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author | Ulrich Drepper <drepper@redhat.com> | 2001-03-16 21:07:22 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2001-03-16 21:07:22 +0000 |
commit | aeba9785a6e2e8dca120bb0b62b74ea1eda0a4a8 (patch) | |
tree | 8438c4d6081766a1ede6c89328dfbcd389dbff82 /sysdeps/unix/sysv/linux/ia64/sys | |
parent | b8a8413c6f7970bc4d5659791c3b3670cc037578 (diff) | |
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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.
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/sys')
-rw-r--r-- | sysdeps/unix/sysv/linux/ia64/sys/rse.h | 78 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/ia64/sys/ucontext.h | 74 |
2 files changed, 111 insertions, 41 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/sys/rse.h b/sysdeps/unix/sysv/linux/ia64/sys/rse.h new file mode 100644 index 0000000000..a6ca53a5c6 --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/sys/rse.h @@ -0,0 +1,78 @@ +/* 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 */ diff --git a/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h b/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h index babb41de4b..8ca52209ba 100644 --- a/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h +++ b/sysdeps/unix/sysv/linux/ia64/sys/ucontext.h @@ -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 */ |