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# Used except --with-libf7=no
avrsrc := $(srcdir)/config/avr
libf7 := $(avrsrc)/libf7
F7_PREFIX = __f7_
include $(libf7)/libf7-common.mk
LIBF7_DF_CONV += floatundidf floatdidf # floatunsidf floatsidf
# Wrappers like f7_lt_impl for f7_lt etc. because the latter is inline.
LIBF7_DF_CMP += lt le gt ge ne eq unord
F7_C_PARTS += $(LIBF7_DF_CONV) $(LIBF7_DF_CMP)
# -mcall-prologues
CALL_PROLOGUES += $(LIBF7_DF_CONV)
# -Wno-missing-prototypes
NO_PROTO += $(LIBF7_DF_CONV)
F7F += le_impl lt_impl gt_impl ge_impl ne_impl eq_impl unord_impl
$(libf7)/f7-renames.h: $(libf7)/f7renames.sh $(libf7)/libf7-common.mk
$< head $(F7_PREFIX) t-libf7 > $@
$< c $(F7_PREFIX) $(F7F) >> $@
$< cst $(F7_PREFIX) $(F7F_cst) >> $@
$< asm $(F7_PREFIX) $(F7F_asm) >> $@
$< tail $(F7_PREFIX) >> $@
# The right-hand sides like g_ddd come from libf7-common.mk.
# The _m_ wraps are added by t-libf7-math
# __adddf3, ...
F7_ASM_WRAPS_g_ddd += $(g_ddd)
# __ltdf2, ...
F7_ASM_WRAPS_g_xdd_cmp += $(g_xdd_cmp)
# __floatsidf, ...
F7_ASM_WRAPS_g_dx += $(g_dx)
# __fixdfsi, ...
F7_ASM_WRAPS_g_xd += $(g_xd)
$(libf7)/f7-wraps.h: $(libf7)/f7wraps.sh \
$(libf7)/libf7-common.mk $(libf7)/t-libf7-math
$< header "WITH_LIBF7_MATH_FUNCTIONS=$(WITH_LIBF7_MATH_FUNCTIONS)" "WITH_LIBF7_MATH_SYMBOLS=$(WITH_LIBF7_MATH_SYMBOLS)" > $@
$< ddd_libgcc $(F7_ASM_WRAPS_g_ddd) >> $@
$< xdd_libgcc_cmp $(F7_ASM_WRAPS_g_xdd_cmp) >> $@
$< xd_libgcc $(F7_ASM_WRAPS_g_xd) >> $@
$< dx_libgcc $(F7_ASM_WRAPS_g_dx) >> $@
$< ddd_math $(F7_ASM_WRAPS_m_ddd) >> $@
$< ddx_math $(F7_ASM_WRAPS_m_ddx) >> $@
$< dd_math $(F7_ASM_WRAPS_m_dd) >> $@
$< xd_math $(F7_ASM_WRAPS_m_xd) >> $@
F7_ASM_WRAPS += $(F7_ASM_WRAPS_g_xd)
F7_ASM_WRAPS += $(F7_ASM_WRAPS_g_dx)
F7_ASM_WRAPS += $(F7_ASM_WRAPS_g_ddd)
F7_ASM_WRAPS += $(F7_ASM_WRAPS_g_xdd_cmp)
F7_ASM_WRAPS += $(F7_ASM_WRAPS_m_ddd)
F7_ASM_WRAPS += $(F7_ASM_WRAPS_m_ddx)
F7_ASM_WRAPS += $(F7_ASM_WRAPS_m_dd)
F7_ASM_WRAPS += $(F7_ASM_WRAPS_m_xd)
F7_ASM_PARTS += $(patsubst %, D_%, $(F7_ASM_WRAPS))
# Options
F7_FLAGS += -I $(libf7) -save-temps=obj
# t-avr::HOST_LIBGCC2_CFLAGS sets -mcall-prologues which will inhibits
# tail-call optimizations. The user could get it with -mrelax, but we
# just switch it off here and then explicitly on again for the
# CALL_PROLOGUES modules.
F7_C_FLAGS += $(F7_FLAGS) \
-dp -g0 \
-mno-call-prologues \
-fno-lto -Os \
-fdata-sections -ffunction-sections \
-fno-reorder-blocks \
-fno-tree-loop-optimize \
-fno-tree-loop-im -fno-move-loop-invariants
F7_ASM_FLAGS += $(F7_FLAGS)
$(patsubst %, f7_c_%.o, $(CALL_PROLOGUES)) \
: F7_C_FLAGS += -mcall-prologues
$(patsubst %, f7_c_%.o, $(STRICT_X)) \
: F7_C_FLAGS += -mstrict-X
$(patsubst %, f7_c_%.o, $(NO_PROTO)) \
: F7_C_FLAGS += -Wno-missing-prototypes
# Depends will be worked out by the libgcc build system.
F7_C_OBJECTS = $(patsubst %, f7_c_%$(objext), $(F7_C_PARTS))
F7_ASM_OBJECTS = $(patsubst %, f7_asm_%$(objext), $(F7_ASM_PARTS))
$(F7_ASM_OBJECTS) $(F7_C_OBJECTS) : $(libf7)/t-libf7
$(F7_ASM_OBJECTS) $(F7_C_OBJECTS) : $(libf7)/t-libf7-math
$(F7_ASM_OBJECTS) $(F7_C_OBJECTS) : $(libf7)/t-libf7-math-symbols
.PHONY: log_vars
all: log_vars
log_vars:
$(info # libf7: WITH_LIBF7_MATH_FUNCTIONS = $(WITH_LIBF7_MATH_FUNCTIONS))
$(info # libf7: WITH_LIBF7_MATH_SYMBOLS = $(WITH_LIBF7_MATH_SYMBOLS))
$(info # libf7: F7_C_PARTS = $(F7_C_PARTS))
$(info # libf7: F7_C_OBJECTS = $(F7_C_OBJECTS))
$(info # libf7: F7_ASM_PARTS = $(F7_ASM_PARTS))
$(info # libf7: F7_ASM_OBJECTS = $(F7_ASM_OBJECTS))
# Build the libf7 C objects and add them to libgcc.a.
f7_parts := $(F7_C_PARTS)
iter-items := $(f7_parts)
iter-labels := $(f7_parts)
-include $(patsubst %,$(libf7)/libf7-c-object.mk,$(iter-items))
libgcc-objects += $(patsubst %,f7_c_%$(objext),$(F7_C_PARTS))
# Build the libf7 ASM objects and add them to libgcc.a.
f7_parts := $(F7_ASM_PARTS)
iter-items := $(f7_parts)
iter-labels := $(f7_parts)
-include $(patsubst %,$(libf7)/libf7-asm-object.mk,$(iter-items))
libgcc-objects += $(patsubst %,f7_asm_%$(objext),$(F7_ASM_PARTS))
.PHONY: clean-f7
clean: clean-f7
clean-f7:
rm -f $(wildcard f7_*.i f7_*.s f7_*.o)
# Get rid if any DFmode remains.
LIB2FUNCS_EXCLUDE += \
_sf_to_df \
_fixdfdi \
_fixunsdfsi \
_floatundidf \
_fixunsdfdi \
_floatdidf \
_powidf2
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