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Optimised start_64 vga_clear()

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max 🍓
2022-12-14 18:41:41 +00:00
parent a5c6240761
commit 48f00ba3b1
1 changed files with 4 additions and 4 deletions
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8
arch/x86_64/start_64.S
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@@ -12,11 +12,11 @@ kernel_identifier:
.section .boot.text, "ax", @progbits .section .boot.text, "ax", @progbits
vga_clear: vga_clear:
mov $0xb8000, %edi # VGA buffer mov $0xb8000, %rdi # VGA buffer
mov $0xFA0, %ecx # 4,000 bytes to clear mov $500, %rcx # 4,000 bytes to clear = 500 quadwords
mov $0x0, %eax mov $0x0, %rax
rep stosb rep stosq
ret ret