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#
# Copyright (c) 2016-2019 Matt Borgerson
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
ARCH := x86
CC = gcc
CFLAGS = -Werror -ansi -Os -g -ffunction-sections -fno-stack-protector -I$(ARCH) -I$(PWD)
LD = ld
LDFLAGS = --script=gdbstub.ld --gc-sections
NASM = nasm
NASM_FLAGS = -felf
OBJCOPY = objcopy
OBJCOPYFLAGS = --output-target=binary
TARGET = gdbstub.bin
BASE_ADDRESS = 0x500000
OBJECTS = gdbstub_rsp.o \
$(ARCH)/gdbstub_sys.o
ifeq ($(ARCH),x86)
CFLAGS += -m32
LDFLAGS += -m elf_i386
OBJECTS += $(ARCH)/gdbstub_int.o
else
$(error Please specify a supported architecture)
endif
all: $(TARGET)
.PRECIOUS: %.elf
%.bin: %.elf
$(OBJCOPY) $(OBJCOPYFLAGS) $^ $@
%.elf: $(OBJECTS) gdbstub.ld
$(LD) $(LDFLAGS) -o $@ $(OBJECTS)
gdbstub.ld: gdbstub.ld.in
$(shell sed -e "s/\$$BASE_ADDRESS/$(BASE_ADDRESS)/" gdbstub.ld.in > gdbstub.ld)
%.o: %.c
$(CC) $(CFLAGS) -o $@ -c $<
%.o: %.nasm
$(NASM) -o $@ $(NASM_FLAGS) $<
.PHONY: clean
clean:
rm -f \
$(TARGET) \
$(TARGET:.bin=.elf) \
$(OBJECTS) \
gdbstub.ld
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