t-mcore

gcc-you can use this code to learn something about gcc, and inquire further into linux,

LIB1ASMSRC    = mcore/lib1.asm
LIB1ASMFUNCS  = _divsi3 _udivsi3 _modsi3 _umodsi3

# Assemble startup files.
$(T)crti.o: $(srcdir)/config/mcore/crti.asm $(GCC_PASSES)
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
	-c -o $(T)crti.o -x assembler-with-cpp $(srcdir)/config/mcore/crti.asm

$(T)crtn.o: $(srcdir)/config/mcore/crtn.asm $(GCC_PASSES)
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
	-c -o $(T)crtn.o -x assembler-with-cpp $(srcdir)/config/mcore/crtn.asm

# We want fine grained libraries, so use the new code to build the
# floating point emulation libraries.
FPBIT = fp-bit.c
DPBIT = dp-bit.c

dp-bit.c: $(srcdir)/config/fp-bit.c $(srcdir)/config/mcore/t-mcore
	rm -f dp-bit.c
	echo '' > dp-bit.c
	cat $(srcdir)/config/fp-bit.c >> dp-bit.c

fp-bit.c: $(srcdir)/config/fp-bit.c $(srcdir)/config/mcore/t-mcore
	rm -f fp-bit.c
	echo '' > fp-bit.c
	echo '#define FLOAT' > fp-bit.c
	cat $(srcdir)/config/fp-bit.c >> fp-bit.c

T_CFLAGS = -DDONT_HAVE_STDIO -DDONT_HAVE_SETJMP  -Dinhibit_libc 
# could use -msifilter to be safe from interrupt/jmp interactions and others.
TARGET_LIBGCC2_CFLAGS=-O3 -DNO_FLOATLIB_FIXUNSDFSI #-msifilter

# We have values for float.h.
CROSS_FLOAT_H = $(srcdir)/config/mcore/gfloat.h

# If support for -m4align is ever re-enabled then comment out the
# following line and uncomment the mutlilib lines below.

EXTRA_PARTS = crtbegin.o crtend.o crti.o crtn.o

# MULTILIB_OPTIONS     = m8align/m4align
# MULTILIB_DIRNAMES    = align8 align4
# MULTILIB_MATCHES     = 
# MULTILIB_EXTRA_OPTS  = 
# MULTILIB_EXCEPTIONS  =
# EXTRA_MULTILIB_PARTS = crtbegin.o crtend.o crti.o crtn.o
# LIBGCC               = stmp-multilib
# INSTALL_LIBGCC       = install-multilib

MULTILIB_OPTIONS     = mbig-endian/mlittle-endian m210/m340
MULTILIB_DIRNAMES    = big little m210 m340

EXTRA_PARTS          =
EXTRA_MULTILIB_PARTS = crtbegin.o crtend.o crti.o crtn.o
LIBGCC               = stmp-multilib
INSTALL_LIBGCC       = install-multilib