diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/sys/ucontext.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/sys/ucontext.h | 74 |
1 files changed, 33 insertions, 41 deletions
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 */ |