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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.
This commit is contained in:
Ulrich Drepper
2001-03-16 21:07:22 +00:00
parent b8a8413c6f
commit aeba9785a6
15 changed files with 771 additions and 52 deletions
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74
sysdeps/unix/sysv/linux/ia64/sys/ucontext.h
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@ -1,4 +1,4 @@
/* Copyright (C) 1998, 2000 Free Software Foundation, Inc.
/* Copyright (C) 1998, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -24,48 +24,40 @@
#include <bits/sigstack.h>
typedef struct
{
/* Place-holder for interrupt collection state. */
long int ics_placeholder[15];
unsigned long int ar_fpsr; /* Floating point status. */
unsigned long int gp; /* Global data pointer (gr1). */
/* scratch registers: */
unsigned long int gr8, gr9, gr10, gr11, gr13, gr14, gr15;
unsigned long int gr16, gr17, gr18, gr19, gr20, gr21, gr22, gr23;
unsigned long int gr24, gr25, gr26, gr27, gr28, gr29, gr30, gr31;
unsigned long int ar_unat;
unsigned long int ar_ec;
unsigned long int ar_ccv;
/* RSE state: */
unsigned long int ar_bsp_base; /* Location of RSE spill area. */
unsigned long int ar_pfs;
unsigned long int ar_rsc;
unsigned long int ar_bspstore;
unsigned long int ar_rnat;
/* Misc. state: */
unsigned long int dirty; /* BSP - BSPSTORE */
unsigned long int cr_tpr; /* Hw interrupt mask register. */
unsigned long int tpdp; /* thread private data pointer. */
unsigned long int br_6, br_7;
/* Argument regs (gr32-gr39): */
unsigned long int arg0, arg1, arg2, arg3;
unsigned long int arg4, arg5, arg6, arg7;
unsigned long int ss_flags; /* Save state flags. */
unsigned long int br_1, br_2, br_3, br_4, br_5; /* Branch registers. */
unsigned long int p_regs; /* Predicates. */
} mcontext_t;
/*
* These are here mostly for backwards compatibility with older Unices.
* IA-64 Linux does not distinguish between "struct sigcontext" and
* "ucontext_t" as all the necessary info is inside the former.
*/
typedef struct sigcontext mcontext_t;
#ifdef __GNUC__
# define _SC_GR0_OFFSET \
(((char *) &((struct sigcontext *) 0)->sc_gr[0]) - (char *) 0)
#else
# define _SC_GR0_OFFSET 0xc8 /* pray that this is correct... */
#endif
typedef struct ucontext
{
mcontext_t uc_mcontext; /* saved machine state */
int uc_spares[8]; /* room to grow... */
unsigned int uc_created_by_getcontext: 1;
unsigned int uc_reserved_flags: 31;
struct ucontext *uc_link;
__sigset_t uc_sigmask;
stack_t uc_stack;
} ucontext_t;
{
union
{
mcontext_t _mc;
struct
{
unsigned long _pad[_SC_GR0_OFFSET/8];
struct ucontext *_link; /* this should overlay sc_gr[0] */
}
_uc;
}
_u;
}
ucontext_t;
#define uc_mcontext _u._mc
#define uc_sigmask _u._mc.sc_sigmask
#define uc_stack _u._mc.sc_stack
#define uc_link _u._uc._link
#endif /* sys/ucontext.h */