sysdeps/unix/sysv/linux/alpha/sys/ucontext.h

   1 /* Copyright (C) 1998-2023 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 _SYS_UCONTEXT_H
  19 #define _SYS_UCONTEXT_H 1
  20
  21 #include <features.h>
  22
  23 #include <bits/types/sigset_t.h>
  24 #include <bits/types/stack_t.h>
  25
  26
  27 #ifdef __USE_MISC
  28 # define __ctx(fld) fld
  29 #else
  30 # define __ctx(fld) __ ## fld
  31 #endif
  32
  33 /* Type for general register.  */
  34 typedef long int greg_t;
  35
  36 /* Number of general registers.  */
  37 #define __NGREG 33
  38 #ifdef __USE_MISC
  39 # define NGREG  __NGREG
  40 #endif
  41
  42 /* Container for all general registers.  */
  43 typedef greg_t gregset_t[__NGREG];
  44
  45 /* Type for floating-point register.  */
  46 typedef long int fpreg_t;
  47
  48 /* Number of general registers.  */
  49 #define __NFPREG        32
  50 #ifdef __USE_MISC
  51 # define NFPREG __NFPREG
  52 #endif
  53
  54 /* Container for all general registers.  */
  55 typedef fpreg_t fpregset_t[__NFPREG];
  56
  57
  58 /* A machine context is exactly a sigcontext.  */
  59 typedef struct
  60   {
  61     long int __ctx(sc_onstack);
  62     long int __ctx(sc_mask);
  63     long int __ctx(sc_pc);
  64     long int __ctx(sc_ps);
  65     long int __ctx(sc_regs)[32];
  66     long int __ctx(sc_ownedfp);
  67     long int __ctx(sc_fpregs)[32];
  68     unsigned long int __ctx(sc_fpcr);
  69     unsigned long int __ctx(sc_fp_control);
  70     unsigned long int __glibc_reserved1, __glibc_reserved2;
  71     unsigned long int __ctx(sc_ssize);
  72     char *__ctx(sc_sbase);
  73     unsigned long int __ctx(sc_traparg_a0);
  74     unsigned long int __ctx(sc_traparg_a1);
  75     unsigned long int __ctx(sc_traparg_a2);
  76     unsigned long int __ctx(sc_fp_trap_pc);
  77     unsigned long int __ctx(sc_fp_trigger_sum);
  78     unsigned long int __ctx(sc_fp_trigger_inst);
  79   } mcontext_t;
  80
  81 /* Userlevel context.  */
  82 typedef struct ucontext_t
  83   {
  84     unsigned long int __ctx(uc_flags);
  85     struct ucontext_t *uc_link;
  86     unsigned long __uc_osf_sigmask;
  87     stack_t uc_stack;
  88     mcontext_t uc_mcontext;
  89     sigset_t uc_sigmask;
  90   } ucontext_t;
  91
  92 #undef __ctx
  93
  94 #endif /* sys/ucontext.h */