93 lines
2.1 KiB
Makefile
93 lines
2.1 KiB
Makefile
# Compiler and assembler
|
|
CROSS=riscv64-linux-gnu
|
|
CC = ${CROSS}-gcc
|
|
AS = ${CROSS}-as
|
|
LD = ${CROSS}-ld
|
|
OBJDUMP = ${CROSS}-objdump
|
|
SIZE = ${CROSS}-size
|
|
|
|
# Specify the target binary (call it whatever)
|
|
TARGET = bin.elf
|
|
|
|
# QEMU command and flags
|
|
# QEMU = qemu-riscv64-static
|
|
QEMU = qemu-system-riscv64
|
|
QEMU_FLAGS += --machine virt# # Use the virt machine
|
|
QEMU_FLAGS += --nographic# # No graphical output
|
|
|
|
# Flags for compiler and assembler
|
|
CFLAGS += -static# # Use static linking
|
|
CFLAGS += -nostartfiles# # Do not use standard startup files
|
|
CFLAGS += -nostdlib# # Do not use standard libraries
|
|
CFLAGS += -fno-builtin# # Do not use built-in functions
|
|
CFLAGS += -fno-common# # Do not use common sections
|
|
CFLAGS += -march=rv64im# # Use RV64I ISA, i.e., integer only
|
|
CFLAGS += -mabi=lp64# # Use LP64 ABI, i.e., 64-bit longs and pointers, 32-bit ints
|
|
CFLAGS += -Os# # Optimize for size
|
|
CFLAGS += -Wall -Wunused -O2
|
|
|
|
LDFLAGS += -T link.ld # Use the linker script
|
|
LDFLAGS += --no-dynamic-linker
|
|
LDFLAGS += -m elf64lriscv
|
|
LDFLAGS += -static
|
|
LDFLAGS += -nostdlib
|
|
LDFLAGS += -s
|
|
|
|
# Use GC=0 to disable garbage collection
|
|
ifneq ($(GC), 0)
|
|
CFLAGS += -ffreestanding
|
|
CFLAGS += -ffunction-sections -fdata-sections
|
|
CFLAGS += -Wl,--gc-sections
|
|
endif
|
|
|
|
# Debugging flags, passed as 'make DEBUG=1 <target>'
|
|
ifeq ($(DEBUG), 1)
|
|
CFLAGS += -g -O0
|
|
endif
|
|
|
|
# Assembly source files
|
|
AS_SRCS := $(wildcard *.s)
|
|
|
|
# Object files
|
|
OBJS := $(AS_SRCS:.s=.o)
|
|
|
|
# Default target
|
|
all: $(OBJS)
|
|
@$(LD) $(LDFLAGS) -o $(TARGET) $(OBJS)
|
|
@echo "LD $(OBJS)"
|
|
|
|
# Compile assembly sources
|
|
%.o: %.s
|
|
@$(CC) $(CFLAGS) -c -o $@ $<
|
|
@echo "CC $<"
|
|
|
|
# Run the binary in QEMU
|
|
run: all
|
|
@echo "To exit: Ctrl+A, X"
|
|
@$(QEMU) $(QEMU_FLAGS) -bios $(TARGET)
|
|
|
|
# View the text section of the binary
|
|
inspect: all
|
|
$(OBJDUMP) -dC $(TARGET)
|
|
|
|
sections: all
|
|
$(OBJDUMP) -h $(TARGET)
|
|
|
|
# View the disassembly
|
|
raw: all
|
|
$(OBJDUMP) -D $(TARGET)
|
|
|
|
# View the data section
|
|
data: all
|
|
$(OBJDUMP) -s $(TARGET) --section=.data
|
|
|
|
# Check the size of the compiled binary
|
|
size: all
|
|
$(SIZE) $(TARGET)
|
|
|
|
format:
|
|
clang-format -i *.s
|
|
|
|
# Clean up
|
|
clean:
|
|
rm -f $(TARGET) $(OBJS)
|