patch-2.4.4 linux/include/asm-ia64/kregs.h

• Lines: 34
• Date: Thu Apr 5 12:51:47 2001
• Orig file: v2.4.3/linux/include/asm-ia64/kregs.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.3/linux/include/asm-ia64/kregs.h linux/include/asm-ia64/kregs.h
@@ -0,0 +1,33 @@
+#ifndef _ASM_IA64_KREGS_H
+#define _ASM_IA64_KREGS_H
+
+/*
+ * Copyright (C) 2001 Hewlett-Packard Co
+ * Copyright (C) 2001 David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+/*
+ * This file defines the kernel register usage convention used by Linux/ia64.
+ */
+
+/*
+ * Kernel registers:
+ */
+#define IA64_KR_IO_BASE		0	/* ar.k0: legacy I/O base address */
+#define IA64_KR_CURRENT_STACK	4	/* ar.k4: what's mapped in IA64_TR_CURRENT_STACK */
+#define IA64_KR_FPU_OWNER	5	/* ar.k5: fpu-owner (UP only, at the moment) */
+#define IA64_KR_CURRENT		6	/* ar.k6: "current" task pointer */
+#define IA64_KR_PT_BASE		7	/* ar.k7: page table base address (physical) */
+
+#define _IA64_KR_PASTE(x,y)	x##y
+#define _IA64_KR_PREFIX(n)	_IA64_KR_PASTE(ar.k, n)
+#define IA64_KR(n)		_IA64_KR_PREFIX(IA64_KR_##n)
+
+/*
+ * Translation registers:
+ */
+#define IA64_TR_KERNEL		0	/* itr0, dtr0: maps kernel image (code & data) */
+#define IA64_TR_PALCODE		1	/* itr1: maps PALcode as required by EFI */
+#define IA64_TR_PERCPU_DATA	1	/* dtr1: percpu data */
+#define IA64_TR_CURRENT_STACK	2	/* dtr2: maps kernel memory & register stacks */
+
+#endif /* _ASM_IA64_kREGS_H */