86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
#ifndef _ASMi386_SIGCONTEXT_H
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#define _ASMi386_SIGCONTEXT_H
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#include <linux/compiler.h>
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/*
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* As documented in the iBCS2 standard..
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*
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* The first part of "struct _fpstate" is just the normal i387
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* hardware setup, the extra "status" word is used to save the
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* coprocessor status word before entering the handler.
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*
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* Pentium III FXSR, SSE support
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* Gareth Hughes <gareth@valinux.com>, May 2000
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*
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* The FPU state data structure has had to grow to accommodate the
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* extended FPU state required by the Streaming SIMD Extensions.
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* There is no documented standard to accomplish this at the moment.
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*/
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struct _fpreg {
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unsigned short significand[4];
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unsigned short exponent;
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};
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struct _fpxreg {
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unsigned short significand[4];
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unsigned short exponent;
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unsigned short padding[3];
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};
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struct _xmmreg {
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unsigned long element[4];
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};
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struct _fpstate {
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/* Regular FPU environment */
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unsigned long cw;
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unsigned long sw;
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unsigned long tag;
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unsigned long ipoff;
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unsigned long cssel;
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unsigned long dataoff;
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unsigned long datasel;
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struct _fpreg _st[8];
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unsigned short status;
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unsigned short magic; /* 0xffff = regular FPU data only */
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/* FXSR FPU environment */
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unsigned long _fxsr_env[6]; /* FXSR FPU env is ignored */
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unsigned long mxcsr;
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unsigned long reserved;
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struct _fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */
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struct _xmmreg _xmm[8];
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unsigned long padding[56];
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};
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#define X86_FXSR_MAGIC 0x0000
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struct sigcontext {
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unsigned short gs, __gsh;
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unsigned short fs, __fsh;
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unsigned short es, __esh;
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unsigned short ds, __dsh;
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unsigned long edi;
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unsigned long esi;
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unsigned long ebp;
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unsigned long esp;
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unsigned long ebx;
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unsigned long edx;
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unsigned long ecx;
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unsigned long eax;
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unsigned long trapno;
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unsigned long err;
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unsigned long eip;
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unsigned short cs, __csh;
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unsigned long eflags;
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unsigned long esp_at_signal;
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unsigned short ss, __ssh;
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struct _fpstate __user * fpstate;
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unsigned long oldmask;
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unsigned long cr2;
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};
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#endif
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