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| author | grehan <grehan@FreeBSD.org> | 2012-12-12 08:35:32 +0000 |
|---|---|---|
| committer | grehan <grehan@FreeBSD.org> | 2012-12-12 08:35:32 +0000 |
| commit | aac6a44d7e468fc3fe77812ec3fe4dc5259f6499 (patch) | |
| tree | cfc33458ee502cff4aa5f87a20d9d8f2f386021b /sys/amd64/include/fpu.h | |
| parent | f10e69982d73b15600dcf8e86eae036d0886ef98 (diff) | |
| download | FreeBSD-src-aac6a44d7e468fc3fe77812ec3fe4dc5259f6499.zip FreeBSD-src-aac6a44d7e468fc3fe77812ec3fe4dc5259f6499.tar.gz | |
Implement an API to allow a hypervisor to save/restore
guest floating point state without having to know the
size of floating-point state.
Unstaticize fpurestore to allow the hypervisor to
save/restore guest state using fpusave/fpurestore
on the allocated FPU state area.
Reviewed by: kib
Obtained from: NetApp/bhyve
MFC after: 1 week
Diffstat (limited to 'sys/amd64/include/fpu.h')
| -rw-r--r-- | sys/amd64/include/fpu.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/amd64/include/fpu.h b/sys/amd64/include/fpu.h index 7d0f0ea..1ce59d0 100644 --- a/sys/amd64/include/fpu.h +++ b/sys/amd64/include/fpu.h @@ -57,6 +57,7 @@ void fpuexit(struct thread *td); int fpuformat(void); int fpugetregs(struct thread *td); void fpuinit(void); +void fpurestore(void *addr); void fpusave(void *addr); int fpusetregs(struct thread *td, struct savefpu *addr, char *xfpustate, size_t xfpustate_size); @@ -73,6 +74,10 @@ int fpu_kern_leave(struct thread *td, struct fpu_kern_ctx *ctx); int fpu_kern_thread(u_int flags); int is_fpu_kern_thread(u_int flags); +struct savefpu *fpu_save_area_alloc(void); +void fpu_save_area_free(struct savefpu *fsa); +void fpu_save_area_reset(struct savefpu *fsa); + /* * Flags for fpu_kern_alloc_ctx(), fpu_kern_enter() and fpu_kern_thread(). */ |
