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| author | Freya Murphy <freya@freyacat.org> | 2025-04-16 16:48:12 -0400 |
|---|---|---|
| committer | Freya Murphy <freya@freyacat.org> | 2025-04-16 16:48:12 -0400 |
| commit | a18fd19647c08e8467440e0262b725e17ff5c5b0 (patch) | |
| tree | 18a5cde3b215ed44034a0b280817b73ef98c89d1 /kernel/cpu/fpu.c | |
| parent | update build.zig (diff) | |
| download | comus-a18fd19647c08e8467440e0262b725e17ff5c5b0.tar.gz comus-a18fd19647c08e8467440e0262b725e17ff5c5b0.tar.bz2 comus-a18fd19647c08e8467440e0262b725e17ff5c5b0.zip | |
add support for cpu feature checking, see, and avx
Diffstat (limited to 'kernel/cpu/fpu.c')
| -rw-r--r-- | kernel/cpu/fpu.c | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/kernel/cpu/fpu.c b/kernel/cpu/fpu.c deleted file mode 100644 index cafe6e5..0000000 --- a/kernel/cpu/fpu.c +++ /dev/null @@ -1,13 +0,0 @@ -#include <lib.h> - -#include "fpu.h" - -void fpu_init(void) -{ - size_t cr4; - uint16_t cw = 0x37F; - __asm__ volatile("mov %%cr4, %0" : "=r"(cr4)); - cr4 |= 0x200; - __asm__ volatile("mov %0, %%cr4" ::"r"(cr4)); - __asm__ volatile("fldcw %0" ::"m"(cw)); -} |