
SLOF_DIR := $(SRC_PATH)/../../roms/SLOF

NETOBJS := start.o sclp.o cio.o virtio.o virtio-net.o jump2ipl.o netmain.o

LIBC_INC := -nostdinc -I$(SLOF_DIR)/lib/libc/include
LIBNET_INC := -I$(SLOF_DIR)/lib/libnet

NETLDFLAGS := $(LDFLAGS) -Wl,-Ttext=0x7800000

$(NETOBJS): EXTRA_CFLAGS += $(LIBC_INC) $(LIBNET_INC)

s390-netboot.elf: $(NETOBJS) libnet.a libc.a
	$(call quiet-command,$(CC) $(NETLDFLAGS) -o $@ $^,"BUILD","$(TARGET_DIR)$@")

s390-netboot.img: s390-netboot.elf
	$(call quiet-command,$(STRIP) --strip-unneeded $< -o $@,"STRIP","$(TARGET_DIR)$@")

# SLOF is GCC-only, so ignore warnings about GNU extensions with Clang here
NO_GNU_WARN := $(call cc-option,-Werror $(QEMU_CFLAGS),-Wno-gnu)

# libc files:

LIBC_CFLAGS = $(EXTRA_CFLAGS) $(CFLAGS) $(NO_GNU_WARN) $(LIBC_INC) $(LIBNET_INC) \
	      -MMD -MP -MT $@ -MF $(@:%.o=%.d)

CTYPE_OBJS = isdigit.o isxdigit.o toupper.o
%.o : $(SLOF_DIR)/lib/libc/ctype/%.c
	$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")

STRING_OBJS = strcat.o strchr.o strrchr.o strcpy.o strlen.o strncpy.o \
	      strcmp.o strncmp.o strcasecmp.o strncasecmp.o strstr.o \
	      memset.o memcpy.o memmove.o memcmp.o
%.o : $(SLOF_DIR)/lib/libc/string/%.c
	$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")

STDLIB_OBJS = atoi.o atol.o strtoul.o strtol.o rand.o malloc.o free.o
%.o : $(SLOF_DIR)/lib/libc/stdlib/%.c
	$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")

STDIO_OBJS = sprintf.o snprintf.o vfprintf.o vsnprintf.o vsprintf.o fprintf.o \
	     printf.o putc.o puts.o putchar.o stdchnls.o fileno.o
%.o : $(SLOF_DIR)/lib/libc/stdio/%.c
	$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")

sbrk.o: $(SLOF_DIR)/slof/sbrk.c
	$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")

LIBCOBJS := $(STRING_OBJS) $(CTYPE_OBJS) $(STDLIB_OBJS) $(STDIO_OBJS) sbrk.o

libc.a: $(LIBCOBJS)
	$(call quiet-command,$(AR) -rc $@ $^,"AR","$(TARGET_DIR)$@")

# libnet files:

LIBNETOBJS := args.o dhcp.o dns.o icmpv6.o ipv6.o tcp.o udp.o bootp.o \
	      dhcpv6.o ethernet.o ipv4.o ndp.o tftp.o pxelinux.o
LIBNETCFLAGS = $(EXTRA_CFLAGS) $(CFLAGS) $(NO_GNU_WARN) $(LIBC_INC) $(LIBNET_INC) \
	       -DDHCPARCH=0x1F -MMD -MP -MT $@ -MF $(@:%.o=%.d)

%.o : $(SLOF_DIR)/lib/libnet/%.c
	$(call quiet-command,$(CC) $(LIBNETCFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")

libnet.a: $(LIBNETOBJS)
	$(call quiet-command,$(AR) -rc $@ $^,"AR","$(TARGET_DIR)$@")