1 /* Copyright (C) 1996, 1997, 1998, 2000, 2001, 2003, 2004 2 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 Contributed by Jes Sorensen <jes@linuxcare.com>, July 2000 5 6 The GNU C Library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 The GNU C Library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with the GNU C Library; if not, see 18 <http://www.gnu.org/licenses/>. */ 19 20 #if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H 21 # error "Never use <bits/sigcontext.h> directly; include <signal.h> instead." 22 #endif 23 24 #ifndef _BITS_SIGCONTEXT_H 25 #define _BITS_SIGCONTEXT_H 1 26 27 #define __need_size_t 28 #include <stddef.h> 29 #include <bits/sigstack.h> 30 31 struct ia64_fpreg 32 { 33 union 34 { 35 unsigned long bits[2]; 36 } u; 37 } __attribute__ ((aligned (16))); 38 39 struct sigcontext 40 { 41 unsigned long int sc_flags; /* see manifest constants below */ 42 unsigned long int sc_nat; /* bit i == 1 iff scratch reg gr[i] is a NaT */ 43 stack_t sc_stack; /* previously active stack */ 44 45 unsigned long int sc_ip; /* instruction pointer */ 46 unsigned long int sc_cfm; /* current frame marker */ 47 unsigned long int sc_um; /* user mask bits */ 48 unsigned long int sc_ar_rsc; /* register stack configuration register */ 49 unsigned long int sc_ar_bsp; /* backing store pointer */ 50 unsigned long int sc_ar_rnat; /* RSE NaT collection register */ 51 unsigned long int sc_ar_ccv; /* compare & exchange compare value register */ 52 unsigned long int sc_ar_unat; /* ar.unat of interrupted context */ 53 unsigned long int sc_ar_fpsr; /* floating-point status register */ 54 unsigned long int sc_ar_pfs; /* previous function state */ 55 unsigned long int sc_ar_lc; /* loop count register */ 56 unsigned long int sc_pr; /* predicate registers */ 57 unsigned long int sc_br[8]; /* branch registers */ 58 unsigned long int sc_gr[32]; /* general registers (static partition) */ 59 struct ia64_fpreg sc_fr[128]; /* floating-point registers */ 60 unsigned long int sc_rbs_base;/* NULL or new base of sighandler's rbs */ 61 unsigned long int sc_loadrs; /* see description above */ 62 unsigned long int sc_ar25; /* cmp8xchg16 uses this */ 63 unsigned long int sc_ar26; /* rsvd for scratch use */ 64 unsigned long int sc_rsvd[12];/* reserved for future use */ 65 66 /* sc_mask is actually an sigset_t but we don't want to 67 * include the kernel headers here. */ 68 unsigned long int sc_mask; /* signal mask to restore after handler returns */ 69 }; 70 71 /* sc_flag bit definitions. */ 72 #define IA64_SC_FLAG_ONSTACK_BIT 0 /* is handler running on signal stack? */ 73 #define IA64_SC_FLAG_IN_SYSCALL_BIT 1 /* did signal interrupt a syscall? */ 74 #define IA64_SC_FLAG_FPH_VALID_BIT 2 /* is state in f[32]-f[127] valid? */ 75 76 #define IA64_SC_FLAG_ONSTACK (1 << IA64_SC_FLAG_ONSTACK_BIT) 77 #define IA64_SC_FLAG_IN_SYSCALL (1 << IA64_SC_FLAG_IN_SYSCALL_BIT) 78 #define IA64_SC_FLAG_FPH_VALID (1 << IA64_SC_FLAG_FPH_VALID_BIT) 79 80 #endif /* _BITS_SIGCONTEXT_H */ 81