2 eqkf2 gekf2 lekf2 \
extendsfkf2 extenddfkf2 trunckfsf2 trunckfdf2 \
fixkfsi fixkfdi fixunskfsi fixunskfdi \
floatsikf floatdikf floatunsikf floatundikf
fp128_softfp_src = $(addsuffix -sw.c,$(fp128_softfp_funcs))
fp128_softfp_static_obj = $(addsuffix -sw$(objext),$(fp128_softfp_funcs))
fp128_softfp_shared_obj = $(addsuffix -sw_s$(objext),$(fp128_softfp_funcs))
fp128_softfp_obj = $(fp128_softfp_static_obj) $(fp128_softfp_shared_obj)
# Decimal <-> _Float128 conversions
fp128_dec_funcs = _kf_to_sd _kf_to_dd _kf_to_td \
_sd_to_kf _dd_to_kf _td_to_kf
# Decimal <-> __ibm128 conversions
ibm128_dec_funcs = _tf_to_sd _tf_to_dd _tf_to_td \
_sd_to_tf _dd_to_tf _td_to_tf
# New functions for software emulation
fp128_ppc_funcs = floattikf-sw floatuntikf-sw \
fixkfti-sw fixunskfti-sw \
extendkftf2-sw trunctfkf2-sw \
sfp-exceptions _mulkc3 _divkc3 _powikf2
ifeq ($(decimal_float),yes)
fp128_ppc_funcs += $(fp128_dec_funcs)
endif
fp128_ppc_src = $(addprefix $(srcdir)/config/rs6000/,$(addsuffix \
.c,$(fp128_ppc_funcs)))
fp128_ppc_static_obj = $(addsuffix $(objext),$(fp128_ppc_funcs))
fp128_ppc_shared_obj = $(addsuffix _s$(objext),$(fp128_ppc_funcs))
fp128_ppc_obj = $(fp128_ppc_static_obj) $(fp128_ppc_shared_obj)
# All functions
fp128_funcs = $(fp128_softfp_funcs) $(fp128_ppc_funcs) \
$(fp128_hw_funcs) $(fp128_ifunc_funcs) \
$(fp128_3_1_hw_funcs)
fp128_src = $(fp128_softfp_src) $(fp128_ppc_src) \
$(fp128_hw_src) $(fp128_ifunc_src) \
$(fp128_3_1_hw_src)
fp128_obj = $(fp128_softfp_obj) $(fp128_ppc_obj) \
$(fp128_hw_obj) $(fp128_ifunc_obj) \
$(fp128_3_1_hw_obj)
fp128_sed = $(srcdir)/config/rs6000/float128-sed$(fp128_sed_hw)
fp128_dep = $(fp128_sed) $(srcdir)/config/rs6000/t-float128
fp128_includes = $(srcdir)/soft-fp/double.h \
$(srcdir)/soft-fp/op-1.h \
$(srcdir)/soft-fp/op-4.h \
$(srcdir)/soft-fp/op-common.h \
$(srcdir)/soft-fp/single.h \
$(srcdir)/soft-fp/extended.h \
$(srcdir)/soft-fp/op-2.h \
$(srcdir)/soft-fp/op-8.h \
$(srcdir)/soft-fp/quad.h \
$(srcdir)/soft-fp/soft-fp.h
# Build the emulator without ISA 3.0 hardware support.
FP128_CFLAGS_SW = -Wno-type-limits -mvsx -mfloat128 \
-mno-float128-hardware -mno-gnu-attribute \
-I$(srcdir)/soft-fp \
-I$(srcdir)/config/rs6000 \
$(FLOAT128_HW_INSNS)
$(fp128_softfp_obj) : INTERNAL_CFLAGS += $(FP128_CFLAGS_SW)
$(fp128_ppc_obj) : INTERNAL_CFLAGS += $(FP128_CFLAGS_SW)
$(fp128_obj) : $(fp128_includes)
$(fp128_obj) : $(srcdir)/config/rs6000/quad-float128.h
# Force the TF mode to/from decimal functions to be compiled with IBM long
# double. Add building the KF mode to/from decimal conversions with explict
# IEEE long double.
fp128_dec_objs = $(addsuffix $(objext),$(fp128_dec_funcs)) \
$(addsuffix _s$(objext),$(fp128_dec_funcs))
ibm128_dec_objs = $(addsuffix $(objext),$(ibm128_dec_funcs)) \
$(addsuffix _s$(objext),$(ibm128_dec_funcs))
FP128_CFLAGS_DECIMAL = -mno-gnu-attribute -Wno-psabi -mabi=ieeelongdouble
IBM128_CFLAGS_DECIMAL = -mno-gnu-attribute -Wno-psabi -mabi=ibmlongdouble
$(fp128_dec_objs) : INTERNAL_CFLAGS += $(FP128_CFLAGS_DECIMAL)
$(ibm128_dec_objs) : INTERNAL_CFLAGS += $(IBM128_CFLAGS_DECIMAL)
$(fp128_softfp_src) : $(srcdir)/soft-fp/$(subst -sw,,$(subst kf,tf,$@)) $(fp128_dep)
@src="$(srcdir)/soft-fp/$(subst -sw,,$(subst kf,tf,$@))"; \
echo "Create $@"; \
(echo "/* file created from $$src */"; \
echo; \
sed -f $(fp128_sed) < $$src) > $@
.PHONY: test clean-float128
test:
@echo "fp128_src:"; \
for x in $(fp128_src); do echo " $$x"; done; \
echo; \
echo "fp128_obj:"; \
for x in $(fp128_obj); do echo " $$x"; done;
clean-float128:
-rm -f $(fp128_softfp_src) $(fp128_hardfp_src)
@$(MULTICLEAN) multi-clean DO=clean-float128
# For now, only put it in the static library
# LIB2ADD += $(fp128_src)
LIB2ADD_ST += $(fp128_src)
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