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update makefile

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Freya Murphy 2024-02-01 14:43:11 -05:00
parent 192a4ccd6b
commit 341c95f535
Signed by: freya
GPG key ID: 744AB800E383AE52
4 changed files with 49 additions and 35 deletions
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22
Makefile
View file

@ -7,6 +7,7 @@ ISO_NAME=os_image.iso
CC=cc
LD=ld
AS=nasm
CFLAGS+=-std=c2x -ffreestanding -fno-stack-protector -g -Wall -Wextra -pedantic -lgcc -isystem $(INCLUDE_DIR)
CFLAGS+=-DPAGE_SIZE=4096
@ -27,29 +28,34 @@ A_OBJ=$(patsubst %.S,$(BUILD_DIR)/%.S.o,$(A_SRC))
all: $(BUILD_DIR)/$(ISO_NAME)
clean:
rm -rf $(BUILD_DIR)/*
@printf "\033[31m RM \033[0m%s\n" $(BUILD_DIR)
@rm -rf $(BUILD_DIR)/*
$(A_OBJ): $(BUILD_DIR)/%.S.o : %.S
@mkdir -p $(@D)
nasm $< -f elf64 -o $@
@printf "\033[33m AS \033[0m%s\n" $<
@nasm $< -f elf64 -o $@
$(C_OBJ): $(BUILD_DIR)/%.o : %.c
@mkdir -p $(@D)
$(CC) -c $(CFLAGS) -o $@ $<
@printf "\033[34m CC \033[0m%s\n" $<
@$(CC) -c $(CFLAGS) -o $@ $<
$(BUILD_DIR)/$(K_BIN_NAME): arch/amd64/linker.ld $(A_OBJ) $(C_OBJ) $(H_SRC) $(H_INCLUDE)
@mkdir -p $(@D)
$(LD) $(LDFLAGS) -T arch/amd64/linker.ld -o $(BUILD_DIR)/$(K_BIN_NAME) $(A_OBJ) $(C_OBJ)
@printf "\033[32m LD \033[0m%s\n" $@
@$(LD) $(LDFLAGS) --no-warn-rwx-segments -T arch/amd64/linker.ld -o $(BUILD_DIR)/$(K_BIN_NAME) $(A_OBJ) $(C_OBJ)
$(BUILD_DIR)/$(ISO_NAME): $(BUILD_DIR)/$(K_BIN_NAME) grub.cfg
@mkdir -p $(@D)
@mkdir -p $(BUILD_DIR)/iso/boot/grub
cp grub.cfg $(BUILD_DIR)/iso/boot/grub
cp $(BUILD_DIR)/$(K_BIN_NAME) $(BUILD_DIR)/iso/boot
grub-mkrescue -o $(BUILD_DIR)/$(ISO_NAME) $(BUILD_DIR)/iso
@cp grub.cfg $(BUILD_DIR)/iso/boot/grub
@cp $(BUILD_DIR)/$(K_BIN_NAME) $(BUILD_DIR)/iso/boot
@printf "\033[35m ISO \033[0m%s\n" $(BUILD_DIR)/$(ISO_NAME)
@grub-mkrescue -o $(BUILD_DIR)/$(ISO_NAME) $(BUILD_DIR)/iso 2> /dev/null
run: all
qemu-system-x86_64 \
@qemu-system-x86_64 \
-cdrom $(BUILD_DIR)/$(ISO_NAME) \
-serial stdio \
-display gtk,show-menubar=off,zoom-to-fit=on \

52
arch/amd64/linker.ld
View file

@ -1,38 +1,38 @@
ENTRY(start)
SECTIONS {
. = 1M;
kernel_start = .;
. = 1M;
.boot BLOCK(4K) : ALIGN(4K)
{
*(.multiboot)
}
kernel_start = .;
.rodata BLOCK(4K) : ALIGN(4K)
{
*(.rodata)
}
.boot BLOCK(4K) : ALIGN(4K)
{
*(.multiboot)
}
.data BLOCK(4K) : ALIGN(4K)
{
*(.data)
}
.rodata BLOCK(4K) : ALIGN(4K)
{
*(.rodata)
}
text_start = .;
.data BLOCK(4K) : ALIGN(4K)
{
*(.data)
}
.text BLOCK(4K) : ALIGN(4K)
{
*(.text)
}
text_start = .;
text_end = .;
.text BLOCK(4K) : ALIGN(4K)
{
*(.text)
}
.bss BLOCK(4K) : ALIGN(4K)
{
*(.bss)
}
text_end = .;
kernel_end = .;
.bss BLOCK(4K) : ALIGN(4K)
{
*(.bss)
}
kernel_end = .;
}

8
src/arch/amd64/paging.c
View file

@ -88,6 +88,8 @@ load_pml4(
void *phys
) {
static struct pte *pt = &paging_pt[0];
if ((uint64_t)phys >> 12 == pt->address)
return;
pt->address = (uint64_t)phys >> 12;
pt->flags = F_PRESENT | F_WRITEABLE;
invlpg(pml4_mapped);
@ -98,6 +100,8 @@ load_pdpt(
void *phys
) {
static struct pte *pt = &paging_pt[1];
if ((uint64_t)phys >> 12 == pt->address)
return;
pt->address = (uint64_t)phys >> 12;
pt->flags = F_PRESENT | F_WRITEABLE;
invlpg(pdpt_mapped);
@ -108,6 +112,8 @@ load_pd(
void *phys
) {
static struct pte *pt = &paging_pt[2];
if ((uint64_t)phys >> 12 == pt->address)
return;
pt->address = (uint64_t)phys >> 12;
pt->flags = F_PRESENT | F_WRITEABLE;
invlpg(pdpt_mapped);
@ -118,6 +124,8 @@ load_pt(
void *phys
) {
static struct pte *pt = &paging_pt[3];
if ((uint64_t)phys >> 12 == pt->address)
return;
pt->address = (uint64_t)phys >> 12;
pt->flags = F_PRESENT | F_WRITEABLE;
invlpg(pt_mapped);

2
src/kmain.c
View file

@ -16,7 +16,7 @@ void kmain(struct boot_info *info) {
*(char*)(0xB8000 + 0x146) = 'i';
while (1) {
//kprintf("ret: 0x%p\n", kalloc(2));
//kprintf("ret: 0x%p\n", kalloc(1024));
// loop so we dont halt
// this allows interrupts to fire
}