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6f52b16c5b
Many user space API headers are missing licensing information, which makes it hard for compliance tools to determine the correct license. By default are files without license information under the default license of the kernel, which is GPLV2. Marking them GPLV2 would exclude them from being included in non GPLV2 code, which is obviously not intended. The user space API headers fall under the syscall exception which is in the kernels COPYING file: NOTE! This copyright does *not* cover user programs that use kernel services by normal system calls - this is merely considered normal use of the kernel, and does *not* fall under the heading of "derived work". otherwise syscall usage would not be possible. Update the files which contain no license information with an SPDX license identifier. The chosen identifier is 'GPL-2.0 WITH Linux-syscall-note' which is the officially assigned identifier for the Linux syscall exception. SPDX license identifiers are a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. See the previous patch in this series for the methodology of how this patch was researched. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#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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