diff options
Diffstat (limited to 'arch/x86/include/asm/sigcontext.h')
| -rw-r--r-- | arch/x86/include/asm/sigcontext.h | 216 |
1 files changed, 1 insertions, 215 deletions
diff --git a/arch/x86/include/asm/sigcontext.h b/arch/x86/include/asm/sigcontext.h index 5ca71c0..9dfce4e 100644 --- a/arch/x86/include/asm/sigcontext.h +++ b/arch/x86/include/asm/sigcontext.h @@ -1,104 +1,9 @@ #ifndef _ASM_X86_SIGCONTEXT_H #define _ASM_X86_SIGCONTEXT_H -#include <linux/compiler.h> -#include <linux/types.h> - -#define FP_XSTATE_MAGIC1 0x46505853U -#define FP_XSTATE_MAGIC2 0x46505845U -#define FP_XSTATE_MAGIC2_SIZE sizeof(FP_XSTATE_MAGIC2) - -/* - * bytes 464..511 in the current 512byte layout of fxsave/fxrstor frame - * are reserved for SW usage. On cpu's supporting xsave/xrstor, these bytes - * are used to extended the fpstate pointer in the sigcontext, which now - * includes the extended state information along with fpstate information. - * - * Presence of FP_XSTATE_MAGIC1 at the beginning of this SW reserved - * area and FP_XSTATE_MAGIC2 at the end of memory layout - * (extended_size - FP_XSTATE_MAGIC2_SIZE) indicates the presence of the - * extended state information in the memory layout pointed by the fpstate - * pointer in sigcontext. - */ -struct _fpx_sw_bytes { - __u32 magic1; /* FP_XSTATE_MAGIC1 */ - __u32 extended_size; /* total size of the layout referred by - * fpstate pointer in the sigcontext. - */ - __u64 xstate_bv; - /* feature bit mask (including fp/sse/extended - * state) that is present in the memory - * layout. - */ - __u32 xstate_size; /* actual xsave state size, based on the - * features saved in the layout. - * 'extended_size' will be greater than - * 'xstate_size'. - */ - __u32 padding[7]; /* for future use. */ -}; +#include <uapi/asm/sigcontext.h> #ifdef __i386__ -/* - * As documented in the iBCS2 standard.. - * - * The first part of "struct _fpstate" is just the normal i387 - * hardware setup, the extra "status" word is used to save the - * coprocessor status word before entering the handler. - * - * Pentium III FXSR, SSE support - * Gareth Hughes <gareth@valinux.com>, May 2000 - * - * The FPU state data structure has had to grow to accommodate the - * extended FPU state required by the Streaming SIMD Extensions. - * There is no documented standard to accomplish this at the moment. - */ -struct _fpreg { - unsigned short significand[4]; - unsigned short exponent; -}; - -struct _fpxreg { - unsigned short significand[4]; - unsigned short exponent; - unsigned short padding[3]; -}; - -struct _xmmreg { - unsigned long element[4]; -}; - -struct _fpstate { - /* Regular FPU environment */ - unsigned long cw; - unsigned long sw; - unsigned long tag; - unsigned long ipoff; - unsigned long cssel; - unsigned long dataoff; - unsigned long datasel; - struct _fpreg _st[8]; - unsigned short status; - unsigned short magic; /* 0xffff = regular FPU data only */ - - /* FXSR FPU environment */ - unsigned long _fxsr_env[6]; /* FXSR FPU env is ignored */ - unsigned long mxcsr; - unsigned long reserved; - struct _fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ - struct _xmmreg _xmm[8]; - unsigned long padding1[44]; - - union { - unsigned long padding2[12]; - struct _fpx_sw_bytes sw_reserved; /* represents the extended - * state info */ - }; -}; - -#define X86_FXSR_MAGIC 0x0000 - -#ifdef __KERNEL__ struct sigcontext { unsigned short gs, __gsh; unsigned short fs, __fsh; @@ -131,62 +36,7 @@ struct sigcontext { unsigned long oldmask; unsigned long cr2; }; -#else /* __KERNEL__ */ -/* - * User-space might still rely on the old definition: - */ -struct sigcontext { - unsigned short gs, __gsh; - unsigned short fs, __fsh; - unsigned short es, __esh; - unsigned short ds, __dsh; - unsigned long edi; - unsigned long esi; - unsigned long ebp; - unsigned long esp; - unsigned long ebx; - unsigned long edx; - unsigned long ecx; - unsigned long eax; - unsigned long trapno; - unsigned long err; - unsigned long eip; - unsigned short cs, __csh; - unsigned long eflags; - unsigned long esp_at_signal; - unsigned short ss, __ssh; - struct _fpstate __user *fpstate; - unsigned long oldmask; - unsigned long cr2; -}; -#endif /* !__KERNEL__ */ - #else /* __i386__ */ - -/* FXSAVE frame */ -/* Note: reserved1/2 may someday contain valuable data. Always save/restore - them when you change signal frames. */ -struct _fpstate { - __u16 cwd; - __u16 swd; - __u16 twd; /* Note this is not the same as the - 32bit/x87/FSAVE twd */ - __u16 fop; - __u64 rip; - __u64 rdp; - __u32 mxcsr; - __u32 mxcsr_mask; - __u32 st_space[32]; /* 8*16 bytes for each FP-reg */ - __u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg */ - __u32 reserved2[12]; - union { - __u32 reserved3[12]; - struct _fpx_sw_bytes sw_reserved; /* represents the extended - * state information */ - }; -}; - -#ifdef __KERNEL__ struct sigcontext { unsigned long r8; unsigned long r9; @@ -225,69 +75,5 @@ struct sigcontext { void __user *fpstate; /* zero when no FPU/extended context */ unsigned long reserved1[8]; }; -#else /* __KERNEL__ */ -/* - * User-space might still rely on the old definition: - */ -struct sigcontext { - __u64 r8; - __u64 r9; - __u64 r10; - __u64 r11; - __u64 r12; - __u64 r13; - __u64 r14; - __u64 r15; - __u64 rdi; - __u64 rsi; - __u64 rbp; - __u64 rbx; - __u64 rdx; - __u64 rax; - __u64 rcx; - __u64 rsp; - __u64 rip; - __u64 eflags; /* RFLAGS */ - __u16 cs; - __u16 gs; - __u16 fs; - __u16 __pad0; - __u64 err; - __u64 trapno; - __u64 oldmask; - __u64 cr2; - struct _fpstate __user *fpstate; /* zero when no FPU context */ -#ifdef __ILP32__ - __u32 __fpstate_pad; -#endif - __u64 reserved1[8]; -}; -#endif /* !__KERNEL__ */ - #endif /* !__i386__ */ - -struct _xsave_hdr { - __u64 xstate_bv; - __u64 reserved1[2]; - __u64 reserved2[5]; -}; - -struct _ymmh_state { - /* 16 * 16 bytes for each YMMH-reg */ - __u32 ymmh_space[64]; -}; - -/* - * Extended state pointed by the fpstate pointer in the sigcontext. - * In addition to the fpstate, information encoded in the xstate_hdr - * indicates the presence of other extended state information - * supported by the processor and OS. - */ -struct _xstate { - struct _fpstate fpstate; - struct _xsave_hdr xstate_hdr; - struct _ymmh_state ymmh; - /* new processor state extensions go here */ -}; - #endif /* _ASM_X86_SIGCONTEXT_H */ |