Viewing file:  kregs.h (1.16 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
#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_TSSD 1 /* ar.k1: IVE uses this as the TSSD */
#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's memory- & register-stacks */
#endif /* _ASM_IA64_kREGS_H */
|