an amd64 arch support.

hacked by art@ from netbsd sources and then later debugged
by me into the shape where it can host itself.
no bootloader yet as needs redoing from the
recent advanced i386 sources (anyone? ;)

1 files changed, 108 insertions, 0 deletions

diff --git a/sys/arch/amd64/include/mcontext.h b/sys/arch/amd64/include/mcontext.h
new file mode 100644
index 00000000000..ec1ed5f816c
--- /dev/null
+++ b/sys/arch/amd64/include/mcontext.h
@@ -0,0 +1,108 @@
+/*	$OpenBSD: mcontext.h,v 1.1 2004/01/28 01:39:39 mickey Exp $	*/
+/*	$NetBSD: mcontext.h,v 1.1 2003/04/26 18:39:44 fvdl Exp $	*/
+
+/*-
+ * Copyright (c) 1999 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Klaus Klein.
+ *
+ * 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 NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#ifndef _AMD64_MCONTEXT_H_
+#define _AMD64_MCONTEXT_H_
+
+/*
+ * Layout of mcontext_t according to the System V Application Binary Interface,
+ * Intel386(tm) Architecture Processor Supplement, Fourth Edition.
+ */  
+
+/*
+ * General register state
+ */
+#define _NGREG		26
+typedef	long		__greg_t;
+typedef	__greg_t	__gregset_t[_NGREG];
+
+/*
+ * This is laid out to match trapframe and intrframe (see <machine/frame.h>).
+ * Hence, memcpy between gregs and a trapframe is possible.
+ */
+#define _REG_RDI	0
+#define _REG_RSI	1
+#define _REG_RDX	2
+#define _REG_RCX	3
+#define _REG_R8		4
+#define _REG_R9		5
+#define _REG_R10	6
+#define _REG_R11	7
+#define _REG_R12	8
+#define _REG_R13	9
+#define _REG_R14	10
+#define _REG_R15	11
+#define _REG_RBP	12
+#define _REG_RBX	13
+#define _REG_RAX	14
+#define _REG_GS		15
+#define _REG_FS		16
+#define _REG_ES		17
+#define _REG_DS		18
+#define _REG_TRAPNO	19
+#define _REG_ERR	20
+#define _REG_RIP	21
+#define _REG_CS		22
+#define _REG_RFL	23
+#define _REG_URSP	24
+#define _REG_SS		25
+
+/*
+ * Floating point register state
+ */
+typedef char __fpregset_t[512];
+
+/*
+ * The padding below is to make __fpregs have a 16-byte aligned offset
+ * within ucontext_t.
+ */
+
+typedef struct {
+	__gregset_t	__gregs;
+	long 		__pad;
+	__fpregset_t	__fpregs;
+} mcontext_t;
+
+#define _UC_UCONTEXT_ALIGN	(~0xf)
+
+#ifdef _KERNEL
+#define _UC_MACHINE_SP(uc)	((uc)->uc_mcontext.__gregs[_REG_URSP])
+#endif
+
+#endif	/* !_AMD64_MCONTEXT_H_ */