1 files changed, 75 insertions, 0 deletions

diff --git a/arch/x86/include/asm/sigcontext32.h b/arch/x86/include/asm/sigcontext32.h
new file mode 100644
index 000000000000..8c347032c2f2
--- /dev/null
+++ b/arch/x86/include/asm/sigcontext32.h
@@ -0,0 +1,75 @@
+#ifndef ASM_X86__SIGCONTEXT32_H
+#define ASM_X86__SIGCONTEXT32_H
+
+/* signal context for 32bit programs. */
+
+#define X86_FXSR_MAGIC          0x0000
+
+struct _fpreg {
+        unsigned short significand[4];
+        unsigned short exponent;
+};
+
+struct _fpxreg {
+        unsigned short significand[4];
+        unsigned short exponent;
+        unsigned short padding[3];
+};
+
+struct _xmmreg {
+        __u32   element[4];
+};
+
+/* FSAVE frame with extensions */
+struct _fpstate_ia32 {
+        /* Regular FPU environment */
+        __u32   cw;
+        __u32   sw;
+        __u32   tag;    /* not compatible to 64bit twd */
+        __u32   ipoff;
+        __u32   cssel;
+        __u32   dataoff;
+        __u32   datasel;
+        struct _fpreg   _st[8];
+        unsigned short  status;
+        unsigned short  magic;          /* 0xffff = regular FPU data only */
+
+        /* FXSR FPU environment */
+        __u32   _fxsr_env[6];
+        __u32   mxcsr;
+        __u32   reserved;
+        struct _fpxreg  _fxsr_st[8];
+        struct _xmmreg  _xmm[8];        /* It's actually 16 */
+        __u32   padding[44];
+        union {
+                __u32 padding2[12];
+                struct _fpx_sw_bytes sw_reserved;
+        };
+};
+
+struct sigcontext_ia32 {
+       unsigned short gs, __gsh;
+       unsigned short fs, __fsh;
+       unsigned short es, __esh;
+       unsigned short ds, __dsh;
+       unsigned int di;
+       unsigned int si;
+       unsigned int bp;
+       unsigned int sp;
+       unsigned int bx;
+       unsigned int dx;
+       unsigned int cx;
+       unsigned int ax;
+       unsigned int trapno;
+       unsigned int err;
+       unsigned int ip;
+       unsigned short cs, __csh;
+       unsigned int flags;
+       unsigned int sp_at_signal;
+       unsigned short ss, __ssh;
+       unsigned int fpstate;            /* really (struct _fpstate_ia32 *) */
+       unsigned int oldmask;
+       unsigned int cr2;
+};
+
+#endif /* ASM_X86__SIGCONTEXT32_H */