some more, tag part doesn't work

makefile

@@ -11,7 +11,9 @@ kernel: obj out
 	gcc -c src/kernel/mem.c   -o obj/kmem.o   -ffreestanding -nostdlib -m32
 	gcc -c src/kernel/proc.c  -o obj/kproc.o  -ffreestanding -nostdlib -m32
 	gcc -c src/kernel/vga.c   -o obj/kvga.o   -ffreestanding -nostdlib -m32
-	ld obj/k*.o -o out/kernel.elf -T src/kernel/link.ld -s --orphan-handling=discard -m elf_i386
+	ld obj/kstub.o obj/kfiles.o obj/kmain.o obj/kmem.o obj/kproc.o obj/kvga.o \
+		-o out/kernel.elf -T src/kernel/link.ld -s --orphan-handling=discard -melf_i386
+
 
 clean:
 	rm -r obj out

src/kernel/link.ld

@@ -1,3 +1,4 @@
+ENTRY(_start)
 SECTIONS {
   . = 0x01000000;
   .mb_header : ALIGN(8)   { *(.mb_header) }

src/kernel/main.c

@@ -79,12 +79,17 @@ bool have_boot_device = false;
 bool have_mmap = false;
 
 enum error_codes {
-  NO_BOOT_DEVICE = 0,
-  NO_MMAP        = 1,
-  INSUFF_MEMORY  = 2
+  NO_BOOT_DEVICE = 000000000000,
+  NO_MMAP        = 000000000001,
+  INSUFF_MEMORY  = 000000000002
 };
 
 uint32_t main(void) {
+  for (uint32_t *i = (uint32_t *)VGA_BUFFER; i < (uint32_t *)0x000b8fa0; ++i)
+    *i = 0x70207020;
+
+  put_sz("Starting...\n");
+
   uint32_t info_size = *(uint32_t *)info_pointer;
   struct tag_start *tag_pointer = (struct tag_start *)(info_pointer + 2);
 
@@ -196,7 +201,6 @@ uint32_t main(void) {
   if (!((proc_table = allocate_block(sizeof(struct proc_info) * 65536, KERNEL)) &&
         (file_table = allocate_block(sizeof(struct file_info) * 65536, KERNEL))))
     return INSUFF_MEMORY;
-  ;
 
   put_sz("Welcome to Portland version 0.0.9!\n");
   while (1)

src/kernel/stub.asm

@@ -34,13 +34,14 @@ mb_end:
 
 section .text
 bits 32
+global _start
 _start:
   mov dword [info_pointer], ebx
   mov esp, stack
   call main
   mov edx, eax
 
-  mov eax, 0x20f0_20f0
+  mov eax, 0x4720_4720
   mov ebx, 0x000b_8000
   mov ecx, 0x000b_8fa0
 clear_screen_loop:
@@ -49,11 +50,12 @@ clear_screen_loop:
   test ebx, ecx
   jne clear_screen_loop
 
-  mov dword [0x000b_8000], 0xf072_f045
-  mov dword [0x000b_8004], 0xf06f_f072
-  mov dword [0x000b_8008], 0xf020_f072
+  mov dword [0x000b_8000], 0x4772_4745
+  mov dword [0x000b_8004], 0x476f_4772
+  mov dword [0x000b_8008], 0x4720_4772
 
-  mov ebx, 0x000b_8022
+  mov ebx, 0x000b_8020
+  mov ecx, 0x000b_800a
 error_number_loop:
   mov al, dl
   and al, 0x07
@@ -61,7 +63,7 @@ error_number_loop:
   mov byte [ebx], al
   sub ebx, 2
   shr edx, 3
-  test ebx, 0x000b_800a
+  test ebx, ecx
   jne error_number_loop
 
   cli

src/kernel/vga.c

@@ -21,7 +21,7 @@ OF THIS SOFTWARE.
 #include <stdbool.h>
 
 uint16_t cursor_pos = 0;
-uint8_t color = 0xf0;
+uint8_t color = 0x70;
 #define cols 80
 #define rows 25