1 /* Copyright (C) 1996-2022 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #ifndef _BITS_SIGCONTEXT_H 19 #define _BITS_SIGCONTEXT_H 1 20 21 #if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H 22 # error "Never use <bits/sigcontext.h> directly; include <signal.h> instead." 23 #endif 24 25 #define __need_size_t 26 #include <stddef.h> 27 #include <bits/sigstack.h> 28 #include <bits/types/struct_sigstack.h> 29 #include <bits/types/stack_t.h> 30 #include <bits/ss_flags.h> 31 32 struct __ia64_fpreg 33 { 34 union 35 { 36 unsigned long bits[2]; 37 } u; 38 } __attribute__ ((__aligned__ (16))); 39 40 struct sigcontext 41 { 42 unsigned long int sc_flags; /* see manifest constants below */ 43 unsigned long int sc_nat; /* bit i == 1 iff scratch reg gr[i] is a NaT */ 44 stack_t sc_stack; /* previously active stack */ 45 46 unsigned long int sc_ip; /* instruction pointer */ 47 unsigned long int sc_cfm; /* current frame marker */ 48 unsigned long int sc_um; /* user mask bits */ 49 unsigned long int sc_ar_rsc; /* register stack configuration register */ 50 unsigned long int sc_ar_bsp; /* backing store pointer */ 51 unsigned long int sc_ar_rnat; /* RSE NaT collection register */ 52 unsigned long int sc_ar_ccv; /* compare & exchange compare value register */ 53 unsigned long int sc_ar_unat; /* ar.unat of interrupted context */ 54 unsigned long int sc_ar_fpsr; /* floating-point status register */ 55 unsigned long int sc_ar_pfs; /* previous function state */ 56 unsigned long int sc_ar_lc; /* loop count register */ 57 unsigned long int sc_pr; /* predicate registers */ 58 unsigned long int sc_br[8]; /* branch registers */ 59 unsigned long int sc_gr[32]; /* general registers (static partition) */ 60 struct __ia64_fpreg sc_fr[128]; /* floating-point registers */ 61 unsigned long int sc_rbs_base;/* NULL or new base of sighandler's rbs */ 62 unsigned long int sc_loadrs; /* see description above */ 63 unsigned long int sc_ar25; /* cmp8xchg16 uses this */ 64 unsigned long int sc_ar26; /* rsvd for scratch use */ 65 unsigned long int sc_rsvd[12];/* reserved for future use */ 66 67 /* sc_mask is actually an sigset_t but we don't want to 68 * include the kernel headers here. */ 69 unsigned long int sc_mask; /* signal mask to restore after handler returns */ 70 }; 71 72 /* sc_flag bit definitions. */ 73 #define IA64_SC_FLAG_ONSTACK_BIT 0 /* is handler running on signal stack? */ 74 #define IA64_SC_FLAG_IN_SYSCALL_BIT 1 /* did signal interrupt a syscall? */ 75 #define IA64_SC_FLAG_FPH_VALID_BIT 2 /* is state in f[32]-f[127] valid? */ 76 77 #define IA64_SC_FLAG_ONSTACK (1 << IA64_SC_FLAG_ONSTACK_BIT) 78 #define IA64_SC_FLAG_IN_SYSCALL (1 << IA64_SC_FLAG_IN_SYSCALL_BIT) 79 #define IA64_SC_FLAG_FPH_VALID (1 << IA64_SC_FLAG_FPH_VALID_BIT) 80 81 #endif /* _BITS_SIGCONTEXT_H */ 82