release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/sysroot/usr/include/sys/ucontext.h

   1 /* Copyright (C) 1998, 1999, 2001, 2006 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /* System V/ARM ABI compliant context switching support.  */
  20
  21 #ifndef _SYS_UCONTEXT_H
  22 #define _SYS_UCONTEXT_H 1
  23
  24 #include <features.h>
  25 #include <signal.h>
  26 #include <sys/procfs.h>
  27
  28 /* We need the signal context definitions even if they are not used
  29    included in <signal.h>.  */
  30 #include <bits/sigcontext.h>
  31
  32 typedef int greg_t;
  33
  34 /* Number of general registers.  */
  35 #define NGREG   18
  36
  37 /* Container for all general registers.  */
  38 typedef elf_gregset_t gregset_t;
  39
  40 /* Number of each register is the `gregset_t' array.  */
  41 enum
  42 {
  43   R0 = 0,
  44 #define R0      R0
  45   R1 = 1,
  46 #define R1      R1
  47   R2 = 2,
  48 #define R2      R2
  49   R3 = 3,
  50 #define R3      R3
  51   R4 = 4,
  52 #define R4      R4
  53   R5 = 5,
  54 #define R5      R5
  55   R6 = 6,
  56 #define R6      R6
  57   R7 = 7,
  58 #define R7      R7
  59   R8 = 8,
  60 #define R8      R8
  61   R9 = 9,
  62 #define R9      R9
  63   R10 = 10,
  64 #define R10     R10
  65   R11 = 11,
  66 #define R11     R11
  67   R12 = 12,
  68 #define R12     R12
  69   R13 = 13,
  70 #define R13     R13
  71   R14 = 14,
  72 #define R14     R14
  73   R15 = 15
  74 #define R15     R15
  75 };
  76
  77 /* Structure to describe FPU registers.  */
  78 typedef elf_fpregset_t  fpregset_t;
  79
  80 /* Context to describe whole processor state.  This only describes
  81    the core registers; coprocessor registers get saved elsewhere
  82    (e.g. in uc_regspace, or somewhere unspecified on the stack
  83    during non-RT signal handlers).  */
  84 typedef struct sigcontext mcontext_t;
  85
  86 /* Userlevel context.  */
  87 typedef struct ucontext
  88   {
  89     unsigned long uc_flags;
  90     struct ucontext *uc_link;
  91     stack_t uc_stack;
  92     mcontext_t uc_mcontext;
  93     __sigset_t uc_sigmask;
  94     unsigned long uc_regspace[128] __attribute__((__aligned__(8)));
  95   } ucontext_t;
  96
  97 #endif /* sys/ucontext.h */