bruhhh

kernel/.gitignore

@@ -1,4 +1,5 @@
 **/*.o
 *.img
 *.elf
+*.sym
 compile_commands.json

kernel/Makefile

@@ -1,6 +1,7 @@
 CC = $(TARGET)-gcc
 LD = $(TARGET)-ld
 AS = $(TARGET)-gcc
+OBJCOPY = $(TARGET)-objcopy
 
 KERN_WARNINGS = -Wall -Wextra -Wpedantic -Wuninitialized -Wunused-result
 KERN_FLAGS = -ffreestanding -nostartfiles -nostdlib -nodefaultlibs --std=gnu2x
@@ -8,7 +9,7 @@ MACHINE_FLAGS = -march=rv64gc -mabi=lp64 -mcmodel=medany
 PATH_FLAGS = -I./
 
 CFLAGS = ${MACHINE_FLAGS} -g -O0 ${KERN_WARNINGS} ${KERN_FLAGS} ${PATH_FLAGS}
-LDFLAGS = -m elf64lriscv --gc-sections -T rv64-sifive_u.ld
+LDFLAGS = -m elf64lriscv --gc-sections -nostdlib -T rv64-sifive_u.ld
 ASFLAGS = ${CFLAGS}
 
 .SUFFIXES: .c .o .S
@@ -19,9 +20,15 @@ ASFLAGS = ${CFLAGS}
 .S.o:
 	${AS} ${ASFLAGS} -o $@ -c $<
 
+.PHONY: all test clean
+all: kernel.elf kernel.sym
+
 kernel.elf: kernel.o crt0.o platform/FU740/uart.o platform/FU740/clock.o
 	${LD} ${LDFLAGS} -o kernel.elf kernel.o crt0.o platform/FU740/uart.o platform/FU740/clock.o
 
+kernel.sym: kernel.elf
+	${OBJCOPY} --only-keep-debug kernel.elf kernel.sym
+
 kernel.o: kernel.c
 
 platform/FU740/uart.o: platform/FU740/uart.c
@@ -30,9 +37,6 @@ platform/FU740/clock.o: platform/FU740/clock.c
 
 crt0.o: crt0.S
 
-.PHONY: all test clean
-all: kernel.img
-
 test:
 
 clean:

qemu_run.sh

@@ -15,7 +15,7 @@ kern_img=''
 while [ "${1:-}" != "" ]; do
 	case "$1" in
 		"--debug")
-			EMU_EXTRA='-D'
+			EMU_EXTRA='-S'
 			;;
 		"--dump-dts"|"--dump")
 			# shellcheck disable=SC2086