From f2eb3a78c7b69c4b8e118d91327cc5c1016481fc Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sun, 28 Aug 2022 22:23:05 +0200
Subject: kernel/amd64: SSE support

---
 src/kernel/arch/amd64/32/boot.s | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/kernel/arch/amd64/32')

diff --git a/src/kernel/arch/amd64/32/boot.s b/src/kernel/arch/amd64/32/boot.s
index 0621038..b0808d3 100644
--- a/src/kernel/arch/amd64/32/boot.s
+++ b/src/kernel/arch/amd64/32/boot.s
@@ -17,7 +17,7 @@ _start:
 	jz panic_early
 
 	mov %cr4, %eax
-	or $(1<<5), %eax // PAE
+	or $(1<<5 | 1<<9 | 1<<10), %eax // PAE | SSE | SSE
 	mov %eax, %cr4
 
 	call pml4_identity_init
@@ -30,7 +30,8 @@ _start:
 	wrmsr
 
 	mov %cr0, %eax
-	or $0x80000000, %eax
+	or $0x80000002, %eax // enable paging, coprocessor monitoring
+	and $(~4), %eax // disable coprocessor emulation
 	mov %eax, %cr0
 
 	call gdt_init
-- 
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