glibc/sysdeps/unix/sysv/linux/ia64/sys/rse.h
Ulrich Drepper aeba9785a6 Update.
2001-03-16  David Mosberger  <davidm@hpl.hp.com>

	* sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h (struct sigcontext):
	Drop hack that was needed for 2.1.1 kernel headers.

	* sysdeps/unix/sysv/linux/ia64/ucontext_i.h: New file.

	* sysdeps/unix/sysv/linux/ia64/sys/ucontext.h: Rewrite to make it
	overlay with kernel's "struct sigcontext".

	* sysdeps/unix/sysv/linux/ia64/Makefile (sysdep_headers): Add
	sys/rse.h for "misc" subdir.
	(sysdep_routines): Add __start_context for "stdlib" subdir.

	* sysdeps/unix/sysv/linux/ia64/sys/rse.h: New file (based on
	kernel file of the same name).

	* stdlib/Makefile (tests): Add tst-setcontext.
	* stdlib/tst-setcontext.c: New file (based on a sample program by
	Uli Drepper).

	* sysdeps/unix/sysv/linux/ia64/setcontext.S: New file.
	* sysdeps/unix/sysv/linux/ia64/getcontext.S: New file.
	* sysdeps/unix/sysv/linux/ia64/__start_context.S: New file.
	* sysdeps/unix/sysv/linux/ia64/makecontext.c: New file.

	* sysdeps/unix/sysv/linux/ia64/__longjmp.S (__longjmp): Use extr.u
	instead of shift & and.
2001-03-16 21:07:22 +00:00

79 lines
2.5 KiB
C

/* Copyright (C) 2001 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#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 */