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Implement bss #1

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Merged
sohnryang merged 1 commit into from
Sep 11, 2020
Merged

Implement bss #1

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10 changes: 9 additions & 1 deletion loader.s
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Original file line number Diff line number Diff line change
@@ -1,7 +1,15 @@
global loader

MAGIC_NUM equ 0x1badb002
FLAGS equ 0x0
CHKSUM equ -MAGIC_NUM
KERNEL_STACK_SIZE equ 16384

section .bss:
align 16
stack_bottom:
resb KERNEL_STACK_SIZE
stack_top:

section .text:
align 4
Expand All @@ -10,7 +18,7 @@ align 4
dd CHKSUM

loader:
mov eax, 0xdeadbeef

@sohnryang sohnryang Jul 30, 2020 •
edited
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This line is for testing whether the bootloader worked, and 0xdeadbeef was just a joke. I think this line should be kept for now. 🙃

mov esp, stack_top

.loop:
jmp .loop