remove file

os/Makefile

-SRCS = $(wildcard *.S *.c)
-OBJS = $(addsuffix .o, $(basename $(SRCS))) 
-
-ifeq (,$(findstring link_app.o,$(OBJS)))
-	OBJS +=link_app.o
-endif
-
-# Try to infer the correct TOOLPREFIX if not set
-TOOLPREFIX = riscv64-unknown-elf-
-CC = $(TOOLPREFIX)gcc
-AS = $(TOOLPREFIX)gas
-LD = $(TOOLPREFIX)ld
-OBJCOPY = $(TOOLPREFIX)objcopy
-OBJDUMP = $(TOOLPREFIX)objdump
-PY = python3
-GDB = $(TOOLPREFIX)gdb
-
-ifndef CPUS
-CPUS := 8
-endif
-
-CFLAGS = -Wall -Werror -O -fno-omit-frame-pointer -ggdb
-CFLAGS += -MD
-CFLAGS += -mcmodel=medany
-CFLAGS += -ffreestanding -fno-common -nostdlib -mno-relax
-CFLAGS += -I.
-CFLAGS += -DNCPU=$(CPUS)
-CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
-
-# Disable PIE when possible (for Ubuntu 16.10 toolchain)
-ifneq ($(shell $(CC) -dumpspecs 2>/dev/null | grep -e '[^f]no-pie'),)
-CFLAGS += -fno-pie -no-pie
-endif
-ifneq ($(shell $(CC) -dumpspecs 2>/dev/null | grep -e '[^f]nopie'),)
-CFLAGS += -fno-pie -nopie
-endif
-
-LDFLAGS = -z max-page-size=4096
-
-link_app.o: link_app.S
-link_app.S: pack.py
-	@$(PY) pack.py
-kernel_app.ld: kernelld.py
-	@$(PY) kernelld.py
-
-kernel: $(OBJS) kernel_app.ld link_app.S
-	$(LD) $(LDFLAGS) -T kernel_app.ld -o kernel $(OBJS)
-	$(OBJDUMP) -S kernel > kernel.asm
-	$(OBJDUMP) -t kernel | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernel.sym
-
-clean: 
-	rm -f *.o *.d kernel *.sym *.asm link_app.S kernel_app.ld
-
-
-# BOARD
-BOARD		?= qemu
-SBI			?= rustsbi
-#BOOTLOADER	:= ../bootloader/$(SBI)-$(BOARD).bin
-BOOTLOADER	:= ../bootloader/fw_jump.bin
-
-QEMU = qemu-system-riscv64
-QEMUOPTS = \
-	-nographic \
-	-smp $(CPUS) \
-	-machine virt \
-	-bios $(BOOTLOADER) \
-	-kernel kernel
-
-run: kernel
-	$(QEMU) $(QEMUOPTS)
-
-# QEMU's gdb stub command line changed in 0.11
-QEMUGDB = $(shell if $(QEMU) -help | grep -q '^-gdb'; \
-	then echo "-gdb tcp::15234"; \
-	else echo "-s -p 15234"; fi)
-	
-debug: kernel .gdbinit
-	$(QEMU) $(QEMUOPTS) -S $(QEMUGDB) &
-	sleep 1
-	$(GDB)
\ No newline at end of file

os/kernelld.py

-import os
-
-TARGET_DIR = "../user/target/bin/"
-
-if __name__ == '__main__':
-    f = open("kernel_app.ld", mode="w")
-    apps = os.listdir(TARGET_DIR)
-    f.write(
-'''OUTPUT_ARCH(riscv)
-ENTRY(_entry)
-BASE_ADDRESS = 0x80200000;
-
-SECTIONS
-{
-    . = BASE_ADDRESS;
-    skernel = .;
-
-    s_text = .;
-    .text : {
-        *(.text.entry)
-        *(.text .text.*)
-        . = ALIGN(0x1000);
-        *(trampsec)
-        . = ALIGN(0x1000);
-    }
-
-    . = ALIGN(4K);
-    e_text = .;
-    s_rodata = .;
-    .rodata : {
-        *(.rodata .rodata.*)
-    }
-
-    . = ALIGN(4K);
-    e_rodata = .;
-    s_data = .;
-    .data : {
-        *(.data)
-''')
-    for (idx, _) in enumerate(apps):
-        f.write('        . = ALIGN(0x1000);\n')
-        f.write('        *(.data.app{})\n'.format(idx))
-    f.write(
-'''
-        . = ALIGN(0x1000);
-        *(.data.*)
-        *(.sdata .sdata.*)
-    }
-    
-    . = ALIGN(4K);
-    e_data = .;
-    .bss : {
-        *(.bss.stack)
-        s_bss = .;
-        *(.bss .bss.*)
-        *(.sbss .sbss.*)
-    }
-
-    . = ALIGN(4K);
-    e_bss = .;
-    ekernel = .;
-
-    /DISCARD/ : {
-        *(.eh_frame)
-    }
-}
-''')
-    f.close()
-

os/pack.py

-import os
-
-TARGET_DIR = "../user/target/bin/"
-
-if __name__ == '__main__':
-    f = open("link_app.S", mode="w")
-    apps = os.listdir(TARGET_DIR)
-    apps.sort()
-    f.write(
-'''    .align 4
-    .section .data
-    .global _app_num
-_app_num:
-    .quad {}
-'''.format(len(apps))
-    )
-
-    for (idx, _) in enumerate(apps):
-        f.write('    .quad app_{}_start\n'.format(idx))
-    f.write('    .quad app_{}_end\n'.format(len(apps) - 1))
-
-    f.write(
-'''
-    .global _app_names
-_app_names:
-''');
-
-    for app in apps:
-        app = app[:app.find('.')]
-        f.write("   .string \"" + app + "\"\n")
-
-    for (idx, app) in enumerate(apps):
-        f.write(
-'''
-    .section .data.app{0}
-    .global app_{0}_start
-app_{0}_start:
-    .incbin "{1}"
-'''.format(idx, TARGET_DIR + app)
-        )
-    f.write('app_{}_end:\n\n'.format(len(apps) - 1))
-    f.close()
\ No newline at end of file