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

   1 /* struct ucontext definition, C-SKY version.
   2    Copyright (C) 2018-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SYS_UCONTEXT_H
  20 #define _SYS_UCONTEXT_H 1
  21
  22 #include <features.h>
  23
  24 #include <bits/types/sigset_t.h>
  25 #include <bits/types/stack_t.h>
  26
  27 typedef struct
  28   {
  29     unsigned long __tls;
  30     unsigned long __lr;
  31     unsigned long __pc;
  32     unsigned long __sr;
  33     unsigned long __usp;
  34
  35     /*
  36      * a0, a1, a2, a3:
  37      * abiv1: r2, r3, r4, r5
  38      * abiv2: r0, r1, r2, r3
  39      */
  40
  41     unsigned long __orig_a0;
  42     unsigned long __a0;
  43     unsigned long __a1;
  44     unsigned long __a2;
  45     unsigned long __a3;
  46
  47     /*
  48      * ABIV2: r4 ~ r13
  49      */
  50     unsigned long __regs[10];
  51
  52     /* r16 ~ r30 */
  53     unsigned long __exregs[15];
  54
  55     unsigned long __rhi;
  56     unsigned long __rlo;
  57     unsigned long __glibc_reserved;
  58   } gregset_t;
  59
  60 typedef struct
  61   {
  62     unsigned long __vr[64];
  63     unsigned long __fcr;
  64     unsigned long __fesr;
  65     unsigned long __fid;
  66     unsigned long __glibc_reserved;
  67   } fpregset_t;
  68
  69 /* Context to describe whole processor state.  */
  70 typedef struct
  71   {
  72     gregset_t __gregs;
  73     fpregset_t __fpregs;
  74   } mcontext_t;
  75
  76 /* Userlevel context.  */
  77 typedef struct ucontext_t
  78   {
  79     unsigned long int __uc_flags;
  80     struct ucontext_t *uc_link;
  81     stack_t uc_stack;
  82     mcontext_t uc_mcontext;
  83     sigset_t uc_sigmask;
  84   } ucontext_t;
  85
  86 #undef __ctx
  87
  88
  89 #endif /* sys/ucontext.h */