1 files changed, 85 insertions, 0 deletions
diff --git a/include/asm-i386/sigcontext.h b/include/asm-i386/sigcontext.h
new file mode 100644
index 0000000..aaef089
--- /dev/null
+++ b/include/asm-i386/sigcontext.h
@@ -0,0 +1,85 @@
+#ifndef _ASMi386_SIGCONTEXT_H
+#define _ASMi386_SIGCONTEXT_H
+
+#include <linux/compiler.h>
+
+/*
+ * 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	padding[56];
+};
+
+#define X86_FXSR_MAGIC		0x0000
+
+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