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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2009-11-28 17:09:38 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2009-11-28 17:09:38 +0100 |
| commit | 9e608d32e9e85246decd868f326efde66108c7f3 (patch) | |
| tree | 5fdbd40c0b0833c86447c382a8daf82e1f4ac4a5 /kern/mach_factor.c | |
| parent | 77c3d3e9505853ea2d5e1b68f7c7e6c2481cccaf (diff) | |
Add XMM FPU registers save/restore support.
* i386/include/mach/i386/fp_reg.h (struct i386_fp_regs): Invert array
indices.
(struct i386_xfp_save): New structure.
(FP_387X): New macro.
* i386/i386/thread.h (struct i386_fpsave_state): Add xfp_save_state
member, keep existing fp_save_state and fp_regs members in an unnamed
union member. Move fp_valid member to the end of the structure.
* i386/i386/fpu.h (fxsave, fxrstor): New macros.
(fpu_save_context): Use fxsave() when FPU is FXSR-capable.
* i386/i386/fpu.c: Include <i386/locore.h>
(mxcsr_feature_mask): New variable.
(fp_save, fp_load): Add declaration.
(init_fpu): Add FXSR-capable FPU detection.
(fpu_module_init): Request 16-byte alignment to zinit() for
i386_fpsave_state structures.
(twd_i387_to_fxsr, twd_fxsr_to_i387): New functions.
(fpu_set_state): Convert FPU state when FPU is FXSR-capable.
(fpu_get_state): Convert FPU state when FPU is FXSR-capable.
(fpexterrflt): Pass to i386_exception either xfp_save_state or
fp_save_state according to FPU type.
(fpastintr): Likewise.
(fp_load): Likewise. Use fxrstor() when FPU is FXSR-capable.
(fp_save): Use fxsave() when FPU is FXSR-capable.
(fp_state_alloc): Add FXSR-aware initialization.
Diffstat (limited to 'kern/mach_factor.c')
0 files changed, 0 insertions, 0 deletions