diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/fpu/types.h | 50 |
1 files changed, 30 insertions, 20 deletions
diff --git a/arch/x86/include/asm/fpu/types.h b/arch/x86/include/asm/fpu/types.h index e996023380d3..efb520dcf38e 100644 --- a/arch/x86/include/asm/fpu/types.h +++ b/arch/x86/include/asm/fpu/types.h @@ -1,3 +1,8 @@ +/* + * FPU data structures: + */ +#ifndef _ASM_X86_FPU_H +#define _ASM_X86_FPU_H #define MXCSR_DEFAULT 0x1f80 @@ -52,6 +57,9 @@ struct i387_fxsave_struct { } __attribute__((aligned(16))); +/* + * Software based FPU emulation state: + */ struct i387_soft_struct { u32 cwd; u32 swd; @@ -74,38 +82,39 @@ struct i387_soft_struct { struct ymmh_struct { /* 16 * 16 bytes for each YMMH-reg = 256 bytes */ - u32 ymmh_space[64]; + u32 ymmh_space[64]; }; /* We don't support LWP yet: */ struct lwp_struct { - u8 reserved[128]; + u8 reserved[128]; }; +/* Intel MPX support: */ struct bndreg { - u64 lower_bound; - u64 upper_bound; + u64 lower_bound; + u64 upper_bound; } __packed; struct bndcsr { - u64 bndcfgu; - u64 bndstatus; + u64 bndcfgu; + u64 bndstatus; } __packed; struct xsave_hdr_struct { - u64 xstate_bv; - u64 xcomp_bv; - u64 reserved[6]; + u64 xstate_bv; + u64 xcomp_bv; + u64 reserved[6]; } __attribute__((packed)); struct xsave_struct { - struct i387_fxsave_struct i387; - struct xsave_hdr_struct xsave_hdr; - struct ymmh_struct ymmh; - struct lwp_struct lwp; - struct bndreg bndreg[4]; - struct bndcsr bndcsr; - /* new processor state extensions will go here */ + struct i387_fxsave_struct i387; + struct xsave_hdr_struct xsave_hdr; + struct ymmh_struct ymmh; + struct lwp_struct lwp; + struct bndreg bndreg[4]; + struct bndcsr bndcsr; + /* New processor state extensions will go here. */ } __attribute__ ((packed, aligned (64))); union thread_xstate { @@ -116,9 +125,9 @@ union thread_xstate { }; struct fpu { - unsigned int last_cpu; - unsigned int has_fpu; - union thread_xstate *state; + unsigned int last_cpu; + unsigned int has_fpu; + union thread_xstate *state; /* * This counter contains the number of consecutive context switches * during which the FPU stays used. If this is over a threshold, the @@ -127,6 +136,7 @@ struct fpu { * wraps and the context switch behavior turns lazy again; this is to * deal with bursty apps that only use the FPU for a short time: */ - unsigned char counter; + unsigned char counter; }; +#endif /* _ASM_X86_FPU_H */ |