1 files changed, 120 insertions, 0 deletions
diff --git a/sysdeps/i386/sys/ucontext.h b/sysdeps/i386/sys/ucontext.h
new file mode 100644
index 0000000000..17b6b6c76b
--- /dev/null
+++ b/sysdeps/i386/sys/ucontext.h
@@ -0,0 +1,120 @@
+/* Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* System V/i386 ABI compliant context switching support.  */
+
+#ifndef _SYS_UCONTEXT_H
+#define _SYS_UCONTEXT_H	1
+
+#include <features.h>
+#include <signal.h>
+
+/* Type for general register.  */
+typedef int greg_t;
+
+/* Number of general registers.  */
+#define NGREG	19
+
+/* Container for all general registers.  */
+typedef greg_t gregset_t[NGREG];
+
+/* Number of each register is the `gregset_t' array.  */
+enum
+{
+  GS = 0,
+#define GS	GS
+  FS,
+#define FS	FS
+  ES,
+#define ES	ES
+  DS,
+#define DS	DS
+  EDI
+#define EDI	EDI
+  ESI
+#define ESI	ESI
+  EBP,
+#define EBP	EBP
+  ESP,
+#define ESP	ESP
+  EBX,
+#define EBX	EBX
+  EDX,
+#define EDX	EDX
+  ECX,
+#define ECX	ECX
+  EAX,
+#define EAX	EAX
+  TRAPNO,
+#define TRAPNO	TRAPNO
+  ERR,
+#define ERR	ERR
+  EIP,
+#define EIP	EIP
+  CS,
+#define CS	CS
+  EFL,
+#define EFL	EFL
+  UESP,
+#define UESP	UESP
+  SS
+#define SS	SS
+};
+
+/* Structure to describe FPU registers.  */
+typedef struct fpregset
+  {
+    union
+      {
+	struct fpchip_state
+	  {
+	    int state[27];
+	    int status;
+	  } fpchip_state;
+
+	struct fp_emul_space
+	  {
+	    char fp_emul[246];
+	    char fp_epad[2];
+	  } fp_emul_space;
+
+	int f_fpregs[62];
+      } fp_reg_set;
+
+    long int f_wregs[33];
+  } fpregset_t;
+
+/* Context to describe whole processor state.  */
+typedef struct
+  {
+    gregset_t gregs;
+    fpregset_t fpregs;
+  } mcontext_t;
+
+/* Userlevel context.  */
+typedef struct ucontext
+  {
+    unsigned long int uc_flags;
+    struct ucontext *uc_links;
+    __sigset_t uc_sigmask;
+    stack_t uc_stack;
+    mcontext_t uc_mcontext;
+    long int uc_filler[5];
+  } ucontext_t;
+
+#endif /* sys/ucontext.h */