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| author | Tyler Murphy <=> | 2023-07-16 02:54:32 -0400 |
|---|---|---|
| committer | Tyler Murphy <=> | 2023-07-16 02:54:32 -0400 |
| commit | fbf131b5c043b27e0b1543374bb144e3e426f723 (patch) | |
| tree | 07f0ab2fc107b36621d5ae95480e6a91e332548b /kernel/src/cpu/sse.asm | |
| download | finix-fbf131b5c043b27e0b1543374bb144e3e426f723.tar.gz finix-fbf131b5c043b27e0b1543374bb144e3e426f723.tar.bz2 finix-fbf131b5c043b27e0b1543374bb144e3e426f723.zip | |
initial
Diffstat (limited to 'kernel/src/cpu/sse.asm')
| -rw-r--r-- | kernel/src/cpu/sse.asm | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/kernel/src/cpu/sse.asm b/kernel/src/cpu/sse.asm new file mode 100644 index 0000000..e7b5a99 --- /dev/null +++ b/kernel/src/cpu/sse.asm @@ -0,0 +1,22 @@ +global sse_init + +sse_init: + mov eax, 0x1 + cpuid + test edx, 1<<25 + jmp no_sse + + mov eax, cr0 + and ax, 0xFFFB + or ax, 0x2 + mov cr0, eax + mov eax, cr4 + or ax, 3 << 9 + mov cr4, eax + + mov eax, 0 + ret + +no_sse: + mov eax, 1 + ret |