mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/* Copyright (C) 2001-2014 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _ia64_rse_h
|
|
#define _ia64_rse_h
|
|
|
|
#include <features.h>
|
|
|
|
/* Register stack engine related helper functions. This file may be
|
|
used in applications, so be careful about the name-space and give
|
|
some consideration to non-GNU C compilers (though __inline is
|
|
fine). */
|
|
|
|
static __inline unsigned long
|
|
ia64_rse_slot_num (unsigned long *addr)
|
|
{
|
|
return (((unsigned long) addr) >> 3) & 0x3f;
|
|
}
|
|
|
|
/* Return TRUE if ADDR is the address of an RNAT slot. */
|
|
|
|
static __inline unsigned long
|
|
ia64_rse_is_rnat_slot (unsigned long *addr)
|
|
{
|
|
return ia64_rse_slot_num (addr) == 0x3f;
|
|
}
|
|
|
|
/* Returns the address of the RNAT slot that covers the slot at
|
|
address SLOT_ADDR. */
|
|
|
|
static __inline unsigned long *
|
|
ia64_rse_rnat_addr (unsigned long *slot_addr)
|
|
{
|
|
return (unsigned long *) ((unsigned long) slot_addr | (0x3f << 3));
|
|
}
|
|
|
|
/* Calcuate the number of registers in the dirty partition starting at
|
|
BSPSTORE with a size of DIRTY bytes. This isn't simply DIRTY
|
|
divided by eight because the 64th slot is used to store ar.rnat. */
|
|
|
|
static __inline unsigned long
|
|
ia64_rse_num_regs (unsigned long *bspstore, unsigned long *bsp)
|
|
{
|
|
unsigned long slots = (bsp - bspstore);
|
|
|
|
return slots - (ia64_rse_slot_num(bspstore) + slots)/0x40;
|
|
}
|
|
|
|
/* The inverse of the above: given bspstore and the number of
|
|
registers, calculate ar.bsp. */
|
|
|
|
static __inline unsigned long *
|
|
ia64_rse_skip_regs (unsigned long *addr, long num_regs)
|
|
{
|
|
long delta = ia64_rse_slot_num(addr) + num_regs;
|
|
|
|
if (num_regs < 0)
|
|
delta -= 0x3e;
|
|
return addr + num_regs + delta/0x3f;
|
|
}
|
|
|
|
#endif /* _ia64_rse_h */
|