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31 | #include <arch.h> |
31 | #include <arch.h> |
32 | #include <cpu.h> |
32 | #include <cpu.h> |
33 | 33 | ||
34 | void fpu_context_save(fpu_context_t *fctx) |
34 | void fpu_context_save(fpu_context_t *fctx) |
35 | { |
35 | { |
36 | } |
- | |
37 | - | ||
38 | void fpu_context_restore(fpu_context_t *fctx) |
- | |
39 | { |
- | |
40 | if(THREAD==CPU->fpu_owner) |
- | |
41 | reset_TS_flag(); |
- | |
42 | else |
- | |
43 | set_TS_flag(); |
- | |
44 | } |
- | |
45 | - | ||
46 | - | ||
47 | void fpu_lazy_context_save(fpu_context_t *fctx) |
- | |
48 | { |
- | |
49 | /* TODO: We need malloc that allocates on 16-byte boundary !! */ |
36 | /* Align on 16-byte boundary */ |
50 | if (((__u64)fctx) & 0xf) |
37 | if (((__u64)fctx) & 0xf) |
51 | fctx = (fpu_context_t *)((((__u64)fctx) | 0xf) + 1); |
38 | fctx = (fpu_context_t *)((((__u64)fctx) | 0xf) + 1); |
52 | 39 | ||
53 | __asm__ volatile ( |
40 | __asm__ volatile ( |
54 | "fxsave %0" |
41 | "fxsave %0" |
55 | : "=m"(*fctx) |
42 | : "=m"(*fctx) |
56 | ); |
43 | ); |
57 | } |
44 | } |
58 | 45 | ||
59 | void fpu_lazy_context_restore(fpu_context_t *fctx) |
46 | void fpu_context_restore(fpu_context_t *fctx) |
60 | { |
47 | { |
61 | /* TODO: We need malloc that allocates on 16-byte boundary !! */ |
48 | /* TODO: We need malloc that allocates on 16-byte boundary !! */ |
62 | if (((__u64)fctx) & 0xf) |
49 | if (((__u64)fctx) & 0xf) |
63 | fctx = (fpu_context_t *)((((__u64)fctx) | 0xf) + 1); |
50 | fctx = (fpu_context_t *)((((__u64)fctx) | 0xf) + 1); |
64 | __asm__ volatile ( |
51 | __asm__ volatile ( |