D7net
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
usr
/
local
/
ssl
/
include
/
asm
/
Filename :
sigcontext.h
back
Copy
#ifndef _ASM_X86_SIGCONTEXT_H #define _ASM_X86_SIGCONTEXT_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. */ }; #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 /* * 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 *fpstate; unsigned long oldmask; unsigned long cr2; }; #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 */ }; }; /* * 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 *fpstate; /* zero when no FPU context */ #ifdef __ILP32__ __u32 __fpstate_pad; #endif __u64 reserved1[8]; }; #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 */