1 files changed, 93 insertions, 0 deletions
diff --git a/sys/i386/include/reg.h b/sys/i386/include/reg.h
new file mode 100644
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+++ b/sys/i386/include/reg.h
@@ -0,0 +1,93 @@
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)reg.h	5.5 (Berkeley) 1/18/91
+ */
+
+/*
+ * Location of the users' stored
+ * registers within appropriate frame of 'trap' and 'syscall', relative to
+ * base of stack frame.
+ * Normal usage is u.u_ar0[XX] in kernel.
+ */
+
+/* When referenced during a trap/exception, registers are at these offsets */
+
+#define	tES	(0)
+#define	tDS	(1)
+#define	tEDI	(2)
+#define	tESI	(3)
+#define	tEBP	(4)
+
+#define	tEBX	(6)
+#define	tEDX	(7)
+#define	tECX	(8)
+#define	tEAX	(9)
+
+#define	tEIP	(12)
+#define	tCS	(13)
+#define	tEFLAGS	(14)
+#define	tESP	(15)
+#define	tSS	(16)
+
+/* During a system call, registers are at these offsets instead of above. */
+
+#define	sEDI	(0)
+#define	sESI	(1)
+#define	sEBP	(2)
+
+#define	sEBX	(4)
+#define	sEDX	(5)
+#define	sECX	(6)
+#define	sEAX	(7)
+#define	sEFLAGS	(8)
+#define	sEIP	(9)
+#define	sCS	(10)
+#define	sESP	(11)
+#define	sSS	(12)
+
+#define	PC	sEIP
+#define	SP	sESP
+#define	PS	sEFLAGS
+#define	R0	sEDX
+#define	R1	sECX
+/*
+ * Registers accessible to ptrace(2) syscall for debugger
+ */
+#ifdef IPCREG
+#define	NIPCREG 14
+int ipcreg[NIPCREG] =
+  { tES,tDS,tEDI,tESI,tEBP,tEBX,tEDX,tECX,tEAX,tEIP,tCS,tEFLAGS,tESP,tSS };
+#endif