From 05d9958f685e3f0c51be4f1128348645451e51fb Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Tue, 21 Dec 2004 08:35:58 +0000
Subject: Add support for the Analog Devices Blackfin mmuless processor

---
 libc/sysdeps/linux/bfin/sys/ucontext.h | 153 +++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100644 libc/sysdeps/linux/bfin/sys/ucontext.h

(limited to 'libc/sysdeps/linux/bfin/sys/ucontext.h')

diff --git a/libc/sysdeps/linux/bfin/sys/ucontext.h b/libc/sysdeps/linux/bfin/sys/ucontext.h
new file mode 100644
index 000000000..ac469daac
--- /dev/null
+++ b/libc/sysdeps/linux/bfin/sys/ucontext.h
@@ -0,0 +1,153 @@
+/* Copyright (C) 1997, 1999, 2001 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* System V/blackfin 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	47
+
+/* Container for all general registers.  */
+typedef greg_t gregset_t[NGREG];
+
+/* Number of each register is the `gregset_t' array.  */
+enum
+{
+  R0 = 0,
+#define R0	R0
+  R1 = 1,
+#define R1	R1
+  R2 = 2,
+#define R2	R2
+  R3 = 3,
+#define R3	R3
+  R4 = 4,
+#define R4	R4
+  R5 = 5,
+#define R5	R5
+  R6 = 6,
+#define R6	R6
+  R7 = 7,
+#define R7	R7
+  P0 = 8,
+#define P0	P0
+  P1 = 9,
+#define P1	P1
+  P2 = 10,
+#define P2	P2
+  P3 = 11,
+#define P3	P3
+  P4 = 12,
+#define P4	P4
+  P5 = 13,
+#define P5	P5
+  USP = 14,
+#define USP	USP
+  A0W = 15,
+#define A0W	A0W
+  A1W = 16,
+#define A1W	A1W
+  A0X = 17,
+#define A0X	A0X
+  A1X = 18,
+#define A1X	A1X
+  ASTAT = 19,
+#define ASTAT	ASTAT
+  RETS = 20,
+#define RETS	RETS
+  PC= 21,
+#define PC	PC
+  RETX = 22,
+#define RETX	RETX
+  FP = 23,
+#define FP	FP
+  I0 = 24,
+#define I0	I0
+  I1 = 25,
+#define I1	I1
+  I2 = 26,
+#define I2	I2
+  I3 = 27,
+#define I3	I3
+  M0 = 28,
+#define M0	M0
+  M1 = 29,
+#define M1	M1
+  M2 = 30,
+#define M2	M2
+  M3 = 31,
+#define M3	M3
+  L0 = 32,
+#define L0	L0
+  L1 = 33,
+#define L1	L1
+  L2 = 34,
+#define L2	L2
+  L3 = 35,
+#define L3	L3
+  B_0 = 36,
+#define B_0	B_0
+  B1 = 37,
+#define B1	B1
+  B2 = 38,
+#define B2	B2
+  B3 = 39,
+#define B3	B3
+  LC0 = 40,
+#define LC0	LC0
+  LC1 = 41,
+#define LC1	LC1
+  LT0 = 42,
+#define LT0	LT0
+  LT1 = 43,
+#define LT1	LT1
+  LB0 = 44,
+#define LB0	LB0
+  LB1 = 45,
+#define LB1	LB1
+  SEQSTAT = 46
+#define	SEQSTAT	SEQSTAT
+};
+
+/* Context to describe whole processor state.  */
+typedef struct
+{
+  int version;
+  gregset_t gregs;
+} mcontext_t;
+
+
+/* Userlevel context.  */
+typedef struct ucontext
+{
+  unsigned long int uc_flags;
+  struct ucontext *uc_link;
+  stack_t uc_stack;
+  mcontext_t uc_mcontext;
+  __sigset_t uc_sigmask;
+} ucontext_t;
+
+#endif /* sys/ucontext.h */
-- 
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