Kernel virtual mode 8086, currently disabled in GENERIC.

lots of help at c2k6 and after from toby@,
ok toby@, mickey@

1 files changed, 43 insertions, 0 deletions

diff --git a/sys/arch/i386/include/kvm86.h b/sys/arch/i386/include/kvm86.h
new file mode 100644
index 00000000000..358208200fb
--- /dev/null
+++ b/sys/arch/i386/include/kvm86.h
@@ -0,0 +1,43 @@
+/* $OpenBSD: kvm86.h,v 1.1 2006/06/13 03:01:04 gwk Exp $ */
+/*
+ * Copyright (c) 2006 Gordon Willem Klok <gwk@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef _I386_KVM86_H_
+#define _I386_KVM86_H_
+
+struct kvm86regs {
+	uint32_t eax;
+	uint32_t ebx;
+	uint32_t ecx;
+	uint32_t edx;
+	uint32_t esi;
+	uint32_t edi;
+	uint32_t eflags;
+	uint32_t es;
+};
+
+extern int kvm86_incall;
+
+void kvm86_init(void);
+void kvm86_gpfault(struct trapframe *);
+
+void *kvm86_bios_addpage(uint32_t);
+void kvm86_bios_delpage(uint32_t, void *);
+size_t kvm86_bios_read(uint32_t, char *, size_t);
+
+int kvm86_bioscall(int, struct trapframe *);
+int kvm86_simplecall(int, struct kvm86regs *);
+
+#endif