7f30491ccd
After moving the the include files there were a few clean-ups: 1) Some files used #include <asm-ia64/xyz.h>, changed to <asm/xyz.h> 2) Some comments alerted maintainers to look at various header files to make matching updates if certain code were to be changed. Updated these comments to use the new include paths. 3) Some header files mentioned their own names in initial comments. Just deleted these self references. Signed-off-by: Tony Luck <tony.luck@intel.com>
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
#ifndef _ASM_IA64_RSE_H
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#define _ASM_IA64_RSE_H
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/*
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* Copyright (C) 1998, 1999 Hewlett-Packard Co
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* Copyright (C) 1998, 1999 David Mosberger-Tang <davidm@hpl.hp.com>
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*
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* Register stack engine related helper functions. This file may be
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* used in applications, so be careful about the name-space and give
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* some consideration to non-GNU C compilers (though __inline__ is
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* fine).
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*/
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static __inline__ unsigned long
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ia64_rse_slot_num (unsigned long *addr)
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{
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return (((unsigned long) addr) >> 3) & 0x3f;
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}
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/*
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* Return TRUE if ADDR is the address of an RNAT slot.
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*/
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static __inline__ unsigned long
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ia64_rse_is_rnat_slot (unsigned long *addr)
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{
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return ia64_rse_slot_num(addr) == 0x3f;
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}
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/*
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* Returns the address of the RNAT slot that covers the slot at
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* address SLOT_ADDR.
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*/
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static __inline__ unsigned long *
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ia64_rse_rnat_addr (unsigned long *slot_addr)
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{
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return (unsigned long *) ((unsigned long) slot_addr | (0x3f << 3));
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}
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/*
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* Calculate the number of registers in the dirty partition starting at BSPSTORE and
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* ending at BSP. This isn't simply (BSP-BSPSTORE)/8 because every 64th slot stores
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* ar.rnat.
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*/
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static __inline__ unsigned long
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ia64_rse_num_regs (unsigned long *bspstore, unsigned long *bsp)
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{
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unsigned long slots = (bsp - bspstore);
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return slots - (ia64_rse_slot_num(bspstore) + slots)/0x40;
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}
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/*
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* The inverse of the above: given bspstore and the number of
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* registers, calculate ar.bsp.
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*/
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static __inline__ unsigned long *
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ia64_rse_skip_regs (unsigned long *addr, long num_regs)
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{
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long delta = ia64_rse_slot_num(addr) + num_regs;
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if (num_regs < 0)
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delta -= 0x3e;
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return addr + num_regs + delta/0x3f;
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}
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#endif /* _ASM_IA64_RSE_H */
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